| 摘要 |
PURPOSE:To improve thermal efficiency of the rotary machine in the caption by providing a high-pressure rotating hollow body and a low-pressure rotating hollow body, and rotating bodies installed on the inside peripheral sides of both these rotating hollow bodies and variably connecting an actuation chamber to the insides of the rotating bodies by means of a low-pressure passage port, a low-pressure switching port and a control port. CONSTITUTION:When a rotating body 16 makes circular motion to a control position, the air in an actuation chamber 8 is returned to the low-pressure side through a low-pressure passage port 19, a low-pressure switching port 21, a control port 17 and a low-pressure passage 26. Then, after the connection of the low-pressure switching port 21 to the control port 17 is interrupted, the air in the actuation chamber 8 is compressed, and discharged into a high- pressure rotating hollow body 9a when the pressure of the compressed air reaches the pressure in the high-pressure side. As a result, since the work loss caused by expansion shortage is eliminated by forcing a rotating body 29 to make circular motion to an optimal position, the power conversion efficiency can be improved.
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