CN112237848A - Cleaning device, filter element cleaning system, water purifier and water purifier cleaning method - Google Patents
Cleaning device, filter element cleaning system, water purifier and water purifier cleaning method Download PDFInfo
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- CN112237848A CN112237848A CN202011117788.6A CN202011117788A CN112237848A CN 112237848 A CN112237848 A CN 112237848A CN 202011117788 A CN202011117788 A CN 202011117788A CN 112237848 A CN112237848 A CN 112237848A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to the technical field of water purification, in particular to a cleaning device, a filter element cleaning system, a water purifier and a water purifier cleaning method, wherein the cleaning device comprises a box body and an interface, wherein: the box body is used for containing cleaning materials; the interface has an input end connected to a water source and an output end connected to the object to be cleaned, so that water from the water source enters the box body and dissolves the cleaning material to form a cleaning solution which is then input to the object to be cleaned. In the technical scheme provided by the invention, the cleaning device is independent, the cleaning operation is simple and rapid, the filter element to be cleaned can be repeatedly used after being cleaned, the replacement cost can be reduced, the cleaning material consumption and the cleaning procedure can be standardized, the problems of uneven consumption, material errors and cleaning operation errors are avoided, in addition, the cleaning process is full-automatic, manual operation is not needed, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a cleaning device, a filter element cleaning system, a water purifier and a water purifier cleaning method.
Background
With the importance of people on drinking water safety, the household water purifier is more and more popular. A reverse osmosis membrane (hereinafter, referred to as RO membrane) water purifier is widely used in the field of water purifiers because it has a good effect of removing impurities. However, when the RO membrane is used for a long time, calcium ions, magnesium ions and colloids in water adhere to the surface of the RO membrane, and the RO membrane is clogged, thereby affecting the water outlet speed.
At present, the mode of solving above-mentioned problem mainly includes two kinds, one kind is that the filter core adopts the design of throwing soon of convenient change, design into an organic whole structure reverse osmosis membrane filter core (RO membrane filter core) and filter core shell, and be equipped with quick interface on the casing of water purifier, when the delivery rate of water purifier reduces, both think RO membrane life-span is due, need change the RO membrane filter core of new, the RO membrane filter core that this mode will block up directly abandons, not only causes the waste of material, still can increase use cost for the user.
The other type is that RO membrane filter core and filter core shell adopt split type design, and when the play water velocity of water purifier reduced, the usable specific instrument of user opened the filter core shell, took out the RO membrane filter core to soak in acid cleaning material, utilize cleaning material to wash dirt such as calcium ion, magnesium ion and colloid, and then prolong the life of RO membrane filter core. In this way, the water purifier needs to be disassembled and assembled, the cleaning operation is complex, the use and operation method of the cleaning material are difficult to be controlled in a standardized manner, and the RO membrane is easy to damage or cannot be cleaned cleanly.
Disclosure of Invention
The invention provides a cleaning device, a filter element cleaning system, a water purifier and a water purifier cleaning method.
In one aspect of the present invention, there is provided a cleaning device comprising a cartridge and an interface, wherein: the box body is used for containing cleaning materials; the interface has an input end connected to a water source and an output end connected to the object to be cleaned, so that water from the water source enters the box body and dissolves the cleaning material to form a cleaning solution which is then input to the object to be cleaned.
Optionally, the input end is connected with a water source pipeline through a detachable interface, and the output end is connected with a cleaned object pipeline through a detachable interface, so that the cleaning device is disposable.
Optionally, the detachable interface is one of: a threaded interface, a clamping interface and a plug interface.
In another aspect of the present invention, there is also provided a filter element cleaning system, including the above cleaning device, further including a water inlet valve, a flush valve and a waste water valve, wherein: the water inlet valve, the box body and the flushing valve are sequentially connected through pipelines so as to form a cleaning pipeline, the head end of the cleaning pipeline is connected with the water inlet, and the tail end of the cleaning pipeline is connected with a filter element to be washed of the water purifier; one end of the waste water valve is connected with the drain pipe, and the other end of the drain pipe is connected with the filter element to be washed.
Optionally, a first one-way valve is arranged between the water inlet valve and the input end of the interface, and a second one-way valve is arranged between the output end of the interface and the waste water valve.
Optionally, the washing device further comprises a three-way pipe, wherein a first end of the three-way pipe is connected with the flushing valve, a second end of the three-way pipe is connected with the filter element to be washed, and a third end of the three-way pipe is connected with the waste water valve.
Optionally, the filter element to be washed is a reverse osmosis membrane filter element.
In another aspect of the invention, a water purifier is also provided, which comprises a composite filter element, a booster pump, a filter element to be washed, a water tap and the filter element cleaning system which are connected in sequence; the water inlet of the water inlet valve is connected with the water outlet of the composite filter element, the first water outlet of the water inlet valve is connected with the water inlet of the booster pump, and the second water outlet of the water inlet valve is connected with the input end of the interface; the filter element to be washed comprises a water outlet, and the water outlet pipe is connected with the water outlet of the filter element to be washed.
Optionally, the water purifier still includes the casing, and the outside of casing is located to box body, first check valve and second check valve, and first check valve and second check valve and casing fixed connection.
In another aspect of the present invention, there is provided a method for cleaning a water purifier including a composite filter element, a booster pump, a filter element to be cleaned, and a water tap, which are sequentially connected, the method including: a cleaning pipeline is arranged between a water inlet of the water purifier and the filter element to be cleaned, a box body is arranged on the cleaning pipeline, and cleaning solution in the box body is sent to the filter element to be cleaned by utilizing the cleaning pipeline so as to react with dirt in the filter element to be cleaned; and a drainage pipeline is arranged on the filter element to be cleaned, and the drainage pipeline is utilized to discharge the waste water in the cleaned filter element to be cleaned.
Optionally, the box body is detachably connected with the cleaning pipeline, and the box body is disposable.
Optionally, the step of feeding the cleaning solution in the box body into the filter element to be cleaned by using the cleaning pipeline to react the cleaning solution with the dirt in the filter element to be cleaned includes: and water flowing into the water inlet is kept stand for a limited time in the box body, so that the cleaning material in the box body is dissolved to form a cleaning solution, the cleaning solution is pumped into the filter element to be cleaned by using the booster pump, and the cleaning solution is kept stand for a limited time in the filter element to be cleaned.
Optionally, the step of reacting the cleaning solution with the soil in the filter element to be cleaned further comprises: after the cleaning solution is kept still in the filter element to be cleaned for a limited time, the booster pump is intermittently started and stopped, so that water flow for washing dirt is intermittently generated in the middle of the filter element to be cleaned.
According to the technical scheme provided by the invention, the cleaning device is independent, when the filter element to be cleaned needs to be cleaned, the box body is quickly arranged on the water purifier, the interior of the water purifier comprises a cleaning pipeline and a drainage pipeline, the cleaning solution in the box body is conveyed into the filter element to be cleaned by using the cleaning pipeline, and the cleaned wastewater is discharged by using the drainage pipeline; the cleaning operation is simple and fast, the filter element to be cleaned can be repeatedly used, the replacement cost can be reduced, the material consumption is cleaned, the cleaning procedure can be subjected to standardized treatment, the problems of uneven consumption or material consumption errors and cleaning operation errors are avoided, in addition, the cleaning process is full-automatic, manual operation is not needed, and the user experience degree is improved.
Drawings
For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a cleaning apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a self-cleaning structure provided by an embodiment of the present invention;
fig. 3 is a schematic view of a water purifier according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a water purifier provided in an embodiment of the present invention;
FIG. 5 is a block diagram illustrating a flow chart of a cleaning method for a water purifier according to an embodiment of the present invention;
fig. 6 is a flow chart of a cleaning method of a water purifier according to an embodiment of the present invention.
In the figure:
1: a water inlet valve; 2: a box body; 3: a flush valve; 4: a waste water valve; 5: a filter element to be washed; 6: a first check valve; 7: a second one-way valve; 8: a three-way pipe; 9: a composite filter element; 10: a booster pump; 11: a faucet; 12: a housing; 13: an interface.
Detailed Description
In the embodiment of the invention, the reverse osmosis membrane filter element (RO membrane filter element) is cleaned and reused, and during cleaning operation, the RO membrane filter element does not need to be disassembled, and full-automatic cleaning operation can be realized by installing the disposable box body, so that not only is the cleaning efficiency improved, but also the dosage of the cleaning solution and the operation steps are standardized, and the following specific description is provided.
Fig. 1 is a schematic view of a cleaning apparatus according to an embodiment of the present invention. As shown in fig. 1, the cleaning apparatus includes a case 2 for containing a cleaning material, and a mouthpiece 13 having an input end connected to a water source and an output end connected to an object to be cleaned, so that water from the water source enters the case 2 and dissolves the cleaning material to form a cleaning solution and then inputs the cleaning solution to the object to be cleaned. The cleaning material is an acidic substance such as citric acid, hydrochloric acid, acetic acid, etc., and is a dry material, and after water is introduced into the box body 2, the dry cleaning material is dissolved to form a cleaning solution. Box body 2 independently exists, can just install cleaning system when having the washing demand on, and it is disposable product, for the ease of box body 2's dismouting operation, sets up detachable interface respectively at box body 2's input and output. The detachable interface can be a threaded interface, a clamping interface or a plug interface.
Fig. 2 is a schematic view of a self-cleaning structure provided in an embodiment of the present invention. As shown in fig. 2, the cleaning device of the filter element cleaning system further comprises a water inlet valve 1, a box body 2, a flushing valve 3 and a waste water valve 4; the water inlet valve 1, the box body 2 and the flushing valve 3 are sequentially connected through pipelines so as to form a cleaning pipeline, the head end of the cleaning pipeline is connected with the water inlet, and the tail end of the cleaning pipeline is connected with a filter element 5 to be washed of the water purifier; one end of the waste water valve 4 is connected with a drain pipe, and the other end of the drain pipe is connected with a filter element 5 to be washed.
The filter element cleaning system is independently arranged in the water purifier, and is switched to the filter element cleaning system during use, and the filter element cleaning system is matched with a part of a purification water path of the purifier, so that the cleaning operation of the filter element 5 to be cleaned can be realized. Specifically, the water inlet valve 1 sends municipal water (tap water) to the box body 2, the box body 2 comprises quantitative cleaning materials, water and the cleaning materials are mixed to form cleaning solution, the booster pump 10 in the purification water path is started, the cleaning solution is sent to the filter element 5 to be washed, the cleaning solution and dirt in the filter element 5 to be washed are subjected to chemical reaction, the filter element 5 to be washed is stood for a period of time to be fully reacted, the booster pump 10 is used for driving the water to flow, multiple washing is completed, and finally, the drain pipe is used for discharging waste water of the filter element 5 to be washed, and the filter element 5 to be washed is cleaned.
In the embodiment of the invention, the filter element 5 to be cleaned can be cleaned without being disassembled, the cleaning efficiency can be further improved, in addition, the standardization of the cleaning material consumption and the cleaning operation can be realized, and the problems of uneven consumption, wrong material consumption and wrong cleaning operation are avoided. In the embodiment of the invention, the box bodies 2 with different content of cleaning materials can be selected for filter elements 5 to be cleaned with different specifications.
As shown in fig. 1 and 2, a first check valve 6 is arranged between the inlet valve 1 and the input end of the interface 13, and a second check valve 7 is arranged between the output end of the interface 13 and the waste water valve 4. When the case body 2 is in a detached state, since the first check valve 6 and the second check valve 7 are provided, a water leakage phenomenon does not occur, so that the case body 2 may not be always mounted on the water purifier when the water purifier is used, and only when a cleaning operation is required, it may be mounted again. Because the cleaning material in the box body 2 is placed in a fixed amount, after the cleaning operation is finished, the box body 2 is detached and discarded, and when the cleaning operation is needed again, a new box body 2 is installed.
As shown in figure 2, in the embodiment of the invention, the self-cleaning structure further comprises a three-way pipe 8, wherein a first end of the three-way pipe 8 is connected with the flushing valve 3, a second end of the three-way pipe 8 is connected with the filter element 5 to be cleaned, and a third end of the three-way pipe is connected with the waste water valve 4. Through setting up three-way pipe 8 for drain pipe and clean pipeline part coincide, adopt this mode, do not influence the washing operation function, simultaneously, can save the use of tubular product and space.
Fig. 3 is a schematic view of a water purifier according to an embodiment of the present invention. As shown in fig. 3, the water purifier comprises a composite filter element 9, a booster pump 10, a filter element 5 to be washed, a water tap 11 and the self-cleaning structure which are connected in sequence; the water inlet of the water inlet valve 1 is connected with the water outlet of the composite filter element 9, the first water outlet of the water inlet valve 1 is connected with the water inlet of the booster pump 10, and the second water outlet is connected with the input end of the interface 13; the filter element 5 to be washed comprises a water outlet, and the water outlet pipe is connected with the water outlet of the filter element 5 to be washed.
Fig. 4 is a schematic structural diagram of a water purifier according to an embodiment of the present invention. As shown in fig. 4, the water purifier further includes a housing 12, the cartridge 2, the first check valve 6 and the second check valve 7 are disposed outside the housing 12, and the first check valve 6 and the second check valve 7 are fixedly connected to the housing 12. The box body 2 is in threaded connection with a first one-way valve 6 and a second one-way valve 7.
As shown in fig. 2 and 3, when the water purifier performs water purification operation, the water inlet valve 1 is communicated with the booster pump 10 and is closed with the box body 2, under the action of the booster pump 10, tap water passes through the composite filter element 9 for primary filtration and then enters the filter element 5 to be washed for secondary filtration, and finally, purified water is discharged from the water tap 11.
After the water purifier is used for a period of time, the filter element 5 to be washed needs to be cleaned, and the user prepares the independent box body 2 and quickly installs the box body on a pipeline in the water purifier. The control device of the water purifier is provided with a cleaning key, the water purifier is switched to a cleaning state after the cleaning key is pressed down, at the moment, the second water outlet of the water inlet valve 1 is opened, the first one-way valve 6 and the second one-way valve 7 are opened, the flushing valve is opened, the waste water valve 4 and the water tap 11 are closed, tap water passes through the composite filter element 9 and enters the box body 2 through the water inlet valve 1 and the first one-way valve, after the box body 2 is filled with water (whether the water is filled or not can be judged by adopting a timing mode), the water inlet valve 1 is closed, after the water is placed for a period, cleaning materials are dissolved to form cleaning solution, the booster pump 10 is started, the cleaning solution is sent to the filter element 5 to be cleaned, the cleaning solution is placed for a period in the filter element 5 to be cleaned, the cleaning solution fully reacts with dirt in the interior, the dirt is dissolved, the water flow further washes away dirt on the filter element 5 to be washed, so that the washing is more thorough.
After cleaning, the flushing valve 3 is closed, the water inlet valve 1 and the waste water valve 4 are opened, the booster pump 10 is started, tap water enters the filter element 5 to be cleaned after passing through the composite filter element 9 and the booster pump 10, waste water in the filter element 5 to be cleaned is discharged from the water outlet, after all waste water is completely discharged (whether the waste water is completely discharged is determined by discharging limited time or detecting the quality of the discharged water), the booster pump 10 stops working, the waste water valve 4 and the water inlet valve 1 are closed, the first one-way valve 6 and the second one-way valve 7 are closed, the box body 2 is taken down and discarded, and cleaning operation is completed.
In the above operation, only the box body 2 needs to be disassembled and assembled by the user, and other valve switches and the like are automatically controlled and completed by the control device, so that the automation degree is high. When cleaning is needed again, a new box body 2 is installed.
Fig. 5 is a flow chart of a cleaning method of a water purifier according to an embodiment of the present invention. As shown in fig. 5, the water purifier includes a composite filter element 9, a booster pump 10, a filter element 5 to be washed and a water tap 11 which are connected in sequence, and the cleaning method includes:
step S1: a cleaning pipeline is arranged between a water inlet of the water purifier and the filter element 5 to be cleaned, a box body 2 is arranged on the cleaning pipeline, and cleaning solution in the box body 2 is sent to the filter element 5 to be cleaned by utilizing the cleaning pipeline so as to react with dirt in the filter element 5 to be cleaned;
step S2: and a drainage pipeline is arranged on the filter element 5 to be cleaned, and the drainage pipeline is utilized to discharge the waste water in the cleaned filter element 5 to be cleaned.
Fig. 6 is a flow chart of a cleaning method of a water purifier according to an embodiment of the present invention. As shown in fig. 6, step S1 includes the following steps:
step S11: a cleaning pipeline is arranged between a water inlet of the water purifier and the filter element 5 to be cleaned, and a box body 2 is arranged on the cleaning pipeline;
step S12: the water flowing into the water inlet is kept stand in the box body 2 for a limited time, so that the cleaning material in the box body 2 is dissolved to form a cleaning solution, the cleaning solution is pumped into the filter element 5 to be cleaned by using the booster pump 10, and the cleaning solution is kept stand in the filter element 5 to be cleaned for a limited time;
step S13: after the cleaning solution is kept still in the filter element 5 to be cleaned for a limited time, the booster pump 10 is intermittently started and stopped, so that water flow for washing dirt is intermittently generated in the filter element 5 to be cleaned.
The box body 2 only needs to be installed on the water purifier when in cleaning operation, and the mode does not need to carry out the dismounting operation on the filter element 5 to be cleaned, so that the cleaning operation is simpler and faster. In addition, the box body 2 is disposable, namely the cleaning material in the box body is used for one-time cleaning, so that the cleaning operation can be more standardized, including the standardization of the using amount of the cleaning solution and the standardization of the cleaning operation steps.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A cleaning device, comprising a cartridge (2) and an interface (13), wherein:
the box body (2) is used for containing cleaning materials;
the interface (13) has an input end connected to a water source and an output end connected to the object to be cleaned, so that water from the water source enters the case body (2) and dissolves the cleaning material to form a cleaning solution and then inputs the cleaning solution into the object to be cleaned.
2. The cleaning device of claim 1, wherein the input end is connected to a water source pipeline through a detachable interface, and the output end is connected to a cleaned object pipeline through a detachable interface, so that the cleaning device is disposable.
3. The cleaning apparatus defined in claim 2, wherein the detachable interface is one of: a threaded interface, a clamping interface and a plug interface.
4. A filter cartridge cleaning system, comprising a cleaning device according to any one of claims 1 to 3, further comprising a water inlet valve (1), a flush valve (3) and a waste water valve (4), wherein:
the water inlet valve (1), the box body (2) and the flushing valve (3) are sequentially connected through pipelines, so that a cleaning pipeline is formed, the head end of the cleaning pipeline is connected with the water inlet, and the tail end of the cleaning pipeline is connected with a filter element (5) to be washed of the water purifier;
one end of the waste water valve (4) is connected with a drain pipe, and the other end of the drain pipe is connected with the filter element (5) to be washed.
5. Filter element cleaning system according to claim 4, wherein a first non return valve (6) is provided between the inlet valve (1) and the inlet of the interface (13), and a second non return valve (7) is provided between the outlet of the interface (13) and the waste valve (4).
6. Filter element cleaning system according to claim 4, further comprising a tee (8), the tee (8) being connected at a first end to the flush valve (3), at a second end to the filter element (5) to be cleaned and at a third end to the waste valve (4).
7. A filter cartridge cleaning system as claimed in any one of claims 4 to 6, wherein the filter cartridge to be cleaned is a reverse osmosis membrane filter cartridge.
8. A water purifier, characterized by comprising a composite filter element (9), a booster pump (10), a filter element (5) to be washed and a water tap (11) connected in sequence, and a filter element cleaning system according to any one of claims 5 to 7;
the water inlet of the water inlet valve (1) is connected with the water outlet of the composite filter element (9), the first water outlet of the water inlet valve (1) is connected with the water inlet of the booster pump (10), and the second water outlet is connected with the input end of the interface (13);
the filter element (5) to be washed comprises a water outlet, and the water outlet pipe is connected with the water outlet of the filter element (5) to be washed.
9. The water purifier according to claim 8, further comprising a housing (12), wherein the cartridge (2), the first check valve (6) and the second check valve (7) are disposed outside the housing (12), and the first check valve (6) and the second check valve (7) are fixedly connected to the housing (12).
10. The cleaning method of the water purifier is characterized in that the water purifier comprises a composite filter element, a booster pump, a filter element to be cleaned and a water faucet which are sequentially connected, and the method comprises the following steps:
a cleaning pipeline is arranged between a water inlet of the water purifier and the filter element to be cleaned, a box body is arranged on the cleaning pipeline, and cleaning solution in the box body is sent to the filter element to be cleaned by utilizing the cleaning pipeline so as to react with dirt in the filter element to be cleaned;
and a drainage pipeline is arranged on the filter element to be cleaned, and the drainage pipeline is utilized to discharge the waste water in the cleaned filter element to be cleaned.
11. The method of claim 10, wherein the cartridge is removably coupled to the cleaning line, the cartridge being disposable.
12. The method of claim 11, wherein the step of using the cleaning line to deliver the cleaning solution from the housing to the filter cartridge to be cleaned to react the cleaning solution with the contaminants in the filter cartridge to be cleaned comprises:
and water flowing into the water inlet is kept stand for a limited time in the box body, so that the cleaning material in the box body is dissolved to form a cleaning solution, the cleaning solution is pumped into the filter element to be cleaned by using the booster pump, and the cleaning solution is kept stand for a limited time in the filter element to be cleaned.
13. The method of claim 12, wherein the step of reacting the cleaning solution with the soil in the filter element to be cleaned further comprises:
after the cleaning solution is kept still in the filter element to be cleaned for a limited time, the booster pump is intermittently started and stopped, so that water flow for washing dirt is intermittently generated in the middle of the filter element to be cleaned.
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| CN202011117788.6A CN112237848A (en) | 2020-10-19 | 2020-10-19 | Cleaning device, filter element cleaning system, water purifier and water purifier cleaning method |
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| CN202011117788.6A CN112237848A (en) | 2020-10-19 | 2020-10-19 | Cleaning device, filter element cleaning system, water purifier and water purifier cleaning method |
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| CN209890375U (en) * | 2019-03-07 | 2020-01-03 | 浙江沁园水处理科技有限公司 | Equipment for cleaning inner membrane element of water purifier |
| CN110776120A (en) * | 2019-11-12 | 2020-02-11 | 珠海格力电器股份有限公司 | Filter element cleaning system, filter element cleaning method and water purifier |
| CN213761293U (en) * | 2020-10-19 | 2021-07-23 | 北京智米科技有限公司 | Cleaning devices, filter cleaning systems and water purifiers |
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