BEARING FOR AIR CYCLE MACHINE

摘要

An air cycle machine has a turbine side and a compressor side. In operation the air cycle machine runs with both turbine and compressor at pressures above ambient, but not at equal pressures. The common shaft for the turbine and compressor is supported on a fluid bearing. Cross transfer of gas may occur between the turbine and compressor through the bearing. The bearing is vented to ambient through passages (33, 37) so that any cross transferring turbine or compressor fluid is dumped into ambient.