JP2024022171A - Washing and drying machine - Google Patents

Abstract

[Problem] To achieve both improved energy saving performance and shortened drying operation time. [Solution] A washer/dryer 100 includes a drum (washing tub 7) rotatably provided in a housing 1, a motor 10 that rotationally drives the drum, and a blower device (a blower unit) that blows drying air to the drum. 28), a circulating air passage 102 through which drying air blown by a blower device flows into the drum, a first heating device (heater 43) that heats the drying air, and a drying device of a different type from the first heating device. A heat exchanger (heat pump unit 58) having a second heating device (condenser 58b) that heats the air for use, a temperature detection device (temperature sensor 36) that detects the temperature inside the drum, and a temperature detection device (temperature sensor 36) that controls the drying operation. A control device 33 is provided. The control device switches between a drying operation using the first heating device and a drying operation using the heat exchanger depending on the detection result of the temperature detecting device. [Selection diagram] Figure 2

Description

The present invention relates to a washer/dryer.

The drying methods of washer/dryers for washing and drying clothes can be roughly divided into two types: a heater drying method that heats the air using a heater, and a heat pump drying method that heats the air using a heat pump.

In the heater drying method, air inside a washing tub containing clothes is circulated through an air channel equipped with a water-cooled dehumidifying mechanism and a heater. In the heater drying method, a water-cooled dehumidifying mechanism condenses moisture in the air to dehumidify it, and a heater heats the air. Then, in the heater drying method, a blower unit is used to send high temperature, low humidity air into the washing tub to dry the clothes. In the heater drying method, since the amount of heating by the heater is large, the time required to reach the target temperature in the washing tub can be shortened.

On the other hand, in the heat pump drying method, the air inside the washing tub containing clothes is circulated through an air channel equipped with a heat pump evaporator and condenser. In the heat pump drying method, an evaporator condenses moisture in the air to dehumidify it, and a condenser heats the air. Thereafter, the heat pump drying method uses a blower unit to send high temperature, low humidity air into the washing tub to dry the clothes. The heat pump drying method has high heat exchange efficiency between the evaporator and air and between the condenser and air, and is therefore excellent in terms of energy saving performance.

In order to effectively eliminate germs adhering to clothing, a washer/dryer equipped with a heater and a heat pump has been provided (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2013-244171

However, the conventional technology disclosed in Patent Document 1 has a problem in that it is desired to achieve both an improvement in energy saving performance and a reduction in drying operation time, as described below.

For example, the heater drying method has lower heat exchange efficiency than the heat pump drying method, and therefore has lower energy saving performance. On the other hand, although the heat pump drying method has higher energy-saving performance than the heater drying method, the amount of heating by the condenser of the heat pump for the same amount of air is smaller than the amount of heating by the heater. Therefore, when using the heat pump drying method, when the output of the blower unit is the same as the heater drying method, it takes longer to bring the temperature inside the washing tub to the target temperature during the drying process compared to the heater drying method. . Therefore, in the heat pump drying method, in order to reach the target temperature in the washing tub during the drying process in the same time as in the heater drying method, the output of the blower unit and the heat pump must be increased. Therefore, it is desired that conventional washing and drying machines achieve both improved energy-saving performance and shortened drying operation time.

In addition, the conventional technology disclosed in Patent Document 1 switches between drying operation using a heater and drying operation using a heat pump in order to effectively eliminate germs attached to clothing, which improves energy saving performance and reduces drying operation time. It does not realize both the shortening of Therefore, the conventional technology disclosed in Patent Document 1 is desired to achieve both improved energy saving performance and shortened drying operation time.

The present invention has been made to solve the above problems, and its main purpose is to provide a washer/dryer that achieves both improved energy saving performance and shortened drying operation time.

In order to achieve the above object, the present invention provides a washer/dryer, which includes a drum rotatably provided in a housing, a motor that rotationally drives the drum, and a blower device that blows drying air to the drum. , a circulating air path through which drying air blown by the blowing device flows into the drum, a first heating device heating the drying air, and heating a different type of drying air from the first heating device. A heat exchanger having a second heating device, a temperature detection device that detects the internal temperature of the tank in the drum, and a control device that controls drying operation. Accordingly, the drying operation is switched to either one of the drying operation using the first heating device and the drying operation using the heat exchanger.
Other means will be described later.

According to the present invention, it is possible to achieve both improvement in energy saving performance and reduction in drying operation time.

FIG. 1 is an external view of a washer/dryer according to an embodiment. It is a sectional view showing the internal structure of the washing dryer concerning an embodiment. FIG. 2 is a structural diagram of a drying unit of a washer/dryer according to an embodiment. FIG. 1 is a system schematic diagram of a washer/dryer according to an embodiment. It is a flow chart showing operation of the washer dryer concerning an embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention (hereinafter referred to as "this embodiment") will be described in detail below with reference to the drawings. Note that each figure is merely shown schematically to the extent that the present invention can be fully understood. Therefore, the present invention is not limited to the illustrated example. Further, in each figure, common or similar components are denoted by the same reference numerals, and redundant explanation thereof will be omitted.

[Embodiment]
<Configuration of washer/dryer>
The configuration of the washer/dryer 100 according to the present embodiment will be described below with reference to FIGS. 1 to 4. FIG. 1 is an external view of a washer/dryer 100 according to this embodiment. FIG. 2 is a sectional view showing the internal structure of the washer/dryer 100. FIG. 3 is a structural diagram of the drying unit of the washer/dryer 100. FIG. 4 is a system schematic diagram of the washer/dryer 100.

As shown in FIG. 1, a housing 1 constituting the outer shell of a drum-type washer/dryer 100 is mounted on a rectangular base 1h, and includes left and right side plates 1a, 1b, a front cover 1c, and a rear cover. 1d, a top cover 1e, and a lower front cover 1f.

The left and right side plates 1a and 1b are connected by U-shaped upper reinforcing members, front reinforcing members, and rear reinforcing members (not shown), and form a box-shaped casing 1 including the base 1h. It has sufficient strength as a body.

The door 9 closes a slot for loading and unloading clothes provided at the center of the front cover 1c. The door 9 is supported so as to be openable and closable by a hinge provided on the front reinforcing member. By pulling the door release lever 9a, a locking mechanism (not shown) is released and the door 9 is opened, and by pressing the door 9 against the front cover 1c, it is locked and closed. The front reinforcement member has a circular opening for loading and unloading clothing concentrically with the opening of the outer tub, which will be described later.

The operation panel 2 is provided in the upper center of the housing 1. The operation panel 2 includes a power switch 3, operation buttons 4 and 5, and a display 6, and is electrically connected to a control device 33 (FIG. 2) provided at the top of the housing 1.

A detergent container 17 is provided beside the operation panel 2. That is, the detergent container 17 is provided on the upper left side of the housing 1 . The detergent container 17 is equipped with a detergent tray with an openable lid. The detergent container 17 is fixed to the upper reinforcing member of the housing 1. The top cover 1e on the rear side of the detergent container 17 is provided with a water supply hose connection port 18a from a water faucet and a water suction hose connection port 18b for remaining hot water in the bath.

As shown in FIG. 2, inside the housing 1, a washing tub 7 and an outer tub 8 are arranged. The washing tub 7 is a rotatably supported cylindrical drum, and has numerous through holes for water and ventilation in its outer peripheral wall and bottom wall, and an opening for taking clothes in and out on its front end surface. A section 7a is provided. A fluid balancer 7b integrated with the washing tub 7 is provided outside the opening 7a. A plurality of lifters 7c extending in the axial direction are provided inside the outer peripheral wall, and when the washing tub 7 is rotated during washing and drying, the clothes are lifted along the outer peripheral wall by the lifters 7c and centrifugal force, and then fall by gravity. Repeat the movements. The rotation center axis of the washing tub 7 is horizontal or inclined so that the opening 7a side is higher.

The outer tub 8 coaxially encloses the washing tub 7 and has a cylindrical shape. The front surface of the outer tank 8 is open, and a motor 10 is attached to the center of the outer side of the rear end surface. A rotating shaft of the motor 10 passes through the outer tub 8 and is coupled to the washing tub 7. An outer tank cover 8a is provided on the front surface of the outer tank 8, allowing water to be stored in the outer tank 8. The outer tub cover 8a has an opening 8b in the front center thereof for putting in and taking out clothes. The opening 8b and an opening provided in a front reinforcing member (not shown) are connected by a rubber bellows 11, and by closing the door 9, the outer tank 8 is sealed against water.

A temperature sensor 36 is provided near the bottom of the outer tank 8. The temperature sensor 36 is a temperature detection device for detecting the temperature inside the tank. Further, a drain port 12 is provided at the lowest part of the bottom surface of the outer tank 8, and a drain hose 13 is connected to the drain port 12. A drain valve 14 is provided in the middle of the drain hose 13. By closing the drain valve 14 and supplying water, water is stored in the outer tank 8, and by opening the drain valve 14, the water in the outer tank 8 is discharged to the outside of the machine. An overflow port is provided on the front outer wall of the outer tank cover 8a, and is connected to the drain hose 13 via an overflow hose 15 on the downstream side of the drain valve 14.

The outer tank 8 is vibration-proofly supported by a suspension 16 (consisting of a coil spring and a damper) whose lower side is fixed to the base 1h. Further, the upper side of the outer tank 8 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member, which prevents the outer tank 8 from falling in the front-rear direction.

Parts related to water supply, such as a water supply electromagnetic valve 18, a bath water supply pump 20, and a water level sensor 21 (FIG. 4), are provided around the outer tank 8. The water supply solenoid valve 18 includes a main water supply solenoid valve 18c (FIG. 4), a finishing agent water supply solenoid valve 18d (FIG. 4), a cooling water supply solenoid valve 18e (FIG. 4), and the like. The detergent container 17 is connected to the main water supply electromagnetic valve 18c (FIG. 4) and the bath water supply pump 20 on one side, and to the outer tank 8 on the other side. When the detergent container 17 opens the main water supply solenoid valve 18c (FIG. 4) or operates the bath water supply pump 20, washing water is supplied to the outer tub 8 and the washing tub 7 along with the detergent put in the detergent container 17. supply. Further, the detergent container 17 supplies washing water to the outer tub 8 together with the softening agent placed in the detergent container 17 by opening the finishing agent water supply solenoid valve 18d (FIG. 4).

Further, a circulation duct 19 is vertically installed inside the back surface of the outer tank 8. The lower part of the circulation duct 19 opens to the intake port 8c on the lower back surface of the outer tank 8. The intake port 8c is connected to a dry air path switching solenoid valve 59a. The dry air path switching solenoid valve 59a is connected to the heat pump unit 58 and the solenoid valve connection hose 60. Inside the heat pump unit 58, an evaporator 58a for dehumidifying moisture in the air and a condenser 58b for heating the air are provided. The solenoid valve connection hose 60 is connected to the dry air path switching solenoid valve 59b and the circulation duct 19, and the circulation duct 19 has a built-in water cooling dehumidification mechanism 31.

The water cooling dehumidification mechanism 31 has a cooling nozzle 31a and a plurality of dehumidification ribs 31b installed on the wall surface of the circulation duct 19. The dehumidifying rib 31b is installed from around the cooling water outlet of the cooling nozzle 31a to around the lower air intake port 8c of the circulation duct 19. The horizontal cross-sectional shape of this dehumidifying rib 31b may be a convex shape or a concave groove shape. The cooling nozzle 31a is connected to the cooling water supply solenoid valve 18e through a cooling water hose 32, and by opening the cooling water supply solenoid valve 18e, cooling water is supplied to the cooling nozzle 31a. The cooling water slowly flows down between the dehumidifying ribs 31b, enters the outer tank 8 through the intake port 8c, and is discharged from the drain port 12. In addition, the main water supply solenoid valve 18c and the circulation duct 19 are connected by a cleaning hose (not shown) in addition to the cooling water hose 32, and by opening the main water supply solenoid valve 18c, cleaning water for cleaning the inside of the circulation duct 19 is supplied. supply The cleaning water travels along the wall of the circulation duct and washes away dust attached to the wall.

The upper part of the circulation duct 19 is connected by a rubber bellows 42 to a filter duct 27 installed at the rear upper part of the housing 1 . The filter duct 27 has an opening on its upper surface, into which a pull-out dry filter 30 is inserted. The air that has entered the filter duct 27 from the circulation duct 19 flows into a mesh filter (not shown) of the drying filter 30 to remove lint. The dry filter 30 is cleaned by pulling out the dry filter 30 and rubbing the surface of the mesh filter (not shown) by hand or with a brush, or by suctioning with a vacuum cleaner or the like. An opening is provided on the side surface of the dry filter 30 insertion part of the filter duct 27 , and an intake duct 29 is connected to this opening, and the other end of the intake duct 29 is connected to the intake port of the blower unit 28 . ing.

The blower unit 28 includes a driving motor 28a, a fan case 28b, and a fan impeller 28c. A heater 43 is built into the fan case 28b and heats the air sent from the fan impeller 28c.

The input of the heater 43 can be switched. In this embodiment, the heater 43 will be described as having a strong mode and a weak mode. A discharge port of the blower unit 28 is connected to the hot air duct 41. The hot air duct 41 is connected to a front outlet 44 provided in the outer tank cover 8a via a rubber bellows pipe 41a and a bellows pipe joint 41b. The front air outlet 44 opens into the washing tub 7. Wind blows out from the front air outlet 44 toward the inside of the washing tub 7 along the solid arrow. The wind blown out from the front outlet 44 is heated by the heater 43 or the condenser 58b of the heat pump unit 58, and is accelerated by the fan impeller 28c to become high-speed warm air, which blows onto the clothes in the washing tub 7. It is designed to hit directly.

In this embodiment, since the blower unit 28 is provided on the upper right side of the housing 1, the front air outlet 44 is provided at the diagonally upper right position of the outer tank cover 8a, and the distance to the front air outlet 44 is It is made as short as possible to minimize pressure loss and heat escape. A temperature sensor 34 is provided at the inlet of the blower unit 28, and a temperature sensor 35 is provided at the outlet of the heater 43.

In such a configuration, the blower unit 28 and the heat pump unit 58 function as a drying unit 101. The configuration of the drying unit 101 will be described below with reference to FIG. 3.

As shown in FIG. 3, the drying unit 101 has a circulation air path 102 that circulates air. The circulation air passage 102 discharges moist air that hits the clothes in the washing tub 7 from inside the washing tub 7 to the outside, heats it with the heater 43 of the ventilation unit 28 or the condenser 58b of the heat pump unit 58, and cools the air inside the washing tub 7. It is configured to return to When the air is heated by the heater 43 of the blower unit 28, the circulation air path 102 connects the washing tub 7, the outer tub 8, the drying air path switching solenoid valve 59a, the solenoid valve connection hose 60, the drying air path switching solenoid valve 59b, and the circulation air path 102. The route returns to the washing tub 7 through the duct 19, the drying filter 30, the blower unit 28, and the front outlet 44. In addition, when heating air with the condenser 58b of the heat pump unit 58, the circulation air path 102 connects the washing tub 7, the outer tub 8, the drying air path switching solenoid valve 59a, and the heat pump unit 58 (inside the heat pump unit 58, evaporation occurs). 58a and condenser 58b), the drying air path switching solenoid valve 59b, the circulation duct 19, the drying filter 30, the blower unit 28, and the front outlet 44 to return to the washing tub 7.

When the drying unit 101 drives the air blowing unit 28 and energizes the heater 43 in the air path, warm air is blown into the washing tub 7 from the front air outlet 44 . The warm air blown into the washing tub 7 hits the damp clothes, warms them, and evaporates moisture from the clothes. During the drying operation, the washing tub 7 is rotated in forward and reverse directions, and the clothes are lifted up and dropped by gravity repeatedly, so that warm air is evenly distributed over the clothes. The hot and humid air flows from the through hole provided in the washing tub 7 to the outer tub 8, and from the air intake port 8c to the drying air path switching solenoid valve 59a. The drying air passage switching solenoid valve 59a switches the air passage according to the temperature inside the washing tub 7.

When the dry air passage switching solenoid valve 59a is closed, the hot and humid air flows into the solenoid valve connection hose 60, passes through the dry air passage switching solenoid valve 59b, and is then sucked into the circulation duct 19. At this time, the dry air path switching solenoid valve 59b is closed, and the structure is such that hot and humid air does not flow into the heat pump unit 58. Cooling water flows down into a water-cooling dehumidifying mechanism 31 provided on the wall of the circulation duct 19, and the high-temperature and humid air condenses and dehumidifies when it comes into contact with the cooling water, becoming high-temperature and low-humid air, which enters the drying filter 30. .

When the dry air path switching solenoid valve 59a is open, high temperature and high humidity air flows into the heat pump unit 58. At this time, the power supply to the heater 43 and the flow of cooling water to the water cooling and dehumidifying mechanism 31 are stopped. The high-temperature, high-humidity air that has flowed into the heat pump unit 58 becomes high-temperature, low-humidity air when it comes into contact with the evaporator 58a and condenser 58b within the heat pump unit 58. The high-temperature, low-humidity air passes through the drying air path switching solenoid valve 59b, is sucked into the circulation duct 19, flows through the circulation duct 19 from bottom to top, and enters the drying filter 30.

The high-temperature, low-humidity air that has flowed into the drying filter 30 is sucked into the blower unit 28 and then blown into the washing tub 7 from the front outlet 44 again. A temperature sensor 34 is provided between the dry filter 30 and the blower unit 28 to detect the temperature of the circulating air.

The configuration of the control device 33 of the washer/dryer 100 will be described below with reference to FIG. 4. As shown in FIG. 4, the microcomputer 50 is connected to an operation button input circuit 51 connected to the operation buttons 4 and 5, a water level sensor 21, and temperature sensors 34, 35, and 36, and is connected to the user's button operations and the washing process. , receives various information signals during the drying process. The output from the microcomputer 50 is connected to a drive circuit 54, and connected to the water supply solenoid valves 18 (18c, 18d, 18e), the drain valve 14, the motor 10, the ventilation unit 28, the heater 43, the bath water supply pump 20, etc. , control their opening/closing, rotation, and energization. It is also connected to a 7-segment light emitting diode or liquid crystal display 6 and a buzzer 57 for informing the user of the operating status of the washer/dryer 100.

<Washing dryer operation>
In order to shorten the operating time, the washer/dryer 100 operates the heater 43, which can more easily bring the temperature in the washing tub 7 to the target temperature than the heat pump unit 58, before the heat pump unit 58. Then, when the temperature detected by the temperature sensor 36 becomes equal to or higher than the target temperature, the washer/dryer 100 switches the operation to the heat pump unit 58 which has higher energy saving performance than the heater 43. The operation of washer/dryer 100 will be described below with reference to FIG. 5. FIG. 5 is a flowchart showing the operation of washer/dryer 100.

As shown in FIG. 5, washer/dryer 100 starts drying operation (step S105). The washer/dryer 100 first performs a heater drying operation (step S110). In the heater drying operation, the heater 43 is energized, cooling water is caused to flow through the water cooling dehumidifying mechanism 31, and air is heated while being dehumidified. At this time, both the drying air passage switching solenoid valve 59a and the drying air passage switching solenoid valve 59b are closed.

After step S110, the washer/dryer 100 constantly detects the temperature inside the washing tub 7 with the temperature sensor 36 (step S115), and determines whether the temperature detected by the temperature sensor 36 is equal to or higher than the set temperature (for example, 60° C.). (Step S120).

The present embodiment will be described assuming that the set temperature is, for example, 60°C. The set temperature of "60° C." is suitable because it can sufficiently dry clothes (laundry) without damaging them. However, the set temperature may have a positive tolerance of several degrees and a negative tolerance of several degrees with respect to "60°C." In other words, if the set temperature is within the range from more than the negative tolerance to 60° C. to less than the positive tolerance, the clothes can be sufficiently dried without damaging them. In other words, if the set temperature is high enough to exceed the positive tolerance for 60°C, it may damage the clothing, while if the set temperature is below the negative tolerance for 60°C. If the temperature is too low, there is a possibility that the clothes cannot be dried sufficiently. The set temperature of "60° C." is suitable because it can avoid such a phenomenon.

If it is determined in step S120 that the temperature detected by the temperature sensor 36 is lower than the set temperature (for example, 60° C.) (“No”), the washer/dryer 100 measures the degree of dryness of the clothes. (Step S125), and it is determined whether the clothes dryness is less than 0.9 (Step S130). Here, the description will be made assuming that "clothing dryness" is "(mass of dry cloth)/(mass of compress)". The degree of dryness of clothes decreases as the clothes dry from a wet state (value "1.0"). In this embodiment, the description will be made assuming that the clothes are sufficiently dry when the clothes dryness is less than 0.9. Note that the degree of dryness of the clothes may be constantly monitored from the start of the drying operation in step S105.

If it is determined in step S130 that the degree of dryness of the clothes is 0.9 or higher (“No”), the process returns to step S115. As a result, the washer/dryer 100 continues the heater drying operation. On the other hand, if it is determined in step S130 that the degree of dryness of the clothes is less than 0.9 (in the case of "Yes"), the clothes are sufficiently dry, so the washer/dryer 100 to end the drying operation.

If it is determined in step S120 that the temperature detected by the temperature sensor 36 is equal to or higher than the set temperature (for example, 60° C.) (“Yes”), the washer/dryer 100 switches from the heater drying operation. Switch to heat pump drying operation (step S135). In the heat pump drying operation, the heater 43 is de-energized, the flow of cooling water to the water cooling dehumidifying mechanism 31 is stopped, the drying air path switching solenoid valve 59a and the drying air path switching solenoid valve 59b are opened, and the heat pump unit 58 is activated. Heats the air while dehumidifying it.

After step S135, the washer/dryer 100 measures the degree of dryness of the clothes (step S140), and determines whether the degree of dryness of the clothes is less than 0.9 (step S145).

If it is determined in step S145 that the degree of dryness of the clothes is 0.9 or higher (“No”), the process returns to step S140. As a result, the washer/dryer 100 continues the heat pump drying operation. On the other hand, if it is determined in step S145 that the degree of dryness of the clothes is less than 0.9 (in the case of "Yes"), the clothes are sufficiently dry, so the washer/dryer 100 uses the heat pump unit 58 is stopped to complete the drying operation.

<Main features of washer/dryer>
(1) As shown in FIG. 2, the washer/dryer 100 according to the present embodiment includes a drum (washing tub 7) rotatably provided in the housing 1, a motor 10 that rotationally drives the drum, and a A blower device (blower unit 28) that blows drying air, a circulating air path 102 (FIG. 3) that allows the drying air blown by the blower to flow into the drum, and a first heating device (blower unit 28) that heats the drying air. A heat exchanger (heat pump unit 58) having a heater 43), a second heating device (condenser 58b) that heats drying air of a different type from the first heating device, and detects the temperature inside the drum. It includes a temperature detection device (temperature sensor 36) and a control device 33 that controls drying operation. The control device 33 switches between a drying operation using the first heating device (heater 43) and a drying operation using the heat exchanger (heat pump unit 58) according to the detection result of the temperature detecting device (temperature sensor 36).

The washer/dryer 100 according to the present embodiment uses a second drum (washer/dryer 100) that can more easily bring the temperature inside the drum (washing tub 7) to the target temperature than the heat exchanger (heat pump unit 58) in order to shorten the operating time. 1. The heating device (heater 43) is operated first. The washer/dryer 100 operates the heat exchanger (heat pump unit 58) when the temperature detected by the temperature detection device (temperature sensor 36) becomes equal to or higher than the target temperature. Such a washer/dryer 100 operates the first heating device (heater 43) first, so that the temperature inside the drum (washing tub 7) quickly reaches the target temperature, and then it has excellent energy-saving performance. The heat exchanger (heat pump unit 58) is operated. Such a washer/dryer 100 allows the temperature inside the drum (washing tub 7) to reach the target temperature without increasing the output of the blower (blower unit 28) and heat exchanger (heat pump unit 58). Therefore, energy saving performance can be improved. Moreover, the washer/dryer 100 can shorten the heating time of air. Therefore, the washer/dryer 100 can achieve both improved energy saving performance and shortened drying operation time.

The conventional technology disclosed in Patent Document 1 mentioned above switches between a drying operation using a heater and a drying operation using a heat pump in order to effectively eliminate germs attached to clothing, thereby improving energy-saving performance and drying. It does not realize both shortening of driving time. In other words, the conventional technology disclosed in Patent Document 1 does not shorten the air heating time without increasing the output of the blower unit 28 and the heat pump unit 58.

(2) As shown in FIG. 2, in the washer/dryer 100 according to the present embodiment, the first heating device is the heater 43, the second heating device is the condenser 58b, and the heat exchanger is the heat pump unit 58. be.

The washer/dryer 100 according to the present embodiment operates the first heating device (heater 43) first to quickly bring the temperature inside the drum (washing tub 7) to the target temperature, and then By operating a heat exchanger (heat pump unit 58) with excellent energy saving performance, energy saving performance can be improved. Such a washer/dryer 100 can achieve both improved energy saving performance and shortened drying operation time.

(3) As shown in FIG. 5, during the drying operation, the control device 33 first performs the drying operation using the first heating device (heater 43), and then performs the drying operation using the heat exchanger (heat pump unit 58). good.

The washer/dryer 100 according to this embodiment can achieve both improved energy saving performance and shortened drying operation time.

(4) As shown in FIG. 5, when the detection result of the temperature detection device (temperature sensor 36) is equal to or higher than a predetermined value, the control device 33 changes the drying operation by the first heating device (heater 43) to the heat exchanger. It is preferable to switch to drying operation using the heat pump unit 58. In this embodiment, the case where the detection result of the temperature detection device (temperature sensor 36) is equal to or higher than a predetermined value means the case where the detected temperature of the temperature sensor 36 is equal to or higher than the target temperature of 60°C.

The washer/dryer 100 according to the present embodiment operates the first heating device (heater 43) first to quickly bring the temperature inside the drum (washing tub 7) to the target temperature, and then By operating a heat exchanger (heat pump unit 58) with excellent energy saving performance, energy saving performance can be improved.

(5) As shown in FIG. 5, the control device 33 preferably maintains the drying operation by the first heating device (heater 43) when the detection result of the temperature detection device (temperature sensor 36) is less than a predetermined value. . In this embodiment, the case where the detection result of the temperature detection device (temperature sensor 36) is less than a predetermined value means the case where the detected temperature of the temperature sensor 36 is less than the target temperature of 60°C.

The washer/dryer 100 according to this embodiment can quickly bring the temperature inside the drum (washing tub 7) to the target temperature.

As described above, according to the washer/dryer 100 according to the present embodiment, it is possible to achieve both improved energy saving performance and shortened drying operation time.

The present invention is not limited to the embodiments described above, and includes various modifications. For example, the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Further, it is possible to replace a part of the configuration of the embodiment with other configurations, and it is also possible to add other configurations to the configuration of the embodiment. Furthermore, it is possible to add, delete, or replace a part of each configuration with other configurations.

1 Housing 2 Operation panel 3 Power switch 7 Washing tub (drum)
8 Outer tank 10 Motor 28 Air blower unit (air blower)
33 Control device 34, 35 Temperature sensor 36 Temperature sensor (temperature detection device)
41 Hot air duct 43 Heater (first heating device)
58 Heat pump unit (heat exchanger)
58a Evaporator 58b Condenser (second heating device)
100 Washing/drying machine 101 Drying unit 102 Circulating air path

Claims (5)

A drum rotatably installed inside the housing,
a motor that rotationally drives the drum;
a blower device that blows drying air to the drum;
a circulation air path through which drying air blown by the air blower flows into the drum;
a first heating device that heats drying air;
a heat exchanger having a second heating device that heats drying air of a different type from the first heating device;
a temperature detection device that detects the temperature inside the drum;
A control device for controlling drying operation,
The control device switches between a drying operation using the first heating device and a drying operation using the heat exchanger according to a detection result of the temperature detecting device.
A washer/dryer characterized by: The washer/dryer according to claim 1,
The first heating device is a heater,
The second heating device is a condenser,
the heat exchanger is a heat pump unit,
A washer/dryer characterized by: The washer/dryer according to claim 1,
During a drying operation, the control device first performs a drying operation using the first heating device, and then performs a drying operation using the heat exchanger.
A washer/dryer characterized by: The washer/dryer according to claim 3,
The control device switches from the drying operation using the first heating device to the drying operation using the heat exchanger when the detection result of the temperature detection device is equal to or higher than a predetermined value.
A washer/dryer characterized by: The washer/dryer according to claim 3,
The control device maintains the drying operation by the first heating device when the detection result of the temperature detection device is less than a predetermined value.
A washer/dryer characterized by:

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