In the sweltering summer, table fans have become essential cooling tools in many homes and offices due to their compact portability and flexible air delivery. As the core power component of table fans, the performance of the motor directly determines the fan’s operation efficiency and service life. When asked, "Which motor is used in a table fan?" we can provide a detailed explanation from multiple perspectives.
In the realm of table fans, single-phase asynchronous motors are the undisputed mainstream choice. They can be further divided into types such as capacitor-run motors and shaded-pole motors, each with unique performance advantages.
Working Principle: This type of motor connects a capacitor in series with the starting winding. The capacitor creates a phase-shifting effect, generating a phase difference between the currents in the starting winding and the main winding. This produces a rotating magnetic field that drives the motor. The capacitor remains active during operation, not only aiding in starting but also improving the motor’s power factor and efficiency.
Performance Advantages: Capacitor-run motors feature high starting torque, stable operation, high efficiency, and low noise. These characteristics ensure the fan starts quickly and maintains a steady speed, delivering a quiet and comfortable user experience. Their high efficiency also helps reduce energy consumption, aligning with energy-saving and environmental protection trends.
Application Scenarios: Widely used in mid-to-high-end table fan products, especially in environments with strict noise and performance requirements, such as homes and offices.
Working Principle: Shaded-pole motors generate a rotating magnetic field through electromagnetic induction using a short-circuited copper ring (shaded pole ring) on the stator poles. When the stator winding is energized, the main magnetic flux passes through the copper ring, inducing a current that creates a secondary flux. The interaction between the main and secondary fluxes displaces the magnetic field, driving the motor rotation.
Performance Advantages: Simple structure, low cost, and easy maintenance are the 突出 (prominent) advantages of shaded-pole motors. Without complex starting devices, they have a lower failure rate and reduced production costs, making table fans more price-competitive.
Application Scenarios: Commonly used in economical table fans, appealing to price-sensitive consumers. Suitable for places with moderate performance requirements, such as warehouses and temporary living spaces.
With advancing technology, brushless DC motors are gradually gaining traction in the table fan sector, becoming a new choice for users seeking high-quality and intelligent air delivery experiences.
BLDC motors eliminate traditional brush structures and use electronic commutation. Hall sensors detect the rotor’s position, and the control circuit switches the current direction in the stator windings in real time based on sensor signals, generating a continuous rotating magnetic field to drive the rotor.
High Efficiency & Energy Saving: BLDC motors have a much higher energy efficiency ratio than traditional AC motors, saving 30%–50% more electricity than single-phase asynchronous motors of the same power—an attractive feature in the era of green living.
Precise Speed Control: They enable stepless speed regulation over a wide range, allowing users to precisely adjust the fan speed to meet different air delivery needs, from gentle breezes to strong gusts.
Quiet Operation: Without the friction between brushes and commutators, BLDC motors operate with extremely low noise, ensuring undisturbed sleep even when used at night.
Long Service Life: The reduction of mechanically worn components significantly extends the motor’s lifespan, lowering user costs and maintenance frequency.
Suitable for households pursuing high-quality living, offices with strict noise and energy consumption requirements, and smart home system integration. As smart homes become more popular, BLDC motors can integrate with intelligent control systems to enable functions like remote control, timer switches, and automatic speed adjustment based on ambient temperature, providing a more convenient and intelligent user experience.
For both table fan manufacturers and consumers, selecting a motor requires comprehensive evaluation of multiple factors:
Prioritize BLDC motors for users who value silence, high efficiency, and smart functions.
Choose shaded-pole motors or low-cost capacitor-run motors for cost-sensitive needs.
Opt for mid-to-high-end capacitor-run motors for balanced performance and price in general home and office use.
In special environments like humid or dusty areas, the motor’s protection features are crucial. Some motors are specially designed and treated for better moisture and dust resistance, ensuring stable long-term operation.
Manufacturers should select motors based on their product’s market positioning and target audience. High-end markets may prefer high-performance BLDC or premium capacitor-run motors, while mass markets may favor cost-effective capacitor-run or shaded-pole motors.
As a motor manufacturer, we are committed to providing diverse and high-performance motor solutions. Whether it’s the classic and reliable single-phase asynchronous motor or the trendsetting BLDC motor, we can customize high-quality motors that align with your product positioning, helping your table fan stand out in the market and delivering comfortable and convenient air delivery experiences to users. If you have further questions or special requirements about table fan motors, please feel free to contact us—we are here to serve you!
