Rotary type fluid energy convertor

Abstract

A rotary-type fluid energy convertor comprises a pair of cylindrical body members, a pintle inserted into the cylindrical body members and having a cylindrical central portion between the body members, a cylinder barrel mounted on an outer periphery surface of the central portion of the pintle, the cylinder barrel being provided with a plurality of spaces isometrically arranged in radial directions thereof, a plurality of bushings fitted into the spaces, a rotary body mounted to the body members to be rotatable and having an inner periphery sectioned into a plurality of flat surface portions against which the top flat portions of the bushings closely abut, respectively, so as to form pressure chambers therebetween, and high and low pressure side fluid passages formed between the cylinder barrel and the cylindrical portion of the pintle. the pintle is disposed so as to be movable parallel to a direction axially normal to the body members so that an amount of eccentricity between a center of the cylindrical portion of the pintle and a rotation center of the rotary body is to be adjustable. The pintle is provided with fluid passages which communicate the fluid inlet and outlet formed to the body members with ports formed to the high and low pressure side fluid passages. The body members is provided with a pair of high and low pressure side pressure chambers at portions symmetric with the high and low pressure side fluid passages, respectively.