| 摘要 |
A transportable combustion air heater (1) comprises a transportable supporting frame (2), a housing (3) fixed to the frame (2), a cylindrical combustion chamber (14) arranged in housing (3), a cylindrical annular thermal exchange channel (24) formed around the combustion chamber, an external heating chamber (26) defining an annular fume channel (27) around the thermal exchange channel (24), in which one or more transversal guide walls (43) are arranged in the external heating chamber, which guide walls (43) lengthen flow paths of the fumes (12) in the annular fume channel (27) from fume inlet openings (31) to an exhaust fume opening (32). |
