Bladed rotor of a turbo-machine

Details Bladed rotor of a turbo-machine Bladed rotor of a turbo-machine

1995-08-03

1996-09-10

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

416248, F01D 530

Patent

active

055540058

ABSTRACT:
In a bladed rotor (1) of a turbo-machine, the blade roots (3) and blade grooves are made pinetree-shaped with a plurality of indentations (10, 21) and teeth (11, 20). A plurality of supporting surfaces (F) extending obliquely are formed thereby. The indentations (10, 21), adjoining the supporting surfaces, in the blade root (3) and in the blade groove are described essentially by a first curve radius (R1) and a second curve radius (R2).
The first curve radius (R1) adjacent to the supporting surface (F) is smaller than the second curve radius (R2). The opening angle (W) between a tangent (T) to the circle arc (22), described by the first curve radius R1, at the end point (A, B) of the supporting surface and the supporting surface (F) amounts to at least forty degrees.

REFERENCES:
patent: 4191509 (1980-03-01), Leonardi
patent: 4260331 (1981-04-01), Goodwin
patent: 4692976 (1987-09-01), Andrews
patent: 4824328 (1989-04-01), Pisz et al.
patent: 5110262 (1992-05-01), Evans
patent: 5147180 (1992-09-01), Johnson
patent: 5152669 (1992-10-01), Heinig et al.
patent: 5160242 (1992-11-01), Brown

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