High-efficient inner flame burner

The utility model discloses a highly effective inner flame burner. The burner comprises a jamb, a fire-separating device arranged at the jamb, an outer annular burner arranged at the fire-separating device, which is characterized in that the upper end of the fire-separating device is provided with a plurality of conjunctive airways communicated with the fire-separating device and the outer annular burner, a fire-separating device cavity is formed between the fire-separating device and the outer annular burner, a jamb cavity is formed between the fire-separating device and the jamb, and the connecting structure of the air spout and the ejecting pipe and the shape of the fire slot are improved, therefore the burner is not easy to temper, thereby getting good primary air ejection and reducing the CO content, simultaneously making the flame concentrate towards the direction of the center portion of the bottom of a pan when burning, thereby reducing the radiate out heat, and improving heat efficiency to between 60 percent and 67 percent.