JP6178984B2 - Washing and drying machine - Google Patents

Description

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

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

  FIG. 9 is a system diagram of a conventional washer-dryer described in Patent Document 1. As shown in FIG. 9, a compressor 51, a radiator 52, a throttle means 53, and a heat absorber 54 are connected by a pipe line 55 so that a refrigerant circulates, thereby constituting a heat pump device 56. The air passage 57 through which the drying air flows includes a radiator 52 that heats the drying air, a drum 58 that holds a drying object such as clothes to be dried, and a heat absorber 54 that cools and dehumidifies the drying air. Is circulated, and air for drying is blown to the air passage 57 by the blower 59. Arrow A indicates the flow direction of the drying air flowing through the air passage 57, and arrow B indicates the flow direction of the refrigerant flowing through the pipe 55.

  The drying air is heated by the radiator 52 and is introduced into the drum 58 as warm air. The drying air that comes into contact with the clothes i in the drum 58 takes moisture from the clothes i and dries the clothes. Although the temperature of the drying air is reduced because sensible heat is given as the amount of heat for evaporation, the drying air becomes highly humid, including water vapor having substantially the same latent heat released from the clothes. The enthalpy of the drying air before and after contact with the clothing is almost constant. The drying air that has become highly humid is cooled by the heat absorber 54, 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 52.

  On the other hand, in the heat pump cycle, the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 51 is deprived of heat by the radiator 52 and condensed and liquefied. The high-pressure liquid refrigerant exiting the radiator 52 is depressurized by the throttle means 53, becomes a low-temperature and low-pressure liquid refrigerant, enters the heat absorber 54, vaporizes by removing heat from the drying air, and is compressed as a gas refrigerant. Return to machine 51.

  It is known that the heat pump device 56 is deteriorated in drying performance at the start of the drying operation due to a “sleeping phenomenon” in which the refrigerant dissolves in the lubricating oil inside the compressor 51 when stopped. Therefore, it is considered that the compressor is heated before the drying operation is started, and the temperature of the lubricating oil inside the compressor is increased so that the refrigerant dissolved in the lubricating oil is discharged from the lubricating oil (for example, , See Patent Document 2).

JP 2005-52533 A JP 2007-61264 A

  In general, 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 washed with warm water by hot water supply or heating by 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 washing and drying machine, following the washing process with hot water heated before the drying operation, after draining the washing water used in the washing process, an intermediate dehydration process for squeezing out dirt and detergent contained in laundry such as clothing Is performed, and the drum is rotated at a high speed (eg, 900 rpm).

  However, in the conventional configuration, when the drum rotates at high speed, 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 the heated air flows through the air path so that heat absorbers and heat dissipation disposed in the air path are provided. The vessel 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, and by washing with hot water, the refrigerant flows into the stopped compressor before the drying operation, and the heat pump cycle is started at the start of the drying operation. There was a problem that a sufficient drying performance could not be obtained at the start of the drying operation due to a shortage of the refrigerant amount inside.

  An object of the present invention is to solve the conventional problems described above, and an object of the present invention is to provide a laundry dryer having improved drying performance at the start of a drying operation when washing is performed with warm water during washing.

  In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes a water tank elastically supported in a housing, a drum rotatably provided in the water tank, a compressor, a radiator, a throttle means, and a heat absorber. A heat pump device in which a refrigerant is circulated through a conduit, an air passage for disposing the radiator and the heat absorber and introducing drying air into the drum, and a blowing means for blowing air to the air passage; Heating means for heating the compressor; water temperature detecting means for detecting the temperature of the washing water in the aquarium; hot water washing setting means for setting washing with hot water; and control means for controlling the washing operation and the drying operation When the hot water cleaning is set by the hot water cleaning setting means, the control means detects the temperature of the washing water at the time of washing or rinsing and before the start of the washing operation, and the temperature of the washing water at the time of washing or rinsing Is the temperature before the start of washing Ri is higher is obtained so as to heat the compressor before starting the drying operation.

  As a result, even when washing with warm water at the time of washing, the refrigerant can be properly held in the heat pump cycle, and the heat pump cycle can be quickly brought up to an optimum state to improve the drying performance at the start of the drying operation. Can be made.

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

Partial cutaway configuration diagram of the washing and drying machine in Embodiment 1 of the present invention System diagram of the washer / dryer Configuration diagram of heat pump device of the washer / dryer Cross section of the main part of the compressor of the heat pump device of the washing and drying machine Block diagram of the washer / dryer Time chart showing the operation of the washer / dryer Partial cutaway configuration diagram of another example of the washer / dryer Time chart showing the operation of another example of the washer / dryer System diagram of conventional washer / dryer

  In the first invention, a water tank elastically supported in a housing, a drum rotatably provided in the water tank, a compressor, a radiator, a throttle means, and a heat absorber are connected by a pipe line so that the refrigerant circulates. A heat pump device, an air passage for disposing the heat radiator and the heat absorber and introducing drying air into the drum, a blowing means for blowing air to the air passage, a heating means for heating the compressor, Water temperature detecting means for detecting the temperature of the washing water in the aquarium, warm water washing setting means for setting washing with warm water, and control means for controlling washing operation and drying operation, the control means, the warm water washing setting When hot water washing is set by means, the temperature of washing water is detected at the time of washing or rinsing and before the start of washing operation, and when the temperature of washing water at the time of washing or rinsing is higher than the temperature before starting washing operation, Before starting dry operation By heating the compressor, even when washing with warm water at the time of washing, the refrigerant can be properly held in the heat pump cycle, and the heat pump cycle is quickly brought up to an optimal state and dried. The drying performance at the start of operation can be improved.

  That is, the temperature in the aquarium rises in the washing process with high temperature washing water, and the heating in the aquarium is performed by the high-speed rotation of the drum in the intermediate dehydration process performed after the washing process and the dehydration process performed after the rinsing process. The conducted air flows through the air passage, the heat absorber and the radiator disposed in the air passage are heated, and the pressure of the refrigerant rises. At this time, 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, to heat the compressor by energizing the heating means before starting the compressor before the start of the drying operation, Even if the refrigerant flows into the compressor during the intermediate dehydration process or dehydration process, it can be returned to the heat pump cycle before the drying operation is started, and the refrigerant in the heat pump cycle is retained at the start of the drying operation. In addition, the drying performance at the start of the drying operation can be improved.

  In a second aspect of the invention, in particular, in the first aspect of the invention, there is provided a washing water heating means for heating the washing water in the water tank, and the control means is a temperature at which the temperature of the washing water is set by the hot water washing setting means. If the temperature is lower, by heating to the set temperature, when the temperature of the heated washing water is higher than the temperature of the compressor, the refrigerant is heated in the intermediate dehydration process or dehydration process by heating the compressor. Even if it flows in, it can be returned to the heat pump cycle by the time the drying operation is started, and when the remaining water in the bath is used, it can be heated to the set temperature if it is lower than the temperature set in the hot water cleaning. The remaining water in 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.

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

(Embodiment 1)
FIG. 1 is a partially cutaway configuration diagram of a washing / drying machine according to a first embodiment of the present invention, FIG. 2 is a system diagram of the system, FIG. 3 is a configuration diagram of the heat pump device, and FIG. FIG. 5 is a block diagram of the main part of the compressor of the apparatus, and FIG. 6 is a time chart showing the operation of the washer / dryer.

  1 to 6, the water tank 1 is elastically supported in a housing 2 by a plurality of suspension mechanisms 3. The drum 4 has a loading port (not shown) for taking in and out laundry such as clothes a on the front side, is configured in a bottomed cylindrical shape, and is disposed in the water tank 1. The drum 4 is provided so as to be rotatable about the rotation shaft 4a, and accommodates laundry such as clothes a.

The peripheral side wall of the drum 4 is provided with a large number of holes 5 over the entire periphery, and baffles 6 for lifting the laundry in the direction of rotation of the drum 4 are provided at a plurality of locations inside the peripheral side wall of the drum 4. Yes. The water tank 1, the drum 4, and the rotating shaft 4 a are provided so as to be inclined forward and upward at an angle θ (for example, 10 to 20 °) with respect to the horizontal.

  A motor 7 that rotationally drives the drum 4 is provided outside the rear surface side of the water tank 1 so as to rotate the drum 4 forward and backward. The motor 7 is constituted by a brushless DC motor or the like, and the rotation speed can be freely changed by inverter control.

  On the front surface of the housing 2, a door 8 that opens and closes the inlet is provided. A front opening (not shown) of the water tank 1 facing the charging port of the drum 4 is sealed and connected to the housing 2 by a flexible packing 9 that can be expanded and contracted. The door 8 is provided with a transparent window so that the inside of the drum 4 can be seen from the outside.

  When the door 8 is closed, the packing 9 provided at the front opening of the water tank 1 comes into contact with the inner surface of the door 8, and the water tank 1 becomes a watertight and airtight space, and the washing, rinsing, dehydrating and drying processes are executed. In doing so, water and air are prevented from leaking outside.

  A water supply valve 10 that controls the supply of tap water to the water tank 1 is provided in the housing 2. A water supply path 11 communicating with the water tank 1 is connected to the water supply valve 10 via a detergent case (not shown). The water supply path 11 is connected to a water pipe, and the water supply valve 10 can be opened and closed to supply and stop tap water into the water tank 1.

  A drain valve 12 for draining the washing water in the water tank 1 is provided below the rear part of the water tank 1. By opening and closing the drain valve 12, the washing water in the water tank 1 can be drained and stopped through the drain path 13.

  A washing water heater (washing water heating means) 14 for heating the washing water is provided behind the bottom in the water tank 1. The washing water heater 14 is formed by bending a sheathed heater into a substantially U shape, and is attached along the bottom surface of the water tank 1 in the direction in which the rotation shaft 4a extends.

  A space is provided between the washing water heater 14 and the bottom surface of the water tank 1. When the washing water is stored in the water tank 1, the washing water is located under the water surface and immersed in the washing water to heat the washing water. The temperature of the washing water heated by the washing water heater 14 is detected by a water temperature detection means 15 constituted by a thermistor or the like attached to the bottom of the water tank 1.

  The amount of washing water stored in the water tank 1 is detected by the water level detection means 16. The water level detection means 16 has a diaphragm inside, and is constituted by a pressure sensor or the like that detects pressure from the deformation amount of the diaphragm that is deformed when pressure is applied, and detects the water level of the washing water supplied to the water tank 1.

  An exhaust port 17 is provided on the peripheral side wall of the upper front portion of the water tank 1, and a blower port 18 is provided on the back surface of the water tank 1. The exhaust port 17 and the air blowing port 18 are connected in communication by an air passage 19 extending from the front upper side of the water tank 1 toward the rear side.

  The air passage 19 includes a filter 20 that captures lint that passes through the air passage 19 together with the drying air, a blower (air blowing means) 21 that blows the drying air into the drum 4 through the water tank 1, and the air passage 19. A heat absorber 22 that cools and dehumidifies the drying air flowing through the heat sink and a radiator 23 that heats the drying air dehumidified by the heat absorber 22 are provided.

The heat absorber 22 and the radiator 23 are connected to the compressor 25 by a conduit 24 through which the refrigerant flows. The heat pump device 41 includes a compressor 25 that compresses a refrigerant (for example, R134a), a radiator 23 that radiates heat of the compressed high-temperature and high-pressure refrigerant, and a capillary tube or expansion for reducing the pressure of the high-pressure refrigerant. A throttle means 42 composed of a valve or the like and a heat absorber 22 from which the refrigerant, which has been decompressed to a low pressure, takes heat from the surroundings, are connected by a conduit 24 so that the refrigerant circulates.

  The heat absorber 22 and the radiator 23 are constituted by fin tube heat exchangers. The end portions of the heat absorber 22 and the radiator 23 are connected by an end plate 23 a, and a space 23 b is provided between the heat absorber 22 and the radiator 23.

  The conduit 24 through which the refrigerant flows is formed of, for example, a copper tube, and is configured by penetrating the conduit 24 through a plurality of fins arranged in parallel at a predetermined interval in order to form a flow passage of dry air. The fins are formed of, for example, a punched aluminum flat plate having a thickness of 0.08 to 0.2 mm, and the fin pitch is, for example, about 1.2 mm.

  The compressor 25 includes a compression mechanism 27 that compresses a refrigerant and a compressor motor 28 that drives the compression mechanism 27 in a vertical cylindrical casing 26. The compressor motor 28 is composed of a direct current motor so that the rotational speed can be freely changed. The stator 28a is fixed to the inner surface of the casing 26, and the rotor 28b is rotatably provided inside the stator 28a. A crankshaft 28c extending in the vertical direction is attached to the rotation center of the rotor 28b.

  The compression mechanism 27 is a rotary type, is provided below the compressor motor 28, and is connected to the compressor motor 28 via a crankshaft 28c. The piston 27a eccentrically fixed to the crankshaft 28c rotates eccentrically in the cylinder 27b and compresses the refrigerant sucked from the suction port 24a of the conduit 24.

  The compressor 25 is driven by a compressor motor 28, and the refrigerant is pressurized by the compression mechanism 27 to become a high-temperature and high-pressure gas refrigerant, which is discharged from the discharge port 24 b of the pipe line 24 and sent to the radiator 23.

  In the radiator 23, the air is cooled and condensed by the drying air blown to the air passage 19 by the blower 21, and becomes a low-temperature and high-pressure liquid refrigerant. The liquid refrigerant is decompressed by the throttle means 42 and sent to the heat absorber 22. In the heat absorber 22, it comes into contact with the laundry such as clothes a in the drum 4, is heated and evaporated by moist and hot air, becomes a low-temperature and low-pressure gas refrigerant, and is again sucked into the compressor 25 and pressurized. The

  Lubricating oil 29 is stored at the bottom of the casing 26. A crankcase heater (heating means) 30 for heating the compressor 25 is provided below the compressor 25. The crankcase heater 30 is attached so as to surround the casing 26 of the compressor 25. The crankcase heater 30 may be attached so as to heat from the upper part to the lower part of the compressor 25 in order to quickly raise the temperature of the compressor 25.

  An arrow A indicates the flow direction of the drying air flowing through the air passage 19, and an arrow B indicates the flow direction of the refrigerant flowing through the conduit 24.

  A compressor temperature detecting means 31 is provided on the outer peripheral portion of the casing 26 of the compressor 25. The compressor temperature detecting means 31 is composed of a thermistor or the like and detects the temperature of the compressor 25.

  A first refrigerant temperature detection means (refrigerant temperature detection means) 32 a is provided in the pipe line 24 between the compressor 25 and the radiator 23. The first refrigerant temperature detection means 32a is composed of a thermistor or the like, and detects the temperature of the refrigerant discharged from the compressor 25.

  A second refrigerant temperature detecting means (refrigerant temperature detecting means) 32b is provided in the refrigerant condensing part between the refrigerant inflow part and the outflow part of the radiator 23. The second refrigerant temperature detecting means 32b is constituted by a thermistor or the like, and detects the temperature of the refrigerant from the inflow portion where the refrigerant flows into the radiator 23 to the outflow portion where the refrigerant flows out from the radiator 23.

  First temperature detection means 33a and second temperature detection means 33b for detecting the temperature of the drying air flowing through the air passage 19 are provided. The first temperature detection means 33a is composed of a thermistor or the like, and detects the temperature of the drying air flowing into the drum 4 from the blower port 18. The second temperature detection means 33b is composed of a thermistor or the like, and detects the temperature of the drying air flowing out of the drum 4 from the exhaust port 17. From the outputs of the first temperature detection means 33a and the second temperature detection means 33b, the dry state of the laundry such as clothes a in the drum 4 is detected.

  The control means 35 for controlling the washing operation and the drying operation is provided in the upper part of the front surface in the housing 2, and the operation display unit 36 is attached to the front surface of the housing 2. The operation display unit 36 is provided with an operation unit 36a that performs a manual operation of driving and a display unit 36b that displays setting contents, driving conditions, and the like.

  In addition to the power switch 36c, the operation unit 36a is provided with a warm water washing button (hot water washing setting means) 36d for washing with heated washing water, other various setting buttons (not shown), and the like. By using the operation unit 36a, it is possible to arbitrarily select an operation course such as washing and drying and set the operation content.

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

  When washing is performed, the door 8 is opened, laundry such as clothes is put into the drum 4, the power switch 36 c of the operation display unit 36 provided at the upper front of the housing 2 is turned on, and various setting buttons By selecting the driving course and inputting the time of each process as required and starting the driving, the control means 35 can execute a series of operations from washing to drying based on the set contents. it can.

  First, in the washing step, the cloth amount detecting means 37 detects the amount of laundry such as clothes a put in the drum 4. The cloth amount detection means 37 can detect from the current value of the motor 7 when the drum 4 is rotated. A predetermined amount of water is supplied according to the amount of laundry detected by the cloth amount detection means 37. When the water level in the water tank 1 is detected by the water level detection means 16 and a set amount of water is supplied, the water supply valve 10 is closed.

  When water and detergent are supplied into the water tank 1 through the water supply path 11, the drum 4 is driven to rotate by the motor 7, and washing by a stirring operation is started. When the drum 4 is rotated at a predetermined speed (for example, 50 rpm), the laundry such as clothes A is lifted in the rotation direction of the drum 4 by the baffle 6 provided on the inner peripheral surface of the drum 4. By dropping from above, washing by tapping is performed for a predetermined time.

  After the agitation step, the drain valve 12 is opened to drain the washing water in the aquarium 1, and the drum 4 is rotated at a high speed (for example, 900 rpm) to remove dirt and detergent contained in the laundry such as clothes i. An intermediate dehydration step of dehydrating with water is performed. Next, the water supply valve 10 is opened to supply a predetermined amount of new water into the water tank 1, the drum 4 is rotated at a predetermined speed (for example, 50 rpm), and the rinsing process is performed for a predetermined time.

  After performing the rinsing process a predetermined number of times, the washing water in the aquarium 1 is drained, and the drum 4 is rotated at a high speed (for example, 1500 rpm) to dehydrate the moisture contained in the laundry and the remaining detergent. Lastly, finish washing.

  When the drying operation is performed following the washing operation, the process proceeds to the drying step after the dehydration step. In the drying process, the drum 4 is rotated at a predetermined speed (for example, 50 rpm), the laundry is stirred in the drum 4, the blower 21 and the heat pump device 41 are operated, and the drying air is blown into the drum 4. Circulation and refrigerant compression by the compressor 25 are started.

  In the heat pump device 41, the compressor motor 28 of the compressor 25 is driven, the refrigerant is compressed by the compression mechanism 27, and the refrigerant is discharged from the compressor 25 by this pressure. The refrigerant discharged from the compressor 25 flows through the conduit 24 and circulates through the radiator 23, the throttle means 42, the heat absorber 22, and the compressor 25. Since the heat of the compressed refrigerant flows into the radiator 23 and is radiated to the air in contact with the fins provided in the pipes 24 provided in the radiator 23, the drying air flowing through the air path 19 Is heated.

  The heated drying air is supplied into the drum 4 from the air blowing port 18, takes moisture from the laundry, becomes moist air, and is discharged from the exhaust port 17 to the air path 19. As the laundry is dried, lint such as lint is generated from the laundry. The drying air discharged from the exhaust port 17 passes through the filter 20, and lint contained in the air is captured.

  The drying air from which the lint has been removed by the filter 20 is dehumidified by passing sensible heat and latent heat when passing through the heat absorber 22 through which the refrigerant that has been depressurized by the throttle means 42 and has become low pressure flows. Condensed water generated by dehumidification drops to a water storage section (not shown), and the drying air that has been dehumidified and dried passes through the radiator 23 and is heated. The dehumidified condensed water is drained out of the apparatus through the drain valve 12.

  In the drying process, the temperature of the drying air flowing through the air passage 19 is detected by the first temperature detection means 33a and the second temperature detection means 33b. The temperature of the drying air flowing into the drum 4 is detected by the first temperature detection means 33a, and the temperature of the drying air flowing out of the drum 4 is detected by the second temperature detection means 33b. From these outputs, the dryness of the laundry in the drum 4 is detected. When a predetermined dryness is detected, the drying process is terminated.

  On the other hand, in the heat pump device 41, the heat of the high-temperature and high-pressure gas refrigerant compressed and vaporized by the compressor 25 is deprived by the drying air passing through the radiator 23 and condensed, and the pressure is reduced by the throttle means 42, and the The refrigerant is deprived of heat from the drying air by the heat absorber 22 and is vaporized to return to the compressor 25 again as a low-temperature and low-pressure gas refrigerant.

  Controlling the driving of the compressor motor 28 so that the refrigerant temperature (refrigerant condensation temperature) detected by the second refrigerant temperature detection means 32b is maintained within a predetermined temperature range (for example, 60 ° C. to 70 ° C.), The operation of the compressor 25 is stabilized, and a safe and stable heat pump cycle is realized.

  Further, in order to ensure insulation of the compressor motor 28, compression is performed so that the temperature of the refrigerant discharged from the compressor 25 detected by the first refrigerant temperature detection means 32a is equal to or lower than a predetermined temperature (for example, 100 ° C.). The drive of the machine motor 28 is controlled.

Next, a case where washing is performed with warm water and then drying is described. At the start of washing, “Laundry drying course” is selected by the operation unit 36a of the operation display unit 36, “Warm water washing” is selected by the hot water washing button 36d of the operation unit 36a, and the temperature of the washing water (for example, 40 ° C.) Set. Washing with warm water is advantageous for washing when the water temperature is low because dirt can easily be removed and the cleaning power can be increased.

  When the amount of laundry put into the drum 4 is detected by the cloth amount detection means 37 and the amount of washing water set according to the amount of laundry is supplied into the aquarium 1, the control means 35 Before the start of operation, the temperature of the washing water stored in the water tank 1 is detected by the water temperature detecting means 15. The control means 35 compares the set temperature of the wash water with the temperature detected by the water temperature detection means 15 to control the energization of the wash water heater 14 and heat the wash water to the set temperature.

  As shown in FIG. 6, in the washing process, when the washing water is supplied into the water tank 1 and a preset water level is detected by the water level detection means 16, the washing water heater 14 is energized and the washing is performed at the set temperature. Heat the water. The timing for starting energization of the washing water heater 14 is preferably a state in which the washing water heater 14 is at least in contact with the washing water and is submerged in the washing water.

  Note that the washing water heater 14 may be energized after the amount of washing water set according to the amount of laundry is supplied into the water tank 1. When the set amount of wash water is supplied to the water tank 1, 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.) by the start of energization to the washing water heater 14, and is energized when the temperature reaches the temperature T2 (for example, 40 ° C.) set in the “warm water washing”. Stop.

  At this time, if the temperature of the washing water becomes higher than the temperature detected by the water temperature detection means 15 before the start of the washing operation, the crankcase heater 30 is energized until the temperature of the compressor 25 reaches the maximum water temperature during washing. Heat. If the temperature of the compressor 25 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 step is executed in a state where the temperature in the water tank 1 has increased in the washing process with the heated washing water, the heated air in the water tank 1 flows through the air passage 19 by the high-speed rotation of the drum 4, The heat absorber 22 and the radiator 23 arranged in the air path 19 are heated. When the heat absorber 22 and the radiator 23 in the heat pump cycle are heated, the pressure of the refrigerant rises and the refrigerant flows into the compressor 25.

  In the crankcase heater 30, the temperature of the compressor 25 becomes the maximum temperature of the washing water before the start of the drying operation, that is, before the compressor 25 is driven in the drying process, from the intermediate dehydration process to the dehydration process. Energize until heated.

  Thereby, when the temperature in the air path 19 rises with the heat of the heated washing water, the heat absorber 22 and the radiator 23 are heated in the intermediate dehydration step, and the refrigerant in the heat pump cycle flows into the compressor 25. However, since the compressor 25 is heated before the start of the drying operation, the refrigerant staying in the compressor 25 can be returned to the heat pump cycle, and the refrigerant is held in the heat pump cycle to start the drying operation. The drying performance can be improved.

  By providing water temperature detecting means 15 for detecting the temperature of the washing water at the bottom of the water tank 1, the temperature before the washing operation of the washing water stored in the water tank 1 and the temperature at the time of washing or rinsing are detected with the same water temperature. It can be detected by means 15 and can be compared with high accuracy.

When the remaining water of the bath is used as the washing water, the temperature of the bath water supplied to the water tank 1 and detected is detected by the water temperature detecting means 15, and if the temperature is lower than the temperature set by the hot water washing, the washing water The heater 14 can be heated up to a set temperature.

  Thereby, when the temperature of the bath water heated to the set temperature is higher than the temperature detected by the water temperature detection means 15 before the start of the washing operation, the compressor 25 is heated, so that the intermediate dehydration process and the dehydration process are performed. Even when the refrigerant flows into the compressor 25, it can be returned to the heat pump cycle before the drying operation is started, the remaining water in the bath can be used effectively, and the amount of remaining bath water is small. The cleaning effect can be enhanced by heating to a predetermined temperature with energy.

  FIG. 7 is a partially cutaway main portion configuration diagram of a washing and drying machine of another example of the present embodiment, and is provided with a hot water supply device 43 that supplies heated hot water to the water tank 1 so as to be connectable. A hot water supply connection 44 is provided in the water supply path 11 connected to the water supply, and a hot water supply (hot water supply means) 43 is configured to be connectable, and a hot water supply valve 45 for supplying and stopping hot water from the water heater 43 to the water tank 1 is provided. ing. When “warm water washing” and “hot water supply” are set, the control means 35 supplies hot water heated to a predetermined temperature from the water heater 43 to the water tank 1.

  In the washing process, the water supply valve 10 is opened to supply tap water, the hot water supply valve 45 is opened to supply hot water from the hot water heater 43, mixed with tap water, and supplied to the water tank 1. The temperature of the mixed water flowing through the water supply path 11 is detected by the water supply temperature detecting means 46. The feed water temperature detection means 46 is composed of a thermistor or the like, and is provided in the feed water path 11 to detect the temperature of the mixed water flowing into the water tank 1.

  The control means 35 controls the water supply valve 10 and the hot water supply valve 45 from the output of the water supply temperature detection means 46 so that the temperature of the mixed water B becomes the wash water at the set temperature. Further, the temperature of the washing water accumulated in the water tank 1 is detected by the water temperature detecting means 15, and the water supply valve is set so that the temperature of the washing water in the water tank 1 becomes a set temperature in preference to the output of the water supply temperature detecting means 46. 10 and hot water supply valve 45 are controlled.

  In addition to the above, the temperature of the washing water stored in the water tank 1 may be heated to a set temperature by the water heater 43. If the set temperature is high, the washing water heater 14 is used in combination. Also good. In the rinsing process, hot water may be supplied from the water heater 43 and rinsed with warm water.

  When the water heater 43 is used, the washing water heater 14 for heating the washing water in the water tank 1 is not necessarily required. The temperature of the washing water in the water tank 1 before washing operation and at the time of washing or rinsing is determined. It only has to be detected and compared.

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

  The washing water supplied in the rinsing process (rinsing water) is heated from the ambient temperature T1 (for example, 20 ° C.) when the energization of the washing water heater 14 is started, and is set when setting the rinsing temperature for hot water washing. When the temperature reaches T2 (for example, 40 ° C.), the energization is stopped.

  At this time, if the temperature of the washing water is higher than the temperature detected by the water temperature detection means 15 before the start of the washing operation, the crankcase heater 30 is energized until the temperature of the compressor 25 reaches the maximum washing water temperature. Heat. If the temperature of the compressor 25 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, just like when performing hot water cleaning in the washing process, and quickly optimizes the heat pump cycle. It is possible to improve the drying performance when starting the drying operation.

  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 to detect the timing of detecting the water temperature after a predetermined time has elapsed since the start of washing or rinsing water supply, and in a state where the washing water in the washing or rinsing process is heated to a predetermined temperature.

  As described above, in the present embodiment, the water tank 1 elastically supported in the housing 2, the drum 4 rotatably provided in the water tank 1, the compressor 25, the radiator 23, the throttle means 42, and the heat absorption. A heat pump device 41 connected by a conduit 24 so that the refrigerant circulates through the heat generator 22, an air passage 19 for disposing the heat radiator 23 and the heat absorber 22, and introducing drying air into the drum 4; Blowing means 21 for blowing air, heating means 30 for heating the compressor 25, water temperature detecting means 15 for detecting the temperature of the washing water in the aquarium 1, hot water washing setting means 36d for setting washing with hot water, and washing operation And control means 35 for controlling the drying operation. When the hot water washing is set by the hot water washing setting means 36d, the control means 35 detects the temperature of the washing water at the time of washing or rinsing and before starting the washing operation. When washing or rinsing When the temperature of the washing water is higher than the temperature before the start of the washing operation, the compressor 25 is heated before the drying operation is started. Even when washing with warm water is performed, at the start of the drying operation. The refrigerant in the heat pump cycle can be held, and 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.

  In addition, the temperature of the washing water at the time of warm water washing can be set to an optimum temperature according to the kind and property of the laundry and the purpose.

  Further, in the present embodiment, the temperature of the compressor 25 is detected by the compressor temperature detection means 31, but the first refrigerant temperature detection attached to the pipe line 24 in the vicinity where the refrigerant is discharged from the compressor 25. The means 32a may be substituted.

  Further, the temperature at which the compressor 25 is heated is not necessarily the same as the maximum temperature of the washing water detected by the water temperature detecting means 15 so that the refrigerant pressure in the heat pump cycle is balanced and maintained. What is necessary is just to be heated.

  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 is performed with warm water during washing.

DESCRIPTION OF SYMBOLS 1 Water tank 2 Housing | casing 4 Drum 15 Water temperature detection means 19 Air path 21 Blower (blower means)
22 Heat absorber 23 Heat radiator 24 Pipe line 25 Compressor 30 Crankcase heater (heating means)
35 Control means 36d Hot water washing button (hot water washing setting means)
41 heat pump device 42 throttling means

Claims (2)

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 throttle means, and a heat absorber so that the refrigerant circulates;
An air path for disposing the radiator and the heat absorber and introducing drying air into the drum;
A blowing means for blowing air to the air path;
Heating means for heating the compressor;
Water temperature detecting means for detecting the temperature of the washing water in the water tank;
Hot water washing setting means for setting washing with hot water;
Control means for controlling the washing operation and the drying operation,
When the hot water washing is set by the hot water washing setting means, the control means detects the temperature of the washing water at the time of washing or rinsing and before starting the washing operation,
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 laundry dryer is configured to heat the compressor before starting the drying operation. A washing water heating means for heating the washing water in the water tank is provided,
2. The laundry dryer according to claim 1, wherein the control means heats up to a set temperature when the temperature of the wash water is lower than the temperature set by the hot water washing setting means.

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