About this 3D model

Air purifier simplified version, using server 12CM magnetic levitation silent fan, compatible with Xiaomi 2S filter, the overall solution cost is very low. Specifications: Compatible filter: Xiaomi 2S series filter. Reserved interface: fan knob port (diameter 8mm), type-c port, 5521 port. Fan specifications: 12038 fan, 12CM*12CM, 38mm thick. Screw specifications: m3*4 countersunk screws 4pcs, can also be used m3*5 or m3*6. m2.2*4 screws 2pcs (fix the typec interface). Hardware description: Scheme one: typec power supply, if it is a protocol charger, you can use a conversion board with induced 12v, and then connect the 12v fan PWM speed regulator. Scheme two: typec power supply, ordinary USB port charger without protocol, connect 5v to 12v conversion board, and then connect the 12v fan PWM speed regulator by the conversion board. Scheme three: 5521 power supply, 12v power adapter connected to 5521 port, 5521 port connected to 12v fan PWM speed regulator. There are many kinds of ready-made hardware for different schemes, generally the above 3 schemes are enough. I use the typec interface (scheme two), the hardware is as shown in the picture, all of them are very low cost. The fan is a second-hand Jianjun magnetic levitation silent fan 12038, 7.4w power, very quiet when adjusted to 1500 rpm.