Pressurized ventilator( air feed) and smoke extraction fan are interlockingly controlled.
加压送风机（补风）与排烟风机联锁控制。
The gas can be discharged to outdoor completely due to that the air is directly discharged aiming to smoke exhaust ventilator upwardly from the top end, thereby no air and odor are in door.
汽体由顶端直接向上对准吸油烟机排放，可以完全被 排出室外，室内没有汽体和气味。
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