FIELD: compressors.
SUBSTANCE: invention relates to an oil-free compressor. Compressor 1 contains compressor element (2), including case (5), inside which covered and covering screw rotors (6a) and (6b), respectively, are installed. Shaft (8) of rotor (6b) passes into driven shaft (9). Engine (3) has drive shaft (13). There is transmission (4) between shaft (13) of engine (3) and shaft (9) of element (2). Transmission (4) contains case (10) and at least driven gear (11) mounted on shaft (9) and drive gear (14) mounted on shaft (13). In case (10), there is outlet (20) located in the radial extension of one of gears (11, 14) and connected to discharge pipe (22). Pipe (22) passes in the continuation of the air flow created by one of gears (11, 14), and it is connected to oil tank (15) with filter element (16).
EFFECT: invention is aimed at improving the efficiency of the compressor.
3 cl, 3 dwg
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