Diffuser pipe assembly

Details Diffuser pipe assembly Diffuser pipe assembly

1999-01-20

2000-09-26

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

4152112, 4152111, 4152245, F04D 2944

Patent

active

061235067

ABSTRACT:
The invention provides a diffuser assembly constructed of internal and external concentrically nested bowl-shaped shells for directing an outward flow of compressed air from a centrifugal compressor impeller to an axially rearward diffused annular flow. The shells can be easily manufactured from nested metal castings thereby eliminating much of the cost and time involved in fabricating prior art diffusers of multiple formed tubes brazed to a separately machined hub. The novel diffuser assembly has two concentrically nested bowl-shaped shells, each shell having an inner peripheral compressor impeller casing about a central opening, and an outer edge. Opposing nested surfaces of the shells have an array of mating grooves separated by abutting seam edges thus defining individual diffuser ducts extending from the compressor impeller casings to the outer shell edges when the shells are secured together.

REFERENCES:
patent: 2634685 (1953-04-01), Buchi
patent: 3333762 (1967-08-01), Vrana
patent: 4012166 (1977-03-01), Kaesser et al.
patent: 4854126 (1989-08-01), Chevis et al.

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