Scroll machine with wraps of different thicknesses

Details Scroll machine with wraps of different thicknesses Scroll machine with wraps of different thicknesses

1988-09-02

1989-05-30

Vrablik, John J.

Rotary expansible chamber devices

Methods

418 55, F01C 104

Patent

active

048346330

ABSTRACT:
A scroll compressor can be provided with different wrap thicknesses to compensate for the different material properties of the orbiting and fixed scroll elements. The concept of different wrap thicknesses also aids in the select-fitting of parts and in the provision of and adjustment of a clearance or spacing between the wrap elements. Additionally, in the manufacture of a scroll compressor, the total wrap thickness of the two wraps is kept constant within narrow tolerances while the individual wrap thicknesses are allowed to vary over a predetermined range. The cutting tools used are sized such that even if they differ in their cutting diameters, the combined cutting diameters, and therefore the total wrap thicknesses, are constant within narrow tolerances. This permits the tools to be used and resharpened until their cutting diameters fall below the minimum acceptable diameter.

REFERENCES:
patent: 1376291 (1921-04-01), Rolkerr
patent: 4082484 (1978-04-01), McCullough
patent: 4382754 (1983-05-01), Shaffer et al.
patent: 4490099 (1984-12-01), Terauchi et al.

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