Washing machine control method and washing machine

Abstract

The invention discloses a control method of a washing machine and the washing machine. The control method of the washing machine comprises the steps that after washing of the washing machine is finished, residual water in the barrel assembly is heated to generate damp and hot gas; and the drainage structure is started to discharge the damp and hot gas in the barrel assembly to the outside. Residual water in the barrel assembly is heated to generate damp and hot gas after washing is finished, and the damp and hot gas in the barrel assembly is discharged to the outside by opening the drainage structure, so that the interior of the barrel assembly can be dried to avoid bacterium breeding or mildew in the barrel assembly, and the washing efficiency is improved. And emission of damp and hot gas in the barrel assembly is accelerated, the indoor humidity of a user is reduced, and the user experience is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and more specifically, relates to a control method for a washing machine and a washing machine. Background Art

[0002] Washing machines have become an indispensable clothing treatment device in people's daily lives. Taking traditional pulsator washing machines as an example: after the existing washing machine finishes washing clothes, the inner barrel and the outer barrel of the washing machine are respectively in a wet state. If no appropriate treatment measures are taken for a long time, bacteria or mildew are likely to grow in the inner barrel and the outer barrel, which will bring an unpleasant experience to users' washing. Therefore, drying and sterilizing the inside of the washing machine barrel to maintain a healthy washing environment is an urgent problem to be solved.

[0003] After the user finishes washing clothes with a pulsator washing machine, sometimes the user closes the top cover of the washing machine and dries the inner and outer barrels through a heating module installed at the bottom of the washing machine. The humid and hot gas generated by heating the residual water in the washing is generally discharged into the user's room by opening the top cover of the washing machine, resulting in an increase in the humidity of the user's room. Even if the drain valve is opened and the humid and hot gas is discharged into the sewer through the drain pipe to reduce the increase in the humidity of the user's room, since the drain valve can only be used to open and close the drain pipe and cannot provide power for the drain pipe to discharge the humid and hot gas, the discharge of the humid and hot gas by the drain pipe will be reduced.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a control method for a washing machine and a washing machine. After the washing is completed, the residual water in the barrel assembly is heated to generate humid and hot gas, and the drain structure is opened to discharge the humid and hot gas in the barrel assembly to the outside. While drying the inside of the barrel assembly to avoid the growth of bacteria or mildew inside the barrel assembly, the discharge of the humid and hot gas in the barrel assembly is accelerated and the humidity of the user's room can be reduced, improving the user experience.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a control method for a washing machine. The washing machine includes a barrel assembly and a drain structure for draining the barrel assembly. After the washing of the washing machine is completed, the residual water in the barrel assembly is heated to generate humid and hot gas; and the drain structure is opened to discharge the humid and hot gas in the barrel assembly to the outside.

[0008] Further, the washing machine includes a heating module. The drainage structure includes a drainage pipe and a drainage pump provided on the drainage pipe. After the washing is completed, the drainage pump is turned off, and the heating module is turned on. The hot air generated by the heating module enters the barrel assembly to heat the residual water, so that humid and hot gas is generated in the barrel assembly. When it is detected that the humidity in the barrel assembly reaches the first set humidity, the drainage pump is turned on, and the heating module is continuously turned on to discharge the humid and hot gas through the drainage pipe.

[0009] Further, the humid and hot gas generated by the heating module continuously enters the barrel assembly. As the humid and hot gas is continuously discharged through the drainage pipe, the humidity in the barrel assembly continuously decreases. When it is detected that the humidity in the barrel assembly is less than the second set humidity, the heating module is turned off, and the drainage pump is continuously turned on to continue discharging the humid and hot gas through the drainage pipe. The first set humidity is less than the second set humidity.

[0010] Further, as the drainage pipe continues to discharge the humid and hot gas, the temperature in the barrel assembly continuously drops. When it is detected that the temperature in the barrel assembly is less than the set temperature, the drainage pump is turned off to stop the drainage pipe from discharging the humid and hot gas.

[0011] Further, the barrel assembly includes an outer barrel and an inner barrel provided inside the outer barrel. A wave wheel is provided at the bottom of the outer barrel, and the inner barrel is mounted on the wave wheel and rotates with the wave wheel.

[0012] During the process when the heating module and the drainage pump are in the on state, the wave wheel is controlled to rotate at a set speed.

[0013] Further, after the washing is completed, the drainage pump is turned off, and after controlling the wave wheel to stop rotating, the heating module is turned on;

[0014] Before the drainage pump is turned on after the heating module is turned on, the wave wheel is controlled to rotate at a first set speed for heating the residual water in the inner and outer barrels;

[0015] After the drainage pump is turned on, the wave wheel is controlled to rotate at a second set speed greater than the first set speed for discharging the volatilized humid and hot gas in the inner and outer barrels while heating the residual water;

[0016] Before the drainage pump is turned off after the heating module is turned off, the wave wheel is controlled to rotate at a third set speed greater than the first set speed and less than the second set speed.

[0017] Further, the outer barrel is a washing barrel for holding clothes during clothes washing or rinsing, and the inner barrel is a washing barrel for holding clothes during clothes dehydration. The end of the washing of the washing machine is the end of the washing of the outer barrel, the end of the rinsing of the outer barrel, or the end of the dehydration of the inner barrel.

[0018] Further, after the drainage pump is turned off at the end of the washing, before the heating module is turned on, if it is detected that there are clothes in the barrel assembly, the clothes are taken out of the barrel assembly before the heating module is turned on.

[0019] Further, after the discharge of the hot and humid gas from the drain pipe during the last washing cycle of the washing machine is completed and before the next washing cycle starts, the washing machine fills the tub assembly with washing water and activates the heating module to heat the washing water. When the temperature of the washing water reaches the set value, the washing water is driven to rotate. After the rotating washing water washes and sterilizes the tub assembly at a high temperature, the drain pump is activated, and the washing water in the tub assembly is discharged through the drain pipe.

[0020] The present invention also provides a washing machine that adopts the control method of the washing machine provided by the above technical solution.

[0021] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] By heating the residual water in the tub assembly after the washing cycle to generate hot and humid gas and discharging the hot and humid gas in the tub assembly to the outside by activating the drainage structure, it is possible to dry the inside of the tub assembly to prevent the growth of bacteria or mildew inside the tub assembly, while accelerating the discharge of the hot and humid gas in the tub assembly and reducing the humidity in the user's room, thus enhancing the user experience.

[0023] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0025] Figure 1 is a flowchart of the control method of the washing machine provided by the embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of the pulsator washing machine provided by the embodiment of the present invention;

[0027] Figure 3 is a cross-sectional view of the pulsator washing machine provided by the embodiment of the present invention.

[0028] Reference numerals: 1 - cabinet; 2 - outer tub; 21 - pulsator; 211 - pulsator through-hole; 22 - outer tub through-hole; 3 - inner tub; 31 - insertion rib; 32 - inner tub through-hole; 4 - drain pipe; 41 - drain pump; 5 - installation housing; 51 - heating module; 6 - rotating shaft.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. Detailed Embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] As Figure 1 and Figure 2 shown, the present invention provides a control method for a washing machine. The washing machine includes a tub assembly and a drainage structure for draining the tub assembly. After the washing of the washing machine is completed, the residual water in the tub assembly is heated to generate humid heat gas; and the drainage structure is opened to discharge the humid heat gas in the tub assembly to the outside.

[0034] In the embodiments of the present invention, the drainage structure includes a drain pipe 4 and a drain pump 41 provided on the drain pipe 4. After the washing is completed, the drain pump 41 is turned on, and the drain pump 41 is used to extract the humid heat gas generated by heating the residual water in the tub assembly into the drain pipe 4. The humid heat gas is discharged into the outside (sewer) through the drain pipe 4. While achieving the drying of the inside of the tub assembly to avoid the growth of bacteria or mildew inside the tub assembly, it can accelerate the discharge of the humid heat gas in the tub assembly by the drain pipe 4 and reduce the humidity in the user's room, improving the user experience.

[0035] When the washing machine is a pulsator 21 washing machine and the tub assembly is an inner tub 3 and an outer tub 2, the structure of the pulsator 21 washing machine is as follows:

[0036] The pulsator 21 washing machine includes a housing 1, an outer tub 2, and an inner tub 3 disposed inside the outer tub 2. A pulsator 21 is provided at the bottom inside the inner tub 3. The inner tub 3 serves as a washing tub and a laundry tub, and the outer tub 2 serves as a water storage tub. A drain pipe 4 is provided on the outer tub 2, and the drain pipe 4 passes through the housing 1 and is connected to the sewer. A drain pump 41 is provided on the drain pipe 4 that passes through the housing 1; A heating module 51 is disposed inside the housing 1 and can supply hot air to the interiors of the outer tub 2 and the inner tub 3; or,

[0037] As Figure 3 shown, the pulsator 21 washing machine includes a housing 1, an outer tub 2, and an inner tub 3 disposed inside the outer tub 2. A pulsator 21 is provided at the bottom of the outer tub 2. A number of insertion ribs 31 are provided on the outer side of the bottom of the inner tub 3. An insertion slot is formed between two insertion ribs 31. The blades of the pulsator 21 are inserted into the insertion slot. An outer tub through-hole 22 is provided at the bottom of the outer tub 2. Inner tub through-holes 32 are provided on the bottom and the peripheral wall of the inner tub 3. The inner tub 3 communicates with the outer tub 2 through the inner tub through-holes 32. An installation housing 5 located inside the housing 1 is provided below the outer tub 2. A through-hole is provided at the top of the installation housing 5, which is not shown in the figure. The heating module 51 is disposed inside the installation housing 5. A motor is provided inside the housing 1. The motor shaft of the motor serves as a rotating shaft 6. The rotating shaft 6 sequentially passes through the installation housing 5, the bottom of the outer tub 2, and is connected to the pulsator 21. A drain pipe 4 is provided on the outer tub 2. The drain pipe 4 passes through the housing 1 and is connected to the sewer. A drain pump 41 is provided on the drain pipe 4 that passes through the housing 1;

[0038] The outer tub 2 serves as a washing tub for holding clothes during clothes washing or rinsing. The inner tub 3 serves as a washing tub for holding clothes during clothes dehydration. When the outer tub 2 washes or rinses clothes, the inner tub 3 is detached from the pulsator 21 of the outer tub 2. The water used for washing clothes or the water used for rinsing clothes is discharged into the sewer through the drain pipe 4 provided on the outer tub 2; When the inner tub 3 dehydrates clothes, the clothes are taken out of the outer tub 2, the inner tub 3 is installed on the pulsator 21 of the outer tub 2, and then the clothes are put into the inner tub 3. The washing water obtained after dehydrating the clothes is discharged into the sewer through the drain pipe 4 provided on the outer tub 2.

[0039] In the following embodiments, the outer tub 2 and the inner tub 3 are taken as washing tubs respectively as an example.

[0040] As Figure 1 shown, in the embodiment of the present invention, the washing machine includes a heating module 51. After the washing is completed, the drain pump 41 is turned off, and the heating module 51 is turned on. The hot air generated by the heating module 51 enters the tub assembly to heat the residual water, so that humid and hot gas is generated inside the tub assembly. When it is detected that the humidity inside the tub assembly reaches the first set humidity, the drain pump 41 is turned on, and the heating module 51 is continuously turned on. The humid and hot gas is discharged through the drain pipe 4.

[0041] In an embodiment of the present invention, the end of the washing as pointed out in this solution may be the end of washing of the outer tub 2, the end of rinsing of the outer tub 2, or the end of dehydration of the inner tub 3. The end of dehydration of the inner tub 3 may be the end of dehydration of the inner tub 3 after washing and rinsing of the outer tub 2, or the end of dehydration of the inner tub 3 with only dehydration of the inner tub 3 performed.

[0042] When the clothing is summer clothing and there are only sweat stains on the clothing, the outer tub 2 only needs to perform simple washing on the clothing, and there is no need for subsequent rinsing, dehydration, etc. of the clothing. Therefore, the end of the washing described is the end of washing of the outer tub 2, and the hot and humid gas discharged is the hot and humid gas inside the outer tub 2, and the detected humidity is the humidity inside the outer tub 2.

[0043] When the material of the clothing is cotton and linen, if the clothing is dehydrated, it will cause the clothing to wrinkle. Therefore, the outer tub 2 only needs to wash and rinse the clothing, and there is no need for subsequent dehydration of the clothing. Or, because the user has hand-washed the clothing in advance, the outer tub 2 only needs to rinse the clothing subsequently. Therefore, the end of the washing described is the end of rinsing of the outer tub 2, and the hot and humid gas discharged is the hot and humid gas inside the outer tub 2, and the detected humidity is the humidity inside the outer tub 2.

[0044] When normally washing clothes, the general process is to wash, rinse, and dehydrate the clothes in sequence. Therefore, the end of the washing described is the end of dehydration of the inner tub 3 for the clothes; the hot and humid gas discharged is the hot and humid gas inside the inner tub 3 and the outer tub 2, and the detected humidity may be the humidity of the outer tub 2 or the humidity of the inner tub 3, with the humidity detected in the outer tub 2 being the main one. A temperature and humidity sensor is provided inside the outer tub 2, and the temperature and humidity sensor is used to detect the humidity and temperature inside the outer tub 2.

[0045] For example, when normally washing clothes, after the outer tub 2 finishes washing or rinsing the clothes, the clothes are taken out of the outer tub 2, then the inner tub 3 is installed on the wave wheel 21, and then the clothes are put into the inner tub 3, and the inner tub 3 dehydrates the clothes; after the inner tub 3 finishes dehydration, the hot air generated by the heating module 51 enters the outer tub 2 through the perforations, the outer tub through-hole 22, and the wave wheel through-hole 211, and then enters the inner tub 3 from the outer tub 2 through the inner tub through-hole 32, realizing the heating of the residual water inside the inner tub 3 and the outer tub 2, so that hot and humid gas is generated in the inner and outer tubs 2. The heating module 51 may be a heating wire, etc.

[0046] As hot and humid gas is continuously generated inside the inner tub 3 and the outer tub 2, the humidity inside the inner tub 3 and the outer tub 2 continuously increases. When the humidity reaches the first set humidity, the drain pump 41 is turned on. While the drain pump 41 is turned on, the heating module 51 is continuously turned on. The drain pipe 4 sucks and discharges the hot and humid gas into the sewer under the power provided by the drain pump 41. By detecting the humidity inside the inner and outer tubs 2 and comparing the humidity with the first set humidity, it is determined whether to turn on the drain pump 41, so as to achieve the purpose of accurately opening and closing the drain pump 41. If the humidity does not reach the first set humidity, the drain pump 41 is not turned on, and the heating module 51 is controlled to continue heating.

[0047] As Figure 1 shown, further, the humid and hot gas generated by the heating module 51 continuously enters the barrel assembly. As the drain pipe 4 continuously discharges the humid and hot gas, the humidity inside the barrel assembly continuously decreases. When it is detected that the humidity inside the barrel assembly is less than the second set humidity, the heating module 51 is turned off, and the drain pump 41 continues to be turned on. The humid and hot gas is continuously discharged through the drain pipe 4. The first set humidity is less than the second set humidity.

[0048] As the heating module 51 continuously heats and the drain pipe 4 continuously discharges the humid and hot gas, the humidity inside the inner barrel 3 and the outer barrel 2 continuously decreases. When the humidity is less than the second humidity, the heating module 51 is turned off. Since there is still humid and hot gas in the inner barrel 3 and the outer barrel 2, in order to further drain the humid and hot gas in the inner barrel 3 and the outer barrel 2 completely, therefore, after the heating module 51 is turned off, the drain pump 41 continues to be turned on for a certain period of time, and the drain pipe 4 continues to discharge the humid and hot gas; by comparing the humidity with the second humidity, it is judged whether to turn off the heating module 51, so as to achieve the purpose of accurately turning off the heating module 51. By turning off the heating module 51 in time, the waste of energy can be reduced.

[0049] When the humidity inside the inner barrel 3 and the outer barrel 2 is greater than or equal to the second set humidity, it means that the humidity inside the inner barrel 3 and the outer barrel 2 is still relatively high, and the heating module 51 needs to be continuously turned on.

[0050] Further, as the drain pipe 4 continues to discharge the humid and hot gas, the temperature inside the barrel assembly continuously decreases. When it is detected that the temperature inside the barrel assembly is less than the set temperature, the drain pump 41 is turned off, and the drain pipe 4 stops discharging the humid and hot gas. By detecting the temperature inside the barrel and comparing the barrel temperature with the set temperature, it is judged whether to turn off the drain pump 41, so as to achieve the purpose of accurately turning off the drain pump 41 and avoid the drain pump 41 being turned on for too long; if it is detected that the temperature inside the barrel is greater than or equal to the set temperature, it means that the temperature is relatively high, and the drain pump 41 still needs to be continuously turned on.

[0051] Further, during the process that the heating module 51 and the drain pump 41 are in the on state, the control the wave wheel 21 rotates at a set speed; since the inner barrel 3 rotates with the rotation of the wave wheel 21, therefore, after the dehydration is over, the control the wave wheel 21 and the inner barrel 3 rotate; by controlling the rotation of the wave wheel 21 and the inner barrel 3, the heating of the residual water in the inner barrel 3 and the outer barrel 2 can be accelerated and the volatilization of the generated humid and hot gas can be accelerated;

[0052] Specifically, after the washing is over, the drain pump 41 is turned off, and after controlling the wave wheel 21 and the inner barrel 3 to stop rotating, the heating module 51 is turned on;

[0053] Before the drain pump 41 is turned on after the heating module 51 is turned on, the wave wheel 21 is controlled to rotate at the first set speed for heating the residual water in the inner and outer barrels 2;

[0054] After turning on the drain pump 41, control the agitator 21 to rotate at a second set speed greater than the first set speed, which is used to discharge the humid and hot gas that has evaporated in the inner and outer tubs 2 while heating the residual water;

[0055] Before turning off the heating module 51 and before turning off the drain pump 41, control the agitator 21 to rotate at a third set speed greater than the first set speed and less than the second set speed.

[0056] When the washing is finished, which is when the washing of the outer tub 2 is finished or the rinsing of the outer tub 2 is finished, since the inner tub 3 is not placed on the agitator 21 of the outer tub 2, only control the agitator 21 to rotate. If the washing is finished when the dehydration of the inner tub 3 is finished, since the inner tub 3 is placed on the agitator 21 of the outer tub 2 for dehydration, when controlling the agitator 21 to rotate, the inner tub 3 rotates with the agitator 21.

[0057] When the washing is finished when the dehydration of the inner tub 3 is finished, control the agitator 21 and the inner tub 3 to rotate at the first set speed. The rotating inner tub 3 and agitator 21 can accelerate the contact between the hot gas and the residual water, and improve the heating speed of the hot gas to the residual water. Control the agitator 21 and the inner tub 3 to rotate at the second set speed. The rotating inner tub 3 and agitator 21 can accelerate the volatilization of the humid and hot gas. Control the agitator 21 and the inner tub 3 to rotate at the third set speed. The rotating inner tub 3 and agitator 21 can accelerate the volatilization of the humid and hot gas. If the first set speed is too large, the contact time between the hot gas and the residual water is relatively small, and the residual water cannot be heated sufficiently. If the second set speed is too small, it is not conducive to the discharge of the humid and hot gas. Therefore, setting the second set speed to be greater than the first set speed can sufficiently heat the residual water while accelerating the discharge of the humid and hot gas. Since there is less humid and hot gas after turning off the heating module 51, the third set speed is set to be less than the second set speed and greater than the first set speed to avoid the inner tub 3 and the agitator 21 rotating continuously at a high speed.

[0058] Furthermore, after turning off the drain pump 41 when the washing is finished and before turning on the heating module 51, if it is detected that there are clothes in the tub assembly, take out the clothes from the tub assembly before turning on the heating module 51.

[0059] If the washing is finished when the washing of the outer tub 2 is finished or the rinsing of the outer tub 2 is finished, if it is detected that there are clothes in the outer tub 2, the clothes need to be taken out from the outer tub 2 before turning on the heating module 51. If the washing is finished when the dehydration of the inner tub 3 is finished, if it is detected that there are clothes in the inner tub 3, the clothes need to be taken out from the inner tub 3 before turning on the heating module 51;

[0060] The reason for taking out the clothes from the tub before turning on the heating module 51 is mainly to prevent the hot gas generated by the heating module 51 from burning the clothes.

[0061] In an embodiment of the present invention, after the discharge of the humid and hot gas through the drain pipe 4 during the last washing cycle of the washing machine and before the next washing cycle starts, washing water is introduced into the washing tub, and the heating module 51 is activated to heat the washing water. When the temperature of the washing water reaches the set value, the washing water is driven to rotate. After the rotating washing water washes the washing tub and performs high-temperature sterilization, the drain pump 41 is turned on, and the washing water in the inner tub 3 and the outer tub is discharged through the drain pipe 4.

[0062] In an embodiment of the present invention, if the time difference between the end time of discharging the humid and hot gas through the drain pipe 4 during the last washing cycle of the washing machine and the start time of the next washing cycle is greater than the set time difference, then before the next washing cycle starts, first introduce washing water into the washing tub and activate the heating module 51 to heat the washing water. The washing tub is washed and sterilized at high temperature by the rotating and heated washing water. After washing and high-temperature sterilization, the drain pump 41 is turned on, and the washing water in the inner tub 3 and the outer tub 2 is discharged to the sewer through the drain pipe 4. It should be noted that the next washing cycle can be the washing of the clothes by the outer tub 2, the rinsing of the clothes by the outer tub 2, the dehydration of the clothes by the inner tub 3, or the dehydration of the clothes by the inner tub 3 after the clothes are washed and rinsed by the outer tub 2.

[0063] The time difference between the end time of discharging the humid and hot gas through the drain pipe 4 during the last washing cycle of the washing machine and the start time of the next washing cycle is greater than the set time difference, indicating that the washing machine has not been used for a long time. Even if the humid and hot gas was discharged during the last washing cycle, there is still a possibility of bacteria growth and mildew in the tub. Therefore, before the next washing of the clothes, the inner tub 3 and the outer tub 2 can be washed and sterilized at high temperature.

[0064] When the washing is completed, which is the end of the washing or rinsing of the outer tub 2, only the outer tub 2 is washed and sterilized at high temperature. After the discharge of the washing water through the drain pipe 4 is completed, the drain pipe 4 is closed, and clothes are added to the outer tub 2 for washing or rinsing.

[0065] When the washing is completed, which is the dehydration end of the inner tub 3 after the clothes are washed and rinsed by the outer tub 2, before washing the clothes, the inner tub 3 is installed on the agitator 21. The inner tub 3 and the outer tub 2 are washed and sterilized at high temperature. After the discharge of the washing water through the drain pipe 4 is completed, the inner tub 3 is removed from the agitator 21, and then the clothes are put into the outer tub 2 for washing and rinsing.

[0066] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can also be further combined or replaced. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A control method for a washing machine, the washing machine comprising a tub assembly and a drainage structure for draining the tub assembly, Characterized in that, After the washing of the washing machine is completed, the residual water in the tub assembly is heated to generate humid and hot gas; and the drainage structure is opened to discharge the humid and hot gas in the tub assembly to the outside.

2. The control method according to claim 1, Characterized in that, The washing machine comprises a heating module, and the drainage structure comprises a drainage pipe and a drainage pump provided on the drainage pipe; after the washing is completed, the drainage pump is closed, the heating module is opened, and the hot gas generated by the heating module enters the tub assembly to heat the residual water, so that humid and hot gas is generated in the tub assembly. When it is detected that the humidity in the tub assembly reaches a first set humidity, the drainage pump is opened, and the heating module is continuously opened, and the humid and hot gas is discharged through the drainage pipe.

3. The control method according to claim 2, Characterized in that, The humid and hot gas generated by the heating module continuously enters the tub assembly. As the humid and hot gas is continuously discharged through the drainage pipe, the humidity in the tub assembly continuously decreases. When it is detected that the humidity in the tub assembly is less than a second set humidity, the heating module is closed, the drainage pump is continuously opened, and the humid and hot gas is continuously discharged through the drainage pipe. The first set humidity is less than the second set humidity.

4. The control method according to claim 3, Characterized in that, As the drainage pipe continuously discharges the humid and hot gas, the temperature in the tub assembly continuously decreases. When it is detected that the temperature in the tub assembly is less than the set temperature, the drainage pump is closed to stop the drainage pipe from discharging the humid and hot gas.

5. The control method according to any one of claims 1-4, Characterized in that, The tub assembly comprises an outer tub and an inner tub provided in the outer tub. A wave wheel is provided at the bottom of the outer tub, and the inner tub is detachably mounted on the wave wheel and rotates with the wave wheel; During the process that the heating module and the drainage pump are in the open state, the wave wheel is controlled to rotate at a set speed.

6. The control method according to claim 5, Characterized in that, After the washing is completed, the drainage pump is closed, and after controlling the wave wheel to stop rotating, the heating module is opened; After the heating module is opened and before the drainage pump is opened, the wave wheel is controlled to rotate at a first set speed for heating the residual water in the inner and outer tubs; After the drainage pump is opened, the wave wheel is controlled to rotate at a second set speed greater than the first set speed for discharging the volatilized humid and hot gas in the inner and outer tubs while heating the residual water; After the heating module is closed and before the drainage pump is closed, the wave wheel is controlled to rotate at a third set speed greater than the first set speed and less than the second set speed.

7. The control method according to claim 6, Characterized in that, The outer tub is a washing tub for holding clothes during washing or rinsing of clothes, the inner tub is a washing tub for holding clothes during dehydration of clothes, and the end of the washing of the washing machine is the end of the washing of the outer tub, the end of the rinsing of the outer tub or the end of the dehydration of the inner tub.

8. The control method according to any one of claims 1-7, Characterized in that, After the drainage pump is closed after the washing is completed and before the heating module is opened, if it is detected that there are clothes in the tub assembly, the clothes are taken out of the tub assembly before the heating module is opened.

9. The control method according to any one of claims 1-8, Characterized in that, After the drain pipe of the washing machine discharges the humid and hot gas during the last washing and before the next washing starts, washing water is fed into the tub assembly, and the heating module is turned on to heat the washing water. When the temperature of the washing water reaches the set value, the washing water is driven to rotate. After the rotating washing water washes the tub assembly and performs high-temperature sterilization, the drain pump is turned on, and the washing water in the tub assembly is discharged through the drain pipe.

10. A washing machine characterized in that it adopts the control method of the washing machine according to any one of claims 1-9.

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