Dustproof rainproof frequency converter

The utility model discloses a dustproof rainproof frequency converter. The dustproof rainproof frequency converter comprises a casing, wherein the lower portion of the casing is provided with a square tube type skirtboard, one side face of the skirtboard is provided with a jack, the jack is inserted with a dustproof net board, the skirtboard is internally provided with an upper baffle board and a lower baffle board below the dustproof net board, and the upper baffle board and the lower baffle board are provided with upper choke boards and lower choke boards which are arranged in a staggered mode. According to the dustproof rainproof frequency converter, the upper choke boards and lower choke boards are arranged, so an air flow is enabled to form U-shaped tortuous flow among the upper choke boards and the lower choke boards, moisture contained in the air flow can be intercepted by the choke boards when the choke boards contact with the air flow, moisture separation is realized, moreover, the dustproof net board is arranged in the square tube type skirtboard at the lower portion of the frequency converter casing to prevent dusts from entering the frequency converter casing, components can be prevented from being damaged by moisture and dusts, the fault rate of the frequency converter is low, and service life is long.