Remnants of hurricane noel are responsible for high winds and heavy surf along parts of the east coast 飓风“诺埃尔”的余风使东海岸沿岸狂风大做。
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After the ventilator is started , the dust catcher is under negative state and will absorb air with dust in the ductwork to the case on the dust catcher , then the air current will enter into the upper side of filter bag flowing from upper side to lower part ; most of the dust will come out from the filter bag under function of gravity and inertia and then fall into the lower case ( ash hopper ) , then the clean air will enter into the air via ventilator 当通风机启动后，除尘器便处于负压状态，并将余风管中的含尘空气吸入到除尘器上箱体内，然后气流进入滤袋上口自上而下流动，多数粉尘颗粒在重力和惯性力的作用下穿出滤袋下口，沉降至下箱体内(灰斗) ，被滤的净化气体经通风机排入大气中。
