| 摘要 |
An air shutter of low cost, high efficiency, and easy maintainability is provided, which can interrupt efficiently the flowage of air across a doorway when the door is open based on the consideration of the experimental data of the flowage of air across the opening area of the doorway of a cold storage. The air shutter comprises a gatepost 12 and a gatepost 13 installed at both sides of the opening area of a doorway. The gatepost 12 is provided with a lower slit nozzle 12 a, a suction opening 12 b, and lower fans 12 c and a suction duct 12 d inside thereof, on the other hand, the gatepost 13 provided with an upper slit nozzle 13 a, a suction opening 13 b, and lower fans 13 c and a suction duct 13 d inside thereof.
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