Rotary kinetic fluid motors or pumps – Including heat insulation or exchange means – Working fluid on at least one side of heat exchange wall
Patent
1987-08-14
1988-12-20
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Including heat insulation or exchange means
Working fluid on at least one side of heat exchange wall
415143, 415DIG7, F04D 2958
Patent
active
047922788
ABSTRACT:
A turbocooler includes a multistage turbine wheel for simultaneous and independent interaction with multiple gas streams to reduce the temperature levels of the gas streams. The turbine wheel includes at least two turbine stages designed to discharge the respective gas streams at different temperature levels, wherein the warmer gas stream is interposed between the colder gas stream and a turbocooler load. The warmer gas stream thus provides a thermal barrier isolating the colder gas stream from turbocooler heat sources thereby permitting increased temperature reduction of the colder gas stream for use, for example, in cryocooler applications. The multistage turbine wheel further facilitates bearing lift-off, for example, in a foil bearing machine.
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Abel D. B.
Allied-Signal Inc.
Garrett Robert E.
Kwon John T.
McFarland J. W.
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