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2023-11: Warosu is now out of extended maintenance.

/diy/ - Do It Yourself

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435803 No.435803 [Reply] [Original]

So I bought myself a shiny new box fan and a HVAC filter. I taped them together so the filter can catch the dust in the air.

The fan slowed down a little bit like the filter was making it work harder, do you think that will burn out the motor or anything?

Pic related, I got purple.

>> No.435806

Its certainly not good for it. But your probably fine. Don't forget to get an ionizer for that clean air smell.

>> No.435808

>>435806
I have it on the lowest speed, do you think it would be better on a higher speed? It's probably just a resistor switch limiting the amount of current to the motor so what would be best?

>> No.435811

>>435806
His probably fine what?

>> No.435816

Put the fan in a box, cut out a hole to wedge it, put the filter over a larger opening so it doesn't impressive air flow as much.

>> No.435817

>>435816
Yeah thats a thought, I think I will just buy a smaller filter next time and maybe for now put a little space between them.

>> No.435824

>>435811
It must be a difference in my local vernacular. As that is something people around me say when nothing is likely to go wrong.

>> No.435837

>>435824
His point was that you typed "your" instead of "you're". Grammar sure is difficult.

>> No.435845

>>435824
>>435837
The correct response is "his probably fine GAY WILLY". Sheesh, young people nowadays.

>> No.435850

which side did you tape it to? in other words, is the fan pushing air through the filter or pulling it through? did you try it both ways?

that small impediment shouldnt burn it out IMO

>> No.435977

>>435803
I think the amperage on a standard box fan is very low, you shouldn't have any trouble with it burning itself out. Just to be on the safe side I would buy the thinnest filter you can and keep a close eye on it for a couple days. But in all honesty I don't think you will have a problem.

>> No.436053

>>435837
>>435811
pedantic fucks, not that guy but you understood the sentence right? if so, just move on.

>> No.436054

>>436053
If no-one corrects you, how will you ever learn?

>> No.436124

I saw this on youtube, it's effectiveness was actually good. I think I'm going to do this. Thanks for this thread.

>> No.436129
File: 672 KB, 1132x963, 41541.png [View same] [iqdb] [saucenao] [google]
436129

>>436127
Forgot pic.

>> No.436127

I got reminded of this video when I saw this thread, this youtube comment is kind of conflicting what doctor is saying.

https://www.youtube.com/watch?v=kH5APw_SLUU

>> No.436130

>>436054
Wait... when people use your instead of you're, they actually know the difference but are messing it up on purpose out of laziness right? Are there really people older than 10 who don't know the difference? what the fuck?

>> No.436161

>>436054
Somebody has to stand against the rampant ignorance and stupidity that seems to be taking over the world

>> No.436164

>>436161
I'm >>435806

It was most likely Autocorrect changing it. And I didn't notice either time. I'm usually good at getting the right "you" words. Although I fuck up on the "theres" all the time.

>> No.436169

>>435803

I did the same OP. Fan died a little over a year later but it was a dollar store special anyways.. and it ran 24/7...

It had probably ran for a good 2 years before that also... So I doubt the filter did anything to it.

On a side note. The filter was pretty clean so I doubt it had any effectiveness.

>> No.436225

>>435803
amp draw actually drops as the fan moves less air. Less work = less amp draw. The fan is not actually working harder, it's working less than before.

I didn't believe it until I tried, but get out your amp clamp and try guys, get a reading with the fan running normally and then block the intake entirely (plywood or similar) and check your amp draw again....it's interesting stuff.

>> No.436301

>>436130
It doesn't take effort to spell correctly.

>> No.436732

dont stress, I used to put them on high with 2 filters taped to each one and would paint cars and use them as exhaust, your fine/

>> No.436734

wait, why would the filter blocking airflow make the fan work harder?

>> No.436735

>>436734
It doesn't , see >>436225

>> No.436845

>>436734
>can't into basic physics

>> No.437021

>>436225
>>436735
>>436845

Im pretty sure current draw is at max when a motor is energized and not moving.

Google stall torque or stall current

>> No.437024

Put filter on other side of fan

>> No.437256

>>437021
But the motor does not stop moving, it just stops performing "work"

What you are referring to is LRA or LRC -Locked Rotor Amps or Locked Rotor Current and that is basically the equivalent of inrush current drawn constantly until the motor overheats.

Blocking airflow does not stop the rotor, it just limits the amount of "work" it can perform.Get out your ammeter and test. I did this experiment in a motors class a few years back, very interesting.

>> No.437258

>>436161
>Forgot punctuation at the end of a sentence
>Clearly the sign of an idiot