CN107022866B

CN107022866B - Washing and drying integrated machine and control method thereof

Info

Publication number: CN107022866B
Application number: CN201710117765.7A
Authority: CN
Inventors: 张江; 周存玲; 付玉叶; 王波
Original assignee: Wuxi Little Swan Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2017-03-01
Filing date: 2017-03-01
Publication date: 2020-07-14
Anticipated expiration: 2037-03-01
Also published as: CN107022866A

Abstract

The invention discloses a washing and drying integrated machine and a control method thereof, wherein the washing and drying integrated machine comprises: the method comprises the following steps: a barrel body; the drying system comprises a compressor, a condenser, an evaporator and a throttling device, wherein the condenser and the evaporator are arranged in the air channel, and the condenser is positioned at the downstream of the evaporator in the airflow direction of the air channel; the double-pipe condenser comprises a condensing part and a heat exchange part which are suitable for mutual heat exchange, and the condensing part is connected with the condenser in parallel; the flow direction control unit is respectively connected with the compressor, the condenser and the condensing part and is used for enabling the compressor to be connected with the condenser and/or the condensing part in a switchable manner; the circulating pump, the heat exchange part and the barrel body are connected in series to form a water circulation loop. According to the washing and drying integrated machine, the washing water which circularly flows can be heated by using the high-temperature refrigerant in the drying system, so that the cleaning effect is improved.

Description

Washing and drying integrated machine and control method thereof

Technical Field

The invention relates to the technical field of household appliances, in particular to a washing and drying integrated machine and a control method thereof.

Background

The washing and drying integrated machine in the related technology is mostly of an electric heating type, the washing or drying function is completed by heating water or air through a heating pipe, and the heating pipe is used for heating, so that the energy consumption is high; in the related art, there are washing and drying integrated machines that use a heat pump system to dry clothes, but the manner of heating the washing water is still heating by a heating pipe, and the problem of high energy consumption cannot be solved. No matter the washing and drying integrated machine is an electric heating type washing and drying integrated machine or a heat pump type washing and drying integrated machine, the washing water is heated in a one-stage mode in the washing process, the washing water in the whole washing process can not reach the set water temperature, and the washing effect is limited due to the fact that the water temperature is reduced in the later washing stage.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the washing and drying integrated machine which can promote the cleaning effect and save energy consumption.

The invention also provides a control method of the washing and drying integrated machine.

A washer dryer machine according to a first aspect of the invention comprises: a barrel body; the two ends of the air duct are respectively communicated with the inner space of the barrel body to form a circulating air path, and a fan is arranged in the air duct and used for driving the air in the air duct and the air in the barrel body to circularly flow; the drying system comprises a compressor, a condenser, an evaporator and a throttling device, wherein the compressor, the condenser, the throttling device and the evaporator are connected in series to form a heat exchange loop, the condenser and the evaporator are arranged in the air duct, and the condenser is positioned at the downstream of the evaporator in the airflow direction of the air duct; the double-pipe condenser comprises a condensing part and a heat exchange part which are suitable for exchanging heat with each other, and the condensing part is connected with the condenser in parallel; the flow direction control unit is respectively connected with the compressor, the condenser and the condensing part and is used for enabling the compressor to be connected with the condenser and/or the condensing part in a switchable manner; and the circulating pump, the heat exchanging part and the barrel body are connected in series to form a water circulation loop.

According to the washing and drying integrated machine, the casing condenser is arranged, the refrigerant flowing out of the compressor can enter the condensing part in the casing condenser, and the washing water in the barrel can enter the heat exchanging part in the casing condenser under the action of the circulating pump, so that the refrigerant and the washing water can exchange heat through the casing condenser, the washing water is heated, and the cleaning effect is improved; meanwhile, the air in the air channel can be heated and condensed, and necessary heat conditions are provided for drying clothes. In addition, the high-temperature refrigerant in the drying system is used for heating the washing water which circularly flows, compared with the method of adopting electric heating in the related technology, the energy consumption is greatly reduced, and the resource utilization rate of the drying system is maximized.

In some embodiments, the double pipe condenser is provided with a water supply port for connecting a water source, and the water supply port is suitable for being communicated with the heat exchanging part.

Further, the water supply port is connected with a water inlet valve.

According to the control method of the washing and drying integrated machine, the control method comprises the following steps:

introducing a predetermined amount of water into the barrel body; after the water level in the barrel body reaches the water inlet level, entering a washing program, enabling the compressor to be connected with the casing condenser, and starting the circulating pump and the compressor to heat water in the barrel body; and finishing the washing when the washing program reaches the finishing condition.

According to the control method of the washing and drying integrated machine, the circulating pump is started after the water level in the barrel body reaches the water inlet level, the compressor is communicated with the sleeve condenser, and therefore the washing water flowing circularly can be heated, the washing effect is promoted, and the energy consumption is low.

In some embodiments, the control method further comprises: detecting the water temperature in the tub during a washing process, and stopping the circulation pump if the water temperature in the tub is higher than an upper temperature threshold; and starting the circulating pump if the temperature of water in the barrel body is lower than a lower temperature threshold value, wherein the lower temperature threshold value is lower than the upper temperature threshold value.

In some embodiments, the compressor is started and stopped synchronously or asynchronously with the circulation pump.

In some embodiments, the compressor is started a first predetermined time after the circulation pump is started and stopped a second predetermined time before the circulation pump is stopped.

In some embodiments, a water supply port for connecting a water source is provided on the double pipe condenser, the water supply port is adapted to communicate with the heat exchanging part, and the control method further includes: and introducing a preset amount of water into the barrel body through the water supply port, and starting the compressor and connecting the compressor with the casing pipe condenser in the process of supplying water into the barrel body through the water supply port.

In some embodiments, the control method further comprises: and starting the circulating pump in the process of supplying water into the barrel body through the water supply port.

In some embodiments, the control method further comprises: draining water in the barrel body after the washing procedure is finished, and then dehydrating; and after the dehydration is finished, connecting the compressor with the condenser and starting the fan and the compressor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a washer dryer according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method of the washing and drying all-in-one machine according to the embodiment of the invention.

Reference numerals:

the washing and drying integrated machine 100 is provided with a washing and drying integrated machine,

a barrel body 1, a water inlet a, a water outlet b,

an air duct 2, a fan 21, a lint filter 22,

the drying system 3, the compressor 31, the condenser 32, the throttling device 33, the evaporator 34, the gas-liquid separator 35,

a water inlet valve 41, a double pipe condenser 42, a condensing part 421, a heat exchanging part 422, a water supply port c,

the flow direction control unit 5, the first solenoid valve 51, the second solenoid valve 52,

a first check valve 61, a second check valve 62,

a temperature sensor 7 and a circulating pump 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring now to fig. 1 and 2, a washer dryer 100 according to an embodiment of the first aspect of the present invention will be described.

As shown in fig. 1, a washing and drying machine 100 according to an embodiment of the first aspect of the present invention includes: the drying device comprises a barrel body 1, an air duct 2, a drying system 3, a casing condenser 42, a flow direction control unit 5 and a circulating pump 8.

Specifically, the barrel body 1 is provided with a water inlet a and a water outlet b; water flows into the tub 1 from the water inlet a for washing laundry, and then is discharged through the water outlet b.

Two ends of the air duct 2 are respectively communicated with the inner space of the barrel body 1, the air duct 2 and the inner space of the barrel body 1 form a circulating air path, a fan 21 is arranged in the air duct 2, and the fan 21 is used for driving air in the air duct 2 and the barrel body 1 to circularly flow; for drying the laundry within the tub 1.

The drying system 3 includes a compressor 31, a condenser 32, an evaporator 34, and a throttle device 33, the compressor 31, the condenser 32, the throttle device 33, the evaporator 34, and the compressor 31 are sequentially connected in series to form a loop, the condenser 32 and the evaporator 34 are both disposed in the air duct 2, and the condenser 32 is located downstream of the evaporator 34 in the airflow direction of the air duct 2. Under the driving of the fan 21, the wet air in the barrel body 1 is cooled, condensed and dehumidified by the evaporator 34, and then heated and warmed by the condenser 32, and the obtained high-temperature dry air enters the barrel body 1 again for heating and drying clothes.

The double pipe condenser 42 includes a condensing portion 421 and a heat exchanging portion 422 adapted to exchange heat with each other, the condensing portion 421 being connected in parallel with the condenser 32; when the high-temperature and high-pressure refrigerant in the compressor 31 flows to the condensing portion 421 of the double pipe condenser 42, the refrigerant may be used to heat a fluid, such as washing water, flowing in the heat exchanging portion 422.

The flow direction control unit 5 is respectively connected with the compressor 31, the condenser 32 and the condensing part 421, and the flow direction control unit 5 is used for making the compressor 31 switchably connected with the condenser 32 and/or the condensing part 421; that is, the flow direction control unit 5 may control the compressor 31 to communicate with only the condensing portion 421, the flow direction control unit 5 may control the compressor 31 to communicate with only the condenser 32, and the flow direction control unit 5 may control the compressor 31 to communicate with both the condensing portion 421 and the condenser 32.

The circulating pump 8, the heat exchange part 422 and the tub body 1 are connected in series to form a water circulation loop, and the circulating pump 8 is used for driving washing water to circularly flow along the water circulation loop. Therefore, the water in the barrel body 1 can circulate through the heat exchange part 422 of the sleeve condenser 42, and the washing water can be circularly heated by the refrigerant flowing through the condensation part 421, so that hot water washing is realized, and the cleaning degree is improved.

According to the washing and drying integrated machine 100 provided by the embodiment of the invention, by arranging the casing condenser 42, the refrigerant flowing out of the compressor 31 can enter the condensing part 421 in the casing condenser 42, and the washing water in the barrel body 1 can enter the heat exchanging part 422 in the casing condenser 42 under the action of the circulating pump 8, so that the refrigerant and the washing water can exchange heat through the casing condenser 42, the washing water is heated, and the washing effect is improved; meanwhile, the air in the air duct 2 can be heated and condensed, so that necessary heat conditions are provided for drying clothes. In addition, the high-temperature refrigerant in the drying system 3 is used for heating the circularly flowing washing water, compared with the method of adopting electric heating in the related technology, the energy consumption is greatly reduced, and the resource utilization rate of the drying system 3 is maximized.

In some embodiments, as shown in fig. 1, the casing condenser 42 is provided with a water supply port c for connecting a water source, and the water supply port c is adapted to communicate with the heat exchanging part 422. That is, when water is supplied into the tub 1 through the water supply port c, the water flows into the tub 1 after passing through the heat exchanging part 422. In this way, during the water intake process, the compressor 31 may be started to make the refrigerant flow to the condensing portion 421 of the double pipe condenser 42 for heating the intake water flowing through the heat exchanging portion 422. That is, the washing and drying all-in-one machine 100 according to the embodiment of the present invention may not only heat the circularly flowing washing water, but also directly heat the incoming water, thereby improving the heating efficiency, so that the water temperature in the tub 1 may rapidly reach a predetermined temperature, and further improving the washing effect.

Preferably, as shown in fig. 1, a water inlet valve 41 may be connected to the water supply port c. Whether the water is injected into the barrel body 1 or not can be controlled through the water inlet valve 41, so that the water inlet can be conveniently controlled.

In some embodiments, the flow direction control unit 5 may include: a first solenoid valve 51 and a second solenoid valve 52, the first solenoid valve 51 being connected in series between the compressor 31 and the double pipe condenser 42; the first electromagnetic valve 51 is used for controlling the on-off between the compressor 31 and the condensing part 421 of the double pipe condenser 42; the second solenoid valve 52 is connected in series between the compressor 31 and the condenser 32, and the second solenoid valve 52 is used for controlling the on-off between the compressor 31 and the condenser 32. Preferably, the first solenoid valve 51 and the second solenoid valve 52 are both electronic expansion valves. The electronic expansion valve can adjust the flow of the refrigerant, so that the temperature of the heating water and the heating air is adjusted, and the applicability and the flexibility of heating are improved.

Referring to fig. 1, in the washing mode, the water inlet valve 41 is opened to start water inlet, and when the water level in the tub 1 reaches a set level, the water inlet valve 41 is closed. The first solenoid valve 51 is opened, the second solenoid valve 52 is closed, the compressor 31 is operated, and the casing condenser 42 gradually heats the washing water until the set water temperature is reached by the circulation pump 8, and the compressor 31 is stopped. At this time, the process of heating the washing water and the washing action may be simultaneously performed.

During the dry clothing, first solenoid valve 51 is closed, second solenoid valve 52 opens, compressor 31 work, condenser 32 heats the air, under fan 21's effect, in the hot-air drum 1, carries out heat and moisture exchange with wet clothing, the heat of giving off, takes away moisture, the air of high humidity is cooled down and the vapor condensation is appeared in evaporimeter 34, humidity in the air reduces, passes through condenser 32 with the air of low temperature low humidity again and heats, so circulation is reciprocal, reaches the effect of dry clothing. The drying is finished and the compressor 31 stops working.

In some embodiments, since two ends of the double pipe condenser 42 (the condensing portion 421) are connected in parallel with two ends of the condenser 32, when the refrigerant in the condenser 32 flows to the throttling device 33, the refrigerant may flow toward the double pipe condenser 42, and therefore, in order to prevent the refrigerant in the condenser 32 from flowing to the double pipe condenser 42, preferably, the first check valve 61 may be connected in series between the double pipe condenser 42 and the throttling device 33, so that the refrigerant flows only in a direction of the double pipe condenser 42 toward the throttling device 33. Similarly, to prevent the refrigerant in the double pipe condenser 42 from flowing to the condenser 32, a second check valve 62 may be connected in series between the condenser 32 and the throttling device 33 to ensure that the refrigerant flows only along the direction from the condenser 32 to the throttling device 33.

Preferably, the throttling device 33 may be a capillary tube or an electronic expansion valve. Therefore, the structure of the throttling device 33 can be simplified and the cost can be reduced on the premise of achieving the throttling effect.

Preferably, a gas-liquid separator 35 is connected in series between the evaporator 34 and the compressor 31. Therefore, the liquid can be prevented from entering the compressor 31 to influence the performance of the compressor 31, the safe operation of the compressor 31 can be ensured, and the service life is prolonged.

Preferably, a flock filter 22 is arranged in the air duct 2, and the flock filter 22 is used for filtering flock in the air of the air duct 2, so that the adsorption of the flock on the evaporator 34 and the condenser 32 is reduced, and the heat exchange effect of the evaporator 34 and the condenser 32 is prevented from being influenced by the flock.

According to the control method of the washing and drying all-in-one machine 100 of the present invention, the washing and drying all-in-one machine 100 is the washing and drying all-in-one machine 100 according to the above first aspect of the present invention, the control method includes:

introducing a predetermined amount of water into the barrel body 1; after the water level in the tub 1 reaches the inlet water level, a washing procedure is performed and the compressor 31 is connected to the casing condenser 42, the circulation pump 8 and the compressor 31 are started to heat the water in the tub 1; and finishing the washing when the washing program reaches the finishing condition.

According to the control method of the washing and drying integrated machine 100, after the water level in the barrel body 1 reaches the water inlet level, the circulating pump 8 is started to communicate the compressor 31 and the casing condenser 42, so that the washing water which circularly flows can be heated, the cleaning effect is promoted, and the energy consumption is low.

Further, the control method of the washing and drying all-in-one machine 100 further includes:

in the washing procedure, the water temperature in the tub 1 is detected, and the circulation pump 8 is stopped if the water temperature in the tub 1 is higher than the upper temperature threshold; at this time, since the circulating pump 8 does not provide power, the water in the tub 1 does not circulate along the water circulation loop any more, and the washing water in the tub 1 does not flow to the casing condenser 42 any more, that is, the refrigerant can not heat the washing water through the casing condenser 42 any more, thereby preventing the washing water from being excessively high in temperature.

The circulation pump 8 is activated if the temperature of the water inside the tub 1 is lower than a lower temperature threshold, which is lower than an upper temperature threshold. Thus, when the temperature of the water in the tub 1 is lower than the lower temperature threshold, the circulation pump 8 is re-started, so that the washing water in the tub 1 is re-circulated to heat the washing water by the casing condenser 42, thereby preventing the temperature of the water in the tub 1 from being too low. Accordingly, the temperature inside the tub 1 can be always maintained between the upper temperature threshold and the lower temperature threshold, that is, at a temperature near the set washing temperature, thereby maximizing the washing effect and saving more energy.

Preferably, the compressor 31 is started or stopped synchronously or asynchronously with the circulation pump 8. That is, the compressor 31 and the circulation pump 8 may be synchronously started at the same time, and the compressor 31 and the circulation pump 8 may be started in an asynchronous manner. Therefore, the device can be flexibly set according to actual requirements.

In some embodiments, the compressor 31 is started a first predetermined time after the circulation pump 8 is started and the compressor 31 is stopped a second predetermined time before the circulation pump 8 is stopped. That is, when the compressor 31 and the circulation pump 8 are started, the circulation pump 8 is started first, and after a first predetermined time, the compressor 31 is started; when the compressor 31 and the circulation pump 8 are stopped, the compressor 31 is first turned off, and after a second predetermined time, the circulation pump 8 is stopped. Therefore, the washing water in the water circulation loop can be ensured to flow circularly all the time in the running process of the compressor 31, and the refrigerant flowing out of the compressor 31 can be ensured to effectively heat the washing water through the double-pipe condenser 42.

In some embodiments, the casing condenser 42 may be provided with a water supply port c for connecting a water source, the water supply port c being adapted to communicate with the heat exchanging part 422, and the control method further includes: a predetermined amount of water is introduced into the tub 1 through the water supply port c, and in the course of supplying water into the tub 1 through the water supply port c, the compressor 31 is started and the compressor 31 is connected to the casing condenser 42. Thus, the inflow water flowing into the casing condenser 42 can be heated in the inflow process, whereby the temperature of the water in the tub 1 can be more quickly brought to a predetermined temperature, and the washing effect can be promoted.

Advantageously, the control method further comprises: the circulation pump 8 is started in the course of supplying water into the tub 1 through the water supply port c. So that the water in the tub 1 circularly flows along the water circulation circuit to heat the washing water through the casing condenser 42, whereby the temperature of the water in the tub 1 can be more quickly brought to a predetermined temperature than when the circulation pump 8 is re-started to heat the washing water after the water inflow is completed.

In some embodiments, the control method may further include: draining water in the barrel body 1 after the washing program is finished and then dehydrating; after the dehydration is completed, the compressor 31 is connected to the condenser 32 and the fan 21 and the compressor 31 are started. So that the washing and drying all-in-one machine 100 enters a drying mode for drying the laundry.

In the following, a control method of the washing and drying all-in-one machine 100 according to a specific embodiment of the present invention is described, wherein a liquid level sensor and a temperature sensor 7 are arranged in the tub 1 of the washing and drying all-in-one machine 100, the liquid level sensor is used for detecting a water level in the tub 1, and the temperature sensor 7 is used for detecting a temperature of water in the tub 1. The control method comprises the following steps:

in the washing mode, a water level needing water inflow is set firstly, then water inflow is carried out, and washing is started after the water inflow is finished. When the motor drives the drum to rotate at a low speed, the circulating pump 8 is started, and the washing water circulates in the water circulation loop under the action of the circulating pump 8. At this time, the compressor 31 is turned on, the first solenoid valve 51 (electronic expansion valve) is turned on, the second solenoid valve 52 (electronic expansion valve) is kept closed, and the high-temperature and high-pressure refrigerant flowing through the double pipe condenser 42 exchanges heat with the circulating water, so that the circulating water is continuously heated to the set water temperature. When the water temperature in the tub 1 reaches the upper threshold Toff of the set temperature, the compressor 31 is stopped and the circulation pump 8 is closed. In the continuous washing process, when the temperature of the water in the tub 1 drops to the lower temperature threshold Ton, the circulation pump 8 is turned on, and the compressor 31 is turned on. During this process, the second solenoid valve 52 is kept closed all the time. When the washing time is up, the procedure enters the processes of water drainage and dehydration.

According to the control method of the washing and drying all-in-one machine 100, the temperature of the washing water in the barrel body 1 is controlled by monitoring the water temperature in the barrel body 1 and setting the temperature threshold value for starting and stopping the compressor 31, so that the function of heating the washing water by the drying system 3 is realized, compared with the traditional electric heating mode of the washing and drying all-in-one machine 100, the washing and drying all-in-one machine is more energy-saving, the water temperature in the whole washing process is kept near the set temperature, and the cleaning effect is promoted.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A washing and drying integrated machine is characterized by comprising:

a barrel body;

the two ends of the air duct are respectively communicated with the inner space of the barrel body to form a circulating air path, and a fan is arranged in the air duct and used for driving the air in the air duct and the air in the barrel body to circularly flow;

the drying system comprises a compressor, a condenser, an evaporator and a throttling device, wherein the compressor, the condenser, the throttling device and the evaporator are connected in series to form a heat exchange loop, the condenser and the evaporator are arranged in the air duct, and the condenser is positioned at the downstream of the evaporator in the airflow direction of the air duct;

the double-pipe condenser comprises a condensing part and a heat exchange part which are suitable for exchanging heat with each other, and the condensing part is connected with the condenser in parallel;

the flow direction control unit is respectively connected with the compressor, the condenser and the condensing part and is used for enabling the compressor to be connected with the condenser and/or the condensing part in a switchable manner;

the circulating pump, the heat exchanging part and the barrel body are connected in series to form a water circulating loop;

the compressor and the circulating pump are started and stopped asynchronously, the compressor is started at a first preset time after the circulating pump is started, and the compressor is stopped at a second preset time before the circulating pump is stopped;

the casing pipe condenser is provided with a water supply port for connecting a water source, the water supply port is suitable for being communicated with the heat exchanging part,

starting the compressor and connecting the compressor with the double pipe condenser in the process of supplying water into the barrel body through the water supply port,

and the circulation pump is started in the process of supplying water into the barrel body through the water supply port.

2. The washing and drying integrated machine according to claim 1, wherein the casing condenser is provided with a water supply port for connecting a water source, and the water supply port is suitable for being communicated with the heat exchanging part.

3. The washing and drying integrated machine according to claim 2, wherein the water supply port is connected with a water inlet valve.

4. A control method of a washing and drying all-in-one machine, wherein the washing and drying all-in-one machine is the washing and drying all-in-one machine according to any one of claims 1-3, and the control method comprises the following steps:

introducing a predetermined amount of water into the barrel body;

after the water level in the barrel body reaches the water inlet level, entering a washing program, enabling the compressor to be connected with the casing condenser, and starting the circulating pump and the compressor to heat water in the barrel body;

and finishing the washing when the washing program reaches the finishing condition.

5. The washing and drying integrated machine control method according to claim 4, further comprising:

in the washing process, the temperature of water in the tub is detected,

stopping the circulation pump if the temperature of the water in the tub is above an upper temperature threshold;

the circulation pump is started if the temperature of the water in the tub is lower than a lower temperature threshold,

wherein the lower temperature threshold is lower than the upper temperature threshold.

6. The washing and drying integrated machine control method according to any one of claims 4-5, characterized by further comprising:

draining water in the barrel body after the washing procedure is finished, and then dehydrating;

and after the dehydration is finished, connecting the compressor with the condenser and starting the fan and the compressor.