A fire cover for a gas stove

Abstract

The invention relates to a fire cover for a gas cooker, which includes a fire cover and an air mixing chamber, and is characterized in that: there is a relatively isolated air supplementary chamber in the air mixing chamber, and the air supplementary chamber is opened on at least one of the walls. There is an air inlet hole in fluid communication with the outside air, and the outer ring wall is provided with a first air outlet hole in fluid communication with the air supplement room at a position corresponding to the air supplement room, and the outer ring wall is connected to the first air outlet hole There is at least one main fire hole communicating with the gas mixing chamber at the bottom of the bottom along the circumference, and the first air outlet communicates with the main fire hole corresponding to the first air outlet, which is similar to the prior art Compared with this, the present invention has the advantage that a relatively isolated air replenishment chamber is set in the gas mixing chamber of the fire cover, and the air replenishment chamber is independently supplied to the main fire hole through the air supplement chamber, which can ensure the air in the main fire hole in the outer ring wall. The replenishment amount, the combustion condition of the first fire outlet is stable, the material is saved and the manufacturing cost will be 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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