F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
230/37, 230/90
F04D 17/06 (2006.01) F04C 23/00 (2006.01) F04C 27/00 (2006.01)
Patent
CA 1222734
Title SCROLL MACHINE USING DISCHARGE PRESSURE FOR AXIAL SEALING Inventors James C. Tischer Robert E. Utter Abstract A scroll compressor in which a fluid compressed by the ma- chine is applied to one side of an orbiting scroll plate to provide an axial sealing force directed toward an opposing stationary scroll plate. Intermeshed involute wrap elements on facing surfaces of the two scroll plates define pockets in which the fluid is compressed as a motor drives one of the plates in an orbital motion relative to the other. Both the motor and scroll plates are enclosed in a hermetic shell. The volume enclosed by the shell is divided by the driven scroll plate and an internal supporting frame into one part that is at suction pressure and another part at discharge pressure. A seal extending from the frame abuts the back side of the driven scroll plate and defines the relative areas of that plate which are exposed to suction and discharge pressure. The net force resulting from these pressures acts on the orbiting plate, biasing it toward the stationary plate to provide axial sealing between the involute wrap elements and the scroll plates.
471844
Tischer James C.
Utter Robert E.
American Standard International Inc.
Fetherstonhaugh & Co.
Trane Canada Inc.
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