The difference between the two, brushless motor, coil and the commutator rotating, the magnetic steel and carbon brush don't turn, is the direction of the coil current changes with the motor rotation phase switcher and brush. , brushless dc motor is composed of main body of the motor and drive, is a typical mechatronics product. Because of brushless dc motor based on automatic running, so will not like the synchronous motor frequency control of motor speed under overload start plus startup winding on the rotor, also won't generate oscillation and step out when load mutation. , has a brush motor is a traditional product, performance is stable. Brushless motor is to upgrade the product, its performance is better than a brush motor service life. But the control circuit is more complex, the aging of the components of screening more strict. , brushless motor equipment can be used in: the dairy industry, brewing industry, soy products, meat products processing industry and processing industry, beverage processing industry, pastry processing industry, pharmaceutical industry, some higher requirements, such as precision electronic factory, dust-free workshop, etc. , as dior electric brushless motor (DIHOUR)Hand dryer, apply more at the factory. And carbon brush motor can only be applicable to all kinds of bathroom area of requirements is not high, as dust-free workshop and explosion-proof workshop will not be able to use! , service life, brushless motors can continuous working hours, the service life of the conventional -Years. Carbon brush motor: can work continuously hours or so, the service life of the conventional -Years. , energy saving, relative to character, brushless motor/power consumption is only carbon brush. One, with a brush brushless motor performance comparison, friction is big, big loss when some friends with a brush motor often encounter this problem, that is to use the motor after a period of time, need to open the motor to clean up the carbon brush, time-consuming, laborious maintenance strength as a household cleaning. Large, fever, short life due to have a brush motor structure, brush and commutator of the contact resistance is very big, overall resistance caused by motor is bigger, easy to heat, and permanent magnet is a thermal sensor, if temperature is too high, will be demagnetization magnetic steel, the motor performance degradation, affect the service life of a brush motor. , low efficiency, small output power above said to have a brush motor heating problems, largely because the current work on the internal resistance of the motor, so electricity have much transformed to heat energy, so there are motor output power is not big, the efficiency is not high also. Second, the advantages of the brushless motor, brushless, low interference in addition to the brushless motor brush, the most immediate change is without the motor running when the electric spark, thus greatly reduce the electric spark interference of remote radio equipment. Smooth operation, low noise, brushless motor without brush, less friction force during operation, smooth operation, low noise will be many, the advantages of model operation stability is a huge support. , long life, low maintenance costs less brush, brushless motor wear is mainly on the bearing, from the mechanical point of view, brushless motor is almost a maintenance-free motor, when necessary, the only need to do some cleaning maintenance. Next, knew brushless motor relative to have advantage in where the brush motor, but everything is not absolute, a brush motor torque at low speed performance, large torque and other performance characteristics is irreplaceable brushless motor, but in the context of use and ease of brushless motor, with the decline in the cost of brushless controller and brushless technology development and market competition both at home and abroad, it also greatly promoted the development of the domestic brushless motor. Third, the theory from the trend, brushless motor slowdown could replace gear motor brush, scope of application: brushless motor, is often used in the control request is higher, higher speed of devices, such as model aircraft, precision instrument to control the motor speed strictly, spins at very high equipment, and now the most advanced hand dryer, the cost of the motor and controller is very high, so also more high-end equipment to be used. Carbon brush motor: usually brush motor power equipment are used, such as hair dryer, electric motor factory, household smoke lampblack machine, etc. Series motor speed also can achieve very high, but due to the wear of carbon brush, brushless motor is better than life. , the service life of the brushless motor, usually life in tens of thousands of hours in the order of magnitude, but due to the different bearing brushless motor service life are quite different. Carbon brush motor: usually have brush motor continuous working life in more than a few hundred to thousand hours, to use the limit will need to replace carbon brush, otherwise easy to cause bearing wear. , using effect, brushless motor, are usually digital frequency conversion control, controllability is strong, from a few rotations per minute (RPM), to the tens of thousands of revolutions per minute can be very easy to implement. Carbon brush motor, brushless motor general after starting work speed constant, speed is not very easy, also can achieve a series motor/SEC, but life is short. , energy conservation and environmental protection aspects, in contrast, brushless motor than series motor is controlled by frequency conversion technology energy saving a lot of, the most typical is the frequency conversion air conditioning and refrigerator. And maintenance in the future need to replace carbon brush carbon brush motor, if the change is less than when causes the damage of motor, brushless motors, long service life, usually have a motor of The Times, but need to replace the motor is broken, but basic don't need daily maintenance. And noise noises have nothing to do with whether a brush motor, main is to look at the bearing and click on the matching of the internal components.
