VAPOR-COMPRESSION REFRIGERATING PLANT FOR TRANSPORT FACILITIES WITH INTERNAL COMBUSTION ENGINES Russian patent published in 2006 - IPC F25B1/53 

FIELD: mechanical engineering; refrigerating units of transport facilities proper and cargo carried in them.

SUBSTANCE: proposed refrigerating plant has compressor, condenser, throttling unit and one or several evaporators. Used as working medium is liquid whose boiling point exceeds ambient temperature, for example water, mixture of water and ethyl alcohol or low-boiling organic fluids. Proposed plant is equipped with turbo-compressor. Working pressure inside system is maintained below atmospheric pressure. Rarefaction is maintained by periodic discharge of working medium vapor from condenser by means of additional compressor or vacuum pump. Working medium vapor discharged from condenser is fed to suction air branch pipe of engine. Entrainment separator is mounted between evaporators and compressor. Check valve is fitted between compressor and condenser. Vacuum hoses are used as parts of piping.

EFFECT: avoidance of penetration of ecologically toxic refrigerants into surrounding atmosphere; possibility of connecting many evaporators.