REFRIGERATORS WITH A NON-AZEOTROPIC MIXTURES OF HYDROCARBONS REFRIGERANTS

摘要

A refrigerant circuit using a non-azeotropic mixture of hydrocarbons refrigerants comprises a compressor, a condenser, an expansion device, a first evaporator downstream the expansion device, a second evaporator downstream the first evaporator, a first heat exchanger to cause heat exchange between refrigerant downstream the condenser and upstream the first evaporator, on one side, and refrigerant downstream the first evaporator and upstream the second evaporator, on the other side, and a second heat exchanger to cause heat exchange between refrigerant downstream the condenser and upstream the first heat exchanger, on one side, and refrigerant downstream the second evaporator and upstream the compressor, on the other side, the expansion device having a capillary tube as part of both heat exchangers as a side of exchangers, the capillary tube being parallel to and in contact with a tube of the circuit or it is wrapped around such tube.

主权项

1. A refrigerant circuit using a non-azeotropic mixture of refrigerants, the circuit comprising:
a compressor; a condenser; an expansion device; a first evaporator downstream the expansion device; a second evaporator downstream the first evaporator; a first heat exchanger to cause heat exchange between refrigerant downstream the condenser and upstream the first evaporator on a first side, and refrigerant downstream the first evaporator and upstream the second evaporator on a second side; and a second heat exchanger to cause heat exchange between refrigerant downstream the condenser and upstream the first heat exchanger on a first side, and refrigerant downstream the second evaporator and upstream the compressor on a second side, wherein the expansion device comprises a capillary tube adapted to act as the first side of both heat exchangers.