CN-122003284-A - Filter cartridge and filter device

Abstract

A cartridge that requires easy diffusion of fluid to the end of the filter element. A filter element includes a filter element having a cylindrical shape with a hollow portion, a core body having an elongated shape and inserted into the hollow portion of the filter element so as to support the hollow portion of the filter element, and having a plurality of holes between the front and rear surfaces of the core body so as to communicate between the front and rear surfaces of the core body, a first end plate joined to one end of the core body and one end of the filter element so as to seal one end of the core body, and a second end plate joined to the other end of the core body and the other end of the filter element so as to have an opening opened so as to communicate with the hollow portion of the core body.

Inventors

• Xi Mushi

Assignees

• 洛奇科技株式会社

Dates

Publication Date

20260508

Application Date

20241111

Priority Date

20231117

Claims (20)

1. 1. A filter cartridge, comprising: a filter material formed in a cylindrical shape having a hollow portion; A core body having an elongated shape with a hollow portion, the core body being inserted into the hollow portion of the filter medium so as to support the hollow portion of the filter medium, and having a plurality of holes between the front and rear surfaces of the core body to communicate the front and rear surfaces of the core body; a first end plate joined to one end of the core and one end of the filter material to seal one end of the core, and A second end plate joined to the other end of the core and the other end of the filter, having an opening communicating with the hollow portion of the core, Wherein, the The one end of the core has a notch, the engagement of the one end of the core with the first end plate is the engagement of the end face of the core other than the notch with the first end plate, and the one end of the filter medium and the hollow portion of the core are also in fluid communication via the notch.
2. 2. A filter cartridge according to claim 1, wherein, The filter material is a membrane film, The shape of the cylinder is formed by overlapping and folding the film sheet film in the circumferential direction of the cylinder.
3. 3. A filter cartridge according to claim 1 or 2, wherein, The filter element has a cover which has an elongated shape and a cylindrical shape including a hollow portion, and which supports an outer surface of the cylindrical body of the filter medium, and a plurality of holes which communicate between the front and rear surfaces of the cover are provided between the front and rear surfaces of the cover.
4. 4. A filter cartridge, comprising: a filter material formed in a cylindrical shape having a hollow portion; A core body having an elongated shape, inserted into the hollow portion of the filter medium so as to support the hollow portion of the filter medium, and having a plurality of holes between the front and rear surfaces of the core body to communicate the front and rear surfaces of the core body; A first end plate that is joined to one end of the core and one end of the filter material, and seals one end of the core; A second end plate joined to the other end of the core and the other end of the filter medium and having an opening, and A cylindrical flow path having a hollow flow path inside, the cylindrical flow path being disposed in the hollow portion of the core in an axial direction of the core, and having one end joined to the first end plate and the other end joined to the second end plate, Wherein, the A space defined between an inner surface of the core and an outer surface of the cylindrical flow path is in fluid communication with the hollow flow path of the cylindrical flow path on the one end side of the cylindrical flow path and is not in fluid communication with the hollow flow path of the cylindrical flow path on the other end side of the cylindrical flow path.
5. 5. The cartridge of claim 4, wherein, The filter material is a membrane film, The shape of the cylinder is formed by overlapping and folding the film sheet film in the circumferential direction of the cylinder.
6. 6. The cartridge of claim 4, wherein, A space defined between the core and the outer surface of the cylindrical flow path is not in fluid communication with the hollow flow path of the cylindrical flow path at a location other than the one end of the cylindrical flow path on the first end plate side.
7. 7. The cartridge of claim 4, wherein, The filter element has a cover which has an elongated shape and a cylindrical shape including a hollow portion, and which supports an outer surface of the cylindrical body of the filter medium, and a plurality of holes which communicate between the front and rear surfaces of the cover are provided between the front and rear surfaces of the cover.
8. 8. A filter cartridge according to any one of claims 4 to 7, wherein, The cylindrical flow passage is inserted into the opening of the second end plate, and an outer surface of the cylindrical flow passage is hermetically joined to an inner surface of the opening of the second end plate.
9. 9. A filter cartridge, comprising: a filter material formed in a cylindrical shape having a hollow portion; A core body having an elongated shape with a hollow portion, the core body being inserted into the hollow portion of the filter medium so as to support the hollow portion of the filter medium, and having a plurality of holes between the front and rear surfaces of the core body to communicate the front and rear surfaces of the core body; A first end plate that is joined to one end of the core and one end of the filter material, and seals one end of the core; A second end plate joined to the other end of the core and the other end of the filter medium and having an opening, and A cylindrical flow path having a hollow flow path inside, the cylindrical flow path being disposed in the hollow portion of the core in an axial direction of the core, one end of the cylindrical flow path being joined to the first end plate in a sealed manner, the other end of the cylindrical flow path being joined to the second end plate in a manner that a flow path connected to the hollow flow path of the cylindrical flow path is formed through the opening of the second end plate, Wherein, the Said one end of said core having a notch, said engagement of said one end of said core with a first end plate being engagement of an end face of said core other than said notch with said first end plate, said one end of said filter being in fluid communication with said hollow portion of said core via said notch as well, A space defined between an inner surface of the core and an outer surface of the cylindrical flow path is in fluid communication with the hollow flow path of the cylindrical flow path on the one end side of the cylindrical flow path and is not in fluid communication with the hollow flow path of the cylindrical flow path on the other end side of the cylindrical flow path.
10. 10. A filter cartridge according to claim 9, wherein, The filter material is a membrane film, The shape of the cylinder is formed by overlapping and folding the film sheet film in the circumferential direction of the cylinder.
11. 11. A filter cartridge according to claim 9, wherein, A space defined between the core and the outer surface of the cylindrical flow path is not in fluid communication with the hollow portion of the cylindrical flow path at a portion other than the one end of the cylindrical flow path on the first end plate side.
12. 12. A filter cartridge according to claim 9, wherein, The filter element has a cover which has an elongated shape and a cylindrical shape including a hollow portion, and which supports an outer surface of the cylindrical body of the filter medium, and a plurality of holes which communicate between the front and rear surfaces of the cover are provided between the front and rear surfaces of the cover.
13. 13. A filter cartridge according to any one of claims 9 to 12, wherein, The cylindrical flow passage is inserted into the opening of the second end plate, and an outer surface of the cylindrical flow passage is hermetically joined to an inner surface of the opening of the second end plate.
14. 14. A filter device having a filter cartridge therein, wherein, The filter cartridge has: a filter material formed in a cylindrical shape having a hollow portion; A core body having an elongated shape with a hollow portion, the core body being inserted into the hollow portion of the filter medium so as to support the hollow portion of the filter medium, and having a plurality of holes between the front and rear surfaces of the core body to communicate the front and rear surfaces of the core body; a first end plate joined to one end of the core and one end of the filter material to seal one end of the core, and A second end plate joined to the other end of the core and the other end of the filter, having an opening communicating with the hollow portion of the core, The one end of the core has a notch, the engagement of the one end of the core with the first end plate is the engagement of the end face of the core other than the notch with the first end plate, and the one end of the filter medium and the hollow portion of the core are also in fluid communication via the notch.
15. 15. The filter device according to claim 14, wherein, The filter material is a membrane film, The shape of the cylinder is formed by overlapping and folding the film sheet film in the circumferential direction of the cylinder.
16. 16. The filter device according to claim 14 or 15, wherein, The filter device has a cover which has an elongated shape and a cylindrical shape including a hollow portion, and which supports an outer surface of the cylindrical body of the filter medium, and a plurality of holes which communicate between the front and rear surfaces of the cover are provided between the front and rear surfaces of the cover.
17. 17. A filter device having a filter cartridge therein, wherein, The filter cartridge has: a filter material formed in a cylindrical shape having a hollow portion; A core body having an elongated shape, inserted into the hollow portion of the filter medium so as to support the hollow portion of the filter medium, and having a plurality of holes between the front and rear surfaces of the core body to communicate the front and rear surfaces of the core body; A first end plate that is joined to one end of the core and one end of the filter material, and seals one end of the core; A second end plate joined to the other end of the core and the other end of the filter medium and having an opening, and A cylindrical flow path having a hollow flow path inside, the cylindrical flow path being disposed in the hollow portion of the core in an axial direction of the core, and having one end joined to the first end plate and the other end joined to the second end plate, A space defined between an inner surface of the core and an outer surface of the cylindrical flow path is in fluid communication with the hollow flow path of the cylindrical flow path on the one end side of the cylindrical flow path and is not in fluid communication with the hollow flow path of the cylindrical flow path on the other end side of the cylindrical flow path.
18. 18. The filter device according to claim 17, wherein, The filter material is a membrane film, The shape of the cylinder is formed by overlapping and folding the film sheet film in the circumferential direction of the cylinder.
19. 19. The filter device according to claim 17, wherein, A space defined between the core and the outer surface of the cylindrical flow path is not in fluid communication with the hollow portion of the cylindrical flow path at a portion other than the one end of the cylindrical flow path on the first end plate side.
20. 20. The filter device according to claim 17, wherein, The filter device has a cover which has an elongated shape and a cylindrical shape including a hollow portion, and which supports an outer surface of the cylindrical body of the filter medium, and a plurality of holes which communicate between the front and rear surfaces of the cover are provided between the front and rear surfaces of the cover.

Description

Filter cartridge and filter device Technical Field The present invention relates to a filter cartridge (FILTER CARTRIDGE) supporting a filter medium and a filter device. Background For example, as shown in fig. 1, a filter element 1 is known which is disposed in a filter container 5 as a filter device. The filter element 15 as a filter medium is incorporated in the filter element 1 as a filter support, and is detachably fixed to and supported by the filter element 1. The filter container 5 has a first fluid port 51 and a second fluid port 52. The first fluid port 51 communicates with the outer surface side of the filter element 15, and the second fluid port 52 communicates with the inner surface side of the filter element 15. For example, typically, the first fluid port 51 can function as a fluid inflow port and the second fluid port 52 can function as a fluid outflow port. In this case, the fluid to be filtered is introduced into the filter container 5 from the first fluid port 51, passes through the outer surface side of the filter element 15 disposed in the filter element 1 as upstream, and flows out of the filter container 5 from the second fluid port 52 as downstream. Conversely, the second fluid port 52 may be a fluid inflow port, and the first fluid port 51 may be a fluid outflow port. In this case, the fluid to be filtered is introduced into the filter container 5 from the second fluid port 52, passes through the inner surface side of the filter element 15 disposed in the filter element 1 as upstream, and flows out of the filter container 5 from the first fluid port 51 as downstream. In the following, in the present specification, an example will be described in which the first fluid port 51 is a fluid inlet port and the second fluid port 52 is a fluid outlet port, in the embodiment for carrying out the invention in accordance with the background of the invention. In the latter case, however, the direction of flow is merely reversed, the remainder being the same. The filter element 15 is typically of cylindrical shape with a hollow interior. A hollow cylindrical core 14 is disposed in the hollow portion of the filter element 15, a cylindrical cover 11 is disposed outside the filter element 15, and the filter element 15 is supported so as to be sandwiched between the cover 11 and the core 14. A first end plate 12 and a second end plate 13 are respectively disposed at both ends of the filter element 15. The first end plate 12 and the second end plate 13 are fixed to the filter element 15, the cover 11, and the core 14 by welding or the like. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2001-99775 Disclosure of Invention Problems to be solved by the invention As disclosed in patent document 1, in an integrity test for normally performing filtration, it is required to sufficiently wet the filter element with a liquid. For example, a diffusion test in an integrity test of the filter element 15 typified by a membrane filter is a test in which the gas is used to raise the upstream side of the filter element 15 to a predetermined test pressure, and the diffusion flow rate of the gas is measured on the downstream side of the filter element 15. In the diffusion test, as a precondition, the filter as a whole was required to be completely wetted to the respective corners of the filter element 15. But the decrease in wettability of the filter element 15 is concentrated at the dead-end portion D of the end portion of the filter element 15. For example, as shown in fig. 5, in the flow FL of the filter cartridge 1 in which the fluid flows into the filter element 15 from the outer peripheral portion of the filter element 15 and flows out from the inner peripheral surface of the filter toward the core 14 as the flow path of the central portion, the flow is weaker than the flow FLb of the lower portion of the filter element 15 in the vertical direction because the flow distance of the flow FLu of the upper portion of the filter element 15 in the vertical direction is longer, and the flow rate of the flow FLb of the lower portion of the filter element 15 in the vertical direction is greater than the flow rate of the flow FLu of the upper portion of the filter element 15 in the vertical direction. As a result, uniform flow throughout the entire filter element 15 cannot be achieved, and it is difficult for the fluid to spread to the end portion that is one end 15a of the filter element 15, and the decrease in wettability of the filter medium concentrates on the dead-end portion D of the end portion on the one end 15a side of the filter element 15, and it is difficult to ensure complete wettability. Since the diffusion test is a positioning of a confirmation test in the manufacture of the filter, the filter element generally does not have a structure that ensures complete wettability up to the dead center portion D of the end portion of the filter element 15 only for the diffusion