Patent ID: 9086232
Filing Date: 2015-07-21
Classification: F25B

Abstract:
1. A refrigeration system comprising: a condenser; an evaporator; a temperature sensor structured to detect a temperature of the evaporator; a compressor arranged upstream from the condenser and downstream from the evaporator; a thermostatic expansion valve coupled between the condenser and the evaporator, and separated from the compressor by the evaporator, and arranged downstream from the condenser and upstream from the evaporator; a pressure sensor configured to sense a high-pressure of the refrigeration system, the pressure sensor arranged downstream from the condenser and upstream from the evaporator; a first refrigerant path arranged downstream from the condenser and upstream from the evaporator; a selectively activated assist refrigerant path arranged downstream from the condenser and upstream from the evaporator, the assist refrigerant path including: a controller configured to open the control valve to cause refrigerant to flow through the assist refrigerant path when the sensed pressure falls below a threshold pressure and the sensed temperature is above a threshold temperature.