BURNER

摘要

The invention relates to a burner comprising an inlet side (3) for the supply of an air-fuel mixture (A) and a combustion side (4) where the air-fuel mixture can be burned. The two sides are connected by a feed-through channel (2) in which means are provided for preventing a flame from penetrating into the feed-through channel. In accordance with the invention the means are formed by a second feed-through channel (5) in the above-mentioned feed-through channel, having a first (6) end ori­ented toward the inlet side and a second end (7) oriented toward the combustion side, with the end at the second side taper­ingly widening toward the combustion side, with the widened portion being at least partly located in the feed-through channel.