Author Topic: WVO Burner  (Read 6204 times)

Offline unc1esteve

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WVO Burner
« on: November 09, 2013, 07:07:34 PM »
I have wanted a foundry for some time.
I thought I would start with the burner.
I will use waste vegetable oil as I have a
source for good clean oil.

I saw a video of a burner that was just a fuel
line and a venturi.  I made one but having no
experience with burners I could not compare it
to anything.  After posting with vtsteam I made
a kwiky burner for comparison.

I started by collecting and filtering the oil.  I first
used a colander to remove the large particles.  Then
I used a flour sifter to remove smaller pieces.  And
then used the filter in the coffee pot.

I bought a 48 cup perculator from the thrift store.  I  removed
the valve and replaced it with a brass ball valve for a
safety shut off.  I am going to use copper tube for the
fuel line but I do not have the proper size compression fittings.
I used clear plastic tube now as I wanted to see the oil.  The pot
heats the oil very well.  I removed one of the heating coils because
I felt the oil was getting too hot.

The oil must be heated for the burner to light.  This includes the
oil in the fuel line.  Before lighting I drain the cold oil out of the
line and make sure hot oil is right up to the burner.  The pot
will be well away from the furnace in use.  It will have a drain
valve right at the burner.

A broken upright vacuum provided all the parts for a 2 inch blower.





Offline DavidA

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Re: WVO Burner
« Reply #1 on: November 09, 2013, 07:26:30 PM »
If you type 'turk burner' into google you will find lots on these things.

Here is one example.

http://uk.images.search.yahoo.com/yhs/search?_adv_prop=image&fr=yhs-CND-002&va=turk+burner&hspart=CND&hsimp=yhs-002

Dave.

Offline unc1esteve

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Re: WVO Burner
« Reply #2 on: November 09, 2013, 07:51:12 PM »
Have a fire extingisher handy and the area clear
before lighting.  The adjustment of the fuel nozzle
seems to be critical in getting the burner to light. 
I have not found the right spot as yet.

Offline unc1esteve

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Re: WVO Burner
« Reply #3 on: November 09, 2013, 08:01:54 PM »
I first made a burner of 1/8 pipe with the end extended
as vtsteam did.  This did not work well as it did not siphon.
I made another one of 1/4 pipe.  This works much better.
Also having the coffee pot above the burner helps.  I am
getting the drip vtsteam talked of.  Adjusting the nozzle
affects this.  Am going to play with the adjustment tomorrow.

I have viewed some videos.  Most show fire from a furnace and
lots of adjjusting but not the details of the burner. 
Will look at the UK videos tonight

Offline unc1esteve

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Re: WVO Burner
« Reply #4 on: November 11, 2013, 05:02:38 PM »
I reviewed the pictures DavidA posted.
I found one that was similar to the venturi burner.
I tried posting its address but it took a half of a page.

The coffee pot broke again but I was able to run the
burner with room temperature oil.

I made the first nozzle from a cap instead of a plug.  I thought
that the 3/32 hole was not the correct length, too short.  I made
another nozzle with a longer hole but it made no difference.
It seems the only adjustment that affects the flame is the distance the
nozzle is from the mig tip as vtsteam mentioned.

I made a venturi and a flare.  The flare makes no difference
at either end of the burner.  If fitted at the flame end the venturi
speeds up the air flow but puts out the flame.  Fitted at the other
end it restricks the air flow but makes a definite improvement
in the flame and the heat.

The burner will not work with the vacuum blower.  If I blow a hard
breath into the burner it will flame out.  I am going to let the flame burn
on a large piece of steel and see if it will burn more oil.  If it does
I will try the blower again.  Need to move this operation outside.

Once the nozzle is set this thing is a monster.  I have no doubt
it will melt case iron.

It is easy to build and I would recommend it to any one that has
a supply of waste oil.

Offline unc1esteve

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Re: WVO Burner
« Reply #5 on: November 13, 2013, 10:08:33 PM »
I have been adjusting the nozzle with a socket and an extension
in between burns.  I decided to take it apart and make an
adjustable handle so the nozzle could be positioned while burning.

The tubing is held to the outer burner tube by the coupling at
the oil line,  A collar and a washer provide the correct spacing.
The mig tip is hard soldered to a 1/4 tubing.  At the other end the
tubing is placed inside a collar , swedged and then hard soldered
to the 1/4 nipple.  This added room for the oil improves the
burner performance.  There does not seem to be very much siphon
power.  The outer burner tube is 16 in length.  The nozzle
is 5 1/2 from the end of the tube.  I do not know if these dimensions
are critical.  I wonder if changing the oil hole size would help with
the drip?

I used a 3/16 dia rod for the adjustment handle.  I machined a
groove about one third of the tube diameter.  As I had made another
nozzle with a deeper 3/32 hole I used it for this purpose.  I threaded
6 holes around it as I did not know the correct position when assembled.



Offline unc1esteve

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Re: WVO Burner
« Reply #6 on: November 13, 2013, 10:34:17 PM »
Drawing of a similar burner.
http://backyardmetalcasting.com/bigpics01/oilburners10_B_burnerdiag.jpg

Uses propane to start.