Device for preheating rod-like workpieces

A device (10) for preheating rod-shaped, metallic workpieces (24) by means of a fluid flow heated by residual or waste heat of a combustion process taking place in a heating device for heating the workpieces (24), the device (10) comprising:

• a preheating chamber (12) for receiving at least one workpiece (24),
• a heat exchanger device (11) having a flow path for the fluid flow and a liquid medium path for a heat transfer medium flow, the liquid medium path being in heat exchange relationship with the flow path for the fluid flow in the heat exchanger in order to transfer heat from the fluid flow to the heat transfer medium flow in the liquid medium path, wherein the liquid medium path defines a heat transfer medium cycle (13) between the heat exchanger device (11) and the preheating chamber (12) in such a manner that the workpiece (24) is preheated indirectly via the heat transfer medium flow heated by the fluid flow in the heat exchanger device (11) and flowing to a liquid discharge device (25) of the preheating chamber (12), wherein the liquid discharge device (25) extends parallel to the longitudinal axis (L) of the workpiece (24) disposed in a reception area (23) of the preheating chamber (12), and
• wherein
• the liquid discharge device (25) has a row of discharge openings (28) for realizing a substantially continuous wetting on the upper side (26) of the workpiece (24) with heat transfer medium, the row of discharge openings (28) extending in the longitudinal direction of the preheating chamber (12).