• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    external unit for air conditioning unit. an external unit for air conditioner includes: main body of external unit (5), heat exchanger (13) housed in the main body of external unit (5), fan (23) supplied in an upper part of the main body of the unit external (5), the fan blowing out and upward the air sucked from the lateral surfaces of the main body of the external unit (5), ventilation element (30a) around an external circumference of the fan (23) and formation of a air blast opening, an electrical component unit (38) accommodated in the main body of the external unit (5) and arranged in an opening part (36) between an end part on one side (32a) and the end part of the the other side (35a) of the external heat exchanger (13), where the electrical component unit (38) is provided so that it passes through a lower end of the ventilation element (30a) in the up and down direction, and in the upper side of the lower end of the and ventilation element (30), the electrical component unit (38) is arranged on the outer side horizontally of the ventilation element (30a).
    公开号:BR112014007365B1
    申请号:R112014007365-1
    申请日:2012-09-28
    公开日:2021-04-13
    发明作者:Shigeki Kamitani；Mikio Kagawa；Fumiaki Koike；Hiroshi Fuchikami
    申请人:Daikin Industries, Ltd.；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [0001] The present invention relates to an external unit for an air conditioner. TECHNICAL BACKGROUND
    [0002] Patent Literature 1 described below describes an upward blow-type external unit that blows out the air taken inside a side surface of the main body of an external unit (housing) upward, driving a fan supplied in an upper part of the main body of the outdoor unit. In this outdoor unit, a U-shaped heat exchanger in a plan view is provided, in order to face three side surfaces of the substantially cubic main body of the outdoor unit. In an opening part formed between one side of the end part and the other side of the end part of the heat exchanger, a control box (unit of electrical components) is arranged so as to face the surface of a remaining side of the body main unit of the external unit. CITATION LIST PATENT LITERATURE
    [0003] Patent Literature 1: Unexamined Japanese Patent Publication No. 2004-156872. SUMMARY OF THE INVENTION Technical problem
    [0004] In this type of outdoor unit, it is desired to reduce the size while maintaining a heat exchange capacity and an increase in the heat exchange capacity, without an increase in size. Therefore, it is thought that the heat exchanger is extended, so as to face not only three side surfaces of the main body of the external unit, but four side surfaces.
    [0005] However, when a strip of the heat exchanger is extended, the opening part between the end part of the side and the end part of the other side of the heat exchanger is reduced, and a proportion of a space of control box arrangement in the opening part is increased. The opening part is used not only to arrange the control box, but also to carry out maintenance and replacement of devices accommodated in the main body of the external unit. Thus, when the proportion of the control box disposal space in the opening part is increased, the feasibility of maintenance and the like is not easily ensured. Even in a case where the heat exchanger interval is not extended, the reduction in the proportion of the space of the control box in the opening part is effective to increase the feasibility of maintenance and the like.
    [0006] The present invention is achieved in consideration of the situation described above, and an objective of the same is to provide an external unit for an air conditioning unit, capable of reducing the proportion of a space of disposal of a unit of electrical components in an opening part between the end part on one side and the end part on the other side of a heat exchanger as much as possible, in order to ensure the feasibility of maintenance and similar devices in the main body of an external unit . Solution of the problem
    [0007] An external unit for an air conditioning unit according to the present invention includes:
    [0008] a main body of the external unit;
    [0009] a heat exchanger accommodated in the main body of an external unit;
    [00010] a fan supplied in an upper part of the main body of the external unit, the fan blowing out and upward the air sucked from the lateral surfaces of the main body of the external unit.
    [00011] a ventilation element around an external circumference of the fan and the formation of an air blowing opening; and
    [00012] an electrical component unit accommodated in the main body of the external unit and arranged in an opening part between the end part on one side and the end part on the other side of a heat exchanger;
    [00013] wherein the electrical component unit is provided so that it passes through a lower end of the ventilation element in the up and down direction, and a part of the electrical component unit arranged on the upper side of the lower end of the ventilation element is arranged on the outer side horizontally of the ventilation element.
    [00014] In a type of upward external blowing unit including a fan in an upper part of the main body of the external unit, there is often a case where a part on the horizontal external side of a ventilation element around an external circumference of the fan hardly contributes to an air flow, which serves as a so-called dead space. Therefore, in the external unit of the present invention, by placing a part of the electrical component unit in the dead space, a proportion of a space for the disposition of the electrical component unit in the opening part between the end part on one side and the part te of the end on the other side of the heat exchanger on the underside from the air vent element is reduced. In this way, the opening part can be used as widely as possible for a job such as maintaining and replacing devices on the main body of the outdoor unit, so that workability can be improved. The part of the electrical component unit hardly influences the air flow over the upper side of the lower end of the ventilation element, so that the heat exchange efficiency is not impaired.
    [00015] Preferably, the main body of the external unit is made in a square format in a plan view, and the heat exchanger is provided, in order to face the four lateral surfaces of the main body of the external unit.
    [00016] In such a way, since the heat exchanger is arranged to face the four side surfaces of the main body of the outdoor unit, the outdoor unit can be compacted while maintaining a heat exchange capacity, or the ability to heat exchange can be increased without increasing the size of the outdoor unit. In addition, since the proportion of the electrical component unit's disposal space in the opening part can be reduced as described above, the workability as well as the maintenance carried out through the opening part is not impaired.
    [00017] Preferably, the heat exchanger is provided in order to face the four side surfaces in a strip excluding a corner part of the main body of the external unit, and the electrical component unit is arranged in the corner part.
    [00018] The fan provided in the upper part of the main body of the external unit is rotated while leaving a circular path, in a plan view, and the ventilation element around the external circumference of this fan is made in a cylindrical shape. Therefore, in the corner part of the main body of the external unit made in a square shape in a plan view on the outer horizontal side of the ventilation element, a relatively large dead space is generated. In the present invention, through the use of such a corner part, an arrangement space for a part of the electrical component unit can be ensured as widely as possible in a flat strip of the main body of the external unit.
    [00019] Preferably, the fan is arranged in such a way that the center of the fan is moved to the side of other parts of the corners of the main body of the external unit in a flat strip of the main body of the external unit.
    [00020] With such a configuration, the disposal space of the electrical component unit can be more widely ensured in the corner part of the main body of the external unit on the external horizontal side of the ventilation element, and the fan can be arranged close to a part of the heat exchanger where the air circulation area is large, so that the heat exchange efficiency can be improved.
    [00021] Preferably, a space in which the compressor is incorporated and removed is formed between the electrical component unit and the end part on one side of the heat exchanger.
    [00022] With such a configuration, the replacement and maintenance of the heat exchanger can be easily carried out.
    [00023] Preferably, the electrical component unit is supported by a beam element arranged in a horizontal direction corresponding to one of the lateral surfaces of the main body of the external unit, and the beam element has a guide rail part for, at the moment of fixing the electrical component unit to a predetermined fixing point on the main body of the external unit, guiding the electrical component unit to the fixing point.
    [00024] With such a configuration, the electrical component unit can be readily and easily positioned at an appropriate fixing point on the main body of the external unit.
    [00025] Preferably, the electrical component unit includes an electrical component box to accommodate an electrical component, and in the electrical component box, a first intake opening for the intake of air into the electrical component box is formed on the side upper part of the lower end of the ventilation element, and a discharge port for discharging air in the electrical component box is formed on the lower side of the lower end of the ventilation element.
    [00026] Inside the main body of the external unit, in a region on the lower side of the lower end of the ventilation element, the pressure becomes a negative pressure due to the action of the fan. However, in a region on the upper side of the lower end of the ventilation element and on the outer horizontal side of the ventilation element, a suction action from the fan is not exerted and the pressure becomes a positive pressure or atmospheric pressure. Therefore, due to the differential pressure between the two regions, an air flow that flows into the electrical components box from the first intake opening and is discharged outside the electrical components box of the discharge opening is formed, so that a heat release property in the electrical component box is improved.
    [00027] Preferably, a second inlet opening for the intake of air into the electrical components box is formed on the underside of the discharge opening in a lower part of the electrical components box.
    [00028] Since both the discharge opening and the second intake opening are arranged in the region on the lower side of the lower end of the ventilation element, adjacent parts of it are in a state of negative pressure. In particular, since the area around the discharge opening is narrower for the fan than the area around the second inlet opening, the pressure is lower. Therefore, due to the differential pressure between the two parts, an air flow is formed that flows into the electrical components box from the second intake opening and is discharged to the outside of the electrical components box from the electrical opening. discharge. As described above, a relatively strong air flow from the first intake port on the positive pressure side to the discharge port on the negative pressure side is generated in the electrical component box. Thus it is facilitated by this flow, the flow of air from the second inlet opening to the discharge opening. Therefore, the property of heat release in the electrical component box can be further improved.
    [00029] Preferably, a high heat generation part is arranged at the bottom of the electrical components box.
    [00030] With such a configuration, the high heat generation part can be cooled by the air removed from the second intake opening at the bottom of the electrical components box. It should be noted that according to the high heat generation part there are electrical components including a power supply module that has an element such as an IGBT there are electrical components including a power supply module that has an element such as an IGBT ( Isolated Bipolar Transistor) to drive a compressor or fan motor, a reactor, and the like.
    [00031] Preferably, a recess arrangement part for arranging a cooling refrigerant tube to cool the high heat generation part in the flat range of the electrical components box is formed at the bottom of the electrical components box.
    [00032] With such a configuration, the high heat generation part disposed at the bottom of the electrical components box can be effectively cooled by a refrigerant that flows through the refrigerant pipe for cooling. Since the coolant tube for cooling is arranged in the part of the recess arrangement formed in the electrical components box, the coolant pipe does not protrude from the flat strip of the electrical components box, so that the box of electrical components, including the cooling refrigerant pipe can be arranged in a small flat space.
    [00033] Preferably, the part of the recess arrangement is formed by embedding a part of a bottom wall of the electrical components box upwards, and an electrical wire in the components-electrical box is pulled outwards from a bottom wall in the recess arrangement part.
    [00034] With such a configuration, the electrical wire can be removed to the outside without passing through the lower part of the electrical components box in which the high heat generation part is arranged. In this way, the noise from the high heat generation part can be prevented from influencing the electrical wire. ADVANTAGE EFFECTS OF THE INVENTION
    [00035] According to the present invention, the proportion of the electrical component unit's disposal space in the opening part between the end part on one side and the end part on the other side of the heat exchanger can be reduced, both as possible, and the opening part can be widely used for work such as maintaining the devices on the main body of the outdoor unit, so that the workability can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
    [00036] FIG. 1 FIG. 1 is a schematic view showing a refrigerant circuit of an air conditioner that has an external unit according to a first embodiment of the present invention.
    [00037] FIG. 2 FIG. 2 is a perspective view showing an exterior appearance of the external unit.
    [00038] FIG. FIG. 3 is a perspective view showing a state in which the side surface panels and a top plate of the external unit are removed.
    [00039] FIG. FIG. 4 is a schematic front view showing the state in which the side surface panels and the top plate of the external unit are removed.
    [00040] FIG. FIG. 5 is a top view of the external unit from which the top plate is removed.
    [00041] FIG. FIG. 6 is a top view of the external unit.
    [00042] FIG. FIG. 7 is a schematic cross-sectional view of an electrical component box corresponding to an arrow position VII-VII in FIG. 4.
    [00043] FIG. FIG. 8 is a schematic cross-sectional view of the electrical component box corresponding to an arrow position VIIIVIII in FIG. 4.
    [00044] FIG. FIG. 9 is a schematic cross-sectional view of the electrical component box corresponding to a position of the arrow IXIX in FIG. 4.
    [00045] FIG. 10A FIG. 10 is a perspective view in which the electrical component unit is viewed obliquely from the rear rear side.
    [00046] FIG. 11A FIG. 11 is an illustrative plan view showing a process of securing the electrical component unit to a main body of an external unit.
    [00047] FIG. 12A FIG. 12 is an illustrative view showing an air flow inside the outdoor unit. DESCRIPTION OF MODALITIES
    [00048] FIG. 1 is a schematic view showing a refrigerant circuit of an air conditioner that has an external unit according to a first embodiment of the present invention.
    [00049] An air conditioner 1 is, for example, an air conditioner of the multiple type for a building in which a cooling circuit 10 is formed in such a way that a plurality of indoor units 3 are connected in parallel to one or a plurality of external units 2, in order to circulate a refrigerant fluid.
    [00050] In external unit 2, a compressor 11, a four-way valve 12, an external heat exchanger 13, an external expansion valve 14, an accumulator 20, an oil separator 21, and the like are provided. These are connected by a coolant tube. In the external unit 2, a fan 23 is provided. In the internal unit 3, an internal expansion valve 15, an internal heat exchanger 16, and the like are provided. The four-way valve 12 and the interior heat exchanger 16 are connected by a refrigerant fluid communication pipe on the gas side 17a, and the external expansion valve 14 and the internal expansion valve 15 are connected by a side pipe from coolant communication 17b. A stop valve on the gas side 18 and a side liquid stop valve 19 are provided at the end parts of the internal cooling circuit of the external unit 2. The side stop valve gas 18 is arranged on the side of the four-way valve 12 , the liquid side stop valve 19 is arranged on the side of the external expansion valve 14. The gas side refrigerant communication pipe 17a is connected to the gas side stop valve 18, and the communication pipe of refrigerant on the liquid side 17b is connected to the stop valve 19 on the liquid side.
    [00051] In a case where a cooling operation is performed on the air conditioner 1 with the above configuration, the four-way valve 12 is maintained in a state shown by solid lines in FIG. 1. A high-temperature, high-pressure refrigerant gas discharged from the compressor 11 flows into the external heat exchanger 13 through the oil separator 21 and the four-way valve 12, and performs the heat exchange with the external air. by the action of fan 23 in order to be condensed and liquefied. The liquefied refrigerant fluid passes through the external expansion valve 14 in a fully open state, and flows to the indoor units 3 through the refrigerant communication pipe 17b on the liquid side. In the internal unit 3, the coolant pressure is reduced to a predetermined low pressure via the internal expansion valve 15, and in addition, the refrigerant performs the heat exchange with the internal air in the indoor heat exchanger 16, so as to be evaporated. The internal air cooled by means of evaporation of the refrigerant is blown into an interior by an internal fan (not shown), in order to cool the interior. The evaporated and aerated refrigerant in the internal heat exchanger 16 is returned to the external unit 2 via the refrigerant communication tube 17a on the gas side, and sucked into the compressor 11 via the four-way valve 12 and the accumulator 20 .
    [00052] On the other hand, in a case where a heating operation is performed, the four-way valve 12 is maintained in a state shown by dotted lines in FIG. 1. A high temperature, high pressure refrigerant gas discharged from the compressor 11 flows into the internal heat exchanger 16 of the indoor unit 3 through the oil separator 21 and the four-way valve 12, and performs the heat exchange with the internal air in order to be condensed and liquefied. The internal air heated by condensation of the refrigerant is blown into the interior by the internal fan, in order to heat the interior. The liquefied refrigerant in the internal heat exchanger 16 is returned to the external unit 2 from the internal expansion valve 15 in a fully open state through the refrigerant communication pipe 17b on the liquid side. The pressure of the refrigerant returned to the external unit 2 is reduced to a predetermined low pressure via the internal expansion valve 14, and in addition, the refrigerant fluid exchanges heat with the external air in the external heat exchanger 13, so as to be evaporated. The evaporated and carbonated refrigerant in the external heat exchanger 13 is sucked into the compressor 11 through the four-way valve 12 and the accumulator 20.
    [00053] FIG. 2 is a perspective view of an exterior appearance of the external unit, FIG. 3 is a schematic perspective view, showing a state in which the side surface panels and a top plate of the external unit are removed, and FIG. 4 is a schematic front view showing the state in which the side surface and top plate panels of the external unit are removed. FIG. 5 is a plan view of the external unit from which the top plate is removed, and FIG. 6 is a plan view of an internal part of the external unit.
    [00054] The external unit 2 of the present embodiment is a blow-up type, and includes an external unit main body (box) 5, the devices that constitute the cooling circuit 10 (see FIG. 1) as the external heat exchanger 13, built in this main body, external unit 5, the compressor 11, the four-way valve 12, the accumulator 20, and the oil separator 21, an electrical component unit 38, and the fan 23 supplied in an upper part of the main body of the external unit 5.
    [00055] The outdoor unit 2 draws in air from the side surfaces of the main body, external unit 5, activating the fan 23, performs the heat exchange with the external heat exchanger 13, and then blows the air up from the top of the main body of the external unit 5.
    [00056] As shown in FIG. 2 and FIG. 3, the main body of the external unit 5 is formed in a substantially cubic shape, and has a bottom structure 26, support pillars 27, beam elements 28a to 28d, lower side surface panels 29, upper side surface panels 25 , an upper plate 24, and the like. The lower structure 26 is formed into a square shape in a plan view. Grounded parts of the leg 26a are provided on two sides facing forward and rear side parts of the lower frame 26. The support pillars 27 are formed by a long element elongated in the up and down direction, the long element having a section substantially L-shaped, and coupled to four corners of the bottom structure 26 by means of screws or the like.
    [00057] As shown in FIG. 2, the top plate 24 is formed in a square shape in a plan view which is substantially the same as the bottom structure 26, and arranged so as to have an opening above the bottom structure 26. The upper ends of the pillars support plates 27 are coupled to four corners of the top plate 24 by coupling tools, such as screws. A substantially square ventilation hole 24a is formed in the top plate 24, and a mesh body 24b is provided to prevent invasion of foreign substances 24a into this ventilation hole.
    [00058] As shown in FIG. 3 and FIG. 5, the beam elements 28a to 28d are arranged on the upper side of the support pillars 27, in positions that have a predetermined descending space from the top plate 24, and bridge between the support pillars 27 adjacent to each other to the others in the front and back direction and in the left and right direction. A structure of the main body of the external unit 5 is formed by structural elements including the lower structure 26, the top plate 24, the support pillars 27, and the beam elements 28a to 28d.
    [00059] A bell mouth 30 is coupled to the 28th four beam elements of 28d. This bell mouth 30 has a ventilation guide (ventilation element) 30a around a part of the outer circumference of the fan 23. The ventilation guide 30a is formed in a cylindrical shape along a circular rotation path of the fan 23 , to form an air blow opening of the main body of the external unit 5. A support base 31 (see FIG. 5) is bridged over the front and rear elements of the beam 28a and 28c, and a motor 23a ( see FIG. 4) of the fan 23 is connected to this support base 31. Therefore, the beam elements 28a and 28c also function as fixing elements for coupling the fan 23.
    [00060] As shown in FIG. 2, the upper side surface panels 25 are provided on the four side surfaces of the main body of the external unit 5 positioned between the beam elements 28a to 28d and the upper plate 24. The fan 23, the bell mouth 30, and the the upper part of the electrical component unit 38 is covered by the upper side surface panels 25 and the upper plate 24 so as not to be exposed to the outside.
    [00061] As shown in FIG. 5, a center of rotation O of the fan 23 is arranged in a substantially central part in the forward and backward direction of the main body of the external unit 5 in a position offset slightly to the right of the center. As shown in FIG. 2, the ventilation hole 24a of the top plate 24 is arranged in a position slightly offset to the right of the center to match the fan 23. It should be noted that, on the top plate 24, no ventilation holes 24a are formed in a position above the electrical component unit 38 to be described later. In this way, the electrical component unit 38 is prevented from being reached by rainwater and similarly invaded from the ventilation hole 24a.
    [00062] As shown in FIG. 6, devices such as the external heat exchanger 13, the compressor 11, the accumulator 20, the oil separator 21 and the four-way valve 12 are mounted on an upper surface of the lower frame 26 of the main body of the external unit 5 The external heat exchanger 13 is of a type of transverse fin coil in which a heat transfer tube passes horizontally through a large number of aluminum fins and the heat exchange is carried out between the refrigerant fluid that flows through the heat transfer tube and the air that circulates in the external heat exchanger 13.
    [00063] The external heat exchanger 13 is folded in a substantially square shape to face (corresponding to) the four side surfaces, in a strip excluding a corner part (left front corner part) 5A of the main body of the external unit 5 along the four side surfaces. Specifically, the external heat exchanger 13 has a heat exchange front part 32 along the side surface of the front side of the main body of the external unit 5 (front surface), a right heat exchange part 33 along the side surface. on the right side, a rear heat exchange part 34 along the side surface of the rear side (rear surface), and a left heat exchange part 35 along the side surface of the left side. A part between the front heat exchange 32 and the right heat exchange part 33, a part between the right heat exchange part 33 and the back heat exchange 34, and a part between the back part of heat exchange 34 and the left heat exchange part 35 are folded substantially to 90 degrees. It should be noted that the heat exchange parts 32 to 35 of the external heat exchanger 13 do not necessarily point the side surfaces of the main body of the external unit 5 in parallel, but can face the side surfaces in an inclined state. In the present specification, the side surfaces of the main body of the external unit 5 can be regulated outwardly facing real side surfaces, for example, the upper panels of the side surface 25 described above, the lower panels of the side surface 29 to be described later , or frames in the form of a grid or cover panels of external side surfaces of the external heat exchanger 13. In a case where such panels of side surfaces 25 and 29, or similar are not provided, the side surfaces can be regulated by imaginary surfaces formed by the extension of the four sides of the lower structure 26 in a straight line upwards.
    [00064] As shown in FIG. 6, a part between a part of the left side end (part of the end of one side of the external heat exchanger 13) 32a of the front part of heat exchange 32 and a part of the end of the front side (part of the end of the other side of the external heat exchanger 13) 35a of the left heat exchange part 35 serves as an opening part 36. In the present embodiment, the opening part 36 is divided in two by the support pillar 27, arranged on the left front side . In the following description, a piece of the opening part 36 arranged on a front surface of the external unit 2 will be called a front opening part 36A, and a piece of the opening part 36 arranged on a surface on the left side will be called the opening part left 36B.
    [00065] In the main body of the external unit 5, the lower panels of the side surface 29 are respectively detachable provided between the part of the end of a side 32a and the support pillar 27, of the external heat exchanger 13, and between this pillar of support 27 and the end part on the other side 35a of the external heat exchanger 13 (see Figure 2). The front opening part 36A and the left opening portion 36B are respectively closed by the lower panels of the side surface 29. It should be noted that, although not shown, a grid-like structure or panel through which the air is circulated can be coupled to a part of the lateral surface of the main body of the external unit 5 where the external heat exchanger 13 is arranged.
    [00066] As shown in FIG. 6, the shut-off valves 18 and 19 are supported by a fixing base 37, in order to face the front opening part 36A of the main body of the external unit 5. The compressor 11 is arranged close to the right side of the part front opening 36A in a position such that substantially the entire compressor can be visually recognized from the front side through the front opening part 36A. The accumulator 20 and the oil separator 21 in the lower frame 26 are arranged on the rear side of the main body of the external unit 5.
    [00067] As shown in FIG. 4, a width W of the front opening part 36A formed between the electrical component unit 38 to be described later and the end part 32a on one side of the external heat exchanger 13 is defined to be of a size such that the compressor 11 can pass through it. When using this space to replace or similar to compressor 11, compressor 11 can be placed and removed.
    [00068] As shown in FIG. 4, the electrical component unit 38 includes electrical parts, such as a control panel 41 to control the entire external unit 2, drive plates (converter plates) 42 and 43 to drive compressor 11 and fan 23, one reactor 44 (see FIG. 7), a terminal base 45, and a box of electrical components 50 to accommodate these electrical parts. As shown in FIG. 3, the electrical component unit 38 is arranged corresponding to a part of the corner 5A on the main body of the external unit 5, that is, the corner part 5A of the main body of the external unit 5, where the external heat exchanger 13 does not is willing.
    [00069] The electrical component box 50 is provided in a strip from a part of the substantially upper end of the main body of the outdoor unit 5 to a part of the slightly lower side of an intermediate part in the up and down direction. Therefore, the electrical component box 50 is arranged so as to pass over the beam members 28a to 28d and an upper end of the external heat exchanger 13 in the up and down direction. The electrical component box 50 is arranged to pass through a lower end of the cylindrical ventilation guide 30a in the bell mouth 30 in the upward and downward direction.
    [00070] The electrical component box 50 of the electrical components unit 38 is connected and supported on the support pillar 27, arranged in the corner part 5A, the beam members 28a and 28b coupled to this support pillar 27, and the like by screws or the like. The electrical component box 50 includes an upper part 51, an intermediate part 52, and a lower part 53 whose flat shapes are different from each other. Parts 51, 52 and 53 are of substantially the same height.
    [00071] The upper part 51 of the electrical component box 50 is a piece arranged on the upper side of the beam elements 28a and 28b. FIG. 7 is a schematic cross-sectional view of the electrical component box corresponding to an arrow position VII-VII of FIG. 4. The flat shape of the upper part 51 of the electrical component box 50 is formed in a substantially trapezoidal shape. Specifically, the upper part 51 has a first front surface plate 51a substantially parallel to a front surface 5a of the main body of the external unit 5, a first rear surface plate 51b disposed behind and substantially parallel to the first front surface plate 51a, a first left-side surface plate 51c connecting left-hand parts of the first front surface plate 51a and the first rear surface plate 51b, the first left-side surface plate 51c disposed substantially parallel to a left-side surface 5b of the main body of the external unit 5, and a first right side surface plate 51d connecting parts of the right end of the first front surface plate 51a and the first rear surface plate 51b, the first right side surface plate 51d being arranged in such a way way that a rear side of it is tilted to left. Hereinafter, the rear angled portion of the first right side surface plate 51d will be called a right angled portion 51d1.
    [00072] In the upper part 51 of the electrical components box 50, the control panel (operation panel) 41 is disposed in the vicinity of the rear side of the first front surface plate 51a, and the reactor 44 is disposed in the vicinity of the front side of the first rear surface plate 51b. An operating window 51a1 is formed on the first front surface plate 51a. Operating parts, such as switches for making various adjustments to the outdoor unit, experimental operation and the like, an LED to be lit at the abnormal time and the like are provided on the control panel 41. The operating parts on the control panel 41 can be be operated and the LED or similar can be confirmed from this 51a1 operating window. By placing the control panel 41 in the upper part 51 of the electrical components box 50, the operation of the operation and confirmation parts of the LED or similar can be easily performed in an upright posture through the operation window 51a1. It should be noted that the operating window 51a1 is closed by a cover plate 51a2 capable of opening and closing. The first intake opening 56 for taking air into the electrical component box 50 is formed on the first rear surface plate 51b. Reactor 44 is a high heat generating part to be cooled, mainly downwards, by the air sucked in from the first intake opening 56.
    [00073] As shown in FIG. 5, the upper part 51 of the electrical component box 50 is arranged adjacent to the bell mouth 30. The bell mouth 30 includes the ventilation guide 30a, and an outer circumferential element 30b, horizontally arranged on the outer side of this guide. ventilation 30a and supported by beam elements 28a to 28d. The ventilation guide 30a is formed in a cylindrical shape so as to surround the entire circumference of the fan 23, whereas the outer circumferential element 30b is formed in a substantially square shape in a plan view, and a notch 30c is formed in a point of the electrical components box 50.
    [00074] As shown in FIG. 4, the intermediate part 52 of the electrical component box 50 is arranged on the lower side of the beam elements 28a and 28b. FIG. 8 is a schematic cross-sectional view of the electrical component box corresponding to an arrow position VIII-VIII in FIG. 4. The intermediate part 52 is made in a substantially square shape in a plan view. Specifically, the intermediate part 52 has a second front surface plate 52a substantially parallel to the front surface 5a of the main body of the external unit 5, a second rear surface plate 52b disposed behind the second front surface plate 52a, the second surface plate rear surface 52b being arranged in such a way that a part of the right side of it is tilted forward, a second surface plate left side 52c being arranged substantially parallel to the surface 5b on the left side of the main body of the external unit 5, and a second right-side surface plate 52d connecting parts of the right end of the second front surface plate 52a and the second rear surface plate 52b.
    [00075] It should be noted that from now on, the inclined part on the right side of the second plate of the rear surface 52b will be called the inclined rear part 52b1.
    [00076] The second front surface plate 52a is made of the same plate element as the first front surface plate 51a (see FIG. 7), and continued integrally on the underside of the first front surface plate 51a. The second left side surface plate 52c is made of the same plate element as the first left side surface plate 52c, and continued integrally to the bottom side of the first left side surface plate 51c. A surface portion of the second left side surface plate 52c expands slightly to the left. A discharge opening 57 for discharging air in the component box 50 is formed in this expansion part. In the intermediate part 52 of this electrical component box 50, the base of the terminal 45 is arranged in the vicinity of the rear of the second front surface plate 52a, and the drive plate 43 for the fan 23 is arranged on the front side of the second surface plate posterior 52b. In particular, a fan driver 43 including a switching element is provided on the drive plate 43. This fan driver 43 is air-cooled via a heat sink 43b projecting out of the sloping rear 52b1 of the second plate posterior surface 52b.
    [00077] As shown in FIG. 4, the lower part 53 of the electrical component box 50 is provided on the lower side of the intermediate part 52. FIG. 9 is a schematic cross-sectional view of the electrical component housing corresponding to an arrow position IX-IX in FIG. 4. The lower part 53 has a third rear surface plate 53b and a third right side surface plate 53d formed by extending the second rear surface plate 52b and the second right side surface 52d described above in a straight line. low. The lower part 53 of the electrical component box 50 also has a third front surface plate 53a arranged in such a way that a part on the right side thereof is substantially adjacent to the front surface 5a of the main body of the external unit 5 and a part on the side left side is tilted back. Hereinafter, the inclined portion of the rear of the third front surface plate 53a will be called an inclined frontal portion 53a1. This front angled part 53a1 is arranged substantially parallel to the right angled part 51d1 shown in FIG. 7.
    [00078] Within the lower part 53 of the electrical component box 50, the drive plate 42 of the compressor 11 is arranged in the vicinity of the front side of the front inclined part 53a1 on the third front surface plate 53a. A cooling jacket 48 is provided on a surface of the front sloping part 53a1, and a cooling fluid tube 47 brought from the cooling fluid tube of the cooling fluid circuit 10 (see FIG. 1) is in contact with this jacket cooling unit 48. A power module having a power element (switching element) as an IGBT (bipolar integrated transistor) serving as a high heat generation part is mounted on the drive plate 42 of the compressor 11. This module The supply pipe is cooled by the refrigerant flowing through the coolant pipe for cooling 47. A second inlet opening 58 for the air intake into the electrical component box 50 is formed in a bottom wall of the lower part 53 of the box of electrical components 50.
    [00079] FIG. 10 is a perspective view in which the electrical component box is viewed obliquely from the rear side from above. At the boundary between the upper part 51 and the intermediate part 52, on the back side of the electrical component box 50, a recess-shaped slot 60 is formed substantially parallel to the inclined right part 51d1 of the first surface plate of the right side 51d and the first rear surface plate 51b. Meanwhile, as shown in FIG. 11, a portion of the left end of the beam element 28a disposed at the front of the main body of the external unit 5 is recessed to the rear. Specifically, an angled part 28a1 backwards following a shape of the slot 60, and a parallel part 28a2 substantially extends parallel to the front surface 5a of the main body of the external unit 5 from a part of the left end of the inclined part 28a1 are formed at the left end part of the beam element 28a.
    [00080] When the electrical component box 50 is connected to the main body of the external unit 5, the inclined part 28a1 of the beam element 28a is inserted obliquely in the left rear as shown by an arrow while being mounted in the groove 60. Thus, the inclined portion 28a1 acts as a guide rail for guiding the electrical component box 50 to a predetermined fixing point. By providing such an inclined part (part of the guide rail) 28a1, the electrical component box 50 can be easily and quickly positioned at a suitable point.
    [00081] When supplying the inclined part (part of the guide rail) 28a1 to the beam element 28a, the electrical component box 50 can be fixed without touching the cooling fluid tube for cooling 47 (see FIG. 9). When connecting the electrical component box 50 to the main body of the external unit 5, the refrigerant tube including the coolant tube for cooling 47 is already mounted on the main body of the external unit 5. Thus, there is a need for connect the electrical components box 50 without touching it including the coolant tube 47 for cooling. In the present embodiment, since the coolant tube 47 for cooling is provided on the sloping front 53a1 at the bottom 53 of the coolant box electrical components 50, the electrical components box 50 cannot be connected straight back from a front surface of the main body of the external unit 5. For this reason, the part of the guide rail 28a1 disposed substantially parallel to the inclined part front 53a1 in which this coolant tube 47 is installed is formed in the beam element 28a, and the component box electrical testers 50 is connected along this part of the guide rail 28a1. For this reason, the electrical component box 50 is prevented from touching the coolant pipe for cooling 47.
    [00082] The cooling fluid tube for cooling 47 is arranged on a flat strip of the electrical component box 50 in a plan view. That is, in the lower part 53 of the electrical component box 50, the surface of the front inclined part 53a1 of the third front surface plate 53a is regressed from the first and second front surface plate 51a and 52a. In this way, a recess part (part of the recess arrangement) 54 in a mode where the bottom wall is recessed upwards is formed in the electrical component box 50. The cooling fluid tube for cooling 47 is not designed for the sides of the electrical component box 50, so that a flat arrangement space of the electrical component box 50 including the coolant tube 47 can be reduced as far as possible.
    [00083] As shown in FIG. 4, an electrical wire 62 in the electrical component box 50 is pulled out and down from a bottom wall (bottom wall of the intermediate part 52) 54a of the electrical component box 50 in the recess part 54. Therefore , the electrical wire 62 can be pulled outwards, without passing through the lower part 53 of the electrical component box 50 in which the drive plate 42 of the compressor 11 is accommodated, so that the influence on the electrical wire 62 of noise generated from the drive plate 42 can be reduced.
    [00084] FIG. 12 is an illustrative view showing an air flow in the electrical component box.
    [00085] When the fan 23 is activated, the outside air is sucked in from the side surfaces of the main body of the external unit 5. After the heat exchange is done with the external heat exchanger 13, the air is blown out and to up. At this moment, inside the main body of the external unit 5 the pressure becomes a negative pressure due to the action of the fan 23. In particular, since one of the part B shown in FIG. 12 is closer to fan 23 than part A, the pressure is lower. Outside the main body of the external unit 5 and a part C on the outside of the ventilation guide 30a of the bell mouth 30, the pressure becomes a positive pressure or atmospheric pressure.
    [00086] As described above, the first intake opening 56 is formed on the side surface of the upper part 51 of the electrical component box 50, the second intake opening 58 is formed on the bottom surface of the lower part 53, and the opening discharge 57 is formed on the side surface of intermediate part 52. By the differential pressure between part C and part B, as described above, air is drawn into the electrical component box 50 from the first intake opening 56 and discharged from the discharge opening 57. By means of this air flow, the devices on the upper side of the electrical component box 50 are cooled. By differential pressure between part A and part B, air is drawn into the electrical component box 50 from the second inlet opening and discharged from the outlet opening 57. Through this air flow, the devices in the the bottom side of the electrical component box 50 are cooled.
    [00087] The differential pressure between part A and part B is less than the differential pressure between part C and part B. Thus, the air flow from the second inlet to the discharge opening 57 is weaker than the air flow from the first intake opening 56 to the discharge opening 57. However, due to the relatively strong air flow from the first intake opening 56 to the discharge opening 57, an air flow from the first intake opening 56 to the discharge opening 57, is caused, and air flow from the second intake opening 58 is facilitated. By this action, a heat release property of the electrical component box 50 can be further improved.
    [00088] In the above embodiment, the external heat exchanger 13 is arranged so as to face the four lateral surfaces of the main body of the external unit 5 (see FIG. 6). Therefore, in comparison with a case where the external heat exchanger 13 is arranged, in order to face three lateral surfaces of the main body of the external unit 5, an area of air circulation can be extended, so that a capacity heat exchange can be increased. In other words, since the external heat exchanger 13 is arranged to face the four side surfaces of the main body of the external unit 5, the air circulation area can be maintained, even with the small size of the main body of the unit external 5. Therefore, the main body of the external unit 5 can be reduced in size without decreasing the capacity of the external heat exchanger 13.
    [00089] However, when the external heat exchanger 13 is disposed on the four side surfaces of the main body of the external unit 5, the opening part 36 formed between the end part of one of the sides 32a and the end part 35a of the the other side of the external heat exchanger 13 is reduced, and a proportion of the accommodation space of the electrical component box 50 in this opening part 36 is relatively increased. Therefore, in a case where work such as maintenance and replacement of devices on the main body of the external unit 5 is carried out using the remaining space of the opening part 36, there is a possibility that the workability will be impaired.
    [00090] In relation to this point, inside the external unit 2 of the present modality, the electrical components box 50 is arranged so that it crosses a lower end (denoted by a reference sign H in FIG. 12) of the ventilation guide 30a in the up and down direction. Thus, in comparison with a case where the entire electrical component box 50 is arranged on the lower side of the lower end H of the ventilation guide 30a, the space of disposal of the electrical component box 50 in the opening part 36 can be reduced. Therefore, the remaining space of the opening part 36, excluding the accommodation space of the electrical components box 50 can be ensured as widely as possible, so that work, such as the maintenance of the devices on the main body of the external unit 5 it can be easily accomplished by using the opening part 36.
    [00091] A region on the upper side of the lower end H of the ventilation guide 30a and on the horizontal outer side of the ventilation guide 30a contributes only to the air flow in the main body of the outdoor unit 5. Therefore, even when the electrical component box 50 is arranged in this region, the air flow in the main body of the external unit 5 is hardly negatively influenced and the heat exchange efficiency is not impaired.
    [00092] As shown in FIG. 3 and FIG. 4, the electrical component unit 38 is arranged in the left front corner part 5A on the main body of the external unit 5. Meanwhile, as shown in FIG. 5, the fan 23 is arranged to be moved to other corner parts where the electrical component unit 38 is not arranged, specifically for the front right and rear right parts of the main body of the external unit 5. For therefore, a relatively large space for arranging the electrical component unit 38 can be formed on the left front side of the main body of the external unit 5. As shown in FIG. 5 and FIG. 6, in the external heat exchanger 13, the air circulation area is larger on the left side of the main body of the external unit 5 than on the right side, while the fan 23 is arranged to be moved to the right side of the main body of the external unit 5. Therefore, air can be drawn more from the right side of the main body of the external unit 5, so that the heat exchange can be more efficiently carried out by the external heat exchanger 13.
    [00093] The present invention is not limited to the above modality, but can be changed accordingly within the scope of the invention described in the claims.
    [00094] For example, the present invention can be applied to an external unit 2 including an external heat exchanger 13 arranged in a U shape next to three lateral surfaces of a main body of the external unit 5. However, more effectively, the present The invention applies to the external unit 2 in which the external heat exchanger 13 is arranged so as to face the four lateral surfaces of the main body of the external unit 5 as in the above embodiment.
    [00095] Although the external unit 2 of the above modality includes a compressor 11, two or more compressors 11 can be supplied. Even in this case, the width of the opening W of the front opening part 36A is such that a compressor 11 can be placed and removed, so that a plurality of compressors 11 can be placed and removed from the front opening part 36A in the order of one by one. LIST OF REFERENCE SIGNALS 1: AIR CONDITIONER 2: EXTERNAL UNIT 5: MAIN BODY OF EXTERNAL UNIT 11: COMPRESSOR 13: EXTERNAL HEAT EXCHANGER 23: FAN 28a: BEAM ELEMENT (COUPLING ELEMENT) 28a1: INCLINED PART (PART OF THE GUIDE RAIL) 30: BELL MOUTH 30a: VENTILATION GUIDE (VENTILATION ELEMENT) 32a: PART OF THE END OF ONE SIDE OF THE HEAT EXCHANGER 35a: PART OF THE END OF THE OTHER SIDE OF THE HEAT EXCHANGER 38: UNIT OF ELECTRICAL COMPONENTS 42: ACTIVATION PLATE (HIGH GENERATION PART OF HEAT) 50: ELECTRIC COMPONENTS BOX 54: PART OF THE DEVICE 54a: BACKGROUND WALL 56: FIRST INTAKE OPENING 57: DISCHARGE OPENING 58: SECOND ADMISSION OPENING
    权利要求:
    Claims (10)
    [0001]
    1. External unit for an air conditioning unit, comprising: a main body of the external unit (5); a heat exchanger (13) accommodated in the main body of an external unit (5); a fan (23) provided in an upper part of the main body of the external unit (5), the fan blowing out the air drawn from the lateral surfaces of the main body of the external unit (5); a ventilation element (30a) around an outer circumference of the fan (23) and the formation of an air blowing opening; and an electrical component unit (38) accommodated in the main body of the external unit (5) and arranged in an opening part (36) between an end part on one side (32a) and the end part on the other side (35a ) of a heat exchanger (13); wherein the electrical component unit (38) is provided to pass through a lower end of the ventilation element (30a) in the up and down direction, and a part of the electrical component unit arranged on the upper side of the lower end of the ventilation element (30a) is arranged on the outer side horizontally of the ventilation element (30a), and characterized by the fact that the electrical component unit (38) includes an electrical component box (50) to accommodate an electrical component , and in the electrical components box (50), a first inlet opening (56) for taking air into the electrical components box (50) is formed on the upper side of the lower end of the ventilation element ( 30a), and a discharge opening (57) for discharging air in the electrical component box (50) is formed on the lower side of the lower end of the ventilation element (30a).
    [0002]
    2. External unit for the air conditioning unit, according to claim 1, characterized by the fact that the main body of the external unit (5) is made in a square format in a plan view, and the heat exchanger ( 13) is provided in order to face the four side surfaces of the main body of the external unit (5).
    [0003]
    3. External unit for the air conditioning unit, according to claim 2, characterized by the fact that the heat exchanger (13) is provided in order to face the four side surfaces in a strip excluding a corner part (5A ) of the main body of the external unit (5), and 1. electrical component unit (38) is arranged in the corner part (5A).
    [0004]
    4. External unit for the air conditioning unit, according to claim 3, characterized by the fact that the fan (23) is arranged in such a way that the center of it is displaced to the side of other parts of the corners of the body head of the outdoor unit (5) on a flat strip of the main body of the outdoor unit (5).
    [0005]
    5. External unit for the air conditioning unit according to any one of claims 1 to 4, characterized by the fact that a space with which the compressor (11) is placed and removed is formed between the unit of the electrical component ( 38) and the side end portion (32a) of the heat exchanger (13).
    [0006]
    6. External unit for the air conditioning unit according to any one of claims 1 to 5, characterized by the fact that the unit of the electrical component (38) is supported by a beam element (28a) arranged in the horizontal direction corresponding to one of the side surfaces of the main body of the external unit (5), and the beam element (28a) has a guide rail part (28a1) for, when fixing the electrical component unit to a predetermined fixing point of the body main of the external unit (5), guiding the electrical component unit (38) to the fixing point.
    [0007]
    7. External unit for the air conditioning unit according to any one of claims 1 to 6, characterized by the fact that a second intake opening (58) for the intake of air into the electrical components box (50) it is formed on the underside of the discharge opening (57) in a lower part of the electrical component box (50).
    [0008]
    8. External unit for the air conditioning unit, according to claim 7, characterized by the fact that a part of high heat generation is arranged in the lower part of the electrical components box (50).
    [0009]
    9. External unit for the air conditioning unit according to claim 8, characterized by the fact that a part of the recess arrangement (54) for arranging a tube of cooling refrigerant to cool the part of high heat generation in the flat strip of the electrical component box (50) is formed at the bottom of the electrical component box (50).
    [0010]
    10. The external unit for the air conditioning unit according to claim 9, characterized by the fact that the part of the recess arrangement (54) is formed by embedding a part of a bottom wall of the electrical components box (50 ) upwards, and an electrical wire (62) in the electrical component box (50) is pulled outwardly from a bottom wall (54a) in the part of the recess arrangement (54).
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-02| B09A| Decision: intention to grant|
    2021-04-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/09/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011-215047|2011-09-29|
    JP2011215047A|JP5304865B2|2011-09-29|2011-09-29|Air conditioner outdoor unit|
    PCT/JP2012/075021|WO2013047721A1|2011-09-29|2012-09-28|Outdoor unit for air conditioning device|
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