JP4507966B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing / drying machine that performs washing / dehydration and drying in the same rotating tank.

  In a conventional washing / drying machine, there are one using a heater as a heat source for drying clothes, and one using a heat pump device as a heat source (see, for example, Patent Document 1).

  Below, the conventional washing-drying machine described in the said patent document is demonstrated using FIG. FIG. 6 is a side sectional view of a conventional washing / drying machine.

  In FIG. 6, the washing / drying machine 1 has a housing 2, a door 12 for attaching and removing clothes 6 is attached to the center of the housing 2, and a rotating drum 3 is accommodated therein. A predetermined portion of the rotating drum 3 is provided with a beater 5 for lifting and dropping the clothing 6 along with the rotation of the rotating drum 3, and a punching hole 4 through which washing water 7 and circulating air 9 for drying enter and exit. is there.

  The shaft 11 of the rotating drum 3 receives power for rotation from a driving motor (not shown). The rear surface of the rotating drum 3 in the housing 2 is partitioned by a partition wall 22 except for the air inlet 24 and the air outlet 23, and ducts 10 and 13 through which the circulating air 9 passes are formed. The lower part of the front surface of the partition wall 22 constitutes a washing tub 14, and the lower part of the rotating drum 3 faces the portion of the washing tub 14.

  Each of the air ducts 10 and 13 includes a compressor 19, a condenser (condenser) 18, a fan 17, an expansion valve 20, an evaporator (evaporator) 15, and the like, and a so-called heat pump cycle is formed. Further, a part of the capacitor 18 is extended to the outer back surface of the housing 2 to form a radiator 16. 21 is a drain drain pipe, and 8 is a washing drain pipe.

  Next, the operation and action in each process of the conventional washing / drying machine will be described.

  In the washing and rinsing step, the door 12 is opened, the clothes 6 and an appropriate amount of detergent are put into the rotating drum 3, the door 12 is closed, and the following steps are executed. A prescribed amount of water 7 is supplied from a water supply valve (not shown) to the washing tub 14 up to the position of the water level A. The rotating drum 3 rotates continuously or intermittently at the programmed number of rotations to perform cleaning. During this time, the garment 6 is lifted and dropped by the beater 5. After the washing is finished, the dirty water 7 is drained out of the machine from the washing drain pipe 8 of the washing tub 14.

  Subsequently, the rinsing process is performed in the same process. Rinsing water is also drained out of the machine from the washing drain pipe 8 as washing drain. In the dehydration step, the rotating drum 3 rotates at a programmed number of rotations to dehydrate moisture in the clothing 6. The dewatered water is drained out of the machine from the washing drain pipe 8 as washing drain. In the drying process, the compressor 19, the fan 17 and the rotating drum 3 are operated, and the circulating air 9 circulates inside the ducts 10 and 13 and the rotating drum 3.

The water vapor evaporated from the clothing 6 comes into contact with the evaporator 15 through the air outlet 23 and the duct 10 together with the circulating air 9, and is cooled to be condensed water (condensed water) to be dehumidified. The dehumidified circulating air 9 is sent to the condenser 18 by the fan 17, heated there to become hot air, flows into the rotary drum 3 through the duct 13 and the air inlet 24, and evaporates moisture from the clothing 6 again. . Condensed water generated by dehumidification by the evaporator 15 is drained out of the apparatus through a drain drain pipe 21.

During this time, the rotating drum 3 rotates continuously or intermittently at a preset number of rotations as in the washing process. The process of continuously performing from washing to drying has been described above.
Japanese Examined Patent Publication No. 6-75628

  However, since the heat pump device provided in the conventional washing and drying machine has many components such as the compressor 19, the refrigerant, the condenser 18, the evaporator 15, and the like, and has a large heat capacity, the temperature rise is slow compared with a normal electric heater. Therefore, there is a problem that it takes time until the drying air supplied into the rotary drum 3 reaches a predetermined temperature after the motor of the compressor 19 is energized, resulting in a long drying time.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a washing / drying machine having a short drying time.

In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes a water tank supported in a housing, a rotary tank that is rotatably provided in the water tank and stores clothes, and the rotary tank is driven to rotate. Driving motor, heat pump device for dehumidifying and heating air , air blowing means for circulating air between the rotating tank and the heat pump device, and controlling the operation of the driving motor, the heat pump device, and the air blowing means and, washing, rinsing, dehydration, and control means for controlling a series of steps such as drying, heat pump device includes a compressor for compressing a refrigerant, a radiator for radiating heat of the compressed said refrigerant The control means is configured to connect a throttle means for reducing the pressure of the high-pressure refrigerant and a heat absorber that takes the heat from the surroundings of the reduced-pressure low-pressure refrigerant so that the refrigerant circulates, and the control means , It starts the driving of the compressor and the blower means from the dehydration step before entering the drying process, the sum of the input current amount in the dehydration step, without reducing the input current of the drive motor, a predetermined so as not to exceed the input current amount, which was possible to set the input current of the input current amount and the blowing means of the compressor, the driving start of the previous dehydration step compressor and blowing means from the drying process In addition, since the drying air can be heated according to the input current limitation without degrading the dehydrating function in the dehydrating process, the temperature of the drying air rises quickly after entering the drying process, and drying is performed. Time can be shortened.

Further, the washing and drying machine of the present invention includes a water tank supported in a housing, a rotating tank that is rotatably provided in the water tank and accommodates clothes, a drive motor that rotationally drives the rotating tank, and a dehumidifying air And heat pump device for heating, air blowing means for circulating air between the rotary tank and the heat pump device, and controlling the operation of the drive motor, the heat pump device, and the air blowing device to perform washing, rinsing, dehydration A control means for controlling a series of processes such as drying, and a current amount detection means connected to the control means for detecting a current amount flowing from an AC power source, wherein the heat pump device includes a compressor for compressing a refrigerant; A refrigerant that radiates heat of the compressed refrigerant, a throttle means that reduces the pressure of the high-pressure refrigerant, and a heat absorber that takes the heat from the surroundings when the pressure is reduced to low pressure. Is constructed by connecting in line to ring, said control means is configured to start the compressor drive than the previous dehydration step of entering the drying process, in this dehydration step, the current amount detecting means detects The input power of the compressor is set so that the amount of current flowing from the AC power supply does not exceed a predetermined value without reducing the input current amount of the drive motor.
The flow rate is controlled so that the compressor and the air blower start to be driven from the dehydration process before the drying process. By heating the drying air by controlling the compression capacity of the compressor in accordance with the operating state of the load, the temperature of the drying air rises quickly after entering the drying process, and the drying time can be shortened.

In the laundry dryer of the present invention, the driving of the compressor is started from the dehydration step before the drying step , and heating of the drying air is started without deteriorating the dehydration functionality in the dehydration step. The temperature of the drying air rises quickly after entering the process, and the drying time in the drying process can be shortened.

1st invention performs the dehumidification and heating of the water tank supported in the housing | casing, the rotating tank which is rotatably provided in the said water tank, and accommodates clothing, the drive motor which rotationally drives the said rotating tank, and air Controlling the operation of the heat pump device, air blowing means for circulating air between the rotary tank and the heat pump device, the drive motor, the heat pump device, the air blowing means , such as washing, rinsing, dehydration, drying, etc. Control means for controlling a series of steps, wherein the heat pump device includes a compressor that compresses the refrigerant, a radiator that radiates heat of the compressed refrigerant, and a throttle means that reduces the pressure of the high-pressure refrigerant. And the refrigerant that has been depressurized to a low pressure is connected by a pipe line so that the refrigerant circulates and a heat absorber that draws heat from the surroundings, and the control means is more than the dehydration process before entering the drying process. The pressure It starts the drive of the machine and the blowing means, so that the sum of the input current amount in the dehydration step, without reducing the input current of the drive motor, does not exceed a predetermined input current amount, the compressor of obtained by way to set the input current of the input current amount and the blowing means, the drive starts the compressor and blowing means than the previous dehydration step of the drying process, and reduce the functionality of dehydration in the dehydration step Since the drying air can be heated according to the restriction of the input current without causing the temperature to rise, the temperature of the drying air rises quickly after entering the drying process, and the drying time can be shortened.

2nd invention performs the dehumidification and heating of the water tank supported in the housing | casing, the rotating tank which is rotatably provided in the said water tank, and accommodates clothing, the drive motor which rotationally drives the said rotating tank, and air Controlling the operation of the heat pump device, air blowing means for circulating air between the rotary tank and the heat pump device, the drive motor, the heat pump device, the air blowing means , such as washing, rinsing, dehydration, drying, etc. A control unit that controls a series of steps; and a current amount detection unit that is connected to the control unit and detects a current amount flowing from an AC power source. The heat pump device includes: a compressor that compresses a refrigerant; The refrigerant circulates through a radiator that radiates the heat of the refrigerant, a throttle means that reduces the pressure of the high-pressure refrigerant, and a heat absorber that takes the heat from the surroundings when the pressure is reduced to a low pressure. Is constructed by connecting in road, the control unit is configured to start the compressor drive than the previous dehydration step of entering the drying process, in this dehydration process, flows from the AC power source the current amount detecting means detects The input current amount of the compressor is controlled so that the current amount does not exceed a predetermined value without reducing the input current amount of the drive motor. From the dehydration step before the drying step The compressor and the air blower are driven, and drying is performed by controlling the compression capacity of the compressor according to the operating state of other loads according to the input current limit without deteriorating the dehydration functionality in the dewatering process. By heating the air, the temperature rise of the drying air after entering the drying process is accelerated, and the drying time can be shortened.

  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 an external perspective view of a washing / drying machine according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view as viewed from the back side of the housing, and FIG. 3 is a ZZ cross-sectional view of FIG. FIG. 4 is a system conceptual diagram showing the configuration of the heat pump device of the washing and drying machine and the flow of drying air.

  1 to 4, a cylindrical water tank 33 elastically supported by a plurality of suspensions 32 is provided inside the casing 31, and vibrations during washing and dehydration are absorbed by the suspensions 32. Inside the water tank 33, a cylindrical and horizontal axis type rotating tank 35 for storing the clothes 34 is rotatably provided, and is rotated by a drive motor 36. On the front surface of the housing 31, there are provided an opening 31a for taking in and out the garment 34 and a door 37 for opening and closing it. Similar openings 33 a and 35 b are also provided on the front side of the water tank 33 and the rotating tank 35, and the opening 33 a of the water tank 33 is water-tightly connected to the opening 31 a of the housing 31 by a bellows 38. The bottom of the water tank 33 has a drain port 39 for discharging washing water and is connected to a drain valve 40.

  Reference numeral 42 denotes a blower serving as a blower for circulating air, and is provided on the upper portion of the water tank 33 so as to be positioned in a corner space formed by the upper surface 31c and the side surface 31d of the housing 31. The blower 42 communicates with an air supply duct 50 provided on the outer surface of the water tank 33, and blows air in the direction of the arrow c from the air supply duct inlet 51 of the air supply duct 50 to enter the rotary tank 35 from the air supply port 44. To supply. Further, an exhaust duct 52 communicating with an exhaust port 46 provided on the rear surface of the water tank 33 is provided on the outer surface of the water tank 33, and the air that has passed through the rotary tank 35 and the water tank 33 and has exited the exhaust port 46 is indicated by an arrow d. To the exhaust duct outlet 53 as shown in FIG.

  A heat pump device 59 that performs dehumidification and heating of air is disposed below the water tank 33. A heat sink air passage 61 for flowing air in the direction of arrow a to the heat sink 60 comprising a heat exchanger constituting the heat pump device 59, and heat radiation for flowing air in the direction of arrow b to a radiator 62 similarly comprising a heat exchanger The heat sink air passage 63 is arranged in the horizontal direction, and the heat absorber air passage 61 and the radiator air passage 63 communicate with each other through the circulation duct 64 so that the air passing through the heat absorber 60 and the heat radiator 62 is linear. It comes to flow.

  The heat absorber air passage 61, the radiator air passage 63, and the circulation duct 64 are integrally formed and are fixed to an attachment base 65 in the housing 31. The inlet of the heat absorber air passage 61 and the exhaust duct outlet 53 communicate with each other via a bellows-like extendable flexible hose 66. Similarly, the outlet of the radiator air passage 63 and the air supply duct inlet 51 communicate with each other via a bellows-like extendable / flexible hose 67. Further, an air filter 68 made of a synthetic fiber net or the like is detachably provided at the inlet portion of the heat absorber air passage 61 as filter means for removing foreign substances in the air. Furthermore, a discharge port 69 for discharging dehumidified water generated in the heat absorber 60 is provided in a lower portion on the downstream side of the heat absorber air passage 61.

  With the above configuration, the drying air blown by the blower 42 passes through the air supply duct 50 and enters the rotary tank 35 through the air supply port 44 as shown by the arrow 70 in FIG. 4, and the clothing 34 in the rotary tank 35. After passing through the exhaust port 46, through the exhaust duct 52, through the heat absorber 60 of the heat absorber air passage 61, and through the circulation duct 64 through the radiator 62 of the radiator air passage 63. It returns to the air blower 42 and circulates.

  Further, the heat pump device 59 includes a compressor 71, a radiator 62 that radiates heat of the compressed refrigerant, a throttle means 72 that includes a throttle valve, a capillary tube, and the like for reducing the pressure of the high-pressure refrigerant, and a reduced pressure. The refrigerant having a low pressure is connected by a pipe 73 so that the refrigerant circulates through the heat absorber 60 that takes heat from the surroundings, and the refrigerant flows and circulates in the direction of an arrow 74 to realize a heat pump cycle. The refrigerant may be a chlorofluorocarbon-based refrigerant used in an air conditioner or a refrigerator. However, if carbon dioxide gas is used as the refrigerant, it is possible to release higher-temperature heat, which is suitable for drying clothes.

  The control means 75 is electrically connected to the drive motor 36, the blower 42, the compressor 71, etc., and controls these operations, and controls a series of steps as a washing and drying machine such as washing, rinsing, dehydration, and drying.

  The operation and action of the washing / drying machine having the above configuration will be described.

  In the washing process, water is supplied to the water tank 33 with the drain valve 40 closed until a predetermined water level is reached, and the drive motor 36 rotates the clothes 34 and the rotating tank 35 containing water to perform washing and rinsing.

  In the dehydration process after the washing process is completed, the drain valve 40 is opened to drain water to the outside of the machine, and then the rotating tub 35 containing the clothes 34 is rotated at high speed by the drive motor 36 to perform dehydration. The machine 71 and the blower 42 are operated. When the compressor 71 operates, the refrigerant is compressed, and this pressure causes the refrigerant to circulate through the radiator 61, the throttle means 72, and the heat absorber 60. In the radiator 62, heat is released by the compression of the refrigerant, and in the heat absorber 60, the heat is absorbed by the refrigerant that has been decompressed by the throttle means 72 and becomes low pressure. When the blower 42 operates, the warm air heated by the heat radiation of the radiator 62 is blown into the rotary tank 35 from the air supply port 44 through the air supply duct 50.

  At this time, the maximum current amount in the dehydration process when the compressor 71 and the blower 42 are stopped is measured in advance with respect to the control means 75, and the current amount in a situation where use is assumed for the value. Predetermined input currents of the compressor 71 and the blower 42 that do not exceed the upper limit (15 amperes for a general household, etc.) are set, so that the respective predetermined input currents are not exceeded for each process. The capacity of the compressor 71 and the blower 42 is controlled. As a result, the compressor 71 can be operated without deteriorating the dehydrating functionality, and the temperature rise of the drying air after entering the drying step can be accelerated and the drying time can be shortened.

  Next, in the drying process, the control means 75 operates the compressor 71 and the blower 42. At this time, since the compressor 71 is already energized and preheated during the dehydration step, the heat of the refrigerant that has been compressed and heated is not deprived by the compressor 71, and the temperature of the refrigerant rises quickly. The rotating tub 35 is rotationally driven by a drive motor 36, and the clothes 34 are stirred up and down.

  The warm air blown into the rotary tank 35 takes away moisture when passing through the gap between the clothes 34, passes through the exhaust duct 52 and the flexible hose 66 through the exhaust port 46 of the water tank 33 in the wet state, and passes through the air filter 66. The foreign matter such as lint is removed through the heat sink and reaches the heat sink air passage 61. When the wet warm air passes through the heat absorber 60, the sensible heat and latent heat are deprived and dehumidified, and separated into dry air and dehumidified water. The dry air enters the radiator air passage 63 through the circulation duct 64, is heated again by the radiator 62, becomes hot air, passes through the flexible hose 67, the air supply duct 50, and circulates to the blower 42.

  On the other hand, the dehumidified water dewed by the heat absorber 60 is discharged from the bottom outlet 69 to the outside of the apparatus. By using the heat pump device 59 in this manner, the heat absorbed by the heat absorber 60 can be recovered by the refrigerant and radiated again by the radiator 62 to give the garment 34 more heat than the energy input to the compressor 71. As a result, drying time can be shortened and energy can be saved.

  As described above, in the dehydration process before the drying process, the control means 75 can start driving the compressor 71 and can control the compression capacity of the compressor 71 according to the restriction of the input current. In this process, the drying air is heated according to the restriction of the input current, and the temperature rise of the drying air after entering the drying process is accelerated, and the drying time is shortened.

  In the above embodiment, the compressor 71 and the blower 42 are operated when the dehydration process is started. However, the compressor 71 and the blower 42 may be operated. In this case, it is possible to measure the maximum current amount when the compressor 71 and the blower 42 are stopped for each process, and to set predetermined input currents of the compressor 71 and the blower 42 for each process. desirable.

  In addition, although the respective capacities of the compressor 71 and the blower 42 are controlled, only one of the capacities may be controlled.

  Moreover, although the household AC power supply was given as an example, the drying time can be shortened by performing the same control when the current is limited even for business use.

(Embodiment 2)
FIG. 5 is a system conceptual diagram showing the configuration of the heat pump device of the washing / drying machine and the flow of drying air in the second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the present embodiment, as shown in FIG. 5, a current amount detection unit 76 that detects the amount of current flowing from the AC power supply is provided, and the operation of the compressor 71 according to the current detected by the current amount detection unit 76. The other configurations are the same as those in the first embodiment.

  In the dehydration process after the washing process is completed, the drain valve 40 is opened to drain water to the outside of the machine, and then the rotating tub 35 containing the clothes 34 is rotated at high speed by the drive motor 36 to perform dehydration. The machine 71 and the blower 42 are operated. When the compressor 71 operates, the refrigerant is compressed, and this pressure causes the refrigerant to circulate through the radiator 61, the throttle means 72, and the heat absorber 60. In the radiator 62, heat is released by the compression of the refrigerant, and in the heat absorber 60, the heat is absorbed by the refrigerant that has been decompressed by the throttle means 72 and becomes low pressure. When the blower 42 operates, the warm air heated by the heat radiation of the radiator 62 is blown into the rotary tank 35 from the air supply port 44 through the air supply duct 50.

  At this time, the amount of current flowing from the AC power source is detected by the current amount detection means 76. In the home AC power supply, for example, an upper limit value of current such as 15 amperes is set, so when the current value by the current amount detection means 76 approaches the upper limit value of the current, for example, when it exceeds 14 amperes, The control means 75 reduces the compression capacity of the compressor 71 and reduces the input current to the compressor 71, thereby reducing the current value flowing from the AC power supply. Thereby, the compressor 71 can be operated efficiently without deteriorating the dehydrating functionality, and the temperature rise of the drying air after entering the drying process can be accelerated and the drying time can be shortened.

  As described above, in the dehydration process, the control means 75 starts driving the compressor 71 and controls the compression capacity of the compressor 71 according to the current value detected by the current detection means 76 according to the input current limit. The drying air is heated according to the amount of input current that fluctuates depending on the operating state of other loads in the process prior to drying, and the temperature of the drying air rises quickly after entering the drying process. Time can be shortened.

  In the present embodiment, the compressor 71 and the air blower 42 are operated when the dehydration process is started. However, the compressor 71 and the air blower 42 may be operated.

  As described above, the washing / drying machine according to the present invention can shorten the drying time in the drying process by starting the driving of the compressor and starting the drying air before the drying process. It is useful for washing machines that are equipped with a device and perform drying and dehumidification.

1 is an external perspective view of a washing / drying machine according to Embodiment 1 of the present invention. Sectional view seen from the back side of the case of the washer / dryer ZZ sectional view of FIG. System conceptual diagram showing the configuration of the heat pump device and the flow of dry air in the washer / dryer The system conceptual diagram which shows the structure of the heat pump apparatus of the washing dryer in Embodiment 2 of this invention, and the flow of dry air Cross-sectional view of a conventional washing and drying machine

31 Housing 33 Water tank 34 Clothes 35 Rotating tank 42 Blower (Blower unit)
59 heat pump device 60 heat absorber 62 heat radiator 71 compressor 72 throttling means 73 conduit 75 control means 76 current detection means

Claims (2)

A water tank supported in a housing, a rotary tank that is rotatably provided in the water tank and accommodates clothes, a drive motor that rotationally drives the rotary tank , a heat pump device that dehumidifies and heats the air, and the rotation A blower that circulates air between the tank and the heat pump device, and the operation of the drive motor, the heat pump device, and the blower unit are controlled to control a series of processes such as washing, rinsing, dehydration, and drying. The heat pump device includes: a compressor that compresses the refrigerant; a radiator that radiates heat of the compressed refrigerant; a throttle means that depressurizes the high-pressure refrigerant; is constituted by a heat absorber connected in line so the refrigerant circulates to the refrigerant becomes deprives heat from the surroundings and, the control means, the compressor and the from the previous dehydration step of entering the drying process Starts the driving of the wind means, the sum of the input current amount in the dehydration step, without reducing the input current of the drive motor, so as not to exceed a predetermined input current amount, the input current of said compressor washing dryer so as to set the input current amount and the amount of the blowing means. A water tank supported in a housing, a rotary tank that is rotatably provided in the water tank and accommodates clothes, a drive motor that rotationally drives the rotary tank , a heat pump device that dehumidifies and heats the air, and the rotation A blower that circulates air between the tank and the heat pump device, and the operation of the drive motor, the heat pump device, and the blower unit are controlled to control a series of processes such as washing, rinsing, dehydration, and drying. Control means; and current amount detection means connected to the control means for detecting an amount of current flowing from an AC power source, wherein the heat pump device radiates heat of the compressed refrigerant and a compressor that compresses the refrigerant. And a heat sink that reduces the pressure of the high-pressure refrigerant, and a heat absorber that takes the heat from the surroundings when the reduced-pressure and low-pressure refrigerant is connected to each other through a pipe line. Made, the control unit is configured to start the compressor drive than the previous dehydration step of entering the drying process, in this dewatering step, the amount of current flowing from the AC power source the current amount detecting means is detected, The washing / drying machine configured to control the input current amount of the compressor so as not to exceed a predetermined value without decreasing the input current amount of the drive motor .