| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary expansion machine capable of reducing pushing force of a suction control member to a first blocking member. <P>SOLUTION: The rotary expansion machine 4A has the first blocking member 46 and a second blocking member 49 blocking an operation chamber 43. A suction hole 4a is arranged in the first blocking member 46 so as to extend from a pressure receiving surface 46b facing an opposite side of the operation chamber 43 to the operation chamber 43. The suction hole 4a is opened and closed by a suction control member 48 sliding on the pressure receiving surface 46b with the rotation of a shaft 81A. A recess 40a in communication with a suction space 40 covered with one of the sliding side 48d of the suction control member 48 and the pressure receiving surface 46b of the first blocking member 46, forming a pressure chamber surrounded by the suction control member 48 and the first blocking member 46, and filled with operation fluid before expansion is arranged in the other one thereof. <P>COPYRIGHT: (C)2012,JPO&INPIT |
