close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2134665

код для вставки
Oct. 25, 1938.
J. KARMAZIN
2,134,665
REFRIGERATING APPARATUS
I
Filed Sept. 30, 1956
//
42
2 Sheets-Sheet l
‘
4/ A3 ‘
27
.
-
Z8
3/ -
27
M
5% 5 »
3' 32
'
'
INVENTOR.‘
‘ja'mv‘ ,fmenMz/M
ms ATTORNEYS.
‘
Oct. 25,1938.
J. KARMAZIN
2,134,665
REFRIGERATING APPARATUS
Filed Sept. so, 1936
‘
" 2 Sheets-Sheet 2
K
35
.w
/é /
;\
2.2
a9
'
22
K2
//4
33
J7
‘ 38
I
33910
BY
‘Patented Oct. 25,1938
’
a
' 2,134,665
‘UNITED STATES PATENT OFFICE
REFRIGERATING APPARATUS
John Karmazin, Huntington, Ind., assignm- to
General Motors Corporation, Dayton, Ohio, a
_
corporation of Delaware
'
.
Applicationseptember a, 1936, Serial No. 103.277
7
(01. 62-126)
This invention relates to refrigeration and par-
frigerant inlet connection‘ of the cooling element
systems.
and is taken on the line 8—8 of Fig. 3;
‘
v .
e
An object of my invention is to provide an
Fig. 9 is a fragmentary side view of a modi?ed.
improved cooling element of pressed sheet metal
form of cooling element having ?ns of a different I
construction.
design; and
-
_
Another object of my invention is to unidirec-
Fig. 10 is a vertical sectional view of the mod
tionally assemble a plurality of similar pressed
i?ed cooling element design showing the ?n con
sheet metal members together and. to bond'the
tour.
10 members to one another to formacooling element
having a plurality of refrigerant passages therein
and integral ?n members extending from the.
walls of the passages.
‘
.
A further object of my invention is to provide a
15 cooling element of pressed sheet metal construc-
20
Fig. 8 is an enlarged sectional view of the re
ticularly the cooling elements for refrigerating
' .V
.
v
‘
'
>
Referring to the drawings, for the purpose of 10
illustration, I have shown in Fig. 1 thereof a cqoling element‘ or evaporator generally represented
by the reference character ll.
Cooling element
or evaporator H, is provided with a liquid re
frigerant inlet connection I2 and a gaseous re- 15
tion having refrigerant passages therein and improved means for stiffening the’ element and for
distributing incoming refrigerant at a plurality
of points throughout the length of the passages.
frigerant outlet connection I: adapted to be con
nected by suitable pipes with any. conventional
refrigerant liquefying and circulating unit (not
shown). The cooling element or evaporator I I is
In carrying out the foregoing objects it is a
still further and more speci?c object of the in-
constructed of a plurality of unidirectionally su- 20
perimposed sheet metal ?n members It each hav
vention to provide a cooling element with means
ing a plurality of tube elements l5 struck or
for distributing incoming refrigerant to a plurality of points throughout its refrigerant pas-
pressed therefrom and telescoped together to pro
vide a plurality of parallel and horizontally dis
'25 sages and to provide means for causing a recircu- posed rows of closed refrigerant conduits or pas- 25
lation of refrigerant from one part to ‘other parts » sages l6 extending through the structure and dis‘
. of the element to thereby increase the e?iciency
thereof.
.
posed in vertical rows. ' In striking each of the
tube elements ‘l5 from the ?n members I‘ an
Further, objects and advantages of the present
30 invention will be apparent from the following
description, reference‘being had to the accompanying drawings, wherein a preferred form of
opening H (see Figs. 4 and 5) is punched from
the sheet metal at the small diametered end of 30
the tube elements IS. The material adjacent the
opening II, at the small diametered end of the
the present invention is clearly shown. '
In the drawings:
35 Fig. 1 is a side elevational view of a cooling ele-
tube elements It, is cut and deformed as at l8 to
provide a perforated wall comprising a vertical
ment constructed in accordance with the present
invention;
‘
Flg. 2 is an end view. of the cooling element
part It and two horizontal parts 2| and '22 (see 35
Figs. 4 and 5) extending across the refrigerant
passages It formed by the superimposed and-tele
scoped together tube elements IS. ‘The plurality
disclosed in Fig. 1;
'
40 Fig. 3 is an enlarged side view taken in the di-
of openings I1 and the wall parts l9, 2| and 22
provided in the fin members II are for a‘purpose 40
'
to be presently described.
rection of the lines 3-3 in Fig. 2 showing the
cooling element partly in section and partly‘ in
elevation;
'
’ '
'
.
Fig. 5isa vertical fragmentary enlarged section
taken on the line 5-5 of Fig. 3 and further show50 ing the support of a refrigerant pipe within an—
other refrigerant pipe;
Fig. 6 is a top plan view of a portion of the
small refrigerant pipe;
.
Fig. 'l is an end view of the refrigerant pipe
'
elements l5 thereof in registration or telescoped
relation to ‘form a cooling velement of a certain 45
size, a plurality ‘of small plate members 25 (see
Fig. 3) having a pair of tube elements 26 formed _
‘
disclosed in Fig.8;
.
?n members H upon one another with the tube 1 _
. Fig. 41s a horizontal fragmentary enlarged sec45 tion taken on the line 4-4 of Fig. 3 showing the
support of a refrigerant pipe within another refrigerant pipe;
,
After stacking a predetermined number ‘of the
-
therefrom are placed against the element It at
one end thereof. One of the pair of tube elements
.26 of plate members 25 registers and communi- .50
cates with a lower refrigerant passage it of a
horizontal row thereof while the other of the pair
of tube elements 26 registers and communicates ,
with an upper refrigerant passage It. A cap or
end cover 21 is secured to the edge of each of the
2
2,184,665
end plate members 25 and provide closed U-bends
‘communicating with each pair of vertically ar
ranged refrigerant passages I6. A bracket 23 is
then welded or otherwise secured to each of the
vertically disposed caps 21 for supporting the
cooling element II in a vertical position.
It will be noted that the two ?n members I4
adjacent the opposite or right hand end of the
structure as viewed in Fig. 3 have the entire ver
10 tical end portion of the tube elements l5 cut
away to provide clearance for the insertion of
stiffening members which in the present inven
tion are in the form of small pipes 3| into‘ the
refrigerant passages I6. A late 32 forming one
15 wall of a header33, is p ovided with ?anged
openings 34 which are secured to the tube ele
conduit of elongated contour in cross-section.
By locating pipes 3| in the refrigerant passages
I6 the evaporator is stiffened and. the structural
strength thereof is thereby increased. The ends
5| ofv pipes 3| are secured to the ?anged openings
36 of plate 35 and the pipes 3| extend continu
ously through the refrigerant passages I6 and
termlnatein the end cups 2'! at the one end of the
evaporator II. The stiffening members or pipes
3| are ?rmly supported in spaced relation to the 10
walls of passages I6 by the cross wall parts I3,
I9, 2| and 22 at the ends of the tube elements I5.
The flattened portion 52 of pipes 3| have a
crevice 53 provided in any suitable manner there
in and extending from a point adjacent the 15
round end portion 5| thereof throughout the re
mainder of their length. The opening provided
by the crevice 53 andleading into the passage
I6 is intermittently interrupted or closed by the
plurality of cross wall parts 2| which lie against
and are secured to the pipes 3|. These pipes 3|
serve to distribute liquid refrigerant, ?owing into
the evaporator II from header passage 39, at a
plurality of points along the length of the pas
sages I6 formed by the tube elements I5 in a
ments I5 of the ?n members I4 at this opposite
end of the structure. A corrugated plate 35,
forming the other wall of header 33,. is secured
20 in any suitable manner to plate 32. The refriger
ant passages |6 formed by thetelescoped tube
elements I5 communicate with the interconnected
passages of header 33 formed by the corrugations
in platev 35. Plate 35 is also provided with a plu
rality of ?anged openings 36 which are disposed
in alignment with the openings‘ I‘! provided in manner and for a purpose to be hereinafter de
the perforated cross wall part I3 at the ends of.
In Figs. 9 and 10 I have shown my inven
the tube elements I5. One end of the small pipes
tion incorporated in an‘ evaporator structure
3| is adapted to be secured in the ?anged open
ings 36 of corrugated plate 35. A second corru wherein the ?n members 6| are complementary
gated plate 33, having interconnected passages 39, parts of other ?n members 62. In this form of
is secured to the corrugated plate 35. The liquid my invention the two ?n members 6| and 62 to
gether with their respective side web portions
refrigerant inlet connection coupling I2 is se
scribed.
cured to a central enlarged portion 4| formed in
plate 38. It will be noted that the plate 32 and
the ?rst corrugated plate 35 each also have an
enlarged portion registering and forming a cham
ber 42 at the upper portion of the evaporator
II. Chamber 42 vcommunicates withthe gaseous
.
-
63 and 64 are cut or stamped from a piece of
metal substantially of a size ordinarily employed
to provide a single ?n as is fully disclosed in the
patent to Jesse G. King No. 2,055,499 dated Sept.
29, 1935. The inactive ?n portion of an ordinary
?n is thereby utilized to form a second ?n which
refrigerant outlet connection I3 and serves as an ' greatly reduces the amount of material necessary
to provide the required number of ?ns on an
equalizing chamber during operation of the re
frigerant llquefying and circulating unit . con
nected to the evaporator.
\
A conduit 45 has its‘one end 46 secured to_ an
opening provided in plate 35 to thereby com
municate with the header 33 and has its other
end 41 secured to an opening in the liquid re
frigerant inlet connection coupling I2. By re
ferring to Fig. 8 of'the drawings it will be noted
that the end 41 of conduit 45 is cut at an angle as
at 43 so as to dispose. a portion of the end 43 of
conduit 45 in the path of liquid refrigerant ?ow
ing into the evaporator II.' The portion 43 of
conduit 45 obstructs the flow of liquid refriger
ant to the evaporator and this obstruction
causes a suction to be created in conduit 45 to
thereby draw liquid refrigerant from the lower
part of header 33 and causes its ?ow upwardly in
conduit 45. to the chamber 4|. The conduit 45
and its arangement in connection I2 thereby
causes a recirculation of liquid refrigerant from
one part to other parts of the evaporator II and
improved evaporator of the type disclosed.
It is to be noted that the tube elements I5 of
?n members I4 may be secured at the same time
pipes 3| are securedto plate 35 and to cross wall
parts I8, I9, 2| and 22 by brazing or soldering in
any manner well known to those skilled in the
art in accordance with the steps of assembly em
ployed. All the parts and elements of the im
proved evaporator disclosed are firmly secured
together to provide a unitary structure. The
pipes 3| serve totsti?en and increase the struc
tural strength of the evaporator disclosed. The
unitary structure has an improved refrigerant
?ow circuit embodied therein to thus increase the
e?iciency thereof as will be apparent from the
detailed description of the ?ow of refrigerant
through the evaporator.
‘
.
greatly increases the e?iciency thereof. While
Liquid refrigerant flows from an expansion or
?oat valve employed in a closed refrigerating sys
tem, with which evaporator II is a part, into the
inlet connection I2 of evaporator II. This liquid
refrigerant enters the chamber 4| and is directed
I have found that the structure shown will pro
vide sufficient suction pressure in conduit 45 for
the purpose disclosed this suction pressure may,
if desired, be increased by providing a conven
tional venturi arrangement as is well known to
those skilled in the art.
by the-header passages 33 formed in plate 33
to the open ends 5| of the plurality of pipes 3|.
The liquid refrigerant flows through the pipes 3|
and is distributed at a plurality of spaced points,
through the crevices 52, into the refrigerant pas
sages I5, formed by the tube elements I5 pro
'By referring to Figs. 6 and 7 of the drawings
it will be observed that the pipe 3|, which is in
serted in the 0
H of cross wall parts I3,
I3, 2| and 22 at'the end of tube elements I5
in ?n members I4,'has a rounded end portion
we 5| and a ?attened portion 52 which provides a
vided on ?n members I4. Distribution ‘of liquid
refrigerant in this manner occurs simultaneously
over substantially the entire . evaporator and
causes agitation of refrigerant contained there
in to thereby create a disturbance of the refrig
erant in the evaporator to thus stimulate evapo
2,134,6665 '
ration or vaporization.
The expansion or ‘?oat
valve and other elements of the refrigerating
system are constructed and arranged to main
tain a predetermined level of liquid refrigerant
in the evaporator II. 'To further stimulate
vaporization or bdiling of refrigerant in the cool
ing element or evaporator II the conduit 45, by
1 3
2. A cooling element for a refrigerating sys
tem comprising in combination, a plurality of ?n
members having a plurality of tube portions ex
tending therefrom, said ?n members being super
imposed one upon the other‘with the tube portions
thereofqtelescoped and secured together to provide
a unitary structure having a plurality of rows of
virtue of the suction created therein by the
*velocity of incoming liquid refrigerant to the
closed refrigerant passages extending through the
parts thereof. Liquid refrigerant drawn by con
duit 45 from the lower portion of evaporator ll
comingles with the relatively coldincoming liquid
15 refrigerant and thereby quickly‘ increases the
crevice in its top surface and extending substan
tially throughout the length of the pipe, means
structure, a pipe disposed Within one of said plu
- frigerant from one part of the evaporator to other ,, rality of refrigerant passages, said pipe having a
10 evaporator, causes a recirculation of liquid re
it
formed integral with the tube portions of said ?n
members for supporting said pipe in spaced rela
temperature of liquid refrigerant ?owing through ' tion tovthe walls of said one of said plurality of 15
refrigerant passages, and said means cooperating
pipes 3i to further stimulate boiling. The dis
tribution of liquid refrigerant at. a plurality of with the crevice in said pipe to provide a plurality
points into the refrigerant passages l6 and the of spaced apart openings throughout the length
recirculation of liquid refrigerant from the lower of said pipe for discharging liquid refrigerant
said one refrigerant passage at a plurality
part of evaporator H by vthe conduit it? to a into
of spaced points.
plurality of other parts thereof prevents the
3. A cooling element for a‘ refrigerating sys- '
formation of quiet or dormant zones within the
evaporator. By eliminating the presence of such tem comprising in combination, a plurality of
(at zones the transfer of heat from the ?uid to be unidirectionally nested members secured together
cooled by the evaporator to refrigerant contained to form a unitary structure, said- members in 26
?n portions having tube portions formed
therein is greatly increased. The ?n' members it cluding
integral
therewith and telescoped together to
also aid in transferring this heat to thereby
provide an evaporator of maximum e?ciency. provide a plurality of refrigerant passages
dill Refrigerant vaporized in the refrigerant passages through the structure, means for connecting an
it of evaporator ll ?ows therefrom into the end of one, of said passages to an end of another
header passages ti and upwardly therein to the of said passages at one end of the structure,
gaseous refrigerant chamber M from where it is means for connecting the other end of said one
drawn by suction of the refrigerant liquefying of said passages with an end of still another of
said passages at the other end of the structure,
$5 and circulating unit through outlet connection II t.
last-named means forming a header com 35
From the foregoing it will be seen that I have said
municating with all of said plurality of refrig
provided an improved unitary evaporator or cool
ing element for a refrigerating system which can erant passages and being provided with a re
:
to
be constructed from a plurality of unidirectionally
nested and secured together sheet metal integral
?n and tube members. The improved distribu
tion into and recirculation of liquid refrigerant in
the evaporator as described and the integral fin
frigerant outlet connection, a pipe within one of
said‘refrigerant passages and provided with a
plurality of outlets for distributing liquid re Mi
frigerant ata plurality of points along the length
of the said one passage, a liquid refrigerant inlet
connection for said‘cooling element, and a re
and tube elements, together with the integral 1 frigerant passage communicating with said pipe
cross wall parts extending into the refrigerant
and with said liquid refrigerant inlet connection
for conveying incoming liquid refrigerant to said
element directly to said pipe.
passages forms a structure which provides maxi
mum and e?icient heat transfer from a ?uid to be
cooled'to refrigerant in the evaporator while at
4. A cooling element for a “refrigerating sys
tem comprising in combination, a plurality of
the same time providing a structure that can be
5% readily manufactured at low cost.
'
.
unidirectionally nested members secured together
While the form of embodiment of the invention
as herein disclosed, constitutes a preferred form,
it is to be understood that other forms might be
adopted‘, all coming within the scope of the claims
which follow.
to form a unitary structure, said members in
integral therewith and telescoped together to
provide a plurality of refrigerant passages
through the structure, means for connecting an
'
What is claimed is- as follows:
-
end of one .of said passages to an end of another 5%
l. A cooling element for a refrigerating system
comprising in combination, a plurality of metal
?n members each having a tube portion extending
of said passages at one end of the structure,
means for connecting the other end of said one
of said passages with an end of still another of
therefrom, said ?n members being superimposed said passages at the other end of the structure,
said last named ‘means forming a header com
' one upon the other with the tube, portions there
of teles'coped and secured together to provide municating with all of said plurality of refrig
a closed refrigerant passage extending through - erant passages and being provided with a refrig
the element, a pipe disposed within said refrig
erant outlet connection, a pipe within one of
65 erant passage, said pipe. having a crevice in its said refrigerant passages and provided with a
top surface and extending substantially through-,
db
cluding ?n portions having tube portions formed -
plurality of outlets for distributing liquid refrig
erant at a plurality of points along the length
outthe length of the pipe, means formed in
tegral with the tube portions of said ?n members of the said one passage, a liquid refrigerant inlet
‘for supporting said pipe in spaced relation to o connection for said cooling element, a refrig-'
to the walls of said refrigerant passage, and‘ said erant passage communicating with said pipe and
meansv cooperating with the crevice in said pipe with said liquid refrigerant inlet connection for
to provide a plurality of spaced apart openings conveying incoming liquid refrigerant to said,
throughout the length of said pipe for discharg
element directly to said pipe, and a. conduit hav
ing liquid refrigerant into said refrigerant pas
ing one end thereof connected to the lower por
75 sage at-a plurality of spaced points.
tion of said cooling element and having its other
2,134,605
end communicating with said, liquid refrigerant
plurality of refrigerant passages through the
inlet connection, said other elidof said conduit
being constructed and arranged to cause liquid
structure, means for connecting an end of one
of said passages to an end of another of said
,passages at one end of the structure, means for
refrigerant ?owing into the cooling element to
create a suction in the conduit for recirculating
liquid refrigerant from one part of the'cooling
element to other parts thereof. _'
5. A cooling element for a refrigerating sys
tem comprising in combination, a plurality of
10 unidirectionally nested members secured together
to form a unitary structure, said members in
cluding ?n portions having tube portions formed
integral therewith and telescoped together to
provide a plurality of refrigerant 'passages
15 through the structure, means for connecting an
end of one of said passages to an end of another
of said passages at one end of the structure,
means for connecting the other end of said one
of said passages with an emf of still another of
said passages at the other end of the structure,
said last named meansforming a header com
municating with all of said plurality of refrig
erant passages and being provided with a refrig
erant outlet connection, a pipe within one of said
refrigerant passages and provided with a plural
“ ity of outlets for distributing liquid refrigerant
at a plurality of points along the length of the
said one passage, 9. liquid refrigerant inlet con
nection for said cooling element, a refrigerant
passage communicating with said pipe and with
connecting the other end of said one of said pas
sages with an end of still another of said pas
sages at the other end oflthe structure, said last
named means forming a header communicating
with all of said plurality of refrigerant passages
and being provided with a refrigerant outlet con 10
nection, a pipe within one of said refrigerant pas
‘sages, means formed integral with the tube por
tions of said members for supporting said pipe
in spaced relation to the walls of said one of ‘said
refrigerant passages, said pipe having a crevice 15
in its top surface and extending substantially '
throughout the length of the pipe, said means
formed integral with the tube portions of said
members cooperating with the crevice in said pipe
to provide a plurality of spaced apart openings 20
- throughout the length of said pipe for discharg-'
ing liquid refrigerant into said one of said re
frigerant passages at a plurality of spaced points,
a liquid refrigerant inlet connection for' said‘
cooling element, and a refrigerant passage com
municating with said pipe and with said liquid
refrigerant inlet connection for conveying in
coming liquid refrigerant to said element directly
to said pipe.
‘
7.-A cooling element for a refrigerating sys-u)
tern comprising in combination, a plurality of
said liquid refrigerant inlet connection for con
veying incoming liquid refrigerant to said element . metal ?n members each having a tube portion
directly to said pipe, and a conduit having one extending therefrom, said ?n members being
end thereof connected to the lower portion of superimposed one upon the other with the tube
, said header and having its other and disposed in
40
portions thereof telescopedand securedtogethen
the path of liquid refrigerant ?owing into said ' to provide a closed refrigerant passage extending
inlet connection, said other end of said conduit transversely to the ?n members, a pipe disposed
being constructed and arranged to cause liquid \ within said refrigerant passage, said pipe having
refrigerant ?owing into the cooling element to a crevice therein extending lengthwise thereof,
means formed integral with certain of the tube 1
create a suction in the conduit to thereby re
circulate liquid refrigerant from one part of the
cooling element to other parts thereof.
6. A cooling element for a refrigerating system
comprising in combination, a plurality of unidi
rectionally nested members secured together to
portions of said ?n members for supporting said '
pipe in spaced relation to the walls of said re
frigerant passage, and said means cooperating
with the crevice in "aid pipe to provide a plurality
of spaced apart openings for discharging liquid 45
refrigerant into said refrigerant passage at a'
?n portions having tube portions formed integral plurality of points along the length thereof. JOHN KARMAZIN.
therewith and telescoped together to provide a
form a unitary structure, said members including
Документ
Категория
Без категории
Просмотров
0
Размер файла
803 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа