Scroll type compressor with variable displacement mechanism.

摘要

A scroll type compressor with a variable displacement mechanism is disclosed and includes a housing having an inlet port and an outlet port. A variable displacement mechanism controls an opening and closing of a communication path communicating the suction chamber to the pair of intermediately located sealed spaces. The variable displacement mechanism includes a cylinder a part of which is defined within the communication path, a piston member which is slidably disposed within the cylinder and a conduit which permanently links the discharge chamber to the cylinder so as to introduce the discharge pressure to one end surface of the cylinder opposite to the part of cylinder. A location of the piston member within the cylinder is varied in response to changes in the discharge pressure so as to control the opening and closing of the communication path, thereby varying the displacement of the compressor. <IMAGE>