JPS54111141A - Gas burner - Google Patents

Abstract

PURPOSE: To provide a gas burner wherein the generation of lift phenomena of internal flames is inhibited and stable combustion may be achieved by surrounding the vicinity of internal flame holes by a vertical wall.

CONSTITUTION: A burner 17 and a mixing pipe 18 are fixed at predetermined positions. Mixed air flows into a mixing chamber 19 for fully mixing, flowing into a main flame hole 20 and internal flame holes 22, 23 in the burner 17, being jetted therefrom to form flames 21, 24, 25. There is provided a flame-protecting wall 27 having a height (h) 0.5-3 times larger than a diameter (d) of the internal flame hole 22 in the vicinity of the internal flame hole 22, that is, at a place of l=d-3d from the center of the internal flame hole 22. A space section with a distance of l and a height of h formed between the wall 27 and the flame hole 22 becomes an area of negative pressure by an injection energy of the mixed air jetted through the internal flame hole 22. At the same time, a spiral current generates in the space section, and the internal flames sticking to each other. thus, lift combustion may be eliminated even in the simply vertical, internal flame hole 22 of single hole processing.

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