F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
230/118
F04C 18/00 (2006.01) F01C 21/10 (2006.01) F04C 18/348 (2006.01) F04C 29/00 (2006.01)
Patent
CA 1208612
ABSTRACT OF THE DISCLOSURE A novel sliding-vane type oil free rotary compressor is provided herein. Such compressor includes a center housing, two side housings, a rotary sleeve rotatably mounted in the center housing, a rotor eccentri- cally contained in the rotary sleeve, a plurality of vanes movably fitted in the rotor, a discharge chamber provided in the side housing, a pressure chamber defined by and between the rotary sleeve and the center housing and connected to the discharge chamber through at least a high-pressure passage, the high-pressure passage being disposed in the center housing and communicating with a passage extending to and along the side surface of the center housing, through the side housing and communicating with the dis- charge chamber, the high-pressure passage opening to the pressure chamber through at least one throttle means, whereby the rotary sleeve is floatingly supported by at least one of the static pressure of said pressure chamber and the dynamic pressure of fluid flowing through the throttle means from the high-pressure passage to the pressure chamber. Such compressor can support the rotary sleeve at a wide range of rotary speeds by the use of static and dynamic pressures of a compressible fluid, as compared with the conventional compressor using incompressible fluid to support the rotary sleeve. The com- pressor has a relatively small heat generated from sliding friction, because the rotary sleeve slides relative to either of the vane and the center housing so as to have a smaller resistant force. Therefore, it is particularly suit- able for a supercharger required to operate at high compression ratios and large capacities for use in an automobile.
413125
Horikoshi Yukio
Sakamaki Hiroshi
Borden Ladner Gervais Llp
Nippon Piston Ring Co. Ltd.
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