Patent ID: 8521013
Filing Date: 2013-08-27
Classification: F27B,F27D,G01J

Abstract:
1. A temperature sensing device, for being disposed in a vacuum chamber inside which vacuum heating treatment for heating a substrate to be heated by means of radiation takes place, comprising: a temperature measurement substrate is disposed in a non-contacting relationship to a the substrate to be heated; a circulation passage disposed in close contact with the temperature measurement substrate so as to make a coolant flow inside the circulation passage; and a temperature sensor provided to the temperature measurement substrate for measuring the temperature of the temperature measurement substrate, wherein the temperature sensing device is such that the temperature as being output by the temperature sensor is detected when the substrate to be heated and the temperature measurement substrate disposing in a position outside a region where the radiation heating means and the substrate to be heated face each other are irradiated with infrared rays which are emitted from a radiation heating means, and wherein the temperature measurement substrate and the substrate to be heated are made of different materials, and wherein the temperature sensing device is such that when the substrate to be heated and the temperature measurement substrate are being raised in temperature by the infrared rays starting from the same temperature, the substrate to be heated and the temperature measurement substrate are raised in temperature at the same rate of the temperature-rise speed.