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What are the advantages and disadvantages of permanent magnet industrial ceiling fans?
Release Time:
2022-07-22
Industrial large fans originated in the United States and have rapidly developed in China in recent years. Permanent magnet motors are gradually replacing three-phase asynchronous motors. Due to their superior performance, permanent magnet motors are regarded by the industry as promising energy-saving motors. So, what are the advantages and disadvantages of permanent magnet industrial large fans?
Industrial fans originated in the United States and have developed rapidly in China in recent years. Permanent magnet motors are gradually replacing three-phase asynchronous motors. Permanent magnet motors have superior performance and are regarded by the industry as promising energy-saving motors, so What are the advantages and disadvantages of permanent magnet industrial fans? ?
Industrial fan motors are divided into external rotor and internal rotor motors. What are the differences between them? Due to structural reasons, external rotor motors require reserved cooling holes, making it easy for dust and moisture to enter, causing short circuits and motor burnout. External rotor motors only have three power lines and no temperature sensor, so they cannot achieve over-temperature protection, which affects motor lifespan. Internal rotor motors have good sealing performance and protection level reaching ip64 grade, preventing moisture and dust from entering, no need to reserve cooling holes. The internal rotor motor casing has heat sinks with good heat dissipation performance. Internal rotor permanent magnet motors are equipped with temperature sensors to detect motor temperature and achieve automatic over-temperature protection.
What are the advantages and disadvantages of permanent magnet industrial fans? ? ? Comparison of installation between internal and external rotor motors: Due to structural design, the suspension rod of the external rotor motor must bear the entire weight of the fan, including the motor weight, blade weight, and the lateral torque generated by the blades during operation. The bearings of external rotor motors bear more weight than those of internal rotor motors, leading to faster bearing wear, higher lubrication requirements, and shorter lifespan. Internal rotor motors have excellent structural design; the suspension rod and motor can be installed as a whole firmly, and the bearings only bear the blade weight. The load on the bearings is greatly reduced compared to external rotor motors, resulting in less wear and longer service life. Therefore, internal rotor motor industrial fans on the market have longer warranty periods than external rotor ones.
What are the advantages and disadvantages of permanent magnet industrial fans? ?- Guangzhou Qixiang Permanent Magnet Direct-Drive Internal Rotor Motor Fan 100W+ A common choice among customers, ten years maintenance-free with zero after-sales issues.
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