| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating furnace capable of making a hot air blow-off temperature reach a set temperature of a heated object in a short time. SOLUTION: In the heating furnace for distributing hot air into a furnace body 2 through a duct 3 and heating a heated object by the hot air blown off from the furnace body 2, heat insulating materials 13 are attached to inner faces of the duct 3 and/or the furnace body 2, so that the hot air is prevented from being directly kept into contact with the duct 3 and/or the furnace body 2 by the heat insulating materials 13 attached to the inner faces of the duct 3 and/or the furnace body 2 to suppress thermal influences of the duct 3 and/or the furnace body 2 on the hot air passing through the duct 3 and the furnace body 2. COPYRIGHT: (C)2011,JPO&INPIT |
