| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a combustion apparatus capable of suppressing the generation of nitrogen oxides. <P>SOLUTION: This combustion apparatus 20 comprises a burner 3 burning the mixed gas of fuel and combustion air 21, a combustion tube 6 formed on the burner 3 and surrounding flame, a fuel supply device 13 supplying the fuel to the burner 3, a combustion blower 5 taking external air therein through a suction passage 8 and supplying the air as the combustion air 21 to the burner 3, and a convection blower 9 taking the external air as convection air 22 therein, mixing the combustion gas 24 exhausted from a take-in combustion chamber 6 with the convection air 22, and blowing the mixed air from a hot air blowout port 10. The combustion apparatus also comprises an exhaust gas circulation conduit 7 installed so as to lead from the inside of the combustion tube 6 to the suction passage 8 and mixing a part of the combustion gas 24 with the combustion air 21. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
