Atmospheric burners have shorter flames, stronger firepower and higher combustion temperatures than natural induced draft diffusion burners. It can burn various types of gases with relatively complete combustion and high combustion efficiency. Combustible low-pressure gas is used because air is inhaled by gas injection, so no air supply equipment is required. Compared with blast diffusion burners, it saves power and is easy to adjust. In addition, the jet burner has automatic adjustment characteristics. When the heat load of the burner changes within a certain range, the primary air coefficient can stabilize itself at the design value. Compared with fully premixed burners, atmospheric burners have a wide heat load adjustment range and strong adaptability, and can meet the needs of many processes.
The flame stability of atmospheric burners is not as good as that of diffusion burners, and they are not suitable for positive pressure furnaces. Since only part of the air required for combustion is premixed, not all the air, the fire hole thermal intensity and combustion temperature are higher than those of natural induced draft diffusion burners, but they are still limited and cannot meet the requirements of some processes. When the thermal load is large, the mechanism of the multi-flame burner is relatively bulky.
Multiflame atmospheric burners are widely used. They are most commonly used in gas appliances in households and public utilities, such as household gas stoves, water heaters, water boilers and canteen stoves. They are also used in small boilers and industrial furnaces. Single flame hole atmospheric burners are also widely used in small and medium-sized boilers and some industrial furnaces.