| 摘要 |
The present invention relates to a heat exchanger for preventing corrosion and leakage, which has improved performance for heat exchange parts where corrosion and leakage occur frequently. In the heat exchanger, multiple heat exchanging plates are stacked between an upper cover and a lower cover, a gasket is included the heat exchanging plates in order to prevent leakage, and a pair of first holes and a pair of second holes are formed on the upper cover in order to form separate flow paths that pass a groove unit on the heat exchanging plate. The heat exchanger comprises: an upper cover (10) where a stepped groove (12) is formed in a second hole (11-2) that forms a flow path on a plate body (11) for allowing wastewater at cold temperatures or high temperatures to pass; a nozzle port (30) where a second inflow port (30-2) and a second discharge port (30-1) are formed of a polytetrafluoroethylene (PTFE) material, and a disk unit (32) is formed on the bottom of a pipe body (31) in order to be fixated to the stepped groove (12) in the second hole (11-2); and heat exchanging plates (50) where a ceramic coating unit (52) is formed on the external surface of an SUS plate (51). |
