Low volume, pressure assisted, stem and seat vent valve and associated methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-001/38
F16K-001/42
F16K-031/06
B01D-015/16
B01D-015/40
G01N-030/32
출원번호
US-0381976
(2013-03-07)
등록번호
US-9765896
(2017-09-19)
국제출원번호
PCT/US2013/029529
(2013-03-07)
국제공개번호
WO2013/134471
(2013-09-12)
발명자
/ 주소
Shreve, Joshua A.
Trudeau, Steven D.
출원인 / 주소
Waters Technologies Corporation
대리인 / 주소
McCarter & English, LLP
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
Exemplary embodiments are directed to vent valves, systems and methods generally involving a valve body that includes a seat retainer, a needle and a seat. The seat includes a bore extending there through and the needle includes a needle stem and a needle head. The seat is disposed inside the seat r
Exemplary embodiments are directed to vent valves, systems and methods generally involving a valve body that includes a seat retainer, a needle and a seat. The seat includes a bore extending there through and the needle includes a needle stem and a needle head. The seat is disposed inside the seat retainer. The needle stem is disposed inside the bore. The needle is configured to be pulled through the seat to stop flow through the bore. Exemplary embodiments are further directed to a system including a stem return spring mechanism and a solenoid return spring mechanism. A processing device is configured to actuate the solenoid return spring mechanism to permit the stem return spring mechanism to pull the needle through the seat to stop flow through the bore.
대표청구항▼
1. A vent valve, comprising: a valve body that includes a seat retainer, a needle and a seat, the needle including a needle stem and a needle head, the seat including a bore extending between two outer side surfaces of the seat, the bore including a substantially uniformly extending inner bore defin
1. A vent valve, comprising: a valve body that includes a seat retainer, a needle and a seat, the needle including a needle stem and a needle head, the seat including a bore extending between two outer side surfaces of the seat, the bore including a substantially uniformly extending inner bore defined by an inner bore diameter and outwardly sloping, angled outlets extending continuously from both sides of the inner bore diameter of the substantially uniformly extending inner bore to a bore edge at the respective outer side surface of the seat, the outer side surfaces of the seat being angled towards each other;wherein the seat is disposed inside the seat retainer;wherein the needle stem is disposed inside the bore; andwherein the needle is configured to be pulled through the seat to position the needle head against the bore edge to stop flow through the bore. 2. The vent valve of claim 1, wherein the needle is configured to be pushed through the seat to start flow through the bore. 3. The vent valve of claim 1, wherein the needle comprises an exterior coating. 4. The vent valve of claim 3, wherein the exterior coating is at least one of a gold coating, a platinum coating, a ceramic coating, and a polymer coating. 5. The vent valve of claim 1, wherein a needle head diameter is greater than a needle stem diameter. 6. The vent valve of claim 5, wherein the needle comprises an angular sealing surface between the needle stem and the needle head for self-centering and aligning the needle during translation through the seat. 7. The vent valve of claim 6, wherein the angular sealing surface is pulled against the bore edge of the seat to stop flow through the bore. 8. The vent valve of claim 7, wherein a plastic deformation of the bore edge occurs during pulling of the angular sealing surface against the bore edge. 9. The vent valve of claim 8, wherein the plastic deformation conforms the bore edge geometry to a complimentary angular sealing surface geometry. 10. The vent valve of claim 9, wherein the plastic deformation of the bore edge geometry ensures a tight seal against the angular sealing surface. 11. The vent valve of claim 5, wherein an inner bore diameter is greater than the needle stem diameter. 12. The vent valve of claim 1, where the needle head comprises at least one head groove on a needle head face extending in a direction perpendicular to a longitudinal axis defined by the needle stem. 13. The vent valve of claim 1, wherein the needle stem comprises at least one stem groove extending in a direction parallel to a longitudinal axis defined by the needle stem. 14. The vent valve of claim 1, wherein pulling the needle through the seat to stop flow through the bore reduces an exposed volume of the valve body. 15. The vent valve of claim 1, wherein the seat is fabricated from at least one of a 30% carbon fiber filled PEEK material, a filled or unfilled grade PEEK, and a filled or unfilled grade of polyimide plastic. 16. The vent valve of claim 10, comprising a pressure force to enhance the tight seal against the angular sealing surface. 17. The vent valve of claim 1, wherein the seat comprises a unitary structure. 18. The vent valve of claim 1, wherein the seat comprises a plurality of components. 19. A method of closing a vent valve, comprising: providing a valve body that includes a seat retainer, a needle and a seat, the needle including a needle stem and a needle head, the seat including a bore extending between two outer side surfaces of the seat, the bore including a substantially uniformly extending inner bore defined by an inner bore diameter and outwardly sloping, angled outlets extending continuously from both sides of the inner bore diameter of the substantially uniformly extending inner bore to a bore edge at the respective outer side surface of the seat, the outer side surfaces of the seat being angled towards each other; wherein the seat is disposed inside the seat retainer;wherein the needle stem is disposed inside the bore; andpulling the needle through the seat to position the needle head against the bore edge to stop flow through the bore. 20. The method of claim 19, wherein a needle head diameter is greater than a needle stem diameter. 21. The method of claim 20, wherein the needle comprises an angular sealing surface between the needle stem and the needle head for self-centering and aligning the needle during translation through the seat. 22. The method of claim 21, comprising pulling the angular sealing surface against the bore edge of the seat to stop flow through the bore. 23. The method of claim 22, comprising plastically deforming the bore edge geometry to a complimentary angular sealing surface geometry. 24. The method of claim 23, wherein plastically deforming the bore edge geometry ensures a tight seal against the angular sealing surface. 25. The method of claim 24, comprising providing a pressure force to enhance the tight seal against the angular sealing surface. 26. A system for closing a vent valve, comprising: a valve body that includes a seat retainer, a needle, a seat, a stem return spring mechanism and a solenoid return spring mechanism, the needle including a needle stem and a needle head, the seat including a bore extending between two outer side surfaces of the seat, the bore including a substantially uniformly extending inner bore defined by an inner bore diameter and outwardly sloping, angled outlets extending continuously from both sides of the inner bore diameter of the substantially uniformly extending inner bore to a bore edge at the respective outer side surface of the seat, the outer side surfaces of the seat being angled towards each other; wherein the seat is disposed inside the seat retainer;wherein the needle stem is disposed inside the bore;wherein the stem return spring mechanism connects to a distal needle stem end opposing the needle head;wherein the solenoid return spring mechanism is in communication with the stem return spring mechanism; anda processing device configured to actuate the solenoid return spring mechanism to permit the stem return spring mechanism to pull the needle through the seat to position the needle head against the bore edge to stop flow through the bore.
Morinigo Fernando B. (Los Angeles CA) Blaire William C. (Buena Park CA) Bulgatz Dennis (Reseda CA), Core design for electromagnetically actuated valve.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.