Ventilation control method for laundry equipment

Abstract

The present application belongs to laundry technology field, aims at solving the problem that the existing laundry equipment is very wet inside the drum assembly after washing clothes, and is easy to breed bacteria and produce odor, and will form secondary pollution to the subsequent washing clothes. For this purpose, the present application provides a ventilation control method of laundry equipment, in the case of opening the inlet fan, the current of the inlet fan is obtained; if the current of the inlet fan reaches the preset current value, water is injected into the inlet pipe to trigger the siphon device to discharge the water in the inlet pipe, and then the drum assembly is ventilated; if the current of the inlet fan does not reach the preset current value, the drum assembly is directly ventilated. The present application can dry the residual water in the drum assembly after washing clothes, avoid breeding bacteria and producing odor, and the clothes will not be secondarily polluted when washing clothes again, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of laundry, and specifically provides a ventilation control method of a laundry equipment. BACKGROUND

[0002] The laundry equipment is a laundry treatment equipment capable of washing, rinsing, dewatering and / or drying clothes.

[0003] Taking a drum washing machine and a drum washing and drying integrated machine as examples, they are designed according to the principle of hammering clothes, and have many advantages such as low abrasion, no winding, washing cashmere and silk fabrics, and large capacity. After washing clothes, the inside of the drum assembly is very humid, and the humid environment is easy to breed bacteria in the inside of the drum assembly, and produce odor. Opening the door body cannot prevent this situation from happening, and the user will also cause secondary pollution to the newly added clothes when using the washing machine again, which is not conducive to the use of the user and affects the normal experience of the user.

[0004] Therefore, there is a need in the art for a new ventilation control method of a laundry equipment to solve the above problems. SUMMARY

[0005] In order to solve the above problems in the prior art, that is, to solve the problem that the inside of the drum assembly of the existing laundry equipment is very humid after washing clothes, which is easy to breed bacteria and produce odor, and will cause secondary pollution to the subsequent washing clothes, the present application provides a ventilation control method of a laundry equipment, the laundry equipment comprising a drum assembly, a laundry treatment agent feeding box and a water inlet pipe, the inlet of the water inlet pipe being in communication with the laundry treatment agent feeding box, the outlet of the water inlet pipe being in communication with the drum assembly, the laundry equipment further comprising an air inlet pipe for connecting the outside with the drum assembly and a siphon device connected with the water inlet pipe, an air inlet fan being arranged in the air inlet pipe, the siphon device being arranged to discharge water in the water inlet pipe when the water in the water inlet pipe reaches a siphon height, so that the water inlet pipe is in communication with the outside, the ventilation control method comprising: in the case that the air inlet fan is turned on, acquiring the current current of the air inlet fan; if the current current of the air inlet fan reaches a preset current value, water is injected into the water inlet pipe to trigger the siphon device to discharge the water in the water inlet pipe, and then ventilation is performed in the drum assembly; if the current current of the air inlet fan does not reach the preset current value, ventilation is directly performed in the drum assembly.

[0006] In the preferred technical scheme of the above ventilation control method, the water inlet pipe is a U-shaped water inlet pipe, and the siphon device is a siphon pipe, the siphon triggering position of the siphon pipe being located between the height position of the inlet of the U-shaped water inlet pipe and the height position of the outlet of the U-shaped water inlet pipe.

[0007] In the preferred technical scheme of the ventilation control method, the siphon pipe is communicated with the bottom of the horizontal section of the U-shaped water inlet pipe.

[0008] In the preferred technical scheme of the ventilation control method, the cylinder assembly comprises an outer cylinder, an inner cylinder rotatably arranged in the outer cylinder, and a window cushion connected with the outer cylinder, and the air inlet pipe is communicated with the folded part of the window cushion.

[0009] In the preferred technical scheme of the ventilation control method, the air inlet pipe is communicated with the top of the folded part of the window cushion.

[0010] In the preferred technical scheme of the ventilation control method, the cylinder assembly comprises an outer cylinder, an inner cylinder rotatably arranged in the outer cylinder, and a window cushion connected with the outer cylinder, and the air inlet pipe is communicated with the outer cylinder.

[0011] In the preferred technical scheme of the ventilation control method, the air inlet pipe is communicated with the top of the folded part of the window cushion.

[0012] In the preferred technical scheme of the ventilation control method, the air inlet pipe is communicated with the top of the folded part of the window cushion.

[0013] In the preferred technical scheme of the ventilation control method, the air inlet pipe is communicated with the top of the folded part of the window cushion.

[0014] In the preferred technical scheme of the ventilation control method, the air inlet pipe is communicated with the top of the folded part of the window cushion.

[0015] It can be understood by those skilled in the art that, in the preferred technical scheme of the present application, by detecting the current of the air inlet fan, if the current of the air inlet fan is too large, it indicates that a water seal is formed in the water inlet pipe, which blocks the ventilation, and by injecting water into the water inlet pipe and under the action of the air inlet fan, the water in the water inlet pipe can quickly reach the siphon height, so that the siphon device can discharge the water in the water inlet pipe to remove the water seal, thereby realizing ventilation. If the current of the air inlet fan is not large, it indicates that no water seal is formed in the water inlet pipe, and the ventilation is not blocked, so the ventilation can be directly realized. Through such a control mode, the residual water inside the cylinder assembly can be dried after the clothes are washed, ensuring that the inside of the cylinder assembly is dry, avoiding the breeding of bacteria and the generation of odor, and the clothes will not be secondarily contaminated when the user uses the washing equipment to wash the clothes again. Moreover, no substantial structural changes are required for the washing equipment, the structure is simple, the production cost is saved, and the user experience is improved.

[0016] Further, the water inlet pipe is a U-shaped water inlet pipe, and the siphon device is a siphon pipe. When the U-shaped water inlet pipe is filled with water, the siphon trigger position of the siphon pipe is higher than the outlet of the U-shaped water inlet pipe, so that the siphon phenomenon is not triggered during the water filling process of the laundry equipment, and the water in the U-shaped water inlet pipe can enter the drum assembly. When the laundry equipment performs the ventilation program after completing the washing process, the air in the drum assembly enters the water inlet pipe, so that the water level in the siphon pipe continuously rises under the action of air pressure and water injection operation, until the siphon phenomenon of the siphon pipe is triggered, so as to discharge the water in the water inlet pipe, and then the water inlet pipe is connected with the outside to realize exhaust. In addition, the siphon trigger position of the siphon pipe is lower than the inlet of the U-shaped water inlet pipe, so that the water in the U-shaped water inlet pipe cannot flow back to the laundry treatment agent box and cause overflow, and the safe operation of the laundry equipment is ensured.

[0017] Further, the siphon pipe is in communication with the bottom of the horizontal section of the U-shaped water inlet pipe, so that the siphon pipe can completely discharge the water in the U-shaped water inlet pipe when the laundry equipment performs the ventilation program, and the residual water in the U-shaped water inlet pipe is avoided.

[0018] Further, the anti-foam overflow member arranged in the air inlet pipe can prevent excessive foam from overflowing out of the air inlet pipe during the washing process of the laundry equipment, avoid the overflow of foam in the laundry equipment, avoid the influence on the indoor environment, and further improve the user experience.

[0019] Further, the air inlet fan is arranged on the upstream side of the anti-foam overflow member along the air inlet direction of the air inlet pipe, which can prevent the air inlet fan from being affected by foam and water, avoid the short circuit of the air inlet fan, and further improve the safety of the laundry equipment.

[0020] Further, the air filter member arranged in the air inlet pipe can prevent dust and other impurities from being carried into the drum assembly, ensure that the inside of the drum assembly is not affected, and further improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0021] The specific embodiments of the present application will be described below with reference to the accompanying drawings and in conjunction with a drum washing machine. In the drawings:

[0022] Figure 1 is a structural schematic of a drum washing machine of the present application Figure 1 ;

[0023] Figure 2 is a structural schematic of a drum washing machine of the present application Figure 2 ;

[0024] Figure 3 is a partial schematic of a drum washing machine of an embodiment of the present application Figure 1 (U-shaped water inlet pipe water seal);

[0025] Figure 4 is a partial view of a drum washing machine according to an embodiment of the present application Figure 2 (U-shaped water inlet pipe siphon water seal removal);

[0026] Figure 5 is a partial view of a drum washing machine according to an embodiment of the present application Figure 3 (U-shaped water inlet pipe air exhaust);

[0027] Figure 6 is a flow chart of a ventilation control method embodiment of a drum washing machine according to the present application. DETAILED DESCRIPTION

[0028] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. For example, although the present application is described in conjunction with a drum washing machine, the technical principles of the present application are obviously also applicable to drum washing and drying machines, shoe washing machines and other devices, and such adjustments and changes in application objects do not constitute a limitation on the present application, and should be limited within the protection scope of the present application.

[0029] It should be noted that in the description of the present application, the terms "middle", "upper", "lower", "horizontal", "vertical", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "connected", "communicated" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0031] Based on the problem of the existing drum washing machine pointed out in the background that the inside of the drum assembly is very humid after washing clothes, which is easy to breed bacteria and produce odor, and will cause secondary pollution to the clothes washed subsequently, the present application provides a ventilation control method of a drum washing machine, which aims to dry the residual water inside the drum assembly after washing clothes, ensure the dryness of the inside of the drum assembly, avoid breeding bacteria and producing odor, and the clothes will not be secondarily polluted when the user uses the washing device to wash clothes again, and without making substantial structural changes to the washing device, the structure is simple, saves production cost, and improves user experience.

[0032] Specifically, as shown in Figure 1 and 2 The drum washing machine of the present application comprises a cabinet 1 and a drum assembly arranged in the cabinet 1, the drum assembly comprising an outer drum 2 suspended in the cabinet 1 by a plurality of elastic damping members, an inner drum 3 rotatably arranged in the outer drum 2, and a window pad 4 connected with the outer drum 2, the window pad 4 being further connected with a laundry loading opening of the cabinet 1, the inner drum 3 being driven by a combination of a motor and a belt or by a direct drive motor, the drum washing machine being capable of sealing tightly with the window pad 4 when a door glass is closed, the drum washing machine further comprising a laundry treatment agent dispensing box 5 (such as a detergent box and a softener box, etc.) and a water inlet pipe, an inlet of the water inlet pipe being in communication with the laundry treatment agent dispensing box 5, an outlet of the water inlet pipe being in communication with the drum assembly, external water entering the laundry treatment agent dispensing box 5 being injected into the outer drum 2 together with the laundry treatment agent through the water inlet pipe, the laundry treatment agent dispensing box 5 being in communication with the outside, the height position of the inlet of the water inlet pipe being higher than the height position of the outlet of the water inlet pipe, the water inlet pipe preferably being in communication with the outer drum 2. When the drum washing machine performs a laundry program, water is first injected into the outer drum 2 through the water inlet pipe until a washing water level is reached, and then the water inlet is stopped, at which time there is still water in the water inlet pipe and a water seal is formed.

[0033] As shown in Figure 1As shown, the drum washing machine of the present application further comprises an air inlet pipe 7 which is connected with the drum assembly and a siphon device which is connected with the water inlet pipe, the air inlet pipe 7 is provided with an air inlet fan 8, and the siphon device is arranged to discharge the water in the water inlet pipe when the water reaches the siphon height, so as to connect the water inlet pipe with the outside. The ventilation control method of the present application comprises: in the case that the air inlet fan 8 is opened, obtaining the current current of the air inlet fan 8; if the current current of the air inlet fan 8 reaches a preset current value, water is injected into the water inlet pipe to trigger the siphon device to discharge the water in the water inlet pipe, and then the drum assembly is ventilated; if the current current of the air inlet fan 8 does not reach the preset current value, the drum assembly is directly ventilated, wherein the preset current value is preferably the current value corresponding to the case that the water in the water inlet pipe completely forms a water seal. Through the detection and judgment of the current current of the air inlet fan 8, whether the water in the water inlet pipe forms a water seal can be reflected, when the current current of the air inlet fan 8 reaches the preset current value, it indicates that the water in the water inlet pipe forms a water seal, which causes the ventilation to be blocked, so that the current of the air inlet fan 8 is too high, at this time water can be injected into the water inlet pipe, so that under the action of the air inlet fan 8, the water level in the water inlet pipe can quickly rise until it reaches the siphon height, thereby triggering the siphon device to discharge the water in the water inlet pipe, when the current current of the air inlet fan 8 does not reach the preset current value, it indicates that the water in the water inlet pipe does not form a water seal, at this time the air inlet fan 8 can directly realize the ventilation of the drum assembly. It should be noted that the preset current value can also be set to the current value corresponding to the case that the water in the water inlet pipe approaches to form a water seal, for example, when there is a lot of water in the water inlet pipe, although the ventilation is not completely blocked, the ventilation capacity at this time is also very limited, at this time the water in the water inlet pipe can also be injected in the way of water injection to make the water level in the water inlet pipe quickly rise under the action of the air inlet fan, and then the water in the water inlet pipe is discharged, so as to increase the air flow area of the water inlet pipe to ensure the subsequent ventilation operation, those skilled in the art can flexibly set the water seal condition corresponding to the preset current value in actual application, as long as the demarcation point determined by the preset current value can distinguish whether it is necessary to inject water into the water inlet pipe to trigger the siphon phenomenon to remove the water seal, the preset current value can be determined before the drum washing machine is shipped, or can be determined when the drum washing machine is used for the first time after entering the user's home. In the above, the way of injecting water into the water inlet pipe is preferably to directly open the water inlet valve of the drum washing machine, so that the water from the outside enters the laundry treatment agent dropping box through the water inlet valve and then enters the water inlet pipe, of course, other water injection ways can also be used, for example, a water inlet valve is separately arranged on the water inlet pipe to control the water injection operation to the water inlet pipe.

[0034] In a possible case, as shown in Figure 6 The ventilation control method of the present application comprises:

[0035] S1: after the drum washing machine is washed, the air inlet fan 8 is opened;

[0036] S2: Obtain the current of the intake fan 8;

[0037] S31: If the current current of the air intake fan 8 reaches the preset current value, open the water inlet valve for 2 seconds and then ventilate into the outer cylinder.

[0038] S32: If the current of the air intake fan 8 does not reach the preset current value, ventilation will be directly introduced into the outer cylinder;

[0039] S4: Rotate the inner cylinder 3.

[0040] In step S4, if there are clothes in the inner drum 3, the clothes can be shaken out while the drum assembly is being dried.

[0041] In step S31, in addition to directly setting the opening time of the inlet valve, the water level in the inlet pipe can also be detected by setting a water level sensor in the inlet pipe. When the detected water level in the inlet pipe reaches the siphon height, the inlet valve is controlled to close.

[0042] When a water seal is formed in the water inlet pipe, the air intake fan 8, when turned on, can introduce outside air into the outer drum 2 through the air intake pipe 7. The air in the outer drum 2 will enter the water inlet pipe. Since there is water in the water inlet pipe and a water seal is formed, the water level in the siphon device will rise under the action of air pressure after the gas enters the water inlet pipe. In addition, the water injection operation in the water inlet pipe will cause the water level in the water inlet pipe to rise rapidly until the siphon device is triggered to produce a siphon phenomenon. The siphon device can discharge the water in the water inlet pipe, thereby releasing the water seal in the water inlet pipe. The air in the outer drum 2 can continue to enter the laundry detergent dispenser 5 after entering the water inlet pipe. Since the laundry detergent dispenser 5 is connected to the outside, the outer drum 2 is in a conductive state with the outside. Under the action of the air intake fan 8, ventilation is achieved, thereby drying the inside of the drum assembly and removing odors from the drum assembly, avoiding the growth of bacteria and secondary pollution to subsequent washing of clothes.

[0043] Preferably, such as Figures 1 to 5As shown, the water inlet pipe is a U-shaped water inlet pipe 6, and the siphon device is a siphon pipe 9. The siphon triggering position of the siphon pipe 9 is located between the height position of the inlet of the U-shaped water inlet pipe 6 and the height position of the outlet of the U-shaped water inlet pipe 6. During normal washing of the drum washing machine, water is first injected into the outer drum 2. External water (generally tap water) enters the laundry treatment agent dispensing box 5 and then enters the U-shaped water inlet pipe 6 through the inlet of the U-shaped water inlet pipe 6. The water level in the U-shaped water inlet pipe 6 continuously rises and enters the outer drum 2 through the outlet of the U-shaped water inlet pipe 6. The siphon triggering position of the siphon pipe 9 is higher than the outlet of the U-shaped water inlet pipe 6. Due to the principle of the communicating vessel, the water in the U-shaped water inlet pipe 6 can only enter the outer drum 2 and cannot trigger the siphon phenomenon of the siphon pipe 9. After the water injection is completed, the water in the U-shaped water inlet pipe 6 stores and completely seals the horizontal section and at least a part of the vertical section of the U-shaped water inlet pipe 6, that is, the U-shaped water inlet pipe 6 is water sealed (as shown in Figure 3 When the drum washing machine performs the ventilation program, the air inlet fan 8 is turned on, external air is introduced into the air inlet pipe 7 by the air inlet fan 8, and then the air enters the outer drum 2. The air in the outer drum 2 enters the U-shaped water inlet pipe 6 through the outlet of the U-shaped water inlet pipe 6, and then exerts a downward pressure on the water in the U-shaped water inlet pipe 6 under the action of air pressure, so that the water level in the siphon pipe 9 rises (as shown in Figure 4 When the water injection operation is performed on the U-shaped water inlet pipe 6, the water level in the U-shaped water inlet pipe 6 rises rapidly until the siphon triggering position (that is, the aforementioned siphon height) is reached. The siphon pipe 9 discharges the water in the U-shaped water inlet pipe 6, so that the U-shaped water inlet pipe 6 is unsealed, and then gas can enter the laundry treatment agent dispensing box 5 through the inlet of the U-shaped water inlet pipe 6, and then be discharged to the outside (as shown in Figure 5 The water in the U-shaped water inlet pipe 6 cannot enter the laundry treatment agent dispensing box 5, and thus the drum washing machine does not overflow. In the above, as an alternative, the U-shaped water inlet pipe 6 can also be replaced by a V-shaped water inlet pipe or the like. Those skilled in the art can flexibly set the shape and structure style of the water inlet pipe according to the internal arrangement space of the drum washing machine in actual application. Such adjustment and change of the shape and structure style of the water inlet pipe do not constitute a limitation on the present application and should be limited within the protection scope of the present application. In a preferred case, the siphon pipe 9 communicates with the bottom of the horizontal section of the U-shaped water inlet pipe 6. Through such a setting, the water in the U-shaped water inlet pipe 6 can be completely discharged when the drum washing machine performs the ventilation program, so as to avoid residue.

[0044] Further, the air inlet pipe 7 can be in communication with the outer drum 2, and can also be in communication with the pleat part of the window pad 4, and is most preferably in communication with the pleat part of the window pad 4. Through such an arrangement, external air can first enter the pleat part of the window pad 4 and then enter the outer drum 2, so that the pleat part of the window pad 4 and the outer drum 2 can be dried at the same time, so that the inside of the drum assembly is dried without dead angles, bacteria breeding in the inside of the drum assembly is avoided, the user does not need to repeatedly clean the drum assembly, and secondary pollution to the clothes to be washed subsequently is avoided. Further, when the air inlet pipe 7 is in communication with the outer drum 2, it is preferably in communication with the top of the outer drum 2, so as to avoid the water in the outer drum 2 from flowing back into the air inlet pipe 7 during washing. When the air inlet pipe 7 is in communication with the pleat part of the window pad 4, it is preferably in communication with the top of the pleat part of the window pad 4, so as to also avoid the water in the outer drum 2 from flowing back into the air inlet pipe 7 during washing.

[0045] Preferably, as Figure 1As shown, the air inlet pipe 7 is provided with a foam overflow prevention member 10, which can be a one-way valve, or a combination of a damper. For example, the foam overflow prevention member 10 includes a door body, a first permanent magnet and a second permanent magnet, the door body is rotatably arranged in the air inlet pipe, the first permanent magnet is arranged on the door body, and the second permanent magnet is arranged on the upstream side of the door body along the air inlet direction of the air inlet pipe. The magnetic properties of the first permanent magnet and the second permanent magnet are different. When the air inlet fan 8 is turned on, the air flow generated by the air inlet fan 8 can overcome the attraction force between the first permanent magnet and the second permanent magnet to make the door body rotate from the closed position to the open position, so that the air outside enters the outer drum 2. When the air inlet fan 8 is stopped, the door body is kept in the closed position by the attraction force between the first permanent magnet and the second permanent magnet, thereby preventing the foam from overflowing. For another example, the foam overflow prevention member 10 includes a door body, a first permanent magnet and a second permanent magnet, the door body is rotatably arranged in the air inlet pipe, the first permanent magnet is arranged on the door body, and the second permanent magnet is arranged on the downstream side of the door body along the air flow direction of the air inlet pipe. The magnetic properties of the first permanent magnet and the second permanent magnet are the same. When the air inlet fan 8 is turned on, the air flow generated by the air inlet fan 8 can overcome the repulsion force between the first permanent magnet and the second permanent magnet to make the door body rotate from the closed position to the open position, so that the air outside enters the outer drum 2. When the air inlet fan 8 is stopped, the door body is kept in the closed position by the repulsion force between the first permanent magnet and the second permanent magnet, thereby preventing the foam from overflowing. Of course, the first permanent magnet and the second permanent magnet described above can also be replaced by a resilient torsion spring, i.e. the door body is rotatably arranged in the air inlet pipe 7 by the resilient torsion spring. The air inlet fan 8 can make the door body overcome the torsion of the resilient torsion spring to open the air inlet pipe 7, and the resilient torsion spring makes the door body reset to close the air inlet pipe 7 after the air inlet fan 8 is turned off. Those skilled in the art can flexibly set the specific structure of the foam overflow prevention member 10 in actual application. Such adjustment and change of the specific structure of the foam overflow prevention member 10 do not constitute a limitation on the present application, and should be limited within the protection scope of the present application. In a preferred case, along the air inlet direction of the air inlet pipe 7, the air inlet fan 8 is arranged on the upstream side of the foam overflow prevention member 10. Through such arrangement, the air inlet fan 8 will not contact the foam to cause short circuit, thereby improving the safety of the drum-type washing machine.

[0046] Preferably, the air inlet pipe 7 is provided with an air filter member, which can adopt a single-stage filter screen or a multi-stage filter screen structure, or other filter structures, so as to avoid the dirty outside entering the outer drum 2.

[0047] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A ventilation control method of a laundry appliance, characterized in that, The laundry equipment comprises a drum assembly, a laundry treatment agent dispensing box, and a water inlet pipe, an inlet of the water inlet pipe being communicated with the laundry treatment agent dispensing box, an outlet of the water inlet pipe being communicated with the drum assembly, the laundry equipment further comprising an air inlet pipe for communicating the outside with the drum assembly and a siphon device connected with the water inlet pipe, an air inlet fan being arranged in the air inlet pipe, the siphon device being arranged to discharge water in the water inlet pipe when the water in the water inlet pipe reaches a siphon height, so that the water inlet pipe is communicated with the outside, The water inlet pipe is a U-shaped water inlet pipe, the siphon device is a siphon pipe, and a siphon triggering position of the siphon pipe is located between a height position where the inlet of the U-shaped water inlet pipe is located and a height position where the outlet of the U-shaped water inlet pipe is located. The ventilation control method comprises: In the case that the air inlet fan is turned on, the current of the air inlet fan is acquired; If the current of the air inlet fan reaches a preset current value, water is injected into the water inlet pipe, and ventilation is performed in the drum assembly at the same time, so as to trigger the siphon device to discharge the water in the water inlet pipe, and then ventilation is performed in the drum assembly; If the current of the air inlet fan does not reach the preset current value, ventilation is directly performed in the drum assembly.

2. The ventilation control method according to claim 1, characterized in that, The siphon pipe is communicated with the bottom of the horizontal section of the U-shaped water inlet pipe.

3. The ventilation control method according to claim 1, characterized by, The drum assembly comprises an outer drum, an inner drum rotatably arranged in the outer drum, and a window pad connected with the outer drum, the air inlet pipe being communicated with a wrinkle part of the window pad.

4. The ventilation control method according to claim 3, characterized by, The air inlet pipe is communicated with the top of the wrinkle part of the window pad.

5. The ventilation control method according to claim 1, characterized by, The drum assembly comprises an outer drum, an inner drum rotatably arranged in the outer drum, and a window pad connected with the outer drum, the air inlet pipe being communicated with the outer drum.

6. The ventilation control method according to claim 5, characterized by The air inlet pipe is communicated with the top of the outer drum.

7. The ventilation control method according to claim 1, characterized by, The air inlet pipe is provided with a foam overflow prevention member.

8. The ventilation control method according to claim 7, characterized by, In the air inlet direction of the air inlet pipe, the air inlet fan is arranged on the upstream side of the foam overflow prevention member.

9. The ventilation control method according to any one of claims 1 to 8, characterized by, The air inlet pipe is provided with an air filtering member.

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