Heat dissipation structure for internal structure of wet and dry dual-purpose dust collector motor

The utility model discloses a heat dissipation structure for an internal structure of a wet and dry dual-purpose dust collector motor. The heat dissipation structure comprises a cover plate, a PCB, a rear end cover, a front end cover and an external air duct. The rear end cover is arranged in the front end cover, the PCB is arranged on the rear end cover, and the cover plate is fixed on the front end cover; the front end cover is embedded into the external air duct, a fan cover is installed at the bottom of the external air duct, and the outer side of the fan cover is sleeved with a shell; a motor is arranged in the front end cover, the motor penetrates through the front end cover and the external air duct to be connected with fan blades, and the fan blades are arranged in the fan cover. According to the utility model, internal heat dissipation is realized in two modes, so that internal air draft holes can be small, the influence on the performance of the motor is small, and the temperature rise in the motor