| 摘要 |
PURPOSE:To reliably prevent the occurrence of poor combusion due to plugging by a method wherein, in a burning device, in which gaseous fuel is burnt in a short flame state by a burner having a mixing chamber, a porous body is located on the downstream side of the burner between the burner and a blower. CONSTITUTION:An annular burner 8, having a large number of slit burner ports 9 at the upper part thereof, is mounted on a fan case 3, provided at its lower part with a blower 7 having a fan 5 driven by a motor 4, and in a position facing a combustion tube 2. The burner 8 has an air feed port 17 for premixture open to a mixing chamber 11, and the mixing chamber 11 is communicated with a uniform chamber 12 through gas distributing holes 13... formed in a partition board 14. An air regulating body 21 having air regulating holes 19... is disposed on the downstream side of said feed port 17, and meanwhile, a porous body 23 is located on the upstream side of the feed port 17. On the downstream side of the porous body 23, a detecting end 25 of an air pressure detecting part is open to the peripheral wall of the fan case 3. |
