Burner cap for gas stove

Abstract

The invention relates to a burner cap for a gas stove. The burner cap is characterized by comprising an annular body. A gas mixing chamber is formed among an annular top wall of the body, and an innerannular wall and an outer annular wall stretching downward vertically or obliquely from an inside edge and an outside edge of the annular top wall, separately. The gas mixing chamber is internally provided with an air supplementing chamber which is isolated relatively. The air supplementing chamber is at least provided with one air inlet communicating to external air by fluid and one first main fire hole communicating to the gas mixing chamber. Compared with the prior art, the burner cap has the advantages that rather than supplementing secondary air for an inner ring particularly through thegas mixing chamber of a burner, the burner cap capable of supplementing secondary air by itself is provided; the air supplementing chamber which is isolated relatively is arranged in the gas mixing chamber of the burner cap, and the secondary air enters the gas mixing chamber through the air inlets and is buffered to prevent flame lift as the gas outlet speed of the first main fire hole is too fast.

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

Images