Compressor casing recess

Details Compressor casing recess Compressor casing recess

1984-02-06

1986-08-19

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

415DIG1, F01D 1108

Patent

active

046066993

ABSTRACT:
A means for improving the aerodynamic efficiency of the compressor of an axial flow turbomachine is disclosed. The compressor includes a first airfoil relatively rotatable with respect to a radially disposed surface and a second airfoil, aft of the first airfoil, and fixed with respect to the surface. The surface bounds a flowpath for aft moving fluid. The surface has a circumferentially extending recess radially disposed relative to the airfoils. The recess has a generally aft facing wall, a generally axially directed wall, and a generally forward facing wall. The aft facing wall is oriented so as to provide a barrier to the forward flow of fluid in the clearance between airfoil and surface. The forward facing wall is oriented so as to provide an aerodynamically smooth transition from the recess into the flowpath.

REFERENCES:
patent: 1141473 (1915-06-01), Metten
patent: 1568034 (1925-12-01), Losel
patent: 3885886 (1975-05-01), Richter
patent: 3989406 (1976-11-01), Bliss
patent: 4238170 (1980-12-01), Robideau et al.

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