Refrigeration system
AssigneeCarrier Corporation
InventorsCamille Vincensini, Nicolas Fonte, Yvan Alquier
Life of this patent
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Abstract
Refrigeration systems are described. The systems include a refrigeration circuit having a compression device, a heat rejecting heat exchanger, an expansion device, and a heat absorbing heat exchanger. The refrigeration systems include one or more sensors configured to measure a pressure associated with the heat rejecting heat exchanger, and a controller configured to compare the pressure measured by the one or more sensors to a predicted pressure, and to control the expansion device on the basis of the comparison.
Claims19
A refrigeration system comprising:
- a refrigeration circuit comprising a compression device, a heat rejecting heat exchanger, an expansion device, and a heat absorbing heat exchanger;
- one or more sensors configured to measure a pressure associated with the heat rejecting heat exchanger;
- and
- a controller configured to compare the pressure measured by the one or more sensors to a predicted pressure, and to control the expansion device on the basis of the comparison;
- wherein the comparison is repeated during operation of the refrigeration system;
- wherein the expansion device comprises an expansion valve, and wherein the controller is configured to control a degree of opening of the expansion valve whilst the expansion valve is open, on the basis of the comparison.
A method of operating a refrigeration system that comprises a refrigeration circuit comprising a compression device, a heat rejecting heat exchanger, an expansion device, and a heat absorbing heat exchanger, the method comprising:
- measuring a pressure associated with the heat rejecting heat exchanger;
- comparing the measured pressure to a predicted pressure;
- controlling the expansion device on the basis of the comparison;
- and
- repeating the comparison during operation of the refrigeration system;
- wherein the expansion device comprises an expansion valve, and wherein controlling the expansion device on the basis of the comparison comprises temporarily increasing a degree of opening of the expansion valve whilst the expansion valve is open, when the measured pressure is greater than or equal to the predicted pressure.
Dependencies are inferred from the claim text.