Patent ID: 6385981
Filing Date: 2002-05-14
Classification: F04C,F25B

Abstract:
A refrigeration system comprising:(a) a compressor unit including a housing, a suction side and a discharge side, an economizer port located at a point after the compression chambers have been closed for compression; a variable flow valve associated with said economizer port, which in an opened position provides communication between said compression chamber and an external outlet of said economizer port over said economizer port; a body of said valve being a part of a body of said housing and a seat of said valve in a closed position is shaped to be contiguous with internal portion of said housing; (b) a closed main circuit including said compressor, a condenser unit, an expansion device, an evaporator unit, connecting piping and appropriate refrigeration control; (c) a bypass circuit between said external outlet and said suction side; and (d) an electrical circuit including said variable flow valve, a control system, and a transducer reading parameters associated with a system capacity demand.