CN CN210769415U
The utility model belongs to the technical field of fans. The utility model relates to a fan. The device comprises a base, supporting legs which are evenly distributed are arranged at the bottom of the base, a weighting block is arranged on one side of each supporting leg, the weighting blocks are fixedly connected with the base, a switch button is arranged on the surface of the base, a speed adjusting knob is arranged on one side of the switch button, and air inlet holes which are evenly distributed are formed in the two sides of the speed adjusting knob. An annular partition plate is arranged in a base; noise generated when the bladeless fan works can be reduced through the sound absorption cotton arranged on the surface of the annular partition plate. By means of the sawtooth-shaped grooves formed in the surface of the sound absorption cotton, the absorption effect on noise generated by operation of the induced draft fan can be improved, and the purpose of noise reduction can be achieved by repeatedly refracting the noise through the sawtooth-shaped grooves formed in the surface of the sound absorption cotton.
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