Patent ID: 7387503
Filing Date: 2008-06-17
Classification: F04C

Abstract:
1. A scroll fluid machine comprising: a driving shaft having an eccentric axial portion; a fixed scroll having an inner surface, an outer surface, a fixed wrap extending from the inner surface, and the fixed scroll having an outer peripheral circumference; an orbiting scroll having an orbiting wrap, the orbiting scroll being rotatably secured around the eccentric axial portion of the driving shaft, the orbiting wrap engaging with the fixed wrap to form a compressing chamber, and the fixed scroll being operable to introduce a gas from the outer peripheral circumference of the fixed scroll into the compressing chamber, the gas being compressed as it flows towards a center of the scroll fluid machine; a plurality of cooling fins on the outer surface of the fixed scroll; and a heat-releasing projection radially disposed straight along a radius extending from a central axis of the fixed scroll between adjacent cooling fins.