Descrption:

The fan is an important wind pressure component of the motor ventilation and heat dissipation system. It compensates for the wind pressure loss when the cooling medium passes through the air path, transports a certain flow of cooling medium to the heating part of the motor, takes away the heat and transfers it to the next level of cooling medium.

As the wind pressure component of the motor ventilation and heat dissipation system, the fan, together with the motor's iron core, windings, etc., forms an independent ventilation and heat dissipation system that drives the internal cooling medium air and circulates along the designed preset path. For example: the radial ventilation cooling structure motor core has at least three core segments, and ventilation slots are provided between adjacent core segments to form ventilation trenches. The wind resistance of the ventilation trench gradually increases from both ends of the motor to the middle of the motor. It can improve the balance of the air flow flowing through multiple ventilation trenches, so that the temperature of the coil and multiple core segments is basically balanced along the axial direction of the motor. Compared with a solid structure, the maximum temperature value in the temperature field is significantly reduced without changing the total wind flow, effectively avoiding failures caused by excessive local temperature rise.