Patent ID: 7922485
Filing Date: 2011-04-12
Classification: F27B,H01L,Y10S

Abstract:
1. A vertical type heat processing apparatus, comprising: a heating furnace having a furnace port formed at a bottom portion thereof; a pair of substrate holding tools each adapted to hold multiple substrates in a multistage fashion and configured to be carried into the heating furnace so as to perform a heating process to the substrates; a cover adapted to close the furnace port of the heating furnace; a heat insulating mount provided on the cover; a lifting mechanism adapted to raise and lower the cover; a substrate-holding-tool table provided adjacent to a position just below the heating furnace; and a substrate-holding-tool carrier mechanism adapted to carry each of the pair of substrate holding tools between a position on the heat insulating mount and a position on the table, wherein a fall-down prevention member adapted for preventing fall down of each substrate holding tool is fixed to the substrate-holding-tool carrier mechanism, wherein each substrate holding tool has a bottom plate, a top plate, and struts each provided between the bottom plate and the top plate and adapted to hold the substrates in a multistage fashion, wherein the substrate-holding-tool carrier mechanism includes a flat and U-shaped supporting part adapted to support a bottom face of the bottom plate of the substrate holding tool, wherein the fall-down prevention member includes a flat and U-shaped restriction piece with a shape corresponding to that of the supporting part, configured to be opposed to a top face of the bottom plate supported by the supporting part, with a gap, and wherein the restriction piece has a base portion in which a notch is formed to avoid interference with one of the struts, and left and right arm portions both extending forward so that the left and right arm portions do not interfere with the struts.