Micro brushless dc vacuum pumps, brushless dc motor is used as the power, the circular motion of the motor, by mechanical device inside the pump diaphragm do reciprocating motion, thereby within the fixed displacement pump chamber on the air is compressed, stretch forming vacuum (Negative pressure), in the pump suction port atmosphere produces pressure difference with the outside world, under the action of pressure difference, the gas pressure (Suction)Into the pump chamber, and then discharge from the vent. Mini vacuum pump is commonly used dc motor, ac motor can't do a small volume. The life of the brushless dc vacuum pump are much longer than a brush motor. - micro brushless dc pumps--Brushless motor, long life,VML series)Main features: 1. Smoke and exhaust end can bring large load (The resistance)And even blocked belongs to the normal work, not damaged. 2. Working medium without oil, no pollution, free maintenance, 24 hours of continuous operation, allowing medium rich water vapor, any direction installation; 1. Long life: a better raw materials, equipment, process manufacturing pump parts, multiply life; All moving parts are use durable products, with imported high quality brushless motor, improving the pump life. 2. Brushless motor technology: adopting the special import brushless motor, in addition to providing 2 root power line connection (Is cathode), an additional 'PWM feedback control of motor speed, motor, motor start-stop' three signal lines, truly 'full function; May adjust the motor speed by duty ratios, changing the pump output flow, fast and slow, follow one's inclinations,1)。 PWM speed control function: through circuit (PWM pulse width modulation)Adjusting the flow rate of the pump directly without valve adjustment, simplifying the gas circuit system, can satisfy different load, and a variety of applications such as traffic keeps constant; (2)。 The motor feedback function: with motor speed feedback signal (FG)What do we learn line, the pump flow changes. Can easily through the FG signal and work together to achieve closed-loop control PWM function, make your system more intelligent; Is much better than the currently most motor open-loop control (For signal conditioning, motor make the action will be over after, exactly have reached, what cannot be confirmed, let alone again on to the next step according to the feedback control)。 (3)。 Motor start-stop function: can be kept open power line, add 2 -5 v voltage directly stop the pump running; Add 0 -0. 8 v voltage start the pump again; It is very convenient to control,4)。 As many as three kinds of control mode: start, stop, pump power supply 12 v or open circuit; (2) pulse width modulation line add 00. V DC or 2-85 v直流; (3) motor rev. Stop line add 00. V DC or 2-85 v直流; 3. Low interference: I don't like a brush motor, there will be noise pollution in power supply, interfere with the electronic components, and even cause control circuit, LCD screen, crash; It does not have any interference to control circuit. 4. Bring overheating, overload protection, improve the self protection function; Pocket size, less than the micro particles gum tank; (1)Overheating protection: even if long-term continuous 24 hours work at full capacity, can effectively protect the pump damage; (2)Overload protection: effectively avoid foreign bodies fall into the jammed motor and speed regulating voltage drop too low with fixed load and other damage caused by overload;
