Offset centrifugal compressor

Details Offset centrifugal compressor Offset centrifugal compressor

1983-10-24

1986-10-07

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

416196R, 416231B, F01D 510, F01D 522

Patent

active

046156593

ABSTRACT:
An offset centrifugal compressor having a plurality of curved blades associated with a rotor and defining, respectively, inducer and exducer sections with a plurality of the blades being formed of at least three blade parts extending generally end-to-end. The adjacent ends of adjacent pairs of blade parts are indexed and immersed relative to each other in both the inducer and exducer section to form a pair of gaps through which a jet of gas may travel from the pressure side to the suction side of the blade to control boundary layer build-up and reduce separation of gas from the blade. An aerodynamically contoured bridge member is located in each gap to provide structural integrity and resonance frequency control, with these bridging members being positioned to avoid obstruction of gas flow in the area adjacent the tip of the blade.

REFERENCES:
patent: 1622930 (1927-03-01), von Karman et al.
patent: 2463976 (1949-03-01), Kilchenmann
patent: 2920864 (1960-01-01), Lee
patent: 2941780 (1960-06-01), Von Der Nuell et al.
patent: 3075743 (1963-01-01), Sheets
patent: 3627447 (1971-12-01), Okapuu
patent: 3958905 (1976-05-01), Wood
Paper No. 43, Boyce et al., Investigation of Flow in Centrifugal Impeller with Tandem Inducer-presented at Gas Turbine Congress, Tokyo, Japan, 1977.
Paper No. 66--GT-83, Boyce, A Practical Three-Dimensional Flow Visualization Approach to the Complex Flow Characteristics in a Centrifugal Impeller-presented 1966-Gas Turbine Conference, Zurich, Switzerland.

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