Upper air inlet burner and cooker comprising same

Abstract

The invention relates to an upper air inlet burner. The upper air inlet burner comprises a base for accommodating a first injection pipe, a connector arranged on the base and a first burner cap connected to the connector, wherein the connector is provided with a vertical first gas channel and can cover the base; a first gas mixing chamber located at the center is formed between the first burner cap and the connector; and the first gas mixing chamber corresponds to the first gas channel. The upper air inlet burner is characterized in that the first injection pipe is transversely arranged in thebase; an inner cavity of the first injection pipe comprises a transition section and a horn section in sequence in the gas flow direction from a gas inlet to a gas outlet; and a buffer cavity is formed between the horn section and the lower surface of the first gas channel. Compared with the prior art, the upper air inlet burner has the advantages that the first injection pipe is arranged in thebase and provided with the buffer cavity; the length of the first injection pipe is effectively increased through the buffer cavity; and meanwhile, through arrangement of the buffer cavity, a primaryair / gas mixture injected from the gas outlet end of the first injection pipe can have a buffer space.

Description

technical field [0001] The invention relates to a burner for a gas cooker, in particular to an upward air-intake burner for a cooker with multiple nozzles. 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 moun...

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

In addition, the structure of the "bottom cup" makes the outlet of the ejector tube and the mixed gas channel connect with a sharp bend, which significantly increases the ejection resistance. Such a design is such as the Chinese patent No. ZL201120156854.0 (authorized announcement No. CN202082922U). The utility model patent "Gas Burner" has a poor ejection 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" using the negative pressure generated by the nozzle jetting gas, which is easy 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 formation of the outer ring fire cover. The flame of the inner ring fire produced by the outer ring fire or the inner ring fire cover is not uniform. At the same time, the second ejector tube and the first ejector tube of this type of burner are integrated with the "bottom cup" or integrated with the "bottom cup". The separate setting of the bottom 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 the air leakage caused by the seam caused by the separate setting of the bottom cup , both need to make further improvements to the existing upward air-intake burners

In addition, there is a class of Chinese invention patent application publication "A Multi-Nozzle, Large Flow, and Completely Updraft Embedded Burner for Household Gas Stove" (publication number CN101446415A) such as the application number of which is 200810220263.8. The inner and outer nozzles corresponding to the ring ejector are respectively arranged on both sides within the diameter range of the burner, which can effectively improve the limitation of the short length of the ejector tube, and at the same time realize the independent adjustment of the inner and outer fires, and the combustion power is relatively large , the pursuit of high-power up-inlet burners has become the mainstream trend, but because the inner and outer ring ejectors are still set in the "bottom cup", the overall height of the burner is still high, and the overall aesthetics is poor

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