At present, there are two main types of centrifuge motors on the market, namely brushed motors and brushless motors. These two motors have their own characteristics. Let me introduce you to the following. I hope to help you with your purchase.
1. Advantages and disadvantages of brushless motor centrifuge
Advantages: The advantage of the brushless motor centrifuge is that the no-load resistance of the centrifuge mainly comes from the rotating contact point between the rotor and the stator. Therefore, the device uses ball bearings at both ends of the rotor to reduce the friction to reduce heat generation. Efficiency and speed, and the user can control the speed of the control, and the controllability is strong.
Disadvantages: The cost of the speed control system of the brushless motor centrifuge is higher than that of the brushed high speed motor, and the controller of the centrifuge is prone to failure during use. The DC brushless motor is now seen more.
2. Advantages and disadvantages of brush motor centrifuge
Advantages: The brush machine uses the brush motor as its own motor form. The carbon brush is used at the internal structure electrode of the motor. The two brushes (copper brush or carbon brush) inside the motor are fixed on the motor back cover through the insulation seat. Directly introducing the positive and negative poles of the power supply to the commutator of the rotor, and the commutator is connected to the coil on the rotor. The alternating polarity of the three coils alternates with the two magnets fixed on the outer casing to rotate. . This type of centrifuge has the advantages of simple manufacturing and low production cost.
Disadvantages: The speed of the brush motor centrifuge is constant during operation, so it is not easy for the user to adjust the speed, and because the phase changer is fixed with the inner rotor, the brush and the outer casing (stator) When fixed together, the brush and the phase changer continuously generate friction when the motor rotates to generate a large amount of resistance and heat, so the efficiency of the brush motor is very low.
Both of the above motors are common motors for different applications. The brushed motor of the centrifuge has a low manufacturing cost, so the market price is also relatively affordable, and the working speed is constant after starting. It is suitable for general laboratory and scientific research units. At present, brush motors have always dominated, but with the increasing technical requirements, the application of brush motors in centrifuges is slowly decreasing. The brushless motor has strong controllability, low power loss, low noise, no dust and environmental protection. Although it is high in price, it has been favored by large laboratories and scientific research units, especially for environmental protection, long service life and energy saving. The characteristics make it more and more widely used in centrifuges.
This article was edited by the laboratory instrument - Hunan Gilson Technology Development Co., Ltd.
Personal Care,Hair Conditioner,Body Wash Shower Gel,Moisturizing Shower Gel
Wuxi Keni Daily Cosmetics Co.,Ltd , https://www.wxkenidaily.com