| 摘要 |
PURPOSE:To improve a waste neat recoverying efficiency with a rational configuration, reduce noise and NOx value, make a compact size device and facilitate its maintenance. CONSTITUTION:First and second heat accumulation members 18a to 18d having ceramic honeycomb structure are alternatively arranged around a main body 6 of a burner while being adjacent to each other in their circumferential direction. The rear part of a housing frame 1 is provided with a passage passing through a first air chamber 15 and a communication passage 19 and communicating with the first heat accumulators 18a, 18c, and another passage passing through the air chamber 1.6 and a communication hole 20 and communicating with the second heat accumulative members 18b and 18d. Then, butterfly valves 22 and 23 are concurrently changed over in operation, the combustion secondary air A2 and the discharged gas F passing passages are changed over and they pass through the adjoining heat accumulation members 18a, 18c (18b, 18d) alternatively. |
