tiny 12v fan for my miniature models to exhaust humidifier vapor/misthi

[Crafts4Me]

my models are all 12v and on a 1:12 scale
i have a retile humidifier from the back to add "steam": from my boiling pots
i need some type of mini fan to ehaust the "steam" through the "chimney"
any suggestions
it needs to be really small and 12v

 

[Harald Kapp]

What is "really small"?
PC fans operate on 12 V, but most likely are still way to big for you, are they?

Here's a really small fan, operating on 3 V (works probably on 3.3 V, too, whcih I take it you have somewhere in your miniature)
A tad bigger are these. Works on 5 V. I'm sure you have 5 V from your USB power available.
This one is 12 V.
I don't think you'll find smaller ones - at least not at a reasonable price.

Why do you need a "really small" fan? Couldn't you use any fan, a flexible tube and an adapter (possibly 3D printed) to direct the airstream to where it is needed? This way you can mount the fan in a convenient location somewhere else, somewhere where size doesn't matter.
You could also power multiple tubes form a single fan.

 

[Crafts4Me]

hi
i need a 2-3 " fan mounted in my house thats about 10"
the vapor is directed to appear coming out of the pot
however it pools and makes everything wet
i want to add a fan to my chimney to pull the vapor up
is that possible?

 

[bertus]

Hello,

2-3 " is about 50 to 75 mm.
A lot of fans have a size of 40 or 60 mm.

Bertus

 

[Crafts4Me]

thanks
i ordered a 3" waterproof fan nd will mount inside the chimney to blow out
lets see if it works as i imagine

 

[Martaine2005]

i need a 2-3 " fan mounted in my house thats about 10"

No it’s not!

 

[Harald Kapp]

No it’s not!

How do you know that the house is not 10'' tall?

 

[Harald Kapp]

i need a 2-3 " fan

Not tiny...
The ones I linked are even smaller.

 

[Crafts4Me]

the smaler ons are not waterpproof this si the smalles waterproof one i found in areasonable price as a test
lets see
i will report back
house is 10" tall 8" widex 7" deep
thats very small

 

[Crafts4Me]

hi
i purchased the tiniest 12v wayterproof fan 1" x 1"
most of my house fans on the other side act as an exhaust
this one doesnt seem to exhast.
is there anything i can do to it to create the exhaust function?

https://he.aliexpress.com/item/1005006103073146.html?spm=a2g0o.order_list.order_list_main.35.5aa71802OdDmf8&gatewayAdapt=glo2isr

 

[bertus]

Hello,

Your link does not work.
It requires a login.

Bertus

 

[Crafts4Me]

 

[Crafts4Me]

https://he.aliexpress.com/item/1005006103073146.html?spm=a2g0o.order_list.order_list_main.35.5aa71802OdDmf8&gatewayAdapt=glo2isr

 

[Martaine2005]

Have you wired the fan correctly?
It may be pulling air rather than pushing?

 

[Crafts4Me]

there is only 1 way to wire otherwise it wont work there is a + and - thats it
in my application mini rooftop i have the fan in backwards menaing outside it blows cool
i thought it would exhaust the vapor from inside and it does not

 

[Martaine2005]

Perhaps it’s spinning too fast.
Slow it down with a lower voltage source. See if that works.

 

[Crafts4Me]

with a motor speed adjustor? it is spinning very fast and is very noisy

https://he.aliexpress.com/item/1005005281241829.html?spm=a2g0o.order_list.order_list_main.115.5aa71802OdDmf8&gatewayAdapt=glo2isr

 

[Martaine2005]

Forget that!
I think you need a much lower RPM.
Perhaps 200-500 RPM. A motor with a gearbox would be ideal.

 

[Crafts4Me]

all the fans are much too large
i need this size
the speed adjustor makes it much slower
i need to refill and test the vaporizer again
i will report tomorrow

 

[ivak245]

What voltage is marked on the fan and what voltage are you using? The ad mentions 5-12v, but they are usually a fixed input voltage.