Introduce the cause of the high temperature vacuum pump 2

the following is the cause of the high temperature in the vacuum pump motor analysis: root cause analysis ( The motor power, working current is big, calorific value is big. ( Low fan speed, air pressure, air volume is small. ( Fan blade number is less, the air volume is small. ( Motor with dirt, grease, reduce the heat dissipation capacity. ( Vacuum pump motor bus voltage V, where pressure drop due to the cable and the uneven distribution of load, motor actually only the applied voltage V, the voltage on the low side caused running current. The countermeasures for the motor power, rotational speed and vacuum pump matching, cannot be changed. Fan installed on the motor shaft, motor speed determines the fan speed, and do not change. To increase the number of the fan blade can play a role, but after leaf number increased, dynamic balance is not easy to find, such as looking for is bad, will cause motor vibration increases. ( The original fan cover extended cm, inside with a diameter of axial flow fan with fan cover, axial flow fan motor W power, speed r/min, the voltage V. To retain the original fan. The axial flow fan in power control all the way, do not set chain of axial flow fan and the main motor. Vacuum pump after the start up axial flow fan running in time, min axial flow fan running after vacuum pump shut down, so that the main motor is fully cooling; ( Regularly clean the motor on, keep the motor heat sink clean, increase the heat dissipation ability; ( Adjust the vacuum pump in the busbar voltage V. Effect ( Due to their high axial flow fan speed, air pressure air volume is big, greatly enhance the cooling effect, in the same environment temperature, the electrical load shedding, main motor down ℃ temperature. Main motor temperature to overrun in summer. ( Axial flow fan can be controlled artificially, main motor after shutdown, axial flow fan can still run, fully cooling can make the main motor. ( Balance of period of bus load distribution as far as possible, in case of a certain period of busbar voltage drop caused by overload too much. ( Voltage adjustment, the diaphragm pump running current reduced to A, calorific value is less. ( Reducing the speed of the main motor insulation aging and prolong its service life.