| 摘要 |
PROBLEM TO BE SOLVED: To dispense with a material of high temperature durability for a burner body, in a rich-lean burner having a thin flame port 2, a blind gap 4 positioned at least at one side in a lateral direction of the thin flame port, a thick flame port 3 positioned outside in the lateral direction, of the blind gap, and further including the burner body having a pair of side plates 51, a burner cap 6 having a side plate 61 for covering the burner body from at least one side in the lateral direction, and a straightening member 7 having a plurality of straightening vanes for dividing the thin flame port into a plurality of regions in the lateral direction, as burner components.SOLUTION: An upper end of a side plate 51 of a burner body 5 is lower than an upper end of a side plate 61 of a burner cap 6, and upper ends of straightening vanes. The straightening member 7 is positioned at an outer side in a lateral direction, with respect to the outer straightening vane 71 out, and includes: a partitioning plate 74 extended above the side plate 51 of the burner body 5. A blind gap 4 is defined between the partitioning plate 74 and the outer straightening vane 71out, and a thick flame port 3 is defined between the partitioning plate 74 and the side plate 61 of the burner cap 6. |
