Mechanically actuated tip seals for scroll apparatus and scroll

Details Mechanically actuated tip seals for scroll apparatus and scroll Mechanically actuated tip seals for scroll apparatus and scroll

1981-02-12

1983-07-26

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418142, 418144, 291564R, 29173, 29452, 267156, 277204, 277236, F01C 1908, F16F 108, F16J 1516, B23P 1500

Patent

active

043952054

ABSTRACT:
Axial compliance/sealing means are provided for scroll-type apparatus. These means comprise seal elements capable of experiencing axial and radial motion within channels cut in the tips of the involute wraps to make sealing contact with the end plates of the opposing scroll members. Continuous involute spring members having a pitch larger than the wrap involute channel provide a mechanical force applying means to urge the seal elements into sealing contact. The use of the axial compliance/sealing means allows the contacting surfaces through which radial sealing is effected to be machined to conventional accuracy, and provides automatic compensation for temperature differentials within the apparatus as well for any uneven wear of the scroll members. The sealing means is particularly suited for reliable extended operation in a hermetically sealed apparatus.

REFERENCES:
patent: 3180563 (1965-04-01), Jones et al.
patent: 3942808 (1976-03-01), Gross
patent: 3994636 (1976-11-01), McCullough et al.
patent: 4065279 (1977-12-01), McCullough
patent: 4080120 (1978-03-01), Eiermann
patent: 4199308 (1980-04-01), McCullough

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