Energy-saving device of variable frequency controller

The utility model relates to the field of variable-frequency controllers, in particular to an energy-saving device of a variable-frequency controller, which comprises a cabinet body. A frequency conversion circuit board is installed in the cabinet body, and a frequency conversion component is installed on the frequency conversion circuit board. A blowing heat dissipation mechanism is installed in the cabinet body, the blowing heat dissipation mechanism comprises a blowing cover facing the frequency conversion circuit board, and the blowing cover is connected with an air blowing cylinder through an air outlet pipe. According to the utility model, through the arrangement of the air blowing cylinder, the blowing cover, the oscillating rod, the traction column and the eccentric disc, airflow generated by the air blowing cylinder is forcibly blown to the variable-frequency circuit board through the blowing cover, so that the flowing of the airflow on the surface of the variable-frequency circuit board is accelerat