Carrier Corporation

Thomas J Benedict

Jason D Scarcella

Martin O Johnsen

A method () of de-icing a return air intake of a transport refrigeration system is provided. The method comprises using a controller for controlling the refrigeration system; determining () when de-icing mode is required; deactivating () an evaporator and an evaporator fan of the refrigeration system when de-icing mode is required; activating () a heater when de-icing mode is required; adjusting () the temperature of the heater to a selected temperature; deactivating () the heater when the heater has reached the selected temperature; and permitting () the refrigeration system to remain deactivated for a selected time period.

Return air intake grille de-icing method

A refrigeration system includes a refrigerant vapor compression unit including a compressor and one or more current sensors to determine a total system current draw. One or more pressure sensors are positioned to determine a refrigerant pressure in the refrigerant vapor compression unit. A controller compares the current draw on the system and the refrigerant pressure to selected acceptable ranges and determines a level of refrigerant charge in the refrigerant vapor compression unit. A method of determining a level of refrigerant charge in a refrigeration system includes measuring a refrigerant pressure in the refrigeration system and sensing a current draw of the refrigeration system. A level of refrigerant charge in the refrigeration system is calculated from the refrigerant pressure and the current draw.

Growing community of inventors

Syracuse, NY, United States of America

Thomas J Benedict