Multi-zone thermal process system utilizing nonfocused infrared

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

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219411, 219390, F27B 906

Patent

active

045659176

ABSTRACT:
A multi-zone thermal process system utilizing nonfocused infrared panel emitters. An insulated housing has a plurality of zones each having separate panel emitters which heat a product load traveling through the zone and in close proximity to said panel(s) at different peak wavelengths in each zone. The panel emitters emit infrared wavelengths in the middle and far regions. The temperature differences across each zone and between the panel and product are held to a minimum. A specific application of the system is for accomplishing reflow soldering of surface mount devices to printed circuit boards.

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