| 摘要 |
PURPOSE:To reduce the vibration and noise of a compressor by providing balance weights on a crankshaft one by one to remove unbalance moment caused by inertia force. CONSTITUTION:Balance weights 19, 20 are respectively provided on a crankshaft 1 outside two crank pins 2, 3, and respective balance weights 19, 20 are arranged such that eccentricity directions between the nearest crank pin and the mass are displaced by 180 deg. from each other. And, unbalance moment M produced by the balance weights 19, 20 and unbalance moment M due to inertia force serving to turn the compressor are completely balanced with each other, so that vibration and noise of the compressor itself are extremely reduced. |
