Intake device, power generator, external combustion system using intake device and power generator, internal combustion system using intake device and power generator, and air hybrid power generation system using intake device and power generator

A power generator comprising:

• a circular power generation housing which has a hollow portion formed at a center thereof;
• an annular fluid flow path which is formed in the power generation housing;
• a fluid inlet part which is installed at one side of the power generation housing and guides an inflow of a fluid into the fluid flow path;
• a fluid outlet part which is installed at the other side of the power generation housing and guides a discharge of the fluid which flows into the fluid inlet part and passes through the fluid flow path;
• a power piston which is disposed in the fluid flow path, and rotates along the fluid flow path by the fluid introduced through the fluid inlet part;
• a shaft which penetrates the hollow portion of the power generation housing, and is connected with the power piston so as to rotate together with the power piston when the power piston rotates;
• and
• a flow path opening and closing unit which is installed in the fluid flow path between the fluid inlet part and the fluid outlet part, and includes a plurality of flow path opening and closing members, elastic bodies that are installed between the plurality of flow path opening and closing members and the fluid flow path and support the plurality of flow path opening and closing members, respectively, and a catching projection that inhibits the plurality of flow path opening and closing members from sliding in the movement direction of the power piston,
• wherein the plurality of flow path opening and closing members opens the fluid flow path by moving away from each other while sliding in the movement direction of the power piston by pressing force of the power piston, and when pressing force of the power piston is released, the plurality of flow path opening and closing members closes the fluid flow path by pressing force of the fluid between the plurality of flow path opening and closing members and the catching projection in a direction in which the fluid flow path is closed, and by elastic force of the elastic bodies.