| 摘要 |
The present invention provides a heat exchanger which reduces the number of parts constituting the heat exchanger and simplifies a coupling structure by forming a long heat medium flow path to secure a large electric heating area between the heat medium and combustion gas, promoting turbulence generation in the movement of a heat medium and the combustion gas to maximize thermal efficiency, and constituting an outer wall structure sealing a heat medium flow path and a combustion gas flow path and an outer surface thereof to be integrated. To achieve this, according to the present invention, the heat exchanger comprises: a mixture introduction unit (100) into which a mixture wherein air and fuel are mixed is introduced; a burner (200) burning the mixture introduced through the mixture introduction unit (100); heat exchange units (300, 400) provided on a circumference of the burner (200), wherein heat exchange is performed between combustion gas generated by combustion of the burner (200) and a heat medium, and a plurality of unit plates are vertically stacked; and a combustion gas discharge unit (500) wherein the combustion gas passing through the heat exchange units (300, 400) is discharged. Inside the stacked unit plates constituting the heat exchange units (300, 400), a heat medium flow path (P1) and a combustion gas flow path (P2) are separated from each other to be vertically adjacent to each other to be alternately formed, and a combustion gas discharge path (P3) connecting the combustion gas flow path (P2) and the combustion gas discharge unit (500) is formed. |
