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Патент USA US3018833

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Jan. 30, 1962
J. T. ALGER
3,018,823
FLAME SHAPERS
Filed April 28, 1958
70
V
INVENTOR.
Jerry 7T ?lgar
BY
W.M “Z4
United States
tine
3,?i8,823
Patented Jan. 30, 1962
1
2
3,018,823
portion 82 into a venturi portion 88 of the burner tube.
It will be seen that the venturi portion 88 ?ares into a ter
minal portion 96 having an open upper end forming a
FLAME SHAPERS
Jerry T. Alger, Chicago, 111., assignor, by mesne assign
ments, to Con?gured Tube Products Co., St. Louis,
Mo., a corporation of Missouri
Filed Apr. 26, 1958, Ser. No. 731,176
4 Claims. (Cl. 158--113)
large single discharge port 92. An inturned ?ange 94 is
formed around the port 92.
The ?ame shaper 62 of FIGS. l~6 has an upper hood
or de?ector d6. In addition, the illustrated shaper 6-2 has
a lower de?ector 98, mounted below the hood 96 and on
This invention relates to burners for gas or vapor fuels,
the opposite side of the burner tube 86 therefrom. The
and pertains particularly to ?ame shapers for use with 10 illustrated upper de?ector or hood 96 may be regarded
such burners.
as being in the form of an angle member, having generally
One object of the present invention is to provide new
vertical and horizontal ?ange portions 100 and 162. A
and improved ?ame shapers adapted to produce a broad,
curved bend 164 is formed between the ?anges 1% and
somewhat ?at, laterally directed ?ame from a single
162. It will be seen that the bend N4 is interrupted by
15 a curved, inclined de?ecting wall portion 166 which over
burner tube of the single port type.
A further object is to provide ?ame shapers which pro
lies much of the discharge port 92. In this case, the
duce a steady, quiet ?ame, protected from being blown
curvature of the de?ecting wall 11.66 is generally cylindrical
out or agitated by secondary air.
in character. The curved de?ecting wall 166 divides the
Another object is to provide ?ame shapers which are
generally vertical ?ange 196 into a pair of wings 163
extremely effective, yet are easy to manufacture and low 20 which extend to the left and to the right from the curved
in cost.
wall 166, as shown to best advantage in FIG. 4.
Further objects and advantages of the present invention
The lower end portion of the generally vertical ?ange
will appear ‘from the following description, taken with
1% is formed into a cylindrically curved mounting stub
the accompanying drawings in which:
I16 adapted to be Welded or otherwise secured to the ter
FIG. 1 is an elevational sectional view showing a water 25 minal portion 90 of the burner tube 86. The welds may
heater or the like equipped with a burner having a ?ame
be at the lower margin of the stub no as indicated at
shaper constituting an embodiment of the present inven
112.
tion.
The generally horizontal ?ange 162 is substantially ?at,
FIG. 2 shows the burner of FIG. 1 as applied to a dif
but is formed with a downturned, inclined marginal lip
30 1114. In the plan View of FIG. 5, the lip 114 is generally
ferent type of water heater.
FIGS. 3 and 4 are side and front elevational views, re
in the form of a segment of a circle. The ?ange 162 is
spectively, of the burner and ?ame shaper of FIGS. 1
approximately crescent shaped, with the curved lip I14
and 2.
extending along the outer edge thereof. The curved de
FIG. 5 is a top view of the upper hood or de?ector em
?ecting wall 106 intersects with the ?ange 10-2 to form a
35 curved inner edge or fold 118. The lip 114 is spaced
bodied in the ‘?ame shaper of FIGS. 3 and 4.
FIG. 6 is a top view of the lower de?ector embodied
horizontally from the edge 118.
in the ?ame shaper of FIGS. 3 and 4, the View being taken
generally ‘as indicated by the line 6—6 in FIG. 3.
The illustrated lower de?ector 98 corresponds gen
erally in shape to a portion of a cylinder, as clearly shown
It will be seen that FIGS. 1-6 illustrate a burner 66
in FIGS. 3 and 6. The lower de?ector 98 is electrically
having a ?ame shaper 62. In FIG. 1, the burner 66 is 40 welded or otherwise secured to the terminal portion 96
shown as applied to a water heater 64 having a ?ue or
on the burner tube, and is mounted around the left-hand
stack 66 which is positioned ofhcenter near the left-hand
side portion thereof, in opposed relation to the mounting
side portion of the heater. The ?ue 66 extends upwardly
stub 11%, as shown in FIG. 3. Thus electric welds 119
through a dome-shaped lower wall 68 which is provided
are indicated in FIG. 4. The lower de?ector 98 extends
on the water heater 64. The burner 60 is positioned in a 45 upwardly beyond the terminal portion 90. The upper
compartment 701 below the wall 68 and is disposed offend of the de?ector 98 is formed with a ?ared, inclined
center, toward the right-hand side portion of the heater.
lip or ?ange 129 which is generally parallel to the curved
The ?ame shaper 62 directs the ?ame from the burner
de?ecting wall 166 and is spaced rather closely thereto.
66 to the left so that the hot gaseous products of com
Thus, both the de?ecting wall 106 and the lip 120 slant
50
bustion will heat the bottom wall 68 and then will pass
upwardly from right to left as shown in FIG. 3. A nar
up the ?ue 66. The ?ame shaper 62 also spreads out the
row slot or exit ori?ce 122 is thereby provided between
?ame in a direction perpendicular to the section plane of
the de?ecting wall 166 and the lip 120.
FIG. 1 so that the heat from the flame is spread over a
In the illustrated construction, the de?ector 98 has a
large area of the bottom wall 68. In FIG. 1, the ?ame
lower portion 124 which serves merely as a support for
55 the burner 66. Suitable mounting bracket or ?ange por
from the burner 66 is indicated generally at ‘72.
FIG. 2 shows an application of the burner 66 to a some
tions ‘126 and 128 may be formed on the lower portion
what ditferent type of water heater 74, having a ?ue 76
124.
which is centrally positioned. As before, the heater 74
In the operation of the burner 69, the gas or other fuel
has a dome-shaped lower wall 78. The burner 60 is posi
is mixed with the primary air in the burner tube 36 and
60
tioned near the center portion of the heater 74 so that the
is discharged upwardly through the port 92. The mixture
?ame 72 will heat a considerable area of the lower wall
is de?ected by the curved ‘wall 166 and is spread laterally
78 around the ?ue 76. The hot products of combustion
to the left and to the right, as indicated by the ?ame pat
will then pass up the ?ue 76 and will heat the water
tern 72, as in FIG. 4, as well as being de?ected under
around the ?ue.
The details of the burner 60 and the ?ame shaper 62 are 65 the ?ange Til-2.
The lower de?ector 98 is shaped to follow and contain
illustrated to best advantage in FIGS. 3~6. It will be
the normal ?ow of the gas-air mixture issuing from the
seen that the burner 66 comprises a straight burner tube
port 92 and shaped by the upper spreader 96. The lip 120
80 having an entrance portion 82. which receives gas or
on the lower de?ector de?ects the flow of high-velocity
other suitable fuel from an axial jet 84. Primary air is
drawn into the entrance portion 82 through lateral ports 70 secondary air away from the ?ame, and thereby prevents
such secondary air from lifting or tearing the ?ame. In
86. The gas and primary air pass from the entrance
3,018,828
3
‘mixture therefrom laterally under said second angle
?ange, and an inner cylindrically curved de?ector se
of the burner.
cured to said burner tube in opposed relation to said ?rst
The mixture escapes through the narrow slot 122 be
angle ?ange and extending outwardly from the end of
tween the de?ecting wall 106 and the lip 120 and thus is
said burner tube toward said second angle ?ange, the
spread into a thin ?at ?ame which extends generally in a
concave side of said inner cylindrically curved de?ector
horizontal direction from the margin of the ?ame 1%2, as
being directed toward said outer ?ame de?ector, said
shown in FIGS. 1 and 2. The ?ange 102 guides or di
inner de?ector having an inclined outer margin opposite
rects the mixture outwardly, while the downturned mar
said curved de?ecting wall portion to form an exit slot
ginal lip 114 turns the mixture downwardly so that the
?ame will extend outwardly for a considerable distance 10 therebetween for the discharge of the fuel mixture, said
second angle ?ange having a curved marginal portion
from the ?ange 102 before being turned upwardly by sec
thereon turned toward said port at an inclined angle for
ondary ‘air. The wings 108 protect the base of the
‘de?ecting the fuel mixture downwardly, said inner de
?ame from. secondary air coming from the rear of the
?ector having a ?ared lip along its inclined upper margin
?ame shaper 62.
Another function of the de?ectors 96 and 98 is to in 15 for protecting the base of the ?ame from high-velocity
this way, the lip 120 prevents noisy, unstable operation
crease to a considerable extent the effective port depth of
the burner, so as to stabilize the ?ame and largely pre
vent the ?ame from ?ashing back into the burner tube.
secondary air.
3. In a burner, the combination comprising a burner
tube having an axial discharge port therein, an outer
?ame de?ector comprising a generally L-shaped angle
‘It will be apparent that the ?ame shaper provides a
?at, broad, generally horizontal ?ame which is adapted 20 member having ?rst and second angle ?anges with a bend
to spread over a wide area of a water heater or the like,
therebetween, said ?rst angle ?ange having mounting
so as to provide e?icient heat transfer between the ?ame
means thereon secured to one side portion of said burner
and the heater. The burner operates with exceptional
stability and quietness, and is virtually immune to ?ashing
back. Nevertheless, it will be recognized that the burner
and the ?ame shaper may be readily manufactured at
tube, said ?rst angle ?ange extending outwardly from the
end of said burner tube and generally parallel thereto,
said second angle ?ange extending across and generally
perpendicular to the axis of said discharge port and being
spaced outwardly therefrom, a curved inclined de?ecting
low cost.
Various other modi?cations, alternative constructions
and equivalents may be employed Without departing from
the true spirit and scope of the invention as exempli?ed
wall portion formed into said bend and into portions of
said angle ?anges, said de?ecting wall portion being dis
posed at an oblique angle in front of said discharge port
with the convex side of said de?ecting wall portion direct
claims.
ed toward said port to spread the fuel mixture therefrom
I claim:
laterally under said second angle ?ange, said curved sur
1. In a burner, the combination comprising a burner
face corresponding in shape to a side portion of a solid
tube having an axial discharge port therein, an outer ?ame 35 surface generated by revolution of a straight line, said
in the foregoing description and de?ned in the following
de?ector comprising a generally L-shaped angle member
having ?rst and second angle ?anges with an angular bend
therebetween, said ?rst angle ?ange having mounting
means thereon secured to one side portion of said burner
tube, said ?rst angle ?ange extending outwardly from the
end of said burner tube and generally parallel thereto,
said second angle ?ange extending across and generally
perpendicular to the axis of said discharge port and being
spaced outwardly therefrom, a curved inclined de?ecting
wall portion formed into said bend and into portions of
said angle ?anges, said de?ecting wall portion being dis
posed at an oblique angle in front of said discharge port
curved surface extending through an arc corresponding to
a fraction of a circle, and a channel-shaped de?ector se
cured to said burner tube in opposed relation to said ?rst
angle ?ange and extending outwardly from the end of
said burner tube toward said second angle ?ange, the
concave side of said channel-shaped de?ector being di
rected toward said outer ?ame de?ector, said second de
?ector having an inclined upper margin opposite said
curved de?ecting wall portion to form an exit slot there
between for the discharge of the fuel mixture.
4. In a burner, the combination comprising a generally
vertical burner tube having an axial discharge port in the
upper end thereof, an upper ?ame de?ector comprising a
with the convex side of said de?ecting wall portion di
rected toward said port to spread the fuel mixture there
from laterally under said second angle ?ange, and an 50 generally L-shaped angle member having ?rst and second
angle ?anges with an angular bend therebetween, said
inner cylindrically curved de?ector secured to said burner
?rst angle ?ange having a cylindrically curved mounting
vtube in opposed relation to said ?rst angle ?ange and ex
step on the lower end thereof and secured to one side por
tending outwardly from the end of said burner tube
tion of said burner tube, said ?rst angle ?ange extend
toward said second ‘angle ?ange, the concave side of said
inner cylindrically curved de?ector being directed toward 55 ing upwardly from the end of said burner tube and gen
erally parallel thereto, said second angle ?ange extending
‘said outer ?ame de?ector, said inner de?ector having an
generally in a horizontal direction across and generally
inclined upper margin opposite said curved de?ecting wall
perpendicular to the axis of said discharge port and being
portion to form an exit slot therebetween for the dis
spaced upwardly therefrom, a curved inclined de?ecting
charge of the fuel mixture.
2. In a burner, the combination comprising a burner 60 wall portion formed into said bend and into portions of
said angle ?anges, said de?ecting wall portion being dis
tube having an ‘axial discharge port therein, an outer
posed at an oblique angle above said discharge port
?ame de?ector comprising a generally L-shaped angle
with the convex side of said curved de?ecting wall por
member having ?rst and second angle ?anges with an
tion directed toward said port to spread the fuel mixture
angular bend therebetween, said ?rst angle ?ange having
mounting means thereon secured to one side portion of 65 therefrom laterally under said second angle ?ange, said
said burner tube, said ?rst angle ?ange extending out
wardly from the end of said burner tube and generally
parallel thereto, said second angle ?ange extending across
and generally perpendicular to the axis of said discharge
port and being spaced outwardly therefrom, a curved in
clined de?ecting wall portion formed into said bend and
into portions of said angle ?anges, said de?ecting wall
portion being disposed at an oblique angle in front of
said discharge port with the convex side of said de?ecting
wall portion directed toward said port to spread the fuel 75
curved surface corresponding in shape to a side portion
of a solid surface generated by revolution of a straight
line, said curved surface extending through an arc cor
responding to a fraction of a circle, and a lower cylindri
cally curved de?ector secured to said burner tube in
opposed relation to said ?rst angle ?ange and extending
upwardly from the end of said burner tube toward said
second angle ?ange, the concave side of said lower cylin
drically curved de?ector being directed toward said upper
?ame de?ector, said lower de?ector having an inclined
3,018,823
5
6
upper margin opposite and generally parallel to said
References Cited in the ?le of this patent
curved de?ecting wall portion to form an exit slot there
between for the discharge of the fuel mixture, said sec
ond angle ?ange having a curved \downturned inclined
marginal portion thereon for de?ecting the fuel mixture
downwardly, said lower de?ector having a ?ared in
clined lip along its inclined upper margin for protecting
the base of the ?ame from high-velocity secondary air.
UNITED STATES PATENTS
35 3,169
2,372,953
Shipman ____________ _- Nov. 23, 1886
Hurlbut ______________ __ Apr. 3, 1945
2,731,009
2,766,819
2,867,272
Little ______________ __ Oct. 16, 1956
Morrison _____________ __ Jan. 6, 1959
Pocrass et al. _________ __ Jan. 17, 1956
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