welding fume purifier

A certain electronic exchange group for welding smoke purifiers
: 232586710, 345731137
 
The fan uses a 6038 violent fan (four-wire with PWM speed regulation function).
The power supply interface uses a DC interface and a TYPE-C interface (power supply voltage 12V).
Among them, the TYPE-C interface input uses a PD deception chip, and the deception voltage is 12V to power the entire circuit.
A 5V linear regulator provides a 5V voltage source, and the potential of 0~5V is adjusted to the GP9101 through a potentiometer.
This allows GP9101 to output a PWM signal with a duty cycle of 0%~100% to adjust the fan speed.
The shell is 3D printed, please see the attachment for related model files.
 
Some components purchase links (use the mouse to click on the blue text below)
RK097 potentiometer
KF2510 fan terminal block
with light power switch (any self-locking switch with a diameter of 16mm is acceptable)
GP9101 voltage to PWM chip (specific model is GP9101-F20K- L2H1, also available at Lichuang Mall)
 
Update log
Updated on June 17, 2023, the V1.2 version
of the decoy chip was replaced by FS312HC with HUSB238
and a PWM signal phase selection pad was added to solve the problem that some fans are turned down when the potentiometer is turned clockwise. For the problem of air volume
, an external exhaust adapter ring with a diameter of 50mm can be adapted to a smoke exhaust pipe with an inner diameter of 50mm. Harmful gases can be completely discharged to the outside through the exhaust pipe
 
===Warning===
The BOM list is based on the schematic diagram Whichever is inside shall prevail! Please do not use the BOM list directly from the project introduction!
The BOM list is subject to the one in the schematic diagram! Please do not use the BOM list directly from the project introduction!
The BOM list is subject to the one in the schematic diagram! Please do not use the BOM list directly from the project introduction!
 
 
 
 
 
Use activated carbon filter cotton (you need to cut it to the appropriate size yourself)