mel jacobson on mon 27 dec 04
nils has come up with a very unique idea
to create turbulence in the burner tube.
he drills three orifice holes of a size
that equals what he wants. they are drilled
at an angle. when the gas comes out of
the three orifices they create a small swirl,
it starts the gas moving in random motion.
our burners have never burned back. at least
i cannot remember them ever doing that.
but then, we rarely fire them when they are
not roaring at high. and, they never back fire
when going full speed ahead.
Minnetonka, Minnesota, U.S.A.
web site: my.pclink.com/~melpots
or try: http://www.pclink.com/melpots
Ivor and Olive Lewis on tue 28 dec 04
<they are drilled at an angle. when the gas comes out of the three
orifices they create a small swirl,>>
Mel, this is a variation of the configuration of one form of oil
burner nozzle which has been around for many years. Gives excellent
atomisation of light oil under a relatively low pressure in a low
velocity stream of air.
A "Venturi" is a device, a tube with reversed conical restriction
within which accelerates the velocity of gas or fluid flowing along
it, creating a region of low pressure at the minimum diameter. The
same principle operating on the upper surface of the wings holds
aircraft in the atmosphere as they move.