Inlet duct for rearward-facing compressor wheel, and...

Details Inlet duct for rearward-facing compressor wheel, and... Inlet duct for rearward-facing compressor wheel, and...

2007-12-11

2007-12-11

Denion, Thomas (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

Reexamination Certificate

active

11285665

ABSTRACT:
A turbocharger includes a compressor wheel having back-to-back impellers (i.e., a forward-facing impeller and a rearward-facing impeller) mounted on the same shaft. The two impellers are independently supplied with inlet air via separate inlet ducts and discharge pressurized air to a common volute. The inlet duct for the rearward-facing impeller comprises a generally axially extending tubular conduit having an upstream end and a downstream end, the tubular conduit being bifurcated at the downstream end into a pair of separate duct branches that divide an air stream flowing through the tubular conduit into a pair of separate air streams. The duct branches direct the air streams radially inwardly and then re-join the streams and turn the air to an axial direction into the second impeller.

REFERENCES:
patent: 2069640 (1937-02-01), Beardsley, Jr.
patent: 2286522 (1942-06-01), Watson
patent: 2868440 (1959-01-01), McMahon
patent: 6289854 (2001-09-01), Holmstrom et al.
patent: 6948314 (2005-09-01), Arnold et al.
patent: 7014418 (2006-03-01), Arnold et al.
patent: 04209993 (1992-07-01), None

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