IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0507563
(2006-08-22)
|
등록번호 |
US-7472886
(2009-01-06)
|
우선권정보 |
JP-2005-248609(2005-08-30) |
발명자
/ 주소 |
- Shimane,Osamu
- Nanba,Kunio
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
7 |
초록
▼
A fluid control valve assembly is disclosed that includes a housing, a valve with a ring-shaped groove, and a seal ring with a clearance extending between an outer diameter and an inner diameter. The seal ring includes a pair of opposing axial side surfaces and is provided in the groove. The seal r
A fluid control valve assembly is disclosed that includes a housing, a valve with a ring-shaped groove, and a seal ring with a clearance extending between an outer diameter and an inner diameter. The seal ring includes a pair of opposing axial side surfaces and is provided in the groove. The seal ring seals against the housing when the valve is in the closed position. The valve assembly also includes a backup ring provided in the groove adjacent one of the axial side surfaces of the seal ring to thereby obstruct fluid flow through the clearance of the seal ring when the valve is in the closed position.
대표청구항
▼
What is claimed is: 1. A fluid control valve assembly for controlling the flow of a fluid comprising: a housing that defines a fluid passage; a valve with a ring-shaped groove, the valve provided in the fluid passage, wherein the valve has an open position for allowing the fluid to flow in the flui
What is claimed is: 1. A fluid control valve assembly for controlling the flow of a fluid comprising: a housing that defines a fluid passage; a valve with a ring-shaped groove, the valve provided in the fluid passage, wherein the valve has an open position for allowing the fluid to flow in the fluid passage, and wherein the valve has a closed position for reducing the flow of the fluid in the fluid passage; a seal ring with a cutout clearance extending between an outer diameter and an inner diameter of the seal ring, wherein the seal ring includes a pair of opposing axial side surfaces, wherein the seal ring is provided in the groove, and wherein the seal ring seals against the housing when the valve is in the closed position to thereby reduce flow of the fluid through the housing; and a backup ring provided in the groove adjacent one of the axial side surfaces of the seal ring to thereby obstruct fluid flow through the clearance of the seal ring when the valve is in the closed position, wherein: the backup ring is one of: a slitted backup ring that includes a slit, which extends between an outer diameter and an inner diameter of the backup ring and has a size smaller than that of the cutout clearance of the seal ring in a circumferential direction; and a slitless backup ring that extends continuously all around the groove in the circumferential direction; the seal ring and the backup ring protrude radially outwardly from the valve; and an outer diameter of the backup ring is less than that of the seal ring. 2. The fluid control valve assembly according to claim 1, wherein the backup ring is the slitted backup ring. 3. The fluid control valve assembly according to claim 2, wherein the slit and the clearance are misaligned in an axial direction. 4. The fluid control valve assembly according to claim 1, wherein the backup ring includes a downstream axial side surface and an upstream axial side surface; wherein the groove includes an upstream surface; and wherein the upstream axial side surface of the backup ring abuts against one of the axial side surfaces of the seal ring and the downstream axial side surface abuts against the upstream surface of the groove when the valve is in the closed position. 5. The fluid control valve assembly according to claim 1, wherein the backup ring is the slitless backup ring. 6. The fluid control valve assembly according to claim 5, wherein the valve includes a main body and a retainer that is removably coupled to the main body, wherein the backup ring and the seal ring are coupled to the valve between the main body and the retainer. 7. The fluid control valve assembly according to claim 6, wherein the retainer is threadably coupled to the main body. 8. The fluid control valve assembly according to claim 1, wherein the seal ring has a coefficient of thermal expansion such that the seal ring expands in a radial direction to thereby seal against the housing when the valve is in the closed position. 9. A fluid control valve assembly for controlling the flow of a fluid comprising: a housing that defines a fluid passage; a valve with a ring-shaped groove and a pair of ring-shaped protruded portions on opposing sides of the groove, the valve provided in the fluid passage, wherein the valve has an open position for allowing the fluid to flow in the fluid passage, and wherein the valve has a closed position for reducing the flow of the fluid in the fluid passage; a seal ring with a clearance extending between an outer diameter and an inner diameter of the seal ring, wherein the seal ring is provided in the groove, and wherein the seal ring seals against the housing when the valve is in the closed position to thereby reduce flow of the fluid through the housing; and a backup ring provided in the groove to thereby obstruct fluid flow through the clearance of the seal ring when the valve is in the closed position; wherein an outer diameter of one of the ring-shaped protruded portions is smaller than an outer diameter of the other ring-shaped protruded portion; wherein the backup ring is provided downstream of the seal ring when the valve is in the closed position; wherein the one of the ring-shaped protruded portions is provided upstream of the backup ring and the seal ring in a flow direction of the fluid when the valve is in the closed position; and wherein the other ring-shaped protruded portion is provided downstream of the backup ring in the flow direction of the fluid when the valve is in the closed position. 10. The fluid control valve assembly according to claim 9, wherein the seal ring has a coefficient of thermal expansion such that the seal ring expands in a radial direction to thereby seal against the housing when the valve is in the closed position. 11. A fluid control valve assembly for controlling the flow of a fluid comprising: a housing that defines a fluid passage; a valve with a ring-shaped groove and a pair of ring-shaped protruded portions on opposing sides of the groove, the valve provided in the fluid passage, wherein the valve has an open position for allowing the fluid to flow in the fluid passage, and wherein the valve has a closed position for reducing the flow of the fluid in the fluid passage; and a seal ring provided in the groove, wherein the seal ring seals against the housing when the valve is in the closed position to thereby reduce flow of the fluid through the housing; wherein an outer diameter of one of the ring-shaped protruded portions is smaller than an outer diameter of the other ring-shaped protruded portion; wherein the one of the ring-shaped protruded portions is provided upstream of the seal ring in a flow direction of the fluid when the valve is in the closed position; and wherein the other ring-shaped protruded portion is provided downstream of the seal ring in the flow direction of the fluid when the valve is in the closed position. 12. The fluid control valve assembly according to claim 11, further comprising a backup ring provided in the groove downstream of the seal ring, wherein, when the valve is in the closed position, the seal ring seals against the backup ring, and the backup ring seals against the one of the ring-shaped protruded portions of the valve. 13. The fluid control valve assembly according to claims 12, wherein the seal ring has a coefficient of thermal expansion such that the seal ring expands in a radial direction to thereby seal against the housing when the valve is in the closed position.
이 특허에 인용된 특허 (7)
-
DeSalve Dennis W. (Findlay OH), Butterfly type valve seal.
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Etcheverry John P. (Sylmar CA), Butterfly valve.
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Thurston David Frederick,GBX ; Furness John,GBX, Butterfly valves.
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Nanba,Kunio; Maeda,Kazuto; Hashimoto,Koji, Emission gas recycling equipment having butterfly valve.
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Nanba,Kunio; Maeda,Kazuto; Hashimoto,Koji; Sakai,Tatsuo, Emission gas recycling equipment having butterfly valve.
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Strickler Philippe (Toulouse FRX) Renaux Jean-Michel (Toulouse FRX), Obturator ring for butterfly valve.
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Oshima Akira (No. 136 ; Idogayanakamchi ; Minami-ku Yokohama-City JPX), Seal system for butterfly valve.
이 특허를 인용한 특허 (2)
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Polcyn, Nicholas; Logan, Jonathan; Smolarek, Dallas, EGR device having slidable valve.
-
Cobianchi, Andrea; Dragone, Pasquale; Petrachi, Marco, Electromagnetic valve for the dosage of fuel in an internal combustion engine.
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