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A refrigerant compressor for use in an automotive air conditioning refrigerating system is provided with an electromagnetic clutch and an AC electric generator assembled on the compressor. The electromagnetic clutch comprises a pulley rotatably mounted on the compressor housing to be driven by the e

A refrigerant compressor for use in an automotive air conditioning refrigerating system is provided with an electromagnetic clutch and an AC electric generator assembled on the compressor. The electromagnetic clutch comprises a pulley rotatably mounted on the compressor housing to be driven by the engine of the car, a magnetic attracting surface, and a magnetic armature connected to a drive shaft of the compressor to be magnetically attracted to the magnetic attracting surface to selectively drive the compressor by the engine. The AC electric generator comprises a stator statically mounted on the compressor housing and a rotor mounted on the pulley. One of the stator and the rotor includes concentric magnetic pole pieces of permanent magnets or of electromagnets, and the other of the stator and rotor includes a coil member to which AC current is induced upon the rotation of the rotor together with the pulley. Electric power is obtained from the AC electric generator to compensate for the power consumption of the car battery in the use of the air conditioning refrigerating system.

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A refrigerant compressor having an electromagnetic clutch for use in an automotive air conditioning refrigerating system, said compressor comprising: a compressor body including a compressor housing, a rotatable shaft protruding from said compressor housing for driving a compressor piston within sai

A refrigerant compressor having an electromagnetic clutch for use in an automotive air conditioning refrigerating system, said compressor comprising: a compressor body including a compressor housing, a rotatable shaft protruding from said compressor housing for driving a compressor piston within said compressor housing, and a sleeve extending from said compressor housing surrounding and concentric with said shaft; an electromagnetic clutch device comprising a rotating member rotatably mounted on said sleeve and adapted to be driven by an automobile engine, said rotating member being provided with magnetic attraction surface, a magnetic armature connected to said shaft and magnetically associated with said magnetic attraction surface, and electromagnetic means associated with said rotating element for attracting said armature to said magnetic attraction surface to transmit the rotating force of said rotating member to said shaft; and an AC electric generator device comprising a rotor member mounted on said rotating member, and a stator member statically mounted on said compressor housing, one of said rotor member and said stator member being provided with magnetic pole pieces facing the other of said rotor member and said stator member with a gap arranged such that each two adjacent magnetic pole pieces are different in magnetic polarity from one another, and the other of said rotor member and said stator member including coil means in which electric currents are induced upon the rotation of said rotor member.