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Патент USA US2115344

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,April 26, 1938.
Filéd June 14, 1952
Patented Apr. 26, 1938‘
Alfred E. Stacey, 11%, Essex Fells, N. J., assignor,
by mesne assignments, to Carrier‘Corporation,
Newark, N. J., a corporation of Delaware
Application June 14, ‘1932, Serial No‘. 611,087 I
1- Claim.
This invention relates to an-improved method
employed in a system for precooling con?ned
areas, more particularly the interiorsv of railroad
The general object of‘ the invention is to provide an improved method for lowering the .temperature of a railroad car, prior to occupancy,
and usually while it is standing in such places
as railroad terminals, train sheds, or at way-
10 stations. Under summer conditions, railroad
(Cl. 62-24)v
supported on blocks 1. ‘The casing 5 may be suit
ablyinsulated by covering it with cork (not
shown) or» other material having similar prop
erties, Ice may be loadedjwithin' the tank 6
through an entrance door 8 in the casing 5.‘ For 5
purposes of illustration, ice blocks 5 are shown,
although it isobvious that cracked ice or similar
cooling'm'edium could beused with equal facility.
From the bottom of the tank‘ 6, pipelllfleads
to the inlet of the pump ll, mounted in the 10
cars, especially those ‘made of metal, store up
space provided between the tank 6 and one side
relatively large quantities of heat, due not only
of the Casing 5.
to prevailing high temperatures, but also to sun
effect. When these cars, after standing exposed
Dump II. a pipe "leads to a series of cooling
00115 l3- The coils '3,‘ preferably having eX-
lo to the sun, are moved into a station and made
into trains, this stored heat is given up. In the
From the diseharge 0f, the
tended surface to promote heat transfer,- are 15
mounted on a bracket H attached to one side
still air of a railroad terminal, for example, this
heat does not freely escape and hence makes
‘Of the casing 5. Which bracket cooperates With
the top and Sides of the casing to form a pas
human occupancy of the ear almost unbearable,
sageway for air over the coils. From the bottom
20 This is particularly true of sleeping cars, in which
the berths are usually made up before the pa'ssengers board the train. The berth arrangement,
as well as the bedding,'curtains and partitions,
still further con?nes the heat and tends to
25 lengthen the time during which this heat would
_be dissipated by radiation. If, however, cool air
is forced through the ears, prior to occupancy,
the stored up heat will be removed and the metal
of the car itself will be cooled to a temperature
of the Coils '3, a Pipe It!» in Which is Suitably 20
positioned‘a series of nozzles 16, leads to a point .
above the ice in the tank 6.
A fan ll, driven by an electric motor or other
suitable means (not shown), is mounted in the
passageway formed between the top of the cas- 25
inc 5 and bracket “- From the discharge open-P
ing of the fan II, a conduit l8, preferably made
°1'_ canvas, 01‘ other Suitable fabric. sewed Or
‘Otherwise attached to hoops, is provided for the
30 below that of the surrounding atmosphere.
Hence,avery comfortable condition willbeestablished within the car which, even though the
purpose of conveying the air from fan H to the so
Point Of Usage. namely, the interior of the car
i9. Obviously, constructing the conduits of fab
train is standing still, will be maintained for a ' tie is advantageous in overcoming the numerous
period of several hours, Qnee the tram gets ‘difficulties encountered in using metal ducts. For
35 under way, the motion of air through and over example, this construction provides extreme flex; 35
the cars will tend to keep them reasonably com- ibility With maximum Simplicity. Further, the
conduits do not require a covering of cork or
Further Objects and features covering advantages in design, operation and making for maxl_ 40 ‘mum utility and ?exibility under varying conditions, more especially in railroad car cooling, will
be more apparent from the following description
of a typical form of the invention to be read inv
connection with the accompanying drawing which
45 shows a preeooling apparatus, in section, in association with a railroad car, a portion of the latter
, being broken away to better show the connection
Referring to the drawing, similar designations
felt to prevent “sweating” since the fabric itself
has excellent heat insulating, properties. Ac-
Window 29. the lower Sash being raised for this
purpose. The Conduit It will be Suitably at» ,
tached to the interior of the car, preferably at I
a point near its ceiling,v and its outlet, which 45
may be in the form of a nozzle, may be directed
toward an end of the car-
A second ‘conduit 2!, similar in construction
' to conduit i8, leads from an opening 22 in the
50 referring to similar parts, numeral 2 represents
easing 5 t0 the Window 2" 0r tO,aI1 adjacent
the side members of a truck mounted on axle 3,
carried by wheels 4. Mounted on side members
>2 is a casing or unit generally designated by
numeral 5. Within casing 5 and cooperating
one, and into the car I9 for ‘the purpose of
conducting air from the car to ‘the unit. If
desired, conduit I! may be laid on the ?oor and
conduit 2| terminate at the window.
55 with one side to‘ form a part thereof is a tank 8
cording to applicant's preferred method, the con- 40 :
duit '8 Will be led into the Car 19 through a
Assuming that the tank 6 has been charged 55
with‘ice, the" cooling unit is rolled to a position
adjacent a‘ railwayvpassenger car, the~ vwindow
> 10 is Opened, conduit II is inserted in and, if de
sired, attached to the upper part of the car‘ I!
andi'conduit vII is similarly inserted Within
same or an adjacent window opening and suit-'
’ ably placed in position.
Theipump II is placed in operationbv start;
' ing itsmotor (not shown)‘. *Cold' water-from
melting ‘ice is; therefore,‘ drawn through pipe‘ I.
(‘pm ‘ under
the in?uence of: pump ill; forced through
Dampers II are
provided for controlling the .l
volume of air admitted to the cooling unit from
the car ii, if and as desired. -
A pipe 24, in which is a hand valve II, is
vided in the bottom of the tank'for drainingoi! ‘
the melt;
Since certain changes in’ carrying ‘out the
above. process and in the constructions set forth, ~l ' '
which embody‘ the invention may be made with- is
out departing from itsscope, it is intended that
all matter contained in theabove description or '
I pipe i2, cooling coils II and discharged through _ shown in the,_-accompanying drawing shall be in
pipe II and nonlesgli over the blocks of icewin' sterpreted Vasillustrative and not in a limiting‘ : '_
all Starting the tan l'l induces a circulation‘oi’ airv 3 'Havingjdescribed my‘invention, what! claim I‘ i
from the car I! through conduit 2i," opening I2,
new and desite'to secure by letters Patent
the sprays i'romlnczzles ll, coolingcoils llyian' ‘ as
the United States is:
l1; and the conduit ll,-backrtor the interior of
the car, the path of the air"being"clearly in-' ~> ' a method ofcoolingarailroad 0.; consisting _~
"the'form‘oi aspray.;
dicated by the arrows on the drawing.‘ The-hot '7 in withdrawing air from. the Year at a point a
air from the car ll through conduit“; as above ‘ considerable distance below the ceiling level, con;
pointed out, ?rst 'meets' thesprays from nozzles .veying the air from said point of ‘removal to'?a
IL The large surface presented by theidroplets v' 'point
air-in direct
heat exchangethelcar;
in '
ofv cold water
cooling and jdehumidii'ying.
a1 great deal of
- indirect heat exchange with a'cooling medium
conditioning point to e?ectccob'
thenhpasses over the coils 3,.in which;‘obviously, at-said
and dehumidi?cation¢thereof,"~delivering the
is, the coldest:
and‘ its coolingzand dehu ing
dehumidi?ed ‘air to the car at appoint adjacent '
mldiiication' satisfactorily
before in
troduction? "to the car . is through the "91¢? ' °"
' (an H and conduit";
v V
of the point or withdrawal, thev?ow-o'f’ air discharged
into the
being directedtowardan' endotthe
:The water-,1 having‘ ‘absorbed the
' air in
the point oi’ withdrawal, and dischargitlz the air ;
within the car at a level ‘other than thitt?oiv the
throughvthe' coils and the sprays,
' .Vilows‘ down over the ice, gives up its absorbent
heat,_ and consequently 'jmelts the ice, ‘thereby
completing .the cycle of‘ heat transfer.v
" 'ALmEnE. sTAcEm'JaL'
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