Multi-layer structure for heat exchangers for household heating devices.

摘要

The invention relates to a burner (1) for a heating device, said burner being provided with ducts (6) for the supply of a mixture of gaseous fuel and air. The burner is made up of a number of plate-type elements (2, 3) which are placed against each other and are connected to each other to form a unit. The elements define ducts (4) through which a cooling medium can flow. The mixture of gaseous fuel and air is preferably fed to the combustion surface through straight ducts (6), said ducts having a length which is longer than any lateral dimension thereof. Preferably the ducts (4) for the cooling medium are situated at least partially near the combustion surface of the burner (1).