FIELD: engines and pumps.
SUBSTANCE: invention refers to compressor air unit (1), namely for submerged operation. Stator (16) of electric motor (2) is connected to separate cooling device (40). Cooling device (40) has the possibility of natural circulation in it in operating conditions of cooling medium and it includes condenser (55) which at least by means of one supply line (53) and at least one drain line (54) is connected to cooled stator (16). Cooling device (40) has the possibility of cooling medium circulation between condenser (55), drain line (54), stator (16) and supply line (53).
EFFECT: development of cooling device for electric motor stator, which on the one hand would ensure high operating reliability, and on the other hand, it would not require material exchange with the environment during operation.
13 cl, 2 dwg
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