[특허]Three-way poppet valve with internal check feature

Three-way poppet valve with internal check feature 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-001/00
출원번호	US-0873377 (2010-09-01)
등록번호	US-8763989 (2014-07-01)
발명자 / 주소	Doutt, Michael L.
출원인 / 주소	Parker-Hannifin Corporation
대리인 / 주소	Renner, Otto, Boisselle & Sklar L.L.P.
인용정보	피인용 횟수 : 0 인용 특허 : 36

초록 ▼

A three-way poppet valve that can restrict or eliminate backflow without the use of an external check valve. Unlike conventional three-way poppet valves wherein both inlets can be open to the outlet at the same time during movement of the poppet, the valve according to the present invention can be configured to close both inlets prior to opening one of the inlets to the outlet. The valve features a poppet valve assembly that is operable to prevent both inlets from being open to the outlet at the same time. The valve assembly also reduces the force needed to close the valve against at least one of the inlets thereby allowing the use of a smaller actuator. A unique seal including a valve seat that is configured to conform to a valve member under sufficient pressure.

대표청구항 ▼

1. A poppet valve comprising: a valve body having a passage;a valve seat element supported by the valve body and having a thermoplastic radially inner spherical sealing surface; anda valve element supported for axial movement within the passage and having a spherical sealing surface for engaging the sealing surface of the valve seat;wherein the spherical sealing surface of the seat element has a larger spherical diameter than the spherical sealing surface of the valve element. 2. A poppet valve as set forth in claim 1, wherein the seat spherical seal surface is configured to deform under sufficient pressure applied thereto by the valve element to provide for a variable amount of seal area to be in contact with the valve element in order to maintain a contact stress above a minimum level required to provide for consistent seal tightness at low pressure while also providing for increased seal contact area in order to reduce seat stress and minimize plastic deformation of the valve element sealing surface at higher pressure. 3. A poppet valve as set forth in claim 1, wherein the valve seat element is supported by the valve body such that upon application of sufficient pressure by the valve element to the valve seat sealing surface, at least a portion of the valve seat will extrude into a space between the valve body and the valve element providing for further increased seal contact area thereby to reduce seat stress and minimize plastic deformation of the valve element sealing surface at higher pressures. 4. A poppet valve as set forth in claim 1, wherein the valve seat element is made of a non-resilient plastic material. 5. A poppet valve as set forth in claim 4, wherein the plastic material includes one of a thermoplastic or a flouroplastic material. 6. A poppet valve as set forth in claim 5, wherein the thermoplastic and flouroplastic materials are selected from the group consisting of PTFE of filled, unfilled and advanced copolymer grades thereof. 7. A seal assembly for sealing a passageway in a valve comprising: a non-resilient plastic valve seat element having a radially inner spherical sealing surface; anda valve element having a spherical sealing surface for engaging the sealing surface of the valve seat;wherein the spherical sealing surface of the seat element has a larger spherical diameter than the spherical sealing surface of the valve element. 8. A seal assembly as set forth in claim 7, wherein the seat spherical seal surface is configured to deform under sufficient pressure applied thereto by the valve element to provide for a variable amount of contact area with the valve element in order to maintain a contact stress above a minimum level required to provide for consistent seal tightness at low valve pressures while also providing for increased seal contact area in order to reduce seat stress and minimize plastic deformation of the valve element sealing surface at high valve pressures. 9. A seal assembly as set forth in claim 7, wherein the valve seat element is configured to extrude into a space between a valve body in which the valve seat is installed and the valve element providing for increased seal contact area thereby to reduce seat stress and minimize plastic deformation of the valve element sealing surface at higher valve pressures. 10. A seal assembly as set forth in claim 7, wherein the plastic material includes one of a thermoplastic or a flouroplastic material. 11. A poppet valve as set forth in claim 10, wherein the thermoplastic and flouroplastic materials are selected from the group consisting of PTFE of filled, unfilled and advanced copolymer grades thereof.

이 특허에 인용된 특허 (36)

Goto Kenji (Susono JA) Hashiguchi Yukihide (Susono JA) Shibata Norio (Susono JA), Air flow direction control valves.
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Pratt David W., Bailer having leak-inhibiting cushioned seal.
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Gute Robert M. (Corunna MI), Ball check valve.
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Koch Ulrich H. (Bainbridge Township ; Ross County OH) Williams Peter C. (Cleveland Hts. OH), Ball valve and seat assembly.
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Simmons, John M.; Simmons, Tom M.; Simmons, David M., Check valve.
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Cardoso Louis ; Autrey Robert, Debris-resistant hydropneumatic valve.
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Gibson Dennis H. (Chillicothe IL) Hefler Gregory W. (Dunlap IL) Shinogle Ronald D. (Peoria IL) Sommars Mark F. (Sparland IL), Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-oper.
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Gibson Dennis H. (Chillicothe IL) Hefler Gregory W. (Dunlap IL) Shinogle Ronald D. (Peoria IL) Sommars Mark F. (Sparland IL) Cannon Howard N. (Peoria IL), Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-oper.
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Caley David James,AUX, Fuel injector nozzles.
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Barkhimer Robert L. (Chula Vista CA), High cycle solenoid valve.
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Maley Dale C. (Fairbury IL) Shinogle Ronald D. (Peoria IL), Hydraulically-actuated fluid injector having pre-injection pressurizable fluid storage chamber and direct-operated check.
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Kpper Heinz (Troisdorf-Sieglar DEX), Injection system for injecting two fuels through one injection nozzle.
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Masuyama Tetsuo (Hatogaya JPX) Suzuki Yasuo (Tochigi JPX), Inline type check valve.
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Avila, Miguel I., Low leak pressure control actuator.
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Lechner-Fish, Teresa; Mancha, Henry, Low-cost stream switching system.
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Venable Frederick D., Method of making a poppet valve.
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Hadden Edward H. (12 Laurel Dr. Granby CT 06035), Miniaturized valve.
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Tinholt Thomas (Galesburg MI), Poppet construction for valve.
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Shaw Richard E. (Inman SC) Wolverton Steven R. (Simpsonville SC), Poppet valve flow seat.
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Toshio Kamimura (Gifu JPX) Koji Ito (Gifu JPX), Pressure balance type solenoid controlled valve.
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Haeberer Rainer,DEX ; Buerkle Frieder,DEX ; Clauss Helmut,DEX ; Rueckle Markus,DEX, Pressure control valve.
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Yoshida Shoichi (Fuji JPX), Pressure differential automatic transfer type three-way valves.
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Anderson David L. ; Dzioba David A., Solenoid valve.
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Mayeux Donald P. (Prairieville LA), Stream selector for process analyzer.
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Mayeux Donald P. (Prairieville LA), Stream selector for process analyzer.
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Mayeux Donald P. (Prairieville LA), Stream selector for process analyzer.
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Edward M. Browne, Stream switching system.
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Reid, II, Kenneth E.; Ruiz, Frank A., Stream switching system.
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Okazaki Masafumi,JPX ; Ozawa Hiromasa,JPX, Three way electromagnetic valve.
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Yonezawa Keitaro (Kobe JPX), Three way valve assembly with pressure compensating valve.
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Leys, John A.; Stoick, Michael, Three-way plastic valve.
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Watson Richard R., Three-way poppet valve.
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Kingsford Kenji (Devore CA), Three-way poppet valve apparatus.
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Fong Keith B. ; Reuter David Fredrick ; Seetharaman Viswanath ; Baldauf Dale Lee, Two-position, three-way solenoid-actuated valve.
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Sebion Timothy L. ; Powers Frederick Allan, Valve assembly for use with high pressure pumps.
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Moreno, Alejandro; Carrillo, Conrado, Variable force actuator with a double needle poppet assembly.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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