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Fume evacuation duct with blower and retractable shutters, has shutters in pairs pivoted to inner surface of duct base and connected by hinges
Fume evacuation duct with blower and retractable shutters, has shutters in pairs pivoted to inner surface of duct base and connected by hinges
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机译:排烟管道,带有鼓风机和可伸缩百叶窗,成对的百叶窗可枢转至管道底座的内表面并通过铰链连接
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摘要
The duct, designed to be installed e.g. in a tunnel or underground car park, or transported by an emergency vehicle, contains a blower system (2) and apertures in its base controlled by pairs of shutters (3). Each pair comprises front (5) and rear (7) shutters connected by a hinge and opened by a shuttle and slideway drive mechanism (13, 14, 17) connected to the front shutter and operated by a cable (20) and pulley (21) system. The rear shutter moves on rollers running in slideways along the sides of the aperture.
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