Outer burner cap with flame avoiding and flame propagation properties

Abstract

The invention relates to an outer burner cap with flame avoiding and flame propagation properties. The outer burner cap comprises an outer burner cap body and a flame leading plate; the outer burner cap body comprises an outer burner cap body outer ring and an outer burner cap body inner ring; an upper row of through flame holes and a lower row of through flame holes are formed in the outer burnercap body outer ring; the upper row of through flame holes are smaller than the lower row of through flame holes; the upper and lower rows of through flame holes are discontinuously distributed on theouter burner cap, thereby ensuring that stove stand feet can be avoided from flame; flame propagation grooves are formed in the positions, where the upper and lower rows of through flame holes are discontinuously distributed, of the outer burner cap body outer ring, and communicate with main burning through flame holes, namely the lower row of through flame holes; the flame leading plate is arranged on the outer burner cap body; and ignition holes are formed in the positions, corresponding to the flame leading plate, of the outer burner cap body inner ring. The outer burner cap has the beneficial effects that the upper row of through flame holes are smaller than the lower row of through flame holes, so that main flame from the lower row of through flame holes can get in sufficient contactwith the outside air, and the stability of the whole flame can be ensured through flame stabilizing holes, namely the upper row of through flame holes; furthermore, all the through flame holes are disconnected at certain angles, so that the service life of a stove stand can be prolonged and the content of CO in burning products can be lowered; and the flame avoiding positions of the outer burnercap body outer ring are connected by adopting the flame propagation grooves, so that the flame propagation reliability can be ensured.

Description

technical field [0001] The invention relates to an outer fire cover of a burner with fire avoidance and fire transmission performances. Background technique [0002] In the existing burner outer flame cover, the large flame holes are generally placed in the upper row, and the flame-stabilizing holes are placed in the lower row. Although this can play a good role in flame stabilization, the flame-stabilizing flame has a negative effect on the absorption of secondary air by the main fire. Larger obstacles are not conducive to reducing the CO content in the combustion exhaust, resulting in insufficient flame combustion. In addition, the four fire-avoiding positions of the existing burner outer fire cover generally use small fire holes for transition, the flame continuity is not good, and poor fire transmission is prone to occur. In addition, the fire transmission flame is longer, and the fire avoidance performance is not good. Contents of the invention [0003] The purpose ...

AI Technical Summary

Problems solved by technology

[0002] In the existing burner outer flame cover, the large flame holes are generally placed in the upper row, and the flame stabilization holes are placed in the lower row. Although this can play a good role in flame stabilization, the flame stabilization has a negative impact on the absorption of secondary air by the main fire. Larger obstacles are not conducive to reducing the CO content in the combustion exhaust, resulting in insufficient flame combustion

In addition, the four fire-avoiding positions of the existing burner outer fire cover generally use small fire holes for transition, the flame continuity is not good, and poor fire transmission is prone to occur

In addition, the fire transmission flame is longer, and the fire avoidance performance is not good

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