JPS6463679A - Scroll compressor - Google Patents

Abstract

PURPOSE:To contrive at making a balancer compact and lightweight and at reducing the reaction force by a crankshaft by arranging an upper crankshaft bearing above which the balancer is arranged, and a scroll bearing at a position where both are superposed each other in the radial direction thereof. CONSTITUTION:Stationary and revolving scrolls 7, 8 are parallely arranged with laps 13, 14 planted on the mirror surfaces 11, 12 of the scrolls 7, 8 being meshed with each other. In this arrangement, a scroll bearing 16 is disposed between a scroll shaft 12a and a scroll bearing hole 10b. Meanwhile, upper and lower crankshaft bearings 21, 22 are disposed between the upper and lower section of a crankshaft 10 and a frame 15, respectively. The upper crankshaft bearing 21 is arranged at a position where it is superposed with the scroll bearing 16 on the radial surface of the crankshaft 10. A balancer 42 is provided in the upper end part of the crankshaft 10, at a position above the upper crankshaft bearing 21. With this arrangement, the balancer 42 may be located in the vicinity of the gravitational center of the revolving scroll 8.