Two-ring fire burner and energy efficiency promotion method thereof

Abstract

The invention relates to a two-ring fire burner. The two-ring fire burner comprises an outer ring nozzle, an inner ring nozzle, an inner ring ejector, an outer ring ejector, a mixing disc, an air separation base, a fire cover base, a fire cover, a thermocouple and an ignition needle, wherein an inner ring mixing cavity and an outer ring mixing cavity are arranged on the mixing disc; the outer ring nozzle is connected with the outer ring ejector; the outer ring ejector is communicated with the outer ring mixing cavity; the inner ring nozzle is connected with the inner ring ejector; the inner ring ejector is communicated with the inner ring mixing cavity; the air separation base covers the mixing disc; the fire cover base is mounted on the air separation base; the fire cover covers the fire cover base; the fire cover and the fire cover base are annular discs, are provided with round holes in centers, and are assembled to form an inner ring fire outlet hole and an outer ring fire outlet hole; the thermocouple and the ignition needle are mounted on the air separation base, and are positioned in the round holes; a secondary air channel is formed between the air separation base and the fire cover base; and cavities in the round holes are communicated with external atmosphere through the secondary air channel.

Description

technical field [0001] The invention relates to the technical field of household gas stoves, in particular to a two-ring fire burner and a method for improving energy efficiency thereof. Background technique [0002] Atmospheric burners on the market are burners designed according to the partial premixed combustion method. Its working principle is: under a certain pressure, the gas flows out of the nozzle at a certain flow rate and enters the suction contraction tube, and the gas is sucked in by its own energy. Air once. The gas is mixed with the primary air in the ejector, then flows out through the fire hole of the head, and is mixed with the secondary air again to form a blue flame composed of inner and outer cones. This type of atmospheric burner is divided into two-ring fire and three-ring fire according to the number of fire rings. They often encounter the following technical bottlenecks while improving the energy efficiency of the burner: [0003] First, the thermal...

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Problems solved by technology

Second, the CO in the flue gas is relatively high. It is known that the smaller the diameter, the higher the energy efficiency. Therefore, when designing the burner head, the principle is to minimize the diameter of the head. Due to the limitation of the diameter, the relative space between the outer, middle and inner rings Smaller, the flames cross each other during combustion and there is a defect that the inner fire and the middle ring fire grab the secondary air, resulting in high CO in the flue gas, and the improvement of energy efficiency encounters a technical bottleneck

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