Patent ID: 7521815

Claim:
A micro power generating device, comprising: a housing; a hollow rotating shaft mounted through the housing; a plurality of bearings for supporting the rotating shaft; a compressor impeller coupled to a first end of the rotating shaft, the compressor impeller being configured to suck and compress air; a cooler for decreasing a temperature of the compressed air from the compressor impeller; a combustion chamber in which the compressed air is mixed with fuel and combusted; a turbine wheel coupled to a second end of the rotating shaft, the turbine wheel being rotated by the combustion gas exhausted from the combustion chamber; a generator having a stator installed in the housing and a rotor fixed to the rotating shaft so as to be rotated together, wherein the bearings include a high temperature air foil thrust bearing mounted to an axial-middle portion of the rotating shaft for supporting an axial thrust of the rotating shaft, wherein the combustion chamber is positioned between the high temperature air foil thrust bearing and the turbine wheel, and wherein the generator is positioned between the high temperature air foil thrust bearing and the compressor impeller.