F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 49/02 (2006.01) F04B 17/05 (2006.01) F04B 27/08 (2006.01) F04B 49/10 (2006.01) F16D 27/112 (2006.01) F25B 31/02 (2006.01)
Patent
CA 2176909
A refrigerant compressor having a drive shaft for driving a compressing mechanism and driven by a drive power transmitted from an external drive power source, and a rotation detecting unit for detecting the rotating speed of the compressor by detecting a change in the magnetic flux leaking from the solenoid clutch and circulating through a predetermined magnetic circuit. The change in the magnetic flux is caused by rotation of a magnetic plate-like element having at least one cutout which moves past the magnetic detecting unit, and a permanent magnet fixedly held by the housing assembly of the compressor is arranged so as to increase the density of the magnetic flux circulating through the predetermined magnetic circuit whereby the change in the magnetic flux caused by the rotation of the magnetic plate- like element becomes rapid.
Kimura Kazuya
Makino Yoshihiro
Goudreau Gage Dubuc
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
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