The motor sounds like it is far away from our lives. But, do you know how many motors you have in your home? 4~6 air conditioners, 4~5 refrigerators, 3 washing machines, 1 vacuum cleaner, 1 hairdryer, 1 electric fan, 1 electric toothbrush, 4 water purifiers, 2 air purifiers, 3 humidifiers ...a rough total of more than 20. In fact, our lives have long been surrounded by motors. If there is no motor, how can you feel the cool air-conditioning wind in the hot summer, how can you eat a big iced watermelon without a motor, what will life be like without a motor? Have you ever thought about it?
The motor is known as the "heart of home appliances", which affects energy consumption, product performance, noise level, etc., and is very important for every home appliance product. While home appliances are convenient for people's lives and create economic benefits, they also produce amazing energy consumption. Among them, the motor can be regarded as a major energy consumer in the core components of home appliances, which is closely related to the performance of the whole machine, and is closely related to the energy saving level of the whole machine, and even plays a decisive role. At present, the product development direction of motor companies mainly depends on the requirements of the whole machine company, but the overall trend has gradually begun to develop in the direction of high efficiency and environmental protection, light weight and low noise, and digital intelligent control. The application will have a strong impetus for the green and quality development of the entire industry in the future, among which the more efficient and energy-saving brushless motors are also promising.
As the main power source of driving, motor products have a wide range of applications, such as electric vehicles, power tools, etc. According to statistics, the electric energy consumed by the motor accounts for more than 60% of the total power generation in my country. If the efficiency of the motor is improved, it is equivalent to energy saving, which is in line with the trend of carbon neutrality, energy saving and emission reduction.
It can be applied to so many products precisely because brushless motors have more advantages than traditional brushed motors.
1. Thin, light, high power
The rotor of the brushless motor uses permanent magnet steel, thus realizing thin profile, light weight and high power. It can meet the miniaturization requirements of the device.
2. More energy efficient
The rotor part of the brushless motor uses permanent magnet steel, which reduces the secondary loss of the rotor and greatly reduces power consumption. Contributes to the energy saving of the device.
3. Stable
The brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. Because the brushless DC motor runs in a self-control mode, it will not add a starting winding to the rotor like a synchronous motor with heavy load starting under variable frequency speed regulation, nor will it cause oscillation and loss of step when the load changes suddenly.
4.Service life
The brushless motor can work continuously for about 20,000 hours, and the conventional service life is 7-10 years. Carbon brush motor: It can work continuously for about 5000 hours, and the normal service life is 2-3 years.
5. After-sales maintenance
The carbon brush motor needs to be replaced. If the replacement is not timely, the motor will be damaged. The brushless motor has a long service life, usually more than 10 times that of the brushed motor, but the motor needs to be replaced if it is broken, but the daily maintenance is basically unnecessary.
6. Use effect
Brushless motor: usually digital frequency conversion control, strong controllability, from a few revolutions per minute to tens of thousands of revolutions per minute can be easily realized.
Carbon brush motor: The old carbon brush motor generally works at a constant speed after starting, and it is not easy to adjust the speed. The series motor can also reach 20,000 rpm, but the service life will be relatively short.
