초록 ▼

A method for minimizing or eliminating the audible flow noise which accompanies the short initial period of compressor operation in an air-conditioning or refrigeration system which system utilizes an electrically-actuated expansion valve. The method is comprised of two steps used singly or in combi

A method for minimizing or eliminating the audible flow noise which accompanies the short initial period of compressor operation in an air-conditioning or refrigeration system which system utilizes an electrically-actuated expansion valve. The method is comprised of two steps used singly or in combination, said steps being (a) maintaining said valve in a closed or non-operative mode for a short period of time after the compressor is energized; and, (b) pulsing said valve at a higher-than-normal frequency for a short period of time commencing when the compressor is energized or shortly thereafter.

대표청구항 ▼

A method of controlling refrigerant flow in a refrigeration system of the type having a compressor electrically energized for pumping refrigerant in a closed loop through an exothermic heat exchanger for condensing, through an electrically operated expansion valve for expansion and through an endoth

A method of controlling refrigerant flow in a refrigeration system of the type having a compressor electrically energized for pumping refrigerant in a closed loop through an exothermic heat exchanger for condensing, through an electrically operated expansion valve for expansion and through an endothermic heat exchanger for cooling a compartment and returning to the compressor comprising the steps of: (a) initially energizing the compressor and pulsing said valve at a relatively high initial frequency; (b) maintaining said relatively high frequency pulsing for a predetermined time interval; and, (c) decreasing the frequency of said pulsing to a level less than two-thirds of said initial frequency.