Refrigerated Case
AssigneeCarrier Corporation
InventorsZhong Gu, LianFu Zhu, Zhiwei He
Life of this patent
Estimating the term…
Abstract
In a self-contained plug-in display cabinet system (100), the evaporation temperature of the evaporator (25) is between −4° C. and 2° C., and with the adaption of constant pre-cooling means (22), the high-temperature and high-pressure refrigerant gas discharged by the compressor (21) is pre-cooled allowing use of a low system pressure ratio and, thus, a high temperature compressor (21). Furthermore, there may be no need for the evaporator to be defrosted, which overcomes the drawbacks of the currently available display cabinet systems that the refrigeration cycles have to be interrupted for defrosting the evaporator, thereby having further energy saving and being advantageous in keeping the temperature of the food stable.
Claims15
A self contained plug in display cabinet system (100), characterized in that the system comprises:
- a display cabinet (110) containing a product display area (140) and a compartment (120, 130) separated from the display area;
- an airflow circulation channel (112, 114, 116) connecting the airflow between the display area and the compartment of the display cabinet;
- and
- a refrigeration system (20) disposed in the compartment of the display cabinet and comprising an air-conditioning compressor (21), a condenser (23), a throttling mechanism (24), an evaporator (25), and pipelines (26) connecting these parts, wherein the evaporation temperature of the evaporator is −4° C. to 2° C.
A refrigerating system, characterized in that it comprises an air-conditioning compressor, a condenser, a throttling mechanism, an evaporator and pipelines connecting the parts, wherein the evaporation temperature of the evaporator is −4 to 2° C.
A method for operating a refrigerated display cabinet system, the system comprising:
- a display cabinet (110) containing a product display area (140);
- and
- a refrigeration system (20) comprising a compressor (21), a heat rejection heat exchanger (23), an expansion device (24), and an evaporator (25),
- the method comprising:
- pre-cooling refrigerant flowing from the compressor to the condenser via condensate collected from the evaporator, the pre-cooling effective to maintain an evaporation temperature of the evaporator of −4° C. to 2° C.
Dependencies are inferred from the claim text.