| 摘要 |
The present invention relates to an air spreading device for fresh outdoor air ducts, designed to introduce fresh air into the rooms in a building. The device is designed to be mounted in front of a fresh air duct, which has an opening close to the interior side of a window, preferably in or on a window board below a window and above the opening of a window apparatus, which opening is directed upwards, which air spreading device has a curved surface with openings, through which air jets are spread in a direction, which is perpendicular to the respective opening, the air spreading device being designed to prevent draughts from occurring also at low fresh air temperatures, energy being saved in this way. The curved surface (Y) of the spreading device (1) is substantially completely provided with very small holes or slits, which are smaller than 5mm, the air with a relatively low temperature, preferably 10-18 DEG C, preferably having a flow speed per meter window of about 5-15 1/s per meter window, the introduced fresh air being spread through the openings (0) in several hundred jets, in diverging directions into the room, subsequent to which an admixture into the warm room air will be done at a very short distance from said convex surface (Y).
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