Burner consisting of partially premixed burner and completely premixed burner

Abstract

The invention relates to a burner consisting of a partially premixed burner and a completely premixed burner, and aims to output partially premixed gas with primary air ratio alpha of less than 1.0 and completely premixed gas with primary air ratio alpha of more than 1.0 at the same time, so that heat generated by the combustion of the partially premixed gas is provided for the combustion of the completely premixed gas, excess air after the combustion of the completely premixed gas is provided for the combustion of the partially premixed gas, and the combustion performance is improved under the interaction of the two mixed gases. The combined burner comprises a partially premixed gas distributor, a distributor ring, a fire hole, a completely premixed gas distributor, a distributor cap, a jet hole, a gas booster and the like. The completely premixed burner can realize the stable, quick and sufficient combustion of the completely premixed gas without a substantive flame stabilizing carrier; the energy loss of gas equipment per se can be greatly reduced; heat output intensity can be improved; and the energy efficiency ratio of the gas equipment can be improved.

Description

Technical field: [0001] The invention relates to a combined gas burner, which can be equipped on boilers, industrial heating furnaces, Chinese cooking stoves, metallurgical furnaces, spray guns and other gas equipment. Background technique: [0002] At present, when the fully premixed burner organizes gas for combustion, all of them use the heat generated by the combustion of the completely premixed gas that flows out a little earlier, and transfer it to the fully premixed gas that flows out later, and the fully premixed gas that flows out later Under the condition that the gas has all the heat required for combustion, the combustion reaction can continue to proceed stably and fully. This kind of burner, which supports the continuous combustion reaction with the heat conditions of the complete premixed gas itself, must have a special flame-stabilizing carrier to use the friction or collision between the flame-stabilizing carrier and the completely premixed gas to promote the...

AI Technical Summary

Problems solved by technology

Since the heat required for the complete combustion of the complete premixed gas is more, when all of this part of the heat is provided by the heat generated by the combustion of the previously outflowed complete premixed gas, this requires the return heat or the heat transferred by the flame-stabilizing carrier. The amount of heat must be sufficient. In this case, the heat absorbed by the flame-stabilizing carrier itself will increase, and the temperature of the flame-stabilizing carrier will also increase significantly. Therefore, when the current fully premixed burner is equipped with a flame-stabilizing carrier, Higher requirements will be put forward for the heat resistance, durability, heat insulation and heat preservation performance of the materials used. Constrained by such conditions, it is difficult for the complete premixed burner to be small in size, light in weight, low in heat storage, and structurally simple and low cost

In summary, it is the crux of the problem that the fully premixed burner and the fully premixed combustion method cannot be widely used.

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