30mm is a highly suitable size for the DC brushless motor of handheld small fans—it not only meets the core requirements of device miniaturization and low energy consumption, but also balances performance and portability.
In small electronic devices such as mini speakers and small projectors, it can prevent dust from affecting device performance and service life; in some small server cooling modules, it can protect internal electronic components, reduce the probability of equipment failures caused by dust, and ensure stable operation of servers; in the cooling fans of some portable medical equipment, the dust filter can not only maintain the good working condition of the fan, but also prevent dust from contaminating the inside of the equipment, ensuring the accuracy and safety of medical equipment.
