IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0389841
(2003-03-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
14 |
초록
▼
The filtration cartridge comprises a filtration element and a heat-resistant extension band having a first and a second longitudinal edge. The first edge of the extension band is attached along an edge of the filtration element. In a first embodiment, a metallic cast end member is formed by immersin
The filtration cartridge comprises a filtration element and a heat-resistant extension band having a first and a second longitudinal edge. The first edge of the extension band is attached along an edge of the filtration element. In a first embodiment, a metallic cast end member is formed by immersing the second edge of the extension band into molten metal. The molten metal is then allowed to solidify with the second edge of the extension band embedded therein. In a second embodiment, the extension band is squeezed on a porous inner core and an end plate is welded on the end of the inner core. Providing filtration cartridges with a metallic end member allows increasing their resistance to mechanical shocks and increasing their maximum operating temperatures.
대표청구항
▼
1. A filtration cartridge comprising:a filtration element; a heat-resistant extension band having a first and a second longitudinal edge, the first edge being attached along an edge of the filtration element; and a metallic cast end member, the second edge of the extension band being embedded within
1. A filtration cartridge comprising:a filtration element; a heat-resistant extension band having a first and a second longitudinal edge, the first edge being attached along an edge of the filtration element; and a metallic cast end member, the second edge of the extension band being embedded within the metallic cast end member, wherein said filtration element is heat resistant up to a maximum temperature that is relatively low compared to a melting point temperature of said metallic cast end member. 2. The filtration cartridge according to claim 1, wherein the extension band is made of a metal sheet.3. The filtration cartridge according to claim 2, wherein the extension band has a thickness between 20 and 500 microns, and a width between 5 and 150 mm.4. The filtration cartridge according to claim 1, wherein the filtration element includes a porous fabric.5. The filtration cartridge according to claim 4, wherein the filtration element is pleated and shaped to form a hollow cylinder.6. The filtration cartridge according to claim 5, further comprising a rigid, heat-resistant and porous inner core coaxially disposed inside the filtration element, the inner core having one end embedded within the metallic cast end member.7. The filtration cartridge according to claim 6, wherein the inner core comprises a cylindrical metallic supporting mesh.8. The filtration cartridge according to claim 4, wherein the first edge of the extension band overlaps the edge of the filtration element and is attached thereto using at least one sewing thread.9. The filtration cartridge according to claim 8, wherein the sewing thread is a metallic wire.10. The filtration cartridge according to claim 1, wherein the metallic cast end member comprises aluminum solidified onto the embedded second edge of the extension band.11. The filtration cartridge according to claim 1, further comprising an outer cup attached over the metallic cast end member, whereby the outer cup served as a molten metal mold during manufacturing.12. A filtration cartridge comprising:a filtration element having two opposite edges, the filtration element including a pleated porous fabric shaped as a hollow cylinder; two metallic extension bands, each having a first and a second longitudinal edge, the first edge of each extension band being sewed along a corresponding edge of the filtration element and pleated therewith; a rigid metallic cylindrical porous inner core coaxially disposed inside the filtration element, the inner core having two opposite ends, each end being adjacent to the second edge of one corresponding extension band; and two metallic cast end members, the second edge of each extension band and each adjacent end of the inner core being embedded within one corresponding metallic cast end member. 13. The filtration cartridge according to claim 12, wherein each extension band has a thickness between 20 and 500 microns, and a width between 5 and 150 mm.14. The filtration cartridge according to claim 12, wherein the inner core comprises a supporting mesh.15. The filtration cartridge according to claim 12, wherein the first edge of each extension band overlaps the corresponding edge of the filtration element and is attached thereto using at least one sewing thread.16. The filtration cartridge according to claim 15, wherein the sewing threads are metallic wires.17. The filtration cartridge according to claim 12, wherein the metallic cast end members comprises aluminum solidified onto the embedded second edge of the extension bands.18. The filtration cartridge according to claim 12, further comprising an outer cup attached over each of the metallic cast end members, whereby each of the outer cups served as a molten metal mold during manufacturing.19. A method for providing a metallic end member at an edge of a filtration element, the method comprising:attaching a heat-resistant extension band along the edge of the filtration element, the extension band having a first and a second longitudinal edge; immersing the second edge of the extension band into molten metal provided in a mold; and allowing the molten metal to solidify with the second edge of the extension embedded therein, wherein said filtration element is heat resistant up to a maximum temperature that is relatively low compared to a melting point temperature of said metallic end member. 20. The method according to claim 19, wherein the extension band is attached to the filtration element by overlapping the first edge of extension band and the edge of the filtration element, and then sewing them together.21. The method according to claim 20, further comprising:pleating the filtration element and the extension band before immersing the second edge of the extension band into the molten metal. 22. The method according to claim 21, further comprising:shaping the pleated filtration element and extension band as a hollow cylinder; inserting a rigid, heat-resistant and porous inner core inside the cylinder, the inner core having two opposite ends; and immersing one of the ends of the inner core into the molten metal before it solidifies. 23. The method according to claim 19, wherein the molten metal is cast in an individual mold, at least a portion of the mold being left on the solidified metal.24. The method according to claim 19, further comprising:providing a second extension band on a second edge of the filtration element, the second edge of the filtration element being opposite its other edge, the second extension band having a first and a second longitudinal edge, the first edge of the second extension band being attached to the second edge of the filtration element. 25. The method according to claim 24, wherein after solidification of the molten metal, the method further comprises:pivoting the filtration element, the extension bands and the metallic cast end member; and providing a second metallic cast end member, connected to the second edge of the second extension band, by immersing the second edge of the second extension band into molten metal and allowing the molten metal to solidify so as to embedded it therein.
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