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[Did You Know About Cooling?] Introduction to DC Brushless Cooling Fans

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News Center

Industry Trends

Release time:

2019-07-17

DC brushless Cooling fan The structure can be mainly divided into four major components: the rotor, the stator, the outer frame, and the motor (electric motor), as well as several other minor parts.
First, the fan rotor section:
Including the fan blades—the core component responsible for generating airflow—and the shaft of the cooling fan, which supports and balances the rotation of the blades, the rotor magnetic ring, the permanent magnets (crucial for switching the magnetic pole speeds), the outer frame of the magnetic ring, and the mechanism for securing the magnetic ring.
Second, the stator part of the fan:
Including supporting springs, separate bearing balance shafts and bearings to provide high rotational speed, low friction, and long service life; retaining rings that secure the entire component and motor assembly, determine the direction of rotation, and play a crucial role in controlling the magnitude and speed of rotation.
Third, the outer frame of the cooling fan:
It provides support for the fan motor and serves as a guide;
Fourth, the fan motor section
Includes the circuit board, which controls energy consumption and signal input/output; silicon steel laminations (also known as stator magnets, with winding coils attached on top), used to generate magnetic poles for propulsion switching; and upper and lower covers for the silicon steel laminations, providing fixation and insulation.
Classification of DC Brushless Cooling Fans:
Depending on the type of bearing, there are four main categories: 1. Brushless fans with single-ball bearings; 2. Brushless fans with Rulon bearings; 3. Brushless fans with hydraulic bearings; and 4. Brushless fans with nano-bearings. The standard dimensions of DC brushless fans typically include 6 cm, 7 cm, 8 cm, and 9 cm. A small number of coolers have begun using extra-large 12-cm diameter fans. Fan sizes and specifications are usually indicated by four-digit numbers.
The above provides an overview of the structure and classification of DC brushless cooling fans. Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a large-scale enterprise integrating customization, R&D, manufacturing, sales, and service in the fields of DC brushless motors, DC cooling fans, DC brushless fans, DC stand-mounted fans, boosted cooling fans, miniature cooling fans, DC cooling fans, DC blowers, and non-standard fan solutions. We are a wholesale manufacturer and supplier of DC fans, and our after-sales service is fully guaranteed. We welcome you to contact us for more information and look forward to enjoying a pleasant collaboration with you.

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