Patent ID: 6382500
Filing Date: 2002-05-07
Classification: B23K,H01L

Abstract:
A solder reflow furnace comprising:a heater for heating the solder reflow furnace to an operating temperature; a conveyor for conveying semiconductor devices through the solder reflow furnace; an exhaust opening for venting gases from the solder reflow furnace; and a flux effluent collector connected to the exhaust opening, wherein the flux effluent collector comprises an exhaust pipe coupled to the exhaust opening comprising a flux condensation region of the exhaust pipe offset from the exhaust opening, an exhaust gas heater positioned on the exhaust pipe, a flux cooler positioned on the exhaust pipe, a flux collection container, and a flux drain conduit connecting the flux condensation region to the flux collection container, wherein the flux effluent collector is configured in a concentric manner in the following order from inside to outside: exhaust pipe, exhaust gas heater, flux condensation region, and flux cooler.