an upward air burner

Abstract

The invention relates to an upward air intake burner, which includes an outer ring ejector tube, and is characterized in that: the outer ring ejector tube includes at least two sub-injection tubes, and the gas outlet of the upstream sub-injection tube is end stretches into the gas inlet end of the downstream sub-extractor tube, and the length of the downstream sub-extractor tube is greater than the length of the upstream sub-extractor tube adjacent to it. Compared with the prior art, The advantage of the present invention is that the outer ring injection pipe of the upward air inlet burner is composed of at least two sub-injection pipes in communication, which can improve the injection ability and prevent the gas and primary air from colliding in different directions and collide with each other, further improving Improve the uniformity of primary air and gas mixing and increase the primary air intake rate to effectively reduce kinetic energy loss and make it spread evenly, so that the flame of the upward air burner is short, uniform and powerful, and there will be no yellow flames, tempering, etc. defect.

Description

technical field [0001] The invention relates to the technical field of household kitchen utensils, in particular to an upward air intake burner. Background technique [0002] At present, many gas cookers have begun to use fully upward air-intake burners. Since the complete upward air-intake burners burn, the primary and secondary air required for combustion come from the upper part of the cooker panel, so the chassis of the gas cooker It can be fully sealed. Compared with the traditional bottom air intake structure burner, the completely upward air intake burner is not only safer to use, but also can well solve the problem of stove flameout caused by opening and closing the cabinet door. However, the traditional completely upward air-intake burner is realized through the gap between the air-mixing chamber and the base when the primary air is supplemented. The problem caused by this is that there is a gap between the air-mixing chamber and the base. After the mounting screws...

AI Technical Summary

Problems solved by technology

However, the traditional completely upward air-intake burner is realized through the gap between the air-mixing chamber and the base when the primary air is supplemented. The problem caused by this is that there is a gap between the air-mixing chamber and the base. After the installation screws are installed, the installation screws can be seen from the outside of the burner, resulting in an unattractive appearance of the burner

Moreover, after a gap is set between the base and the air mixing chamber, the overflow will flow through the gap into the base and the circular basin-shaped main body located under the panel, that is, the term "bottom cup". There are many problems in user maintenance and cleaning. Inconvenient, and if the overflow is not cleaned for a long time, it will affect the normal use of the burner

[0003] Among them, the structure of the "bottom cup" makes the outlet of the ejection tube and the mixed gas channel often have a sharp bend, which obviously increases the ejection resistance. Such a design is such as the Chinese utility model with the patent number ZL201120156854.0 (authorized announcement number CN202082922U). The new patent "Gas Burner" has poor injection effect. At the same time, the primary air supplied by this type of upward air-intake burner from above the panel enters the "bottom cup" by using the negative pressure generated by the nozzle spraying gas, which is easy to cause The air flow distribution of the primary air is uneven, which affects the primary air coefficient to a certain extent, so that the pressure of the gas flowing out of the fire holes arranged along the circumferential direction of the outer ring fire cover or the inner ring fire cover is uneven, resulting in the generation of the outer ring fire cover. The flame of the inner fire produced by the outer ring fire or the inner ring fire cover is not uniform. At the same time, the second injection tube and the first injection tube of this type of burner are set integrally with the "bottom cup" or connected with the bottom cup. The separate setting of the cup, whether it is the problem of poor ejection effect caused by the integrated setting with the "bottom cup", or the safety hazard caused by air leakage caused by the seam caused by the separate setting with the bottom cup, Both need to make further improvements to the existing upward air-intake burners

For this reason, the "bottom cup" structure is omitted from the existing upward air-intake burner, and the burner part is directly positioned on the panel, such as a Chinese utility model patent "Swirling Flow" whose patent number is ZL201420238794.0 (the authorized announcement number is CN203980278U). Combination burner head with upper air intake >> It includes an annular injection mixing plate, a vent pipe, and a nozzle connected with the air pipe. The cover and the corresponding injection mixing plate form a groove, and the injection mixing plate is provided with a convex injection tube upper cover corresponding to the introduction groove, and the injection tube upper cover and the injection tube lower cover form an injection tube. The ejector pipe is annularly arranged on the ejector mixing disc, one end of the ejector tube is open to the nozzle, and the other end is opened in the ejector mixing disc cavity; the cavity of the ejector mixing disc The open end of the standpipe communicates with the outer ring burner; the center of the injection mixing disc is provided with a hollow standpipe with a bottom cover, and the side of the standpipe is provided with a conduit communicating with the nozzle, and the open end of the standpipe is connected with the internal combustion Although the furnace head adopts two gas channels in an annular layout, the gas forms a circular flow to increase the oxygen absorption effect, and at the same time communicates with the outer ring burner to improve the combustion effect, but the injection tube still has the problem of insufficient injection capacity. needs further improvement

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