Refrigerating system which can favorably use as a refrigerant, a fluid smaller in specific volume than a general refrigerant
AssigneeSanden Corporation
InventorKiyokazu Yamamoto
Life of this patent
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Abstract
In a refrigerating system using a given refrigerant, a compressor (1) contains lubricating oil and compresses the given refrigerant into a supercritical state having pressure higher than the critical pressure of the given refrigerant. In this event, the compressor discharges a compressed refrigerant of the supercritical state together with the lubricating oil. The compressed refrigerant is separated from the lubricating oil by an oil separator (2) and thereafter cooled in a radiator (3) into a cooled refrigerant. After being decompressed in an expander (4) and evaporated in an evaporator (5), the cooled refrigerant is supplied as the given refrigerant to the compressor.
Claims10
A refrigerating system using a given refrigerant and comprising:
- a compressor for compressing said given refrigerant into a superaritical state having pressure higher than critical pressure of said given refrigerant, said compressor containing lubricating oil which is dissolved in said given refrigerant, and discharging a compressed refrigerant of the supercritical state and said lubricating oil;
- an oil separator connected to said compressor and supplied with said compressed refrigerant for separating said lubricating oil from said compressed refrigerant to produce an oil-separated refrigerant;
- a radiator connected to said oil separator for cooling said oil-separated refrigerant into a cooled refrigerant;
- expanding means connected to said radiator for decompressing said cooled refrigerant into a decompressed refrigerant having a pressure lower than said critical pressure;
- and
- an evaporator connected to said expanding means and said compressor for evaporating said decompressed refrigerant into an evaporated refrigerant which is supplied as said given refrigerant to said compressor.
Dependencies are inferred from the claim text.