Sterilizing structure for multi-drum clothes processing device and multi-drum clothes processing device

By introducing a sterilization structure into the multi-tube clothing treatment device, sterilization water is supplied to multiple water buckets by using the switching part and the sterilization part, the problem of pollution in the ventilation part is solved, the sterilization effect of the multi-tube clothing treatment device is achieved, and the internal space is saved.

CN223214319UActive Publication Date: 2025-08-12PANASONIC APPLIANCES (CHINA) CO LTD +1
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Patent Information

Application Number
CN202422582968.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-08-12
Estimated Expiration
2034-10-25

AI Technical Summary

Technical Problem

In the existing multi-tube clothing treatment device, the ventilation part is easily contaminated by liquid and foam in the bucket, and an effective cleaning solution is lacking.

Method used

The sterilization structure is adopted, including a switching part and a sterilization part. The flow direction of the sterilization water is controlled by the switching part, and the sterilization water is supplied to a plurality of water tanks. The sterilization part is flushed through the sterilization part, and silver ions are generated by the silver ion generator to form sterilization water.

Benefits of technology

The sterilization of multiple water buckets and ventilation parts is realized, which reduces pollution of the ventilation parts, saves the internal space of the device, and uses the existing additive supply channel as the supply channel for sterilization water.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a sterilization structure for a multi-drum clothes processing device and the multi-drum clothes processing device. The multi-drum clothes processing device comprises at least a first water containing barrel and a second water containing barrel. The multi-barrel clothes processing device further comprises at least one ventilation part, the ventilation part is connected with at least one water containing barrel, and the degerming structure comprises a switching part and a degerming part. The sterilization part is connected with a water inlet valve so as to supply sterilization water to the multi-drum clothes processing device. The degerming unit connects the first tub and the second tub via the switching unit so as to supply degerming water into the first tub and the second tub. And the switching part is used for controlling the on-off of a pipeline, so that the degerming water flowing out of the degerming part can flow into the first water containing barrel or the second water containing barrel. The sterilization part is connected with the ventilation part through the switching part, so that the ventilation part is flushed by sterilization water.
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Description

Technical Field

[0001] The present application relates to the technical field of clothing processing, and in particular to a sterilization structure for a multi-drum clothing processing device and a multi-drum clothing processing device. Background Art

[0002] The water tub and other components of the clothing processing device need to be connected to the external atmospheric environment to balance the internal air pressure. Some clothing processing devices are provided with a vent that is connected to the atmospheric environment, and the vent is then connected to the water tub and other components that need to balance the air pressure. However, during the operation of the clothing processing device, liquid, foam, etc. in the water tub and other components may enter the vent along the ventilation pipe, thereby causing contamination of the vent. In particular, as users' demand for clothing processing gradually increases, some clothing processing devices are designed with multiple water tubs to meet users' clothing processing needs, and multiple water tubs all need to be connected to the vent. Providing multiple water tubs will further increase the risk of contamination of the vent. Existing clothing processing devices, especially multi-drum clothing processing devices, do not have an effective cleaning solution for the vent, and improvement is urgently needed. Utility Model Content

[0003] This application is made in view of the above-mentioned state of the prior art. An object of this application is to provide a sterilization structure for a multi-tub laundry treatment device that can flush a ventilation portion while supplying sterilized water to a tub.

[0004] The present application also provides a multi-drum clothing processing device including the above-mentioned sterilization structure.

[0005] The present application provides a sterilization structure for a multi-drum laundry processing device, wherein the multi-drum laundry processing device includes at least a first water tub and a second water tub, and the multi-drum laundry processing device further includes at least one vent connected to the at least one water tub. The sterilization structure includes a switching portion and a sterilization portion.

[0006] The sterilization unit is connected to a water inlet valve to supply sterilizing water to the multi-drum laundry processing device.

[0007] The sterilizing unit connects the first tub and the second tub via the switching unit to supply sterilized water into the first tub and the second tub.

[0008] The switching part is used to control the on-off of the pipeline so that the sterilized water flowing out of the sterilization part can flow into the first water tub or the second water tub.

[0009] The sterilization section is connected to the ventilation section via the switching section so that the ventilation section is flushed with sterilizing water.

[0010] In at least one possible embodiment, the vent is connected to at least one water tub so that the sterilizing water flushes the vent before entering the water tub.

[0011] In at least one possible embodiment, the multi-drum laundry processing device further includes a first secondary extraction mechanism, a second secondary extraction mechanism, and an additive accommodating portion, wherein the first secondary extraction mechanism and the second secondary extraction mechanism are connected to the additive accommodating portion.

[0012] The switching portion is connected to the first tub via the first two-stage pumping mechanism; and the switching portion is connected to the second tub via the second two-stage pumping mechanism.

[0013] In at least one possible embodiment, the switching unit includes a switching valve.

[0014] The switching portion enables the sterilization structure to simultaneously form a passage between the sterilization portion and only one tub, so that the sterilization portion is communicated with only the first tub or the second tub.

[0015] In at least one possible embodiment, the sterilization part includes a silver ion generating device, which can generate silver ions for sterilization, and the silver ions can enter water to form sterilized water.

[0016] In at least one possible embodiment, the silver ion generating device includes a silver sheet, and current is passed through the silver sheet to generate silver ions.

[0017] In at least one possible embodiment, the multi-drum laundry processing device further includes a third water tub, and the sterilization unit is connected to the third water tub via the switching unit to supply sterilizing water into the third water tub.

[0018] The switching part is used to control the opening and closing of the pipeline so that the sterilizing water flowing out of the sterilizing part can flow into one of the first tub, the second tub, and the third tub.

[0019] In at least one possible embodiment, the multi-drum laundry processing device further includes an extended water tub, and the sterilization unit is connected to the extended water tub via the switching unit to supply sterilizing water into the extended water tub.

[0020] The switching part is used to control the opening and closing of the pipeline so that the sterilized water flowing out of the sterilization part can flow into one of the first water tub, the second water tub, the third water tub and the expansion water tub.

[0021] In at least one possible embodiment, the vent portion includes an overflow chamber for accommodating liquid and / or foam, and the sterilized water flows through the overflow chamber when flushing the vent portion, so that the sterilized water flushes the overflow chamber.

[0022] The present application also provides a multi-drum laundry processing device, comprising:

[0023] The first water tub, the second water tub and at least one ventilator, and the aforementioned sterilization structure for the multi-drum laundry processing device,

[0024] The ventilation part is connected to the external atmosphere, and the sterilization part is connected to the ventilation part via the switching part.

[0025] Also, at least one of the first tub and the second tub is connected to the vent to balance air pressure within the tub.

[0026] In at least one possible embodiment, the multi-drum laundry processing device further includes a first ventilator and a second ventilator.

[0027] The switching part is connected to the first water tub via the first vent, so that the sterilized water flushes the first vent before entering the first water tub;

[0028] The switching part is connected to the second water tub via the second vent, so that the sterilized water flushes the second vent and then enters the second water tub.

[0029] In at least one possible embodiment, the multi-drum laundry processing device further includes an additive receiving portion.

[0030] The additive container is connected to at least one of the vents to balance the air pressure in the additive container. The present application provides a sterilization structure for a multi-drum laundry processing device and a multi-drum laundry processing device.

[0031] The sterilization structure for a multi-drum laundry processing device and the multi-drum laundry processing device provided herein can supply sterilized water to multiple water tubs via a switching unit, even when only one sterilization unit capable of producing sterilized water is provided. When the laundry processing device is provided with a vent connected to the water tub, foam, liquid, etc. within the water tub may enter the vent via the vent pipe. The sterilization unit is connected to the vent via the switching unit, allowing the vent to flush any contaminated vent, thereby sterilizing multiple water tubs and vents using a single sterilization unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a simplified piping diagram of a multi-drum laundry processing device according to one embodiment of the present application.

[0033] Description of Reference Numerals

[0034] 10 Additive injection unit

[0035] 11 Care agent injection unit

[0036] 12 Detergent injection part

[0037] 13 Softener injection part

[0038] 20 First-level extraction agency

[0039] 30 Additive storage part

[0040] 41 First ventilation part

[0041] 42 Second ventilation section

[0042] 43 Third ventilation section

[0043] 50 Switching unit

[0044] 61 First and Second Level Extraction Mechanisms

[0045] 62 Secondary Extraction Agency

[0046] 63 Third and Second Level Extraction Agency

[0047] 71 First Water Bucket

[0048] 72 Second Water Bucket

[0049] 73 The third water bucket

[0050] 80 Sterilization Department

[0051] FV1 First water inlet valve

[0052] FV2 Second water inlet valve

[0053] FV3 third water inlet valve

[0054] FV4 Fourth water inlet valve

[0055] FV5 Fifth Water Inlet Valve

[0056] L1: First water channel of the receiving part

[0057] L2 accommodating part second water channel DETAILED DESCRIPTION

[0058] The following describes exemplary embodiments of the present application with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible embodiments of the present application, nor to limit the scope of the present application.

[0059] The embodiment of the present application provides a sterilization structure for a multi-drum laundry processing device (hereinafter sometimes referred to as "sterilization structure"), such as Figure 1 As shown, the multi-drum laundry processing device may include at least a first tub 71 and a second tub 72. The multi-drum laundry processing device may also include at least one vent, which may be connected to at least one tub (the first tub 71 or the second tub 72). The sterilization structure may include a switching unit 50 and a sterilization unit 80. The sterilization unit 80 may be connected to an inlet valve (e.g., the second inlet valve FV2 in the figure) to supply sterilized water to the multi-drum laundry processing device. The sterilization unit 80 may be connected to the first tub 71 and the second tub 72 via the switching unit 50 to supply sterilized water to the first tub 71 and the second tub 72 (directly supplying sterilized water). The switching unit 50 may be used to control the opening and closing of the pipeline so that the sterilized water flowing out of the sterilization unit 80 can flow only into the first tub 71 or the second tub 72. In other words, the switching unit 50 allows the sterilization unit 80 to be connected to only one tub at a time. The sterilizing section 80 may be connected to a ventilator via a switching section 50 so that the ventilator is flushed with sterilizing water.

[0060] It will be appreciated that this technical solution allows for the supply of sterilized water to multiple tubs via the switching unit 50, even with only one sterilizing unit 80 capable of producing sterilized water. If the laundry treatment device is equipped with a vent connected to the tub, foam, liquid, etc. within the tub may enter the vent via the vent pipe. Sterilizing unit 80, connected to the vent via the switching unit 50, can flush the potentially contaminated vent, allowing sterilization of both the tub and the vent using a single sterilizing unit.

[0061] Preferably, the vent can be further connected to at least one water tub, allowing sterilizing water to enter the tub after flushing the vent. By flushing the vent with sterilizing water and then passing the sterilizing water into the tub, both the tub and the vent can be sterilized simultaneously. This solution solves the problem of sterilizing water draining from the vent while fully utilizing the sterilizing water.

[0062] The multi-drum laundry processing device may further include a first and second-level extraction mechanism 61, a second and second-level extraction mechanism 62 and an additive holding portion 30. The first and second-level extraction mechanism 61 and the second and second-level extraction mechanism 62 may be connected to the additive holding portion 30. The switching portion 50 may be connected to the first water tub 71 via the first and second-level extraction mechanism 61. The switching portion 50 may be connected to the second water tub 72 via the second and second-level extraction mechanism 62. A secondary extraction mechanism may be provided in the multi-drum laundry processing device to extract additives (additive diluent) from the additive holding portion 30 and supply them to the corresponding water tub. In this embodiment, the flow path for supplying additives from the additive holding portion 30 to the water tub via the secondary extraction mechanism may be utilized as a supply path for sterilizing water at the same time, so as to save the internal space of the multi-drum laundry processing device.

[0063] The first water tub 71 can also be connected to the water inlet valve (third water inlet valve FV3) via the first secondary pumping mechanism 61, and the second water tub 72 can also be connected to the water inlet valve (fourth water inlet valve FV4) via the second secondary pumping mechanism 62 to achieve normal water inflow into the water tub.

[0064] Preferably, at least one of the secondary extraction mechanisms (including the first secondary extraction mechanism 61, the second secondary extraction mechanism 62 and the third secondary extraction mechanism 63) may include a venturi tube, which may be connected to a water inlet valve (for example, Figure 1 In the embodiment, the first and second extraction mechanisms 61 can be connected to the third water inlet valve FV3, the second and second extraction mechanisms 62 can be connected to the fourth water inlet valve FV4, and the third and second extraction mechanisms 63 can be connected to the fifth water inlet valve FV5 and the water tub. The venturi tube can be formed with a negative pressure interface that can be connected to the additive container 30. When water flows through the venturi tube, it generates negative pressure, extracting the liquid in the additive container 30 and supplying it to the water tub. Using a venturi tube can utilize the negative pressure generated when supplying water to the water tub to extract the liquid (the additive diluent) in the additive container 30. This reduces manufacturing costs and energy consumption compared to pump-type extraction mechanisms. The venturi tube operates by utilizing the Venturi effect generated by its pipe structure, making it less prone to failure and less prone to leakage than pump-type extraction mechanisms.

[0065] Optionally, at least one of the secondary extraction mechanisms (including the first secondary extraction mechanism 61, the second secondary extraction mechanism 62, and the third secondary extraction mechanism 63) may include a pump, which may be connected to the additive container 30 and the water tub to supply the liquid in the additive container 30 to the water tub. When at least two water tubs are stacked vertically, only some of the secondary extraction mechanisms may use a venturi tube (for example, the secondary extraction mechanism connected to the relatively lower water tub may include a venturi tube), while the remaining secondary extraction mechanisms may use a pump.

[0066] The switching unit 50 may include a switching valve to allow the sterilization structure to simultaneously establish a passage between the sterilization unit 80 and only one tub, even if the sterilization unit 80 is connected to only the first tub 71 or the second tub 72. The switching unit 50, which can only simultaneously establish a single passage, allows the sterilization unit to be connected to only one tub at a time, allowing the sterilized water produced by the sterilization unit 80 to flow entirely into the one tub without undesirably flowing into other tubs, thereby achieving precise sterilized water supply.

[0067] Preferably, the switching unit 50 may also be provided with a check valve according to the actual needs of the pipeline. It is understood that providing a check valve can reduce or avoid water leakage, air leakage, etc. in the corresponding pipeline, and in particular, can reduce or avoid the influence of water leakage or air leakage of the pipeline when other pipelines are operating (with liquid passing through).

[0068] Furthermore, the sterilization section 80 may include a silver ion generator that can generate silver ions for sterilization, which can enter the water to form sterilized water. The silver ion sterilization method is suitable for this sterilization structure, so that water flowing through the sterilization section forms sterilized water containing silver ions. It is understood that silver ions have an adsorption effect on microorganisms in the liquid. After the microorganisms are adsorbed by the silver ions, the microorganisms' respiratory enzymes lose their effectiveness, causing the microorganisms to die rapidly. In one experimental example, as long as there were only 200 millionths of a milligram of silver ions per liter of water, most of the bacteria in the water could be killed.

[0069] The silver ion generating device may include a silver sheet that can be connected to a circuit to flow an electric current, thereby generating silver ions. Generating silver ions by electrolyzing the silver sheet is more suitable for clothing treatment devices than adding silver-containing reagents. Using silver sheets to generate silver ions can avoid or reduce the introduction of impurity ions and eliminate the need for frequent addition of silver-containing reagents to the clothing treatment device.

[0070] Furthermore, the multi-drum laundry treating apparatus may further include a third water tub 73. The third water tub 73 may also be connected to a water inlet valve (fifth water inlet valve FV5) via a third secondary extraction mechanism 63.

[0071] The sterilizing unit 80 can be connected to the third tub 73 via the switching unit 50 to supply sterilized water into the third tub 73. The switching unit 50 can be used to control the on / off connection of the pipeline, allowing the sterilized water flowing out of the sterilizing unit 80 to flow into one of the first tub 71, the second tub 72, or the third tub 73. This solution can meet the sterilizing water supply requirements of a multi-drum laundry processing device with three tubs, and can accommodate more complex tub and clothing sterilization operations.

[0072] The multi-drum laundry processing device can also include an extended water tub. The sterilizing unit 80 can be connected to the extended water tub via a switch 50 to supply sterilizing water into the extended water tub. The switch 50 can be used to control the on / off flow of the pipeline, allowing the sterilizing water flowing from the sterilizing unit 80 to flow into one of the first water tub 71, the second water tub 72, the third water tub 73, and the extended water tub. This solution can meet the sterilizing water supply requirements of a multi-drum laundry processing device with more water tubs and can accommodate more complex water tub and clothing sterilization operations.

[0073] Preferably, the vent portion may include an overflow chamber for holding liquid and / or foam. Sterilized water flows through the overflow chamber when flushing the vent portion, thereby flushing the overflow chamber with the sterilized water. The overflow chamber of the vent portion, which temporarily holds liquid and foam overflowing from the water tank and additive storage portion, is the primary structure of the vent portion that may be contaminated. Passing sterilized water through the overflow chamber effectively cleans these potentially contaminated structures.

[0074] Embodiments of the present application also provide a multi-drum laundry processing device, comprising a first tub 71, a second tub 72, and at least one vent, as well as the aforementioned sterilization structure for a multi-drum laundry processing device. The vent can communicate with the outside atmosphere, and the sterilization unit 80 can be connected to the vent via a switching unit 50. Furthermore, at least one of the first tub 71 and the second tub 72 can be connected to the vent to balance the air pressure within the tub. While connecting the tubs to the vent can achieve pressure balance within the tubs, liquid or foam within the tubs may enter the vent through the piping. By indirectly connecting the sterilization unit to the vent to supply sterilizing water to the vent, the vent can be effectively cleaned.

[0075] One or more vents may be provided in a multi-drum laundry processing device. Multiple tubs may be connected to the same vent, or each tub may be connected to a separate vent. Of course, this does not preclude the possibility that one tub is connected to a separate vent, while the remaining tubs are connected to separate vents.

[0076] Optionally, the multi-drum laundry processing device may include a first vent 41 and a second vent 42. The switching portion 50 may be connected to the first water tub 71 via the first vent 41, allowing sterilizing water to rinse the first vent 41 before entering the first water tub 71. The switching portion 50 may be connected to the second water tub 72 via the second vent 42, allowing sterilizing water to rinse the second vent 42 before entering the second water tub 72. The same connection structure may be used when more vents and water tubs are provided, for example, a third vent 43 connected to a third water tub 73 may be added. Providing multiple vents corresponding to multiple water tubs can make the ventilation structure of the water tubs more flexible, avoid excessively long ventilation ducts, and thus optimize the internal structure of the multi-drum laundry processing device.

[0077] The vent portion (at least one) can be integrated with the secondary extraction mechanism (at least one), that is, the vent portion and the secondary extraction mechanism can both be arranged above at least one water tub to further save space and make the structure more compact.

[0078] The multi-drum laundry processing device may further include an additive container 30, which may be connected to at least one vent to balance the air pressure within the additive container 30. When water is added to the additive container 30 to dilute the additive, foam may form within the additive container 30 and enter the vent through the vent duct. Any contamination of the vent caused by the additive container 30 can also be flushed out with sterilizing water from the sterilization unit.

[0079] The laundry treatment apparatus may further include an additive injection unit 10 and a primary extraction mechanism 20. The additive injection unit 10 may be connected to an additive storage unit 30 via the primary extraction mechanism 20. The primary extraction mechanism 20 may include a pump. The additive storage unit 30 may be directly or indirectly connected to a first water inlet valve FV1 to allow water to flow into the additive storage unit 30. This water flow may dilute and dissolve the additive in the additive storage unit, allowing the additive to enter the secondary extraction mechanism along with the water flow. The secondary extraction mechanism (which may include a venturi tube or a pump) may generate a suction force, allowing the additive to enter the secondary extraction mechanism along with the water flow.

[0080] Preferably, the first water inlet valve FV1 can be connected to the additive holding part 30 through the first water path L1 of the holding part and the second water path L2 of the holding part, respectively. The first water path L1 of the holding part can pass through the additive injection part 10 and the first-level extraction mechanism 20, that is, indirectly connected. The second water path L2 of the holding part can not pass through the additive injection part 10 and the first-level extraction mechanism 20, that is, directly connected. The first water path L1 of the holding part can add water to the additive holding part 30 to dilute the additive, and can also flush the pipeline, the additive injection part 10 and the first-level extraction mechanism 20 after the additive is added. The second water path L2 of the holding part can share the water flow when the water flow of the first water inlet valve is large, thereby improving the stability of the operation.

[0081] The following briefly describes some of the beneficial effects of the above-mentioned embodiments of the present application.

[0082] The sterilization structure for a clothing treatment device and the clothing treatment device provided in the embodiments of the present application can supply sterilized water to multiple water tubs via a switching portion when only one sterilization portion capable of producing sterilized water is provided. When the clothing treatment device is provided with a ventilation portion connected to the water tub, foam, liquid, etc. in the water tub may enter the ventilation portion through the ventilation pipe, etc. The sterilization portion is connected to the ventilation portion via the switching portion, and the ventilation portion that may be contaminated can be flushed, that is, the water tub and the ventilation portion can be sterilized by one sterilization portion. In addition, the sterilization structure can utilize the flow channel that supplies additives from the additive holding portion to the water tub via the secondary extraction mechanism as a supply flow channel for sterilized water, thereby saving the internal space of the multi-drum clothing treatment device.

[0083] It is understood that in this application, when the number of parts or components is not specifically limited, the number may be one or more, and the term "plurality" herein refers to two or more. Where the number of parts or components is shown in the drawings and / or described in the specification as a specific number, such as two, three, or four, the specific number is generally illustrative and not restrictive, and may be understood as a plurality, i.e., two or more. However, this does not mean that this application excludes the case of one.

[0084] It should be understood that the above embodiments are merely exemplary and are not intended to limit the present application. Those skilled in the art may make various modifications and changes to the above embodiments based on the teachings of the present application without departing from the scope of the present application.

Claims

1. A sterilization structure for a multi-drum laundry processing device, the multi-drum laundry processing device comprising at least a first water tub and a second water tub, characterized in that: The multi-drum laundry processing device further includes at least one ventilator connected to at least one water tub, and the sterilization structure includes a switching part and a sterilization part. The sterilization unit is connected to a water inlet valve to supply sterilizing water to the multi-drum laundry processing device. The sterilizing unit connects the first tub and the second tub via the switching unit to supply sterilized water into the first tub and the second tub. The switching part is used to control the on-off of the pipeline so that the sterilized water flowing out of the sterilization part can flow into the first water tub or the second water tub. The sterilization section is connected to the ventilation section via the switching section so that the ventilation section is flushed with sterilizing water.

2. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The vent is connected to at least one water tub so that sterilized water flushes the vent before entering the water tub.

3. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The multi-drum laundry processing device further includes a first secondary extraction mechanism, a second secondary extraction mechanism and an additive storage portion, wherein the first secondary extraction mechanism and the second secondary extraction mechanism are connected to the additive storage portion. The switching portion is connected to the first tub via the first two-stage pumping mechanism; and the switching portion is connected to the second tub via the second two-stage pumping mechanism.

4. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The switching unit includes a switching valve, The switching portion enables the sterilization structure to simultaneously form a passage between the sterilization portion and only one tub, so that the sterilization portion is communicated with only the first tub or the second tub.

5. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The sterilization part includes a silver ion generator, which can generate silver ions for sterilization. The silver ions can enter water to form sterilized water.

6. The sterilization structure for a multi-drum laundry processing device according to claim 5, characterized in that: The silver ion generating device comprises a silver sheet, and current is passed through the silver sheet to generate silver ions.

7. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The multi-drum laundry processing device further includes a third water tub, and the sterilization unit is connected to the third water tub via the switching unit to supply sterilized water into the third water tub. The switching part is used to control the opening and closing of the pipeline so that the sterilizing water flowing out of the sterilizing part can flow into one of the first tub, the second tub, and the third tub.

8. The sterilization structure for a multi-drum laundry processing device according to claim 7, characterized in that: The multi-drum laundry processing device further includes an expanded water tub, and the sterilization unit is connected to the expanded water tub via the switching unit to supply sterilizing water into the expanded water tub. The switching part is used to control the opening and closing of the pipeline so that the sterilizing water flowing out of the sterilizing part can flow into one of the first tub, the second tub, the third tub and the extended tub.

9. The sterilization structure for a multi-drum laundry processing device according to claim 1, characterized in that: The vent portion includes an overflow cavity for accommodating liquid and / or foam. When sterilizing water flushes the vent portion, it flows through the overflow cavity, so that the sterilizing water flushes the overflow cavity.

10. A multi-drum laundry processing device, characterized in that: include: a first tub, a second tub, and at least one vent, and The sterilization structure for a multi-drum laundry processing device according to any one of claims 1 to 9, The ventilation part is connected to the external atmosphere, and the sterilization part is connected to the ventilation part via the switching part. Also, at least one of the first tub and the second tub is connected to the vent to balance air pressure within the tub.

11. The multi-drum laundry processing device according to claim 10, characterized in that: comprising a first vent and a second vent, The switching part is connected to the first water tub via the first vent, so that the sterilized water flushes the first vent before entering the first water tub; The switching part is connected to the second water tub via the second vent, so that the sterilized water flushes the second vent and then enters the second water tub.

12. The multi-drum laundry processing device according to claim 10, characterized in that: It also includes an additive receiving portion, The additive containing portion is connected to at least one of the vents to balance the air pressure in the additive containing portion.