The gas can be discharged to outdoor completely due to that the air is directly discharged aiming to smoke exhaustventilator 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。
2
Therefore, in order to solve the problem of the tractor noise, the exhaust noise, the engine ventilator noise and the noise of vibrating cover of the engine should be reduced first.