kind of Smart Kitchen Hood
kind of Smart Kitchen Hood
This is a followup of my last post where I was looking for a solution to our problem with smell coming from the kitchen hood (extractor) when neighobour is cooking. I got many good suggestions, but @Finlsolo963 pointed me to Shut-off Damper with motor that looks like perfect fit. I hope it can stop the smell completely in closed position and open automatically when we start using hood.
I was looking at this Damper
I could use Shelly Plus Plug S to detect power usage of the hood which trigers Shelly 2.5 to open Damper. After turning off the hood, power will go down and automation would triger another channel of Shelly 2.5 to close the Damper.
What do you think about the setup? Is there any better hardware you would suggest? I dont mind spending more for beter sealing when Damper is closed. I like the one from the link mostly because its 220V and I could use shelly relays which seems super simple to implement. I already own Shelly Plug S that I could use, but its not a must. Im also opet to zigbee devices.
Bonus question: what would happen if something goes wrong and both channels of Shelly 2.5 triger at the same time? It would be like pressing Open and Close buttons at the same time.
Thanks in advance
Your Shelly 2.5 also has 2 inputs: SW1 and SW2. You could also wire one of those in to the hood so it can directly detect if it's powered. If that's possible... Idk, it needs to be after its switch. likely the hood isn't made for this and you'd need to mess with the internal wiring. Your setup is a bit easier.
I'm not sure what happens if both channels are active simultaneously... Some devices handle this and prefer one direction, but not all of them. I can't tell from the eBay page.
Thx
Damper from the link require both channels, one for opening and another one to close it. I could use another single channel shelly for the hood tho.
No, I mean for the input sensing. To see if someone pushed the switch for the hood... The shelly 2.5 has 2 outputs and 2 additional inputs for switches. You cant't control a third device. But you can measure if there's mains voltage on 2 additional inputs. If wired correctly to the switch of the hood... You can detect if it's on and control the 2 damper channels all with one shelly 2.5
I think the 2 outputs are like controlling blinds. That's a fairly common use-case for something like a shelly 2.5 and should work fine.
Err, a standard damper closes automatically when you're not using the hood. When you turn on the hood, the pressure opens it up and you're good to go. Physics automation.
Yeah, I have this one right now
It stopps the smell 90%, so still stinks ater long cooking. I believe it goes trought tiny holes around the hinge. As I mentioned in previous post, I also added filter and still sucks.
Most motorized dampers I found are also spring loaded in closed position, but motors are DC 12V or 5V which seems to be more complex to implement than 220V one from ebay.