LINE FED PERMANENT MAGNET SYNCHRONOUS TYPE MOTOR USED FOR SCROLL COMPRESSOR WITH BYPASS PORT

摘要

PROBLEM TO BE SOLVED: To provide a scroll compressor with some capacity reduction technique such as a bypass port which has no efficiency degradation in spite of a change of load torque, since an induction motor used for a conventional scroll compressor has peak efficiency at some load torque and has lower efficiency at upper or lower torque.;SOLUTION: The electric motor for driving the scroll compressor is not an induction motor, but rather a line fed permanent magnet synchronous motor is utilized. Such motors have a higher overall efficiency, and thus will be more efficient at reduced capacity operation.;COPYRIGHT: (C)2010,JPO&INPIT