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US 5,311,902 AGranted
Reciprocating compressor valve
OwnerNorbert W. Overfieldinventor
Life of this patent
Estimating the term…
Abstract
A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is described.
Claims10
A positive displacement compressor means having a pressure actuated suction and/or discharge valve means, which comprises:
- (a) a valve seat means having a passage for fluid flow;
- (b) a flow control means having a blocking face that is movable towards the fluid passage to block the passage when the valve means is in a closed position and having a first sealing surface that is not disposed in the fluid passage when the fluid control means is in the closed position;
- (c) housing means for holding the flow control means in alignment with the seat means;
- (d) biasing means extending from the housing means and serving to urge the flow control means toward the seat means;
- and
- (e) a seal means held in alignment with the flow control means by the housing means and comprising a second sealing surface provided in a sliding and telescoping relationship with the first sealing surface of the flow control means, wherein the second sealing surface of the seal means is movable into a surrounding and sealing engagement with the first sealing surface of the flow control means when the valve means is moved into the closed position.
3 more elements
A positive displacement compressor means having a pressure actuated suction and/or discharge valve means, which comprises:
- (a) a valve seat means having passage for fluid flow;
- (b) a flow control means having a blocking face that is movable towards the fluid passage to block the passage when the valve means is in a closed position and having an outer surface that is not disposed in the fluid passage when the flow control means is in the closed position;
- (c) a spring means serving to urge the flow control means towards the closed position;
- and
- (d) a seal means held in alignment with the flow control means by a housing means and comprising a sealing surface provided in a sliding and telescoping relationship with the outer surface of the flow control means, wherein the sealing surface is movable into a surrounding and sealing engagement with the outer surface thereof when the valve means is moved into the fully closed position and wherein immediately prior to and at the instant of valve means opening, the flow control means has an exposed area on its upstream side subject to upstream pressure and another exposed area on its downstream side subject to downstream pressure, said areas being equal.
2 more elements
A positive displacement compressor means having a pressure actuated suction and/or discharge valve means, which comprises:
- (a) a seat means having a passage for fluid flow;
- (b) a flow control means for the fluid passage;
- and
- (c) a seal means having a frusto-conical shape and held in alignment with the flow control means by a housing means, the sealing means providing a sealing engagement between the flow control means with the valve means in a closed position and wherein the flow control means has an area on its upstream side subject to upstream pressure and another area on its downstream side exposed to downstream pressure, said areas being substantially equal prior to valve opening.
1 more element
Dependencies are inferred from the claim text.