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Патент USA US2404423

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July 23, 1946-.
2,404,423
J. L. ANDERSON
METHOD AND APPARATUS FOR PROTECTING BURNERS
Filed April 24, 1942
_
INVENTOR
JAMES L. ANDERSON
BY Z
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ATTORNEY
Patented July 23, 1946
I 2,404,423
UNITED’ ~ STATES PATENT {OFFICE-t,"
METHOD AND APPARATUS FOR
PROTECTING BURNERS
James L. Anderson, Closter, N. J., assignor to Air
Reduction Company, Incorporated, New York
N. Y., a corporation of New York
7
Application April 24, 1942, Serial No. 440,295
8 Claims. (01. 158—27.4)
1
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This invention relates to methods for protect- ,
ing gas burners from acquiring deposits of foreign
matter that would build up on the burner and
, eventually obstruct or clog the burner ori?ces;
and to apparatus for carrying out the method.
In its broadest aspects, it is an object of the
ter of the material of the work piece, but in other
instances the deposit is made up’ of particles
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a condenser plate is located in front of the ‘burner
and water vapor in the products of combustion
condense on this plate and the burner as well. In
a modi?ed embodiment, the-plate is ?ooded'with
water from a supplypipe.
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Other objects, features and. advantages of the
invention to prevent, or minimize, the accumu
lation of particles from a Work piece on the face
of a torch or burner that is being used to heat the
work piece. Such particles are sometimes a‘spat
2
In the preferred embodiment of the invention
invention will appear or be pointed out as the
speci?cation proceeds.
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In the accompanying drawing, forming a part
hereof:
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Fig. l is a side view, partly in section, showing '
a torch protected from the deposit of foreign‘mat
formed by reactions incident to the heating or
working of the work piece, such as oxides gener
ter in accordance with this invention.
glass working burners since certain glass'working
to show the torch or burner.‘
.
15 _ Fig. 2 is a front View of the apparatus shown
ated in the reactions.
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in Fig l,‘but with much of the plate broken away
The invention will be described as applied to
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Fig. 3 is a top view of "the apparatus shown-in
operations cause such a ‘rapid accumulation of
the
other views, and with the plate in section;
material On the torch or burner that it has not
been practical continuously to perform these 20 Fig. 4 is a view similar to Fig. l, but showing
a modi?ed form of the invention.
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operations by means of oxy-fuel gas ?amess
A mixture of oxygen and fuel gas is supplied
Sometimes there is a visible spatter of material
to a burner or tip ll through pipes I6 and 16’.
from the glass-to the burner, but at other times
The tip shown in the drawing is made up of‘ a
burners become coated and their ori?ces ob
burner block portion l3 and a number of tip ele
structed and thenclogged. within a short time
with no noticeable spatter. Apparently there are
microscopic particles thrown off against the‘ face
of the burner at velocities highv enough to ad
Vance against the gas streams.
I have found that a ?lm of water or moisture
completely covering the burner and a sheet of
water interposed between the burner and the
work prevent the deposit of material on the
burner. If the particles are ‘not soluble in‘ the
water they are at least chilled so that they "do not
adhere easily, if at all; but in the case of glass
working,v the material that coats the burners is
entirely, or to a large extent, ‘soluble in water.
In accordance with one feature‘of the invention,
a vsheet of water is maintained in front'of the
burner for dissolving the foreign matter-“that
would otherwise accumulate on the burner and‘
obstruct the gas flow. It may be said, therefore,
that it is anotherobject of the invention to pro
ments I4 and I4’. There is a jet ori?ce l5 open
ing through each of the tip elements l4, and ,a jet
ori?ce l5’ similar tothe ori?ces l5, except for its
smaller size, opening through the tip element 14’.
Because of-the difference in size of the ori?ces in
the tip elements 14 and [4’, separate gas distrib
uting chambers for these ori?ces are provided in
the tip block, and gas mixtures for the respective
distributing chambers are supplied from ’ sep
arate mixers. The gas mixture for the tip ele
ments i4 is supplied through a pipe l6 and that‘
for the tipelement l4’ through a, pipe 16'.‘
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The tip or burner block is water cooled. Tubes
I1 and I1’ connect with the cooling ?uid pas!
sages l8v within the blockv and. serve as the con;
duits ‘for the supply and. discharge of cooling ?uid.
Suf?cient cooling liquid is supplied to. keep the,
block and the tip elements at a temperature low
enough to cause water vapor to condense on
them.
the burner clean and prevent the ori?ces from
A metal condenser plate or shield 19 covers
becoming. obstructed.
the face of the’ tip and is located‘ just in front
Another object is to obtain the water, for pro
of the ends of the tip elements I4 and is con
tecting the burner, by condensing the water va
nected
with the block element of the tip by end
por in the products of combustion formed by 50
members 20. There are openings 2| in the plate
the burner ?ames. If‘ hydrogen is used as the
ill in register with the jet ori?ces I5, l5’of the
- fuel gas, there is an ample supply of water vapor.
If natural gas, city gas, or other fuel that gener
The condenser plate [9 is cooled by circulat
ates insufficient quantities of water vapor is used,
ing
a cooling ?uid, such as water, through a tor
55
then water is obtained from some other source.
vide a sheet of water in front of a burner to keep
tip.
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2,464,423
tuous ‘tube, 23 that is secured to the back; of the I
that projects ?ame jets against a glass work
plate l9,’ preferably by silver solder 24.
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In the operation of the burner, the streams
of gas from'the jet ori?ces I 5 are projected
through the openings 2|. in the shield 19. and
toward a work piece 25. The tip or burner II
’piece, the method of protectingthe burner from
becoming obstructed comprising continually pro
ducing a sheet of watervbetween the burner and
v the glass.
4. In the use of oxy-hydrocarbonfuel gas burn
' ers ‘forglass working operations in which ?ames
from such burners are projected against the glass,
is for piercing glassware, but it; will be under-,
. stood that a similar shield can be used with‘ torch"
tips for reaming, cutting, welding, or other’ op-.
erations.
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the method of preventing the accumulation of .
10 spatter on the tip, which method comprises in—'
.
The oxy-fuel gas mixtures burn between the
imposing a metal'plate between the burner and
the glass work-piece, projecting the gas jet or
jets from the burner through openings in the‘
'plate [9 and the work piece 25, Some of". the
products of combustion come into contact with
the face of the plate I9 and water vapor in the ’
plate, and cooling the plate from the backto av
products of combustion condenses on the vcool " temperature less than the boiling point of the
face of ‘the plate. As the accumulation of, water
increases on the front of the plate [9, this water
runs down and drips from the bottom of the
water vapor in the products of combustion of the
. 'oxy-hydroca-rbon fuel gas ?ames so that water
vapor in the products of combustion condenses
on the plate and burner and .maintains the front
of the plate and the burner wet.
5. Burner apparatus including a tip‘ with a
face through which a jet ori?ce ‘opens, a plate
plate, carrying with itmaterial that has dissolved
in or mixed with it on the front of, the plate.
‘There are dents‘in the plateil9 forming 're
cesses in the back‘ of the plate and protuberances
in the-frontof‘the plate.‘ v‘The tip. elements 14)
extend into the recesses, and the protuberances
around the openings 2| "are a precaution against
25
the passage of the waterv into the. openings 2!.
The'reare large amounts of water vapor in the
products of combustion of hydrogen, but-in the
caseof certain other fuel games it is necessary
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to supply water from some other’source. ‘
30
' , Fig. 4 shows a pipe ‘26 at the top of theplate
of the plate I9 ‘from the pipe ‘26 and cause, a
sheet of'water to cover‘ the‘front face of the
plate and run down the plate. ‘If 'suf?cientwa- '
ter is supplied from the spray pipe 26, the cool
ing tube 23 can be dispensed with; There is an
advantage in limiting the amount of water that
flows down the front of the plate l9, however,
because an excessive quantity of water will cause 40
some of the water to get into the :gas streams‘
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Changes and modi?cations can be made in the
illustrated embodiments of .the invention, and >
some features of the, invention can ‘be used with
out others’.
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I claim:
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spray pipe in position to spray water’on the face
of the plate that confronts the work piece.
- '7. Burner apparatus including a tip having a
block portion, a plurality of tip elements'pro
jecting from the block portion, a metal plate cov
ering the ends ofthe tip elements and having
dents therein that form recesses into which the
ends of thetip'elements extend, said dents form
ing protuberances on the side of the plate away’ ‘
from the .tips, and said plate having perfora
tip, and a tortuous tube silver-solderedr'to the
_ face of the plate nearest the tip elements for,
' cooling said plate to a temperature low enough
‘ method comprises interposing a perforated plate 50 to cause condensation of water vapor on the side
between the burner and the workpiece, and con
of the plate ‘away from the tip elements. .
‘ tinualiy producing a sheet of liquid’ on the side
8.. In the above-water heating of a work piece
; of the plate confronting the work piece.
by means of a burner that directs one or more
,2. The method of protecting an oxy-hydrocar
" bon fuel gas burner from becoming obstructed ‘
j ’by the deposit of foreign particles, comprising ,
\ cooling a surface immediately surrounding the gas
gas jets against the work piece,,the method of
preventing the accumulation of ‘deposits of for
eign matter on the face of the burner which com
prises continually producing between the burner
‘ jet or jets that issue from the burner ‘itself to
and the work piece a sheet of liquid having open
a temperature substantially less than the boiling
ings through Which the gas jets may be projected
; point ofjwater so that water vapor in the prod~ 60 toward the work piece, and projecting the gas
ucts of combustion condense on said surfaces >
" and keep the surfaces ‘wet while the burner is in l
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operation.
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jets toward the work piece through said openings
in the sheet ‘of liquid.
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- 3. In glass working by means of a gas ‘burner
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45 tions in register ‘with the jet ori?ces, members
. connecting the plate to the block portion or‘ the
1. The method vof preventing spatter from a 7
work piece from accumulating on a burner, which
or into said perforation.
6.,The combination with a burner ‘having an
ori?ce for projecting a jet of gas against a ‘work
piece, of a shield in front of the burner andwith
a perforation in register with said ori?ce, and a
l9. Jets of water '21 are sprayed against the front
and be projected against the work.
covering the‘ face and spaced‘ from. said face, a
perforation in the plate in register with the jet
ori?ce, means adjacent the plate for causing wa-‘
ter to cover the side .of the plate away, from the
tip, and a protuberance on the'side of the plate
away from the tip and surrounding theperfora
tion‘ for- preventing water from ?owing across
JAMES L. ANDERSON.
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