Sliding-vane rotary compressor with specific cylinder bore profi

Details Sliding-vane rotary compressor with specific cylinder bore profi Sliding-vane rotary compressor with specific cylinder bore profi

1985-03-14

1986-10-14

Vrablik, John J.

Rotary expansible chamber devices

Working chamber surface expressed mathematically

418255, 418259, F04C 1800

Patent

active

046169849

ABSTRACT:
A multiple-vane rotary compressor having a cylinder bore profile especially designed to reduce the fluctuation in the overall drive torque applied to the rotor shaft. The cylinder bore profile is configured and designed so that the individual drive torque applied to an individual vane during the compression and delivery strokes varies along a drive torque-vane angle curve which approximates an isosceles triangle having a lower side corresponding to a range of angle of 180.degree.. The cylinder bore profile includes, for a profile section extending through an angle of 180.degree., a first region (i) in which the amount of vane projection is held substantially constant at a maximum value (D), a second region (ii) in which the amount of vane projection decreases at a higher rate, and a third region (iii) in which the amount of vane projection decreases to zero at a lower rate, the imaginary transitional point (A.sub.3) between the second and third regions being located at an angular position of 90.degree..

REFERENCES:
patent: 2791185 (1957-05-01), Bohnhoff et al.
patent: 3565558 (1971-02-01), Tobacman
patent: 4480973 (1984-11-01), Ishizuka
patent: 4501537 (1985-02-01), Ishizuka

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