Scroll compressor having a magnet pressing the moving scroll mem

Details Scroll compressor having a magnet pressing the moving scroll mem Scroll compressor having a magnet pressing the moving scroll mem

1992-04-24

1993-10-05

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 57, F04C 1804

Patent

active

052499405

ABSTRACT:
In a scroll compressor, the moving scroll member is engaged with the stationary scroll member while centrally offset from each other so that they define an actuation chamber between them. When driven by the crank of the compressor shaft and blocked against rotation by the rotation restricting plate, the moving scroll member revolves to compress the fluid in the actuation chamber, and because of the relationship between the compression reaction force and the driving force, a moment is produced to incline the moving scroll member, so that the moving scroll member rises at a portion of the thrust bearing plate, the contact pressure between the scroll members is increased, and a larger driving force is required. Accordingly, the attraction force of the magnet and magnetic body is utilized to press the moving scroll member against the thrust bearing plate. This force can be generated due to the attracting force or repulsing force between magnets, or by the force of a spring. Therefore, according to the present invention, the tooth width of both scroll members can be made larger.

REFERENCES:
patent: 4435137 (1984-03-01), Terauchi
patent: 4457676 (1984-07-01), Hiraga
patent: 4650405 (1987-03-01), Iwanami et al.
patent: 5165878 (1992-11-01), Inagaki et al.
patent: 5167494 (1992-12-01), Inagaki et al.
Inagaki et al Application No. 07/477,463.

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