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Патент USA US2409070

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Cet.. 8, 1946.
H. E. RosEBRooK
2,409,069
REFRIGERATOR
Filed Jun'e 12“, 1941
2 -sheets-sheet 1
/0
///
/3
INVENTOR.
HOME/F ¿î FOSEÖ’E’OO/ë
Get. 8, 1946.
2,409,069
H. E. ROSEBROOK
REFRIGERATOR
Filed June l2, 1941
2 Sheets-Sheet 2
.
`
INVENTOR.
few/5@ E @oaf-@Fang
Patented ‘Jet 8, 1945
¿ragots
UiD SATàÈES PATENT OFFICE
REFRIGERATOR
Homer E. Rosebrook, Greenville, Mich.,y assigner,
by mesn'e assignments, to Gibson Refrigerator
Company, Greenville, Mich., a corporation of
Michigan
1
Application .l une 12, 1941, Serial No. 397,684)
7 Claims. (Cl. (i2-_89)
This invention relates to refrigerators, and more
particularly to the provision of auxiliary com
partments within such refrigerators for the stor
age of butter and other foodstuiîs which it is de
sired to maintain at a temperature higher than
that of the remainder of the articles stored with
in the refrigerator.
The temperature nor-:many maintained within
the main food storage compartment of a refriger
ator is so low that butter kept at that tempera
ture Wili not spread easily. Butter and similar
foodstufi‘s, however, can be properly preserved
at temperatures somewhat higher than those pre
vailing in the main compartment. Hence, it is
desirable to provide inthe refrigerator cabinet
auxiliary compartment which can be kept at
a higher Itemperature than that of the main
compartment, yet sufficiently low to preserve but
ter and the like.
Accordingly, the principal object oi this in
vention is to provide in a refrigerator an aux»
iliary insulated compartment for the storage of
butter and similar foodstuffs.
A further object is to provide novel-means for
2
Figure 7 is a fragmentary cross-sectional View
taken on substantially the line 'l-l of Figure 5.
The invention is shown as embodied in a con
ventional household refrigerator, shown in Fig
ure 1. The refrigerator comprises a cabinet hav
ing an outer casing l0. Within the outer casing
lo and spaced therefrom is a liner H defining a
main refrigerated food storage compartment.
Insulation 24 is packed between the liner H and
the outer casing l0. The main compartment‘is
provided with a door l2. Within the main com
partment is an evaporator I3 for cooling the main
compartment. Shelvesv Mare provided for hold
ing articles to be stored within the refrigerator;
ïn the bottom of the refrigerator’cabinet is a
machinery compartment having an» access door
I5. The machinery compartment-contains a part
of the refrigeration> apparatus which may be of
any conventional type. A condenser I1, »Which-is
connected to, and» forms a part of the refriger
ating system“, is mounted in an upright-position
in the rear' of the back wall of the cabinet. »The
condenser may comprise a continuous coilV of
tubing, such as that shown. A ñue le, open at its
upper and lower ends, enclose's the condenser Il
and is secured to the back of the cabinet l0.
Located within the main compartment is a
conducting heat to the auxiliary compartment
whereby to maintain it at a temperature higher
than that of the main compartment.
Another object of the invention is to improve
housing IB forming an auxiliary compartment.
the eiiiciency of the refrigeration system of re
The housing I8 comprises'a shell I9 having an
frigerators provided with such auxiliary com 30 access» opening therein which is closed'by closure
partments.
2i).V TheY closure 20 is hinged to the shell I9 by
Another object is to provide a combi-ned heat
hinges 2l positioned adjacent to- the lower edge
transfer means andsupport for an auxiliary com
thereof. Both the shell and the closure are pref
partment.
erably formed from a suitable plastic material
These and other objects ancillary vthereto will
which is to a,>A certain extent an insulating'ma
more fully appear in the following speciiication,
terial, 4That is, the plastic material has a col'whenread in connection with the accompanying
efficient of heat'transfer lower than those of the
drawings, wherein:
»
variousV metals", but higher than those'm'ate'i‘i'als
Figure 1 is a iront elevational view of a re
which are commonly called insulating materials.
frigerator of the household type embodying the 40 Thus, when thetemperature Within the auxiliary
invention, the door of the refrigerator being open
compartment is higher than that within the main
to show the interior thereof;
compartment, there will be a relatively slow
Figure 2 is a fragmentary front elevational
transfer of heat from the auxiliary compartment
View on an enlarged scale of the auxiliary com
to the main compartment through thev walls sur
partment;
rounding’ the former.
Figure 3 is a fragmentary cross-sectional view
taken on substantially the line 3_3 of Fig
ure 2;
Figure ¿l is a fragmentary cross-sectional View
taken ony substantially the line â--f~i of Figure 2;
Figure 5 is a fragmentary iront elevational
view of a modified form of the invention;
Figure 6 is a fragmentary cross-sectional View
mounted’on the back wall‘of the liner H by
means of a U-shap‘ed metal bar 22. The base of
the U is located outside of the outer wall of the
cabinet and is preferably in directcontact with
a portion of the condenser' Il. The legs of the
taken on substantially the line â--â‘ of Figure 5;
and`
Y
The sneu le of the, auxiliary compartment is Y
U extend'through the back walls of the casing
l0 and the liner Ii and into housing i8". The
legs of the U are secured to the side walls of thev
55 shell lâbyscrewsìä; In order to'prevent direct
2,409,069
3
contact and consequent conduction of heat from
the bar 22 to the liner Il, rubber grommets 25
are interposed between them. The grommets also
seal the holes in the liner through which the bar
22 passes, thereby preventing the escape of mois
ture into the insulation 24.
The auxiliary compartment is cooled by the
evaporator I3, The auxiliary compartment can
4
scribed construction, a portion of the heat from
the condenser I1' is utilized to evaporate the
liquid refrigerant in the coil 55, hence there is
no appreciable loss in efficiency of the entire re
frigerator.
From the foregoing it will be seen that the in
vention provides an auxiliary compartment which
can be maintained at temperatures above those
within the main food storage compartment
cause it is constantly being warmed by heat from l0 whereby butter and other foodstuffs can be prop
erly preserved, without causing an appreciable
outside the cabinet conducted through the bar
loss in the efficiency of the refrigerator as a whole.
22. The air within the auxiliary compartment
Furthermore, in the modification shown in Fig
will absorb this heat and thereby maintain the
ures 1 to 4 the U-shaped bar which forms the heat
temperature of the auxiliary compartment above
transfer medium, also provides the sole support
that of the main compartment.
not become as cold as the main compartment be
Since the arrangement just described conducts
heat from the exterior of the refrigerator into
the interior thereof, it would be expected to cause
a slight decrease in the eiìciency of the refrig
erator. This loss, however, will be offset to a con- ~.
siderable extent by absorbing the heat from the
condenser I1. Since the condenser I1 has to be
cooled and the bar 22 is to be heated, arranging
them in heat exchange relation increases the effi
ciency of the condenser. This arrangement is
much superior to an arrangement wherein the
heat transfer means is exposed only to the air
outside the refrigerator because the heat loss in
that case is an absolute Waste.
for the auxiliary compartment.
The scope of the invention is indicated in the
appended claims.
I claim:
1. A refrigerator including, in combination, a
cabinet formed to provide a main refrigerated
compartment, a housing in said main compart
ment defining an auxiliary compartment, the
walls of said housing being formed of relatively
poor heat conducting material, means for re
frigerating said main compartment including a
condenser located outside of said main compart
ment, and heat transfer means for maintaining
the temperature within said auxiliary compart
Figures 5 to ’7 show a somewhat modified form 20 ment above that within the main compartment,
said heat transfer means having a portion in
of the invention. The housing which forms the
heat exchange relation with said condenser and
auxiliary compartment in this modification is
designated by the reference numeral 55.
The
refrigerator in which the housing 50 is mounted
may be the same as that previously described. It ,v
comprises an outer casing I0^ and a liner Il'
with insulation 24' between them. At the back
of the refrigerator is a condenser I1' partially
surrounded by a flue I6’.
The housing 5D comprises an outer shell 5| and
a hinged closure 52. Preferably the shell and clo
sure are made from a plastic the same as that in
the previously described construction. The shell
5I of the housing 50 is secured in any suitable
manner, preferably by screws 53, to the back wall
of the liner Il’ of the refrigerator cabinet.
In this modification of the invention the heat
transfer means is a closed refrigerant circuit- It
comprises a continuous coil of hollow tubing 55
which is looped back and forth Within the shell
5I and extends through the back Walls of the
liner Il’ and the casing IB’ of the refrigerator
cabinet. The portion outside of the cabinet is
bent into the shape shown in Figures 5 to 7, and
another portion in heat exchange relation with
said auxiliary compartment, said last named por
tion being substantially insulated from said main
refrigerated compartment.
2. A refrigerator as defined in claim l wherein
said heat transfer means comprises a closed re
frigerant circuit containing a volatile refrigerant.
3. A refrigerator comprising, in combination, a
cabinet formed to provide a main refrigerated
compartment, a housing in said main compart
ment defining an auxiliary compartment, the
walls of said housing being formed of relatively
poor heat conducting material, and heat transfer
means for maintaining the temperature within
said auxiliary compartment above that within
the main compartment, said heat transfer means
comprising a closed refrigerant circuit having a
condenser portion in heat exchange relation with
said auxiliary compartment and an evaporator
portion located outside of the cabinet and in
heat exchange relation to the air outside of the
cabinet, said condenser portion being substan
tially insulated from said main refrigerated com
partment.
with the condenser l1'.
4. A refrigerator comprising, in combination,
The tubular refrigerant circuit 55 is partially
a cabinet formed to provide a main refrigerated
filled with a suitable volatile refrigerant. The
compartment, a housing in said main compart
quantity of refrigerant employed within the coil
is such that at the temperatures prevailing with Si) ment defining an auxiliary compartment, heat
transfer means for transferring heat to the air
in the auxiliary compartment a portion of the
Within the auxiliary compartment to maintain
refrigerant is liquiiied. Liquid refrigerant collects
it at a temperature above that within the main
in the bottom part of the coil and in the lower
compartment, said heat transfer means compris
most loop of the coil outside of the refrigerator.
Here it absorbs heat from the condenser I1' and ii 5 ing a closed refrigerating circuit containing a
volatile refrigerant and having a condenser por
is evaporated, The gaseous refrigerant then
tion within said auxiliary compartment and the
passes back into the auxiliary compartment
evaporator portion outside of said refrigerated
where it gives up its heat and is again liquiiied.
compartment, said condenser portion being sub
Thus it will be seen that the refrigerant circuit
55 is in effect a closed system wherein the evapo 70 stantially insulated from said main refrigerated
compartment.
rator is that portion outside the refrigerator and
5. A refrigerator as defined in claim 4 wherein
in contact with the condenser 56 and wherein
said closed refrigerating circuit comprises a con
the condenser of circuit 55 is that portion within
tinuous tube containing a volatile refrigerant.
the auxiliary compartment.
6. In a refrigerator cabinet having a refrig
In this modification, as in the previously de 75
is arranged so that a portion thereof is in contact .
¿409,069
„
5
erated compartment and a food storage recep
tacle within said compartment, means including
a hermetically sealed container partially ñlled
with a vaporizable liquid for transferring heat
from a suitable source thereof to the interior of
said receptacle.
7. In a refrigerator cabinet having a food stor
age compartment, a refrigerant circulating sys
6
tem for providing refrigeration in said comparta
ment, and a food storage receptacle within said
refrigerated compartment, means including a
hermetically sealed container partially filled with
a vaporizable liquid for transferring heat from
a portion of said system to the interior of said
receptacle.
HOMER
ROSEBROO'K.
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