Apparatus for enamelling a conductive wire

An apparatus for enamelling a conductive wire, the apparatus comprising:

• at least one enamelling assembly including:
• an applicator for applying varnish on the wire, and
• an enamelling oven, said wire passing through both said applicator and said oven, said oven comprising:
• a single elongate chamber fitted with a wire inlet and a wire outlet at tow opposite ends of said single chamber, and fitted internally, with radian theater elements facing a path followed by the wire between said wire inlet and said outlet within said single chamber, to evaporate solvents form the varnish on the wire and to bake the varnish on the wire within said single chamber, and
• means for treating solvent vapor evaporated from the varnish on the wire directly within said single chamber, said treatment means comprising said radiant heater elements and control means for controlling an internal atmosphere in said single chamber at an oxygen content that is less than 6% while remaining sufficient to burn solvent vapor arising from the varnish on the wire by combustion on contact with said radiant heater elements within said single chamber, without giving rise to any flame;
• wherein said control means comprises a probe for measuring the oxygen content of said internal atmosphere, and an air feed inlet servo-controlled to the measurement of said probe;
• and
• wherein said single chamber is at a pressure lower than an atmospheric pressure.