| 摘要 |
PROBLEM TO BE SOLVED: To provide a scroll compressor having an oil supply pump in which a clearance among an inner rotor, outer rotor and pump cover is eliminated, an oil supply efficiency is enhanced, an amount of wear under their contact is reduced and its reliability is improved.SOLUTION: This invention relates to a displacement pump comprising: an inner rotor driven by an electric motor through a rotating shaft; an outer rotor engaged with the inner rotor and rotated as the inner rotor is rotated; a pump case for rotatably supporting the inner rotor and the outer rotor; and a pump cover keeping air-tightness of a suction chamber and a discharging chamber partitioned by the inner rotor, outer rotor and pump case. In the displacement pump, the inner rotor is driven by the electric motor to transfer fluid from the suction chamber to the discharging for supplying the fluid, the pump cover is movable in an axial direction of the rotating shaft, and an elastic body for supporting the pump cover and a cover pressor for supporting the elastic body are provided. |
