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Патент USA US2131986

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Oct. 4, 1938.
2,131,986
(1. M. STROUD ‘
BLUE FLAME OIL BURNER
Filed Dec. 18, 1955
M1
Mn?
17
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'
"
Z5’
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Patented Oct. 4, 1938
2,131,981;
‘2,131,986
‘~BI5UEFLAME O-IL BURNER
“Charles'M. Stroud, Minneapolis, "Minn.
‘Application-December 18,;‘11935, Serial No. ‘55,018
'
I
"'6 claims, (01. "'158-8'6)
' This invention relates to a‘ liquid ‘ fuel v:burn'er
'andzparticularly toian oil ‘burner oifthe'blue'?ame
type-
'
‘
'
‘Such aburners ilof ‘ the “blue {?ame ‘type usually
5 comprise a tmem'ber‘having recesses with wicks
‘therein 'to which ‘Foil-is supplied and perforated
lcyli-nders extending above said member ‘forming
-.'annular ipassages communicating with said ‘re
cesses 'throughwhich oil vapor'passes upwardly.
1150 In Istarting such burners the same have hereto
-fore1burned with a-‘high red‘v flame until‘the burner
Ibe'c'ame ‘heated to a certain degree ‘when a blue
?ame wouldberproduced. '
21.55
~
'It ‘ has “heretofore been v"the ‘practice ‘to’ have ' ‘a
passageifof? rather large extent for vapor rcon'stan-t
1y supplied with oillorivap'ori-and‘burning to con
stitute a pilot.
’
"
4
It is anobject 'of'this invention to provide a
‘simple and "efficient construction of‘blue flame
burner in which'the'initia‘l ‘burning ‘with a red
flame‘ is eliminated and in which' a1 blue ?ame ‘can
always be'F'hacl.
I
"
a
'
'
‘Itlis 1a 'further object of the vinvention‘to ‘provide
a novel :and efficient means comprising a pas
25 sage ‘of small cross sectional ‘area-for oil vapor,
which vapor mixed .withair can burn at'the top
vof said passage to form? a‘pilo't. F ‘
IIt-is anothert'object of the invention to provide
30
(‘a 'Eburn'er’ having ‘a burner ~meIriberf-with voil "re
cei-ving recesses ‘therein and a Vaporizing'chamber
extendin'g'below said ‘recesses, ajplurali'ty ‘of su
perposeddis'ks of ?brous material'lbeing disposed
in-isaid chamber, which disksarepreferably pro
vided with holes arranged ‘in ‘staggered ‘relation
iniadjacent disks.
I
V
'
'It'is still another-object ofjthe invention-to pro
vide a ‘burner’ having a ‘novel form 'o‘fiba?‘le means
at ‘ithe'top of~the perforated orV-screen'cylinders
used together with novel'means for supporting
such'ba?le.
4
.
as:indicated’ibyfthev arrow. '
Referring to ;the :drawinga ‘burner structure é‘
:is ' shown :comprisingza member ‘ 1'0 .havingia plate‘
:Iike :bottom ithronghoutqnost of its extent from
which project ‘equally, and circumferentially
spacedand iapertured lugs’ tea adaptedito "receive
bolts to secure said 11member iniiplace. Member
H] hasiformed‘athereinuaupair of annular grooves
Hi‘bsan’d ‘ l llc'which- .e'xtendradjacent vits outer‘ edge
infra'diallyspaced‘relation. The Walls extending
about igrooves .lllbwand 'lllcuare reduced in'thick
.ness and have forme'd'thereonshoulders' l M some -
distance fromi'their upper-ends. flCylindrical per
forated cylinders orrscreens H, 12; I3 and‘ I 4 sur
round saidreduced portions respectively and rest
at theirlower ends on v:the'shoulders ltd. Cylin
ders ‘II .1130 : [4' extend vertically quite a distance 20
above‘zmem‘berit?. :Wicks ~15 will ‘be disposed in
.tl'Ie:groovesIliilbvandf l 00 andsaid grooves are con
nected Lbypa'ssag-es t?'e extending ‘through arms
HIT whichi‘ijoin'itheradijacent Walls ‘of said grooves.
1Member:lfl'rhas tfo'rm‘edatéits central portion a
cylindrical teasing ‘I?giwhichvextends downward‘
.quite'ia distance from the i?at ‘bottom portion of
member“). :Casin'g lz?g has a chamber therein
‘andithis communicates-through passages 10h with
grooye'i-lzitc, passages lzllhibeinglfformed'in arms
i?z' which extend betweenv the. inner wall of groove 30
'IiSc-a'n‘d vteasing 1.0g. :A cylindrical member l6
shown in Figsj?rande is disposed-i'nithe “chamber
in :casing 40!]. .Member #6 isopen 1at'its upper
endraiid its-bottom and 'side walls have thereina
multiplicitypfzism'allflholes [6a. "The bottom of
member l6..is ‘spaced a?shortdistanoe from the
bottom of the chamberin'casingilsdg. andsai'd cas
ing :‘has at its lower :end :a threaded boss I07‘
adaptedtorrecei-Ve. a'fuel supply pipefor supplying
'
‘These and other objects and- advantages of the
.oil: to casing "1:09"; The memberil?shas ‘disposed
invention ‘will be ‘fully set‘ forth ' in ' the ‘following
description 'made in connectionwith the accom
thereinitquiteta number of disks 11. ‘.One of these
:diskslis showntini'Figs. Band Band it will be seen
panying drawing, in which'like reference charac
ters refer to similar partsthroughout .the .several
thatithezsame‘lhas exten'dingitherethrough a pill
views and in which: '
rality -;of ‘equally "and circumierentially spaced :7
holes 11111. When the disks 1.1 .:are‘ arranged in
Fig. .1 is. a .vertical section taken. substantially
member l6 as shownri-n' Fig. '1 the holes ‘ Ha. will
on line,|—.| of.Fig...'2 .asindicatedby the arrows;
.Eig. 2_is.a top .plan viewrof the burner withgthe
be arranged fi-n'staggered' relation. :A cap cmember
gli?ihas an" exteriorlyithreaded ?ange screwed into
ba?ie means removed;
Fig. 3.is a view inside elevation-of the member
used in “the vaporizing chamber;
7
Fig. .4 is a toprplanview of the-member shown
55
Fig. 5':.-is:a-:pla'n yiew'of 'oneiof the disks used;
‘and
Fig. Gris a section .taken" on'lin'e 26é—6 .of Fig.5
in Fig. 3;
:
.
-
thert'opof‘casing l?ylsothatrmemberw forms a
coverforrsa‘id casing.‘ .A rod-lz9 extends upwardly
‘fromzazcentralrbosstton member: l§8,"the same hav
ing its:lower‘end'threa'dedI-intotsaid boss and a
vbaffle:member.2 ll- »hasia. central :depending 'boss 20a
with aiibore thereindnto‘which rodi»l‘=9 extends so
2
l
2,131,986
"
that ba?le 20 rests on said rod. Ba?le 20 has a
depending cylindrical‘?ange 20b which extends
to a point‘ slightly below the top of cylinders II
to M. Ba?le 20 has another cylindrical ?ange
200 which extends downwardly quite a distance
below the top of cylinders |2 and I3 and substan
tially midway between the same. Baffle 20 has
an inwardly and upwardly curved ?ange 20d at
its central portion and a plurality of openings
10' 2012 are formed between this ?ange and ?ange
2017, the space between said ?anges 'beingalmost
entirely open and only traversed by narrow ribs
sages between cylinders H and I2 and cylinders
l3 and l4. It will be seen that the passages 25
between cylinders II and I2 and cylinders l3 and
I4 thus form vapor passages while the passage 26
between cylinders l2 and I3 forms an air passage,
this passage being open at the bottom of mem
ber ID except where it is closed by arms “If.
The vapor passing upwardly in passages 25 is
mixed with air which enters through the holes
in the cylinders II to M and this mixture passes 10
laterally from said passages through the outlets
at the top of cylinders I2 and I3 and between'
20f. Bailie 20 also has an upwardly and outwardly .. the same and the ends of ba?les 2| and 22. The.
extending outer ?ange 20g. Flanges 20d and 20g
15 extend oppositely in symmetrical relation to de
pending ?ange 20c. The Outer cylinder II also
has an upwardly and inwardly extending baf?e
member 2| supported on its upper end. This baffle
member is of annular form extending entirely
20 around cylinder H. A similar baffle 22 is sup
ported on the upper end of inner cylinder |4,- this
ba?le extending upwardly and outwardly toward
ba?le 200. As shown in Fig. 1 baiiles 20:1, 200, 2|
and 22 are of curved formation. ‘.Ba?le 2| has up
25
standing therefrom supporting lugs 2|a having
V-shaped recesses in their upper ends and baffle
member 2|] has circumferentially spaced legs 20h
having V-shaped lower ends adapted to rest on
the upper ends of lugs 2|a. Baffle 20 is thus ad
30
ditionally supported on ba?le2|..
'
_
Member ID also has depending from one side a
comparatively small cylindrical casing |||7c inte
riorly threaded at its lower end to receive'a fuel
supply pipe indicated as. 23.
A hole . Him is
35 formed in the bottom of groove 101) which extends
into the chamber in casing |0k. A pair of plate
like lugs Hm extend upwardly from the bottom
of groove. IDb at each side of hole Him and be
tween the walls vof groove Hib, said lugs ex
tending to a line adjacent the top of said groove.
A pair of perforated plates or screen members 24
are secured between screens H and |2 and extend
to the bottom of said screen members just over
.or adjacent the lugs I011, Members '24 have lat
e erally extending lugs 24a. which-can be secured
to the side of screen member 12 vin any suitable
manner as by welding.‘ Lugs Mn and screen
vmembers 24 are spaced 'a-comparatively short
distance circumferentially so that a- passage of
comparatively small area extends upward be
tweenscreens II and I2. ,
i
.
In operation oil will be supplied through pipe
23 in su?icient' quantity to maintain oil in groove
|0b between the lugs um which act as dams to
con?ne a small reservoir of'oil between them in
groove lllb. This oil will saturate the portion of
wick | 2 in said groove between lugs “in and vapor
will pass upwardly between rings H and I2 in
the passage between members 24. This vapor
60 will mix with air and the ?ame formed by the
combustion of this vapor and air will burn at the
top of said passageor at the top of rings II and
I2. This ?ame will be a blue ?ame and will act
as a pilot light for the burner.
When the burner
65 is to be used for heating, oil will be supplied to
the bottom of casing ||ig and will pass through
the holes in the bottom of member IE to the disks
|'|. Some oil will also pass around the outer side
of member l6 and through the holes in the side
70 wall. thereof to the disks |‘|, member .16 ‘?tting
rather loosely in casing ||lg.' The oil passes'up
through the disks l1 and through the staggered
holes I16! and ?ows out through passages “lb and
We to the grooves “lb and |0c saturating the
7.5 wicks l5. Vapor will pass upwardly in the pas
mixture then passes through a vertical outlet or '
‘passage at either side of baflle 200, which passages 15
are formed between said ba?le 20c and the upper
ends 'of ba?les 2| and 22. The mixture then
passes upwardly at either side of baf?e 20c and
part of the same is directed inwardly to pass
through openings 2lle as indicated by the arrows 20
in ‘Fig. 1, while a similar portion passes out
wardly between the top of baf?e 2| and baffle 20g
as indicated by the arrows in Fig. 1. The mix
ture is ignited at the top of baffles 2|. and 22 and
will burn here with a blue ?ame at all times. 25
The area of the outlet openings between the top
of cylinders l2 and I3 and the inner ‘ends of ,
bai?e's 2| and 22 is substantially equal in area ‘
to the area of thepassages between the inner
ends; of the baffles 2| and 22 and ?ange 200. 30
There is thus no choking of the ?ow of the mix
ture nor. any constriction of the passage. . This
results in the burner burning with a blue ?ame
even when it is ‘initially started. As above stated
burners heretofore have usually burned for a time 35
with a highred or yellow ?ame.
.
»
From the above descripion it is ,seen that ap
plicant has provided a very'simple and efficient
structure ofblue ?ame burner. By having the
40
narrow passage or chimney effect between mem
bers 24 and screns ‘H and I2, a pilot can be had
which is clean and not smoky and which will
burn with a ‘blue ?ame. The ?ow of the com
bustible mixture is e?icientlycontrolled to se
cure a blue ?ame on the burner at all times. .
Baffle member 20 is supported so that it can be
easily and quickly, removed. The action of the
disks |‘|. has been found in practice to be ex
ceedingly ef?cient. The oil engaging these disks
is, afterthe burner gets into operation, vaporized 50
in member I6 so that there will be no. carbon ~
deposits in member H1 or about the wicks l5. . Oil
initially is supplied ‘to the wicks l5. As the
burner begins operating and member l0 becomes
heated, the oil in grooves H112 and lllc is vapor 55
ized and as stated no oil passes from casing l?g
into the grooves. The oil is vaporized in pass
ing through the disks |‘| so that only vaporized
oil passes out through the passages Inn. This
results in a great saving of the wicks which do 60
not become encrusted with carbon at their tops.
Cap l8 can be'removed when desired if the disks
l‘! are to be replaced. The burner is simple in
construction and the same has been amply dem
onstrated in actual practice and found to be
very successful and e?icient.
'
’
’
v
‘ '
,It will, of course, be understood that various
'changes'maybe 'made in the form, details, ar
rangement and'proportion's of the ‘parts, without
departing from the scopeof applicant's inven 70
tion, which generally stated, consists in a device '
capable ‘of carrying out the objects above set
forth in the parts and combinations of parts dis;
closed and de?ned in the appended claims.
What is claimed is:
2,131,986
1. An oil burner of the blue ?ame type having
in combination, a burner member having spaced
annular grooves therein, means for supplying oil
to said grooves, pairs of perforated cylinders ex
tending upward from said member, the spaces
between the cylinders of each pair forming vapor
passages communicating with said grooves at
their lower ends, the space between the adjacent
cylinders of said pairs forming an air passage,
ba?les at the top of said cylinders forming lateral
outlets for said vapor passages respectively and
baffle means cooperating with said ba?ies to form
vertical and lateral outlet passages above said
lateral outlets, said last mentioned ba?ie means
15 having a depending portion extending into said
air passage to divide the same to cause air to pass
into said vertical passages in substantially equal
Volume. '
2. An oil burner of the blue ?ame type having
20 in combination, a burner member having spaced
annular grooves therein, means for supplying oil
to said grooves, pairs of perforated cylinders ex
tending upward from said member, the spaces be
tween the cylinders of each pair forming vapor
25 passages communicating with said grooves at
their lower ends, the space between the adjacent
cylinders of said pairs forming an air passage,
baffles at the top of said cylinders forming lateral
outlets for said vapor passages ‘respectively and
30 ba?le means cooperating with said baffles to form
vertical and lateral outlet passages above said
lateral outlets, said last mentioned baii‘le means
having a depending portion extending into said
air passage forming a vertical outlet between the
35 same and said ?rst mentioned ba?les andhaving a
top portion directing the vapor and air in oppo
site directions at each side of said depending por
tion.
3. An oil burner of the blue ?ame type having
40 in combination, a burner member with a plurality
of recesses therein, wicks in said recesses, burner
rings above said recesses, said member having a
vaporizing chamber extending below and com
municating with said recesses, a plurality of su
45 perposed ?berdisks disposed in said chamber each
having a plurality of holes therethrough ar
ranged in staggered relation in adjacent disks and
means for supplying oil to the bottom of said
chamber.
50
.
4. An oil burner of the blue ?ame type having
in combination, a burner member having a pair
of radially spaced annular oil receiving grooves,
two pairs of perforated cylinders extending up
wardly from the walls of said grooves, the spaces
3
between the cylinders of each pair forming vapor
passages and the spaces between the pairs of said
cylinders forming an air passage, baiile members
supported on the outermost and innermost cyl
inders respectively at their upper ends and ex
tending upwardly and toward each other in
curved form, a battle member extending over all
of said passages and having a cylindrical ?ange
extending downwardly into said air passage to a
point some distance below the top of said cyl 10
inders whereby the air and vapor in said vapor
passages can pass laterally between the top of
the two inner cylinders and the top of said ?rst
mentioned ba?‘les and then upwardly between said
?rst mentioned baffles and said flange and out 15
wardly beneath said second ba?ie.
5. An oil burner of the blue ?ame type having
in combination, a burner member with a plurality
of annular grooves therein, wicks in said grooves,
perforated cylinders extending above said 20.
grooves, said member having a cylindrical vapor
izing chamber extending below and in communi
cation with said grooves, a screen extending
about the wall of said chamber, a plurality of
superposed ?brous disks ?tting in said screen each 25
having a plurality of holes therethrough ar
ranged in staggered relation in adjacent disks
and means for supplying oil to the bottom of said
chamber.
6. An oil burner of the blue ?ame type having 80
in combination,'a burner member having a pair of
radially spaced annular oil-receiving grooves
therein, two pairs of perforated cylinders extend
ing upwardly respectively from the walls of said
grooves, the spaces between the cylinders of each
pair forming vaporizing passages and the space
between the pairs of said cylinders forming an air
passage, annular ba?le members supported on the
top of the outermost and innermost cylinders
respectively and curved upwardly and toward 40
each other with a space therebetween, a ba?ie
member extending over all of said passages and
having a trough-shaped annular top portion with
an annular vertical ?ange depending therefrom
midway between the edges of said ?rst mentioned 45
ba?le members and extending downwardly into
said air passage centrally thereof whereby the air
and vapor in said vapor passages can pass lat
erally over the tops of the innermost cylinders up
wardly between the edges of said ?rst mentioned 50
ba?ie members and then outwardly and upwardly
along the under side of said trough-shaped por
tion.
CHARLES M. STROUD.
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