| 摘要 |
An animal building ventilator. A plastic housing mountable through an aperture in an animal building includes a pair of air inlet passages between which is located an air outlet passage. An electric fan exhausts the air within the building through the air outlet passage causing external air to flow inwardly through the inlet passages. A plurality of doors are operable to adjust the volume of flow through the passages. The fan is removably mountable to the housing allowing the passages to be cleaned with water with minimal disassembly. Drains within the passages facilitate the outward flow of the cleaning water. A linkage gear mechanism coordinates the motion of the doors.
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