System and method for directing an airflow into a sensor enclosure
摘要
說明書
A first vent 454 and/or a second vent 456 may be disposed on the cover 462. For example, the first vent 454 may be disposed on near the frame 444 or between the upper base plate of the frame 434 and the lower base plate of the frame 434. For example, the second vent 456 may be disposed at or near the top of the cover 462. The first vent 454 allows air from outside to flow into the enclosure 400, and may be used to prevent humidification and/or overheating. The second vent 456 allows warm/hot air to be expelled from the enclosure 400. The first vent 454 and/or the second vent 456 may be conducive to laminar flow of air. For example, a boundary layer created by the air entering and the first vent 454 would be laminar so that the boundary layer does not create turbulent flow. The first vent 454 and/or the second vent 456 may comprise a smooth orifice, and may be shaped to have a circular or elliptical cross section. The first vent 454 and/or the second vent 456 may be shaped so that the Reynolds number of air flowing through the second vent 456 may be at most 2000, to create laminar flow. In some embodiments, the Reynolds number of air flowing through the first vent 454 and/or the second vent 456 may be at most 3000, or at most 1000.
