| 摘要 |
PURPOSE: A vibration and bearing load reducer of a scroll compressor is provided to minimize the vibration and bearing load of a scroll compressor caused by each force in changing the orbiting radius of an orbiting scroll. CONSTITUTION: A vibration and bearing load reducer of a scroll compressor includes a first balancing unit for reducing the vibration caused by the orbiting motion of an orbiting scroll(16), and a second balancing unit for reducing the bearing load caused by each gas force. The first balancing unit has a sliding roller(21) sliding in the opposite direction of the eccentric mass of the orbiting scroll, and a first balance weight(22) having the outer circumference in slide-contact with an inner circumference(12b) of a main frame(12) to limit the sliding degree. The second balancing unit has a second balance weight(31) for reducing the load of a main bearing fixed to the upper end of a rotor(14B), and a third balance weight(32) fixed to the lower end of the rotor with phase difference of 180 degrees to the second balance weight. When a drive shaft(15) is rotated, the orbiting scroll is orbited to suck and compress refrigerant gas. During compression of the refrigerant gas, the drive shaft is vibrated. The first balance weight is moved in the opposite direction of the eccentric mass of the orbiting scroll along the outer circumference of the sliding roller when the sliding roller is orbited in the same direction. The eccentric load is applied to the inner circumference of the main frame. Therefore, the vibration of the drive shaft is offset.
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