Compressor with axially balanced shaft

Details Compressor with axially balanced shaft Compressor with axially balanced shaft

F - Mech Eng,Light,Heat,Weapons

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F04C 18/04 (2006.01) F04C 23/00 (2006.01) F04C 29/00 (2006.01) F04C 29/02 (2006.01) F25B 31/02 (2006.01)

Patent

CA 1295303

PATENT APPLICATION Title COMPRESSOR WITH AXIALLY BALANCED SHAFT Inventor Peter A. Kotlarek Delmar R. Riffe Abstract In a compressor of the hermetic, scroll-type, a motor engaging drive shaft having a net axial thrust load determined by the pressure of compressed fluid acting upon the opposing ends of the shaft. In the preferred embodiment, the shaft includes a first end in the discharge pressure portion providing a first plan view area and a second end in the suction pressure portion having a circular, eccentrically disposed cavity with a second plan view area. The shaft has an axial bore for communicating refrigerant at discharge pressure through the shaft between the respective ends such that refrigerant at discharge pressure acts in opposite directions upon both of the respective plan view areas to balance the net thrust load of the shaft.

597433

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