Device for cooling a steel strip

A cooling device for a cooling operation of a flat metallic product, the cooling device being located in an ascending or descending vertical path, the cooling device comprising:

• a tank filled with a coolant bath defining a coolant surface, the tank including a top opening on an upper surface and a bottom opening on a bottom surface, the flat metallic product capable of passing through the top and the bottom openings so as to describe a path, the bottom opening having a seal;
• two series of coolant projectors, each of the coolant projectors of the two series of coolant projectors including an aperture immersed in the coolant bath, the two series of coolant projectors facing each other on each side of the path;
• any two vertically successive coolant projectors of one of the two series being separated by a gap;
• each of the two series of coolant projectors having an uppermost coolant projector defined as a closest of the coolant projectors to the coolant surface, at least the uppermost coolant projector on both sides of the path being downwardly inclined at an angle of 20° to 40° compared to a horizontal.