VARIABLE CAPACITY SWASH PLATE TYPE COMPRESSOR

摘要

A variable capacity swash plate type refrigerant compressor having a plurality of pistons each including a cylindrical hollow main body reciprocated in a cylinder bore of a cylinder block, and an engaging portion engaged with a swash plate. The cylindrical hollow main body of the piston is provided with at least one first through-bore for providing a communication between the interior of the main body and the cylinder bore, and at least one second through-bore for providing a communication between the interior of the piston main body and a crank chamber of the compressor to thus enable the piston to have a thin and light weight wall construction, and to have a sufficient durability against large pressure changes applied to the piston.