Refrigeration compressor having a contoured piston

Details Refrigeration compressor having a contoured piston Refrigeration compressor having a contoured piston

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 39/00 (2006.01)

Patent

CA 2069208

A small hermetic refrigeration compressor of the single reciprocating piston-type has flat valve plate extend- ing across the open end of the cylinder with a discharge port extending through the valve plate off the center line of the cylinder bore. The piston has a generally flat end face with a recess at least partially in alignment with the discharge port, to allow improved flow of gases to the discharge port with a decreased clearance volume. Further reduction the clearance volume can be obtained by placing a projecting post on the end face the piston in line with the discharge port to partially fill the discharge port at top dead center.

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