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Патент USA US2408583

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Oct. l, 1946.
H. E. RosEBRoYoK ET'AL
REFRIGERATOR
Filed Nov. 5, 1942
2,408,582
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z'sheets-sheet 2l
Patented Oct. 1, 1946
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OFFICE
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2,408,582-l " Ä
REFRIGERATQR; ¿
Homer
Rosebrook andA Herschel,
Powell,4
G‘rreenville,> Mich., assignoiìs§ïbymesne assign-j
ments,Y to, Gibson „Refrigerator“ Company,
Greenville, Mich., a corporation of _Michigan
yApplication November 5, 1942,ser`ià1'N0.,4e4,6o8
1o'oiaims'. (c1. '62;103)
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This invention relates to refrigerators and more
particularly to the provision of separatefreezing
.
shown in Figure 1, taken on substantially the
.
As is well known, different temperature and
humidity conditions are required for the proper
preservation of the Various foodstuffs and -other
line`2--->2 thereof;>
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Figure `3 is an enlarged sectional view taken
articles commonly placed in a refrigerator by the
user thereof;
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interior of the storage chamber;
.
` Figure 2 is a vertical section of the refrigerator
and chilling and cooling compartments within
the storage chamber.
2
the 'storage chamber door removed to show the
For example, a freezing tempera- Y
turejis required for the production of ice cubes; 10
a,temperatureïconsiderably above freezing is re
quiredí for the preservationof ordinary food
stuiîs; and atemperature only slightly above
on the-line
Figure 4
on the line
«l Figure<5
3-3 of Figure 1.;_>
isvan enlarged >sectional View taken
4.--4> of Figure 1; and
isl .anl enlarged sectional view taken
onthe line 5-5‘of Figure 1.
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The refrigerator shownin the accompanying
drawings includes 'an inner shell or liner I0
which'deñnes a storage chamber, an outer shell
I I surrounding the inner shell in spaced relation,
insulation I 2 between the two shells, and a break
er strip I3 which spans the space between the
freezing with relatively high humidity. is best
suited for the chilling and preservation of salads,
desserts and certain meats; -
-Where a single evaporating unit is employed,
difficulty has been experienced heretofore in ob
taining the diiferent temperatures and humidity
free edges of the shells and defines a door open
conditions required for freezing, cooling and
ing for the storage chamber. An insulated door
i4 .for closingthe door opening is secured to the
chilling. »Itis the principal object ofthis in
refrigerator in the V>usual manner.
vention to provide a novel and inexpensive ar
rangement whereby such different conditions can ,
begreadilygobtainedby the use of a single evapo
.. As best shown in Figuresß, 4 and5, the breaker
strip I3 overli'es4 and is secured to the edge por
tionslpf v,tneinner and outer shells by screws I5.
rating unit. This »objectV is attained by dividing
.Í`,A~verticalshield lIii is Vdisposed within the
-storagechamberfand so- arrangedras to vclose the
the 'interior of theÁ storagechamber into a plugl
rality of compartments, disposing lthe refrigerant
Á
upperlportionofrxthe door opening. The_shield
evaporating unit in one of the compartments, and
is of'génerally pan shape including'a flange I‘I
e providing for a limited circulation of air between
across its top, _which is received between the
the several compartments;`
,
.
30 breaker'strip ,ISÀÍand the inner shell I0 and is se
vMore specifically, the principal object of the
cured in position xby. the screws I.5_ (see Figure 5).
shield to'close a portion of the door opening, ar
ranging substantially imperforate. partitions be
Alongfitsy Vertical edges the Vshield is provided with
llanges'flß whichwfare' received between the _edge
of breaker strip' I3 and theinner shell I0 (see
hind the shield to form a pair of spaced compart- „
Figureïßlj."V Acrossv its .bottom edge' the shield is
invention» is attained by . providing a vertical
ments, and placing the refrigerant :evaporating
provided` with~ ay generally kU #shaped irib _I 9 which
lseI'-v.es_„v to strengthen the shield in that region.
unitvin the upperof said compartments. -The
Thus,`fit will'belseen that While the shield ,only
Vertical shield serves to prevent the loss of cold
covers the upper"part of the door opening to the
airmfro'm these compartments when MVthe `refrig
erator door is opened and aids> in controlling and 40 storage chamber, itI does completely -cover that
part', extending ‘to and’being supported by the
directing the now of air within the storage cham
walls „which define _the upper part of the door
ber between andY among the several compart
ments.
It also enhances the appearanceof the
Way.
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' >ASI` previously mentioned, the shield I 6 is of
refrigerator. By providing separate doors in the
45 generallylpan shape, the vvcentral portion being
vertical shield which afford access to each of. 1
disposed'reai'wardly of the perimeter. Substan
the compartments therebehind independently
tially midway between its upper and lower ex
of the other, a more eñ‘ìcient and uniform refrig
Aerating effect is obtained in each of these com
partments.
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Other objects'and advantages of the inven-v
tion will become apparent from the following
description when read in connection with the ac
companying drawings, wherein:
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treßrniti'es the shield is provided with an outwardly
projecting horizontally extending U-shaped rib
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2lb-generally similar tothe rib I9, at the bottomofthe shield. Above the rib 2l)A and in 'spaced
_relationto the „edges of .the shield there ,isppro
vi'o`le‘dfßaA horizontally elongated opening injthe
shield which is' defined by arrearwardly extending
, Figure 1 is a front view of >a refrigerator with 55 ñangeîZI. 4 Between ribsy I9'and20 and‘in'spaced
2,408,582
4
horizontal extent to locate the perimeter thereof
in closely spaced relation to the side walls of the
storage compartment and the shield I6 to provide
relation to the sides of the shield there is pro
vided another horizontally elongated opening in
the shield which is defined by the inwardly ex
for but a limited circulation of air between the
tending flange 22.
The upper opening in the shield I6 is closed by 5 space above and below this partition. The space
between the rear edge of the >shelf and the adja
cent liner wall being greater than the space be
tween the other edges. of the shelf and the ad
jacent vertical walls to aid in directing the cir
a door 23, and the lower opening vis closed by a
door 24. Preferably the doors are formed of glass
or other transparent material and supported by
channel shaped frames 25 and 26. The frames
are connected to the shield IS by hinges as shown 10 culation of air between the spaces above and be
low the shelf. While some moisture may collect
whereby the doors may be swung outwardly about
on the under surface of pan 33, such will not be
a pivot line along the bottom edge thereof (see
the case with `shelf 34.
Figure 3). Adjacent their upper edges the doors
' Partition 34 forms with the liner I0, the par
are provided with handles 21 and 28 respectively.
The shield I@ together with the doors 23 and 24 15 tition 33 and the shield _I3 a chilling compart
ment immediately below the freezing compart
form a substantially imperforate vertically ex
ment to which access is had through door 24.
tending partition across the upper part of the
The remainder of the storage chamber below the
door opening which serves as an auxiliary closure
partition 34 constitutes a cooling compartment,
for that part of the opening.
Behind the shield I6 and in the uppermost part 20 and is provided with conventional shelves 35
formed to provide for circulation of air between
of the storage chamber there is located a refriger
the lseveral spaces defined thereby. Access is had
ant evaporating unit comprising a generally tu
to the cooling compartment by opening the main
bular shell 2.9 and an evaporator coil 3U secured
refrigerator door I4.
to the outside of the shell. The evaporating unit
From the foregoing description it will be ap
is secured in place in a conventional manner by 25
parent that the single evaporator will maintain
hangers extending downwardly from the top of
the freezing chest itself at a lower temperature
the liner IU. The evaporating unit is substan
than the remainder of the storage chamber; that
tially coextensive with the horizontal cross-sec
he chill compartment (the space between pan
tion of the storage chamber and is so arranged
that the front and open end of shell 29 is aligned 30 33 and shelf 34) by reason of its close proximity
to >the evaporator and the limited circulation of
with the opening in the shield I6 which is closed
air between that space and the space occupied
by the evaporator, will be maintained at a tem
by door 23. Thus, access may be had to the in
terior of shell 29 for the installation and removal
of >freezing trays or substances to be frozen.
perature only slightly above freezing; and that
Liquid refrigerant is supplied to the evaporator 35 the food storage or cooling space below the shelf
34 will be maintained »at atemperature somewhat
coil 3_0 by a capillary tube 3| and gaseous re
higher than that of the remainder of the storage
frigerant is withdrawn from ‘the evaporator coil
chamber by reason of the fact that the circula
tion of air between the space above and below
Below the evaporator and in closely spaced re 40. the shelf is restricted. Furthermore, it will be
apparent that by reason of the different temper
lation thereto 4,is a drip pan 33 in the form of a
atures prevailing in the different spaces the rela
substantially „imperforate partition. Pan 33 has
tive humidity in the chilling compartment (the
upturnedflanges about its perimeter and is of a
space between shelf 34 and pan 33) will be rela
horizontal extent sufficient to collect moisture
through a suction line 32 in a conventional man
ner by >a condensing unit, not shown.
t-iveiy higher than the humidity in the cooling or
storage
`compartment comprising the space be
ing. Thus, the rpan 33 is also substantially co
low partition 34. Thus, merely‘by the use of -a
extensive horizontally with the cross-section of
novel arrangement of partitions and _baffles it is
the storage chamber.
possible
to obtain different temperature and dif
.Pan 33 `is supported _at the >frontby connection
with the >evaporator and at the rear by a support 50 ferent humidity conditions _within separate zones
of a refrigerator storage compartment by means
secured to the. liner. The pan is preferably in
of a single refrigerant evaporator located in but
clined downwardly from the front to the rear and
4Ul
which Ydrips from the evaporator during defrost
one -of said zones.
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is provided with a small opening (not shown) at
The scope of the invention is indicated in the
the lowest point to drain off the moisture col
lected therein into any suitable receptacle. This 55 appended claims.
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inclination also serves to promote the circulation
We claim:
of air along a predetermined pathway. `Provision
1. Avmechanical refrigeratorcomprising a stor
age chamber, a `refrigerant evaporator disposed
is made for the >limited circulation of ,air lbetween
in the chamber, a drip pan disposed below and in
the space above and below the pan 33 by the
slight spacing of the yedges of the pan from the 60 closely spaced relation to the evaporator lfor col
lecting the drip from the evaporator, a substan
liner walls. In order to increase the Ycirculation
tially imperforate food storage shelf positioned
of air between these two spaces it may also be
below vand in spaced relation to the drip pan, said
desirable to provide the pan 33 with `an opening
pan and said shelf being constructed and ar
33a toward the front thereof. The opening 33a
is surrounded'byan upstanding flange to prevent 65 ranged in relation to the storage chamber to pro
Vide ypassageways adjacent the perimeters there
the moisture .collected in the pan from dropping
of for a limited >circulation `of Vair between the
through this_opening, -Also, the pan is preferably
spaces thereabove and therebelow, the cross .fsee
provided with an upstanding baille 331) over the
tional area of the passageway for the circulation
opening to prevent the moisture .which drips `from
the evaporator during defrosting `from falling 70 of air adjacent one portion of the perimeter of
through the opening.
the ,shelf being larger than the cross sectional
area of the passageway adjacent the vcorrespond
_
_Positioned below _the drip vpan 33 is a horizon
tally extending irnperforate shelf in the form of
a .partition '34 which issupported from the ‘liner
ing portion of the perimeter o_f the _drippan, and
,
the cross sectional area of the lpassageway adja
bv the usual shelf supports. Partition 34 is 0f a 75 cent another and remote portion of the perimeter
É
of the shelf being smaller than the cross sectional
area of the passageway adjacentthe correspond
ing portion of the perimeter of the drip pan. _
2. A mechanical refrigerator as defined in
claim 1 wherein the storage chamber is provided
with an access opening and wherein means are
provided closely adjacent the edge of the shelf
nearest the access opening for restricting the
circulation of air between the access opening and
the space above the shelf.
3. A mechanical refrigerator as defined in
claim 1 wherein said storage chamber is provided
with an access opening, a door for closing the
access opening, and means in addition to the
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8. A mechanical refrigerator comprising a
storage chamber having an access opening, a re
frigerant evaporator disposed in the chamber, a
drip pan disposed below and in closely spaced
relation to the evaporator, said drip pan being
constructed and arranged in relation to the stor
V age chamber to provide for limited circulation of
air between the spaces thereabove and therebe
low, a substantially imperforate food storage shelf
positioned below and in spaced relation to the
drip pan, said shelf being constructed and ar
ranged in relation to the storage chamber to pro
vvide for a limited circulation of air between the
spaces thereabove and therebelow, and vertically
door and located closely adjacent the edge of the 15 arranged shield means `interposed between the
shelf nearest the access opening for restricting
circulation of air between the access opening and
-access opening and the space above the food
access opening.
stantially imperforate partitions intermediate the
storage shelf to restrict circulation of air be
the space above the shelf.
tween the access opening and said space and be
4. A mechanical refrigerator' as defined in
tween the spaces above and below the shelfin
claim l wherein the storage chamber is provided 20 the zone adjacent the access opening, said drip
with an access opening, a door for the access
pan being constructed and arranged to collect
opening, and a shield interposed between the ac
drip from the evaporator and from the upper
cess opening vand the space above the shelf ar
portion of said shield means.
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ranged closely adjacent the edge of the shelf
9. A mechanical refrigerator comprising a
nearest the access opening to cooperate with the 25 storage chamber divided into an upper compart
shelf to restrict circulation of air between the
ment, an intermediate compartment, and a lower `
spaces above and below the shelf adjacent the
compartment by a pair of vertically spaced sub
5. A mechanical refrigerator comprising a stor
age -chamber having an access opening, a refrig
30
erant evaporator disposed in the upper part of ,
the storage chamber, a drip pan disposed below ,
and in closely spaced relation to the evaporator, Y
top and bottom of the chamber, said partitions
forming the top and bottom walls of the inter
mediate compartment, an evaporator in the upper
compartment, said intermediate compartment
having an aperture in the top adjacent a hori
zontal extremity thereof and within the vertical
in relation to the storage chamber to provide for 35 projection of the evaporator for the passage of
said drip pan being constructed and arranged
a limited circulation of air between the spaces
air from the upper compartment to the inter
thereabove and therebelow, a substantially im
mediate compartment, said compartment having
perforate food storage shelf positionedbelow and
another aperture at the perimeter thereof remote
in spaced relation to the drip pan, said shelf be
from said first mentioned aperture for the pas
ing constructed and arranged in relation to the 40 sage of air from the intermediate compartment
storage chamber to provide for limited circula
yto the lower compartment.
tion of air between the spaces thereabove and
10. A mechanical refrigerator comprising a
therebelow, and vertically arranged means in
chamber, an evaporator disposed in said cham
terposed between the access opening and said drip
ber, a drip pan disposed below and in spaced re
pan and said shelf to cooperate therewith to re 45 lation to the evaporator and arranged to collect
strict the circulation of air between the access
the drip therefrom, and an imperforate shelf dis
opening and the space above the shelf and be
posed below the drip pan and in spaced relation
tween the spaces above and below theshelf in
thereto, said shelf and said drip pan being sub
the zone adjacent the access opening. `
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stantially coextensive horizontally with the cham
6. A mechanical refrigerator as deiined in 50 ber, said drip pan being constructed and ar
claim 5 wherein said means interposed between
ranged in relation to the chamber walls and the
the access opening and the drip pan and the shelf
Vevaporator to provide an air passageway adja
comprises a shield which-is itself provided with
cent one edge thereof substantially within the
movable portions affording access to the space
vertical projection of the shelf, said shelf being
above the drip pan and to the space between the 55 constructed and arranged to .provide an air pas
drip pan and the shelf, respectively.
sageway adjacent one edge thereof located at
7. A mechanical refrigerator as defined in
least partially within the vertical projection on
claim 5 wherein the drip pan is provided with an
said drip pan, whereby to permit the circulation
opening adjacent one edge thereof for the circu
of air horizontally through the space between the
lation of air between the spaces thereabove and 60 Vshelf and the drip pan.
therebelow which opening is surrounded by a Y
HOMER E. ROSEBROOK.
flange of lesser height than the sides of the pan.
HERSCI-IEL F. POWELL.
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