CN110606582A - Water purifying device - Google Patents
Water purifying device Download PDFInfo
- Publication number
- CN110606582A CN110606582A CN201810611612.2A CN201810611612A CN110606582A CN 110606582 A CN110606582 A CN 110606582A CN 201810611612 A CN201810611612 A CN 201810611612A CN 110606582 A CN110606582 A CN 110606582A
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- storage barrel
- level sensor
- liquid level
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000001914 filtration Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 238000001728 nano-filtration Methods 0.000 claims description 3
- 238000001223 reverse osmosis Methods 0.000 claims description 3
- 238000000108 ultra-filtration Methods 0.000 claims description 3
- 230000001580 bacterial effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000003809 water extraction Methods 0.000 abstract description 2
- 239000008399 tap water Substances 0.000 description 11
- 235000020679 tap water Nutrition 0.000 description 11
- 230000001960 triggered effect Effects 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
Landscapes
- 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)
- Water Treatment By Sorption (AREA)
Abstract
A water purifying device is characterized by comprising a primary filtering module, a water storage barrel, a secondary filtering module, a water outlet valve and a fifth pipeline, wherein a first liquid level sensor, a second liquid level sensor and a third liquid level sensor are sequentially arranged in the water storage barrel from high to low according to the height; the water inlet end of the secondary filtering module is connected with the first water outlet end of the water storage barrel through a second pipeline. The water storage barrel is beneficial to stabilizing the water pressure, and the water between the secondary filtering module and the water outlet valve is drained before water extraction or reused in advance. On the one hand the water economy resource, on the other hand prevents bacterial growing, and the third can also prevent that the pipeline from freezing to lead to the system to break and leak winter.
Description
Technical Field
The invention relates to a water purifying device.
Background
Because of environmental pollution and water quality deterioration, water purification products are more and more concerned by people, and the water purification products gradually enter every family. At present, people choose to purchase water purification products mainly pay attention to several aspects: filtering process, water outlet flow, wastewater proportion and the like. Since the tap water pressure is different in no place, the tap water pressure is greatly changed at different times in the same place. Due to the low water pressure, when a plurality of people use the water purifier, the water outlet flow is always unsatisfied, the general flow is small, and the user needs to wait for a cup of water.
There is a solution to this situation on the market: the water purifier is matched with a pressure barrel. Thus, the stability of the water outlet flow is ensured. However, this also brings with it a great negative problem: the pressure barrel is a hotbed for breeding bacteria. Moreover, since the pressure barrel is generally arranged at the tail end, water received by a user often contains a large amount of bacteria, and some water contains dozens of bacteria or even hundreds of times more than the bacteria in tap water.
In addition, low water pressure is a problem, and too high water pressure is a common problem. For example, in Chongqing areas, the tap water pressure is extremely high due to the uniqueness of the geographical position, and in some areas, the tap water pressure is even higher than 1.2MPa set by the pressure maintaining test of water purifier products. Under the pressure, the safety of the water purifier product is a great test. Some products have a large number of water leakage accidents.
Disclosure of Invention
The present invention provides a water purifying device with stable water pressure and saving water, which aims at the technical situation.
The invention aims to solve the technical problem of providing a water purifying device which can reduce the growth of bacteria and can prevent a pipeline from being broken due to icing.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water purifying device is characterized by comprising
The primary filtering module can filter out large-particle impurities;
the water storage barrel is provided with an air outlet, a first liquid level sensor and a second liquid level sensor are sequentially arranged in the water storage barrel from high to low according to the height, the water inlet end of the water storage barrel is connected with the water outlet end of the primary filtering module through a first pipeline, and a first electromagnetic valve is arranged on the first pipeline;
the water inlet end of the second-stage filtering module is connected with the first water outlet end of the water storage barrel through a second pipeline, a water pump is arranged on the second pipeline, the wastewater outlet end of the second-stage filtering module is connected with the water storage barrel through a third pipeline, and a second electromagnetic valve is arranged on the third pipeline;
the water inlet end of the water outlet valve is connected with the purified water outlet end of the secondary filtering module through a fourth pipeline, and the water outlet valve is provided with a Hall sensor electrically connected with the water pump; and
the high-level end of the fifth pipeline is connected with the fourth pipeline, the low-level end of the fifth pipeline is connected with the water storage barrel, and a third electromagnetic valve is arranged on the fifth pipeline;
the first liquid level sensor and the second liquid level sensor are electrically connected with the first electromagnetic valve.
Furthermore, the primary filtering module is at least one of a PP cotton filter element, an activated carbon filter element, a microfiltration membrane filter element or an ultrafiltration membrane filter element.
A water purifying device is characterized by comprising
The water storage barrel is internally provided with a second liquid level sensor and a third liquid level sensor in sequence from high to low according to the height and is provided with a water adding port;
the water inlet end of the second-stage filtering module is connected with the first water outlet end of the water storage barrel through a second pipeline, a water pump is arranged on the second pipeline, the wastewater outlet end of the second-stage filtering module is connected with the water storage barrel through a third pipeline, and a second electromagnetic valve is arranged on the third pipeline; and
and the water inlet end of the water outlet valve is connected with the purified water outlet end of the secondary filtering module through a fourth pipeline.
Further, the secondary filtering module is at least one of a nanofiltration membrane filter element or a reverse osmosis membrane filter element.
The safety and the health of quality of water are considered, the water storage bucket in be equipped with third level sensor and water quality monitoring sensor, aforementioned third level sensor is lower than second level sensor and is close to water storage bucket diapire, the water storage bucket is external to have the drain pipe, is equipped with the fourth solenoid valve with the automatically controlled connection of aforementioned third level sensor on this drain pipe, this fourth solenoid valve still with the automatically controlled connection of aforementioned water quality monitoring sensor.
Furthermore, the water quality monitoring sensor is at least one of a TDS monitoring head or an organic matter sensor.
Compared with the prior art, the invention has the advantages that: the water storage barrel is beneficial to stabilizing the water pressure, and the water between the secondary filtering module and the water outlet valve is drained before water extraction or reused in advance. On the one hand the water economy resource, on the other hand prevents bacterial growing, and the third can also prevent in winter that the pipeline freezes and leads to the system to break and leak, and waste water recycles the water economy resource simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a schematic structural diagram of embodiment 2.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Embodiment 1, as shown in fig. 1, the water purifying apparatus in this embodiment is suitable for a tap water area, and specifically includes a first-stage filtering module 1, a water storage tank 3, a second-stage filtering module 2, a water outlet valve 7, a first pipeline 51, a second pipeline 52, a third pipeline 53, a fourth pipeline 54, and a fifth pipeline 55.
The primary filtering module 1 can filter out large-particle impurities, and the primary filtering module 1 in the embodiment can be one or more of a PP cotton filter element, an activated carbon filter element, a microfiltration membrane filter element or an ultrafiltration membrane filter element.
The water storage bucket 3 has gas vent 34, and inside is equipped with first level sensor 31, second level sensor 32 and third level sensor 33 from high to low in proper order according to the height, still is equipped with water quality monitoring sensor 35 in the water storage bucket 3, and third level sensor 33 and water quality monitoring sensor 35 are close to 3 diapire settings of water storage bucket.
The water inlet end of the water storage barrel 3 is connected with the water outlet end of the primary filtering module 1 through a first pipeline 51, and a first electromagnetic valve 61 is arranged on the first pipeline 51; the water storage barrel 3 is externally connected with a drain pipe 56, a fourth electromagnetic valve 66 electrically connected with the third liquid level sensor 33 is arranged on the drain pipe 56, and the fourth electromagnetic valve 66 is also electrically connected with the water quality monitoring sensor 35.
The second-stage filtering module 2 can filter out small particle impurities, and the second-stage filtering module 2 in the embodiment can be one or more of a nanofiltration membrane filter element or a reverse osmosis membrane filter element.
The water inlet end of the secondary filtering module 2 is connected with the first water outlet end of the water storage barrel 3 through a second pipeline 52, a water pump 62 is arranged on the second pipeline 52, the wastewater outlet end of the secondary filtering module 2 is connected with the water storage barrel 3 through a third pipeline 53, and a second electromagnetic valve 63 is arranged on the third pipeline 53.
The water inlet end of the water outlet valve 7 is connected with the purified water outlet end of the secondary filtering module 2 through a fourth pipeline 54, and a Hall sensor electrically connected with the water pump 62 is arranged on the water outlet valve 7 and is not shown in the figure; the water outlet valve 7 in this embodiment may be a faucet with a built-in hall sensor, and the water pump 62 is a self-priming pump.
The high end of the fifth pipeline 55 is connected with the fourth pipeline 54, the low end is connected with the water storage barrel 3, and the fifth pipeline 55 is provided with a third electromagnetic valve 65;
the first liquid level sensor 31 and the second liquid level sensor 32 are both electrically connected with the first electromagnetic valve 61.
The water quality monitoring sensor 35 in this embodiment may be one or more of a TDS monitoring head or an organic matter sensor.
The tap water is roughly filtered by the primary filtering module 1 to filter out large-particle impurities such as silt, rust, colloid and the like. The first electromagnetic valve 61 controls the running water to enter the water storage barrel. When the first level sensor is triggered, the first solenoid valve 61 closes. When the water outlet valve 7 is opened, the Hall sensor is triggered, and the water pump 62 is controlled to start. The water pump 62 sucks water from the water storage tub 3. When the second level sensor 32 is triggered, the first solenoid valve 61 is opened and tap water is supplied.
Every time the water intaking is finished, the first electromagnetic valve 61 is opened until the first liquid level sensor 31 is triggered, the water intaking process can be smoothly carried out every time, and the phenomenon that the water flow is too small or water cannot flow due to insufficient water in the water storage barrel 3 is prevented.
When the water is taken out, a section of clean water, namely the water on the fourth pipeline 54, exists between the secondary filtering module 2 and the water outlet valve 7. When a general user gets water at every time, the user can make the water outlet valve 7 flow for a period of time before getting water and then receive the water, and the user can worry about the breeding of water bacteria on the section of pipeline. This process is very water-consuming. In this embodiment, it is necessary to empty the water between the secondary filter module 2 and the outlet valve 7 before the water is extracted, or to reuse the water in advance. On the one hand the water economy resource, on the other hand prevents bacterial growing, and the third can also prevent that the pipeline from freezing to lead to the system to break and leak winter.
The control method comprises the following steps: when water taking is finished each time, the Hall sensor is triggered after the water outlet valve is closed, and the water pump stops running. Then the third solenoid valve 65 is opened, and the water between the secondary filtering module 2 and the water outlet valve 7 flows into the water storage barrel 3 by using gravity.
The waste water rate of the secondary filter module 2 is too high. In fact, the waste water discharged from the waste water outlet is equivalent to the concentration of tap water, and a large amount of available water still exists in the waste water. The waste water port of the secondary filtering module 2 is connected to the water storage barrel 3 and is mixed with tap water for reuse.
The water quality monitoring sensor 35 in this embodiment only adopts the TDS monitoring head, and its control mode: when the TDS monitoring head detects that the TDS of the water in the water storage bucket is larger than a value (if the a value is set to be 800), the need of drainage treatment is judged. The first solenoid valve 61 is closed (preventing water from being wasted), the water pump 62 is stopped, and the third solenoid valve 65 is closed. The fourth solenoid valve 66 is opened and water is drained. When the third level sensor 33 is triggered, the fourth solenoid valve 66 closes. The first solenoid valve 61 opens the water supply. When the second level sensor 32 is triggered, the water intake process continues.
In addition, the value a can be set to different values according to different places, for example, the TDS of tap water is smaller, the value a can be set to be smaller (for example, the value a is set to be 400), and the problem that the service life of the filter element is shortened due to the fact that the filter element filters water with high TDS value for a long time is avoided while water is saved.
Water quality monitoring sensor 35 in this embodiment can combine the organic matter sensor, detects through organic matter and TDS, dual control waste water discharge time.
Embodiment 2, as shown in fig. 2, does not set up one-level filter module in this embodiment, does not set up first level sensor in the water storage bucket 3, other structures and operation refer to embodiment 1, and this embodiment is applicable to the area that does not have the running water, and the user oneself gets water, if the water of choosing etc.. When the liquid level triggers the second liquid level sensor 32, an alarm device may be provided to prompt the user to add water.
Claims (6)
1. A water purifying device is characterized by comprising
A primary filtering module (1) capable of filtering out large-particle impurities;
a water storage barrel (3) with an air outlet (34), wherein a first liquid level sensor (31) and a second liquid level sensor (32) are sequentially arranged in the water storage barrel (3) from high to low according to the height, the water inlet end of the water storage barrel (3) is connected with the water outlet end of the primary filtering module (1) through a first pipeline (51), and a first electromagnetic valve (61) is arranged on the first pipeline (51);
the water inlet end of the secondary filtering module (2) is connected with the first water outlet end of the water storage barrel (3) through a second pipeline (52), a water pump (62) is arranged on the second pipeline (52), the wastewater outlet end of the secondary filtering module (2) is connected with the water storage barrel (3) through a third pipeline (53), and a second electromagnetic valve (63) is arranged on the third pipeline (53);
the water inlet end of the water outlet valve (7) is connected with the purified water outlet end of the secondary filtering module (2) through a fourth pipeline (54), and a Hall sensor electrically connected with the water pump (62) is arranged on the water outlet valve (7); and
a fifth pipeline (55), the high end of which is connected with the fourth pipeline (54), the low end of which is connected with the water storage barrel (3), and a third electromagnetic valve (65) is arranged on the fifth pipeline (55);
the first liquid level sensor (31) and the second liquid level sensor (32) are electrically connected with the first electromagnetic valve (61).
2. The water purification device according to claim 1, wherein the primary filtration module (1) is at least one of a PP cotton filter element, an activated carbon filter element, a microfiltration membrane filter element or an ultrafiltration membrane filter element.
3. A water purifying device is characterized by comprising
The water storage barrel (3) is internally provided with a second liquid level sensor (32) and a third liquid level sensor (33) in sequence from high to low according to the height, and the water storage barrel (3) is provided with a water adding port;
the water inlet end of the secondary filtering module (2) is connected with the first water outlet end of the water storage barrel (3) through a second pipeline (52), a water pump (62) is arranged on the second pipeline (52), the wastewater outlet end of the secondary filtering module (2) is connected with the water storage barrel (3) through a third pipeline (53), and a second electromagnetic valve (63) is arranged on the third pipeline (53); and
and the water inlet end of the water outlet valve (7) is connected with the purified water outlet end of the secondary filtering module (2) through a fourth pipeline (54).
4. The water purification device according to claim 1 or 3, wherein the secondary filtration module (2) is at least one of a nanofiltration membrane filter element or a reverse osmosis membrane filter element.
5. The water purifying device according to claim 1 or 3, wherein a third liquid level sensor (33) and a water quality monitoring sensor (35) are arranged in the water storage barrel (3), the third liquid level sensor (33) is lower than the second liquid level sensor (32) and is close to the bottom wall of the water storage barrel, a drain pipe (56) is externally connected to the water storage barrel (3), a fourth electromagnetic valve (66) electrically connected with the third liquid level sensor (33) is arranged on the drain pipe (56), and the fourth electromagnetic valve (66) is further electrically connected with the water quality monitoring sensor (35).
6. The water purification apparatus of claim 5, wherein the water quality monitoring sensor (35) is at least one of a TDS monitoring head or an organic matter sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611612.2A CN110606582B (en) | 2018-06-14 | 2018-06-14 | Water purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611612.2A CN110606582B (en) | 2018-06-14 | 2018-06-14 | Water purifying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110606582A true CN110606582A (en) | 2019-12-24 |
| CN110606582B CN110606582B (en) | 2024-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810611612.2A Active CN110606582B (en) | 2018-06-14 | 2018-06-14 | Water purifying device |
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| Country | Link |
|---|---|
| CN (1) | CN110606582B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010149030A (en) * | 2008-12-24 | 2010-07-08 | Duskin Co Ltd | Ro water purifier |
| CN204185315U (en) * | 2014-07-23 | 2015-03-04 | 安徽汇淼环保设备有限公司 | A kind of reverse osmosis is without waste water water cleaning systems |
| CN104973699A (en) * | 2015-06-10 | 2015-10-14 | 芜湖市晨曦新型建材科技有限公司 | Reverse osmosis water purifier |
| CN105692797A (en) * | 2016-04-21 | 2016-06-22 | 广州悦活环保科技有限公司 | Water purifying system and control method thereof |
| CN107746134A (en) * | 2017-12-05 | 2018-03-02 | 江苏全给净化科技有限公司 | A kind of full room comprehensive water treatment system of intelligent control and method for treating water |
| CN208732760U (en) * | 2018-06-14 | 2019-04-12 | 宁波方太厨具有限公司 | Purifier |
-
2018
- 2018-06-14 CN CN201810611612.2A patent/CN110606582B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010149030A (en) * | 2008-12-24 | 2010-07-08 | Duskin Co Ltd | Ro water purifier |
| CN204185315U (en) * | 2014-07-23 | 2015-03-04 | 安徽汇淼环保设备有限公司 | A kind of reverse osmosis is without waste water water cleaning systems |
| CN104973699A (en) * | 2015-06-10 | 2015-10-14 | 芜湖市晨曦新型建材科技有限公司 | Reverse osmosis water purifier |
| CN105692797A (en) * | 2016-04-21 | 2016-06-22 | 广州悦活环保科技有限公司 | Water purifying system and control method thereof |
| CN107746134A (en) * | 2017-12-05 | 2018-03-02 | 江苏全给净化科技有限公司 | A kind of full room comprehensive water treatment system of intelligent control and method for treating water |
| CN208732760U (en) * | 2018-06-14 | 2019-04-12 | 宁波方太厨具有限公司 | Purifier |
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| Publication number | Publication date |
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| CN110606582B (en) | 2024-04-16 |
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