| 摘要 |
The present invention provides a mechanical ventilation and heat recovery unit 1, comprising a housing 10 a plurality of inlets 12, 14, 32, 34 into the housing and outlets 22, 24 out of the housing. A plurality of fluid passages 42, 44 is formed in the housing 10, the housing 10 comprising a volume 50 for receiving a heat exchanger 55, wherein a first fluid passage 42 extends through the heat exchanger volume 50 from a first inlet 12 to a first outlet 22, and a second fluid passage 44 extends through the heat exchanger volume 50 from a second inlet 14 to a second outlet 24. The invention further comprises a third inlet 32 in the first fluid passage 42, on the first outlet 22 side of the heat exchanger volume 50 in the fluid path, and a fourth inlet 34 in the second fluid passage 44 on the second outlet 24 side of the heat exchanger volume in the fluid path, the third and fourth inlets 32, 34 being selectively closable and individually openable. |
