Working principle.
Fuel through the burner combustion, high-temperature flue gas, and with the enhancement of hot blast stove heat measures will heat of high temperature flue gas to the air is heated, the heat of high-temperature gas after the temperature is reduced to below 250 ° C discharge to the atmosphere. The air to be heated by selecting blower forced into hot air furnace, heat, temperature of hot air from the outlet to the rated &#118alue. When the upper limit temperature of hot air reaches the rated, burner will automatically stop the burning or combustion to turn small fire, when the temperature of hot air drops to the rated lower limit temperature, burner will rekindle run or turn the fire burning, heating speed is adjustable air valve to realize.
Characteristic.
Note: 1, can choose according to the direct or indirect heating fuel, gas stove.