Heat dissipation device for frequency converter

The invention provides a heat dissipation device for a frequency converter, which comprises a frequency converter box body, an element frame which is arranged in the box body and is used for placing each element, and a cold air cooling system and a cold water cooling system which are arranged in the box body. According to the device, the air refrigeration equipment is added, air blown to the element frame by the fan is low-temperature air, the surrounding environment of each element is more effectively cooled and radiated, besides cold air cooling and radiating, the device is further provided with the cold water cooling and radiating system, and the cooling liquid pipeline network is arranged in the bottom plate for placing each element, so that the cooling effect is improved. And the cooling liquid circularly flows between each bottom plate and the cooling liquid box, so that the cooling liquid cools each element on the bottom plate when flowing through the bottom plate, and takes away heat along with the fl