Patent ID: 7723857
Filing Date: 2010-05-25
Classification: F01D,F02C,F04B,F04D,H01M,Y02E

Abstract:
1. A turbo generator comprising: a housing; a tie-shaft positioned within the housing and extending therethrough; at least one bearing configured so as to support the tie-shaft; the tie-shaft in mechanical communication with a rotor and passing entirely through each of a stator winding unit, an impeller, and a turbine wheel mounted within the housing; an air inlet located on a first side of the housing, the air inlet coaxially aligned with a center axis of the housing, the center axis of the housing being coaxial to the tie-shaft and also extending along the entire length of the tie-shaft, the air inlet being configured so that air entering the housing through the air inlet is directed in a single straight airflow path from the air inlet along the center axis into the impeller; and effectively cools the stator winding unit and the at least one bearing without the need for an additional cooling device.