The FDB (Hydraulic Bearing) technology cultivated during the development of hard disk drive spindle motors is applied to fan motors to achieve greater miniaturization, ultra-thinness, and quietness
Fan motors for ultra-thin PCs have been made smaller, thinner, and quieter
FDB (Hydraulic Bearing) is applied to fan motors and optimized. Solve the problem of air volume/noise through liquid analysis
We optimized the use of FDB (hydraulic bearings), which have a long track record in hard disk drives, to fan motors
Since the server's fan vibration affects the storage and reading of the hard drive, customers are asking for a solution to this problem. On the other hand, as a measure to solve CPU overclocking, high-speed fans for servers have been evolving, and high-volume fan motors with speeds of up to 20,000 rpm have been introduced as a measure to solve the problem of CPU overclocking. Japan Denco's FDB (hydraulic bearing) replaced the ball bearing, which was once its main product, and quickly solved the vibration problem of the spindle motor for hard disk drives. As a result, the idea of making full use of FDB in fan motor bearings was born, and under the guidance of this idea, the FDB of fan motor bearings was promoted.
In recent years, the performance of ultra-thin PCs has been increasing, and the CPUs equipped with them are shifting to high-frequency drives, but the heat generated by the CPU has become a major problem. At the same time, noise has become the focus of attention, and the demand for low-noise fan motors is increasing. FDB (hydraulic bearing) has a proven track record in spindle motors for hard disk drives, so Japan Denco has introduced it to the market as a fan motor and the UFF (UltraFlo FDB) series. However, the competition in the ultra-thin PC bearing market is fierce, and the performance of the fan motor has been improved in order to improve its competitiveness. The structure constructed with hard disk drives, such as magnetic circuits, resinization of metal parts, and shaft diameters, has been comprehensively improved from the perspective of fan motors.
The motor structure has been comprehensively improved to optimize the fan motor. This enables a more competitive motor structure.
Make full use of the computer-aided engineering of supercomputers to solve problems such as air volume, noise, etc
The solution of air volume and noise problems is being carried out in parallel with the optimization of FDB (hydraulic bearing) and magnetic circuit fan motors. Generally speaking, when the fan motor increases the air volume, the noise ratio also increases. Not only offices, but also general households are generally pursuing the muting of notebook PCs.
Therefore, while using computer-aided engineering techniques to ensure the specified air volume, it was also a challenge to explore the design scheme to achieve the size and shape of the fan blades that could achieve low noise. Therefore, a coupled analysis technology was developed that could integrate the analysis of air volume and noise. Analyze the correlation between air flow and noise in the process of "fan-route-cooling object" and make full use of it in the design to find the most suitable blade size. Not only does it reduce the total energy consumption of noise, but it also breaks the peaks of a specific frequency band and mutes it by converting it into a sound that is suitable for human hearing.
An integrated analysis of air volume and noise is performed using coupled analysis techniques to establish a design that ensures the specified air volume and reduces noise.
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