Generally speaking, vacuum pump is a device to improve, generate and maintain vacuum in a certain closed space by various methods. Next, for you to introduce the reasons for the high temperature of the vacuum pump, and the method of cooling the vacuum pump.

1、 Causes of high temperature of vacuum pump

1. The fan blade is few, produces the wind quantity to be small, therefore the heat dissipation cannot keep up with;

2. If the motor power is too high, the working current will become larger, so the thermal power is also large;

3. The fan speed is low, so the air pressure is low and the air volume is small;

4. The motor is attached with dust, oil and other dirt, which reduces the heat dissipation function;

5. The bus voltage of the vacuum pump motor is 380V. Due to the cable voltage drop and uneven distribution, the voltage of the motor is lower than 380V. In order to ensure the power unchanged, the current increases and the thermal power increases.

2、 Cooling method of vacuum pump

Motor power, speed is matched with the vacuum pump, so it can not be changed. The fan is installed on the main shaft of the motor. The speed of the motor determines the speed of the fan, so it can not be changed. Increasing the number of fan blades can play a certain role, but with the increase of blades, the original dynamic balance is broken, and it is necessary to find a new dynamic balance point, which is not easy to find. If the dynamic balance is not correct, it will cause severe vibration of the motor. Therefore, the following methods are generally adopted:

1. Increase the bus voltage of vacuum pump to 400V;

2. The original fan cover is lengthened by 40cm, and an axial fan with the diameter of fan is installed inside. The motor power of axial fan is 850W, the speed is 14889r / min, and the voltage is 380V. The original fan remains. The axial flow fan is set in another power supply control. After the vacuum pump is started, the axial flow fan runs. After the vacuum pump is stopped, the axial flow fan is stopped 30 minutes to make the main motor fully cooled;

3. Keep the motor clean and clean, regularly clean the dirt on the motor, and increase the heat dissipation capacity.