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CN-224226750-U - Filter element and water purifier

CN224226750UCN 224226750 UCN224226750 UCN 224226750UCN-224226750-U

Abstract

The utility model belongs to the technical field of water purifying equipment, and discloses a filter element and a water purifier. The filter assembly of the filter element comprises a primary filter unit and a secondary filter unit. The filter element has the advantages that the primary filter unit and the secondary filter unit are integrated in the same filter flask, the integral composite design is utilized to replace the multistage separation design, the integration level of the filter element is improved, the volume of the filter element is reduced, the primary filter unit adopted by the filter element can separate raw water to form first water flow with higher magnesium ion content and second water flow with lower magnesium ion content, the first water flow flows to the secondary filter unit, concentrated water and purified water are formed after the first water flow is filtered and separated by the secondary filter unit, and the TDS value of the first water flow is reduced by the secondary filter unit, so that the magnesium ion content in the purified water is adjusted to a proper range. Compared with the water purification provided by the existing water purification filter element, the magnesium ion content in the water purification generated by the utility model is improved, and the manner of increasing the magnesium ion content is safe and reliable.

Inventors

  • ZHAO YONGFENG
  • LI JIAN
  • LV XINXIN
  • WU TONG

Assignees

  • 青岛海尔施特劳斯科技有限公司
  • 青岛海尔施特劳斯水设备有限公司
  • 海尔智家股份有限公司

Dates

Publication Date
20260512
Application Date
20250324

Claims (10)

  1. 1. A filter cartridge, comprising: A filter flask (100), wherein a water inlet (101) is arranged on the filter flask (100); The filter assembly (300) is arranged in the filter flask (100), the filter assembly (300) comprises a primary filter unit (310) and a secondary filter unit (320), the water inlet (101) is communicated with the water inlet end of the primary filter unit (310), and a first water flow passage is formed between the primary filter unit (310) and the secondary filter unit (320); The primary filtering unit (310) is used for splitting raw water and forming a first water flow and a second water flow, the magnesium ion content in the first water flow is higher than that in the second water flow, the first water flow enters the secondary filtering unit (320) through the first water flow channel, the secondary filtering unit (320) is used for adjusting the TDS value of the first water flow and splitting the first water flow into concentrated water and purified water, and the magnesium ion content in the purified water is lower than that in the first water flow.
  2. 2. The cartridge of claim 1, wherein the primary filtration unit (310) comprises a salt-splitting nanofiltration membrane; And/or the desalination rate of the primary filtration unit (310) to magnesium sulfate is greater than or equal to 85%; And/or the first stage filtration unit (310) has a salt rejection of less than 40% for sodium chloride; And/or the first stage filtration unit (310) has a salt rejection of less than 40% for calcium chloride; and/or the secondary filtration unit (320) comprises a salt separation nanofiltration membrane, a desalination nanofiltration membrane or a reverse osmosis membrane.
  3. 3. The filter cartridge of claim 1, further comprising a center tube assembly (200) disposed within the filter flask (100), the filter assembly (300) being nested outside the center tube assembly (200); A first water outlet flow channel (201) and a second water outlet flow channel (202) are formed in the central tube assembly (200), a first water outlet (102) and a second water outlet (103) are formed on the filter flask (100), a second water outlet flow channel is formed between the first water outlet flow channel (201) and the first stage filtering unit (310), the first water outlet flow channel (201) is communicated with the first water outlet (102), the second water outlet flow channel (202) is communicated with the second water outlet (103), the second water flow is discharged from the first water outlet (102), and the purified water is discharged from the second water outlet (103); Or a first water outlet flow channel (201) is formed in the central tube assembly (200), a first water outlet (102) is formed on the filter flask (100), a second water outlet flow channel is formed between the first water outlet flow channel (201) and the first stage filtering unit (310), the first water outlet flow channel (201) is communicated with the first water outlet (102), and the purified water and the second water flow both flow to the first water outlet flow channel (201) and are discharged from the first water outlet (102) after being mixed; And/or a third water outlet (104) is formed on the filter flask (100), a third water outlet flow channel (203) is formed between the filter assembly (300) and the filter flask (100), the third water outlet flow channel (203) is communicated with the third water outlet (104), and the concentrated water is discharged from the third water outlet (104).
  4. 4. A filter cartridge according to claim 3, wherein the central tube assembly (200) comprises a first central tube (210) and a second central tube (220), the first central tube (210) is sleeved outside the second central tube (220), the first water outlet flow channel (201) is formed between the second central tube (220) and the first central tube (210), the second water outlet flow channel (202) is formed in the second central tube (220), the second central tube (220) comprises a first tube portion located in the first central tube (210) and a second tube portion protruding outside the first central tube (210), the primary filter unit (310) is sleeved outside the first central tube (210), and the secondary filter unit (320) is sleeved outside the second tube portion.
  5. 5. The filter cartridge of claim 3, wherein the center tube assembly (200) comprises a first center tube (210), a second center tube (220) and a third center tube (230), the first center tube (210) is sleeved outside the second center tube (220), the first water outlet flow channel (201) is formed between the second center tube (220) and the first center tube (210), the third center tube (230) is coaxially communicated with the second center tube (220), the second water outlet flow channel (202) is jointly formed in the second center tube (220) and the third center tube (230), the primary filter unit (310) is sleeved outside the first center tube (210), and the secondary filter unit (320) is sleeved outside the third center tube (230).
  6. 6. The filter cartridge of claim 5, further comprising a separator (400), wherein the separator (400) comprises a divider plate (410), a first plug tube (440) and a second plug tube (450) protruding from one side of the divider plate (410), and a third plug tube (460) protruding from the other side of the divider plate (410), wherein the first plug tube (440) is sleeved outside the second plug tube (450), wherein the first plug tube (440) is in plug-in fit with the first central tube (210), wherein the second plug tube (450) is in plug-in fit with the second central tube (220), wherein the third plug tube (460) is in plug-in fit with the third central tube (230), and wherein the first water flow channel comprises at least one first flow through hole (401) provided on the divider plate (410) and located outside the first plug tube (440) away from the second plug tube (450).
  7. 7. The cartridge of claim 1, further comprising a divider (400), the divider (400) being supported between the primary filter unit (310) and the secondary filter unit (320), the first water flow passage comprising at least one first flow aperture (401) provided in the divider (400).
  8. 8. The filter cartridge of claim 7, wherein the separator (400) comprises a partition plate (410), a first installation cavity (402) formed on one side of the partition plate (410), and a second installation cavity (403) formed on the other side of the partition plate (410), the first water flow channel comprises at least one first overflow hole (401) formed in the partition plate (410), the first overflow hole (401) is opposite to the primary filter unit (310) and the secondary filter unit (320), the water outlet end of the primary filter unit (310) is inserted into the first installation cavity (402), and the water inlet end of the secondary filter unit (320) is inserted into the second installation cavity (403).
  9. 9. The filter cartridge of claim 1, further comprising a support member (500), the support member (500) being disposed in the filter flask (100), the support member (500) comprising a support ring plate (510) and a third annular plate (520), the third annular plate (520) being disposed circumferentially of the support ring plate (510) and protruding toward one side of the support ring plate (510), the support ring plate (510) and the third annular plate (520) together forming a third mounting cavity into which the water inlet end of the primary filter unit (310) is inserted.
  10. 10. A water purifier comprising a housing and the cartridge of any one of claims 1-9, the cartridge being disposed within the housing.

Description

Filter element and water purifier Technical Field The utility model relates to the technical field of water purifying equipment, in particular to a filter element and a water purifier. Background Magnesium ion plays an important role in human body, and is mainly reflected in participating in catalytic enzyme reaction, improving muscle energy, promoting calcium absorption, regulating nervous system, protecting cardiovascular system and the like. Regarding the fact that magnesium ions promote the absorption of other ions, magnesium deficiency causes potassium and calcium loss, and if magnesium intake is insufficient, hypomagnesemia is liable to occur, thereby causing hypokalemia and hypocalcemia, whereas hypermagnesemia is rare. The filter element of the existing water purifier has high retention rate of magnesium ions, so that a user drinks water in the water purifier for a long time, and insufficient absorption of magnesium ions can be easily caused. In the prior art, minerals are generally introduced into a water purification system by a manual addition mode, and certain risks exist in terms of sanitation and safety. Disclosure of utility model The utility model aims to provide a filter element and a water purifier, wherein the filter element is high in integration level and effectively improves the magnesium ion content in produced water. To achieve the purpose, the utility model adopts the following technical scheme: The filter element comprises a filter flask, a filter assembly and a filter assembly, wherein the filter flask is provided with a water inlet, the filter assembly is arranged in the filter flask and comprises a first-stage filter unit and a second-stage filter unit, the water inlet is communicated with a water inlet end of the first-stage filter unit, a first water flow channel is formed between the first-stage filter unit and the second-stage filter unit, the first-stage filter unit is used for splitting raw water and forming a first water flow and a second water flow, the magnesium ion content in the first water flow is higher than that in the second water flow, the first water flow enters the second-stage filter unit through the first water flow channel, the second-stage filter unit is used for adjusting the TDS value of the first water flow and splitting the first water flow into concentrated water and purified water, and the magnesium ion content in the purified water is lower than that in the first water flow. Preferably, the primary filter unit comprises a salt separation nanofiltration membrane, and/or the desalination rate of the primary filter unit to magnesium sulfate is greater than or equal to 85%, and/or the desalination rate of the primary filter unit to sodium chloride is less than 40%, and/or the desalination rate of the primary filter unit to calcium chloride is less than 40%, and/or the secondary filter unit comprises a salt separation nanofiltration membrane, a desalination nanofiltration membrane or a reverse osmosis membrane. The filter element is characterized by comprising a filter bottle, a first water outlet and a second water outlet, wherein the filter bottle is provided with a first water outlet and a second water outlet, a first water outlet and a second water outlet are formed in the filter bottle, a second water flow passage is formed between the first stage filtering unit and the first water outlet, the first water outlet is communicated with the first water outlet, the second water outlet is communicated with the second water outlet, the second water flow is discharged from the first water outlet, the purified water is discharged from the second water outlet, or a first water outlet is formed in the filter bottle, a second water flow passage is formed between the first stage filtering unit and the first water outlet, the purified water and the second water flow both flow to the first water outlet and are mixed, and then the first water outlet and/or the third water outlet are/is communicated with the third water outlet, or the third water outlet is/are communicated with the filter bottle, and the third water outlet is/are formed between the filter bottle. Preferably, the central tube assembly extends along a first direction, the primary filtering unit and the secondary filtering unit are arranged at intervals in the first direction, the primary filtering unit is arranged between the secondary filtering unit and the water inlet, or the secondary filtering unit is arranged between the primary filtering unit and the water inlet. Preferably, the central tube assembly comprises a first central tube and a second central tube, the first central tube is sleeved outside the second central tube, a first water outlet flow channel is formed between the second central tube and the first central tube, a second water outlet flow channel is formed in the second central tube, the second central tube comprises a first tube portion located in the first central tube and a second