| 摘要 |
<p>A ventilation arrangement with a partition 104 between a natural ventilation exhaust chamber 102 having the outflowing air pathway 15 to the ambient arranged at right angles to the incoming air pathway 105a from a room in a building, and a mixing chamber for mixing exterior air 110 and interior air 105b, the mixing chamber having at least one ninety or more degrees turn for the air by means of forced flow produced e.g. by a fan, and from which mixed air is delivered to a room. The two vents being fed with air from the room interior may be formed like grilles, fixed or adjustable. The apertures communicating with the ambient are preferably closable, the air flow passing therethrough being adjustable via one or more damper blades (200, fig. 4). The exhaust chamber may be divided in two or more chambers, one of them having a constriction in the form of a step or shelf. A duct (4, fig. 5) may be fitted to the mixing chamber to deliver air to a room via its open distal end (7, fig. 5) and one or more intermediate outlets (6, fig. 5).</p> |
