Thermal isolation system for turbochargers and like machines

Details Thermal isolation system for turbochargers and like machines Thermal isolation system for turbochargers and like machines

1987-02-17

1988-11-22

Croyle, Carlton R.

Pumps

Processes

417407, 415175, 415180, 416244A, F04B 1700, F01D 508

Patent

active

047862386

ABSTRACT:
Apparatus for cooling and thermally isolating turbocompressor foil bearings. The bearing journal includes a hollow shaft through which gas is positively circulated to cool the shaft. A slinger at one end of the shaft develops a centrifugal pumping action during operation of the turbocompressor by virtue of a plurality of radially directed gas passages. Pressurized gas may be introduced from the compressor into the interior of the hollow shaft and, after traversing the shaft, returned to the compressor. The invention includes arrangements for protecting the bearing against combustion products which may leak past turbine wheel seals by removing such combustion products before they can reach the bearing.

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