JP4691473B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a drum-type washing and drying machine equipped with a heat pump device.

  A washing / drying machine equipped with a heat pump device is described in Japanese Patent Application Laid-Open No. 64-32893 (Patent Document 1). The heat pump device of the washing and drying machine is composed of a compressor that compresses the refrigerant, a radiator that radiates the heat of the compressed refrigerant, an adjustment valve that depressurizes the pressure of the compressed refrigerant, It has a heat sink that takes heat away.

  This washing dryer dries while heating and dehumidifying the air for drying by operating the heat pump device in the drying process.

JP-A-64-32893

  Since this washing dryer dries while drying and dehumidifying the drying air in the drying process, the drying becomes faster.

  In this washing dryer, condensed water is generated during the operation of the drying process. This condensed water was drained outside the machine. The amount of condensed water generated by one washing and drying is about 17 L (liter).

  An object of this invention is to provide the washing-drying machine which utilizes the condensed water produced | generated at a drying process for washing water in view of said present condition.

  The present invention relates to a cylindrical outer tub provided in an outer frame casing, a cylindrical laundry drying tub that is rotatably provided in the outer tub and stores laundry, a compressor, a radiator, and a heat absorber. In the washing / drying machine having the heat pump device, a condensed water storage tank for storing condensed water generated by condensation of the heat absorber is provided at a lower portion of the heat pump device.

  According to the present invention, since the condensed water collected during the drying operation is utilized for washing, water saving can be achieved.

  Embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the drum-type washing and drying machine has a bottomed cylindrical outer tub 2 placed inside an outer frame housing 1. The outer tub 2 is supported from below by a plurality of suspensions 3 on the rear side from the center. Further, the outer tub 2 is supported by being suspended from its upper portion by a pulling spring 4.

  The suspension 3 supports the entire weight including the outer tub 2, has a strong elastic support structure, and is fixed to the outer frame base 20 of the outer frame housing 1. In particular, a damping mechanism or the like is provided for absorbing strong vertical vibration of the outer tub 2 that occurs during the dehydration operation and preventing abnormal vibration of the outer tub 2 that occurs when dehydration is started.

  The attachment position of the suspension 3 is provided at a substantially center of gravity of the outer tub 2. Since the outer tub 2 is provided so as to incline so that the rear end side is downward, the height of the suspension 3 that positions the suspension 3 on the rear side is lowered. The stroke of the suspension 3 is reduced.

  For this reason, in order to maintain the damping function of the suspension, it is more desirable that the mounting position of the suspension 3 is located substantially on the center side of the outer tub 2 than the rear position.

  Further, the pulling spring 4 supported by hanging from the upper part of the outer tub 2 is provided to support the falling of the outer tub 2 and to prevent vertical / horizontal vibration during dehydration.

  A water supply electromagnetic valve 6 and a detergent charging case 8 are provided inside the upper side of the outer frame housing 1. The detergent charging case 8 is connected to the water supply electromagnetic valve 6 through a water injection hose 7. A water supply hose 5 is connected to the water supply electromagnetic valve 6. The tip of the water supply hose 5 is connected to a tap (not shown).

  When washing is too easy, the water supply electromagnetic valve 6 is opened, and water necessary for washing and washing is supplied from the water injection hose 7 to the detergent charging case 8.

  A detergent necessary for washing is put into the detergent charging case 8. Further, at the time of rinsing, a softening finishing agent for improving the finish of the laundry is put into the case portion for storing the finishing agent provided in the detergent charging case 8 and automatically put into the outer tub 2 when necessary.

  That is, at the time of washing, the detergent is dissolved in the detergent charging case 8 by the water supplied from the water injection hose 7, flows through the flexible hose 10, and is charged into the inside from the upper part of the outer tub 2.

  The washing / drying tank 11 is rotatably installed in the outer tank 2. The washing / drying tank 11 having a bottomed cylindrical shape provided with an inlet on the front side is arranged so that the front end faces the front side of the outer frame housing 1 and the rear end faces the rear side of the outer frame housing 1. .

  The outer tub 2 in which the washing / drying tub 11 is placed is also arranged so as to face the front side of the outer frame housing 1 and the rear end thereof to the rear side of the outer frame housing 1.

  The outer tub 2 and the washing / drying tub 11 are placed so that their cylindrical axes are concentric, and the loading port 11a of the washing / drying tub 11 and the loading port 11b of the outer tub 2 are on the front side of the outer frame housing 1. It arrange | positions so that the insertion port 11c provided in may be faced.

  The outer tub 2 and the washing / drying tub 11 are disposed so as to be inclined so that the front end side where the charging port is provided is up and the rear end side is down. This inclination angle (angle of the axial center line with respect to the horizontal line) θ is 15 degrees. Although an inclination angle of about 15 degrees is desirable from taking out the laundry, the inclination angle θ can be selected within a range of about (5 to 30) degrees.

  The outer frame housing 1 is provided with an outer lid 12 that opens and closes the insertion port 11c. The outer lid 12 is opened and closed when the laundry is taken in and out of the washing / drying tank 11.

  The bellows 21 is attached in a watertight manner to the mouth edge of the inlet 11 c of the outer frame housing 1 and the inner edge of the inlet 11 b of the outer tub 2. The water-tightness between the outer frame casing 1 and the outer tub 2 is maintained by the bellows 21 made of this rubber (elastic body). Since the inner side of the outer lid 12 is in close contact with the bellows 21, no water leaks from the inlet 11c of the outer frame housing 1 to the outside.

  The washing / drying tank 11 has a balancer 13. The inner peripheral side of the balancer 13 is the aforementioned inlet 11a. The balancer 13 reduces vibration during dehydration. The washing / drying tank 11 has a plurality of dewatering holes 14 in the cylindrical portion. At the time of dehydration, water contained in the laundry is dehydrated into the outer tub 2 by centrifugal force through the dehydration hole 14.

  A plurality of (three) lifters 16 are provided on the inner periphery of the cylindrical portion of the washing / drying tank 11. The lifter 16 extends along the direction of the axis (rotation axis). The height of the lifter 16 is generally the same height over the longitudinal direction.

  In order to improve the movement of the laundry located on the back side, the lifter 16 can be substantially horizontal (horizontal when it is located on the lower side) with respect to the rotational axis of the washing / drying tub 11. For example, when there are three lifters 16, the lifters 16 are arranged at equal intervals of 120 degrees.

  The DC brushless motor 19 is attached and fixed to the rear outer surface of the outer tub 2. The DC brushless motor 19 is a drive source that rotationally drives the washing / drying tub 11.

  The washing / drying tank 11 has a flange 17 at the rear end which is the bottom side of the cylindrical portion. A main shaft 18 provided on the flange 17 is coupled to the rotor side of the DC brushless motor 19. Thus, the washing / drying tub 11 is rotatably supported by the outer tub 2 via the DC brushless motor 19 as a driving source.

  The drainage hose 23 of the drainage channel is provided so as to communicate with the rear lower part of the outer tub 2. In this drainage channel, two drainage valves 22A and 22B are provided so as to be vertically connected. By opening the two drainage electromagnetic valves 22 </ b> A and 22 </ b> B, the washing water and the rinsing water collected in the outer tub 2 are drained outside the machine through the drainage hose 23.

  The drainage hose 23 of the drainage channel penetrates the outer frame base 20 and the downstream end is inserted into the drainage hole of the house.

  Next, the heat pump device and related parts will be described with reference to FIGS.

  As shown in FIGS. 1, 2, and 3, the heat pump device 40 includes a compressor 41, a heat absorber 42, a radiator 43, a pressure reducing adjustment valve 44, a communication pipe 45 through which a refrigerant flows, and the like.

  The heat pump device 40 is disposed below the front end of the outer tub 2 in the outer frame housing 1.

  In the outer frame housing 1, the space below the front end of the outer tub 2 is large. This is because the outer tub 2 and the washing / drying tub 11 are arranged so as to be inclined so that the front end side where the charging port is provided is upward, compared with the case where the outer tub 2 is arranged horizontally. The space below the front end increases. The heat pump device 40 is placed using the space below the front end of the outer tank 2 that has become larger. Thereby, it is not necessary to increase the depth of the outer frame casing as in the conventional case, and a compact washing and drying machine can be provided. Since it is a washing machine with a compact size, the installation area is reduced.

As a drive motor for the compressor, a linear system employing a DC brushless motor using a rare earth magnet made of neodymium magnet was used.

  Thereby, the whole size of the heat pump device can be made compact. In addition, the linear system was able to provide an efficient compressor with low noise and vibration.

  The configuration of the heat pump apparatus will be described in more detail.

  The heat pump device 40 includes an outer frame case 50, a heat absorber 42 installed in the outer frame case, a radiator 43 positioned below the heat absorber 42, and a lint collecting member 51 positioned above the heat absorber 42. And a compressor 41 (not shown in FIG. 3) located on the right side of the heat absorber 42 and the heat radiator 43. A ventilated condensed water guide 53 is provided between the radiator 43 and the heat absorber 42.

  The heat pump device 40 further includes an inlet pipe 54 into which drying air flows provided on the upper side of the outer frame case 50, and an outlet pipe 55 through which drying air flows on the lower side of the outer frame case 50.

  Further, a condensed water storage tank 52 having a condensed water outlet 56 provided at the center bottom is provided below the outer frame case 50 of the heat pump device 40.

  The lint collection member 51 includes a frame 51a and a lint collection net 51b stretched on the frame 51a. The drying air that has flowed into the outer frame case 50 from the inlet pipe 54 passes through the lint collection net 51b, flows to the radiator 43 through the heat absorber 42, and heat exchange is performed.

  When the drying air passes through the lint collection net 51b, the lint contained in the drying air is removed. Since the drying air is filtered, lint does not adhere to the heat absorber 42 and the radiator 43, and heat exchange between the heat absorber 42 and the radiator 43 is performed well.

  The lint collecting member 51 is detachable so that it can be taken in and out from the front side of the outer frame case 50 so that the collected lint can be cleaned. The heat pump device 40 is placed such that the front side of the outer frame case 50 is the front side of the outer frame casing 1.

  Since the lint collecting member 51 can be attached / detached in front of the washing / drying machine, the attachment / detachment is easy and the cleaning is easy. When the handle 51c is provided on the frame 51a of the lint collecting member 51, the handleability is further improved.

  The ventilated condensed water guide 53 guides the drying air that has passed through the heat absorber 42 between the radiator 43 and the heat absorber 42 to the radiator 43. The ventilated condensed water guide 53 has an inclined portion 53a and a hanging portion 53b.

  Since the inclined portion 53a and the hanging portion 53b cover the heat sink 43 from the upper side, the condensed water that is generated and dropped in the heat absorber 42 travels through the ventilation condensed water guide 53 and falls to the condensed water storage tank 52.

  For this reason, the condensed water which generate | occur | produced in the heat absorber 42 does not touch the radiator 43, and the heating of the drying air by the radiator 43 is performed favorably. Condensed water comes into contact with the radiator 43 to become steam and does not contain drying air, so that drying air suitable for high-temperature drying can be made.

  Moreover, since the heat pump device 40 has a configuration in which the radiator 43, the heat absorber 42, and the lint collecting member 51 are stacked one above the other, the length is high and the depth is small. As described above, since the outer tank 2 is inclined and a large space can be formed below the front end of the outer tank 2, the heat pump device 40 having a high length can be arranged. Moreover, since the depth of the heat pump device 40 is small, there is no interference (contact) with the inclined outer tub 2.

  In addition, the heat absorber and radiator will be described in detail.

  The heat absorber 42 includes a heat absorption tube 60 that flows around the refrigerant, and a number of heat absorption fins 61 that transmit heat of the heat absorption tube 60 to the drying air. A large number of heat radiation fins 61 are arranged so as to be stacked with gaps therebetween.

  The radiator 43 includes a heat radiating pipe 70 that flows so that the refrigerant circulates, and a large number of heat radiating fins 71 that transmit heat of the heat radiating pipe 70 to the drying air. A large number of heat radiation fins 71 are arranged so as to be stacked with gaps therebetween.

As shown in FIGS. 1, 2, and 3, the inlet pipe 54 of the heat pump device 40 is provided with a suction circulation pipe 81 (drying air circulation path) in a blower fan unit 80 provided on the rear side of the outer tub 2. Is communicated via. The suction circulation pipe 81 is provided with a bellows hose 82 on the inlet pipe 54 side. The bellows hose 82 absorbs vibration from the outer tub 2 side and is not transmitted to the heat pump device 40.

  The blower fan unit 80 has a blower fan 83 inside. By the blower fan 83, the drying air in the outer tub 2 is blown to the heat pump device 40 through the suction circulation pipe 81 (drying air circulation path).

  The outlet pipe 55 of the heat pump device 40 communicates with the front end side of the outer tub 2 via a discharge circulation pipe 84 (drying air circulation path). The discharge circulation pipe 84 is provided with a bellows hose 85 on the outlet pipe 55 side. The bellows hose 85 absorbs vibration from the outer tub 2 side and is not transmitted to the heat pump device 40.

  The drying air that has been subjected to heat exchange by the heat pump device 40 flows through the discharge circulation pipe 84 and returns to the outer tub 2.

  That is, the drying air flowing in the washing / drying tub 11 absorbs the moisture of the laundry 9, flows from the rear end side of the outer tub 2 through the suction circulation pipe 81 (drying air circulation path), and flows into the heat pump device 40. To do.

Here, the high-temperature drying air containing moisture is cooled in contact with the heat absorber 42 of the heat pump device 40, and the moisture is taken as condensed water, so that it is changed to dry air. After that, the drying air that has reached a high temperature and is in contact with the radiator 43 flows into the washing / drying tank 11 through the discharge circulation pipe 84 and the outer tub 2, and absorbs the moisture of the laundry 9. Such a circulation of drying air is repeated to dry the laundry 9.

  The condensed water storage tank, the condensed water drainage channel, and the washing water drainage channel, which are the main parts of the present invention, will be described in more detail with reference to FIGS.

  The condensed water storage tank 52 has a shallow bottom portion 52a, a peripheral flange portion 52b, and a condensate outlet 56 provided so as to communicate with a recess in the bottom portion 52a.

  The bottom side of the outer frame case 50 of the heat pump device 40 fits inside the peripheral flange portion 52b. By this fitting, the condensed water storage tank 52 is attached to the heat pump device 40.

  The condensed water drainage path includes a condensed water drainage hose 29 and an outlet 56. The upstream side of the condensed water drainage channel communicates with the bottom of the condensed water storage tank 52, and the downstream side communicates with the washing water drainage channel. More specifically, the downstream side of the drainage channel is connected between the drainage valve 22A and the drainage valve 22B.

  The pumping pump 100 is provided in the condensed water drainage channel. This pump 100 is provided with a check valve (not shown) so that it does not flow back to the condensate storage tank 52 of the heat pump device 40 when the drain valve 22A is opened and the washing water and the rinsing water in the outer tub 2 are drained. It is. Condensed water accumulated in the condensed water storage tank 52 is pumped to the outer tank 2 by the pumping pump 100 at the time of washing and rinsing.

  As shown in FIG. 1, the position (H1) of the bottom of the heat pump device 40 is higher than the position (H2) of the drain electromagnetic valve 22B. The heat pump device 40 is supported by a support leg 26 provided on the outer frame base 20 and raised to the bottom.

  Thereby, when the drainage electromagnetic valve 22B is opened, the condensed water of the heat pump device 40 is drained outside the apparatus through the drainage hose 23 (drainage path) without collecting in the condensed water drainage path.

  The reason why the heat pump device 40 can be raised is that the lower part of the front end of the outer tub 2 is formed in a large space in the vertical direction by the inclined arrangement of the outer tub 2 as described above.

  The drain electromagnetic valve 22A is closed during the washing operation. Washing water is drained by opening the drain electromagnetic valve 22A and the drain electromagnetic valve 22B.

  During the drying operation, the drain electromagnetic valve 22A and the drain electromagnetic valve 22B are closed. The condensed water generated by the drying operation is accumulated in the condensed water storage tank 52 and the condensed water drainage channel.

This accumulated water is used for the next washing operation. The drainage electromagnetic valve 22 </ b> A is opened and the pumping pump 100 is operated to move the drainage electromagnetic valve 22 </ b> A into the outer tub 2. When all the water has been transferred, the drainage electromagnetic valve 22A is closed, and the deficient water is supplemented with tap water for washing.

  In this way, tap water can be saved by utilizing the condensed water generated in the drying operation for the next washing.

  Another embodiment relating to the condensed water storage tank and the condensed water drainage channel will be described with reference to FIGS.

  The condensed water storage tank 700 has a bottom portion 700a, a peripheral wall portion 700b, a plurality of support ribs 700c extending vertically on the inner surface of the peripheral wall portion 700b, and an outlet 700d provided in the bottom portion 700a.

  The heat pump device 40 is placed with the bottom side of the outer frame case 50 placed on the support rib 700d. The flange 50e of the outer frame case 50 to be joined and the flange 700f of the condensed water storage tank 700 are screwed with screws 710.

  The outlet d communicates with the condensed water drain hose 29 via the trap 720. A check valve 730 is provided at the outflow end of the trap 720. The condensed water drainage path includes an outlet 700 d, a trap 720, and a condensed water drainage hose 29.

  In the trap 720, the track water 721 is accumulated. The odor of the sewer that is transmitted to the washing water drainage and the condensed water drainage is blocked by the truck water 721 of the trap 720, so the washing dryer does not have the sewage smell.

  Since the trap 720 has the check valve 730, even if the washing water flows backward through the condensed water drainage channel, the trap 720 is stopped at the check valve 730 and the inflow into the condensed water storage tank 700 is suppressed.

  The condensed water storage tank 700 of this embodiment has a larger volume of condensed water than that of the previous embodiment (FIG. 3).

That is, in the condensed water storage tank 700, the bottom side of the heat pump device 40 is placed on the support rib 700d, so that a large space is secured between the bottom side of the heat pump device 40 and the bottom portion 700a. It will be. Compared to the embodiment shown in FIG. 3, a large amount of condensed water is accumulated, so that about 17 L of condensed water generated in one drying operation can be stored well.

  Since the water level accumulated in the condensate water storage tank 700 does not rise too much and gets wet with the radiator, the drying performance is not impaired.

  The amount of water required for washing is about 25L. More than half of the water is saved.

  Next, the operation process of the drum type washing and drying machine will be described with reference to FIG.

  In this operation process, the dirt adhering to the laundry 9 is removed, the detergent is rinsed off by rinsing, and the water contained in the laundry 9 is dehydrated from the dewatering hole 14 by centrifugal force by the rotation of the washing drying tank 11. It is a block diagram which shows the general automatic washing course which performs draining those water | moisture contents automatically.

  First, water supply 500 is performed by operating the water supply electromagnetic valve 6. Water is supplied up to a water supply amount 30 shown in FIG.

  Prior to this water supply 500, the condensed water collected by the previous washing and drying is supplied to the outer tub 2 by the operation of the pumping pump 100. Tap water is saved by the amount of this condensed water.

  In the washing 501, when water necessary for washing is supplied into the outer tub 2, the DC brushless motor 19 rotates to drive and rotate the washing / drying tub 11.

  At this time, the rotation speed of the washing / drying tub 11 is about 40 to 50 rotations per minute, and the left and right rotations are performed for several minutes with the pause, while the laundry is being lifted up by the lifter 16 in the washing / drying tub 11. Washed by tapping. During this washing operation, the washing water is heated by the heat radiation to the radiator 43 and the washing is promoted.

  When the washing 501 is completed, the washing water containing dirt flowing out from the laundry is transferred to the drainage 502 for discharging the washing water to the outside of the washing / drying machine.

  After the drainage is completed, the process proceeds to dehydration 503 for dehydrating the detergent contained in the laundry. In the dehydration 503, the water contained in the laundry is dehydrated from the plurality of dehydration holes 14 provided on the inner wall of the laundry drying tub 11 by centrifugal force by rotating the laundry drying tub 11 at high speed.

  When the dehydration 503 is completed, the detergent contained in the laundry is rinsed and the process proceeds to the rinse 505.

  Before entering the operation of the rinse 505, necessary fresh water is supplied into the outer tub 2 in the water supply 504 for supplying fresh water in the same manner as the washing 501.

  In general, about 30 L of fresh water necessary for rinsing is supplied as in washing.

  When a specified amount of fresh water is supplied, the process automatically proceeds to the rinse 505, and the washing / drying tub 11 rotates while being reversed at a low speed in the same manner as the washing 501 to remove the detergent contained in the laundry.

  Drainage 506 after the completion of rinsing 506-Dehydration 507-Rinse (2) 508-Drainage 509 is performed in the same manner as described above, and finally, the process proceeds to final dehydration 510 where water contained in the laundry is sufficiently dehydrated.

  The dehydration time of the final dehydration 510 is generally 5 minutes or longer, and the laundry drying tank 11 is rotated at a high speed to remove moisture from the laundry. The dehydration rate at this time reaches 60 to 65%.

  In the case of a drum type washing / drying machine in which a heat pump device is provided in the drum type washing / drying machine and automatically proceeds from washing to drying, the process automatically proceeds to the drying step 511 after the final dehydration 510 is completed. Transition.

  In the drying step 511, after the moisture of the laundry is sufficiently removed in the dehydration step, the laundry drying is performed while blowing dry air of hot air heat-exchanged by the radiator 43 by the heat pump device described in FIG. The tank 11 is reversed or rotated in one direction at a speed of about 50 revolutions per minute to remove moisture from the laundry and dry it.

  In the drying step 511, the laundry is dried. In the washing / drying tank 11, the moisture of the laundry is absorbed by the drying air, and the moisture is taken as condensed water from the drying air sucked by the blower fan 83 and sent to the heat absorber 42.

  The dew condensation water (condensate) taken is stored in a condensate storage tank. When the drain electromagnetic valve 22B is opened, the dewed condensed water (condensed water) is drained through the condensed water drain hose 29.

  The dehumidified drying air flows through the discharge circulation pipe 84 (drying air circulation path), and is sent into the outer tub 2 and further into the washing / drying tub 11.

  The drying air heats the washing / drying tub 11 and the outer tub 2 to promote the drying of the laundry. After completion of drying, the process automatically proceeds to end 512 to end the washing / drying course.

  Next, the driving of the drum type washer / dryer will be described with reference to the circuit block diagram of FIG.

  The power source 600 is connected to AC 100 V 50/60 Hz, and first the power switch 601 is turned on.

The energized power source is converted from an AC power source to a high-voltage DC power source by a rectifier circuit 603 that is a driving power source of the DC brushless motor 19 through a filter circuit 602 that cuts power line noise and aerial radio noise. This is supplied to a DC inverter drive circuit 604 that is a motor drive circuit.

  The DC inverter drive circuit 604 is energized by an IGPT element circuit that supplies power at an electrical angle of 120 degrees or 180 degrees according to a control command of the microcomputer 609 to each phase coil of the DC brushless motor U phase 605, V phase 607, and W phase 608. Operation is controlled.

  The rotation control of the DC brushless motor 19 is based on the rotation of a rotor (not shown) having a plurality of magnets, and a signal from an IC Hall element 606 fixedly installed on the outer periphery of the DC brushless motor 19 is sent to the microcomputer 609. The rotational speed of the washing / drying tub 11 is adjusted by controlling the rotational speed of the intake.

  In addition, fresh water necessary for rinsing to remove dirt and detergent adhering to the laundry at the time of washing is energized and supplied to the water supply electromagnetic valve 6 connected to the drive circuit unit 610 according to a command from the microcomputer 609. When draining, the drain electromagnetic valves 22A and 22B are opened, and the dirty water is drained outside the washing and drying machine.

Further, during drying, operation control of the compressor 41 of the heat pump device, the pressure reducing adjustment valve 44, and the blower fan 83 is performed. The condensed water generated by the heat pump device is stored in the condensed water storage tank by closing the drainage electromagnetic valves 22A and 22B.

  The accumulated condensed water is moved to the outer tub 2 by operating the pumping pump 100 and used for the next washing. The timing of transferring the condensed water can be performed when starting the next washing or in advance.

The longitudinal cross-sectional view of the washing-drying machine is related with the Example of this invention. It is an internal enlarged view of the washing-drying machine in the drying operation process according to the embodiment of the present invention. 1 is a perspective view of a heat pump apparatus according to an embodiment of the present invention, partially broken away. It is related with the other Example of this invention, and is a front view which shows another heat pump apparatus and a condensed water storage tank. It is a top view which concerns on the other Example of this invention, and shows a condensed water storage tank. It is a figure which concerns on the Example of this invention, and shows the driving | operation process of a washing dryer. FIG. 6 is a circuit block diagram according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer frame housing | casing, 2 ... Cylindrical outer tank, 11 ... Washing-drying tank, 40 ... Heat pump apparatus,
41 ... Compressor, 42 ... Heat absorber, 43 ... Radiator, 52 ... Condensate storage tank.

Claims (1)

A heat pump device comprising a cylindrical outer tub provided in an outer frame housing, a cylindrical laundry drying tub rotatably provided in the outer tub for storing laundry, a compressor, a radiator, and a heat absorber. In a washing and drying machine having
A condensate water storage tank is provided at the bottom of the heat pump device to store condensed water generated by condensation of the heat absorber .
A drainage channel provided to communicate with the bottom of the outer tub,
Two drainage solenoid valves connected in series to the drainage channel;
A condensed water drainage channel whose upstream side is communicated with the bottom of the condensed water storage tank and whose downstream side is communicated between the two drainage electromagnetic valves;
A water pump provided in the condensate drainage channel;
When draining the water in the outer tub, open the two drainage solenoid valves,
When the water stored in the condensed water storage tank is transferred to the outer tank, the pump is operated with the upstream drain electromagnetic valve opened and the downstream drain electromagnetic valve closed. A washing dryer characterized by that.

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