Combustor and application thereof

Abstract

The invention provides a combustor. The combustor comprises a shell, a draught fan, a burner head and an ignition mechanism, and an air inlet of the shell and the input end of the burner head form a pressure equalizing cavity; the ignition mechanism is arranged at the output end of the burner head, and the burner head comprises a main frame body and at least one stable combustion isolation belt; the interior of the main frame body is divided into at least two ventilation areas in the direction of a gas channel through the stable combustion isolation belt; a plurality of separation mechanisms are arranged in each ventilation area, and the ventilation areas are divided into a plurality of through holes distributed in the direction of the gas channel through the separation mechanisms; and thethrough holes are used for allowing mixed gas to pass through and strengthening the mixing effect of the gas and air, and combustion flame of the combustion face of the main frame body can be dividedinto independent flames through the stable combustion isolation belt. According to the combustor, the power of a combustion component can be changed with the area of the combustor, and fuel gas and air are highly and evenly mixed after entering micropore channels, and ignited to form even premixed flame after being sprayed out from the micropore channels; and the flames are independent through arrangement of the isolation belt, and the flames are stable, clean and efficient.

Description

technical field [0001] The invention relates to the technical field of combustion equipment, in particular to a burner and its application. Background technique [0002] The burner is a general term for devices that make fuel and air spray out and combust in a certain way. Burners are divided into industrial burners, burners, civil burners, and special burners according to types and application fields. Burners commonly used in households include gas boilers, gas stoves, high-fire gas stoves, infrared gas stoves, and combustion heads for gas water heaters. [0003] The power of the gas-fired boiler is above 200kW. The gas is sprayed out from small holes, mixed with the air blown into the large cylinder by the fan, and forms an integral cylindrical conical flame after ignition. Among them, the traditional burner uses gas mixed with air in the combustion disc and ignites. It belongs to diffusion flame combustion. It has simple structure, mature technology and low cost, but th...

AI Technical Summary

Problems solved by technology

In the traditional pipe-type fire row, the gas injects the primary air into the pipe structure and mixes it. After the premixed gas is ignited, it diffuses and contacts with the secondary air to complete the combustion process. Its structure is simple, the technology is mature, and the cost is low. However, the CO and NOx emission concentration High; the fire row structure of thick and thin fire row is similar to the pipe type fire row, and the reducing atmosphere is created by staged combustion, and NOx is reduced to N 2 To achieve the purpose of reducing nitrogen, but its structure is complex and costly. Although the NOx emission concentration is low, the CO emission concentration is high; the water-cooled fire row is mainly a combination of a traditional fire row and a water-cooled copper tube. Nitrogen has mature technology, high cost, and low NOx emission concentration, but its structure is complex and CO emission concentration is high; the main body of the fully premixed metal fiber surface burner is a temperature-resistant metal fiber mesh, which needs to be used with a fully premixed fan and valve group , by shortening the flame length to avoid local high temperature and reducing the combustion time to achieve nitrogen reduction, although the NOx and CO emission concentrations are low, it has the disadvantages of high cost, burner blockage and flashback risk

[0008] The notification number is CN 108006629 A "Burner and Gas Water Heater" which discloses a burner with a first rich combustion chamber, a second rich combustion chamber and a light combustion chamber, however, one of the combustion units actually Only one flame is formed. The middle part of the flame is a light burning flame, and the two sides are thick burning flames. The unburned fuel of the thick burning flame and the excess oxygen of the light flame are combined at the end of the flame for secondary combustion. The setting of the second blind passage is to play the role of separating thick and thin flames, and it cannot separate the whole flame

[0009] To sum up, the existing mature technology with low cost of combustion components has relatively high pollutant emissions, which is not conducive to environmental protection; while the technology with relatively low pollutant emission is not conducive to popularization due to its high cost

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