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|1. (WO2018083579) DRIVE FOR A COMPRESSOR ELEMENT AND WATER INJECTED COMPRESSOR DEVICE PROVIDED WITH SUCH A DRIVE|
|Applicants:||ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
|Inventors:||COLMAN, Luc Lodewijk Anna
VRIENS, Viktor Maurits
|Title:||DRIVE FOR A COMPRESSOR ELEMENT AND WATER INJECTED COMPRESSOR DEVICE PROVIDED WITH SUCH A DRIVE|
Actuator for a compressor element (3), said actuator (2) comprising an electrical motor (12) with a motor casing (13) which defines a motor chamber (14) in which a motor rotor (15) is positioned rotatably with the help of one or more motor bearings (16) in relation to a motor stator (19), whereby the motor stator (19) is built of laminations (20) around which windings (21) are attached and whereby the motor rotor (15) is built of a shaft (17) with laminations (18), whereby the actuator (2) is further equipped with a cooling circuit (24) for a coolant characterized in that the coolant is water, that the motor bearings (16) are water-lubricated, that the shaft (17) on the motor rotor (15) is made from stainless steel, that the aforementioned windings (21) are embedded in an epoxy resin (22) and that a composite sleeve (23) is applied around each of the laminations (18, 20) on the motor rotor (15) and on the motor stator (19).