| 摘要 |
A ventilation unit (1) for balanced ventilation comprising a heat exchanger (5), a supply fan (7), an extract fan (13), duct connections (21, 23) for fresh air (A) and supply air (B), duct connections (25, 29) for extract air (C) and discharge air (CD) and a separate duct connection (27) for extract air (D) from an extraction point (61) arranged with an adjustable opening, for example in the form of a kitchen hood, the ventilation unit (1) being arranged to carry the extract air (D) sucked in by the extract fan (13) through the separate duct connection (27) outside the heat exchanger (5), and the extract fan (13) being arranged to simultaneously suck air (C, D) through both duct connections (25, 27) for extract air and deliver it as discharge air (CD) to the duct connection (29) for air discharge. |
