Kierbob Posted June 13, 2016 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 Share this post Link to post Share on other sites
BedOSpines Posted June 13, 2016 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? Share this post Link to post Share on other sites
Bigred Posted June 14, 2016 Whats your budget as i have fans for all occasions Share this post Link to post Share on other sites
Kierbob Posted June 14, 2016 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 Share this post Link to post Share on other sites
Cue Posted June 15, 2016 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. 2 Share this post Link to post Share on other sites
Kierbob Posted June 15, 2016 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? Share this post Link to post Share on other sites
Cue Posted June 19, 2016 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. 4 Share this post Link to post Share on other sites
Kierbob Posted June 19, 2016 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. Share this post Link to post Share on other sites
Cue Posted June 26, 2016 (edited) 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 June 26, 2016 by Cue 1 Share this post Link to post Share on other sites