JP4896503B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a laundry dryer for drying laundry using a heat pump.

  As this type of washing and drying machine, for example, a washing and drying machine 101 shown in Patent Document 1 includes a heat pump (refrigeration cycle) 105 including a compressor 102, a condenser 103, an evaporator 104, and the like, as shown in FIG. Used to dry laundry. Since the heat pump 105 is heavy, the heat pump 105 is disposed at the bottom of the washing / drying machine 101, and also includes an air inlet 107 for sucking air into the water tank 106 and an air outlet 108 for exhausting air inside the water tank 106. It is communicated to. Then, after the air is circulated by the blower fan 109, the air heated by the condenser 103 serving as a heating source is sucked into the water tank 106 from the air inlet 107 and dehydrates the laundry in the water tank 106. The gas is exhausted from the exhaust port 108. The air exhausted from the exhaust port 108 is cooled and dehumidified by the evaporator 104 as a cooling source, heated again by the condenser 103, and sucked into the water tank 106.

In the washing / drying machine 101 having such a configuration, it is necessary to prevent bubbles generated in the washing water during washing from flowing into the heat pump 105 from the air inlet 107 and the air outlet 108 for allowing air to pass through. For example, the one disclosed in Patent Document 1 is configured such that bubbles are less likely to enter the heat pump 105 by providing the intake port 107 and the exhaust port 108 at positions as high as possible from the level of the washing water during washing. It has become.
JP 2004-135715 A

  However, with the above-described configuration, although it is possible to prevent bubbles from entering the heat pump 105 to some extent, the warm air sucked into the water tank 106 from the air inlet 107 is linearly directed upward in the water tank 106 toward the air outlet 108. As a result, the hot air does not easily reach the entire water tank 106. As a result, there is a problem that the contact between the laundry in the water tank 106 and the warm air becomes insufficient, and the drying performance is deteriorated.

  The present invention has been made in view of the above-described circumstances, and its purpose is to prevent foam generated during washing from entering the heat pump, and to appropriately wash the laundry in the water tank. It is in providing the washing-drying machine which can be dried.

The washer / dryer according to claim 1 is provided with a water tank provided at the upper part of the front part and the lower part of the rear part , and a lower part of the water tank. A heat pump that circulates so as to be cooled and heated by a condenser; and a communication passage that communicates the heat pump with the vent provided in the back surface portion of the water tank. Formed in an arc shape along the outer shape of a means for rotating a rotating drum provided on the outside and rotatably disposed inside the water tank, and a part of the communication path is provided on the back surface of the water tank. It is provided so as to pass through a position higher than the vent, and is located in a portion between the uppermost point of the communication path and the vent provided in the rear surface of the water tank. Water injection means capable of water injection are provided Having the features.

According to washing and drying machine according to claim 1, rotating the air vents and the heat pump provided in the lower part of the back surface of the aquarium the communicating passage communicating with, the interior of the water tank is provided outside of the rear portion of the aquarium A circular drum is formed along the outer shape of the means for rotating the rotatable drum, and a part of the communication passage is provided so as to pass through a position higher than the vent provided in the back surface of the water tank. In the communication path, the water injection means is provided in the communication path located between the uppermost point and the vent provided in the back surface of the water tank. Even if the generated foam enters the communication passage from the vent, the foam can be washed away to the vent side (water tank side) by water injection from the water injection means, and the foam generated during washing enters the heat pump. Can be prevented.

Further, if the communication passage and injection means configured as described above, can be washed away bubbles having entered the communicating path regardless installation position of the vents in the lower portion of the back surface portion of the tank to the vent port side. That means that no restriction that conventional must be provided vents as much as possible higher than the level of the washing water during washing so, it is possible to freely set the installation position of the vents in the lower portion of the back face of the water tank . As a result, the position of the vents can be determined and installed so that the air flow in the aquarium can efficiently contact the laundry, and the laundry in the aquarium can be properly dried. Can do.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
First, in FIG. 2, a water tank 2 is elastically supported by a plurality of support devices 3 in a washing / drying machine 1. A rotating drum 4 is rotatably disposed inside the water tank 2. The rotating drum 4 has a large number of small holes 4a (only part of which are shown in the drawing) on its peripheral and rear walls, and functions as a washing tub, a dewatering tub, and a drying chamber. . A plurality of baffles 4 b (only one is shown) are provided on the inner peripheral surface of the rotating drum 4.

  In the washing / drying machine 1, the water tank 2 and the rotating drum 4, all have openings 5, 6 and 7 for putting in and out the laundry on the front surface (right side in FIG. 2), and The opening 5 and the opening 6 are connected in a watertight manner by an elastically deformable bellows 8. Further, the opening 5 of the washing / drying machine 1 is provided with a door 9 for opening and closing the opening. A drum motor 11 including an outer rotor type brushless motor provided with a rotating shaft 10 penetrating into the water tank 2 is provided outside the back surface of the water tank 2. The rotating drum 4 is supported by the rotating shaft 10 of the drum motor 11 from the back side, and is rotated by this.

  A casing 13 is supported on the bottom plate 1a of the washing / drying machine 1 via a plurality of support members 12, and a discharge port 13a and a suction port 13b are formed at the upper right and upper left ends of the casing 13, respectively. Has been. Further, a compressor 15 constituting a heat pump (refrigeration cycle) 14 is installed on the bottom plate 1a. Further, a condenser 16 and an evaporator 17 constituting the heat pump 14 are installed in the casing 13 in order from the right side to the left side. With such a configuration, the gas refrigerant compressed by the compressor 15 is condensed by being heat-exchanged by the condenser 16 and dissipated to become a liquid refrigerant. Further, the liquid refrigerant is evaporated by absorbing heat in the evaporator 17 and becomes a gaseous refrigerant. A blower fan 18 is disposed at the right end portion of the casing 13, and a dish-shaped water receiving portion 13 c is formed in a portion of the casing 13 located below the condenser 16.

  In the water tank 2, an intake port 19 is formed at the upper part of the front surface portion, and an exhaust port 20 (corresponding to a vent hole) is formed at the lower portion of the rear surface portion. The intake port 19 is connected to the discharge port 13 a of the casing 13 through an intake port side communication passage 23 including a linear duct 21 and a telescopic connection duct 22.

  Further, the exhaust port 20 is connected to the suction port 13b of the casing 13 via an exhaust port side communication path 26 (corresponding to a communication path) including an arc-shaped duct 24 formed in an arc shape and a telescopic connection duct 25. ing. As shown in FIG. 1, the arc-shaped duct 24 is attached so as to be concentric along the outer shape of the drum motor 11 on the outer side of the back surface of the water tank 2, and a part thereof is higher than the exhaust port 20. It is formed to pass through the position.

  With such a configuration, an air circulation path 27 including the casing 13, the intake port side communication path 23, the water tank 2, and the exhaust port side communication path 26 is formed, and the air in the air circulation path 27 is sent by the blower fan 18. In FIG. 2, it is circulated as indicated by arrow A → arrow B → arrow C → arrow D → arrow E.

  In the process of circulating in the air circulation path 27, the air in the air circulation path 27 is heated by the condenser 16 serving as a heating source, and then warmed into the water tank 2 through the intake port side communication path 23. Inhaled. The warm air sucked into the water tank 2 flows diagonally from the upper part to the lower part in the water tank 2 toward the exhaust port 20 and flows into the rotating drum 4 from the small holes 4 a on the peripheral side wall of the rotating drum 4. After removing moisture from the laundry being stirred in the rotary drum 4, the water is exhausted from the exhaust port 20 through the small hole 4 a on the rear wall of the rotary drum 4, and the casing 13 through the exhaust port side communication passage 26. To be sent in. The hot air sent to the casing 13 is cooled by the evaporator 17 as a cooling source and dehumidified, and then heated again by the condenser 16.

  In the washing / drying machine 1, a water supply valve 28 is disposed at the upper rear portion as shown in FIG. 2, and a detergent dispenser 29 is disposed at the upper front portion. The water inlet of the water supply valve 28 is connected to a water tap (not shown) via a water supply hose 28a. Further, the first water outlet of the water supply valve 28 is connected to the upper water inlet of the detergent feeder 29 through the washing water supply hose 28b, and the second water outlet of the water supply valve 28 is connected to the water supply hose 28c for rinsing. It is comprised so that it may be connected to the water inlet of the lower stage of the detergent thrower 29 via. The third water outlet of the water supply valve 28 is poured into a water inlet 26a formed at a portion between the uppermost point X (see FIG. 1) and the exhaust outlet 20 in the exhaust outlet side communication passage 26. It is connected via a hose 28d. With such a configuration, a water injection device 30 (corresponding to water injection means) is provided from the water supply hose 28a through the water supply valve 28 to the water injection port 26a, and the tap water supplied from the water supply valve 28 is exhausted from the water injection port 26a. Water is poured into the mouth side communication passage 26.

  In addition, the water outlet of the above-described detergent feeder 29 is connected to the water inlet 2a formed in the upper part of the water tank 2 via the washing water supply hose 29a, and the tap water supplied from the water supply valve 28 is supplied to the detergent. It is supplied into the water tank 2 through the vessel 29.

  A drain port 2 b is formed at a site behind the bottom of the water tank 2, and the drain port 2 b is connected to a drain hose 32 via a drain valve 31. A part of the drainage hose 32 is telescopic. The water receiving part 13c of the casing 13 is connected to the middle part of the drainage hose 32 via the drainage hose 33 and the check valve 34, and the water dehumidified by the evaporator 17 is the water receiving part of the casing 13. After being received at 13c, it is discharged to the drainage hose 32 via the drainage hose 33 and the check valve 34.

  An operation panel unit 35 is provided at the upper front of the washing / drying machine 1, and the operation panel unit 35 is provided with a display and various operation switches (not shown). A control circuit 36 is provided on the rear surface of the operation panel unit 35. The control circuit 36 is composed of various electronic components, mainly a microcomputer, and executes a washing operation and a drying operation subsequent to the washing operation based on operation of an operation switch of the operation panel unit 35. It has become. In the washing operation, the laundry is washed, rinsed and dehydrated by controlling the water supply valve 28, the drum motor 11 and the drain valve 31. In the drying operation, the rotary drum 4 is rotated by controlling the drum motor 11, and the heat pump 14 is operated by controlling the compressor motor (not shown) that drives the compressor 15. Drying is performed.

Next, the operation of this embodiment will be described.
When the user starts washing through the operation panel unit 35, the control circuit 36 starts the washing operation described above. In the washing operation, the control circuit 36 closes the drain valve 31 to collect washing water in the water tank 2 and rotates the rotating drum 4 via the drum motor 11. By rotating the rotating drum 4, the washing water in the rotating drum 4 is stirred together with the laundry, thereby washing the laundry. At this time, bubbles are generated in the washing water as the washing water is stirred. The bubbles may pass through the exhaust port 20 and enter the exhaust port side communication path 26. The bubble that has entered the exhaust port side communication path 26 is formed so that a part of the exhaust port side communication path 26 passes through a position higher than the exhaust port 20. It will enter while climbing towards X. In this state, when the control circuit 36 pours water into the portion between the uppermost point X of the exhaust port side communication passage 26 and the exhaust port 20 from the water injection port 26 a by the water injection device 30, the control circuit 36 enters the exhaust port side communication passage 26. The foam is washed away to the exhaust port 20 side (water tank 2 side) and returned to the water tank 2.

  When the washing operation is completed, the control circuit 36 starts the drying operation described above. In the drying operation, the control circuit 36 operates the heat pump 14 and operates the blower fan 18. Thereby, the air in the air circulation path 27 is circulated, and the laundry in the rotating drum 4 is dried. While the air in the air circulation path 27 is circulated, the air exhausted from the exhaust port 20 of the water tank 2 flows in the exhaust port side communication passage 26 in the directions of arrows C and D in FIG. Since the foam that has entered the exhaust port side communication passage 26 during the washing operation is washed out from the exhaust port side communication passage 26 into the water tank 2 by the water injection device 30 as described above, the foam generated during the washing operation is exhausted. The air circulating in the mouth side communication passage 26 is not pushed into the casing 13 (heat pump 14) by being pushed away in the directions of arrows C and D in FIG.

  As described above, according to the present embodiment, the exhaust port side communication passage 26 that communicates the exhaust port 20 of the water tank 2 and the heat pump 14 is configured so that a part of the exhaust port side communication passage 26 is more than the exhaust port 20. A water injection device 30 is provided so as to pass through a high position, and is located in a portion between the uppermost point X and the exhaust port 20 in the exhaust port side communication passage 26 and can inject water into the exhaust port side communication passage 26. Since it was set as the structure provided, even if the foam which generate | occur | produced in the wash water at the time of washing enters into the exhaust port side communication path 26 from the exhaust port 20, the said foam is poured into the exhaust port 20 side (water tank 2 side) by water injection from the water injection apparatus 30. It is possible to wash away, and it is possible to prevent bubbles generated during washing from entering the heat pump 14.

  Further, if the exhaust port side communication path 26 and the water injection device 30 are configured as described above, bubbles that have entered the exhaust port side communication path 26 are washed away to the exhaust port 20 side regardless of the installation position of the exhaust port 20. Can do. That is, there is no restriction that the exhaust port 20 must be provided at a position as high as possible above the water level of washing water during washing, and the installation position of the exhaust port 20 can be freely set. Thereby, the position of the exhaust port 20 can be determined and installed so that the flow of air in the water tank 2 can be efficiently contacted with the laundry, and the laundry in the water tank 2 can be appropriately disposed. Can be dried.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment described above, the structure in which water is injected from the water injection device 30 into the exhaust port side communication passage 26 is described. However, in the second embodiment, circulation for circulating the wash water in the water tank 2 is described. A description will be given of a configuration in which a pump 50 is provided and water is poured into the exhaust port side communication passage 26 using a part of the wash water circulated by the circulation pump 50. In the description, the description of the same parts as those described in the first embodiment will be omitted, and only different parts will be described.

  As shown in FIG. 3, a circulation pump 50 is disposed at the bottom of the washing / drying machine 1. The circulation pump 50 is connected to a suction port 2 c provided in the lower part of the water tank 2 via a first connection hose 51 and is connected to the water tank via a second connection hose 52 and a third connection hose 53. 2 is connected to a spout 2d provided in the upper part of 2. With such a configuration, a circulation path 54 is provided from the suction port 2 c of the water tank 2 through the circulation pump 50 to the jet outlet 2 d of the water tank 2.

  Further, a T-shaped branch joint 55 is provided between the second connection hose 52 and the third connection hose 53, and the water injection pipe 55 a of the branch joint 55 is connected to the exhaust port side communication passage 26. Among these, it is connected to a water injection port 26 a formed at a position between the uppermost point X and the exhaust port 20. With such a configuration, a water injection device 56 (corresponding to water injection means) is provided from the suction port 2 c of the water tank 2 to the water injection port 26 a via the circulation pump 50 and the branch joint 55. A part of the circulating washing water is poured into the exhaust port side communication passage 26 from the water injection port 26 a through the water injection pipe 55 a of the branch joint 55.

Next, the operation of the second embodiment will be described.
During the washing operation, the control circuit 36 accumulates the washing water in the water tank 2 and rotates the rotating drum 4 to wash the laundry. Further, the control circuit 36 operates the circulation pump 50 to circulate the washing water in the water tank 2 through the circulation path 54. At this time, a part of the washing water circulating in the circulation path 54 is injected into the exhaust port side communication passage 26 from the water injection port 26 a via the water injection pipe 55 a of the branch joint 55. During the washing operation, in the same manner as described in the first embodiment, when bubbles generated in the washing water enter the exhaust port side communication passage 26 from the exhaust port 20, Ascending toward the uppermost point X, the foam that has entered the exhaust port side communication passage 26 is washed away to the exhaust port 20 side (water tank 2 side) by water injection from the water injection port 26a constituting the water injection device 56. It is returned to the water tank 2.

  In the drying operation subsequent to the washing operation, the air exhausted from the exhaust port 20 of the water tank 2 passes through the exhaust port side communication passage 26 in the same manner as described in the first embodiment, and the arrows C and arrows in FIG. Although it flows in the direction D, the foam that has entered the exhaust port side communication passage 26 during the washing operation is washed away from the exhaust port side communication passage 26 into the water tank 2 by the water injection device 56 as described above. Bubbles generated during operation are not pushed into the casing 13 (heat pump 14) by being pushed away in the directions of arrows C and D in FIG. 3 together with the air circulating in the exhaust port side communication passage 26.

  As described above, according to the second embodiment, the water injection device 56 is configured to inject the washing water circulated by the circulation pump 50 into the exhaust port side communication passage 26. There is no need to replenish and use water, and water resources can be saved.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In the third embodiment, a bubble sensor 60 (corresponding to a bubble detection means) that detects bubbles entering the exhaust port side communication passage 26 is provided, and the bubble sensor 60 enters the bubbles into the exhaust port side communication passage 26. A configuration in which water is poured into the exhaust port side communication passage 26 when the above is detected will be described. In this case as well, the description of the same parts as those described in the first embodiment will be omitted, and only different parts will be described.

  A foam sensor 60 is disposed in the upper part of the washing / drying machine 1. The bubble sensor 60 is configured to detect bubbles in the exhaust port side communication passage 26 by air pressure transmitted through an air tube 62 from an air trap 61 provided at the back of the exhaust port side communication passage 26 and above the exhaust port 20. Is to be detected. The bubble sensor 60 reacts when bubbles enter the air trap 61 (exhaust port side communication passage 26). Specifically, the bubble sensor 60 is about several hundred [Pa] ( Reference value: It can detect a minute change in air pressure of several tens [mmH2O]), compared to the case of using a water level sensor (not shown) that detects the water level of the washing water in the aquarium 2. The sensitivity is about 10 times higher.

  When the bubble sensor 60 detects that bubbles have entered the exhaust port side communication passage 26, the control circuit 36 causes the water injection device 30 to connect the uppermost point X and the exhaust port of the exhaust port side communication passage 26 from the water injection port 26a. Water is poured into a portion between 20 and 20.

Next, the operation of the third embodiment will be described.
During the washing operation, the control circuit 36 accumulates the washing water in the water tank 2 and rotates the rotating drum 4 to wash the laundry. Then, in the same manner as described in the first embodiment, when bubbles generated in the washing water enter the exhaust port side communication passage 26 from the exhaust port 20, the uppermost point X of the exhaust port side communication passage 26 is obtained. Will rise towards the. At this time, some of the bubbles that have entered the exhaust port side communication passage 26 enter the air trap 61. When the bubble sensor 60 detects that bubbles have entered the exhaust port side communication passage 26, the control circuit 36 causes the water injection device 30 to exhaust the exhaust gas from the water injection port 26 a to the uppermost point X of the exhaust port side communication passage 26. Water is poured into a portion between the mouth 20. And by this water injection, the foam which entered into the exhaust port side communication passage 26 is washed away to the exhaust port 20 side (water tank 2 side) and returned to the water tank 2.

  As described above, according to the third embodiment, when the bubble sensor 60 detects the entry of bubbles into the exhaust port side communication passage 26, the water injection device 30 supplies water into the exhaust port side communication passage 26. Therefore, water can be injected only when bubbles enter the exhaust port side communication passage 26 and the bubbles need to be washed away, and water resources can be further saved.

( Reference embodiment)
Next, a reference embodiment of the present invention will be described with reference to FIGS. In the first embodiment described above, the structure in which water is injected from the water injection device 30 only into the exhaust port side communication passage 26 is described. However, in this reference embodiment, not only the exhaust port side communication passage 26 but also the intake port side communication channel is described. The passage 70 is also configured to pour water from the water pouring device 30. In this case as well, the description of the same parts as those described in the first embodiment will be omitted, and only different parts will be described.

As shown in FIG. 5, in this reference embodiment, the intake port 19 (corresponding to a vent port) is formed on the left side of the front surface portion in the water tank 2 and is formed at a position that is substantially the same height as the exhaust port 20. . The intake port 19 is connected to the discharge port 13a of the casing 13 via an intake port side communication path 70 (corresponding to a communication path) composed of an arcuate duct 71 formed in an arc shape and a telescopic connection duct 22. . The arc-shaped duct 71 is attached so as to be concentric along the outer periphery of the opening 6 on the outer side of the front surface portion of the water tank 2, and a part of the arc-shaped duct 71 passes through a position higher than the intake port 19. ing. The warm air heated by the condenser 16 is circulated in the direction of the arrow F and arrow G in FIG. 5 through the intake port side communication passage 70 and is sucked into the water tank 2 from the intake port 19. Then, the warm air sucked into the water tank 2 flows diagonally from the left to the right in the water tank 2 toward the exhaust port 20, deprives moisture from the laundry in the rotating drum 4, and then the exhaust port. 20 is exhausted.

  In the water injection device 30, the third water outlet of the water supply valve 28 is located in a portion between the uppermost point Y and the air inlet 19 in the air inlet side communication passage 70 as shown in FIGS. 5 and 6. A water injection hose 28e is connected to the formed water injection port 70a. And the tap water supplied from the water supply valve 28 is poured into the inlet side communication passage 70 from the water inlet 70a.

Next, the operation of the reference embodiment will be described.
In the washing operation, some of the foam generated in the washing water passes through the intake port 19 and enters the intake port side communication path 70. The bubble that has entered the intake side communication passage 70 is formed so that a part of the intake side communication passage 70 passes through a position higher than the intake port 19. It may enter while climbing toward Y. In this state, when the control circuit 36 pours water into the portion between the uppermost point Y of the intake port side communication passage 70 and the intake port 19 from the water injection port 70 a by the water injection device 30, the control circuit 36 enters the intake port side communication passage 70. The foam is washed away to the intake port 19 side (water tank 2 side) and returned to the water tank 2.

In this reference embodiment, as shown in FIG. 7, the exhaust port side communication passage 26 is configured in the same manner as that described in the first embodiment, and the exhaust port 20 communicates with the exhaust port side communication passage. The foam that has entered 26 is washed away to the exhaust port side (water tank 2 side) by water injection from the water injection device 30 (water injection port 26a).

  In the drying operation following the washing operation, the air heated by the condenser 16 flows in the intake port side communication passage 70 in the directions of arrows F and G in FIG. As described above, since the foam that has entered 70 is washed away from the intake side communication passage 70 into the water tank 2 by the water injection device 30, the foam generated during the washing operation circulates in the intake side communication passage 70. The air is not swept away in the direction of arrow F and arrow G in FIG.

As described above, according to the reference embodiment, not only the exhaust port side communication path 26 but also the intake port side communication path 70 is provided so that a part thereof passes through a position higher than the intake port 19. Since the water injection device 30 capable of pouring water is provided in the intake-side communication path 70 located in the portion between the uppermost point Y and the intake port 19 in the intake-side communication path 70, washing water at the time of washing Even if the bubbles generated at the inlet port enter the inlet side communication passage 70 from the inlet port 19 as well as the exhaust port 20, the bubbles can be washed away to the inlet port 19 side (water tank 2 side) by water injection from the water injection device 30. Further, it is possible to prevent foam generated during washing from entering the heat pump 14 from the intake port 19 side.

Moreover, the foam remaining in the inlet side communication path 70 does not enter the water tank 2 during the drying operation, and it is possible to prevent the foam from adhering to the laundry.
Further, by configuring the intake port side communication passage 70 and the water injection device 30 as described above, not only the exhaust port 20 but also the intake port 19 can be freely installed. That is, since the installation positions of both the exhaust port 20 and the intake port 19 can be set without being restricted by the height for preventing the ingress of bubbles, the air flow in the water tank 2 is relative to the laundry. It becomes easy to comprise so that it may become a flow which contacts efficiently, and the laundry in the water tank 2 can be dried more appropriately.

(Other embodiments)
In addition, this invention is not limited to each above-mentioned embodiment, It can deform | transform or expand as follows.
In each of the above-described embodiments, the water injection from the water injection device 30 is performed during the washing operation. However, the present invention is not limited to this. For example, water may be appropriately injected during the rinsing or drying operation.

A configuration may be adopted in which a switching valve is provided in the branch joint 55 and a part of the washing water is poured into the exhaust port side communication passage 26 by switching the switching valve.
The bubble detection means is not limited to the bubble sensor 60, and may be, for example, a sensor that detects a resistance change between the electrodes.

  In each of the above-described embodiments, the structure in which the air is sucked from the front portion of the water tank 2 and is exhausted from the back surface portion is described. It may be configured to do so.

The rear view which shows the 1st Embodiment of this invention and shows the internal structure of a washing-drying machine roughly Longitudinal side view schematically showing the internal configuration of the washing and drying machine FIG. 1 equivalent diagram showing a second embodiment of the present invention FIG. 1 equivalent view showing a third embodiment of the present invention The front view which shows reference embodiment of this invention and shows the internal structure of a washing-drying machine roughly 2 equivalent diagram 1 equivalent diagram Longitudinal side view schematically showing the internal structure of a conventional washing and drying machine

Explanation of symbols

  In the drawings, 1 is a washing / drying machine, 2 is a water tank, 14 is a heat pump, 16 is a condenser, 17 is an evaporator, 19 is an air inlet (vent), 20 is an air outlet (vent), and 26 is an exhaust side. Communication passage (communication passage), 30 is a water injection device (water injection means), 50 is a circulation pump, 56 is a water injection device (water injection means), 60 is a bubble sensor (bubble detection means), and 70 is an inlet side communication passage (communication passage) ).

Claims (3)

A water tank provided with vents for allowing air to pass through at the upper part of the front part and the lower part of the rear part;
A heat pump that is arranged at the bottom of the water tank and circulates so that air is cooled by an evaporator and heated by a condenser;
A communication path communicating the vent and the heat pump provided on the back surface of the water tank;
The communication path is
It is formed in an arc shape along the outer shape of the means for rotating the rotating drum that is provided outside the rear portion of the water tank and is rotatably arranged inside the water tank,
The together with a part of the communication passage is provided so as to pass a position higher than the ventilation port provided in the rear portion of the tub, provided on the back portion of the the uppermost point aquarium of the communication passage A washing / drying machine characterized in that a water injection means capable of water injection is provided in the communication path located at a portion between the ventilation holes. A circulation pump for circulating the wash water in the water tank,
The water injection means is
The washing / drying machine according to claim 1, wherein washing water circulated by the circulation pump is poured into the communication path. Comprising foam detection means for detecting foam that has entered the communication path;
The water injection means is
The washing / drying machine according to claim 1 or 2, wherein water is poured into the communication path when the foam detection means detects the entry of foam into the communication path.

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