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Патент USA US2125963

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Aug. 9, 1938.
2,125,963
W. C. S’KINN ER
`
\ FUEL BURNER
V Filed April 1, i955
s sheets-sheet 2` f
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WILLIAM C_SKINNE‘R
'v 2,125,963
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:UNITED STMIÍES'Iv :PATENT- OFFICE
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8,125,063
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'me invention relaté tornei nimm of me type'` >l incandescent; thefcontinued’e of airî there- _
shown and described in myformer I’atent-No‘.' '_-through will producecarbon monoxide which >also _
11,225,200, issued-«my s, 1917. AIl; is the vcolector .n burned
in-‘ßnecombim‘tion
ì
the present invention- to simplify the construction ,.
l decrease cost of manufacture, facilitate repairs
construction while
eiïectêa gas burner. ' .'
and replacement *ofl parts, V»improve the operation
chamber. Thus the
solid fuel becomes'in
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_
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5
To cause the operation *just described, it is.
and generally to obtain better and more eilicient ' essential to normally ‘prevent entrance -of air ‘
construction and- combustion. -With these ob-' g through the bottom supporting the~- fuelbed and
at the ‘same time it is necessary to provide 'for
~ jects in view the invention consists in various fea’
lll «tures of construction as hereinafter set forth. '_
. - _
In .the drawinsil:~
"the removal of ash> after the fuel is consumed. 10 -
_
j ~ Both of these functions are very satisfactorily per
formed- in my rpresent fuel'burner by a novel con
struction of dumper fuel support-constituting `one
_ Fig. v1 is a vertical central cross section through _
‘my improved f_uel burner showingïthe same as
applied to a hot air heatingjurnace;
_
is in the construction'of the combustion chamber 15 1 _
line 2_4, Fig.’ 1; '
f
which is .formed in sections so that in case of the
Fig. 3 is a vertical central section'from front
breaking or burning out of one section it can be
toward rear or at'right angles to Fig. l, line 3_3,
easily replaced without dismantling the entire
structure. A third improved feature _is in the
Fig. 2;
_2°
' _of my improvements. Another improved feature
»
. Fig. 2-'is ahoriaontal section substantially on4
_
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Fig.v 4 is `a sectional perspective view;
_
construction of a nre box which also is formed in 20
Fig. 5 is. an enlarged cross section through the _
fuel support on line _5-4, Fig. 2;
Fig. B is an'elevation of the fuel support »i and
" 25
ash dumping mechanism; "
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the subject matter of the present inventi‘on.
Fig. 'I _is a section. through the ash box‘showins
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Fig. 8 is a section showing the connection be
_ tween therrockable damper bars and the actuat
30 ing mechanism therefor.
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In detail, and as shown in the drawings, A is a.
base plate on which is supported a rectangular ash 25
box section B having ~an annular _top plate C
for supportingthe walls of a circular iire box D
and -surrounding circularair chamber E; Sup
ported _from-.the‘plaìte C on opposite sides thereof
and secured by _bolts Fare parallel angle bars G._ 30 _
__
. _ the manner oi’ engaging the fuel supporting mem
ber therewith:
sections separately removable and replaceable.y
These and various other-- improved features are
'
While my improved f_uel burner is applicable to - These support a rectangular frame H which has
an air v‘sealing engagement with a depending
-varioiiaheating devices'. _I'have shown it as ap
plied-to a hot- air heating furnace. l The general nage C'_ on -thejplate C.; The fuel support com
type-of
as shownin my former patent prises a series of parallel inverted V-shaped chan
_ -35' above refe?red'to comprises a central combustion
nel barsy I, some of which extend between the 35 _
chamber 'formed' of refractory material and hav
front and rear sides of the frame H and the cen
ing perforated walls, a fuelholding'chamber sur- _ tral bars extend from >’front >and rear to a rectan
rounding this combustion chamber, the fuel being
supported upon a normally; imperforate
`40' an annular air feeding chamber surrounding the
fuel holding chamber and communicatingA there
Y
sular ,central frame I? forming a support _for'the
latter. This frame I' while externally rectangu-V
lar has a~circul`ar> opening therethrough which is `40_
surrounded by 'a circular'rib P‘ffor’ engaging the" _
with through apertures in the walls thereof, and
walls of the, central cobustion, chamber J. yA
butterfly damper I3 is piiîoted within the frame
ber'and the chimneyu- With such an arrangement - I', being> attached to an annular plate, I4, seated
_ß when in full operation the volatile. constituents of in
saldi-frame.
»bars K which
`Within.
extend
the channel.
from front
_barstoI rear>
are _ `
the. fuel'are distilled in the fuel chamber and rocker
al draft connection between' the combustion cham
commingled with air
radially inward from ` of the frame H and are journaled in bearings K'
the surrounding air chamber,~the1commingled- attached iso-said frame`by bolts K2. Each of these
-
products entering the central combustion cham-i
50 ber where they are burned. - This central combus
‘tion chamber is alsoprovided with an additional
~ v
rocker bars -is provided with a pair of oppositely '_ _
extending wings K3 and-K4. The wings Ka ex-_- 50
tend across thespace between adjacent channel -«
air supply controlled _by a damper or valve rand "bars I, being provided with sharpened> ribs K5’
thus substantially
combustion~ is_-ob-_ andK‘i for engaging V-shaped grooves K" 'on the
tained. After the volatiles have been distilledV undersides of said channel bars so as to 'form subI
from the fuel and the solid portions have become f stantiallyf air-tight closures. therebetween. .The 55
2
2,125,968
wings K4 are within the recesses in the channel
a plurality of columns N1I which at their lower
'ends engage sockets C’ on the plate C and at
with V-shaped grooves Ks engaged by ribs K’ at their upper ends engaging similar sockets on the
the outer edges of the wing K3. Thus in the closed , .-radiator. The radiator comprises a hollow cen
position the entire area within the frame H with 'tral .portion 'N‘ having a plurality of air tubes Nl ,
the exception of that within the central frame I' passing _upward therethrough; also., an annular
is closed by the bars I and wings K3 and K4. The portion N‘s extending outward from said central
rocker bars K which extend beneath the central portion being of dished form and an upper re
frame I" have the wings K3 and K* interrupted versely dished annular plate N". Between the
portions N‘ and N" are outer and inner concentric
10 so as to extend only to the outside of said central
bars I and are provided on their under faces
frame. This central frame has its side and end'y
walls extended downward as indicated at I5 to the
level of the upper face of the wing K3, thus closing
any air connection between the space outside and
inside said frame.
`
As previously described. the outer walls of the
air chamber E are supported on the plate C 'and
extend upward therefrom. At the top of these
walls is an annular plate L having a rib L' ex
20 tending within the outer wall of the air chamber
E and a rib L2 for extending within a‘wall of
the lire box D. This ñre box is formed of a
series of alternate segments D' and D2 having
overlapping portions D3 and D4 formin'g a break
25 joint therebetween. At theirylower ends the seg
walls Ns and N’ forming therebetween a nue
which is connected by> the elbow N' with the
chimney pipe.. Thus the hot gases of combustion
on their way to the chimney will first pass radially
outward through the central portion N4 and 15
around the air passages N5. then will pass through
the annular flue 'between the walls N1 and N’ _
and finally to the chimney.' `This will providev
a large amount of heating surface for contact
ing with the air enclosed within an outer air
~iaciret
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As just described. the weight of the radiator
is carried upon the columns N2 while the walls
of the central 'combustion chamb‘er J are carried
' on the plates J2 and L. 'I‘he tube M which con
ments D’ and D2 are provided with tongues D5
nects these -two parts is formed in a plurality
which _engage a groove in the upper face of >a
of segmentswhich are externally engageablqwith
circular rib H’ integral with the frame H.v 'I'he
upper ends of the segments D’ and D2 are spaced
30 from the plate L and are provided with out
wardly extending flanges Ds which are secured
to said plate by bolts D". Sleeved on these bolts
are spacers Ds which hold the plate downward
with its tongue D5 in engagement with the groove
35 in the rib H’. Thus all of the segments are se
the upper end of the central combustion chamber
J and the lower end of the radiator and are then
secured to each other’by surrounding split bands
M’ connected by bolts M1. This permits of easily
assembling the patin and also easily removing
them in case it is necessary for repairs, it being
only required that the bands M'. should be re
moved and the segments of the tube M detached,
- curely held in position and together form a cir
after which the segmental walls of the central
cular ilre box. These segments are alsoprovided combustion chamber J maybe lifted out from
with slots or apertures D’ through which air can- .the fire box.
»pass from the outer air chamber into the interior
Where, as shown, the *fuel burner is used in a
hot air heating system the outer jacket O sur
.40 of the fuel chamber. The construction just de
scribed is such that if at any time it becomes
rounds all of the other parts and permits air
necessary to replace any portion or portions of entering from the lower return conduits O' to
the fire box this can be easily accomplished by come in contact with the wail of the air chamber
disengaging the bolts ‘D'I and removing the filler E with the tube M and all portions of the sur
45 blocks Ds. after which the segments may be lifted
face: of the radiator N. The upper end of the
to disengage their tongues D5 from the groove in jacket O insteadof coping inward as is usual in
the ribs H’ and then removed outwardly. " `
hot air furnace constructions is of :the reverse
The wall of the central.- combustion chamber J l form. ilaring outward as indicated at 03. This I
~ is circular in horizontal section and slightly tapers have found greatly stimulates circulation of the
from its upper end downward. Y This Y wall* is
heated ‘air through ' the distributing conduits
also formed in segments. preferablythree in num
ber. and are of a highly refractory material such
which latter are connected into the flaring por-_
tion as indicated at O‘.
40
.
as carborundum. They are further'provided with
At the front of the jacket O is an _inwardly
. slots J’ which permit passage .of the combustible , -reoessed frontnlate P'whion provides aoceos‘to
~55 gases. from .the fire box 'into the combustion
chamber where these gases are commingled with
air passing upward through the opening in the
frame >I'._. To support and hold' the combustion
chamberlthere is provided an annular frame J’
which is seated in the inner portion of the plate
L and which provides' a ledge- for- engßsinl an
outwardly extending flange J3 on each of the leg
ments. At their lower ends the segments engage
the door Q_ of che ash oit and also to'ì. door-_or
lid R. for feeding fuel into the flre‘box. A‘water
tank 'S is arranged in this front portion to humid
ify the air
intothe circulating system, a
- portion of nud tank extending within ynuo Jacket.
To permit of engaging'or removing the fuelA
support, Iî preferably provide the following con- ‘
struction: The angle'bars G are connected at >
their real’ ends t0 the plate C by the bolts F, as
the frame I’ which ‘holds them from lateral dis
»Dlaoement._"1‘he‘ combustion chamber is con
previously described. These angle -bars'fthe'n in-~'.
nected to the'chimneyl draft by means of an up
Y G’ to form a guidewayover-which the frameVH -
wardly extending tube M and aradiator N which
latter iseonnected at its upper end by an elbow‘N'
l ` . with thechimney nue.
The arrangement is such
7o that :the chimney draft will create a partial
l vacuum within the tube M and radiator N,' this
` being communicated to the central combustion
` chamber J and causing the drawing in of the
fuel gases from the iire box. The radiator N is
.75 supported fromthe ash pit section by means of
cline downward toward the frontl as indicated at
may be passed and raised atdts rear end. To this
end the frame H has proiecting pins H1 whichslidably engage 'the angle barsG so that _when
said frame is moved inward ’through the open 70
door Q of the ashpit, its rearend'will be elevated.
The front end of the frame is _provided with up
wardly extending hooked lugs H4 whichv pass
through apertures in the4 top plate C, and are
then engaged by turned buttons H2s to
75
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, the frame in this position. When thus supported
ger that
carelessness some portion of M
the rear `bar H’ engages the depending ñange C' thesewalls may be broken and if the construction
on the plate C and the side barsof- the frame H ' is such as to preclude removal of the broken part
engage the similar depending flanges on the plate it might be n
to disassemble the whole
C. In this way an air sealy is provided to prevent furnace. However, with -my improved construc
air fromv within the ash box passing upward tion any section of the wallof the nre box can be
through the fuel support.
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removed independently from any other- section by
'
With'the construction as-described. the- ope - ' merely unfastening the 5 bolt‘_ D"„ _ removing the
' nenas as follows: The starting :un is placed in spacer D* and then lifting
plate to disengage
the fire box and kindled through’the opening nor
its tongue Di from the groove in the rib'H'. The 10
mally closed by the cover It, after which this box ,v walls ofthe central combustion chamber can also
is filled'with fuel of any desired quality but pref- . beremoved by unclamplng the bands M?, disen
erably of lower grade, such as slack. ’lhe damper ' casing the segments or thetube. 'after which the
or butterfly valve P is normally open but during combustion chamber- may be liftcdout of engage
16 the feeding vof fuel into the fire box is closed by ment-with the. plate J2;
-v '
turning >a handle I* extending to the front of the
'Another important Vvfeature is that the air jacketf
furnace and thus the chimney draft will prevent is formed with haring side walls Qî'at its upper
the escape of gas outward through »the fuel feed end while the top 05 lnclines downward, towards
opening.l ' Aftervclosure of the fuel door R the the center. Thus the heated air rises within the
valve F is`open which permits air to pass upward jacket and'tends Vto pass outward into the space
from the ash pit section into the interior of the between these flaring walls and top, thereby stim'
L combustion chamber and'tdcommingle with gas- , ulating circulation through the air nues O‘.
eous fuel
inward from the' fuel box into
-What I claim as my invention is:
‘the combustion chamber. This
fuel is
. 1. Ina fuel burner of the type including a~,cen-.
composed of the volatiles in the solid fuel 'com y ïtral perforated combustion chamber, a. surround
mingled with air passing» through the slots in the ing outer air'chamber and an Vintermediate fuel
walls of the ilre box, through the fuel and slots in~ ~ chamber. an ash- box s'ection beneath said cham
the walls ofthe 'combustion chamber. No air is
bers, a top plate for said ash box section having an ’
permitted to pass upward through the fuel sup
opening therein registering with the air¿chamber, Y
port as the wings Ks and K4 form a-practically ' fuel chamber and combustion chamber,- 'a fuelf'
- ,« air-tight closure. However, air is permitted to supporting member within and ash‘b‘òx supported
> enter the annular air chamber through a draft from said top plate'to form an
seal therewith,k
door 8€ a?d‘is then distributed uniformly through said member comprising a substantially rectanguf'
`theilslots in the walls of the circularfire box to-A lar frame, aseriesof spaced channel bars ex
pass radially inward through. the fuel therein. .. tending across said vframe and a central annular
When the burner is in full operationu the fuel
frame registering with the.> combustion chamber,>
and a-series of rockable barshaving overlapping
within the ilrev box is consumed by process of low
-'temperature distillation, therefore. clinkers are
- -never formed in the ilre box of this furnace. All
-released combustible gases are drawn into the
l
Il;
oppositely extending wings. one of said wingsïof »
each rockable bar being within one of said chan
nel bars 'and the other of said wings extending'
. ,centrall combustion-chamber where they are across the space between said channel bars and
mixed with free oxygen admitted at the bottom ì forming a sealing engagement fwith the opposite
'
or lower end of said chamber. - 'I'husanhinstan
'taneous ignition of all combustible gases occurs.
145 producing an intensely hot flame. -The heated
products of combustion pass upward through the>
e wing of the adjacent rockablebars whereby said’ -- -
channel bars and rockable bars will form ~in one-
position a closed bottom for supporting the fuel
within said fuel chamber and in another posi
d . walls‘of the.tube and into the-radiator, thusv> y tion -said rockable bars will permit the
transferring said heat tothe surroundingair. At
of ash from said fuel chamber.
.
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dumping>
„
suitable intervals ash may be removed from the
' 2. In a fuel> burner of the type including a
»lower part ofthedlre boxV by rocking the bars K
central perforated combustion chamber, a Vsur 50
rounding outer air chamber andan intermediate
fuel chamber, an ash. box section beneath said
chambers, s top plate Vfor said ash boxsecti'on
` which, as shown, >may be accomplished by con
necting the endsof-.said bars with rock arms T,
au of which are pivotany connected with a shaker
bar T' operated by a shaker lever T2. The rock
ing ofthesé bars will swin‘g Vthe wings K3 and K4
’ oppositely permitting the ash to drop out from
having an-openlng thereinregisterin'g with the n
air chamber. fuel chamber and combustion cham-l
ber, a fuel vsupporting membei'within' said ash~box , v
the space between thev stationary- bars -I. The supported from said top plate to form an air seal
‘wings are then :returned to normal position where therewith, said membermcomprising a 'substan- '
again an air seal is enected preventing _any 'pas
tially rectangular frame, a series of spaced chan- .
sage of airthrough the fuel Support.
- nel'bars extending across said frame and ‘a central
« Some of the important features of the- inven
tion are: (1_) the means for effectively preventing
passage of air- upward through the fuel support;
This is accomplished by wings K3 and K4 together
with the sharp edged ribs K5, K’ and K’ which en-l
gage the v'-shaped grooves K" .and - K'. There
always be a certain quantity of ash supported
-' upon these wingswhich will seal any slight spaces
.
that may- remain when the wings are in closed
position. 'At the same'time the construction is
'
_ annular frame registering withv the combustion
chamber, and a series'of roozsvka‘nle‘bars` having
overlapping oppositely extending wings, one of
said wings of each rockable bar belng‘within one
of said channel bars and the
ofï'said 4vwings `
extending acrossthe space between said channel , f
bars and forming a sealing engagement ¿with the .
opposite wing of the adiacent `rockable bar where
by said >channel bars and rockable bars will'form
in _ one position a closed bottom for lsupporting
such to pernnt of readily and enectively removing ' the fuel `within said
chamber and in another
' the ash as frequently as necessary.
(2) 'l'he ease with whichthe walls of the com
` bustion chamber -and of the nre pot may be re
moved is very important. l There is always dan
position said rockable bars‘willpermit the dump'
ing of ash from said fuel chamber, a
for-said ‘
air chamber supported upon -saidtop Vplate sur- I”
mundingtheopeningthereimawallforthefuel Il
4~ `
.
2,125,908
. chamber supported on said hollow bars and a`
perforated combustion chamber wall supported
on said. inner annular frame. .
3. In afuel burner of the type including a cen
tral perforated combustion chamber, a surround
ing outer airfchamber and an intermediate fuel
fuel chamber, an ash box section' having an
opening beneath said airv chamber, fuel chamber
and combustion chamber, a normally closed fuel
supportingmember within said ash box section
chamber, an‘ash box section beneath said cham
extending across said opening, an air chamber
wall supported on said ash box section surround
ing said opening, a top plate for said air chamber
nel bars vextending across said frame and a cen
of the top plate for'said air chamber whereby 15
bers, a top plate for said ash box section having ’and a portion of said fuel chamber supported Y
an opening therein registering with the air cham- -` from said wall, a complementary annular cover
plate for said fuel chamber, a circular perforated 10
10 ber, fuel chamberand combustion chamber, a
fuel supporting' member within said ash box> fuel chamber wall formed of a series of overlap-I
supported from said top plate to form an air seal ping segments, said segments being suppçrt'ed at
their lower ends on said member and det‘achably
therewith, said member comprising a substan
connected at their upper ends to the underside
tially4 rectangular frame, a series of spaced chan
15
upon removal of said annular cover plate said
tral annular frame registering with the combus
tion chamber, and a> series of rockable bars' segmentsl may be individually removed and re
_having overlappingI oppositely extending wings,
one of s'aidwings of each rockable bar being
within one of -said channel bars and the other of
said wings extending across the space .between
said channel bars and forming a sealing. c_pgage
rment with the opposite wing of the adjacent rock
able bar whereby said channel bars and rockable
bars will form in one position a closed bottom
for supporting the fuel within said fuel chamber
and» in another position said rockable bars will
permit the dumping of ash from said fuel cham
ber, a wall for said air chamber supported upon
said top plate surrounding the opening therein,
a wall for the fuel chamber supported on said
channel bars and a perforated combustion cham
ber wall supported on said inner annular frame,
said rockable bars extending beneath both the
fuel chamber and the surrounding air'chamber
whereby any ash escaping from the fuel cham
ber into the air chamber will be dumped in the
open position of said rockable bars.
~
4. In a fuel burner of the type including a
central perforated combustion chamber, a sur
rounding outer air chamber and an intermedi
ate fuel chamber, an ash box sectionbeneath
said chambers, a topplate for said ash box sec
tion having an opening therein registering with
45 the air chamber, fuel chamber and combustion
- chamber, a fuel supporting member within said
ash box supported from said top. plate to form
` an air seal therewith, said member comprising
_a substantially rectangular frame, a series of
50 spaced channel bars extending across said frame
and a central annular frame registering with the
combustion chamber, and a series of rockable
bars having overlapping oppositely extending
wings, one of said wings of each rockable bar
55 being within one .of said channel bars and the
other of said wings extending across the space
between said channel bars and forming a seal
ing engagement with the opposite wing of the
adjacent rockable bar whereby said channel
60 bars and rockable bars will form in one position
a closed bottom for supporting the fuel-within
said fuel chamber and in another position .said
placed without disturbance of adjacent sections.
6. In a fuel burner of the type including .a
central perforated combustion chamber, a sur 20
rounding outer air chamber and an intermediate
fuel-chamber, an ash box section having an open
ing beneath said air chamber, fuel chamber and
combustion chamber, a normally closed fuel sup
porting member within said ash box section ex
tending across said opening, an air chamber wall
supported on said ash box section surrounding
said opening, a top plate for said air chamber
and a portion of- said fuel chamber supported
from said wall„a circular perforated fuel cham
ber wall formed of a 'series of‘overlapping seg
ments, said segments being Aengaged at their
lower ends with said fuel supporting member
and detachably connected at their upper ends to
the'underside of the top plate for said air cham
ber whereby. said segments may be individually
removed and replaced without disturbance of ad
jacent sections, an annular cover plate for a por- `
tion of said ffuel chamber removably supported
from the top plate, Ia combustion chamber wall
formed in a plurality of segments supported on
said cover plate and permitting of’ removal with
out disturbance of the wall of the fuel chamber.
'7. In a fuel`burner of the type including a
central perforated combustion chamber, a sur
rounding outer air chamber and _an intermediate
fuel chamber, an ash box section beneath said
chambers, a top plate therefor having an open
ing therein beneath said- air chamber, fuel cham- '
ber and combustion chamber, a normally closed
fuel supporting member extending across said
opening, an air chamber wall supported on said
top plate surrounding said opening, a cover plate
for said air chamber and fuel chamber supported
by said air chamber wall, a fuelchamber wall
formed in a plurality of overlapping segments,
the lower ends of each segment having a tongue
and groove engagement with said normally closed
fuel supporting membery and the upper ends of
each segment being spaced from the cover plate
of said air chamber and fuel chamber, a rib de
pending from said latter cover- _plate overlap
rockable bars will permit the dumping of ,lash ping said segments and a spacer between each
from said fuel chamber, said sealing engagement segment and the cover plate thereabove for nor
mally maintaining the tongue and groove engage
65 comprising V-shaped ribs on one of said opposite
ly extending wings engaging V-shaped grooves in4 ment between the lower end of said segment and
the other of said wings.
_
,
,
5. In a fuel burner of _the type including _a
vv‘central perforated combustion chamber, a sur
70 rounding outer air chamber and an intermediate
y said fuel supporting member whereby on the
removal of said spacerfeach segment may be lifted
» to disengage said tongue and groove engagement.
WILLIAM c. sKrNNER.
70
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