| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchange ventilation device that is capable of evaporating and melting condensation freeze, while performing a heat exchange ventilation under the condition where the condensation freeze is caused in the interior of a heat exchange element in a cold district, etc. <P>SOLUTION: The device includes an outdoor side air supply switching unit 15, an indoor side air supply switching unit 16, an outdoor side exhaust switching unit 17, and an indoor side exhaust switching unit 18. The device is configured to switch between a first air supply state, which makes first and second openings 11 and 12 communicate with outdoor and indoor, respectively, and a second air supply state which makes the first and second openings 11 and 12 communicate with indoor and outdoor, respectively. This arrangement switches between the first air supply state and the second air supply state, and reverses a flow direction of air supply flowing in the heat exchange element. Thereby, the condensation freeze caused in the heat exchange element can be evaporated and melted. <P>COPYRIGHT: (C)2013,JPO&INPIT |
