Mechanically actuated tip seals for scroll apparatus and scroll apparatus embodying the same
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United States of America Patent
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-
Jul 26, 1983
Grant Date -
N/A
app pub date -
Feb 12, 1981
filing date -
Feb 12, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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