DEVICE FOR USE WITH REFRIGERANT FLUID FOR INCREASING THERMODYNAMIC PERFORMANCE Russian patent published in 2019 - IPC F25B30/02 F25B9/06 F25B31/00 

FIELD: combined systems for heating and cooling.

SUBSTANCE: invention relates to heat pumps. In the method, a closed circuit is designed to contain a refrigerant fluid and a lubricant mixed with the refrigerant fluid. Said closed circuit contains fluid compressor (1) and a fluid return circuit for returning fluid to the compressor. Said compressor is located in a closed circuit between the inlet and outlet of the fluid. Said fluid return circuit is in the closed circuit in addition to the compressor between the fluid outlet and the fluid inlet and contains condenser (2), expander (3) and evaporator (4). Said fluid return circuit contains a first pipe passing between the fluid outlet and the condenser, a second pipe passing between the condenser and the expander, a third pipe passing between the expander and the evaporator, and a fourth pipe extending between the evaporator and the fluid inlet. Said closed circuit contains first bulge (5) of the pipe of the return circuit, located in the circuit in series and containing tubes (50) located in the circuit in parallel, and a second bulge (6) of pipe of the return circuit, located in the circuit in series.

EFFECT: increased thermodynamic efficiency of the heat pump by maintaining the mixture of refrigerant and oil in the form of an emulsion, which contributes to an increase in heat transfer.

17 cl, 1 dwg