Rotary expansible chamber devices – With plural working fluid inlet or outlet passages
Patent
1992-11-23
1994-09-13
Vrablik, John J.
Rotary expansible chamber devices
With plural working fluid inlet or outlet passages
418 551, 418270, 137512, 137853, 137855, F04C 1804, F04C 2900, F16K 1514
Patent
active
053463757
ABSTRACT:
A discharge valve is incorporated into a scroll compressor for use in a refrigerator or an air conditioner. A valve element seating surface having a concave cylindrical shape is formed in the upper surface of the stationary disk of the stationary scroll plate of the scroll compressor, a discharge port is formed through the stationary disk of the stationary scroll plate so as to open in the valve element seating surface, and a discharge valve element having a cylindrical shape conforming to the concave cylindrical shape of the valve element seating surface is seated on the valve element seating surface so as to open or close the discharge port. The valve element seating surface having a concave cylindrical shape facilitates machining the stationary scroll plate, reduces the top clearance of the scroll compressor without reducing the rigidity of the stationary disk, prevents the concentration of stress on the delivery valve, and improves the reliability of the delivery valve.
REFERENCES:
patent: 4389171 (1983-06-01), Eber et al.
patent: 4668172 (1987-05-01), Shibuya et al.
patent: 4764099 (1988-08-01), Nakajima et al.
patent: 4818195 (1989-04-01), Murayama et al.
Patent Abstracts of Japan 63-138185, Jun. 10, 1988, M. Tanizaki, et al., "Scroll Type Compressor".
Patent Abstracts of Japan, 3-121286, May 23, 1991, J. Saito, "Discharge Apparatus of Scroll Compressor".
Akiyama Kazuyuki
Sakaino Keiju
Shirafuji Yoshinori
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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