ceiling-mounted indoor unit for an air conditioner

专利摘要:
INTERNAL UNIT MOUNTED ON THE CEILING FOR AIR CONDITIONING DEVICE. In order to increase the long reach of the blown air and to improve the agitation of the air in a refrigerated environment, a ceiling mounted indoor unit (4) is comprised of a box (51) with at least four horizontal propellers (71a to 71d) , and an internal control unit (67). An air outlet (56) is formed in the box (51) along a peripheral edge portion of a decorative panel (52). The at least four horizontal propellers (71a to 71d) are rotatably arranged at the air outlet (56), and their airflow direction angles in an upward and downward direction are capable of being changed independently. The internal control unit (67) controls the horizontal propellers in such a way that the first horizontal propellers, which are at least two of the horizontal propellers (71a to 71d) adjacent to each other among the at least four horizontal propellers (71a to 71d), oscillate synchronously while assuming the same posture and a combination of the first horizontal propellers moves in order along the peripheral edge portion of the decorative panel (52).
公开号:BR112012018541B1
申请号:R112012018541-1
申请日:2011-01-26
公开日:2020-12-08
发明作者:Yoshiaki Yumoto；Tsuyoshi Yokomizo；Yoshiharu Michtsuji；Yoshiteru Nouchi
申请人:Daikin Industries, Ltd.；
IPC主号:

专利说明:

TECHNICAL FIELD
[0001] The present invention relates to a ceiling mounted indoor unit for an air conditioning unit and particularly a ceiling mounted indoor unit for an air conditioning unit in which at least four horizontal propellers, whose angles of air flow direction in an up and down direction are able to be changed independently, are arranged in an air outlet. BACKGROUND OF THE INVENTION
[0002] Conventionally, an indoor unit for an air conditioning unit, which is a type of indoor unit, is mounted on a ceiling in a refrigerated environment. Examples of this type of indoor unit include the indoor unit shown in Patent Document 1 (Japanese Patent Publication unexamined N.2009-103417). In the indoor unit for an air conditioning unit belonging to Patent Document 1, an air inlet and four air outlets are positioned positioned to surround the air inlet, and rotating horizontal propellers are arranged in the air outlets. This indoor unit has a so-called dual mode, in which two horizontal propellers at the air vents opposite each other and two horizontal propellers at the other air vents opposite each other oscillate in opposite directions. SUMMARY OF THE INVENTION Technique Problem
[0003] However, in dual mode, the horizontal propellers adjacent to each other rotate in opposite directions. That is, arbitrary horizontal propellers rotate in an upward direction, but horizontal propellers positioned adjacent to horizontal propellers rotate in a downward direction. For this reason, in dual mode, it is difficult to direct the blown air out of the air vents to locations away from the indoor unit and, moreover, it is difficult to say whether this mode actually agitates the air in a refrigerated environment.
[0004] Thus, it is a problem of the present invention to increase the long range of the blown air and to improve the agitation of the air in a refrigerated environment. Solution of the problem
[0005] A ceiling mounted indoor unit for an air conditioner belonging to a first aspect of the present invention is a ceiling mounted indoor unit for an air conditioner arranged on a ceiling in a refrigerated environment and is comprised of a box , at least four horizontal propellers, and a control unit. An air outlet is formed on a bottom surface of the box along a peripheral edge portion of the bottom surface. Thus, at least four horizontal propellers are rotatably arranged at the air outlet, and their air flow direction angles in an up and down direction are able to be changed independently. The control unit controls the horizontal propellers in such a way that at least two of the horizontal propellers (hereinafter called "the first horizontal propellers") adjacent to each other among the horizontal propellers oscillate synchronously while assuming the same posture. In addition, the control unit controls the horizontal propellers in such a way that a combination of the first horizontal propellers moves in order along the peripheral edge portion of the bottom surface.
[0006] According to this indoor unit mounted on the ceiling, the at least two horizontal propellers adjacent to each other - that is, the first horizontal propellers - oscillate synchronously while assuming the same posture. For this reason, in this ceiling-mounted indoor unit, the air blown into the cooled environment from the air outlet of the indoor unit can be directed further and a greater agitation effect can be obtained compared to a case in which the propellers Adjacent horizontal strips perform different oscillations individually. In addition, the combination of the first horizontal propellers moves in order along the peripheral edge portion of the bottom surface. For this reason, a stronger stirring effect can be obtained compared to a case in which the combination of the first horizontal propellers that oscillate synchronously is fixed.
[0007] A ceiling mounted indoor unit for an air conditioner belonging to a second aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to the first aspect, whose control unit displaces the propeller combination horizontal sequentially, one propeller at a time.
[0008] According to this indoor unit mounted on the ceiling, the combination of the first horizontal propellers sequentially displaces one propeller at a time. For this reason, the air in the refrigerated environment becomes more agitated.
[0009] A ceiling mounted indoor unit for an air conditioner belonging to a third aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to the first or second aspect, whose control unit displaces the combination of the first horizontal propellers whenever the first horizontal propellers alternately rotate a predetermined number of times in the upward and downward direction with respect to the air outlet.
[00010] According to this indoor unit mounted on the ceiling, synchronization, when the combination of the first horizontal propellers moves, is combined with the action of the alternative rotation of the first horizontal propellers. For this reason, by adjusting the number of times that the first horizontal propellers rotate alternately, the long range of the blown air is given priority or the agitation of the air in the refrigerated environment can be given priority.
[00011] A ceiling-mounted indoor unit for an air conditioner belonging to a fourth aspect of the present invention is the ceiling-mounted indoor unit for an air conditioner belonging to the first or second aspect, whose control unit displaces the combination of the first horizontal propellers whenever the first horizontal propellers oscillate for a first predetermined period of time.
[00012] According to this indoor unit mounted on the ceiling, the combination of the first horizontal propellers moves after the first horizontal propellers oscillate for the first predetermined period of time. For this reason, when setting the first predetermined period of time, the long range of the blown air can be given priority or the agitation of air in the refrigerated environment can be given priority.
[00013] A ceiling mounted indoor unit for an air conditioner belonging to a fifth aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to any one of the first aspect to the fourth aspect, whose unit of control places the second horizontal propellers in a state in which the second horizontal propellers are fixed at a predetermined angle while the first horizontal propellers oscillate synchronously while assuming the same posture. The second horizontal propellers are the remaining propellers among the at least four horizontal propellers, with the exception of the first horizontal propellers.
[00014] According to this indoor unit mounted on the ceiling, the remaining propellers in addition to the first horizontal propellers - that is, the second horizontal propellers - are fixed at the predetermined angle, while the first horizontal propellers oscillate. For this reason, the air in the refrigerated environment is agitated by the first horizontal propellers that oscillate, and the air in the refrigerated environment now has a longer range, for example, depending on the second horizontal propellers.
[00015] A ceiling mounted indoor unit for an air conditioner belonging to a sixth aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to any one of the first aspect to the fifth aspect, in which the first horizontal propellers rotate alternately up and down with respect to the air outlet. In addition, the control unit temporarily interrupts the actions of the first horizontal propellers when the rotational directions of the first horizontal propellers are changed.
[00016] In this ceiling-mounted indoor unit, so-called rest periods are arranged in which the actions of the first horizontal propellers are temporarily interrupted when the rotational directions of the first horizontal propellers change. As a result, when the air in the refrigerated environment is being agitated, the air blown from the air outlet is reliably blown in a horizontal direction or in a vertical direction, for example.
[00017] A ceiling mounted indoor unit for an air conditioner belonging to a seventh aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to any one of the first aspect to the sixth aspect, in which during a second predetermined period of time after the start of operation, the control unit controls the horizontal propellers in such a way that the first horizontal propellers oscillate synchronously while assuming the same posture, and the combination of the first horizontal propellers moves in order along of the peripheral edge portion of the lower surface. In addition, after the end of the second predetermined period of time after the start of operation, the control unit tilts the first horizontal propellers at a predetermined angle.
[00018] In this indoor unit mounted on the ceiling, when the second predetermined period of time runs out after the start of operation, the action of the first horizontal propellers oscillate synchronously and the action of the combination of the first horizontal propellers that move sequentially ends. In addition, the first horizontal propellers tilt at the predetermined angle. As a result, the air with the desired temperature can be supplied to the refrigerated environment whose air has been sufficiently agitated, and, therefore, the discomfort that a user may feel due to a draft can be suppressed and the refrigerated environment can be removed. make comfortable.
[00019] A ceiling mounted indoor unit for an air conditioner belonging to an eighth aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to any one of the first aspect to the seventh aspect, in which the bottom surface of the box is substantially quadrilateral in plan view. Four of the horizontal propellers are arranged in correspondence on each side of the bottom surface. In addition, the air outlet has air vents at the edges that are divided by the horizontal propellers and correspond to each edge portion of the bottom surface.
[00020] In this indoor unit mounted on the ceiling, the first horizontal propellers adjacent to each other through an air outlet of arbitrary edge portion oscillate synchronously while assuming the same posture. In addition, the combination of the first horizontal propellers moves sequentially. For this reason, the air blown from the edge portion air outlet is, together with the blown air from the air outlet sections opened and closed by the first horizontal propellers adjacent to each other, through this edge portion, reliably directed by the first horizontal propellers while incorporating some of the air from the refrigerated environment. Consequently, the air in the refrigerated environment can be further agitated by the air that is blown, and the air conditioning can even be directed further away, compared to the case of making the individual horizontal propellers oscillate separately without synchronizing them.
[00021] A ceiling mounted indoor unit for an air conditioner belonging to a ninth aspect of the present invention is the ceiling mounted indoor unit for an air conditioner belonging to the eighth aspect, in which the first horizontal propellers are configured by two of the horizontal propellers adjacent to each other.
[00022] As a result, the air in the refrigerated environment can be effectively agitated and the air conditioning can be directed further away.
[00023] An indoor unit mounted on the ceiling for an air conditioner belonging to a tenth aspect of the present invention is the indoor unit mounted on the ceiling for an air conditioner belonging to the eighth aspect, in which the first horizontal propellers are configured by three of the horizontal propellers adjacent to each other.
[00024] As a result, the air in the refrigerated environment can be effectively agitated and the air conditioning can be directed further away. Advantageous Effects of the Invention
[00025] As described above, according to the present invention, the following effects are obtained.
[00026] According to the ceiling mounted indoor unit for the air conditioning unit belonging to the first aspect of the present invention, the air blown into the refrigerated environment from the air outlet of the indoor unit can be directed further away and a greater stirring effect can be obtained.
[00027] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the second aspect of the present invention, the air in the refrigerated environment becomes more easily agitated.
[00028] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the third aspect of the present invention, by defining the number of times that the first horizontal propellers rotate in an alternative way, the long range of the blown air may priority or agitation of the air in the refrigerated environment may have priority.
[00029] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the fourth aspect of the present invention, when defining the first predetermined period of time, the long range of the blown air may receive priority or the agitation of the air in the refrigerated environment it may have priority.
[00030] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the fifth aspect of the present invention, the air in the refrigerated environment is stirred by the first horizontal propellers that are oscillating, and the air in the refrigerated environment is directed away, for example, by the second horizontal propellers.
[00031] According to the ceiling mounted indoor unit for the air conditioner belonging to the sixth aspect of the present invention, when the air in the refrigerated environment is being agitated, the air blown from the air outlet is reliably blown in one horizontal or in a vertical direction, for example.
[00032] According to the indoor unit mounted on the ceiling for the air conditioner belonging to the seventh aspect of the present invention, the discomfort that a user experiences due to a draft can be suppressed and the refrigerated environment can become comfortable .
[00033] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the eighth aspect of the present invention, the air in the refrigerated environment may be further agitated by the air that is blown, and more air conditioning may be directed to far.
[00034] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the ninth aspect of the present invention, the air in the refrigerated environment can be effectively agitated and a larger amount of air conditioning can be directed away.
[00035] According to the indoor unit mounted on the ceiling for the air conditioning unit belonging to the tenth aspect of the present invention, the air in the refrigerated environment can be effectively agitated and a larger amount of air conditioning can be directed away. BRIEF DESCRIPTION OF THE DRAWINGS
[00036] Figure 1 is a schematic diagram of an air conditioning unit in which a ceiling mounted indoor unit belonging to a modality of the present invention is employed.
[00037] Figure 2 is an external perspective view of the indoor unit mounted on the ceiling belonging to the modality of the present invention.
[00038] Figure 3 is a schematic side section view of the indoor unit mounted on the ceiling belonging to the modality of the present invention and is a sectional view taken along the line I-O-I of Figure 4.
[00039] Figure 4 is a schematic plan view showing a state in which an upper plate of the indoor unit mounted on the ceiling belonging to the modality of the present invention is removed.
[00040] Figure 5 is a bottom view of a decorative panel of the indoor unit mounted on the ceiling belonging to the modality of the present invention, that is, a plan view in which the decorative panel is seen from inside a refrigerated environment. .
[00041] Figure 6 is a schematic diagram showing flows of the blown air conditioning from an air outlet of the indoor unit mounted on the ceiling belonging to the modality of the present invention and a detection range of a presence sensor.
[00042] Figure 7 is a schematic diagram showing the configuration of the presence sensor arranged in the indoor unit mounted on the ceiling belonging to the modality of the present invention.
[00043] Figure 8 is a schematic diagram showing the detection range of the presence sensor, as noted in a side view of the indoor unit mounted on the ceiling belonging to the modality of the present invention.
[00044] Figure 9 is a block diagram showing schematically an internal control unit belonging to the modality of the present invention and several devices of the indoor unit mounted on the ceiling that are connected to the control unit.
[00045] Figure 10 is a view showing a range of changing airflow directions of the horizontal propellers of the indoor unit mounted on the ceiling belonging to the modality of the present invention.
[00046] Figure 11 is a synchronization graph to describe the actions of the horizontal propellers of the indoor unit mounted on the ceiling belonging to the modality of the present invention.
[00047] Figure 12 is a diagram showing a combination of first horizontal propellers that move in order.
[00048] Figure 13 shows examples of screens displayed on a video from a remote controller when defining various modes.
[00049] Figure 14 is a flow chart showing a general flow of actions of the air conditioning unit in which the indoor unit mounted on the ceiling belonging to the modality of the present invention is used.
[00050] Figure 15 is a flow chart showing a general flow of actions of the air conditioning unit in which the indoor unit mounted on the ceiling belonging to the modality of the present invention is used.
[00051] Figure 16 is a diagram showing the combination of the first horizontal propellers belonging to another modality (A) that move in order.
[00052] Figure 17 is a synchronization graph for describing the actions of horizontal propellers belonging to another modality (D).
[00053] Figure 18 is a diagram showing the combination of the first horizontal propellers belonging to another modality (D) that move in order. MODALITY DESCRIPTION
[00054] A modality of a ceiling mounted indoor unit belonging to the present invention will be described based on the drawings. settings Overview
[00055] Figure 1 is a schematic diagram configuration of an air conditioning unit 1 in which an indoor unit mounted on the ceiling 4 belonging to the modality of the present invention is employed. The air conditioner 1 is a split type air conditioner, mainly having an outdoor unit 2, the ceiling mounted indoor unit 4, and a liquid refrigerant connection tube 5 and a gas refrigerant connection tube 6 that it interconnects the external unit 2 and the indoor unit mounted on the ceiling 4, and configures a vapor compression refrigerant circuit 10. The air conditioner 1 is capable of performing a cooling operation and a heating operation. External Drive
[00056] The external unit 2 is installed outdoors or the like and mainly has a compressor 21, a four-way switching valve 22, an external heat exchanger 23, an expansion valve 24, a shut-off valve liquid 25, and a gas shut-off valve 26.
[00057] Compressor 21 is a mechanism for aspirating a low pressure gas refrigerant, which compresses the low pressure gas refrigerant into a high pressure gas refrigerant, and then discharges the high pressure gas refrigerant. In this case, a closed compressor, in which a positive displacement rotary or rotary compression element (not shown) housed inside a box (not shown) is driven by a compressor motor 21a also housed inside the box, is used as the compressor 21. The rotational speed (ie the operating frequency) of the compressor motor 21a can be varied by an inverter device (not shown), by means of which it is possible to control the capacity of the compressor 21.
[00058] The four-way switching valve 22 is a valve for changing the direction of the refrigerant flow when switching between the cooling operation and the heating operation. During the cooling operation, the four-way switching valve 22 is able to interconnect the discharge side of the compressor 21 and the gaseous side of the external heat exchanger 23 and also interconnect the gas shut-off valve 26 and the suction side of compressor 21 (see solid lines on the four-way switching valve 22 in Figure 1). In addition, during the heating operation, the four-way switching valve 22 is able to interconnect the discharge side of the compressor 21 and the gas shut-off valve 26 and also interconnect the gaseous side of the external heat exchanger 23 and the suction side of compressor 21 (see the dotted lines of the four-way switching valve 22 in Figure 1).
[00059] The external heat exchanger 23 is a heat exchanger that works as a radiator for the refrigerant during the refrigeration operation and works as an evaporator for the refrigerant during the heating operation. The liquid side of the external heat exchanger 23 is connected to the expansion valve 24, and the gaseous side of the external heat exchanger 23 is connected to the four-way switching valve 22.
[00060] Expansion valve 24 is a motor-driven expansion valve that, during the refrigeration operation, is able to reduce the pressure of the high-pressure liquid refrigerant that dissipates heat in the external heat exchanger 23 before sending the refrigerant to an internal heat exchanger 42 (described later) and which, during the heating operation, is able to reduce the pressure of the high pressure liquid refrigerant that dissipates the heat in the internal heat exchanger 42 before sending the refrigerant to the external heat exchanger 23.
[00061] The liquid shut-off valve 25 and the gas shut-off valve 26 are valves arranged in the openings that connect to external devices and tubes (specifically, the liquid refrigerant connection tube 5 and the refrigerant connection tube gaseous 6). The liquid shut-off valve 25 is connected to the expansion valve 24. The gas shut-off valve 26 is connected to the four-way switching valve 22.
[00062] Also arranged in the external unit 2 is an external fan 27 that sucks the ambient air into the unit 2, supplies the ambient air to the external heat exchanger 23, and then discharges the air outside the unit 2. That is, the external heat exchanger 23 is a heat exchanger that uses ambient air as a cooling source or as a heating source to cause the refrigerant to dissipate heat or evaporate. In this case, a propeller fan driven by an external fan motor 27a is used as the external fan 27. The rotational speed (ie operating frequency) of the external fan motor 27a can be varied by an inverter device (not shown) ), by means of which it is possible to control the air volume of the external fan 27.
[00063] Although not shown, 2 sensors that detect the suction pressure and the discharge pressure are also arranged in the external unit, a sensor that detects the temperature of the refrigerant on the liquid side of the external heat exchanger 23, and a sensor that detects the temperature of the outside air.
[00064] In addition, the external unit 2 has an external control unit 39 that controls the actions of the devices that configure the external unit 2. The external control unit 39 is configured by a microcomputer comprising a CPU and a memory and can exchange control signals or the like with an internal control unit 67 (described later) of the indoor unit mounted on the ceiling 4. Liquid Coolant Connection Tube
[00065] The liquid refrigerant connection tube 5 is a refrigerant tube connected to the liquid shut-off valve 25. The liquid refrigerant connection tube 5 is a refrigerant tube that, during the refrigeration operation, is capable of charging the refrigerant out of the outlet of the external heat exchanger 23 acting as a radiator for the refrigerant out of the external unit 2. In addition, the liquid refrigerant connection tube 5 is also a refrigerant tube which, during the heating operation , is able to charge the refrigerant in from outside the external unit 2 to the entrance of the external heat exchanger 23 functioning as an evaporator for the refrigerant. Gas Refrigerant Connection Tube
[00066] The gas refrigerant connection tube 6 is a refrigerant pipe connected to the gas shut-off valve 26. The gas refrigerant connection tube 6 is a refrigerant pipe which, during the refrigeration operation, is capable of charging the refrigerant in from outside the external unit 2 to the suction side of the compressor 21. In addition, the gas refrigerant connection pipe 6 is also a refrigerant pipe which, during the heating operation, is able to charge the refrigerant out of the discharge side of the compressor 21 to the outside of the external unit 2. Ceiling Mounted Indoor Unit
[00067] For the indoor unit mounted on the ceiling 4, in this case, a form of air conditioning unit mounted on the ceiling called a recessed type is used. As shown in Figure 2 to Figure 5 and Figure 9, the ceiling mounted indoor unit 4 has a box 51 that stores several configuring devices inside, four horizontal propellers 71a, 71b, 71c, and 71d, several sensors 61, 62, and 63, the internal control unit 67 (corresponding to a control unit), and the remote control use receiving unit 69. Cashier
[00068] Box 51 is configured from a box body 51a and a decorative panel 52 which is placed on the lower surface of the box body 51a and corresponds to a lower surface of the box 51. As shown in Figure 3, the housing body 51a is inserted and placed in an opening formed in a U-roof of a refrigerated environment. In addition, the decorative panel 52 is placed in such a way that it fits into the opening of the ceiling U. In this case, Figure 2 is an external perspective view of the indoor unit mounted on the ceiling 4. Figure 3 is a side section view. schematic of the ceiling mounted indoor unit 4 and is a sectional view taken along line I-OI in Figure 4. Figure 4 is a schematic plan view showing a state in which a top plate 53 of the ceiling mounted indoor unit 4 is removed. Figure 5 is a plan view showing the decorative panel 52 of the indoor unit mounted on the ceiling 4, as seen inside a refrigerated environment. Figure 9 is a block diagram showing schematically the indoor unit control unit 67 and various devices of the ceiling mounted indoor unit 4 that are connected to the control unit 67.
[00069] The box body 51a is a box type body provided with a substantially octagonal shape, in which the long sides and the short sides are alternately formed, in a plan view, and the bottom surface of the box body 51a is opened. The housing body 51a has the upper plate 53, of a substantially octagonal shape in which the long sides and the short sides are formed in an alternating and consecutive manner, and a side plate 54, which extends downwards from the portion of peripheral edge of upper plate 53. Side plate 54 is configured from side plates 54a, 54b, 54c, and 54d, which correspond to the long sides of upper plate 53, and side plates 54e, 54f, 54g, and 54h , which correspond to the short sides of the upper plate 53. The side plate 54h configures a section penetrated by the internal refrigerant tubes 43 and 44 for the interconnection of the internal heat exchanger 42 and the refrigerant connection tubes 5 and 6 (see Figure 4).
[00070] Furthermore, as shown in Figure 3, an internal fan 41 and the internal heat exchanger 42 are basically placed inside the housing body 51a.
[00071] The internal fan 41 is a centrifugal blower that draws air from the refrigerated environment through an air inlet 55 into the housing 51a and, after the air exchanges heat in the internal heat exchanger 42, blows the air out through an air outlet 56 of the housing 51a. The internal fan 41 has an internal fan motor 41a, which is arranged in the center of the upper plate 53 of the housing body 51a, and a thruster 41b, which is coupled to and driven so as to rotate by the internal fan motor 41a. Propeller 41b is a propeller with turbo propellers and can draw air into impeller 41b from below and blow air out towards the outer peripheral side of impeller 41b in a plan view. The rotational speed (i.e., the operating frequency) of the internal fan motor 41a can be varied by an inverter device (not shown), by means of which it is possible to control the volume of air of the internal fan 41.
[00072] The internal heat exchanger 42 is a heat exchanger that functions as an evaporator for the refrigerant during the refrigeration operation and functions as a radiator for the refrigerant during the heating operation. The internal heat exchanger 42 is connected to the refrigerant connection tubes 5 and 6 (see Figure 1) through the internal refrigerant tubes 43 and 44 and is configured by a tube and fin heat exchanger that is curved and placed in such a way in order to wrap the periphery of the internal fan 41, in a plan view. The internal heat exchanger 42 can perform the heat exchange between the refrigerant and the air in the refrigerated environment that is sucked into the housing 51a; during the cooling operation, the internal heat exchanger 42 can cool the air in the refrigerated environment, and during the heating operation, the heat exchanger 42 can heat the air in the refrigerated environment.
[00073] A drain pan 45 is installed on the underside of the internal heat exchanger 42 and on the underside of the housing body 51a. The drain tray 45 is for receiving the drainage water produced as a result of moisture in the air that is condensed by the internal heat exchanger 42. In addition, an inlet mouth 41c to guide the air drawn in from the inlet. air 55 for the propeller 41b of the internal fan 41 is placed in a suction hole 45j in the drain tray 45.
[00074] The decorative panel 52 is a plate-like body that is substantially quadrilateral in plan view, and the decorative panel 52 is mainly configured from a panel body 52a which is fixed to the end portion bottom of the box body 51a. Air outlet 56 and air inlet 55 are formed in panel body 52a. Air outlet 56 is an opening for blowing air into the refrigerated environment and is positioned along the peripheral edge portion of panel body 52a, in a plan view. Air inlet 55 is an opening for drawing air into the refrigerated environment and is positioned substantially in the center of panel body 52a, in a plan view - that is, in such a way as to be surrounded by the air outlet 56. In more specific terms, the air inlet 55 is an opening that is substantially quad-shaped, and a suction grille 57 and an intake filter 58 that is for removing dirt and dust from the air aspirated from the air inlet. air 55 are arranged in air inlet 55. In addition, air outlet 56 is an opening substantially in the form of a four-sided ring. As a result, the air conditioner is blown out not only in the directions corresponding to each side of the panel body 52a quadrilateral (see the directions of arrows X1, X2, X3, and X4 in Figure 5), but also in the directions corresponding to each edge portion of panel body 52a on four sides (see the directions of arrows Y1, Y2, Y3, and Y4 in Figure 5). Horizontal Shovels
[00075] The four horizontal propellers 71a to 71d are positioned in correspondence on each side of the four-sided panel body 52a and are rotatably arranged in the air outlet 56. The horizontal propellers 71a to 71d are capable of changing the angles of direction of air flow, up and down, from the blown air conditioner to the refrigerated environment. In more specific terms, the horizontal propellers 71a to 71d are plate-like elements that extend long and narrow along each side of the four-sided air outlet 56; both end portions in the lengthwise direction of each of the horizontal propellers 71a to 71d are supported on the decorative panel 52, such that the horizontal propellers 71a to 71d are rotatable on axes in the longitudinal directions on the axes in their longitudinal directions , by means of the pairs of the propeller support portions 72 and 73 which are placed in such a way as to block parts of the air outlet 56. In addition, the horizontal propellers 71a to 71d are driven by the propeller drive motors 74a, 74b, 74c, and 74d. As a result, the air flow direction angles, in the up and down direction, of the horizontal propellers 71a to 71d are able to be changed independently, and the horizontal propellers 71a to 71d can rotate alternately in the up and down in relation to the air outlet 56. The propeller drive motors 74a to 74d, in this case, are arranged in the propeller support portions 72 and 73.
[00076] The air outlet 56 is divided by the propeller support portions 72 and 73 at the side air outlets 56a, 56b, 56c, and 56d, which correspond to each side of the four-sided panel body 52a, and at the outlets of air from edges 56e, 56f, 56g, and 56h, which correspond to each edge portion of the four-sided panel body 52a. In this case, the area in which the air conditioning is carried out mainly by the air conditioning blown basically from the side air outlet 56a (see arrows X1, Y1, and Y2 in Figure 5) is a "target air conditioning area A "(see Figure 6). In addition, the area in which the air conditioning is carried out primarily by the air conditioning blown from the side portion air outlet 56b (see arrows X2, Y2, and Y3 in Figure 5) is a "target air conditioning area B. " In addition, the area in which the air conditioning is carried out primarily by the air conditioning blown from the side portion air outlet 56c (see arrows X3, Y3, and Y4 in Figure 5) is a "target air conditioning area C. " In addition, the area in which the air conditioning is carried out basically by the air conditioning blown from the side portion air outlet 56d (see arrows X4, Y4, and Y1 in Figure 5) is a "target air conditioning area D. " Various Sensors
[00077] Examples of the sensors disposed of the indoor unit mounted on the ceiling 4 belonging to the present modality include an inlet air temperature sensor 61, a presence sensor 62, and a floor temperature sensor 63.
[00078] The inlet air temperature sensor 61 is a temperature sensor that detects an inlet air temperature Tr which is the temperature of the air from the refrigerated environment sucked into the housing 51a through the air inlet 55. In this In this case, as shown in Figure 3, the inlet air temperature sensor 61 is arranged in the air inlet 55.
[00079] The presence sensor 62 is an infrared sensor that detects the distribution of people in the refrigerated environment (in this case, whether people are present or not in the target areas of air conditioning A to D belonging to Figure 6). A presence sensor 62 is placed in a position in which it can be placed on the lower portion of the decorative panel 52; in this case, it is on an edge portion of the decorative panel 52 (see Figures 2 and 5). In more specific terms, the presence sensor 62 is arranged in such a way that it projects downwards from the surface of the decorative panel 52 in a position on the outer peripheral side of the edge portion air outlet 56f, and the sensor presence 62 is substantially circular in plan view of decorative panel 52. presence sensor 62 is a type of sensor that detects whether or not people are present in the refrigerated environment by means of fluctuations in the radiated infrared radiant energy from objects; as shown in Figure 7, an open portion 62a for receiving infrared light is formed in an infrared light receiving element (not shown). In this case, the open portion 62a can be covered by a transparent element capable of allowing infrared light to be received by the infrared light receiving element. In addition, the open portion 62a is able to rotate 360 °, in a plan view of the decorative panel 52, so that whether people are present or not in each of the air conditioning target areas A to D, this can be detected . In addition, as shown in Figure 6, the detection range of presence sensor 62, in a plan view, is a range in which the detection angles α, β, Y, and δ are about 90 ° at any one of the detection cases if people are present in the target areas of air conditioning A to D. In addition, as shown in Figure 8, the detection range of presence sensor 62, as seen in a side view, is a range in which the detection angles ε are about 135 ° in any of the detection cases whether people are present or not in the target areas of air conditioning A to D.
[00080] The presence sensor 62 is not limited to the structure described above and can also, for example, be a sensor in which the infrared light receiving element rotates in place of the open portion 62a that rotates or a sensor that has four elements receiving infrared light that face the directions of each of the air conditioning target areas A to D.
[00081] The floor temperature sensor 63 is an infrared sensor that detects a floor temperature Tf in the refrigerated environment. The floor temperature sensor 63 is placed in a position in which it can be placed on the lower portion of the decorative panel 52; in this case, it is located on an edge portion of the decorative panel 52. In more specific terms, the floor temperature sensor 63 is arranged in such a way as to face the downward direction from the surface of the decorative panel 52 in a position on the outer peripheral side of the edge portion air outlet 56f. The floor temperature sensor 63 detects the floor temperature Tf in the refrigerated environment by means of the infrared radiant energy radiated from the objects. Internal Control Unit
[00082] The internal control unit 67 is a microcomputer comprising a CPU and memory and controls the actions of the devices that configure the indoor unit mounted on the ceiling 4. In specific terms, as shown in Figure 9, the internal control unit 67 is electrically connected to the various sensors 61 to 63 in the internal unit 4, the internal fan motor 41a, the propeller drive motors 74a to 74d, an external unit use communication unit 68, and the use receiving unit remote control unit 69. The external unit use communication unit 68 is for exchanging control signals or the like with the external control unit 39 of the external unit 2 and is electrically connected via wire 9 to the control unit. external control 39 (see Figure 1).
[00083] The internal control unit 67 performs the drive control of the internal motor 41a and performs the drive control of the propeller drive motors 74a to 74d based on the detection results of the various sensors 61 to 63, in the various instructions that were received via a remote controller 99 (see Figure 1) by a user in the refrigerated environment, and on the control signals that were sent by the external control unit 39. For example, in a case where an instruction to start the operation of heating or cooling operation was received via remote controller 99 by a user, the internal control unit 67 starts motors 41a and 74a to 74d. In this case, the external unit use communication unit 68 sends an external control signal 39 to the external control unit 39, indicating whether the external control unit 39 should start the drive of the external unit 2 and which indicates the operation for which the start instruction was received. In addition, in a case in which an instruction to interrupt the operation was received via remote controller 99, the internal control unit 67 interrupts the activation of motors 41a and 74a to 74d. In this case, the external unit use communication unit 68 sends an external control signal 39 to the external control unit 39 indicating whether the external control unit 39 should interrupt the activation of the external unit 2. Control of Airflow Direction Angles of Horizontal Propellers
[00084] In this case, the control of the air flow direction angles of the horizontal propellers 71a to 71d by the internal control unit 67 will be described. While the air conditioner 1 performs the heating operation or the cooling operation, the internal control unit 67 can adjust the horizontal propellers 71a to 71d in a fixed state or in a state of oscillation, based on a request from the controller remote 99 and the detection values of the various sensors 61 to 63. The fixed state is a state in which the air flow direction angles of the horizontal propellers 71a to 71d are fixed at a desired air flow direction angle by means of the drive of the horizontal propeller motors 74a to 74d. As shown in Figure 10, the air flow direction angles of horizontal propellers 71a to 71d can be changed in several stages between an air flow direction P0 (a horizontal air flow direction), which is an angle of direction of desired airflow in which the air conditioner is blown in an approximately horizontal direction, and a direction of airflow P4, which is an angle of the desired airflow direction in which the air conditioner is blown in a more downward. In this case, the air flow direction angles of the horizontal propellers 71a to 71d can be changed in five stages: the air flow direction P0, an air flow direction P1 that faces in a more downward direction than the direction of airflow P0, an airflow direction P2 that faces in a more downward direction than the airflow direction P1, an airflow direction P3 that faces in a more downward direction than the airflow direction P2 , and the air flow direction P4 that faces in a more downward direction. The oscillation state is a state in which the horizontal propellers 71a to 71d rotate alternately by driving the propeller drive motors 74a to 74d and repeatedly changing the airflow direction angles of the propellers horizontal 71a to 71d in a range of changing airflow directions (in this case, between airflow direction P0 and airflow direction P4). The internal control unit 67 is capable of controlling the airflow direction angles described above with respect to the individual horizontal propellers 71a to 71d.
[00085] In a state in which the ceiling mounted indoor unit 4 is not operated, the horizontal propellers 71a to 71d assume a state in which they close the air outlet 56 (specifically, the side air outlets 56a to 56d) . Then, for the purpose of forwarding the description, the air flow direction angle in a case in which the horizontal propellers 71a to 71b are in a closed state will be expressed as an "air flow direction P0c" (see Figure 11). In addition, in a state in which the ceiling mounted indoor unit 4 operates, the horizontal propellers 71a to 71d are capable of assuming any of the air flow directions P0c to P4 in the fixed or oscillating state. Control for Synchronously Oscillating Adjacent Horizontal Propellers
[00086] However, when the indoor unit mounted on the ceiling 4 starts an operation, an imbalance occurs in the temperature distribution in the refrigerated environment. For this reason, when the indoor unit mounted on the ceiling 4 starts operation, it is good to effectively stir the air in the refrigerated environment, before carrying out the heating operation or the cooling operation, sending the air conditioning at the air flow direction angles. in question.
[00087] Therefore, as shown in Figure 11, the internal control unit 67 belonging to the present modality performs a rotation control of the horizontal propellers 71a to 71d when doing the control of the propeller drive motors 74a to 74d of such that two of the horizontal propellers adjacent to each other (hereinafter referred to as "the first horizontal propellers") among the four horizontal propellers 71a to 71d oscillate synchronously while assuming the same posture for a predetermined period of time (corresponding to a second predetermined period of time) ) after an instruction for the ceiling mounted indoor unit 4 to start operation is given. In addition, in rotation control, the internal control unit 67 places the other horizontal propellers (for example, the horizontal propellers 71c and 71d; hereinafter referred to as "the second horizontal propellers") among the four horizontal propellers 71a to 71d with the exception of the first horizontal propellers (for example, horizontal propellers 71a and 71b) in a state in which the second horizontal propellers are fixed at a predetermined angle (for example, the air flow direction P0).
[00088] In addition, the internal control unit 67 also performs a drift control combination of the first horizontal propellers such that a combination of the first horizontal propellers moves in order along the peripheral edge portion of the decorative panel 52 during a predetermined period of time after an instruction for the ceiling mounted indoor unit 4 to start operation is given. In particular, the internal control unit 67 belonging to the present modality shifts the combination of the first horizontal propellers whenever the first horizontal propellers alternately rotate a predetermined number of times upwards and downwards in relation to the air outlet 56 .
[00089] The actions that horizontal propellers 71a to 71d take under the control of rotation and under the control of combination deviation will be specifically described below using Figure 11 and Figure 12. Figure 11 and Figure 12 show , as an example, a case in which the combination of the first horizontal propellers moves whenever the first horizontal propellers rotate alternately once - that is, they oscillate once - in the up and down direction. In Figure 12, the horizontal propellers that are hidden represent the first horizontal propellers, and the horizontal propellers that are not covered represent the second horizontal propellers. Before starting operation, the horizontal propellers 71a to 71d are in a posture (the air flow direction P0c) in which they close the air outlet 56.
[00090] When the operation first begins, the horizontal propeller 71a and the horizontal propeller 71b adjacent to each other through the air outlet of edge portion 56f in the decorative panel 52 correspond to the first horizontal propellers, and the propellers 71a and 71b begin to oscillate in the same synchrony and at the same time that they assume the same posture. In specific terms, the horizontal propellers 71a and 71b both rotate at the same rotational speed in a direction in which they rotate from the airflow direction P0c to the airflow direction P4 - that is, in the downward direction . Consequently, the airflow direction angles of the horizontal propellers 71a and 71b range from the airflow direction P0 to the airflow direction P1, to the airflow direction P2, and to the airflow direction P3 in the same synchronization and before a long reach of the airflow direction P4 at substantially the same time. After the horizontal propellers 71a and 71b reach the airflow direction P4, the rotational direction of the horizontal propellers 71a and 71b changes from the downward direction to the upward direction, and the air flow direction angles of the horizontal propellers 71a and 71b before a long reach in the direction of air flow P0 at substantially the same time. During this time, the horizontal propellers 71c and 71d adjacent to each other through the air outlet of edge portion 56h are fixed in the posture (the air flow direction P0c) in which they close the air outlet 56. That is, while the horizontal propellers 71a and 71b are the first horizontal propellers, the horizontal propellers 71c and 71d correspond to the second horizontal propellers.
[00091] When the horizontal propellers 71a and 71b rotate alternately once in the upward and downward direction, the combination of the first horizontal propellers changes from the combination of horizontal propellers 71a and 71b to the combination of horizontal propellers 71b and 71c. Meanwhile, the combination of the second horizontal propellers changes from the combination of the horizontal propellers 71c and 71d to the combination of the horizontal propellers 71a and 71d. The horizontal propellers 71b and 71c that became the new first horizontal propellers oscillate only once in the up and down direction in the same synchrony and at the same time that they assume the same posture as the horizontal propellers 71a and 71b that were the first propellers horizontal just before. During this time, the horizontal propellers 71a and 71d which are the second horizontal propellers are fixed in the states of the air flow direction angles corresponding to the air flow directions P0 and P0c, respectively.
[00092] After the horizontal propellers 71b and 71c alternately rotate up and down once, the combination of the first horizontal propellers changes from the combination of horizontal propellers 71b and 71c to the combination of horizontal propellers 71c and 71d. Meanwhile, the combination of the second horizontal propellers changes from the combination of the horizontal propellers 71a and 71d to the combination of the horizontal propellers 71a and 71b. The horizontal propellers 71c and 71d that became the new first horizontal propellers oscillate only once in an up and down direction in the same synchrony and at the same time that they assume the same posture, and the horizontal propellers 71a and 71b that became the second horizontal propellers are fixed in the states of the air flow direction angles corresponding to the air flow direction P0.
[00093] These actions are repeated, depending on which two of the horizontal propellers adjacent to each other through the air vents at the edges 56 and 56h between the four horizontal propellers 71a to 71d become the first horizontal propellers, and whenever the first propellers are horizontal horizontal oscillates once the combination of the first horizontal propellers changes one after another from horizontal propellers 71a and 71b to horizontal propellers 71b and 71c, then from horizontal propellers 71b and 71c to horizontal propellers 71c and 71d, and then from propellers horizontal props 71c and 71d for horizontal propellers 71d and 71a. That is, in this modality, the combination of the first horizontal propellers moves sequentially, one propeller each time in a clockwise direction as seen in a bottom view of decorative panel 52 (see Figures 5 and 12). Consequently, the combination of the first horizontal propellers moves sequentially in such a way as to become a combination of the horizontal propeller positioned on the left side of the two horizontal propellers that were the first horizontal propellers so far and the horizontal propeller positioned further to the left of the or adjacent to that horizontal helix and that was a second horizontal helix until then. In addition, the other two horizontal propellers 71a to 71d at those times (the two horizontal propellers adjacent to each other through the other air vents at the edges 56 and 56h) become the second horizontal propellers, and the combination of the second horizontal propellers also changes sequentially monitoring the deviation in the combination of the first horizontal propellers. That is, the focus on the individual horizontal propellers 71a to 71d, after each of the horizontal propellers 71a to 71d has consecutively oscillated twice, their postures are fixed for two oscillations of the other propellers. The synchronizations when the horizontal propellers 71a to 71d start to oscillate again from their fixed postures do not coincide between the horizontal propellers 71a to 71d, but differ from each of the horizontal propellers 71a to 71d. As a result, compared to making the individual horizontal propellers 71a to 71d oscillate separately without synchronizing them, the air blown from the air outlet 56 is reliably directed away by the first horizontal propellers when mixing with some air in the refrigerated environment. Furthermore, since the combination of the first horizontal propellers moves in order, the air is not directed in only one direction, but the air is directed in several directions. For this reason, compared to a case in which only one horizontal propeller oscillates and that propeller moves in order, for example, the air is strongly oriented in several directions and the agitation of the air in the refrigerated environment is also intensified.
[00094] In addition, as shown in Figure 11, the internal control unit 67 performs a control that temporarily interrupts the actions of the first horizontal propellers when the rotational directions (upwards and downwards) of the first horizontal propellers (for example, example, horizontal propellers 71a and 71b) are changed. For example, in Figure 11, in a case in which the rotational directions of the horizontal propellers 71a and 71b which oscillate when the first horizontal propellers meet in the downward direction and the air flow direction angles of the same reached each of the same , the air flow direction P4, the horizontal propellers 71a and 71b are both fixed during a resting period TA in the state of the air flow direction P4. In this case, the air blown from the side air outlets 56a and 56b and the edge portion air outlet 56f is blown out in a substantially vertical direction by the horizontal propellers 71a and 71b during the TA rest period. In addition, for example, in a case in which the rotational directions of the horizontal propellers 71c and 71d which oscillate when the first horizontal propellers meet in the upward direction and the airflow direction angles of the same both reach the direction of air flow P0, the horizontal propellers 71a and 71b are fixed during the resting period TA in the state of the air flow direction P0. In this case, the air blown from the side air vents 56c and 56d and the edge portion air outlet 56h is blown in a substantially horizontal direction by the horizontal propellers 71c and 71d during the TA rest period. In this way, the actions of the first horizontal propellers are temporarily interrupted when the rotational directions of the first horizontal propellers change, so the air blown from the air outlet 56 can be reliably directed in the vertical or in the horizontal direction.
[00095] The TA rest period must be a predetermined value in advance by working on it in a document, simulation, or experiment based on the volume of air blown from the air outlet 56 to the refrigerated environment and the set temperature in the refrigerated environment. In this case, the duration of the TA rest period is a maximum of 5 seconds and should be 3 seconds, for example.
[00096] In addition, after the predetermined period of time has elapsed after the start of operation, the internal control unit 67 ends the rotation control and the combination deviation control and tilts the horizontal propellers 71a to 71d at a predetermined angle . As a result, the first horizontal propellers that should oscillate synchronously during the predetermined period of time after the start of operation stop their oscillating actions, the second horizontal propellers that were fixed at the predetermined angle are released, and the flow direction angles air from the horizontal propellers 71a to 71d become either of the air flow directions P0 to P4. For example, after the predetermined period of time has elapsed after the start of operation, the air flow direction angles of the horizontal propellers 71a to 71d can assume any of the air flow directions P0 to P4 depending on the type of operation, the set temperature, and the volume of air that was set through remote controller 99. In addition, in a case in which the swing actions are defined through remote controller 99, horizontal propellers 71a through 71d can take either direction of air flow P0 to P4 when performing the oscillation actions in which they rotate individually and independently in the up and down direction.
[00097] In this case, the predetermined period of time in which the rotation control and the combination deviation control are done can be 5 minutes, for example, and can also be decided in advance when working the same on a document, simulation , or experiment. In addition, the predetermined period of time can also be appropriately decided by the internal control unit 67 according to the conditions of the refrigerated environment at those times (specifically, the floor temperature Tf, whether or not there are people in the refrigerated environment, and the temperature inlet air Tr). Air Volume Control
[00098] In addition, the internal control unit 67 controls the air volume of the internal fan 41. The air volume of the internal fan 41 can, as a result of the internal control unit 67, which changes the rotational speed of the motor. internal fan 41a, be changed in four stages between a high volume of air H in which the rotational speed of the internal fan motor 41a is the highest, an average air volume M in which the rotational speed of the internal fan motor 41a is less than the rotational speed for the air volume H, a low air volume L in which the rotational speed of the internal fan motor 41a is even lower than the rotational speed for the air volume M, and a minimum air volume LL in which the rotational speed of the internal fan motor 41a is even lower than the rotational speed for the air volume L. In this case, the air volume H, the air volume M, and the air volume L can be defined based on a remote controller request 99 and the detection values of the various sensors 61 to 63. However, the air volume LL cannot be set by means of a request from remote controller 99, but can be set in a controlled manner in the case of a predetermined control state. Remote Control Use Reception Unit
[00099] The remote control use receiving unit 69 is for receiving multiple requests from the remote controller 99 and is configured by an infrared light receiving element, for example. In specific terms, the remote control use receiving unit 69 can receive instructions to start the cooling operation or the heating operation that was given by a user via remote controller 99 and can receive settings related to the temperature set in the refrigerated environment , air volume, and air flow direction and instructions for turning on or off with a timer.
[000100] In particular, the remote control use receiving unit 69 belonging to the present modality can receive various settings related to the air flow direction that were given through the remote controller 99 from a user and, for example, it is a "cycle oscillation" mode is configured in which the speed control and the combination deviation control described above are performed. In this case, Figure 13 shows, as an example, the screens D1 and D2 that are displayed in a video 99a of the remote controller 99 in a case in which several configurations received by the remote control use receiving unit 69 are given by a user. The D1 screen is a main menu screen, and when "set the airflow direction" is selected from the main menu, a D2 mode selection screen is displayed. From screen D2, both an "independent oscillation" mode in which the horizontal propellers 71a to 71d rotate individually and independently and the "cycle oscillation" mode in which the rotation control and the combination deviation control carried out can be selected as the content of the actions of the horizontal propellers during the predetermined period of time after the start of operation. Actions (1) General Flow of Shares of the Ceiling Mounted Indoor Unit
[000101] Figures 14 and 15 are flowcharts showing a general flow of actions of the air conditioning unit 1 in which the indoor unit mounted on the ceiling 4 belonging to the present modality is used.
[000102] Step S1: In a case in which an operation such as the heating operation or the cooling operation of the air conditioner 1 is instructed to start by a user via remote controller 99 (YES in step S1) , the outdoor unit 2 and the ceiling mounted indoor unit 4 start operation.
[000103] Steps S2 and S3: In a case in which the "cycle oscillation" mode is set via remote controller 99 before the instruction to start the operation is given (YES in step S2), the internal control unit 67 performs the rotation control of the horizontal propellers 71a to 71d and the deviation control of the combination of the first horizontal propellers belonging to Figures 11 and 12 (step S3). That is, the internal control unit 67 performs the rotation control in such a way that the first horizontal propellers oscillate synchronously while assuming the same posture and performs the rotation control that fixes the second horizontal propellers at the predetermined angle. In addition, the internal control unit 67 moves the combination of the first horizontal propellers, one propeller at a time clockwise, as seen in a bottom view of the decorative panel 52, whenever the first horizontal propellers oscillate once.
[000104] Step S4: In a case in which the "independent oscillation" mode is set in step S2 (NOT in step S2), the internal control unit 67 rotates individually, instead of synchronously rotating, the horizontal propellers 71a to 71d (step S4).
[000105] Steps S5 and S6: In a case in which the predetermined period of time elapsed after the instruction to start the operation belonging to step S1 is given (YES in step S5), the internal control unit 67 ends the control of the horizontal helices 71a to 71d belonging to steps S3 and S4 (step S6).
[000106] Steps S7 and S8: In a case where the content of the operation that was instructed in step S1 is "heating operation" (YES in step S7), the internal control unit 67 performs the control of the steering angles air flow rate of the horizontal propellers 71a to 71d and the air volume control based on the air flow direction and air volume that were requested through the remote controller 99 in such a way that the refrigerated environment is heated according to desired settings (step S8).
[000107] Steps S9 and S10: In a case where the content of the operation that was instructed in step S1 is the "cooling operation" (YES in step S9), the internal control unit 67 performs the control of the steering angles of air flow from horizontal propellers 71a to 71d and the control of air volume based on the direction of air flow and the volume of air that were requested through remote controller 99 in such a way that the refrigerated environment is cooled according to desired settings (S10).
[000108] Step S11: The operation in steps S8 and S10 is done continuously until the operation of the air conditioner 1 is instructed to be completed through remote controller 99 (NOT in step S11). When the operation of the air conditioner 1 is instructed to be completed (YES in step S11), the outdoor unit 2 and the indoor unit mounted on the ceiling 4 finish the operation. (2) Heating operation
[000109] The actions in case the air conditioner 1 performs the heating operation (step S8) will be described below.
[000110] The heating operation is an operation in which the air conditioning unit 1 heats the air in the refrigerated environment and supplies the heated air as air conditioning to the refrigerated environment by causing the refrigerant in the refrigerant circuit 10 to circulate in such a way. so that the external heat exchanger 23 functions as an evaporator for the refrigerant and the internal heat exchanger 42 functions as a radiator for the refrigerant.
[000111] In the heating operation, the four-way switching valve 22 is switched in such a way that the external heat exchanger 23 functions as an evaporator for the refrigerant and the internal heat exchanger 42 functions as a radiator for the refrigerant ( that is, the state indicated by the dashed lines of the four-way switching valve 22 in Figure 1).
[000112] In this state of the refrigerant circuit 10, the low pressure refrigerant in the refrigeration cycle is sucked into compressor 21, is compressed to a high pressure in the refrigeration cycle, and is then discharged. The high pressure refrigerant that is discharged from the compressor 21 is directed through the four-way switching valve 22, the gas shut-off valve 26, and the gas refrigerant connection pipe 6 to the internal heat exchanger 42. The refrigerant high pressure which is directed to the internal heat exchanger 42 exchanges heat in the internal heat exchanger 42 with the air in the refrigerated environment supplied by the internal fan 41 and dissipates the heat. As a result, the air in the refrigerated environment is heated, becomes air conditioned, and is blown into the refrigerated environment from the air outlet 56 (specifically, from the side air vents 56a to 56d and the air vents at the edges 56e at 56h). The high pressure refrigerant that dissipates heat in the internal heat exchanger 42 is directed through the liquid refrigerant connection pipe 5 and the liquid shut-off valve 25 to the expansion valve 24 in which its pressure is reduced to a low pressure in the refrigeration cycle. The low pressure refrigerant whose pressure was reduced in the expansion valve 42 is directed to the external heat exchanger 23. The low pressure refrigerant which is directed to the external heat exchanger 23 exchanges heat in the external heat exchanger 23 with air environment supplied by external fan 27 and evaporates. The low pressure refrigerant that is evaporated in the external heat exchanger 23 is again sucked into the compressor 21 via the four-way switching valve 22.
[000113] In the heating operation, the intake air temperature Tr is controlled so that it becomes a target air temperature Trs that is requested from remote controller 99 or something like that. That is, in the heating operation, in a case where the intake air temperature Tr is lower than the target air temperature Trs, the internal control unit 67 performs the operation control (hereinafter this state will be called a "state Heating thermostat ON "). In addition, in a case where the intake air temperature Tr reaches the target air temperature Trs, the internal control unit 67 performs a control that interrupts the compressor 21 in order to ensure that the refrigerant in the refrigerant circuit 10 does not. circulate and change the air volume of the internal fan 41 to the air volume LL (hereinafter this state will be called a "OFF state of the heating thermostat").
[000114] In addition, in a case in which control based on the requested air flow direction and the requested air volume is done, the internal control unit 67 can control the air flow direction angles of the horizontal propellers 71a to 71d and the internal fan air volume 41 while defining them for a variety of airflow directions and air volumes based on the detection results of the various sensors 61 to 63 so that the level of user comfort in the refrigerated environment can be elevated.
[000115] For example, in a case in which the presence sensor 62 detects the presence of a person in the target areas of air conditioning A to D, the internal control unit 67 can define, based on the detection value, the angle of the air flow direction of the horizontal propeller at the side outlet air outlet corresponding to the target area of air conditioning in which the person's presence is detected for the air flow direction P0. On the other hand, in the target areas of air conditioning in which no presence of a person is detected in the target areas of air conditioning A to D, the internal control unit 67 can configure the air flow direction angles of the horizontal propellers at the exits lateral air vents corresponding to the air conditioning target areas in which no presence of a person is detected for the air flow directions P1 to P3 facing more downward than in the direction of air flow P0. As a result, the discomfort caused by a draft over a user present in the target areas of air conditioning A to D can be suppressed and the user's comfort level may become greater.
[000116] In addition, in a case in which the floor temperature Tf in the refrigerated environment detected by the floor temperature sensor 63 is lower than a target floor temperature Tfs, the internal control unit 67 may configure the steering angles of air flow from horizontal propellers 71a to 71d for downward facing airflow directions (for example, for P3 and P4 airflow directions). On the other hand, in a case where the floor temperature Tf in the refrigerated environment reaches the target floor temperature Tfs, the internal control unit 67 will be able to configure the air flow direction angles of the horizontal propellers 71a to 71d for the directions airflow directions (for example, for airflow directions P0 and P1) facing more upward than for airflow directions P3 and P4. As a result, in a case in which the proximity of the floor in the refrigerated environment is not sufficiently heated, the heated air may reach the floor and the user's comfort level in the refrigerated environment may be improved.
[000117] In addition, the internal control unit 67 can also change the air flow direction angles of the horizontal propellers 71a to 71d and the air flows based on an average temperature of the intake air temperature Tr detected by the sensor of intake air temperature 61 and the floor temperature Tf in the refrigerated environment and also a combination of the average temperature and the presence result of the presence sensor 62. (3) Refrigeration Operation
[000118] The actions in case the air conditioner 1 performs the cooling operation (step S10) will be described below.
[000119] The refrigeration operation is an operation in which the air conditioner 1 cools the air in the refrigerated environment and supplies the cooled air as air conditioning to the refrigerated environment by causing the refrigerant in the refrigerant circuit 10 to circulate in such a way. so that the external heat exchanger 23 functions as a radiator for the refrigerant, and that the internal heat exchanger 42 functions as an evaporator for the refrigerant.
[000120] In refrigeration operation, the four-way switching valve 22 is switched in such a way that the external heat exchanger 23 acts as a radiator for the refrigerant and the internal heat exchanger 42 functions as an evaporator for the refrigerant ( that is, the state indicated by the solid lines of the four-way switching valve 22 in Figure 1).
[000121] In this state of the refrigerant circuit 10, the low pressure refrigerant in the refrigeration cycle is sucked into compressor 21, is compressed to a high pressure in the refrigeration cycle, and is then discharged. The high pressure refrigerant that is discharged from the compressor 21 is directed through the four-way switching valve 22 to the external heat exchanger 23. The high pressure refrigerant that is directed to the external heat exchanger 23 exchanges heat in the heat exchanger. external heat 23 with the ambient air supplied by the external fan 27 and dissipate the heat. The high pressure refrigerant that dissipates heat in the external heat exchanger 23 is directed to the expansion valve 24 where its pressure is reduced to a low pressure in the refrigeration cycle. The low pressure refrigerant whose pressure was reduced at the expansion valve 24 is directed through the liquid shut-off valve 25 and the liquid refrigerant connection tube 5 to the internal heat exchanger 42. The low pressure refrigerant that is directed to the internal heat exchanger 42 exchanges heat in the internal heat exchanger 42 with the cooled room air supplied by the internal fan 41 and evaporates. As a result, the air in the refrigerated environment is cooled, becomes air conditioned, and is blown into the refrigerated environment from the air outlet 56 (specifically, the side air vents 56a to 56d and the air vents at the edges 56e at 56h). The low-pressure refrigerant that is evaporated in the internal heat exchanger 42 is again sucked into the compressor 21 through the gas refrigerant connection pipe 6, the gas shut-off valve 26, and the four-way switching valve 22 .
[000122] In the cooling operation, the intake air temperature Tr is controlled so as to become the target air temperature Trs that is requested by remote controller 99 or something like that. That is, in the refrigeration operation, in a case in which the intake air temperature Tr is higher than the target air temperature Trs, the internal control unit 67 performs the operation control (hereinafter this state will be called a " cooling thermostat ON state "). In addition, in a case where the intake air temperature Tr reaches the target air temperature Trs, the internal control unit 67 performs a control that interrupts the compressor 21 in order to ensure that the refrigerant in the refrigerant circuit 10 does not. circulate and change the air volume of the internal fan 41 to the air volume LL (hereinafter this state will be called an "OFF state of the cooling thermostat").
[000123] In addition, in a case in which control based on the requested air flow direction and the requested air volume is performed, the internal control unit 67 will be able to control the air flow direction angles of the horizontal propellers 71a to 71d and the air volume of the internal fan 41 while adjusting them for a variety of airflow directions and air volumes based on the detection results of the various sensors 61 to 63 so that the comfort level of the in the refrigerated environment can be greater.
[000124] For example, in a case where the presence sensor 62 detects the presence of a person in the target areas of air conditioning A to D, the internal control unit 67 can adjust, based on the detection value, the angle of air flow direction of the horizontal propeller at the air outlet of the lateral portion corresponding to the target area of air conditioning in which the presence of the person was detected for the direction of air flow P0. On the other hand, in the target areas of air conditioning in which no presence of a person is detected in the target areas of air conditioning A to D, the internal control unit 67 will be able to adjust the air flow direction angles of the horizontal propellers at the outlets air vents corresponding to the target areas of air conditioning in which no presence of a person is detected in the air flow directions P1 to P3 facing more downward than in the air flow direction P0. As a result, the discomfort caused by a draft over a user present in the target areas of air conditioning A to D can be suppressed and the user's comfort level may be higher. Characteristics
[000125] The indoor unit mounted on the ceiling 4 belonging to the present modality has the following characteristics. (1) In a conventional indoor unit, the indoor unit churns the air in the refrigerated environment by causing the adjacent horizontal propellers to oscillate in opposite directions. However, in this indoor unit, the air flows directed to the cooled environment of the adjacent horizontal propellers end up weakening and the speed of the air flow begins to drop. Consequently, the force with which the air in the refrigerated environment is agitated becomes weaker, and it starts to become difficult to direct the blown air from the air outlet to places away from the indoor unit. In addition, even if the indoor unit causes only one horizontal propeller to oscillate and move the horizontal oscillating propeller in order, the volume of air oriented from a horizontal propeller to the refrigerated environment is small, and the air cannot be sufficiently stirred in the environment.
[000126] In contrast, in the indoor unit mounted on the ceiling 4 belonging to the present modality, the first horizontal propellers which are two of the horizontal propellers 71a to 71d adjacent to each other oscillate synchronously while assuming the same posture. As a result, the air blown from the air outlet 56 is directed to the refrigerated environment in such a way as to be surrounded by the first horizontal propellers, and the air in the refrigerated environment becomes agitated. Consequently, in the indoor unit mounted on the ceiling 4 belonging to the present modality, a greater agitation effect can be obtained in comparison with a case in which the adjacent horizontal propellers individually perform different oscillations, and the air blown into the refrigerated environment from the air outlet 56 of the indoor unit mounted on the ceiling 4 can be directed further away.
[000127] In particular, in the present embodiment, the combination of the first horizontal propellers is shifted in order along the peripheral edge portion of the decorative panel 52. For this reason, a greater agitation effect may be obtained compared to a case in which the combination of the first horizontal propellers that oscillate synchronously is fixed. (2) In addition, in the indoor unit mounted on the ceiling 4 belonging to this modality, the combination of the first horizontal propellers moves sequentially, one propeller at a time. For this reason, the air in the refrigerated environment becomes more easily agitated. (3) In addition, in the indoor unit mounted on the ceiling 4 belonging to this modality, the combination of the first horizontal propellers is deflected whenever the first horizontal propellers rotate alternately a predetermined number of times in the up and down direction with in relation to the air outlet 56. That is, synchronization when the combination of the first horizontal propeller deviations corresponds to the action of the alternative rotation of the first horizontal propellers. For this reason, when configuring the number of times that the first horizontal propellers rotate alternately, the long range of the blown air may be given priority or the agitation of the air in the refrigerated environment may be given priority. (4) In addition, in the indoor unit mounted on the ceiling 4 belonging to this modality, the second horizontal propellers, which are the other propellers, except for the first horizontal propellers, are fixed at the predetermined angle while the first horizontal propellers oscillate synchronously at the same time. in which they assume the same posture. For this reason, the air in the refrigerated environment is agitated by the first horizontal propellers that oscillate, and the air in the refrigerated environment is directed away, for example, by the second horizontal propellers. (5) In addition, in the indoor unit mounted on the ceiling 4 belonging to the present modality, as shown in Figure 11, the so-called TA rest periods are arranged in which the actions of the first horizontal propellers temporarily stop when the rotational directions of the first horizontal propellers are changed. This is because, when the rotational directions end up immediately changing from the descending direction to the ascending direction during the heating operation, for example, it is difficult for the vicinity of the floor in the refrigerated environment to become heated. As a result, when the air in the refrigerated environment is agitated, the air blown from the air outlet 56 is reliably blown in a horizontal direction or in a vertical direction, for example. Consequently, when the rotational directions change from the downward direction to the upward direction during the heating operation, for example, the air heated from the air outlet 56 is blown in the downward direction, so that the proximity of the floor can be heated, at the same time resolving the imbalance in the temperature of the refrigerated environment.
[000128] Furthermore, when the rotational directions change from the upward to the downward direction during the cooling operation, for example, the cold air from the air outlet 56 is blown in the upward direction, so that the discomfort that a user experiences as a result of a so-called cold draft can be suppressed. (6) In addition, in the indoor unit mounted on the ceiling 4 belonging to this modality, until the predetermined period of time runs out after the start of operation, the action of the first horizontal propellers that oscillate synchronously at the same time that they assume the same posture and the action of the combination of the first horizontal helices that move in order along the peripheral edge portion of the lower surface are performed. However, after the predetermined period of time has elapsed, these actions end and the horizontal propellers 71a through 71d tilt at the predetermined angle. As a result, the air with the desired temperature can be supplied to the refrigerated environment, whose air is sufficiently agitated, and, therefore, the discomfort that a user experiences due to a draft can be suppressed and the refrigerated environment can be removed. make comfortable. (7) In addition, in the indoor unit mounted on the ceiling 4 belonging to the present modality, the first horizontal propellers adjacent to each other through an air outlet of arbitrary edge portion 56e at 56h oscillate synchronously while assuming the same posture. In addition, the combination of the first horizontal propellers moves sequentially. For this reason, the air blown from the air vents at the edges 56e to 56h is, together with the air blown from the side air vents 56a to 56d, opened and closed by the first horizontal propellers, reliably directed away by the first propellers. horizontal while incorporating some air into the refrigerated environment. Consequently, the air in the refrigerated environment can be further agitated by the air that is blown out, and a greater amount of air conditioning can be directed away, compared to the case of causing the individual horizontal propellers to oscillate separately without synchronizing. the same. (8) In particular, in the present embodiment, the first horizontal propellers are configured by two of the horizontal propellers 71a to 71d adjacent to each other. As a result, the air in the refrigerated environment can be effectively agitated and more air conditioning can be directed away. Other Modalities
[000129] One embodiment of the present invention has been described above based on the drawings, however the specific configurations of the same are not limited to that modality and are changeable without departing from the essence of the present invention. (A) In the above modality, a case has been described in which the combination of the first horizontal propellers moves whenever the first horizontal propellers oscillate once. However, the internal control unit 67 can still bypass the combination of the first horizontal propellers after the first horizontal propellers oscillate two or more times instead of once.
[000130] Furthermore, as shown in Figure 16, the internal control unit 67 can also bypass the combination of the first horizontal propellers whenever the first horizontal propellers oscillate for a predetermined period of time (corresponding to a first predetermined period of time) ). In this case, as an example, Figure 16 shows a case in which the combination of the first horizontal propellers changes every minute. In Figure 16, as in Figure 12, the horizontal propellers that are hidden represent the first horizontal propellers, and the horizontal propellers that are not covered represent the second horizontal propellers.
[000131] The number of times the first horizontal propellers oscillate and the period of time in which the first horizontal propellers oscillate, which serves as the synchronization when the combination of the first horizontal propellers moves, can be decided in advance when working the same in a document, simulation, or experiment or can be appropriately decided by the internal control unit 67 according to the conditions in the refrigerated environment at those times (specifically, the floor temperature Tf, whether there are people in the refrigerated environment or not, and the temperature inlet air Tr). By properly defining the time period in which the first horizontal propellers oscillate, the long range of the blown air can be given priority or the agitation of air in the refrigerated environment can be given priority. (B) In the above embodiment, a case has been described in which the combination of the first horizontal propellers moves sequentially clockwise, as seen in a bottom view of the decorative panel 52. However, the combination of the first horizontal propellers can still move sequentially counterclockwise, as seen in a bottom view of decorative panel 52. Whether the combination of the first horizontal propellers should move clockwise or counterclockwise can be decided in advance when working the same in a document, simulation, or experiment or can be appropriately decided by the internal control unit 67 according to the conditions in the refrigerated environment at those times (specifically, the floor temperature Tf, whether or not there are people in the refrigerated environment, and the temperature inlet air Tr). (C) In the above modality, a case has been described in which, as shown in Figure 11, the second horizontal propellers are fixed in the air flow direction "P0." However, the angle at which the second horizontal propellers are fixed is not limited to the "P0" air flow direction and can be any angle. For example, the second horizontal propellers can be fixed at an angle corresponding to the air flow direction facing downward direction "P4" in the case of heating operation and fixed at an angle corresponding to the air flow direction facing direction ascending "P1" in the case of cooling operation.
[000132] In addition, the second horizontal propellers can also oscillate slightly between the airflow direction P0 and the airflow direction P1, for example, instead of being fixed at a predetermined angle while the first horizontal propellers oscillate between the airflow direction P0 and the airflow direction P4. In this case, the oscillation of the second horizontal propellers is sufficiently small compared to the oscillation of the first horizontal propellers. (D) In the above modality, a case has been described in which the first horizontal propellers are configured by two propellers. However, the number of propellers that make up the first horizontal propellers can also be greater than two, such as three, for example. In this regard, however, in a case where N represents the number of horizontal propellers arranged in the ceiling-mounted indoor unit, the upper limit of the number of propellers that make up the first horizontal propellers must be equal to or less than N-1. That is, it is necessary that an M number of the propellers that configure the first horizontal propellers meet the condition of "2 <M <N-1."
[000133] Figures 17 and 18 show a case in which the first horizontal propellers are configured by three of the horizontal propellers adjacent to each other. In specific terms, as shown in Figures 17 and 18, examples of combinations of the first horizontal propellers include the combination of horizontal propellers 71a, 71b, and 71c, the combination of horizontal propellers 71b, 71c, and 71d, the combination of horizontal propellers 71c, 71d, and 71a, and the combination of the horizontal propellers 71d, 71a, and 71b. In addition, in a case in which the combination of the first horizontal propellers turns out to be horizontal propellers 71a to 71c, for example, horizontal propeller 71d unlike horizontal propellers 71a to 71c becomes the second horizontal propeller. In this case, the horizontal propellers 71a to 71c, which become the first horizontal propellers, oscillate synchronously while assuming the same posture, and the horizontal propeller 71d, which becomes the second horizontal propeller, is fixed at a predetermined angle (by example, in the air flow direction P0). In addition, after the first horizontal propellers oscillate once, the combination of the first horizontal propellers is shifted in order along the peripheral edge portion of the decorative panel 52. In specific terms, in Figures 17 and 18, the combination of the first propellers horizontal moves one propeller at a time in a clockwise direction, as seen in a bottom view of decorative panel 52. That is, emphasizing the individual horizontal propellers 71a to 71d, after each of the horizontal propellers 71a to 71d has oscillated consecutively three times , they assume positions in which they are fixed at a predetermined angle for an oscillation of the other propellers. The synchronizations when the horizontal propellers 71a to 71d start to oscillate again from their fixed postures do not coincide between the horizontal propellers 71a to 71d, but differ for each of the horizontal propellers 71a to 71d. As a result, the air in the refrigerated environment can be effectively agitated and more air conditioning can be directed away.
[000134] In addition, in Figures 17 and 18, a case has been described in which the combination of the first horizontal propellers displaces one propeller each time, as shown in the displacement of the horizontal propeller combination 71a, 71b, and 71c for the combination horizontal propellers 71b, 71c, and 71d. However, in a case in which the first horizontal propellers are configured by three of the horizontal propellers, the combination is not limited to a case in which it moves one propeller at a time and can also move two propellers at a time. Examples of cases in which the combination of the first horizontal propellers displaces two propellers at a time include an offset from the combination of horizontal propellers 71a, 71b, and 71c to the combination of horizontal propellers 71c, 71d, and 71a. (E) In the above embodiment, a case has been described in which, as shown in Figure 11, all horizontal propellers 71a to 71d tilt at a predetermined angle after the cycle oscillation mode has been performed and the predetermined period of time run out after the start of operation. However, the horizontal propellers that switch to the tilt action at the predetermined angle after the end of the predetermined period of time may still be only the horizontal propellers that were the first horizontal propellers just before the predetermined period of time has elapsed. For example, the horizontal propellers that were the second horizontal propellers just before the predetermined period of time elapses can still, even after the end of the predetermined period of time, continue to assume the posture they had in which they were fixed without oscillation . (F) In the above modality, a case was described in which there were four horizontal propellers - that is, a case in which the air conditioner is blown in four directions. However, the number of horizontal propellers is not limited to this one and can also be more than four. That is, the indoor unit mounted on the ceiling 4 belonging to the present invention can still be applied to a case in which it blows the air conditioner in more than four directions. (G) In the above embodiment, a type of the indoor unit mounted on the ceiling 4 has been described in which the air outlet 56 and the four horizontal propellers 71a to 71d are arranged in the decorative panel 52 corresponding to the lower surface of the box 51. However, the ceiling-mounted indoor unit belonging to the present invention can also be used in a type of indoor unit in which air vents are arranged on each side surface of the box. (H) In the above modality, a case has been described in which TA rest periods must have a predetermined value in advance. However, TA rest periods can also be appropriately modified according to the detection results of the various sensors 61 to 63 at those times.
[000135] For example, it must be assumed that, during the heating operation, a person in the target air conditioning areas A to D has not been detected by the presence sensor 62. In this case, in a case where the temperature Tf floor temperature is low and the temperature difference between the intake air temperature Tr detected by the intake air temperature sensor 61 and the floor temperature Tf detected by the floor temperature sensor 63 is equal to or greater than a first difference temperature, the internal control unit 67 can set the TA rest periods for a long duration (for example, 5 seconds). In contrast, in a case where the floor temperature Tf is high and the temperature difference is equal to or less than a second temperature difference and is less than the first temperature difference, the internal control unit 67 can define the TA rest periods for a short duration (for example, 1 second).
[000136] In addition, the length of the rest periods may be different depending on whether the content of the operation that you have been instructed to initiate is a heating or cooling or may differ according to the air flow direction of the blown air from the air outlet 56. For example, during the heating operation, rest periods can be set for a short duration in a case where the air flow direction angles of the horizontal propellers 71a to 71d are in the flow direction of air P0 and defined for a long duration in a case in which the air flow direction angles of the horizontal propellers 71a to 71d meet in the air flow direction P4. As a result, when the rotational directions change, the air that has been heated by the heat exchanger is not much blown in an approximately horizontal direction, but is blown for a relatively long time in an approximately vertical direction. Consequently, the floor temperature Tf can rise during the stirring of air in the refrigerated environment. In addition, during the cooling operation, the rest periods can be defined for a long duration in a case in which the air flow direction angles of the horizontal propellers 71a to 71d are in the air flow direction P0 and defined for a short duration in a case in which the air flow direction angles of the horizontal propellers 71a to 71d meet in the air flow direction P4. As a result, even if the air in the refrigerated environment is being agitated, when the rotational directions are changed, the air that has been cooled by the heat exchanger is not much blown in an approximately vertical direction, but is blown for a relatively long time. in an approximately horizontal direction. Consequently, the discomfort that a user experiences due to a cold draft can be suppressed. (I) In the above modality, the action of the first horizontal propellers oscillate synchronously at the same time that they assume the same posture and the action of the combination of the first horizontal propellers that move sequentially have been described as being carried out until the predetermined period of time has passed. exhausts after the start of operation. However, these actions are not limited to being performed during the predetermined period of time after the start of operation (that is, immediately after the air conditioner is turned on) and can still be performed during normal operation in which the air conditioner is turned on. air conditioning regulates, by means of heating or cooling, the environment at a temperature requested by a user. INDUSTRIAL APPLICABILITY
[000137] The present invention is widely applicable to indoor units mounted on the ceiling for an air conditioning unit, in which several horizontal propellers, whose air flow direction angles in an up and down direction are capable of being changed independently, they are arranged in an air outlet. LIST OF REFERENCE SIGNS 1 - Air conditioning unit 4 - Ceiling mounted indoor unit 39 - External control unit 41 - Internal fan 51 - Box 56 - Air outlet 56a, 56b, 56c, 56d - Side air vents 56e, 56f, 56g, 56h - Air vents at the edges 61 - Intake air temperature sensor 62 - Presence sensor 63 - Floor temperature sensor 71a, 71b, 71c, 71d - Horizontal propellers 67 - Internal control unit 69 - Remote control use receiving unit 99 - Remote controller 99a - Video D1, D2 - Screens Displayed on the Remote Controller Video CITATION LIST Patent Literature
[000138] Patent Citation 1: Unexamined Japanese Patent Publication N.2009-103417

权利要求:
Claims (10)
[0001]
1. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) arranged on a ceiling in a refrigerated environment, the ceiling-mounted indoor unit (4) comprising: a box (51) in which an air outlet (56) is formed along a peripheral edge portion of a lower surface of the box (51); at least four horizontal propellers (71a, 71b, 71c, 71d) which are rotatably arranged at the air outlet (56) and whose airflow direction angles in an up and down direction are capable of being changed from independently; and a control unit (67) characterized by the fact that it controls the horizontal propellers (71a, 71b, 71c, 71d) so that the first horizontal propellers, which are at least two of the horizontal propellers adjacent to each other between the horizontal propellers ( 71a, 71b, 71c, 71d), oscillate synchronously while assuming the same posture and a combination of the first horizontal propellers moves in order along the peripheral edge portion.
[0002]
2. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to claim 1, characterized by the fact that the control unit (67) moves the combination of the first horizontal propellers sequentially, a propeller each time.
[0003]
3. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to claim 1 or 2, characterized by the fact that the control unit (67) moves the combination of the first horizontal propellers whenever the first horizontal propellers rotate alternately a predetermined number of times in the upward and downward direction with respect to the air outlet.
[0004]
4. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to claim 1 or 2, characterized by the fact that the control unit (67) moves the combination of the first horizontal propellers whenever the first horizontal propellers oscillate for a first predetermined period of time.
[0005]
5. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to any one of claims 1 to 4, characterized by the fact that the control unit (67) places the second horizontal propellers, which are the other propellers among the at least four horizontal propellers (71a, 71b, 71c, 71d) with the exception of the first horizontal propellers, in a state in which the second horizontal propellers are fixed at a predetermined angle while the first horizontal propellers oscillate synchronously while assume the same posture.
[0006]
6. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to any one of claims 1 to 5, characterized by the fact that: the first horizontal propellers (71a, 71b, 71c, 71d) they rotate alternately up and down with respect to the air outlet, and the control unit (67) temporarily interrupts the actions of the first horizontal propellers when the rotational directions of the first horizontal propellers are changed.
[0007]
7. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to any one of claims 1 to 6, characterized by the fact that: for a second predetermined period of time after the start of operation, the control unit (67) controls the horizontal propellers (71a, 71b, 71c, 71d) in such a way that the first horizontal propellers oscillate synchronously while assuming the same posture and the combination of the first horizontal propellers moves in order along the portion peripheral edge; and after the end of the second predetermined period of time after the start of operation, the control unit (67) tilts the first horizontal propellers at a predetermined angle.
[0008]
8. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to any one of claims 1 to 7, characterized in that: the bottom surface of the box (51) is substantially shaped quadrilateral, in plan view; four of the horizontal propellers (71a, 71b, 71c, 71d) are arranged in correspondence on each side of the bottom surface; and the air outlet (56) has air vents at the edges that are divided by the horizontal propellers (71a, 71b, 71c, 71d) and correspond to each edge portion of the bottom surface.
[0009]
9. Ceiling-mounted indoor unit (4) for an air conditioning unit (1) according to claim 8, characterized by the fact that the first horizontal propellers are configured by two of the horizontal propellers adjacent to each other.
[0010]
10. Ceiling-mounted indoor unit (4) for an air conditioning unit (1), according to claim 8, characterized by the fact that the first horizontal propellers are configured by three of the horizontal propellers adjacent to each other.

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JP2016217693A|2015-11-30|2016-12-22|パナソニックＩｐマネジメント株式会社|Ceiling embedded type indoor unit|

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WO2018179349A1|2017-03-31|2018-10-04|三菱電機株式会社|Control device and air-conditioning system|

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KR102090647B1|2017-09-20|2020-05-22|엘지전자 주식회사|Ceiling type indoor unit of air conditioner|

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CN110121621B|2017-12-05|2021-04-27|日立江森自控空调有限公司|Indoor unit of air conditioner|

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WO2019155513A1|2018-02-06|2019-08-15|日立ジョンソンコントロールズ空調株式会社|Indoor unit of air conditioner|

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KR102168705B1|2018-05-15|2020-10-22|엘지전자 주식회사|Method for controlling a ceiling type air conditioner|

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KR20200075504A|2018-12-18|2020-06-26|엘지전자 주식회사|Ceiling type indoor unit of air conditioner|

法律状态:
2018-03-27| B15K| Others concerning applications: alteration of classification|Ipc: F24F 1/00 (2011.01), F24F 13/14 (2006.01) |

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2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-10-22| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-09-01| B09A| Decision: intention to grant|

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2020-12-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/01/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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JP2010-014629|2010-01-26|

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JP2010014629|2010-01-26|

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PCT/JP2011/051505|WO2011093343A1|2010-01-26|2011-01-26|Ceiling-mounted indoor unit for air conditioning device|

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