Hybrid glass-manufacturing furnace with three convection currents for feeding a float unit

A hybrid glass-manufacturing furnace for feeding a float unit for floating glass on a bath of molten metal, said hybrid glass-manufacturing furnace comprising, from upstream to downstream:

• a hot-crown melting zone (100) comprising at least some burners that are configured to melt a glass batch to obtain a glass bath, said hot-crown melting zone comprising a first convection current and being delimited by a no-return separation device that is configured to prevent the molten glass from going back into the hot-crown melting zone;
• a glass-refining zone comprising a first refining zone comprising at least one burner and electrodes and a second refining zone, said first refining zone being separated from the hot-crown melting zone by said no-return separation device and from the second refining zone by a wall, respectively, wherein the glass is recirculated in the first refining zone on a second convection current and in the second refining zone on a third convection current;
• and
• a glass-cooling zone comprising a conditioning tank through which said third convection current flows.