WO2016140109A1

WO2016140109A1 - Washing/drying machine

Info

Publication number: WO2016140109A1
Application number: PCT/JP2016/055289
Authority: WO
Inventors: 小西　朗登; 武士澤田
Original assignee: シャープ株式会社
Priority date: 2015-03-04
Filing date: 2016-02-23
Publication date: 2016-09-09

Abstract

A washing/drying machine, provided with a control device (60). This control device (60) has: a water tank interior environment determining unit (61) for determining whether or not environment information for the interior of a water tank (2) satisfies a predetermined condition after a predetermined drying time has elapsed since the start of a drying operation; and a drying operation assist unit (62) for energizing a heater (9), further heating air heated by a condenser (704) of a heat pump unit (7), and feeding the air into a rotating tank (3), until the environment information for the interior of the water tank (2) satisfies the predetermined condition, if it is determined by the water tank interior environment determining unit (61) that the environment information for the interior of the water tank (2) does not satisfy the predetermined condition.

Description

Washing and drying machine

This invention relates to a washing and drying machine.

Conventionally, as a washing and drying machine, there is a drum type washing and drying machine disclosed in Japanese Patent Application Laid-Open No. 2007-143735 (Patent Document 1). In the drum type washing and drying machine, during the drying operation, the air that has flowed out of the water tank from the inside of the drum is heated by the heat pump unit and returned into the drum. Moreover, the ventilation fan unit is arrange | positioned in the downstream of the said heat pump unit, This ventilation fan unit sends the air heated with the heat pump unit toward the inside of a drum.

Further, a heater for heating the air from the blower fan unit is disposed on the downstream side of the blower fan unit. This heater is energized for a predetermined time in the initial stage of the drying operation in order to promote the temperature rise of the warm air.

JP 2007-143735 A

However, in the conventional drum-type washing and drying machine, moisture does not remain in the laundry even in the later stage of the drying operation because the drying operation suitable for the material and amount of the laundry is not performed. There is.

That is, the conventional drum-type washing and drying machine has a problem that the drying finish of the laundry may be deteriorated because the drying operation is completed without sufficiently drying the laundry.

Therefore, an object of the present invention is to provide a washing / drying machine that can sufficiently remove moisture from the laundry and can reduce the possibility of the drying finish of the laundry becoming worse.

In order to solve the above problems, the washing and drying machine of the present invention is:
An outer box,
A water tank disposed in the outer box;
An aquarium environmental information detection unit for detecting environmental information in the aquarium,
A rotating tub that is rotatably arranged in the water tub, and stores the laundry;
A driving device for rotationally driving the rotating tank;
An air circulation path for circulating air returned from the water tank to the outside of the water tank;
A heat pump unit provided in the air circulation path and having an evaporator, a compressor, a condenser and an expansion mechanism;
A blower fan unit for sending the air heated by the condenser of the heat pump unit to the rotating tank side;
A heater for further heating the air heated by the condenser of the heat pump unit;
A control device,
The control device
After a predetermined drying time has elapsed since the start of the drying operation, an environmental determination unit in the water tank that determines whether the environmental information in the water tank satisfies a predetermined condition;
When the environmental information in the aquarium determines that the environmental information in the aquarium does not satisfy the predetermined condition, the energization of the heater is performed until the environmental information in the aquarium satisfies the predetermined condition. And a drying operation assist unit that further heats the air heated by the condenser of the heat pump unit and sends the air into the rotary tank.

Here, the environmental information in the water tank means at least one of temperature, humidity and the like in the water tank.

In the washing and drying machine of one embodiment,
The aquarium environmental information detection unit is a water tank temperature sensor for detecting the temperature in the water tank,
The water tank environment determination unit is a water tank temperature determination unit that determines whether or not the temperature in the water tank is equal to or higher than a predetermined temperature after the predetermined drying time has elapsed since the start of the drying operation. Yes,
When the temperature in the water tank is determined not to be equal to or higher than the predetermined temperature by the temperature determining part in the water tank, the drying operation assist unit is configured to increase the heater until the temperature in the water tank becomes equal to or higher than the predetermined temperature. The air heated by the condenser of the heat pump unit is further heated and sent into the rotary tank.

In the washing and drying machine of one embodiment,
The aquarium environmental information detection unit is a humidity sensor in the aquarium for detecting the humidity in the aquarium,
The water tank environment determination unit is a water tank humidity determination unit that determines whether the humidity in the water tank is equal to or lower than a predetermined humidity after the predetermined drying time has elapsed since the start of the drying operation. Yes,
If the humidity in the water tank determines that the humidity in the water tank is not less than or equal to the predetermined humidity, the drying operation assisting unit is configured until the humidity in the water tank becomes equal to or lower than the predetermined humidity. The air heated by the condenser of the heat pump unit is further heated and sent into the rotary tank.

In the washing and drying machine of one embodiment,
The aquarium environmental information detection unit comprises a water tank temperature sensor for detecting the temperature in the water tank, and a water tank humidity sensor for detecting the humidity in the water tank,
After the predetermined drying time has elapsed since the start of the drying operation, the in-water tank environment determination unit is configured such that the temperature in the water tank is equal to or higher than the predetermined temperature, and the humidity in the water tank is equal to or lower than the predetermined humidity. Determine if there is,
When the temperature in the water tank is determined to be not less than the predetermined temperature and the humidity in the water tank is not equal to or less than the predetermined humidity, the drying operation assisting unit is in the water tank. The heater is energized until the temperature of the water tank is equal to or higher than the predetermined temperature and the humidity in the water tank is equal to or lower than the predetermined humidity, and the air heated by the condenser of the heat pump unit is further heated to Send to the rotating tank.

One embodiment of the washing and drying machine,
An evaporator temperature sensor for detecting the temperature of the evaporator;
The control device
Using the evaporator temperature sensor, a frost determination unit that determines whether or not frost is attached to the evaporator; and
When the frosting determination unit determines that frost is attached to the evaporator, the compressor is stopped, the heater is energized, and the air heated by the heater is supplied to the evaporator. And a defrosting operation section for sending.

In the washing and drying machine of one embodiment,
The evaporator temperature sensor has a first refrigerant temperature sensor for detecting the temperature of the refrigerant entering the evaporator, and a second refrigerant temperature sensor for detecting the temperature of the refrigerant that has exited the evaporator. ,
When the temperature of the refrigerant entering the evaporator and the temperature of the refrigerant exiting the evaporator are both less than 0 ° C., the frost determination unit determines that frost is attached to the evaporator.

In the washing and drying machine of one embodiment,
A weight sensor for detecting the weight of the laundry contained in the rotating tub;
The predetermined humidity is determined based on the weight of the laundry detected by the weight sensor.

One embodiment of the washing and drying machine,
Provided with a temperature sensor around the outer box for detecting the temperature around the outer box,
The controller energizes the heater between the start of the drying operation and the elapse of the predetermined drying time, and stops energization of the heater based on the temperature around the outer box. Control.

In the washing and drying machine of one embodiment,
The controller energizes the heater between the start of the drying operation and the elapse of the predetermined drying time, and controls the stop of energization of the heater based on the course of the drying operation. To do.

In the washing and drying machine of one embodiment,
The blower fan unit is disposed on the downstream side of the heater.

The laundry dryer of the present invention can prevent the drying operation from being finished in a state where moisture has not been sufficiently removed from the laundry by the above-mentioned aquarium environment determination unit and the drying operation assist unit. The possibility of a poor finish can be reduced.

Further, since the air heated by the condenser of the heat pump unit is further heated and sent into the rotating tub, the state where moisture is not sufficiently removed from the laundry can be eliminated in a short time.

1 is a schematic perspective view of a drum type washing / drying machine according to a first embodiment of the present invention. It is a schematic diagram for demonstrating schematic structure of the drying function of the said drum-type washing dryer. It is a schematic perspective view of the heat pump unit of the first embodiment. It is a longitudinal cross-sectional view of the said heat pump unit. It is a cross-sectional view of the heat pump unit. It is a perspective view of the PTC heater of the said 1st Embodiment. It is a disassembled perspective view of the said PTC heater. It is another perspective view of the PTC heater. It is a control block diagram of the drum type washing and drying machine. It is a schematic diagram for demonstrating the circulation of the air of the said drum type washing-drying machine. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing-drying machine of 2nd Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing / drying machine of 3rd Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing-drying machine of 2nd Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a flowchart following FIG. 17A. It is a control block diagram of the drum-type washing and drying machine of 5th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing / drying machine of 6th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum-type washing and drying machine of 7th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing / drying machine of 8th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing / drying machine of 9th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washer / dryer according to the tenth embodiment of the present invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a control block diagram of the drum type washing / drying machine of 11th Embodiment of this invention. It is a flowchart for demonstrating the control at the time of the drying operation of the said drum-type washing dryer. It is a flowchart following FIG. 31A.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

[First Embodiment]
FIG. 1 is a schematic perspective view of a drum-type washing / drying machine according to a first embodiment of the present invention when viewed from an obliquely upper front side.

The drum type washing and drying machine includes an outer box 1 that forms an outer shell. The outer box 1 includes an upper panel 101, an operation display unit 102, a front panel 103, a rear panel 104, a pair of side panels 105 (only one of the pair of side panels 105 is illustrated), a bottom It is comprised with the stand 106. FIG.

The front panel 103 is provided with an opening 107 through which the laundry 5 passes. Further, the door 21 is rotatably attached to the front panel 103, and the opening 107 is opened and closed by the door 21.

The operation display unit 102 is attached to the front panel 103 so as to be positioned on the opening 107. That is, the operation display unit 102 is located at the upper front side of the outer box 1.

Also, a side of the operation display unit 102 is provided with a laundry case 50 that can accommodate detergent, bleach and softener.

FIG. 2 schematically shows a schematic configuration of the drying function of the drum type washing and drying machine.

The drum-type washing and drying machine includes a water tub 2 disposed in the outer box 1, a drum 3 that is rotatably disposed in the water tub 2, and stores laundry 5, and a motor that rotationally drives the drum 3. 4 and a control device 60 for controlling the motor 4 and the like. The rotation axis J of the drum 3 is inclined with respect to the horizontal direction so that the front side is higher than the rear side. Moreover, the water tank 2 and the drum 3 are each opened toward the door 21 side. By opening the door 21, the laundry 5 can be put into the drum 3 or the laundry 5 can be taken out from the drum 3. Is possible. Further, by closing the door 21, the gas and liquid in the water tank 2 are prevented from leaking into the outer case 1 through the opening 107 of the front panel 103. That is, it is possible to keep the water tank 2 airtight and airtight by closing the door 21. The rotation axis J may be substantially parallel to the horizontal direction. The drum 3 is an example of a rotating tank. The motor 4 is an example of a driving device.

Above the water tank 2, an upper panel 101 that forms the upper part of the outer box 1 is disposed. A front panel 103 that forms most of the front portion of the outer case 1 is disposed in front of the water tank 2.

The peripheral wall portion 31 of the drum 3 has a plurality of through holes (not shown) for allowing liquid and gas to flow between the space between the water tank 2 and the drum 3 and the space in the drum 3. ) Is formed. In addition, a plurality of air introduction holes (not shown) communicating with the intake port 25 of the water tank 2 are formed in the bottom portion 32 of the drum 3.

Further, the drum type washing and drying machine includes an air circulation path 20 for circulating the air in the drum 3. The air circulation path 20 has a first air circulation duct 23, a second air circulation duct 24, and a third air circulation duct 26, and the air that has flowed out of the water tank 2 from inside the drum 3 during the drying operation is inside the drum 3. Guide the air to return to.

The first air circulation duct 23 has one end connected to the exhaust port 22 of the water tank 2 and the other end connected to the intake port 41 of the filter device storage unit 40. This filter device storage part 40 is arrange | positioned in the rear part of the upper side space in the outer case 1, and accommodates the filter apparatus 30 so that attachment or detachment is possible.

The second air circulation duct 24 has one end connected to the exhaust port 42 of the filter device housing 40 and the other end connected to the intake port 711 of the heat pump unit 7. The inside of the heat pump unit 7 communicates with the inside of the blower fan unit 8. Further, the heat pump unit 7 is fixed to the bottom base 106 so as to be located at the rear part of the lower space in the outer box 1, and generates dry high-temperature air.

The third air circulation duct 26 has one end connected to the air outlet 812 of the blower fan unit 8 and the other end connected to the air inlet 25 of the water tank 2. The blower fan unit 8 is disposed on the downstream side of the heat pump unit 7.

Further, the air in the drum 3 is circulated through the air circulation path 20 by driving the blower fan unit 8. At this time, the blower fan unit 8 sends the dry high-temperature air from the heat pump unit 7 to the third air circulation duct 26. As a result, the dried heated air is introduced into the drum 3 from the air inlet 25 through the air introduction hole in the bottom 32 of the drum 3 as indicated by an arrow Y.

Further, the high temperature air takes moisture from the laundry 5 accommodated in the drum 3 and becomes wet low temperature air. As indicated by an arrow Z, this low-temperature air passes through the through hole of the peripheral wall 31 of the drum 3 into the space between the drum 3 and the water tank 2 and then passes through the exhaust port 22 of the water tank 2 to the first air circulation duct. 23, sequentially flows through the filter device housing 40 and the second air circulation duct 24 and is introduced into the heat pump unit 7. At this time, the filter device 30 captures lint and the like contained in the low-temperature air. That is, lint and the like are separated from the low temperature air and remain in the filter device 30.

FIG. 3 is a perspective view when the heat pump unit 7 is viewed obliquely from above. FIG. 4 is a cross-sectional view of the heat pump unit 7 taken along a vertical plane.

The heat pump unit 7 includes a casing 701, an evaporator 702, a compressor 703, a condenser 704, and an expansion mechanism 705, as shown in FIGS. The evaporator 702, the compressor 703 (shown in FIG. 5), the condenser 704, and the expansion mechanism 705 (shown in FIG. 5) are connected in a ring to form a refrigerant circuit. That is, the refrigerant compressed by the compressor 703 flows through the condenser 704, the expansion mechanism 705, and the evaporator 702 in this order. As the expansion mechanism 705, for example, an expansion valve, a capillary tube, or the like is used.

The casing 701 is made of, for example, a heat resistant resin. The casing 701 accommodates the evaporator 702, the compressor 703, the condenser 704, and the expansion mechanism 705 so that the evaporator 702 is located on the upstream side of the condenser 704. Further, an intake port 711 is provided in the upstream portion of the casing 701. On the other hand, an exhaust port 712 is provided in the downstream portion of the casing 701.

The evaporator 702 passes through the plurality of thin plate-shaped heat transfer fins 721 arranged at predetermined intervals in the direction perpendicular to the paper surface of FIG. 4, and the expansion mechanism 705. And a heat transfer tube 722 through which the refrigerant flows. The air that has flowed into the casing 701 from the air inlet 711 passes between the heat transfer fins 721 and flows to the condenser 704. At this time, the air exchanges heat with the heat transfer fins 721 and the heat transfer tubes 722 so that the temperature decreases. Here, the heat transfer fins 721 and the heat transfer tubes 722 may be formed of metal (for example, aluminum).

The condenser 704 passes through the plurality of thin plate-shaped

heat transfer fins

741 and 742 arranged at predetermined intervals in a direction perpendicular to the paper surface of FIG. 4 and the plurality of

heat transfer fins

741 and 742. And

heat transfer tubes

743 and 744 through which the refrigerant from the compressor 703 flows. The heat transfer fins 741 are arranged between the heat transfer fins 721 and the heat transfer fins 742 and have a width smaller than the width of the heat transfer fins 721 and larger than the width of the heat transfer fins 742. The air from the evaporator 702 exchanges heat with the heat transfer fins 741 and the heat transfer tubes 743 between the heat transfer fins 741, and then between the heat transfer fins 742 and the heat transfer fins 742 and the heat transfer tubes 744. Heat is exchanged to increase the temperature. Here, the

heat transfer fins

741 and 742 and the

heat transfer tubes

743 and 744 may be formed of metal (for example, aluminum).

Thus, while the evaporator 702 is provided with one row of heat transfer fins 721, the condenser 704 is provided with two rows of

heat transfer fins

741 and 742.

The blower fan unit 8 includes a casing 801, a centrifugal fan 802 disposed in the casing 801, and a motor 803 that rotationally drives the centrifugal fan 802. An intake port 115 is provided on the upstream side of the casing 801, and an exhaust port 712 of the casing 701 of the heat pump unit 7 is connected to the intake port 115. On the other hand, an air outlet 812 is provided on the downstream side of the casing 801. Air blown out from the outlet 812 is guided to the water tank 2 by the third air circulation duct 26.

Also, a PTC (Positive Temperature Coefficient) heater 9 as an example of a heater is disposed between the condenser 704 and the blower fan unit 8 of the heat pump unit 7. The PTC heater 9 heats the air that is heated by the condenser 704 and flows toward the blower fan unit 8.

FIG. 5 is a cross-sectional view of the heat pump unit 7 cut along a horizontal plane.

The compressor 703 is disposed in the vicinity of the PTC heater 9. A partition 714 made of, for example, a heat resistant resin is provided between the compressor 703 and the PTC heater 9. This prevents the air flowing from the condenser 704 to the blower fan unit 8 from flowing into the space where the compressor 703 is disposed.

FIG. 6 is a perspective view of the PTC heater 9 as viewed from an obliquely upper side on the upstream side. FIG. 7 is an exploded perspective view of the PTC heater 9.

As shown in FIGS. 6 and 7, the PTC heater 9 is provided with a plurality of plate-shaped heat generating portions 901 arranged in a vertical direction at a predetermined interval and on both sides of the heat generating portions 901. A plurality of thin plate-shaped heat transfer fins 902 are provided. An opening 713 is provided in the upper part of the casing 701 of the heat pump unit 7, and the PTC heater 9 is inserted into the opening 713 (shown in FIG. 4) and is screwed (not shown) in the casing 701 of the heat pump unit 7. Fixed to the top.

The heat generating portion 901 includes a ceramic (for example, barium titanate), and when the temperature is low, it is easy for electricity to flow, whereas when the temperature is high, the electricity is difficult to flow. Further, the heat generating portion 901 is sandwiched and in contact with the heat transfer fin 902 adjacent to itself.

The heat transfer fins 902 are made of a metal (for example, aluminum) and play a role of transferring heat of the heat generating portion to the air passing between the heat transfer fins 902.

The PTC heater 9 includes a frame portion 903, a terminal cover portion 904 formed integrally with the frame portion 903, and a seal member mounting portion 906 formed separately from the frame portion 903 and the terminal cover portion 904. And. The frame part 903 is an example of a holding part.

The frame portion 903 is formed of, for example, a polyethylene terephthalate resin containing glass fiber at a ratio of 10%, and holds the heat generating portion 901 and the heat transfer fins 902. The frame portion 903 is open toward the upstream side and the downstream side, and air from the condenser 704 easily flows between the heat transfer fins 902. In addition, a claw portion 907 that is engaged with an upstream end of the heat transfer fin 902 is provided at a substantially central portion in the vertical direction on each side portion of the frame portion 903. Each side portion of the frame portion 903 is also provided with a stopper portion 908 facing the upstream end of the heat transfer fin 902 below the claw portion 907. The polyethylene terephthalate resin is an example of a flame retardant material.

The terminal cover portion 904 has a shape that covers the terminal 909 electrically connected to the heat generating portion 901. The terminal cover portion 904 and the terminal 909 do not enter the casing 701 of the heat pump unit 7 but are disposed on the casing 701.

The lower part of the seal member mounting portion 906 is formed in an annular shape. By inserting the frame portion 903 into the space surrounded by the lower portion, the seal member mounting portion 906 is assembled to the frame portion 903 and the terminal cover portion 904. An annular groove 910 is provided on the lower surface of the lower part, and an annular seal member (not shown) is fitted into the annular groove 910. This seal member is in close contact with the peripheral edge of the opening 713 at the top of the casing 701 of the heat pump unit 7 over the entire circumference. Thereby, the sealing performance between the seal member mounting portion 906 and the peripheral portion of the opening 713 can be enhanced.

FIG. 8 is a perspective view of the PTC heater 9 as viewed from obliquely above on the downstream side.

The PTC heater 9 includes a bar-shaped covering portion 911 positioned on the downstream side of each heat generating portion 901. The covering portion 911 covers each heat generating portion 901 without substantially covering each heat transfer fin 902. Here, the covering portion 911 does not substantially cover each heat transfer fin 902 means that the state in which the covering portion 911 does not cover the heat transfer fins 902 at all also includes the air passing between the heat transfer fins 902. If it is a grade which does not inhibit flow greatly, the state where covering part 911 covers a part of each heat-transfer fin 902 is also pointed out. The covering portion 911 is an example of a covering structure. Moreover, you may form the coating | coated part 911 with the said polyethylene terephthalate resin, for example.

In addition, a stopper portion 912 that faces the downstream end of the heat transfer fin 902 is provided below each side portion of the frame portion 903.

FIG. 9 is a control block diagram of the drum type washing and drying machine.

The control device 60 comprises a microcomputer or the like, and receives signals from the first and second

refrigerant temperature sensors

16A and 16B, the first and second

air temperature sensors

17A and 17B, the operation unit 121 of the operation display unit 102, and the like. Based on this, the motor 4, the heat pump unit 7, the blower fan unit 8, the PTC heater 9, the first and second

water supply valves

71A and 71B, the drain valve 72, the display unit 122 of the operation display unit 102, and the like are controlled. The first and second

refrigerant temperature sensors

16A and 16B are examples of an evaporator temperature sensor. The first air temperature sensor 17 </ b> A is an example of an in-water environment information detection unit for detecting environmental information in the aquarium 2, and is an example of an in-water temperature sensor. The first and second

air temperature sensors

17A and 17B are examples of the outer box ambient temperature sensor.

The first refrigerant temperature sensor 16A is attached to a refrigerant pipe connecting the expansion mechanism 705 and the evaporator 702, and outputs a signal indicating the temperature of the refrigerant flowing from the expansion mechanism 705 to the evaporator 702 to the control device 60. On the other hand, the second refrigerant temperature sensor 16B is attached to a refrigerant pipe connecting the evaporator 702 and the compressor 703, and sends a signal indicating the temperature of the refrigerant flowing out of the evaporator 702 toward the compressor 703 to the control device 60. Output.

The first air temperature sensor 17A is attached to the end of the first air circulation duct 23 on the filter device housing 40 side, and a signal indicating the temperature of the air entering the filter device housing 40 during the drying operation is supplied to the control device 60. Output to. On the other hand, the second air temperature sensor 17B is attached to the end of the second air circulation duct 24 on the filter device housing part 40 side, and controls a signal indicating the temperature of the air emitted from the filter device housing part 40 during the drying operation. Output to the device 60.

The first and second

water supply valves

71A and 71B are provided in first and second water supply paths (not shown) for supplying tap water into the water tank 2, for example. When the first water supply valve 71 is opened, tap water is supplied to an area where the detergent or bleach is present in the laundry case 50, and the detergent or bleach flows into the water tank 2 together with the tap water. On the other hand, when the second water supply valve 71B is opened, tap water is supplied to an area where the softener is present in the laundry case 50, and the softener flows into the water tank 2 together with the tap water. Note that bath water may be supplied into the aquarium 2 by opening the first and second

water supply valves

71A and 71B.

The drain valve 72 is disposed below the water tank 2. More specifically, the water in the water tank 2 is guided out of the outer box 1 by a drainage path (not shown). A drain valve 72 is provided in this drain path. When the drain valve 72 is opened, the water in the water tank 2 flows out of the outer box 1 through the drain path.

In addition, during the drying operation, the control device 60 sends air heated by the condenser 704 of the heat pump unit 7 into the drum 3 for a predetermined time, and then whether or not the temperature in the water tank 2 is equal to or higher than the predetermined temperature. When the water tank temperature determination unit 61 and the water tank temperature determination unit 61 determine that the temperature in the water tank is not equal to or higher than the predetermined temperature, the temperature in the water tank 2 is equal to or higher than the predetermined temperature. The PTC heater 9 is energized, and the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent to the drum 3 for drying operation assisting section 62. Each of the aquarium temperature determination unit 61 and the drying operation assist unit 62 is configured by software. The said water tank internal temperature determination part 61 is an example of the water tank internal environment determination part.

According to the drum type washing and drying machine having the above-described configuration, the air blowing fan unit 8 is activated during the drying operation, and the air in the drum 3 comes out of the drum 3 as shown in FIG. Then, the heat pump unit 7 and the blower fan unit 8 are sequentially circulated so as to return to the drum 3. At this time, since the PTC heater 9 is disposed on the downstream side in the casing 701 of the heat pump unit 7, the air heated by the condenser 704 can be further heated by the PTC heater 9. Accordingly, air having a sufficiently high temperature can be flowed into the drum 3, so that the drying performance of the laundry 5 can be improved.

Further, even if the water tank 2 vibrates vigorously due to the rotation of the drum 3, the vibration of the water tank 2 decreases while being transmitted to the third air circulation duct 26 and the blower fan unit 8. Therefore, since the possibility that the PTC heater 9 will break down due to vibration can be reduced, the reliability of the PTC heater 9 can be increased.

Hereinafter, the control performed by the control device 60 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control is started, first, in step S101, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S102, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S103, it is determined whether or not a predetermined energization time has elapsed since the start of energization of the PTC heater 9. This step S103 is repeated until it is determined that a predetermined energization time has elapsed since the start of energization of the PTC heater 9.

Next, energization of the PTC heater 9 is stopped in step S104. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S105, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S101). This step S105 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S106, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S106 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S107. On the other hand, when it is determined in step S106 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S111 to S113 are sequentially performed, and then the process proceeds to the next step S107.

In step S111, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S112, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S112 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S112, the same determination as in step S106 is performed.

In step S113, energization of the PTC heater 9 is stopped, and heating of air in the PTC heater 9 is stopped.

Finally, in step S107, the compressor 703 and the blower fan unit 8 are stopped.

Thus, even if the above steps S101 to S105 are performed and hot air is supplied into the drum 3 for a predetermined drying time, the laundry 5 may not be sufficiently dried. In this case, the temperature in the water tank 2 does not exceed a predetermined temperature. Therefore, when it is determined in step S106 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, the PTC heater 9 is energized until the temperature in the water tank 2 becomes equal to or higher than the predetermined temperature in steps S111 to S113. The air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is continuously supplied into the drum 3. As a result, it is possible to prevent the drying operation from being finished in a state where moisture is not sufficiently removed from the laundry 5. Therefore, the possibility that the drying finish of the laundry 5 is deteriorated can be reduced.

In step S111, the PTC heater 9 is energized to supply the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 into the drum 3, so that moisture is sufficiently removed from the laundry 5. The state that is not can be eliminated in a short time.

In the first embodiment, the PTC heater 9 is used as an example of the heater. However, for example, an infrared heater such as a halogen heater or a sheathed heater may be used.

In the first embodiment, the PTC heater 9 is attached to the casing 701. However, for example, the blower fan unit 8 may be connected to the heat pump unit 7 via a duct and attached to the duct. Even if it does in this way, the air which goes to the ventilation fan unit 8 from the heat pump unit 7 can be heated with the PTC heater 9, and the vibration of the PTC heater 9 can also be reduced.

In the first embodiment, the PTC heater 9 is disposed on the upstream side of the blower fan unit 8, but the PTC heater 9 may be disposed on the downstream side of the blower fan unit 8.

In the first embodiment, the blower fan unit 8 is disposed on the downstream side of the PTC heater 9. However, the blower fan unit 8 may be disposed on the upstream side of the heat pump unit 7.

In the first embodiment, the third air circulation duct 26 may be a duct having flexibility, or may be configured by a rigid duct and a flexible duct having a bellows structure. Good.

In the first embodiment, the water tank temperature determination unit 61 and the drying operation assist unit 62 are each configured by software, but may be configured by hardware.

[Second Embodiment]
FIG. 12 is a control block diagram of the drum type washer / dryer according to the second embodiment of the present invention. In FIG. 12, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment. Also in the following description, the same reference numerals as those of the first embodiment are assigned to the same components as those of the first embodiment.

The drum type washing and drying machine includes a control device 2060 that performs control different from the control device 60 of the first embodiment. That is, the controller 2060 energizes the PTC heater 9 from the start of the drying operation until a predetermined drying time elapses, and stops energization of the PTC heater 9 based on the temperature around the outer box. To control.

Hereinafter, the control performed by the control device 2060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control starts, first, in step S201, the temperature around the outer box is obtained and stored based on the signals from the first and second

air temperature sensors

17A and 17B. As a method for obtaining the temperature around the outer box, for example, there is a method using a table indicating the relationship between the signals from the first and second

air temperature sensors

17A and 17B and the temperature around the outer box.

Next, in step S202, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S203, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S204, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 1 below is satisfied. This step S204 is repeated until it is determined that the energization stop condition of the PTC heater 9 in Table 1 below is satisfied.

More specifically, whether or not the condition for stopping energization of the PTC heater 9 in Table 1 is satisfied depends on the temperature around the outer box stored in step S201.

For example, if the outer box ambient temperature stored in step S201 is less than 15 ° C., the energization time of the PTC heater 9 becomes 50 minutes, or the temperature in the water tank 2 reaches 35 ° C. It is determined that the condition for stopping energization of the PTC heater 9 is established.

Moreover, when the outer box surrounding temperature memorize | stored by said step S201 is 15 degreeC or more and less than 25 degreeC, if the energization time of the PTC heater 9 will be 30 minutes, or the temperature in the water tank 2 will be 45 degreeC It is determined that the condition for stopping energization of the PTC heater 9 in Table 1 is satisfied.

Further, when the outer box ambient temperature stored in step S201 is 25 ° C., if the energizing time of the PTC heater 9 is 10 minutes or the temperature in the water tank 2 is 55 ° C., the above Table 1 It is determined that the condition for stopping energization of the PTC heater 9 is established.

Next, energization of the PTC heater 9 is stopped in step S205. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S206, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S202). This step S206 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S207, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S207 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S208. On the other hand, if it is determined in step S207 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S211 to S213 are sequentially performed, and then the process proceeds to the next step S208.

In step S211, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S212, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S212 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S212, the same determination as in step S207 is performed.

In step S213, the energization of the PTC heater 9 is stopped and the heating of the air in the PTC heater 9 is stopped.

Finally, in step S207, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S202, the temperature of the air heated by the condenser 704 of the heat pump unit 7 can be further increased and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

Further, the energization of the PTC heater 9 is stopped if the conditions for stopping energization of the PTC heater 9 in Table 1 are satisfied, so that the heating of the PTC heater 9 is not performed more than necessary, and waste of power consumption is saved. Can do.

In the second embodiment, if one of the set energizing time of the PTC heater 9 and the set temperature in the water tank 2 is satisfied during the period from the start of the drying operation until the predetermined drying time elapses, the PTC Although the energization of the heater 9 has been stopped, the energization of the PTC heater 9 may not be stopped unless both the set energization time of the PTC heater 9 and the set temperature in the water tank 2 are satisfied.

[Third Embodiment]
FIG. 14 is a control block diagram of a drum type washing / drying machine according to a third embodiment of the present invention. In FIG. 14, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment. Also in the following description, the same reference numerals as those of the first embodiment are assigned to the same components as those of the first embodiment.

The drum type washing and drying machine includes a control device 3060 that performs control different from the control device 60 of the first embodiment. That is, the control device 3060 energizes the PTC heater 9 from the start of the drying operation until the predetermined drying time elapses, and stops the energization of the PTC heater 9 based on the course of the drying operation. Control.

Hereinafter, the control performed by the control device 3060 for drying the laundry 5 will be described using the flowchart of FIG.

When the above control starts, first, in step S301, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S302, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S303, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 2 below is satisfied. This step S303 is repeated until it is determined that the energization stop condition of the PTC heater 9 in Table 2 below is satisfied.

More specifically, whether or not the condition for stopping energization of the PTC heater 9 in Table 2 above is satisfied depends on the course of the drying operation started in step S301.

For example, when the user operates the operation unit 121 of the operation display unit 102 and selects “standard” as the course of the drying operation, the energization time of the PTC heater 9 becomes 30 minutes, or in the water tank 2 When the temperature reaches 45 ° C., it is determined that the energization stop condition of the PTC heater 9 in Table 2 is satisfied. Here, the “standard” is a course selected by the user when the user wants to process the laundry 5 at a normal speed.

Further, when the user operates the operation unit 121 of the operation display unit 102 and selects “speed” as the course of the drying operation, the energization time of the PTC heater 9 becomes 55 minutes or the inside of the water tank 2 If the temperature reaches 60 ° C., it is determined that the energization stop condition of the PTC heater 9 in Table 2 is satisfied. Here, the “speed” is a course selected by the user when it is desired to process the laundry 5 at a speed higher than the normal speed.

Further, when the user operates the operation unit 121 of the operation display unit 102 and selects “Delicate clothing” as the course of the drying operation, the energization time of the PTC heater 9 becomes 10 minutes or the water tank 2 If the internal temperature reaches 35 ° C., it is determined that the energization stop condition of the PTC heater 9 in Table 2 is satisfied. Here, the “delicate clothing” is a course selected by the user when it is desired to process the laundry 5 made of a delicate material such as wool or silk.

Next, in step S304, energization of the PTC heater 9 is stopped. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S305, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S301). This step S305 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S306, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S306 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S307. On the other hand, if it is determined in step S306 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S311 to S313 are sequentially performed, and then the process proceeds to the next step S307.

In step S311, the PTC heater 9 is energized again, and the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is supplied into the drum 3.

In step S312, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S312 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S312, the same determination as in step S306 is performed.

In step S313, energization of the PTC heater 9 is stopped and heating of the air in the PTC heater 9 is stopped.

Finally, in step S307, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S301, the temperature of the air heated by the condenser 704 of the heat pump unit 7 can be further increased and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

Further, the energization of the PTC heater 9 is stopped when the energization stop condition of the PTC heater 9 in Table 2 is satisfied, so that the dry finish of the laundry 5 can be made suitable for the user's desire. .

In the third embodiment, if one of the set energization time of the PTC heater 9 and the set temperature in the water tank 2 is satisfied during the period from the start of the drying operation to the elapse of a predetermined drying time, the PTC Although the energization of the heater 9 has been stopped, the energization of the PTC heater 9 may not be stopped unless both the set energization time of the PTC heater 9 and the set temperature in the water tank 2 are satisfied.

[Fourth Embodiment]
FIG. 16 is a control block diagram of a drum type washing / drying machine according to a fourth embodiment of the present invention. In FIG. 16, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment. Also in the following description, the same reference numerals as those of the first embodiment are assigned to the same components as those of the first embodiment.

The drum type washing and drying machine control device 4060 includes a frosting determination unit 4061 and a defrosting operation unit 4062 in addition to the water tank temperature determination unit 61 and the drying operation assist unit 62. The frost determination unit 4061 and the defrosting operation unit 4062 are each configured by software.

The frosting determination unit 4061 determines whether or not frost has adhered to the evaporator 702 using the first and second

refrigerant temperature sensors

16A and 16B. More specifically, frosting determination unit 4061 determines that frost is attached to evaporator 702 when the temperature of the refrigerant entering evaporator 702 and the temperature of the refrigerant exiting evaporator 702 are both less than 0 ° C. judge.

When the frost determination unit 4061 determines that frost is attached to the evaporator 702, the defrosting operation unit 4062 energizes the PTC heater 9 after stopping the compressor 703, and the PTC heater 9. The heated air is sent to the evaporator 702.

Hereinafter, the control performed by the control device 4060 for drying the laundry 5 will be described with reference to the flowcharts of FIGS. 17A and 17B.

When the above control is started, first, as shown in FIG. 17A, in step S401, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S402, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S403, it is determined whether or not a predetermined drive time (for example, 10 minutes) has elapsed since the start of driving of the compressor 703. This step S403 is repeated until it is determined that a predetermined driving time has elapsed from the start of driving of the compressor 703.

Next, in step S404, whether or not the temperature T1 of the refrigerant flowing from the expansion mechanism 705 to the evaporator 702 and the temperature T2 of the refrigerant flowing from the evaporator 702 toward the compressor 703 are less than 0 ° C. Determine. If it is determined in step S404 that both the temperatures T1 and T2 are not less than 0 ° C., the process proceeds to the next S405. On the other hand, if it is determined in step S404 that both temperatures T1 and T2 are less than 0 ° C., steps S421 to S423 are sequentially performed, and then the process proceeds to next step S404.

In step S421, the compressor 703 is stopped. At this time, energization of the PTC heater 9 is maintained, and the blower fan unit 8 is continuously driven. Thereby, the air heated by the PTC heater 9 circulates through the air circulation path 20. That is, the air heated by the PTC heater 9 flows into the evaporator 702.

In step S422, it is determined whether the temperature T1 of the refrigerant flowing from the expansion mechanism 705 to the evaporator 702 and the temperature T2 of the refrigerant flowing from the evaporator 702 toward the compressor 703 are less than 0 ° C. To do. This step S422 is repeated until it is determined that both the temperatures T1 and T2 are not less than 0 ° C. That is, in step S422, the same determination as in step S404 is performed.

In step S423, the compressor 703 is driven again. Thereby, the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 circulates through the air circulation path 20.

Next, in step S405, it is determined whether or not a predetermined energization time has elapsed since the start of energization of the PTC heater 9. This step S405 is repeated until it is determined that a predetermined energization time has elapsed since the start of energization of the PTC heater 9.

Next, energization of the PTC heater 9 is stopped in step S406. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, as shown in FIG. 17B, in step S407, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S401). This step S407 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S408, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S408 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S409. On the other hand, if it is determined in step S408 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S411 to S413 are sequentially performed, and then the process proceeds to the next step S409.

In step S411, the PTC heater 9 is energized again, and the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is supplied into the drum 3.

In step S412, it is determined based on the signal from the first air temperature sensor 17A whether the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S412 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S412, the same determination as in step S408 is performed.

In step S413, the energization of the PTC heater 9 is stopped, and the heating of air in the PTC heater 9 is stopped.

Finally, in step S409, the compressor 703 and the blower fan unit 8 are stopped.

Thus, when it is determined in step S404 that both the temperatures T1 and T2 are lower than 0 ° C., there is a high possibility that the evaporator 702 has frost. Therefore, the air heated by the PTC heater 9 is caused to flow to the evaporator 702 in step S421. As a result, frost can be removed from the evaporator 702.

In addition, when the frost is removed from the evaporator 702, the compressor 703 is stopped, so the defrosting time can be shortened.

In addition, since the frost formation of the evaporator 702 is determined based on whether both the temperatures T1 and T2 are less than 0 ° C., the reliability of the determination can be improved.

In the fourth embodiment, the first refrigerant temperature sensor 16A attached to the refrigerant pipe connecting the expansion mechanism 705 and the evaporator 702, and the second refrigerant attached to the refrigerant pipe connecting the evaporator 702 and the compressor 703. Although the temperature sensor 16B is used as an example of an evaporator temperature sensor, a temperature sensor attached to the evaporator 702 may be used as an example of an evaporator temperature sensor.

In the fourth embodiment, the frost determination unit 4061 and the defrosting operation unit 4062 are each configured by software, but may be configured by hardware.

[Fifth Embodiment]
FIG. 18 is a control block diagram of a drum type washer / dryer according to a fifth embodiment of the present invention. In FIG. 18, the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment. Also in the following description, the same reference numerals as those of the first embodiment are assigned to the same components as those of the first embodiment.

The drum type washing and drying machine includes a humidity sensor 18 for detecting the humidity in the aquarium 2, a weight sensor 19 for detecting the weight of the laundry stored in the drum 3, and the control of the first embodiment. A control device 5060 that performs control different from the device 60 is provided. The drum type washing and drying machine does not include the first and second

refrigerant temperature sensors

16A and 16B and the first and second

air temperature sensors

17A and 17B of the first embodiment. The humidity sensor 18 is an example of an in-water environment information detection unit for detecting environmental information in the aquarium 2 and an example of an in-water humidity sensor.

The control device 5060 is composed of a microcomputer or the like, and based on signals from the humidity sensor 18, weight sensor, operation unit 121 of the operation display unit 102, etc., the motor 4, the heat pump unit 7, the blower fan unit 8, and the PTC heater. 9, the first and second water supply valves 71 </ b> A and 71 </ b> B, the drain valve 72, the display unit 122 of the operation display unit 102, and the like.

The humidity sensor 18 is attached to the end of the first air circulation duct 23 on the filter device housing 40 side, and outputs a signal indicating the humidity of the air entering the filter device housing 40 to the control device 5060 during the drying operation. . Thereby, the control apparatus 5060 can recognize the humidity in the water tank 2 based on the said signal.

The weight sensor 19 is attached to a portion of the water tank 2 where the motor 4 is attached, and outputs a signal indicating a load applied to the drive shaft of the motor 4 to the control device 5060. Thereby, the control apparatus 5060 can recognize the weight of the laundry 5 accommodated in the drum 3 based on the said signal. The drive shaft refers to a shaft that is directly fixed to the bottom 32 of the drum 3 and rotates integrally with the drum 3.

In addition, the controller 5060 sends air heated by the condenser 704 of the heat pump unit 7 to the drum 3 for a predetermined time during the drying operation, and then whether or not the humidity in the water tank 2 is equal to or lower than the predetermined humidity. When the humidity in the aquarium determines that the humidity in the aquarium is not equal to or lower than the predetermined humidity by the humidity determination in the aquarium 5063 and the humidity determination in the aquarium 5063, the humidity in the aquarium 2 is equal to or lower than the predetermined humidity. The PTC heater 9 is energized, and the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent to the drum 3 for drying operation assisting unit 5062. The aquarium humidity determination unit 5063 and the drying operation assist unit 5062 are each configured by software. The aquarium humidity determination unit 5063 is an example of an aquarium environment determination unit.

Hereinafter, the control performed by the control device 5060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control starts, first, in step S501, the weight of the laundry 5 is detected based on the signal from the weight sensor 19. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. The stored humidity is used as “predetermined humidity” in steps S507 and S512 described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S502, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S503, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S504, it is determined whether or not a predetermined energization time has elapsed since the start of energization of the PTC heater 9. This step S504 is repeated until it is determined that a predetermined energization time has elapsed after the PTC heater 9 is energized.

Next, energization of the PTC heater 9 is stopped in step S505. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S506, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S502). This step S506 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S507, based on the signal from the humidity sensor 18, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S501). If it is determined in step S507 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S508. On the other hand, if it is determined in step S507 that the humidity in the water tank 2 is not lower than the predetermined humidity, steps S511 to S513 are sequentially performed, and then the process proceeds to the next step S508.

In step S511, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S512, based on the signal from the humidity sensor 18, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S501). This step S512 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S512, the same determination as in step S507 is performed.

In step S513, energization of the PTC heater 9 is stopped, and heating of the air in the PTC heater 9 is stopped.

Finally, in step S508, the compressor 703 and the blower fan unit 8 are stopped.

As described above, even if the above steps S501 to S506 are performed and hot air is supplied into the drum 3 for a predetermined drying time, the laundry 5 may not be sufficiently dried. In this case, the humidity in the water tank 2 does not fall below the predetermined humidity. Therefore, if it is determined in step S507 that the humidity in the water tank 2 is not lower than the predetermined humidity, the PTC heater 9 is energized until the humidity in the water tank 2 is lower than the predetermined humidity in steps S511 to S513. The air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is continuously supplied into the drum 3. As a result, it is possible to prevent the drying operation from being finished in a state where moisture is not sufficiently removed from the laundry 5. Therefore, the possibility that the drying finish of the laundry 5 is deteriorated can be reduced.

In step S511, the PTC heater 9 is energized to supply the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 into the drum 3, so that water is sufficiently removed from the laundry 5. The state that is not can be eliminated in a short time.
In the fifth embodiment, step S502 is performed after step S501, but may be performed after the washing operation is performed next to step S501. That is, a washing operation having at least one of a washing process, a rinsing process, and a dehydrating operation may be performed between step S501 and step S502.

In the fifth embodiment, the weight of the laundry 5 is detected by the weight sensor 19, but the weight of the laundry 5 may be detected from the load on the motor 4.

[Sixth Embodiment]
FIG. 20 is a control block diagram of the drum type washer / dryer according to the sixth embodiment of the present invention. In FIG. 20, the same components as those of the first and fifth embodiments are denoted by the same reference numerals as those of the first and fifth embodiments. In the following description, the same reference numerals as those of the first and fifth embodiments are assigned to the same components as those of the first and fifth embodiments.

The drum type washing and drying machine includes a control device 6060 that performs control different from the

control devices

60 and 5060 of the first and fifth embodiments. That is, the controller 6060 energizes the PTC heater 9 from the start of the drying operation until a predetermined drying time elapses, and stops energization of the PTC heater 9 based on the temperature around the outer box. To control.

Hereinafter, the control performed by the control device 6060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control is started, first, in step S601, the weight of the laundry 5 is detected based on the signal from the weight sensor 19. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. The stored humidity is used as “predetermined humidity” in steps S608 and S612 described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S602, the temperature around the outer box is obtained based on the signals from the first and second

air temperature sensors

17A and 17B, and stored in the memory. As a method for obtaining the temperature around the outer box, for example, there is a method using a table indicating the relationship between the signals from the first and second

air temperature sensors

17A and 17B and the temperature around the outer box.

Next, in step S603, the drying operation starts and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S604, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S605, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 1 of the second embodiment is satisfied. This step S605 is repeated until it is determined that the condition for stopping energization of the PTC heater 9 in Table 1 of the second embodiment is satisfied. That is, in step S605, the same determination as in step S204 of the second embodiment is performed.

Next, in step S606, energization of the PTC heater 9 is stopped. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S607, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S603). This step S607 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S608, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S601). If it is determined in step S608 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S609. On the other hand, if it is determined in step S608 that the humidity in the water tank 2 is not lower than the predetermined humidity, steps S611 to S613 are sequentially performed, and then the process proceeds to the next step S609.

In step S611, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S612, it is determined whether the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S601). This step S612 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S612, the same determination as in step S608 is performed.

In step S613, energization of the PTC heater 9 is stopped, and heating of the air in the PTC heater 9 is stopped.

Finally, in step S609, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S603, the humidity of the air heated by the condenser 704 of the heat pump unit 7 can be further increased and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

In addition, the energization of the PTC heater 9 is stopped if the conditions for stopping energization of the PTC heater 9 in Table 3 are satisfied, so that the heating of the PTC heater 9 is not performed more than necessary, and waste of power consumption is saved. Can do.

[Seventh Embodiment]
FIG. 22 is a control block diagram of the drum type washer / dryer according to the seventh embodiment of the present invention. In FIG. 22, the same components as those of the first and fifth embodiments are denoted by the same reference numerals as those of the first and fifth embodiments. In the following description, the same reference numerals as those of the first and fifth embodiments are assigned to the same components as those of the first and fifth embodiments.

The drum type washing and drying machine includes a control device 7060 that performs control different from the

control devices

60 and 5060 of the first and fifth embodiments. That is, the control device 7060 energizes the PTC heater 9 from the start of the drying operation until a predetermined drying time elapses, and stops the energization of the PTC heater 9 based on the course of the drying operation. Control.

Hereinafter, the control performed by the control device 7060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control is started, first, in step S701, the weight of the laundry 5 is detected based on the signal from the weight sensor 19. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. This stored humidity is used as “predetermined humidity” in steps S707 and S712 to be described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S702, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S703, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S704, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 2 of the third embodiment is satisfied. This step S704 is repeated until it is determined that the condition for stopping energization of the PTC heater 9 in Table 2 of the third embodiment is satisfied. That is, in step S704, the same determination as in step S303 of the third embodiment is performed.

Next, energization of the PTC heater 9 is stopped in step S705. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S706, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S702). This step S706 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S707, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S701). If it is determined in step S707 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S708. On the other hand, if it is determined in step S707 that the humidity in the water tank 2 is not lower than the predetermined humidity, steps S711 to S713 are sequentially performed, and then the process proceeds to the next step S708.

In step S711, the PTC heater 9 is energized again, and the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is supplied into the drum 3.

In step S712, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S701). This step S712 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S712, the same determination as in step S707 is performed.

In step S713, energization of the PTC heater 9 is stopped, and air heating in the PTC heater 9 is stopped.

Finally, in step S708, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S702, the temperature of the air heated by the condenser 704 of the heat pump unit 7 can be further raised and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

Further, the energization of the PTC heater 9 is stopped when the energization stop condition of the PTC heater 9 in Table 4 is satisfied, so that the dry finish of the laundry 5 can be made suitable for the user's desire. .

[Eighth Embodiment]
FIG. 24 is a control block diagram of the drum type washer / dryer according to the eighth embodiment of the present invention. In FIG. 24, the same components as those of the first and fifth embodiments are denoted by the same reference numerals as those of the first and fifth embodiments. In the following description, the same reference numerals as those of the first and fifth embodiments are assigned to the same components as those of the first and fifth embodiments.

The drum type washing and drying machine includes a control device 8060 that performs control different from the

control devices

60 and 5060 of the first and fifth embodiments.

The control device 8060 includes a microcomputer and the like, and based on signals from the humidity sensor 18, the weight sensor 19, and the operation unit 121 of the operation display unit 102, the motor 4, the heat pump unit 7, the blower fan unit 8, and the PTC. The heater 9, the first and second

water supply valves

71A and 71B, the drain valve 72, the display unit 122 of the operation display unit 102, and the like are controlled.

The controller 8060 sends air heated by the condenser 704 of the heat pump unit 7 to the drum 3 for a predetermined time during the drying operation, and then the temperature in the water tank 2 is equal to or higher than a predetermined temperature. The water tank environment determination unit 8064 for determining whether or not the humidity in the tank is equal to or lower than the predetermined humidity, and the water tank environment determination unit 8064 allows the temperature in the water tank 2 to be equal to or higher than the predetermined temperature and in the water tank 2. When it is determined that the humidity is not lower than the predetermined humidity, the PTC heater 9 is energized until the temperature in the water tank 2 is equal to or higher than the predetermined temperature and the humidity in the water tank 2 is equal to or lower than the predetermined humidity. A drying operation assisting unit 8062 for further heating the air heated by the condenser 704 and feeding it into the drum 3. Each of the aquarium environment determination unit 8064 and the drying operation assist unit 8062 is configured by software.

Hereinafter, the control performed by the control device 8060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control is started, first, in step S801, the weight of the laundry 5 is detected based on the signal from the weight sensor 19. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. This stored humidity is used as “predetermined humidity” in steps S807 and S812 described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S802, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S803, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S804, it is determined whether or not a predetermined energization time has elapsed since the start of energization of the PTC heater 9. This step S804 is repeated until it is determined that a predetermined energization time has elapsed since the start of energization of the PTC heater 9.

Next, in step S805, energization of the PTC heater 9 is stopped. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S806, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S802). This step S806 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S807, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S807 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S808. On the other hand, if it is determined in step S807 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S811 and S812 are sequentially performed, and then the process proceeds to the next step S808.

In step S811, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S812, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S812 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S812, the same determination as in step S807 is performed.

Next, in step S808, based on the signal from the humidity sensor 18, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S801). If it is determined in step S808 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S809. On the other hand, if it is determined in step S808 that the humidity in the water tank 2 is not equal to or lower than the predetermined humidity, steps S821 and S822 are sequentially performed, and the process proceeds to the next step S809.

In step S821, based on the signal from the humidity sensor 18, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S801). This step S821 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S821, the same determination as in step S808 is performed.

In step S822, energization of the PTC heater 9 is stopped, and air heating in the PTC heater 9 is stopped.

Finally, in step S809, the compressor 703 and the blower fan unit 8 are stopped.

As described above, even if the above steps S801 to S806 are performed and high temperature air is supplied into the drum 3 for a predetermined drying time, the laundry 5 may not be sufficiently dried. In this case, the temperature in the water tank 2 does not exceed a predetermined temperature. Therefore, if it is determined in step S807 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, the PTC heater 9 is energized until the temperature in the water tank 2 becomes equal to or higher than the predetermined temperature in steps S811 and S812. The air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is continuously supplied into the drum 3. Furthermore, when it is determined in step S808 that the humidity in the water tank 2 is not lower than the predetermined humidity, the PTC heater 9 is energized until the humidity in the water tank 2 is lower than the predetermined humidity in steps S821 and S812. The air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is continuously supplied into the drum 3. As a result, it is possible to reliably prevent the drying operation from being finished in a state where moisture is not sufficiently removed from the laundry 5. Therefore, the possibility that the dry finish of the laundry 5 is deteriorated can be reliably reduced.

In step S811, the PTC heater 9 is energized to supply the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 into the drum 3, so that moisture is sufficiently removed from the laundry 5. The state that is not can be eliminated in a short time.

In the eighth embodiment, step S802 is performed after step S801, but may be performed after the washing operation is performed after step S801. That is, a washing operation including at least one of a washing process, a rinsing process, and a dehydrating operation may be performed between step S801 and step S802.

[Ninth Embodiment]
FIG. 26 is a control block diagram of the drum type washer / dryer according to the ninth embodiment of the present invention. In FIG. 26, the same components as those of the first and fifth embodiments are denoted by the same reference numerals as those of the first and fifth embodiments. In the following description, the same reference numerals as those of the first and fifth embodiments are assigned to the same components as those of the first and fifth embodiments.

The drum type washing and drying machine includes a control device 9060 that performs control different from the control device 5060 of the fifth embodiment. That is, the controller 9060 energizes the PTC heater 9 from the start of the drying operation until a predetermined drying time elapses, and stops energization of the PTC heater 9 based on the temperature around the outer box. To control.

Hereinafter, the control performed by the control device 9060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control starts, first, in step S901, the weight of the laundry 5 is detected based on the signal from the weight sensor 19. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. The stored humidity is used as “predetermined humidity” in steps S909 and S921 described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S902, based on the signals from the first and second

air temperature sensors

17A and 17B, the temperature around the outer box is obtained and stored in the memory. As a method for obtaining the temperature around the outer box, for example, there is a method using a table indicating the relationship between the signals from the first and second

air temperature sensors

17A and 17B and the temperature around the outer box.

Next, in step S903, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S904, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S905, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 1 of the second embodiment is satisfied. This step S905 is repeated until it is determined that the energization stop condition of the PTC heater 9 in Table 1 of the second embodiment is satisfied. That is, in step S905, the same determination as in step S204 of the second embodiment is performed.

Next, energization of the PTC heater 9 is stopped in step S906. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S907, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S903). This step S907 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S908, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S908 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S909. On the other hand, if it is determined in step S908 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S911 and S912 are sequentially performed, and then the process proceeds to the next step S909.

In step S911, the PTC heater 9 is energized again, and the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is supplied into the drum 3.

In step S912, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. This step S912 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S912, the same determination as in step S908 is performed.

Next, in step S909, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S901). If it is determined in step S909 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S910. On the other hand, if it is determined in step S909 that the humidity in the water tank 2 is not equal to or lower than the predetermined humidity, steps S921 and S922 are sequentially performed, and then the process proceeds to the next step S910.

In step S921, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S901). This step S921 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S921, the same determination as in step S909 is performed.

In step S922, energization of the PTC heater 9 is stopped, and heating of the air in the PTC heater 9 is stopped.

Finally, in step S910, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S903, the humidity of the air heated by the condenser 704 of the heat pump unit 7 can be further increased and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

[Tenth embodiment]
FIG. 28 is a control block diagram of the drum type washer / dryer according to the tenth embodiment of the present invention. In FIG. 28, the same components as those of the first and fifth embodiments are denoted by the same reference numerals as those of the first and fifth embodiments. In the following description, the same reference numerals as those of the first and fifth embodiments are assigned to the same components as those of the first and fifth embodiments.

The drum type washing and drying machine includes a control device 10060 that performs control different from the

control devices

60 and 5060 of the first and fifth embodiments. That is, the control device 10060 energizes the PTC heater 9 from the start of the drying operation until the predetermined drying time elapses, and stops the energization of the PTC heater 9 based on the course of the drying operation. Control.

Hereinafter, the control performed by the control device 10060 for drying the laundry 5 will be described with reference to the flowchart of FIG.

When the above control is started, first, the weight of the laundry 5 is detected based on the signal from the weight sensor 19 in step S1001. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. The stored humidity is used as “predetermined humidity” in steps S1008 and S1021 described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S1002, the drying operation is started and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S1003, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S1004, it is determined whether or not a condition for stopping energization of the PTC heater 9 in Table 2 of the third embodiment is satisfied. This step S1004 is repeated until it is determined that the condition for stopping energization of the PTC heater 9 in Table 2 of the third embodiment is satisfied. That is, in step S1004, the same determination as in step S303 of the third embodiment is performed.

Next, energization of the PTC heater 9 is stopped in step S1005. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, in step S1006, it is determined whether or not a predetermined drying time has elapsed since the start of the drying operation (S1002). This step S1006 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S1007, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. When it is determined in step S1007 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S1008. On the other hand, if it is determined in step S1007 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S1011 and S1012 are sequentially performed, and then the process proceeds to the next step S1008.

In step S1011, the PTC heater 9 is energized again, and the air heated by the condenser 704 of the heat pump unit 7 and the PTC heater 9 is supplied into the drum 3.

In step S1012, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature based on the signal from the first air temperature sensor 17A. This step S1012 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S1012, the same determination as in step S1007 is performed.

Next, in step S1008, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S1001). If it is determined in step S1008 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S1009. On the other hand, if it is determined in step S1008 that the humidity in the water tank 2 is not equal to or lower than the predetermined humidity, steps S1021 and S1022 are sequentially performed, and then the process proceeds to the next step S1009.

In step S1021, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S1001). This step S1021 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S1021, the same determination as in step S1008 is performed.

In step S1022, energization of the PTC heater 9 is stopped, and heating of the air in the PTC heater 9 is stopped.

Finally, in step S1009, the compressor 703 and the blower fan unit 8 are stopped.

Thus, since the PTC heater 9 is energized in step S1002, the temperature of the air heated by the condenser 704 of the heat pump unit 7 can be further raised and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

[Eleventh embodiment]
FIG. 30 is a control block diagram of the drum type washer / dryer according to the eleventh embodiment of the present invention. In FIG. 30, the same components as those of the first, fourth, fifth, and eighth embodiments are the same as the reference numbers of the first, fourth, fifth, and eighth embodiments. Is attached. Also in the following description, the same constituent parts as those of the first, fourth, fifth, and eighth embodiments include the constituent parts of the first, fourth, fifth, and eighth embodiments. The same reference numbers are attached.

The drum type washing and drying machine includes a control device 11060 that performs control different from the

control devices

60 and 4060 of the first and fourth embodiments.

The control device 11060 includes a microcomputer and the like, and based on signals from the humidity sensor 18, the weight sensor 19, and the operation unit 121 of the operation display unit 102, the motor 4, the heat pump unit 7, the blower fan unit 8, and the PTC. The heater 9, the first and second

water supply valves

Hereinafter, the control performed by the control device 11060 for drying the laundry 5 will be described with reference to the flowcharts of FIGS. 31A and 31B.

When the above control is started, first, as shown in FIG. 31A, the weight of the laundry 5 is detected based on the signal from the weight sensor 19 in step S1101. At this time, the optimum humidity corresponding to the weight of the laundry 5 is obtained from, for example, a table indicating the relationship between the weight of the laundry 5 and the optimum humidity and stored. This stored humidity is used as “predetermined humidity” in steps S1110 and S1141, which will be described later. The optimum humidity corresponding to the weight of the laundry 5 is the humidity in the water tank 2 that will be when the laundry having the weight is sufficiently dried.

Next, in step S1102, the drying operation starts and the PTC heater 9 is energized. Thereby, preheating of the compressor 703 is started.

Next, in step S1103, the compressor 703 is driven. At this time, the blower fan unit 8 is also driven to circulate the air in the water tank 2 through the air circulation path 20. Thus, the air heated by the condenser 704 of the heat pump unit 7 is further heated by the PTC heater 9 and then supplied into the drum 3.

Next, in step S1104, it is determined whether or not a predetermined driving time (for example, 10 minutes) has elapsed from the start of driving of the compressor 703. This step S1104 is repeated until it is determined that a predetermined driving time has elapsed from the start of driving of the compressor 703.

Next, in step S1105, whether or not the temperature T1 of the refrigerant flowing from the expansion mechanism 705 to the evaporator 702 and the temperature T2 of the refrigerant flowing from the evaporator 702 toward the compressor 703 are less than 0 ° C. Determine. If it is determined in step S1105 that both the temperatures T1 and T2 are not less than 0 ° C., the process proceeds to the next S1106. On the other hand, if it is determined in step S1105 that both temperatures T1 and T2 are less than 0 ° C., steps S1121 to S1123 are sequentially performed, and then the process proceeds to next step S1104.

In step S1121, the compressor 703 is stopped. At this time, energization of the PTC heater 9 is maintained, and the blower fan unit 8 is continuously driven. Thereby, the air heated by the PTC heater 9 circulates through the air circulation path 20. That is, the air heated by the PTC heater 9 flows into the evaporator 702.

In step S1122, it is determined whether the temperature T1 of the refrigerant flowing from the expansion mechanism 705 to the evaporator 702 and the temperature T2 of the refrigerant flowing from the evaporator 702 toward the compressor 703 are less than 0 ° C. To do. This step S1122 is repeated until it is determined that both the temperatures T1 and T2 are not less than 0 ° C. That is, in step S1122, the same determination as in step S1104 is performed.

In step S1123, the compressor 703 is driven again. Thereby, the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 circulates through the air circulation path 20.

Next, in step S1106, it is determined whether or not a predetermined energization time has elapsed since the start of energization of the PTC heater 9. This step S1106 is repeated until it is determined that a predetermined energization time has elapsed since the start of energization of the PTC heater 9.

Next, energization of the PTC heater 9 is stopped in step S1107. Thereby, the air heated by the condenser 704 of the heat pump unit 7 is supplied into the drum 3 without being further heated by the PTC heater 9.

Next, as shown in FIG. 31B, it is determined in step S1108 whether or not a predetermined drying time has elapsed since the start of the drying operation (S1102). This step S1108 is repeated until it is determined that a predetermined drying time has elapsed since the start of the drying operation.

Next, in step S1109, based on the signal from the first air temperature sensor 17A, it is determined whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature. If it is determined in step S1109 that the temperature in the water tank 2 is equal to or higher than the predetermined temperature, the process proceeds to the next step S1110. On the other hand, if it is determined in step S1109 that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, steps S1131 and S1132 are sequentially performed, and then the process proceeds to the next step S1110.

In step S1131, the PTC heater 9 is energized again, and the air heated by the condenser 704 and the PTC heater 9 of the heat pump unit 7 is supplied into the drum 3.

In step S1132, whether or not the temperature in the water tank 2 is equal to or higher than a predetermined temperature is determined based on the signal from the first air temperature sensor 17A. This step S1132 is repeated until it is determined that the temperature in the water tank 2 is equal to or higher than a predetermined temperature. That is, in step S1132, the same determination as in step S1109 is performed.

Next, in step S1110, it is determined whether or not the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S1101). If it is determined in step S1110 that the humidity in the water tank 2 is equal to or lower than the predetermined humidity, the process proceeds to the next step S1111. On the other hand, if it is determined in step S1110 that the humidity in the water tank 2 is not equal to or lower than the predetermined humidity, steps S1141 and S1142 are sequentially performed, and then the process proceeds to the next step S1111.

In step S1141, it is determined whether the humidity in the water tank 2 is equal to or lower than a predetermined humidity (humidity stored in step S1101). This step S1141 is repeated until it is determined that the humidity in the water tank 2 is equal to or lower than the predetermined humidity. That is, in step S1141, the same determination as in step S1110 is performed.

In step S1142, the energization of the PTC heater 9 is stopped and the heating of the air in the PTC heater 9 is stopped.

Finally, in step S1111, the compressor 703 and the blower fan unit 8 are stopped.

Thus, when it is determined in step S1105 that both the temperatures T1 and T2 are lower than 0 ° C., there is a high possibility that the evaporator 702 has frost. Therefore, in step S1121, the air heated by the PTC heater 9 is caused to flow to the evaporator 702. As a result, frost can be removed from the evaporator 702.

In the first to eleventh embodiments, the present invention is applied to the drum-type washing / drying machine. However, the present invention may be applied to a so-called vertical washing machine.

Further, in the second to eleventh embodiments, the modifications described in the first embodiment may be performed.

Although specific embodiments of the present invention have been described, the present invention is not limited to the first to fourth embodiments, and various modifications can be made within the scope of the present invention. For example, a suitable combination of the contents described in the first to eleventh embodiments may be used as one embodiment of the present invention. A configuration obtained by deleting or replacing a part of the configuration of the first to eleventh embodiments may be an embodiment of the present invention.

That is, the present invention and the embodiment are summarized as follows.

The washing and drying machine of the present invention
Outer box 1,
A water tank 2 disposed in the outer box 1;
Aquarium environmental

information detection units

17A, 18 for detecting environmental information in the aquarium 2,
A rotating tub 3 that is rotatably arranged in the water tub 2 and houses the laundry 5;
A driving device 4 for rotationally driving the rotating tub 3;
An air circulation path 20 for circulating the air that has flowed out of the water tank 2 from the inside of the rotary tank 3 back into the rotary tank 3, and
A heat pump unit 7 provided in the air circulation path 20 and having an evaporator 702, a compressor 703, a condenser 704, and an expansion mechanism 705;
A blower fan unit 8 for sending the air heated by the condenser 704 of the heat pump unit 7 to the rotating tub 3 side;
A heater 9 for further heating the air heated by the condenser 704 of the heat pump unit 7;

Control devices

60, 2060, 3060, 4060, 5060, 6060, 7060, 8060, 9060, 10060, 11060, and
The

control devices

60, 2060, 3060, 4060, 5060, 6060, 7060, 8060, 9060, 10060, 11060 are:
After a predetermined drying time has elapsed since the start of the drying operation, an in-water tank environment determination unit 61, 5063, 8064 for determining whether the environmental information in the water tank 2 satisfies a predetermined condition;
When the environmental information in the water tank 2 determines that the environmental information in the water tank 2 does not satisfy the predetermined condition by the in-water tank environment determination units 61, 5063, 8064, until the environmental information in the water tank 2 satisfies the predetermined condition And drying operation assisting units 62, 5062, and 8062 that energize the heater 9 and further heat the air heated by the condenser 704 of the heat pump unit 7 and send the air into the rotary tank 3. Yes.

Here, the environmental information in the water tank 2 means at least one of temperature, humidity, and the like in the water tank 2.

According to the said structure, after sending the air heated with the condenser 704 of the said heat pump unit 7 in the rotation tank 3 for the predetermined time, if the laundry 5 is not fully dried, the temperature in the water tank 2 will rise. I can't. Therefore, when the environmental information in the aquarium 2 determines that the environmental information in the aquarium 2 does not satisfy the predetermined condition, the drying operation assisting units 62, 5062, and 8062 are in the aquarium 2. Until the environmental information satisfies the predetermined condition, the heater 9 is energized, and the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent into the rotary tank 3. As a result, it is possible to prevent the drying operation from being finished in a state where moisture is not sufficiently removed from the laundry 5. Therefore, the possibility that the dry finish of the laundry 5 is deteriorated can be reduced.

Further, since the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent into the rotating tub 3, the state where moisture is not sufficiently removed from the laundry 5 can be eliminated in a short time.

In the washing and drying machine of one embodiment,
The tank internal environment information detector 17A is a tank internal temperature sensor 17A for detecting the temperature in the tank 2.
The water tank environment determination unit 61 determines whether the temperature in the water tank 2 is equal to or higher than a predetermined temperature after the predetermined drying time has elapsed since the start of the drying operation. Part 61,
When the temperature in the water tank 2 determines that the temperature in the water tank 2 is not equal to or higher than the predetermined temperature, the temperature in the water tank 2 becomes equal to or higher than the predetermined temperature. Until the heater 9 is energized, the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent into the rotary tank 3.

According to the embodiment, the drying operation assisting unit 62 energizes the heater 9 until the temperature in the water tank 2 becomes equal to or higher than the predetermined temperature, and further heats the air heated by the condenser 704 of the heat pump unit 7. Since it heats and sends in the rotation tank 3, the possibility that the drying finish of the laundry 5 will worsen can be reduced reliably.

In the washing and drying machine of one embodiment,
The tank internal environment information detector 18 is a tank internal humidity sensor 18 for detecting the humidity in the tank 2.
The aquarium environment determination unit 5063 determines whether or not the humidity in the aquarium 2 is equal to or lower than a predetermined humidity after the predetermined drying time has elapsed since the start of the drying operation. Part 5063,
When the humidity in the water tank 2 determines that the humidity in the water tank 2 is not equal to or lower than the predetermined humidity, the humidity in the water tank 2 is equal to or lower than the predetermined humidity. Until the heater 9 is energized, the air heated by the condenser of the heat pump unit 7 is further heated and sent into the rotary tank 3.

According to the embodiment, the drying operation assist unit 5062 energizes the heater 9 until the humidity in the water tank 2 is equal to or lower than the predetermined humidity, and further heats the air heated by the condenser of the heat pump unit 7. Then, since it is sent into the rotating tub 3, the possibility that the dry finish of the laundry 5 will be deteriorated can be reliably reduced.

In the washing and drying machine of one embodiment,
The tank internal environment

information detection units

17A and 18 include a water tank temperature sensor 17A for detecting the temperature in the water tank 2, and a water tank humidity sensor 18 for detecting the humidity in the water tank 2.
After the predetermined drying time has elapsed since the start of the drying operation, the in-water tank environment determination unit 8064 has a temperature in the water tank 2 that is equal to or higher than a predetermined temperature, and the humidity in the water tank 2 is predetermined. Determine whether the humidity is below,
The drying operation assisting unit 8062, when the water tank environment determination unit 8064 determines that the temperature in the water tank 2 is equal to or higher than the predetermined temperature and the humidity in the water tank 2 is not lower than the predetermined humidity. The heater 9 is energized and heated by the condenser 704 of the heat pump unit 7 until the temperature in the water tank 2 is equal to or higher than the predetermined temperature and the humidity in the water tank 2 is equal to or lower than the predetermined humidity. The heated air is further heated and sent into the rotary tank 3.

According to the embodiment, the drying operation assist unit 8062 energizes the heater 9 until the temperature in the water tank 2 is equal to or higher than the predetermined temperature and the humidity in the water tank 2 is equal to or lower than the predetermined humidity. Since the air heated by the condenser 704 of the heat pump unit 7 is further heated and sent into the rotary tub 3, the possibility that the drying finish of the laundry 5 is deteriorated can be more reliably reduced.

One embodiment of the washing and drying machine,

Evaporator temperature sensors

16A and 16B for detecting the temperature of the evaporator 702 are provided,
The control device 4060
Using the

evaporator temperature sensors

16A and 16B, a frost determination unit 4061 for determining whether or not frost is attached to the evaporator 702,
When the frosting determination unit 4061 determines that frost is attached to the evaporator 702, the compressor 703 is stopped, and then the heater 9 is energized and the air heated by the heater 9. And a defrosting operation unit 4062 for sending the water to the evaporator 702.

According to the above-described embodiment, the above energizes the heater 9 and sends the air heated by the heater 9 to the evaporator 702, so that frost can be removed from the evaporator 702.

In the washing and drying machine of one embodiment,
The

evaporator temperature sensors

16A and 16B include a first refrigerant temperature sensor 16A for detecting the temperature of the refrigerant entering the evaporator 702, and a second refrigerant for detecting the temperature of the refrigerant discharged from the evaporator 702. A temperature sensor 16B,
When the temperature of the refrigerant entering the evaporator 702 and the temperature of the refrigerant exiting the evaporator 702 are both less than 0 ° C., the frost determination unit 4061 determines that frost is attached to the evaporator 702. judge.

According to the embodiment, when both the temperature of the refrigerant entering the evaporator 702 and the temperature of the refrigerant exiting the evaporator 702 are less than 0 ° C., frost is attached to the evaporator 702 with high probability. . Therefore, the determination of frost adhesion by the frost determination unit 4061 is highly reliable.

In the washing and drying machine of one embodiment,
A weight sensor 19 for detecting the weight of the laundry 5 accommodated in the rotating tub 3;
The predetermined humidity is determined based on the weight of the laundry 5 detected by the weight sensor 19.

According to the above embodiment, by determining the predetermined humidity based on the weight of the laundry 5 detected by the weight sensor 19, a drying process according to the weight of the laundry 5 can be performed.

One embodiment of the washing and drying machine,
Outer box

ambient temperature sensors

17A and 17B for detecting the temperature around the outer box,
The controller 2060 energizes the heater 9 between the start of the drying operation and the elapse of the predetermined drying time, and the energization of the heater 9 based on the temperature around the outer box. Control the stop of the.

According to the embodiment, since the controller 2060 energizes the heater 9 during the period from the start of the drying operation until the predetermined drying time elapses, the controller 2060 is heated by the condenser 704 of the heat pump unit 7. The temperature of the air can be further raised and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

Further, since the control device 2060 controls the stop of energization of the heater 9 based on the temperature around the outer box, the heater 9 is not heated more than necessary, and waste of power consumption can be saved.

In the washing and drying machine of one embodiment,
The controller 3060 energizes the heater 9 between the start of the drying operation and the elapse of the predetermined drying time, and the energization of the heater 9 is performed based on the course of the drying operation. Control the stop.

According to the embodiment, since the controller 3060 energizes the heater 9 during the period from the start of the drying operation until the predetermined drying time elapses, the controller 3060 is heated by the condenser 704 of the heat pump unit 7. The temperature of the air can be further raised and applied to the laundry 5. Therefore, the drying efficiency of the laundry 5 can be increased during the period from the start of the drying operation until the predetermined drying time elapses.

In addition, since the control device 3060 controls the stop of energization of the heater 9 based on the course of the drying operation, the drying finish of the laundry 5 can be made suitable for the user's desire.

In the washing and drying machine of one embodiment,
The blower fan unit 8 is disposed on the downstream side of the heater 9.

According to the above embodiment, since there is the blower fan unit 8 on the downstream side of the heater 9, the vibration from the rotating tub 3 side is transmitted to the heater 9 after being attenuated by the blower fan unit 8. Therefore, as a result of the fact that the heater 9 can be prevented from shaking greatly, the reliability of the heater 9 can be improved.

DESCRIPTION OF SYMBOLS 1 Outer box 2 Water tank 3 Drum 4 Motor 5 Laundry 7 Heat pump unit 8 Blower fan unit 16A 1st refrigerant | coolant temperature sensor 16B 2nd refrigerant | coolant temperature sensor 17A 1st air temperature sensor 17B 2nd air temperature sensor 18 Humidity sensor 19 Weight sensor 20 Air circulation path 23 1st air circulation duct 24 2nd air circulation duct 26 3rd

air circulation duct

60, 2060, 3060, 4060, 5060, 6060, 7060, 8060, 9060, 10060, 11060 Control device 61 Temperature determination part in water tank 62,8062 Drying operation assist part 701 Casing 702 Evaporator 703 Compressor 704 Condenser 705 Expansion mechanism 713 Opening part 901 Heat generating part 902 Heat transfer fin 903 Frame part 904 Terminal cover part 906 Seal member mounting part 910 Annular groove 4061 frost determination Part 4062 Defrosting operation unit 5063 Water tank humidity determination unit 8064 Water tank environment determination unit

Claims

An outer box,
A water tank disposed in the outer box;
An aquarium environmental information detection unit for detecting environmental information in the aquarium,
A rotating tub that is rotatably arranged in the water tub, and stores the laundry;
A driving device for rotationally driving the rotating tank;
An air circulation path for circulating air returned from the water tank to the outside of the water tank;
A heat pump unit provided in the air circulation path and having an evaporator, a compressor, a condenser and an expansion mechanism;
A blower fan unit for sending the air heated by the condenser of the heat pump unit to the rotating tank side;
A heater for further heating the air heated by the condenser of the heat pump unit;
A control device,
The control device
After a predetermined drying time has elapsed since the start of the drying operation, an environmental determination unit in the water tank that determines whether the environmental information in the water tank satisfies a predetermined condition;
When the environmental information in the aquarium determines that the environmental information in the aquarium does not satisfy the predetermined condition, the energization of the heater is performed until the environmental information in the aquarium satisfies the predetermined condition. A washing and drying machine comprising: a drying operation assisting unit that further heats the air heated by the condenser of the heat pump unit and sends the air into the rotating tub.
In the washing and drying machine according to claim 1,
The aquarium environmental information detection unit is a water tank temperature sensor for detecting the temperature in the water tank,
The water tank environment determination unit is a water tank temperature determination unit that determines whether or not the temperature in the water tank is equal to or higher than a predetermined temperature after the predetermined drying time has elapsed since the start of the drying operation. Yes,
When the temperature in the water tank is determined not to be equal to or higher than the predetermined temperature by the temperature determining part in the water tank, the drying operation assist unit is configured to increase the heater until the temperature in the water tank becomes equal to or higher than the predetermined temperature. A washing and drying machine, wherein the air heated by the condenser of the heat pump unit is further heated and sent into the rotating tub.
In the washing and drying machine according to claim 1,
The aquarium environmental information detection unit is a humidity sensor in the aquarium for detecting the humidity in the aquarium,
The water tank environment determination unit is a water tank humidity determination unit that determines whether the humidity in the water tank is equal to or lower than a predetermined humidity after the predetermined drying time has elapsed since the start of the drying operation. Yes,
If the humidity in the water tank determines that the humidity in the water tank is not less than or equal to the predetermined humidity, the drying operation assisting unit is configured until the humidity in the water tank becomes equal to or lower than the predetermined humidity. A washing and drying machine, wherein the air heated by the condenser of the heat pump unit is further heated and sent into the rotating tub.
In the washing and drying machine according to claim 1,
The aquarium environmental information detection unit comprises a water tank temperature sensor for detecting the temperature in the water tank, and a water tank humidity sensor for detecting the humidity in the water tank,
After the predetermined drying time has elapsed since the start of the drying operation, the in-water tank environment determination unit is configured such that the temperature in the water tank is equal to or higher than the predetermined temperature, and the humidity in the water tank is equal to or lower than the predetermined humidity. Determine if there is,
When the temperature in the water tank is determined to be not less than the predetermined temperature and the humidity in the water tank is not equal to or less than the predetermined humidity, the drying operation assisting unit is in the water tank. The heater is energized until the temperature of the water tank is equal to or higher than the predetermined temperature and the humidity in the water tank is equal to or lower than the predetermined humidity, and the air heated by the condenser of the heat pump unit is further heated to A washing and drying machine characterized by being sent into a rotating tub.
In the washing and drying machine according to any one of claims 1 to 4,
An evaporator temperature sensor for detecting the temperature of the evaporator;
The control device
Using the evaporator temperature sensor, a frost determination unit that determines whether or not frost is attached to the evaporator; and
When the frosting determination unit determines that frost is attached to the evaporator, the compressor is stopped, the heater is energized, and the air heated by the heater is supplied to the evaporator. A laundry dryer having a defrosting operation section for sending.
In the washing and drying machine according to claim 5,
The evaporator temperature sensor has a first refrigerant temperature sensor for detecting the temperature of the refrigerant entering the evaporator, and a second refrigerant temperature sensor for detecting the temperature of the refrigerant that has exited the evaporator. ,
When the temperature of the refrigerant entering the evaporator and the temperature of the refrigerant exiting the evaporator are both less than 0 ° C., the frost determination unit determines that frost is attached to the evaporator. Features a washing dryer.
In the washing and drying machine according to claim 3 or 4,
A weight sensor for detecting the weight of the laundry contained in the rotating tub;
The laundry dryer is characterized in that the predetermined humidity is determined based on a weight of the laundry detected by the weight sensor.
In the washing and drying machine according to any one of claims 1 to 7,
Provided with a temperature sensor around the outer box for detecting the temperature around the outer box,
The controller energizes the heater between the start of the drying operation and the elapse of the predetermined drying time, and stops energization of the heater based on the temperature around the outer box. Washing and drying machine characterized by controlling.
In the washing and drying machine according to any one of claims 1 to 7,
The controller energizes the heater between the start of the drying operation and the elapse of the predetermined drying time, and controls the stop of energization of the heater based on the course of the drying operation. A washing and drying machine characterized by