PUMP/COMPRESSOR VALVE SEAT
First Claim
1. A pump for pumping fluids, the pump including:
- a pump head having at least one port, a valve seat having a valve face, and a flow passage extending in an axial direction through the valve seat to the at least one port;
a valve having a sealing portion on a side thereof for abutting the valve face, the valve being movable between an open position allowing fluid flow through the flow passage and a closed position preventing fluid flow through the flow passage;
an electric motor coupled to the pump head for effecting fluid flow to cause the valve to move from the closed position to the open position to allow fluid to flow to the at least one port; and
means for providing a leak flow path for fluid when the valve is in the closed position to reduce pressure build up on the side of the valve.
2 Assignments
0 Petitions
Accused Products
Abstract
Valve assembly for a pump, the valve assembly including: a valve seat having a valve face (60), a flexible valve having a sealing portion for abutting the valve face (60), and at least a fluid pathway (66, 68, 70) from an interior of the valve seat to an exterior of the valve seat that serves as a leak flow path for fluid when the valve is in the closed position to reduce pressure build up on the valve. In this way, the vacuum inside the pump can be released when the value is in the closed position and the pump is stopped, thereby allowing the pump to start/restart due to reduced pressure build up on a side of the valve abutting the valve face. A pump or compressor including such a valve assembly is also disclosed.
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Citations
38 Claims
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1. A pump for pumping fluids, the pump including:
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a pump head having at least one port, a valve seat having a valve face, and a flow passage extending in an axial direction through the valve seat to the at least one port; a valve having a sealing portion on a side thereof for abutting the valve face, the valve being movable between an open position allowing fluid flow through the flow passage and a closed position preventing fluid flow through the flow passage; an electric motor coupled to the pump head for effecting fluid flow to cause the valve to move from the closed position to the open position to allow fluid to flow to the at least one port; and means for providing a leak flow path for fluid when the valve is in the closed position to reduce pressure build up on the side of the valve. - View Dependent Claims (2, 3, 4, 8, 10, 11, 12, 14, 15, 16, 17, 18, 28)
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5. (canceled)
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6. (canceled)
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7. (canceled)
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9. (canceled)
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13. (canceled)
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19. A valve assembly for a pump, the valve assembly including:
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a valve seat including a body having a valve face, a flow passage extending in an axial direction through the body, and at least one channel in the body that forms a fluid pathway from an interior of the valve seat to an exterior of the valve seat; and a valve having a sealing portion on a side thereof for abutting the valve face, the valve being movable between an open position allowing fluid flow through the valve seat and a closed position preventing fluid flow through the valve seat, wherein the fluid pathway is a leak flow path for fluid when the valve is in the closed position to reduce pressure build up on the side of the valve. - View Dependent Claims (20, 21, 22, 23)
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24. (canceled)
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25. (canceled)
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26. (canceled)
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27. (canceled)
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29. A valve seat for a pump or compressor, the valve seat including:
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a body having a valve face configured to abut a sealing surface of a valve; a flow passage extending in an axial direction through the body; at least one channel in the body that forms a fluid pathway from an interior of the body to an exterior of the body in a direction perpendicular to the axial direction; and at least one raised surface adjacent the at least one channel and axially protruding from the body, wherein the fluid pathway is a leak flow path for fluid when the valve is in a closed position, and wherein the at least one raised surface prevents the valve from conforming to the at least one channel.
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30. (canceled)
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31. (canceled)
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32. (canceled)
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33. (canceled)
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34. (canceled)
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35. (canceled)
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36. (canceled)
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37. (canceled)
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38. (canceled)
Specification