Method for re-establishing the symmetrical temperature profile at the exit from a bend in a feeder, and feeder for implementing the method

A method for re-establishing or tending to re-establish a symmetrical distribution of temperatures between right-hand and left-hand sides of a cross section of a flow of molten glass that has been routed in a feeder including at least one bend area, thermal asymmetry having been induced by flowing round said bend area, the feeder including:

• a flow channel formed from refractory and insulative material elements and including a horizontal sole plate and two lateral walls;
• and a vault capping the channel, formed of a refractory roof and lateral parts including burners;
• and each said bend area having an inside region and an outside region where a radius of curvature of the inside region is smaller than a radius of curvature of said outside region;
• the method comprising:
• in an area of each bend area, modifying the flow channel by choosing a corresponding inclined sole plate portion having an inclination being at least 2° relative to the horizontal and chosen so that the flow channel is deeper in said outside region of the bend area than in said inside region and modifying a lateral wall of said outside region such that it is a longer length than a lateral wall of the inside region.