TWI660088B - Washer dryer - Google Patents

Abstract

The present invention provides a washer-dryer, which can effectively prevent the temperature of the laundry from rising excessively while heating the laundry such as a heat-resistant blanket, and efficiently kill dust mites while protecting the laundry from overheating.

A heating process for supplying warm air is performed in the washing tank, and during the heating process, a water supply unit supplies water in the washing tank to perform a cooling process for cooling the laundry.

Description

Washer dryer

[0001] The present invention relates to a washer-dryer capable of washing a blanket or a quilt.

[0002] In order to clean blankets and quilts that have many opportunities to directly contact human skin, they are generally washed and dried, and removed with a vacuum cleaner. Dust mites and debris can be removed by washing and sweeping, but washing and drying is not easy to kill the dust mites, and it is not easy to suck and remove dust mites tightly attached to the fibers of thick blankets or quilts. [0003] An experimental result has been published that the house's most dust mites (Pyroglyphidae) are not heat-resistant, and can be killed 100% when kept at a temperature above 50 ° C for 20 minutes. [0004] Patent Document 1 describes such a washing machine having a function of killing dust mites by heat. This patent document 1 describes "a washing machine with a sterilization and dust-mite killing function, comprising: a washing tank for washing and washing; and a steam generating means or hot water supplying means for supplying steam to the washing tank. The generating means or hot water supply means operates after the clothes are put into the washing tank and the water is supplied, and steam or hot water is supplied to the clothes from above the washing tank, and then the normal washing cycle is started. " [Prior Art Document] [Patent Document] [0005] [Patent Document 1] Japanese Patent No. 2639045

The purpose is to sterilize and kill dust mites with steam or hot water. However, in the past, the effect of steam penetration has hardly been expected in the inner or lower part of a folded blanket or quilt.

In addition, ordinary blankets are made of chemical fibers such as acrylic or polyester, and are heat-resistant. Therefore, the fiber itself may be deformed due to steam or hot water, and the texture may become hard.

Therefore, an object of the present invention is to provide a washer-dryer, which can effectively prevent the temperature of the laundry from rising excessively while heating the laundry such as a heat-resistant blanket, and efficiently kill the laundry while protecting the laundry from overheating. dust mite.

In order to achieve the foregoing object, the present invention is a washer-dryer, which is characterized by comprising: a casing; an external tank, which is supported in the casing and stores washing water therein; and a cleaning tank, which is vertical in the external tank. The shaft is rotatably supported by the shaft as a center to receive washing materials. The driving unit rotates the washing tank. The air supply means supplies air to the washing tank. The heating means supplies air to the washing tank. To be heated; a water supply unit to supply water into the washing tank; and a control means to control the air supply means, the heating means, and the water supply unit; the control means performs heating to supply warm air to the washing tank Treatment, and during this heating treatment, water is supplied into the washing tank by the water supply unit, and a cooling process for cooling the washings is performed.

According to the present invention, when a laundry such as a heat-resistant blanket is heated, the temperature of the laundry can be prevented from rising excessively, and the dust mite can be efficiently killed while protecting the laundry from overheating.

Hereinafter, a washing and drying machine according to an embodiment of the present invention will be described using drawings. In addition, the following embodiment is an example which embodies this invention, and does not limit the character of the technical scope of this invention.

[Example 1]

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, 5, 6, and 7.

FIG. 1 is a longitudinal sectional view showing the structure of a washer-dryer according to the embodiment of the present invention, and FIG. 2 is a functional configuration diagram of the washer-dryer according to the embodiment of the present invention.

In the outer frame 1 of the washer-dryer, the outer tank 2 for storing washing water is supported by four hanging members (not shown) suspended from the upper corners of the outer frame 1 in shockproof form, and is longitudinally arranged outside The central part inside the frame 1. The washing tank 3 arranged in the outer tank 2 is formed into a long bottomed cylindrical shape in the axial direction using a stainless steel plate. A through-hole 7 for water and ventilation is formed in the peripheral wall of the washing tank 3.

At the center of the inner bottom surface portion in the washing tank 3, the rotating wings 6 that stir the laundry to perform a washing operation, a washing operation, a drying operation, and the like are provided to be rotatable. The rotary wing 6 is rotationally driven by the driving device 8 and repeats forward rotation / reverse rotation to perform a washing operation, a washing operation, a drying operation, and the like. During the dehydration operation, the washing tank 3 and the rotary wing 6 are integrally rotated at high speed, and the water contained in the washing product is dehydrated.

The driving device 8 is provided with a drive motor using a reversible rotation type capacitive phase-separated single-phase induction motor, a variable frequency drive motor, an electromagnetically operated clutch mechanism, and a planetary gear reduction mechanism, and has a selective execution of the stirring driving mode and the dehydration driving mode. And the neutral drive mode driving function; the stirring drive mode is to control the drive motor and electromagnetically operated clutch mechanism to make the washing tank 3 in a static state to repeatedly rotate the rotary wing 6 forward and reverse (reciprocating); the dehydration drive mode is to make The washing tank 3 and the rotating wing 6 are integrally rotated in the same direction; this neutral driving mode does not combine the washing tank 3 and the stirring wing 6, and when the stirring wing 6 is rotated, the washing tank 3 is rotated in the reverse direction by its reaction. [0018] On the rear side in the outer frame 1, a circulation duct 18 connected to the outer tank 2 is provided through an exhaust connection 24, and a water-cooled dehumidification plate 20 is provided in an air path of the circulation duct 18, and the water-cooled dehumidification plate The 20 series is used to dry the warm air containing the water evaporated from the washings in the drying process with cooling water for dehumidification, and a thread end filter (such as a thread end included in the warm air for removing circulation) is detachably provided ( (Not shown). As shown by the white hollow arrow, the flow of warm air flows from the outer tank 2 through the exhaust connection 24 and from the lower side of the circulation duct 18 to the upper side; and a blower 19 and a circulation for cooling and dehumidifying are provided in front of it. Warm air heater 17. The air heated by the heater 17 passes warm air to the washing tank 3 through the air duct 26. A mist filter 28 is attached to the supply port of the warm air supplied to the washing tank 3, and the mist filter 28 is formed by weaving a thin metal wire into a substantially hemispherical mesh. However, above the mist filter 28, the mist nozzle 27 protrudes downward in the air duct 26. When the tap water is supplied to the mist nozzle 27, the tap water sprayed downward from the mist nozzle 27 hits the mist filter 28, and the tap water is made fine (atomized) and spread into the washing tank 3. [0019] The mesh of the mist filter 28 is preferably thicker than a water supply filter (not shown) provided inside the water supply pipe connection port 10. This can prevent the mist filter 28 from being clogged with garbage in the tap water. In addition, by disposing the mist filter 28 under the mist nozzle 27, the water sprayed from the mist nozzle 27 is accelerated by gravity acceleration, and it can further promote the miniaturization of the water by colliding with the mist filter 28. . [0020] A warm air temperature sensor 21 that detects the temperature of the heated warm air is provided in the air duct 26, and is used to control the heat of the heater 17. A humidity sensor (not shown) is provided in the air path to sense the humidity of the circulating air. [0021] A circulation temperature sensor 22 is provided in the circulation duct 18 to detect the temperature of the warm air discharged from the washing tank 3 and circulated in the circulation duct 18, and the exhaust connection portion 24 is positioned at the flow path of the cooling water. A drain temperature sensor 23 is provided to detect the temperature of the cooling water including the dew water which is cooled and condensed and recovered. [0022] During the washing operation, the temperature of the washing water or the washing water is detected by the circulation temperature sensor 22 or the drainage temperature sensor 23. It can also be used to change the washing process and washing process according to the detected water temperature. Control content. [0023] The control unit 9 is composed of a microcomputer 37 as a center. [0024] The microcomputer 37 has a function of controlling the display panel 16, the water supply unit 11, and the drain valve 14. In addition, it has the following functions: the motor 32 of the drive device 8 is controlled by the motor drive circuit 31, the clutch mechanism 34 is switched by the clutch drive circuit 33, the ON / OFF of the heater switch 35 is controlled to control the energization of the heater 17, Strong / weak / off, the fan 19 is controlled by the fan driving circuit 36. [0025] FIG. 3 is a basic control flowchart of the dust mite countermeasure course of the embodiment of the present invention executed by the microcomputer 37 in the control unit 9. [0026] When the power switch (not shown) is turned on, the microcomputer 37 executes the following control processing. [0027] Step S01: When the power is turned on, after the initialization process of the control processing system is performed, the clutch mechanism 34 is controlled to the position at the start of washing, and the drain control is performed when the drain valve 14 is not closed. [0028] Step S02: Put the laundry (here, blanket or quilt) into the laundry tank 3, operate the stroke selection key (not shown) of the operation switch 30 for initial setting, and execute the operation control process when the start key switch is pressed . In the initial setting here, the dust mite countermeasure course, which is an embodiment of the present invention, is selected and set. [0029] Step S03: The main water supply solenoid valve (not shown) of the water supply unit 11 is opened to start the supply of tap water. This laundry water supply system feeds water to a set amount of water, but the clutch mechanism 34 is controlled to a dewatering position, and the washing tank 3 and the rotary wing 6 are integrally rotated at a low speed in the same direction, so that the laundry or blanket or quilt is quickly Control of water absorption. [0030] Step S04: In a washer-dryer having a washing tank 3 rotating around a vertical axis as a center, tap water is supplied to a set amount of water, and the lotion is diluted to a better lotion concentration when washing, and Make the laundry, that is, the blanket or quilt, immersed in the laundry liquid. In this state, the drive device 8 is controlled and selected for execution: the clutch mechanism 34 is set to the dehydration drive mode, and the washing tank 3 and the rotary wing 6 rotate as a unit to rotate the laundry; In the state that the washing tank 3 is stationary, the rotary wing 6 is rotated forward / reverse to stir the laundry; or the clutch mechanism 34 is set to a neutral driving mode, and the washing tank 3 is reversely rotated by the reaction of rotating the rotary wing 6 Wing laundry. [0031] The slot rotating laundry is suitable for washing without damaging the blanket or quilt, but the mechanical washing force given to the blanket or quilt is less. [0032] The agitation washing system only provides mechanical cleaning power to the lower part of the blanket or quilt. Therefore, the blanket or quilt is generally put into the washing tank 3 with the blanket or quilt placed in a net bag for washing. [0033] Slotted laundry has the advantages of both slotted rotating laundry and agitated laundry, and can give a moderate mechanical cleaning force without harming the blanket or quilt. [0034] In a washer-dryer having a washing tub 3 rotating around a horizontal axis or an inclined axis, tap water is not supplied to the laundry, that is, a blanket or a quilt, so that the washing tub 3 is rotated forward / reverse. The laundry is performed by tapping the laundry, that is, a blanket or quilt, to the upper part and then dropping it. [0035] Step S05: Open the drain valve 14 to discharge the washing liquid to the outside of the machine. In this washing and draining operation, the clutch mechanism 34 is controlled in the dehydration driving mode during or after the draining. [0036] Step S06: After the drainage is completed, the washing tank 3 and the rotary wing 6 are rotated at a high speed in one direction, and the washing liquid, that is, the washing liquid contained in the blanket or quilt, is centrifuged and dewatered. 00 [0037] Step S07 Close the drain valve 14 and open the main water supply solenoid valve of the water supply unit 11 to feed tap water to a set amount of water. [0038] Step S08: The drive device 8 is controlled to perform the cleaning 1 operation. In some cases, in order to shorten the operation time, the washing 1 operation may be skipped. [0039] Step S09: Open the drain valve 14 to discharge the washing water to the outside of the machine. In this washing 1 drainage operation, the clutch mechanism 34 is controlled in the dehydration driving mode during the drainage. [0040] Step S10: By rotating the washing tank 3 and the rotary wing 6 at a high speed in one direction, the washing water, that is, the washing water contained in the blanket or quilt, is centrifuged and dewatered. [0041] Step S11: The drain valve 14 is closed, and the control section 9 controls the blower 19, the heater 17, and the driving device 8 to perform a heating and humidifying process. [0042] Specifically, as shown in the flowchart of FIG. 5, the drive device 8 is controlled to rotate the washing tank 3 at a low speed (step S501). The control unit 9 controls the fan drive circuit 36 to operate the blower 19 to supply air into the washing tank 3 (step S502). [0043] Then, the control unit 9 controls the heater switch 35 to ON to cause the heater 17 to perform a strong operation (step S503). The warm air temperature sensor 21 provided in the air duct 26 heats the laundry, that is, the blanket or cotton, until the warm air temperature reaches 80 ° C. or higher (step S504). When the warm air temperature sensor 21 detects that the warm air temperature exceeds 80 ° C., the control unit 9 controls the water supply unit 11 to intermittently supply tap water from the mist nozzle 27 (step S505). [0044] The mist feed water solenoid valve (not shown) of the water supply unit 11 can supply 0.2 to 0.5 L of tap water to the mist nozzle 27 per minute. In this embodiment, since it is necessary to prevent washing, that is, a blanket or a quilt, Because the heat deforms the fiber itself and becomes hard and stiff, while maintaining the temperature at which the dust mites are killed, the water supply solenoid valve is turned off between 10 seconds on and 170 seconds off. The ON / OFF time distribution is a control scheme that can be set in cooperation with each washer-dryer to prevent the temperature of the laundry, that is, the blanket or quilt, from becoming too high. [0045] With the circulation temperature sensor 22 provided in the circulation duct 18, the temperature of the warm air circulating in the circulation duct 18 exceeds 50 ° C., while intermittently spraying the mist, while continuing to wash the clothes, that is, the blanket or The quilt is heated and humidified (step S506). [0046] When the circulation temperature sensor 22 detects that the circulation temperature exceeds 50 ° C., the control unit 9 turns off the fog water supply solenoid valve of the water supply unit 11 to stop intermittent spraying of the fog (step S507). Then, the control unit 9 controls the heater switch 35 to cause the heater 17 to perform a weak operation (step S508). At the same time as the weak operation of the heater 17 is started, the weak operation timer is started (step S509), and the weak operation is continued for 30 minutes (step S510). This is to kill the dust mites. It is a blanket or quilt that is kept at a temperature of 50 ° C or higher for 20 minutes. It is also a blanket that is put into the washing tank 3 that rotates around the vertical axis. Or the temperature of the lower part of the quilt is not easy to rise. In a washer-dryer having a washing tank 3 rotating around a horizontal axis or an inclined axis as a center, the laundry, that is, a blanket or a quilt, can rotate and change the position of the washing tank 3, so that weak operation can also be skipped. After 30 minutes of the weak operation timer, the control unit 9 sets the heater switch 35 to OFF to stop heating by the heater 17 (step S511). At the same time as the heating by the heater 17 is stopped, the ventilation operation timer is started (step S512). Fifteen minutes have elapsed since the blower 19 was operated to the blower operation (step S513). After 15 minutes have passed, the control unit 9 controls the fan drive circuit 36 to stop the operation of the blower 19 (step S514). [0047] After the air blowing operation is stopped, the control unit 9 controls the driving device 8 to stop the rotation of the washing tank 3 (step S515). [0048] Step S12: The main water supply solenoid valve of the water supply unit 11 is opened to supply tap water to a set amount of water. [0049] Step S13: The drive device 8 is controlled to perform the cleaning 2 operation. [0050] Step S14: The washing water is discharged to the outside of the machine in the same manner as step S09. [0051] Step S15: In the same manner as step S10, the washing water, that is, the washing water contained in the blanket or quilt, is subjected to centrifugal dehydration. Hereinafter, steps S16, S17, and S18 are performed in the same manner, but these may be omitted as appropriate. [0052] Step S19: The blankets or quilts, which are the items to be washed after the sufficient washing, are fully dehydrated by centrifugation during the final dehydration. [0053] FIG. 4 is different from the heating and humidifying process (step S11) before the washing water supply (step S03), but the basic control system is the same as the flowchart of FIG. 3. [0054] FIG. 6 is a simplified explanatory diagram of the temperature distribution of the blanket, and the effect of the heating and humidifying treatment in this embodiment will be described using this figure. [0055] (a) shows the case where the miniaturized water is not intermittently supplied in the washing tank 3, and (b) shows the case after the heating and humidifying treatment of the present invention is performed. [0056] The interval tA is a strong operation of the heater 17, the interval tB is a weak operation of the heater 17, and the interval tC is a blower operation after the heater 17 is turned off. [0057] A blanket or quilt, which is put into the washing tank 3 that rotates about the vertical axis, rotates around the position where the warm air is supplied, and a temperature change like temperature change T1 is formed. At point A Over 50 ° C. On the other hand, a temperature change such as a temperature change T2 is formed in the lower part of the washing tank 3, and the heating time to the point B exceeding 50 ° C. becomes longer. Therefore, the temperature change T1 is further heated than the point A, and as the moisture contained in the blanket decreases, the temperature rises sharply. At the point C, the maximum temperature is reached, and the fibers of the blanket are thermally deformed. [0058] When the heating and humidifying process of this embodiment is performed, if the warm air temperature exceeds 80 ° C., tap water is intermittently supplied from the mist nozzle 27 (line M). Thereby, the temperature rise from the point A exceeding 50 ° C. on the upper surface near the position where the warm air is supplied is slowed. In the lower part of the washing tank 3, the temperature change T2 exceeds 50 ° C at the point B, and then the temperature rise continues. In the interval tB where the heater 17 is operating weakly, the temperature change T1 is almost horizontal or gradually rises. The heating and humidifying treatment in this embodiment does not exceed 60 ° C. On the other hand, the temperature change T2 continued to increase in temperature during the weak operation interval tB, and further continued to increase slowly in the ventilation operation interval tC, and it can be maintained at 50 ° C or higher for 20 minutes or more. [0059] According to the above embodiment, by properly cooling and humidifying the laundry, the temperature of the laundry can be prevented from rising excessively, and the dust mites can be efficiently killed by maintaining a certain temperature. [0060] Furthermore, by using the mist in the above-mentioned cooling treatment, it is possible to suppress a sharp drop in temperature and perform temperature control more appropriately. [Embodiment 2] [0061] The heating and humidifying treatment in another embodiment replaces the warm-air temperature detected by warm-air temperature sensor 21 during heating as in Example 1, and only replaces when the temperature exceeds 80 ° C. Discontinuous spraying of the mist is started, but the intermittent spraying of the mist is started after heating for a predetermined time. This is the difference. [0062] Specifically, as shown in the flowchart of FIG. 7, the driving device 8 is controlled to rotate the washing tank 3 at a low speed (step S501). The control unit 9 controls the fan drive circuit 36 to operate the blower 19 to supply air into the washing tank 3 (step S502). [0063] Then, the control unit 9 controls the heater switch 35 to be ON, and causes the heater 17 to perform a strong operation (step S503). At the same time as the strong operation of the heater 17 is started, a strong operation timer is started (step S516) to determine the amount of laundry, that is, a blanket or quilt (step S516), and the heating time is set according to the amount of laundry. [0064] A 32-minute timer is started when the laundry is small (step S517), and a 38-minute timer is started when the laundry is long (step S518). The timer starts counting down and continues to heat the laundry, that is, the blanket or quilt, until the timer reaches 0 (step S517). [0065] When the set time progresses, the control unit 9 controls the water supply unit 11 to intermittently supply tap water from the mist nozzle 27 (step S505). [0066] The water supply solenoid valve (not shown) for the mist of the water supply unit 11 can supply 0.2 to 0.5 L of tap water to the mist nozzle 27 per minute. In this embodiment, since it is necessary to prevent washing, that is, blankets or quilts, Because the heat deforms the fiber itself and becomes hard and stiff, while maintaining the temperature at which the dust mites are killed, the water supply solenoid valve is turned off between 10 seconds on and 170 seconds off. The ON / OFF time distribution is a control scheme that can be set in cooperation with each washer-dryer to prevent the temperature of the laundry, that is, the blanket or quilt, from becoming too high. [0067] With the circulation temperature sensor 22 provided in the circulation duct 18, the temperature of the warm air circulating in the circulation duct 18 exceeds 50 ° C., while intermittently spraying the mist, while continuing to wash the clothes, that is, the blanket or The quilt is heated and humidified (step S506). [0068] When the circulation temperature sensor 22 detects that the circulation temperature exceeds 50 ° C., the control unit 9 turns OFF the fog water supply solenoid valve of the water supply unit 11 to stop intermittent spraying of the fog (step S507). Then, the control unit 9 controls the heater switch 35 to cause the heater 17 to perform a weak operation (step S508). At the same time as the weak operation of the heater 17 is started, the weak operation timer is started (step S509), and the weak operation is continued for 30 minutes (step S510). This is to kill the dust mites. It is a blanket or quilt that is kept at a temperature of 50 ° C or higher for 20 minutes. It is also a blanket that is put into the washing tank 3 that rotates around the vertical axis. Or the temperature of the lower part of the quilt is not easy to rise. In a washer-dryer having a washing tank 3 rotating around a horizontal axis or an inclined axis as a center, the laundry, that is, a blanket or a quilt, can rotate and change the position of the washing tank 3, so that weak operation can also be skipped. After 30 minutes of the weak operation timer, the control unit 9 sets the heater switch 35 to OFF to stop heating by the heater 17 (step S511). At the same time as the heating by the heater 17 is stopped, the ventilation operation timer is started (step S512). Fifteen minutes have elapsed since the blower 19 was operated to the blower operation (step S513). After 15 minutes have passed, the control unit 9 controls the fan drive circuit 36 to stop the operation of the blower 19 (step S514). [0069] After the air blowing operation is stopped, the control unit 9 controls the driving device 8 to stop the rotation of the washing tank 3 (step S515). [0070] When the heating and humidifying treatment of this embodiment is performed, the heating time is selected according to the amount of the laundry, that is, the amount of blankets or quilts. When this time is performed, tap water can be intermittently supplied from the mist nozzle 27 to suppress the heating The temperature on the laundry near the location where the warm air is supplied rises. [Embodiment 3] [0071] In another embodiment, the heating and humidifying treatment is performed in the same manner as in Embodiment 1 or Embodiment 2 when the mist nozzle 27 or the mist filter 28 is not provided, and the main feed water of the water supply unit 11 is turned on. The valve is different from the first or second embodiment in that tap water is supplied to cool and humidify the laundry. [0072] The main water supply solenoid valve of the water supply unit 11 can supply 10 to 15 L of tap water per minute, but it is necessary to keep the temperature to kill the dust mites while cooling the laundry, that is, the blanket or quilt, so it is turned on for 2 seconds. After that, intermittent water supply was turned off for 208 seconds. This ON / OFF time allocation is a control case. The tap water pressure is determined by measuring the time required to feed water to a predetermined water level during the washing process or washing process, and it is set from a plurality of time distribution options to prevent washing. The temperature of the object, that is, the blanket or quilt, has risen excessively. [Example 4] [0073] Except for a washer-dryer provided with a washing tank 3 rotating around a horizontal axis or an inclined axis, there is not much difference in structure, and the heating and humidifying treatment performance of the present invention can be performed. Kill the dust mites. [0074] In addition, as in Example 1, for example, in the case where the rotary wing 6 is provided, that is, the vertical washer-dryer, it is difficult to perform agitation and washing, that is, a blanket or a quilt, so that the washing is prone to uneven temperature, so the foregoing Cooling of the laundry during the heating and humidifying process is more effective.

[0075]

1‧‧‧ frame (casing)

2‧‧‧ Outer Slot

3‧‧‧washing trough

6‧‧‧ Rotary Wing

8‧‧‧Driver (Driver)

9‧‧‧ Control Department

17‧‧‧heater (heating means)

19‧‧‧ blower (supply air supply means)

20‧‧‧Water-cooled dehumidification board (water-cooled dehumidification means)

21‧‧‧ warm air temperature sensor

22‧‧‧Cycle temperature sensor

27‧‧‧Fog nozzle (fog spreading means)

28‧‧‧Mist filter (miniaturized component, means of mist distribution)

Fig. 1 is a longitudinal sectional view showing the structure of a washer-dryer according to an embodiment of the present invention.

Fig. 2 is a functional configuration diagram of a washer-dryer according to the embodiment of the present invention.

FIG. 3 is a basic control flowchart of a dust mite countermeasure stroke according to the embodiment of the present invention.

FIG. 4 is a basic control flowchart of a dust mite countermeasure course according to another embodiment of the present invention.

Fig. 5 is a control flow of the heating and humidifying process according to the embodiment of the present invention Illustration.

FIG. 6 is a blanket temperature distribution of the embodiment of the present invention.

Fig. 7 is a control flowchart of a heating and humidifying process according to another embodiment of the present invention.

Claims (8)

A washer-dryer is characterized by comprising: a casing; an outer tank supported by the aforementioned casing and storing washing water therein; a washing tank secured within the outer tank and rotatably supported around a vertical axis. The washing unit is driven; the driving unit rotates the washing tank; the air supply means supplies air into the washing tank; the heating means heats the air supplied into the washing tank; the water supply unit Water is supplied into the washing tank; and the control means controls the air supply means, the heating means, and the water supply unit; the control means performs a heating process for supplying warm air into the washing tank, and during the heating process The water supply unit supplies water into the washing tank to perform a cooling process for cooling the washing object. For example, the washer-dryer of claim 1 further includes a mist spraying means for miniaturizing the water from the water supply unit, and spraying the refined water into the washing tank during the heat treatment. The control means supplies the miniaturized water into the washing tank by the mist spraying means, and performs a cooling process for cooling the washing object. For example, the washer-dryer of claim 1, further comprising a temperature sensor, which detects the temperature of the circulating warm air. During the heating process, the temperature detected by the temperature sensor When the temperature reaches a predetermined temperature or higher, the control means performs the cooling process. The washer-dryer according to claim 1, wherein the washer-dryer is a vertical washer-dryer having a rotary wing provided at the bottom of the washing tank. For example, the laundry dryer in claim 1, wherein after the washing process and the washing process are performed, the aforementioned heating treatment is performed before the water supply of the second washing process is started, and after the heating process, the second washing process is performed, Dehydration works. For example, the laundry dryer of claim 1, wherein the aforementioned heating treatment is performed before the water supply of the laundry project is started, and the laundry process, the washing process, and the dehydration process are performed after the heating and humidifying process. In the laundry washer and dryer of claim 3, wherein the heating treatment is to stop the heating means to stop the supply to the washing tank when the circulation temperature detected by the temperature sensor reaches a predetermined temperature or more. The heating of the air is completed after the air is blown into the washing tank only for a predetermined time. The washing and drying machine according to claim 1, wherein the heating means is composed of a heater capable of strong operation and weak operation, and the heating treatment is performed when the circulation temperature detected by the temperature sensor reaches a predetermined temperature or more At this time, the heating means is switched from a strong operation to a weak operation. After the operation is performed only for a predetermined time, the heating means is stopped to stop the heating of the air supplied to the washing tank, and the air is further blown to the cleaning means only for a predetermined time. End in the tank.