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Патент USA US2131680

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Sept. 21, 1938..
Filed Feb. 5, 1934
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Patented Sept. 27, 1938
' Victor E Zah'odiakin, Cincinnati, Ohio,
‘ to The Orosiey Radio Corporation, Cincinnati,
Ohio, a corporation of Ohio
Application ream s, 1934, Serial No. 109,103 ‘
4 Claims- (Cl. 82-89)’
This invention relates to refrigeration,
Apart from the ‘main objectives set forth it is
. particularly directed to an improved refrigerator , the further object of this invention, and a pre
construction embodying an auxiliary food com
ferred embodimentof theinvention, to provide a I
double-door arrangementfor the cabinet. That
is to say, to provide super-imposed doors, and to .5
include the auxiliary food compartment between
The e?iciency of the ‘average refrigerator is
greatly decreased because of the factthat the
these doors, whereby the user can either open an
outer door giving access to the. space between the
doors in which the food is most accessibly stored, ’
or can open the door unit as ‘an entirety for the 10
door is being opened constantlyfor the purpose
of removing food and ‘ice therefrom. Through
out the day in ordinary home use the door is
m opened dozens of times and it is dimcult to esti-i
purpose of access to the main cooling compart
, mate the actual loss in e?iciency and the added
cost of operation.
ment of the refrigerator.
ment between the doors is visible from the ex-'_ 15 _ '
terior, and wherein fruits and other attractive
foods may be stored therein for display purposes.
Other objects and certain advantages will be
more fully apparent from a description of. the
accompanying drawing, in which:
protracted periods of time‘forlowe'ring the tem
perature, but the e?iciency of the refrigerator in
go preserving the food therein is lessened because
' Figure 1 is a perspective view of the improved
of temperature ?uctuation.
An additional disadvantage resulting because
refrigerator of this invention.
of the admission of moisture laden outside air
into the food compartment is that a great deal of
25 frost is produced about the refrigeration unit.
The moisture coming in when the door is opened
continues to accumulate in the form of layers of
.frost on the unit until this accumulated frost
creates a shell of ice around the unit, greatly
3o lowering its efliciency.~
ent outer door, whereby the auxiliary~compart
deal more than the normal estimated time of op
“ eration in order to keep the food compartment
‘at the proper temperature. Not only must the
refrigeration unit operate oftener and over more
A still further object is to provide a transpar
The refrigeration unit must operate a great
»' -
It is the object of this invention to provide a
refrigerator wherein uniform low temperature is
maintained in the food compartment the greater
part‘ of the time. This result is accomplished by
Figure 2 is a perspectiveview of the improved _
refrigerator of this invention showing the auxiiiary door open foraccess to the food in the com- 25
partment between the doors.
Figure 3 is a sectional view taken on line 3-3,
Figure 1, illustrating in detail the relation of the
doors, the auxiliary food compartment, and the
operating mechanism for controlling communica- 30
tion between the main compartment and the aux- . '
iliary compartment.
Described in general, the apparatus incorpo
rates an insulated body structure 4 providing a
35 the use of an auxiliary compartment for food, main food compartment 5 in which the cooling 35 '
6 is mounted, a composite door structure 1
to which compartment access may be had with unit
involving super-imposed doors, one door 8 being I
out opening the main compartment. According
the main door for the main food compartment,
ly,the air in the main compartment does not es
and the other door 9 being an auxiliary door pref
cape when the user is removing food from the erably mounted on the main door. Between 45'
auxiliary compartment; This obviously reduces» these doors a storage space It is provided by ap
materially the cost of operation, gives greater
convenience, requires less defrosting, and greatly
increases the space available for storage.
It is also the object of this invention to pro
vide for automatically opening and closing com
munication between the main food compartment
and the auxiliary food compartment, whereby
when the auxiliary food compartment door is
propriately recessing or adjacently bulging out
the doors over the greater portion thereof. Al
though the auxiliary food compartment is most
advantageously placed in the main door struc- 45
ture, it will be apparent that it could be at any '
other place ,on the refrigerator.
It will ‘be apparent that detailed description
of the general refrigerator construction is un
necessary, so that the present description will be 50
opened the communication or circulation between
59 compartments ceases, and when the door is closed, , detailed only as to the door structure. The door
communication ‘is openedbetween the compart-' opening ll of the refrigerator is conical or ta
ments and cooling circulation takes place at once. pered inwardly and incorporates the conven
In other words, provision is made for automati-~ tional breaker strip I2. The door 8. is ?tted into
cally controlling circulation through the auxiliary this conical or tapered opening and is of consider,- 55 '
u compartment.
able thickness for this purpose. This door in
cludes the usual hinges l3 mounting it on the
cabinet and an over-hanging ?ange portion l4
lying against the front of the refrigerator mar
ginally about the opening. A sealing strip [5 is
mounted on this ?ange for contact with the mar
gin of the opening.
It is believed unnecessary to describe in detail
the insulated nature of the doors. It suffices
10 to state that they are fabricated of a metal cov
ering or shell l6 over some preferred insulation,
indicated at H.
In the instance of the main door 8, it is pro
vided with a hollow interior or a depressed por
tion forming, in the present embodiment of the
invention, the major partof theauxiliary food
compartment III. For this purpose the door may
be said to incorporate a heavy frame or margin
» portion [9, the metal shell of which is extended
back on the inside of the frame as at 20 against
the metal rear wall 2| of the door. As shown in
Figure 3, the wall of the main door adjacent the
auxiliary compartment, or between the auxiliary
compartment and the main food compartment,
consists of a metal plate 2| of heavy gauge for
?at against the inner face of the door, and over
the openings. It will be noticed that valved pas
sageways are provided at the .top and bottom of
the compartment respectively for the purpose of
circulation, vertically of the chamber, such as is
normally induced by the refrigeration unit of the
These valves are operated by means of operat
ing pins 31 fixed on the inner side of the auxiliary
door and projecting inwardly for traversing the
valved openings. When the‘ auxiliary door is
shut these operating pins traverse the openings
and hold the valves in open position. When the
door is open the pins are withdrawn from the
valved openings and the‘valves close, sealing the 15
portunity for loss of cold air therefrom while food
is being removed from the auxiliary compart
main food compartment so that there is no op
Both food compartments are provided with 20
food racks 38 in the conventional manner. In
the instance of the auxiliary compartment these
food racks are shown as secured to the heavy
metal rear wall of the main door so that they
need not be swung with the auxiliary door when
it is opened.
In operation it is quite convenient for the
housewife to open the auxiliary door since it is a
smaller door, and this can be done a great many
The auxiliary door 9 is mounted over the re
cessed portion of the main door, and is mounted
on the main door by means of hinges 23 adjacent
the ?rst mentioned hinges. This outer door in
times, or as often as preferred, without decreas
cludes a bulged-out portion 24 adjacent the food -' ing the e?iciency of the refrigerator as much as
compartment for enlarging the same and a mar- _ if the main door to the food compartment were
ginal ?ange 25 lying against the main door opened. When it is desired to have access to the
around the margin of the auxiliary food compart
ment it. A sealing strip I5 is mounted ‘on this
?ange for contact with the margin of the open
ing. The bulged portion shown incorporates a
?at forward wall and includes inclined connecting
wall portions 26 extending to the mentioned over
hanging ?ange 25.
This fiat forward wallmay be transparent'for
the purpose of displaying the food stored in the
main food compartment of the refrigerator the
doors are swung as a unit, that is to say, the
auxiliary food compartment is in no way a?'ected.
It simply swings as a part of the composite door
Having described my invention, I claim:
1. A refrigerator comprising a cabinet hav
ing cold producing means, situated therein which 40
auxiliary compartment, whereby the housewife is
causes a- circulation of air therein, a double door
able to ascertain at a glance the nature of her
45 food supply in the auxiliary compartment, or
to said cabinet and comprising an inner and an
whereby if desired, attractive foodstuffs may be
conveniently displayed. For the purpose of this
transparency a double wall is provided, that is to
say, spaced sheets of glass 21 are mounted in
50 an opening 28 in the forward wall provided for
this purpose. A spacer and sealing strip 29 is
secured around the inner edge of the window
opening and removable attachment strips 30
hold the glass in position against the respective
55 sides of the strip 29. The double wall provides
an insulation space.
The doors have independent latches, consist
ing in the case of the main door, of a'swinging
arm 3| pivoted onthe main door and dropping
60 into position in a clasp element 32 secured on the
refrigerator structure, and in the case of the aux
iliary door of the same structure with the attach
ing bracket or clasp element 32 mounted on the
main door.
Now referring speci?cally to Figure 3, it will be
observed that an automatic valve arrangement
is incorporated for controlling circulation or com
munication between the respective chambers.
For this purpose there are horizontally elongated
70 openings 33 in the sheet metal wall 22 of the
main door, that is to say, between compartments.
Plate valves 34 are mounted on the inner side
of the door.
These plate valves are secured in
position on hinges 35. The hinges incorporate
75 spring means 36 for normally holding the plates
assembly hinged for swinging movement relative
outer door, said inner door being shaped to pro
vide an auxiliary food compartment and having 45
a non-insulated vertical inner wall with ports
therein, said ports providing means to permit air
circulation within said auxilary food compart
ment from the cabinet, said ports being provided
with ~valves which are normally closed when
said outer door is opened, and said outer door
being provided with means to open said valves
when said outer door is in closed position.
2. In a refrigerator, the combination, with a
casing having a cooling compartment and pro
vided with an opening in one wall forming the
entrance to said compartment, of a structure
normally arranged in said opening for closing the‘
same, said structure comprising an auxiliary
compartment and a door therefor, louver means
movable out of and into parallelism with the
normal position of the door to place said com
partments in communication and to interrupt
'such communication respectively, means tending
to swing the louver means to the second named
position and means operated bythe closing of
said door for swinging the louver means to the
?rst named position.
‘3. In a. refrigerator, the combination, with a
casing having a cooling compartment and pro 70
vided with an opening in one wall forming the
entrance to said compartment, of a structure
normally arranged in said opening for closing
the same, said structure comprising an auxiliary 76
compartment and a door therefor, louver means
movable out of and into parallelism with the
behind the other for forming the front and rear
walls of an auxiliary compartment at the front
partments in communication and ‘to interrupt
prising louver means movable into parallelism
with the normal closed 'position of the front
closure, when the latter is open, and means
operated by the closing of the front closure for
moving the louver means out of such parallelism.
normal position of the door to place said com- - of said food compartment, the rear closure com
such communication respectively, and means op
eratedby the closing of said door for swinging
the louver means out of such parallelism.
4. In a refrigerator, the combination, with a
casing having a food compartment, of a struc
10 ture comprising ‘a pair‘ of closures arranged one
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