• 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:
    WASHING MACHINE. A washing machine having a heat exchanger cleaning device may include a cabinet, a drum provided in the cabinet, a heat exchanger for heating dry air in the drum, air tubes for circulating the air between the heat exchanger and the drum and a control valve that controls a flow of water to the heat exchanger to clean lint deposits on the heat exchanger. An area of the heat exchanger can be divided into a plurality of regions, such that a first nozzle is coupled to the first outlet port and provided above a first region of the plurality of regions and a second nozzle is coupled to the second outlet port. exit and provided above a second region of the plurality of regions. The control valve can selectively direct the water flow towards the first nozzle or the second nozzle to clean the desired region.
    公开号:BR112013024603B1
    申请号:R112013024603-0
    申请日:2012-03-27
    公开日:2020-12-01
    发明作者:JunSeok Lee；Kiwook Jung；Seonil Heo；Taekyu Shin
    申请人:Lg Electronics Inc.；
    IPC主号:
    专利说明:

    Technical Field
    The present disclosure relates to a clothing treatment apparatus having a heat exchanger cleaning device, and particularly to a clothing treatment apparatus having a lint-removing device that forms on the surface of an evaporator. Basis of the Technique
    A drying device with a drying function removes moisture by supplying hot air inside a drum while an object to be dried is placed inside the rotating drum. The dry air supplied to the drum is generated by applying electrical resistance heat or heat produced by burning fuel, such as gas to the air being supplied to the drum. However, for the purpose of reducing energy consumption, heat pumps can be used to generate hot air.
    Specifically, hot temperature air exhausted from a drum is cooled and condensed through heat exchange with an evaporator, and air being supplied to the drum is subjected to heat exchange with a condenser, thereby generating hot air. When using these heat pumps, the heat discharged during exhaust or condensation can be reintroduced to generate hot air to reduce energy consumption.
    However, as described above, once the air passing through the evaporator makes contact with the object to be dried, that is, with the clothes, and is then exhausted, the air contains a bundle of lint separated from the surface of the clothes in the process. drying. In order to remove lint, a lint removal filter is installed before the hot air in the exhaust passage flows to the evaporator, thereby preventing the lint from being exhausted to the outside or flowing to the evaporator to some extent. . Disclosure of the Invention Technical problem
    In order to improve lint removal, the entanglement of the lint removal filter needs to be reduced. However, this can increase the resistance of the passage, reducing the efficiency of exhaustion and, therefore, the reduction in the size of the tangle is limited. As a result, some of the lint passes through the lint removal filter and flows into the evaporator. The lint flowing into the evaporator is then attached to the evaporator surface to reduce heat exchange efficiency and increase flow resistance.
    To solve this problem, several attempts have been made to remove lint that forms on the surface of the evaporator. In one example, the apparatus for treating clothes was disclosed, which removes lint by spraying condensation water generated through condensation when using the evaporator on the evaporator surface. However, condensation water is not always sufficiently supplied. Therefore, lint removal is impossible when the amount of available condensation water is small. Even when the amount of condensation is sufficient, a high-capacity pump is necessary to uniformly spray condensation water, sprayed through nozzles, on the surface of the evaporator.
    That is, the increase in pump capacity leads to an increase in energy consumption and an increase in its own volume, limiting installations. Solution to the Problem
    Therefore, an aspect of the detailed description is to provide a clothing treatment apparatus having a heat exchanger cleaning device, which can remove lint that forms on a surface of a heat exchanger, even when water condensation is insufficient.
    One aspect of the present disclosure also provides a clothing treatment apparatus having a heat exchanger cleaning device, which can remove lint across the entire heat exchanger while using a small capacity pump.
    To achieve this and other advantages and in accordance with the purpose of that specification, as embodied and widely described in this document, in accordance with an aspect of the present disclosure, an apparatus for treating clothing is provided including: a cabinet; a drum provided inside the cabinet; a heat exchanger, which exchanges heat with exhaust air from the drum; a plurality of spray nozzles, spraying water on the surface of the heat exchanger and spaced apart; a control valve, opening or closing the plurality of spray nozzles; and a controller, controlling a control valve operation and causing water to be sequentially sprayed through the plurality of spray nozzles.
    In that aspect of the present invention, a spray nozzle does not clean the entire area of the heat exchanger, however the heat exchanger is cleaned when using the plurality of spray nozzles. That is, considering that the surface of the heat exchanger does not always need to be cleaned in a given time, when there is a small amount of condensation water, a part of the heat exchanger is cleaned first considering the remaining amount of condensation water, and another part of the condensation exchanger is cleaned after a sufficient amount of condensation water is collected, such that cleaning can be carried out even when the remaining amount of condensation water is not sufficient.
    In addition, even when the remaining condensation water is sufficient, since condensation water is sprayed onto the surface of the heat exchanger, compared when the entire surface of the heat exchanger is cleaned at a time, a smaller capacity pump can be used.
    Here, the water can be condensation water generated by the heat exchanger. In some cases, water may be provided by an external supply, such as a water supply.
    However, a condensation water collection portion can be provided to a bottom surface of the heat exchanger to collect the condensation water, and a pump can be additionally provided to supply the collected condensation water to the water collection portion of the condenser. condensation to the control valve.
    In addition, the condensation water storage portion disposed adjacent to the condensation water collection portion and which temporarily stores the condensation water collected in the condensation water collection portion can be provided on a base located at the bottom of the cabinet , and the pump can be installed in the condensation water storage portion.
    The garment treatment apparatus may additionally include water pipes connecting the control valve to the spray nozzles. The control valve can include water supply ports connected to the water pipes; and a drain port connected to a drain pipe includes the condensation water stored in the condensation water storage portion.
    Here, the drain piping can extend from the outside of the cabinet and can drain unnecessary condensation water out.
    However, when there is no drainage system in a place where the garment treatment apparatus is installed, a condensation water reservoir can be additionally provided in the cabinet to store the condensation water, and the drain pipe can communicate with the condensation water tank. Therefore, an adequate amount of condensation water can remain in the condensation water storage portion. The condensation water storage in the condensation tank can be emptied by a user.
    That aspect of the present disclosure may be applicable to an arbitrary clothing treatment apparatus having a heat exchanger condensing exhausted water from a drum. In one example, a heat pump including a compressor, a condenser, an expander and an evaporator can be provided on a bottom surface of the cabinet, and the heat exchanger can correspond to the evaporator.
    In addition, a garment treatment apparatus can be divided into an extractor-type garment treatment apparatus, in which hot air exhausted from a drum is discharged out of an enclosure, and into a garment-treatment apparatus circulation, in which hot air is condensed, reheated and replenished to a drum. The present disclosure can be applied to both the exhaust type and the circulation type.
    Both the appliance for the treatment of clothes of the exhaust type and the circulation type include exhaust passages. The evaporator can be provided on a base arranged at the bottom of the cabinet, and a cover plate covering the evaporator and the condenser can be provided to form an exhaust passage along with the base. The condenser can be provided downstream from the evaporator. Air can be reheated by the condenser and refilled to the drum.
    Here, the spray nozzles can be attached to the cover plate.
    According to another aspect of the present disclosure, an apparatus for treating clothes is provided including a heat exchanger condensing exhausted air from a drum; a plurality of spray nozzles spraying water on a surface of the heat exchanger; and a control valve sequentially supplying water to the plurality of spray nozzles, wherein the water is sequentially sprayed on an entire surface of the heat exchanger.
    According to another aspect of the present disclosure, a cleaning nozzle is provided by spraying a fluid on a surface of a heat exchanger, the cleaning nozzle including: a spray pipe, through which a fluid to be sprayed is provided; and a diffuser having an inlet, to which the fluid sprinkled from the sprinkler pipe flows, and an outlet, from which the fluid is sprinkled, in which the outlet is wider than the inlet, in which part of the sprinkler piping is inserted into the inlet.
    According to another aspect of the present disclosure, a cleaning nozzle is provided by spraying a fluid on a surface of a heat exchanger, the cleaning nozzle including: a plurality of inlet ports, through which a fluid to be sprayed is provided ; a plurality of spray chambers, into which the fluid supplied through the inlet ports flows; and a plurality of spray slits, respectively formed in the plurality of spray chambers, wherein each of the spray slits is longer than the heat exchanger. Advantageous Effects of the Invention
    According to aspects of the present invention, even when the remaining condensing water is not sufficient, the heat exchanger can be cleaned in part, resulting in the prevention of the reduction in air flow caused by the passage resistance. Deterioration in the heat release performance of an evaporator from a device for treating circulation-type garments, in which the air continuously recirculates, can affect the drying performance and make a heat pump system unstable. Therefore, the evaporator surface needs to be clean at all times. In the aspects of the present disclosure, as compared to the related technique, the heat exchanger can be cleaned more frequently, thereby maximizing utility.
    In addition, since a small capacity pump can be used, manufacturing costs can be reduced and space utilization can be maximized.
    Additional scope of applicability of this application will become more apparent from the detailed description given below. However, it should be understood that the detailed description and the specific examples, insofar as they indicate preferential modalities of the present disclosure, are given by way of illustration only, since several changes and modifications within the spirit and scope of this disclosure are will make it more apparent to those skilled in the art from the detailed description. Brief Description of the Figures
    Figure 1 is a perspective view of a clothing treatment apparatus having a heat exchanger cleaning device according to an exemplary embodiment of the present disclosure;
    Figure 2 is a sectional view schematically illustrating the internal structure of the clothing treatment apparatus of Figure 1;
    Figure 3A is a plan view of a base of the clothing treatment apparatus of Figure 1;
    Figure 38 is a plan view of a base of the apparatus for treating clothes of Figure 1 without a cover plate;
    Figure 4 is a partial sectional view of the base of Figure 3;
    Figure 5 is an enlarged partial plan view of the base of Figure 3;
    Figure 6 is a partial transitional view of the base of Figure 3;
    Figure 7 is an enlarged partial plan view of another example of the base of Figure 3;
    Figure 8 is a perspective view of a control valve;
    Figure 9 is an exploded perspective view of the control valve of Figure 8;
    Figure 10 is a perspective view of a spray pipe;
    Figure 11 is a partial sectional view showing a sprinkler pipe installed in Figure 10;
    Figure 12 is a partial perspective view of a water reservoir;
    Figure 13 is a plan view of a base of an apparatus for treating clothes having a heat exchanger cleaning device according to another exemplary embodiment of the present disclosure;
    Figure 14 is a perspective view of a spray nozzle;
    Figure 15 is a plan view of an upper member of the spray nozzle of Figure 14;
    Figure 16 is a plan view of a lower member of the spray nozzle of Figure 14; and
    Figure 17 is a cross-sectional view illustrating an internal structure of the spray nozzle of Figure 14. Mode for the Invention
    A detailed description of the exemplary modalities of a clothing treatment apparatus in accordance with the present disclosure will now be given, with reference to the attached figures. For the purpose of a brief description with reference to the figures, the same components or equivalent components will be provided with the same reference numbers, and their description will not be repeated.
    Figure 1 is a perspective view illustrating a washing machine having a heat exchanger cleaning device according to an embodiment of the present disclosure. Figure 2 is an internal structural view schematically illustrating the internal structure of washing machine 1 of Figure 1. Here, washing machine 1 of Figure 1 is a dryer, however the present disclosure is not limited to it. The present disclosure is applicable to any type of washing machine 1 or appliance for treating clothes with a drying function, which dries clothes positioned on a drum by supplying hot air, as well as a washing machine having a dryer or dryer vertical individual.
    With reference to Figures 1 and 2, the washing machine 1 according to the embodiment shown in Figure 1 includes a cabinet 100, which can have a substantially rectangular parallelepiped shape. Cabinet 100 may have a top plate 102 on a top surface of that and a control panel 104 on top of a front surface of that, which controls various functions of the dryer and which can exhibit an operating state. An opening 106 can be formed on the front surface of cabinet 100 so that items to be dried (e.g., clothing) are placed through opening 106. A door 108 can be installed adjacent to opening 106 to open or close opening 106.
    A drum 110 is installed rotatably inside the cabinet 100, in such a way that the clothing is placed inside the drum 110. Additionally, a lint filter 112, through which air exhausted from the drum 110 can flow, can be formed around from the bottom of the front surface of the drum 110. The lint filter 112 may include filter material (for example, entanglement), which filters out lint from the air flow, as well as forming a portion of the flow path through which the hot air circulates.
    A circulation flow path 116 can be provided downstream of the lint filter 112, and a heat pump 120 can be installed within circulation flow path 116. Specifically, the heat pump 120 can include an evaporator 121, a expander 122, a compressor 123 and a condenser 124. Evaporator 121 and condenser 124 can be installed in the flow path 116, while the expander 122 and compressor 123 can be arranged outside the flow path 116. Therefore , since the air flowing from the lint filter 112 passes through the circulation flow path 116, the air can flow sequentially through the evaporator 121 and through the condenser 124, in such a way that cooling (condensation) and reheating are carried out .
    During the cooling process described above, moisture in the hot air can be condensed to form condensed water droplets on the evaporator surface or drip from the evaporator 121 for collection. The condensation water generated in this way can be collected first in a condensed water collection portion located below the evaporator 122. The condensation water collection portion will be described below.
    A return duct 114 can be formed downstream of the flow path 116. The return duct 114 is connected in such a way that hot air flowing from the flow path 116 can be reinforced to the drum 110. Additionally , an auxiliary heater 118 can be installed inside the return duct 114 to reheat the hot air that is first heated by condenser 124. The auxiliary heater 118 can be used to prevent a reduction in the temperature of the hot air during an initial stage of the operation of the heat pump 120, during which the heat pump may not provide a sufficient amount of heat. The auxiliary heater can also be used to shorten the drying time, providing an additional amount of heat to supplement the heat generated by the heat pump 120.
    As shown in Figures 1 and 2, the washing machine 1 according to the modality shown in Figure 1 can be a “circulation type” dryer, in which hot air exhausted from the drum is cooled, reheated and then flows again to inside the drum. However, the present disclosure is not limited to the “circulation type” dryer, but is applicable to a “exhaust type” dryer, in which the hot air exhausted from the lint filter 112 passes through the evaporator 121 alone, is cooled and condensed and then exhausted out of cabinet 100 without passing through condenser 124.
    Figure 3A is a plan view of a washing machine base 1 in Figure 1. Figure 3B is a schematic view of the base in Figure 3A. Figure 4 is a partial sectional view of the base of Figure 3A. Referring to Figures 3A and 4, a base 130 is provided on a bottom surface of cabinet 100. Base 130 can form a portion of the flow path 116 (tube) and can provide a space in which the heat pump 120 can be supported stably. Specifically, the flow path 116 in which evaporator 121 and condenser 124 are installed can be provided on the left side of the base and expander 122 and compressor 123 can be provided on the right side of the base, as shown in Figure 3 .
    Referring to Figure 3B, air can be circulated through the heat exchanger through the circulation flow path 116, as illustrated by the dashed lines. For example, air can flow from the lint filter 112 through the circulation flow path guide unit 131, then through the front surface of the evaporator 121. Moisture can be condensed from the air on the front surface of the evaporator 121 and collected in the condensation water collection portion 132. Air can then flow through evaporator 121 and condenser 124, as indicated by an arrow A. Flow path 16 can be surrounded by partitions or walls to form tubes . The air can then be reintroduced into the drum via the return pipe connection unit 133.
    The lint filter 112 can be provided in a front part (bottom in Figure 3) of the cabinet 100, and the flow flow guide unit 131, which communicates with the lint filter 112, can be provided. The flow path guide unit 131 communicates with the lint filter 112 and guides the exhausted hot air from drum 110 to evaporator 121. For this purpose, a plurality of guide shafts 131a can be formed in the guide unit circulation flow path 131 to guide air to the evaporator 121.
    Hot air guided by the guide shafts 131a flows into the circulation flow path 116. Circulation flow path 116 can be defined by a cover plate 140 that covers a top portion of a space formed by the bottom surface of the base 130 and the partition (not shown) formed at base 130. That is, the circulation flow path 116 can be a tube that is formed by cover plate 140 and the partition of base 130. The air that passes through the path circulation flow 116 passes through evaporator 121 and through condenser 124 and flows into return duct 114 through a return duct connection unit 133, which is formed on a rear surface of the base 130.
    The bottom surface of the base 130 on which the evaporator 121 and condenser 124 are arranged can serve as a collection portion of condensation water 132. That is, the condensation water generated through condensation by the evaporator 121 is first collected in the portion condensation water collection 132. The collected condensation water can flow into a condensation water storage portion 134, which is disposed adjacent to compressor 123. The condensation water collection portion 132 and the condensation portion Condensing water storage 134 can be separated from one another through a partition and can communicate with each other through holes in the partition.
    Therefore, when a level of condensation water collected in the condensation water collection portion 132 becomes greater than a predetermined level, the condensation water can flow into the condensation water storage portion 134 through the holes and can stay stored there. The condensation water stored in the condensation water storage portion 134 can be supplied to a control valve 160 that is installed on top of the cover plate 140 using a pump 150. Pump 150 can be provided in the portion of condensation water storage 134, as described in more detail below.
    Referring to Figure 3B, arrow B indicates a movement path of condensation water on the bottom surface of the body. That is, condensation water collected in the condensation water collection portion 132 below the evaporator and the condenser moves in the direction indicated by arrow B, to thus move the condensation water storage portion 134 formed to be lower. than the condensing water collection portion 132. A pump mounting portion 135 for mounting the pump 150 is formed in the condensing water storage portion 134.
    Figure 5 is a plan view showing the collection portion of condensation water and a reservoir in a state where all of the equipment in Figure 3B has been removed. The arrow in Figure 5 indicates a movement path of condensation water. The condensation water storage portion 134 and the condensation water collection portion 132 are divided among themselves by a wall body. Condensation water can be introduced into the reservoir through a reservoir inlet 136 of the wall body and move to the pump mounting portion.
    As mentioned earlier, the pump mounting portion 135 of the condensing water storage portion 134 is formed to be smaller than the condensing water storage portion 134. Referring to Figures 5 and 6, the mounting portion of pump 135 and condensation water storage portion 134 are formed in a ladder shape.
    The pump 150 includes a housing 152 and an impeller 151 provided in a lower part of the housing and which transfers water. A motor 153 for rotating the impeller is provided in the housing and transfers a rotational force. Under this configuration, condensation water introduced through an impeller side entrance 154 of the housing is pressed by the impeller. The condensation water pressed upwards moves and moves along a path provided in the box.
    Referring to Figure 6, the side impeller inlet of the housing is positioned close to the bottom surface of the pump mounting portion 135, such that the lower end of the impeller is located in a lower position than the storage portion. condensation water 134. Under this configuration, the condensation water introduced can be slowly introduced into the pump and the amount of condensation water, which remains in the reservoir, can be minimized.
    The pump mounting portion 135 has an inclined surface 137 inclined with respect to the condensing water storage portion 134. Due to the inclined surface 137, the condensation water introduced in the reservoir 112 can move slowly towards the mounting portion of pump 135.
    Figure 7 illustrates an example of modification of the pump mounting portion 135. Referring to Figure 7, the pump mounting portion 135 'is formed to have a shape of the bottom surface of a pump housing. That is, part of the reservoir is concave in correspondence to the shape of the bottom surface of the pump housing. More specifically, the pump mounting portion 135 'of Figure 6 has a shape that protrudes from a circle.
    In general, the pump is formed to have a circular shape. Therefore, the pump is not arranged in the protruding portion and, thus, a greater amount of condensation water is collected in the protruding portion of the pump mounting portion 135 ', greater than other parts. As a result, a sufficient amount of water can be supplied to the impeller. A foreign material removal portion 132a is formed in the condensation water collection portion 132. The foreign material removal portion 132a includes a plurality of ribs that project upwardly from the bottom surface of the water collection portion condensation.
    More specifically, the ribs are formed in a wedge shape, such that a lateral sectional surface upstream of a condensation water path is smaller than a lateral sectional surface downstream. Under this configuration, condensation water can pass through the space between the ribs, considering that foreign materials having a large size, which can influence the pump etc., cannot pass through them.
    Referring to Figure 7, the foreign material removal portion 132a is arranged in two columns. At least two columns of the ribs are arranged so that they cross each other. This can allow foreign materials to be removed more efficiently.
    With reference to Figures 8 and 9, the condensation water that is supplied through a water pipe 180, which is connected between a discharge port of the pump 150 and an inlet port 161 of the control valve 160, is connected to a plurality of water supply ports 162, 163 and 164 and a drain port 169, which are provided in the control valve 160. Inlet port 161 can be provided in a valve box 165 which has a control disc 167 inside it. The water supply ports 162, 163 and 164 and the drain port 169 can be provided in a portion of port 168 that is connected to valve box 165. Control disc 167 can be rotatably mounted by an engine 166, the which is provided at one end of the valve box 165 and may include a cutting portion 167a.
    In addition, water supply ports 162, 163 and 164 and drain port 169 can be arranged radially at predetermined intervals, for example, at 90 ° intervals, over port portion 168. Therefore, a water path of Condensation supplied through the inlet port 161 can be determined according to the position of the cutting portion 167a. As shown in Figure 9, the condensation water can be drained through the water supply port 162. The position of the cutting portion 167a can be controlled by a controller.
    The condensation water that passes through the control valve 160 can pass through three water pipes 181, 182 and 183 and supplied to an injection pipe 170. Referring to Figures 10 and 11, the injection pipe 170 can have a sloping central portion and may include a coupling unit 171 (mounting bracket) integrally formed to extend along both sides. Coupling unit 171 can be formed within a flat panel that extends in one direction and has coupling holes 171a (mounting holes) formed at both ends, such that coupling unit 171 and plate cover 140 can be joined when using pins. Coupling unit 171 can be configured in such a way that a position of the injection piping 170 can be adjusted in relation to the front surface of the evaporator 121.
    A discharge opening 172 of the injection tubing 170 can be positioned through the cover sheet 140 to protrude below the bottom surface of the cover sheet 140. Additionally, diffusers 142 can be positioned on the bottom surface of the cover sheet 140 to form a path for the condensed water discharged from the discharge opening 172 of the injection pipe 170.
    Here, as shown in Figures 10 and 11, diffuser 142 can be formed integrally with cover sheet 140. Alternatively, diffuser 142 can be formed as a separate component that is attached to the bottom surface of cover sheet 140. One diffuser 142 can be provided for each of the injection pipes 170 corresponding to each of the water pipes 181, 182 and 183.
    A channel 143 can be formed by the diffuser 142 to serve as a flow path through which the sprayed condensation water can flow. The width of channel 143 can be increased towards an outlet 144. Additionally, outlet 144 of channel 143 can be curved downwardly towards the front surface (e.g., a surface facing the air flow) of the evaporator 121. Therefore, the flow of condensate water discharged through the injection pipe 170 can be stabilized while the condensation water flows along the channel 143 of the diffuser 142. The condensation water can then fall towards the front surface of the evaporator 121, conforming - to the shape of outlet 144. That is, since the speed of the condensation water can be high immediately after the condensation water is discharged from the injection pipe 170 due to the pressure of the pump 150, a large amount of water can be dispersed due to collisions with the wall surface.
    When the amount of condensation water flowing through channel 143 becomes large, large amounts of condensation water can be lost and the portion of the condensation water that is guided to the front surface of the evaporator 121 can be reduced. Therefore, the velocity of condensation water flowing through the diffuser 142 can be reduced and stabilized before supplying the condensation water to the evaporator 121, thereby maximizing the condensation water provided in the evaporator 121.
    In order to stabilize the water flow, sufficient length of channel 143 of diffuser 142 may be required. In certain cases, since the length of channel 143 may be insufficient to stabilize the flow of water, a guide plate 145 can be provided, which redirects dispersed water towards the front surface of the evaporator 121. Guide plate 145 can be arranged separately from outlet 144 and provided on the lower surface of cover plate 140. Guide plate 145 can be tilted upwards towards the front surface of evaporator 121. Consequently, even when some condensation water discharged through outlet 144 is dispersed, the dispersed condensation water can be redirected to the front surface of the evaporator 121 by means of the guide plate 145.
    In one embodiment, the position of the injection pipes 170 relative to the diffuser 142 can be adjustable to control the length of the channel and the flow of water through the channel. For example, coupling unit 171 can be slidably coupled to cover plate 140 to provide adjustability. In addition, a housing can be provided on the front surface of the evaporator 121 to further contain the flow of water on the front surface.
    Here, an extension, in which the condensation water discharged by each of the diffusers 142 reaches the evaporator 121, may be smaller than the total area of the evaporator 121, which requires cleaning. Therefore, the condensation water sprayed by a diffuser 142 can reach a partial area of the evaporator 121, but not the entire area of the evaporator 121. However, the condensation water sprayed by the three diffusers 142 reaches different areas, as shown in the figures. Thus, it can be difficult to clean the entire area of the evaporator 121 using a diffuser 142, but it is possible to clean the entire area of the evaporator 121 by increasing the extents over which the condensed water is sprayed by the individual diffusers 142.
    Here, the entire area of the evaporator 121, as referred to here, does not necessarily refer to the entire surface of the evaporator 121. It should be noted that the entire area may also include other areas on which lint from hot air can be deposited, requiring cleaning.
    However, when the amount of condensation water that is stored in the condensation water storage portion 134 is greater than a prescribed amount, the condensation water can be drained to maintain a desired level. A water level sensor can be provided to detect the level of condensation water. When the sensor detects the level of condensation water in the condensation water storage portion 134 exceeding the prescribed amount, the condensation water can be drained through the drain port 169 of the control valve 160 when using the pump 150. A Condensation water drained in this way can be drained out of cabinet 100 through drain piping 184, thereby controlling the amount of condensation water in the condensation water storage portion 134.
    However, draining out of cabinet 100 may be possible unless a drainage system, such as a drainpipe, is provided at a location where the washing machine 1 is installed. As shown in Figure 12, a condensation water reservoir 109 can be provided in an upper region of the cabinet 10 to store condensation water. The drain piping 184 can be connected to the condensation reservoir 109, in such a way that the condensation water can be stored in the condensation reservoir 109. The condensation water stored in the condensation reservoir 109 can be emptied by a user or used when additional condensation water is needed. In addition, in one embodiment, an external water source may be provided to supply additional water to the storage water storage portion 134. For example, when the amount of condensation collected from the evaporator 121 is insufficient (for example, as detected by water level sensors), water can be supplied through the external water source.
    The pump 150 can pump water from the condensing water storage portion 134 to the water supply ports 162, 163, 164 or the drain port 169. The pump 150 can be positioned in the water storage portion of condensation 134. The pump 150 can be immersed in water and may require a minimum level in the condensation water storage portion 134. A water level sensor can be provided in the condensation water storage portion 134, as well as in the condensation water collection filter 132. Water level sensors can detect either if a sufficient amount of water is present to clean the evaporator surfaces, or if too much condensation water is present to drain excess water.
    A controller can be provided to control the cleaning cycles for the evaporator 121.0 The controller can control the cleaning cycles based on the detected water levels. For example, when insufficient condensation water is detected, cleaning cycles can be adjusted to extend the time between cleaning cycles, reduce the duration of water flow during each cleaning cycle, or limit cleaning to a particular region of the evaporator surface 121 (for example, alternating regions to which water is supplied during each cleaning cycle).
    In addition, the pump 150 can provide water pressure and flow rate, which are greater or less than, for example, water supplied as a function of gravity. That is, a water reservoir (for example, overflow reservoir 109) can be used to supply water to control valve 160. Reservoir 109 can be positioned higher than evaporator 121 and can rely on gravity for the water flow. However, the water spurt or sudden flow of water based on gravity can be limited. Pump 150 can provide a water flow rate higher or lower than that achieved through gravity. Pump 150 can be optimized in capacity as well as in physical size. However, depending on the amount, duration and location of the water flow on the surface of the evaporator 121, it can be controlled as described above, a smaller pump 150 may be required.
    In one embodiment, the controller can control cleaning cycles based on an amount of lint formation detected on the surface of the evaporator 121. For example, airflow sensors can be provided in regions other than the front surface of the evaporator 121. The The detected air flow can correspond to an amount of lint that has accumulated in the evaporator 121. The controller can use the detected air flow to determine the cleaning cycle of the evaporator, including the particular region, duration and pattern of the cleaning cycle.
    The operation of the modality in Figure 1 will now be described. When lint collected on the evaporator surface needs to be removed, a controller detects the amount of condensation water stored in the condensation water storage portion 134. When the amount of condensation water detected is greater than the minimum amount needed to clean the evaporator, condensation water can be sprayed onto the evaporator surface when operating the pump or control valve. Here, the control valve can control the condensation water supplied by the pump so that it is sequentially sprayed through individual diffusers, while sequentially rotating the control disc.
    That is, by rotating the control disc, the water supply ports or the drain port face the cutting portion, communicating with the inlet port, and the condensation water is discharged from the control valve through the corresponding port. The condensed water discharged is sprinkled on the surface of the evaporator through injection piping and diffuser, part of the evaporator that is located within a sprinkling extension of the condensation water is cleaned by the sprinkled condensation water. Therefore, since the condensation water is sequentially sprayed by the individual diffusers, the surface of the heat exchanger can be correspondingly cleaned, for example, over a specified period of time.
    Here, the number of injection pipes spraying the condensation water at the same time can be varied according to the number of cut portions formed on the control disc. That is, when three cut portions are formed, condensation water is sprayed by two diffusers at the same time. The number of cut portions can be determined according to the pump capacity and the purpose of the dryer.
    The control valve can selectively control the flow of water to the desired injection pipe 170 and diffuser 142. When the amount of condensation water is determined to be insufficient to clean the entire front surface of the evaporator, the controller can selectively direct the water to a particular diffuser, based on previous cleaning cycles. For example, the controller can store in a memory the order and duration of the water flow through the diffusers. Once a quantity of water is available, the water can be directed to a particular diffuser based on the information stored, for example, a diffuser for a region that may need cleaning most. In one embodiment, a sensor can be provided to detect the deposit of lint on the front surface of the evaporator 121, such as an air flow sensor in the plurality of regions on the front surface for each of the diffusers. Therefore, the area to be cleaned can be determined based on the amount of lint deposit.
    On the one hand, instead of spraying the condensation water on a partial area of the evaporator when the amount of condensation water is insufficient to clean the entire area of the evaporator, the entire area of the evaporator can be cleaned by controlling the amount of water condensation spray for each diffuser. For example, the amount of water sprayed through each of the diffusers can be reduced based on the amount of condensation water that is available. In this embodiment, the evaporator 121 can be cleaned only with condensation water. External supply, such as water supply, can also be used. When an inlet port is added to the control valve, an external supply is connected to the inlet port, or an additional water pipe branching out from water tubing connected to the inlet port, the evaporator can be cleaned with water being supplied from external supply. The external water supply can also be connected to the water storage portion 134.
    Here, in order to control the water supply from the external supply, a stop / release valve capable of interrupting a flow path can be installed in the water pipe connected to the external supply. When condensation water is sufficient, cleaning is performed only with the condensation water. When condensation water is not sufficient, the stop / release valve is opened to allow the use of water from the external supply together with the condensation water.
    Figures 13 to 17 show a washing machine having a heat exchanger cleaning device according to another embodiment. The nozzle configuration of this modality is different from the nozzle configuration of the modality of Figure 1. The washing machine of this modality includes several characteristics, which are the same or similar to the modality of Figure 1, in which equal numerical references denote equal elements. Just to facilitate description, repetitive description of common features previously described is omitted below.
    In this embodiment, a spray nozzle 200 may include three water supply ports 212 and three spray chambers 202, which communicate with water supply ports 212.
    Specifically, the spray nozzle 200 may include an upper member 210 in which the three water supply ports 212 are formed and a lower member 220, which is coupled to the upper member 210 and has three spray chambers 202 therein. The spray nozzle 200 can be coupled with the cover plate 140 by means of two coupling units 214 and 222, which extend from both ends of the upper member 210 and the lower member 220. In one embodiment, the coupling units 214 and 222 can be mounting brackets. In addition, the spray nozzle 200 can be configured in such a way that the position of the spray nozzle 200 relative to the front surface of the evaporator 121 can be adjustable.
    The lower member 220 can have a cavity within it, and the cavity can be divided into three spray chambers 202 by means of a partition 228 provided in the cavity. Thus, a sunken portion 226 can be provided along the edge of the lower member 220. The sunken portion 226 can be coupled with a corresponding protruding portion provided in the upper member 210 to be described below, thereby sealing the inside of the spray chambers in relation to the external side. In addition, a spray gap 224 can be formed on the bottom surface of the lower member 220, which can extend in a longitudinal direction of the lower member 220 to spray the provided condensation water. The spray slot 224 can be arranged at the bottom of the cover plate 140.
    A notch 218, which is engaged with partition 228, can be formed within the upper limb 210, and a protruding portion 216 can be formed to return to the sunken portion 226. Therefore, as shown in Figure 17, the portion sunken 226 and the protruding portion 216 can engage with each other, thus preventing leakage of condensation water from the spray chambers 202. The spray gap 224 can be located on top of the front surface of the evaporator 121, in such a way that the condensation water sprayed through the spray gap 224 can be sprayed on the front surface of the evaporator 121. In certain embodiments, the spray gap 224 can be positioned away from the front surface of the evaporator 121. In this case, a diffuser it can be provided to guide water to the front surface of the evaporator 121, as previously described with reference to Figure 11.
    Here, a spray slit 224 can be formed along the entire lower member 220. Alternatively, a plurality of spray slits can be formed in each of the spray chambers. In addition, a plurality of inlet ports may be formed in a spray chamber, or a plurality of inlet chambers may share an entrance port.
    权利要求:
    Claims (20)
    [0001]
    1. Washing machine comprising: a cabin; a drum provided in the cabin; a heat exchanger for heating air for dry cleaning in the drum; a first tube formed between the drum and the heat exchanger to guide air from the drum to the heat exchanger; a second tube formed between the heat exchanger and the drum to guide the air from the heat exchanger to the drum; and a control valve for controlling a flow of water in relation to the heat exchanger and including at least one inlet port and a first and second outlet port; and a controller for controlling the control valve, characterized by the fact that an area of the heat exchanger is divided into a plurality of regions, a first nozzle is coupled to the first outlet port and provided above a first region of the plurality of regions , a second nozzle is coupled to the second outlet port and provided above a second region of the plurality of regions and the controller controls the control valve to selectively direct the flow of water only towards the first nozzle through the first outlet or only in towards the second nozzle through the second outlet, so that the first and second nozzles are opened at different times.
    [0002]
    2. Washing machine according to claim 1, characterized by the fact that it additionally includes a third nozzle coupled to a third control valve outlet port and provided above a third region of the plurality of regions, in which the controller sequentially directs the water flow to the first, second and third nozzles through the first, second and third outlets, respectively.
    [0003]
    3. Washing machine according to claim 1, characterized by the fact that it additionally includes a third nozzle coupled to a third control valve outlet port and provided above a third region of the plurality of regions, in which the controller selectively directs the water flow to the first, second and third nozzles through the first, second and third outlets, respectively.
    [0004]
    4. Washing machine according to claim 1, characterized by the fact that it additionally includes a fourth nozzle coupled to the first outlet port of the control valve and provided above a fourth region of the plurality of regions, in which the controller directs the water flow to the first and fourth nozzles through the first outlet port.
    [0005]
    5. Washing machine according to claim 4, characterized by the fact that the first and fourth regions are not adjacent to each other.
    [0006]
    6. Washing machine according to claim 1, characterized by the fact that it additionally includes a fifth nozzle coupled to a fifth control valve outlet port and provided above the first region, in which the controller directs the flow of water to the first and fifth nozzles.
    [0007]
    7. Washing machine, according to claim 1, characterized by the fact that the heat exchanger area is a front surface of the evaporator that faces the air flow and at least one of the first or second nozzles is positioned over the evaporator, a first prescribed distance from the front surface of the evaporator in a lateral direction.
    [0008]
    8. Washing machine according to claim 7, characterized by the fact that it additionally includes a channel formed between the first and second nozzles and the front surface of the evaporator to stabilize the flow of water, the channel having a width that increases from the nozzle towards the front surface of the evaporator.
    [0009]
    9. Washing machine according to claim 8, characterized by the fact that it additionally includes a guide plate positioned at a prescribed second distance from the front surface of the evaporator and inclined at a prescribed angle towards the front surface of the evaporator. evaporator and the channel to divert the water flow towards the front surface of the evaporator.
    [0010]
    10. Washing machine according to claim 1, characterized by the fact that one of the first or second nozzles has a round opening to discharge water from the control valve and additionally including a diffuser connected to the round opening, the diffuser forming a channel that extends between the nozzle and a corresponding region of the heat exchanger to guide the water to the corresponding region.
    [0011]
    11. Washing machine according to claim 1, characterized by the fact that at least one of the first or second nozzles has a slit to discharge the water from the control valve.
    [0012]
    12. Washing machine according to claim 10, characterized by the fact that the slot is positioned over a corresponding region of the heat exchanger and extends laterally through the corresponding region, such that water is discharged through the region corresponding.
    [0013]
    13. Washing machine according to claim 1, characterized by the fact that at least one of the first or second nozzle includes a spray nozzle assembly having a first water supply port connected to a first hose in relation to the first control valve outlet port, a first water chamber connected to the first water supply port, a first spray gap formed on a surface of the chamber and positioned over the first region, such that water flows in a first surface of an evaporator, a second water supply port connected to a second hose in relation to the second control valve outlet port, a second water chamber connected to the second water supply port, and a second spray gap formed on one surface of the second chamber and positioned on the second region, in such a way that water flows on a second surface of the evaporator.
    [0014]
    Washing machine according to claim 13, characterized in that the spray nozzle assembly includes an upper cover and a lower cover, which corresponds to a shape of the upper cover, the upper cover and the lower cover forming the first and second water chamber.
    [0015]
    15. Washing machine, according to claim 1, characterized by the fact that it additionally includes a cover plate provided over a heat exchanger evaporator, in which at least one of the first and second nozzles is formed entirely in cover plate.
    [0016]
    16. Washing machine according to claim 15, characterized by the fact that the first and second tubes are connected to a third tube that guides air through the heat exchanger, in which the cover plate forms at least a portion of the third tube.
    [0017]
    17. Washing machine according to claim 16, characterized in that the evaporator and condenser of the heat exchanger are positioned inside the third tube and the expander and compressor of the heat exchanger are positioned outside the third tube.
    [0018]
    18. Washing machine, according to claim 1, characterized by the fact that it additionally comprises a portion of water collection of condensation formed below the evaporator; and a filtering means to filter the condensation water collected in the condensation water collection portion.
    [0019]
    19. Washing machine according to claim 18, characterized in that the filtering means includes a plurality of ribs formed in the condensation water collection portion arranged at least at a low point.
    [0020]
    20. Washing machine, according to claim 1, characterized by the fact that it additionally comprises a portion of the condensation water collection formed below the evaporator; and a condensation water storage portion to receive the condensation water from the condensation water collection portion 15 and be located lower than a condensation water collection portion.
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    同族专利:
    公开号 | 公开日
    EP2691567A4|2015-08-05|
    US20120246960A1|2012-10-04|
    CN103547728A|2014-01-29|
    EP2691567B1|2016-11-23|
    EP2691567A2|2014-02-05|
    US8857071B2|2014-10-14|
    AU2012237107B2|2015-09-17|
    WO2012134149A3|2013-01-03|
    AU2012237107A1|2013-10-10|
    WO2012134149A2|2012-10-04|
    RU2533712C1|2014-11-20|
    ES2617216T3|2017-06-15|
    CN103547728B|2016-03-23|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-16| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-07-28| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020110028389A|KR101825448B1|2011-03-29|2011-03-29|Cleaning nozzle for a heat exchanger and heat exchanger cleaning apparatus using the same|
    KR10-2011-0028398|2011-03-29|
    KR1020110028390A|KR101806241B1|2011-03-29|2011-03-29|Clothes treating apparatus with a heat exchanger cleaning means|
    KR1020110028398A|KR20120110506A|2011-03-29|2011-03-29|Clothes dryer|
    KR10-2011-0028389|2011-03-29|
    KR10-2011-0028397|2011-03-29|
    KR1020110028391A|KR101825449B1|2011-03-29|2011-03-29|Cleaning nozzle for a heat exchanger and heat exchanger cleaning apparatus using the same|
    KR1020110028397A|KR101778968B1|2011-03-29|2011-03-29|Clothes dryer|
    KR10-2011-0028391|2011-03-29|
    KR10-2011-0028390|2011-03-29|
    PCT/KR2012/002226|WO2012134149A2|2011-03-29|2012-03-27|Clothes treating apparatus having heat exchanger cleaning device|
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