Low-noise evaporation fan

The utility model discloses a low-noise evaporation fan which comprises a bottom plate, a first shock pad is adhered to the top of the bottom plate through polyurethane adhesive, a noise reduction boxis arranged at the middle end of the top of the first shock pad, a noise reduction layer is adhered to the inner side of the noise reduction box through polyurethane adhesive, and the noise reductionlayer comprises a wave crest sound absorption sponge layer and a phenolic foam layer. Through holes are formed in the left ends and the right ends of the noise reduction box and the noise reduction layer, and fixing blocks are fixedly connected to the left end and the right end of an inner cavity of the noise reduction box. Through the action of the first spring, the movable clamping block, the fixed sleeve, the second spring, the movable supporting block, the second shock pad, the first shock pad and the noise reduction layer, the device has the advantage of good noise reduction effect, andsolves the problems that wh