Several inventors in the 19th century tried a machine that sucked up dirt .Most machines use a folding bellows that can be operated by hand .Several machines were built, including the successful "little Daisy" model .But they didn't save labor, because it took two people to operate them, one bellows, one alignment port. Since the mid-to-late 1990s, sales of vacuum cleaners in China have risen by 38% a year .Nowadays cleaner not only function more and more, appearance is beautified with each passing day, its price is cheaper and cheaper also, got the love of a lot of citizen .The high speed vacuum cleaner motor is one of them.
Here's how to filter:
1.Dust bag filter: dust bag filter through the dust bag and HEPA filter material, often replace the dust bag: filter out 99.99% of the size of particles as low as 0.3 micron, each use to replace the dust bag, use the dust bag as the filter characteristics, easy to clean, do not need to clean every day.The disadvantage is that after a long time, the filtration capacity of the dust bag is reduced, the pores of the cloth will open, and the filtration capacity is seriously reduced, which needs to be replaced.
2.water filtration: water filtration use water as a filtering medium to make dust and microorganisms in the passage of most will be dissolved and locked in the water, the remaining through the filter after further filtration, so that the exhaust of the vacuum cleaner may be more clean than the air inhaled .Advantage is wet and dry dual-use; The drawback is to clean up after vacuuming.
