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Патент USA US2135828

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Nov. 8, 1938.
L. R.4 MCAFOOS
FURNACE DOORFRAME
Filed oct. 15;l 19:57
2,135,828
Patented Nov. 8, 1938
2,135,828
UNITED STATES PATENT OFFICE
2,135,828
FURNACE DOORFRAME
Lawrence R. McAfoos, Pittsburgh, Pa., assigner
to Reliance Steel Products Company, Rankin,
Pa., a corporation of Pennsylvania
Application October 15, 1937, Serial No. 169,118
Ul
20
2
30
9 Claims. (Cl. 122-499)
My invention relates in general to furnace door an opening i 9 is provided between the lower ends
frames and more particularly to water-cooled of the leg 5 and member I2.
furnace door frames of the character employed
A plate '23' is prcvided to cover the lintel por
in open hearth furnaces and the like.
tion of the conduit I2. This plate extends from
The present invention represents an improve
a point adjacent the side of leg 4 and terminates
ment -over the invention shown and described in in an upturned portion just short of the center
my United States Letters Patent No. 1,935,853, line of the structure. A similar plate ZI extends
issued November 21, 1933. In the structure illus
from just beyond the centerl line to a point adja
trated in that patent, there is a skeleton frame cent the leg 5. This construction provides open
having two open spaces BV above the furnace ings 22, 23 and 24 leading from the conduit I2
door opening A, two ñuid inlets and one fluid out
into the enclosed bcdy portion 3. If desired,
let. In some installations it is preferred to cool openings may be formed in plates 2t and 2l at
the -whole structure, and the door frame shown suitable intervals.
in my said patent is not as suitable for some in
The body portion is enclosed by plates 25 and
stallations >as the present invention herein de
23, welded to the legs 4 and~5 and to the con
scribed.
duit I2. The upper portions of the leg members
In the accompanying drawing, which illus
and body portion 3 are closed by a plate 21. An
trates the present preferred embodiment of my inlet pipe 28 is provided'through plate 2ï into a
invention:
chamber 29 formed in the upper part of leg It
Figure 1 is a front elevation of the frame;
by plate 3l). The plate 3i) has an opening '3l
Figure 2 is a Vertical section on the line II--II
leading into the leg member. Similarly the
of Figure l, looking in the direction of arrows;
outlet pipe 32 passes through the plate 2l and
and
into chamber 33 formed in the top of leg 5 by
Figure 3 is a horizontal section on the line the plate 34. Plate 35 has-a small hole 35 there
III-_III of Figure l, looking in the direction of in to permit the escape of any vapors or steam
the arrows.
`
which may collect in leg 5 but it is not suñicient
In the drawing there is shown a water-cooled in size to allow any substantial amount of water
door frame which has a body portion 3 forming to pass through. The chamber 33 is connected
the top of the frame, and side members or legs 4 to the hollow body portion 3 by means of an
and 5 extending along the sides of the body por
opening 36 in the sidewall of the leg 5. Leading
tion 3 and downwardly therefrom to the bottom from inlet chamber '29 is a pipe 3l which extends
of the furnace door opening A. Each of the diagonally and downwardly through body portion
legs 4 and 5 has projecting therefrom and at 3 and is connected at 38 to leg 5.
right angles thereto wing plates ‘l and 8, re
As indicated by the arrows in Figure 1, the
35 spectively.
These wing plates bear against the
furnace walls (not shown) when the door frame
is in yposition in the furnace structure.
The side or leg members 4 and 5 are preferably
formed from sheet metal bent as shown in Figure
40 3 and welded at 9 to form an enclosed water
passage. Each of the legs has a re-entrant por
tion I0 to provide guide means for a door II, a
part of which is shown in dotted lines in Figure 3.
I prefer to iorm the wing plates l' and 3 integral
45 with the outside edge of the leg, although the
wing plate may be separately formed and at
tached. Secured to the lower portion of leg
member é is a U-shaped or channel member or
conduit I2 which extends up along the leg ¿l as
50 shown, across the lower portion of body portion 3
forming a lintel I3 and thence downwardly along
the other leg 5. The sides of conduit I2 are
secured to the legs ¿I and 5 as by welding to form
a water-tight joint. The lower ends of legs 4
55 and 5 and associated conduit I2 are closed by
plates I 6 and I5, welded or otherwise secured in
position. Washout plugs I6 and il are located
adjacent the lower ends of the legs 4 and 5, re
spectively. Between the lower ends of leg 4 and
60 member I2 an opening I8 is provided; likewise
water circulation is as follows.
10
15
25
30
Water or other 35
cooling medium is introduced through inlet pipe
28 into chamber 29y from whence some of ’the
:duid passes downwardly through leg 4 through
opening i8 land up conduit I2 lthrough passages
22 and 23 and into body portion 3. The rest of 40
the water from chamber 29 passes through pipe
3l into leg 5 and from thence through kpassages I9
and conduit I2, through the passages 24 and 23
into the body portion 3. A comparatively small
amount passes through opening 35 into outlet
chamber 33. The water from the body portion
3 finally passes through opening 35 into chamber
v33 and is discharged through the outlet 32.
It is apparent that I have provided a struc
ture which is relatively inexpensive to yconstruct 50
and one which
be expeditiously and eco
nomically repaired, should the occasion arise.
The amount of welding in the structure, of the
character I have shown, is reduced to a mini
mum and there is a positive water circulation
throughout all the structure and no dead pockets
can form in which scale and dirt will be lodged,
the presence of which would result in rapid de
terioration of adjacent parts.
While I have illustrated and described the 60
2
2,135,828
present preferred embodiment of my invention,
legs to said conduit adjacent the lowermost ends
it is to be understood that it is not limited to the
construction which I have shown and described,
but it may be otherwise embodied within the
scope of the following claims.
of the legs, an opening from said conduit to the
body portion at the latter’s lowermost portions, an
opening from the conduit to the body portion
adjacent the lower center portion of the body
I claim:
portion, an outlet chamber in the top of one leg
1. A hollow water-cooled furnace door frame» and separated therefrom by a plate, an opening
comprising a hollow body portion at the'top of
the frame, two hollow legs forming the sides of
10 the frame, a conduit extending along part of the
legs and between them to form the bottom of the
body portion, an opening from each of said legs
to said conduit adjacent the lowermost ends of the
legs, an opening from said conduit to the body>
15 portion at the latter’s lowermost portions, an
opening from the conduit to the body portion ad
jacent the lower center portion of the body por
tion, a fluid inlet connected to one leg and a fluid
outlet connected to the body portion.
2. A hollow water-cooled furnace door frame
comprising a hollow body portion at the top of
the frame, two hollow legs forming the sides of
the frame, a pipe connecting the legs through the
body portion, a conduit extending along part of
the legs and between them to form the bottom of
the body portion, an opening from each of said
legs to said conduit adjacent the lowermost ends
of the legs, an opening from said conduit to the
body portion at the latter’s lowermost portions,
from the body portion to the outlet chamber and
a fluid outlet passage connected to the outlet
chamber.
.
comprising a hollow body portion at the top of the
frame, two hollow legs forming the sides of the
frame, a pipe connecting the legs through the
body portion, a conduit extending along part of 15
the legs and between them to form the bottom of
the body portion, an opening from each of said
legs to said conduit adjacent the lowermost ends
of the legs, an opening from said conduit to the
body portion at the latter’s lowermost portions, 20
an opening from the conduit to the body portion
adjacent the lower center portion of the body por
tion, an outlet chamber in the top of one leg and
separated therefrom by a plate, a vent in the
plate, an opening from the body portion to the
outlet chamber and a fluid outlet passage con
nected to the outlet chamber.
'7. A hollow water-cooled furnace door frame
portion, a ñuid inlet connected to one leg and a
comprising a hollow body portion at 'the top of
the frame, two hollow legs forming the sides of
the frame, a UV-shaped open sided conduit extend
ing along the lower part of each leg and secured
fluid outlet connected to the body portion.
thereto in such a manner that one side of the leg
30. an opening from the conduit to the body portion,
adjacent the lower center portion of the body
3. A hollow water-cooled furnace door frame
comprising a hollow body portion at the top of
the frame, two hollow legs forming the sides of the
frame, a perforate plate near the upper part of
closes the open side of the conduit adjacent there
to, said conduit extending across the lower part
of the body portion to form a lintel, a plate clos
ing the open side of the conduit between the legs,
one leg and extending across it to form a cham
Vsaid plate having openings therein extending
ber, a fluid inlet pipe connected to the chamber,
a pipe extending from
the chamber to the other
40 L
_
leg, a conduit extending along part of the legs and
between them to form the bottomof the body
portion, an opening from each of said legs to said
conduit adjacent the lowermost ends of the legs,
an opening from said conduit to the body portion
at the latter’s lowermost portions, an opening
from the conduit to the body portion adjacent the
lower center portion of the` body portion, and a
fluid outlet connected to the body portion.
50.y 4. A hollow water-cooled furnace door frame
- comprising a hollow body portion at the top of the
frame, two hollow legs forming the sides of the
frame, a perforate plate near the upper part of
one leg and extending across it to form a cham
55. ber, a fluid inlet pipe connected to the chamber,
a pipe extending from the chamber to the other
leg, a conduit extending along part of the legs
and between them to form the bottom of the
body portion, an opening from each of said legs
to said conduit adjacent the lowermost ends of
the legs, an opening from said conduit to the
body portion at the latter’s lowermost portions,
an opening from the conduit to the body portion
adjacent the lower center portion of the body por
65 tion, and a discharge outlet connected to the 'up
per end of the body portion.
5. A hollow water-cooled furnace door frame
comprising a hollow body portion at the top of
the frame, two hollow legs forming the sides of
the frame, a pipe connecting the legs through the
70 body portion, a conduit extending along part of
the legs and between them to form the bottom
of the body portion, an opening from each of said
10
, 6. A hollow water-cooled furnace door frame
30 __
from the conduit to the body portion, an opening
from the bottom of each of said legs to said con
duit, a fluid inlet connected to one leg and a fluid
outlet connected to the body portion.
8. In a water cooled furnace door frame, spaced
apart hollow legs extending from the top tothe
bottom'of the frame, a conduit extending along
part of the legs and between them to form a
lintel, an opening from each of said legs to said>
conduit adjacent the lowermost ends of the legs,
a hollow body portion between said legs and ex
tending from the top of the frame to the lintel, '
said conduit having openings from the lintel por
tion extending to the hollow body portion, a fluid
inlet at the top of one of said legs and a fluid
outlet connected to the hollow body portion ad
jacent the top of the other leg.
9. v In a water cooled furnace door frame, spaced
apart hollow legs extending from the top to the
bottom of the frame, a conduit extending along
part of the legs and between them to form a
lintel, an opening from each of said legs to said
conduit adjacent the lowermost ends of the legs,
a hollow body .portion between said legs and ex
tending from the top of the frame to the lintel,
said conduit having openings from the lintel por
tion extending to the hollow body portion, a pipe
connecting the legs and extending through the
body portion, a fluid inlet connected to the top
of one leg and an outlet chamber in the top of the
other leg, said chamber being connected to the
top portion of the‘hollow body portion and to a
fluid outlet.
LAWRENCE R. MCAFOOS.
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