Non-contact type seal device for turbocharger
A non-contact type seal device is described for a turbocharger, comprising: a retainer mounted in a compressor chamber of a housing of the turbocharger; a collar attached to a compressor wheel mounting portion of a rotor shaft of the turbocharger; and a ring provided on an inner peripheral surface of the retainer, an annular groove receiving the ring being formed in an outer peripheral surface of the collar; a first gap being formed between the outer peripheral surface of the collar and the inner peripheral surface of the retainer; a second gap being formed between the inner surface of the annular groove and each of inner and opposite end surfaces of the ring; and a threaded groove being formed in the inner peripheral surface of the retainer in opposition to the outer peripheral surface of the collar.
- Assignee:
- Taiho Kogyo Co., Ltd., Aichi
- Patent Number(s):
- US 4645213
- OSTI ID:
- 6721127
- Resource Relation:
- Patent File Date: Filed date 28 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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