Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 53 users online :: 6 registered, 0 hidden and 47 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], csitas, Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

I Has Fridge Compressor But No Skillz

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
Sponsored 
  • Author
    Message

Unread postAuthor: jackssmirkingrevenge » Tue Apr 13, 2010 1:07 pm

I would add a few more holes to the bottom, you don't want to stress the fan motor either ;)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Technician1002 » Sun Jul 11, 2010 10:08 am

If it helps at all, for very high power transmitter tube such as Radio and Television (50-200KW) the tubes have fins on the anode (hot part) and it is mounted in a "Chimney". The transmitter final is under pressure with a blower much like a leaf blower and air goes past the tube, through it's fins and up the chimney to carry the heat away.

Here are a couple of transmitter tubes outside the transmitter. You can see they are serious in regards to the tube cooling.
Image
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: MrCrowley » Fri Nov 12, 2010 9:35 pm

Found a compressor for $5 on an auction website so I thought i'd buy it for a rainy day since it was cheap as chips.

Image

Indel B G.E.3 compressor, problem is I can't find any technical data on it and i'm not quite sure how I wire it up since the controller isn't connected to the compressor. On the side of the compressor is 3 prongs sticking out and that's it.

No rush to get it working or anything, my hybrid is fulfilling all my current needs :D
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: Technician1002 » Fri Nov 12, 2010 10:35 pm

That is a 24 volt DC compressor. The finned package on the right is the inverter to drive the compressor with an AC signal. The inverter should have a + and - input. Too bad the wire between the compressor and controller is missing. Time to spend more time in Google. Maybe if you find the diagram of the appliance this is from, you may get lucky and find a diagram from there.

Can you ask the seller what this is from including the model number?

It looks like it may fit something like this;
http://www.sailgb.com/p/indel_b_cruise_49_compressor_fridge_c2943_49_litre/

EDIT FOUND A DIAGRAM..
www.isotherm.se/pdf/ManDR49_65Sv.pdf

Here is more info on the same series under another name;
www.novakool.com/support/bd35f_compressor_data.pdf

The 3 wires connect to the 3 pins as this compressor has 3 windings all the same.
  • 0

Last edited by Technician1002 on Fri Nov 12, 2010 11:31 pm, edited 5 times in total.
User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: MrCrowley » Fri Nov 12, 2010 10:43 pm

He said in the auction:
Item ex Motorhome Builder receivership
This unit was in the company store room


The model of the compressor is G.E.3, that's all it seems to say.

edit: Yes, I believe it is from a mini fridge like that.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 5:38 am

I also has fridge compressor and no skillz!

Do I add a switch to the thermostat cable and run it as such? Can I just bridge the thermostat circuit so it runs whenever I plug it in?
  • 0

Attachments
Photo0177.jpg
Photo0177.jpg (33.22 KiB) Viewed 1432 times
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 5:50 am

Do I add a switch to the thermostat cable and run it as such? Can I just bridge the thermostat circuit so it runs whenever I plug it in?
Both would be ok.... though IMO it is better to have a switch, as it's more convenient
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 5:57 am

POLAND_SPUD wrote:Both would be ok.... though IMO it is better to have a switch, as it's more convenient


I'll give it a go when I get home, would be nice to have a "low" HPA range alternative to my SCUBA :)

Also, a friend of mine just took apart a camper van which apparently had a minibar fridge... I still haven't seen it but I sense the potential for on-board HPA for the landy :D

As a side note, I see there seems to be no mention of fridge compressors in the wiki. How does one edit it? It also seems to be lagging in general behind the forum and doesn't reflect the material and design progress that happens here on a regular basis.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 8:14 am

I see there seems to be no mention of fridge compressors in the wiki
I can't post there because I can't log in there (my member name/login has '_' in it :roll: )

Personally, I think it would be better if someone made a step by step video on how to remove & wire a fridge compressor, how to attach the output tube to threaded fittings, why you need a BV for venting etc.
If a pic is worth 1000 words... then a 10 minute video is better than a couple of pages of text

Also, a friend of mine just took apart a camper van which apparently had a minibar fridge... I still haven't seen it but I sense the potential for on-board HPA for the landy

At least you'd stop using the phrase 'urban environment' and 'collateral damage' as an excuse

Look what I found while searching for my original thread
'fridge compressor' + author 'POLAND_SPUD'
Search found 111 matches


Fridge compressor
Search found 303 matches


:wink:

ohh btw I also found a cool video
[youtube]http://www.youtube.com/watch?v=bAZGkny8g64&feature=player_embedded[/youtube]

EDIT
Do you think it would be possible to use the starting winding to get more power? (for example if you want to achieve higher pressures)
That would probably require an efficient cooling system...
  • 0

Last edited by POLAND_SPUD on Sat Nov 13, 2010 12:51 pm, edited 1 time in total.
Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 8:47 am

POLAND_SPUD wrote:Personally, I think it would be better if someone made a step by step video on how to remove & wire a fridge compressor, how to attach the output tube to threaded fittings, why you need a BV for venting etc.
If a pic is worth 1000 words... then a 10 minute video is better than a couple of pages of text


That would indeed be helpful. You have a camera, no? And it would be cool to have the instructions in a Polish accent :D

At least you'd stop using the phrase 'urban environment' and 'collateral damage' as an excuse


Not exactly many open areas I can drive to but it would certainly exapnd my horizons :)

Look what I found while searching for my original thread
'fridge compressor' + author 'POLAND_SPUD'
Search found 111 matches


We know, we know, when it comes to encouraging people to release freon into the atmosphere, you the man :D

ohh btw I also find a cool video


Hadn't you posted this before?
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 9:23 am

lol PUI FTW!!

Are you sure none of your ancestors were polish ? :wink:

It wouldn't be a bad idea to organise a meeting for European spudders (preferably in a country where booze is cheap) :wink:

EDIT
lol sorry but I concluded that you were drunk cause you made a couple typos :roll:
but it's your fault not mine :D
  • 0

Last edited by POLAND_SPUD on Sat Nov 13, 2010 1:45 pm, edited 1 time in total.
Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Technician1002 » Sat Nov 13, 2010 1:34 pm

Do you think it would be possible to use the starting winding to get more power? (for example if you want to achieve higher pressures)
That would probably require an efficient cooling system...


The short answer is NO. The start winding is offset 90 degrees from the main winding. It's only purpose is to pull the rotor off center to impart rotation. Once up to speed, the magnetic field induced in the rotor goes back and forth at the same rate the applied AC power pushes it. The very high power the start winding draws will burn it out in less than a minute in many cases, or you will blow a circuit breaker. It does not add high power torque to the compressor once it is up to speed.

Some compressors are designed to have a limited current in the start winding after it is started. The start current and run current and phase shift for the magnetic angle required is done with run and start caps. This is often seen on high start torque high power compressors for central air conditioning.

This diagram shows a typical Capacitor start diagram. The Capicator phase shifts the current in the start winding and that switches out after the motor comes up to speed.
Image

A start run setup uses a high value start cap and then switches to a low value run cap. This setup is often used on larger compressors and may work for a fridge. You will want to use a much smaller cap as you are using a much smaller compressor. The compressor and cap need to be matched in size.
Image

Do not simply connect the start winding to power without a cap and leave it on. It will burn out the winding.

Try using a 4MFD 350 volt run cap.
  • 0

User avatar
Technician1002
Chief of Staff
Chief of Staff
 
Posts: 5190
Joined: Sat Apr 04, 2009 11:10 am
Reputation: 14

Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 1:41 pm

It wouldn't be a bad idea to organise a meeting for European spudders (preferably in a country where booze is cheap)


I might be travelling to Poland next year with the lady :)

Anyway, back on topic:

Before I plug this in, have I got it the right way round?

edit: looking at the previous photo before I ripped everything off, it seems I have got it wrong. The loose black wire should be live, yes?
  • 0

Attachments
noskillzwhatsoever.JPG
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: POLAND_SPUD » Sat Nov 13, 2010 1:58 pm

hard to say.... but it was attached to something before you started playing with it, right ? check what it was
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: jackssmirkingrevenge » Sat Nov 13, 2010 2:09 pm

check my edit, it was live :) and I was compressor! woo!
Very disappointing whirring noise, is it meant to be so quiet? Or does it get louder under load?

While we're asking 'lectric questions, I have this rather nice cooling fan, I presume it's an AC motor but no live or neutral markings on the pins and the wires aren't colour coded - does this mean I can connect it either way?
  • 0

Attachments
CIMG1273.JPG
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

PreviousNext

Return to Construction Materials/Ammo Discussion

Who is online

Registered users: Bing [Bot], csitas, Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'