Disclosed is a humidifying
air heating furnace. An intermediate-layer sleeve container is arranged on the outside of an inner container, an outer-layer sleeve container is disposed on the outside of the intermediate-layer sleeve container, ventilating malleable
cast iron fire bars are disposed on the lower portion of the inner container, malleable
cast iron radiating pipes are arranged on the upper portion of the inner container, a secondary
combustion chamber is further disposed above the inner container, a water tank and a hot air outlet are disposed on the left side of the secondary
combustion chamber, a water adding opening and an indoor auxiliary humidifying opening are disposed on the outside of the water tank, a water tank heating
pipe is arranged in the water tank, a hot
air heating pipe is arranged inside the hot air outlet, a
smoke outlet is disposed on the left side of the water tank, a
snail type
air blower connecting opening is arranged on the outer-layer sleeve container, and a secondary
combustion chamber radiating air
inlet channel is arranged above the
air blower connecting opening. Air is induced by an induced draft fan to realize combustion supporting, after the temperature of the furnace exceeds 50 DEG C, an
air blower delivers
cold air to an
air channel between the outer-layer sleeve container and the intermediate-layer sleeve container, the
cold air is respectively delivered to the surface of the inner container, the ventilating fire bars and the malleable
cast iron radiating pipes, and hot air is delivered from a hot air zone to a cultivation room via the air outlet. The humidifying
air heating furnace has the advantages that heat exchange efficiency is high, temperature rise is fast,
noise is low,
smoke leakage is avoided, heat-insulation and energy-saving effects are good, and the humidifying air
heating furnace is simple in operation and convenient in maintenance.