Petal type big flame cover and combustor provided with same

Abstract

The invention discloses a petal type big flame cover and a combustor provided with the same. The petal type big flame cover at least comprises an upper surface. A plurality of bosses are arranged on the upper surface at intervals. A channel for supplementing secondary air is formed between every two adjacent bosses. Each boss is provided with a first surface with the high exterior and the low interior, and a plurality of side faces, wherein the first surface inclines inwards, and flame outlet holes are formed in the first surface or the multiple side faces. A concave table is formed on the portion, close to one side of the center of the big flame cover, of each channel for supplementing the secondary air. The height of each concave table is smaller than the height of each boss. A flame conveying groove used for being connected with flames of an inner ring and an outer ring is formed in each boss. The petal type big flame cover has the advantages that the flame outlet holes are formed reasonably, flames are distributed uniformly, and the heat efficiency is high.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a petal-type fire cover and a burner equipped with a petal-type fire cover. Background technique [0002] Atmospheric burners commonly used now generally include a large fire cover, a small fire cover, a fire distributor and an injection part. Wherein, the upper surface of the large fire cover is generally a plane, or the center part is a plane, and the outer ring is inclined outward. When the burner of this plane structure has liquid overflowing in the pot, the liquid flowing out will block the fire hole, and then Reduce the effective number of fire outlets, and abnormal combustion occurs. [0003] The fire holes on the existing large fire cover are generally distributed evenly along the circumference of the large fire cover, or distributed along the radial direction. When the burner burns, the fire from the fire holes will form a barrier, preventing the supply of secondary air...

AI Technical Summary

Problems solved by technology

[0003] The fire holes on the existing large fire cover are generally distributed evenly along the circumference of the large fire cover, or distributed along the radial direction. When the burner burns, the fire from the fire holes will form a barrier, preventing the supply of secondary air, which is easy to cause Insufficient gas combustion, the thermal efficiency of the burner with such a large fire cover is generally not too high

Therefore, not only a lot of energy is wasted, but also the thermal efficiency of the burner is reduced

At the same time, when the fire holes are evenly distributed along the circumferential surface of the fire cover, the burning flame will easily burn to the pot frame, resulting in a large amount of smoke, which will adversely affect the health of the user

[0004] In addition, because the fire outlet is set on the outer ring of the fire cover, it is easy to cause uneven heating of the bottom of the pot. In order to achieve the same heating effect, not only the user needs to spend more time, but also consumes more gas resources, resulting in waste of energy

[0005] In the existing burner, the fire transfer groove is set on the surface of the fire cover, when liquid overflows in the pot, the liquid flowing out will block the fire transfer groove, which will easily cause ignition problems

Images