초록 ▼

A refrigeration unit using HFC group coolant, having an enhanced cooling capacity so that the performance and the performance coefficient thereof can be enhanced, and the operation thereof can be stably made, the refrigeration unit having a refrigerating cycle in which a compressor 1, a condenser, a

A refrigeration unit using HFC group coolant, having an enhanced cooling capacity so that the performance and the performance coefficient thereof can be enhanced, and the operation thereof can be stably made, the refrigeration unit having a refrigerating cycle in which a compressor 1, a condenser, a expansion valve and an evaporator, the expansion valve are connected in series in the mentioned order, d comprises HFC group coolant, and a subcooler located between the condenser and the evaporator, wherein the HFC group coolant is turned into liquid coolant in the subcooler, and is then branched into a main liquid stream and a substream which super-cools the main liquid stream through a super-cooling expansion valve, and is led into the intermediate stage part of the compressor.

대표청구항 ▼

[ What is claimed is:] [1.] A refrigeration unit having a refrigerating cycle in which a compressor, a condenser, an expansion valve and an evaporator are connected in series, in the mentioned order, comprising:HFC group coolant circulating through said refrigerating cycle; anda subcooler having an

[ What is claimed is:] [1.] A refrigeration unit having a refrigerating cycle in which a compressor, a condenser, an expansion valve and an evaporator are connected in series, in the mentioned order, comprising:HFC group coolant circulating through said refrigerating cycle; anda subcooler having an inlet side and an outlet side, said subcooler being connected between said condenser and said evaporator;wherein said HFC group coolant is turned into a liquid coolant in said condenser, and is then branched on the outlet side of said subcooler into a main stream and a substream for super-cooling the main stream by way of a super-cooling expansion valve, which is led into an intermediate stage part of said compressor.