shaded pole motor used in household appliances

Why Are Shaded Pole Motor Used In Household Appliances?

Why is the shaded pole motor used in household appliances so popular? As household appliances become increasingly common in daily life, the shaded pole motor in household appliances plays a crucial role. 

Compared to other types of motors, the shaded pole motor has a relatively simple structure and a more compact size. This compact design makes it easier to install and requires less space, making it ideal for household appliances with high space constraints.

What Are Shaded Pole Motors?

Shaded pole motors are a type of AC single-phase induction motor, which is a kind of small and medium-sized squirrel-cage motor, one of which is assisted by a copper ring, which is also called a shaded pole coil or a shaded pole ring. This shading coil acts as the auxiliary winding of the motor. Based on the stator’s shape, shaded pole motors are divided into salient pole types and non-salient pole types.

Key Benefits Of Shaded Pole Motors Used In Household Appliances

Simplicity And Reliability

The salient feature of shaded pole motor is that the structure is very simple, there is no centrifugal switch, the power loss of shaded pole motor is very large, the motor power factor is low, and the starting torque is also very low.

We enclose the rotor and its related reduction gear system in iron, aluminum, copper, or plastic housings. The magnetic field drives the enclosed rotor through the housing. These gear motors typically feature a final output shaft or gear that can rotate from 600 revolutions per minute to 1 revolution per week (1/168 revolutions per hour).

This simple and enclosed design enhances the motor’s reliability. With fewer exposed components, the motor is less susceptible to wear and tear, ensuring long-lasting performance.

shaded pole motor structure

Low Cost

The structure is very simple of shaded pole motors ensures a long lifespan, meeting the demands of extended use in household appliances. This stability and durability provide high cost-effectiveness in the home appliance sector. Consumers benefit from reliable, long-lasting appliances without frequent replacements, making shaded pole motors a budget-friendly choice.

Multiple Shaded Pole Motor Speed Choose

The speed of a shaded pole motor depends on its design. The synchronous speed, which is the speed of the stator’s magnetic field rotation, is determined by the frequency of the input AC power and the number of poles in the stator. More poles mean a slower synchronous speed, while a higher voltage frequency results in a higher synchronous speed.

For a 60Hz motor, common synchronous speeds are 3600, 1800, 1200, and 900 revolutions per minute, depending on the number of poles in the original design.

Low Maintenance Requirements

Shaded pole motors require minimal maintenance due to their simple design and fewer components. The absence of brushes, which are common in other motor types, eliminates the need for regular brush replacement. This low maintenance aspect is particularly beneficial for household appliances, where users prefer devices that operate smoothly without frequent servicing.

Quiet Operation

One of the standout features of shaded pole motors is their quiet operation. The absence of commutators and brushes reduces noise during operation, making these motors ideal for household environments where noise levels need to be kept low. Appliances such as fans, refrigerators, and air conditioners benefit significantly from this quiet performance.

Common Applications Of Shaded Pole Motors In Household Appliances

Household Fans and Ventilation Systems

Small Kitchen Appliances (e.g., blenders, coffee makers)

Refrigerator and Freezer Motors

Air Conditioners and Heaters

shaded pole motor application

Conclusion

Shaded pole motors, with their cost-effectiveness, simplicity, and reliability, have become a staple in household appliances. These motors excel in low-torque applications due to their inherent design characteristics. They are typically used in small, less than 50-watt devices such as fans, air circulators, and other low-torque applications. However, their low starting torque limits their use to smaller equipment.

Lamnow is a leading motor and lamination core manufacturer in China, with an independent automation and professional team, covering automation research and development, design, assembly, commissioning mass production, and other links. Our products include shaded pole motors, BLDC motors, universal motors, PMSM motors, and AC motors that can meet home and abroad customer needs.

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