The DC brushless motor is powered by the DC brushless motor. The circular motion of the motor causes the diaphragm in the pump to reciprocate through the mechanical device, so that the air with a fixed volume in the pump cavity is compressed and stretched to form a vacuum (negative pressure). A differential pressure is created between the pump suction and the outside atmospheric pressure. Under the action of the pressure difference, the brushless DC motor presses (sucks) the gas into the pump cavity, and then discharges it from the exhaust port.

　　Advantages of brushless DC motors

　　1. Long service life

　　The brushless DC motor uses better raw materials, equipment and technology to manufacture pump parts, which can double the service life; all moving parts are made of durable products, and cooperate with high-quality brushless motors to improve the service life of the pump in an all-round way.

　　2. Brushless motor technology

　　(1) PWM speed regulation function: The flow of the pump can be directly adjusted by the circuit (PWM pulse width modulation), without valve adjustment, simplifying the gas circuit system and meeting various application speeds such as different loads and constant current.

　　(2) Motor feedback function of brushless DC motor: There is a motor speed feedback signal (FG) line, which can know the flow change of the pump. Pass

　　(3) Motor start and stop function: control different voltages (0~5V) to control start and stop.

　　(4) The brushless DC motor has other rich speed regulation functions: (built-in point controller, external potentiometer, analog signal, pulse frequency, etc.).

　　(5) Small interference: Unlike brushed motors, noise will pollute the power supply, interfere with electronic components, and even cause the control circuit and LCD screen to crash; it will not interfere with the control circuit.

　　(6) The brushless DC motor has the self-protection function of over-temperature, under-voltage and overload protection.