In-line incrementally manually adjustable rotary expansion valve
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United States of America Patent
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-
Apr 4, 1995
Issued Date -
N/A
app pub date -
Aug 18, 1994
filing date -
Sep 24, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A variable flow rate expansion valve designed for in-line installation in a fluid conveying conduit such as between the high pressure condenser and lower pressure evaporator of a refrigeration system includes an integrally defined restrictor disc and a closure disc for controlling the flow of fluid through the valve. The restrictor disc has a first set of flow apertures and the closure disc a second set of flow apertures. The closure disc is rotatably coupled to the fixed restrictor device in a plane parallel to the plane of the restrictor disc and perpendicular to refrigerant flow. A manual, calibrated, incrementally adjustable actuator permits the positioning of the closure disc with respect to the restrictor disc so as to permit the flow of refrigerant through the valve to be manually adjusted, by a chnage in the registry of the apertures in the closure and restrictor discs, in accordance with varying operating conditions and requirements.
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