CN111778689A

CN111778689A - Drying device, washing machine and drying method

Info

Publication number: CN111778689A
Application number: CN202010683112.7A
Authority: CN
Inventors: 刘剑; 龙斌华; 刘伟德; 陈坦; 赵凯
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-10-16

Abstract

The invention provides a drying device, a washing machine and a drying method, wherein the drying device is used for drying clothes in a barrel, and comprises: the air duct shell is provided with an air inlet, an air return inlet and a heating air duct communicated with the air inlet and the air return inlet, so that air heated by the heating air duct enters the barrel body through the air inlet; the temperature detection piece is arranged on one side of the air duct shell close to the air return inlet so as to detect the temperature of the air entering the air return inlet from the barrel through the temperature detection piece; the weight detection piece is connected with the barrel body to detect the weight of the barrel body through the weight detection piece after the temperature detected by the temperature detection piece is greater than a preset temperature value. The technical problem that whether the clothes in the drum are dried or not can not be accurately judged by a drying device in the prior art is solved.

Description

Drying device, washing machine and drying method

Technical Field

The invention relates to the technical field of drying and washing machines, in particular to a drying device, a washing machine and a drying method.

Background

At present, in the continuous development process of the market of washing machines, the demand of washing and drying integrated machines is greatly increased, and especially the demand of the washing and drying integrated machines of an electric heating type is larger. The user can realize two operations of doing washing and stoving through using the washing and drying all-in-one machine, does not need the user to carry out the sunning, has improved user's convenience greatly. In the prior art, a drying judgment method (the drying judgment method refers to a method for judging whether drying of clothes in a cylinder is finished) generally adopted by a washing and drying integrated machine has temperature difference, and the drying is judged by combining temperature and humidity.

However, for the temperature difference dry judgment, temperature measurement is generally performed by a temperature sensing bulb, however, the temperature sensing bulb can only measure the temperature of a single point, and the temperature measured by the temperature sensing bulb cannot represent the temperature distribution of the whole flow field, so that the condition of uneven load drying often occurs, and therefore, the dry judgment cannot be performed effectively. For humidity detection, the humidity often causes structural instability due to the influence of temperature, the service life of the humidity sensor is short, the price is expensive, the service performance of the humidity sensor is gradually degraded along with the prolonging of the service life, the humidity sensor needs to be checked or replaced regularly, the judgment result is inaccurate, and therefore effective judgment can not be performed.

Disclosure of Invention

The invention mainly aims to provide a drying device, a washing machine and a drying method, and aims to solve the technical problem that the drying device in the prior art cannot accurately judge whether clothes in a cylinder are dried or not.

In order to achieve the above object, according to one aspect of the present invention, there is provided a drying apparatus for drying laundry in a drum, the drying apparatus including: the air duct shell is provided with an air inlet, an air return inlet and a heating air duct communicated with the air inlet and the air return inlet, so that air heated by the heating air duct enters the barrel body through the air inlet; the temperature detection piece is arranged on one side of the air duct shell close to the air return inlet so as to detect the temperature of the air entering the air return inlet from the barrel through the temperature detection piece; the weight detection piece is connected with the barrel body to detect the weight of the barrel body through the weight detection piece after the temperature detected by the temperature detection piece is greater than a preset temperature value.

Furthermore, the heating air duct comprises a condensation section, a heating section and an air inlet section which are connected in sequence, wherein an air return opening is formed at one end, away from the heating section, of the condensation section, and an air inlet is formed at one end, away from the heating section, of the air inlet section.

Further, the drying device further comprises: and the heater is arranged at the heating section so as to heat the air in the heating section through the heater.

Further, the drying device further comprises: the condenser pipe, at least part setting of condenser pipe is in the condensation segment, and the condenser pipe is used for letting in the condensate to carry out the condensation through the air of condenser pipe in to the condensation segment.

According to another aspect of the present invention, there is provided a washing machine including a drum and a drying device provided on the drum, the drying device being the above-provided drying device.

Further, the washing machine further includes: the base, the barrel sets up on the base, and drying device's weight detection spare is located between base and the barrel.

Further, the washing machine further includes: the drying device comprises a base and a damper, wherein one end of the damper is used for being connected with the base, the other end of the damper is used for being connected with the barrel, and a weight detection piece of the drying device is located between the base and the damper.

Furthermore, the washing machine also comprises a base, a frame and a hanging spring, wherein the base is arranged at the bottom of the frame, the barrel is arranged on the base, one end of the hanging spring is used for being connected with the frame, and the other end of the hanging spring is used for being connected with the barrel; the weight detecting part of the drying device is positioned between the hanging spring and the cylinder body; or the weight detecting part of the drying device is positioned between the frame and the hanging spring.

According to another aspect of the present invention, there is provided a drying method adapted to the above-provided drying apparatus, the drying method including: detecting the temperature of air at an air return port of the drying device, and comparing the detected temperature value with a preset temperature value; and according to the comparison result of the detected temperature value and the preset temperature value, carrying out weight detection on the barrel, and judging whether drying is finished or not according to the weight detection result.

Further, the method for controlling the weight detection of the weight detection piece of the drying device comprises the following steps: when the detected temperature value is greater than the preset temperature value, carrying out weight detection on the barrel of the washing machine; and when the detected temperature value is smaller than the preset temperature value, the air temperature at the air return inlet of the drying device is continuously detected.

Further, the method for judging whether drying is finished according to the weight detection result comprises the following steps: weighing the barrel at preset intervals; and comparing the mass difference value of the two adjacent weighing results with a preset mass difference value, and judging whether the drying is finished according to the comparison result of the mass difference values.

Further, the method for judging whether drying is finished according to the comparison result of the quality difference comprises the following steps: when the mass difference value of the two adjacent weighing results is smaller than the preset mass difference value, the drying device finishes drying, and the drying device is controlled to stop drying operation; and when the mass difference value of the two adjacent weighing results is greater than the preset mass difference value, the drying device does not finish drying, and the drying device is continuously utilized for drying operation.

By applying the technical scheme of the invention, the clothes in the barrel are heated and dried by the air heated by the heating air duct, the air temperature at the air return port of the air duct shell is detected by the temperature detection piece in the drying process, the weight of the barrel is detected by the weight detection piece when the temperature detected by the temperature detection piece is higher than the preset temperature value, and whether the clothes in the barrel are dried or not is judged according to the weight result of the barrel detected by the weight detection piece. By adopting the temperature detection piece and the weight detection piece, the condition that the temperature difference judgment is not accurate independently in temperature detection can be avoided, and the accuracy of the judgment (the judgment of the dryness is to judge whether the clothes in the drum are dried or not) is improved. Therefore, the technical problem that whether the clothes in the drum are dried or not cannot be accurately judged by the drying device in the prior art can be solved through the technical scheme provided by the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 illustrates a schematic structural view of a drying apparatus provided according to an embodiment of the present invention;

FIG. 2 illustrates a schematic structural view of a mount and damper provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural view illustrating a drying apparatus provided in accordance with an embodiment of the present invention, the drying apparatus being disposed on a base;

fig. 4 is a schematic structural view illustrating another angle at which a drying apparatus provided in accordance with an embodiment of the present invention is disposed on a base;

fig. 5 is a schematic structural view illustrating a drying apparatus provided according to an embodiment of the present invention provided on a frame;

FIG. 6 illustrates the temperature sensed by a return air bulb provided in accordance with an embodiment of the present invention;

fig. 7 shows a flowchart of a drying method provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a barrel; 20. an air duct housing; 21. an air inlet; 22. an air return opening; 23. a condensing section; 24. a heating section; 25. an air inlet section; 30. a temperature detection member; 40. a weight detecting member; 50. a heater; 60. a condenser tube; 70. a base; 80. a damper; 90. a frame; 100. hanging a spring; 110. an air tube; 120. a centrifugal fan; 130. an air inlet temperature sensing bulb.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, an embodiment of the present invention provides a drying device, which is used for drying clothes in a drum 10, and the drying device is disposed on the drum 10. The drying device comprises an air duct shell 20, a temperature detection piece 30 and a weight detection piece 40, wherein the air duct shell 20 is provided with an air inlet 21, a return air inlet 22 and a heating air duct communicated with the air inlet 21 and the return air inlet 22, so that air heated by the heating air duct enters the barrel 10 through the air inlet 21. The temperature detecting element 30 (also called a return air temperature sensing bulb) is disposed on one side of the air duct casing 20 close to the return air inlet 22, so as to detect the temperature of the air entering the return air inlet 22 from the barrel 10 through the temperature detecting element 30, and the temperature detecting element 30 can monitor the temperature at the return air inlet 22 in real time. The weight detecting member 40 is connected to the cylinder 10 to detect the weight of the cylinder 10 through the weight detecting member 40 after the temperature detected by the temperature detecting member 30 is greater than a preset temperature value, where the weight detecting member 40 may be a weight sensor, and the weight sensor may monitor the weight of the load in real time.

Adopt the drying device that this embodiment provided, the air after heating through the heating wind channel heats the clothing of barrel 10 and dries, in the drying process, earlier detect the air temperature of the return air inlet 22 department of wind channel casing 20 through temperature detection spare 30, and compare the temperature value that detects with the preset temperature value in the accumulator, after the temperature that temperature detection spare 30 detected is greater than the preset temperature value, the weight of barrel 10 is detected through weight detection spare 40 to judge whether the clothing in the barrel 10 is accomplished to dry according to the weight result of barrel 10 that weight detection spare 40 detected. In this embodiment, the temperature detection part 30 is combined with the weight detection part 40 to detect the condition of drying completion, so that the condition that temperature detection alone does not accurately determine the temperature difference can be avoided, and multiple times of bearing detection by the weight detection part 40 can improve the accuracy of determining the dryness (the dryness determination refers to determining whether the clothes in the drum 10 are dried or not). Therefore, through the drying device provided by this embodiment, the technical problem that the drying device in the prior art cannot accurately judge whether the clothes in the drum 10 are dried can be solved.

Specifically, through the drying device that this embodiment provided, can realize the accurate control to the drying process, avoid by the inhomogeneous, the drying time scheduling problem of a long time of drying of single temperature monitoring, can effectively reduce the cost of product simultaneously, avoided drying time for a long time, the extravagant problem of the energy can fundamentally guarantee that the clothing can evenly dry, especially can ensure the degree of consistency of drying under the full load condition of large capacity.

In this embodiment, in the pre-drying stage, a temperature sensor (i.e. the temperature detection element 30) is used to monitor the pre-drying process until a preset temperature range is reached; and then, entering a drying stage, weighing the drying process by using a weight sensor, stopping drying when the mass difference of the two times is smaller than a preset mass difference range, and drying. The drying system can effectively improve the drying uniformity of the load, realizes the accurate drying judgment problem in the drying process, improves the drying efficiency, avoids the energy waste caused by long drying time, reduces the product cost and improves the use experience of users.

In this embodiment, the heating air duct includes a condensation section 23, a heating section 24 and an air intake section 25 that are connected in sequence, and an air return opening 22 is formed at one end of the condensation section 23 far away from the heating section 24, and an air intake opening 21 is formed at one end of the air intake section 25 far away from the heating section 24. With such a structure, the hot and humid air in the drum 10 (for a drum washing machine, the drum 10 refers to an inner drum) is cooled by the condensing section 23 to become cold and humid air, and then the cold and humid air is heated by the heating section 24 to become hot and dry air, and the hot and dry air enters the drum 10 through the air inlet 21 of the air inlet section 25, so as to dry the clothes in the drum 10.

Specifically, the drying device in this embodiment further includes a heater 50, and the heater 50 is disposed at the heating section 24 to heat the air in the heating section 24 through the heater 50.

In this embodiment, the drying device further includes a condensation duct 60, at least a portion of the condensation duct 60 is disposed in the condensation section 23, and the condensation duct 60 is used for introducing condensate to condense air in the condensation section 23 through the condensation duct 60.

With the drying device provided by this embodiment, after the laundry washing operation is finished, the load in the drum (the load here mainly refers to the laundry in the drum) is primarily weighed by the weighing device (i.e. the weight detecting member 40), and then the drying program is run. The damp and hot air in the inner drum is cooled by the water flowing out of the condensation pipe 60 in the condensation section 23 to become damp and cold air, then the damp and cold air is changed into dry and hot air under the action of the heater 50 of the heating section 24, and the dry and hot air enters the drum through the air inlet section 25 to dry the clothes.

An air inlet temperature sensing bulb 130 is arranged at the air inlet 21 of the air inlet section 25, and the air inlet temperature sensing bulb 130 is used for detecting the temperature of the air at the air inlet 21 and comparing the detected temperature value with the temperature value in the storage. A centrifugal fan 120 is further disposed in the duct housing 20 to provide a return air power via the centrifugal fan 120, and in particular, the centrifugal fan 120 is disposed at the junction of the condensing section 23 and the heating section 24.

Specifically, the drying device in this embodiment further includes an air tube 110, wherein one end of the air tube 110 is used for communicating with the outside air, and the other end of the air tube 110 extends into the heating air duct, so as to avoid the problem of unsafe caused by too large air pressure in the heating air duct through the air tube 110.

As shown in fig. 2 to 5, a second embodiment of the present invention provides a washing machine, which includes a drum 10 and a drying device, wherein the drying device is disposed on the drum 10, and the drying device is the drying device provided in the first embodiment.

Specifically, in one embodiment, the washing machine further includes a base 70, the drum 10 is disposed on the base 70, and the weight detecting member 40 of the drying device is located between the base 70 and the drum 10. With this arrangement, the load in the cylinder 10 can be easily detected by the weight detector 40.

Specifically, in another embodiment, the washing machine further includes a base 70 and a damper 80, one end of the damper 80 is used for being connected with the base 70, the other end of the damper 80 is used for being connected with the drum 10, and the weight detecting member 40 of the drying device is located between the base 70 and the damper 80. Specifically, the number and arrangement of the weight detecting members 40 may be selected according to the actual weighing accuracy requirement and the setting condition of the damper 80. In the present embodiment, there are a plurality of dampers 80, a plurality of weight detecting members 40 and a plurality of dampers 80, and each weight detecting member 40 is provided on a corresponding damper 80. By adopting the structure, the weighing accuracy can be improved conveniently, and whether the clothes in the barrel 10 are dried or not can be judged accurately.

Specifically, in another embodiment, the washing machine further includes a base 70, a frame 90, and a hanging spring 100, the base 70 is disposed at the bottom of the frame 90, the drum 10 is disposed on the base 70, one end of the hanging spring 100 is used for connecting with the frame 90, and the other end of the hanging spring 100 is used for connecting with the drum 10. The weight detecting member 40 of the drying apparatus may be positioned between the hanging spring 100 and the drum 10; alternatively, the weight detecting member 40 of the drying apparatus is positioned between the frame 90 and the hanging spring 100. By adopting the structural layout, the weighing accuracy can be improved conveniently, so that whether the clothes in the barrel 10 are dried or not can be judged accurately. Specifically, the number of the hanging springs 100 in the present embodiment is plural, the number of the weight detecting members 40 is also plural, the plurality of weight detecting members 40 are provided in one-to-one correspondence with the plurality of hanging springs 100, and each weight detecting member 40 is provided on the corresponding hanging spring 100.

As shown in fig. 7, another embodiment of the present invention provides a drying method, which is suitable for the drying apparatus provided above, the drying method includes detecting the temperature of the air at the air return opening 22 of the drying apparatus, and comparing the detected temperature value with a preset temperature value; and according to the comparison result of the detected temperature value and the preset temperature value, carrying out weight detection on the barrel body 10, and judging whether drying is finished or not according to the weight detection result. By adopting the drying method, the condition that drying is not thorough and uneven due to independent judgment of the temperature can be avoided, instability and unevenness caused by independent weighing judgment can also be avoided, and accurate judgment of the drying can be facilitated through the combination of temperature detection and weight detection so as to ensure the use experience of a user.

Specifically, the method for controlling the weight detecting member 40 of the drying device to detect the weight in this embodiment includes: when the detected temperature value is greater than the preset temperature value, carrying out weight detection on the barrel 10 of the washing machine; and when the detected temperature value is smaller than the preset temperature value, continuously detecting the air temperature at the air return opening 22 of the drying device.

In the drying process, the temperature monitored by the return air temperature sensing bulb is gradually increased, the temperature detected by the return air temperature sensing bulb (the temperature detected by the return air temperature sensing bulb is shown in figure 6) is mainly compared with the critical temperature Tc in the storage in the pre-drying stage, when the temperature detected by the return air temperature sensing bulb is more than or equal to Tc, the load in the roller is weighed in real time by using the weighing device, and whether the drying is finished or not is judged according to the weighing structure. Specifically, the abscissa axis T in fig. 6 represents the operating time, and the ordinate axis T in fig. 6 represents the corresponding temperature value.

In this embodiment, the method for determining whether to finish drying according to the weight detection result includes: weighing the cylinder 10 at preset intervals; and comparing the mass difference value of the two adjacent weighing results with a preset mass difference value, and judging whether the drying is finished according to the comparison result of the mass difference values.

Specifically, the method for determining whether to finish drying according to the comparison result of the mass difference in the embodiment includes: when the mass difference value of the two adjacent weighing results is smaller than the preset mass difference value, the drying device finishes drying, and the drying device is controlled to stop drying operation; and when the mass difference value of the two adjacent weighing results is greater than the preset mass difference value, the drying device does not finish drying, and the drying device is continuously utilized for drying operation. Specifically, when the weight of the current and the latter two times of weighing is less than Δ G, the drying device finishes drying, and the drying is finished.

In this embodiment, the specific program control and implementation are as follows:

firstly, when a drying program is just started, a weighing device (namely the weight detection part 40) is used for weighing the roller, the weight of the load in the roller is determined, then the dehydration and the balance of the load are carried out, and then the pre-drying stage is carried out.

And then entering a pre-drying stage. In the stage, the temperature Tn of the return air is monitored in real time through a return air temperature sensing bulb and is compared with the set reference temperature Tc in the storage, if Tn is larger than or equal to Tc, a dry judging stage is started, otherwise, three times of continuous temperature monitoring are carried out, and pre-drying is continued until the monitored temperature is larger than or equal to the set reference temperature.

Starting a weighing device, weighing the clothes in the drum at intervals of △ t, and weighing the difference G between the two weighing masses_m-G_m-1And when the mass difference is less than △ G, stopping drying, finishing the drying judgment, finishing the drying work, and otherwise, continuing the drying judgment work.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: whether the clothes are dried or not can be accurately judged, drying time and energy waste are reduced, effective drying rate and drying uniformity of loads are improved, cost and energy waste of the washing and drying integrated machine are reduced, and user experience is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Drying device, characterized in that it is used for drying the laundry inside a drum (10), and it comprises:

the air duct shell (20), the air duct shell (20) has an air inlet (21), an air return opening (22) and a heating air duct communicated with the air inlet (21) and the air return opening (22), so that the air heated by the heating air duct enters the cylinder (10) through the air inlet (21);

the temperature detection piece (30) is arranged on one side, close to the air return opening (22), of the air duct shell (20) and used for detecting the temperature of air entering the air return opening (22) from the barrel (10) through the temperature detection piece (30);

the weight detection piece (40) is connected with the barrel (10), so that after the temperature detected by the temperature detection piece (30) is greater than a preset temperature value, the weight of the barrel (10) is detected by the weight detection piece (40).

2. The drying device according to claim 1, wherein the heating air duct comprises a condensation section (23), a heating section (24) and an air intake section (25) connected in sequence, wherein one end of the condensation section (23) far away from the heating section (24) forms the air return opening (22), and one end of the air intake section (25) far away from the heating section (24) forms the air intake opening (21).

3. The drying apparatus as claimed in claim 2, further comprising:

a heater (50) disposed at the heating section (24) to heat air within the heating section (24) by the heater (50).

4. The drying apparatus as claimed in claim 2, further comprising:

the condensation pipe (60), at least part of the condensation pipe (60) is arranged in the condensation section (23), and the condensation pipe (60) is used for introducing condensate so as to condense the air in the condensation section (23) through the condensation pipe (60).

5. A washing machine, characterized in that it comprises a tub (10) and a drying device provided on said tub (10), said drying device being as claimed in any one of claims 1 to 4.

6. The washing machine as claimed in claim 5, further comprising:

the drying device comprises a base (70), wherein the barrel (10) is arranged on the base (70), and a weight detection piece (40) of the drying device is positioned between the base (70) and the barrel (10).

7. The washing machine as claimed in claim 5, further comprising:

base (70) and attenuator (80), the one end of attenuator (80) be used for with base (70) are connected, the other end of attenuator (80) be used for with barrel (10) are connected, drying device's weight detection spare (40) are located base (70) with between attenuator (80).

8. The washing machine according to claim 5, further comprising a base (70), a frame (90), and a hanging spring (100), wherein the base (70) is disposed at the bottom of the frame (90), the drum (10) is disposed on the base (70), one end of the hanging spring (100) is used for connecting with the frame (90), and the other end of the hanging spring (100) is used for connecting with the drum (10);

the weight detecting part (40) of the drying device is positioned between the hanging spring (100) and the barrel body (10);

or, the weight detecting member (40) of the drying device is positioned between the frame (90) and the hanging spring (100).

9. A drying method, characterized by being applied to the drying apparatus of any one of claims 1 to 4, the drying method comprising:

detecting the temperature of air at an air return port of the drying device, and comparing the detected temperature value with a preset temperature value;

and according to the comparison result of the detected temperature value and the preset temperature value, carrying out weight detection on the barrel, and judging whether drying is finished or not according to the weight detection result.

10. The drying method of claim 9, wherein the method of controlling the weight detecting member of the drying apparatus to perform the weight detection includes:

when the detected temperature value is greater than the preset temperature value, carrying out weight detection on the barrel of the washing machine;

and when the detected temperature value is smaller than the preset temperature value, the air temperature at the air return inlet of the drying device is continuously detected.

11. The drying method of claim 9, wherein the method of determining whether to finish drying according to the weight detection result comprises:

weighing the cylinder at preset intervals;

and comparing the mass difference value of the two adjacent weighing results with a preset mass difference value, and judging whether the drying is finished according to the comparison result of the mass difference values.

12. The drying method of claim 11, wherein the method of determining whether drying is completed according to the comparison result of the mass difference comprises:

when the mass difference value of the two adjacent weighing results is smaller than the preset mass difference value, the drying device finishes drying and controls the drying device to stop drying operation;

and when the mass difference value of the two adjacent weighing results is greater than the preset mass difference value, the drying device does not finish drying and continues to use the drying device for drying operation.