| 摘要 |
A double burner structure is provided to stably introduce secondary air by forming a secondary air inlet channel between a large burner head and a large burner cap. A double burner structure comprises a burner body having an interior with a small burner unit; a burner head which is mounted on the burner body, and includes a hole for penetration of the small burner unit, an air flow channel(246) for introducing outdoor air to the hole, and an over injection prevention protrusion protruded from an inlet of the air flow channel; and a burner cap which is mounted on the burner head, and has a plurality of flame holes(247) formed directly above the air flow channel. The size of lower diameter of the plurality of flame holes is smaller than the size of upper diameter.
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