Patent ID: 9618020
Date: 2017-04-11
CPC Classifications: F01C,F15B,H02K

Claim:
1. A power generation apparatus, comprising: a generator that includes a rotor and a stator disposed radially outside the rotor; an expander through which a working medium flows in a working medium flow direction, while the working medium is expanded in an expansion chamber of the expander to gradually increase the volume of the expansion chamber, the expander having a movable element that is moved by the expansion of the expansion chamber and whose movement drives the rotor; and a casing that includes an expander chamber accommodating the expander and a generator chamber accommodating the generator therein, a first communication portion that extracts a portion of partially expanded working fluid being expanded in the expansion chamber and discharges the partially expanded working fluid into the front generator portion of the generator chamber, where the front generator portion is located nearer the expansion chamber than is the generator in the generator chamber, and a second communication portion that communicates the partially expanded working fluid in front generator portion with a downstream portion located near the expansion chamber with respect to the generator, wherein the downstream portion is a portion downstream from the expansion chamber in the working medium flow direction whereby the working medium has been fully expanded in the downstream portion.