Scroll type compressor having recessed buffer means in a spiral

Details Scroll type compressor having recessed buffer means in a spiral Scroll type compressor having recessed buffer means in a spiral

1992-06-22

1993-10-05

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418189, F04C 1804

Patent

active

052499430

ABSTRACT:
A scroll type compressor which includes a fixed scroll and an orbiting scroll. Each scroll includes an end plate, a spiral element, at least one airtight compression chamber formed between the fixed and orbiting scrolls, a discharge port, and a drive mechanism for revolving the orbiting scroll relative to the fixed scroll, for compressing fluid in the compression chamber. The fixed spiral element and the orbiting spiral element include relatively thick tip portions having oppositely disposed flat faces. These faces are arranged in such a way as to periodically approach each other during the revolution of the orbiting scroll. A buffer portion is provided on at least one of the flat faces of the fixed and orbiting tip portions, for preventing over-compression of the fluid trapped between the flat faces.

REFERENCES:
patent: 4547137 (1985-10-01), Terauchi et al.
patent: 4781549 (1988-11-01), Caillat

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