Patent ID: 6923862

Claim:
A device for coating a conductor wire, the device comprising: an enameling oven, said oven having a chamber through which said wire, coated in an enameling varnish, passes, and being provided for this purpose with a wire inlet and a wire outlet, and with means for heating said wire along its path within said chamber in order to evaporate solvent from said varnish and bake said varnish on said wire, the atmosphere inside said chamber having low oxygen content, said chamber further maintaining a fan and an air feed inlet communicating with said chamber and servo-controlled to means for measuring said oxygen content, wherein said fan and said air feed inlet are situated in distinct positions that are spaced apart from each other, said fan being situated between the solvent evaporation zone and said air feed inlet in such a manner as to entrain said solvent towards said air feed inlet so that said solvent is treated by combustion outside the zone in which said varnish is baked; and said device having an air feed duct inside said oven, communicating at its two ends with said chamber, and also with said air feed inlet, so as to form a closed gas circulating circuit, said circuit comprising said varnish baking zone, said solvent evaporation zone, and said solvent combustion zone, the gas circulating around said circuit in the opposite direction to the travel direction of said wire inside said chamber.