Axial thrust applying structure for the scrolls of a scroll type

Details Axial thrust applying structure for the scrolls of a scroll type Axial thrust applying structure for the scrolls of a scroll type

1993-08-20

1994-09-13

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F04C 1804, F04C 2700

Patent

active

053463765

ABSTRACT:
A scroll type compressor 10 having a housing 12, a non-orbital scroll 24 mounted in the rear casing of the housing 12 and an orbital scroll 22. The scrolls 22 and 24 cooperate to form fluid pockets 46 and 48. An orbital drive 50 orbits the orbital scroll 22 to move the fluid pockets 46 and 48 to the center of the scrolls and compress the fluid sealed in the pockets. An anti-rotation assembly 54 is connected to the housing 12 and to the orbital scroll 22 to prevent rotation and permit orbital movement of the orbital scroll. An axial thrust load assembly 56 including a baffle plate 114 with continuous pressure chamber flanges 120 and 122 are mounted in the rear section 16 of the housing 12. The flanges 120 and 122 are telescopically received in grooves 124 and 126 in the end plate 28 of the non-orbital scroll 24. V-shaped spring seals 130 are placed in the grooves 124 and 126. High pressure fluid in the inner discharge chamber and medium pressure which enters toroidal intermediate pressure chamber 138 through passage 140 exert an axial force on the scrolls. The non-orbital scroll 24 is mounted on fixed pins 134 which allow axial movement of the scroll. Springs 144 axially bias the non-orbital scroll 24 toward the orbital scroll 22.

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