Patent ID: 6321550
Filing Date: 2001-11-27
Classification: F25B,F25D

Abstract:
A transport refrigeration system comprising:a compressor having a discharge port and a suction port and further having at least one electric compressor drive motor disposed therein for running the compressor;a condenser heat exchanger unit operatively coupled to said compressor discharge port;an evaporator heat exchanger unit operatively coupled to said compressor suction port;at least one fan assembly having at least one electric fan motor configured to provide air flow over one of said heat exchanger units; andan integrally mounted unitary engine driven synchronous generator assembly configured to selectively produce at least one A.C. voltage at one or more frequencies;wherein said at least one compressor drive motor and said at least one fan motor are configured to be directly coupled to said generator and to operate at a voltage and frequency produced by said synchronous generator;means for unloading at least a portion of said compressors compressing capability;means for monitoring the refrigerant pressure at said compressor's suction port; andmeans for selectively energizing said means for unloading during predetermined unacceptably high refrigerant pressure at such port.