Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1994-01-28
1995-04-04
Bertsch, Richard A.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418151, F01C 104
Patent
active
054031710
ABSTRACT:
In a scroll type compressor, the cylindrical surface of the auxiliary shaft 5c is eccentric from the cylindrical surface of the main shaft 5b and the cylindrical surface of the rotor shaft 5d, in such a manner that the amount of eccentricity thereof satisfies the following condition: 1/10000<(amount of eccentricity)/(bearing span)<20/10000, and the direction of eccentricity thereof is in a range of from 0.degree. to 40.degree. in the direction of the centrifugal force of the upper balance weight 8 with respect to the direction in which the crank section 5a receives a gas compression load, and the main shaft 5b has an initial angle of relative inclination opposite to the angle of inclination which is formed by the gas pressure load and the centrifugal load of the balance weight. During the operation of the compressor, the load deflection angle and the initial deflection angle are canceled out by each other, so that the main bearing 3a and the main shaft 5b are held in parallel with each other. As a result, the input is decreased, and the shaft is scarcely worn, and is prevented from seizure.
REFERENCES:
patent: 4898520 (1990-02-01), Nieter et al.
patent: 5174738 (1992-12-01), Baumann et al.
Patent Abstracts of Japan, vol. 16, No. 282 (M-1269), Jun. 23, 1992, JP-A-04 072 484, Mar. 6, 1992.
Patent Abstracts of Japan, vol. 16, No. 446 (M-1311), Sep. 17, 1992, JP-A-04 153 587, May 27, 1992.
Patent Abstracts of Japan, vol. 11, No. 392 (M-653) [2839], Dec. 22, 1987, JP-A-62 159 783, Jul. 15, 1987.
Ogawa Hiroshi
Sugita Tatsuya
Suzuki Kenji
Yamamoto Takashi
Bertsch Richard A.
Freay Charles G.
Mitsubishi Denki & Kabushiki Kaisha
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