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Патент USA US2107575

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Feb. s, 1938.
B. |..._ MATTHEWS Er Al.
Filed Dec. 28, 19'34
Patented Feb'. 8, 1938v
Birchard L. Matthews, Lakewood, and .lohn T.
Marvin, Fairview Village, Ohio, assignors to
The Patrol Valve Company, Cleveland, Ohio,
a corporation of Ohio
Application December 28,1934, Serial No. 759,454
2 Claims.
It is an object of this invention to provide a
(c1. 15s-1146>
It will be seen that a secondary air
fluid fuel burner having vtwo principal parts that
passage is provided through cylindrical portion 22.
determine the size of the burner opening, and
which size is fixed by two planar surfaces, one
Pressed >or otherwise secured to the cylindrical
portion of cap I8 is a ringlike member 24. In
member 24 and portion 2| is provided a series of
outlet ports 25. Ports 25 give an inner flame for
on each part.
The'burner is designed to be of the ribbon
flame type, wherein the flame comprises a con . the burner to cooperate with the ribbonlike flame
tinuous band around the periphery of the burner. supported between surfaces 2l) and I5 to increase
A further object is to provide a burner of this the efficiency of the burner. The use of ring 24
l0 type wherein means is provided to elongate cer
provides an elongated slot at 25 that reduces the
tain ports to prevent flash-back.
possibilities of the back flash of the ñame into the
A further object consists in lthe manner of bowl and mixing tube.
manufacturing the burner, such as set out in the
f In the construction of this burner the bowl I0
accompanying specification, and wherein two im
is manufactured and with a single grinding or
15 portant steps consist in providing two principal
' parts for the burner, forming a single reference
surface on each, and using said reference surfaces
as means for determining the dimensions of the
In the drawing:
Fig. l is a section on the line I-I of Fig. 2.
Fig. 2 is a‘vertical section showing one form of
Fig. 3 is a vertical section showing a second>
25 form of burner.
Fig. 4 is a sectional view showing a third form
of burner.
Referring to the type shown in Figs. 1 and 2,
theburner comprises a bowl I0 attached to a mix
other `machine operation, the surface I5 is made
smooth and planar. Cap member I8 may be
made by a stamping. In its manufacture the
surface 20 is made smooth and planar. Thus in
the construction of the burner there are only two
surfaces producable by only two operations with
a single machine adjustment for each; and these
two surfaces absolutely fix, with the use of spacer
member I6, the size of the outer burner slot and
also provide the slot itself. It will be seen that
the slot is continuous and the pointed fingers I1
are so spaced and dimensioned that the outer
flame issued between surfaces 20 and I5 will be
a continuous ribbon around the burner.
this reason that fingers I'I are pointed.
It isl for v
30 ing tube I I, that may extend out and be controlled
In assembly of the burner after the manufac
ture of cap I8, ring 24 may be pressed in place. It
admit primary air. The bowl has a central up
is desirable, although not essential, that the ring
standing cylindrical portion I2, and an outer wall ‘ be pressed on the outer surface of cylindrical porI3 terminating in a flange I4, the upper surface of tion 2| since thereby it is enclosed within the
35 which, as at I5, is'machined to be perfectly fiat. burner bowl, and under no circumstances is sub 35
Resting upon surface I5 is a spacing device I6 ject to dislocation, should such be possible after ,
n having spaced prongs thereof extending radially a pressed ñt. Furthermore, the burner has better
outwardly therefrom. It is these prongs, here appearance with this element concealed. ~
With ring member 24 on cap I8, spacer ring I6
shown as three in number, that engage the upperl
40 surface I5 of flange I4, the ring portion being is dropped into position with the fingers I'l resting
spaced back from this flange. Resting upon the ' on surface I5. Cap member I8 is then put into
fingers I1 is a cap member I8 having a flange I9, position with cylindrical portion 22 extending
' by a gas cock or any such valve and a shutter to
_ the under surface o_f which at 20 is manufactured
to be smooth and planar. _ Thus the spacing of
surface 20 from surface I5 is Agoverned entirely by
the thickness of fingers I1 of'spacer member I6.
Capv member` I8 has. a depression centrally
therein which provides substantially vertical walls
2|. The depression terminatesin' _a vertical cy
50 lindrical -portion 22 adapted to ñt within cylin
drical. portion I2 of the burner bowl. This fit is
preferably close", and centralizes the cap in the
bowl to hold the parts in proper relation. Por
tion 22 terminates in a threaded end over which
55 is engaged a locking nut 23 that holds the burner
through cylindrical portion I2 of burner bowl
I Ilfand the locking nut 23 is fastened. It will
be observed that the spacing of the outer burner
slot is entirely unaffected by the degree of tight
ness of lock` nut `23.
The burner of Fig. 3 is similar to that of Fig. 2.
In this burner, however, lugs or bosses 30 extend
inwardly from wall I3, and there should be aty
least'three of these.
At lthe time of the surfacing of surface I5, the
upper ends of. lugs 30 are simultaneously made
coplanar with surface I5, this being done in a
single operation. Cap member Il is pressed or
2 Y
otherwise formed to have a lower surface 3l
spaced from surface 20 by exactly the desired '
dimensions of burner slot 32.
The surface 3l
~f may be provided in the same »stamping operation
by which a cap'member I8 is manufactured.
Thus in the assembly of this burner the spacer
ring- I6 is eliminated. Other than these noted
differences the burner is identical with` the
Having described the burners,-‘ what isrclalmed
1. A burner comprising a bowlY member having
an annular planar upper surface of substantial
width and a. centrally located hollow tubular
portion, a cap member having a planar surface of ,
substantial width cooperating with said bowl
planar surface to provide a substantially hori
zontal annular burner slot, said cap having a ver
tical cylindrically recessed central portion ex~
save that at the time of stamping the cap mem- " tending into said bowl to provide an annular pas
ber I8, depressions 40 are pressed or otherwise sageway in communication with the burner slot
formed in flangeV member 4I, these depressions 40Y and a cylindrically hollow tubular portion-tele
extending outwardly from the under surface 20 scopically fitting said bowl tubular portion, and
by a predetermined distance, which distance is radiallyV extending spacing means between said 15
the deciding spacing for slot 42. It will be seen planar surfaces, said -rneans having their outer
that this burner requires only two machining extremities positioned a substantial distance in
operations to determine the width of the slot
wa?dly of the outer edges of said surfaces and
tapered to a sharp point in the direction of flow
It will be observed that in all of these burners to permit the free flow of' fuel in a continuous 20
the manufacture of the burner bowl necessitates ring adjacent the outer edges of said planar sur
a singleioperation that requires ñxed dimension'
faces to provide a continuous flame at the burner
ing. The burner bowl may be a single casting slot.
with the mixing tube as shown, thus materially
2. A burner comprising a bowl member having' '
25 simplifying this structuré. After the bowl is
a planar upper surface of substantial width,`a
cast it may be held against a grinding wheel or cap member having a planar lower surface also
the like and the surface l5 made smooth and of substantial width cooperating with said first
planar to fix simultaneously the slot surface and surface to provide a substantially horizontal
the reference surface thereof. Where the manu- ` burner slot, and radially extending spacing means
30 facture of the bowl, as frequently may occur, is
betwee'n said planar surfaces, said spacing means
separate from the manufacture of the cap mem
engaging only the inner portions of said two
ber, it is readily seen- how the number of machin
planar surfaces and having their outer extremi
ing operations and the possibility of divergence ties positioned a substantial distance inwardly of
burner in Fig. 2.’
10 "I‘he burner of Fig. 4 is similar to that of 1<"‘ig.«_2,v
from a given dimensipning, involve’ very impor
The manufacture of the cap
member I8' may carry all of the variable dimen
sions involved in the manufacture of the burner.
spacing means having their outer extremities
These variables include> differences in size of the
burner slot opening such as are occasioned by the
ring adjacent the outer edges of said surfaces to`
>provide a continuous flame at the burner slot.) à'
35 tantv questions.
40 use of different kinds of gas.
tapered to a sharp point Ain the direction of ñow_
to permit the free iìow of fuel in a continuous
In all types ofthe burners shown, the cap
’ members may have all of their fixed dimensions
provided ina single Íoperation, preferably in a
stampingVY or die-casting machine.
the outer edgesof such .'planar surfaces, and said
BmcHARD r.. MA'I'rrmws.
JOHN T. MAavnv.
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