GAS VALVE WITH OVERTRAVEL

• US 20070131286A1
• Filed: 12/09/2005
• Published: 06/14/2007
• Est. Priority Date: 12/09/2005
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Konecny, Pavel, Benda, Jiri
• Granted Patent: US 7,624,755 B2
• Time in Patent Office: Days
• US Class Current: 137/554
• CPC Class Codes: F16K 1/425 Attachment of the seat to the housing by plastical deformation, e.g. valve seat or housing being plastically deformed during mounting
• CPC Class Codes: F16K 1/443 the seats being in series
• CPC Class Codes: F16K 27/029 Electromagnetically actuated valves
• CPC Class Codes: Y10T 137/7867 Sequential
• CPC Class Codes: Y10T 137/7868 Resilient gasket
• CPC Class Codes: Y10T 137/8242 Electrical
• CPC Class Codes: Y10T 137/87917 Flow path with serial valves and/or closures

Abstract

A gas valve may include a valve body and a valve member disposed within the valve body. A resilient sealing ring may be disposed within the valve body such that the valve member achieves a closed position when the valve member contacts the resilient sealing ring. In some instances, a gas valve may include both an upper resilient sealing ring and a lower resilient sealing ring. The upper resilient sealing ring and the lower resilient sealing ring may both permit overtravel.

Claims

1. A gas valve comprising:

a valve body;

a valve member disposed within the valve body, the valve member movable between an open position in which gas flow is permitted through the gas valve and a closed position in which gas flow is not permitted through the gas valve; and

a resilient sealing ring disposed between the valve member and the valve body, the resilient sealing ring being adapted to permit the valve member to continue moving beyond a position in which the valve member initially reaches its closed position.

2. The gas valve of claim 1, wherein the resilient sealing ring is secured to the valve body.

3. The gas valve of claim 1, wherein the resilient sealing ring is secured to the valve member.

4. The gas valve of claim 1, wherein the resilient sealing ring comprises a sealing bead adapted to seal against the valve body and the valve member.

5. The gas valve of claim 4, wherein the resilient sealing ring further comprises a flexible portion adapted to permit the sealing bead to move in response to contact with the valve body or the valve member.

6. A gas valve comprising:

a valve body;

a valve member disposed within the valve body, the valve member movable between an open position and a closed position; and

means to permit overtravel disposed within the valve body.

7. The gas valve of claim 6, wherein the means to permit overtravel comprise a resilient sealing ring, the resilient sealing ring contacting the valve body and the valve member when the valve member is in the closed position.

8. The gas valve of claim 7, wherein the resilient sealing ring is configured to permit the valve member to travel beyond a position at which the valve member first contacts the resilient sealing ring.

9. A gas valve comprising:

a valve body;

a valve member disposed within the valve body, the valve member comprising a first disk and a second disk, the valve member having an open position and a closed position;

a first resilient sealing ring disposed within the valve body proximate the first disk; and

a second resilient sealing ring secured to the valve member proximate the second disk;

wherein when the valve member is in its closed position, the first disk contacts the first resilient sealing ring and the second resilient sealing ring contacts the valve body.

10. The gas valve of claim 9, wherein the first resilient sealing ring and the second resilient sealing ring are each adapted to permit valve member overtravel.

11. The gas valve of claim 9, wherein the first resilient sealing ring comprises a sealing bead adapted to contact the valve member, a securement portion adapted to secure the first resilient sealing ring to the valve body, and a flexible portion extending between the sealing bead and the securement portion.

12. The gas valve of claim 11, wherein the first resilient sealing ring further comprises a securement ring disposed within the securement portion.

13. The gas valve of claim 9, wherein the second resilient sealing ring comprises a sealing bead adapted to contact the valve body, a securement portion adapted to secure the second resilient sealing ring to the valve member, and a flexible portion extending between the sealing bead and the securement portion.

14. The gas valve of claim 13, wherein the second resilient sealing ring further comprises a securement ring disposed within the securement portion.

15. The gas valve of claim 10, wherein the valve member further comprises a shaft extending to a proof of closure switch.

16. The gas valve of claim 15, wherein the proof of closure switch is adapted to provide an indication of valve closure upon overtravel by the valve member.

17. A valve assembly, comprising:

a first balanced port valve comprising;

a first valve chamber;

a first valve member disposed within the first valve chamber, the first valve member having an upper disk and a lower disk; and

a first upper resilient sealing ring secured within the first valve chamber and a first lower resilient sealing ring secured to the first valve member; and

a second balanced port valve comprising;

a second valve chamber;

a second valve member disposed within the second valve chamber, the second valve member having an upper disk and a lower disk; and

a second upper resilient sealing ring secured to the second valve member and a second lower resilient sealing ring secured within the second valve chamber.

18. The valve assembly of claim 17, wherein the first valve member and the second valve member are separately actuated.

19. The valve assembly of claim 17, wherein the first valve member and the second valve member are actuated in tandem.

20. The valve assembly of claim 17, wherein the first valve chamber is in fluid communication with the second valve chamber.

21. The valve assembly of claim 20, wherein the first valve chamber comprises a fluid inlet and the second valve chamber comprises a fluid outlet.

22. The valve assembly of claim 21, wherein the first valve chamber further comprises a pilot light feed.

23. The valve assembly of claim 17, wherein the first valve member further comprises a first shaft extending to a first proof of closure switch.

24. The valve assembly of claim 17, wherein the second valve member further comprises a second shaft extending to a second proof of closure switch.