close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3051166

код для вставки
Aug. 28, 1962
w. R. KIMBERLEY
3,051,158
VENTILATING SYSTEM FOR A COOKING OVEN OR THE LIKE
Filed ‘Nov. 5. 1960
4 Sheets-Sheet 1
1716721 _
W
X l35
90% 62441
4 rro?nas ya.
Aug. 28, 1962
w. R. KIMBERLEY
3,051,158
VENTILATING SYSTEM FOR A COOKING OVEN OR THE LIKE
Filed Nov. 5, 1960
4 Sheets-Sheet 4
FIG‘; 4‘
31
40
'
I
40
1/
'
I
'
I
l
:
“I
'
-
i
':' 176
I
:
I
‘I!
/
I
‘I,
Q
-
I
. X
.ll ,_
1::
2"
3515
59
\
.
'
1/
"l
11
_é/
‘.
7:
t
40;
l
_/
'22
45
M
‘9
E
l
1::
f
/
l
..._“/
.
55:
2
as?
..|
i
T’
5
40,
.
¢
i
m/
__I
'22
'
‘r
--5
T
:
'.
M4
i
if
f1
40$
a5
a?’
/,
v
E
__;
I!
?
=
q'T'
;:
4
I
1
7“?
I’
_
18 ‘6
1
1'
;
‘
/
Y
10
/'
j 1b’
x
=;_:/
i
16
.
\_ v‘ IN’VEN TOR.
?hlfzr??m?erlqy
W62]: 6L1
Patent
United "
ICC
1
3,051,158
Patented Aug. 28, 1962
2
at 22 and 23 so as to be swingable downwardly to open
3,051,158
VENTILATING SYSTEM FOR A COOKING
OVEN ()RTHE LIKE
Walter R. Kimberley, Signal Mountain, Tenn., assiguor to
Samuel Stamping & Enameling Company, Chattanooga,
Tenn., a company of Tennessee
Filed Nov. 3, 1960, Ser. No. 66,998
2 Claims. (Cl. 126-221)
position.
The door 20 of the upper or cooking chamber is of
usual construction and is recessed as at 24 along the
rear of its top edge. Extending crosswise of the space
25 between the casing top 14 and the partition ‘16 at the
front of the casing is a front wall 26 having in the lower
portion thereof a transverse opening 27 into which a
?lter 28 is set. Wall 26 extends somewhat below said
This invention relates to a ventilating system for a 10 partition ‘16 and is offset rearwardly as at door frame
cooking oven or the like.
29 in complementary spaced relation to the recess 24
The chief aim of my invention is to provide a simple
along the top edge of the door 20 with consequent pro
and reliable oven ventilating system by means of which
vision of a narrow interval 34) for escape of vapors from
vapors from the chamber of an oven may be channeled
the upper chamber 18 when door 20 is closed. As further
, directly to a ?ue for evacuation under natural draft 15 shown, the top edge of the door 20‘ is overreached by
conditions or may be conducted into the ?ue by mechani
a hollow de?ecting hood 31 which is open to the at
cally induced forced draft, as may be desired or deemed
mosphere at the bottom and suitably a?ixed transversely
necessary during use of the oven.
of the‘ front of the casing. Above the hood 3-1 is a con
It is a further object of.my invention to provide a
trol panel “76 on which are mounted a gas off-on and
ventilating system for cooking ovens whereby the door
temperature control 71, a bank of switches 72, and a
of the cooking chamber may remain closed during the
broiling or roasting of foods therein.
A further object of my invention is to provide a
ventilating system for cooking ovens and the like having
timer 7'3.
'
Disposed in the space 25 is element 35 which, as shown
in FIGS. 1 and 4, has spaced side walls 36‘, 37, a trans
verse back wall 38 and a top wall '39. The element 35
a natural draft ventilating system and a forced draft
is ?xedly secured to the partition 16 by means of screws
ventilating system, wherein either of said systems may
40 whereof the shanks are passed through. outwardly
be operated selectively, and wherein operation of the
directed ?anges along the bottom edges of the walls 36,
forced draft system automatically closes olf the natural
37 and '38, and threadedly engage into said partition.
draft system.
As a result of this construction, there is provided in the
Brie?y described, the ventilating system of my in 30 space 25 immediately above the partition 16 a horizontal
vention comprises a duct which is in communication
duct 41 which extends rearwardly from the front of the
with the cooking chamber of the oven and in communi
casing ‘10 substantially throughout the depth of the
cation, through an opening, with the ?ue; a damper for
same. Duct 41 is in communication with the atmos
said opening normally biased to open position to per
phere through filter 28 and the hollow of hood 31.
mit vapor evacuation under natural draft conditions; a 35
Adjacent its rear end wall 38, the top 39 of the element
35 is provided with an opening 42 and, somewhat for
a blower fan interposed in the by-pass and operative,
when started, to force the damper into closed position
ward of said opening, with a second opening 43. Super~ v
posed upon the element 35 within the space 25 and over
the opening 42 is an inverted, hollow, box~like element
44-, which is made fast by screws 45- (FIG. 1), and pro
by-pass extending from the duct and connecting into
the ?ue beyond the opening aforesaid in the duct; and
over the opening in the duct so that the oven vapors will
be vacuated under'forced draft via said by-pass into
the ?ue.
Other objects and attendant advantages will appear
from the following detailed description of the attached
drawings, wherein:
FIG. 1 is a broken out perspective view of an oven
embodying the ventilating system of my invention;
FIG. 2 is a side elevation of the oven drawn to a
larger scale with the upper portion thereof in vertical
vided, in turn, with an opening 46 in its top, the latter
opening being flanged as at 47 for connection of a ?ue
pipe 48 (FIG. 3). Pivoted at 49 with the box~like ele
ment 44 and adapted to close down over the opening
412 is a damper 50 (which is separately illustrated in
'FIG. 6), and which is provided with a counterweighted
arm 51 whereby it is normally biased to_ open position,
as shown in full lines FIGS. 2 and 5, and in broken lines
in FIG. 3. The box-like element 44 also has a lateral
section, and showing the ventilating system in oper
opening 52 which, through a by-pass ?tting 55, is in
ation under normal natural ?ue draft conditions;
FIG. 3 is a fragmentary view corresponding to FIG. 2
communication with the opening 43 in the top of the
element 35. From FIGS. 1 and 4 it will be noted that
the by-pass ?tting 55 has a lateral substantially circular,
hollow offset 56 which is occupied by a rotary blower
fan 57 arranged to be driven by an electric motor 58.
When blower fan 57 is in operation, its discharge pres
sure is su?icient to close damper 50 against its counter
weight. Thus, natural draft ventilation is shut off when
forced draft ventilation is used.
showing the ventilating system in operation under forced
draft;
FIG. 4 is a staggered horizontal section, with areas
partially broken away, taken as indicated by the angled
arrows IV——IV in vFIG. 3;
FIG. 5 is a fragmentary detailed section taken as in
dicated by angled arrows V-V in FIG. 2; and
FIG. 6 is perspective view of the damper.
The horizontal partition 16, which comprises the ‘top
60
The cooking oven herein illustrated for convenience
wall of the upper or cooking chamber 18 of the oven,
of exemplifying my invention is of a type adapted to
is provided with an opening 60, thus placing duct 41
be set into a recess in the wall of a building, the same
in direct communication with chamber 13. Shiftable
having a rectangular casing 10‘ of sheet metal with side
over the opening 60 is a plate 61 (FIG. 4) whereof the
walls 11 and 12, a back wall 13, a top 14 and a bottom
lefthand portion is solid and the right hand portion is
15. At a level spaced somewhat below the top 14, the
formed with an aperture 62 spanned by a ?lter screen 63.
interior of the casing 10 is divided by a horizontal par
The plate 61 is a?xed to a lever 64 which is fulcrumed
tition 16, and the space below said partition is subdivided
about a stud 65 set into partition 16 immediately behind
by a horizontal diaphragm 17 (FIG. 2) into' an upper
the ?lter screen .28. Lever 64 extends outwardly beneath
or cooking chamber 18 and a lower chamber 19, said 0 screen 28 and terminates within the hood 6.1. At its
chambers having frontal access doors 20‘ and 21 which
distal end the lever 64 has a pin connected in a slot in
are hinged along their bottom edges, respectively, as
the inwardly projecting lug 66 of a manipulating button
3,051,158
01
‘ID
(i
67 constrained to slide within a horizontal slot 68 in the
a control panel for said oven positioned above said hood,
front of the hood 31 (FIGS. 1, 4).
said substantially wide opening being in communication
with atmosphere at substantially the level of said hori
zontally extending wall, a damper at the outlet from
Operation
To prepare the oven for baking, the plate 61 is moved
to the position in which it is shown in FIG. 4, to bring
the solid portion thereof over the opening 60 in the par
tition 16 to close off chamber 18 from duct 41. The
blower fan 57 need not be used, unless it is desired
said ?rst duct normally biased open, means operable
for controlling said broil vent opening, a second duct
connected between said ?rst duct and fine and bypassing
said damper, and a fan disposed within said second
of the vapors within the oven chamber are withdrawn,
via the passage 30, over the top of the door 20‘, and
through hood 311, ?lter 2,8 and the duct 31, wherefrom
they escape into the ?ue 43 via either opening 42 or
terior of said ?rst duct via said opening over the closed
door, said hood and said open end of the ?rst duct
when said broil vent is closed, said ?rst duct being vented
to atmosphere via said ?ue by natural draft when said
fan is off and via said bypass duct and ?ue when said
duct and operable for closing said damper against the
to cool the outside of door 20 by drawing air through 10 influence of said bias, said compartment being vented
to the interior of said ?rst duct principally via said broil
hood 311, ?lter 28 and duct 41 to ?ue 48. Under these
vent when the same is open and being vented to the in
conditions, as the baking proceeds, only a small portion
opening 143, depending on whether fan 57 is in operation.
When the oven is to be used for broiling or roasting,
the plate 61 is shifted to bring its screened aperture 62
into position over the opening 60 in the partition 16,
fan is on.
2. In a domestic cooking appliance, the combination
comprising an oven, and a ventilating system for said
oven, said oven including walls providing a compart
ment, at door closing said compartment, there being a
placing chamber 18 in communication with duct 41.
Preferably, the blower 57 now is utilized. Upon start
substantially wide opening extending across the top of
ing the blower 57, the blast therefrom acts upon the
said closed door and placing the interior of said com
damper 50 and forces it to closed position over the open
ing ‘4-2 at the inner end of the duct 40, in which position 25 partment in communication with atmosphere, said vent
ing system including a duct extending fore and aft over
said damper remains so long as blower 57 is in oper
said compartment and having an open end at the front
ation. Under these conditions, the vapors are drawn
of said compartment, an upwardly extending ?ue com
out of the oven chamber 18 by forced draft, through
municating with an aft end portion of said duct, said
the ?lter screen 63 over the opening 60 the by-pass 55,
from which they continue into the box-like element 44 30 oven walls including a horizontally extending top wall
portion serving as the bottom wall of said ?rst duct, said
for discharge into the ?ue 43. Thus with the ventilat
ing system of this invention, it is possible to broil or roast
horizontally extending wall portion having a broil open
ing formed therein, a horizontally extending hood co
extensive in length with the top of said door and over
While in accordance with the provisions of the statutes,
I have illustrated and described the best forms of embodi 35 hanging the open end of said ?rst duct, a control panel
for said oven positioned above said hood, said substan
ment of my invention now known to me, it will be ap
tially wide opening being in communication with at
parent to those skilled in the art that changes may be
mosphere at substantially the level of said horizontally
made in the form of the apparatus described without
extending wall, means operable for controlling said broil
departing from the spirit and scope of the invention
as set forth in the appended claims, and that in some 40 vent opening, and a fan operable for inducing a draft in
said ?ue, said compartment being vented to the interior
cases certain features of my invention may be used to
of
said duct principally via said broil vent when the same
advantage without a corresponding use of other features.
is open and being vented to the interior of said duct via
Having thus described my invention, I claim:
said opening over the closed door, said hood and said
1. In a domestic cooking appliance, the combination
open end of the duct when said broil vent is closed, said
comprising an oven, and a ventilating system for said
duct being vented to atmosphere via said ?ue by natural
oven, said oven including walls providing a compart
draft when said fan is off and by forced draft when said
ment, a door closing said compartment, there being a
fan is on.
substantially wide opening extending across the top of
said closed door and placing the interior of said com
References (Iited in the ?le of this patent
partment in communication with atmosphere, said vent
ing system including a ?rst duct extending fore and aft
UNITED STATES PATENTS
foods with the door 20 of the oven chamber 18 closed.
over said compartment and having an open end at the
front of said compartment, an upwardly extending ?ue
communicating with the aft end of said ?rst duct, said
oven walls including a horizontally extending top wall 55
having a portion thereof serving as the bottom wall of
said ?rst duct, said horizontally extending wall portion
having a broil opening formed therein, a horizontally
extending hood coextensive in length with the top of
said door and overhanging the open end of said ?rst duct, 60
567,025
980,471
1,678,730
2,102,352
Ferris ________________ __ Sept. 1,
Zenke ________________ __ Jan. 3,
Johnson ______________ __ July 31,
Bilde ________________ __ Dec. 14,
1896
1911
2,167,047
‘Jackson et al ___________ __ July 25, 1939
1928
1937
2,622,582
Pollock _____________ __ Dec. 23, 1952
2,836,114
Weaver et a1 ___________ __ May 27, 1958
2,889,825
Evans _______________ __ June 9, 1959
Документ
Категория
Без категории
Просмотров
0
Размер файла
549 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа