JP2014083275A - Washing and drying machine - Google Patents

Abstract

A drum-type washing / drying machine that achieves efficient drying performance is provided.
A rotating drum 1 for storing clothes, drying air to be supplied into the rotating drum 1 are generated, a heat pump device 30 including a compressor 32, a water tank 3, and a heat pump device 30 are connected to dry air. The circulation air passage 47 for circulating the air, the blower 40 for blowing air to the circulation air passage 47, the pump 38 for draining dehumidified water in the heat pump device 30, the motor 5, the compressor 32, the blower 40, the pump 38, etc. Control means 50 for sequentially controlling a series of processes such as washing, rinsing, dehydration, and drying. The control means 50 controls the blower 40 at a predetermined rotational speed during the drying process while the operation of the pump is stopped. The rotational speed of the blower 40 is reduced during operation of the pump 38.
[Selection] Figure 4

Description

  The present invention relates to a washing / drying machine having a laundry washing function and a drying function.

  Conventionally, this type of drum-type washing and drying machine has been proposed to dry clothes by dehumidifying and heating the air in the drum using a heat pump device and supplying the air again into the drum (for example, Patent Document 1).

  FIG. 5 is a partial schematic view of a longitudinal section of a conventional drum-type washing and drying machine described in Patent Document 1.

  In FIG. 5, an outer tub 52 that is swingably supported in a housing 51 is disposed so as to be lifted forward, and a drum 53 is rotatably disposed in the outer tub 52. The drum 53 is rotationally driven by a motor 54. A heat pump device 55 is disposed in the upper space between the casing 51 and the outer tub 52.

  The heat pump device 55 includes a heat pump device outer shell 56, a compressor 57, a heat absorber 58, a decompressor 59, and a radiator 60. The bottom surface of the heat pump device outer shell 56 is inclined upward along the outer tub 52, and a dehumidified water drain port 61 is provided in the bottom inclined portion of the heat pump device outer shell 56. The dehumidified water drain port 61 and the outer tub 52 are connected to each other. The dehumidified water drain passage 62 is connected. The outer tub 52 and the heat pump device 55 are connected by a duct 63 to form a circulation air passage 64, and a heat absorber 58 and a radiator 60 are arranged in the circulation air passage 64. A blower 65 is provided behind the heat pump device 55. And the lint filter 66 is arrange | positioned in the upstream vicinity of the heat absorber 58, and the yarn waste generated from the laundry at the time of drying is collected.

  In the above configuration, the air is circulated in the order of the outer tub 52, the heat absorber 58, the radiator 60, and the outer tub 52 in the circulation air passage 64 by the operation of the blower 65. By the operation of the compressor 57, air is heated by the radiator 60, and the heated air is supplied from the outer tank 52 to the drum 53. The air that has become moist after removing moisture from the clothes in the drum 53 is discharged from the drum 53 to the outer tub 52 and supplied to the heat absorber 58. Here, the air is cooled and dehumidified, and dehumidified water is generated. The generated dehumidified water is naturally drained from the dehumidified water drain port 61 to the outer tub 52 through the dehumidified water drain passage 62 and is discharged to the outside through the drain path 67.

JP 2010-106 A

  However, in the conventional configuration, since the heat pump device has a negative pressure in the circulation air passage, the air in the dehumidified water drain passage is sucked in from the dehumidified water drain port and flows backward, so that the dehumidified water is not drained smoothly. There has been a problem that the performance of the heat pump device cannot be efficiently exhibited as prescribed. In addition, not only natural drainage but also pump drainage using a pump for drainage has the same problem.

The present invention solves the above-mentioned conventional problems. By adjusting the number of rotations of the blower, draining smoothly without using extra parts such as a check valve, the performance of the heat pump device is predetermined. The purpose of the present invention is to provide a washing / drying machine that can be efficiently used in the street.

  In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes a washing machine body, a rotating drum that accommodates clothing, and a vibration-proof support that swings within the washing machine body. A heat pump that connects a compressor, a radiator, a decompressor, and a heat absorber connected by piping to generate a drying water to be supplied into the rotating drum, a water tank that is rotatably included, a motor that rotationally drives the rotating drum An apparatus, a circulation air passage for connecting the water tank and the heat pump device to circulate drying air, a blower for blowing air to the circulation air passage, a pump for draining dehumidified water in the heat pump device, the motor, Control means for controlling the compressor, the blower, the pump, etc., and sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying, and the control means includes the pump in the drying step. During the operation stop, the fan is driven at a predetermined rotation speed, during operation of the pump, is intended to reduce the rotation speed of the blower.

  This makes it possible to smoothly drain the dehumidified water in the heat pump device without using extra parts such as a check valve, and it is inexpensive and efficiently demonstrates the performance of the heat pump device as specified. Can do.

  The washing / drying machine of the present invention can improve the performance of the heat pump device by smoothly draining the dehumidified water in the heat pump device without using extra parts such as a check valve by adjusting the rotation speed of the blower. It can be exhibited efficiently as prescribed.

The longitudinal cross-sectional view of the drum type washing-drying machine in embodiment of this invention Internal perspective view from the rear of the drum type washing and drying machine The top view which shows the structure of the heat pump apparatus of the drum type washing-drying machine Time chart showing an example of dehumidified water drainage operation of the drum type washing and drying machine The figure which partially modeled the longitudinal section of the conventional drum type washing and drying machine

  The washing / drying machine of the present invention includes a washing machine main body, a rotating drum that houses clothes, a water tank that is supported in a vibration-proof manner in the washing machine main body and that rotatably includes the rotating drum, and the rotation A motor that rotationally drives the drum, a heat pump device that connects the compressor, a radiator, a decompressor, and a heat absorber that generates drying air to be supplied into the rotary drum, and the water tank and the heat pump device. A circulation air passage that circulates drying air, a blower that blows air to the circulation air passage, a pump that drains dehumidified water in the heat pump device, the motor, the compressor, the blower, the pump, and the like And control means for sequentially controlling a series of processes such as washing, rinsing, dehydration, and drying, and the control means controls the blower while the pump is stopped in the drying process. Is driven at a constant rotational speed, during operation of the pump, it is intended to reduce the rotation speed of the blower.

  This makes it possible to smoothly drain the dehumidified water in the heat pump device without using extra parts such as a check valve, and it is inexpensive and efficiently demonstrates the performance of the heat pump device as specified. Can do.

  The said structure WHEREIN: The said control means is good also as stopping the rotation speed of the said air blower during the operation | movement of the said pump in the said drying process.

  Thereby, rotation of an air blower can be stopped and dehumidified water can be drained reliably.

  The said structure WHEREIN: When the rotation speed of the said air blower is reduced, the said control means reduces the rotation speed of the said compressor simultaneously.

  Thereby, the performance of the heat pump device can be efficiently exhibited as predetermined.

  The said structure WHEREIN: When the rotational speed of the said air blower is reduced, the said control means stops the rotational speed of the said compressor simultaneously.

  Thereby, rotation of an air blower can be stopped and dehumidified water can be drained reliably.

In the above configuration, when the control means reduces the rotational speed of the blower, the embodiment of the invention will be described below with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing / drying machine according to an embodiment of the present invention, and FIG. 2 is an internal perspective view from the rear.

  1 and 2, the rotary drum 1 is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire surface of the outer periphery, and are rotatably disposed in the water tank 3. A rotation axis (rotation center axis) 4 is provided at the rotation center of the rotary drum 1 in the inclination direction, and the axial center direction of the rotation drum 1 is inclined downward from the front side toward the back side. A motor 5 attached to the rear surface of the water tank 3 is connected to the rotary shaft 4 to drive the rotary drum 1 to rotate in the forward and reverse directions. A plurality of protruding plates 6 for stirring clothes are provided on the inner wall surface of the rotating drum 1.

  An opening provided in the upward inclined surface on the front side of the water tank 3 is covered with a lid 7 so as to be freely opened and closed, and the laundry 7 can be opened and closed by opening the lid 7 so that the laundry can be taken in and out of the rotary drum 1. .

  The aquarium 3 is supported in an anti-vibration manner by a vibration isolating member 9 below the washing machine body 100, and one end of the drainage path 10 is connected to the lower part of the aquarium 3, and the other end of the drainage path 10 is connected to a drain valve (drainage). Means) 11 is connected to drain the washing water in the water tank 3. The water supply valve (water supply means) 12 supplies water into the water tank 3 through the water supply path 13.

  A control device 50 having a control means (not shown) is disposed at the lower front portion of the washing machine body 100 and controls the motor 5, the drain valve 11, the water supply valve 12, the heat pump device 30, the blower 40, and the like. ing.

  In the present embodiment, the rotary shaft 4 is provided in the tilt direction at the rotation center of the rotary drum 1, and the axial center direction of the rotary drum 1 is tilted downward from the front side toward the back side. However, they may be arranged in the horizontal direction.

  The motor 5 is constituted by a direct current brushless motor or the like, and is controlled by a control means, a motor drive circuit (not shown) or the like so as to be rotated in the forward and reverse directions and variable in rotation speed, and a signal from a current detection circuit (not shown). Thus, the load applied to the motor 5, that is, the amount of laundry is detected.

For drying clothes, a heat pump device 3 that generates drying air to be supplied into the rotary drum 1
0, the circulation air supply passage 41, the circulation exhaust air passage 43, the blower 40, the rotary drum 1, and the heat pump device 30 form a circulation air passage 47.

  The blower 40 can control the rotational speed of the fan by a control means, a fan drive circuit (not shown), and the like, and can set the rotational speed according to the application. Moreover, although the heat pump apparatus 30 is installed in the lower part of the washing machine main body 100, you may install in the upper part.

  In the drying process, the high-temperature and low-humidity drying air heated by the heat pump device 30 is sent into the rotary drum 1 through the circulating air supply passage 41 and the blowout port 42 by the blower 40 and comes into contact with the wet laundry on the rotary drum 1. To make low-temperature and high-humidity air. This low-temperature, high-humidity air enters the heat pump device 30 from the circulation exhaust air passage 43, is dehumidified and heated in the heat pump device 30, and is sent to the rotating drum 1 again. Is possible.

  Note that a temperature sensor that detects the air temperature is attached to the circulation air passage 47, and a signal from the inlet side temperature sensor 45 installed on the inlet side of the heat pump device 30 and an outlet side temperature sensor installed on the outlet side. By sending a signal from 44 to the control means of the control device 50, air drying is predicted and the remaining time of the drying process is calculated. Specifically, when the difference between the outlet temperature and the inlet temperature decreases and falls below a set value, it is determined that the drying has progressed, and the remaining time is adjusted and the drying operation is stopped.

  A mode such as an operation course and various functions are selected by a user inputting from an input unit 14 provided at the upper front of the washing machine main body 100, and the control device 50 is based on the input information. Displayed on the above display means (not shown) to inform the user.

  FIG. 3 is a plan view showing the configuration of the heat pump device of the drum type washing and drying machine in the embodiment of the present invention.

  The heat pump device 30 is connected to the exhaust air passage connection portion 31a and the supply air passage connection portion 31b, and the blower 40 is connected to the heat pump device 30 on the air supply air passage connection portion 31b side.

  A compressor 32, a radiator 33, a decompressor 34, and a heat absorber 35 are provided in the outer shell 31, and these are connected by a pipe 36 and the like, and a refrigerant 37 is filled therein.

  First, the refrigerant 37 is changed to a high temperature and a high pressure by the compressor 32, and heat is exchanged with the air in the outer shell 31 by the radiator 33 to give heat and the refrigerant 37 liquefies. Thereafter, the pressure is reduced to low pressure by the decompressor 34, heat exchange is performed again with the air in the outer shell 31 by the heat absorber 35 placed next, and the air is dehumidified by removing the heat, and the refrigerant 37 is vaporized. The vaporized refrigerant 37 returns to the compressor 32 to form a series of refrigeration cycles.

  The dehumidified water is drained from the dehumidified water drain 48 to the outside by a pump 38 attached to the heat pump device 30. The pump 38 can be attached to a place other than the heat pump device 30. The operation of the pump 38 is controlled by turning on / off the power supply in a time period preset by the control device 50.

A plurality of refrigerant temperature sensors 39 are attached to the pipe 36, and the temperature of the internal refrigerant 37 can be detected from the temperature of the pipe 36 surface. The compressor 32 can change the number of rotations of the internal cylinder by a control means, a compressor drive circuit (not shown), and the like, and the compressor 32 is connected to the compressor drive circuit according to a signal from the refrigerant temperature sensor 39. The rotation speed can be controlled.

  The refrigerant temperature is detected by the refrigerant temperature sensor 39, but the state of the refrigerant cycle may be grasped by a pressure sensor or the like.

  The refrigerant 37 may be a general refrigerant such as an HFC (hydrofluorocarbon) refrigerant, an HFO (hydrofluoroolefin) refrigerant, or a carbon dioxide refrigerant.

  The operation and action of the drum type washing and drying machine configured as described above will be described below.

  FIG. 4 is a time chart showing an example of the dehumidified water draining operation of the drum type washing and drying machine in the embodiment of the present invention.

  In FIG. 4, as described above, in the drying process, the dehumidified water in the heat pump device is discharged out of the apparatus by the pump 38, but at the timing when the power of the pump 38 is turned on at a predetermined time, Reduce the speed. When the drainage is completed and the power supply of the pump 38 is turned off, the blower 40 rotates at the original rotational speed. Note that the reduction in the rotational speed of the blower 40 during the operation of the pump 38 includes lowering the rotational speed to a low rotational speed and stopping the rotational speed to zero.

  And when the rotation speed of the air blower 40 is lowered, the heat exchange amount in the heat radiator 33 and the heat absorber 35 may fluctuate, and the refrigeration cycle may be deviated from the ideal. Therefore, the compressor 32 is adjusted according to the operation of the air blower 40. The number of rotations is also reduced or returned, or stopped or returned.

  As described above, during the operation of the pump 38, the rotational speed of the blower 40 is reduced or stopped, and when the pump 38 stops operating, the rotational speed of the blower 40 is returned to the original state, thereby performing dehumidified water drainage. Since the pressure difference between the inside and outside of the heat pump device is relaxed, it is possible to prevent the outside air from being sucked in from the dehumidified water drain port 48 when the blower rotates and the drainage from being smoothly performed.

  The operation of the pump 38 is performed in a preset time period, but may be performed by a signal from a water level sensor (not shown) installed in the heat pump device 30.

  As described above, in the present embodiment, in the drying process, when the operation of the pump for draining the dehumidified water in the heat pump device is stopped, the blower is driven at a predetermined rotational speed, and during the operation of the pump, It is configured to reduce the rotation speed of the blower or stop the rotation. This makes it possible to smoothly drain the dehumidified water, is inexpensive, and efficiently demonstrates the performance of the heat pump device as specified. can do.

  As described above, the drum-type washing / drying machine according to the present invention adjusts the rotational speed of the blower when draining the dehumidified water in the heat pump device, so that the drainage is smoothly performed and is inexpensive, and the performance of the heat pump device. Can be efficiently performed as prescribed, and can be applied to other uses such as clothes dryers and washing dryers having a drying function.

DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Water tank 5 Motor 30 Heat pump apparatus 32 Compressor 33 Radiator 34 Decompressor 35 Heat absorber 36 Piping 38 Pump 40 Blower 47 Circulating air passage 100 Washing machine main body

Claims (4)

A washing machine body, a rotating drum for storing clothing,
A water tub that is supported in a vibration-proof manner in the washing machine body, and that rotatably includes the rotating drum;
A motor for rotating the rotating drum;
A heat pump device for generating drying air to be supplied into the rotating drum, a compressor, a radiator, a decompressor, and a heat absorber connected by piping;
A circulation air passage for connecting the water tank and the heat pump device to circulate drying air;
A blower for blowing air to the circulation air passage;
A pump for draining dehumidified water in the heat pump device;
Control means for controlling the motor, the compressor, the blower, the pump, etc., and sequentially controlling a series of steps such as washing, rinsing, dehydration, and drying;
In the drying process, the control means drives the blower at a predetermined rotational speed when the operation of the pump is stopped, and reduces the rotational speed of the blower during the operation of the pump. 2. The washing and drying machine according to claim 1, wherein the control unit stops the rotation speed of the blower during the operation of the pump in the drying step. The washing / drying machine according to claim 1 or 2, wherein when the rotation speed of the blower is decreased, the control means simultaneously decreases the rotation speed of the compressor. The washing and drying machine according to claim 3, wherein the control means simultaneously stops the rotation speed of the compressor when the rotation speed of the blower is reduced.