Fire cover for gas stove

Abstract

The invention relates to a fire cover for a gas stove. The fire cover includes a fire cover body and an air mixing chamber. The fire cover is characterized in that air supplementing chambers which arerelatively isolated are arranged in the air mixing chamber, at least one wall of each air supplementing chamber is provided with an air inlet hole in fluid communication with outside air, the outer ring wall is provided with a first air outlet hole in fluid communication with the air supplement chamber at the position corresponding to the air supplementing chamber, the outer ring wall is providedwith at least one main fire hole communicating with the air mixing chamber in the circumferential direction at the position below the first air outlet hole, and each first air outlet hole communicates with the main fire hole corresponding to the first air outlet hole. Compared with the prior art, the fire cover has the advantages that the air supplementing chambers which are relatively isolated are arranged in the air mixing chamber, air is supplemented to the main fire holes independently through the air supplementing chambers, the air supplementing amount in the main fire holes in the outerring walls can be ensured, the burning working condition of the first fire outlet holes is stable, and the material and manufacturing cost are reduced accordingly.

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] The primary air coefficient of existing atmospheric stove burners is generally 0.4-0.7, and the premixed air cannot reach the air volume required for complete combustion. In addition to various factors, a certain amount of secondary air is required, and in order to reduce CO emission, secondary air supplement should be as sufficient as possible. At present, there are various ways of replenishing air for stove burners. Generally, there are side air intake and bottom air intake. The air inlet is supplemented with secondary air, and the way of lower air intake is to open the lower air inlet at the base base, and the air under the cooker is supplemented with secondary air through the lower air inlet. Among them, although the way of side air intake has the advantages of small air intake resistance and large...

AI Technical Summary

Problems solved by technology

Among them, although the way of side air intake has the advantages of small air intake resistance and large air intake volume, there are still problems in the existing side air intake burners such as: due to the ejection effect of the combustion hot air flow, the internal and external fire The cover will entrain secondary air through the side air inlet of the air mixing chamber. The heat load of the inner ring is small, and the primary air coefficient is higher than that of the outer ring. However, the secondary air entrainment is insufficient. In order to distribute the secondary air reasonably and achieve full combustion of the inner and outer rings at the same time, and if the secondary air supplementary channel is too large, the amount of secondary air will be entrained and the smoke will be taken away. The increase of heat leads to low thermal efficiency; the secondary air supply channel is too small, and the insufficient secondary air supply will inevitably lead to incomplete combustion and excessive flue gas emissions

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