2020年5月19日星期二

A micro DC vacuum pump with a brush less motor

BLDCM is a typical mechatronics product, which is composed of motor body and driver. Because the BLDCM operates in automatic control mode, it does not have oscillation and out of step when the load suddenly changes, unlike the synchronous motor which starts with heavy load under frequency control.

The small and medium capacity BLDCM is a permanent magnet, and the BLDCM uses semiconductor switching devices to realize electronic commutation, that is, to replace the traditional contact commutator and brush with electronic switching devices. It has the advantages of high reliability, no commutation spark and low mechanical noise

The micro DC adopts the brush free vacuum pump. In addition to 2 power lines (positive and negative poles), 3 signal lines of "PWM speed regulation, motor feedback, motor start and stop" are provided. The motor speed can be adjusted and the output flow of the pump can be changed by duty cycle, which is fast or slow and arbitrary. PWM speed regulating function: it means that the pump flow can be directly adjusted through the circuit (PWM pulse width modulation), without valve adjustment at all, simplifying the air circuit system, meeting different loads, and the flow is always kept constant and other applications

Oil Diffusion Vacuum Pump

Dry Type Oilless Vacuum Pumps

industrial vacuum pumps,vacuum furnaces

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