REFRIGERATING UNIT Russian patent published in 2018 - IPC F25B1/10 

FIELD: refrigerating equipment.

SUBSTANCE: invention discloses a refrigerating unit including: first compressor unit (101), chamber heat exchanger (3) and external heat exchanger (2) connected in series, first compressor unit (101) including two compression chambers connected in series; first throttle device (401) and second throttling device (402) are connected in series and located between the outlet of chamber heat exchanger (3) and the inlet of external heat exchanger (2); and air supply device (5) disposed between first throttle device (401) and second throttling device (402), inlet of the air supply device (5) communicates with first throttling device (401), first outlet of the air supply device (5) communicates with the air supply port of first compressor unit (101), and a second outlet of device (5) communicates with second throttling device (402). Refrigerating unit further includes second compressor unit (102). Air inlet (B) of second compressor unit (102) communicates with the outlet of external heat exchanger (2). Outlet (E) of second compressor unit (102) communicates with the air supply opening (C) of first compressor unit (101) and outlet port (D) of the compressor unit (101) by means of three-way valve (10), respectively.

EFFECT: invention is aimed at increasing the capacity of the refrigerating unit.

13 cl, 10 dwg