| 摘要 |
The invention relates to a cylindrical heat exchanger practicable for air heating or for indirect heating using for combustible DIESEL, combustible gas, propane etc. It is composed of a conical antechamber and a main cylindrical combustion chamber set both in a mutual angular disposition; furthermore, it bears for the first main pass of the flue gases flattened gas tubes radially arranged between two homocentric cylindrical surfaces the internal one forming the main combustion chamber and the external having, for accomodating the second and third pass of the flue gases, the shape of a cylindrical ring being uniform or divided into cylindrical arcs favouring the free expansion of the gas tubes as well as the expansion of the other heated surfaces of said heat exchanger. |
