Method of manufacturing valve system for capacity control of a s

Details Method of manufacturing valve system for capacity control of a s Method of manufacturing valve system for capacity control of a s

1998-09-22

1999-08-24

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2988802, 4182012, B23P 1500

Patent

active

RE0362743

ABSTRACT:
capacity.!. screw compressor is set forth including a valve housing, a piston reciprocally received within the valve housing, a shaft having a first end connected to the piston and a second end extending from the housing. The valve further includes a valve element connected to the second end of the shaft having a valve surface exposed to the compression chamber and a reciprocation mechanism for reciprocating the piston within the housing. The reciprocation mechanism includes a first pressure passage communicating with the housing adjacent a side of the piston, and a second pressure passage communicating with the housing adjacent and opposed side of the piston, wherein the valve surface is positively displaced toward compressor in response to the application of fluid pressure to at least the screw compressor.!.. Further, the lift valve is manufactured integral capacity.!. screw compressor. This manufacturing process includes securing compressor in an operating position. Once secured to the housing, the shaft and consequently the valve element is fully extended from the valve housing and maintained in such position thus simultaneously machining an inner surface of the compression chamber and the valve surface such that the valve surface forms a continuation of the inner wall of the operating at full capacity.

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