| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor capable of sufficiently reducing vibration without causing problems such as increase in weight of the compressor. SOLUTION: A casing (11) of the compressor (10) is provided with a compression mechanism (30) and an electric motor (15). When a drive shaft (25) is rotated along with rotation of a rotor (17), refrigerant gas is sucked into the compression mechanism (30) and is compressed, and driving torque transmitted from the drive shaft (25) to the compression mechanism (30) is fluctuated. This driving torque fluctuation causes fluctuation of rotational speed of the rotor (17) and the compressor (10) is about to vibrate. Meanwhile, a dynamic vibration reducer (81) comprising pendulums (71) is provided on an upper end face of the rotor (17). When the driving torque is fluctuated, the pendulums (71) oscillate. By centrifugal force applied to the oscillating pendulums (71), the fluctuation of the rotational speed of the rotor (17) caused by the fluctuation of the driving torque is offset. COPYRIGHT: (C)2005,JPO&NCIPI
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