REFRIGERATING CIRCUIT Russian patent published in 2013 - IPC F25B39/00 

FIELD: heating.

SUBSTANCE: refrigerating circuit (3) for household appliances comprises the first heat exchanger (5) or a condenser, which is in flowing communication with a compressor (4) to ensure cooling and further condensation of cooling fluid passing through them, and the second heat exchanger (7) or an evaporator, which is in flowing communication with the first heat exchanger (5) via a circuit with a special device (6), made as capable to reduce pressure of the cooling fluid in the space (2) designed for cooling. The second heat exchanger (7) provides for evaporation of cooling fluid, heat absorption, cooling the space (2), and return of the cooling fluid via a tube (17) to the compressor (4). At least one of heat exchangers (5, 7) comprises a plastic tube (9), at least a part of which has such corrugated profile that it transfers its flexibility to the entire tube and/or increases heat-exchange surface. The tube (9) comprises at least two layers (S1, S2) imposed one onto the other, besides, preferably both layers are made of plastic. The first layer (S1) of the material is impermeable for a cooling fluid and/or non-condensed gases, and the second layer (S2) is impermeable for moisture.

EFFECT: using the invention will make it possible to ensure high flexibility of a cooling device in various directions and high tightness.

16 cl, 27 dwg, 1 tbl