Axial compliance/sealing means for improved radial sealing for scroll apparatus and scroll apparatus incorporating the same

摘要

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.