Patent ID: 7309219

Claim:
A scroll type fluid machine comprising: a fixed-side member including a casing and a fixed scroll provided in the casing, the fixed scroll being formed by an end plate and a spiral wrap portion extending from a front surface of the end plate; a rotary shaft supported by the casing; and an orbiting scroll connected to the rotary shaft at a position where the orbiting scroll faces the fixed scroll, the orbiting scroll being formed by an end plate and a wrap portion extending from a front surface of the end plate, the wrap portion of the orbiting scroll overlapping the wrap portion of the fixed scroll, to thereby form a plurality of compression chambers, the rotary shaft being provided with a cooling fan accommodated in the fixed-side member, the cooling fan being adapted to rotate with the rotary shaft at a position where the cooling fan faces the orbiting scroll, the fixed-side member being provided with a flow inlet opening disposed to cause cooling air to be sucked along a reverse side of the orbiting scroll end plate during rotation of the cooling fan, a flow outlet opening for allowing the cooling air sucked from the flow inlet opening to be discharged from the fixed-side member by operation of the cooling fan, and a scroll duct for guiding the cooling air discharged from the flow outlet opening towards a reverse side of the fixed scroll end plate.