A burner for a gas stove

Abstract

The present invention relates to a burner for a gas cooker, which is characterized in that: it includes a base with a sandwich structure, the base includes a concave cavity in the center and a peripheral cavity surrounding the concave cavity, a first connecting body and The second connecting body, the first cover connected to the first connecting body, the second cover connected to the second connecting body, and the guide chamber are used to transmit the primary air and gas from the first air mixing chamber to the guide The transmission channel of the flow chamber, compared with the prior art, the advantage of the present invention is that a flow guide chamber is relatively isolated in the second gas mixing chamber, so that each thermocouple has a relatively independent "fire chamber", which can ensure The heated area where the thermocouple is in contact with the flame is not too large or too small. The thermocouple is not only heated enough to generate sufficient thermoelectric potential, but also will not burn out the thermocouple due to too much contact with the flame from the fire hole.

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. 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 are instal...

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 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" to block the injector, which is harmful to the user's maintenance, There are many inconveniences in cleaning, and if the overflow is not cleaned for a long time, it will affect the normal use of the burner

[0003] At the same time, the primary air supplemented by this type of upper air intake burner from above the panel enters the "bottom cup" by using the negative pressure generated by the nozzle gas injection, which is likely to cause uneven distribution of the primary air flow and affect the primary air flow to a certain extent. coefficient, 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 outer ring fire generated by the outer ring fire cover or the inner ring fire generated by the inner ring fire cover. The flame is not uniform, and the incomplete mixing of gas and primary air will also cause the flame length of the center fire and the outer ring fire to be different. At the same time, the ejector tube is limited by the height of the upper air intake burner, so it cannot be made too long, resulting in the channel The resistance is large, and the yellow flame is easy to appear when the power is high, especially in the small fire gear, the yellow flame is more obvious

At the same time, there is another phenomenon that the outer circumference of the inner ring fire cover is usually provided with an ignition needle for ignition and a thermocouple for fire protection. If the flow rate of gas injection is too fast, it will cause the flame to leave the flame or lead to a decrease in the success rate of ignition. In order to improve its fire protection performance, the thermocouple needs to ensure that it has sufficient gas supply. The ignition has higher requirements for the speed of gas. Although thermocouples have relatively weak requirements on the speed of gas, the amount of gas is more important to thermocouples. In summary, the existing burners need to be further improved.

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