To provide a hot blast type heating device resolving temperature dispersion of object to be heated by controlling a flow of hot air, minimizing thickness of a thermal boundary layer, and efficiently carrying out heat supply to the object to be heated.
An intake chamber 34 is arranged in a lower side of an inlet port 36 of a blower 35, a plurality of air supply passages 43 is arranged in a periphery of the intake chamber 34, and a pressurizing chamber 44 communicated with the blower 35 via the plurality of air supply passages 43 is arranged in a lower side of the intake chamber 34. A stream lining mechanism 17 is provided throughout a whole area of the pressurizing chamber 44, and a hot blast unit 21 provided with a plurality of protrusion shaped hot blast nozzles 24 blasting hot air to the object W to be heated on a flat plate part 23 is arranged in a lower side of the stream lining mechanism 17. A recovery unit 22 is arranged more to an object to be heated side than the flat plate part 23. In the recovery unit 22, a plurality of recovery port parts 26 forcibly recovering the hot air having hit the object W to be heated and changed direction is provided on a recovery plate 25 with a plurality of hot blast nozzles 24 protruding toward the object to be heated side. A recovery passage 32 for hot air recovery provided between the flat plate part 23 and the recovery plate 25 is communicated with the intake chamber 34 by a recovery passage 33.
COPYRIGHT: (C)2006,JPO&NCIPI
Koji Saito
Fumihiro Yamashita
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