Compressor stage with multiple vented inducer shroud

Details Compressor stage with multiple vented inducer shroud Compressor stage with multiple vented inducer shroud

1988-07-01

1990-06-05

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Radial flow runner portion guides re-entry working fluid

415914, F04D 2942

Patent

active

049309781

ABSTRACT:
A compressor stage or a turbocharger having a compressor stage having an inducer shroud with two or more vents. A first vent is provided with a second vent upstream thereof, allowing for outflow during surge conditions and inflow during choking conditions. Surge line characteristics may be varied by selectively locating the position of the first and of the second vents, and by selectively determining the effective width of the vents. The vents may be circumferential slots, and may be slanted. An outer shroud is provided forming a venting chamber for recirculation of gas into the gas intake. A third vent may be provided to vent the diffuser.

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