JP2015146933A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent backflow of washing water and drying airflow to a heat exchanger accommodation part without providing an opening/closing mechanism such as a check valve and the like.SOLUTION: A washing and drying machine includes: an outer tub 2 elastically supported in a housing 1; a rotary drum 3 disposed rotatably in the outer tub 2; a main drain passage 8 for discharging water in the outer tub 2 to the outside of the housing 1; a drain valve 7 for opening/closing the main drain passage 8; dehumidification means 14 for dehumidifying air for drying supplied to the rotary drum 3; a heat exchanger accommodation part 16 for accommodating the dehumidification means 14; water spraying means 18 for removing foreign substances attached to the dehumidification means 14; and a heat exchanger drain passage 20 and a drainage pump 21 for draining water discharged from the water spraying means 18 from the heat exchanger accommodation part 16. In the heat exchanger drain passage 20, a second trap 22 for storing sealing water and a rising part 23 which is higher than a washing water level during washing are provided.

Description

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

  2. Description of the Related Art Conventionally, a washing machine having this type of drying function, a so-called washing / drying machine, can continuously dry laundry such as washed clothes in the same tank. In the drying process, the drying air is blown into the rotating drum while stirring the laundry in the rotating drum, and the drying air that has come into contact with wet clothes is cooled and dehumidified by the dehumidifying means, and then heated. It circulates as dry warm air heated by, and advances the drying of clothing.

  As the laundry is dried, lint such as lint is easily generated from clothes. Lint separated from clothing, etc., mixes with the drying air and adheres to the air blower and heat exchanger provided in the circulation air passage, causing it to deteriorate its function. A lint filter for collecting lint such as lint is provided. 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 ensure a certain amount of air flow. When the lint that has passed through the lint filter adheres to the heat exchanger, the heat exchange efficiency decreases, and therefore it is considered to remove the lint that has adhered to the heat exchanger (for example, see Patent Document 1).

  FIG. 4 is a configuration diagram of a conventional washing and drying machine described in Patent Document 1. As shown in FIG. In FIG. 4, a blowing 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. Dry air that has flowed from the rotary drum 55 to the circulation air passage 51 passes through the lint filter 54 and circulates to the outer tank 57 via the evaporator 53 and the condenser 56. Watering means 58 for washing the surfaces of the evaporator 53 and the condenser 56 is provided to wash away foreign matters such as lint and hair attached thereto.

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

JP 2008-86421 A

  However, in the above-described conventional configuration, the wash water that has flowed from the sprinkling means 58 joins the drainage path 60 of the wash water and drains it. There was a problem that it entered into the heat exchanger housing 61 provided and dirt on the washing water adhered 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. There was a problem that it flowed into the container housing part 61 and the discharge of condensed water was hindered.

Therefore, it is conceivable to provide an open / close mechanism such as a check valve in the dew condensation water drainage path, but since the water that has washed the heat exchanger contains lint and hair, these adhere to and accumulate on the open / close mechanism. ,
There was a possibility that the drainage route might be blocked and it was difficult to drain smoothly.

  The present invention solves the above-mentioned conventional problems, and provides a washing / drying machine that prevents backflow of washing water or dry airflow into a heat exchanger housing without providing an opening / closing mechanism such as a check valve. With the goal.

  In order to solve the above-described conventional problems, a washing / drying machine according to the present invention includes an outer tub elastically supported in a housing, a rotating drum rotatably disposed in the outer tub, and water in the outer tub. A main drainage channel that discharges the outside of the housing, a drain valve that opens and closes the main drainage channel, a dehumidifying unit that dehumidifies drying air supplied into the rotating drum, and a heat exchanger housing that houses the dehumidifying unit A heat exchanger drainage channel and a drainage pump for discharging water discharged from the watering means from the heat exchanger housing, and a heat pump. In the container drainage channel, a second trap for storing sealed water and a rising portion higher than the washing water level at the time of washing are provided.

  Accordingly, since an opening / closing mechanism such as a check valve is not used, the backflow of the washing water or the dry airflow to the heat exchanger housing portion can be prevented without clogging the heat exchanger drainage channel.

  The washing / drying machine of the present invention can prevent backflow of washing water or dry airflow into the heat exchanger housing without using an opening / closing mechanism such as a check valve.

Configuration diagram of the washing and drying machine in Embodiment 1 of the present invention Configuration diagram of a washing and drying machine in Embodiment 2 of the present invention The block diagram of the washing-drying machine in Embodiment 3 of this invention Configuration diagram of a conventional washing and drying machine

  The first invention includes an outer tub elastically supported in a housing, 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 housing, A drain valve that opens and closes the main drainage channel, a dehumidifying means that dehumidifies the drying air supplied into the rotating drum, a heat exchanger accommodating portion that accommodates the dehumidifying means, and a foreign matter attached to the dehumidifying means is removed. And a heat exchanger drainage channel and a drainage pump for discharging water discharged from the watering unit from the heat exchanger accommodating portion, and storing a sealed water in the heat exchanger drainage channel. Since the trap and the rising part higher than the washing water level at the time of washing are not used, an opening / closing mechanism such as a check valve is not used. Backflow to the heat exchanger housing can be prevented.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, the heat exchanger drainage channel is connected to the main drainage channel on the downstream side of the drainage valve. It is possible to prevent foreign substances such as undissolved detergent from entering the second trap and accumulating in the second trap, and more reliably preventing clogging of drainage.

  In a third aspect of the invention, in particular, in the first or second aspect of the invention, the main drainage channel is provided with a first trap for storing sealed water downstream from the drainage valve, and the heat exchanger drainage channel is connected to the first drainage channel. By connecting to one trap and forming the second trap, the first trap and the second trap can be used together, and with a simple configuration, the washing water and dry air flow to the heat exchanger housing Backflow can be prevented.

  According to a fourth aspect of the invention, in particular, in the first aspect of the invention, the second trap is disposed on the upstream side of the rising portion, so that the washing water enters the second trap when the washing water is drained. The heat exchanger drainage channel can be kept clean, and drainage clogging can be prevented.

  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 configuration diagram of a washing / drying machine according to a first embodiment 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 bottomed cylindrical shape is rotatably provided in the outer tub 2 and is arranged with its axial direction oriented substantially in the horizontal direction. The outer tub 2 is disposed along the rotary drum 3.

  On the front side of the outer tub 2, a clothing input port 4 that leads to the opening end of the rotary drum 3 is formed, and the laundry 5 can be taken in and out of the rotary drum 3 through the clothing input port 4. The rotating drum 3 is rotationally driven in the normal and reverse directions by a driving device 6 such as a motor attached to the back side of the outer tub 2 to perform washing and drying processes.

  In the washing process, the rotary drum 3 is rotationally driven by the driving 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 from above in the rotary drum 3. Dropped on the water surface. It is beaten and washed by the impact at the time of dropping, and the dirt adhering to the laundry 5 is removed.

  When the set predetermined time has elapsed, the drain valve 7 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 housing 1 through the main drainage channel 8.

  Similarly, in the rinsing process performed after the washing process, the newly supplied washing water acts on the laundry 5 in the rotationally driven rotary drum 3, and the remaining dirt on the laundry 5 becomes dirty. Washing water and detergent components are dropped.

  When the set predetermined time has elapsed, the drain valve 7 is opened to drain the rinse water and perform dehydration. An overflow path 10 is provided in the outer tub 2, and is connected to the main drainage path 8 between the drainage valve 7 and the first trap 9. When the amount of water supplied is larger than the set amount due to a failure of the water supply valve 11, the washing water in the outer tub 2 is discharged out of the housing 1.

  A drying operation can be performed following the washing operation in which the steps of washing, rinsing, and dewatering are sequentially performed. In the drying process, in order to dry the laundry 5 accommodated in the rotary drum 3, the air in the outer tub 2 is sucked and returned to the outer tub 2 through the circulation air passage 12 for circulation. Means 13 are provided.

  The air blowing means 13 is provided in the circulation air passage 12. In the circulation air passage 12, a case (heat exchanger accommodating portion) for accommodating a dehumidifying means 14 for dehumidifying the humid air from the outer tub 2 and a heating means 15 for heating the dry air dehumidified by the dehumidifying means 14. ) 16 is provided.

The dehumidifying means 14 and the heating means 15 can be configured by a heat pump device. 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 throttling means including a capillary tube for reducing the pressure of the high-pressure refrigerant, The refrigerant having a low pressure takes heat from the surroundings and is connected by a pipe line so that the refrigerant circulates. In this case, the evaporator is the dehumidifying means 14, the condenser is the heating means 15, and is constituted by a fin tube heat exchanger.

  By rotationally driving the air blowing means 13, an air flow is generated in the circulation air passage 12 and the air in the rotary drum 3 containing the laundry 5 is exhausted from the outer tub 2. The air from the outer tub 2 is dehumidified by dehumidifying the dehumidifying means 14 located upstream of the air blowing means 13, and is further heated by heat exchange with the heating means 15 to obtain dry high-temperature air. Can do.

  The dried high-temperature air is blown into the outer tub 2 by the blowing means 13. The hot dry air blown into the outer tub 2 enters the rotating 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, the heat exchanger accommodating portion It passes through the inside of the case 16 and reaches the air blowing means 13, and the drying process is executed by repeating the circulation as described above.

  Further, the circulation air passage 12 is provided with a lint filter 17 on the upstream side of the air blowing means 13, the dehumidifying means 14, and the heating means 15, and foreign matters such as lint and hair scattered from the laundry 5 contained in the dry airflow. To collect.

  However, it is difficult to completely collect foreign matters 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 means 14. If foreign matter accumulates on the dehumidifying means 14 and becomes clogged, the drying air volume and dehumidifying efficiency will be reduced, resulting in poor drying such as reduced drying performance. Watering means 18 for cleaning is provided on the upstream side of the dehumidifying means 14.

  Water is supplied to the watering means 18 through the water supply path 19 by the water supply valve 11, and the water discharged from the watering means 18 flushes out foreign matters adhering to the surface of the dehumidifying means 14, keeps the dehumidifying means 14 clean and has a drying performance. Prevent decline. In addition, you may perform the supply of the water to the sprinkling means 18 by water supply means, such as a pump.

  The water after washing the dehumidifying means 14 is discharged 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 storing sealed water. Thereby, in the drying process, even when the pressure in the rotary drum 3 rises, the dry airflow flows 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 undried due to poor drainage of condensed water.

  Further, by raising a part of the heat exchanger drainage channel 20 upward and providing a riser 23 that is higher than the washing water level at the time of washing, the washing water flows back to the case 16 at the time of draining the washing process. Can be prevented.

  As described above, in the present embodiment, the outer tub 2 elastically supported in the housing 1, the rotating drum 3 rotatably disposed in the outer tub 2, and the water in the outer tub 2 are accommodated in the housing. A main drainage channel 8 that discharges outside the body 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 heat exchange that houses the dehumidifying unit 14 A water storage unit 18 that removes foreign matter adhering to the dehumidifying unit 14, a heat exchanger drainage channel 20 that discharges water discharged from the watering unit 18 from the heat exchanger storage unit 16, and a drain pump 21. The heat exchanger drainage channel 20 is provided with a second trap 22 for storing sealed water and a rising portion 23 higher than the washing water level at the time of washing, and an open / close mechanism such as a check valve is used. Since there is no clogging of the heat exchanger drainage channel 20, washing water and drying Can flow is prevented from flowing back into the heat exchanger housing portion 16 for housing the moisture means 14 dividing.

  Further, the heat exchanger drainage channel 20 is connected to the main drainage channel 8 on the downstream side of the drainage valve 7, so that the washing water does not enter the second trap 22 in the washing process, and thus is not dissolved. It is possible to prevent foreign substances such as detergent from accumulating in the second trap 22 and more reliably prevent clogging of drainage.

  The dehumidifying means 14 can be composed of an evaporator of a heat pump device or a water-cooled or air-cooled heat exchanger.

(Embodiment 2)
FIG. 2 is a configuration diagram of the washing / drying machine according to the second embodiment of the present invention. A feature of the present embodiment is that a first trap 9 for storing sealed water is provided downstream from the drain valve 7, and the heat trap drain 20 is connected to the first trap 9 to form a second trap 22. It is a thing. 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.

  A drainage valve 7 is provided in the main drainage channel 8, and a first trap 9 for storing sealed water is provided in the main drainage channel 8 on the downstream side of the drainage valve 7. The heat exchanger drainage channel 20 is connected to the first trap 9 to form a second trap 22.

  With the above configuration, the second trap 22 can be used also as the first trap 9, and the backflow of the washing water or the dry airflow to the heat exchanger accommodating portion 16 can be prevented with a simple configuration.

(Embodiment 3)
FIG. 3 is a configuration diagram of a washing / drying machine according to the third embodiment of the present invention. The feature of the present embodiment is that the second trap 22 is arranged on the upstream side of the rising portion 23. 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 not only during the washing process but also at the time of draining the washing water, the heat exchanger drainage channel 20 can be kept clean. The drainage clogging can be surely prevented.

  The heat exchanger drainage channel 20 may communicate with the outer tub 2, the overflow channel 10, etc. other than the main drainage channel 8.

  As described above, the washing / drying machine according to the present invention can prevent backflow of washing water or drying airflow into the heat exchanger housing without using an opening / closing mechanism such as a check valve. It is useful as a machine.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Outer tank 3 Rotating drum 7 Drain valve 8 Main drainage channel 14 Dehumidification means 16 Case (heat exchanger accommodating part)
18 Watering means 20 Heat exchanger drainage channel 21 Drainage pump 22 Second trap 23 Start-up part

Claims (4)

An outer tank 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 for opening and closing the main drainage channel;
Dehumidifying means for dehumidifying the drying air supplied into the rotating drum;
A heat exchanger housing for housing the dehumidifying means;
Watering means for removing foreign matter adhering to the dehumidifying means;
A heat exchanger drainage channel and a drainage pump for discharging water discharged from the water sprinkling means from the heat exchanger accommodating portion,
A washing dryer having a second trap for storing sealed water and a rising portion higher than a washing water level at the time of washing in the heat exchanger drainage channel. The washing and 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 main drainage channel is provided with a first trap for storing sealed water downstream from the drainage valve,
The washing / drying machine according to claim 1 or 2, wherein the heat exchanger drainage channel is connected to the first trap to form a second trap. The washing / drying machine according to claim 1, wherein the second trap is disposed on the upstream side of the rising portion.

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