FIELD: machine engineering.
SUBSTANCE: refrigeration unit includes a refrigerant circuit which includes a refrigeration compressor, a condenser, an expansion device and an evaporator, and the refrigerant compressor has a drive motor which is speed-adjustable by the electronic engine control system and a refrigerant flow penetrated cooling branch of the control system, which branches off from the refrigerant circuit between the condenser and the expansion device, and is carried to the refrigerant compressor nozzle and which contains the heat dissipator. To prevent operational failures of the engine control system, adjustment is proposed of the cooling branch of the control system, which during refrigerant compressor operation, controls the heat dissipator temperature so that the lowest refrigerant boiling point in the heat dissipator is above the freezing temperature and below the refrigerant boiling temperature in the condenser.
EFFECT: improved refrigeration unit.
42 cl, 7 dwg
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