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Патент USA US2110352

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March 8, 1938.
v2,110,352
w. v. BAKER
VERTICAL CONVEYER OVEN
Filed Feb. 1, 1957
2 Sheéts-Sheeh 1
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H9. 1
Snventor
Gttdrneg
March 8, 1938.
2,110,352
w. v. BAKER
VERTICAL CONVEYER OVEN
Filed»Feb. 1, 1937
2. Sheets-Sheet 2
i
4.
F/g 4
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4
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E
321mm:
Patented
8, 1938'
UNITED STATES
PATENT OFFICE "
2,110,352
vnn'rrcar. oonvaraa oven
Wedworth V. Baker, Detroit, Mich.
Application February 1, 1937, Serial No. 123,549
5 Claims. an. 34-12)
My invention relates to vertical conveyer ovens
and an object is to improve the operation of heat
of- the plenum chamber 5. The valve I3 is lo
cated below the upper opening 9. Numeral it
indicates an opening through the right hand wall
of the dilution chamber 4, above the upper end
of the plenum chamber 5. Numeral i5 designates 5
ing, cooling, and oxydizing cores passing through
said oven and in this connection the employment
5 of a plenum chamber and horizontal currents.
'
In the accompanying drawings:—
a swinging valve adapted to regulate the area of
passage through the opening l4.
'
Numeral l2 indicates a housing covering the
openings ll. Numeral I6 indicates a centrifugal
fan, its intake passage communicating by a pipe '10 .
with the interior of the housing l2, and by a
Figure l is a diagrammatical vertical central
section of an oven embodying my invention.
Figure 2 is a detail section on line 2--2 of Fig
10 ure 1.
Figure 3 is a detail section on an enlarged scale
of that portion of Figure 1, enclosed by the broken
branch pipe It, with the suction chamber A4
line 3-3-3-3, with the carriers at a somewhat
at No. Numeral l9 denotes stack with which
the discharge port oi the blower i6 communicates.
lower level.
15
Figure 4 is a detail section on the line 4-4,
Figure 2.
.
.
-
Numeral 20 denotes a second centrifugal vfan, or 15 '
blower, its intake port communicating through
a pipe 2| with the upper end oi the dilution
v
Referring now to the reference numerals on
the drawings:---
>
chamber as indicated at 2|a.
2 indicates the enclosed upper portion oi the
20 oven casing.
‘
"
,
Numeral 22 vdenotes a pipe connecting the dis
charge port of the blower 20 with the plenum. 20
The numeral 4 denotes a dilution
chamber shown as concentric with the casing 2,
and Al is a suction chamber. The numeral .5
designates a plenum chamber. Numeral 3 de
chamber 5, at 23. .
.
The combustion chamber is a refractory box,
usually with steel plate outsides. The gas or oil
notes a combustion chamber shown here as 10.burner is usually a nozzle type mounted outside
25 cated within the dilution chamber 4.
'
the end wall, projecting ‘its ?ame inside, and 25
Numeral 6 denotes a conveyer apparatus,.the - through a checkered or slotted top slat intojthe
carriers 6a, of which, rise at the left of the dilu
tion chamber 4, and descend at the right thereof
. If electricity were the source of heat, the ele
dilution
chamber.
'
‘
'
1
'
i
as indicated by arrows in Figure 1. Numeral ‘I , ments would be located where the heater is shown.
30 designates a vent stack and ‘la, are openings
thereinto from the casing 2. Numeral 2‘! denotes
The heater might even be located outside of the‘ 30 I
casing‘ and still give the bene?ts of the design by
an automatic damper in a passage between the connecting the circulating system between the
casing 2 and stack ‘I, which closes by an air, or ' pressure and exhaust chambers.
electric motor, when the temperature reaches an
' The operation of the above described'apparatus .
35 arbitrary limit (say 200") and again opens auto
matically when the ‘temperature drops to ‘say
195°. The casing is open to the atmosphere'when
the apparatus is‘not in operation.
r is as. follows:
_
35
Hot air having a’proper amount. ‘of-oxygen
thereinis vtaken from the upper end of the. ex- ‘
_
haust chamber 4 and projected into the plenum
Numeral 8 denotes openings in the right'hand ' - chamber 5' by the blower 20. The required oxygen _
40 wall of the casing 2, controlled by horizontally > is supplied by fresliair taken‘ in through ‘the open- 40 .
operating valves 8a; and 9, are openings in the -
ins H. or upper opening -9.-_o'r' both. the. supply
beingreguiatedby manipulating thevalves l3“
right hand wall of the suction chamberAl, oppo
site the openings 8, and correspondingly con
and I5.‘ 'Theblowerit draws the gases from the
trolled by the horizontally operating valves “. '
suction chamber A4.‘ and the housing 12.‘. ,. Y ' " -
45 The numeral Iii designates openings through the
left hand wall of the plenum chamber 5, and ii
The corespas'sing .upv at theleft, aresubjectedI-45 i
to horizontal currents of-gases passingjout- of
designates corresponding openings through the the. plenum-chamber} throughthe openings in
left hand wall of the casing 2, opposite the open
and being drawn into'the opposite'openings, Ii
ings iii. The openings Ill and II are controlled. and discharged through the stack l9.~
. Y - '
50 by horizontally operating valves, respectively Ilav I 'If a, further recirculationof gasesisrequired 50
and I la. All of the openings Ill, except the lowes
one open into the plenum chamber 5'.
.
'
Numeral l3 denotes a valve adapted to control
the area of passage between the right han'dwall
55 of the suction chamber Al, and the opposite wall
1 a 'pipe may lead from the discharge port of the
blower I‘ to the upper endlqf' the'dilution cham
her‘! as shown in vFigure 1 in broken lines.
.
The cores passing. downward at. the right'are
cooled by horizontal currents of air entering the 55
r
2,110,352
‘ casing 2 through openings 8 and into the ‘suction
chamber A4 through the opposite openings 9.
Each of the openings through the walls of the
casing and chambers may be separately adjusted
by its valve. so that the treatment of the cores
may be regulated as desired.
Having thus described my invention, what I
claim is:
'
1. In an apparatus 01' the kind described, a
said dilution chamber having an opening to said
casing on the other side 01' said dilution chamber,
a heater in said dilution ‘chamber, and means
for drawing gas from said dilution chamber andv
forcing it into said plenum chamber, and means
for severally adjusting the area of said openings.
7 4. In an apparatus of the kind described, a
casing, a dilution chamber in said casing, an
apparatus adapted to convey carriers in said cas
casing, a dilution chamber in' said ,casing, an
ing in one direction on one side 01' said dilution 10
apparatus adapted to convey carriers in said cas
chamber and in the other direction, on the other
ing in one direction on one side of said dilution vside of said'chamber, a plenum chamber, said
chamber and in the other direction on the other ' plenum chamber having an opening to said cas
side of said chamber, a plenum chamber, said
plenum chamber having an opening to said cas
ing on one side of said dilution chamber and
said dilution chamber having an opening to'said
casing on the other side of said dilution chamber,
a heater in said dilution chamber, and means
, for‘ drawing gas from said dilution chamber and
I forcing it into said plenum chamber.
2. In an apparatus of the kind described, a
casing, a dilution chamber in said casing, ‘an
apparatus adapted to convey carriers in said
25 casing in one direction on one side oi‘ said dilu
tion chamber and in the other direction‘gon the
other side of said chamber, a plenum chamber,
said plenum chamber having an opening to said
casing on one side of said dilution chamber and
said dilution chamber having an opening to said
casing on the other side of said dilution cham
ber,v a, heater in said dilution, chamber, and
ing on one side of said dilution chamber and
said dilution chamber having an opening to said 15
casing on the other side of said dilution chamber,
a heater in saiddilution chamber, and means
for drawing gas from said dilution chamber and
forcing it into said plenum chamber, said casing
having an opening through its wall opposite said
opening from said dilution'chamber.
'
g 5. In an apparatus of the kind described, a cas
ing, a dilution chamber in said casing, an appa
ratus adapted to convey carriers in said casing
in one direction on one side of said dilution
chamber and in the other direction on the other
side of said chamber, a plenum chamber, said
plenum chamber having an opening-to said cas
ing on one side of said dilution chamber and
said dilution chamber having an opening to said 30
casing on the other side 01’ said dilution chamber,
a heater in said dilution chamber, and means for
means for drawing gas from'sai'd dilution cham ‘ drawing gas- from said dilution chamber and
ber and forcing it into saidple'nu'm chamber, and forcing it into said plenum chamber, said casing,
having an opening through its wall opposite said
means for adjusting the area of, said openings.‘
3. In an apparatus of jthe'kind described, a ‘ opening from said dilution chamber, and an
casing, a_ dilution chamber in said casing, an 1 opening from said casing opposite said opening
from said plenum chamber, a housing outside of
apparatus adapted to convey carriers in said cas
ing in one direction on one side of said dilution said casing enclosing the last named opening
10 chamber and in the other direction on the other from said casing, and means for maintaining a
side of said chamber, a plenum chamber, said vacuum in said housing.
plenum chamber having an opening to said cas
WEDWOR'I'H V. BAKER.
ing on one side of the dilution chamber and
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