Welcome to the Solar Collector
Brainstorming and Development Page!


 

Home

Hot Air Collector

Hot Water Project 1

Hot Water & Space Heating

Solar Electric

Solar Construction 101

FAQs

Best Collectors

Simply Solar
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 1 of 5      1   2   3   4   Next   »
Bert

Avatar / Picture

Registered:
Posts: 533
Reply with quote  #1 
Has anyone made their own 12v damper? I have been thinking about this because I can't find any 8" round 12v dampers.
In my search it looks like servo motors are used. I know that some 24v dampers use a spring and a motor. Not sure if a spring and motor could be added to a manual damper.
It also seems odd that the current is continuously on in one mode and off for the other. Seems like the motor would burn up since it stops moving.
May have to bite the bullet and use a 24v transformer running off 120. if I really have to. Don 't want to go that route though.

__________________
Bert K.
Michigan

https://www.youtube.com/user/1thinkhealthy/playlists

colinmcc

Registered:
Posts: 163
Reply with quote  #2 
Bert, you are right that the dampers usually consume power when holding the system against the spring.. If you just want to only consume power when changing from open to closed I'd use a small linear actuator (try ebay..) I'd also visit your local car scrap yard, and see what sort of motors are used in electric windows or wipers for example. These would be 12v although they may take a fair bit of current for the few seconds when operating. But, they stay at the same position when the power goes off.

A wiper motor should have an arm attached that might be perfect to operate a damper. You'd just have to remove any 'return to neutral position switching, and add some end of travel switches. Possibly just  few $ in total, + your time!~ [smile]

I'd look for the rear screen wipe motor (only drives 1 blade so should be smaller current draw) and from a small car, again less amps.

Also car blown air heating systems usually have flaps in the air paths, (windscreen/foot well etc) in my ford these are vacuum driven, but I guess some (?) might be 12v. (I'm not a car guy!)

Finally, and this is a bit more complex, you could use a small stepper motor driven by an arhino or raspberry pi, then this would allow you to precisely position the damper via the so called Internet of Things ;-)

Good luck!
For example this looks like a 12v flap operating motor assembly  from a BMW.. $9...!
http://www.ebay.com/itm/BMW-E46-3-series-ac-box-flap-actuator-motor-6912524-/321914676481?hash=item4af39c2501:g:UGMAAOSwVL1WCXHk&vxp=mtr
Bert

Avatar / Picture

Registered:
Posts: 533
Reply with quote  #3 
Thanks for the ideas!
I do have a car lock actuator. Not sure if it will work. Waiting to get my hands on a manual damper so that I can experiment with it.


__________________
Bert K.
Michigan

https://www.youtube.com/user/1thinkhealthy/playlists
colinmcc

Registered:
Posts: 163
Reply with quote  #4 
The car lock actuator might be a bit 'violent' and yank the damper arm..?
Garage_Hermit

Avatar / Picture

Registered:
Posts: 2,240
Reply with quote  #5 
Bert,

Maybe check this out:

https://customer.honeywell.com/en-US/pages/product.aspx?cat=HonECC%20Catalog&pid=ARD8/U

I found a reference to it, by doing a search on here for "motorized damper" (all usernames) or something...

G_H

__________________
(1)  "Heat goes from hot to cold, there is no directional bias"
(2) It's wrote, "voilĂ " unless talking musical instruments...
Bert

Avatar / Picture

Registered:
Posts: 533
Reply with quote  #6 
The thing with that one is that it's 24v. I was looking for a 12v dc damper that could run off my solar panels like my fans do.


__________________
Bert K.
Michigan

https://www.youtube.com/user/1thinkhealthy/playlists
Bert

Avatar / Picture

Registered:
Posts: 533
Reply with quote  #7 
Quote:
Originally Posted by colinmcc
The car lock actuator might be a bit 'violent' and yank the damper arm..?


That's could be. I will find out. I think it would need a bar with a pivot just at the right point. Sort of like balancing a see-saw.

__________________
Bert K.
Michigan

https://www.youtube.com/user/1thinkhealthy/playlists
Garage_Hermit

Avatar / Picture

Registered:
Posts: 2,240
Reply with quote  #8 
it might work, but at half-speed ?

G_H

__________________
(1)  "Heat goes from hot to cold, there is no directional bias"
(2) It's wrote, "voilĂ " unless talking musical instruments...
Bert

Avatar / Picture

Registered:
Posts: 533
Reply with quote  #9 
Quote:
Originally Posted by Garage_Hermit
it might work, but at half-speed ?

G_H


Maybe, but most likely it's AC.  [frown]

__________________
Bert K.
Michigan

https://www.youtube.com/user/1thinkhealthy/playlists
colinmcc

Registered:
Posts: 163
Reply with quote  #10 
A google search shows that some fridge/deep freeze combos have a 12V  DC powered flap that allows air to pass/not pass between chambers in the fridge. The Samsung one I found said it took only 60ma, but there was no pic to show what it looked like.  So you might also try your local appliance repair shop (if such a thing still exists in your neck of the woods ;-) or a recycling place where they break fridges etc  They might point you at a suitable motor assembly.
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics