[Galaxy Book Pro Series Tech Talk] ⑥ Fan

Q&A: Samsung Electronics developers on the strengths of the Galaxy Book Pro series.

Q. What were the challenges when designing the new fan for the Galaxy Book Pro series?
The new Galaxy Book Pro series devices are designed to be 1mm thinner than before.
To compensate for the thinner fan, we studied various shapes of blades and designed them to achieve the required air flow capacity.

Q. What changes have been made to fans in the thinner and lighter Galaxy Book Pro series?
This is the newly developed fan. The most critical factor that defines the fans’ air flow capacity is the shape of the blade attached to the rotor motor. In order to draw maximum performance, we adopted a forward curved blade fan in which the blade angle is curved toward the direction of air rotation. This shape creates a faster exit speed from blade, which increases the volume of discharged air as a result. The number of blades on a fan also translates into its air flow capacity. Our new fan comes with more blades than before. In addition, the thinner the blades are, the higher the air flow capacity. Previously, fans blades were about 0.3-0.4mm thick, but we were able to reduce the blade thickness to 0.2mm this time. In order to do this, we used liquid crystal polymers for the blade, achieving the thinnest that can be achieved with an injection method.

Q. When developing the fan, were there any important considerations you had to think about?
Laptop users physically tend to be very close to the product and can directly feel and hear the fan. When users complain that the fan is too loud, it is due to the noise coming from the air being discharged from the fan. To reduce the noise, the number of fan rotations and rotation speed need to be reduced.

When developing the fan, a computer simulation was used to consider various blade angles, blade thickness and blade sizes and all were comprehensively reviewed. In fact, we reviewed over 30 blade shapes, striving to reach out targeted performance until we found the right one.

Q. Can users change the speed of the fan?
We know that the Galaxy Book Pro series devices will be used in many different environments, with different needs. For example, we provide a silent mode without noise so that it can be used in quiet environments like libraries. We also support a high performance mode for users who want to maximize computing performance.

Q. Anything else you wanted to add?
With over 20 year of experience overseeing the developing of thermal management solution at Samsung Electronics, I have proudly put my heart and soul into designing the fan incorporated into the Galaxy Book Pro series. I am confident that the product will be able to provide a very high level of satisfaction to consumers not only in terms of performance, but also in terms of heating and noise.



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