Air cycle machine with heat isolation having back-to-back turbin

Details Air cycle machine with heat isolation having back-to-back turbin Air cycle machine with heat isolation having back-to-back turbin

1992-01-10

1993-10-05

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

62402, F04B 1700

Patent

active

052499340

ABSTRACT:
An air cycle machine (10) 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. The compressor rotor (60) and the compressor outlet flow passing through duct (164) are thermally isolated from the turbine rotor (50) and the turbine inlet flow passing through duct (152), respectively, by an annular disc-like member (14) of a low thermal conductivity, fiber reinforced resin composite disposed about the shaft 20 and extending radially outwardly between the turbine rotor (50) and the compressor rotor (60).

REFERENCES:
patent: 2492672 (1949-12-01), Wood
patent: 3428242 (1969-02-01), Rannenberg
patent: 4260339 (1981-04-01), Lofts
patent: 4312191 (1982-01-01), Biagini
patent: 4482303 (1984-11-01), Acosta
Modern Plactics Encyclopedia, McGraw-Hill, Oct. 1988. vol. 65, No. 11. pp. 78, 83, 135, 195-196, and 198-199.

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