Patent ID: 7121816

Claim:
A scroll fluid machine comprising: a housing; a driving shaft having an eccentric axial portion; a fixed scroll having a fixed wrap in the housing; an orbiting scroll comprising a boss around an axis and an orbiting wrap extending circumferentially from the boss; and a bearing between the eccentric axial portion of the driving shaft and the boss of the orbiting scroll, said orbiting scroll being revolved by the eccentric axial portion of the driving shaft via the bearing with respect to the fixed scroll to form a compression chamber between said fixed and orbiting wraps so that a gas sucked into the compression chamber through a circumference of the housing is compressed as it moves toward the axis of the orbiting scroll, said orbiting scroll having a first gas-guiding bore that communicates with the compression chamber at one end to allow the compressed gas to pass through and to discharge to an outside, said boss of the orbiting scroll having a second gas-guiding bore in which a heat-releasing rod is inserted, each end of the heat-releasing rod being fixed to the fixed scroll, said second gas-guiding bore having a radius almost equal to a distance between an axis of the driving shaft and an axis of the eccentric axial portion that is the same as the axis of the orbiting scroll to allow the heat-releasing rod to always contact on an inner circumferential surface of the second gas-guiding bore when the orbiting scroll is revolved with respect to the fixed scroll thereby enabling heat in the compressed gas to be absorbed by the heat-releasing rod effectively before heat reaches to the bearing, one end of said heat-releasing rod being projected from the fixed scroll to the outside to release heat to an atmosphere.