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1. 发明授权

US5567151A Reflow furnaces with hot air blow type heaters 失效
标题翻译：回流炉带热风吹风式加热器
公开(公告)号：US5567151A
公开(公告)日：1996-10-22
申请号：US326860
申请日：1994-10-21
申请人： Naotake Mizoguchi , Tadao Takahashi
发明人： Naotake Mizoguchi , Tadao Takahashi
IPC分类号： B23K1/008 , F27B9/10 , F27B9/00
CPC分类号： F27B9/10 , B23K1/008
摘要： This invention discloses a furnace in which hot gases are discharged from heaters to provide uniform heating to printed circuit boards commonly used in the electronic industry. Outside air is prevented from flowing into the furnace, so as to reduce and to stabilize the concentration of oxygen. The furnace 1 is designed with an air tunnel 2 to separate it into upper and lower sections which are fitted with hot air blow type heaters 5a, 5b. The hot air discharged from the heaters in the upper and lower sections flow in opposite directions to create a counter-flow of gases. Each individual heater can produce its own hot air circuit. They are designed with the blowing outlet and suction inlet in the same structure with the blowing outlet fitted with a redirectional flow plate 18 which directs the hot air to the suction inlet.
摘要翻译：本发明公开了一种炉子，其中热气体从加热器排出，以对电子工业中通常使用的印刷电路板均匀加热。防止外部空气流入炉中，以减少和稳定氧浓度。炉1设计有空气通道2，以将其分离成装有热风吹式加热器5a，5b的上部和下部。从上部和下部的加热器排出的热空气沿相反的方向流动，产生气体的逆流。每个单独的加热器可以生产自己的热空气回路。它们被设计成具有相同结构的吹出口和抽吸入口，吹风口配有一个将热空气引导到吸入口的定向流动板18。

2. 发明授权

US5039841A Reflow furnace 失效
标题翻译：回流炉
公开(公告)号：US5039841A
公开(公告)日：1991-08-13
申请号：US246487
申请日：1988-09-12
申请人： Rikiya Kato , Naotake Mizoguchi , Kisaku Nakamura
发明人： Rikiya Kato , Naotake Mizoguchi , Kisaku Nakamura
IPC分类号： B23K1/005 , B23K1/008 , B23K1/012 , F27B9/06 , F27B9/10 , F27B9/30 , H05K3/34
CPC分类号： B23K1/008 , F27B9/066 , F27B9/10 , F27B9/3005
摘要： A tunnel-type reflow furnace containing a preliminary heating zone and a main heating zone is disclosed. In the furnace, at least two pairs of infrared heaters are disposed on both the top and bottom of a tunnel providing a pathway for the transfer of an article to be heated, and the infrared heaters are of a gas blowing type. In a preferred embodiment, a gas-blowing nozzle that is freely adjustable in the direction of gas blowing is provided between infrared heaters on both the top and bottom of the tunnel. This furnace allows the heating profile to be easily changed in accordance with a specific use. It is also capable of efficient and uniform heating of a printed circuit board even if it carries many components at high density. As a result, the furnace ensures reliable soldering of the circuit board.

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