Apparatus for measuring heating temperature in high electric...

G - Physics – 01 – J

Patent

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G01J 5/08 (2006.01) F24C 7/02 (2006.01) G01J 5/04 (2006.01) H05B 6/68 (2006.01)

Patent

CA 2058904

A microwave heating apparatus comprises a heating chamber for supporting an object to be heated, a microwave generator for generating microwave energy inside the heating chamber to heat the object, and an infrared radiation thermometer disposed outside the heating chamber. A probe is disposed inside the heating chamber; the probe being formed of a microwave transparent material. A fiber cable has a first end connected to the probe and a second end connected to the thermometer. A lens is fixed in the probe in alignment with the fiber cable, for collecting infrared rays radiated from the object to be heated in the heating chamber and for transmitting the collected infrared rays into the fiber cable. The collected infrared rays are transmitted through the fiber cable to the thermometer disposed outside the heating chamber, so as to measure an infrared radiation temperature of the object. Optionally, a purge gas supply source can be disposed outside the heating chamber, with a gas purge conduit connecting the purge gas supply source to the probe. A purge gas channel formed in the probe and operably connected with the gas purge conduit can release purge gas from the supply source toward the object, so that infrared rays are collected by the lens, while water vapor and/or a decomposition gas generated from the object is removed by purge gas.

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