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Patent Searching and Data

Document Type and Number:
Japanese Patent JP2000144239
Kind Code:

To provide a heat treatment furnace which can execute the heat treatment in a good energy efficiency and at a low cost.

A holding chamber 5 for holding a material to be treated, is arranged. Then, a hot blast generating chamber 1 freely generating the hot blast is arranged, and the hot blast generating chamber 1 and the holding chamber 5 are connected through a gas sucking passage 4 for supplying the hot blast generated in the hot blast generating chamber 1 into the holding chamber 5. A gas exhaust passage 8 for exhausting the hot blast passed through the holding chamber 5 from this chamber to the outside of the chamber, is arranged, and in the hot blast generating chamber 1, an electric heater 2 and a combustion type gas heater 3 are arranged. Further, a blasting means 6 for blasting the gas heated with at least one side of both heaters 2, 3 into the holding chamber 5 through the gas sucking passage 4, is arranged. An operating device 7 for freely operating to separately change into the working state and the work- stopping state to the electric heater 2 and the combustion type gas heater 3, is arranged.

Inoue, Yoshitaka
Application Number:
Publication Date:
May 26, 2000
Filing Date:
November 02, 1998
Export Citation:
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International Classes:
C21D11/00; C21D1/34; F27B17/00; F27D19/00; F27D21/00; (IPC1-7): C21D1/34; C21D11/00; F27B17/00; F27D19/00; F27D21/00