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US 5,415,008 AGranted
Refrigerant flow rate control based on suction line temperature
AssigneeGeneral Electric Company
InventorWarren F. Bessler
Life of this patent
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AssigneeGeneral Electric Company
InventorWarren F. Bessler
Estimating the term…
Pulse width modulation is used to control the flow rate through a solenoid expansion valve in a refrigeration system. A device for sensing suction line temperature is provided, and a controller is included for controlling the duty cycle of the pulse width modulated solenoid valve. The controller receives input from the suction line temperature sensing device as a basis for controlling the duty cycle. The suction line temperature sensing device may be a temperature sensor disposed on the suction line at the midpoint of the heat exchanger between the suction line and the liquid line. Alternatively, the suction line temperature sensing device may include a first temperature sensor disposed on the liquid line at one end of the heat exchanger and a second temperature sensor disposed on the liquid line at another end of the heat exchanger.
A refrigerator system for cooling at least one compartment, said refrigerator system comprising:
A refrigerator system comprising:
A method of controlling refrigerant flow rate in a refrigeration system having a liquid line, a suction line and a pulse width modulated solenoid valve, said liquid line and said suction line being in thermal contact to form a heat exchanger therebetween, said method comprising the steps of:
Dependencies are inferred from the claim text.