JP5887487B2 - Washing and drying machine - Google Patents

Description

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

  Conventionally, this type of washing and drying machine can wash laundry such as clothes in a rotating tub, supply hot air into the rotating tub when washing is completed, and continuously dry the washed laundry A drainage path is provided for discharging the washing water used at the time of washing out of the machine. The outlet side of the drainage channel communicates with the drainage channel while being placed at the installation site.

  In the dehydration process at the time of washing, in order to discharge the washing water separated from the laundry to the outside of the machine, it is operated with the drain valve opened. When drying, the cooling water that cools the heat exchanger and the dew condensation water that is in contact with the laundry and dampened by drying and dehumidifying the drying air are discharged outside the machine. Is done. Therefore, since it is used in a state where it communicates with the drainage channel via the drainage channel and the water tank containing the rotating tank, the drainage channel provided in the housing to prevent the strange odor from the drainage channel from flowing into the tank. A drain trap is formed on the surface (for example, see Patent Document 1).

  FIG. 6 shows a conventional washing and drying machine described in Patent Document 1. In FIG. In FIG. 6, a water tank 52 is elastically supported in a casing 51, and a cylindrical rotating tank 53 is rotatably provided in the water tank 52. The rotating tank 53 is rotationally driven by a motor 54 attached to the outside of the rear surface of the water tank 52. A large number of holes 55 are provided in the peripheral side surface of the rotating tub 53 to communicate with the water tank 52. The rotating tub 53 functions as a laundry room during washing and functions as a drying room during drying.

  A drain hole 56 provided in the bottom of the water tank 52 communicates with the outside of the machine through a drainage path 57, and an outlet 58 of the drainage path 57 communicates with a drainage path 59 piped on the floor surface to be installed. . By opening and closing the drain valve 60 provided in the drain path 57, storage and drainage of the washing water supplied into the water tank 52 are switched.

  In the drainage path 57, a substantially U-shaped drain trap 61 is formed in the casing 51 below the water tank 52, and the water drained from the drain hole 56 flows through the drain path 57 to the drain trap 61. The drainage route 57 is sealed with the water that has flowed over the elevated outlet 58 side, flows out, and accumulates in the drainage trap 61.

  Blowing means 62 is disposed in the lower part of the casing 51, and drying air is blown into the rotary tank 53 from the blower port 64 provided above the front part of the water tank 52 through the circulation air passage 63 during the drying operation. A heat pump device in which a heat absorber 65 and a heat radiator 66 are disposed in the circulation air passage 63 is provided, and the drying air that has come into contact with the clothes and dampened flows out of the rotating tank 53 and enters the circulation air passage 63. After being dehumidified by cooling with the heat absorber 65, it is heated by the radiator 66 to be circulated to the rotary tank 53 as high-temperature dry drying air.

  During the drying operation, lint generated from clothes or the like is mixed into the drying air and adheres to and accumulates on the air blowing means 62 provided in the circulation air passage 63, thereby reducing its function. A lint filter 67 that captures lint from the drying air is provided, and is disposed on the windward side of the air blowing means 62.

  In addition, it is considered that an outlet of a drainage path is connected to a drainage channel provided with a drainage trap, and the drainage trap is configured on the installation side (see, for example, Patent Document 2).

JP 2008-110088 A JP 2010-17526 A

  However, in the conventional configuration, when the drying operation is performed in a state where the lint is accumulated on the lint filter 67, the air volume of the drying air passing through the lint filter 67 is reduced, and the air volume flowing out from the water tank 52 to the circulation air path 63. On the other hand, since the air is blown into the water tank 52 by the air blowing means 62 disposed on the leeward side of the lint filter 67, the pressure in the water tank 52 increases. When the pressure in the water tank 52 rises, the water accumulated in the drain trap 61 is pressurized, and the water seal is broken because the water seal is broken by getting over the outlet 58 side where the drain trap 61 is raised. Therefore, the height C on the outlet 58 side of the drain trap 61 needs to be set high.

  As a result, the drain trap 61 becomes larger in the height direction and is disposed below the water tank 52 in the casing 51, so that the height of the casing 51 cannot be reduced and cannot be configured compactly. there were. In addition, since the large drain trap 61 is configured below the water tank 52 in the casing 51, the weight portion of the water tank 52 and the like that includes the rotating tank 53 and includes the motor 54 is positioned above the casing 51. However, there has been a problem that it is difficult to reduce the swing of the casing 51 due to vibration because the position of the center of gravity is increased.

  Therefore, in order to reduce the height of the housing, it is conceivable to connect the outlet of the drainage channel to a drainage channel equipped with a drain trap. A new problem arises that is subject to location restrictions.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a washing / drying machine in which a trap is eliminated and the drain trap is downsized.

A water supply means for supplying washing water to the aquarium, a drainage means for discharging the washing water in the aquarium, a drainage path for draining the washing water in the aquarium to the outside of the housing via the drainage means, A circulation air passage for introducing drying air, a blowing means for blowing air to the circulation air passage, a dehumidifying means for dehumidifying the drying air from the water tank, and heating for heating the drying air dehumidified by the dehumidifying means Means, a drying filter device for capturing lint contained in the drying air, a pressure detection means for detecting the pressure in the water tank, and a control means for controlling the washing and drying operation. A U-shaped drain trap is provided in the housing, and the control means reduces the rotation speed of the air blowing means when the pressure in the water tank rises and reaches a predetermined value during the drying operation. It is a thing.

  As a result, the pressure in the water tank can be lowered to a predetermined value or less during the drying operation, so even if the drying operation is performed with lint accumulated on the drying filter device, the pressure in the water tank is excessively increased. The drainage trap provided in the drainage path can be reduced in size, and trapping can be prevented.

  The washing / drying machine of the present invention can downsize the drain trap provided in the drainage path to prevent the trap from being cut, thereby realizing a compact washing / drying machine.

Configuration diagram of the washing and drying machine in Embodiment 1 of the present invention Enlarged view of the main parts of the washer / dryer Configuration diagram of drainage route of the washer / dryer Operation explanatory diagram of the washing dryer System diagram of the washing and drying machine in Embodiment 2 of the present invention Configuration diagram of a conventional washing and drying machine

1st invention, the water tank elastically supported in the housing | casing, the rotation tank provided rotatably in the said water tank, the motor which rotationally drives the said rotation tank, The water supply means which supplies washing water to the said water tank, Drainage means for discharging the wash water in the water tank, a drainage path for discharging the wash water in the water tank to the outside of the housing through the drainage means, and a circulation air path for introducing drying air into the water tank; , A blowing means for blowing air to the circulation air passage, a dehumidifying means for dehumidifying the drying air from the water tank, a heating means for heating the drying air dehumidified by the dehumidifying means, and a lint contained in the drying air A drying filter device, pressure detecting means for detecting the pressure in the water tank, and control means for controlling the washing and drying operation, wherein the drainage path includes a drain trap formed in a substantially U shape. The control means having in the housing When the pressure in the water tank rises during the drying operation reaches a predetermined value, by which so as to reduce the rotational speed of the blowing means, drying operation in a state in which lint is accumulated on the drying filter device is performed Even in this case, since the pressure in the water tank can be lowered to a predetermined value or less, it is possible to prevent the trap from being cut, and it is possible to realize a compact washing and drying machine by downsizing the drain trap.

  According to the second invention, in particular, the pressure detecting means of the first invention is provided with a drainage trap disposed on the downstream side of the drainage means by providing a sensing part for receiving pressure in the vicinity of the upstream side of the drainage means. It is possible to accurately detect the pressure applied to the water accumulated in the water and to optimally control the rotational speed of the blowing means.

  In the third invention, in particular, the pressure detection means of the first or second invention detects the water level of the washing water in the water tank, so that the pressure and water level in the water tank are detected by one pressure detection means. Both can be detected, and the configuration can be simplified.

  In particular, according to a fourth invention, in any one of the first to third inventions, the compressor that compresses the refrigerant, the radiator that radiates the heat of the compressed refrigerant, and the pressure of the high-pressure refrigerant are reduced. A heat pump device connected by a pipe so that the refrigerant circulates through a throttle means for reducing the pressure of the refrigerant that has been decompressed and reduced in pressure from the surroundings, and an intake port for taking outside air into the circulation air path, By having an exhaust port for discharging a part of the drying air flowing through the circulation air passage from the circulation air passage, the heat absorber constitutes a dehumidifying means, and the heat radiator constitutes a heating means. The drying object can be dried at a low temperature without overheating, and can be efficiently dried with less energy, and the amount of air flowing through the circulation air passage is reduced due to lint depositing on the drying filter device, Increased pressure in the tank That the, it is possible to lower the pressure in the water tank by the discharge thermal action of the drying air discharged from the exhaust port, it is possible to prevent breakage trap to suppress the increase in pressure in the water tank.

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

(Embodiment 1)
FIG. 1 is a block diagram of a washing / drying machine according to a first embodiment of the present invention, FIG. 2 is an enlarged view of the main part, FIG. 3 is a block diagram of the drainage path, and FIG. It is.

  1 to 4, the water tank 1 is elastically supported by a plurality of suspension mechanisms 3 inside a housing 2 of the washing / drying machine. The rotating tub 4 has a loading port 6 for taking in and out the laundry 5 on the front side, is configured in a bottomed cylindrical shape, and is disposed in the water tub 1. The rotating tub 4 is rotatably provided on the rotating shaft 4a and accommodates laundry 5 such as clothes.

  The peripheral wall 7 of the rotating tub 4 is provided with a large number of holes 8 over the entire circumference, and the stirring baffle for lifting the laundry 5 in the rotating direction of the rotating tub 4 is provided inside the peripheral side wall 7 of the rotating tub 4. 9 is provided. The water tank 1, the rotating tank 4, and the rotating shaft 4 a are provided to be tilted forward and upward at an angle θ (for example, 10 to 20 °) with respect to the horizontal.

  A motor 10 that rotationally drives the rotating tub 4 is provided outside the rear surface side of the water tub 1 so as to rotate the rotating tub 4 forward and backward. The motor 10 is constituted by a brushless DC motor or the like, and the rotation speed can be freely changed by inverter control. A door body 11 that opens and closes the insertion port 6 is provided on the front surface of the housing 2. The opening 1 a of the water tank 1 facing the inlet 6 is airtightly connected to the housing 2 by a flexible packing 12 that can be expanded and contracted.

  When the door body 11 is closed, the packing 12 provided in the opening 1a of the water tank 1 is in close contact with the inner surface of the door body 11, and the water tank 1 becomes a watertight and airtight space, and each of washing, rinsing, dehydration and drying is performed. When executing the process, water and air are not leaked to the outside.

  A water supply valve (water supply means) 13 is attached in the housing 2, and a water supply path 14 communicating with the water tank 1 is connected to the water supply valve 13 through a detergent case (not shown). By opening and closing the water supply valve 13, tap water can be supplied to the water tank 1 and stopped.

  Further, a drainage passage 15 is connected to a drainage hole 1 b provided at the bottom of the water tank 1, and a drainage valve (drainage means) 16 is provided. By opening and closing the drain valve 16, the washing water in the water tank 1 can be drained and stopped.

  A branch path 18 communicating with an air trap 17 provided in the vicinity of the lower end of the rear surface of the water tank 1 is connected to the drain path 15 between the water tank 1 and the drain valve 16. The air trap 17 is provided with pressure detection means 20 for detecting the pressure in the water tank 1 at the upper end portion thereof via a pressure detection path 19 extending upward.

  The pressure detection means 20 includes, for example, a pressure sensor that has a diaphragm inside and detects pressure from the amount of deformation of the diaphragm that is deformed when pressure is applied. The sensing part that receives the pressure in the water tank 1 is located in the vicinity of the upstream side of the drain valve 16 provided in the drain path 15 and is the entrance of the branch path 18 that leads to the pressure detection means 20 via the pressure detection path 19.

  Further, the drainage passage 15 is provided with a drainage trap 21 formed in a substantially U shape on the downstream side of the drainage valve 16. The drain trap 21 is formed of a flexible bellows-shaped drain hose, and is provided in the housing 2 below the bottom of the water tank 1 with the trap height C higher than the inner diameter D of the drain hose.

  A discharge port 22 is provided in the peripheral side wall 7 in the upper front portion of the water tank 1, and a blower port 23 is provided in the back surface of the water tank 1. The discharge port 22 and the air blowing port 23 are connected to each other by a circulation air passage 24 extending from the front upper side of the water tank 1 toward the rear side.

  The circulation air path 24 includes a cooling water supply unit 25 that supplies cooling water to dehumidify the drying air, and a heat exchanger (dehumidifying means) 26 that is cooled by the cooling water supplied from the cooling water supply unit 25. The drying filter device 27 that captures lint that passes through the circulation air passage 24 together with the drying air, the blowing means 28 that supplies the drying air to the rotating tub 4, and the drying air is heated downstream of the blowing means 28. A heating means 29 composed of a heater or the like is provided.

  The blower means 28 is composed of a fan 28a having a blade shape and a fan motor 28b that rotationally drives the fan 28a. The drying air blown by the blower means 28 passes through the heating means 29 and is heated, and then blown into the rotary tank 4 from the blower opening 23.

  The drying air discharged into the water tank 1 from the hole 8 of the rotating tank 4 flows into the circulation air path 24 from the discharge port 22 as shown by an arrow A in FIG. 1, and then the heat exchanger 26 and the drying filter device 27. In addition, it is configured to circulate to the rotary tank 4 through the air blowing means 28, the heating means 29, and the air blowing port 23.

  The drying air that has become wet due to contact with the laundry 5 in the rotating tub 4 is cooled by the heat exchanger 26 and dehumidified. The cooling water and the dehumidified water supplied from the cooling water supply unit 25 flow into the water tank 1 through the drain pipe 30, and pass through the drain hole 1 b provided at the bottom of the water tank 1 through the drain path 15 to the housing 2. It is discharged outside and flows into a drainage channel (not shown) communicating with the sewage piped on the floor.

  The drying filter device 27 is provided on the windward side of the air blowing unit 28 and captures lint contained in the drying air generated from the laundry 5, thereby preventing problems due to lint adhering to and depositing on the air blowing unit 28. .

  The control means 31 is disposed at the lower front portion in the housing 2 and controls the motor 10, the water supply valve 13, the drain valve 16, the air blowing means 28, the heating means 29, etc., and performs washing, rinsing, dehydration, and drying. The process is sequentially controlled. The output of the pressure detection means 20 for detecting the pressure in the water tank 1 and the water level of the washing water and the output of the motor rotation speed detection means 32 for detecting the rotation speed of the motor 10 are input.

  The operation and action of the washing / drying machine configured as described above will be described below. By inputting the selection of the driving course and the time of each process from the operation display unit 33 provided on the front upper portion of the housing 2, the control means 31 performs a series of operations from washing to drying based on the setting contents. It is possible to carry out, and it is also optionally possible to carry out only the drying step.

  When washing is performed, the door 11 is opened, the laundry 5 is put into the rotating tub 4, and an operation course or the like is input from the operation display unit 33 to start the operation. Water and detergent are supplied inside, and the rotating tub 4 is driven to rotate by the motor 10 to start the washing process.

  When the rotating tub 4 rotates at a predetermined speed, the laundry 5 is lifted in the rotating direction by the stirring baffles 9 provided at a plurality of locations on the inner peripheral surface, and is tapped by dropping from above in the rotating tub 4. Washing is performed by repeating the washing for a predetermined time.

  After the washing process, the rinsing process and the dehydrating process are executed to complete the washing. When an operation course for consistently executing from the washing process to the drying process is selected and input, when the washing process is completed, the control unit 31 executes the drying process following the washing process. Moreover, when drying wet clothes etc., only a drying process can be performed.

  In the drying process, when the laundry 5 or wet clothing (hereinafter referred to as clothing) that has been dehydrated is stored in the rotating tub 4 and the drying process is executed, the rotating tub 4 is rotated at the rotation speed set in the drying process. , The air blowing means 28 and the heating means 29 are driven, and the air circulation of the drying air into the rotating tub 4 is started. In this drying process, the water tank 1 plays the same role as a drying chamber in a clothes dryer.

  The drying air is blown by the blowing means 28, passes through the heating means 29, is heated, and then blown into the rotary tank 4 from the blowing port 23. The drying air blown into the rotating tub 4 comes into contact with the wet laundry 5 and removes moisture from the laundry 5, and then turns into wet drying air containing lint generated from the laundry 5. It flows out from the hole 8 of the tank 4 and flows into the circulation air path 24 from the discharge port 22 of the water tank 1.

  The wet drying air that has flowed into the circulation air path 24 is cooled and dehumidified by the heat exchanger 26, and then captures and removes lint from the drying air by the drying filter device 27 before reaching the blowing means 28.

  In the drying process, the drain valve 16 is normally closed. As the drying process proceeds, the drain valve 16 is opened at a predetermined interval for a predetermined time in order to drain the water accumulated in the water tank 1. When the drying process is performed in a state where lint is accumulated on the drying filter device 27, the drying air circulating in the circulation air passage 24 is less likely to flow from the drying filter device 24 to the downstream side.

  In this state, when the drying air is blown into the water tank 1 by the blowing means 28, the pressure in the water tank 1 increases. When the pressure detection means 20 for detecting the pressure in the water tank 1 detects the pressure in the water tank 1 at a predetermined pressure h1 (for example, 400 kPa), the control means 31 changes the rotation speed of the blower means 28 to the steady rotation speed r0 (for example, 5800 revolutions) to a predetermined revolution number r1 (for example, 5200 revolutions).

  Thereby, before the pressure in the water tank 1 reaches the pressure h0 at which the drain trap 21 is cut off, that is, before the water sealing the drain path 15 is pushed out of the drain trap 21, the pressure in the water tank 1 is reduced. The trap height C of the drainage trap 21 can be lowered and the size can be reduced.

  Generally, when the inner diameter D of the drainage hose is 35 mm, the trap height C is set to about 50 mm. However, by reducing the rotational speed of the blower means 28 to a predetermined rotational speed r1, the trap height C is reduced to about 30 to 35 mm. It can be downsized.

  As described above, in the present embodiment, the water tank 1 elastically supported in the housing 2, the rotary tank 4 rotatably provided in the water tank 1, the motor 10 that rotationally drives the rotary tank 4, and the water tank A water supply means 13 for supplying wash water to the water 1, a drain means 16 for discharging the wash water in the water tank 1, and a drain passage 15 for discharging the wash water in the water tank 1 to the outside of the housing 2 through the water drain means 16. The circulation air passage 24 for introducing the drying air into the water tank 1, the air blowing means 28 for blowing air to the circulation air path 24, the dehumidifying means 26 for dehumidifying the drying air discharged from the water tank 1, and the dehumidifying means 26 Heating means 29 for heating the drying air, drying filter device 27 for capturing lint contained in the drying air, pressure detection means 20 for detecting the pressure in the water tank 1, and control for controlling the washing and drying operations Means 31 and the drainage channel 15 is substantially U-shaped. The drainage trap 21 formed in the housing 2 is provided in the housing 2, and the control means 31 is configured to reduce the rotational speed of the blower means 28 when the pressure in the water tank 1 reaches a predetermined value during the drying operation. Even when the drying operation is performed in a state where lint is accumulated on the drying filter device 27, the pressure in the water tank 1 can be lowered to a predetermined value or less, so that the trap breakage can be prevented and the drain trap 21 The housing 2 can be miniaturized to realize a compact washing and drying machine.

  A pressure detection means 20 is connected to the drainage path 15 upstream of the drainage valve 16 and detects the pressure in the water tank 1 at its upper end via a pressure detection path 19 extending upward to the air trap 17. The pressure detection means 20 is provided with a sensing part that receives the pressure in the water tank 1 in the vicinity of the upstream side of the drainage means 16, and is collected in a drain trap 21 disposed downstream of the drainage means 16. It is possible to accurately detect the pressure applied to the water, and to control the rotational speed of the air blowing means 28 optimally.

  Moreover, the pressure detection means 20 can detect the water level of the washing water in the water tank 1 at the time of washing, and can detect both the pressure and the water level in the water tank 1 with one pressure detection means. Simplify.

(Embodiment 2)
FIG. 5 is a system diagram of the washing / drying machine according to the second embodiment of the present invention. The present embodiment is characterized by a heat pump device 35, an intake port 42 for taking outside air into the circulation air passage 24, and an exhaust port 41 for discharging a part of the drying air flowing through the circulation air passage 24 from the circulation air passage 24. The heat absorber 39 constitutes the dehumidifying means 26, and the heat radiator 37 constitutes the heating means 29. 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.

  In FIG. 5, a heat pump device 35 includes a compressor 36 that compresses a refrigerant, a radiator 37 that radiates heat of the compressed high-temperature and high-pressure refrigerant, and a capillary tube that reduces the pressure of the high-pressure refrigerant. The pipe 38 is connected to the means 38 so that the refrigerant circulates through the heat absorber 39 from which the refrigerant whose pressure has been reduced to low pressure takes heat from the surroundings.

  The drying air blown by the blowing means 28 is cooled and dehumidified by a heat absorber 39 provided in the circulation air passage 24, heated by a radiator 37, supplied from the blower opening 23 to the rotating tub 4, and the circulation air is discharged from the discharge outlet 22 It flows into the path 24 and circulates.

  It has an exhaust port 41 through which a part of the drying air that has flowed out of the rotary tank 4 can be discharged out of the circulation air passage 24, and is configured to be opened and closed by an exhaust valve 41a. Between the exhaust port 41 and the heat absorber 39, there is an intake port 42 through which outside air can be introduced into the circulation air passage 24, and the intake port 42a can be opened and closed.

  A drying filter device 27 that captures lint that passes through the circulation air passage 24 together with drying air is disposed in the circulation air passage 24 between the exhaust port 41 and the intake port 42.

  Next, the operation and action of the washing / drying machine having the above configuration will be described below. In the heat pump device 35, the refrigerant is compressed by the operation of the compressor 36, and by this pressure, the refrigerant flows through the pipe line 40 from the compressor 36 and circulates through the radiator 37, the throttle means 38, the heat absorber 39, and the compressor 36. The heat of the compressed refrigerant flows into the radiator 37 and is radiated to the air in contact with the fins provided in the ducts 40 provided in the radiator 37. Air is heated.

  The heated drying air is supplied from the blower opening 23 to the rotating tub 4, takes moisture from the clothes 5, becomes moist air, and is discharged from the discharge opening 22 to the circulation air passage 24. As the garment 5 is dried, lint such as lint is generated from the garment 5. The drying air discharged from the discharge port 22 passes through the drying filter device 27, and lint contained in the air is captured.

  The drying air from which the lint has been removed by the drying filter device 27 is dehumidified by being deprived of sensible heat and latent heat when passing through the heat absorber 39 through which the low-pressure refrigerant is decompressed by the throttling means 38 and flows. Condensed water generated as a result is dropped into a water storage section (not shown), and the drying air that has been dehumidified and dried passes through the radiator 37 and is heated. The dehumidified condensed water is drained outside the machine through the drainage path 15.

  The amount of heat by which the drying air is heated by the radiator 37 is approximately equal to the sum of the power consumption of the compressor 36 and the amount of heat absorbed from the drying air by the heat absorber 39, so the radiator 37 is connected to the compressor 36. It is possible to heat the drying air by obtaining an output greater than the input power. However, if the drying air in the circulation air passage 24 is repeatedly circulated, the amount of heat of the entire drying air will continue to be accumulated by subtracting the amount of heat radiated naturally from the amount corresponding to the power consumption of the compressor 36. Become.

  At the same time, the amount of heat of the refrigerant in the heat pump device 35 continues to increase, the temperature and pressure of the refrigerant excessively increase, and there is a possibility that the compressor 36 will be overloaded. In order to avoid this, an exhaust port 41 for exhausting a part of the drying air flowing through the circulation air passage 24 to the outside of the circulation air passage 24 and an intake port 42 for introducing outside air into the circulation air passage 24 are provided. Yes.

  A refrigerant temperature detecting means 43 for detecting the temperature of the refrigerant flowing through the pipe line 40 is provided, and when the refrigerant temperature becomes equal to or higher than a predetermined temperature, the intake valve 42a provided at the intake port 42 is opened to introduce outside air into the circulation air path 24. Then, the exhaust valve 41 a provided at the exhaust port 41 is opened to exhaust a part of the drying air flowing through the circulation air passage 24 to the outside of the circulation air passage 24.

  The drying air that flows through the circulation air passage 24 by the cooling of the outside air flowing into the circulation air passage 24 by the introduction of the outside air into the circulation air passage 24 and the partial exhaust of the drying air and the exhaust of the high-temperature drying air Since the temperature of the refrigerant decreases, the temperature of the refrigerant also decreases, preventing the compressor 36 from being overloaded due to the excessive increase in the refrigerant temperature.

  When the refrigerant temperature is lowered to a predetermined temperature, the intake valve 42a and the exhaust valve 41a are closed, and there is no introduction of outside air from the intake port 42 and no exhaust from the exhaust port 41, and drying that is blown into the circulation air path 24. The amount of heat is accumulated in the working air, and the drying air having a high drying effect circulates.

  The generation of lint from the garment 5 is increased as the garment 5 is dried from the start of drying when the garment 5 is wet, and the amount of lint increases on the drying filter device 27 and increases. Air becomes difficult to flow.

  In this state, when the drying air is blown into the water tank 1 by the blowing means 28, the pressure in the water tank 1 increases. When the pressure detection means 20 for detecting the pressure in the water tank 1 detects the pressure in the water tank 1 at a predetermined pressure h1 (for example, 400 kPa), the control means 31 changes the rotation speed of the blower means 28 to the steady rotation speed r0 (for example, 5800 revolutions) to a predetermined revolution number r1 (for example, 5200 revolutions).

  In addition, when the temperature of the refrigerant exceeds a predetermined temperature, the heat pump device 35 opens the intake valve 42a provided at the intake port 42 to introduce the outside air into the circulation air passage 24, and the exhaust valve 41a provided at the exhaust port 41. Since a part of the drying air that opens and flows through the circulation air passage 24 is exhausted to the outside of the circulation air passage 24, it can be efficiently dried with less energy, and lint accumulates on the drying filter device 27 and the circulation air passage When the amount of air flowing in the water tank 24 decreases and the pressure in the water tank 1 increases, the pressure in the water tank 1 can be decreased at the same time by the exhaust heat action of the drying air discharged from the exhaust port 41. The pressure can be effectively reduced, and trapping can be prevented.

  As described above, the washing / drying machine according to the present invention can downsize the drain trap provided in the drainage path, prevent the trap from being cut, and realize a compact washing / drying machine. It is useful as a machine.

DESCRIPTION OF SYMBOLS 1 Water tank 2 Case 4 Rotating tank 10 Motor 13 Water supply valve (water supply means)
15 Drainage path 16 Drainage valve (Drainage means)
20 Pressure detection means 21 Drain trap 24 Circulating air passage 26 Heat exchanger (dehumidification means)
27 Drying filter device 28 Blowing means 29 Heating means 31 Control means

Claims (4)

A water tank elastically supported in the housing, a rotary tank rotatably provided in the water tank, a motor for rotationally driving the rotary tank, water supply means for supplying washing water to the water tank, and washing water in the water tank A drainage means for discharging the washing water in the water tank through the drainage means, a circulation air path for introducing drying air into the water tank, and a circulation air path Blowing means for blowing air, dehumidifying means for dehumidifying drying air from the water tank, heating means for heating the drying air dehumidified by the dehumidifying means, and a drying filter device for capturing lint contained in the drying air And a pressure detection means for detecting the pressure in the water tank, and a control means for controlling washing and drying operation, the drainage path has a drain trap formed in a substantially U shape in the housing, The control means is used during a drying operation. It reaches a predetermined value the pressure of the water tank rises, washing and drying machine so as to reduce the rotational speed of the blowing means. The washing / drying machine according to claim 1, wherein the pressure detection means is provided with a sensing part receiving pressure in the vicinity of the upstream side of the drainage means. The washing / drying machine according to claim 1 or 2, wherein the pressure detection means detects the water level of the washing water in the water tank. A compressor that compresses the refrigerant, a radiator that dissipates the heat of the compressed refrigerant, a throttling means for reducing the pressure of the high-pressure refrigerant, and an endothermic structure in which the decompressed and low-pressure refrigerant takes heat from the surroundings A heat pump device connected by a pipe so as to circulate the refrigerant, an intake port for taking outside air into the circulation air passage, and an exhaust for discharging a part of the drying air flowing through the circulation air passage from the circulation air passage The washing / drying machine according to any one of claims 1 to 3, further comprising a mouth, wherein the heat absorber constitutes a dehumidifying means, and the heat radiator constitutes a heating means.

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