close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2117270

код для вставки
May 17, 1938.
F. S. BLOOM
2,117,270
APPARATUS FOR PRODUCING PROGRESSIVELY DELAYED COMBUSTION
Filed June 29, 1935
W
IIIII
ȕ L
30
.520mm
WM M4“ yW5,ê
Patented May 17, 1938
2,117,270
UNITED STATES PATENT oFFlcE
2.111,21.
APPARATUS ml, m6 m
SlmY mm œmS'IlON
rna‘anu-,rlua-ùn"
mllleztlßìsehlhm
zenn-
Thislnventlonrelatestnanewandimln'uved
method and apparatus forpmgms
sively delayed combustion,
termed
"long'ilame combustion”, in furnaces, in which
5 amaterialsuchassteelis’xequiredtnheheated.
(cnss-nn
”
wîthontuneasmlxtureofairorprematureomn
Otherandfurtherobjectswlllanpearasthe
bnsüm.
“
~
Ihnvesho'noertainpreferredemhodimmts 5
Thesefumacesmayheemtinmmsinbmm ofmyinwntiminthedn'hg.
theymayhavehealthsin'hiehthematmialto
be heated lies stationary during the heating
period. Undereitheroflmatingit
fwisdesirablethatheatdnetodfuel
should not be‘ooneentrated in one phoe, but
shouldbedìstdbutedoverlsmuchofthelmgth
ofthefurnaœas
Itiswellundersboodintheartthatalnlms
tionisbestdelayedbyavoidanœofhn'bnlmœin
thealrandgasstreamandbym'ojecüngflnl
andairfor its combustion intntheíumaœin
parallel
theprocessbeingslowerasthepenllelmdion
currents with definite lines of
offuelandairbodiesìsmomnearlypexfeet..
2°
nhasbeenfomawhmusingmmumfnr
example,thattheahsenœofisa
inwhieh-
_
Figure l is a vertical, longitudinal seetim`
thromhoneformofbumer;
Flgurezisaviewofli'lgurelasseenùanthe l.
FìgureSixaviewsimilartol'lgurelbutM-
y
ingamodiñed
'Egm'e4isavlewofthehurneroflilglme3ls
formofburner; and
seenfromtherlght.
_
15
Referring ñrst to the form ol'
showninìlgurœlandlthisformoibnmel
>`isdesignedforuseinsmallersilß,
mhasbunlelslmvingœpacitiesofäßotolm
cllllicfeetoínatunlgasperhour. Theburnerm
inchldesahousingllwhichenelosesan
airchaxnherlîtowhichisconnecbedtheair
great detriment to satisfactory heating, asmmzh
intakepipell. 'Ihetubulardischargeportlon
ant heat from the llame. It has hem found
jectsintotheairchamberllbeyondthem-ß
tl'anœfromtheairintakeplpe I3. Therear
morefuelisrequiredowingtothelaùofradi
25thatthisoondilzionisoilvintedif’tln:oukeovenor
natumlgaswhiehmayheumispa?lym?ed
Ilnfthelumsinghasanextensionliwhhhpm
endofthehousingllisclosedbyaplateli
whiehissecuredtothehousingbythebdtsl'l.
carbonparticlesareandgive, Bymeanso'fspiderllthegasinletnmzlellis
andasaresulLthe?amemdiaieshe-ttoamneh sumortedfmmtheplatelltheplateheimheld
beforeitstothefllmne. Inthism,
greaterextentthanwould‘otherwisebethecase.
inplaœbybolmìl. Thegasinletlipellb
Ihavefoundthattheofthelong secm'edtothenœzlel’. Thehoodllisthread
ilametogetherwithcnmkingoíthefnelvely edupmtheouteríaœofthegasnomlelllnd
greatlyimprovœhxrnaœoperation. Rowena-.it
35isofgreal;importancethatthe¢:r:mx:hn|;upu'a.-tionbeunderoonti'olofthemeratnrandeasily
changedfnsl?tfurnaœ
It is an object of the present invmtim to plo
isthnebyadjustabletowardorfromthecllmne
member Ii.
:5f
Theiniüalairnomzleßisthreadedintothe
clomreplnteIisothat'ìtmaybeadjustedtn-_~
mrdandfnlnthegasnozzle I9.
The inter- _
videanewand improvedlongllamehllrnerandv mediatenolzleorairoontroltubellis
40'methodofoperation.
Itisalsoanobjectofthisinvmtimtnpmvide
means and methods whereby the direction of
ñowofthefuelandairfm'itsaxe
renderedsubstantiallyparallel.
45
v_
Itisanotherohjectoftheinvmümtnpmvide
homtheinnerfaoeoftheextendedportinnlim
ofthetubularmemherllbymeansofthespider
25. ‘Theñnalairoontmltubeliissuppo?ed
hmnthetuimlarmemberllhymeansofthe
sliderl‘landis-heldinadjustedpositionb!
meansofthebdtsnñttingthromhslottedß
meansandmethodsfuralimitedand opmingsl’inthememherll. Theburneras
controlled quantity ofairinto minetwithacur
rentofgas,sothatvlthaminimnmdegreeof
turbuleneeacrackìngell’ectismoduœd.
50
Anadditionalobjectoftheinventionisto
provide means and methods to control the
amountofaix'whichcomesìntoemtadwìththe
gnsbodyinsuchawaythattheammntofeom
hustlonntoraisethetempalmgeofthe
ssglssumnientlyvforennkingpmpœœiselîected
semblyisprovidedwiththeñangeîlbymœns
ofwhinhitmaybesecuredtoaportblockllin
îhidlisfmmedthellol'tn.
'lm_,formofeonstruction showninlilgnresäio
andiisdes‘gnedespeciallyforusein
withbmnelsoflargergascapacltythantheeon
slructimshowninlügulïeslandìthis
lllrnu'mayalsohemadeinsmallersizes. The
housingllthealrchamherlltowhidlß
2
2,117,270
air is led through pipe 42. This chamber 4I
surrounds the inner tubular end 4l of the tubular
discharge portion 44 of the housing. This por
tion 43 extends beyond the inlet opening from
the pipe 42. The rear end of the housing 4l is
closed by the closure member 45 held in place
by thebolts 45. 'I‘he gas introduction tube 41
may be formed integral with the closure member
45 as shown and the rear end of the tube is
threaded to receive the discharge end of the gas
inlet pipe 48.
'I'he first air control tube 49 is supported from
the second air control tube 5Il by means of spider
52. The air control tube 5|) is supported in turn
from the housing 44 by the spider 5I. The tube
52 is supported from the outer housing member
44 by means of spider 54. The assembly is pro
vided with a ilange 55 to engage the port block
tween nozzle Il and the adjustable tube 2l. A
relatively small amount of air is entrained at this
point.v An additional amount of air is entrained
between tubes 2l and 24. 'I'his in turn surrounds
the gas air stream passing through tube 23. Like
wise, air admitted between tubes 24 and 25 again
surrounds the stream. It will be noted that the
admission of air at both latter points is controlled
and usually only suificient is admitted to give a
55 which is provided with the burner _discharge
ing adjustments. ` These types of burner have the
port 51. The sleeve 58 is supported upon the gas
introduction tube 41 and is adjustable by means
of knob 59 and the control rod 6D. Movement of
the sleeve 58 back and forth varies the effective
opening between the tube 41 and the air control
tube 49. Similarly the sleeve Iil is slidably car
ried by the tube 43 and is adjustable by the knob
52 and .the control rod 63. Movement of the
great advantage of being able to deñnitely con
trol the rate of mixing of air with the gas; in
other words, it can be adjusted from a heavy,
long, luminous ilame condition to the condition
obtained with a clear flame burner. 'I'his is due
to the ability to entrain more or less air with
the gas without causing suiïicient turbulence to
affect the ability to direct the flame after it enters
the furnace.
The rate oi" ilame propagation of any gaseous
sleeve 6I serves to vary the eiîective discharge
area between the tube 49 and the second air con
trol tube 50.
Referring first to `the form of construction
shown in Figure 1, it is apparent that the gas
stream which is introduced through the nozzle
I9 draws with it an adjustable quantity of air
as the gas enters the tube 23. 'I'he amount of
air is controlled by the adjustment of the hood
22 to provide the desired clearance from the
closure member I6. This air is drawn from the
atmosphere and is independent of the air which
satisfactory luminosity to the iiame. Preferably,
all these tubes have a Venturi contour, in order
to reduce turbulence to a minimum. The bulk
of the air passes around tube 25 and envelops
the stream of gas as it passes into the furnace.
'I'he parallel flow of the streams delays combus
tion and gives long ilame characteristics.
Similar results are obtained with the burner
shown in Figures 3 and 4, which has correspond
mixture is dependent upon two factors; intimacy 30
of the mixture of air and gas, and upon the quan
tities of oxygen in contact with the gas molecules.
Therefore, in a gas burner design wherein I do
not want extreme intimacy of mixture between
all the gas and air which would give me extremely 35
quick burning, and also do not -want an extremely- '
slow rate of ilame propagation which would cause
my flame to burn away from the port blocks. it
is necessary to mix my air very carefully around
the outside periphery of the gas stream in such a
manner that the air does not mix with the center
core of the gas stream, but does mix intimately
sure. It will be apparent that the tubular por
tion I5 of the housing serves to deiìect the air - in the outside layer of the gas stream. By this
means I am able to get partial and quick burning
as it enters from the pipe I3 and insures a sub
stantially uniform distribution of air around the of a small portion of my gas which is sufllcient
periphery of the tubular portion. This air under to maintain combustion in the port block and the
pressure surrounds the air control tubes 24 and burner, and to >heat the center gas core to such
a temperature that cracking of carbon from the
2G. The amount of air entering between the dis
charge end of the tubular member 23 and the air hydrocarbons of my gas takes place, and that
control tube 24 is controlled by adjusting the resultant combustion progresses slowly from the 50
center of the gas stream as the outside air mixes
tubular member 23 back and forth in its support
ing member, the closure member IB. It will be with it as the llame flows down through the fur
apparent also that this adjustment will have some nace. 'I'he luminous llame which I obtain trans
eiIect on the primary air port in under the edge fers quantities of heat at a much lower ilame
of the hood 22. 'I'he amount of air which will be temperature than a clear flame and this results
in the effect of "softness” referred to above.
drawn in or permitted to enter through the pas
I have found in the operation of my burner that
sage between the first air control tube 24 and the
the ñow of air through the concentric open areas
second air control tube 21 is adjusted by move
and paralleling the ñow of the gas stream is the
ment of the tube 26 toward or from the tube 24.
In the 'form of construction shown in Figures result not only of static pressure of the air, but 60
3 andA 4, all of the air utilized is supplied through also the aspirating effect of the gas stream, or,
the pipe 42. The amount which enters within the in the case of the succeeding nozzle, of the air
and gas stream together. It -will be noted that
control tubes 49 and 5II is modified by the adjust
ment of the sleeves 58 and 6 I, as has already been the air chamber is so designed as to prevent di
rect flow of the incoming air into the nozzle, it
65 described. It will also be understood that the rela
tive pressures of the air and gas introduced into being arranged so that all the air travels _around
both forms of burners will have a material effect and finally enters the large circular space around
on the relative quantities of air drawn in at the the gas nozzle. By this means a good distribu
several points. The parallel streams of air and tion of the air flow is obtained. I have found that
70 gas pass through the port block where cracking the use of a Venturi type tube or nozzle is of
is supplied through pipe I3 and which is pref
erably under moderate superatmospheric pres
takes place and luminosity is imparted to the great assistance in smoothing out the ilow and
. preventing turbulence. 'I'he form of construction
name.
It will be seen from Figure 1 that the stream of has been designed to have an aspirating effect
and thus prevent any back flow of gas into in
gas which is directed through nozzle I9 is sur
coming air, -even if there is considerable differ 75
rounded by a stream of air which flows in be
3
2,1 17,270
ence in the velocities of the air and gas streams.
It is usually quite diil'icult to maintain equal
pressures of air and gas at all times due to vari
ations in the amount required for various oper
ating conditions. This situation is met by the
type of burner disclosed herein, which does not
rely on equal velocities of air and gas for parallel
flow.
-
'I'he ability to regulate at will the amount of
air entraiiied with the gas, by means of the ad
Justable collars shown in Figure 3, or by chang
ing the location of the adjustable nozzles in Fig
ure l, is also of great importance, as diñ'erent
operations require diñerent ilames, and I can
_ readily change from a long, soft iiame to prac
tically the condition obtained with the usual clear
flame burner. I have found the addition of suc
While I have shown certain preferred embodi
ments of apparatus adapted for carrying out my
invention, it will be obvious that it may be car
ried out in other forms of apparatus and in
other ways, and I contemplate such changes and
modiñcations as come within the spirit and scope
of the appended claims.
I claim:
1. In a burner, a gas nozzle for directing a gas
stream, an air chamber surrounding the gas
nozzle, a passage extending at substantially right
angles to the axis of the gas nozzle for admitting
air to the chamber, deflecting means in the air
chamber opposite the entrance of the air pas
sage into the chamber and extending> from the
discharge side of the chamber _substantially
around the gas nozzle to distribute air from said
passage around the gas nozzle, and overlapping
cessively larger increments of air is of great
advantage in reducing turbulence.
The type of construction which has been shown
bular members of successively larger diameters
also provides means to light the burner from the
outside of the furnace by the opening of the
said tubular members providing a plurality of an
space is provided by which a flame from a gas
of the gas nozzle whereby air is directed into par
allel ilow with the gas stream from the nozzle..
spaced concentric substantially cylindrical tu
surrounding the gas nozzle, the spaces between /
shutter 22. By revolving this shutter, availabler nular openings extending parallel with the axis
torch,or similar means, may be drawn through the
burner proper by the induction eil'ect of the gas
2. In a gas burner, an air chamber, a gas ad
which ilows from spud Il. This avoidsall chance
for explosion in the furnace, it eliminates unde
sirable lighting holes in the furnace wall, and is
mission tube extending into one side of the cham
ber, an air admission pipe discharging into the
of material assistance to the operator when a
large number of burners are in use.
The burner is applicable to the use oi natural
gas tube, a cylindrical air control partition ex
gas, coke oven gas, or 350 B. t. u. mixed coke
oven and blast furnace gas. the long ilame lumi
nosity, which can be obtained, being approxi
mately the same, using either natural gas or coke
oven lgas. With 350 B. t. u. mixed gas, the
amount oi’ luminosity which can be obtained is
less’than with the richer fuel.
chamber at approximately right angles to the
tending into the chamber from the side opposite
the gas tube concentrically with said tube. the
air control partition being larger than the gas
tube and extending into the chamber beyond the
end of the gas tube and also beyond .the dis
charge of the air admission pipe into the cham
ber, and an air control tube within the air con
trol partition adjacent the gas admission tube.
FRED S. BIÃOOM.
CERTIFICATE OF CORRECTION .
Patent No. 2,117,270.
Hay 1'?, 1958.
FRED S . BLOOH.
It is hereby certified that error appears in the printed specification
of the above mmbered patent requiring correction as follows: Page 5, second
column, line 18, claim 1, after the comma and before "and" insert the words
a discharge passage leading from the discharge side of. the air chamber;
line 21, same claim, after "nozzle" and before the coma, insert the words
within the discharge passage; line all, same clam 1, after “air” insert
from the air chamber; lines 57 and 5B, claim 2, strike out "and an air con
trol tube within the air control partition adjacent" and insert instead
the words the air control partition extending beyond the chamber to form
a discharge passage, andanair control tube within the air control par-
tition 'surrounding and spaced from; and
that
the said Letters Patent
should be read with these corrections therein that the same may conform
to the record or the case 1n the Patent office. '
Signed and sealed this 5th day of July, A. D. 1958.
Henry Van Arsdale,
( Seal)
. Acting Commissioner of Patents.
30
3
2,1 17,270
ence in the velocities of the air and gas streams.
It is usually quite diil'icult to maintain equal
pressures of air and gas at all times due to vari
ations in the amount required for various oper
ating conditions. This situation is met by the
type of burner disclosed herein, which does not
rely on equal velocities of air and gas for parallel
flow.
-
'I'he ability to regulate at will the amount of
air entraiiied with the gas, by means of the ad
Justable collars shown in Figure 3, or by chang
ing the location of the adjustable nozzles in Fig
ure l, is also of great importance, as diñ'erent
operations require diñerent ilames, and I can
_ readily change from a long, soft iiame to prac
tically the condition obtained with the usual clear
flame burner. I have found the addition of suc
While I have shown certain preferred embodi
ments of apparatus adapted for carrying out my
invention, it will be obvious that it may be car
ried out in other forms of apparatus and in
other ways, and I contemplate such changes and
modiñcations as come within the spirit and scope
of the appended claims.
I claim:
1. In a burner, a gas nozzle for directing a gas
stream, an air chamber surrounding the gas
nozzle, a passage extending at substantially right
angles to the axis of the gas nozzle for admitting
air to the chamber, deflecting means in the air
chamber opposite the entrance of the air pas
sage into the chamber and extending> from the
discharge side of the chamber _substantially
around the gas nozzle to distribute air from said
passage around the gas nozzle, and overlapping
cessively larger increments of air is of great
advantage in reducing turbulence.
The type of construction which has been shown
bular members of successively larger diameters
also provides means to light the burner from the
outside of the furnace by the opening of the
said tubular members providing a plurality of an
space is provided by which a flame from a gas
of the gas nozzle whereby air is directed into par
allel ilow with the gas stream from the nozzle..
spaced concentric substantially cylindrical tu
surrounding the gas nozzle, the spaces between /
shutter 22. By revolving this shutter, availabler nular openings extending parallel with the axis
torch,or similar means, may be drawn through the
burner proper by the induction eil'ect of the gas
2. In a gas burner, an air chamber, a gas ad
which ilows from spud Il. This avoidsall chance
for explosion in the furnace, it eliminates unde
sirable lighting holes in the furnace wall, and is
mission tube extending into one side of the cham
ber, an air admission pipe discharging into the
of material assistance to the operator when a
large number of burners are in use.
The burner is applicable to the use oi natural
gas tube, a cylindrical air control partition ex
gas, coke oven gas, or 350 B. t. u. mixed coke
oven and blast furnace gas. the long ilame lumi
nosity, which can be obtained, being approxi
mately the same, using either natural gas or coke
oven lgas. With 350 B. t. u. mixed gas, the
amount oi’ luminosity which can be obtained is
less’than with the richer fuel.
chamber at approximately right angles to the
tending into the chamber from the side opposite
the gas tube concentrically with said tube. the
air control partition being larger than the gas
tube and extending into the chamber beyond the
end of the gas tube and also beyond .the dis
charge of the air admission pipe into the cham
ber, and an air control tube within the air con
trol partition adjacent the gas admission tube.
FRED S. BIÃOOM.
CERTIFICATE OF CORRECTION .
Patent No. 2,117,270.
Hay 1'?, 1958.
FRED S . BLOOH.
It is hereby certified that error appears in the printed specification
of the above mmbered patent requiring correction as follows: Page 5, second
column, line 18, claim 1, after the comma and before "and" insert the words
a discharge passage leading from the discharge side of. the air chamber;
line 21, same claim, after "nozzle" and before the coma, insert the words
within the discharge passage; line all, same clam 1, after “air” insert
from the air chamber; lines 57 and 5B, claim 2, strike out "and an air con
trol tube within the air control partition adjacent" and insert instead
the words the air control partition extending beyond the chamber to form
a discharge passage, andanair control tube within the air control par-
tition 'surrounding and spaced from; and
that
the said Letters Patent
should be read with these corrections therein that the same may conform
to the record or the case 1n the Patent office. '
Signed and sealed this 5th day of July, A. D. 1958.
Henry Van Arsdale,
( Seal)
. Acting Commissioner of Patents.
30
Документ
Категория
Без категории
Просмотров
0
Размер файла
584 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа