Diffuser of centrifugal compressor

Details Diffuser of centrifugal compressor Diffuser of centrifugal compressor

1990-06-13

1992-09-01

Look, Edward K.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Runner, shaft, or separate motor operated

415151, 415207, 4152245, F01B 2502, F01D 900

Patent

active

051435144

ABSTRACT:
A diffuser of a centrifugal compressor for guiding a fluid flowing from an impeller to a scroll. The diffuser is formed by a pair of oppositely disposed lateral walls. The diffuser is provided at a fluid outlet portion thereof with an outlet throttling portion. This outlet throttling portion is formed by gradually narrowing the passage width downstream from a starting point which is located in a position at which the fluid dynamic pressure is almost perfectly changed to a static pressure. The provision of the outlet throttling portion decreases the risk of a pressure loss, restrains the possibility of flow separation and prevents the fluid from reversely flowing from the scroll. This results in improvements in surge line and partial load efficiency.

REFERENCES:
patent: 2803396 (1957-08-01), Darrow
patent: 3010642 (1961-11-01), Dickmann et al.
patent: 3173241 (1965-03-01), Birmann
patent: 3289919 (1966-12-01), Wood
patent: 3289921 (1966-12-01), Soo
patent: 4544325 (1985-10-01), Rogo et al.
patent: 4932835 (1990-06-01), Sorokes

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