A filter cartridge assembly and a water purifier

Abstract

This utility model relates to the field of water purification equipment technology. It discloses a filter element assembly and a water purifier. The filter element assembly includes: a housing with an inlet, a pure water intake port, and a concentrated water port; a filtration channel formed within the housing; the inlet, pure water intake port, and concentrated water port communicating with the filtration channel; a filter element disposed within the housing; and an end cap disposed within the housing, comprising an outlet end and a filter end. The outlet end is connected to and communicates with the pure water intake port, and the filter end abuts against the end face of the filter element. The end cap and the filter element cooperate to divide the filtration channel into an inlet side communicating with the inlet port and an outlet side communicating with the pure water intake port. By interconnecting the pure water intake port and the concentrated water port in the housing, two types of filter elements—one inlet with two outlets and one inlet with one outlet—can be used interchangeably in the water system while maintaining consistency in the filter element, housing, and end cap, thus reducing overall costs.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a filter element assembly and a water purifier. Background Technology

[0002] Water purification equipment filter cartridges mainly fall into two categories: one with one inlet and two outlets, where the outlet is for concentrated water and pure water (e.g., reverse osmosis filter cartridges); the other with one inlet and one outlet (e.g., PPC filter cartridges or ultrafiltration filter cartridges). These two types of filter cartridges have significantly different structures, making them difficult to integrate and resulting in higher overall costs. Utility Model Content

[0003] The present invention aims to improve at least one technical problem in the prior art.

[0004] This utility model provides a filter element assembly, including:

[0005] The outer shell has a water inlet, a pure water intake port and a concentrated water port. A filter channel is formed inside the outer shell. The water inlet, the pure water intake port and the concentrated water port are respectively connected to the filter channel. The water inlet is connected to the concentrated water port.

[0006] The filter element is disposed inside the housing;

[0007] An end cap is disposed inside the outer casing. The end cap includes a water outlet end and a filter end. The water outlet end is connected to and communicates with the pure water intake hole. The filter end abuts against the end face of the filter element. The end cap and the filter element cooperate to divide the filter channel into an inlet side that communicates with the water inlet hole and a filter outlet side that communicates with the pure water intake hole.

[0008] As a sub-solution of the above technical solution, the filter element assembly further includes a concentrate plug, which seals the concentrate hole.

[0009] As some sub-solutions of the above technical solution, the outer shell includes a base and a filter cartridge. The base and one end of the filter cartridge are sealed together to form the outer shell. The water inlet, pure water intake, and concentrated water intake are all opened on the base. The filter element and the end cap are both located inside the filter cartridge.

[0010] As some sub-solutions of the above technical solution, the base is detachably connected to the filter cartridge, the filter cartridge assembly also includes a pure water leak-proof spring and a pure water leak-proof plug, the water outlet end includes a pure water filter outlet hole, the filter channel is connected to the pure water intake hole through the pure water filter outlet hole, a pad is provided in the pure water filter outlet hole, the pure water leak-proof plug is provided in the pure water filter outlet hole and is driven by the pure water leak-proof spring to move toward the pure water intake hole;

[0011] The inner wall of the pure water intake hole is provided with a limiting bone extending along the axial direction. The limiting bone abuts against the pure water leak-proof plug to limit the pure water intake hole so that it remains open.

[0012] A pure water sealing surface is provided on the side of the water outlet end away from the pure water filter hole. The pure water sealing surface is used to cooperate with the pure water anti-leak plug to seal the pure water filter hole.

[0013] As some sub-solutions of the above technical solution, the filter element assembly also includes a valve core, which is located inside the filter element barrel and is sleeved outside the water outlet end. A concentrate channel is formed between the inner wall of the valve core and the water outlet end, and the filter channel is connected to the concentrate hole through the concentrate channel.

[0014] One end of the valve core abuts against the base to keep the concentrate passage open;

[0015] The outer wall of the valve core is provided with a concentrated water sealing surface, and the outer wall of the outlet end is provided with a concentrated water leak-proof sealing ring for cooperating with the concentrated water sealing surface.

[0016] The filter element assembly includes a self-locking spring, which is disposed between the valve core and the water outlet end, and is used to drive the concentrate sealing surface to abut against the concentrate sealing ring to close the concentrate channel.

[0017] As some sub-solutions of the above technical solution, a water inlet channel is formed between the inner wall of the filter cartridge and the outer wall of the valve core. The water inlet hole is connected to the filter channel through the water inlet channel. The inner wall of the filter cartridge is provided with a first water inlet sealing surface, and the outer wall of the valve core is provided with a first water inlet sealing ring. The first water inlet sealing ring is used to cooperate with the first water inlet sealing surface to seal the water inlet hole.

[0018] As some sub-solutions of the above technical solution, the inner wall of the filter cartridge is further provided with a second water inlet sealing surface, and the outer wall of the valve core is provided with a second water inlet sealing ring. The second water inlet sealing ring is used to cooperate with the second water inlet sealing surface to seal the water inlet hole.

[0019] As some sub-solutions of the above technical solutions, the inner side of the filter cartridge is provided with a first protrusion, and the side of the first protrusion adjacent to the valve core is provided with an oblique angle. The surface of the oblique angle is the second water inlet sealing surface. The surface of the first protrusion facing the end cap and connected to the oblique angle is the first water inlet sealing surface. The valve core is provided with a first water inlet sealing groove and a second water inlet sealing groove. The first water inlet sealing ring includes a fixing part that is inserted into the first water inlet sealing groove and a sealing part that extends toward the first water inlet sealing surface after being bent from one end of the fixing part. The second water inlet sealing ring is disposed in the second water inlet sealing groove.

[0020] As some sub-solutions of the above technical solution, a positioning rib is provided on the outer wall of the water outlet end, the valve core is sleeved on the positioning rib and sealed to the positioning rib, a second boss is provided on the outer side of the water outlet end, and the self-locking spring is located between the positioning rib and the second boss.

[0021] The beneficial effects of this utility model filter element assembly are: by connecting the pure water intake hole and the concentrated water hole in the shell to each other, the two types of filter element assemblies, one inlet and two outlets and one inlet and one outlet, can be used interchangeably in the water circuit system while maintaining the basic premise of consistency in the filter element, shell and end cap, thereby reducing the overall cost.

[0022] This utility model also provides a water purifier, including a filter element assembly as described in any of the technical solutions.

[0023] Since the water purifier includes a filter element assembly as described in any of the above technical solutions, it also has corresponding beneficial effects. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a cross-sectional view of a filter element assembly in its assembled state with a base.

[0026] Figure 2 This is a partial cross-sectional view of a filter element assembly and its base in an assembled state.

[0027] Figure 3 This is a cross-sectional view of a filter cartridge assembly with the base removed.

[0028] In the attached image:

[0029] 1-Outer shell; 101-Filter channel; 102-Concentrate channel; 103-Water inlet channel; 11-Base; 111-Water inlet hole; 112-Pure water inlet hole; 1121-Limiting rib; 113-Concentrate hole; 12-Filter cartridge canister; 121-First boss; 1211-First water inlet sealing surface; 1212-Second water inlet sealing surface;

[0030] 2-Filter element;

[0031] 3-End cap; 31-Outlet end; 311-Pure water filter outlet; 312-Push pad; 313-Pure water sealing surface; 32-Filter end; 33-Second boss;

[0032] 41 - Pure water leak-proof spring; 42 - Pure water leak-proof plug;

[0033] 5-Valve core; 51-Concentrate sealing surface;

[0034] 6-Concentrate leak-proof sealing ring;

[0035] 7-Self-locking spring;

[0036] 81 - First water inlet sealing ring; 82 - Second water inlet sealing ring. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] The following is combined with Figures 1 to 3 The embodiments of this utility model are described below.

[0039] This embodiment relates to a filter element assembly, most of which is compatible with both one-inlet-two-outlet and one-inlet-one-outlet filter element assemblies.

[0040] A filter element assembly in this embodiment includes:

[0041] The outer shell 1 has a water inlet 111, a pure water intake 112 and a concentrated water intake 113. A filter channel 101 is formed inside the outer shell 1. The water inlet 111, the pure water intake 112 and the concentrated water intake 113 are respectively connected to the filter channel 101. The water inlet 111 is connected to the concentrated water intake 113.

[0042] Filter element 2 is disposed inside the outer casing 1;

[0043] End cap 3 is disposed inside the outer casing 1. End cap 3 includes a water outlet end 31 and a filter end 32. The water outlet end 31 is connected to and communicates with the pure water intake hole 112. The filter end 32 abuts against the end face of the filter element 2. The end cap 3 and the filter element 2 cooperate to divide the filter channel 101 into a water inlet side that communicates with the water inlet hole 111 and a filter outlet side that communicates with the pure water intake hole 112.

[0044] By connecting the pure water intake hole 112 and the concentrated water intake hole 113 in the outer shell 1, the two types of filter cartridges, one inlet and two outlets, and one inlet and one outlet, can be used interchangeably in the water circuit system while maintaining the basic premise that the filter element 2, the outer shell 1 and the end cap 3 are consistent, thereby reducing the overall cost.

[0045] When this filter element assembly is used in a reverse osmosis filter element with one inlet and two outlets, only one part needs to be installed inside the filter element assembly to block the water inlet hole 111 and the concentrate hole 113, thus forming a one-inlet-two-outlet configuration. It has good compatibility and low modification cost.

[0046] When using this filter cartridge assembly, it is usually necessary to seal the concentrate hole 113. In this embodiment, the filter cartridge assembly also includes a concentrate plug, which seals the concentrate hole 113. By sealing the concentrate hole 113, it can be ensured that water entering through the inlet hole 111 will not leak out from the concentrate hole 113.

[0047] The outer casing 1 includes a base 11 and a filter cartridge 12. The base 11 and one end of the filter cartridge 12 are sealed together to form the outer casing 1. The water inlet 111, the pure water intake 112, and the concentrate 113 are all provided on the base 11. The filter element 2 and the end cap 3 are both located inside the filter cartridge 12. The outer casing 1 is divided into a base 11 and a filter cartridge 12, which simplifies the manufacturing process. At the same time, the filter cartridge 12 can be designed as a detachable structure from the base 11 so that the filter cartridge 12 can be replaced.

[0048] The base 11 is detachably connected to the filter cartridge 12. When the filter cartridge assembly is separated from the base 11, the water inside the filter cartridge assembly may leak through the water inlet 111, the pure water inlet, and / or the concentrated water inlet 113. Therefore, the filter cartridge assembly in this embodiment has been designed accordingly.

[0049] Specifically, the filter element assembly also includes a pure water leak-proof spring 41 and a pure water leak-proof plug 42. The water outlet end 31 includes a pure water filter outlet hole 311. The filter channel 101 is connected to the pure water intake hole 112 through the pure water filter outlet hole 311. A pad 312 is provided inside the pure water filter outlet hole 311. The pure water leak-proof plug 42 is disposed inside the pure water filter outlet hole 311 and is driven by the pure water leak-proof spring 41 to move toward the pure water intake hole 112.

[0050] The inner wall of the pure water intake hole 112 is provided with a limiting bone 1121 extending along the axial direction. The limiting bone 1121 abuts against the pure water leak-proof plug 42 to limit the pure water intake hole 112 so that it remains open.

[0051] The water outlet end 31 is provided with a pure water sealing surface 313 on the side away from the pure water filter hole 311. The pure water sealing surface 313 is used to cooperate with the pure water anti-leak plug 42 to seal the pure water filter hole 311.

[0052] When the base 11 and filter cartridge 12 are assembled, i.e., during normal water intake, the limiting rib 1121 axially limits and fixes the position of the pure water leak-proof plug 42, ensuring that the pure water leak-proof plug 42 can stably detach from the sealing surface and ensuring smooth pure water intake. After the filter cartridge 12 is removed from the base 11, through the cooperation of the pure water leak-proof spring 41 and the pure water leak-proof plug 42, when the pure water leak-proof plug 42 is not restricted by the limiting rib 1121, the pure water leak-proof plug 42 automatically presses against the pure water sealing surface 313 to prevent water from leaking from the pure water hole.

[0053] Furthermore, the filter element assembly also includes a valve core 5, which is located inside the filter element barrel 12. The valve core 5 is sleeved outside the water outlet end 31. A concentrate channel 102 is formed between the inner wall of the valve core 5 and the water outlet end 31. The filter channel 101 communicates with the concentrate hole 113 through the concentrate channel 102. One end of the valve core 5 abuts against the base 11 to keep the concentrate channel 102 open. The outer wall of the valve core 5 is provided with a concentrate sealing surface 51. The outer wall of the water outlet end 31 is provided with a concentrate leak-proof sealing ring 6 for cooperating with the concentrate sealing surface 51. The filter element assembly includes a self-locking spring 7, which is disposed between the valve core 5 and the water outlet end 31 to drive the concentrate sealing surface 51 to abut against the concentrate sealing ring to close the concentrate channel 102.

[0054] When the filter assembly is in operation, the valve core 5 abuts against the base 11, keeping the concentrate channel 102 open to ensure normal concentrate discharge. When the filter assembly is removed from the base 11, the elastic pressure generated by the self-locking spring 7 drives the valve core 5 to move axially, causing the concentrate sealing surface 51 on the outer wall of the valve core 5 to fit tightly against the concentrate leak-proof sealing ring 6 on the outer wall of the outlet end 31, thereby sealing the concentrate channel 102 and preventing water leakage from the concentrate hole 113. This structure maintains the concentrate channel 102 in an open state through the stable support of the valve core 5 by the base 11 during normal operation, ensuring continuous concentrate discharge to maintain filtration efficiency. Simultaneously, in the shutdown state, the pre-tightening force of the self-locking spring 7 forms an automatic seal, making operation convenient.

[0055] Furthermore, a water inlet channel 103 is formed between the inner wall of the filter cartridge 12 and the outer wall of the valve core 5. The water inlet hole 111 communicates with the filter channel 101 through the water inlet channel 103. The inner wall of the filter cartridge 12 is provided with a first water inlet sealing surface 1211, and the outer wall of the valve core 5 is provided with a first water inlet sealing ring 81. The first water inlet sealing ring 81 is used to cooperate with the first water inlet sealing surface 1211 to seal the water inlet hole 111. In the working state, the valve core 5 abuts against the base 11 to keep the water inlet channel 103 open, ensuring that the filter cartridge assembly can take in water normally. When the filter cartridge assembly is removed from the base 11, the elastic pressure generated by the self-locking spring 7 drives the valve core 5 to move axially. The first water inlet sealing ring 81 on the valve core 5 then abuts against the first sealing surface to seal the water inlet channel 103, preventing water from leaking from the water inlet hole 111, making operation convenient.

[0056] The inner wall of the filter cartridge 12 is also provided with a second water inlet sealing surface 1212, and the outer wall of the valve core 5 is provided with a second water inlet sealing ring 82. The second water inlet sealing ring 82 is used to cooperate with the second water inlet sealing surface 1212 to seal the water inlet hole 111. In the working state, the valve core 5 abuts against the base 11 to keep the water inlet channel 103 open, ensuring that the filter cartridge can take in water normally. When the filter cartridge is removed from the base 11, the elastic pressure generated by the self-locking spring 7 drives the valve core 5 to move axially, and the second water inlet sealing ring 82 on the valve core 5 abuts against the second water inlet sealing surface 1212 to seal the water inlet channel 103, preventing water from leaking from the water inlet hole 111, making operation convenient. In addition, the double sealing design of the first water inlet sealing ring 81 and the second water inlet sealing ring 82 at the water inlet channel 103 can effectively improve the reliability of the water inlet hole 111 sealing and better prevent leakage.

[0057] The filter cartridge 12 has a first protrusion 121 on its inner side. The first protrusion 121 has an oblique angle on the side adjacent to the valve core 5. The surface of the oblique angle is the second water inlet sealing surface 1212. The surface of the first protrusion 121 facing the end cap 3 and connected to the oblique angle is the first water inlet sealing surface 1211. The valve core 5 has a first water inlet sealing groove and a second water inlet sealing groove. The first water inlet sealing ring 81 includes a fixing part that is inserted into the first water inlet sealing groove and a sealing part that extends toward the first water inlet sealing surface 1211 after being bent from one end of the fixing part. The second water inlet sealing ring 82 is disposed in the second water inlet sealing groove.

[0058] The first water inlet sealing surface 1211 and the second water inlet sealing surface 1212 are respectively the surface of the first boss 121 facing the end cap 3 and connected to the bevel, and the surface of the bevel, which can effectively seal the water inlet hole 111. The first water inlet sealing ring 81 is designed to include a bent and extended sealing part. This sealing part has a strong deformation capacity when under pressure. When a double seal is formed, it can ensure that both the first water inlet sealing ring 81 and the second water inlet sealing ring 82 have a large interference fit, ensuring the sealing performance of the double seal.

[0059] The outer wall of the water outlet end 31 is provided with a positioning rib. The valve core 5 is sleeved on the positioning rib and sealed to the positioning rib. A second boss 33 is provided on the outer side of the water outlet end 31. The self-locking spring 7 is located between the positioning rib and the second boss 33. By setting the positioning rib, the valve core 5 is positioned for sleeve connection. At the same time, it also cooperates with the second boss 33 to provide a placement position for the self-locking spring 7. The structure is ingeniously designed and effectively simplifies the structural design of the self-locking function.

[0060] This utility model also provides a water purifier, including a filter element assembly as described in any one of the claims. When the water purifier needs to be equipped with two types of filter elements, namely one inlet and two outlets or one inlet and one outlet, the filter element assembly of this embodiment only requires minor modifications to enable the filter element assembly to be used in both one inlet and two outlet scenarios, resulting in a lower overall cost.

[0061] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

[0062] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

Claims

1. A filter cartridge assembly characterized by: include: The outer shell (1) is provided with a water inlet (111), a pure water intake hole (112) and a concentrated water hole (113). A filter channel (101) is formed inside the outer shell (1). The water inlet (111), the pure water intake hole (112) and the concentrated water hole (113) are respectively connected to the filter channel (101). The water inlet (111) is connected to the concentrated water hole (113). A filter element (2) is disposed inside the outer casing (1); An end cap (3) is provided inside the outer shell (1). The end cap (3) includes a water outlet end (31) and a filter end (32). The water outlet end (31) is connected to and communicates with the pure water intake hole (112). The filter end (32) abuts against the end face of the filter element (2). The end cap (3) and the filter element (2) cooperate to divide the filter channel (101) into an inlet side that communicates with the water inlet hole (111) and a filter outlet side that communicates with the pure water intake hole (112).

2. A filter cartridge assembly according to claim 1 wherein: The filter assembly also includes a concentrate plug that seals the concentrate hole (113).

3. A filter cartridge assembly according to claim 1 wherein: The outer shell (1) includes a base (11) and a filter cartridge (12). The base (11) and one end of the filter cartridge (12) are sealed together to form the outer shell (1). The water inlet (111), the pure water intake hole (112) and the concentrate hole (113) are all opened on the base (11). The filter element (2) and the end cap (3) are both located inside the filter cartridge (12).

4. A filter cartridge assembly according to claim 3 wherein: The base (11) is detachably connected to the filter cartridge (12). The filter cartridge assembly also includes a pure water leak-proof spring (41) and a pure water leak-proof plug (42). The water outlet end (31) includes a pure water filter outlet hole (311). The filter channel (101) is connected to the pure water intake hole (112) through the pure water filter outlet hole (311). A pad (312) is provided inside the pure water filter outlet hole (311). The pure water leak-proof plug (42) is located inside the pure water filter outlet hole (311) and is driven by the pure water leak-proof spring (41) to move toward the pure water intake hole (112). The inner wall of the pure water intake hole (112) is provided with a limiting bone (1121) extending along the axial direction. The limiting bone (1121) abuts against the pure water leak-proof plug (42) to limit the pure water intake hole (112) so that it remains open. The water outlet end (31) is provided with a pure water sealing surface (313) on the side away from the pure water filter hole (311). The pure water sealing surface (313) is used to cooperate with the pure water anti-leak plug (42) to seal the pure water filter hole (311).

5. A filter cartridge assembly according to claim 4 wherein: The filter element assembly also includes a valve core (5), which is located inside the filter element barrel (12). The valve core (5) is sleeved outside the water outlet end (31). A concentrate channel (102) is formed between the inner wall of the valve core (5) and the water outlet end (31). The filter channel (101) is connected to the concentrate hole (113) through the concentrate channel (102). One end of the valve core (5) abuts against the base (11) to keep the concentrate channel (102) open; The outer wall of the valve core (5) is provided with a concentrated water sealing surface (51), and the outer wall of the outlet end (31) is provided with a concentrated water leak-proof sealing ring (6) for cooperating with the concentrated water sealing surface (51). The filter element assembly includes a self-locking spring (7), which is located between the valve core (5) and the water outlet end (31) to drive the concentrate sealing surface (51) to abut against the concentrate sealing ring to close the concentrate channel (102).

6. A filter cartridge assembly according to claim 5 wherein: A water inlet channel (103) is formed between the inner wall of the filter cartridge (12) and the outer wall of the valve core (5). The water inlet hole (111) is connected to the filter channel (101) through the water inlet channel (103). The inner wall of the filter cartridge (12) is provided with a first water inlet sealing surface (1211). The outer wall of the valve core (5) is provided with a first water inlet sealing ring (81). The first water inlet sealing ring (81) is used to cooperate with the first water inlet sealing surface (1211) to seal the water inlet hole (111).

7. A filter cartridge assembly according to claim 6 wherein: The inner wall of the filter cartridge (12) is also provided with a second water inlet sealing surface (1212), and the outer wall of the valve core (5) is provided with a second water inlet sealing ring (82). The second water inlet sealing ring (82) is used to cooperate with the second water inlet sealing surface (1212) to seal the water inlet hole (111).

8. A filter cartridge assembly according to claim 7 wherein: The filter cartridge (12) has a first protrusion (121) on its inner side. The first protrusion (121) has an oblique angle on the side adjacent to the valve core (5). The surface of the oblique angle is the second water inlet sealing surface (1212). The surface of the first protrusion (121) facing the end cap (3) and connected to the oblique angle is the first water inlet sealing surface (1211). The valve core (5) has a first water inlet sealing groove and a second water inlet sealing groove. The first water inlet sealing ring (81) includes a fixing part that is inserted into the first water inlet sealing groove and a sealing part that extends toward the first water inlet sealing surface (1211) after being bent from one end of the fixing part. The second water inlet sealing ring (82) is located in the second water inlet sealing groove.

9. A filter cartridge assembly according to claim 5 wherein: The outer wall of the water outlet end (31) is provided with a positioning rib, the valve core (5) is sleeved on the positioning rib and sealed to the positioning rib, the outer side of the water outlet end (31) is provided with a second boss (33), and the self-locking spring (7) is located between the positioning rib and the second boss (33).

10. A water purifier characterized by comprising: Includes a filter element assembly as described in any one of claims 1-9.

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