ACM cooling flow path and thrust load design

Details ACM cooling flow path and thrust load design ACM cooling flow path and thrust load design

2005-12-14

2008-07-22

Nguyen, Ninh H (Department: 3745)

Rotary kinetic fluid motors or pumps

Method of operation

C415S107000, C415S230000, C415S104000, C416S19800R

Reexamination Certificate

active

07402020

ABSTRACT:
An air cycle machine includes a housing having a compressor housing portion. A shaft is supported by the housing and includes a thrust runner. A hydrodynamic thrust bearing is arranged adjacent to the thrust runner and includes upstream and downstream sides. A compressor rotor is mounted on the shaft. A seal is arranged between the compressor rotor and the compressor housing portion. An orifice is provided in the compressor housing portion at the downstream side of the hydrodynamic bearing. The orifice vents hot compressed air that may leak past the seal prior to reaching the hydrodynamic thrust bearing.

REFERENCES:
patent: 4507939 (1985-04-01), Wieland
patent: 5130670 (1992-07-01), Jaffe
patent: 5224842 (1993-07-01), Dziorny et al.
patent: 6151909 (2000-11-01), Carter et al.

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