Apparatus for producing a heating fluid

摘要

A heat exchange apparatus including a generally cylindrical hollow housing having an upper end and a lower end, and a heating device disposed in the lower portion of the housing. A heating coil assembly is disposed within the housing over the heating device, and includes a radially inner coil bank and a radially outer coil bank adjacent the inner wall of the housing. An intermediate coil bank is connected between the inner and outer coil bank and includes a plurality of helical convolutions of increasing diameter as they successively occur in an axial direction from the lower end of the housing toward the upper end thereof. A baffle frame assembly interconnects and spacially orients the inner and intermediate coil banks, and radially outwardly deflects heated gases from the heating device.