Abstract: The device for homogeneous impingement of a planar surface (2) of a tool with a heated gas comprises a nozzle plate (5) which is provided with nozzles (3) and which extends in a parallel position to the planer surface, being provided with openings for the nozzles (3). The nozzles (3) are disposed in a normal position with regard to the surface (2) which is to be impinged upon and are embodied in a tubular form. A spiral-shaped deflector device (6) is arranged therein. Since the gas jets impact upon the surface (2) to be impinged upon in a normal position, the shortest possible jet path arises and heat transition loss is reduced. Spiral shaped guidance of the jets increases the cross-sectional area upon exit, whereupon the surface (2) to be impinged upon is covered in a homogeneous manner when the nozzles (3) are arranged in a suitable manner.

Abstract: An apparatus for cooling extruded profile sections comprises nozzles which are arranged above and below an exit path of the extruded profile section and which are formed as air nozzles arranged transversely of the pressing and exit direction of the extruded profile section and having slit-shaped nozzle openings. The air nozzles arranged beneath the exit path have a smaller nozzle slit width than the air nozzles arranged above the exit path and blowing onto the extruded profile section from above; the distance of the lower air nozzles from the extruded profile section is less than the distance of the upper air nozzles from the extruded profile section; and the air nozzles arranged beneath the extruded profile section are offset with respect to the air nozzles arranged above the extruded profile section in each case by half the pitch, measured in the pressing and transport direction of the extruded profile section.