FUEL GAS FLOW REGULATOR FOR GAS BURNER

摘要

PROBLEM TO BE SOLVED: To enhance heating efficiency while suppressing generation of CO or NOx by an arrangement wherein a flame is formed in a sub-flame hole only when the flame in main flame hole is restricted below a specified level and no flame is formed in the sub-flame hole during normal combustion so that combustion in the main flame hole is not obstructed. SOLUTION: A flow regulator 6 is provided with a gas channel 7 for supplying fuel gas to a mixing tube for main flame hole, and a gas channel 8 for supplying fuel gas to a mixing tube for sub-flame hole. The gas channel 7 is provided with a needle valve 9 for main flame hole and the gas channel 8 is provided with a needle valve 10 for sub-flame hole. The needle valves 9, 10 are interlocked to be driven through open/close operation of an open/close level 11. The needle valve 10 is opened only at the full-open position of the lever 11 and for a specified opening thereof close to the full-open position and the needle valve 10 is closed for other opening.