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TheUnknownPoet
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18 x 24 Open Source Flowhood (SKP File)
#21298716 - 02/19/15 12:36 PM (9 years, 10 months ago) |
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Log in to view attachment
So I've decided to release my design open source. A few things to note is that the top section with the blower connets to the bottom section of the hood (So that the filter can be taken in and out more easily via chest latches. There is a furring strip that should go between these two pieces to prevent airflow.
Anyways, I haven't seen anyone open source plans, so I'll be the first. Feel free to add any extra tidbits you think might improve the hood and post it in this thread if you are so inclined!
It is made for a blower with an 8" blowing hole. This is for sketchup 2015.
IF ANYONE KNOWS HOW TO DO FLUID OR AIRFLOW SIMULATIONS, PLEASE LET ME KNOW. (I'm in the process of building this however, and will post wether or not it works once I'm done.)
Made with 1/2 inch sheets of white melamine. The screw positions are not modeled here, I pretty much have to figure that one out on my own.
CHEERS!
Attribution: Please link to this thread if you post it anywhere else.Please give credit to The Unknown Poet. You are free to copy, modify, and redistribute as long as credit is given, but not for commercial gain.
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secretagent
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21298747 - 02/19/15 12:42 PM (9 years, 10 months ago) |
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For a fluid simulation software you will need to export the file as a .dwg file (AutoCAD) as it is the standard for software such as Solidworks. Here is a how-to video for "Tutorial : How to import google sketchup in to solidworks"x.
I've only had a very brief introduction to Solidworks, but I'd assume that whether you get laminar or turbulent flow will also be very dependent on what HEPA filter you are using. It will also depend on the flowrate from the blower.
If I'm to give the simulation a try you will need to provide both a new file and some necessary information.
Edited by secretagent (02/19/15 02:28 PM)
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Th3Issu3
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21298962 - 02/19/15 01:17 PM (9 years, 10 months ago) |
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: Th3Issu3]
#21299287 - 02/19/15 02:18 PM (9 years, 10 months ago) |
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Im not sure how to take your reply....
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21299290 - 02/19/15 02:19 PM (9 years, 10 months ago) |
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Oh, its made for a 5.8 inch thick filter from fungi.
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secretagent
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299319 - 02/19/15 02:26 PM (9 years, 10 months ago) |
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Quote:
TheUnknownPoet said: Im not sure how to take your reply....
What part of it was unclear?
Edited by secretagent (02/19/15 02:26 PM)
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21299479 - 02/19/15 02:59 PM (9 years, 10 months ago) |
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Not you, i meant Th3Issu3 . I don't understand his reply, lol. It seems a bit condesceding and non-constructive.
Anyways, i'm looking for opinions on my design.
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Junior Fungus
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299495 - 02/19/15 03:04 PM (9 years, 10 months ago) |
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Well I interpreted his reply as "holy shit this is out of my league, I'm outta here"
-------------------- My Grow Logs: Psychoactives Edibles & Medicinals
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: Junior Fungus]
#21299499 - 02/19/15 03:05 PM (9 years, 10 months ago) |
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Oh wow, re replied to the fluid simulation. I just noticed this. I'm a dumbass. Please disregard. Hahaha
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21299501 - 02/19/15 03:06 PM (9 years, 10 months ago) |
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Quote:
secretagent said: For a fluid simulation software you will need to export the file as a .dwg file (AutoCAD) as it is the standard for software such as Solidworks. Here is a how-to video for "Tutorial : How to import google sketchup in to solidworks"x.
I've only had a very brief introduction to Solidworks, but I'd assume that whether you get laminar or turbulent flow will also be very dependent on what HEPA filter you are using. It will also depend on the flowrate from the blower.
If I'm to give the simulation a try you will need to provide both a new file and some necessary information.
Anyways, back on topic. Does this mean I have to model a perfect representation of my filter to see how it'll flow? Hurrah i guess?
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secretagent
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299538 - 02/19/15 03:13 PM (9 years, 10 months ago) |
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Quote:
TheUnknownPoet said:
Quote:
secretagent said: For a fluid simulation software you will need to export the file as a .dwg file (AutoCAD) as it is the standard for software such as Solidworks. Here is a how-to video for "Tutorial : How to import google sketchup in to solidworks"x.
I've only had a very brief introduction to Solidworks, but I'd assume that whether you get laminar or turbulent flow will also be very dependent on what HEPA filter you are using. It will also depend on the flowrate from the blower.
If I'm to give the simulation a try you will need to provide both a new file and some necessary information.
Anyways, back on topic. Does this mean I have to model a perfect representation of my filter to see how it'll flow? Hurrah i guess?
Yes, most likely. But it should be overkill if you have the required static pressure for the filter (to get laminar flow). The filter should probably have that data (at which static pressure you will have laminar flow out of it). The turbulence part after the filter is impossible to simulate with full data of the filter itself. Otherwise you can just make the area in front of the outlet a little deeper than you think is necessary and hopefully any vortexes will have died out before they can reach the edges. This would hopefully prevent any backdraft into your working area that could potentially have contams in it.
I've thought about it a bit more and I don't know how to simulate the problem to be honest. It's too complex without full data about the maximum pressure the pump will produce, and the data about the filter
Edited by secretagent (02/19/15 03:16 PM)
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21299579 - 02/19/15 03:22 PM (9 years, 10 months ago) |
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Quote:
secretagent said:
Quote:
TheUnknownPoet said:
Quote:
secretagent said: For a fluid simulation software you will need to export the file as a .dwg file (AutoCAD) as it is the standard for software such as Solidworks. Here is a how-to video for "Tutorial : How to import google sketchup in to solidworks"x.
I've only had a very brief introduction to Solidworks, but I'd assume that whether you get laminar or turbulent flow will also be very dependent on what HEPA filter you are using. It will also depend on the flowrate from the blower.
If I'm to give the simulation a try you will need to provide both a new file and some necessary information.
Anyways, back on topic. Does this mean I have to model a perfect representation of my filter to see how it'll flow? Hurrah i guess?
Yes, most likely. But it should be overkill if you have the required static pressure for the filter (to get laminar flow). The filter should probably have that data (at which static pressure you will have laminar flow out of it). The turbulence part after the filter is impossible to simulate with full data of the filter itself. Otherwise you can just make the area in front of the outlet a little deeper than you think is necessary and hopefully any vortexes will have died out before they can reach the edges. This would hopefully prevent any backdraft into your working area that could potentially have contams in it.
I've thought about it a bit more and I don't know how to simulate the problem to be honest. It's too complex without full data about the maximum pressure the pump will produce, and the data about the filter 
I can probably find out the data for both, the filter and the blower i have. But the blower I have is a squirrle cage I got out of the furnace, I don't even know the CFM for it.
It has three settings though- High, Medium, and Low. But it only seems to be adequate flow on the high. Does it matter if my blower is head on, or can I have it sideways? (I can save a lot of space if I put it sideways, but the blower draws from the side and if i have it sideways the back isn't getting any air. I'm afraid this will overheat it, but I can always put a thermocouple in it and make sure the temperature is allright.) What's the max temp my motor should be at?
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secretagent
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299825 - 02/19/15 04:17 PM (9 years, 10 months ago) |
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Quote:
TheUnknownPoet said:
Quote:
secretagent said: Yes, most likely. But it should be overkill if you have the required static pressure for the filter (to get laminar flow). The filter should probably have that data (at which static pressure you will have laminar flow out of it). The turbulence part after the filter is impossible to simulate with full data of the filter itself. Otherwise you can just make the area in front of the outlet a little deeper than you think is necessary and hopefully any vortexes will have died out before they can reach the edges. This would hopefully prevent any backdraft into your working area that could potentially have contams in it.
I've thought about it a bit more and I don't know how to simulate the problem to be honest. It's too complex without full data about the maximum pressure the pump will produce, and the data about the filter 
I can probably find out the data for both, the filter and the blower i have. But the blower I have is a squirrle cage I got out of the furnace, I don't even know the CFM for it.
It has three settings though- High, Medium, and Low. But it only seems to be adequate flow on the high. Does it matter if my blower is head on, or can I have it sideways? (I can save a lot of space if I put it sideways, but the blower draws from the side and if i have it sideways the back isn't getting any air. I'm afraid this will overheat it, but I can always put a thermocouple in it and make sure the temperature is allright.) What's the max temp my motor should be at?
Sideways? Sure, that shouldn't be a problem if the air pump is adequate. What you want is positive pressure within the box (compared to outside the box) and so the air only has one way out, through the filter  Temperature? No idea
Without good data of the pump/fan there's not much one can do in terms of a simulation at least that I know of.
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blindingleaf
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: secretagent]
#21299848 - 02/19/15 04:25 PM (9 years, 10 months ago) |
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no idea about the blower temp either, but i don't think it would matter. if the unit is in good condition it shouldn't overheat anyway. sideways or on top i think is fine too. either way, the back of the box is not getting hit directly. i really like the open source idea man, thanks for sharing!!
-------------------- A few thoughts on cultivation
MICROBIAL HUSBANDRY!!!!
The whole is greater than the sum of its parts
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: blindingleaf]
#21299864 - 02/19/15 04:30 PM (9 years, 10 months ago) |
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In this case, you can put the blower* on its side and drastically reduce the size, AND make yourself a little shelf in the process.
Edited by TheUnknownPoet (02/19/15 04:40 PM)
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blindingleaf
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299882 - 02/19/15 04:34 PM (9 years, 10 months ago) |
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wouldn't u just make it longer instead of taller though? maybe I'm not imagining it right. i can't open the file it says "i have to application to view it" i was just envisioning it from ur description.
-------------------- A few thoughts on cultivation
MICROBIAL HUSBANDRY!!!!
The whole is greater than the sum of its parts
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TheUnknownPoet
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: blindingleaf]
#21299909 - 02/19/15 04:39 PM (9 years, 10 months ago) |
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The blower is mouted facing you. It draws in air from both sides, through the pre-filer.
(P.S. get google sketchup)
If you mount it sideways, only one side is drawing air from the prefilter.
EDIT, I MEANT BLOWER, NOT FILTER. Holy shit. I'm trying to reduce depth.
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blindingleaf
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Re: 18 x 24 Open Source Flowhood (SKP File) [Re: TheUnknownPoet]
#21299952 - 02/19/15 04:47 PM (9 years, 10 months ago) |
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oh ok, thats why i was getting confused.
-------------------- A few thoughts on cultivation
MICROBIAL HUSBANDRY!!!!
The whole is greater than the sum of its parts
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