| 摘要 |
PURPOSE:To reduce the amount of leakage of fluid and enable an efficient production of circulation flow by a method wherein movable guide vanes are fixed and at least one of the walls corresponding to a bottom surface of a cylindrical space is composed of a sliding wall which may be moved toward a central axis of the cylindrical space. CONSTITUTION:Fixed guide vanes 13 are arranged at the inlet port of a circulation flow producing device passage 18, the fluid flowed into the guide vanes is varied in its direction with the angle of each of the fixed guide vanes 13 and then a circulation force is applied to it. Since a width of the flow passage 18 can be set optionally if the movable wall 14 is slid axially under operation of an operating rod 17, a fluid-flowing speed can be varied optionally and also the circulation force can be varied. Further, since no clearance is found between the fixed guide vanes 13 and the side walls 12a, 12b, no leakage of fluid is found. Since they are arranged such that a flowing direction of the fluid is coincided with the tangential direction of an inscribed circle at the extremity end of each of the vanes 13, almost of all the speed vector of fluid can be changed into a circulation force, with the result that a better efficiency of production of circulation flow can be attained.
|
