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Патент USA US2411376

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Nov. 19, 1946.
‘
B, c_ JOHNSON
2A1 1,376
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£42 a
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,0
4
5a
Janso
Nov; 19, ‘1946. ‘
B, c, JQHNSQIIN
‘
2,411,376
REFRIGERANT EVAPORATOR
Filed-larch 16, 1944
2 Sheets-Sheet" 2
Bernard 6 Johnson
Patented Nov. 19, 1946
~ 2,411,376
UNITED STATE-s. PATEN T
OFFICE ‘ "
2,411,376
REFRIGERANT EVAPORATOR
J Bernard 0. Johnson, Mundelein, 111., assignor to
Houdaille-Hershey Corporation, Detroit, Mich,
a corporation of Mic
' ' Application March 16, 1944, Serial
526,665
11 Claims. - (01. 62-126)
2
This invention relates to a refrigerant evapo
rator, and more particularly to an L-shaped evap
orator for assembly in a refrigerator box or the
like. The invention also relates to a combination
tional view of a refrigerator box illustrating a pair '
of such evaporator units positioned therein;
Figure‘3 is a similar, fragmentary, vertical sec
tional view of a refrigerator box illustrating a‘pair
of such L-shaped evaporator units, together with
several plate-like evaporator units, so positioned
with a refrigerator box,'or the like, of one or morev
L-shaped evaporators for de?ning with the walls
of said refrigerator box quick-freeze compart
ments, frozen food compartments and the-like.
as to provide a pair of quick-freeze chambers and
an intermediate frozen food chamber;
.
In accordance with the principles of my inven
Figure 4 is an elevational side, view of an evap
tion, I provide a standardized evaporator unit 10 v‘orator unit of .my invention;
that is L-shaped in end view. Such an evapo
Figure 5 is an enlarged, end elevational view of
rator unit, can be readily formed from metal
the unit illustrated inj’igure 4; and I
sheets stamped to provide refrigerant ?ow pas
Figure 6 is a top ; plan view on a reduced scale
sages, headers or the like. After assembly, the
of the evaporator unit in its ?at, sheet-like form,
resulting ?at unit is bent into L-shape with 15' priorto being bent into L-shape and prior to the
?anges turned up on the ends of the legs of the
?anges being formed on the end edges thereof.
L for attachment to the walls of a compartment
I The reference numeral I 0 indicates ‘generally a
to be refrigerated, such as a refrigerator box. A
refrigerator box or housing. While the‘invention
single such unit can be mounted in a refrigerator
will be explained by reference to a refrigerator
box in such a way as to de?ne a quick-freeze .com
20 box, it will be understood that the invention is '
partment for receiving ice trays. Alternatively,
equally applicable to a refrigerated room or other
a pair of such L-shaped'units may be attached to
the top and sidewalls of the refrigerator box in a
back-to-back relation, but with a space th'erebe
tween that can be utilized for the storage of tall
chamber. Said refrigerator box I0. is’ illustrated
in its conventional form as having an upper‘or top
wall H and sidewalls l2 and I3, together with a
Cl
’ bottles of milk and other liquids; one of the units '
being used for ice freezing and the other for
frozen foods. In still a further modi?cation, the
space formedbetween the two units may be used
' ward the back Wall M.
as a frozen food compartment by placing refrig
erated ?at plate-like units at the top ‘and bottom 1
spaces. Where two or more units are used, the
‘ units can be connected for refri gerant
between.
back vwall l4. As viewed in Figures lto 3, inclu
sive, the viewer is looking into the refrigerator to
I
fiow there
.
In Figure 1 there is illustrated an arrangement
in which a single L-shaped evaporator unit I5 is
30 positioned in the refrigerator box In in an upper
corner thereof to de?ne a quick-freeze chamber,
' indicated generally by the reference numeral l6.
_ Said evaporator unit I5 is provided with a vertical
leg I‘! having a ?ange l8 extending along its up
' It is therefore an important object of this in
vention to provide a standardized type of evapo- .
per edge that is attached‘to the upper wall ll '
by an attaching means I9; The horizontal leg 20
.rator unit formed of a plurality of stamped sheets
of said evaporator unit is' provided with an up
to provide the refrigerant ?ow passages, headers
turned ?ange 2| through which attaching means
or the like, the resulting sheet-like unit being ‘ vi2 extend into the side wall I 2 of the box. A ver-i
then bent into L-shape and providedwith at, 40‘ tically extending plate 23 is also supported from
taching ?anges, whereby the unit, or alplurality
the attaching means 22 and serves to support one
of such units, can ,be‘readily positioned within a 7 side 'of a horizontal shelf .24. The other side of
the shelf 24 maybe brazed or otherwise secured,
refrigerator box or the like to provide suitable
as at 25, to the vertical leg l1‘! of the evaporator ,
quick-freeze chambers, frozen food compartments
45 unit l5. The purpose of the‘shelf 2 4 is, of course,
or compartments for other purposes.
'
to support ice trays (not shown).
Other and further important objects of this in
In Figure 2, a‘ pair of evaporator, units l5‘ are I
vention will be apparent from the disclosures in
illustrated
as positioned in a refrigerator box
the specification and the accompanying drawings.
‘It to provide a pair of quick-freeze compart
On the drawings:
Figure-lie a fragmentary, vertical sectional 50' ments ‘[6 and Mia. Each of the evaporator units
view of a refrigerator box illustrating the manner
of positioning and attaching an L-shaped evapo
rator unit of my invention;
I
r
.
Figure 2 is a similar, fragmentary, vertical sec
I5 is of identical construction. The L-shape of
the evaporator units l5 lends itself to coopera
tion with the walls of the refrigerator box to
de?ne therewith quick-freeze chambers, and by
65 ' placing the two evaporator units in'back-to-back‘ ‘
2,411,876
4
In Figure 3, a somewhat vmore complicated
relationship, as illustrated in Figure 2, a space
26'is left between said evaporator ‘units for any
refrigerating system is illustrated. .In this ar
- range'ment, an inlet-pipe 64 is connected directly
desiredpurpose, such as for use as. a food and a
to the plate-like evaporator 28. The outlet of
said plate-like unit 28 is connected by means of
bottle compartment. In Figure 2, a wire shelf
21 extends horizontally beneath the evaporator
unit It to form a support for food placed in the
a pipe 65 to the inlet side of the other plate-like
space 26.
unit 30. After ?owing through the unit 36, the
refrigerant ‘passes out througha pipe 66 and
i
In Figure 3, further provision for refrigerat
ing the space 26 is shown. A ?at, plate-like re
frigerator unit 28 is attached by means of up
turned ?anges “to the L-shaped evaporator
through branch piping 51 and. 63 to the shelf
type units 3|. Short pipes 68 and 60' connect
said shelf units 3| to the L-shapedrunits II.
The headers 34 of said'unit, is are connected by
means of a pipe 62 and a return pipe 63 to the
units I6. adjacent the bends therein. The plate
like evaporator unit 26 thus serves as a bottom
condenser-compressor unit.
wall for the space 26. In addition, a second‘
plate-like‘evaporator unit 30 is positioned ad 15
Various other refrigerant circuits could be em?
jacent'the top wall II and supported at its ends
ployed than those here illustrated. The im
portant thing is'that my standardized L-shaped
from the‘ same attaching means l9 that ‘serve to
support the upper ends of the L-shaped evapo
rator units l5. Other plate-like evaporator units
evaporator unit lends itself to readyv adaptation
in formingeither one or'a plurality of 'quick-.
3|» may be mounted as shelves to givev additional 20 freezing compartments, frozen food- chambers or
the like. These different arrangements can be
refrigerating capacity in the quick-freeze cham
bers I6 and I6a.
easily fabricated from
,
L-shaped evaporator
Before describing the arrangement for refrig
units, with or without the‘ use of plate or shelf?
erant ?ow shown in Figures 1‘ to 3, inclusive, the
type units. As a result, the number of different
construction of one of the L-shaped evaporator 25 styles of evaporator units and of sizes in each‘
style can be greatly reduced.
units I6 will be explained.‘ The fundamental
construction of all of the evaporator‘ units is
It will, of course, be understood that various 4
substantiallythe same. As illustrated in Figure
details of construction may be varied ‘through a
6, an evaporator unit 32 is initially formed by
wide range without departing from the principles
vjoining together a pair of co-extensive sheets of 30. of this' invention and it ‘is, therefore, not the
metal stamped to provide transversely extending 1
purpose to limit the patent granted hereon
headers 33 and 34 and connecting refrigerant
?ow passages 36. ‘,The header 34 may be a com
pound header comprising an inner header por
appended claims.
otherwise than necessitated by the ‘scope of the
, tion 36 and an outer header portion 31 parallel 85
thereto and in flow communication therewith
. around one end, as at 38.
A further com'muni
the refrigerant piping.
40
-
I
1. In combination, a refrigerator box, an evap
said apertured. end ?anges forv attaching, said
evaporator to adjacent walls of'said refrigera
tor boX.
'
,
2. In combination. a refrigerator having top
and sidewalls, an evaporator unit of sheet-like
The endsio'f the plate-like evaporator unit 32 ’
_ are ?at,'th_e headers 33 and 34 lying well inside
‘
-
,orator unit of L-shape and having. integral aper- tured end ?anges, and means passing through
cation between the header portions 36 and 31 ,.
may be provided intermediate-their lengths, as
at 39. The outer header portion 31 extends to
an edge of the sheet to afford a connection 40 for
-
What I claim is:
construction and L-shaped in end view, said unit
having. integral ?anges provided with apertures.
the end edges of the plate. ‘Apertures' 4| are pro
and means extending through said apertures into
vided in‘the ?at marginal portions for receiving.
said walls to attach said unit thereto.
attaching means such as the means I! previously
3. In combination, a refrigerator‘having top’
and sidewalls, a plurality 6f. L-shaped, sheet
described.
'
_
As illustrated in Figure 5, the’ ?at marginal
'
like evaporator units, each vunit having ?anges
portions are turned‘ up to provide end ?anges 42 50 for attachment to said walls, and means attach
' and 43. ' Either before or after the bending of
the ?ange portions 42 and“, the plate 32 is
- bentinto L*-shape, as by forming a smooth bend
ing said units ‘through said‘ ?anges to said top
and. sidewalls.
‘
'
'
4. In combination, a refrigerator having top
44. Nipples 45_and 46 are, suitably attached to ' and sidewalls, a plurality 'ofIL-shaped, sheet-like
- the outlets of the manifolds stand 33. >The* 55 evaporator units, each unit having ?anges for
- evaporator .unit I5 is then in its ?nished con
' ditionv ready for installation in any of the
are
ners illustrated in'Figures 1 to 3, inclusive.
As illustrated in Figure 1, the refrigerant en
’ -ters the evaporator unit ‘15 through the nipple 80
46 into the header. 33, from.which it passes
vthrough the passages 35 to the compound header
34. The purpose of dividing the compound head
er “is to eliminate the liability of liquid refrig
attachment to said walls, and means attaching
said units through said ?anges tosaid top and
vsidewalls, each unit de?ning with the wall por
tions spanned thereby a quick-freeze chamber. I I
15. In combination, a refrigerator having top
and sidewalls. a pair of evaporator units in vref
rigerant ?ow communication with each other,
each .of said units being L_-shaped ‘and being
connected at its ends to a top and a sidewall to
erant passing out through the nipple 45, or, in 65 define therewith a food and bottle chamber.
other words,'to insure complete evaporation of . _
6. In combination, a refrigerator having top
the liquid refrigerant within the evaporator unit
and‘sidewalls, a pair of evaporator units in refrig
erant ?ow communication with each other, each
In Figure 2, the refrigerant system includes I other, each of said units being L-shaped and be
inlet ‘piping 48, from which ‘extend branch piping 70 ing connected at its ends to a top ‘and a side
I6.
"
‘
'
49 and vSlLto'the two evaporator units IS. A The
compound headers 34 of said evaporator units
wall to de?ne therewith a quick-freeze chamber ‘
pipe 62 ,leads to the condenser-compressor unit
and a refrigerated plate joined to the backs of
said L-shaped units to de?ne therewith and with
the top wall a frozen food compartment.
(not shown).
I‘ 7.'-In,combination a refrigerator having
, "are connected by piping 5|, from which a
‘
-' '
.‘
2,411,370
and sidewalls, a pair of evaporator units in refrig
erant ?ow communication with each other, each
of said units being L-shaped and being connected
10. In combination, a refrigerator box hav
ing a top and sidewalls, a pair of L~shaped evap
orator units secured to said walls in spaced back
to-back relation to each other and defining with
said walls quick-freeze compartments, a refrig
erant inlet pipe branched for connection with the
lower ends of said units and a refrigerant outlet
at its ends to a top and a sidewall to de?ne there
with a quick-freeze chamber and a refrigerated
plate joined to the backs of said L-shaped units
to de?ne therewith and with the top wall a frozen
food compartment, said plate having refrigerant
pipe branched for connection with the upper ends
?ow passages in ?ow communication with said
pair of evaporator units.
-
8. In combination, a refrigerator box having
a top and sidewalls, a pair of L-shaped evapora
tor‘units secured to said walls in spaced back-to
back relation to each other and de?ning with said
walls quick-freeze compartments.
of said units.
10
\
\
.
11. In combination, a refrigerator having a
top and sidewalls, a pair of sheet-like evapora
tor units, each L-shaped in end view and con
nected to the top and a sidewall to de?ne there
with a quick-freeze chamber and to leave a space
15 {between said units, a pair of horizontally dis
9. In combination, a refrigerator box having a
posed plate-like evaporator units positioned at
top and sidewalls, a pair of L-shaped evaporai
the top and’ bottom of said. space between said
tor units secured to said walls in spaced back
?rst units, and refrigerant ?ow conduits con
to-back relation to each other and de?ning with
necting all of said units. '
said walls quick-freeze compartments and shelves 20'
in said compartments for supporting ice trays.
ARD C. JOHNSON.
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