Fire cover for gas stove

Abstract

The invention relates to a fire cover for a gas stove. The fire cover comprises an annular body, a gas mixing cavity, at least two main fire holes formed in the outer ring wall in the circumferentialdirection at intervals, at least two flame stabilizing holes located below the main fire holes and arranged in the circumferential direction at intervals, and a first separating part capable of dividing the gas mixing cavity into a first gas mixing cavity and a second gas mixing cavity. The first gas mixing cavity communicates with the flame stabilizing holes, and the second gas mixing cavity communicates with the main fire holes. Compared with the prior art, the fire cover has the advantages that the gas mixing cavity is divided into two parts through the first separating part arranged in thegas mixing cavity, the speed of mixed gas flow in the gas mixing cavity is reduced, and double insurance is added for flame stabilization of the main fire holes, the flame stabilizing holes below themain fire holes are used for pulling the root for stabilizing flame, meanwhile, the independent first gas mixing cavity is added for stabilizing the flame stabilizing holes, the flame stabilizing effect is good, and same fire power of the main fire holes and the flame stabilizing holes of the fire cover can be realized.

Description

technical field [0001] The invention relates to the field of household gas stoves, in particular to a fire cover adapted to a combustion stove. Background technique [0002] Tempering and flame stabilization have always been the focus of research and development of gas burners. Existing burners rely on the fire hole of the fire cover to control the strength of the fire hole, and set the flame stabilization hole to avoid backfire, but the general opening diameter of the fire hole is relatively small. If the gas outlet speed is too high, the flame stabilization effect cannot be achieved only through the flame stabilization hole; or the gas outlet speed appears, when the load required by the combustion device is small, if the gas is in Supply under low pressure, because the injection velocity into the combustion chamber is lower than the combustion velocity of the mixture in the combustion chamber, the flame will be generated on the inner surface of the fire cover facing the co...

AI Technical Summary

Problems solved by technology

[0003] In another case, the fire cover usually includes an inner ring fire cover and an outer ring fire cover, and the heating method for the pot body is basically a combination of the outer ring flame and the inner ring flame, but the center of the fire cover is still If there is no flame, the heating effect of the central position of the bottom of the pot will be poor. For this reason, the applicant provides a Chinese utility model patent "One Piece" as the patent No. ZL201420412292. A fire cover for a domestic gas stove and a burner using the fire cover" It discloses an inner ring fire cover that can integrate the inner ring and the middle ring and the combustion flame can be sprayed vertically upwards. The fire cover body has The inner ring wall and the outer ring wall, the central through hole is formed in the center of the inner ring wall, the ring channel is formed between the inner ring wall and the outer ring wall, there is a through hole at the bottom of the ring channel, and the upper cover is in the form of a sheet full of mesh holes This structure can make the combustion of the inner ring fire cover concentrated, and the heat loss taken away by the secondary air is less, so the combustion temperature is higher and the thermal efficiency is better; If the gas is released too quickly, it is easy to cause the flame to be separated. After the gas is released, the buffer partition or other technical means used in the above-mentioned fire cover are not used to achieve the effect of stabilizing the flame. Therefore, it is necessary to stabilize the fire cover. Improve the adaptability of the flame and the phenomenon of easy tempering

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