PISTON ASSEMBLY AND METHOD FOR REDUCING THE TEMPERATURE OF ACOMPRESSOR CUP SEAL

摘要

A piston assembly (A) comprising a piston slave (18) having an interior wall , a piston (14) carried in the piston sleeve, a cup seal (16) carried by the piston which engages the interior wall of the piston sleeve, and a valve plate (12) matingly adapted to receive the piston sleeve. A firm thermal-insulating barrier (20) is disposed between the valve plate and the piston sleeve for reducing the heat flow from the valve plate to the piston sleeve.