| 摘要 |
PROBLEM TO BE SOLVED: To provide high heat efficiency by securing a flame hole composition which minimizes deformation of a flame hole caused by external force or thermal expansion, and by maintaining favorable combustion in regard to a burner used in a cooking stove or the like using gas or oil as fuel. SOLUTION: A two stage type protruding part 8 is provided toward an outer circumferential direction on a flame hole plate 5, and a first plane part 9 and a second plane part 10 are formed on a top face of a first protruding part 6 and a top face of a second protruding part 7. In a slit like flame hole 13 provided in the second protruding part 7, a certain angle is formed with a straight line connecting an outer circumference side opening end 17 and a center of the flame hole plate 5, using a straight line connecting an inner circumference side opening end 16 and the center of the flame hole plate 5 as a base line. A shape of swirling flame 20 is thereby optimized by changing the angle, deformation and overheating of the slit like flame hole 13 is suppressed, and at the same time, high heat efficiency is provided. COPYRIGHT: (C)2007,JPO&INPIT
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