Frequency converter convenient to clean

The invention discloses a frequency converter convenient to clean, and relates to the technical field of frequency converters. The frequency converter comprises a shell, a mounting cavity is formed in the shell, a circuit board is arranged in the mounting cavity, the shell is provided with an air inlet pipe and an air outlet, the air inlet pipe and the air outlet are both communicated with the mounting cavity, the shell is rotationally connected with a rotating shaft, the rotating shaft is provided with a cleaning brush, and the rotating shaft is coaxially provided with an impeller; and the air inlet pipe is used for communicating to an air source, and the air source supplies air to the air inlet pipe, so that the air inlet pipe blows air towards the impeller to drive the impeller to rotate, and the cleaning brush rotates to clean the circuit board. Through the arrangement of the impeller and the cleaning brush, the cleaning of the circuit board is more thorough, and the overall cleaning effect is better. 本申请