CN105540902A - Compact type RO (reverse osmosis) water purifier filter element - Google Patents
Compact type RO (reverse osmosis) water purifier filter element Download PDFInfo
- Publication number
- CN105540902A CN105540902A CN201610129336.7A CN201610129336A CN105540902A CN 105540902 A CN105540902 A CN 105540902A CN 201610129336 A CN201610129336 A CN 201610129336A CN 105540902 A CN105540902 A CN 105540902A
- Authority
- CN
- China
- Prior art keywords
- filter
- filter core
- filter element
- rearmounted
- reverse osmosis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
-
- 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
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a compact type RO (reverse osmosis) water purifier filter element. The compact type RO water purifier filter element comprises a filter flask body and a filter flask cap, wherein a composite filter element is arranged in the filter flask body, and a raw water inlet, a concentrated water outlet and a pure water outlet are formed in the filter flask body; the composite filter element comprises an RO membrane filter element or a nanofiltration membrane filter element, a front filter element coaxial with the RO membrane filter element or the nanofiltration membrane filter element is arranged outside the RO membrane filter element or the nanofiltration membrane filter element, a rear filter element accommodating cavity is formed in an upper filter element cap, a rear filter element is accommodated in the rear filter element accommodating cavity, and the pure water outlet communicated with the rear filter element is formed in the filter flask body. According to the compact type RO water purifier filter element, the front filter element, the rear filter element as well as the RO membrane filter element or the nanofiltration membrane filter element are integrated in the filter flask body, so that the number of the filter elements can be reduced, the filter effect is good, the space occupied by the whole machine is reduced, meanwhile, the door-to-door replacement frequency of the filter elements by service staff can be reduced, and the maintenance cost is reduced.
Description
Technical field
The present invention relates to a kind of filter core, particularly a kind of compact reverse osmosis water purifier filter core.
Background technology
Current water purifier is as the emerging product of one, and wide market, by the reverse osmosis water purifier that investigation is traditional in the market, is all have multi-stage filter core, and therefore cause machine volume all very large, space waste is very large.Because the multi-stage filter core life-span is different, need attendant repeatedly to visit replacing, product maintenance cost is very high.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of reduction machine volume, good filtration effect, changes compact reverse osmosis water purifier filter core easily.
Technical problem to be solved by this invention is realized by following technical scheme, the present invention is a kind of compact reverse osmosis water purifier filter core, be characterized in: comprise filter flask body and filter flask lid, composite filter element is provided with in filter flask body, be provided with former water water entry between filter flask body and composite filter element, filter flask body is provided with the original water inlet be communicated with former water water entry;
Described composite filter element comprises RO membrane cartridge or nanofiltration membrane filter core, filter core lower cover and filter element upper cover is respectively equipped with at the two ends of RO membrane cartridge or nanofiltration membrane filter core, outer at RO membrane cartridge or nanofiltration membrane filter core, be provided with the preposition filter core coaxially arranged with RO membrane cartridge or nanofiltration membrane filter core between filter core lower cover and filter element upper cover, be provided with preposition water flow passage between described preposition filter core and RO membrane cartridge or nanofiltration membrane filter core; Filter flask body is provided with dense water out, and the concentrated stream of RO membrane cartridge or nanofiltration membrane filter core goes out end and is provided with the dense water outlet passage be connected with dense water out; Described filter element upper cover is provided with the rearmounted filter core placed cavity be communicated with the pure water outflow end of RO membrane cartridge or nanofiltration membrane filter core, rearmounted filter core placed cavity is provided with the gland of fixing rearmounted filter core, in rearmounted filter core placed cavity, rearmounted filter core is housed, filter flask body is provided with the pure water be communicated with rearmounted filter core and exports.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the upper end of described rearmounted filter core placed cavity is provided with the top cover be connected with filter element upper cover, and dense water outlet passage is located between gland and top cover.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and rearmounted filter core is made up of rearmounted filter element upper cover, rearmounted filter core lower cover and rearmounted filter body, is provided with pure water outlet passage between gland and rearmounted filter core.
Technical problem to be solved by this invention can also be realized further by following technical scheme, filter flask lid mounting block is provided with between filter flask body and filter flask lid, described filter flask covers and is upwards provided with two symmetrically arranged curved baffles along its edge, form two symmetrically arranged installation gaps between two curved baffles, be respectively equipped with stop block along same rotation direction in the inner side of two curved baffles; Described filter flask lid mounting block comprises symmetrically arranged two fixed bodies, each fixed body is equipped with the lower edge and upper edge that coordinate with filter flask body and filter flask lid respectively, fixed card slot is formed between lower edge and upper edge, the middle part of described upper edge is provided with the convex eaves arranged downwards along its outer edge, the arc length of convex eaves is less than the arc length of installation gap between two curved baffles.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the middle part of described lower edge is provided with breach.
Technical problem to be solved by this invention can also be realized further by following technical scheme, and the width of described convex eaves is more than or equal to the height of curved baffle.
Technical problem to be solved by this invention can also be realized further by following technical scheme, is connected between described lower edge and upper edge by connecting plate body.
Technical problem to be solved by this invention can also be realized further by following technical scheme, is connected between described lower edge and upper edge by some union levers.
Compared with prior art, preposition filter core, RO membrane cartridge or nanofiltration membrane filter core and rearmounted filter core are integrated in filter flask body by the present invention, can reduce filter core quantity, good filtration effect, reduce complete machine taken up space, attendant can be reduced simultaneously and visit and change the frequency of filtration core, reduction maintenance cost.Additionally by filter flask lid mounting block, filter flask lid and filter flask body are fixed, time fixing, use installation draw-in groove to block filter flask lid and filter flask body, and by the convex eaves of two fixed bodies facing to installation gap, rotate two fixed bodies to stop block simultaneously, can realize installing, during dismounting, reverse operating.Therefore facilitate filter element replacing, by instrument, manually can realize mounting or dismounting, just can be able to operate without professional.
Accompanying drawing explanation
Fig. 1 is a kind of assembly structure schematic diagram of the present invention.
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is the structural representation of composite filter element.
Fig. 4 is a kind of structural representation of filter flask lid.
Fig. 5 is a kind of structural representation of fixed body.
Fig. 6 is work water route of the present invention flow schematic diagram.
Embodiment
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
As shown in Figure 1, a kind of compact reverse osmosis water purifier filter core, comprises filter flask body 3 and filter flask lid 2, in filter flask body 3, is provided with composite filter element, be provided with former water water entry 43 between filter flask body 3 and composite filter element 4, filter flask body 3 is provided with the original water inlet 31 be communicated with former water water entry 43.
Described composite filter element 4 comprises RO membrane cartridge 45, filter core lower cover 41 and filter element upper cover 46 is respectively equipped with at the two ends of RO membrane cartridge 45, outside RO membrane cartridge 45, between filter core lower cover 41 and filter element upper cover 46, be provided with the coaxial preposition filter core 42 arranged with RO membrane cartridge 45, between described preposition filter core 42 and RO membrane cartridge 45, be provided with preposition water flow passage 44.The concentrated stream that filter flask body 3 is provided with dense water out 33, RO membrane cartridge 45 goes out end and is provided with the dense water outlet passage be connected with dense water out 33.Described filter element upper cover 46 is provided with the rearmounted filter core placed cavity be communicated with the pure water outflow end of RO membrane cartridge 45, rearmounted filter core placed cavity is provided with the gland 48 of fixing rearmounted filter core, in rearmounted filter core placed cavity, rearmounted filter core 49 is housed, rearmounted filter core 49 is made up of rearmounted filter element upper cover, rearmounted filter core lower cover and rearmounted filter body, is provided with pure water outlet passage between gland 48 and rearmounted filter core 49.Filter flask body 3 is provided with the pure water be communicated with rearmounted filter core 49 and exports 32.The upper end of described rearmounted filter core placed cavity is provided with the top cover 47 be connected with filter element upper cover 46, and dense water outlet passage is located between gland 48 and top cover 47.
Filter flask lid mounting block is provided with between filter flask body 3 and filter flask lid 2.As shown in Figure 4, described filter flask lid 2 is upwards provided with two symmetrically arranged curved baffles 22 along its edge, form two symmetrically arranged installation gaps 23 between two curved baffles 22, be respectively equipped with stop block 21 along same rotation direction in the inner side of two curved baffles 22.
Described filter flask lid mounting block comprises symmetrically arranged two fixed bodies, as shown in Figure 5, each fixed body is equipped with the lower edge 12 and upper edge 13 that coordinate with filter flask body 3 and filter flask lid 2 respectively, fixed card slot 15 is formed between lower edge 12 and upper edge 13, being connected by connecting plate body between lower edge 12 and upper edge 13, also can being connected by some union levers.The middle part of described upper edge 13 is provided with the convex eaves 14 arranged downwards along its outer edge, the arc length of convex eaves 14 is less than the arc length of installation gap 23 between two curved baffles 22, and the width of convex eaves 14 is more than or equal to the height of curved baffle 22.The middle part of described lower edge 12 is provided with breach 11, convenient making.
During assembling, first assemble composite filter element 4, preposition filter core 42 is bonded on filter element upper cover 46, then RO membrane cartridge 45 is inserted in the hole of filter element upper cover 46, again filter core lower cover 41 is bonded on preposition filter core 42, gland 48 is covered on rearmounted filter core 49, rearmounted filter core 49 is placed in rearmounted filter core placed cavity, be tightened on by top cover 47 on filter element upper cover 46, namely composite filter element 4 has been assembled.Finally put into filter flask body 3, when filter flask lid 2 is installed, first filter flask lid 2 is inserted in filter flask body 3; Then the convex eaves 14 of two fixed bodies is faced toward installation gap 23, two fixed bodies of filter flask lid mounting block are blocked filter flask lid 2 and filter flask body 3 simultaneously, finally rotates to stop block 21 by two fixed bodies simultaneously, namely stop block 21 completes installation in fixed body contact.The dismounting of filter flask lid 2 is according to above step reverse operating.
During use, as shown in Figure 6, former water enters the former water water entry 43 of filter flask body 3 from original water inlet 31, preposition water flow passage 44 is entered by preposition filter core 42, RO membrane cartridge 45 is entered bottom RO membrane cartridge 45, pure water is flowed out from pure water outlet by rearmounted filter core 49, and dense water, by the dense water outlet passage between gland 48 and top cover 47, flows out from dense water out 33.
Claims (8)
1. a compact reverse osmosis water purifier filter core, it is characterized in that: comprise filter flask body and filter flask lid, in filter flask body, be provided with composite filter element, be provided with former water water entry between filter flask body and composite filter element, filter flask body is provided with the original water inlet be communicated with former water water entry;
Described composite filter element comprises RO membrane cartridge or nanofiltration membrane filter core, filter core lower cover and filter element upper cover is respectively equipped with at the two ends of RO membrane cartridge or nanofiltration membrane filter core, outer at RO membrane cartridge or nanofiltration membrane filter core, be provided with the preposition filter core coaxially arranged with RO membrane cartridge or nanofiltration membrane filter core between filter core lower cover and filter element upper cover, be provided with preposition water flow passage between described preposition filter core and RO membrane cartridge or nanofiltration membrane filter core; Filter flask body is provided with dense water out, and the concentrated stream of RO membrane cartridge or nanofiltration membrane filter core goes out end and is provided with the dense water outlet passage be connected with dense water out; Described filter element upper cover is provided with the rearmounted filter core placed cavity be communicated with the pure water outflow end of RO membrane cartridge or nanofiltration membrane filter core, rearmounted filter core placed cavity is provided with the gland of fixing rearmounted filter core, in rearmounted filter core placed cavity, rearmounted filter core is housed, filter flask body is provided with the pure water be communicated with rearmounted filter core and exports.
2. compact reverse osmosis water purifier filter core according to claim 1, is characterized in that: the upper end of described rearmounted filter core placed cavity is provided with the top cover be connected with filter element upper cover, and dense water outlet passage is located between gland and top cover.
3. compact reverse osmosis water purifier filter core according to claim 1, is characterized in that: rearmounted filter core is made up of rearmounted filter element upper cover, rearmounted filter core lower cover and rearmounted filter body, is provided with pure water outlet passage between gland and rearmounted filter core.
4. compact reverse osmosis water purifier filter core according to claim 1, it is characterized in that: between filter flask body and filter flask lid, be provided with filter flask lid mounting block, described filter flask covers and is upwards provided with two symmetrically arranged curved baffles along its edge, form two symmetrically arranged installation gaps between two curved baffles, be respectively equipped with stop block along same rotation direction in the inner side of two curved baffles; Described filter flask lid mounting block comprises symmetrically arranged two fixed bodies, each fixed body is equipped with the lower edge and upper edge that coordinate with filter flask body and filter flask lid respectively, fixed card slot is formed between lower edge and upper edge, the middle part of described upper edge is provided with the convex eaves arranged downwards along its outer edge, the arc length of convex eaves is less than the arc length of installation gap between two curved baffles.
5. compact reverse osmosis water purifier filter core according to claim 4, is characterized in that: the middle part of described lower edge is provided with breach.
6. compact reverse osmosis water purifier filter core according to claim 4, is characterized in that: the width of described convex eaves is more than or equal to the height of curved baffle.
7. compact reverse osmosis water purifier filter core according to claim 4, is characterized in that: be connected by connecting plate body between described lower edge and upper edge.
8. compact reverse osmosis water purifier filter core according to claim 4, is characterized in that: be connected by some union levers between described lower edge and upper edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129336.7A CN105540902B (en) | 2016-03-08 | 2016-03-08 | Close-coupled water purifier filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610129336.7A CN105540902B (en) | 2016-03-08 | 2016-03-08 | Close-coupled water purifier filter core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105540902A true CN105540902A (en) | 2016-05-04 |
| CN105540902B CN105540902B (en) | 2019-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610129336.7A Expired - Fee Related CN105540902B (en) | 2016-03-08 | 2016-03-08 | Close-coupled water purifier filter core |
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| CN (1) | CN105540902B (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018161441A1 (en) * | 2017-03-07 | 2018-09-13 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
| CN108569784A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Water cleaning systems |
| CN108569787A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element, composite filter element component and water cleaning systems |
| KR20180108409A (en) * | 2017-03-07 | 2018-10-04 | 포산 순더 메이디 워터 디스펜서 엠에프지. 컴퍼니, 리미티드 | Water purification system |
| CN109694139A (en) * | 2017-10-20 | 2019-04-30 | 九阳股份有限公司 | A kind of reverse osmosis composite filter element component |
| CN109694138A (en) * | 2017-10-20 | 2019-04-30 | 九阳股份有限公司 | Reverse osmosis composite filter element component |
| US10370268B2 (en) | 2017-03-07 | 2019-08-06 | Foshan Shunde Midea Water Dispenser Mfg. Co., Ltd. | Water purification system |
| CN110947232A (en) * | 2019-12-06 | 2020-04-03 | 广东韦博科技有限公司 | Postposition bubble film water purification system |
| CN111013238A (en) * | 2019-12-19 | 2020-04-17 | 广东韦博科技有限公司 | Composite bubble film water purification system |
| CN111115877A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115869A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115875A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115757A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | RO filter element group spare and have its composite filter, water treatment facilities |
| CN111115872A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element and water treatment device with same |
| WO2020168847A1 (en) * | 2019-02-18 | 2020-08-27 | 宿迁菡束环保设备有限公司 | Integrated cartridge filter assembly |
| CN111606441A (en) * | 2020-06-10 | 2020-09-01 | 上海纯米电子科技有限公司 | Large-flux water purifier |
| CN111689596A (en) * | 2019-03-13 | 2020-09-22 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier and control method thereof |
| CN114307356A (en) * | 2022-01-28 | 2022-04-12 | 厦门佳浴智能卫浴有限公司 | Small-size filter flask subassembly of multilayer purification of compound integrated RO filter core of intelligence single-stage |
| CN114804384A (en) * | 2022-04-27 | 2022-07-29 | 北京小米移动软件有限公司 | Water purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10370268B2 (en) | 2017-03-07 | 2019-08-06 | Foshan Shunde Midea Water Dispenser Mfg. Co., Ltd. | Water purification system |
| KR101995825B1 (en) * | 2017-03-07 | 2019-07-03 | 포산 순더 메이디 워터 디스펜서 엠에프지. 컴퍼니, 리미티드 | Water purification system |
| CN108569787A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element, composite filter element component and water cleaning systems |
| KR20180108408A (en) * | 2017-03-07 | 2018-10-04 | 포산 순더 메이디 워터 디스펜서 엠에프지. 컴퍼니, 리미티드 | Water purification system |
| KR20180108409A (en) * | 2017-03-07 | 2018-10-04 | 포산 순더 메이디 워터 디스펜서 엠에프지. 컴퍼니, 리미티드 | Water purification system |
| WO2018161441A1 (en) * | 2017-03-07 | 2018-09-13 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
| CN108569784A (en) * | 2017-03-07 | 2018-09-25 | 佛山市顺德区美的饮水机制造有限公司 | Water cleaning systems |
| CN108569784B (en) * | 2017-03-07 | 2023-09-05 | 佛山市顺德区美的饮水机制造有限公司 | water purification system |
| CN108569787B (en) * | 2017-03-07 | 2023-09-19 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element, composite filter element assembly and water purification system |
| KR101995359B1 (en) * | 2017-03-07 | 2019-07-02 | 포산 순더 메이디 워터 디스펜서 엠에프지. 컴퍼니, 리미티드 | Water purification system |
| CN109694138B (en) * | 2017-10-20 | 2021-11-09 | 九阳股份有限公司 | Reverse osmosis composite filter element assembly |
| CN109694138A (en) * | 2017-10-20 | 2019-04-30 | 九阳股份有限公司 | Reverse osmosis composite filter element component |
| CN109694139A (en) * | 2017-10-20 | 2019-04-30 | 九阳股份有限公司 | A kind of reverse osmosis composite filter element component |
| CN109694139B (en) * | 2017-10-20 | 2021-12-03 | 九阳股份有限公司 | Reverse osmosis composite filter element assembly |
| CN111115877A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115757A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | RO filter element group spare and have its composite filter, water treatment facilities |
| CN111115872A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element and water treatment device with same |
| CN111115875A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115869A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| WO2020168847A1 (en) * | 2019-02-18 | 2020-08-27 | 宿迁菡束环保设备有限公司 | Integrated cartridge filter assembly |
| CN111689596A (en) * | 2019-03-13 | 2020-09-22 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier and control method thereof |
| CN110947232A (en) * | 2019-12-06 | 2020-04-03 | 广东韦博科技有限公司 | Postposition bubble film water purification system |
| CN111013238A (en) * | 2019-12-19 | 2020-04-17 | 广东韦博科技有限公司 | Composite bubble film water purification system |
| CN111606441A (en) * | 2020-06-10 | 2020-09-01 | 上海纯米电子科技有限公司 | Large-flux water purifier |
| CN114307356A (en) * | 2022-01-28 | 2022-04-12 | 厦门佳浴智能卫浴有限公司 | Small-size filter flask subassembly of multilayer purification of compound integrated RO filter core of intelligence single-stage |
| CN114804384A (en) * | 2022-04-27 | 2022-07-29 | 北京小米移动软件有限公司 | Water purifier |
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