CN111659255A - Water purification system and water purification unit - Google Patents
Water purification system and water purification unit Download PDFInfo
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- CN111659255A CN111659255A CN201910182466.0A CN201910182466A CN111659255A CN 111659255 A CN111659255 A CN 111659255A CN 201910182466 A CN201910182466 A CN 201910182466A CN 111659255 A CN111659255 A CN 111659255A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 381
- 238000000746 purification Methods 0.000 title claims abstract description 81
- 238000011010 flushing procedure Methods 0.000 claims abstract description 67
- 239000012535 impurity Substances 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract 2
- 239000002351 wastewater Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 6
- 238000001223 reverse osmosis Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- 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
Abstract
The invention discloses a water purification system and water purification equipment, the water purification system includes: the water inlets of the first filter element and the second filter element are connected in parallel and are communicated with a water source, and the pure water outlets of the first filter element and the second filter element are connected in parallel and are communicated with a water intake; and one end of the first flushing pipeline is communicated with a pure water outlet of the first filter element, and the other end of the first flushing pipeline is communicated with a water inlet of the second filter element. In the water preparation process after flushing, the water purification system provided by the invention has the advantages that the first cup of water obtained by a user contains the pure water which flows out from the pure water channel of the first filter element and is secondarily filtered by the second filter element, so that the soluble impurities of the first cup of water are reduced, the purity of the first cup of water in water preparation is improved, and the practicability of the water purification system is improved.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a water purification system and water purification equipment.
Background
Most of the traditional water purifiers adopt a single reverse osmosis filter element, and the water production flux of the single reverse osmosis filter element is limited, so that the requirement of a consumer for large water intake in a short time cannot be met. The increase of water flux is realized through adopting two filter cores to prior art, but when the purifier got into standby state, the pure water diffusion in the dense water in the reverse osmosis filter core inlet channel and the former aquatic of dissolubility solid was because there is not high hydraulic effect, can be to reverse osmosis filter core product water passageway, and this just leads to when the purifier is next made water, and the dissolubility solid content of the first glass of water that the user got is on the high side, has reduced the practicality of water purifier.
Disclosure of Invention
The invention mainly aims to provide a water purification system, and aims to solve the technical problem of improving the practicability of a water purifier.
In order to achieve the above object, the present invention provides a water purification system, comprising:
the water inlets of the first filter element and the second filter element are connected in parallel and are communicated with a water source, and the pure water outlets of the first filter element and the second filter element are connected in parallel and are communicated with a water intake;
and one end of the first flushing pipeline is communicated with the pure water outlet of the first filter element, and the other end of the first flushing pipeline is communicated with the water inlet of the second filter element.
Preferably, the water purification system further comprises a water outlet pipeline, one end of the water outlet pipeline is communicated with the water intake, and the other end of the water outlet pipeline is communicated with pure water outlets of the first filter element and the second filter element; the water inlet end of the first flushing pipeline is arranged between the pure water outlet of the first filter element and the water inlet end of the water outlet pipeline.
Preferably, the water purification system further comprises a first water outlet valve arranged between the water inlet end of the first flushing pipeline and the water inlet end of the water outlet pipeline.
Preferably, the water purification system further comprises a first one-way valve arranged on the first flushing pipeline, and the first one-way valve is communicated from the pure water outlet of the first filter element to the water inlet of the second filter element.
Preferably, the water purification system further comprises a first water inlet valve arranged between the water inlet of the second filter element and a water source.
Preferably, the water purification system further comprises a water inlet pipeline, one end of the water inlet pipeline is communicated with a water source, and the other end of the water inlet pipeline is communicated with the water inlets of the first filter element and the second filter element; the first water inlet valve is arranged between the water inlet pipeline and the water outlet end of the first flushing pipeline.
Preferably, the water purification system further comprises a water outlet pipeline, one end of the water outlet pipeline is communicated with the water intake, and the other end of the water outlet pipeline is communicated with pure water outlets of the first filter element and the second filter element; the water purification system further comprises a second one-way valve arranged between the pure water outlet of the second filter element and the water inlet end of the water outlet pipeline, and the second one-way valve is communicated from the pure water outlet of the second filter element to the water outlet pipeline.
Preferably, the water purification system further comprises a second water outlet valve arranged on the first flushing pipeline.
Preferably, the water purification system further comprises a second flushing pipeline, one end of the second flushing pipeline is communicated with the water inlet of the first filter element, and the other end of the second flushing pipeline is communicated with the pure water outlet of the second filter element.
The invention also provides a water purification device, comprising a water purification system, which comprises: the water inlets of the first filter element and the second filter element are connected in parallel and are communicated with a water source, and the pure water outlets of the first filter element and the second filter element are connected in parallel and are communicated with a water intake; and one end of the first flushing pipeline is communicated with the pure water outlet of the first filter element, and the other end of the first flushing pipeline is communicated with the water inlet of the second filter element.
According to the water purification system, the first filter element and the second filter element are connected in parallel, and the pure water outlet of the first filter element and the water inlet of the second filter element are connected through the first flushing pipeline, so that water with impurities in a pure water channel of the first filter element can enter the second filter element through the first flushing pipeline for secondary filtration in the flushing process of the water purification system, and pure water is formed again; from this, at the system water in-process after washing, the first cup of water that the user got has contained the pure water passageway outflow from first filter core promptly to through second filter core secondary filter's pure water, reduced the solubility impurity of first cup of water, the purity of first cup of water when having improved system water, thereby improved water purification system's practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a water purification system according to an embodiment of the present invention;
fig. 2 is a schematic view of a water purification system according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | |
30 | |
| 40 | |
50 | |
60 | |
| 70 | |
80 | First water inlet valve | 90 | |
| 100 | |
110 | Waste water valve |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a water purification system.
In an embodiment of the present invention, as shown in fig. 1, the water purification system includes:
the water purifier comprises a first filter element 10 and a second filter element 20, wherein water inlets of the first filter element 10 and the second filter element 20 are connected in parallel and are communicated with a water source 30, and pure water outlets of the first filter element 10 and the second filter element 20 are connected in parallel and are communicated with a water intake 40;
and one end of the first flushing pipeline 50 is communicated with the pure water outlet of the first filter element 10, and the other end of the first flushing pipeline is communicated with the water inlet of the second filter element 20.
In this embodiment, the water inlets of the first filter element 10 and the second filter element 20 are connected to the same water source 30, that is, the water from the water source 30 is divided into the first filter element 10 and the second filter element 20, and the pure water filtered by the first filter element 10 and the second filter element 20 is converged to the water intake 40 for the user to take. The first filter element 10 and the second filter element 20 are reverse osmosis membrane filter elements, that is, the raw water forms wastewater and pure water by the action of high water pressure and the osmosis action of the reverse osmosis membrane, the wastewater flows out from the wastewater outlet, and the pure water flows out from the pure water outlet. When the water purification system stops working, the water pressure of the first filter element 10 and the second filter element 20 is reduced, so that the soluble impurities can be diffused into the pure water channel of the filter elements, and the purity of the water retained in the pure water channel is reduced; if the water purification system does not wash, the water becomes the first cup of water obtained by the user when the water purification system works for water production next time. The water inlet end of the first flushing pipeline 50 is communicated with the pure water outlet of the first filter element 10, the water outlet end is communicated with the water inlet of the second filter element 20, and in the flushing process, water retained in the pure water channel of the first filter element 10 flows to the second filter element 20 through the first flushing pipeline 50 for secondary filtration. The retained water of the first filter element 10 is filtered by the second filter element 20 to form waste water and pure water again, so that after the washing is finished, in the water making process, the soluble impurities of the first cup of water obtained by the user can be effectively reduced, the purity of the first cup of water is improved, and the practicability of the water purification system is improved.
It should be noted that the second filter element 20 further has a waste water gap, the water purification system further includes a waste water valve 110 disposed at the waste water gap of the second filter element 20, and the waste water valve 110 is used to control the flow rate of the water passing through the waste water gap, so that the first filter element 10 can be washed with different water flows, and different washing requirements can be met. For example, when the waste water valve 110 is opened, the flow rate of the water passing through the waste water port is large, and large-flow flushing can be realized; when the waste water valve 110 is closed, the water flow of the waste water inlet is small, and the flushing with small flow can be realized.
In the water purification system, the first filter element 10 and the second filter element 20 are connected in parallel, and the first flushing pipeline 50 is connected with the pure water outlet of the first filter element 10 and the water inlet of the second filter element 20, so that in the flushing process of the water purification system, water with impurities in a pure water channel of the first filter element 10 can enter the second filter element 20 through the first flushing pipeline 50 for secondary filtration to form pure water again; from this, at the system water in-process after washing, the first cup of water that the user got has contained the pure water passageway outflow from first filter core 10 promptly to through the pure water of 20 secondary filter of second filter cores, reduced the solubility impurity of first cup of water, the purity of first cup of water when having improved system water, thereby improved water purification system's practicality.
Further, as shown in fig. 1, the water purification system further includes a water outlet pipeline 60, one end of the water outlet pipeline 60 is communicated with the water intake 40, and the other end is communicated with the pure water outlets of the first filter element 10 and the second filter element 20; the water inlet end of the first flushing pipeline 50 is arranged between the pure water outlet of the first filter element 10 and the water inlet end of the water outlet pipeline 60. In the present embodiment, the water inlet end of the water outlet pipeline 60 is communicated with the pure water outlets of the first filter element 10 and the second filter element 20, and the water outlet end is communicated with the water intake 40, that is, the pure water flowing out from the pure water outlets of the first filter element 10 and the second filter element 20 flows to the water intake 40 after converging in the water outlet pipeline 60. The water inlet end of the first flushing pipeline 50 is arranged between the pure water outlet of the first filter element 10 and the water inlet end of the water outlet pipeline 60, so that the pure water flowing out of the pure water port of the second filter element 20 can be prevented from flowing into the first flushing pipeline 50, and the effective utilization rate of the first flushing pipeline 50 and the water purification efficiency of the second filter element 20 are improved.
Further, as shown in fig. 1, the water purification system further includes a first water outlet valve disposed between the water inlet end of the first flushing pipeline 50 and the water inlet end of the water outlet pipeline 60. In this embodiment, the first water outlet valve can be used to control the connection and disconnection between the pure water outlet of the second filter element 20 and the water outlet pipeline 60, so that the second filter element 20 and the water outlet pipeline 60 can be disconnected during the flushing process of the water purification system, and the water flowing out from the pure water outlet of the second filter element 20 can completely enter the first flushing pipeline 50, thereby improving the flushing effect.
Further, as shown in fig. 1, the water purification system further includes a first check valve 70 disposed in the first flushing pipe 50, and the first check valve 70 is conducted from the pure water outlet of the first filter element 10 to the water inlet of the second filter element 20. In this embodiment, the first check valve 70 is used for preventing that the raw water flowing to the water inlet of the second filter element 20 flows back to the pure water outlet of the first filter element 10 through the first flushing pipeline 50 in the water production process, so as to avoid reducing the water purification effect of the water purification system, and ensure the stability of the water production process.
Further, as shown in fig. 1, the water purification system further includes a first inlet valve 80 disposed between the inlet of the second filter element 20 and the water source 30. In this embodiment, the first water inlet valve 80 is used to control the on-off of a water path between the water source 30 and the water inlet of the second filter element 20, and specifically, the water purification system further includes a water inlet pipeline 90, one end of the water inlet pipeline 90 is communicated with the water source 30, and the other end is communicated with the water inlets of the first filter element 10 and the second filter element 20; the first water inlet valve 80 is disposed between the water inlet pipeline 90 and the water outlet end of the first flushing pipeline 50. The water inlet end of the water inlet pipeline 90 is communicated with the water source 30, and the water outlet end is communicated with the water inlets of the first filter element 10 and the second filter element 20, that is, the water of the water source 30 is divided to the water inlets of the first filter element 10 and the second filter element 20 at the water outlet end of the water inlet pipeline 90. The first water inlet valve 80 is arranged between the water outlet end of the water inlet pipeline 90 and the water outlet end of the first flushing pipeline 50, so that in the flushing process, the first water inlet valve 80 can control the water path between the first flushing pipeline 50 and the water inlet of the first filter element 10 to be disconnected, water in the water source 30 can flow into the first filter element 10 completely to flush the first filter element 10, the water pressure of the first filter element 10 is increased, and the flushing effect and the flushing efficiency can be improved.
Further, as shown in fig. 1, the water purification system further includes a water outlet pipeline 60, one end of the water outlet pipeline 60 is communicated with the water intake 40, and the other end is communicated with the pure water outlets of the first filter element 10 and the second filter element 20; the water purification system further comprises a second one-way valve 100 disposed between the pure water outlet of the second filter element 20 and the water inlet end of the water outlet pipeline 60, and the second one-way valve 100 is communicated from the pure water outlet of the second filter element 20 to the water outlet pipeline 60. In this embodiment, the second check valve 100 is used to prevent the water with soluble impurities flowing out from the pure water outlet of the first filter element 10 from flowing back into the second filter element 20 to cause pollution or cause insufficient forward water pressure of the second filter element 20 to cause ineffective filtration during the flushing process, thereby improving the stability of the operation of the second filter element 20 during the flushing process.
Further, the water purification system further comprises a second water outlet valve disposed in the first flushing pipeline 50. In this embodiment, the second outlet valve is used for controlling the on-off of the first flushing pipeline 50, so that in the water preparing process of the water purifying system, the second outlet valve can disconnect the first flushing pipeline 50, the pure water flowing out from the pure water outlet of the first filter element 10 is prevented from being shunted to the first flushing pipeline 50, and the water preparing efficiency of the water purifying system is improved.
Further, as shown in fig. 2, the water purification system further includes a second flushing pipeline, one end of the second flushing pipeline is communicated with the water inlet of the first filter element 10, and the other end of the second flushing pipeline is communicated with the pure water outlet of the second filter element 20. In this embodiment, the second washes the effect of pipeline the same with first washing pipeline 50, can realize washing to second filter core 20 to can further reduce the impurity content of the first glass of water purification system, further improve water purification system's practicality. It can be understood that the second flushing pipeline is provided with a third one-way valve, the water purification system can further comprise a third water inlet valve, the third water inlet valve is arranged between the water outlet end of the water inlet pipeline and the water inlet of the first filter element, and in the flushing process, the first water inlet valve is closed, the third water inlet valve is opened, the first filter element can be flushed, so that the flushing of the first filter element and the flushing of the second filter element can be realized, and the practicability of the water purification system is further improved.
In practical application, the water purification system further comprises a third filter element, a second water inlet valve and a booster pump which are sequentially arranged on the water inlet pipeline 90, and a third one-way valve and a high-pressure switch which are sequentially arranged on the water outlet pipeline 60. The third filter element can be a coarse filter element for performing preliminary filtration on raw water, and the water after the preliminary filtration flows to the water inlets of the first filter element 10 and the second filter element 20 after being pressurized by the booster pump, so that the first filter element 10 and the second filter element 20 have sufficient working water pressure. The high-pressure switch is used for controlling the on-off of the water outlet pipeline 60 according to the overall water pressure of the water purification system, if the water pressure is large enough, the first filter element 10 and the second filter element 20 work normally, water in the system is effectively filtered, and therefore the high-pressure switch enables the water outlet pipeline 60 to be communicated, and a user can take filtered pure water. The third check valve is used for preventing the pure water from flowing back from the water outlet pipeline 60, and simultaneously ensuring that the pure water at the high-pressure switch has enough water pressure after the water source 30 stops supplying water, so that the water outlet pipeline 60 is kept communicated, and a user can conveniently continue to take the pure water.
To sum up, water purification system has the system water operating mode, washes operating mode and shut down the operating mode, and in the course of the work of each operating mode, the behavior of each component of water purification system is as shown in the following table:
working state table of element in each working condition of water purification system
Through the cooperation of each component in each operating mode for water purification system can work high-efficiently and stably, and both accessible two filter cores realize great water yield, can improve the purity of restarting the first water of back again, from this, improved water purification system's practicality.
The invention further provides a water purification device, which comprises a water purification system, the specific structure of the water purification system refers to the above embodiments, and the water purification device adopts all the technical schemes of all the above embodiments, so that the water purification device at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A water purification system, comprising:
the water inlets of the first filter element and the second filter element are connected in parallel and are communicated with a water source, and the pure water outlets of the first filter element and the second filter element are connected in parallel and are communicated with a water intake;
and one end of the first flushing pipeline is communicated with the pure water outlet of the first filter element, and the other end of the first flushing pipeline is communicated with the water inlet of the second filter element.
2. The water purification system of claim 1, further comprising a water outlet pipeline, one end of the water outlet pipeline is communicated with the water intake, and the other end of the water outlet pipeline is communicated with the pure water outlets of the first filter element and the second filter element; the water inlet end of the first flushing pipeline is arranged between the pure water outlet of the first filter element and the water inlet end of the water outlet pipeline.
3. The water purification system of claim 2, further comprising a first outlet valve disposed between the inlet end of the first flushing circuit and the inlet end of the outlet circuit.
4. The water purification system of claim 1, further comprising a first one-way valve disposed in the first flushing line, the first one-way valve being open from the pure water outlet of the first filter element toward the water inlet of the second filter element.
5. The water purification system of claim 1, further comprising a first water inlet valve disposed between the water inlet of the second filter element and a water source.
6. The water purification system of claim 5, further comprising a water inlet line, one end of the water inlet line being in communication with a water source and the other end being in communication with the water inlets of the first and second filter elements; the first water inlet valve is arranged between the water inlet pipeline and the water outlet end of the first flushing pipeline.
7. The water purification system of claim 1, further comprising a water outlet pipeline, one end of the water outlet pipeline is communicated with the water intake, and the other end of the water outlet pipeline is communicated with the pure water outlets of the first filter element and the second filter element; the water purification system further comprises a second one-way valve arranged between the pure water outlet of the second filter element and the water inlet end of the water outlet pipeline, and the second one-way valve is communicated from the pure water outlet of the second filter element to the water outlet pipeline.
8. The water purification system of claim 1, further comprising a second outlet valve disposed in the first flushing line.
9. The water purification system of any one of claims 1 to 8, further comprising a second flushing line, one end of the second flushing line being in communication with the water inlet of the first filter element and the other end being in communication with the pure water outlet of the second filter element.
10. A water purification apparatus, comprising a water purification system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182466.0A CN111659255A (en) | 2019-03-08 | 2019-03-08 | Water purification system and water purification unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910182466.0A CN111659255A (en) | 2019-03-08 | 2019-03-08 | Water purification system and water purification unit |
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| CN111659255A true CN111659255A (en) | 2020-09-15 |
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| CN201910182466.0A Pending CN111659255A (en) | 2019-03-08 | 2019-03-08 | Water purification system and water purification unit |
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2019
- 2019-03-08 CN CN201910182466.0A patent/CN111659255A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201952300U (en) * | 2011-03-01 | 2011-08-31 | 刘进学 | Energy-saving reverse osmosis water purifier |
| CN104944523A (en) * | 2014-03-27 | 2015-09-30 | 唐伟钊 | Water purifying machine or water purifying equipment with secondary reverse osmosis membrane or nanofiltration membrane or ultrafiltration membrane |
| CN205170448U (en) * | 2015-10-26 | 2016-04-20 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system and water purifier that has it |
| WO2017084570A1 (en) * | 2015-11-20 | 2017-05-26 | 艾欧史密斯（南京）水处理产品有限公司 | Method for controlling water purifier, and water purifier |
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Application publication date: 20200915 |
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| RJ01 | Rejection of invention patent application after publication |