| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor which is easier and less expensive to construct and which enables the efficient mounting of support rollers for the vanes.SOLUTION: A rotary machine comprises: a stator forming a substantially oval-shaped chamber; and a rotor 72 rotatably mounted in the chamber on a central shaft and defining with the stator two cavities at opposite ends of the chamber. Radially slidable vanes 92 are mounted in slots formed in the rotor, and each vane has first and second primary rollers and first and second secondary rollers mounted thereon. The first rollers are mounted on a first side edge of the vane and the second rollers are mounted on an opposite side edge. Two roller cam devices are provided on sidewalls of the stator and these devices form primary and secondary cam surfaces for controlling radial movement of the vanes, these surfaces being formed inside the roller cam devices. The cam surfaces are offset from each other in an axial direction and in a radial direction relative to the axis of rotation. |
