We have a pizza oven that vents smoke out the cracks between the door and the unit:
It's amazing, but fills the first floor with smoke if you misplace a pepperoni. My wife is pregnant, so that's no good.
Without going into a ton of detail, I can't install a kitchen fan and the current exhaust fan is no good. But, the unit is right next to a window, so I'd like to build a little "extractor" that sits on top of the oven, sucks up the air, and vents it directly out the window, which is only a foot away. Note that the top of the oven is cool to the touch even when running. Also note this will always be operated under constant supervision.
Should I use a vacuum pump and tubing for this, like this one?
Or, maybe some contraction on top of the unit with several fans? If I do that, I'm not sure how I'd vent them to the window.
dlloyd:
What's wrong with it? If it runs, but the CFM is too low, is there enough outside air coming in to replace the extracted air?
The exhaust fan we have is through our microwave, which the pizza oven will not fit under because of our range. If we put the pizza oven to the side, it doesn't pull enough of the smoke.
If you know a tin bender you can easily make a custom fume hood or Google "fume hood" to get some ideas. I worked with plenty of ovens over the years and we often had people come in and replace the insulation seal around the doors of large walk in ovens. Electric fired are no big issue but anything gas fired should have adequate venting. Ours were all electric. Anyway, I would look at fume hoods to get some ideas.
How hot can the air get? Any extractor will need to survive this temperature without melting down.
Extracting too fast will chill the oven, so you want to experiment to find how much airflow is needed.
You need a computer fan like this:
This would work with some ducting, and the 5 V version can be easily powered using a USB "Phone charger".
If you wanted to control the speed, then you might need to actually use an Arduino to control a 3-pin computer fan with some form of sensor to monitor how much draught was required.
