JP2014079389A - Washing machine and washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an occurrence of an accident such as underfloor flooding due to overflow of water from a water tub even when an abnormal condition such as a failure of the water supply valve occurs.SOLUTION: The washing machine includes: a water tub 3 elastically supported in a housing 1; a rotary tub 5 rotatably provided in the water tub 3 and serving for housing clothing; and water supply means for supplying water to the water tub 3. The water supply means has: a water supply hose 18 for leading tap water into the water tub 3; a water supply valve 17 connected to the water supply hose 18 and configured to supply water and cut off water into the water tub 3; and a check valve 53 connected to the water supply valve 17 and configured to cut off water into the water tub 3 when a prescribed time elapses after receiving the pressure of tap water. When an abnormal condition such as a failure of the water supply valve occurs, a water supply into the water tub is suppressed, and an occurrence of an accident such as underfloor flooding due to overflow of water from the water tub is prevented. Thus, a washing machine excellent in reliability is achieved.

Description

  The present invention relates to a washing machine and a washing / drying machine that perform washing by supplying tap water into a water tank.

  As an example of a conventional washing machine, a drum-type washing and drying machine as shown in FIG. 6 will be described.

  As shown in the drawing, a cylindrical water tank 3 elastically supported by a plurality of suspensions 2 is provided inside the housing 1 so that vibrations during washing and dehydration are absorbed by the suspension 2. Inside the water tank 3, a cylindrical, horizontal axis type rotating tank 5 that accommodates an object 4 to be washed or dried (hereinafter referred to as clothing) is rotatably arranged, and a rotating shaft 6 a is rotated by a drive motor 6. To rotate. A plurality of baffles (not shown) for stirring clothes are provided on the inner wall of the rotating tub 5, and a plurality of small holes 5 a are provided on the peripheral wall of the rotating tub 5.

  On the front surface of the housing 1, there are provided an opening 1a through which clothes 4 are taken in and out and a door 7 for opening and closing the opening 1a. Similar openings 3 a and 5 b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3 a of the water tank 3 is water-tightly connected to the opening 1 a of the housing 1 by a bellows 8. The bottom of the aquarium 3 has a drain port 9 for discharging washing water, and is connected to a drain hose 11 via a drain valve 10, and its tip is led out of the machine.

  The blower 12 blows and supplies the warm air heated by the heater 13 from the air supply port 14 into the rotary tank 5. The circulation duct 15 performs dehumidification of the damp drying air that has passed through the rotary tank 5 and the water tank 3, and has one end connected to the exhaust port 16 at the bottom of the water tank 3 and the other end connected to the blower 12. . The water supply valve 17 controls water supply from a water supply hose 18 connected to a tap or the like of a water supply.

  In the above configuration, when the washing operation is performed, the door 7 is opened, the clothes 4 and the detergent are put into the rotating tub 5, and the operation is started.

  First, when the water supply valve 17 opens the water supply port on the washing water side and a predetermined amount of water is supplied into the water tank 3 and the rotary tank 5, the drive motor 6 is activated and the rotary tank 5 is rotationally driven to perform a washing operation. .

  After a predetermined time, the drive motor 6 is stopped, the drain valve 10 is opened, and dirty water is drained from the rotary tank 5 and the water tank 3 and drained to a drainage place outside the machine via the drain hose 11.

  Next, water is supplied to the water tank 3 and the rotary tank 5 in the same manner as described above, and a rinsing operation is performed. When the rinsing is completed, the drain valve 10 is opened and drained, and then the rotating tub 5 is rotationally driven by the drive motor 6 at a high speed, whereby the clothes 4 are dehydrated.

  When the washing operation is completed as described above, the drying operation is started. In the drying process, while the rotating tub 5 is driven to rotate at a low speed by the drive motor 6 and the clothes 4 are stirred, the air blown in the direction of the arrow 19 by the blower 12 is heated by the heater 13 to become warm air, and the air supply port 14 into the rotary tank 5.

  This hot air takes away moisture from the garment 4, then passes through the water tank 3 through the small hole 5 a of the rotating tub 5 and reaches the circulation duct 15 through the exhaust port 16.

  At this time, the water supply valve 17 opens the water supply port on the cooling water side, and cooling water is poured into the circulation duct 15. When the warm air containing moisture from the clothing 4 deprives moisture and passes through the circulation duct 15, the cooling water cools it to cause moisture condensation, and the moist warm air is dehumidified and again as shown by the arrow. Return to the blower 12. This cooling water and dew condensation water is drained out of the machine via the drain valve 10.

  By circulating hot air through the circulation path of the blower 12, the heater 13, the air supply port 14, the rotary tank 5, the water tank 3, the exhaust port 16, and the circulation duct 15, the clothes 4 in the rotary tank 5 can be dried. it can.

  In the above conventional configuration, the heat used for drying the garment 4 was all discarded to the outside by the cooling water of the circulation duct 15 or the heat radiation from the housing 1, but a compressor that compresses the refrigerant, The refrigerant circulates through a radiator that dissipates the heat of the compressed refrigerant, a throttle means for reducing the pressure of the high-pressure refrigerant, and a heat absorber that takes the heat from the surroundings when the low-pressure refrigerant is reduced in pressure. The clothes dryer is provided with a heat pump device connected by a pipe line and reused (see, for example, Patent Document 1).

  In the conventional configuration described above, undiluted washing water or organic acids enter the wind circuit for drying, corrode the heat exchanger, and the heat exchange performance may be deteriorated or the refrigerant may leak or pass through the wind circuit. The lint (waste thread) that adheres to the heat exchanger may cause a reduction in air volume and heat exchange performance.

  Therefore, even if stock solution of washing water, organic acid, or lint enters the blower circuit, heat exchange is performed with tap water so that it is less susceptible to corrosion on the heat exchanger and reduced air volume and heat exchange performance as a wind circuit. It has been proposed to have a heat exchanger cleaning means for cleaning the chamber. (For example, see Patent Document 2)

JP 7-178289 A JP 2005-224491 A

  However, when the water supply valve is abnormal, water is inadvertently supplied into the aquarium, and water overflows from the aquarium, causing accidents such as underfloor flooding.

  In addition, when a heat exchanger cleaning means for cleaning the heat exchanger with tap water is provided, water is inadvertently supplied to the heat exchanger when the water supply valve is abnormal, causing damage to the heat exchanger or overflowing water. Accidents such as underfloor flooding.

  The present invention solves the above-described conventional problems, and even if an abnormality such as a failure occurs in a water supply valve, water supply to the water tank is suppressed, and water overflows from the water tank and an accident such as underfloor inundation occurs. The purpose is to realize a washing machine excellent in reliability.

  In addition, even when there is a heat exchanger washing means for washing the heat exchanger with tap water, when an abnormality such as a failure occurs in the water supply valve, the washing water is prevented from being jetted to the heat exchanger, The purpose is to realize a highly reliable washing and drying machine by preventing the heat exchanger from being damaged or causing an accident such as flooding under the floor due to water overflow.

  In order to solve the above-described conventional problems, a washing machine of the present invention includes a water tank elastically supported in a housing, a rotary tank that is rotatably provided in the water tank and stores clothes, and supplies water to the water tank. A water supply hose for guiding tap water into the water tank, a water supply valve connected to the water supply hose for supplying and stopping water, and connected to the water supply valve. And a check valve that stops water supply to the water tank when a predetermined time elapses after receiving tap water pressure.

  As a result, even if an abnormality such as a failure occurs in the water supply valve, water supply into the water tank is suppressed, preventing water from overflowing from the water tank and causing accidents such as underfloor inundation, and a highly reliable washing machine Can be realized.

  In order to solve the above-mentioned conventional problems, the washing and drying machine of the present invention includes a compressor, a radiator that radiates heat of the compressed refrigerant, and a throttle means for reducing the pressure of the high-pressure refrigerant. A heat pump device that is connected by a pipe line so that the refrigerant circulates through a heat absorber that takes heat from the surroundings of the refrigerant that has been decompressed and reduced in pressure, and is disposed between the heat radiator and the heat absorber, And it has the washing | cleaning means which inject | pours tap water into the said heat radiator and the said heat absorber, and wash | cleans the said heat radiator and the said heat absorber, The said washing | cleaning means is set as the structure connected with the said water supply means.

  As a result, even when there is a heat exchanger cleaning means for cleaning the heat exchanger with tap water, it is possible to prevent the cleaning water from being injected into the heat exchanger when an abnormality such as a failure occurs in the water supply valve. It is possible to prevent a heat exchanger from being damaged or to cause an accident such as underfloor flooding due to overflow of water, and to realize a highly reliable washing and drying machine.

  The washing machine of the present invention can suppress water supply into the water tank even if an abnormality such as a failure occurs in the water supply valve, and can prevent an accident such as underfloor inundation due to overflow of water from the water tank.

  In addition, in a washing and drying machine having a heat exchanger cleaning means for cleaning the heat exchanger with tap water, even if an abnormality such as a failure occurs in the water supply valve, the washing water is prevented from being injected into the heat exchanger. It is possible to prevent the heat exchanger from being damaged or causing an accident such as flooding under the floor due to overflow of water.

1 is an external perspective view of a washing machine according to an embodiment of the present invention. Cross section of the main part of the washing machine Cross section of the main part of the washing machine Configuration of heat pump device and system conceptual diagram in the embodiment of the present invention Sectional drawing of the non-return valve in embodiment of this invention Cross-sectional view of a conventional washing and drying machine

  1st invention is equipped with the water tank elastically supported in the housing | casing, the rotation tank which is rotatably provided in the said water tank, and accommodates clothing, The water supply means which supplies water to the said water tank, The said water supply means A water supply hose for introducing tap water into the water tank, a water supply valve connected to the water supply hose to supply and stop water in the water tank, connected to the water supply valve, By having a check valve that stops water supply into the water tank over time, even if a malfunction occurs in the water supply valve, water supply to the water tank is suppressed and water overflows from the water tank and floods under the floor. The occurrence of accidents such as these can be prevented, and a highly reliable washing machine can be realized.

In the second invention, in particular, in the first invention, the water supply time for supplying water into the water tank is set to be shorter than the predetermined time, whereby the check valve is closed and the water supply is stopped. Thus, it is possible to reliably supply water while avoiding this, and it is possible to realize a washing machine with excellent reliability.

  In a third aspect of the invention, particularly in the washing machine of the first or second aspect of the invention, a compressor, a radiator that radiates heat of the compressed refrigerant, and a throttle means for reducing the pressure of the high-pressure refrigerant A heat pump device that is connected by a pipe line so that the refrigerant circulates through a heat absorber that takes heat from the surroundings of the refrigerant that has been decompressed and reduced in pressure, and is disposed between the heat radiator and the heat absorber, And it has a washing | cleaning means which inject | pours tap water into the said heat radiator and the said heat absorber, and wash | cleans the said heat radiator and the said heat absorber, The said washing | cleaning means is set as the structure connected with the said water supply means. Even if there is a heat exchanger cleaning means that cleans the heat exchanger in the case, when the water supply valve malfunctions, it is possible to prevent the cleaning water from being injected into the heat exchanger, and the heat exchanger Prevents damage and accidents such as flooding under the floor due to water overflow , It is possible to achieve excellent washing dryer reliability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Components having the same configurations as those of the conventional example are denoted by the same reference numerals, and detailed description thereof is omitted. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
A drum-type washing / drying machine having a drying function will be described as an example. FIG. 1 is an external perspective view of a washing machine according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the housing 1 viewed from the back 1b direction. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a system conceptual diagram showing the configuration of the heat pump apparatus and the flow of drying air in the present embodiment.

  As shown in the figure, a cylindrical water tank 3 elastically supported by a plurality of suspensions 2 is provided inside the housing 1, and vibrations during washing and dehydration are absorbed by the suspension 2. Inside the water tank 3, a cylindrical and horizontal axis type rotating tank 5 that accommodates the clothing 4 is rotatably provided and is driven to rotate by a drive motor 6.

  On the front surface of the housing 1, there are provided an opening 1a through which clothes 4 are put in and out, and a door 7 for opening and closing the opening. Similar openings 3 a and 5 b are also provided on the front side of the water tank 3 and the rotating tank 5, and the opening 3 a of the water tank 3 is water-tightly connected to the opening 1 a of the housing 1 by a bellows 8. The bottom of the water tank 3 has a drain port 9 for discharging washing water and is connected to a drain valve 10.

  The blower 12 constituting the blowing means is provided on the upper part of the water tank 3 so as to be positioned in a corner space formed by the upper surface 1c and the side surface 1d of the housing 1. The blower 12 communicates with an air supply duct 20 provided on the outer surface of the water tank 3, and blows air in the direction of arrow c from the air supply duct inlet 21 of the air supply duct 20 to the inside of the rotary tank 5 from the air supply port 14. To supply.

  Further, an exhaust duct 22 communicating with the exhaust port 16 on the back surface of the water tank 3 is provided on the outer surface of the water tank 3, and the air that has passed through the rotary tank 5 and the water tank 3 and has exited the exhaust port 16 is indicated by an arrow d. To the exhaust duct outlet 23.

  In the lower part of the water tank 3, a heat absorber air passage 31 for flowing air in the direction of arrow a to a heat absorber 30 comprising a heat exchanger constituting the heat pump device, and a heat radiator 32 similarly comprising a heat exchanger indicated by arrow b A radiator air passage 33 for flowing air in a direction is arranged in a horizontal direction, and the heat absorber air passage 31 and the radiator air passage 33 communicate with each other through a circulation duct 34 and pass through the heat absorber 30 and the radiator 32. The air that flows is designed to flow linearly. The heat absorber air passage 31, the radiator air passage 33, and the circulation duct 34 are integrally formed and fixed to an attachment base 35 in the housing 1.

  The inlet of the heat absorber air passage 31 and the exhaust duct outlet 23 communicate with each other via an exhaust port hose 36 made of a bellows-like stretchable flexible material. Similarly, the outlet of the radiator air passage 33 and the air supply duct inlet 21 communicate with each other via an air supply hose 37 made of a bellows-like stretchable flexible material.

  In addition, an air filter 38 made of a synthetic fiber net or the like is detachably provided at the inlet portion of the heat absorber air passage 31 as filter means for removing foreign substances in the air. Further, a discharge port 39 for discharging the dehumidified water is provided in the lower part on the downstream side of the heat absorber air passage 31.

  After the drying air blown by the blower 12 passes through the air supply duct 20 and enters the rotary tank 5 through the air supply port 14 and passes through the clothing 4 in the rotary tank 5, as indicated by an arrow 40 in FIG. 4. , Exits the exhaust port 16, passes through the exhaust duct 22, passes through the heat absorber 30 of the heat absorber air passage 31, passes through the circulation duct 34, passes through the radiator 32 of the radiator air passage 33, and returns to the blower 12. It is supposed to circulate.

  In addition, the heat pump device includes a compressor 41, a radiator 32 that radiates heat of the compressed refrigerant, a throttle means 42 that includes a throttle valve, a capillary tube, and the like for reducing the pressure of the high-pressure refrigerant, and a reduced pressure. The refrigerant having a low pressure is connected to a heat absorber 30 that takes heat from the surroundings by a pipe 43 so that the refrigerant circulates, and the refrigerant flows and circulates in the direction of an arrow 44 to realize a heat pump cycle.

  Further, a cleaning means 46 for ejecting tap water as a cleaning liquid to the heat absorber 30 and the radiator 32 is provided in the air passage. The cleaning means 46 is connected to the water supply valve 17 and the water supply hose 18.

  Next, the operation of the above configuration will be described.

  The water supply valve 17 controls water supply from a water supply hose 18 connected to a tap or the like of a water supply. First, in the washing process, with the drain valve 10 closed, the water supply valve 17 opens the water supply port on the washing water side, and supplies water until reaching a predetermined water level 45 in the water tank 3 and the rotary tank 5, and then the drive Washing is performed by rotating the garment 4 and the rotating tub 5 containing the washing water by the motor 6.

  At this time, a part of the cleaning water enters the exhaust duct 22, but the exhaust duct 22 has a shape in which the path is lifted upward so that the cleaning water does not easily enter the heat absorber 30.

  Further, in the rinsing process after washing, water is supplied into the water tank 3 as in the washing process, and the garment 4 is rinsed by rotating the rotating tank 5. In the dehydration step, the drain valve 10 is opened to drain water to the outside of the machine, and then the rotating tub 5 containing the clothing 4 is rotated at high speed by the drive motor 6 to dehydrate.

  In the drying process, when the compressor 41 of the heat pump device is operated, the refrigerant is compressed, and the pressure circulates through the radiator 32, the throttle means 42, and the heat absorber 30. In the radiator 32, heat is released by the compression of the refrigerant, and in the heat absorber 30, the heat is absorbed by the refrigerant that has been depressurized by the throttle means 42 to become a low pressure.

  At this time, the blower 12 is activated, and the warm air heated by the heat radiation of the radiator 32 is blown into the rotary tank 5 through the supply duct 20 from the supply port 14. The rotating tub 5 is rotationally driven by a drive motor 6 and the clothes 4 are stirred up and down.

  The warm air blown into the rotary tub 5 takes moisture when passing through the gaps of the clothing 4 and passes through the exhaust duct 22 and the exhaust port hose 36 through the exhaust port 16 of the water tub 3 in the wet state, The foreign matter such as lint is removed through 38 and reaches the heat absorber air passage 31.

  When the wet warm air passes through the heat absorber 30, sensible heat and latent heat are taken away and dehumidified, and separated into dry air and dehumidified water. This dry air enters the radiator air passage 33 through the circulation duct 34, is heated again by the radiator 32, becomes warm air, passes through the air supply hose 37, the air supply duct 20, and circulates to the blower 12. To do. On the other hand, the dehumidified water dewed by the heat absorber 30 is discharged out of the machine from the bottom discharge port 39.

  By using the heat pump device in this way, the heat absorbed by the heat absorber 30 can be recovered by the refrigerant and radiated again by the heat radiator 32 to give the garment 4 more heat than the energy input to the compressor 41. Therefore, it becomes possible to shorten the drying time and realize energy saving.

  In addition, the air containing the aqueous solution and evaporated water that has entered through the exhaust port 16 and the air supply port 14 in the process from washing, rinsing, dehydration, and drying of the series of clothes 4 may contain anions and organic acids. Because it has the property, it adheres to the fins and pipes when passing through the heat absorber 30 and the heat radiator 32, which are heat exchangers, and promotes corrosion. However, since the cleaning means 46 is provided, the heat exchanger is cleaned. It is possible to control to clean the surface of the heat exchanger at an arbitrary timing by spraying tap water evenly onto the heat absorber 30 and the radiator 32 that are heat exchangers.

  As described above, the heat pump apparatus is provided with the cleaning means 46 that can uniformly inject the heat exchanger cleaning aqueous solution into the heat absorber 30 and the heat radiator 32 that are heat exchangers and clean the surface of the heat exchanger. Therefore, corrosion can be prevented and lint attached to the surface of the heat exchanger can be removed, so that the reliability and durability of the heat pump device are improved.

  Next, the structure provided with the check valve 53 will be described.

  A water supply hose 18 extended to the outside of the housing 1 for introducing tap water is connected to a water supply valve 17 provided in the housing 1, and water is supplied into the water tank 3 by opening the water supply valve 17. Water supply to the water tank 3 is stopped by closing the valve 17. Further, the cleaning means 46 is connected to the water supply valve 17, the water supply to the cleaning means 46 is performed by opening the water supply valve 17, and the water supply to the cleaning means 46 is stopped by closing the water supply valve 17.

  The water supply valve 17 and the water tank 3 are connected by a water supply pipe 47, and tap water is supplied into the water tank 3. Further, the water supply pipe 47 is branched and connected to the cleaning means 46, and the cleaning means 46 and the water supply valve 17 are connected via the water supply pipe 47. Instead of passing through the water supply pipe 47, water may be supplied into the water tank 3 through a detergent case (not shown) provided on the downstream side of the water supply valve 17.

  Here, the check valve 53 is provided to be connected to the downstream side of the water supply valve 17. The check valve 53 may be directly connected to the water supply valve 17 or may be indirectly connected via piping such as a hose. Further, the check valve 53 may not be provided on the downstream side of the water supply valve 17 but may be provided at a connection portion between the water supply valve 17 and the water supply hose 18 or may be provided in the water supply hose 18.

  FIG. 5 is a detailed sectional view of the check valve 53.

  The valve element 53a of the check valve 53 receives a force in a direction away from the closing plane part 53c by the coil spring 53b, and passes through the gap between the valve element 53a and the closing plane part 53c as shown by an arrow in FIG. Thus, water flows through the check valve 53.

When water flows through the check valve 53, the pressure receiving surface 53d of the valve body 53a receives a water pressure, so that when the water pressure is equal to or higher than a predetermined pressure, the coil spring 53b is gradually compressed. Usually, the predetermined pressure is set to be smaller than the water pressure. That is, when the water supply valve 17 is opened and water supply is started, the valve body 53a receives a water pressure and gradually presses and contracts the coil spring 53b.

  When the water supply valve 17 is opened and water supply is started and the valve body 53a gradually presses and contracts the coil spring 53b and a predetermined time elapses, the valve body 53a comes into contact with the closing flat surface portion 53c. The valve body 53a is configured to be in watertight contact with the closing flat surface portion 53c over the entire circumference. When the valve body 53a and the closing flat surface portion 53c are in contact with each other, the valve body 53a and the closing flat surface portion 53c , The water flowing through the check valve 53 stops, and the water supply stops.

  If the water supply valve 17 is closed before the valve body 53a and the closing flat portion 53c come into contact with each other, the water pressure received by the pressure receiving surface 53d disappears, and the valve body 53a returns to the original position by the action of the coil spring 53b.

  When water is supplied to the water tank 3, the water supply valve 17 is opened within a time shorter than a predetermined time required for the valve body 53a and the closing flat surface portion 53c to contact each other. By doing in this way, at the time of normal water supply, it is avoided that the non-return valve 53 closes and water supply stops. If the amount of water supply during this period is less than the predetermined water level of the water tank 3, the water supply valve 17 is repeatedly opened and closed several times to avoid the check valve 53 from closing. I do. In this way, by setting the water supply time per time shorter than the time required for the check valve 53 to close, it is possible to reliably supply water while preventing the check valve 53 from closing and water supply from stopping. It can be carried out.

  When the water supply valve 17 cannot be closed while the water supply valve 17 is open due to a failure or clogging of foreign matter, the water supply time is a predetermined time required for the valve body 53a and the closing flat portion 53c to contact each other. Therefore, the valve body 53a and the closing flat surface portion 53c come into contact with each other, the check valve 53 is closed, and the water supply is stopped.

  Therefore, at the time of abnormal water supply, it is possible to prevent water check from being stopped by the action of the check valve 53, causing an overflow of water from the water tank 3 and an accident such as underfloor inundation.

  The check valve 53 not only stops water supply to the water tank 3 but also stops water supply to the cleaning means 46 at the same time. As a result, even if an abnormality such as a failure occurs in the water supply valve, the washing water is prevented from being sprayed to the heat exchanger, causing damage to the heat exchanger or an accident such as flooding under the floor due to water overflow. Can be prevented.

  As described above, the washing machine according to the present invention suppresses the water supply to the water tank even if an abnormality such as a failure occurs in the water supply valve, and the water overflows from the water tank, causing an accident such as underfloor inundation. Therefore, the present invention can be applied to other household equipment and business equipment having a water supply valve directly connected to tap water.

DESCRIPTION OF SYMBOLS 1 Case 3 Water tank 5 Rotating tank 17 Water supply valve 18 Water supply hose 30 Heat absorber 32 Radiator 41 Compressor 42 Throttle means 46 Washing means 53 Check valve

Claims (3)

A water tank elastically supported in a housing; a rotary tank that is rotatably provided in the water tank and that stores clothing; and a water supply means for supplying water to the water tank, wherein the water supply means supplies tap water to the water tank. A water supply hose for introducing water into the water tank, a water supply valve connected to the water supply hose for supplying and stopping water, and a water supply valve connected to the water supply valve, and when a predetermined time elapses after receiving tap water pressure. And a check valve for stopping water supply to the washing machine. The washing machine according to claim 1, wherein a water supply time for supplying water into the water tank is set to be shorter than the predetermined time. The washing machine according to claim 1 or 2,
The refrigerant includes a compressor, a radiator that dissipates the heat of the compressed refrigerant, a throttle means for reducing the pressure of the high-pressure refrigerant, and a heat absorber that draws heat from the surroundings when the low-pressure refrigerant is reduced in pressure. And a heat pump device connected by a pipe line so as to circulate, and is disposed between the radiator and the heat absorber, and tap water is injected into the radiator and the heat absorber to dissipate the radiator and the heat A washing / drying machine having a washing means for washing the heat absorber, wherein the washing means is connected to the water supply means.