WO2015118585A1

WO2015118585A1 - Washer/dryer

Info

Publication number: WO2015118585A1
Application number: PCT/JP2014/005584
Authority: WO
Inventors: 雅弘河合; 田原　己紀夫
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2014-02-07
Filing date: 2014-11-06
Publication date: 2015-08-13
Also published as: DE112014006346T5; JP2015146933A; CN105960488A; CN105960488B; JP6191013B2

Abstract

A washer/dryer comprising: an outer tank (2) elastically supported inside a housing (1); a rotating drum (3) rotatably positioned inside the outer tank (2); a main wastewater passage (8) for discharging water inside the outer tank (2) to outside the housing (1); a wastewater valve (7) for opening and closing the main wastewater passage (8); a moisture-removing unit (14) for removing moisture from air to be used for drying which is supplied to inside the rotating drum (3); a heating unit (15) for heating the air from which moisture was removed by the moisture-removing unit (14); a case (16) for accommodating the moisture-removing unit (14) and the heating unit (15); a water-spraying unit (18) for removing foreign matter adhered to the moisture-removing unit (14); and a heat-exchanger wastewater passage (20) and a wastewater pump (21) for discharging, from the case (16), water sprayed from the water-spraying unit (18). The heat-exchanger wastewater passage (20) is provided with a second trap (22) for storing water discharged from the case (16), and a rising section (23) that is higher than the washing-water level during washing.

Description

Washing and drying machine

The present invention relates to a washing / drying machine capable of washing and drying clothes and the like.

A conventional washing machine having a drying function, a so-called washing and drying machine, can continuously dry laundry such as washed clothes in the same tank.

In the drying process, the laundry is stirred in the rotating drum and air for drying is blown into the rotating drum. Drying air that has been wet in contact with wet clothing is cooled and dehumidified by the dehumidifying means, and then heated by the heating means to circulate as dry hot air. In this way, laundry such as clothes is dried.

As the laundry is dried, lint such as lint is easily generated from clothing. The lint separated from the clothing or the like is mixed into the drying air and adheres to a blower, a heat exchanger, or the like provided in the circulation air passage, and causes a decrease in the drying function. For this reason, a lint filter for collecting lint such as lint from drying air is provided in the circulation air passage. However, it is difficult to completely remove lint from the drying air that passes through the lint filter because the drying air that flows through the circulation air passage needs to secure a certain air flow rate. When the lint that has passed through the lint filter adheres to the heat exchanger, the heat exchange efficiency decreases. For this reason, it is considered to remove lint attached to the heat exchanger (see, for example, Patent Document 1).

FIG. 4 is a schematic diagram showing the internal configuration of a conventional washing / drying machine. In FIG. 4, a ventilation means 52 is provided in the circulation air passage 51, and a lint filter 54 is provided in the circulation air passage 51 upstream of the evaporator 53. The drying air that has exited from the rotary drum 55 to the circulation air passage 51 passes through the lint filter 54 and circulates to the outer tank 57 through the evaporator 53 and the condenser 56. Water circulation means 58 for washing the surfaces of the evaporator 53 and the condenser 56 is provided in the circulation air passage 51, and foreign matters such as lint and hair attached to the evaporator 53 and the like are washed away.

Foreign matters such as lint and hair washed away by the sprinkling means 58 and washing water are discharged from the opened drain valve 59 to the outside of the machine through the drainage path 60. Condensed water generated in the evaporator 53 in the drying process is also discharged out of the apparatus through the drainage path 60 together with foreign matter adhering to the evaporator 53 and the like.

In the conventional washing and drying machine as shown in FIG. 4, the washing water flowing from the sprinkling means 58 and the condensed water generated in the evaporator 53 in the drying process are drained to the drainage path 60. As described above, the path through which the washing water flowing from the sprinkling means 58 and the condensed water generated in the evaporator 53 passes and the path through which the washing water discharged from the outer tub 57 passes are merged in the drainage path 60. During the washing process, the washing water enters the heat exchanger housing 61 where the evaporator 53 and the like are provided, and the dirt of the washing water adheres to the evaporator 53 and the like.

Further, in the drying process, when the drain valve 59 is opened to discharge the condensed water generated in the evaporator 53, the outer tub 57 and the heat exchanger housing 61 communicate with each other. It flows into the heat exchanger accommodating part 61 through the path | route 60, and discharge | emission of condensed water is prevented.

In order to solve such a problem, it is conceivable to provide an open / close mechanism such as a check valve in the drainage path of the condensed water. However, since the water from which the heat exchanger has been washed contains lint, hair, and the like, these may adhere to and accumulate on the opening / closing mechanism and block the drainage path, making it difficult to drain smoothly.

JP 2008-86421 A

The present invention provides a washing / drying machine that prevents the flow of washing water or drying air from flowing back to the heat exchanger housing without providing an opening / closing mechanism such as a backflow prevention valve in the conventional configuration described above. That is, the present invention includes an outer tub elastically supported in a casing, a rotating drum rotatably disposed in the outer tub, a main drainage channel for discharging water in the outer tub to the outside of the casing, and a main drainage channel A drain valve that opens and closes the dehumidifier, a dehumidifying unit that dehumidifies the drying air supplied into the rotating drum, a heating unit that heats the air dehumidified by the dehumidifying unit, and a heat exchanger housing unit that houses the dehumidifying unit and the heating unit And a watering part for removing foreign matter adhering to the dehumidifying part, and a heat exchanger drainage channel and a drainage pump for discharging water discharged from the watering unit from the heat exchanger housing unit, to the heat exchanger drainage channel, A trap that collects water discharged from the heat exchanger housing, and a riser that is higher than the highest water level at the time of washing (water level in the outer tub in the washing operation including washing, rinsing, and dehydration processes) It is provided. With such a configuration, since an open / close mechanism such as a backflow prevention valve is not used, the heat exchanger drainage channel can be prevented from being clogged. In addition, it is possible to prevent the airflow of washing water or drying air from flowing backward to the heat exchanger housing.

FIG. 1 is a schematic diagram showing an internal configuration of the washing / drying machine according to Embodiment 1 of the present invention. FIG. 2 is a schematic diagram showing the internal configuration of the washing / drying machine according to Embodiment 2 of the present invention. FIG. 3 is a schematic diagram showing the internal configuration of the washing / drying machine according to Embodiment 3 of the present invention. FIG. 4 is a schematic view showing an internal configuration of a conventional washing / drying machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic diagram showing an internal configuration of a washing / drying machine 100 according to Embodiment 1 of the present invention. In FIG. 1, an outer tub 2 is elastically supported by a damper (not shown) in a housing 1. A rotating drum 3 formed in a cylindrical shape with a bottom is rotatably provided in the outer tub 2, and the axial center direction of the rotating drum 3 is disposed in a substantially horizontal direction (including the horizontal direction). ing. The outer tub 2 is disposed along the periphery of the rotating drum 3.

On the front side of the outer tub 2, there is formed a clothing input port 4 that leads to the opening end of the rotary drum 3, and the laundry 5 can be taken in and out of the rotary drum 3 through the clothing input port 4. A driving device 6 such as a motor is provided on the back side of the outer tub 2. The driving device 6 rotates the rotating drum 3 in the forward direction and the reverse direction to perform a washing operation and a drying operation.

In the washing process, the rotary drum 3 is driven to rotate by the drive device 6, and the laundry 5 is lifted in the rotational direction by a baffle (not shown) provided on the inner peripheral surface of the rotary drum 3, and is moved upward in the rotary drum 3. Is dropped onto the water surface. The laundry 5 is beaten and washed by the impact at the time of dropping, and the dirt attached to the laundry 5 is removed.

When the set predetermined time has elapsed, the drain valve 7 provided in the main drainage channel 8 is opened, and the washing water in the outer tub 2 is discharged out of the housing 1 through the main drainage channel 8. The main drainage channel 8 is provided with a first trap 9 so that the smell of sewage does not enter the casing 1 through the main drainage channel 8. Note that the first trap 9 may not be provided.

Similarly, in the rinsing step executed after the washing step, the dirty washing water remaining on the laundry 5 by the wash water newly supplied to the laundry 5 in the rotary drum 3 that is rotationally driven. And detergent ingredients are dropped.

When the set predetermined time has elapsed, the drain valve 7 is opened, the rinse water is drained, and the dehydration process is performed. The outer tub 2 is provided with an overflow channel 10, and the overflow channel 10 is provided between the drain valve 7 and the first trap 9 in the main drain channel 8 or in the main drain channel 8. One trap 9 is connected. When the water supply amount is supplied more than the set amount due to a failure of the water supply valve 11, the wash water in the outer tub 2 is discharged out of the housing 1 through the overflow path 10. Note that the overflow path 10 may not be provided.

The rotating drum 3 is connected to a circulation air passage 12 that is a passage for air exhausted from the outer tub 2. The circulation air passage 12 is provided with a blower 13 that circulates the air exhausted from the outer tub 2.

The circulation air passage 12 includes a dehumidifying unit 14 that dehumidifies the humid air exhausted from the outer tub 2, a heating unit 15 that heats the dry air dehumidified by the dehumidifying unit 14, a dehumidifying unit 14, and a heating unit 15. A case (heat exchanger accommodating portion) 16 is provided.

The dehumidification part 14 and the heating part 15 are comprised with the heat pump apparatus. A general heat pump device includes a compressor that compresses a refrigerant, a condenser that dissipates the heat of the compressed high-temperature and high-pressure refrigerant, a throttle unit that includes a capillary tube for reducing the pressure of the high-pressure refrigerant, Then, the low-pressure refrigerant is connected to an evaporator, which takes heat from the surroundings, by a pipe line so that the refrigerant circulates. In this case, the evaporator is the dehumidifying unit 14, the condenser is the heating unit 15, and the dehumidifying unit 14 and the heating unit 15 are configured by a fin tube heat exchanger.

The drying operation is performed following the washing operation in which the washing, rinsing, and dehydration processes are sequentially performed. In the drying operation, an air flow is generated in the circulation air passage 12 by driving the air blowing unit 13. Due to this air flow, the air in the rotating drum 3 containing the laundry 5 is exhausted from the outer tub 2. The air from the outer tub 2 passes through the case 16 located on the upstream side of the blower 13. In the case 16, the air from the outer tub 2 is dehumidified in the dehumidifying unit 14 by dew condensation. Furthermore, the air dehumidified by the dehumidifying unit 14 is heated by heat exchange in the heating unit 15 and becomes dry high-temperature air.

Dry hot air is blown into the outer tub 2 by the blower 13. The high-temperature dry air blown into the outer tub 2 enters the rotary drum 3 and flows through the circulation air passage 12 through the outer tub 2 while being exposed to the laundry 5 such as clothes, and again passes through the case 16. Then, the air blower 13 is reached. The drying operation is executed by repeating the above-described circulation.

Further, the circulation air passage 12 is provided with a lint filter 17 on the upstream side with respect to the air blowing unit 13, the dehumidifying unit 14, and the heating unit 15. The lint filter 17 collects foreign matters such as lint and hair contained in the air scattered from the laundry 5 and exhausted from the outer tub 2.

However, it is difficult to completely collect foreign matter such as lint and hair with the lint filter 17, and a small amount of foreign matter passes through the lint filter 17 and adheres to the upstream surface of the dehumidifying unit 14. If clogging occurs due to the accumulation of foreign matter in the dehumidifying section 14, the drying air volume and the dehumidifying efficiency are reduced, resulting in poor drying such as reduced drying performance. In order to avoid such a problem, the foreign matter adhering to the upstream surface of the dehumidifying part 14 is washed by the watering part 18 provided on the upstream side of the dehumidifying part 14.

Water supply to the water sprinkling unit 18 is performed through the water supply path 19 by the water supply valve 11. The water discharged from the water sprinkling part 18 ishes out the foreign matter adhering to the surface of the dehumidifying part 14, keeps the dehumidifying part 14 clean, and prevents the drying performance from deteriorating. In addition, you may perform the supply of the water to the watering part 18 by water supply means, such as a pump.

The water after washing the dehumidifying part 14 is discharged out of the housing 1 by the drain pump 21 through the heat exchanger drain 20 connected to the lower part of the case 16. The heat exchanger drainage channel 20 is provided with a second trap 22 for collecting water discharged from the case 16. Thereby, in the drying operation, even when the pressure in the rotary drum 3 increases, the dry airflow flows backward from the outer tub 2 to the case 16 through the main drainage channel 8, the overflow channel 10, and the heat exchanger drainage channel 20. This can prevent dryness due to poor drainage of condensed water.

In addition, a part of the heat exchanger drainage channel 20 is raised upward, and the washing water level at the time of washing (the water level in the outer tub in the washing operation including the steps of washing, rinsing and dehydration) is set higher than the highest water level. By providing the start-up unit 23, it is possible to prevent the washing water from flowing back to the case 16 during drainage in the washing operation.

As described above, the washing / drying machine 100 according to the present embodiment includes the outer tub 2 elastically supported in the housing 1, the rotating drum 3 rotatably disposed in the outer tub 2, and the outer tub 2. A main drainage channel 8 that discharges the water inside the housing 1, a drainage valve 7 that opens and closes the main drainage channel 8, a dehumidifying unit 14 that dehumidifies drying air supplied into the rotary drum 3, and a dehumidifying unit 14 The heating unit 15 that heats the air dehumidified in the above, the case 16 that accommodates the dehumidifying unit 14 and the heating unit 15, the watering unit 18 that removes foreign matter attached to the dehumidifying unit 14, and the water discharged from the watering unit 18 The heat exchanger drainage channel 20 and the drainage pump 21 are provided. Further, the heat exchanger drainage channel 20 is provided with a second trap 22 that is a trap for collecting water discharged from the case 16 and a rising portion 23 that is higher than the highest water level at the time of washing. With such a configuration, since an opening / closing mechanism such as a backflow prevention valve is not used, clogging of the heat exchanger drainage channel 20 is unlikely to occur, and a case 16 in which the washing water and dry air flow accommodate the dehumidifying unit 14 and the heating unit 15. It is possible to prevent backflow.

In addition, the dehumidification part 14 can be comprised not only with the evaporator of a heat pump apparatus but with a water-cooled or air-cooled heat exchanger.

1, the heat exchanger drainage channel 20 is connected to the main drainage channel 8 on the downstream side of the drainage valve 7. However, the heat exchanger drainage channel 20 does not necessarily have to be connected to the main drainage channel 8 on the downstream side of the drainage valve 7. Even when the heat exchanger drainage channel 20 is connected to the main drainage channel 8 on the upstream side of the drainage valve 7, as described above, it is a trap that collects water discharged from the case 16 in the heat exchanger drainage channel 20. With the configuration in which the second trap 22 and the rising portion 23 that is higher than the highest water level during washing are provided, it is possible to prevent the washing water and the air flow of drying air from flowing back to the case 16. As shown in FIG. 1, when the heat exchanger drainage channel 20 is connected to the main drainage channel 8 on the downstream side of the drainage valve 7, the washing water discharged from the outer tub 2 is the second in the washing operation. Intrusion into the trap 22 can be prevented more reliably. In addition, foreign substances such as undissolved detergent can be prevented from accumulating in the second trap 22, and clogging of drainage can be more reliably prevented.

(Embodiment 2)
FIG. 2 is a schematic diagram showing an internal configuration of the washing / drying machine 200 according to Embodiment 2 of the present invention. In the present embodiment, in the main drainage channel 8, a first trap 9 that stores water discharged to the outside of the washing / drying machine 200 is provided downstream of the drainage valve 7. The heat exchanger drainage channel 20 is connected to the first trap 9, and the first trap 9 and the second trap 22 constitute an integral trap. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the detailed description of the first embodiment is used.

With the above configuration, the second trap 22 can also be used as the first trap 9, and the backflow of the washing water discharged from the outer tub 2 and the dry airflow to the case 16 can be prevented with a simple configuration. it can.

(Embodiment 3)
FIG. 3 is a schematic diagram showing an internal configuration of the washing / drying machine 300 according to Embodiment 3 of the present invention. In the present embodiment, the second trap 22 is disposed on the upstream side of the rising portion 23 in the heat exchanger drainage channel 20. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the detailed description of the first embodiment is used.

With the above configuration, since the washing water does not enter the second trap 22 even when the washing water discharged from the outer tub 2 is drained, the heat exchanger drainage channel 20 can be kept clean. The drainage clogging can be surely prevented.

The heat exchanger drainage channel 20 may be connected to the outer tub 2 or the overflow channel 10 other than the main drainage channel 8.

As described above, the washing / drying machine (100, 200, 300) of the present invention includes the outer tub 2 elastically supported in the housing 1, and the rotary drum 3 rotatably disposed in the outer tub 2. A main drainage channel 8 for discharging the water in the outer tub 2 to the outside of the housing 1, a drainage valve 7 for opening and closing the main drainage channel 8, and a dehumidifying unit 14 for dehumidifying the drying air supplied into the rotary drum 3, From the heating unit 15 that heats the air dehumidified by the dehumidifying unit 14, the case 16 that houses the dehumidifying unit 14 and the heating unit 15, the watering unit 18 that removes foreign matter attached to the dehumidifying unit 14, and the watering unit 18 A heat exchanger drainage channel 20 and a drainage pump 21 for discharging the discharged water from the case 16 are provided. The heat exchanger drainage channel 20 includes a second trap 22 that is a trap for collecting water discharged from the case 16 and a rising portion 23 that is higher than the highest water level during washing. With the above configuration, since an opening / closing mechanism such as a backflow prevention valve is not used, clogging of the heat exchanger drainage channel 20 is unlikely to occur, and airflow of washing water and drying air discharged from the outer tub 2 is supplied to the case 16. Backflow can be prevented.

In the washer / dryer 100 according to the first embodiment of the present invention, the heat exchanger drainage channel 20 may be connected to the main drainage channel 8 on the upstream side of the drainage valve 7 or on the downstream side of the drainage valve 7. It may be connected to the drainage channel 8. In the configuration in which the heat exchanger drain 20 is connected to the main drain 8 on the downstream side of the drain valve 7, the washing water discharged from the outer tub 2 is provided in the heat exchanger drain 20 in the washing operation. In addition, foreign substances such as undissolved detergent entering the second trap 22 can be more reliably prevented from accumulating in the second trap 22, and clogging of drainage can be more reliably prevented.

The washing / drying machine 200 according to Embodiment 2 of the present invention is provided with a first trap 9 for storing water discharged outside the washing / drying machine 200 on the downstream side of the drainage valve 7 in the main drainage channel 8. . The heat exchanger drainage channel 20 is connected to the first trap 9, and the first trap 9 and the second trap 22 constitute an integral trap. With the above configuration, the first trap 9 and the second trap 22 can be used together, and the air flow of washing water and drying air discharged from the outer tub 2 with a simple configuration flows back to the case 16. Can be prevented.

In the washer / dryer 300 according to the third embodiment of the present invention, the second trap 22 is disposed on the upstream side of the rising portion 23 in the heat exchanger drainage channel 20. With the above configuration, the washing water does not enter the second trap 22 when the washing water discharged from the outer tub 2 is drained, the heat exchanger drainage channel 20 can be kept clean, and the drainage is clogged. Can be prevented.

The present invention can prevent backflow of washing water or dry airflow discharged from the outer tub to the heat exchanger housing without using an open / close mechanism such as a backflow prevention valve, and is useful as a washing dryer and the like. is there.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Outer tub 3 Rotating drum 4 Clothes input 5 Laundry 6 Drive device 7 Drain valve 8 Main drain channel 9 First trap 10 Overflow channel 11 Water supply valve 12 Circulating air channel 13 Blower unit 14 Dehumidifying unit 15 Heating unit 16 Case 17 Lint filter 18 Sprinkling part 19 Water supply path 20 Heat exchanger drainage path 21 Drainage pump 22 Second trap 23 Start-up part

Claims

A housing and an outer tub elastically supported in the housing;
A rotating drum rotatably disposed in the outer tub;
A main drainage channel for discharging the water in the outer tank out of the housing;
A drain valve provided in the main drainage channel;
A dehumidifying unit for dehumidifying the drying air supplied into the rotating drum;
A heating unit for heating the drying air dehumidified by the dehumidifying unit, a heat exchanger accommodating unit for accommodating the dehumidifying unit and the heating unit,
A watering part for removing foreign matter adhering to the dehumidifying part;
A heat exchanger drainage channel and a drainage pump for discharging water discharged from the water sprinkling unit from the heat exchanger housing unit,
The heat exchanger drainage channel is provided with a trap for collecting water discharged from the heat exchanger accommodating portion, and is provided with a rising portion higher than the washing water level at the time of washing.
The washing / drying machine according to claim 1, wherein the heat exchanger drainage channel is connected to the main drainage channel on the downstream side of the drainage valve.
The said main drainage channel is provided with the 1st trap downstream from the said drainage valve, The said trap provided in the said heat exchanger drainage channel is a 2nd trap. The washing dryer described.
The washing / drying machine according to claim 3, wherein the heat exchanger drainage channel is connected to the first trap, and the first trap and the second trap constitute an integrated trap.
The washing / drying machine according to claim 3, wherein the second trap is disposed upstream of the rising portion in the heat exchanger drainage channel.