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Twin Portable Fan
Industrial Design

NEXT Generations of Portable Fan
New Definition of Portable Fan
Commercial portable fans have large wings, making them difficult to carry in a bag or in pockets. The twin fan employs two micro fans with half the thickness of the former products. Thus, users can easily carry it inside bags or pockets, and the wind's power stays the same as that of the former fans

The inside of the stroller is even stuffier in hot weather. The Twin Fan can be installed in the stroller using a Smartphone cradle.
In hot weather, the bag becomes lighter. For those who prefer lighter bags to heavy ones, portable fans can become a burden. 
It takes a long time to cool down the car in the summer. The Twin Fan can be installed on the air vent using a phone cradle, quickly sending a cool breeze into the backseat.
Ergonomic Design
With a width of 58mm and a thickness of 21mm, it fits comfortably in one hand. The button is located just where the thumb can comfortably rest, and the rounded bottom offers a stable grip.
Smooth and Strong Design
The design of the Twin Fan presents a strong, yet soft impression via the combination of the roundness and the edge. The handle and the overall look emphasize the roundness, giving softness, while the grill pattern highlights the edge, providing a strong look.
The cradle emphasizes the Twin Fan's unique round design through its transparent material, and the applied wave patterns at the top surface provide a fun, classy look.

Development process
Scrupulous Aerodynamic Design
Through numerous simulation tests employing world's best ANSYS aerodynamic program, as well as wing mock-up tests, the Twin Fan's optimized wings were created. The small wings have maximized wind efficiency and minimized energy consumption.
The circulator wing design and the strong winds of 10W pass through the oblique circulator grill, creating winds with strong directionality.
Lengthening the depth of the side grill increases the wind power and creates winds with strong directionality. The curvy design provides a robust and strong look
Maximum Wind Speed of 20.3km/h
The oblique whirlwind grill pattern and circulator wind collecting method create strong and full winds. You can feel the strong winds at a close distance, and softer winds at far distance.
Using the ANSYS Discovery Program, the Twin Fan's optimal values are simulated by aerodynamic calculation. 
We found the Twin Fan's optimal values through numerous wing sample tests, handle grip tests, and wing pattern tests. 
We came up with the design after confirming the interior specs found via test results. After numerous revisions in the design, today's Twin Fan was born
Three mock-up tests are done for assembly, and the mold was made after reliability verification. The mold was created at a primary molding factory with high professionalism and reliability.
Through a total of 6 interior/exterior mold revisions and test injections, we gained reliability and heightened quality. The circuit was increased in its efficiency in heating, battery stability, and energy efficiency through 4 sample tests. 
One-fan / Two-fan Mode Change
When pressing the button for 3 seconds, the bottom fan will operate. In a one-fan mode, the usage time doubles compared to that of two-fan mode.
When canceling one-fan mode, you can press the button for 3 seconds. Two-fan mode allows for fuller winds.
Non-Jamming Design
At the initial stage of design, the gap of the grill pattern was designed as narrow as possible for safety.

The pattern with a rear gap of 5.6mm / front gap of 7mm minimized defects and accidents from getting a finger or other substances stuck.
The Twin Fan That Fits in the Bag
The slim design allows the product to easily fit inside a bag or a pocket. It is the perfect size to fit right inside women's clutch bags, as well as inside men's inside pockets.
Dual Overvoltage Blockage / Uses High Efficiency Energy / Micro BLDC Motor​​​​​​​
Overcharge and overcurrent are blocked through the mainboard and the battery safe circuit to enhance stability, and the battery capacity is 2600mAh.
Voltage sent to the motor is boosted up to 95% energy efficiency, increasing the usage time and stably providing the voltage to make the motor rotation rate constant.
The Twin Fan's micro premium brush-less DC motor utilizes a strong rotation velocity of 3000rpm. BLDC's strength and high durability allows less heating and abrasion over long-term use.
Twin Portable Fan

Twin Portable Fan

NEXT Generations of Portable Fan It is a project that research and development production from 250 designs for 2 years. New Definition of Porta Read More