Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Re-entry working fluid joins inlet working fluid upstream of...
Patent
1988-05-09
1990-06-05
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Re-entry working fluid joins inlet working fluid upstream of...
415 583, 415206, 415914, F04D 2942
Patent
active
049309790
ABSTRACT:
The disclosure illustrates a range improvement feature for a compressor wheel in which a chamber adjacent the inlet is separated from the outer periphery of the impeller wheel vanes by a wall through which communication is established between the chamber and the impeller wheel. Communication is provided by either an annular slot or a series of radial holes. The feature may be used on single stage or multistage compressors. The area of the communication is such that at high rpm, and/or high flow, flow is from the chamber inward and at lower flows the flow is from the impeller wheel outward. This bidirectional flow improves the range over twhich the compressor may operate without encountering surge.
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Fisher Frank B.
Langdon Paul J.
Cummins Engine Company, Inc.
Garrett Robert E.
Gron Gary M.
Kwon John T.
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