Patent ID: 7121817

Claim:
A scroll fluid machine comprising: a driving shaft having an eccentric portion at one end: an orbiting scroll comprising an orbiting end plate that has front and rear scroll wraps, said orbiting end plate being fitted on the eccentric portion of the driving shaft; a front stationary scroll comprising a front stationary end plate that has a front stationary wrap; a rear stationary scroll comprising a rear stationary end plate that has a rear stationary wrap; and an electric motor for driving the driving shaft behind the rear stationary end plate, the orbiting scroll being driven by the driving shaft and revolved with respect to the front and rear stationary scrolls while the front and rear orbiting scroll wraps are engaged with the front and rear stationary scroll wraps respectively to create front compressing and rear expanding sections, fluid expanded and cooled in the rear expanding section flowing from the rear expanding section to the electric motor through an inner outlet of the rear stationary end plate to cool the electric motor.