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Патент USA US2136362

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Nov. 15, 1938.
G J; Hom'Ns
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2,136,362
REFR IGERATOR
vFiled Sept. 24, 1936
2 Sheets-Sheet 2.
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WITNESSES:
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6807198
IN VEN TOR.
Hop/(ins
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A TTORNEYS.
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2,136,362
Patented Nov. 15, 193_8
UNITED STATES
PATENT OFFICE
2,136,362
REFRIGERATOR.
George J. Hopkins, Kendallville, Ind., assignm- to
McCray Refrigerator Company, Kendallville,
Ind., a corporation of Indiana
Application September 24, 1936, Serial No. 102,277
4 Claims. (Cl. 62—-99)
The instant invention relates to refrigerators
and more particularly to refrigerators of the
cooler type whose refrigerating arrangement ‘is
particularly well adapted for installation in cool
ers such as are used in meat markets and the
like where head room conservation is desirable.
Although it is desirable to reduce the height of
cooler rooms from the standpoint of economy,
both in construction and in operation, but since
10 adequate head room for the purpose of moving
about therein is necessary, it will be recognized
that it is desirable that the space occupied by
the cooling apparatus be held to a minimum.
With the above situation in mind, cooler rooms
have been designed which employ relatively small
coils but such small coils forced the carrying
of temperatures therein so low that humidity in
the air within the cooler was frozen out with the
result that the stock therein dried up because of
20 the low relative humidity within the cooler.
The primary objects of the present invention
are therefore to provide a refrigerated cooler
whose height is such that it is both economical
in manufacture and in operation; to provide such
25 a cooler having su?icient head room and inside
space; and, to provide such a cooler having a
cooling apparatus therein which is adapted for
maintaining correct temperatures and relative
humidity.
30
An illustrative embodiment of the invention
is shown in the accompanying drawings, where
in:
Figure 1 is a longitudinal sectional view of a
refrigerator of the so-called cooler type and its
35 cooling apparatus on line l-l of Figure 2;
Figure 2 is a transverse sectional view thereof
on line 2-2 of Figure 1;
Figure 3 is a sectional view on line ‘3—3 of
Figure 2;
40
Figure 4 is an enlarged sectional view of a
portion of the cooling apparatus on line 4—4 of
Figure 5;
Figure 5 is a sectional view thereof on line 5-_-5
of Figure 4, a portion thereof being broken away;
45 and
Figure 6 is a sectional and top plan view on line
6-6 of Figure 4.
Referring then to these drawings in which like
parts of the refrigerator and its cooling apparatus
50 therein shown are designated by the same numer
als in the several views, a refrigerator of the
inside thereof is an overhead intake manifold I!
in communication with the intake conduit l8 con
nected with the discharge port of the compressor.
This intake conduit is provided with a valve 11,
preferably and as here shown, of the thermostatic
expansion type.
At the opposite end l2 of the refrigerator and
likewise on the inside thereof is an overhead dis
charge manifold [8, both manifolds being dis
posed in parallelism and in parallelism with their 10
respective end walls with which they lie adjacent
as best shown in Figure 1.
A plurality of spaced horizontally disposed over
head refrigerating conduits IB, here shown as
comprising a pair of spaced batteries A and B 15
(see Figure 3), disposed adjacent opposite side
walls I0, I I of the refrigerator and as best shown
in Figures 2 and 3, communicate at their sev
eral respective opposite ends with the intake man
ifold I5 and with the discharge manifold Ill.
20
The plurality of spaced refrigerating conduits
l9 of each battery A, B are provided with trans
verse and vertically disposed fins 20 which are
each secured to and embrace each conduit in the
battery. Depending brackets 2| having hooked 25
ends engaging a refrigerating conduit of each
battery and suspended from supporting mem
bers 22, are here shown as provided for the over
head support of the refrigerating conduits l9 and
their manifolds I5, I8.
30
A discharge conduit 23 is provided at one end
with a standpipe 24 disposed within the discharge
manifold l8 and its other end is connected with
the suction port of the compressor. This stand
pipe has a pair of oil draining apertures 25 inter 35
mediate its height whose function is hereinafter
set forth and a feeler or control bulb 26 con
nected with and for operating the thermostatic
expansion valve l1 lies adjacent and in contact
with the discharge conduit 23.
40
Insulated drip pans 21, 28 disposed at an angle
beneath both batteries A, B of refrigerating con
duits IQ for catching and retaining the water of
condensation are likewise provided and run lon
gitudinally of the refrigerator to whose ends they 45
are secured in any conventional manner and
from which drip pans outlet conduits, not shown,
may be provided.
Operation
50
In operation and assuming the interior of the .
refrigerator is warm, the feeler or control bulb 26
so-called cooler type such as is used in meat _
markets and the like has a pair of spaced and connected with the thermostatic expansion valve
vertically disposed side walls [0, H, end walls I‘l causes this valve to open whereupon the com
pressor causes the refrigerating liquid to flow 55
55 l2, l3 and a top I4, all of suitably insulated ma
through the intake conduit l6 into the intake
terial of any conventional character. This re
manifold l5 from which it ?ows through the plu
frigerator is provided with the conventional com
rality of refrigerating conduits 19 of both bat
pressor, not shown, having the customary dis
teries Aand B into the discharge manifold l8.
charge port and suction port.
The standpipe 24 prevents suction of the liquid
At the end iii of the refrigerator and on the
60
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2,186,862
refrigerant by the compressor through the dis
charge conduit 23 before it expands into gas
within the refrigerating conduits l9 and to pre
vent the accumulation of oil in the discharge
manifold l8 resulting from the relatively low ve
locity of gas passing through the refrigerating
conduits IS, the oppositely disposed apertures 25
within the standpipe 24 are provided.
Positive thermostatic circulation of air up the
10 walls where the heat leak is greatest and thence
downwardly through the finned refrigerating
conduits I9 is thus provided and as indicated by
the arrows in Figure 2 representing air convec
tion currents.
15
It will thus be seen that the refrigerator and
its cooling apparatus herein shown and described
(1) provides broad refrigerating spread which
intercepts maximum circulation within the re
frigerator, (2) provides conservation of height
within the refrigerator because of the type of
cooling apparatus, (3) provides against oil log
ging within the cooling apparatus, (4) provides a
constant pool of refrigerant ready and capable
of assuming any unusual load such as upon the
25 opening of the door of the refrigerator in which
instance there is no practical disturbance of
either temperature or relative humidity, (5) pro
vides for uniform flooding of cold air within the
refrigerator, (6) provides for e?icient and supe
30 rior heat absorption capacity because of the cir
culation-of air through large area ?nned liquid
laden tubing, (7 ) provides for an ei?ciently op
erating compressor since the heat absorbing abil
ity of the cooling apparatus enables back pres
35 sure and resultant temperature to be carried
high, (8) provides a gentle temperature system
which maintains a more advantageous relative
humidity condition under abnormal service bY
boiling more of the liquid which is always present
in the tubing, (9) provides a novel double head
4.0
er or manifold construction at opposite ends of
the refrigerator, and (10) provides a cooling ap
paratus which maybe serviced with one valve
resulting in economy in adjustment.
While but one speci?c embodiment of this in
vention has been herein shown and described, it
will be understood that certain details of the
construction shown may be altered or omitted
without departing from the spirit of this inven
tion as de?ned by the following claims.
50
I claim:
1. A refrigerator provided with an overhead
intake manifold disposed at one end thereof
communicating with a valved intake conduit, an
overhead discharge manifold disposed at the
55 other end of the refrigerator, a pluralityv of
spaced horizontally disposed overhead refrigerat
ing conduits communicating at their respective
opposite ends with the intake manifold and dis
charge manifold, a plurality of spaced ?ns trans‘; _
versely secured to and embracing each of the
plurality of refrigerating conduits, a discharge 5
conduit provided with a standpipe disposed with
in the discharge manifold, said standpipe hav
ing an oil draining aperture therein intermedi
ate its height, and a thermostatic element con
tacting the dischargmdulr'foroperating the
valved intake conduit.
2. Aerefrigefator provided with an overhead
intake manifold disposed at one end thereof com
municating with a valved intake conduit, an,
overhead discharge manifold disposed ’ at the 15
other end of the refrigerator, a plurality of
spaced horizontally disposed overhead refriger
ating conduits communicating at their respective
opposite ends with the intake manifold and dis
charge manifold, a plurality of spaced ?ns trans 20
versely secured to and embracing each of the
plurality of refrigerating conduits, a discharge
conduit provided with a standpipe disposed with
in the discharge manifold, and a thermostatic
element contacting thgmdisgcliirgemco'?duit for
I I
.
vefvavvérfintake conduit.
re ri’gerator provided with an overhead in
take manifold disposed at one end thereof com
municating with a valved intake conduit, an
overhead discharge manifold disposed at the
other end of the refrigerator, a plurality of spaced
horizontally disposed overhead refrigerating con
duits communicating at their respective opposite
ends with the intake manifold and discharge
manifold, a plurality of spaced fins transversely
secured to and embracing each of the plurality
of refrigerating conduits, a discharge conduit
provided with a standpipe disposed within the
discharge manifold, said standpipe having an oil
draining aperture therein intermediate its height,
and a thermostatic \glementelforsoperatng the
valved intake‘é’d?diiit‘.
4. A refrigerator" provided with an overhead in
take manifold disposed at one end thereof com
municating with a valved intake conduit, an
overhead discharge manifold disposed at the
other end of the refrigerator, a plurality of
spaced horizontally disposed overhead refriger
ating conduits communicating at their respective
opposite ends with the intake manifold and dis
charge manifold, a plurality of spaced ?ns trans
versely secured to and embracing each of the
plurality of refrigerating conduits, a discharge
conduit provided with a standpipe disposed with
in the discharge manifold,
element for operating the val
‘
a e conduit.
“"WGEURGE‘TH‘OPK'IZNS‘
25
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