| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflowing plant by which the temperature in a reflow heating part of a furnace body can be lowered in a short time, and the sticking of flux gas in the reflow heating part can be prevented. SOLUTION: In the outside of a furnace body 11 reflow-heating a work W at a reflow heating part 13, a circulation system 26 of discharging a high temperature atmosphere from the reflow heating part 13 to the outside and thereafter returning the same to the furnace body 11 is provided. In the circulation system 26, a cooling means 28 of cooling a high temperature atmosphere is allowed to be existed. The cooling means 28 comprises a cooling condenser 31 of receiving the feed of cooling water and liquefying flux in a vaporized state. The flow rate of the cooling water to be fed to the cooling condenser 31 is controlled by a motor operated valve 36 operated in accordance with an electric signal. The temperature of circulation wind after being passed through the cooling condenser 31 is detected by a temperature sensor 41. A temperature indication controller 42 which receives the detected temperature of the circulation wind from the temperature sensor 41 controls the flow rate of the cooling water in the motor operated valve 36 in such a manner that the detected temperature is controlled to the one set by the temperature indication controller 42. COPYRIGHT: (C)2005,JPO&NCIPI
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