electric The working principle of the vacuum cleaner is that the vacuum cleaner motor rotates at high speed, sucks in air from the suction port, so that the dust box produces a certain vacuum, dust through the ground brush, pipe, handle, hose, main suction pipe into the dust bag in the dust box, dust is left in the dust bag, the filtered air then through a layer of filter into the motor, this filter is to prevent the dust bag from breaking dust into the motor a protective barrier, the air into the motor flow out, due to the continuous wear of the carbon brush in the motor operation, so the flow out of the vacuum cleaner before adding a filter.The working principle of the vacuum cleaner is that the vacuum cleaner motor rotates at high speed, sucks in air from the suction port, so that the dust box produces a certain vacuum, dust through the ground brush, pipe, handle, hose, main suction pipe into the dust bag in the dust box, dust is left in the dust bag, the filtered air then through a layer of filter into the motor, this filter is to prevent the dust bag from breaking dust into the motor a protective barrier, the air into the motor flow out, due to the continuous wear of the carbon brush in the motor operation, so the flow out of the vacuum cleaner before adding a filter.