Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1978-10-02
1980-04-22
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418142, 418144, F01C 102, F01C 1908, F04C 2700
Patent
active
041993080
ABSTRACT:
Axial compliance/sealing means are provided for scroll-type apparatus. These means comprise seal elements associated with the involute wraps which are urged by an axial force to make sealing contact with the end plates of the opposing scroll members. A two-sided channel open to the centerline of the apparatus is cut in the contacting end of each wrap; and within the channel is positioned a seal element for making sealing contact with the surface of the end plate of the opposing or complementary scroll member. The seal element is compressively loaded toward the back of the channel and axially loaded toward the opposing end plate. The use of the axial compliance/sealing means allows the contacting surfaces through which radial sealing is effected to be machined to conventional accuracy, provides automatic compensation for temperature differentials within the apparatus as well as for any uneven wear of the scroll members, and permits the use of machining and fabrication techniques which are relatively low in cost.
REFERENCES:
patent: 801182 (1905-10-01), Creux
patent: 3384055 (1968-05-01), Glenday et al.
patent: 3895892 (1975-07-01), Sasaki
patent: 3994636 (1976-11-01), McCullough et al.
patent: 4082484 (1978-04-01), McCullough
Arthur D. Little Inc.
Lepper Bessie A.
Vrablik John J.
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