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Патент USA US2133343

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Oct. 18, 1938.
E. P. BRus
Filed Jan. 10, 1934
2 Sheets-Sheet 1
5/77/49 IQBI'US
Oct. 18, 1938.
Filed Jan. 10, 1954
2 Sheets-Sheet v2
11mm) .“
£/7?//6 P. Bras
Patented Oct. 18, 1938
Emile P. Brus', Kansas City,‘ 'Mo.,‘ 'assignor,‘ by
mesne assignments; to Air Conditioning‘ Equip;
ment Inc.,"a‘corporation of Missouri‘
. vIil‘1cl‘aim. 1'0.
j ‘(Cl."62-_12_9)
1934. ‘Serial ‘mama
‘I'P . I
‘ My invention relates .to an air conditioning;
device and more particularly to a novel cooling
means'in combination with an air conditioning. I
One object of my invention is to provide an;
e?icient cooling means for use in an air condi
tioning device.
a novel air conditioning device ‘which maybev
made in small sizes so that portable unitsimayl
Other and further objects of Hmyinve‘ntion
following contemplates
description. the
15 cooling of a condenser or a heat exchanger,
through which the refrigerant ?uid ?ows by the
evaporation of water or other suitable liquid so
that the latent heatof vaporization ~may _-be
utilized forcooiing purposes. The evaporation
valve ll,v where it is expanded through refrigera
ating ‘coil 2 and returnedto the compressor ‘8, 10
through the line l8. “A tank 20 is supplied with
water 2| through ?lling connection 22,. The con
denser II is housed in a suitable casing 23:.whiclf1
is-providedatits upper end with a spray head
24 shown mostclearly in Figure 3. Spray headv
24 is connected by a pipe 25 to the water 2 i
in ‘tank '20.’ Line 25vIis controlled by valve 26‘.
is aided in myiinvention by a reduction of pres-'
sure which not only ‘assists in the evaporation
but is used as a means for jetting the liquid to
The lower portion of the casing connected
to vacuum pump 9 by line 21. The discharge
from vacuum pump 9 is through line-28 which.
leads outside the air space being conditioned.
When- a vacuum is pulledIon casing. 23, the air]
be In
the accompanying
into a ?ne drawings
' which
' for
Water through the ?ne spray holes ‘29 in. spray
pressure acting on the. top ofwaterZl will. force‘
head 24. The water in, a ?ne spray, being jetted‘
intoythe chamber 23 in which the condenser is
25 part of the-instant invention and are, to be read
in conjunction therewith, and .in-which- like ref~~
erence numerals are used to
in the various views:
indicate like parts‘ situated and into the space maintained under
Figure 1 isva sectional elevation of an air.
conditioning device embodying one mode ofv car-.
rying out my invention.
~ _
Figure 2 is a‘sectional view taken one. :lin
a Figure 3~is an enlargeddetail view of the
suitable?ns l2. The refrigerant" fluid a [is cooled
in the condenser or‘ heat exchange coil, il ‘in a
manner that ,will be hereinafter more‘fully de-II
scribed, and passes ,through‘IIline' ‘14, through‘
surgetank l5, through line l6, through expansion‘
Another object of my invention isito provide
be constructed.
is ‘compressed in compressor‘ 8 ' ‘and: passed »
throughlline i0. through a’ condenser coil or.
heat exchanger coil 1 l, which isqprovidedwith,
Figure 4 is a sectional elevation of an air
conditioning de'vicaembodying another mode of
carrying out my invention.
Figure Sis a'sectional view taken on a line _
.40 5—-5 of Figure 4.
More particularly referring now to the draw
reduced pressure by vacuum pump‘ 8, will beIva
porized in the form shown in Figure l; the Item-‘I
perature of the compressed refrigerant ?uid in: 80
line‘ ID will be such that the water will be com
pletely vaporized so that all. thatissues from
pipe 28 will be a?ne‘spray. I‘ It will be‘seen that
the efiect of jetting ?nely divided water over
the‘v extended surfaces-of thecondenser .HI and 35
the positioning of the condenser in aspace main
tained under reduced pressure causes ,‘a,very
e?icient and very compact cooling arrangement.
The. operation. of the form of the invention‘
shown in Figure 1 and Figure 2 will be obvious 40
from the foregoing description. The motor ‘I is
started and valve 26 is maintained closed until
ings, a suitable casing or cabinet I houses a re
i'rigerating coil 2 in proximity to which a blower , a vacuum or partial vacuum is applied in cham
ber 23. The‘valve 26 is adjusted so that the
' fan 3, driven by an electric motor 4 or other
water spray is“ that necessary for the desired
45 suitable means, is positioned. The blower is
adapted to blow the air to be conditioned over cooling effect. The motor 4 blows air over the
the refrigerating coil 2. The refrigerating coil refrigerating coil. The refrigerant ?uid is com
2 is provided with heat exchange ?ns 5 as is
customary in the art. A pan 6 is positioned
50 underneath the refrigerating coil 2 to cool the
moisture precipitated from the air due to its .
being chilled’ belowfgthe dew point. Aisultable
pressed and cooled in condenser H and expand
ed in refrigerating coil 2. Moisture precipitated
from the air being conditioned collects in pan 6
from which it is drained through line 30, whence
it passes into a body of water 2| within tank 20. v
In the form of the invention shown in Figures 4 s
motor ‘I is corin‘eeted‘ to~_drive a compressor 8
and a ‘vacuum pum M9; 3 The refrigerant ?uid in and 5, an expansion refrigerating apparatus is
the form of the invention shown in Figure 1 omitted and the entire cooling e?ect obtained by
the evaporation of the refrigerant liquid, which
may be water or any other suitable liquid. If de
an evaporation of the refrigerant ?uid, the effect
of both evaporations being to reduce the tempera
used to increase the cooling effect. In practice,
however, the device may be made of sufficient size
ture of the refrigerant ?uid which passes through
the refrigerating coil 38.
It will be observed that I have accomplished
so that water may be used. ‘The motor ‘| is con
nected to drive a circulating pump 3| and vacuum
the objects of my invention. I have provided a
cooling means for an air conditioning device
sired, a liquid more volatile than water may be
pump. 9. A tank 32, containing the refrigerant
liquid 33 communicates with circulating pump 3|,
10 through line 34. The refrigerant liquid is intro
duced through tank 32, through pipe 35, which is
provided with a sealing means 33 so that the tank
32‘ may be sealed after liquid has been introduced
thereinto. The pump 3| circulates liquid from
tank 32 through line 31, through cooling coil 38,
which is provided with a drip pan 6, as before.
A blower 3, driven by a motor 4 for passing air to
be conditioned over the refrigeratingcoil 38 is
noted. The refrigerating coil 30 is likewise pro
20 vided with heat'exchange ?ns 5. The refriger
which is efficient and compact. The spraying of
?nely divided water into the zone of reduced pres
sure substantially necessitates the vaporization of 10
Thus I am enabled to furnish the latent
heat of vaporization, water being vaporized from
the refrigerant ?uid, then cooled. In theform of
the invention shown in Figures 4 and 5, I obtain
an added cooling effect by evaporation of a por
the necessity of using a compressor. This has
ant ?uid, after passing through the refrigerating
the added advantage of giving a quiet device, free
from noise and, at the same time, to reduce the
coil 38, passes through line 39, through heat ex
changer 40, vsimilar to condenser ||. The casing
expense of the installation in that a small pump
and an ejector are substituted for a. compressor
23 is constructed as before and provided with a
and achieve substantially the same result in a
25 spray head 24 having a line 25 communicating
cheaper, quieter, and more expeditious manner.
This is of great importance further when a port
able device is made, especially those devices de
signed for conditioning living spaces in the home
and in the office where noise is extremely objec
with a tank 20, provided with water 2|- Line 25
is ?tted with a control valve 26. The interior of
casing 23 communicates with vacuum pump 9
through line 21. The discharge from the vacuum
pump S‘is through line 28 which terminates in an
ejector 4|. One leg 42 of the ejector 4| communi
cates with the interior of the tank 32. The re
frigerant ?uid, after being cooled in heat ex
changer 40, passes through line 43 into spray head
35 44, whence it is sprayed as shown in Figure 4.
tion of the ?uid, thus enabling the dispensation of
the‘ compression expansion, refrigerating cycle.
'This enables me to eliminate valves and to avoid
tionable and space is at a premium.
It will be understood that certain features and
sub-combinations are of utility and may be em
ployedwithout reference to other features and
sub-combinations. This is contemplated by and
is within the scope of my claim.
It is further
obvious that various changes may be made in de
The ejector will reduce the pressure existing with
in tank 32, the vapors passing from ejector 4|, “ tails within the scope of my claim without de
through line 45 to a point outside the space being parting from the spirit of my invention. It is,
In operation, the motor in the form of the in
vention shown in Figures 4 and 5 drives the cir-.
culating pump 3| and the vacuum pump 9. The
vacuum pump 8 pulls a vacuum win the interior
therefore, to be understood that my invention is
not to be limited to the speci?c details shown and 40
Having thus described my invention,‘ what I
claim is:
of the casing 23 so that the .water from tank 2|
‘An air conditioning device including in combi
is pulled and the enlarged space maintained at
nation, a housing, heat exchange means posi
tioned within said housing, means for maintain
reduced pressure. The water is thus vaporized,
the latent heat of vaporization being taken from
the refrigerant ?uid circulating through heat ex
changer 40. The refrigerant ?uid being sprayed
50 through the ?ne holes in pipe 44 also passes
throug an area maintained at reduced pressure
so that there is a partial evaporation of the re
frigerant ?uid. The vapors of the refrigerant
?uid and the vapors of the water from the inte
55 rior of casing 23 'pass outside of air space being
conditioned, through pipe 45.
It will be seen that a double cooling eifect is
achieved. We have an evaporation of water and
ing the housing under sub-atmospheric pressure,
means for supplying liquid to said housing, a tank,
a refrigerating coil, means for circulating a re
frigerating medium from said tank, through said 50
refrigerating coil and back to said tank through
said heat exchange means, a spray for spraying
the circulating refrigerating medium back into
said tank, means for maintaining said tank under
sub-atmospheric pressure, means for passing air 55
to be conditioned over said refrigerating coil.
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