| 摘要 |
PURPOSE: A heat recovery type ventilation system with an external bypass function is provided to reduce a volume of the system, to dramatically enhance serviceability, and to remarkably reduce production costs. CONSTITUTION: A heat recovery type ventilation system with an external bypass function comprises a body(1), a heat exchanger, a control unit, an air supply fan, and an exhaust fan. Bypass duct connection ports are installed respectively in an exhaust outlet and an exhaust inlet formed to be crossed in both sides of the body. The bypass duct connection port is installed to be exposed to outside through a top surface of the body. A bypass duct of a predetermined shape is detachably installed in between the two bypass duct connection ports in the outside of the body. An exhaust flow pass changing member(50) changing a flowing direction of air, which is discharged from indoors to the outside, to the heat exchanger or the bypass duct by corresponding to output signals of a control unit is formed between the exhaust inlet and the bypass duct connection port. |
