초록 ▼

A highly efficient centrifugal type fluid machine is configured so that the vane outlet angle or the vane outlet diameter at a side plate end (4a) of a single stage or a plurality of stages of a diffuser (D) is made larger than the vane outlet angle or the vane outlet diameter at a core plate end (4

A highly efficient centrifugal type fluid machine is configured so that the vane outlet angle or the vane outlet diameter at a side plate end (4a) of a single stage or a plurality of stages of a diffuser (D) is made larger than the vane outlet angle or the vane outlet diameter at a core plate end (4b), and the vane curve at a pressure surface end of a single stage or a plurality of stages of the diffuser (D) is formed to have the same radius of curvature at the side plate end (4a) and at the core plate end (4b), while the vane curve at a negative pressure surface end is formed to have a radius of curvature so that the vane thickness at the core plate end (4b) is larger than that at the side plate end (4a).

대표청구항 ▼

[ We claim:] [1.] A centrifugal type fluid machine comprising: a radial impeller which is attached to a main shaft and which rotates together with said main shaft, a diffuser which is located on an outer periphery of said radial impeller and guides a flow of a fluid coming out of said radial impelle

[ We claim:] [1.] A centrifugal type fluid machine comprising: a radial impeller which is attached to a main shaft and which rotates together with said main shaft, a diffuser which is located on an outer periphery of said radial impeller and guides a flow of a fluid coming out of said radial impeller so that it is directed outward to recover static pressure, a diffuser vane formed on said diffuser, and a stage which forms a bent passage for guiding an outward flow coming out of said diffuser to an inward flow and a return passage for gathering inward the flow coming out of said bent passage and for guiding it to an inlet of a radial impeller of the next stage, which are mounted in multiple stages in the axial direction; characterized in thatsaid diffuser vane is formed so that a vane outlet angle at a side plate end of a plurality of stages of said diffuser is larger than a vane outlet angle at a core plate end.