solder fume extractor with activated carbon filter

by:Booguan     2020-09-06
I have endured welding without ventilation for years.
It\'s not healthy, but I\'m used to it and don\'t care enough to change that.
Well, until a few weeks ago I had the opportunity to work in a lab at my university. . .
Once you have experienced the great benefits of the soldering tin furnace, you will no longer want to weld without the soldering tin furnace.
I don\'t want to invest too much money or time, though.
The design is simple but beautiful and can be done in an hour and is a studentBudget friendly.
But the most important thing is that air is not just pushed, but activated-carbon filter.
It has a \"suction range\" of about 20 cm and can even handle the total amount of smoke generated by extra flow.
The component consists of multiple layers, each with its own features: the modules connected to the side are optional and can be easily powered via a USB power supply or a USB battery pack.
All parts come from AliExpress. com.
Although it is a platform for Chinese sellers, the quality is usually good and the price is not cheap. beatable.
Quotes and prices change frequently, so I only include links to the search page.
Occasionally, the product is not as advertised, but every time I get the money back.
Required parts: * the cheapest price when writing this article.
Required Tools: tools required for optional USB ports: Although the fan is not made for standard screws, the size of M5 happens to be very suitable.
This is the right one, so I suggest getting through the hole first.
You don\'t need any extra tools, you can use one of the screws you will use later.
Friction produces heat, which makes the process easier after a few laps.
The fan may break slightly under pressure, which is normal for the cheap chinise version.
Unfortunately, the dust filter is made for smaller screws, just like a fan. A 5.
The 5mm drill bit is the perfect choice for M5 screws.
Holdes don\'t even need to be beautiful, they will be completely covered by the head of the screw.
In my opinion, the micro USB port adds a lot of convenience.
It makes the device suitable for the most common power supply and allows easy portable use of USB battery packs.
You can also connect the 12v power supply and skip this step.
To run a 12v fan from a 5v USB power supply, the voltage needs to be \"started \".
This is a common task with many different integrated circuits and modules available.
I chose MT3608 as it handles the power supply with ease and is perfect for the whole building and very cheap.
Unfortunately, it\'s a little big.
Make a small indent using a circular file to fit the turn
Something for the trimmer
Continue to shorten the wire of the fan.
Make them a little longer than the time it takes to allow corrections later.
After coloring the wires, weld them to the output of the boost module.
Next, weld the micro USB patch board to the input.
If you don\'t have such a boat on hand and are a bit crazy (like me)
You can also weld on the micro usb port
Down to one of the ground (= minus)terminals.
In order to get a high mechanical strength, you have to heat the board and the connector thoroughly and apply some extra flow.
Once the connector starts to \"flow\", you can eliminate the heat.
Carefully weld the wire to the outermost pin, connect the red wire and the black wire-.
Connect the power supply to the input and set the multimeter to V.
Turn the potentiometer until the output voltage is about 12 V.
I tested this component using lab power and noticed that the power consumption of the fan is lower than specified.
In order to increase the airflow, tune the voltage to a 2w operation with a rated power of about 15 v.
Please note that this reduces the life of the fan.
Given the price, this is an acceptable trade-off for me.
If everything goes as smoothly as expected, you can add the module to the fan with a lot of hot glue.
The standard size of the activated carbon filter seems to be 13x13 cm.
Take a cutter with a sharp blade and trim it to 12x12 cm.
The mounting mechanism depends on the exact size and does not cut it smaller.
The filter was initially placed on the inlet side of the fan.
Unfortunately, the filter hit the blade and blocked the fan.
As a quick solution, I am trying to put the filter on the exhaust side to benefit from the plastic holder.
Surprisingly, this did not affect the airflow in any obvious way.
Therefore, install one of the two metal mesh filters to the outside.
If you have already installed the steps-
The Up module determines the direction of the grid.
Use only three screws and screw in about 2mm.
Now you can slide in the activated carbon filter.
Push the corner in to hold the screws.
This will generate the force to hold the filter in place.
Add the last screw.
Tighten all screws without squeezing the filter.
Complete the project by adding the front metal mesh, pay attention to matching its direction with the direction on the back.
Small rubber feet can also be added to reduce vibration and noise. Enjoy fume-free soldering!
Update 2019 January: I have changed the filter several times before, but this time I remember taking a photo of the used filter.
Even if there is no direct comparison, you can clearly see everything that would have appeared in your lungs.
Keep healthy and have 2019! Cheers.
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