Composite filter element and water purifier having the same

Abstract

The present invention provides a composite filter element and a water purifier having the same. The composite filter element includes a first shell and an inner cylinder assembly disposed in the first shell, the inner cylinder assembly including: an inner cylinder structure having an installation cavity; a first filter structure disposed in the installation cavity, the first filter structure including a filter portion; a second filter structure disposed in the installation cavity, the second filter structure including a filter component, at least part of the second filter structure being located above the first filter structure; the first filter structure also includes a first support member, the second filter structure also includes a positioning component, the filter component is connected to the positioning component, and the positioning component is connected to the first support member, so that the first filter structure supports the second filter structure through the first support member. The present invention effectively solves the problem in the prior art that the overall structural strength of the filter element is low, which affects the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a composite filter element and a water purifier having the same. Background Art

[0002] Currently, water purifiers on the market usually use filter cartridges filled with a single filter material, resulting in poor filtration effects and failing to meet user needs. In the prior art, in order to achieve the filtration effects of multiple filter materials, multiple filter materials are connected in series for filtration, and each filter material is fixed on a fixed base.

[0003] However, due to the large volume of the filter materials connected in series, the overall structural strength of the filter element cannot be guaranteed, and the filter element structure is easily damaged, affecting the normal use of the filter element and shortening the service life of the filter element. Summary of the Invention

[0004] The main purpose of the present invention is to provide a composite filter element and a water purifier having the same, so as to solve the problem in the prior art that the overall structural strength of the filter element is low and affects the service life.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a composite filter element is provided, comprising a first shell and an inner cylinder assembly arranged in the first shell, the inner cylinder assembly comprising: an inner cylinder structure having an installation cavity; a first filter structure arranged in the installation cavity, the first filter structure comprising a first filter portion; a second filter structure arranged in the installation cavity, the second filter structure comprising a second filter portion, at least part of the second filter structure being located above the first filter structure; wherein the first filter structure further comprises a first support member, the second filter structure further comprises a positioning member, the second filter portion is connected to the positioning member, and the positioning member is connected to the first support member, so that the first filter structure supports the second filter structure through the first support member.

[0006] Furthermore, the positioning component includes a second shell and a second support member, the second filter portion is arranged in the second shell, and the second support member is passed through the second filter portion.

[0007] Furthermore, the side wall of the second shell has a weight-reducing hole, and the inner tube assembly also includes: a first water barrier, which is used to seal the weight-reducing hole; wherein, there are one or more weight-reducing holes, and when there are multiple weight-reducing holes, the multiple weight-reducing holes are arranged at intervals along the circumference of the second shell.

[0008] Furthermore, there are one or more first water barrier members. When there is one first water barrier member, the first water barrier member is wound outside the second shell; when there are multiple weight-reducing holes and multiple first water barrier members, the multiple first water barrier members are arranged in a one-to-one correspondence with the multiple weight-reducing holes.

[0009] Furthermore, the second support member is a rod body, and the height directions of the rod body and the inner cylinder assembly are arranged parallel to each other. The first support member has a first support surface arranged toward the second filtering structure, and the first support surface abuts against the rod body and is arranged perpendicular to each other.

[0010] Furthermore, the second shell has a contact end surface set toward the first filtering structure, the contact end surface and the height direction of the inner cylinder assembly are perpendicular to each other, and the first support member has a second support surface set toward the second filtering structure, the contact end surface and the second support surface are abutted and parallel to each other.

[0011] Furthermore, the inner tube structure includes: a first end cover; a second end cover, which is connected to one end of the first filter structure away from the second filter structure; the composite filter element also includes: a second water barrier, and the first end cover is connected to the second end cover through the second water barrier; wherein the first end cover, the second end cover and the second water barrier surround to form an installation cavity.

[0012] Furthermore, the first water barrier and / or the second water barrier is a water barrier cloth.

[0013] Furthermore, the second support member is a rod body, the first end of the rod body is connected to the first support member, and the second filtering structure also includes: a third end cover, which is arranged at an end of the second shell away from the first filtering structure and has a first opening, and there is a gap between the second end of the rod body and the third end cover, and the gap is connected to the first opening.

[0014] Furthermore, the first end cover has a second opening connected to the installation cavity, and the composite filter element also includes: a mounting head, which is arranged on the third end cover and passes through the second opening to the outside of the inner cylinder structure; the mounting head has a first liquid passage connected to the first opening, and a second liquid passage connected to the installation cavity is formed between the mounting head and the first end cover.

[0015] Furthermore, the first support member has a through hole for the medium to pass through, and the through hole is arranged to avoid the second support member.

[0016] According to another aspect of the present invention, a water purifier is provided, comprising a housing and a composite filter element disposed in the housing; wherein the composite filter element is the composite filter element described above.

[0017] According to the technical solution of the present invention, both the first and second filter structures are disposed within the inner cylinder structure, and the first and second filter structures are arranged along the height of the inner cylinder structure. At least a portion of the second filter structure is positioned above the first filter structure. Media entering the inner cylinder structure first enters the first filter structure, is filtered by the first filter section, then enters the second filter structure, and finally, is filtered by the second filter section before exiting the inner cylinder structure. The second filter section of the second filter structure is connected to a positioning member, thereby enhancing the structural strength of the second filter structure. The positioning member of the second filter structure is connected to the first support member of the first filter structure, and the first filter structure supports the second filter structure via the first support member, thereby pressing the second filter structure against the first filter structure. This connection between the first and second filter structures reduces stress on the sidewalls of the inner cylinder structure, preventing structural damage or deformation. This solves the problem of low overall structural strength in conventional filter elements, which affects their service life. It improves the overall structural strength of the composite filter element and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A cross-sectional view of an inner barrel assembly according to an embodiment of a composite filter element of the present invention is shown;

[0020] Figure 2 Shown Figure 1 An enlarged schematic diagram of point A of the inner cylinder assembly of the composite filter element;

[0021] Figure 3 Shown Figure 1 A cross-sectional view of the inner cylinder assembly of the composite filter element from another angle;

[0022] Figure 4 Shown Figure 1 A schematic diagram of the three-dimensional structure of the second shell of the inner cylinder assembly of the composite filter element; and

[0023] Figure 5 Shown Figure 1 Schematic diagram of the three-dimensional structure of the inner cylinder assembly of the composite filter element after removing the inner cylinder structure.

[0024] The above drawings include the following reference numerals:

[0025] 10. Inner tube structure; 11. Installation cavity; 12. First end cover; 121. Second liquid passage; 13. Second end cover; 21. First filter portion; 22. First support member; 221. First support surface; 222. Second support surface; 223. Through hole; 30. Positioning member; 31. Second shell; 311. Weight reduction hole; 312. Contact end surface; 32. Second filter portion; 33. Second support member; 34. Third end cover; 341. Gap; 40. First water barrier; 50. Second water barrier; 60. Installation head; 61. First liquid passage. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directional words such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0029] In order to solve the problem in the prior art that the overall structural strength of the filter element is low and affects the service life, the present application provides a composite filter element and a water purifier having the same.

[0030] like Figures 1 to 5 As shown, the composite filter element includes a first shell and an inner cylinder assembly arranged in the first shell, and the inner cylinder assembly includes an inner cylinder structure 10, a first filter structure and a second filter structure. The inner cylinder structure 10 has a mounting cavity 11. The first filter structure is arranged in the mounting cavity 11, and the first filter structure includes a first filter portion 21. The second filter structure is arranged in the mounting cavity 11, and the second filter structure includes a second filter portion 32, and at least part of the second filter structure is located above the first filter structure. Among them, the first filter structure also includes a first support member 22, and the second filter structure also includes a positioning component 30, the second filter portion 32 is connected to the positioning component 30, and the positioning component 30 is connected to the first support member 22, so that the first filter structure supports the second filter structure through the first support member 22.

[0031] In this embodiment, both the first and second filter structures are disposed within the inner cylinder structure 10, arranged along the height of the inner cylinder structure 10. At least a portion of the second filter structure is positioned above the first filter structure. Media entering the inner cylinder structure 10 first enters the first filter structure, is filtered by the first filter portion 21, then enters the second filter structure, and finally is filtered by the second filter portion 32 before exiting the inner cylinder structure 10. The second filter portion 32 of the second filter structure is connected to the positioning member 30, thereby enhancing the structural strength of the second filter structure. The positioning member 30 of the second filter structure is connected to the first support member 22 of the first filter structure, and the first filter structure supports the second filter structure via the first support member 22, effectively pressing the second filter structure against the first filter structure. This connection between the first and second filter structures reduces stress on the sidewalls of the inner cylinder structure 10, preventing structural damage or deformation. This addresses the issue of low overall structural strength in conventional filter elements, which impacts service life, and improves the overall structural strength of the composite filter element, extending its service life.

[0032] In this embodiment, the second filter unit 32 is an ultrafiltration membrane. It should be noted that the type of the second filter unit 32 is not limited to this. Optionally, the second filter unit 32 is a fiber filter element or an activated carbon filter element.

[0033] In this embodiment, the positioning component 30 abuts against the first support member 22, and the first support member 22 supports the positioning component 30, so that the first filter structure and the second filter structure are connected by abutting each other, which makes it convenient for staff to disassemble and assemble the first filter structure and the second filter structure, reducing the difficulty of disassembly and assembly.

[0034] It should be noted that the connection method between the positioning component 30 and the first support member 22 is not limited to this. Optionally, the positioning component 30 is connected to the first support member 22 by threading, or by clamping, or by fasteners.

[0035] like Figure 1 and Figure 3 As shown, the positioning component 30 includes a second housing 31 and a second support member 33. The second filter portion 32 is disposed within the second housing 31, and the second support member 33 is disposed within the second filter portion 32. Thus, the second support member 33 and the second housing 31 both abut against the first support member 22, enabling the first support member 22 to support the positioning component 30 and the second filter portion 32, thereby enhancing the structural strength of the second filter structure. Furthermore, this arrangement simplifies the structure of the positioning component 30, making it easier to manufacture and implement, thereby reducing the processing cost of the composite filter element.

[0036] Specifically, the first filter unit 21 comprises an activated carbon filter element, and the first support member 22 is connected to and positioned above the activated carbon filter element. The ultrafiltration membrane is welded to the second housing 31 and the second support member 33, thereby supporting the ultrafiltration membrane via the second support member 33 and the second housing 31, thereby preventing deformation of the ultrafiltration membrane that could affect its filtration performance.

[0037] like Figures 1 to 4 As shown, the side wall of the second shell 31 has a weight-reducing hole 311, and the inner cylinder assembly also includes a first water barrier 40. The first water barrier 40 is used to block the weight-reducing hole 311. Thus, the above-mentioned arrangement of the second shell 31 can reduce the overall weight of the second filter structure, thereby reducing the load-bearing capacity of the first filter structure. At the same time, the above-mentioned arrangement of the first water barrier 40 can prevent the medium from entering the second shell 31 through the weight-reducing hole 311, thereby ensuring that the medium can only enter the second filter structure through the first filter structure, thereby improving the filtering effect of the composite filter element.

[0038] Optionally, there are one or more weight-reducing holes 311. When there are multiple weight-reducing holes 311, the multiple weight-reducing holes 311 are spaced apart along the circumference of the second shell 31. Figure 4 As shown, there are four weight-reducing holes 311 , and the four weight-reducing holes 311 are arranged at intervals along the circumference of the second shell 31 to further reduce the weight of the second shell 31 .

[0039] Optionally, there are one or more first water barrier members 40. When there is only one first water barrier member 40, the first water barrier member 40 is wrapped around the outside of the second shell 31. When there are multiple weight loss holes 311 and multiple first water barrier members 40, the multiple first water barrier members 40 are arranged in a one-to-one correspondence with the multiple weight loss holes 311. In this embodiment, there is only one first water barrier member 40, which is wrapped around the outside of the second shell 31 to block the four weight loss holes 311. Specifically, the first water barrier member 40 is bonded to the second shell 31 to block the four weight loss holes 311.

[0040] In other embodiments not shown in the drawings, there are four first water-blocking members, which are arranged in one-to-one correspondence with the four weight-reducing holes, and each first water-blocking member is bonded to its corresponding weight-reducing hole to seal the weight-reducing hole.

[0041] It should be noted that the number of the weight-reducing holes 311 is not limited thereto and can be adjusted according to weight-reducing requirements. Optionally, the number of the weight-reducing holes 311 is two, three, five, or six.

[0042] It should be noted that the number of the first water blocking members 40 is not limited thereto and can be adjusted according to the number of the weight-reducing holes 311. Optionally, the number of the first water blocking members 40 is two, three, five, or six.

[0043] like Figure 2 As shown, the second support member 33 is a rod, which is arranged parallel to the height of the inner cylinder assembly. The first support member 22 has a first support surface 221 facing the second filter structure. The first support surface 221 abuts the rod and is perpendicular to the rod. In this way, the rod abuts the first support surface 221, supporting the second support member 33 through the first support surface 221. This increases the contact area between the second support member 33 and the first support member 22, increases the supporting force of the first support member 22, ensures that the first support member 22 can support the second filter structure, and improves the support reliability of the first support member 22.

[0044] like Figure 2 As shown, the second housing 31 has a contact end surface 312 facing the first filter structure. The contact end surface 312 is perpendicular to the height direction of the inner cylinder assembly. The first support member 22 has a second support surface 222 facing the second filter structure. The contact end surface 312 abuts against the second support surface 222 and is arranged parallel to each other. In this way, the contact end surface 312 abuts against the second support surface 222 to support the second support member 33 via the first support surface 221. This increases the contact area between the second support member 33 and the first support member 22, increases the supporting force of the first support member 22, ensures that the first support member 22 can support the second filter structure, and improves the support reliability of the first support member 22.

[0045] like Figure 1 and Figure 3 As shown, the inner cylinder structure 10 includes a first end cap 12 and a second end cap 13. The second end cap 13 is connected to an end of the first filter structure away from the second filter structure. The composite filter element also includes a second water barrier 50, and the first end cap 12 is connected to the second end cap 13 via the second water barrier 50. The first end cap 12, the second end cap 13 and the second water barrier 50 surround and form an installation cavity 11. In this way, since the side walls of the inner cylinder structure 10 do not need to bear weight, the above-mentioned setting of the inner cylinder structure 10 can reduce the overall weight of the inner cylinder structure 10 and realize a lightweight design of the composite filter element. At the same time, the above-mentioned setting of the second water barrier 50 can prevent the medium from flowing out of the inner cylinder structure 10 and causing medium leakage, thereby improving the reliability of the composite filter element.

[0046] Optionally, the first water barrier 40 and / or the second water barrier 50 are made of waterproof fabric. In this embodiment, the first water barrier 40 and the second water barrier 50 are both made of waterproof fabric, which reduces the processing cost of the first water barrier 40 and the second water barrier 50 and makes the processing of the first water barrier 40 and the second water barrier 50 easier and more convenient.

[0047] like Figure 1 and Figure 3As shown, the first end of the rod body is connected to the first support member 22, and the second filter structure further includes a third end cap 34. The third end cap 34 is arranged at an end of the second housing 31 away from the first filter structure and has a first opening. A gap 341 is provided between the second end of the rod body and the third end cap 34. The gap 341 is connected to the first opening so that the medium filtered by the ultrafiltration membrane can be discharged to the outside of the second filter structure through the gap 341 and the first opening in sequence. In this way, the above-mentioned arrangement of the rod body ensures that the medium after filtration by the second filter part 32 can pass through the gap 341 and enter the first opening, so as to ensure that the filtered medium can flow to the outside of the composite filter element, further improving the reliability of the composite filter element.

[0048] like Figure 1 、 Figure 3 and Figure 5 As shown, the first end cap 12 has a second opening communicating with the mounting cavity 11. The composite filter element also includes a mounting head 60. The mounting head 60 is mounted on the third end cap 34 and extends through the second opening to the outside of the inner cylinder structure 10. The mounting head 60 has a first liquid passage 61 communicating with the first opening. A second liquid passage 121 communicating with the mounting cavity 11 is formed between the mounting head 60 and the first end cap 12. Thus, one end of the mounting head 60 is connected to the third end cap 34, and the other end of the mounting head 60 is connected to the pipeline to facilitate the transport of filtered media.

[0049] Specifically, the medium in this application is a liquid. The medium enters the mounting cavity 11 through the second liquid passage 121. The medium then enters the first filter section 21, which performs a preliminary filtration on the medium. After filtration, the medium enters the second filter section 32, which performs a secondary filtration on the medium. After filtration, the medium first enters the gap 341. The medium in the gap 341 is then discharged from the composite filter element through the first liquid passage 61, where it filters impurities from the medium.

[0050] It should be noted that the type of medium is not limited thereto. Optionally, the medium is a gas or a solid-liquid mixture.

[0051] like Figure 2 As shown, the first support member 22 has a through hole 223 for medium passage. Through hole 223 is positioned to avoid the second support member 33. Thus, after being filtered by the first filter section 21, the medium passes through through hole 223 and enters the second filter section 32, where it undergoes a secondary filtration. This arrangement of the second support member 33 and through hole 223 ensures that the medium can pass through through hole 223 and enter the second filter structure, thereby improving the reliability of the composite filter element.

[0052] The present application also provides a water purifier (not shown), comprising a housing and a composite filter element disposed in the housing, wherein the composite filter element is the composite filter element described above.

[0053] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0054] The first and second filter structures are both disposed within the inner cylinder structure, and the first and second filter structures are arranged along the height of the inner cylinder structure. At least a portion of the second filter structure is positioned above the first filter structure. Media entering the inner cylinder structure first enters the first filter structure, is filtered by the first filter section, then enters the second filter structure, and finally is filtered by the second filter section before being discharged from the inner cylinder structure. The second filter section of the second filter structure is connected to a positioning component, thereby enhancing the structural strength of the second filter structure. The positioning component of the second filter structure is connected to the first support member of the first filter structure, and the first filter structure supports the second filter structure via the first support member, i.e., the second filter structure is pressed against the first filter structure. This connection between the first and second filter structures reduces stress on the sidewalls of the inner cylinder structure, preventing structural damage or deformation of the inner cylinder structure. This solves the problem of low overall structural strength of filter elements in the prior art, which affects their service life, improves the overall structural strength of the composite filter element, and extends the service life of the composite filter element.

[0055] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0058] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A composite filter element, characterized in that: The invention comprises a first shell and an inner cylinder assembly disposed in the first shell, wherein the inner cylinder assembly comprises: An inner cylinder structure (10) having a mounting cavity (11); A first filter structure is arranged in the installation cavity (11), the first filter structure comprising a first filter portion (21); a second filter structure disposed in the mounting cavity (11), the second filter structure comprising a second filter portion (32), at least a portion of the second filter structure being located above the first filter structure; The first filter structure further comprises a first support member (22), the second filter structure further comprises a positioning member (30), the second filter portion (32) is connected to the positioning member (30), and the positioning member (30) is connected to the first support member (22), so that the first filter structure supports the second filter structure through the first support member (22); The positioning component (30) includes a second shell (31), the second filter portion (32) is arranged in the second shell (31), and the side wall of the second shell (31) has a weight-reducing hole (311). The inner cylinder assembly further includes: A first water blocking member (40), the first water blocking member (40) is used to block the weight-reducing hole (311).

2. The composite filter element according to claim 1, characterized in that: The positioning component (30) further includes a second support member (33), and the second support member (33) is disposed in the second filter portion (32).

3. The composite filter element according to claim 2, characterized in that: There are one or more weight-reducing holes (311). When there are multiple weight-reducing holes (311), the multiple weight-reducing holes (311) are arranged at intervals along the circumference of the second shell (31).

4. The composite filter element according to claim 3, characterized in that: There are one or more first water barrier members (40); when there is only one first water barrier member (40), the first water barrier member (40) is wound outside the second shell (31); When there are a plurality of the weight-reducing holes (311) and a plurality of the first water-blocking members (40), the plurality of the first water-blocking members (40) and the plurality of the weight-reducing holes (311) are arranged in a one-to-one correspondence.

5. The composite filter element according to claim 2, characterized in that: The second support member (33) is a rod body, and the rod body and the inner cylinder assembly are arranged in parallel in height direction. The first support member (22) has a first support surface (221) arranged toward the second filtering structure, and the first support surface (221) abuts against the rod body and is arranged perpendicular to each other.

6. The composite filter element according to claim 5, characterized in that: The second shell (31) has a contact end surface (312) arranged toward the first filtering structure, and the contact end surface (312) and the height direction of the inner cylinder assembly are arranged perpendicular to each other. The first support member (22) has a second support surface (222) arranged toward the second filtering structure, and the contact end surface (312) and the second support surface (222) are in contact with each other and are arranged parallel to each other.

7. The composite filter element according to claim 3, characterized in that: The inner cylinder structure (10) comprises: a first end cap (12); A second end cap (13) is connected to an end of the first filter structure away from the second filter structure; the composite filter element further comprises: A second water barrier (50), wherein the first end cover (12) is connected to the second end cover (13) via the second water barrier (50); wherein the first end cover (12), the second end cover (13) and the second water barrier (50) surround and form the installation cavity (11).

8. The composite filter element according to claim 7, characterized in that: The first water-isolating member (40) and / or the second water-isolating member (50) is a water-isolating cloth.

9. The composite filter element according to claim 7, characterized in that: The second support member (33) is a rod, the first end of which is connected to the first support member (22), and the second filtering structure further comprises: A third end cap (34) is provided at an end of the second housing (31) away from the first filtering structure and has a first opening. A gap (341) is provided between the second end of the rod body and the third end cap (34), and the gap (341) is in communication with the first opening.

10. The composite filter element according to claim 9, characterized in that: The first end cover (12) has a second opening communicating with the installation cavity (11), and the composite filter element further comprises: The mounting head (60) is arranged on the third end cover (34) and passes through the second opening to the outside of the inner cylinder structure (10); the mounting head (60) has a first liquid passage (61) communicating with the first opening, and a second liquid passage (121) communicating with the mounting cavity (11) is formed between the mounting head (60) and the first end cover (12).

11. The composite filter element according to claim 2, characterized in that: The first support member (22) has a through hole (223) for medium to pass through, and the through hole (223) is arranged to avoid the second support member (33).

12. A water purifier, characterized in that: It comprises a casing and a composite filter element arranged in the casing; wherein the composite filter element is the composite filter element according to any one of claims 1 to 11.

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