| 摘要 |
<p>PURPOSE:To prolong the useful life of a controlling circuit part, by a method wherein a burner and a controlling circuit part which are covered as one body by a cover are partitioned from each other by a heat-insulating plate. CONSTITUTION:A combustion chamber 6 is provided at the lower part of a drum body 8, a burner 2 is provided in the chamber 6, and the controlling circuit part 5 is provided on a side wall of an outer casing 10. The burner 2 and the circuit part 5 are covered as one body by a cover 3, and are partitioned from each other by a heat-insulating plate 11. The cover 3 is provided with a gallery 13, and an air intake port 5 is opened at a lower part of the cover 3.</p> |
