Patent ID: 8023806
Filing Date: 2011-09-20
Classification: F26B,F27B,H01L

Abstract:
1. A heat processing furnace comprising: a processing vessel for accommodating an object to be processed and performing thereto a heat process; and a cylindrical heater disposed to surround an outer circumference of the processing vessel, for heating the object to be processed; wherein the heater includes a cylindrical heat insulating member, and heating resistors arranged along an inner circumferential surface of the heat insulating member, each of the heating resistors is formed of a strip-shaped member that is bent into a waveform having peak portions and trough portions, and pin members are arranged in the heat insulating member at suitable intervals therebetween, the pin members holding the heating resistor such that the heating resistor is movable in a radial direction of the heater, wherein the heat insulating member is divided into a right half part and a left half part, with longitudinally extending dividing surfaces therebetween, each of the heating resistors is also divided into a right half part and a left half part, corresponding to the heat insulating member, one heating resistor and the other heating resistors vertically adjacent thereto are connected to each other at their ends via connecting plates, and the connecting plates are disposed on the dividing surface parts of the heat insulating member.