The working principle of the hot blast stove, the core of the hot blast stove can be summed up in one sentence:
Fuel is burned to heat the air, and then the hot air is blown out for drying, heating or as process air.

1. Basic structure
It mainly consists of a few parts
Combustion chamber: Burns coal/gas/oil/biomass to generate high-temperature flue gas
Heat exchange chamber: It enables high-temperature flue gas and cold air to exchange heat
Fan: Air supply, smoke exhaust
Control system: Temperature control, fire control, and safety protection

2. Work process
Supply air
Cold air is drawn in by the fan from the air inlet and enters the heat exchange channel.
Combustion heating
The fuel burns in the combustion chamber, generating a large amount of high-temperature flue gas.
The flue gas does not blow directly onto the material but transfers heat to the air through the metal wall.
Heat exchange
Cold air absorbs the heat of flue gas and turns into hot air
The flue gas is cooled down and then discharged through the chimney
For exhaust use
Hot air is sent out from the air outlet for:
Drying of grains, medicinal materials and wood
Heating for workshops and greenhouses
Drying process for industrial production lines

3. Brief summary
The hot blast stove is
The fire generates heat → heats the air → The fan sends out the hot air
Meanwhile, the controller automatically controls the temperature. In case of over-temperature, flameout or malfunction, it will automatically stop fire for protection.