Turbocharger compressor wheel assembly with boreless hub compres

Details Turbocharger compressor wheel assembly with boreless hub compres Turbocharger compressor wheel assembly with boreless hub compres

1989-10-30

1991-01-22

Kwon, John T.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between shaft or shaft sleeve and...

Seal

4151721, 415200, 416204A, 403361, 417407, F04D 2908

Patent

active

049867334

ABSTRACT:
An improved compressor wheel assembly for a turbocharger or the like includes a centrifugal compressor wheel having a boreless hub to substantially improve wheel fatigue life. The compressor wheel is formed as by casting to include an integral and internally threaded mounting sleeve extending coaxially from the boreless hub. In the assembly, the mounting sleeve extends through an opening in a compressor backplate for threaded connection to a turbocharger shaft, with a thrust collar spacer being interposed between axially facing shoulders defined respectively on the mounting sleeve and shaft to ensure accurate axial positioning of the components. An annular seal flange on the thrust collar spacer extends axially into the backplate opening in generally concentric spaced relation about the mounting sleeve. This seal flange is adapted to carry one or more seal rings for engaging the backplate, thereby sealing the passage of the mounting sleeve and shaft through the backplate opening.

REFERENCES:
patent: 2649050 (1953-08-01), Dibdin
patent: 3961867 (1976-06-01), Woollenweber
patent: 4128283 (1978-12-01), Palmer
patent: 4340317 (1982-07-01), Heitmann et al.
patent: 4613281 (1986-09-01), Lubieniecki
patent: 4705463 (1987-11-01), Joco
patent: 4850820 (1989-07-01), Gutknecht

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