Pumps – Motor driven – Fluid motor
Patent
1992-01-10
1993-07-06
Bertsch, Richard A.
Pumps
Motor driven
Fluid motor
F04B 1700
Patent
active
052248429
ABSTRACT:
An air cycle machine (10) having a plurality of wheels mounted on a common shaft (20) for rotation therewith about a longitudinal axis (12), including a compressor rotor (60) and a turbine rotor (50) mounted to a central portion (20c) of the shaft in back to back relationship, the turbine rotor (50) being operative to extract energy from a flow of compressed air for driving the shaft (20), and the compressor rotor (60), in rotation about the axis. An annular disc-like member (14) is disposed coaxially about the shaft (20) and extends radially outwardly between the turbine rotor (50) and the compressor rotor (60). A venting and sealing assembly (210, 220, 230) is operatively disposed between the shaft (20) and the annular member (14) intermediate the turbine rotor (50) and the compressor rotor (60) whereby a limited flow of compressor outlet air and a limited flow of turbine inlet air are vented to a low pressure region other than the turbine air flow circuit.
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Dziorny Paul J.
McAuliffe Christopher
Bertsch Richard A.
Habelt William W.
Thorpe Timothy S.
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