| 摘要 |
Heat exchanger for gas heaters, characterized in that it consists of two exchangers, namely a shell-and-tube heat exchanger and double-pipe heat exchanger, which are connected in the manner where the double-pipe heat exchanger is built into the interior of the shell-and-tube exchanger in the form of two central concentric pipes, namely an internal (1) and external one (2); the central pipe (1), to which flue gas from the burner (4) or the combustion chamber is entered, is connected with the tubes (8) of the shell-and-tube exchanger via the space (6) over the upper perforated bottom (7), and the space between the central pipe (1) and the central pipe (2) is connected with the inter-pipe space (11) of the shell-and-tube exchanger, to which, via the intake (12), technological gas for heating is entered.<IMAGE> |
