Hot air device

原文（中国語）

A hot air device comprising a heating tube and a protective tube is provided, wherein the protective tube surrounds the heating tube and is spaced apart from it, wherein the heating tube comprises a hot air outlet end, wherein the protective tube comprises a first main body and an air outlet end directed towards the hot air outlet end of the heating tube, wherein a non-uniform distance is provided between the protective tube and the heating tube, wherein the distance in the air outlet end is greater than the distance in a region adjacent to the air outlet end, and wherein the air outlet end of the protective tube comprises at least one pass-through opening in a wall, preferably in the region of a widening of the distance.