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CN-224226751-U - Filter core structure and purifier

CN224226751UCN 224226751 UCN224226751 UCN 224226751UCN-224226751-U

Abstract

The utility model belongs to the technical field of water purifying equipment, and discloses a filter element structure and a water purifier. The filter element structure comprises a filter flask, a central tube component and a filter component, wherein the primary filter unit is used for purifying raw water and adjusting a TDS value, and forms purified water and concentrated water, and the purified water flows into the secondary filter unit and is separated to form low-calcium-magnesium-ratio water and high-calcium-magnesium-ratio water. The filter element structure is characterized in that the primary filter unit, the first central tube, the secondary filter unit and the second central tube are sequentially sleeved from outside to inside, so that the filter assembly and the central tube assembly are combined into a whole, the integrated composite design is utilized to replace the multi-stage split design of the filter element, the integration level of the filter element structure is improved, the volume of the filter element structure is reduced, the primary filter unit adopted by the filter element structure is used for purifying raw water and adjusting the TDS value, and the secondary filter unit is used for separating at least part of purified water generated by the primary filter unit to form high-calcium-magnesium ratio water and low-calcium-magnesium ratio water, so that the obtaining mode of the low-calcium-magnesium ratio water is safe and reliable.

Inventors

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

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 structure comprising: A filter flask (100), wherein a water inlet (101) is arranged on the filter flask (100); The central tube assembly (200) is arranged in the filter flask (100), 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), a first water flow passage (211) penetrating through the tube wall is arranged on the first central tube (210), and a second water flow passage (221) penetrating through the tube wall is arranged on the second central tube (220); the filtering assembly (300) is arranged in the filter flask (100), the filtering assembly (300) comprises a primary filtering unit (310) and a secondary filtering unit (320), the primary filtering unit (310) is sleeved outside the first central tube (210), the secondary filtering unit (320) is sleeved between the first central tube (210) and the second central tube (220), and the water inlet end of the primary filtering unit (310) is communicated with the water inlet (101); The primary filter unit (310) is used for purifying raw water and adjusting the TDS value of the raw water, and forming purified water, the purified water can flow to the secondary filter unit (320) through the first water flow passage (211), the secondary filter unit (320) is used for separating at least part of the purified water and forming low-calcium-magnesium-ratio water and high-calcium-magnesium-ratio water, the high-calcium-magnesium-ratio water flows to the second central tube (220) through the second water flow passage (221), and the low-calcium-magnesium-ratio water is discharged from the water outlet end of the secondary filter unit (320).
  2. 2. The filter cartridge structure of claim 1, wherein, The filter bottle (100) is further provided with a first water outlet (102), a second water outlet (103) and a third water outlet (104), the primary filtering unit (310) is further provided with concentrated water, the concentrated water flows to the first water outlet (102), the water outlet end of the secondary filtering unit (320) is communicated with the second water outlet (103), and the water outlet of the second central tube (220) is communicated with the third water outlet (104); Or the top end of the primary filtering unit (310) forms the water inlet end, the bottom end of the primary filtering unit (310) forms the water outlet end, a water inlet flow channel communicated with the water inlet (101) is formed between the outer wall surface of the primary filtering unit (310) and the inner wall surface of the filter flask (100), a first water outlet (102) is further formed in the filter flask (100), and the water outlet end of the primary filtering unit (310) is communicated with the first water outlet (102); Or the top end of the first-stage filtering unit (310) forms a water outlet end, the bottom end of the first-stage filtering unit (310) forms the water inlet end, the filter flask (100) is also provided with a first water outlet (102), a concentrated water outlet flow channel is formed between the outer wall surface of the first-stage filtering unit (310) and the inner wall surface of the filter flask (100), and the concentrated water outlet flow channel is communicated with the water outlet end of the first-stage filtering unit (310) and the first water outlet (102); and/or, a fourth water outlet (105) is further formed in the filter flask (100), a purified water outlet channel is formed between the inner wall surface of the first central tube (210) and the outer wall surface of the secondary filtering unit (320), and the purified water outlet channel is communicated with the fourth water outlet (105), the first water flow channel (211) and the second water flow channel (221).
  3. 3. The cartridge structure of claim 1, wherein the primary filtration unit (310) comprises an RO membrane or a high desalination nanofiltration membrane; and/or, the secondary filtration unit (320) comprises a salt-splitting nanofiltration membrane; And/or the desalination rate of the magnesium sulfate by the two-stage filtering unit (320) is more than or equal to 85%; And/or the desalination rate of the secondary filtration unit (320) to sodium chloride is less than 50%; And/or the desalination rate of the secondary filtration unit (320) to calcium chloride is less than 50%; And/or, the filter assembly (300) further comprises a three-stage filter unit, wherein the three-stage filter unit is used for reducing the TDS value of the low-calcium-magnesium ratio water, and is a desalination nanofiltration membrane or an RO membrane.
  4. 4. The filter element structure according to claim 1, wherein one end of the first central tube (210) is closed, the second central tube (220) is disposed in the first central tube (210), and one end of the second central tube (220) is detachably connected to the closed end of the first central tube (210).
  5. 5. The filter element structure according to claim 1, further comprising a first support member (400), the first support member (400) being disposed in the filter flask (100), the first support member (400) comprising a first support ring plate (410) and a first annular side plate (420), the first annular side plate (420) protruding upward along a circumferential direction of the first support ring plate (410) and forming a first installation cavity (401), a water outlet end of the primary filter unit (310) being inserted into the first installation cavity (401); And/or, the filter element structure further comprises a second supporting piece (500), the second supporting piece (500) is arranged in the filter flask (100), the second supporting piece (500) comprises a second supporting annular plate (510) and a second annular side plate (520), the second annular side plate (520) is upwards protruded along the circumferential direction of the second supporting annular plate (510) to form a second installation cavity (501), and the water outlet end of the secondary filtering unit (320) is inserted into the second installation cavity (501).
  6. 6. The filter element structure according to claim 2, further comprising a total support member (600), wherein the total support member (600) is fixed in the filter flask (100), the total support member (600) is used for supporting the center tube assembly (200) and the filter assembly (300), a first flow passage, a second flow passage, a third flow passage, a fourth flow passage and a fifth flow passage which are mutually independent are arranged on the total support member (600), the first flow passage is communicated with the water inlet (101) and the water inlet flow passage, the second flow passage is communicated with the water outlet end of the primary filter unit (310) and the first water outlet (102), the third flow passage is communicated with the water outlet end of the secondary filter unit (320) and the second water outlet (103), the fourth flow passage is communicated with the water outlet of the second center tube (220) and the third water outlet (104), and the fifth flow passage is communicated with the purified water outlet and the fourth water outlet (105).
  7. 7. The cartridge arrangement of claim 6, wherein the overall support (600) comprises a first tubular portion (610), the first tubular portion (610) being in plug-fit with the water outlet end of the first central tube (210); And/or, the total support (600) comprises a second tubular part (620), and the second tubular part (620) is in plug-in fit with the water outlet end of the second central tube (220); and/or, the overall support (600) comprises a third tubular portion (630), the cartridge structure further comprising a first support (400), the first support (400) being for supporting the primary filtration unit (310), the first support (400) comprising a third annular side plate (430), the third annular side plate (430) being in a plug-in fit with the third tubular portion (630); And/or the total support (600) comprises a fourth tubular portion (640), the cartridge structure further comprising a second support (500), the second support (500) being for supporting the secondary filtration unit (320), the second support (500) comprising a fourth annular side plate (530), the fourth annular side plate (530) being in a plug-in fit with the fourth tubular portion (640); And/or forming a supporting surface in the filter bottle (100), wherein the total support (600) comprises an annular overlap portion (650), and the annular overlap portion (650) is overlapped on the supporting surface.
  8. 8. The cartridge arrangement of claim 7, wherein the first flow passage includes a first water passing hole (601) disposed through the annular overlap (650); The general support (600) further comprises a protruding connecting portion (660) arranged below the annular overlap joint portion (650), the first runner further comprises a second water passing hole (602) arranged on the protruding connecting portion (660), a water passing gap arranged on the side of the protruding connecting portion (660) and between the lower portion of the annular overlap joint portion (650) and the inner wall of the filter flask (100), and the first water passing hole (601), the water passing gap, the second water passing hole (602) and the water inlet (101) are sequentially communicated.
  9. 9. The filter cartridge structure according to claim 7, wherein the total support (600) further comprises a first annular portion disposed between the first tubular portion (610) and the third tubular portion (630), the second flow passage comprises a third water passing hole (603) disposed on the first annular portion, the total support (600) further comprises a protruding connecting portion (660) disposed below the annular overlap portion (650), the second flow passage further comprises a fourth water passing hole (604) disposed on the protruding connecting portion (660), and the third water passing hole (603), the fourth water passing hole (604) and the first water outlet (102) are sequentially communicated; And/or, the total support (600) further comprises a second annular portion arranged between the first tubular portion (610) and the fourth tubular portion (640), the third flow passage comprises a fifth water passing hole (605) arranged on the second annular portion, and the fifth water passing hole (605) is communicated with the second water outlet (103); And/or, the total support (600) further comprises a third annular portion arranged between the second tubular portion (620) and the fourth tubular portion (640), the fifth flow passage comprises a sixth water passing hole (606) arranged on the third annular portion, and the sixth water passing hole (606) is communicated with the fourth water outlet (105); And/or, the total support (600) further comprises a fourth annular part arranged in the second tubular part (620), a seventh water passing hole (607) is formed by surrounding the fourth annular part, and the seventh water passing hole (607) is communicated with the third water outlet (104).
  10. 10. A water purifier comprising a housing and the cartridge structure of any one of claims 1-9, the cartridge structure being disposed within the housing.

Description

Filter core structure and purifier Technical Field The utility model relates to the technical field of water purifying equipment, in particular to a filter element structure 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. In terms of magnesium ions promoting the absorption of other ions, magnesium deficiency can lead to potassium and calcium loss, and if magnesium intake is insufficient, hypomagnesemia is easy to cause, thus hypokalemia and hypocalcemia, while hypermagnesemia is rare. The filter element structure of the existing water purifier has high retention rate of magnesium ions and low retention rate of calcium ions, so that the content of calcium and magnesium in the final produced water is high, and a user can drink water in the water purifier for a long time to easily cause insufficient absorption of magnesium ions. In the prior art, minerals are generally introduced into a water purification system by a manual addition mode to increase the content of magnesium ions so as to reduce the ratio of calcium to magnesium, but the mode for reducing the ratio of calcium to magnesium has a certain risk in terms of sanitation and safety. Disclosure of utility model The utility model aims to provide a filter element structure and a water purifier, wherein the filter element structure is high in integration level, can generate purified water with low calcium-magnesium ratio according to the requirements of users, and is safe and reliable in a manner of reducing the calcium-magnesium ratio. To achieve the purpose, the utility model adopts the following technical scheme: A filter element structure comprises a filter flask, a central tube assembly, a filter assembly and a first filtering unit, wherein the filter flask is provided with a water inlet, the central tube assembly is arranged in the filter flask and comprises a first central tube and a second central tube, the first central tube is sleeved outside the second central tube, a first water passing flow passage penetrating through the wall of the tube is arranged on the first central tube, a second water passing flow passage penetrating through the wall of the tube is arranged on the second central tube, the filter assembly is arranged in the filter flask and comprises a first filtering unit and a second filtering unit, the first filtering unit is sleeved outside the first central tube, the second filtering unit is sleeved between the first central tube and the second central tube, the water inlet end of the first filtering unit is communicated with the water inlet, the first filtering unit is used for purifying raw water and an adjusted TDS value and forming purified water, the purified water can flow through the first water passing flow passage to the second filtering unit, the second filtering unit is used for separating at least part of the purified water and forming low calcium-magnesium water and high calcium-magnesium water and the second water passing through the first water passing through the water passing flow passage and the second water passing through the second filtering unit is discharged from the second central tube. Preferably, the filter flask is further provided with a first water outlet, a second water outlet and a third water outlet, the first stage filter unit is further provided with concentrated water, the concentrated water flows to the first water outlet, the water outlet end of the second stage filter unit is communicated with the second water outlet, the water outlet end of the second central tube is communicated with the third water outlet, or the top end of the first stage filter unit is provided with the water inlet end, the bottom end of the first stage filter unit is provided with the water outlet end, a water inlet channel communicated with the water inlet is formed between the outer wall surface of the first stage filter unit and the inner wall surface of the filter flask, the filter flask is further provided with the first water outlet, the water outlet end of the first stage filter unit is communicated with the first water outlet, or the top end of the first stage filter unit is provided with the water inlet end, the filter flask is further provided with the first water outlet, a concentrated water outlet channel is formed between the outer wall surface of the first stage filter unit and the inner wall surface of the filter flask, the concentrated water outlet channel is communicated with the first water outlet end of the first stage filter unit, or the water outlet channel is further provided with the water outlet channel. Preferably, the first-stage filtering unit comprises an RO membrane or a high desalination nanofiltration membrane, and/or the second-stage filtering unit comprises