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Kierbob

Flow Hood Blower

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Hey guys, currently on the mission to build a budget yet decent flow hood.

 

I am having trouble sourcing a decent blower in Vic, or Aus for that matter.

Reading up it seams that "Squirrel cage blowers" are the best bet for minimum turbulence and maintaining static pressure,

 

Does anyone know what these would be called in Australia and what applications they may have so I can go about finding one?

 

Cheers,

 

Kierbob

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centrifugal fan or blower are the same thing. They have a 'squirrel cage', not real cheap in aus though. Do you know the filter specs? 

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Whats your budget as i have fans for all occasions

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Hey guys,

The filter I've been looking at is the 64cm x 32cm x 15cm HEPA from Here

If anyone knows of a cheaper suitable filter let me know! 

 

I've calculated ideally I would want a 250 cfm blower to achieve laminar flow so I wouldn't want anything smaller than that. 

 

Budgets fairly tight! I'm hoping to build the whole thing for under $400

 

Ive sent you a pm bigred 

 

Cheers 

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Instead of doing all of the calculating I got one bigger than I needed and adjusted the blower's fan speed with a fan speed controller.

4 out 3 people aren't good at math.:wacko:

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Haha yeah good idea! Depending on what I can find I'll definitely opt for slightly larger than needed. Where did you find your blower Cue? 

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I bought mine at a local hydroponic shop.

I was told that I needed 650-675 cfm, so I had to go with 8" that pushes 745 cfm.

http://www.hurricane-fans.com/shop/bybrand/hurricane/hurricane-centrifugal-inline-fans

 

I call her Big Bertha.

BTW the wife ain't too happy with her setting in the dining room.

IMG_20160522_092608.jpg

IMG_20160522_092608.thumb.jpg.fdc4318937a5a26afcfc4b9c2da9b455.jpg

IMG_20160522_092608.thumb.jpg.fdc4318937a5a26afcfc4b9c2da9b455.jpg

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Oh so you're just using an inline fan rather than one of the "squirrel cage" ones? Do you have any internal baffles or is the fan just blowing directly down into the box? 

 

How long have you been running this design and have you had any problems? 

 

Cheers man. 

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On 6/19/2016 at 6:15 AM, Kierbob said:

Oh so you're just using an inline fan rather than one of the "squirrel cage" ones?

Yes.

 

On 6/19/2016 at 6:15 AM, Kierbob said:

Do you have any internal baffles or is the fan just blowing directly down into the box? 

In stead of baffles I'm using a fan speed controller.

 

On 6/19/2016 at 6:15 AM, Kierbob said:

How long have you been running this design and have you had any problems? 

I built it only about 2 months ago.

The only problem is its size and weight. But I wanted it big so that my pressure cookers could cool in front of it.

Edited by Cue
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