WO2015056416A1

WO2015056416A1 - Washing and drying machine

Info

Publication number: WO2015056416A1
Application number: PCT/JP2014/005044
Authority: WO
Inventors: 光徳谷口; 松田　眞一; 佳歩渡辺
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2013-10-17
Filing date: 2014-10-03
Publication date: 2015-04-23
Also published as: DE112014004776T5; CN105637137A; CN105637137B

Abstract

Provided is a washing and drying machine comprising the following: a water tank (101) that is elastically supported inside a housing (102); a drum (104) that is rotatably provided inside the water tank (101); a heat pump device that uses a pipeline to connect a compressor, a radiator (123), a throttle, and a heat absorber (123) so that a refrigerant circulates; a first air passage (119) in which the radiator (123) and the heat absorber (122) are disposed and which introduces drying air into the drum (104); an air blowing unit (121) for blowing air in the first air passage (119); a water temperature detection unit (115) for detecting the temperature of washing water inside the water tank (101); a warm-water wash setting unit (136d) for setting a warm-water wash; and a control unit (135) for controlling a washing operation and a drying operation. If a warm-water wash is carried out, prior to the drying operation the refrigerant does not flow into the compressor.

Description

Washing and drying machine

The present invention relates to a washing / drying machine in which clothes are washed and dried.

Conventionally, this type of washing / drying machine can dry laundry after washing in the same tank. A heat pump device is used for drying clothes (see, for example, Patent Document 1).

FIG. 21 is a system diagram of a conventional washer-dryer described in Patent Document 1. As shown in FIG. 21, the compressor 1051, the radiator 1052, the throttle means 1053, and the heat absorber 1054 are connected by a pipe line 1055 so that the refrigerant circulates, thereby forming a heat pump device 1056. In the air passage 1057 through which the drying air flows, a radiator 1052 that heats the drying air, a drum 1058 that holds a drying target such as clothes Z to be dried, and a heat absorber 1054 that cools and dehumidifies the drying air. Is provided. Drying air circulates through the air passage 1057. Drying air is blown into the air passage 1057 by the blower 1059. An arrow A indicates the flow direction of the drying air that flows through the air passage 1057. An arrow B indicates the flow direction of the refrigerant flowing through the pipe line 1055.

The drying air is heated by the radiator 1052 and is introduced into the drum 1058 as warm air. The drying air in contact with the garment Z in the drum 1058 takes moisture from the garment Z and dries the garment. The drying air is provided with sensible heat as an amount of heat for evaporation, and thus the temperature is lowered. The enthalpy of the drying air before and after coming into contact with the garment Z is substantially constant. The drying air that has become highly humid is cooled by the heat absorber 1054, deprived of latent heat, dewed and dehumidified. The drying air that has been dehumidified and whose absolute temperature has decreased is heated again by the radiator 1052.

On the other hand, in the heat pump cycle, the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 1051 is deprived of heat by the radiator 1052, and condensed and liquefied. The high-pressure liquid refrigerant exiting the radiator 1052 is decompressed by the throttle means 1053, becomes a low-temperature and low-pressure liquid refrigerant, enters the heat absorber 1054, vaporizes by removing heat from the drying air, and is compressed as a gas refrigerant. Return to machine 1051.

In the heat pump device 1056, it is known that the drying performance at the start of the drying operation is lowered due to the “sleeping phenomenon” in which the refrigerant dissolves in the lubricating oil inside the compressor 1051 when stopped. Therefore, it has been proposed to heat the compressor before starting the drying operation and raise the temperature of the lubricating oil inside the compressor so that the refrigerant dissolved in the lubricating oil is discharged from the lubricating oil (for example, , See Patent Document 2).

Generally, in order to enhance the washing effect at the time of washing, it is known that the washing water is heated and washed with warm water. When washing with hot water by heating with hot water or a heater, the temperature in the drum and the water tank rises with washing water at a predetermined temperature (for example, 40 to 50 ° C.). In the laundry dryer, before the drying operation, after the washing water used in the washing process with heated hot water is drained, an intermediate dehydration process is performed to squeeze out dirt and detergent contained in laundry such as clothes. And the drum rotates at a high speed (eg, 900 rpm).

However, in the conventional configuration, when the drum rotates at high speed, a heated wind is generated in the water tank. An air passage that blows drying air into the water tank during the drying operation is connected so as to communicate with the water tank, and a heat absorber that is disposed in the air path through which the heated air flows. And the radiator is heated.

During the washing operation, the heat pump device is stopped, and the refrigerant in the heat pump cycle that stays in the pipeline outside the compressor is heated by the heat absorber and heat radiator and the pressure rises, so that it becomes a room temperature compressor. Inflow.

Therefore, when the compressor is stopped, the refrigerant in the compressor dissolves in the lubricating oil. In addition, by performing warm water cleaning, the refrigerant flows into the stopped compressor before the drying operation. As a result, there is a problem that, at the start of the drying operation, the amount of refrigerant in the heat pump cycle is insufficient and good drying performance cannot be obtained.

JP 2005-52533 A JP 2007-61264 A

The present invention solves the conventional problems, and provides a laundry dryer that improves the drying performance at the start of the drying operation when washing with warm water during washing.

The washing / drying machine of the present invention includes a water tank elastically supported in a housing and a drum rotatably provided in the water tank. In addition, a heat pump device in which a refrigerant is circulated through a compressor, a radiator, a constricted portion, and a heat absorber, and a radiator and a heat absorber are arranged, and a drying air is introduced into the drum. The air path. Moreover, the ventilation part which ventilates to the 1st air path, the water temperature detection part which detects the temperature of the washing water in a water tank, the warm water washing | cleaning setting part which sets the washing by warm water, and the control which controls washing operation and drying operation A part. When the hot water cleaning is set by the hot water cleaning setting unit and the hot water cleaning is performed, the refrigerant is prevented from flowing into the compressor before the drying operation.

This makes it possible to properly maintain the refrigerant in the heat pump cycle even when washing with warm water during washing. Therefore, the heat pump cycle can be quickly brought up to an optimum state, and the drying performance at the start of the drying operation can be improved.

The washing / drying machine of the present invention can improve the drying performance at the start of the drying operation when washing with warm water during washing.

FIG. 1 is a partially cutaway configuration diagram of a washing / drying machine according to Embodiment 1 of the present invention. FIG. 2 is a system diagram of the washing / drying machine according to Embodiment 1 of the present invention. FIG. 3 is a configuration diagram of the heat pump device of the washing / drying machine according to Embodiment 1 of the present invention. FIG. 4 is a cross-sectional view of a main part of the compressor of the heat pump device of the washing / drying machine according to Embodiment 1 of the present invention. FIG. 5 is a block configuration diagram of the washing / drying machine according to Embodiment 1 of the present invention. FIG. 6 is a time chart showing the operation of the washing and drying machine in the first embodiment of the present invention. FIG. 7 is a partially cutaway configuration diagram of another example of a washing and drying machine according to Embodiment 1 of the present invention. FIG. 8 is a time chart showing the operation of the washing / drying machine of another example according to Embodiment 1 of the present invention. FIG. 9 is a partially cutaway configuration diagram of the washing / drying machine according to Embodiment 2 of the present invention. FIG. 10 is a system diagram at the time of the dehydrating operation of the washing / drying machine in Embodiment 2 of the present invention. FIG. 11 is a system diagram of the washing / drying machine according to Embodiment 2 of the present invention during the drying operation. FIG. 12 is a block diagram of a washing / drying machine according to Embodiment 2 of the present invention. FIG. 13 is a system diagram at the time of the dehydrating operation of the washing / drying machine in Embodiment 3 of the present invention. FIG. 14 is a system diagram of the washing / drying machine according to Embodiment 3 of the present invention during the drying operation. FIG. 15 is a configuration diagram in which a part of the washing / drying machine according to Embodiment 4 of the present invention is cut away. FIG. 16 is a system diagram of the washing / drying machine in the dehydrating operation according to the fourth embodiment of the present invention. FIG. 17 is a system diagram at the time of a drying operation of the washing / drying machine according to Embodiment 4 of the present invention. FIG. 18 is a block diagram of a washing / drying machine according to Embodiment 4 of the present invention. FIG. 19 is a system diagram of the washing / drying machine in the dehydrating operation according to the fifth embodiment of the present invention. FIG. 20 is a system diagram of the washing dryer in the fifth embodiment of the present invention during the drying operation. FIG. 21 is a system diagram 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 these embodiments.

(Embodiment 1)
FIG. 1 is a partially cutaway configuration diagram of a washing / drying machine according to Embodiment 1 of the present invention. FIG. 2 is a system diagram of the system. FIG. 3 is a configuration diagram of the heat pump apparatus. FIG. 4 is a cross-sectional view of a main part of the compressor of the heat pump device. FIG. 5 is a block diagram of the same. FIG. 6 is a time chart showing the operation.

1 to 6, the water tank 101 is elastically supported in the housing 102 by a plurality of suspension mechanisms 103. The drum 104 has an insertion port (not shown) through which laundry such as clothes Z is put in and out on the front side, is configured in a bottomed cylindrical shape, and is disposed in the water tank 101. The drum 104 is provided so as to be rotatable about a rotation shaft 104a and accommodates laundry such as clothes Z.

A large number of holes 105 are provided in the peripheral side wall of the drum 104 over the entire periphery. Baffles 106 for lifting the laundry in the direction of rotation of the drum 104 are provided at a plurality of locations on the inner side wall of the drum 104. The water tank 101, the drum 104, and the rotating shaft 104a are provided so as to be inclined forwardly at an angle θ (for example, 10 to 20 °) with respect to the horizontal.

A motor 107 that rotationally drives the drum 104 is provided outside the rear surface of the water tank 101 so as to rotate the drum 104 forward and backward. The motor 107 is configured by a brushless DC motor or the like, and is configured so that the rotation speed can be freely changed by inverter control.

A door 108 that opens and closes the inlet of the drum 104 is provided on the front surface of the housing 102. A front opening (not shown) of the water tank 101 facing the charging port of the drum 104 is sealed and connected to the housing 102 by a flexible packing 109 that can be expanded and contracted. The door 108 is provided with a transparent window so that the inside of the drum 104 can be seen from the outside.

When the door 108 is closed, the packing 109 provided at the front opening of the water tank 101 comes into contact with the inner surface of the door 108. Thereby, the inside of the water tank 101 becomes a watertight and airtight space, and water and air are prevented from leaking to the outside when the steps of washing, rinsing, dehydration and drying are executed.

In the housing 102, a water supply valve 110 for controlling the supply of tap water to the water tank 101 is provided. A water supply path 111 communicating with the water tank 101 is connected to the water supply valve 110 through a detergent case (not shown). The water supply path 111 is connected to a water pipe, and the water supply valve 110 is opened and closed to supply and stop tap water into the water tank 101.

Further, a drain valve 112 for draining the washing water in the water tank 101 is provided below the rear part of the water tank 101. When the drain valve 112 is opened and closed, the washing water in the water tank 101 is drained and stopped through the drain path 113.

A washing water heater (washing water heating unit) 114 for heating the washing water is provided behind the bottom of the water tank 101. The washing water heater 114 is formed by bending a sheathed heater into a substantially U shape, and is attached along the bottom surface of the water tank 101 in the direction in which the rotation shaft 104a extends.

A space is provided between the washing water heater 114 and the bottom surface of the water tank 101. When the washing water is accumulated in the water tank 101, the washing water heater 114 is located below the surface of the washing water and is immersed in the washing water to heat the washing water. The temperature of the washing water heated by the washing water heater 114 is detected by a water temperature detection unit 115 configured with a thermistor or the like attached to the bottom of the water tank 101.

The amount of washing water stored in the water tank 101 is detected by the water level detection unit 116. The water level detection part 116 has a diaphragm inside. The water level detection unit 116 includes a pressure sensor that detects pressure from the deformation amount of the diaphragm that deforms when pressure is applied, and detects the water level of the wash water supplied to the water tank 101.

An exhaust port 117 is provided on the peripheral side wall at the upper front of the water tank 101. An air outlet 118 is provided on the back surface of the water tank 101. The exhaust port 117 and the air blowing port 118 are connected in communication by an air passage 119 extending from the front upper side of the water tank 101 toward the rear side.

The air path 119 is provided with a filter 120, a blower (blower unit) 121, a heat absorber 122, and a radiator 123. The filter 120 captures lint passing through the air path 119 together with the drying air. The blower (blower unit) 121 blows drying air into the drum 104 through the water tank 101. The heat absorber 122 cools and dehumidifies the drying air flowing through the air path 119. The radiator 123 heats the drying air dehumidified by the heat absorber 122.

The heat absorber 122 and the radiator 123 are connected to the compressor 125 by a pipe line 124 through which the refrigerant flows. In the heat pump device 141, the compressor 125, the radiator 123, the throttle unit 142, and the heat absorber 122 are connected by a pipe 124 so that the refrigerant circulates. The compressor 125 compresses a refrigerant (for example, R134a). The radiator 123 radiates heat of the compressed high-temperature and high-pressure refrigerant. The throttle 142 is composed of a capillary tube, an expansion valve, or the like for decompressing high-pressure refrigerant. In the heat absorber 122, the refrigerant whose pressure has been reduced to a low pressure takes heat from the surroundings.

The heat absorber 122 and the radiator 123 are configured by fin tube heat exchangers. The end portions of the heat absorber 122 and the radiator 123 are connected by an end plate 123 a, and a space 123 b is provided between the heat absorber 122 and the radiator 123.

The conduit 124 through which the refrigerant flows is formed of, for example, a copper tube. In order to form a flow path for dry air, a duct 124 passes through a plurality of fins arranged in parallel at predetermined intervals. The fin is formed of, for example, a flat plate made of aluminum having a thickness of 0.08 to 0.2 mm that has been punched. The fin pitch is formed to be about 1.2 mm, for example.

The compressor 125 includes a compression mechanism 127 that compresses the refrigerant and a compressor motor 128 that drives the compression mechanism 127 in a vertical cylindrical casing 126. The compressor motor 128 is constituted by a direct current motor so that the rotational speed can be freely changed. The compressor motor 128 has a stator 128a fixed to the inner surface of the casing 126, and a rotor 128b that is rotatably provided inside the stator 128a. A crankshaft 128c extending in the vertical direction is attached to the compressor motor 128 at the rotation center of the rotor 128b.

The compression mechanism 127 is a rotary type. The compression mechanism 127 is provided below the compressor motor 128 and is connected to the compressor motor 128 via a crankshaft 128c. A piston 127a eccentrically fixed to the crankshaft 128c rotates eccentrically in the cylinder 127b, and compresses the refrigerant sucked from the suction port 124a of the conduit 124.

The compressor 125 is driven by a compressor motor 128. The refrigerant is pressurized by the compression mechanism 127 to become a high-temperature and high-pressure gas refrigerant, discharged from the discharge port 124 b of the pipe line 124, and sent to the radiator 123.

In the radiator 123, the refrigerant is cooled and condensed by the drying air blown to the air passage 119 by the blower 121, and becomes a low-temperature and high-pressure liquid refrigerant. The liquid refrigerant is depressurized by the throttle unit 142 and sent to the heat absorber 122. In the heat absorber 122, the refrigerant comes into contact with the laundry such as the clothes Z in the drum 104, is heated by moist and hot air, evaporates, becomes a low-temperature and low-pressure gas refrigerant, and is sucked into the compressor 125 again. Pressure.

Lubricating oil 129 is stored at the bottom of the casing 126. A crankcase heater (heating unit) 130 for heating the compressor 125 is provided below the compressor 125. The crankcase heater 130 is attached so as to surround the casing 126 of the compressor 125. The crankcase heater 130 may be attached so as to heat from the upper part to the lower part of the compressor 125 in order to quickly raise the temperature of the compressor 125.

2, an arrow A indicates the flow direction of the drying air that flows through the air passage 119. An arrow B indicates the flow direction of the refrigerant flowing through the pipe 124.

A compressor temperature detector 131 is provided on the outer periphery of the casing 126 of the compressor 125. The compressor temperature detection unit 131 is configured with a thermistor or the like, and detects the temperature of the compressor 125.

A first refrigerant temperature detection unit (refrigerant temperature detection unit) 132 a is provided in a pipe line 124 between the compressor 125 and the radiator 123. The first refrigerant temperature detection unit 132a is composed of a thermistor or the like, and detects the temperature of the refrigerant discharged from the compressor 125.

A second refrigerant temperature detector (refrigerant temperature detector) 132b is provided in the refrigerant condensing part between the refrigerant inflow part and the outflow part of the radiator 123. The second refrigerant temperature detection unit 132b is composed of a thermistor or the like, and detects the temperature of the refrigerant from the inflow portion where the refrigerant flows into the radiator 123 to the outflow portion where the refrigerant flows out of the radiator 123.

The air path 119 is provided with a first temperature detection unit 133 a and a second temperature detection unit 133 b that detect the temperature of the drying air flowing through the air path 119. The first temperature detection unit 133a is composed of a thermistor or the like, and detects the temperature of the drying air flowing into the drum 104 from the air blowing port 118. The second temperature detection unit 133b is composed of a thermistor or the like, and detects the temperature of the drying air flowing out of the drum 104 from the exhaust port 117. From the outputs of the first temperature detection unit 133a and the second temperature detection unit 133b, the dry state of the laundry such as the clothes Z in the drum 104 is detected.

The control unit 135 that controls the washing operation and the drying operation is provided in the upper part of the front surface in the housing 102. An operation display unit 136 is attached to the upper front of the housing 102. The operation display unit 136 is provided with an operation unit 136a that performs manual operation of driving and a display unit 136b that displays setting contents, driving conditions, and the like.

In addition to the power switch 136c, the operation unit 136a is provided with a hot water washing button (hot water washing setting unit) 136d for washing with heated washing water, other various setting buttons (not shown), and the like. The user can arbitrarily select a driving course such as washing and drying by the operation unit 136a and set the driving content.

The operation and action of the washing / drying machine configured as described above will be described below. The washing operation is performed in the order of the washing step, the intermediate dehydration step, the rinsing step, and the dehydration step, and the drying operation can be performed following the dehydration step.

When performing the washing operation, first, the door 108 is opened, and the laundry such as the clothes Z is put into the drum 104. The power switch 136c of the operation unit 136a provided on the upper front surface of the housing 102 is turned on, and a selection of an operation course is input by using various setting buttons, and the time of each process is input as necessary. Based on the set content, the operation can be started and the controller 135 can execute a series of operations from washing to drying.

First, in the washing process, the cloth amount detection unit 137 detects the amount of laundry such as clothes Z put in the drum 104. The cloth amount detection unit 137 can detect the amount of laundry from the current value of the motor 107 when the drum 104 is rotated. A preset amount of water is supplied according to the amount of laundry detected by the cloth amount detection unit 137. When the water level detection unit 116 detects the amount of water in the water tank 101 and a predetermined amount of water is supplied, the water supply valve 110 is closed.

When water and detergent are supplied into the water tank 101 through the water supply path 111, the drum 104 is driven to rotate by the motor 107, and washing by a stirring operation is started. When the drum 104 is rotated at a predetermined speed (for example, 50 rpm), the laundry such as the clothes Z is lifted in the rotation direction of the drum 104 by the baffle 106 provided on the inner peripheral surface of the drum 104. Falls from above. Thus, washing by tapping is performed for a predetermined time.

After the stirring step, the drain valve 112 is opened, and the washing water in the water tank 101 is drained. An intermediate dehydration step is performed in which the drum 104 is rotated at a high speed (for example, 900 rpm), and dirt, detergent, and the like contained in the laundry such as clothing Z are dehydrated together with water. Next, the water supply valve 110 is opened, a new amount of water is supplied into the water tank 101, the drum 104 is rotated at a predetermined speed (for example, 50 rpm), and the rinsing process is performed for a predetermined time.

After the rinsing process is performed a predetermined number of times, the washing water in the water tank 101 is drained. The drum 104 is rotated at a high speed (for example, 1500 rpm), a dehydration process for dehydrating moisture contained in the laundry, remaining detergent, and the like is finally performed, and the washing operation is completed.

When the drying operation is performed after the washing operation, the process proceeds to the drying process after the dehydration process is completed. In the drying process, the drum 104 is rotated at a predetermined speed (for example, 50 rpm), and the laundry is stirred in the drum 104. At the same time, the blower 121 and the heat pump device 141 are operated, and the blowing and circulation of the drying air into the drum 104 and the compression of the refrigerant by the compressor 125 are started.

In the heat pump device 141, the compressor motor 128 of the compressor 125 is driven, the refrigerant is compressed by the compression mechanism 127, and the refrigerant is discharged from the compressor 125 by this pressure. The refrigerant discharged from the compressor 125 flows through the pipe 124 and circulates through the radiator 123, the throttle unit 142, the heat absorber 122, and the compressor 125. The heat of the compressed refrigerant flows into the radiator 123 and is radiated to the air that is disposed in the radiator 123 and is in contact with the fins provided in the pipe 124. Thus, the drying air flowing through the air path 119 is heated.

The heated drying air is supplied from the blower opening 118 into the drum 104, takes moisture from the laundry, becomes moist air, and is discharged from the exhaust outlet 117 to the air passage 119. As the laundry is dried, lint such as lint is generated from the laundry. The drying air discharged from the exhaust port 117 passes through the filter 120, and lint contained in the air is captured by the filter 120.

The drying air from which the lint has been removed by the filter 120 is depressurized by the throttle unit 142, and when passing through the heat absorber 122 through which the low-pressure refrigerant flows, sensible heat and latent heat are taken away and dehumidified. Condensed water generated by dehumidification is dropped into a water storage unit (not shown). The drying air that has been dehumidified and dried passes through the radiator 123 and is heated. The dehumidified condensed water is drained out of the washing dryer through the drain valve 112.

In the drying process, the first temperature detection unit 133a and the second temperature detection unit 133b detect the temperature of the drying air flowing through the air path 119. The first temperature detector 133a detects the temperature of the drying air flowing into the drum 104, and the second temperature detector 133b detects the temperature of the drying air flowing out of the drum 104. From these detections, the dryness of the laundry in the drum 104 is detected, and when the predetermined dryness is detected, the drying process ends.

On the other hand, in the heat pump device 141, the heat of the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 125 is deprived by the drying air passing through the radiator 123 and is condensed and decompressed by the throttle unit 142. It becomes a low-pressure liquid refrigerant. The liquid refrigerant is deprived of heat from the drying air by the heat absorber 122 and is vaporized to return to the compressor 125 again as a low-temperature and low-pressure gas refrigerant.

The drive of the compressor motor 128 is controlled so that the temperature of the refrigerant (refrigerant condensation temperature) detected by the second refrigerant temperature detector 132b is maintained within a predetermined temperature range (eg, 60 ° C. to 70 ° C.). Thus, the operation of the compressor 125 is stabilized. This realizes a safe and stable heat pump cycle.

Further, in order to ensure insulation of the compressor motor 128, compression is performed so that the temperature of the refrigerant discharged from the compressor 125 detected by the first refrigerant temperature detection unit 132a is equal to or lower than a predetermined temperature (for example, 100 ° C.). The drive of the machine motor 128 is controlled.

Next, a case where washing is performed with warm water and then drying is described. At the start of washing, the user selects “washing drying course” with the operation unit 136a of the operation display unit 136, selects “warm water washing” with the hot water washing button 136d of the operation unit 136a, and sets the temperature of the washing water (for example, , 40 ° C.). Washing with warm water is easy to remove stains, can increase the cleaning power, and is advantageous for washing when the water temperature is low.

The cloth amount detector 137 detects the amount of laundry put into the drum 104. An amount of washing water set according to the amount of laundry is supplied into the aquarium 101. The controller 135 detects the temperature of the wash water stored in the water tank 101 by the water temperature detector 115 before the start of the washing operation. The control unit 135 compares the set temperature of the washing water with the temperature detected by the water temperature detection unit 115, controls the energization of the washing water heater 114, and heats the washing water to the set temperature.

As shown in FIG. 6, in the washing process, washing water is supplied into the water tank 101 and the water level detection unit 116 detects a preset water level. When the water temperature detector 115 detects the temperature of the washing water, the washing water heater 114 is energized, and the washing water heater 114 heats the washing water until the washing water reaches a set temperature. The timing for starting energization of the washing water heater 114 is preferably a state in which the washing water heater 114 is at least in contact with the washing water and is submerged in the washing water.

It should be noted that the washing water heater 114 may be energized after a set amount of washing water is supplied into the water tank 101 according to the amount of laundry. When the set amount of wash water is supplied to the water tank 101, washing by the stirring operation can be started even before the wash water is heated to the set temperature.

The washing water is heated from the ambient temperature T1 (for example, 20 ° C.) due to the start of energization of the washing water heater 114, and when the temperature reaches the temperature T2 (for example, 40 ° C.) set in the “warm water washing”, the energization is performed. Stop.

At this time, if the temperature of the washing water becomes higher than the temperature detected by the water temperature detection unit 115 before the start of the washing operation, the crankcase heater 130 is energized until the temperature of the compressor 125 reaches the maximum value of the water temperature during washing. Heat. If the temperature of the compressor 125 is substantially the same as the ambient temperature T1 (for example, 20 ° C.), the temperature difference C from the set temperature T2 (for example, 40 ° C.) is 20 ° C.

When the intermediate dehydration process is executed in a state where the temperature in the water tank 101 has increased in the washing process with the heated washing water, the heated air in the water tank 101 flows through the air passage 119 by the high-speed rotation of the drum 104. The heat absorber 122 and the radiator 123 arranged in the air path 119 are heated. When the heat absorber 122 and the radiator 123 in the heat pump cycle are heated, the pressure of the refrigerant rises and the refrigerant flows into the compressor 125.

In the crankcase heater 130, the temperature of the compressor 125 becomes the maximum temperature of the washing water before the start of the drying operation, that is, before the compressor 125 is driven in the drying process, from the intermediate dehydration process to the dehydration process. Until the compressor 125 is heated.

Thereby, the temperature in the air passage 119 rises due to the heat of the heated washing water, and the refrigerant in the heat pump cycle flows into the compressor 125 even if the heat absorber 122 and the radiator 123 are heated in the intermediate dehydration process. do not do. Even if the refrigerant in the heat pump cycle flows into the compressor 125, the compressor 125 is heated before the start of the drying operation, so that the refrigerant staying in the compressor 125 can be returned to the heat pump cycle. . Therefore, the refrigerant can be held in the heat pump cycle, and the drying performance at the start of the drying operation can be improved.

By providing the water temperature detection unit 115 for detecting the temperature of the washing water at the bottom of the water tank 101, the temperature before starting the washing operation of the washing water stored in the water tank 101 and the temperature at the time of washing or rinsing are the same water temperature. The detection part 115 can detect. Therefore, the temperature before the start of the washing operation and the temperature at the time of washing or rinsing can be compared with high accuracy.

In addition, when using the remaining water of a bath for washing water, the water temperature detection part 115 detects the temperature of the bath water supplied to the water tank 101 and stored. In this case, when the temperature of the bath water supplied to the water tank 101 is lower than the temperature set by the hot water cleaning, the washing water heater 114 can heat the bath water to the set temperature.

In addition, when the temperature of the bath water heated to the set temperature is higher than the temperature detected by the water temperature detection unit 115 before the start of the washing operation, the refrigerant is compressed in the intermediate dehydration process or the dehydration process by heating the compressor 125. Even if it flows into the machine 125, the refrigerant can be returned into the heat pump cycle before the drying operation is started. Then, the remaining water of the bath can be used effectively, and the bath water having the remaining heat can be heated to a predetermined temperature with less energy to enhance the cleaning effect.

FIG. 7 is a partially cutaway configuration diagram of another example of a washing and drying machine according to the present embodiment. A hot water heater 143 that supplies heated hot water to the water tank 101 is provided so as to be connectable. A water heater connecting portion 144 is provided in the water supply path 111 connected to the water supply. A hot water supply valve 145 for supplying and stopping hot water from the water heater 143 to the water tank 101 is provided. When “warm water washing” and “hot water supply” are set, the controller 135 supplies hot water heated to a predetermined temperature from the water heater 143 to the water tank 101.

In the washing process, the water supply valve 110 is opened to supply tap water, and the hot water supply valve 145 is opened to supply hot water from the water heater 143. That is, the hot water and tap water from the water heater 143 are mixed and supplied to the water tank 101. The temperature of the mixed water Y flowing through the water supply path 111 is detected by the water supply temperature detection unit 146. The feed water temperature detection unit 146 is composed of a thermistor or the like, and is provided in the feed water path 111 to detect the temperature of the mixed water Y flowing into the water tank 101.

The control unit 135 controls the water supply valve 110 and the hot water supply valve 145 from the output of the water supply temperature detection unit 146 so that the temperature of the mixed water Y becomes the set temperature. Further, the temperature of the washing water accumulated in the water tank 101 is detected by the water temperature detection unit 115, and control is performed so that the temperature of the washing water in the water tank 101 becomes the set temperature in preference to the output of the water supply temperature detection unit 146. Unit 135 controls water supply valve 110 and hot water supply valve 145.

In addition to the above, the temperature of the washing water stored in the water tank 101 may be heated to a set temperature by the water heater 143 to supply hot water. When the set temperature is high, the washing water heater 114 may be used in combination. In the rinsing process, hot water may be supplied from the hot water heater 143 and rinsed with warm water.

When the hot water heater 143 is used, the washing water heater 114 for heating the washing water in the water tank 101 is not necessarily required. The temperature of the washing water in the water tank 101 before washing operation and at the time of washing or rinsing is determined. It only has to be detected and compared.

FIG. 8 is a time chart showing the operation of another example of the washer / dryer in the present embodiment. Here, the temperature of the washing water is detected during the rinsing process.

The washing water (rinsing water) supplied in the rinsing process is heated from the ambient temperature T1 (for example, 20 ° C.) by energizing the washing water heater 114, and the temperature rises. When the washing water (rinsing water) reaches a temperature T2 (for example, 40 ° C.) set when setting the rinsing temperature for warm water washing, the energization to the washing water heater 114 is stopped.

At this time, if the temperature of the washing water is higher than the temperature detected by the water temperature detection unit 115 before the start of the washing operation, the crankcase heater 130 is energized until the temperature of the compressor 125 reaches the maximum washing water temperature. Heat the washing water. If the temperature of the compressor 125 is substantially the same as the ambient temperature T1 (for example, 20 ° C.), the temperature difference D from the set temperature T2 (for example, 40 ° C.) is 20 ° C.

This makes it possible to retain the refrigerant in the heat pump cycle at the start of the drying operation even when warm water is used in the rinsing process, as in the case of performing warm water cleaning in the washing process. Therefore, the heat pump cycle can be quickly brought up to an optimum state, and the drying performance at the start of the drying operation can be improved.

It should be noted that the temperature of the washing water may be detected in at least one step of washing or rinsing, or both steps. Moreover, it is preferable that the timing for detecting the water temperature is detected after a predetermined time from the start of the water supply for washing or rinsing, and is detected in a state where the washing water in the washing or rinsing process is heated to a predetermined temperature.

As described above, the washing and drying machine according to the present embodiment includes the water tank 101 elastically supported in the housing 102 and the drum 104 rotatably provided in the water tank 101. Further, a heat pump device 141 in which a refrigerant is circulated through the compressor 125, the radiator 123, the throttle unit 142, and the heat absorber 122, and the radiator 123 and the heat absorber 122 are arranged so that the refrigerant circulates. And an air passage 119 which is a first air passage for introducing drying air. Moreover, the ventilation part 121 which ventilates the air path 119 which is a 1st air path, and the water temperature detection part 115 which detects the temperature of the wash water in the water tank 101 are provided. Moreover, the hot water washing | cleaning setting part 136d which sets washing with warm water, and the control part 135 which controls a washing operation and a drying operation are provided. When the hot water cleaning is set by the hot water cleaning setting unit 136d and the hot water cleaning is performed, the refrigerant is prevented from flowing into the compressor before the drying operation. As a result, even when washing is performed with warm water, the refrigerant in the heat pump cycle can be retained at the start of the drying operation, and the heat pump cycle can be quickly brought up to an optimal state to improve the drying performance at the start of the drying operation. Can be improved.

In addition, the washing and drying machine of the present embodiment further includes a heating unit 130 that heats the compressor 125. The control unit 135 detects the temperature of the washing water at the time of washing or rinsing and before the start of the washing operation, and starts the drying operation when the temperature of the washing water at the time of washing or rinsing is higher than the temperature before the washing operation is started. Before, the compressor 125 is heated. Thereby, when the temperature of the heated washing water is higher than the temperature of the compressor 125, the refrigerant can be prevented from flowing into the compressor 125 by heating the compressor 125. Further, even when the refrigerant flows into the compressor 125 in the intermediate dehydration process or the dehydration process, the refrigerant can be returned to the heat pump cycle before the drying operation is started. Therefore, even when washing is performed with warm water, the refrigerant in the heat pump cycle can be retained at the start of the drying operation, and the heat pump cycle can be quickly brought to an optimum state to improve the drying performance at the start of the drying operation. Can be made.

Further, the washing / drying machine of the present embodiment is provided with a washing water heating unit 114 for heating the washing water in the water tank 101. When the temperature of the washing water is lower than the set temperature set by the hot water washing setting unit 136d, the control unit 135 heats the washing water to the set temperature. Thereby, the temperature of the washing water at the time of warm water washing can be set to an optimum temperature according to the type and nature of the laundry and the purpose, and it is possible to easily remove dirt and enhance the washing power. In addition, when the remaining water in the bath is used, if the temperature is lower than the temperature set in the hot water cleaning, the bath can be heated up to the set temperature, the remaining water in the bath can be used effectively, and the bath has residual heat. The cleaning effect can be enhanced by heating water to a predetermined temperature with less energy.

In the present embodiment, the compressor temperature detection unit 131 detects the temperature of the compressor 125, but the first refrigerant temperature detection attached to the pipe 124 in the vicinity of the refrigerant discharged from the compressor 125. The part 132a may be substituted.

Further, the temperature at which the compressor 125 is heated is not necessarily the same as the maximum temperature of the washing water detected by the water temperature detector 115, so that the refrigerant pressure in the heat pump cycle is balanced and maintained. What is necessary is just to be heated.

(Embodiment 2)
FIG. 9 is a partially cutaway configuration diagram of the washing / drying machine according to Embodiment 2 of the present invention. FIG. 10 is a system diagram of the dehydration operation. FIG. 11 is a system diagram of the drying operation. FIG. 12 is a block diagram of the same.

9 to 12, the water tank 201 is elastically supported in the housing 202 by a plurality of suspension mechanisms 203. The drum 204 has a loading port (not shown) for taking in and out the laundry such as clothes Z on the front side, is configured in a bottomed cylindrical shape, and is disposed in the water tank 201. The drum 204 is provided so as to be rotatable about a rotation shaft 204a and accommodates laundry such as clothes Z.

A large number of holes 205 are provided in the peripheral side wall of the drum 204 over the entire periphery. Baffles 206 for lifting the laundry in the rotation direction of the drum 204 are provided at a plurality of locations on the inner side wall of the drum 204. The water tank 201, the drum 204, and the rotating shaft 204a are provided so as to be inclined forwardly at an angle θ (for example, 10 to 20 °) with respect to the horizontal.

A motor 207 that rotationally drives the drum 204 is provided outside the rear surface side of the water tank 201 so as to rotate the drum 204 forward and backward. The motor 207 is configured by a brushless DC motor or the like, and is configured such that the rotation speed can be freely changed by inverter control.

A door 208 that opens and closes the inlet of the drum 204 is provided on the front surface of the housing 202. A front opening (not shown) of the water tank 201 facing the charging port of the drum 204 is sealed and connected to the housing 202 by a flexible packing 209 that can be expanded and contracted. The door 208 is provided with a transparent window so that the inside of the drum 204 can be seen from the outside.

When the door 208 is closed, the packing 209 provided at the front opening of the water tank 201 comes into contact with the inner surface of the door 208. Thereby, the inside of the water tank 201 becomes a watertight and airtight space, and water and air are prevented from leaking to the outside when the washing, rinsing, dehydrating and drying processes are executed.

In the housing 202, a water supply valve 210 for controlling the supply of tap water to the water tank 201 is provided. A water supply path 211 that communicates with the water tank 201 is connected to the water supply valve 210 via a detergent case (not shown). The water supply path 211 is connected to the water pipe, and the water supply valve 210 is opened and closed to supply and stop the tap water into the water tank 201.

Further, a drain valve 212 for draining the washing water in the water tank 201 is provided below the rear part of the water tank 201. When the drain valve 212 is opened and closed, the washing water in the water tank 201 is drained and stopped through the drain path 213.

A washing water heater 214 for heating the washing water is provided behind the bottom of the water tank 201. The washing water heater 214 is formed by bending a sheathed heater into a substantially U shape, and is attached along the bottom surface of the water tank 201 in the direction in which the rotating shaft 204a extends.

A space is provided between the washing water heater 214 and the bottom surface of the water tank 201. When the washing water is stored in the water tank 201, the washing water heater 214 is positioned below the surface of the washing water and is immersed in the washing water to heat the washing water. The temperature of the washing water heated by the washing water heater 214 is detected by a water temperature detection unit 215 configured with a thermistor or the like attached to the bottom of the water tank 201.

The amount of washing water stored in the water tank 201 is detected by the water level detection unit 216. The water level detection unit 216 has a diaphragm inside. The water level detection unit 216 is configured by a pressure sensor or the like that detects pressure from the deformation amount of the diaphragm that deforms when pressure is applied, and detects the water level of the washing water supplied to the water tank 201.

An exhaust port 217 is provided on the peripheral side wall of the upper front portion of the water tank 201. An air outlet 218 is provided on the back surface of the water tank 201. The exhaust port 217 and the blower port 218 are connected to each other through an air passage 219. The air path 219 includes a first air path 219a, a second air path 219b, a third air path 219c, and a heat pump device 220.

The air passage 219 is provided with a heat absorber 221 and a radiator 222 of the heat pump device 220. The air path 219 is disposed so that the drying air flows from the heat absorber 221 to the radiator 222. The heat absorber 221 and the radiator 222 are connected to the compressor 224 by a pipe line 223 through which the refrigerant flows.

The first air passage 219a connects the heat pump device 220 and the air blowing port 218 in communication. The first air passage 219 a is provided with a blower 225 that blows drying air into the drum 204 via the water tank 201. The blower 225 is disposed between the radiator 222 of the heat pump device 220 and the blower port 218.

The second air passage 219b connects the exhaust port 217 and the heat pump device 220 in communication. The second air passage 219b extends from the front side above the outside of the water tank 201 toward the rear side. The third air passage 219 c is provided so as to branch from the second air passage 219 b and communicate with the outside of the housing 202 from above the housing 202.

An air path switching device 226 is provided at a branch portion between the second air path 219b and the third air path 219c. The air path switching device 226 can switch the air path 219 to the second air path 219b or the third air path 219c. When the second air passage 219b is closed, the third air passage 219c is opened (see FIG. 2), and when the second air passage 219b is opened, the third air passage 219c is closed. (See FIG. 11).

The second air passage 219b is provided with a filter 227 that captures lint that passes through the second air passage 219b together with the drying air. The filter 227 is disposed between the exhaust port 217 and the air path switching device 226, that is, upstream of the third air path 219c. The filter 227 is configured so that the lint that has passed through the exhaust port 217 is not discharged outside the washing / drying machine via the third air passage 219c.

In the heat pump device 220, the compressor 224, the radiator 222, the throttle unit 228, and the heat absorber 221 are connected by a pipe line 223 so that the refrigerant circulates. The compressor 224 compresses a refrigerant (for example, R134a). The radiator 222 radiates the heat of the compressed high-temperature and high-pressure refrigerant. The throttle unit 228 includes a capillary tube, an expansion valve, or the like for reducing the pressure of the high-pressure refrigerant. In the heat absorber 221, the refrigerant that has been decompressed to a low pressure removes heat from the surroundings.

The heat absorber 221 and the radiator 222 are constituted by fin tube heat exchangers. The end portions of the heat absorber 221 and the radiator 222 are connected by end plates, and a space is provided between the heat absorber 221 and the radiator 222.

The conduit 223 through which the coolant flows is formed of, for example, a copper tube. In order to form a flow path for dry air, a pipe line 223 passes through a plurality of fins arranged in parallel at predetermined intervals. The fin is formed of, for example, a flat plate made of aluminum having a thickness of 0.08 to 0.2 mm that has been punched. The fin pitch is formed to be about 1.2 mm, for example.

The compressor 224 includes a compression mechanism (not shown) that compresses the refrigerant and a compressor motor (not shown) that drives the compression mechanism in a vertical cylindrical casing. The compressor motor is constituted by a direct current motor so that the rotational speed can be freely changed.

The compressor 224 is driven by a compressor motor. The refrigerant is pressurized by the compression mechanism, becomes a high-temperature and high-pressure gas refrigerant, is discharged from the discharge port 223 a of the pipe 223, and is sent to the radiator 222.

In the radiator 222, the refrigerant is cooled and condensed by the drying air blown to the first air passage 219a by the blower 225, and becomes a low-temperature and high-pressure liquid refrigerant. The liquid refrigerant is depressurized by the throttle unit 228 and sent to the heat absorber 221. In the heat absorber 221, the refrigerant comes into contact with the laundry such as the clothes Z in the drum 204, is heated and evaporated by moist and hot air, becomes a low-temperature and low-pressure gas refrigerant, and is sucked into the compressor 224 again. Pressure.

10 and 11, an arrow A indicates the flow direction of the drying air flowing through the air path 219. An arrow B indicates the flow direction of the refrigerant flowing through the conduit 223.

A refrigerant temperature detector 229 is provided in a pipe line 223 between the compressor 224 and the radiator 222. The refrigerant temperature detection unit 229 is composed of a thermistor or the like, and detects the temperature of the refrigerant discharged from the compressor 224.

The air path 219 includes a first temperature detector 230 that detects the temperature of the drying air that flows through the first air path 219a, and a second temperature detection that detects the temperature of the drying air that flows through the second air path 219b. A portion 231 is provided. The first temperature detection unit 230 is configured with a thermistor or the like, and detects the temperature of the drying air flowing into the drum 204 from the air blowing port 218. The second temperature detection unit 231 is composed of a thermistor or the like, and detects the temperature of the drying air that flows out of the drum 204 from the exhaust port 217. From the outputs of the first temperature detection unit 230 and the second temperature detection unit 231, the dry state of the laundry such as the clothes Z in the drum 204 is detected.

The control unit 232 that controls the washing operation and the drying operation is provided in the upper front portion of the housing 202. An operation display unit 233 is attached to the upper front portion of the housing 202. The operation display unit 233 is provided with an operation unit 233a that performs a manual operation of driving and a display unit 233b that displays setting contents, driving conditions, and the like.

In addition to the power switch 234, the operation unit 233a is provided with a hot water washing button (hot water washing setting unit) 235 for washing with heated washing water, other various setting buttons (not shown), and the like. The user can arbitrarily select a driving course such as washing and drying by the operation unit 233a and set the driving content.

When performing the washing operation, first, the door 208 is opened, and the laundry such as the clothes Z is put into the drum 204. The power switch 234 of the operation unit 233a provided in the upper front portion of the housing 202 is turned on, and the operation course is selected by using various setting buttons, and the time of each process is input as necessary. Based on the set content, the operation can be started, and the controller 232 can execute a series of operations from washing to drying.

First, in the washing process, the cloth amount detection unit 236 detects the amount of laundry such as clothes Z put in the drum 204. The cloth amount detection unit 236 can detect the amount of laundry from the current value of the motor 207 when the drum 204 is rotated. A predetermined amount of water is supplied according to the amount of laundry detected by the cloth amount detection unit 236. When the water level detection unit 216 detects the amount of water in the water tank 201 and a set amount of water is supplied, the water supply valve 210 is closed.

When water and detergent are supplied into the water tank 201 through the water supply path 211, the drum 204 is driven to rotate by the motor 207, and washing by a stirring operation is started. When the drum 204 is rotated at a predetermined speed (for example, 50 rpm), the laundry such as clothes Z is lifted in the rotation direction of the drum 204 by the baffle 206 provided on the inner peripheral surface of the drum 204. Falls from above. Thus, washing by tapping is performed for a predetermined time.

After the stirring process, the drain valve 212 is opened and the washing water in the water tank 201 is drained. An intermediate dehydration step is performed in which the drum 204 is rotated at a high speed (for example, 900 rpm), and dirt, detergent, and the like contained in the laundry such as clothing Z are dehydrated together with water. Next, the water supply valve 210 is opened, a new amount of water is supplied into the water tank 201, the drum 204 is rotated at a predetermined speed (for example, 50 rpm), and the rinsing process is performed for a predetermined time.

After the rinsing process is performed a predetermined number of times, the washing water in the water tank 201 is drained. The drum 204 is rotated at a high speed (for example, 1500 rpm), a dehydration process for dehydrating moisture contained in the laundry, remaining detergent, and the like is finally performed, and washing is completed.

When the drying operation is performed after the washing operation, the process proceeds to the drying process after the dehydration process is completed. In the drying process, the drum 204 is rotated at a predetermined speed (for example, 50 rpm), and the laundry is stirred in the drum 204. At the same time, the air blower 225 and the heat pump device 220 are activated, and the air circulation of the drying air into the drum 204 and the refrigerant compression by the compressor 224 are started.

In the heat pump device 220, the compressor motor of the compressor 224 is driven, the refrigerant is compressed by the compression mechanism, and the refrigerant is discharged from the compressor 224 by this pressure. The refrigerant discharged from the compressor 224 flows through the pipe 223 and circulates through the radiator 222, the throttle unit 228, the heat absorber 221, and the compressor 224. The heat of the compressed refrigerant flows into the radiator 222 and is radiated to the air in contact with the fins provided in the pipe line 223 provided in the radiator 222. Thus, the drying air flowing through the air path 219 is heated.

The heated drying air is supplied into the drum 204 from the air blowing port 218, takes moisture from the laundry, becomes moist air, and is discharged from the exhaust port 217 to the air path 219. As the laundry is dried, lint such as lint is generated from the laundry. The drying air discharged from the exhaust port 217 passes through the filter 227, and lint contained in the air is captured by the filter 227.

The drying air from which the lint has been removed by the filter 227 is dehumidified as it passes through the heat absorber 221 and is deprived of sensible heat and latent heat. Condensed water generated by dehumidification drops to a water storage unit (not shown) and is drained out of the washing dryer through a drain valve 212. The drying air that has been dehumidified and dried passes through the radiator 222 and is heated.

In the drying process, the first temperature detection unit 230 and the second temperature detection unit 231 detect the temperature of the drying air flowing through the air path 219. The first temperature detection unit 230 detects the temperature of the drying air flowing into the drum 204, and the second temperature detection unit 231 detects the temperature of the drying air that flows out of the drum 204. From these outputs, the dryness of the laundry in the drum 204 is detected, and when the predetermined dryness is detected, the drying process ends.

On the other hand, in the heat pump device 220, the heat of the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 224 is deprived by the drying air passing through the radiator 222 and condensed, and the pressure is reduced by the throttle unit 228. It becomes a low-pressure liquid refrigerant. The liquid refrigerant is deprived of heat from the drying air by the heat absorber 221 and vaporized to return to the compressor 224 again as a low-temperature and low-pressure gas refrigerant.

The temperature of the refrigerant discharged from the compressor 224 is detected by the refrigerant temperature detection unit 229. The drive of the compressor motor is controlled so that the temperature of the refrigerant is maintained within a predetermined temperature range (for example, 85 to 90 ° C.). Thereby, the operation of the compressor 224 is stabilized. Therefore, a safe and stable heat pump cycle is realized.

Next, a case where washing is performed with warm water and then drying is described. At the start of washing, the user selects “washing drying course” with the operation unit 233a of the operation display unit 233, selects “warm water washing” with the hot water washing button 235 of the operation unit 233a, and the temperature of the washing water (for example, , 40 ° C.). Washing with warm water is easy to remove stains, can increase the cleaning power, and is advantageous for washing when the water temperature is low.

The cloth amount detection unit 236 detects the amount of laundry put into the drum 204. An amount of washing water set according to the amount of laundry is supplied into the water tank 201. The controller 232 detects the temperature of the washing water stored in the water tank 201 by the water temperature detector 215 before starting the washing operation. The control unit 232 compares the set temperature of the washing water with the temperature detected by the water temperature detection unit 215, controls the energization of the washing water heater 214, and heats the washing water to the set temperature.

The control unit 232 drives the air path switching device 226 when the washing process is completed. As illustrated in FIG. 10, the control unit 232 switches the air path 219 so as to close the second air path 219 b and communicate with the third air path 219 c. When the intermediate dehydration process is executed while the temperature in the water tank 201 is raised in the washing process with heated washing water, the heated air in the water tank 201 is exhausted by the high-speed rotation of the drum 204. It flows into the second air passage 219b from the mouth 217.

At this time, since the second air passage 219b is switched to the third air passage 219c, the heated air flows through the third air passage 219c without flowing into the heat pump device 220. It is discharged out of the housing 202. Therefore, the heat absorber 221 and the radiator 222 are not heated, and the refrigerant in the heat pump cycle does not flow into the compressor 224. Therefore, the refrigerant can be held in the heat pump cycle.

Note that the same amount of air as the air discharged from the third air passage 219 c flows into the air passage 219 from the downstream side of the air passage switching device 226 and from the upstream side of the drum 204.

Next, after performing the rinsing process a predetermined number of times, the washing water in the water tank 201 is drained, and the drum 204 is rotated at a high speed (for example, 1500 rpm) to perform the dehydration process. When the dehydration process is completed, the control unit 232 drives the air path switching device 226, closes the third air path 219c, and communicates with the second air path 219b as shown in FIG. Switch the path 219.

In the drying step, the drying air passes through the second air passage 219b and blows and circulates through the drum 204 and the heat pump device 220 to dry the laundry in the drum 204. At the same time, the refrigerant can be retained in the heat pump cycle at the start of the drying process. Therefore, the drying performance at the start of the drying operation can be improved.

As described above, the washer / dryer of the present embodiment includes the water tank 201 elastically supported in the housing 202 and the drum 204 rotatably provided in the water tank 201. In addition, a heat pump device 220 in which a refrigerant is circulated through the compressor 224, the radiator 222, the throttle unit 228, and the heat absorber 221 through a pipe 223, a radiator 222, and a heat absorber 221 are disposed, and the drum 204 And a first air passage 219a for introducing drying air. Moreover, the ventilation part 225 which ventilates to the 1st air path 219a, the water temperature detection part 215 which detects the temperature of the washing water in the water tank 201, the warm water washing | cleaning setting part 235 which sets the washing by warm water, washing operation and drying And a control unit 232 for controlling the operation. When the hot water cleaning is set by the hot water cleaning setting unit 235 and the hot water cleaning is performed, the refrigerant is prevented from flowing into the compressor 224 before the drying operation. In addition, the washing and drying machine of the present embodiment includes a second air passage 219b that introduces drying air from the drum 204 through the water tank 201 to the heat pump device 220. Further, a third air passage 219c that communicates from the drum 204 to the outside of the housing 202 via the water tank 201, and an air passage switching device 226 that switches between the second air passage 219b and the third air passage 219c are further provided. The control unit 232 sequentially controls the washing process, the rinsing process, and the dewatering process in the washing operation, and the air path switching device 226 performs the operation from the second air path 219b to the third air path before the intermediate dewatering process of the washing process. It switches so that it may lead to 219c, and it switches from the 3rd air path 219c to the 2nd air path 219b after completion | finish of a spin-drying | dehydration process. As a result, even when washing is performed with warm water, the refrigerant in the heat pump cycle can be retained at the start of the drying operation, and the heat pump cycle can be quickly brought up to an optimal state to improve the drying performance at the start of the drying operation. Can be improved.

In addition, the third air passage 219c is branched from the second air passage 219b, and the air passage switching device 226 is provided at a branch portion between the second air passage 219b and the third air passage 219c. Thereby, the structure of the air path switching device 226 can be simplified, and the opening of one air path and the closing of the other air path can be performed simultaneously.

In addition, the temperature of the washing water at the time of hot water washing can be set to an optimum temperature according to the type and nature of the laundry and the purpose.

In addition, the control unit 232 switches the second air path 219b and the third air path 219c after the washing process is completed, but it is switched before the intermediate dehydration process, that is, until the intermediate dehydration process is started. It may be switched when “warm water cleaning” is selected. In short, it is only necessary to prevent the heated air in the water tank 201 from flowing into the heat pump device 220 by the high-speed rotation of the drum 204 during the dehydration process.

Further, the control unit 232 switches from the third air path 219c to the second air path 219b after the dehydration process is completed, that is, until the drying process is started.

In this embodiment, the third air passage 219c is branched from the second air passage 219b. However, the third air passage 219c is provided so as to communicate directly from the water tank 201 to the outside of the housing 202. Also good. In this case, the air path switching device 226 is provided in both the second air path 219b and the third air path 219c, and switches so as to open one air path and close the other air path. In short, it is only necessary that the heated air can flow out of the apparatus without flowing into the heat pump apparatus 220 during the dehydration process including intermediate dehydration.

(Embodiment 3)
FIG. 13 is a system diagram at the time of the dehydrating operation of the washing / drying machine in Embodiment 3 of the present invention. FIG. 14 is a system diagram of the drying operation. A feature of the present embodiment is that a fourth air passage that introduces outside air into the air passage 219 from the outside of the housing 202 into the air passage 219 until the air that has passed through the air passage switching device 226 flows into the drum 204. 219d is provided. Other configurations are the same as those of the second embodiment, the same reference numerals are given to the same configurations, and the detailed description of the second embodiment is used.

When the washing process is completed, the control unit 232 drives the air path switching device 226, closes the second air path 219b and opens the air path 219 so as to communicate with the third air path 219c, as shown in FIG. Switch. When the intermediate dehydration process is executed in a state where the temperature in the water tank 201 is raised in the washing process with the heated washing water, the heated air in the water tank 201 is discharged from the exhaust port 217 to the second through the high speed rotation of the drum 204. Into the air path 219b.

At this time, since the second air passage 219b is switched to the third air passage 219c, the heated air does not flow into the heat pump device 220 but flows through the third air passage 219c and the casing 202. It is discharged outside. Therefore, the heat absorber 221 and the radiator 222 are not heated, and the refrigerant in the heat pump cycle does not flow into the compressor 224. Therefore, the refrigerant can be held in the heat pump cycle.

A fourth air passage 219d that introduces outside air from outside the housing 202 to the air passage 219 is provided in the air passage 219 until the air that has passed through the air passage switching device 226 flows into the drum 204 from the air blowing port 218. ing. More specifically, the fourth air passage 219d is connected to the air passage 219 on the upstream side of the heat absorber 221 of the heat pump device 220 so that the outside air introduced from the fourth air passage 219d passes through the heat absorber 221. It is configured. When the drum 204 rotates at a high speed in the intermediate dehydration process or the like, outside air is introduced from the fourth air passage 219d, and moist air in the drum 204 is discharged out of the housing 2 from the third air passage 219c.

Therefore, since the air outside the casing 202 flows into the air passage 219 from the fourth air passage 219d and passes through the heat absorber 221, the outside air can be dehumidified. Further, the humid air in the drum 204 can be discharged from the third air passage 219c to the outside of the housing 202, and the amount of water to be dehumidified in the drying process is reduced, thereby reducing the power consumption during the drying operation. be able to.

As described above, the washer / dryer of the present embodiment introduces the outside air from the outside of the housing 202 into the second air passage 219b between the air passage switching device 226 and the air outlet 218. An air passage 219d is provided. The fourth air passage 219d communicates with the second air passage 219b on the upstream side of the heat absorber 221 so that outside air introduced from the fourth air passage 219d passes through the heat absorber 221. Thereby, the air heated at the time of dehydration does not flow into the heat pump device 220, and further, the air outside the housing 202 flows from the fourth air passage 219d and the air inside the drum 204 from the third air passage 219c. Moist air can be discharged out of the housing 202. In addition, the amount of water dehumidified in the drying process can be reduced, and the amount of power consumed during the drying operation can be reduced.

(Embodiment 4)
FIG. 15 is a configuration diagram in which a part of the washing / drying machine according to Embodiment 4 of the present invention is cut away. FIG. 16 is a system diagram of the dehydration operation. FIG. 17 is a system diagram of the drying operation. FIG. 18 is a block diagram of the same.

15 to 18, the water tank 301 is elastically supported by a plurality of suspension mechanisms 303 in a housing 302. The drum 304 has an input port (not shown) for putting in and out the laundry such as clothes Z on the front side, is configured in a bottomed cylindrical shape, and is disposed in the water tank 301. The drum 304 is provided so as to be rotatable about a rotation shaft 304a and accommodates laundry such as clothes Z.

A large number of holes 305 are provided on the peripheral side wall of the drum 304 over the entire periphery. Baffles 306 for lifting the laundry in the direction of rotation of the drum 304 are provided at a plurality of locations on the inner side wall of the drum 304. The drum 304 is provided with a rotating shaft 304 a for rotating the drum 304 on the rear surface side of the drum 304. The water tank 301, the drum 304, and the rotating shaft 304a are provided to be inclined forward and at an angle θ (eg, 10 to 20 °) with respect to the horizontal.

A motor 307 connected to the rotating shaft 304a and rotating the drum 304 is provided outside the rear side of the water tank 301 so as to rotate the drum 304 forward and backward. The motor 307 is configured by a brushless DC motor or the like, and is configured such that the rotation speed can be freely changed by inverter control.

A door 308 that opens and closes the inlet of the drum 304 is provided on the front surface of the housing 302. A front opening (not shown) of the water tank 301 facing the charging port of the drum 304 is sealed and connected to the housing 302 by a flexible packing 309 that can be expanded and contracted. The door 308 is provided with a transparent window so that the inside of the drum 304 can be seen from the outside.

When the door 308 is closed, the packing 309 provided at the front opening of the water tank 301 comes into contact with the inner surface of the door 308. Thereby, the inside of the water tank 301 becomes a watertight and airtight space, and water and air are prevented from leaking to the outside when the washing, rinsing, dehydrating and drying processes are executed.

In the housing 302, a water supply valve 310 for controlling the supply of tap water into the water tank 301 is provided. A water supply path 311 communicating with the water tank 301 is connected to the water supply valve 310 through a detergent case (not shown). The water supply path 311 is connected to the water pipe, and the water supply valve 310 is opened and closed to supply and stop the tap water into the water tank 1.

Further, a drain valve 312 for draining the washing water in the water tank 301 is provided below the rear part of the water tank 301. By opening and closing the drain valve 312, the washing water in the water tank 301 is drained and stopped through the drain path 313. Downstream of the drain valve 312, a sealing water (not shown) such as a U trap is provided in order to prevent odors from sewage from entering the water tank.

A washing water heater (heating unit) 314 for heating the washing water is provided behind the bottom in the water tank 301. The washing water heater 314 is formed by bending a sheathed heater into a substantially U shape, and is attached along the bottom surface of the water tank 301 in the direction in which the rotating shaft 304a extends.

A space is provided between the washing water heater 314 and the bottom surface of the water tank 301. When the washing water is accumulated in the water tank 301, the washing water heater 314 is located below the surface of the washing water and is immersed in the washing water to heat the washing water. The temperature of the washing water heated by the washing water heater 314 is detected by a water temperature detection unit 315 configured with a thermistor or the like attached to the bottom of the water tank 301.

The amount of washing water stored in the water tank 301 is detected by a water level detection unit 316. The water level detection unit 316 has a diaphragm inside. The water level detection unit 316 includes a pressure sensor that detects pressure from the deformation amount of the diaphragm that deforms when pressure is applied, and detects the water level of the washing water supplied to the water tank 301.

An exhaust port 317 is provided on the peripheral side wall at the upper front of the water tank 301. An air outlet 318 is provided on the back surface of the water tank 301. The exhaust port 317 and the blower port 318 are connected by an air passage 319. The air passage 319 includes a first air passage 319a, a second air passage 319b, a third air passage 319c, and a heat pump device 350. The first air passage 319a connects the air outlet 318 and the heat pump device 350 in communication. The first air passage 319 a is provided with a blower 322 that blows drying air into the drum 304 via the water tank 301. The second air passage 319b connects the exhaust port 317 and the heat pump device 350 in communication with each other, and extends from the front upper side of the water tank 301 toward the rear side. The third air passage 319c is branched from the second air passage 319b and is provided so as to communicate with the outside of the housing 302 from above the housing 302.

An air path switching device 320 is provided at a branch portion between the second air path 319b and the third air path 319c. The air path switching device 320 can be driven to switch the air path 319 to the second air path 319b or the third air path 319c.

In the second air passage 319b, a filter 321 that captures lint that passes through the second air passage 319b together with the drying air is provided between the exhaust port 317 and the air passage switching device 320.

A blower 322 that blows drying air into the drum 304 via the water tank 301 is provided between the heat pump device 350 and the air outlet 318.

In the heat pump device 350, a heat absorber 323 from which drying air is cooled and dehumidified, and a radiator 324 that heats the drying air dehumidified by the heat absorber 323 are sequentially installed. The heat absorber 323 and the heat radiator 324 are connected to the compressor 326 by a pipe line 325 through which the refrigerant flows.

In the heat pump device 350, the compressor 326, the radiator 324, the throttle unit 349, and the heat absorber 323 are connected by a pipe line 325 so that the refrigerant circulates. The compressor 326 compresses a refrigerant (for example, R134a). The radiator 324 radiates the heat of the compressed high-temperature and high-pressure refrigerant. The throttle unit 349 includes a capillary tube for reducing the pressure of the high-pressure refrigerant, an expansion valve, or the like. In the heat absorber 323, the refrigerant whose pressure has been reduced to a low pressure takes heat from the surroundings.

The heat absorber 323 and the radiator 324 are constituted by fin tube heat exchangers. The end portions of the heat absorber 323 and the heat radiator 324 are connected by an end plate, and a space is provided between the heat absorber 323 and the heat radiator 324.

The conduit 325 through which the refrigerant flows is formed of, for example, a copper tube. In order to form a flow path for dry air, a pipe tube 325 passes through a plurality of fins arranged in parallel at a predetermined interval, thereby forming a fin tube heat exchanger. The fin is formed of, for example, a flat plate made of aluminum having a thickness of 0.08 to 0.2 mm that has been punched. The fin pitch is formed to be about 1.2 mm, for example.

The compressor 326 includes a compression mechanism that compresses the refrigerant and a compressor motor that drives the compression mechanism in a vertical cylindrical casing 327. The compressor motor is constituted by a direct current motor so that the rotational speed can be freely changed. The compressor motor has a stator fixed to the inner surface of the casing 327 and a rotor provided rotatably inside the stator. A crankshaft extending in the vertical direction is attached to the rotation center of the rotor.

The compression mechanism of the compressor 326 is a rotary type. The compression mechanism is provided below the compressor motor, and is connected to the compressor motor via a crankshaft. A piston that is eccentrically fixed to the crankshaft rotates eccentrically in the cylinder, and compresses the refrigerant sucked from the suction port of the pipe line 325.

The compressor 326 is driven by a compressor motor. The refrigerant is pressurized by the compression mechanism, becomes a high-temperature and high-pressure gas refrigerant, is discharged from the discharge port 325 b of the pipe 325, and is sent to the radiator 324.

In the radiator 324, the refrigerant is cooled and condensed by the drying air blown to the first air passage 319a by the blower 322, and becomes a low-temperature and high-pressure liquid refrigerant. This liquid refrigerant is decompressed by the throttle 349 and sent to the heat absorber 23. In the heat absorber 323, the refrigerant comes into contact with the laundry such as the clothes Z in the drum 304, and is heated and evaporated by moist and hot air to become a low-temperature and low-pressure gas refrigerant, which is sucked into the compressor 326 again. Pressure.

16 and 17, arrow A indicates the flow direction of the drying air flowing through the air passage 319. An arrow B indicates the flow direction of the refrigerant flowing through the pipe line 325.

A compressor temperature detector 328 is attached to the side surface of the casing 327 of the compressor 326. The compressor temperature detection unit 328 is configured with a thermistor or the like, and detects the temperature of the compressor 326.

A refrigerant temperature detector 332 is provided in a pipe line 325 between the compressor 326 and the radiator 324. The refrigerant temperature detection unit 332 includes a thermistor and the like, and detects the temperature of the refrigerant discharged from the compressor 326.

The air path 319 includes a first temperature detection unit 333 that detects the temperature of the drying air that flows through the first air path 319a, and a second temperature that detects the temperature of the drying air that flows through the second air path 319b. A detection unit 334 is provided. The first temperature detection unit 333 is configured with a thermistor or the like, and detects the temperature of the drying air flowing into the drum 304 from the air blowing port 318. The second temperature detection unit 334 is composed of a thermistor or the like, and detects the temperature of the drying air that flows out of the drum 304 from the exhaust port 317. From the outputs of the first temperature detection unit 333 and the second temperature detection unit 334, the dry state of the laundry such as the clothes Z in the drum 304 is detected.

The control unit 335 that controls the washing operation and the drying operation is provided in the upper front portion of the housing 302. An operation display unit 336 is attached to the upper front portion of the housing 302. The operation display unit 336 is provided with an operation unit 336a that performs a manual operation of driving and a display unit 336b that displays setting contents, driving conditions, and the like.

In addition to the power switch 336c, the operation unit 336a is provided with a hot water washing button (hot water washing setting unit) 336d for washing with heated washing water, other various setting buttons (not shown), and the like. The user can arbitrarily select a driving course such as washing and drying by the operation unit 336a and set the driving content.

When performing the washing operation, first, the door 308 is opened, and the laundry such as clothes Z is put into the drum 304. The power switch 336c of the operation unit 336a provided at the upper front of the housing 302 is turned on, and an operation course is selected by using various setting buttons, and the time of each process is input as necessary. Based on the set content, the operation can be started, and the controller 335 can execute a series of operations from washing to drying.

First, in the washing process, the cloth amount detection unit 337 detects the amount of laundry such as clothes Z put in the drum 304. The cloth amount detection unit 337 can detect the amount of laundry from the current value of the motor 307 when the drum 304 is rotated. A preset amount of water is supplied according to the amount of laundry detected by the cloth amount detection unit 337. When the water level detection unit 316 detects the amount of water in the water tank 301 and a predetermined amount of water is supplied, the water supply valve 310 is closed.

When a predetermined amount of water and detergent is supplied into the water tank 301 through the water supply path 311, the drum 304 is driven to rotate by the motor 307, and washing by a stirring operation is started. When the drum 304 is rotated at a predetermined speed (for example, 50 rpm), the laundry such as clothes Z is lifted in the rotation direction of the drum 304 by the baffle 306 provided on the inner peripheral surface of the drum 304, Falls from above. Thus, washing by tapping is performed for a predetermined time.

After the stirring process, the drain valve 312 is opened and the washing water in the water tank 301 is drained. An intermediate dehydration process is performed in which the drum 304 is rotated at a high speed (for example, 900 rpm) to dewater dirt and detergent contained in the laundry such as the clothes Z together with water. Next, the water supply valve 310 is opened, a new amount of water is supplied into the water tank 301, the drum 304 is rotated at a predetermined speed (for example, 50 rpm), and the rinsing process is performed for a predetermined time.

After the rinsing process is performed a predetermined number of times, the washing water in the water tank 301 is drained. The drum 304 is rotated at a high speed (for example, 1500 rpm), a dehydration process for dehydrating moisture contained in the laundry, remaining detergent, and the like is finally performed, and the washing operation is completed.

When the drying operation is performed after the washing operation, the process proceeds to the drying process after the dehydration process is completed.

In the drying process, the drum 304 is rotated at a predetermined speed (for example, 50 rpm), and the laundry is stirred in the drum 304. At the same time, the air blower 322 and the heat pump device 350 are activated, and the air circulation of the drying air into the drum 304 and the refrigerant compression by the compressor 326 are started.

In the heat pump device 350, the compressor motor of the compressor 326 is driven, the refrigerant is compressed by the compression mechanism, and the refrigerant is discharged from the compressor 326 by this pressure. The refrigerant discharged from the compressor 326 flows through the pipe 325 and circulates through the radiator 324, the throttle unit 349, the heat absorber 323, and the compressor 326. The heat of the compressed refrigerant flows into the radiator 324 and is radiated to the air in contact with the fins provided in the pipe 325 provided in the radiator 324. Thus, the drying air flowing through the air path 319 is heated.

The heated drying air is supplied into the drum 304 from the air blowing port 318, takes moisture from the laundry, becomes moist air, and is discharged from the exhaust port 317 to the air passage 319. As the laundry is dried, lint such as lint is generated from the laundry. The drying air discharged from the exhaust port 317 passes through the filter 321, and lint contained in the air is captured by the filter 321.

The drying air from which the lint has been removed by the filter 321 is dehumidified as it passes through the heat absorber 323 and is deprived of sensible heat and latent heat. Condensed water generated by dehumidification drops to a water storage unit (not shown) and is drained out of the washing dryer through a drain valve 312. The drying air that has been dehumidified and dried passes through the radiator 324 and is heated.

In the drying process, the first temperature detection unit 333 and the second temperature detection unit 334 detect the temperature of the drying air flowing through the air passage 319. The first temperature detection unit 333 detects the temperature of the drying air that flows into the drum 304, and the second temperature detection unit 334 detects the temperature of the drying air that flows out of the drum 304. From these outputs, the dryness of the laundry in the drum 304 is detected, and when the predetermined dryness is detected, the drying process ends.

On the other hand, in the heat pump device 350, the heat of the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 326 is deprived by the drying air passing through the radiator 324 and condensed, and is reduced in pressure by the throttle unit 349. It becomes a low-pressure liquid refrigerant. The liquid refrigerant takes heat from the drying air by the heat absorber 323 and vaporizes to return to the compressor 326 again as a low-temperature and low-pressure gas refrigerant.

The temperature of the refrigerant discharged from the compressor 326 is detected by the refrigerant temperature detection unit 332. The drive of the compressor motor is controlled so that the temperature of the refrigerant is maintained within a predetermined temperature range (for example, 85 to 90 ° C.). Thereby, the operation of the compressor 326 is stabilized. Therefore, a safe and stable heat pump cycle is realized.

Next, a case where washing is performed with warm water and then drying is described.

Washing with hot water is easy to remove dirt, can improve the cleaning power, and is advantageous for washing when the water temperature is low. The hot water may be supplied directly with hot water such as bath water or hot water, or heated with a washing water heater after water supply.

In the present embodiment, a case where heating is performed after water supply by the latter washing water heater 314 will be described as an example.

The cloth amount detector 337 detects the amount of laundry put into the drum 304. An amount of washing water set according to the amount of laundry is supplied into the water tank 301. The controller 335 detects the temperature of the washing water stored in the water tank 301 by the water temperature detector 315 before starting the washing operation. The control unit 335 compares the set temperature of the washing water with the temperature detected by the water temperature detection unit 315, controls energization of the washing water heater 314, and heats the washing water to the set temperature.

As shown in FIG. 16, when the water temperature detected by the water temperature detector 315 becomes higher than the compressor temperature detected by the compressor temperature detector 328 during the washing process, the following operation is performed. When the washing process ends, the air path switching device 320 is driven by the control unit 335. The second air passage 319b is closed and the air passage 319 is switched so as to communicate with the third air passage 319c. When the intermediate dehydration process is executed while the temperature in the water tank 301 is raised in the washing process with the heated washing water, the heated air in the water tank 301 is exhausted by the high speed rotation of the drum 304. 317 flows into the second air passage 319b. At this time, since the second air passage 319b is switched to the third air passage 319c, the heated air does not flow into the heat pump device 350. The heat absorber 323 and the radiator 324 are not heated by the heated air, and the refrigerant in the heat pump cycle does not flow into the compressor 326. Therefore, the refrigerant can be held in the heat pump cycle.

When the compressor temperature is higher than the washing water temperature, for example, when the drying operation is continuously performed from washing to drying, the air passage switching device 320 is not driven and the third air passage 319c leading to the outside of the housing is not performed. The air is not communicated with the air and unnecessary high-humidity air is not taken out of the housing 2.

Next, after the rinsing process is performed a predetermined number of times, the washing water in the water tank 301 is drained, and the drum 304 is rotated at a high speed (for example, 1500 rpm) to perform the dehydration process.

When the dehydration process is completed, as shown in FIG. 17, the air path switching device 320 is driven by the control unit 335 to switch the air path 319 from the third air path 319c to the second air path 319b. Then, although a drying process is started, since a refrigerant | coolant can be hold | maintained in a heat pump cycle as mentioned above, the drying performance at the time of a drying operation start can be improved.

As described above, the washing and drying machine of the present embodiment includes the water tank 301 elastically supported in the housing 302 and the drum 304 that is rotatably provided in the water tank 301. In addition, a heat pump device 350 in which a refrigerant is circulated through the compressor 326, the radiator 324, the throttle unit 349, and the heat absorber 323 so that the refrigerant circulates, a radiator 324, and the heat absorber 323 are disposed, and the drum 304 And a first air passage 319a for introducing drying air. Also, a blower 322 that blows air to the first air passage 319, a water temperature detection unit 315 that detects the temperature of the washing water in the water tank 301, a hot water washing setting unit 336d that sets washing with hot water, and a washing operation and a drying operation And a control unit 335 for controlling. When the hot water cleaning is set by the hot water cleaning setting unit 336d and the hot water cleaning is performed, the refrigerant is prevented from flowing into the compressor 326 before the drying operation. In addition, the washing and drying machine of the present embodiment branches from the drum 304 from the second air passage 319b for introducing the drying air to the heat pump device 350 via the water tank 301 and the second air passage 319b. And a third air passage 319c communicating with the outside of the housing 302. In addition, the air path switching device 320 that switches between the second air path 319b and the third air path 319c, the compressor temperature detecting unit 328 that detects the temperature of the compressor 326, and the temperature of the washing water in the water tank 301 are detected. And a water temperature detection unit 315 that performs the operation. The control unit 335 sequentially controls the washing process, the rinsing process, and the dehydrating process in the washing operation, and detects the temperature of the washing water and the compressor 326 before starting the compressor 326. When the temperature of the washing water is higher than the temperature of the compressor 326, the air path switching device 320 switches from the second air path 319b to the third air path 319c before the intermediate dehydration process of the washing process, and dewaters. After the process is completed, the third air passage 319c is switched to the second air passage 319b. As a result, even when washing is performed with warm water, the refrigerant in the heat pump cycle can be retained at the start of the drying operation, and the heat pump cycle can be quickly brought up to an optimal state to improve the drying performance at the start of the drying operation. Can be improved.

In addition, the third air passage 319c is branched from the second air passage 319b, and the air passage switching device 320 is provided at a branch portion between the second air passage 319b and the third air passage 319c. Thereby, the structure of the air path switching device 320 can be simplified, and the opening of one air path and the closing of the other air path can be performed simultaneously.

(Embodiment 5)
FIG. 19 is a system diagram of the washing / drying machine in the dehydrating operation according to the fifth embodiment of the present invention. FIG. 20 is a system diagram of the drying operation.

The feature of the fifth embodiment is that a fourth air passage 319d for introducing outside air from the outside of the housing 302 is provided while flowing into the drum 304 from the air passage switching device 320. Other configurations are the same as those of the fourth embodiment, the same configurations are denoted by the same reference numerals, and the detailed description uses the fourth embodiment.

The cloth amount detector 337 detects the amount of laundry put into the drum 304. An amount of washing water set according to the amount of laundry is supplied into the water tank 301. A water temperature detector 315 detects the temperature of the washing water stored in the water tank 301. The control unit 335 compares the set temperature of the washing water with the temperature detected by the water temperature detection unit 315, controls the energization of the washing water heater 314, and heats the washing water to the set temperature.

As shown in FIG. 19, when the water temperature detected by the water temperature detection unit 315 becomes higher than the compressor temperature detected by the compressor temperature detection unit 328 during the washing process, the following operation is performed. When the washing process ends, the control unit 335 drives the air path switching device 320, closes the second air path 319b, and switches the air path 319 so as to communicate with the third air path 319c. When the intermediate dehydration process is executed in the washing process using heated washing water in a state where the temperature in the water tank 301 is increased, the heated air in the water tank 301 is discharged from the exhaust port 317 by the high-speed rotation of the drum 304. It flows into the second air passage 319b. At this time, since the second air passage 319b is switched to the third air passage 319c, the heated air is not flowed into the heat pump device 350. The heat absorber 323 and the radiator 324 are not heated by the heated air, and the refrigerant in the heat pump cycle does not flow into the compressor 326. Therefore, the refrigerant can be held in the heat pump cycle.

Further, by providing the fourth air passage 319d, when the drum 304 is rotated at a high speed, outside air is introduced from the fourth air passage 319d, and a decrease in pressure in the water tank 301 is suppressed. Therefore, the sealed water can be retained.

When the dehydration process is completed, as shown in FIG. 20, the air path switching device 320 is driven by the control unit 335 to switch the air path 319 from the third air path 319c to the second air path 319b. Then, although a drying process is started, since a refrigerant | coolant can be hold | maintained in a heat pump cycle as mentioned above, the drying performance at the time of a drying operation start can be improved.

As described above, the washer / dryer according to the present embodiment has the fourth air passage that introduces outside air from the outside of the housing 302 to the second air passage 319b while flowing into the drum 304 from the air passage switching device 320. 319d is provided. Thereby, even when washing is performed with warm water, the refrigerant in the heat pump cycle can be held at the start of the drying operation. In addition, the heat pump cycle can be quickly brought up to an optimum state, and the drying performance at the start of the drying operation can be improved. Also, the sealed water can be retained during the intermediate dehydration and dehydration steps.

As described above, the washing / drying machine according to the present invention is useful as a washing / drying machine because it can improve the drying performance at the start of the drying operation when washing with warm water during washing.

DESCRIPTION OF SYMBOLS 101 Water tank 102 Case 103 Suspension mechanism 104 Drum 104a Rotating shaft 105 Hole 106 Baffle 107 Motor 108 Door 109 Packing 110 Water supply valve 111 Water supply path 112 Drain valve 113 Drain path 114 Washing water heater 115 Water temperature detection part 116 Water level detection part 117 Exhaust Port 118 Air outlet 119 Air passage 120 Filter 121 Blower (Blower part)
122 heat absorber 123 heat radiator 124 pipe 125 compressor 126 casing 127 compression mechanism 128 compressor motor 128a stator 128b rotor 128c crankshaft 129 lubricating oil 130 crankcase heater (heating unit)
131 Compressor temperature detector 132a First refrigerant temperature detector (refrigerant temperature detector)
132b Second refrigerant temperature detection unit 133a First temperature detection unit 133b Second temperature detection unit 135 Control unit 136 Operation display unit 136a Operation unit

136b Display unit

136c Power switch 136d Hot water cleaning button (hot water cleaning setting unit)
137 Cloth amount detection unit 141 Heat pump device 142 Restriction unit 143 Hot water supply device 144 Hot water supply device connection unit 145 Hot water supply valve 146 Water supply temperature detection unit 201 Water tank 202 Case 203 Suspension mechanism 204 Drum 204a Rotating shaft 205 Hole 206 Baffle 207 Motor 208 Door 209 Packing 210 Water supply valve 211 Water supply path 212 Drain valve 213 Drainage path 214 Washing water heater 215 Water temperature detection unit 216 Water level detection unit 217 Exhaust port 218 Blower port 219 Air channel 219a First air channel 219b Second air channel 219c Third Air path 219d Fourth air path 220 Heat pump device 221 Heat absorber 222 Heat radiator 223 Pipe line 224 Compressor 225 Blower 226 Air path switching device 227 Filter 228 Restriction unit 229 Refrigerant Degree detection unit 230 first temperature detector 231 second temperature detector 232 controller 233 operation display unit 233a operating section 233b display unit 234 power switch 235 Bidet button (warm water setting unit)
236 Cloth amount detection unit 301 Water tank 302 Housing 303 Suspension mechanism 304 Drum 304a Rotating shaft 305 Hole 306 Baffle 307 Motor 308 Door 309 Packing 310 Water supply valve 311 Water supply path 312 Drain valve 313 Drain path 314 Washing water heater 315 Water temperature detection unit 316 Water level detector 317 Exhaust port 318 Blower port 319 Air passage 319a First air passage 319b Second air passage 319c Third air passage 319d Fourth air passage 320 Air passage switching device 321 Filter 322 Blower 323 Heat absorber 324 Heat dissipation 325 Pipe 326 Compressor 327 Casing 328 Compressor temperature detection unit 332 Refrigerant temperature detection unit 333 First temperature detection unit 334 Second temperature detection unit 335 Control unit 336 Operation display unit 336a Operation unit 3 6b display section 336c power switch 336d warm water washing button (hot water cleaning setting section)
337 Cloth amount detection part 349 Restriction part 350 Heat pump device

Claims

A water tank elastically supported in the housing;
A drum rotatably provided in the water tank;
A heat pump device in which a refrigerant is circulated through a compressor, a radiator, a constricted portion, and a heat absorber so that the refrigerant circulates;
A first air passage for disposing the radiator and the heat absorber and introducing drying air into the drum;
An air blowing section for blowing air to the first air path;
A water temperature detector for detecting the temperature of the washing water in the water tank;
A warm water washing setting section for setting washing with warm water;
A control unit for controlling the washing operation and the drying operation,
When the warm water cleaning is set by the warm water cleaning setting unit and the warm water cleaning is performed, the washing / drying machine is configured such that the refrigerant does not flow into the compressor before the drying operation.
A heating unit for heating the compressor;
The control unit detects the temperature of washing water at the time of washing or rinsing and before the start of the washing operation,
The laundry dryer according to claim 1, wherein when the temperature of the washing water at the time of washing or rinsing is higher than the temperature before the start of the washing operation, the compressor is heated before the drying operation is started.
A washing water heating unit for heating the washing water in the water tank is provided,
The washing / drying machine according to claim 2, wherein the control unit heats the washing water to the set temperature when the temperature of the washing water is lower than a set temperature set by the warm water washing setting unit.
A second air path for introducing the drying air from the drum through the water tank into the heat pump device;
A third air passage leading from the drum to the outside of the housing through the water tank;
An air path switching device that switches between the second air path and the third air path;
The control unit sequentially controls a washing process, a rinsing process, and a dehydrating process in a washing operation,
The air path switching device switches from the second air path to the third air path before the intermediate dehydration process of the washing process, and after the dehydration process ends, the third air path from the third air path. The washing / drying machine according to claim 1, wherein the washing / drying machine is switched to a second air path.
The third air passage is branched from the second air passage,
The washing / drying machine according to claim 4, wherein the air path switching device is provided at a branch portion between the second air path and the third air path.
In the second air path between the air path switching device and the air outlet, a fourth air path for introducing outside air from outside the housing is provided,
6. The fourth air passage according to claim 4, wherein the fourth air passage is connected to the second air passage on the upstream side of the heat absorber and allows the outside air introduced from the fourth air passage to pass through the heat absorber. Washing and drying machine.
A second air path for introducing the drying air from the drum through the water tank into the heat pump device;
A third air passage branched from the second air passage and leading to the outside of the housing;
An air path switching device for switching between the second air path and the third air path;
A compressor temperature detector for detecting the temperature of the compressor;
A water temperature detection unit for detecting the temperature of the washing water in the water tank,
The control unit sequentially controls a washing process, a rinsing process, and a dewatering process in a washing operation, and before starting the compressor, detects the temperature of the washing water and the compressor,
When the temperature of the washing water is higher than the temperature of the compressor,
The air path switching device switches from the second air path to the third air path before the intermediate dehydration process of the washing process, and after the dehydration process ends, The washing / drying machine according to claim 1, wherein the washing / drying machine is switched to a second air path.
The washing / drying machine according to claim 7, wherein a fourth air passage for introducing outside air from outside the housing is provided in the second air passage while flowing into the drum from the air passage switching device.