The United States of America as Represented by the Administrator of NASA
대리인 / 주소
Leahy, Jonathan J.
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A pressure relief valve includes a housing having a fluid inlet and at least one fluid outlet. A first structure mounted in the housing and fixed in relation thereto is in magnetic attraction with a second structure coupled to a piston disposed in a portion of the housing. The piston defines a chamb
A pressure relief valve includes a housing having a fluid inlet and at least one fluid outlet. A first structure mounted in the housing and fixed in relation thereto is in magnetic attraction with a second structure coupled to a piston disposed in a portion of the housing. The piston defines a chamber disposed adjacent to the fluid outlet(s) throughout the piston's stroke. The piston includes a sealing element providing a sealing force to prevent flow through the valve. The sealing force is independent of the magnetic attraction force between the first and second structures.
대표청구항▼
1. A relief valve, comprising: a housing having a fluid inlet and at least one fluid outlet, said fluid inlet having an inlet flow area, said at least one fluid outlet having a total outlet flow area, said inlet flow area being greater than said total outlet flow area, said housing adapted to suppor
1. A relief valve, comprising: a housing having a fluid inlet and at least one fluid outlet, said fluid inlet having an inlet flow area, said at least one fluid outlet having a total outlet flow area, said inlet flow area being greater than said total outlet flow area, said housing adapted to support a fluid flow under pressure moving between said fluid inlet and said at least one fluid outlet;a first structure mounted in said housing and fixed in relation thereto, said first structure defining a pathway having a first end and a second end, said first end being in fluid communication with said fluid inlet of said housing; anda piston disposed in a portion of said housing for movement along a piston stroke, said piston defining a chamber disposed adjacent to said at least one fluid outlet throughout said piston stroke, said piston including a second structure having a magnetic attraction to said first structure, said piston including a face and a sealing element extending from said face for sealing said second end of said pathway when said piston is at one end of said piston stroke closest to said first structure wherein said magnetic attraction retains said piston at said one end of said piston stroke, said piston defining a flow path through said face in fluid communication with said chamber, wherein a total area defined by said flow path is greater than said total outlet flow area of said at least one fluid outlet, and wherein the fluid flow is restricted by said at least one fluid outlet when said magnetic attraction no longer retains said piston at said one end of said piston stroke. 2. A relief valve as in claim 1, wherein each of said first structure and said second structure comprises a hollow cylindrical magnet. 3. A relief valve as in claim 1, wherein each of said first structure and said second structure is selected from the group consisting of permanent magnets and electromagnets. 4. A relief valve as in claim 1, wherein said at least one fluid outlet comprises a plurality of fluid outlets distributed about said housing. 5. A relief valve as in claim 1, wherein said fluid inlet and said pathway are aligned along a longitudinal axis of said housing, and wherein said at least one fluid outlet defines a corresponding at least one outlet pathway aligned perpendicular to said longitudinal axis. 6. A relief valve as in claim 5, wherein said chamber encircles said longitudinal axis. 7. A relief valve as in claim 5, wherein said at least one fluid outlet comprises a plurality of fluid outlets distributed evenly about said housing. 8. A relief valve as in claim 1, wherein said fluid inlet and said pathway are aligned along a longitudinal axis of said housing, wherein a magnetic force associated with said magnetic attraction is parallel to said longitudinal axis, and wherein a sealing force associated with said sealing element sealing said second end of said pathway is perpendicular to said longitudinal axis. 9. A relief valve, comprising: a housing having a fluid inlet and a plurality of fluid outlets;a first magnet mounted in said housing and fixed in relation thereto, said first magnet being a hollow open-ended cylindrical magnet defining a pathway having a first end and a second end, said first end being in fluid communication with said fluid inlet of said housing;a piston disposed in a portion of said housing for movement along a piston stroke, said piston defining a chamber disposed adjacent to said fluid outlets throughout said piston stroke, said piston including a face and a sealing element extending from said face for sealing said second end of said pathway when said piston is at one end of said piston stroke closest to said first magnet, said piston including holes in said face that are in fluid communication with said chamber, wherein a total area defined by said holes is greater than a total area defined by said fluid outlets; anda second magnet coupled to said piston for movement therewith, said second magnet arranged to be in magnetic attraction to said first magnet, wherein said magnetic attraction retains said piston at said one end of said piston stroke. 10. A relief valve as in claim 9, wherein said second magnet comprises a cylindrical magnet. 11. A relief valve as in claim 9, wherein each of said first magnet and said second magnet is selected from the group consisting of permanent magnets and electromagnets. 12. A relief valve as in claim 9, wherein said fluid outlets are distributed evenly about said housing. 13. A relief valve as in claim 9, wherein said fluid inlet and said pathway are aligned along a longitudinal axis of said housing, and wherein said fluid outlets define corresponding outlet pathways aligned perpendicular to said longitudinal axis. 14. A relief valve as in claim 13, wherein said chamber encircles said longitudinal axis. 15. A relief valve as in claim 9, wherein said fluid inlet and said pathway are aligned along a longitudinal axis of said housing, wherein a magnetic force associated with said magnetic attraction is parallel to said longitudinal axis, and wherein a sealing force associated with said sealing element sealing said second end of said pathway is perpendicular to said longitudinal axis. 16. A relief valve, comprising: a housing having a fluid inlet and at least one fluid outlet;a first magnetic structure mounted in said housing and fixed in relation thereto, said first magnetic structure defining a fluid pathway having a first end and a second end, said first end being in fluid communication with said fluid inlet of said housing;a spool-shaped piston having a first end face, a second end face, and a longitudinal core spanning between and coupled to said first end face and said second end face, said first end face and said second end face sized for sliding engagement with a portion of said housing along a piston stroke wherein an annular chamber is defined between said longitudinal core and said housing, said annular chamber disposed adjacent to said at least one fluid outlet throughout said piston stroke, said first end face having through holes in fluid communication with said chamber wherein a total area defined by said through holes is greater than a total area defined by said at least one fluid outlet;a sealing element extending from said first end face for sealing said second end of said fluid pathway when said piston is at one end of said piston stroke closest to said first magnetic structure; anda second magnetic structure coupled to said piston and arranged to be in magnetic attraction to said first magnetic structure wherein said magnetic attraction retains said piston at said one end of said piston stroke. 17. A relief valve as in claim 16, wherein each of said first magnetic structure and said second magnetic structure comprises a hollow cylindrical magnet. 18. A relief valve as in claim 16, wherein each of said first magnetic structure and said second magnetic structure is selected from the group consisting of permanent magnets and electromagnets. 19. A relief valve as in claim 16, wherein said at least one fluid outlet comprises a plurality of fluid outlets distributed about said housing. 20. A relief valve as in claim 16, wherein said fluid inlet and said fluid pathway are aligned along a longitudinal axis of said housing, and wherein said at least one fluid outlet defines a corresponding at least one outlet pathway aligned perpendicular to said longitudinal axis. 21. A relief valve as in claim 16, wherein said at least one fluid outlet comprises a plurality of fluid outlets distributed evenly about said housing. 22. A relief valve as in claim 16, wherein said fluid inlet and said fluid pathway are aligned along a longitudinal axis of said housing, wherein a magnetic force associated with said magnetic attraction is parallel to said longitudinal axis, and wherein a sealing force associated with said sealing element sealing said second end of said fluid pathway is perpendicular to said longitudinal axis.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.