| 摘要 |
A burner (1) comprises a front wall (2) with an exchanger opening (4) for the passage of a heat exchanger (14), a rear wall (5) with a fume discharge opening (7), a tubular side wall (8), a tubular diffuser wall (9) within the side wall (8), an annular distribution chamber (12) formed between the side wall (8), a combustion chamber (13) formed within the diffuser wall (9) and suitable for the insertion of the heat exchanger (14), wherein the rear wall (5) comprises a cooling interspace in flow communication with the gas supply line of the burner. |
