Frequency converter heat radiation structure

The utility model discloses a frequency converter heat radiation structure. The frequency converter heat radiation structure comprises a casing, wherein the top portion of the casing is provided with an axial-flow fan, the casing is internally provided with a heat radiator under the axial-flow fan, the bottom board of the casing is provided with a first air inlet just opposite to the heat radiator, the heat radiator comprises a mounting board and heat radiation boards parallelly arranged on the mounting board, air channels are formed among the heat radiation boards, and the air channels are in parallel with the axial-flow fan axially. According to the frequency converter heat radiation structure, the mounting board of the heat radiator is further a circuit module of a capacitor and a mounting base board for rectification bridges, so heat generated by power devices can be transferred by the heat radiator, the air channels and the axial-flow fan are opposite to the first air inlet, so cooling air passing through the heat radiator is enabled to have a strong flow, heat generated by the power devices in a frequency converter can be rapidly transferred and scattered through the common effect of the fan and the radiator of the frequency converter heat radiation structure, and the heat radiation effect is good.