Patent ID: 9083215
Filing Date: 2015-07-14
Classification: F01D,F01K,H02K

Abstract:
1. A power generation apparatus comprising: an evaporator that evaporates a working medium; an expander that includes an expander rotor rotated by an expansion force of the working medium evaporated in the evaporator; a power generator that includes a power generator rotor connected to the expander rotor, a power generator stator arranged around the power generator rotor for generating electric power with the power generator rotor, and a power generator housing for storing the power generator rotor and the power generator stator; a condenser that condenses the working medium led out from the expander; a circulation pump that transfers the working medium from the condenser to the evaporator; and a cooling mechanism that cools the power generator, wherein the cooling mechanism includes: an inlet which is provided at a location on an opposite side of the expander rotor with respect to the power generator stator in the power generator housing, and is capable of leading the working medium into the power generator housing; a cooling flow passage which supplies the inlet from the circulation pump with the working medium; an outlet capable of leading the working medium out of the power generator housing so as to lead the working medium to the condenser; and a depressurizing mechanism that depressurizes the working medium led via the cooling flow passage from the circulation pump into the power generator housing, wherein the expander includes an expander housing directly connected with the power generator housing and which stores the expander rotor, and the power generator housing and the expander housing are detachable from each other, wherein an exhaust opening which leads the working medium used for rotation of the expander rotor out from the expander housing is provided on the expander housing, and wherein the outlet capable of leading the working medium out of the power generator housing communicates the power generator housing and the expander housing with each other so that the working medium in the power generator housing is led to the exhaust opening.