Spiral compressor with guides for fixing the spiral element agai

Details Spiral compressor with guides for fixing the spiral element agai Spiral compressor with guides for fixing the spiral element agai

1986-12-01

1988-03-15

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 56, 418 57, F04C 1804

Patent

active

047310006

ABSTRACT:
A spiral compressor has a two-part housing, a displacement element positioned between two parts of the housing and having a spiral wall extending into a spiral chamber, formed in one of the housing parts, so that two working chambers are defined in the spiral chamber. The displacement element has an eccentric which is mounted to the end of a drive shaft. The displacement element is provided with a device for securing it against rotation. The securing device includes at least three guides positioned on the displacement element and circumferentially spaced from each other. Each guide has a ball bearing engaged in a plastic sleeve located in a pocket bore of the displacement element and supported on a bolt screwed to the second one of the housing parts. Thereby the displacement element is slightly pre-stressed in each position of the eccentric and thus secured against rotation.

REFERENCES:
patent: 3314370 (1967-04-01), Jacobs
patent: 3817664 (1974-06-01), Bennett et al.
patent: 4314796 (1982-02-01), Terauchi
patent: 4475874 (1984-10-01), Sato
patent: 4609334 (1986-09-01), Muir et al.
Copy of MTZ Motortechnische Zeitschrift, 46 (1985), 9: "VW's Mechanical Driven Super Charger", by K.-D. Emmenthal, C. Muller and O. Schafer.

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