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Reverse Flow Fans?

post #1 of 31
Thread Starter 
I am working on a mod inside my HAF-X that will eventually close of all the 5.25" and hdd bays which will have 3 140mm fans blowing air into the system. The problem is with normal fans when they blow air into the system, the ugly parts on the back are showing. I need to find a fan that will blow air into it with just the blades showing. So I need some 140mm case fans that will blow air in the opposite direction to the typical fan. Can anyone help me with this?
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post #2 of 31
Thread Starter 
Don't worry. I will just add some fine dust filter mesh in between the panel and fans so the backs of the fans aren't viewable.
540 Storm Trooper
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540 Storm Trooper
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post #3 of 31
Most case fans can just be turned around to blow the other direction. biggrin.gif
post #4 of 31
Thread Starter 
These fans will be towards the front of the case and I don't want air being pushed out the front of the case. Besides it won't flow with the rest of the thermal design I have.
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post #5 of 31
The side of fan with blades showing is the side pulling air. The side with braces to support motor is blowing air out.

"Reverse flow" = air moving opposite direction = air out instead of air in. .. so what are you talking about? confused.gif
post #6 of 31
Thread Starter 
Quote:
Originally Posted by doyll View Post

The side of fan with blades showing is the side pulling air. The side with braces to support motor is blowing air out.

"Reverse flow" = air moving opposite direction = air out instead of air in. .. so what are you talking about? confused.gif

Like I said in my original post, I want the blades to be visible when looking inside the case, but the air still needs to be pulling air through it. So in other words, I want to turn the fan around but still have it blow air in the same direction.
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post #7 of 31
I might be wrong, but I dont think you will find something like that. wink.gif
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post #8 of 31
What you are asking is possible, but not a simple project unless you have a decent level of experience, working with electronics.

You can change the direction of the fan but since it's a DC motor, it takes more than simply reversing the power connectors. The common solution is to reverse either armature or field.
I have done this a few times, and it is not really that difficult. But depending on your level of experience, you may not feel the same.

I won't go into a detailed guide here. Others have done that better than I could and they are easy enough to google.
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post #9 of 31
Quote:
Originally Posted by Dire Squirrel View Post

What you are asking is possible, but not a simple project unless you have a decent level of experience, working with electronics.

You can change the direction of the fan but since it's a DC motor, it takes more than simply reversing the power connectors. The common solution is to reverse either armature or field.
I have done this a few times, and it is not really that difficult. But depending on your level of experience, you may not feel the same.

I won't go into a detailed guide here. Others have done that better than I could and they are easy enough to google.
Reversing the direction of the motor does not solve the problem as the fan blades are still designed to turn the original direction. Very few fans have non-directional blades. wink.gif
post #10 of 31
If your looking in from the front of the case (outside) then you will see the blades of the fan that will be pushing air into the case. and not the motor supports.
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