REFRIGERATOR AND METHOD FOR OPERATION OF SUCH REFRIGERATOR Russian patent published in 2018 - IPC F25B11/02 

FIELD: refrigerating equipment.

SUBSTANCE: refrigerator includes a cooling part for cooling the object through heat exchange with the refrigerant, an expander-compressor and a refrigerant circulation line for circulating the refrigerant through the compressor, the expander and the cooling part. Said compressor includes a lower stage compressor, an intermediate stage compressor and an upper stage compressor located in series in the refrigerant circulation line. Above expander-compressor includes an intermediate stage compressor, an expander for adiabatic expansion and cooling of the refrigerant discharged from the upper stage compressor, and a first engine comprising an output shaft connected to an intermediate stage compressor and to the expander. Further, a non-contact bearing is located between the intermediate stage compressor and the expander to maintain the output shaft of the first engine without contact with the said output shaft. Also, the refrigerator is equipped with a housing to accommodate the intermediate stage compressor, the expander and the contactless bearing. Additionally, the refrigerator comprises first, second and third heat exchangers arranged parallel to each other in the longitudinal direction.

EFFECT: technical result of the invention is to increase the cooling capacity of the refrigerator.

14 cl, 7 dwg