| 摘要 |
<p>It is illustrated a burner-heat exchanger group (1) for a gas boiler, comprising:
- a burner (2) including a diffuser (3) suitable for diffusing premixed combustion gases in a combustion chamber (4); and
- a heat exchanger (5) adjacent to the combustion chamber (4);
wherein said burner-heat exchanger group (1) further comprises a heat accumulation barrier (6) made from porous material arranged between the diffuser (3) and a portion of the heat exchanger (5) and spaced apart from the diffuser (3) so as to define a first combustion area (7), between the burner (2) and the heat accumulation barrier (6), and a second combustion area (8), between the heat accumulation barrier (6) and the heat exchanger (5) and such as to accumulate heat in said first combustion area (7).</p> |
