CN110396797B - Drainage control method for clothes treatment device and multi-drum clothes treatment device - Google Patents

Drainage control method for clothes treatment device and multi-drum clothes treatment device Download PDF

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Publication number
CN110396797B
CN110396797B CN201810371815.9A CN201810371815A CN110396797B CN 110396797 B CN110396797 B CN 110396797B CN 201810371815 A CN201810371815 A CN 201810371815A CN 110396797 B CN110396797 B CN 110396797B
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washing drum
washing
drainage
drum
pipeline
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CN110396797A (en
Inventor
吴军
李文伟
潘光辉
王育宝
王光锋
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Qingdao Haier Washing Electric Appliance Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Washing Electric Appliance Co Ltd
Haier Smart Home Co Ltd
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Priority to CN201810371815.9A priority Critical patent/CN110396797B/en
Priority to PCT/CN2019/081471 priority patent/WO2019205912A1/en
Publication of CN110396797A publication Critical patent/CN110396797A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F29/00Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus
    • D06F29/02Combinations of a washing machine with other separate apparatus in a common frame or the like, e.g. with rinsing apparatus with liquid-extracting apparatus
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08Liquid supply or discharge arrangements
    • D06F39/083Liquid discharge or recirculation arrangements

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The invention discloses a drainage control method of a clothes treatment device and a multi-drum clothes treatment device, wherein the clothes treatment device at least comprises a first washing drum and a second washing drum, and drainage pipelines of the first washing drum and the second washing drum are communicated and respectively and independently control the opening and closing of the drainage pipelines; when the first washing drum reaches the drainage process, judging whether the drainage pipeline of the second washing drum is opened, if so, waiting for the drainage pipeline of the second washing drum to be closed and then opening the drainage pipeline of the first washing drum; otherwise, the drain line of the first washing drum is opened. The invention solves the problem that when a multi-drum clothes treatment device uses a common drainage pipeline for drainage, the washing water in other washing drums flows back to the washing drums to cause clothes pollution, and particularly avoids the problem that the washing water in the upper washing drum flows back to the lower washing drum when the washing drums arranged up and down drain or dewater.

Description

Drainage control method for clothes treatment device and multi-drum clothes treatment device
Technical Field
The invention belongs to the field of washing machine equipment, and particularly relates to a drainage control method of a clothes treatment device and a multi-drum clothes treatment device.
Background
At present, most of the drum washing machines on the market only have one washing drum. As the health consciousness of people is strengthened, more and more users need to wash different types of laundry separately or wash a small amount of laundry in time. Along with the improvement of the quality of life of people, the hygiene consciousness is gradually improved, and particularly in the aspect of household clothes washing, more and more people wash clothes separately. If the existing washing machine adopts a mode of washing clothes for many times, the requirement is difficult to meet in the aspect of washing time; if two or more washing machines are purchased to separately and simultaneously wash, not only can great waste of energy and water resources be brought, but also the occupied space is large, and the washing machine is not suitable for household use. Therefore, the above needs can be satisfied by a multi-drum washing machine, solving the problem of waste of energy, water and space.
Patent 201010117002.0 discloses a control method of a washing machine comprising a first washing tub and a second washing tub, the method comprising the steps of: receiving a first operation instruction requiring a water supply procedure or a water discharge procedure to be performed in the first washing tub; determining whether the same operation instruction is being performed in the second washing tub; determining that the first operation instruction cannot be executed while the same operation instruction is being executed in the second washing tub; determining which one of the first and second washing tubs has a shorter remaining washing time when the same operation command requiring the water supply procedure or the water discharge procedure is simultaneously input into the first and second washing tubs; and preferentially performing the water supply process or the water discharge process in the washing tub having a shorter remaining washing time.
Aiming at the design of the multi-drum washing machine, the washing, dewatering and draining processes of the multi-drum washing machine are independent, and when one washing drum is correspondingly operated, the operation state of other washing drums does not need to be considered. However, in most households, there is only one drain pipe at the place where the washing machine is placed, and therefore, different washing drums of such a multi-drum washing machine need to share the same drain pipe for drainage. Under normal conditions, the drainage of different washing drums cannot affect each other, but when a sewer pipe or a drainage pump for upper drainage fails, the washing water of other washing drums flows back into the washing drum from the drainage pipe very easily. Especially, the washing drums arranged up and down are easy to cause the condition that the washing water in the upper washing drum flows back to the lower washing drum from the drainage pipeline of the lower washing drum, thereby not only polluting the clothes in the drums, but also easily causing the faults of water leakage and the like.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a drainage control method of a clothes treatment device and a multi-drum clothes treatment device, which solve the problem that when the multi-drum clothes treatment device uses a common drainage pipeline for drainage, the washing water in other washing drums flows back to the washing drums to cause clothes pollution, and particularly avoid the problem that the washing water in an upper washing drum flows back to the lower washing drum when the washing drums arranged up and down are used for drainage or dehydration.
In order to realize the purpose, the invention adopts the following technical scheme:
a method for controlling drainage of a clothes treatment device, wherein the clothes treatment device at least comprises a first washing drum and a second washing drum, drainage pipelines of the first washing drum and the second washing drum are communicated, and the drainage pipelines are respectively and independently controlled to be opened and closed; when the first washing drum reaches the drainage process, judging whether the drainage pipeline of the second washing drum is opened, if so, waiting for the drainage pipeline of the second washing drum to be closed and then opening the drainage pipeline of the first washing drum; otherwise, the drain line of the first washing drum is opened.
Further, when the first washing drum reaches the drainage process, if the drainage pipeline of the second washing drum is opened and the drainage process is in progress, the drainage pipeline of the first washing drum is opened after the second washing drum is emptied and the drainage pipeline of the second washing drum is closed;
preferably, the drain line of the second washing drum can be opened after the washing water in the first washing drum is drained.
Further, when the second washing drum reaches the drainage process, judging whether the drainage of the first washing drum is in progress, if so, opening a drainage pipeline of the second washing drum after the first washing drum is emptied; otherwise, the drain line of the second washing drum is opened.
Further, in the speed increasing process of the first washing drum from low-rotation-speed dehydration to high-rotation-speed dehydration, the drainage pipeline of the second washing drum is closed.
Preferably, when the first washing drum is dehydrated and stabilized in a high-rotation-speed dehydration state, the second washing drum drainage pipeline can be opened.
Further, before the first washing drum is switched from low-rotation-speed dehydration to high-rotation-speed dehydration in advance, whether a drainage pipeline of the second washing drum is closed is judged, if yes, the first washing drum is converted from low-rotation-speed dehydration to high-rotation-speed dehydration, and finally high-rotation-speed dehydration is achieved; otherwise, the first washing drum keeps a low-speed dehydration state.
Further, before the first washing drum is switched from the low-rotation-speed dehydration to the high-rotation-speed dehydration in advance, if the drainage pipeline of the second washing drum is opened and the drainage process is in progress, after the second washing drum is emptied and the drainage pipeline of the second washing drum is closed, the first washing drum is changed from the low-rotation-speed dehydration to the high-rotation-speed dehydration, and finally the high-rotation-speed dehydration is achieved.
A multi-drum clothes treatment device applying the drainage control method of the clothes treatment device at least comprises a first washing drum and a second washing drum, the drainage pipelines of the first washing drum and the second washing drum are respectively controlled by independent control devices to switch the on/off states of the drainage pipelines, and the drainage pipelines of the first washing drum and the second washing drum are converged in the same general drainage pipeline and drain the washing water out of a machine body through the general drainage pipeline.
Further, the multi-drum clothes treatment device is an upper drainage clothes treatment device, the main drainage pipe is provided with a drainage pump, and the drainage pump is used for pumping the washing water in the main drainage pipe out of the machine body to finish the drainage process of the clothes treatment device.
Furthermore, the control device is a drain valve, and the drain pipeline of the first washing barrel and the drain pipeline of the second washing barrel respectively control the on-off of the respective drain pipelines through the drain valves arranged on the respective drain pipelines.
Further, the drainage height of the first washing drum is higher than that of the second washing drum
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The invention particularly provides a control method for a drainage process in a multi-drum clothes treatment device. A control method for adjusting the opening/closing state of the drainage pipeline of other washing cylinders when the washing cylinders are about to perform drainage operation is added. The different drainage processes are finely operated, so that the condition that the washing water in different washing drums is mixed or the washing water in the upper washing drum flows back to the lower washing drum can be practically avoided under different drainage states. Especially, on the control of the lower washing drum which is easy to cause water flow to flow backwards, the control process of closing the drain valve in time after the lower washing drum is emptied is increased, and the risk that the washing water flows backwards to the lower washing drum when the upper washing drum drains water is reduced.
The invention also makes a targeted design for switching the opening/closing state of the drain pipe in the dehydration process at different rotating speeds, so that the situation that the washing water flows back to the washing drum can not occur when the water discharge amount of the washing drum is changed due to different rotating speeds in the dehydration state.
The multi-drum clothes treatment device using the control method of the invention can independently control the on/off state switching of the respective drainage pipelines by adding the control device for switching the drainage pipelines on/off on the respective drainage pipelines of different washing drums, and optimize the control method of the respective drainage and dehydration processes, thereby realizing that different washing drums share the same drainage pump for drainage and the problem of washing water backflow can not occur.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a general schematic view of a drainage control flow of a drainage control method of a clothes treating apparatus according to the present invention;
FIG. 2 is a schematic view illustrating a drainage control flow in consideration of whether the second washing tub drains in the drainage control method of the laundry treatment apparatus according to the present invention;
FIG. 3 is a schematic view illustrating a drainage control flow when a second washing tub reaches a drainage process in a drainage control method of a laundry treatment apparatus according to the present invention;
FIG. 4 is a schematic diagram of a drainage control flow when the dewatering rotation speed of the washing drum is switched in the drainage control method of the clothes treatment apparatus according to the present invention;
FIG. 5 is a schematic diagram of a drainage control flow chart in consideration of whether a second washing drum drains water or not when the dewatering rotation speed of the washing drum is switched in the drainage control method of the clothes treatment device according to the present invention;
FIG. 6 is a schematic view of a drain structure of a multi-drum laundry treating device according to the present invention;
FIG. 7 is a schematic view of a drain of a multi-drum laundry treating device according to the present invention.
In the figure: 1. a first washing drum drain valve; 2. a main drain pipe; 3. a first wash drum drain line; 4. draining pump; 5. a second washing drum drain line; 6. a second washing drum drain valve; 7. a second washing drum; 8. a first washing drum; 9. a housing.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, the present invention discloses a drainage control method for a clothes treatment device and a multi-drum clothes treatment device, wherein the clothes treatment device at least comprises a first washing drum 8 and a second washing drum 7, the drainage pipelines of the first washing drum 8 and the second washing drum 7 are communicated, and the drainage pipelines are respectively and independently controlled to be opened and closed; when the first washing drum 8 reaches the drainage process, judging whether the second washing drum drainage pipeline 5 is opened, if so, waiting for the second washing drum drainage pipeline 5 to be closed and then opening the first washing drum drainage pipeline 3; otherwise, the first wash drum drain line 3 is opened. The invention solves the problem that when a multi-drum clothes treatment device uses a common main drainage pipeline 2 for drainage, the washing water in other washing drums flows back to the washing drums to cause clothes pollution, and particularly avoids the problem that the washing water in the upper washing drum flows back to the lower washing drum when the washing drums arranged up and down are used for drainage or dehydration.
Example 1
As shown in fig. 1 to 3, the present embodiment discloses a drainage control method of a laundry treatment apparatus. The laundry processing apparatus in this embodiment is a multi-drum washing machine, and includes at least a first washing drum and a second washing drum, where washing, dewatering, and draining processes of the first washing drum and the second washing drum are independent from each other, and drain water through a first washing drum drain line and a second washing drum drain line, respectively, and the drain lines of the first washing drum and the second washing drum are controlled by independent control devices to switch on/off states of the drain lines, respectively. And the drainage pipelines of the first washing cylinder and the second washing cylinder are communicated and are connected with the same main drainage pipeline in a junction mode, and the washing water is drained out of the machine body through the main drainage pipeline. The drainage device in the embodiment is a drainage valve which is arranged on the drainage pipeline of each washing cylinder and is used for controlling the on-off of the drainage pipeline.
When the drain line of the second washing drum is opened, the second washing drum is in a communication state with the main drain line. At this time, if the washing water in the main drain line cannot be drained for some reason, when the level of the washing water in the main drain line rises to a level higher than the control device of the second washing drum, it is very easy to cause the washing water to flow backward from the main drain line along the drain line of the second washing drum as in the second washing drum. Causing contamination or water leakage in the second washing tub.
Therefore, as shown in fig. 1, in this embodiment, when the first washing cylinder reaches the drainage process, it is determined whether the drainage pipeline of the second washing cylinder is opened, and if so, the drainage pipeline of the first washing cylinder is opened after the drainage pipeline of the second washing cylinder is closed; otherwise, the drain line of the first washing drum is opened. That is, in order to prevent the washing water in the first washing tub from being poured into the second washing tub, if the drain line of the second washing tub is in an open state, the drain line of the second washing tub must be closed before the draining operation of the first washing tub can be performed. Therefore, when the first washing drum carries out the drainage process, the drainage pipeline and the main drainage pipeline of the second washing drum are in a cut-off state, and the risk that the washing water flows into the drainage pipeline of the second washing drum from the main drainage pipeline is eliminated.
Further, as shown in fig. 2, when the first washing drum reaches the draining process, if the draining pipeline of the second washing drum is opened and the draining process is in progress, the first washing drum waits for the second washing drum to be drained and closes the draining pipeline of the second washing drum, and then opens the draining pipeline of the first washing drum. The arrangement firstly preferentially ensures the smooth completion of the drainage process of the second washing cylinder, and under the general design idea of the invention, the opening and closing times of the drainage valve of the second washing cylinder are further reduced, and the service life of the drainage valve of the second washing cylinder is prolonged. In this case, after the washing water in the first washing tub is drained, the drain line of the second washing tub can be opened again.
Further, in the multi-drum laundry treating apparatus in which the washing drums are arranged up and down, the drainage height of the first washing drum is higher than that of the second washing drum, and in this arrangement, when the second washing drum reaches the drainage process, further judgment is required. As shown in fig. 3, when the second washing cylinder reaches the drainage process, it is determined whether the drainage of the first washing cylinder is in progress, and if so, the drainage pipeline of the second washing cylinder is opened after the first washing cylinder is emptied; otherwise, the drain line of the second washing drum is opened. In the drainage process, the second washing cylinder drains after waiting for the first washing cylinder to drain, and the drainage height of the first washing cylinder is higher, so that the situation that the washing water flows backwards can not occur as long as the washing water in the second washing cylinder can be smoothly drained under the situation that the first washing cylinder is drained, and the drainage valve of the first washing cylinder does not need to be closed again. The opening and closing times of the drain valve of the first washing drum are reduced in the control process, and the service life of the drain valve of the first washing drum is prolonged.
Example 2
As shown in fig. 4 and 5, the present embodiment is a further complement to the case where the washing drum of embodiment 1 performs the dehydration process. In the embodiment, the second washing drum drainage pipeline is closed in the acceleration process of the first washing drum from low-rotation-speed dehydration to high-rotation-speed dehydration. When the first washing drum is dehydrated stably in a high-rotation-speed dehydration state, the second washing drum drainage pipeline can be opened. This is because the laundry treating apparatus, when undergoing an acceleration process from a low rotational speed to a high rotational speed while performing the dehydration process, will significantly increase the amount of water discharged, which is a period of time in which the water discharge is most concentrated during the dehydration stage. Therefore, similarly to embodiment 1, in order to prevent the washing water from flowing backward into the washing tub from the drain line, the drain line of each washing tub is also controlled similarly to embodiment 1.
As shown in fig. 4, before the first washing drum is switched from the low-rotation-speed dehydration to the high-rotation-speed dehydration, whether the second washing drum drainage pipeline is closed is judged, if so, the first washing drum is switched from the low-rotation-speed dehydration to the high-rotation-speed dehydration, and finally the high-rotation-speed dehydration is achieved; otherwise, the first washing drum keeps a low-speed dehydration state. That is to say, in order to avoid that the washing water flows back into the second washing drum in the switching process from the low-speed dehydration stage to the high-speed dehydration stage in the dehydration state in the first washing drum, if the drainage pipeline of the second washing drum is in an open state, the drainage pipeline of the second washing drum must be closed first, and then the dehydration speed-increasing drainage operation of the first washing drum can be executed; otherwise, the first washing tub needs to be continuously maintained in a low-speed dehydrating state to maintain a small amount of water discharged. Therefore, when the water displacement of the first washing drum is increased in the dewatering acceleration process, the water drainage pipeline of the second washing drum and the main water drainage pipeline are in a cut-off state, and the risk that the washing water flows into the water drainage pipeline of the second washing drum from the main water drainage pipeline is eliminated.
Further, as shown in fig. 5, if the drain line of the second washing cylinder is opened before the first washing cylinder is switched from the low-speed dewatering to the high-speed dewatering, and the drainage process is in progress, the first washing cylinder is switched from the low-speed dewatering to the high-speed dewatering after waiting for the second washing cylinder to be drained and closing the drain line of the second washing cylinder, and finally the high-speed dewatering is achieved. In this case, the drain line of the second washing tub can be opened again until the first washing tub is stabilized in the high rotation dehydration state.
Example 3
As shown in fig. 6, the present embodiment discloses a multi-drum laundry treating device using the drainage control method of the laundry treating device according to the above embodiment.
As shown in fig. 6, the laundry treating apparatus includes a casing 9, and at least a first washing drum 8 and a second washing drum 7 are provided in the casing 9. As shown in the figure, the first washing drum 8 is located at the upper part of the second washing drum 7, and the drainage height of the first washing drum 8 is higher than that of the second washing drum 7.
The multi-drum laundry treating apparatus of the present embodiment is an upper drainage laundry treating apparatus, the main drainage pipe 2 is provided with a drainage pump 4, and the drainage pump 4 is used for pumping the washing water in the main drainage pipe 2 out of the machine body, so as to complete a drainage process of the laundry treating apparatus. The drain pipeline 3 of the first washing drum and the drain pipeline 5 of the second washing drum are respectively controlled by independent control devices to switch the on/off states of the drain pipelines. As shown in the figure, the control device is a water discharge valve, and the water discharge pipeline 3 of the first washing drum and the water discharge pipeline 5 of the second washing drum are respectively controlled to be opened and closed through a water discharge valve 1 of the first washing drum and a water discharge valve 6 of the second washing drum which are arranged on the respective water discharge pipelines. The first and second wash drum drain lines 3 and 5 are joined to the same main drain pipe 2 and drain wash water out of the machine body through the main drain pipe 2.
The multi-drum clothes treatment device in the embodiment adopts the drainage and/or dehydration control method of the embodiment, and the problem that the washing water flows backwards in the independent drainage processes of different washing drums can be solved by only using one drainage pump. And other draining pumps do not need to be additionally arranged or the drainage is not transformed, so that the installation cost of the multi-drum clothes treatment device is reduced.
Example 4
As shown in fig. 7, the multi-drum laundry treating device of the present embodiment 3 is supplemented. The present embodiment is different from embodiment 3 in that the laundry treating apparatus in the present embodiment is a lower drain, a drain pump is not installed, the first washing tub drain line 3 and the second washing tub drain line 5 are connected to the same main drain pipe 2, and the washing water is drained out of the machine body through the main drain pipe 2. A first washing drum 8 and a second washing drum 7 arranged up and down. Also with the method of controlling drainage and/or dehydration employed in the above-described embodiment, the first and second wash drum drain valves 1 and 6 provided on the respective drain lines are used to control the on and off of the respective drain lines, respectively. The problem that the washing water flows backwards in the independent water drainage processes of different washing drums is solved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. A method for controlling drainage of a clothes treatment device, the clothes treatment device at least comprises a first washing drum and a second washing drum, and is characterized in that drainage pipelines of the first washing drum and the second washing drum are communicated, and the opening and closing of the drainage pipelines are independently controlled; when the first washing drum reaches the drainage process, judging whether the drainage pipeline of the second washing drum is opened, if so, waiting for the drainage pipeline of the second washing drum to be closed and then opening the drainage pipeline of the first washing drum; otherwise, opening the drainage pipeline of the first washing drum;
after the washing water in the first washing cylinder is emptied, the drainage pipeline of the second washing cylinder can be opened;
in the speed increasing process of the first washing drum from low-rotation-speed dehydration to high-rotation-speed dehydration, closing a drainage pipeline of the second washing drum;
when the first washing drum is dehydrated and stabilized in a high-rotation-speed dehydration state, the drainage pipeline of the second washing drum can be opened;
the drainage pipelines of the first washing drum and the second washing drum are connected in tandem with the same main drainage pipeline, and when the drainage quantity of the first washing drum is increased in the dewatering acceleration process, the drainage pipeline of the second washing drum and the main drainage pipeline are controlled to be in a cut-off state;
before the speed rising switching from low-rotation-speed dehydration to high-rotation-speed dehydration of the first washing drum, judging whether a drainage pipeline of the second washing drum is closed, if so, converting the low-rotation-speed dehydration to the high-rotation-speed dehydration of the first washing drum, and finally achieving the high-rotation-speed dehydration; otherwise, the first washing drum keeps a low-speed dehydration state.
2. The method of claim 1, wherein when the first washing drum reaches the draining process, if the draining pipeline of the second washing drum is opened and the draining process is in progress, the draining pipeline of the first washing drum is opened after the second washing drum is emptied and the draining pipeline of the second washing drum is closed.
3. The method of claim 1, wherein when the second washing drum reaches the draining process, determining whether the draining of the first washing drum is in progress, if yes, opening the draining pipeline of the second washing drum after the first washing drum is emptied; otherwise, the drain line of the second washing drum is opened.
4. The method of claim 1, wherein before the first washing drum is switched from the low-speed dewatering to the high-speed dewatering, if the drain line of the second washing drum is opened and the draining process is in progress, after waiting for the second washing drum to be drained and closing the drain line of the second washing drum, the first washing drum is switched from the low-speed dewatering to the high-speed dewatering, and finally the high-speed dewatering is achieved.
5. A multi-drum laundry treating apparatus to which the drain controlling method of the laundry treating apparatus according to any one of claims 1 to 4 is applied, comprising a housing in which at least a first washing drum and a second washing drum are provided, the drain lines of the first washing drum and the second washing drum are controlled by independent control means to switch on/off states of the respective drain lines, and the drain lines of the first washing drum and the second washing drum are merged to a common drain line and drain the washing water out of the machine body through the common drain line;
the multi-drum clothes treatment device is an upper drainage clothes treatment device, the main drainage pipe is provided with a drainage pump, and the drainage pump is used for pumping washing water in the main drainage pipe out of the machine body to finish the drainage process of the clothes treatment device;
or the multi-drum clothes treatment device is a lower drainage clothes treatment device, and the drainage pipelines of the first washing drum and the second washing drum are respectively controlled by independent control devices to control the on/off states of the drainage pipe of the first washing drum and the main drainage pipeline or the drainage pipe of the second washing drum and the main drainage pipeline;
the drainage height of the first washing drum is higher than that of the second washing drum.
6. A multi-drum laundry treating device according to claim 5, wherein the control means is a drain valve, and the drain lines of the first washing drum and the drain lines of the second washing drum are respectively controlled to be opened and closed by the drain valves provided on the respective drain lines.
CN201810371815.9A 2018-04-24 2018-04-24 Drainage control method for clothes treatment device and multi-drum clothes treatment device Active CN110396797B (en)

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PCT/CN2019/081471 WO2019205912A1 (en) 2018-04-24 2019-04-04 Drainage control method for clothes treatment apparatus, and multi-drum clothes treatment apparatus

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