Patent ID: 6295821
Filing Date: 2001-10-02
Classification: F04C,F25B

Abstract:
A method for controlling high discharge gas temperature in a compressor of a refrigeration system having connected in closed loop with a compressor, a condenser and an evaporator, the compressor having a discharge chamber therein, the method comprising the steps of:providing an injection valve;providing a set of fluid injection pills having various orifice sizes therethrough;operatively coupling at least one of the fluid injection pills to the injection valve;sensing the temperature of discharge gaseous refrigerant from the compressor;conducting liquid refrigerant from the condenser to the suction line of the compressor via the injection valve and through the at least one fluid injection pill; andcontrolling the amount of liquid refrigerant injected into the suction line by a controller with the injection valve operatively connected to the suction line, based on the temperature of the discharge gaseous refrigerant.