Energy -efficient reducing furnace chassis and polycrystalline silicon reduction furnace

The utility model discloses an energy -efficient reducing furnace chassis, which comprises a base, be equipped with center feeding mouth, n electrode ring layer and n on the chassis- 1 individual feeding ring layer, wherein n >= 4 and n are the positive integer, electrode ring layer and feeding ring layer use the center feeding mouth to set up as centre of a circle interval, every the feeding ringlayer is equipped with is no less than 4 feed inlets, interior outside count is followed on the electrode ring layer, and the n electrode ring layer is equipped with 4n to the electrode, equidistantsetting between two adjacent electrodes of same electrode ring in situ, N is individual be equipped with ejection of compact ring layer outside the electrode ring layer, ejection of compact ring layeris equipped with two at least discharge gates, the equidistant setting of discharge gate is in ejection of compact ring layer. The overall arrangement of electrode and feed inlet on the redesign reducing furnace chassis to imp