Clothing treatment device

Abstract

The present application provides a laundry treating apparatus, comprising: a cleaning tub for receiving an object to be cleaned and cleaning water and having an opening for putting the object to be cleaned therein; a lid assembly covering the opening and forming a sealed chamber with the cleaning tub, the lid assembly having a convex portion protruding into the interior of the cleaning tub; a drainage passage connected to the cleaning tub and for discharging the cleaning water; and a suction portion provided in the drainage passage for generating a negative pressure to suck the cleaning water out of the cleaning tub. The laundry treating apparatus further comprises: a gas guiding assembly for introducing external gas into the cleaning tub; and a drainage structure for uniformly distributing the introduced external gas over the entire circumference of the cleaning tub, the gas guiding assembly being in gas communication with the drainage structure. The laundry treating apparatus is provided with the gas guiding assembly and the drainage structure, so that the gas can be substantially uniformly distributed around the laundry, achieving a good laundry dehydration effect.

Description

Technical Field

[0001] This application relates to the field of clothing washing, and more particularly to a clothing treatment device. Background Art

[0002] Currently, washing machines on the market are mainly divided into pulsator washing machines, drum washing machines, and agitator washing machines. When dehydrating clothes, all three types of washing machines spin the washing tub at a high speed to throw out the washing water on the clothes, thereby realizing the dehydration process of washing clothes.

[0003] Existing washing machines have high requirements for electricity and water during the washing and dehydration processes, and their dehydration is all high-speed rotation dehydration. Since high-speed rotation dehydration will cause significant vibration and noise of the entire washing machine, existing washing machines have high requirements for the structural stability of the entire machine, vibration reduction structure, and noise countermeasures. In addition, during the washing and dehydration process of existing washing machines, the high-speed centrifugation, eccentricity, or beating of clothes will cause serious problems such as clothes wear, knotting, wrinkling, and deformation after dehydration, which have always troubled users with high requirements for clothes washing.

[0004] CN201780061348.3 discloses a pressure washing washing machine, which has a washing tub, a squeezing part, a suction part, an outside air introduction part, and a control part. In the dehydration program, the pressure washing washing machine introduces outside air, presses the object to be cleaned with the squeezing part, and sucks the washing water and the outside air introduced into the inside of the washing tub with the suction part to dehydrate. However, the outside air introduced in the dehydration program cannot fill the entire dehydration chamber and is directly sucked into the dehydration port, resulting in uneven air flow supplement during dehydration, poor dehydration effect, and unstable clothes dehydration rate. Summary of the Invention

[0005] Based on the above problems of the prior art, this application aims to provide a clothing treatment device that can make the introduced outside air fill the entire washing tub approximately evenly during the dehydration program of discharging the washing water, that is, can make the gas fill the sealed chamber where the object to be cleaned is placed evenly, so as to achieve a good dehydration effect.

[0006] According to the clothing treatment device of this application, its technical solution includes:

[0007] A clothing treatment device, comprising:

[0008] A washing tub for receiving the object to be cleaned and washing water and having an opening for placing the object to be cleaned;

[0009] A lid assembly covering the opening and forming a sealed chamber with the washing tub, the lid assembly having a convex portion protruding into the inside of the washing tub;

[0010] A drainage passage, connected to the cleaning tank and used for discharging the cleaning water; and

[0011] A suction part, arranged in the drainage passage, for generating negative pressure to suck the cleaning water out of the cleaning tank;

[0012] Wherein:

[0013] The clothing treatment device further includes:

[0014] An air guiding component for introducing external gas into the cleaning tank; and

[0015] A drainage structure for evenly distributing the introduced external gas over the entire circumference of the cleaning tank, and the air guiding component is in gas communication with the drainage structure.

[0016] The clothing treatment device is provided with an air guiding component and a drainage structure, so that the gas can be roughly evenly distributed around the clothing, achieving a good clothing dehydration effect.

[0017] Optionally, the drainage structure includes:

[0018] A first drainage groove arranged at the bottom of the convex part on the side opposite to the bottom of the cleaning tank and extending along the circumferential direction of the cleaning tank; and / or

[0019] A second drainage groove arranged on the side wall of the cleaning tank and extending along the circumferential direction of the cleaning tank; and / or

[0020] A third drainage groove arranged at the bottom of the cleaning tank opposite to the convex part and extending along the circumferential direction of the cleaning tank.

[0021] The first drainage groove and / or the second drainage groove and / or the third drainage groove have a simple structure and are easy to manufacture, and the first drainage groove, the second drainage groove and the third drainage groove can be arranged alone or in combination to achieve that the gas can be roughly evenly distributed around the clothing.

[0022] Optionally, the first drainage groove is arranged at the intersection position between the bottom and the side wall part of the convex part and extends along the entire circumference of the cleaning tank,

[0023] When the convex part presses the object to be cleaned, the first drainage groove still exists.

[0024] Arranging the first drainage groove at the intersection position between the bottom and the side wall part of the convex part makes the first drainage groove less likely to be affected by the object to be cleaned during the dehydration process of the clothing, such as when the convex part extends downward, and is close to the air guiding channel, making it easy for gas to enter, and thus easy to maintain the groove structure of the first drainage groove.

[0025] Optionally, the air guiding assembly includes an external air inlet portion and an air guiding channel. External gas can enter the air guiding channel through the external air inlet portion and then enter the cleaning tank.

[0026] The air guiding assembly guides external gas into the laundry cleaning device, so that there is gas in the laundry cleaning device that can be distributed between the clothes to achieve a good dehydration effect.

[0027] Optionally, the opening at one end of the air guiding channel that is not connected to the external air inlet portion is exposed inside the cleaning tank. The air guiding channel is in gas communication with the drainage structure, and the external air inlet portion is provided on the cover assembly or the cleaning tank.

[0028] Optionally, the air guiding channel is a groove provided on the side wall of the convex portion and / or a groove provided on the inner side wall of the cleaning tank.

[0029] The air guiding assembly arranged in the above manner has a simple structure, is easy to manufacture, and well realizes guiding external air into the drainage structure.

[0030] Optionally, the air guiding assembly further includes a pressure control valve. The pressure control valve is normally closed. When the negative pressure in the sealed chamber reaches a preset threshold, the pressure control valve opens, and external gas enters the sealed chamber through the air guiding assembly.

[0031] When a pressure control valve is provided, external gas can be replenished in real time as needed.

[0032] Optionally, the laundry treatment device has a pressure detection module. When the pressure detection module detects that the negative pressure in the sealed chamber reaches a preset threshold, the pressure control valve opens, and external gas enters the sealed chamber through the air guiding assembly; when the pressure detection module detects that the negative pressure in the sealed chamber is lower than the preset threshold, the pressure control valve closes.

[0033] Optionally, the pressure control valve is a constant pressure valve. When the negative pressure in the sealed chamber reaches the pressure value required for the constant pressure valve to open, the constant pressure valve opens and simultaneously maintains the negative pressure in the sealed chamber, and external gas enters the sealed chamber through the air guiding assembly.

[0034] Optionally, the drainage structure includes: a first drainage groove arranged at the bottom of the convex portion on the side opposite to the bottom of the cleaning tank and extending along the circumferential direction of the cleaning tank.

[0035] The air guiding assembly includes an external air inlet portion and an air guiding channel. The external air inlet portion is arranged on the cover of the cover assembly, and the air guiding channel puts the external air inlet portion and the first drainage groove in gas communication.

[0036] This is another arrangement of the air guiding component, which can achieve the transportation of external gas to the first drainage groove.

[0037] Optionally, the drainage structure includes: a third drainage groove arranged at the bottom of the cleaning tank opposite to the convex part and extending along the circumferential direction of the cleaning tank.

[0038] The air guiding component includes an external air introduction part and an air guiding channel, the air guiding channel is connected to the third drainage groove, and the external air introduction part communicates the air guiding channel with external gas.

[0039] This is another embodiment of the drainage structure and the air guiding component, which can achieve the transportation of external gas to the third drainage groove.

[0040] Optionally, the outer edge part of the convex part abuts against the side wall of the cleaning tank to form the sealing chamber.

[0041] The outer edge part of the convex part abuts against the side wall of the cleaning tank to form a sealing chamber, which is beneficial to realizing the sealing chamber with a simple structure for clothes dehydration treatment.

[0042] Optionally, the convex part is a flexible film body.

[0043] It is easy to stretch the convex part which is a flexible film body, and it can be pressed when needed.

[0044] According to the clothes treatment device of the present application, it provides a full - circumference air - supplementing suction dehydration system, which can achieve washing, rinsing and dehydration of clothes, and has the following advantages:

[0045] 1. The convex part for pressure washing cooperates with the cleaning tank to form a sealed chamber, making preliminary preparations for efficient dehydration.

[0046] 2. During the dehydration program, by setting the air guiding channel, a gas flow space can be provided for the cleaning tank, thus generating the effect of suction dehydration.

[0047] 3. During the dehydration program, by setting the drainage structure, the gas flowing in the air guiding channel is evenly guided to the periphery of the entire cleaning tank, so as to achieve the effect of uniform distribution of the air flow in the cleaning tank and being sucked into the dehydration port together, improving the dehydration efficiency and making the dehydration rate stable. Brief Description of the Drawings

[0048] Figure 1 It is a schematic diagram of the clothes treatment device according to the present application, wherein the outer edge part of the convex part abuts or is close to abutting against the side wall of the cleaning tank.

[0049] Figure 2 It is a schematic diagram of the clothes treatment device according to the present application, wherein the air guiding component is provided;

[0050] Figure 3 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application;

[0051] Figure 4 is Figure 3 a schematic structural diagram of a part of the laundry treatment apparatus shown in;

[0052] Figure 5 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application;

[0053] Figure 6 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application;

[0054] Figure 7 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application;

[0055] Figure 8 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application;

[0056] Figure 9 is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application.

[0057] Description of the Reference Numerals

[0058] 1. Cleaning tank

[0059] 2. Protrusion

[0060] 3. Object to be cleaned

[0061] 4. First drainage trough

[0062] 6. Dehydration port

[0063] 7. Drainage passage

[0064] 8. Suction part

[0065] 9. Outside air introduction part

[0066] 10. Air guide channel

[0067] 11. Cover assembly

[0068] 12. Pressurization and decompression part

[0069] 13. Second drainage trough

[0070] 14. Third drainage trough

[0071] 15. Cover Detailed implementation manners

[0072] The clothing treatment device of the present application will be described in detail below with reference to the accompanying drawings.

[0073] Figure 1 It is a schematic diagram of the clothing treatment device according to the present application. Among them, the outer edge portion of the convex portion abuts or is close to abutting against the side wall of the cleaning tank. Figure 2 It is a schematic diagram of the clothing treatment device according to the present application. Among them, an air guiding assembly is provided. Figure 3 It is a schematic diagram of an embodiment of the clothing treatment device according to the present application, in which a first drainage groove is provided.

[0074] Now in conjunction with Figures 1 to 3 Describe the clothing treatment device according to the present application. In Figure 3 In the shown embodiment, there is only one drainage structure, that is, the first drainage groove 4.

[0075] As Figure 3 The shown clothing treatment device includes: a cleaning tank 1 for accommodating the object to be cleaned and cleaning water and having an opening for putting the object to be cleaned; the opening is covered by a cover assembly 11; the cover assembly 11 and the cleaning tank 1 form a sealed chamber, and most preferably as Figure 1 shown, the cover assembly 11 has a convex portion 2 protruding into the interior of the cleaning tank 1.

[0076] The clothing treatment device further includes: a drainage passage 7 connected to the cleaning tank 1 and used for discharging the cleaning water; a suction portion 8 provided in the drainage passage 7 for generating negative pressure to suck the cleaning water out of the cleaning tank 1; an air guiding assembly for introducing external gas into the cleaning tank 1; and a first drainage groove 4 for evenly distributing the introduced external gas over the entire circumference of the cleaning tank 1. The air guiding assembly is in gas communication with the first drainage groove 4.

[0077] The air guiding assembly includes an external air introduction portion 9 and an air guiding channel 10. External gas can enter the air guiding channel 10 through the external air introduction portion 9. The opening at the end of the air guiding channel 10 that is not connected to the external air introduction portion 9, that is, Figure 3 the lower opening of the air guiding channel 10 in

[0078] is exposed to the interior of the cleaning tank 1, so that external gas can enter the interior of the cleaning tank 1. Figure 3 In the shown embodiment, external gas enters the air guiding channel 10 through the external air introduction portion 9. The first drainage groove 4 is in gas communication with the air guiding channel 10, so that the external gas is transported to the first drainage groove 4 and then evenly distributed over the entire circumference of the cleaning tank 1.

[0079] The first drainage groove 4 is arranged at the junction between the bottom and the side wall part of the convex part 2 and extends circumferentially around the cleaning tank 1 for a full circle. When the convex part 2 presses the object to be cleaned, the first drainage groove 4 still exists. That is to say, when the convex part 2 extends towards the bottom of the cleaning tank 1 and elongates to the position closest to the bottom of the cleaning tank 1 that it can reach, the groove structure of the first drainage groove 4 still exists, and the groove structure of the first drainage groove 4 will not be completely stretched into a planar structure. Refer to Figure 3 the embodiment shown. More specifically, when the convex part 2 moves towards the bottom of the cleaning tank 1, as the convex part 2 elongates or moves downward, the shape of the first drainage groove 4 will change, and the groove structure of the first drainage groove 4 will gradually become shallower from deeper. However, it should be noted that in the design of this application, even when the convex part 2 reaches the extreme position at the bottommost end it can reach, the groove structure of the first drainage groove 4 will not disappear, but will only change from a deep groove structure to a shallow groove structure. This ensures that when the convex part 2 presses the object to be cleaned for dehydration, the first drainage groove 4 can still guide and distribute the external gas to the entire circumference of the convex part 2, which can improve the dehydration efficiency and effect (in particular, making the dehydration degrees of different objects to be cleaned and different parts of the object to be cleaned consistent or close).

[0080] In addition, a dehydration port 6 is provided at the bottom of the cleaning tank 1, and it is connected to the suction part 8.

[0081] Figure 4 is Figure 3 a schematic structural view of a part of the laundry treatment device shown in Figure 4 It can be clearly seen from

[0082] Figure 3 the specific structure of the first drainage groove 4. After the external gas enters the first drainage groove 4 through the air guiding component, it flows between the first drainage groove 4 and the object to be cleaned in the direction indicated by the arrow, achieving uniform distribution over the entire circumference of the cleaning tank 1.

[0083] The structure of the air guiding component described in this embodiment, as well as the structure, position, and manner of arrangement of the air guiding channel and the external air inlet part included in the air guiding component, can be used in all embodiments of this application. Similarly, the structure and arrangement manner of the air guiding component described next can also be used in the above embodiments, and it is only described as illustrative rather than restrictive.

[0084] The laundry treating apparatus or the air guiding assembly further includes a pressure control valve, which is normally closed. When the negative pressure in the sealed chamber reaches a preset threshold, the pressure control valve opens, and external gas enters the sealed chamber through the air guiding assembly. When the negative pressure in the sealed chamber is lower than the preset threshold, the pressure control valve closes, and external gas cannot enter the sealed chamber.

[0085] The laundry treating apparatus may have a pressure detection module. When the pressure detection module detects that the negative pressure in the sealed chamber reaches the preset threshold, the pressure control valve opens, and external gas enters the sealed chamber through the air guiding assembly; when the pressure detection module detects that the negative pressure in the sealed chamber is lower than the preset threshold, the pressure control valve closes.

[0086] The pressure control valve may be a constant pressure valve. When the negative pressure in the sealed chamber reaches the pressure value required for the constant pressure valve to open, the constant pressure valve opens and simultaneously maintains the negative pressure in the sealed chamber, and external gas enters the sealed chamber through the air guiding assembly.

[0087] Figure 5 is a schematic diagram of an embodiment of the laundry treating apparatus according to the present application.

[0088] Figure 5 The parts in the embodiment shown in Figure 3 that are the same as those in the embodiment shown in Figure 3 will not be described in detail here. For example, for the air guiding assembly, the parts different from those in the embodiment shown in

[0089] will be described in detail here. Figure 5 As shown in

[0090] In Figure 5 the shown embodiment, the second drainage groove 13 is arranged on the side wall of the cleaning tank 1 and extends along the circumferential direction of the cleaning tank 1. The air guiding channel 10 of the air guiding assembly is in gas communication or directly communicated with the second drainage groove 13. The so-called direct communication includes that the air guiding channel 10 extends into the second drainage groove 13, so as to introduce external gas into the second drainage groove 13, and further enable the gas to be distributed in the second drainage groove 13, and then be evenly distributed over the entire circumference of the cleaning tank 1.

[0091] Figure 6 is a schematic diagram of an embodiment of the laundry treating apparatus according to the present application.

[0092] Figure 6 The parts in the embodiment shown in

[0093] that are the same as those in the above embodiment will not be described in detail here. For example, for the air guiding assembly, the parts different from those in the above embodiment will be described in detail here. Figure 6 As shown in Figure 3 andFigure 5 In the embodiments shown, there is one more drainage structure respectively, which is a combination of the drainage structures of the above two embodiments. In Figure 6 In the shown embodiment, the first drainage groove 4 is arranged at the bottom of the convex part 2 on the side opposite to the bottom of the cleaning tank 1 and extends along the circumferential direction of the cleaning tank 1, and the second drainage groove 13 is arranged on the side wall of the cleaning tank 1 and extends along the circumferential direction of the cleaning tank 1.

[0094] Through the air guiding assembly, external gas can enter the first drainage groove 4 and the second drainage groove 13 respectively, and then be distributed in the first drainage groove 4 and the second drainage groove 13, so as to achieve uniform distribution on the entire circumference of the cleaning tank 1.

[0095] It should be noted here that in Figures 1 to 3 , and Figures 5 to 6 shows the pressurizing and decompressing part 12. When the clothing treatment device is used as a washing machine, the pressurizing and decompressing part 12 is used to pressurize or decompress the convex part 2; when the clothing treatment device is used as a dehydrator, the pressurizing and decompressing part 12 can be omitted.

[0096] Figure 7 is a schematic diagram of an embodiment of the clothing treatment device according to the present application.

[0097] Figure 7 The main difference between the embodiment shown in

[0098] and the above embodiment lies in the position of the air guiding assembly. Figure 7 As shown in

[0099] Figure 8 is a schematic diagram of an embodiment of the clothing treatment device according to the present application. Figure 8 In the embodiment shown, both the drainage structure and the position of the air guiding assembly of the clothing treatment device are different from the above embodiments.

[0100] As Figure 8 shown in the clothing treatment device, the third drainage groove 14 is arranged at the bottom of the cleaning tank 1 opposite to the convex part 2 and extends along the circumferential direction of the cleaning tank 1, that is, the third drainage groove 14 is arranged on the inner bottom wall of the cleaning tank 1. Looking down from the opening of the clothing treatment device, it can be seen that the third drainage groove 14 is opened on the bottom of the cleaning tank 1. The air guiding assembly includes an external air introduction part 9 and an air guiding channel 10. The air guiding channel 10 is connected to the third drainage groove 14, and the external air introduction part 9 connects the air guiding channel 10 and external gas.

[0101] Figure 9 It is a schematic diagram of an embodiment of a laundry treatment apparatus according to the present application.

[0102] Figure 9 The main difference between the embodiment shown and the above embodiment lies in the position of the air guiding assembly.

[0103] As Figure 9 shown, the first drainage groove 4 is arranged at the bottom of the convex portion 2 on the side opposite to the bottom of the cleaning tank 1 and extends along the circumferential direction of the cleaning tank 1. The air guiding assembly includes an external air introduction portion 9 and an air guiding channel 10. The external air introduction portion 9 is in communication with the air guiding channel 10, and the air guiding channel 10 is arranged at the bottom of the side wall of the cleaning tank 1. External gas enters the cleaning tank from the air guiding channel 10 and is then distributed in the first drainage groove 4, realizing uniform distribution over the entire circumference of the cleaning tank 1.

[0104] From the above embodiments, it can be known that the drainage structure of the present application includes:

[0105] The first drainage groove 4 arranged at the bottom of the convex portion 2 on the side opposite to the bottom of the cleaning tank 1 and extending along the circumferential direction of the cleaning tank 1;

[0106] The second drainage groove 13 arranged on the side wall of the cleaning tank 1 and extending along the circumferential direction of the cleaning tank 1; and

[0107] The third drainage groove 14 arranged at the bottom of the cleaning tank 1 opposite to the convex portion 2 and extending along the circumferential direction of the cleaning tank 1.

[0108] The first drainage groove 4, the second drainage groove 13, and the third drainage groove 14 can be used alone in the laundry treatment apparatus, or can be combined separately or all together for use in the laundry treatment apparatus. The drainage structures shown in all embodiments are only illustrative descriptions of the present application and do not constitute limitations thereto.

[0109] In addition, the setting manner of the air guiding assembly is not limited to that shown in each embodiment. As long as it does not conflict with the conventional settings of other components of the laundry treatment apparatus, the positions and / or structures of the air guiding assemblies used in each embodiment can be interchanged or combined for use.

[0110] The above has introduced the present application in detail. For those of ordinary skill in the art, based on the idea of the embodiments of the present application, changes in the specific implementation manners and application scopes should not be considered as departing from the scope protected by the present application. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A laundry treating apparatus, comprising: a washing tub (1) for receiving an object to be washed and washing water and having an opening for putting the object to be washed therein; a lid assembly (11) covering the opening and forming a sealed chamber with the washing tub (1), the lid assembly (11) having a convex portion (2) protruding into the interior of the washing tub (1); a drainage passage connected to the washing tub (1) and for discharging the washing water; and a suction portion (8) provided in the drainage passage (7) for generating a negative pressure to suck the washing water out of the washing tub (1); a dehydration opening (6) is provided at the bottom of the washing tub (1), and the dehydration opening (6) is connected to the suction portion (8); characterized in that: the laundry treating apparatus further comprises: a gas guiding assembly for introducing external gas into the washing tub (1); and a drainage structure for uniformly distributing the introduced external gas over the entire circumference of the washing tub (1), the gas guiding assembly being in gas communication with the drainage structure for guiding the gas to the periphery of the washing tub (1) to improve the dehydration efficiency, the drainage structure includes a first drainage groove (4) disposed at the bottom of the convex portion (2) on the side opposite to the bottom of the washing tub (1) and extending along the circumferential direction of the washing tub (1), and the first drainage groove (4) is disposed at the boundary position between the bottom and the side wall portion of the convex portion (2).

2. A laundry treating apparatus, comprising: a washing tub (1) for receiving an object to be washed and washing water and having an opening for putting the object to be washed therein; a lid assembly (11) covering the opening and forming a sealed chamber with the washing tub (1), the lid assembly (11) having a convex portion (2) protruding into the interior of the washing tub (1); a drainage passage connected to the washing tub (1) and for discharging the washing water; and a suction portion (8) provided in the drainage passage (7) for generating a negative pressure to suck the washing water out of the washing tub (1); a dehydration opening (6) is provided at the bottom of the washing tub (1), and the dehydration opening (6) is connected to the suction portion (8); characterized in that: the laundry treating apparatus further comprises: a gas guiding assembly for introducing external gas into the washing tub (1); and a drainage structure for uniformly distributing the introduced external gas over the entire circumference of the washing tub (1), the gas guiding assembly being in gas communication with the drainage structure for guiding the gas to the periphery of the washing tub (1) to improve the dehydration efficiency, the drainage structure includes a third drainage groove (14) disposed at the bottom of the washing tub (1) opposite to the convex portion (2) and extending along the circumferential direction of the washing tub (1), and the gas guiding assembly is connected to the third drainage groove (14).

3. The laundry treating apparatus according to claim 1, characterized in that: the drainage structure includes: a second drainage groove (13) disposed on the side wall of the washing tub (1) and extending along the circumferential direction of the washing tub (1); and / or A third drainage groove (14) disposed at the bottom of the cleaning tank (1) opposite to the convex portion (2) and extending along the circumferential direction of the cleaning tank (1).

4. The laundry treating apparatus according to claim 2, wherein: The drainage structure includes: A first drainage groove (4) disposed at the bottom of the convex portion (2) opposite to the bottom of the cleaning tank (1) and extending along the circumferential direction of the cleaning tank (1); and / or A second drainage groove (13) disposed on the side wall of the cleaning tank (1) and extending along the circumferential direction of the cleaning tank (1).

5. The laundry treating apparatus according to claim 1, wherein: The first drainage groove (4) extends entirely around the circumferential direction of the cleaning tank (1), and the first drainage groove (4) still exists when the convex portion (2) presses the object to be cleaned.

6. The laundry treating apparatus according to any one of claims 1 to 5, wherein: The air guiding assembly includes an external air introducing portion (9) and an air guiding channel (10), and external air can enter the air guiding channel (10) through the external air introducing portion (9), and then enter the cleaning tank (1).

7. The laundry treating apparatus according to claim 6, wherein: The opening at one end of the air guiding channel (10) not connected to the external air introducing portion (9) is exposed inside the cleaning tank (1), the air guiding channel (10) is in gas communication with the drainage structure, and the external air introducing portion (9) is provided on the cover assembly (11) or the cleaning tank (1).

8. The laundry treating apparatus according to claim 7, wherein: The air guiding channel (10) is a groove provided on the side wall of the convex portion (2) and / or a groove provided on the inner side wall of the cleaning tank (1).

9. The laundry treating apparatus according to claim 1 or 2, wherein: The air guiding assembly further includes a pressure control valve, the pressure control valve is normally closed, and when the negative pressure in the sealed chamber reaches a preset threshold value, the pressure control valve opens, and external air enters the sealed chamber through the air guiding assembly.

10. The laundry treating apparatus according to claim 9, wherein: The laundry treating apparatus has a pressure detection module. When the pressure detection module detects that the negative pressure in the sealed chamber reaches the preset threshold value, the pressure control valve opens, and external air enters the sealed chamber through the air guiding assembly; when the pressure detection module detects that the negative pressure in the sealed chamber is lower than the preset threshold value, the pressure control valve closes.

11. The laundry treating apparatus according to claim 9, wherein: The pressure control valve is a constant pressure valve. When the negative pressure in the sealed chamber reaches the pressure value required for the constant pressure valve to open, the constant pressure valve opens and simultaneously maintains the negative pressure in the sealed chamber, and external air enters the sealed chamber through the air guiding assembly.

12. The laundry treating apparatus according to claim 1, wherein: The air guiding assembly includes an external air inlet part (9) and an air guiding channel (10). The external air inlet part (9) is arranged on the lid (15) of the lid assembly (11), and the air guiding channel (10) gas-connects the external air inlet part (9) and the first drainage groove (4).

13. The laundry treating apparatus according to claim 2, wherein: The air guiding assembly includes an external air inlet part (9) and an air guiding channel (10). The air guiding channel (10) is connected to the third drainage groove (14), and the external air inlet part (9) connects the air guiding channel (10) and the external gas.

14. The laundry treating apparatus according to any one of claims 1 to 5, wherein: The outer edge part of the convex part (2) abuts against the side wall of the cleaning tank (1) to form the sealed chamber.

15. The laundry treating apparatus according to any one of claims 1 to 5, wherein: The convex part (2) is a flexible film body.

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