Patent ID: 9316223
Filing Date: 2016-04-19
CPC Classification: F01C,F04C

Claim Text:
1. A scroll expander comprising: a drive shaft; a drive scroll body provided integrally with the drive shaft; a driven scroll body having a rotary axis that is eccentric relative to a rotary axis of the drive shaft; an interlocking mechanism that causes the drive scroll body and the driven scroll body to rotate synchronously; and a bearing that supports the drive shaft and the driven scroll body rotatably relative to a housing, wherein an expansion chamber is formed by the drive scroll body and the driven scroll body, a working medium introduction hole that extends in an axial direction along the center of the drive shaft and opens in a radial direction perpendicular to the axial direction, into a central portion of the expansion chamber is provided in the drive shaft, and an adiabatic layer is provided in a region between the bearing and the working medium introduction hole so as to surround the working medium introduction hole.