Piston assembly for a refrigerant compressor

Details Piston assembly for a refrigerant compressor Piston assembly for a refrigerant compressor

F - Mech Eng,Light,Heat,Weapons

04

B

277/32, 230/50,

F04B 39/04 (2006.01) F04B 27/08 (2006.01)

Patent

CA 1254087

PISTON ASSEMBLY FOR A REFRIGERANT COMPRESSOR ABSTRACT OF THE DISCLOSURE A piston assembly for a reciprocating piston type compressor includes a piston slidably disposed within aluminum alloy cylinders. The pistons have two annular grooves provided toward opposite ends on their outer peripheral surfaces. A conical shaped piston ring formed of resin and having an outer diameter larger than the outer diameter of the piston is disposed in each groove. The conical shaped piston ring creates a gap between the piston and cylinder to prevent direct contact between the piston and cylinder to thereby avoid abnormal wearing while effectively maintaining the flow of lubricating oil from the cylindrical chamber to the crank chamber.

470870

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