| 摘要 |
PURPOSE:To extend the life of the titled heat exchanger by a method wherein a separator permitting fluid to flow freely without changing the fluid channel is provided on the central part of the plate type heat exchanger while the heat transfer plates are fixed holding the separator with their heat transfer surfaces turning back to back with each other. CONSTITUTION:The heat transfer surfaces 15, 16 of the 1-n/2-th heat transfer plates A, B are turned toward the fixed frame side and the fluid channels 17a, 18a are located upward while the heat transfer surfaces of the n/2+1-n-th heat transfer plates A, B are turned toward the movable frame side and the fluid channels 17a, 18a are located downward to be laminated alternately for assembling. The corrosive fluid flows on the heat transfer surface 15 through the fluid channel 17a of the 1-n/2-th heat transfer plate A while said fluid flows on the heat transfer surface 15 through the fluid channel 19a of the separator 14 and the n/2+1-n-th fluid channel 17c as shown by the thin lines. Even if the heat transfer plates are partly corroded, the life of heat exchanger may be extended by means of replacing the heat transfer plates holding the separator 14 while making those plates turn over. |
