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The present invention provides an air purifier of the present invention provides a switching device comprising a wheel cover and the rotor bottom, the bottom cover comprises a C-shaped wheel frame and the annular plate, the C-shaped frame disposed on said annular plates on the outer ring of the wheel cover and the wheel has a cavernous circumferential bottom, one side of the cavernous gap has opened a second C-shaped frame with the first notch of the same size, in the the bottom of said annular plate provided with at least three hinges, the hinge is hinged to the front end of the bottom of the annular plate, such that when the back and forth rotation of the annular plate, the hinge can be opened or closed rear end of said ring the intermediate plate through hole.
 
 
The present invention also provides an air purifier. Embodiments of the present invention to provide a switching device air purifier and air purifier, designed, through the layers of filtration, purification effect is good, because the handle can be realized only toggle indoor air purification cycle through easy to use.
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The utility model provides a good air purifier purifying effect, including the front cover and the cover features the front cover and the lid cavity formed with initial combination of filters and filter, the preliminary filter mesh screen is placed in front of said composition, on both sides of the cavity of the front cover and the lid are formed in the inlet side, further comprising a cover, said cover and said cavity formed in the cover equipped with an impeller and curved duct, said impeller disposed within the curved duct, the back cover also features the outlet, the curved duct communicating with said outlet, said out provided backstop
 
 
downwind, in the outer wall of the curved duct with two ion generator. Using the purifying effect of the utility model provides a good air purifier, using curved duct and inlet baffle, so that the air smoothly through the spiral duct from the exhaust outlet, steady stream; using two ion generator for air better quality improvement.

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