Ejecting pipe

Abstract

The invention relates to an ejecting pipe. A horn section, a transition section and a tail interface which is matched with a combustor furnace head are sequentially arranged in an internal chamber of the ejecting pipe along the direction from an inlet to an outlet. A throat opening is formed between the horn section and the transition section; an outer contour of the horn section is formed by a plurality of circles or a plurality of ellipses in an intersecting mode; the ellipses are approximate to circles; centers of the circles or centers of the ellipses are arranged in a same first circle and are uniformly distributed relative to a center of the first circle; nozzles which are matched with the ejecting pipe are arranged on centers of the circles or centers of the ellipses; the number of the nozzles is equal to the number of the circles or the number of the ellipses; a cross section of the horn section is gradually decreased; a shape of a cross section of the throat opening is the same with that of the horn section; the cross section area of the transition section is gradually increased from a cross section area the same as that of the throat opening to a cross section area the same as that of the tail interface. The ejecting pipe has the advantages of avoiding mutual interferences among airflows at the beginning of ejection, adding primary air supplementary amount, promoting mutual mixing of the airflows entering into the internal chamber of the ejecting pipe and the air, improving primary air coefficient, increasing ejecting capability and accordingly improving energy efficiency of a combustor.

Description

technical field [0001] The invention relates to a burner of a gas cooker, in particular to an injection tube. Background technique [0002] Energy saving and environmental protection is the theme of today's society. With the implementation of energy efficiency ratings, many daily necessities are labeled with energy efficiency labels, but gas stoves, which are indispensable to the family and are frequently used, have not been implemented for a long time. The reason is that the open heating mode of the gas cooker determines that it is very difficult to improve its energy efficiency, especially the most widely used atmospheric gas cooker. To improve the energy efficiency of the atmospheric burner, from the existing methods, reducing the distance between the heated pot and the flame so that the flame is centered can effectively improve the combustion efficiency, but the above method will lead to insufficient secondary air and insufficient air supplement It will greatly increase...

AI Technical Summary

Problems solved by technology

[0004] Traditional atmospheric burners generally use a single-nozzle injection tube, and the injection coefficient of a single nozzle is generally only about 0.45-0.65, and the flame length is uneven and weak

In order to enhance the ejection ability of the ejector pipe, burners using multi-nozzle ejector pipes have appeared on the market. The nozzle injection tubes will interfere with each other in the early stage of injection, which will affect the injection efficiency. After the gas is injected into the injection tube, it will not be fully mixed with the air entering the injection tube, which will affect the primary air coefficient and further affect the combustion of the burner. efficacy

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