Internal-burning external-heated heat exchanging apparatus

The utility model relates to an internal-burning external-heated heat exchanging apparatus, which belongs to a novel apparatus of an industrial heating system. The utility model can solve and replace the external-burning external-heated traditional heating mode of the heating of the existing boiler. The utility model is mainly characterized in that the utility model has the method that burning chambers are arranged in apparatuses the shapes of which are a boiler body shape and a water tank body shape to burn. The apparatus of the utility model is mainly composed of a burner, the burning chambers, a centrifugal fan, a fume exhaust pipe, a water inlet pipe and a water outlet pipe, wherein the outer wall of the burning chamber with a pipe type structure is additionally provided with a heat radiating piece type apparatus and the inner wall of the burning chamber is additionally provided with a flow flexing pipe piece type apparatus. The utility model has the advantages that compared with the method of the original heating apparatus, the quantity of heated bodies and heated media can be increased, the burning gas exhaust temperature can be reduced and the thermal efficiency can be increased. Additionally, the safety, the environmental protection property and the economic benefit of the utility model all can be increased.