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Патент USA US2110430

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March 8; 1938.
‘ 5, v_ SWANSON
2,110,430
DISTRIBUTOR
Filed March 5, 1937
55
'
4
2,110,430
hiéiiied Moi. 8,. .1938 t
S PATENTPOIEFICE ' " .v
>r
‘STATE’ 2.110.430
Sven V. Swanson, Forest Park. 111., asaignor to Be- ,
frigeration Appliances, Inc., Chicago, 111., a‘ col‘:
poration of Illinois .
‘ Application March5, 1as'I,.-sorlsl-No.¢ 129,244
"12 claims‘
' I
(or. cz-izeij
“ "
tributor constructed in accordance with my in- w
My inventionv relates to cooling units of- re
vention;
frigeratingw -'s'ysterns wherein liquid refrigerant
"
.
I
i.
.
.'
'
Fig. 2 is a cross sectional‘ view taken on the '
is‘supplied: to ‘a duct or coil of the'cooling unit
-* to produce the cooling effect,'and has reference
line 2-2 of Fig. 1;
5 more particularly to ‘facilities for ‘supplying equal
nurlisiber of superposed banks of. refrigerating
amountsof refrigerant'to each of-several banks a
of
coils.
'
1'
a
I
..
a
‘
‘ ‘
'
Fig.3 isan end view‘ of a coil‘ unit with a 's'
coi;'..~'
‘
'
'
I,
Fig. 4 is a‘ view taken on the line l-J?of _
,
In refrigerating systems of the type ordinarily
used a refrigerating medium is employed which,
Fig. 3 showing the take-off connections from the ‘
19 after compression. is introduced in liquid form
‘Fig. 5 is a view taken on the line 5-4 of Fig. 3 > ‘
coiluniti:
through an expansion or control valve into the
.
t.
m
._
10
coils of a'lcooling-‘unit wherein the refrigerant
sho'wingsthe expansion valve and ‘the connec
tions' therefrom to: thecoil'. unit for supplying
is evaporated and converted ‘into. gas, thereby
the refrigerant thereto; and "
'15- coils by the heat absorption which occurs in
nections of Fig: 4 to insure uniform. suction at
all the tube outlets.~
ment, wherein normaloperation requiresl'a ‘high
rate of heat transfer,
refrigerant is prefer-r
valve for each bank] of ,coils it is desirable to
'
.
supported by end ‘plates ll‘ with fins or plates 25
IS on said pipesbetween the end, plates It in
accordance with the usual practice. Each bank
_ in the supply of'refrigerant’ to each bank of
'
.
tion, connected in series by return bends l3' and I .
25 tributor which will properly proportion or- equal
"
'
coilspeachbank of which comprises four later
ally spaced parallel pipes ii, at the same eleva-l
' provide a "single expansion valve with‘ a. dis
"
"
merai l0 indicatesva multiple bank cooling unit 20 ’
as a whole. having four superposed banks ll of
- necessity of-employing a separate expansion
’
-
Referring to ‘the drawing the reference .nu
20 ably introduced separately into a number of ‘par
allel banks of coils and in order to avoid the
‘"
.
may be employed inplace of the take-oi!» con- ‘
the conversionof the liquid into ‘gas. ‘In some
cases. as for example in air conditioning equip
coils.
.
Fig. 6 is a sectional ‘view-of a header which 16
loweringthe temperature of -> the cooling unit or
of coils has an intake end 16 to which refriger
>
‘ Howevenfas somevevaporation begins to take
place as the ‘refrigerant is discharged from the
ant is supplied and an outlet end I‘! :connected .
with a. compressor (not, shown). which with- 30
” expansion‘ or control :valve, the refrigerant be
draws’ the refrigerant gas. from the coils and
'
after compressing‘ and condensing same into ‘liq-_
uid form‘ returns. the liquid refrigerant through
the pipe l8 to the expansion valve l9 from which
comes'a somewhat turbulent mixture of liquid
and gas which‘ does not distribute uniformly
with ordinary ‘distribution facilities, and it is
it is supplied to the intake ends 16 of the coils. V35 1‘
’ necessary to‘ provide special distribution facilities
To insure equalization of the suction effect
of the compressor-on eachbank ll of the coils,
a manifold-arrangement as shown in Fig. 4, may
a which ‘will properly proportion or equalize the
supply or distribution of the refrigerant to the
various banksvof coils of the cooling unit.
It is therefore, an object of my invention to . be employed with two manifold branches 20
.
leading respectively‘from theoutlet ends I] of 40
provide-refrigerant distribution facilities for‘ re
the two upper banks ,ll ~ and from the outlet
> ends' I‘! of the‘ two lowerrbanks ii and each.
a single expansion valve to each of'several banks
branch 20 is centrally connected: to the opposite
of refrigeratingv coils.
manifold which‘ln turn is centrally connected 45
to the :pipe 22 which: 'lealds‘to the compressor
each
sothat
bankthe
of pipe
coils to
distancewofthe
the compressoroutlet
is the same.
,ll [of
Instead of the manifold arrangement'of. Fig; 4
"
‘
v ’
ends respectively of the’main branch 1L0! the . ;
i
Another object of my invention is to provide
a refrigerant distributor wherein excess gas is
)removed from the refrigerant before distribution.
"A further object of my invention is to provide
a connection of “the. coil outlets with the return
50 pipe. to the compressor whereby uniform suction
at all the outlets is assured, these and other
objects being accomplished as hereinafter de
a header." as‘ shown in Fig. 6‘ may be provided, 50 3
said ‘header being hermetically closed at both
‘ends in any convenient manner and‘ provided
with a central partition,“ extending from end
scribed, reference beinghad to the accompany- ' to end thereof. At .one side of the partition 4|
ing drawing, in which:
as
-
,
_
.
,
Fig. 1 is a vertical sectional view of a dis
g
the header has the tubes l2 connected thereto 65
‘9,110,430
' aim-‘at ‘the-other side of the“ partition the pioel
It leads centrally from" the header,‘ and the said, by a valve II and connected'by thepipe'll
1 partition has the Openings" therethrough which the pipe 2,: which‘ leads from the cooling unit II
are'g‘equally ‘spaced from" the outlet 2‘! ‘and the to the compressor. Said pipe 22 also hasileomed
thereto the.
‘ tichulbl‘l of thefelpan- »
"upper opening it is
sion valve whereby the supply or refrigerant iur- g,V
equally spaced
the .nishedbytheexpansion
two upper. pipes‘ l2 while'the
lowerbetween
opening,"
vis ‘equally spaced‘ between the two ‘lower pipes
I! so that the path from all-jot thelpipes I! to
‘the'outlet?
.
10
ispl
_‘
Separate pipesfld‘q/preterablyvoi'
lliscontrolled.
.
e
,
.
.
.
V
>
‘
,‘
. While I have'shown and described autism‘
_
length,
.y
.
7
v \ 1
Y are connected to the ril?wiitlve inlet ends I. of
coils and‘ supply‘ refrigerant there
,» mil-om the distributor-Ilwhich in turn
‘refrigerant
siong'valve ll; ~
‘
the pipers from the expan-r 5;;
.This distributorgwhichih :shown- in
‘in '
csl'igs; 1 and 2 comprises ‘a cup-like housing" with
a cap or cover II
‘
31 claim as my'invention: '
Y
1.Inadistributorottheclassdescribed.tho ll‘
'com'hinatlonoiahousing'withachainberthere- . I;
lnif'said'housingbcing formed to. provide at the
thereto in a hermetical-l
, over?owsinto
V
ingireservoir
botto'sn'ot thewhich
c
a cavitywi'th‘a
said cavitpanr ‘
'24 ‘from theyalveis .h
Je
'
inlet
at
the
top
otithe
housing
and
Icading‘into
_cured centrally tojthe cap or cover 20 as shown;
‘ori?ce
Y
communicates‘with the upper-vendor a‘ooni said chamber thereofvan
“ cal recess‘ II ‘in thel under side 01' said cap‘or"?which discharges into1the,_.a!0resaid .
.
, I! settled manner‘aslndicated at ,?giandlthe'piva V
‘
_
.Under
Illand cen
trally injthe housing 28 is anupstandlng annular
‘2.1 ‘which
In a. distributor»
I the reservoir
20 forming in e?'ect an annular.‘ reservoir ' into
,
w surrounding; ‘an
from they bottom @oi’ .
.
.d ‘the ,clmildmrll
t . _
the
‘
combination of a housingylth ll chamber
. ‘
:which 'saldinner cupv the pipes ll‘ lead to ‘their in,said housing: being formed to provide
“respectivetb'anks' olticoilsgssaidv pipes beingher- >
~
‘metically secured to‘ the 'bottoqm'oi-the-lhousing bottom of the chamber a cavity with
ing. reservoir which over?ows intollaid cavlthm. ”
‘ "'?ijat
inner?cup
equalportion
intervals
thereof
around
i'ormed‘byj
the bottom
the of
?ange ‘inlet at‘ the top-'otthe housinglnd
‘20. Thebottoin wall of 'saidinner cup is'cene
trally'torined-with'a ‘threaded recess II in which
unilorinly
to‘divert'in?ow
between
saidchaniberthereot,
said
around
inlet
trornssaidinletfintoithe-rslervnir
and
thelcavityland‘saidlhoming
a‘spreader
the. cavity-and
in the
is engaged the 'lower.~-threaded¥end1oi the stem
, it which‘ is provided atithefluppenendi with a
having .a plurality. otoutletsjatthez‘hottoni uni
“ conicalaoi a somewhat ?atter‘ conie
cal i'orm
coni
"
28 or ‘the (cap j
formly; arrang
i
:trom‘
or cover llandwhich prolectsiinto said recess
"to ‘form between‘the recas '20- andispreader
, I 32‘ acontractediannular
refrigerant enterlngthe
passageway"
distributor. is‘
bydirectwhich
ed" annularlyr'downward into the
reser
voi'ribetween'the ?ange .yllhand the ‘outer; wall of
housing "II honrwhichvrcaervoirithe refrig
the Sinner’ cup 9
the
?ange II; It‘ is‘ to'be 5notedglthat=the discharge
. eranti over?ows into
vf'roi'iigthe annular;
v
the
wardlylbeyond
concentrically
top of the housing‘andleadingintoctbsjtop
the aforesaid‘ cavity; an‘
timlniniizesuadisturhancetlnd
at'ythe apex!’
a
promotes quicscenceiot the liquid refrigerant‘ in ‘1 ot the said conical
conical
spreader
nroiwtlnalntqlmdrcqwll?
‘'
reservoir-Lao asto'ilnsure uniformity ‘
'.
~ otlfout?owjover-fthew?ange 'lllninto the central cess and forming therewith. an annular‘
‘cup Jm- ‘basin from ‘ virhlchfth'es-‘ontletv pipes “lead.
' Preferably the innergsurtacepof the lwalltilis. ~' directed into the, reservoir, and saidho'iuslng'h’av'r
ing
arranged
wayathrough
plurality
‘around
which
or when»
the
thein?owirom'said'dnlet'is'
center
thevbottom'
"ol‘ithe cavity
' sloped
at the-‘bottom and; the ‘stem'provided with '
‘
"
, Va ?ared‘shoulder. :abovethe bottom ot'the inner. ‘
' - ‘g cup as shown to-directcthe over?ow from the an- ‘
nular reservoir to
Outlets
'thelzbottom of
xiobviouslyfthe distributor 2t
set‘in a
the
we
>
.
‘combination
leading.
iplnva'distributorvoi"
‘fromofthe_bottoln
ahousingwith,
otjsaid
u-cljassy
a cavity
described,
is}; A‘ V ' ‘
~ in and an inlet leading‘ into' the-‘top thereoniaid
substantially'level position' so thatthe over?ow I housins- beills.
‘from the annularreservoirinto‘theinner: cupjis’ 7
.
k
,
‘provide'at
p
a i
t
‘unilorln around »they?ange,i “Land when so’ set’ 4 over?ows into said cavity
which '
_
1*
PIDJecting' up; “ 7
II “is accordingly-1‘ equal» and
'‘ ~ ‘at
wardly.
its upper-end
i'rolnthe center
a de?ector‘in'thepath
of
cavlty‘and voi';,ths v:1
‘
fthesupply‘ot
:rei'rigerantji'to each of the pipes
‘ in?ow
inlet and
"?ow-isdlrected into the
_
v ~ Preferably.‘ .a 1 clean‘ is than’ nor-ii the ?m-; housing having a plurality of commit the ‘bot
‘ terior ‘of ‘the ‘distributor 28; at thelrtop-iof‘thej
:char‘nber therein to remove~ercess gas‘trom the
' refrigerant beforeudistribution- thereot-.:to the
pipes“ and forums purpose‘the cap or cover 20
‘ 76
is providedwith albleeder'passage l4 controlled
leading
’ ‘ 'cijmm the bottom‘ 0!.
reservoir over?ows.
cavity into
'
5.-In ‘a refrigeratinrsystem, the‘
'
of a cooling unit comprisinga plurality of
rate-‘coils, each having a separate. outlet connected 1‘ ‘v '>
3
2,110,480
to a common discharge pipe, and means for sep
arately supplying refrigerant to each coil from a
common source, said means including a distribu
tor comprising a housing with basins therein
through which refrigerant supplied from the said
common source ?ows consecutively, said basins
being arranged to over?ow one into another, and
the last basin of the series having separate re
frigerant conductors leading therefrom tov the
10 respective coils.
6. In a refrigerating system, the combination
of a cooling unit comprising a plurality of sepa
rate coils each having a separate outlet connected
to a common discharge pipe, and means for sepa
15 rately supplying refrigerant to each coil from a
common source, said means including a dis
tributor tov which refrigerant is supplied from
said source and having separate refrigerant con
ductors leading therefrom to the respective coils,
20 said distributor comprising a housing with a
chamber therein divided at the bottom into two
basins one of which said basins has the aforesaid
conductors leading therefrom and’ the other of
which said basins receives refrigerant from said
25 common source and. ‘overflows into the basin
from which said conductors lead.
W. In a refrigerating system, the combination
of a cooling unit comprising a plurality of coils,
each having a separate inlet connected through
30 a distributor with a common source of refrig
erant supply, and each of said separate coils hav
flows into the basin, a plurality of outlets lead
ing from said basin, and an inlet leading into the
chamber and discharging into the reservoir
against a side wall of the reservoir remote from
the outlets.
'
'
‘
9. A distributor of the class described, com
prising a housing providing a chamber having
a plurality of outlets equidistant from the sur
rounding wall of the chamber, and inlet means
having an annular discharge ori?ce positioned to 10
discharge against and uniformly‘along said sur
rounding wall.
10. In a distributor of the class described, the
combination of a housing having a' chamber
therein, a plurality of outlets leading from the 15
bottom of the chamber, an intake leading into
the chamber, and spreader means for directing‘
and distributing the discharge from the intake in
an annular stream surrounding the outlets at a
substantially uniform distance from all the out
lets.
11. The method of equalizing the distribution
of a liquid refrigerant from an expansion valve
' to the separate coils of a cooling unit, said method
comprising simultaneously discharging the ire 25
frigerant in a thin sheet from the expansion
valve and so collecting the same as to form a quiet
pool, ‘directing over?ow from said pool in a‘ thin
sheet over an edge portion thereof remote from
the place where the refrigerant is discharged into 30
the pool. and conducting equal amounts of the
over?ow of refrigerant separately to the respec
ing a separate outlet communicating with a com
tive coils of the cooling unit.
mon discharge pipe, and connecting means inter
» 12. In a distributor of the class described, the
posed between the latter pipe and the coil outlets 35 and comprising a header closed at the ends‘and combination of a housing having a chamber
having a central partition extending from end to ‘ therein, a plurality of outlets leading from the
ing therefrom at the other side of the partition at
an equal distance from the two spaced openings
bottom of the chamber, an intake in the top of
the chamber and directed towards the bottom of
the chamber, and conical spreader means within
the chamber and located between the intake and
the outlets and disposed for directing and dis
tributing the ‘discharge from the intake in an
through the partition and each of said openings
being equally distant from two coil outlets.
sutlg‘stantially uniform distance from all the out
end thereof andvprovided with two spaced open
ings therethrough, said header having the outlets
of the coils connected therewith at one side of
40 the partition and the common discharge pipe lead
45
8. In a distributor of the class described, the
combination of a housing having therein a cham
ber with a basin and with a reservoir that over
20
' "
annular stream surrounding the outlets at a
le
SVEN V. BWANSON.
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