| 摘要 |
PROBLEM TO BE SOLVED: To enable a temperature field corresponding to a distribution of heat absorption of a heated object to be formed by a method wherein a first combustion device and a second combustion device are provided with a different number of burners and total amounts of combustion of burners at both combustion devices are made to be equal from each other. SOLUTION: A first combustion device 2 is provided with one burner 4. A second combustion device 3 is provided with three burners 5. The burner 4 of the first combustion device 2 is installed at a furnace wall 1a. Burners 5 of the second combustion device 3 are equally spaced apart and installed at the furnace wall 1b opposing against the furnace wall 1a. Three burners 5 constituting the second combustion device 3 have the same structure and combustion amount. Then, combustion is controlled in such a way that a total combustion amount of the burner 4 of the first combustion device 2 and a total combustion amount of three burners of the second combustion device 3 become equal from each other. That is, a combustion amount of the burner 4 of the second combustion device 3 is defined as Q1 and each of the combustion amounts of each of the three burners 5 of the second combustion device 3 is defined as Q2 , a relation of Q1 =Q2 ×3 is satisfied. |
