Two-row pipe diffusers with boundary layer control

Details Two-row pipe diffusers with boundary layer control Two-row pipe diffusers with boundary layer control

1989-07-27

1990-10-30

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

415207, 4152112, F04D 2944

Patent

active

049665235

ABSTRACT:
A diffuser for a radial flow compressor includes a pair of coaxial rings, the second of which closely surrounds the first. A set of intersecting flow passages extends through the first ring, and another aligned set of flow passages extends through the second ring. In a first embodiment of the invention, a circumferential groove is formed between the two rings, thus allowing low momentum fluid to migrate from the pressure side of one passage to the suction side of a neighboring passage and to prevent boundary layer build-up. In a second embodiment of the invention, the passages are arranged in a double cone configuration which allows higher diffusion levels than are attainable in a straight cone diffuser of equal length.

REFERENCES:
patent: 2836347 (1958-05-01), Barr et al.
patent: 3719430 (1973-03-01), Blair et al.
patent: 3743436 (1973-07-01), O'Connor
patent: 4022541 (1977-05-01), Perrigo et al.
patent: 4027997 (1977-06-01), Bryans
patent: 4099891 (1978-07-01), Campbell
patent: 4234290 (1980-11-01), Lobach et al.
patent: 4302150 (1981-11-01), Wieland

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