Patent ID: 7415844

Claim:
A device for manufacturing a preform for optical fibres, comprising a chemical deposition chamber including: at least one burner which is mobile along a direction Z, the direction Z being a longitudinal direction of the preform, and adapted to deposit, on at least one elongated element constituting a substrate for deposition, a chemical substance for forming a preform; at least one suction element for collecting exhaust chemical substances, said at least one suction element being arranged on the opposite side of said at least one burner with respect to an axis Z-Z of positioning of said elongated element and being mobile along a direction substantially parallel to said axis Z-Z; a collector tube associated with said at least one suction element and adapted to discharge said exhaust chemical substances outside of said chemical deposition chamber through an exhaust opening formed on a wall of said chamber; a coupling device between said collector tube and said wall of said chemical deposition chamber at said exhaust opening, said coupling device allowing sliding of said collector tube along the direction Z and translation along a direction X substantially perpendicular to the direction Z, the direction X also being toward a longitudinal axis of the preform and lying in a plane which passes through the longitudinal axis of the preform; the exhaust opening being capable of translation in the direction Z and the direction X.