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Патент USA US2112870

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April 5, 1938.
2,112,370
A. WEILAND ET AL
SELF CONTAINED AIR CONDITIONING ROOM UNIT
Filed July 13, 1933
2 Sheets-Sheet 1
April 5, 1938.
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A. wElLAND'Er'AL
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2,112,870
SELF CONTAINED AIR CONDITIONING ROOM UNIT
Filed July 13, 1933
2 SheetsFSheet 2
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INVENTORS
.
AWE-ILAND
2,112,870
Patented Apr. 5, 1938
UNITED STATES PATENT OFFICE
2,112.87()
SELF-CONTAINED AIR CONDITIONING
BOOM UNIT
Alfred Weiland, Philadelphia, Pa., and Charles R.
Neeson, New Rochelle, N. Y., assignors to Bald
win-Southwark Corporation, 'a corporation of
` Delaware
-Application July 13, 1933, Serial No. 680,182
16 Claims. (Cl. (i2-129)
This invention relates ,generally to air condi
tioning apparatus of the self-contained room
unit type employing a refrigerating system hav
ing a compressor, an evaporator over which room
5 air is circulated and a condenser cooled by out
10
to the outside, although this air stream may if
desired be arranged to cool only the condenser or
the compressor or its lubricant cooling coil.
Another object is to provide not only the self
contained passage within the unit for conducting 5
outside air therethrough but also to provide an
side air, the invention relating more specifically
to improved means and arrangement of elements
whereby the unit will operate quietly and ef
improved inlet created by having a cabinet suit
ably enclose the unit in preferably open spaced
iiciently.
relation thereto with little or no contact there
‘
It is of course highly desirable that air con
ditioning apparatus of the type located in the
room to be cooled should operate quietly. While
it is well known that boxes or other forms of
enclosures are sometimes used to house the usual
15 noisy elements of air conditioning apparatus in
case such elements are placed in the room or
with and'preferably with the lower edges of the 10
cabinet slightly spaced from the i‘loor at the
front and two ends of the unit or portions there
of whereby room air may circulate beneath said
lower edges and thence upwardly into the unit.
The cabinet thereby serves the further function 15
of a secondary enclosure for the compressor en
adjacent thereto, yet such prior arrangements
closure and also acts as a baille against noises
are usually of an awkward character and con
sume an excessive amount of space and require
issuing from the air circulating mechanism.
A further object is to provide suitable means
for ñltering the air in combination with our im
proved arrangement of air passages and noise 20
pressor is remote from the room cooling unit. silencing means, and also to provide in combina
The objection of excessive space and complicated _ tion .with these air passages improved means for
supplying fresh air to the room.
installation piping is overcome by the use of self
Other objects and advantages will be more ap
contained
units
especially
of
the
type
employing
25
25
an air cooled condenser but the silencing of such parent to those skilled in the art from the fol
special installation piping, this being particularly
20 true with those systems where the motor-com
a unit requires more than the mere provision
lowing description of the accompanying draw
of an enclosure for a noisy element such as a
ings in which:
Fig. 1 is a perspective of our improved ar
rangement partially broken away to show details 30
compressor. For example, in our present inven
30 tion a compressor enclosure is arranged in such
a manner that it is an integral and coordinated
of construction;
`
part of the entire unit so as to not only silence
Fig. 2 is a vertical longitudinal section through
the compressor but also functionally cooperate
one end of the unit showing the manner in which
our improved arrangement cooperates with make
up or Ventilating air supplied from the outside 35
with the unit to form separate air passages for
35 both the room air and outside condenser cooling
air particularly in combination with an outside
air duct;
`
open spaced relation thereto and substantially
Fig. 3 is a vertical transverse section diagram
matically illustrating one relation of the cabinet
physically independently thereof. Hence it is
to the unit;
» cabinet placed over the unit in substantially
40 seen that a desirable self-contained room unit
must have various phases of operation eiîectively
Fig. 4 is a perspective o1' a unit with the cabi- 40
net omitted and embodying a modified ñlter ar
coordinated in order to function eiiiciently in ` rangement for enclosing the fans and for also
_ controlling and directing the air flows and to also presenting a relatively large filter area to per
quiet not only the motor-compressor unit but
45 any sounds caused by flow of air through the
passages, and it is one object of our invention to
accomplish the foregoing in a highly eü‘ective
manner as above indicated.
.
A further and more specific object of the in
50 vention is to provide within the unit and in co
mit a relatively low air velocity therethrough to
reduce air resistance.
. ' 45
Fig. 5 is an enlarged end View of the fresh air
outlet and valve taken online 5_5 of Fig. 2.
The invention as illustrated herein is partic
ularly adapted for a room cooler unit of the gen- '
eral form shown >in the application of H. L. 50
Galson, Serial No. 648,772, filed December 24,
operation therewith an improved substantially
complete and self-contained passage adapted to . 1932 together with the improved fabricated struc
house the motor-compressor unit and condenser ture for supportingy and housing the various re
so that they may be cooled by air ñowing from frigerating and air circulating devices such as
55 outside of the room through the unit and back shown in the application of A. Weiland, ñled 55
2,112,570
June 29, 1933, Serial No. 678,242. Hence the
details bf construction and arrangement of parts
inlet 22 formed in backplate I3 and thence'ñows
downwardly preferably over motor-.compressor
herein, except as otherwise noted, are to be con
unit I0' and thence inwardly through a suitable
sidered the same as shown in said Galson and
opening 23 in-end standard 2 to blower 5 from
which it flows upwardly through duct 8 and over
Weiland applications.
Hence it will suffice for the purpose of this ap
plication to describe only generally certain fea
tures of the unit although it will of course be
understood that the present disclosure is merely
10 illustrative of one speci?c embodiment that the
invention might take.
'I'he room. cooler unit is
4of the type placed preferably within the room
to be cooled, adjacent any suitable opening in the
wall such for example as a window whereby out
15 side air may be used to cool the condenser.
The unit comprises a base I having standards 2
and 3 preferably formed of sheet metal extending
for the full depth of the base I and supporting a
room air fan 4 and outside air fan l. The blowers
20 for these fans are actuated preferably by a com
mon motor 6 suitably supported by base I. Blower
4 communicates with an air duct, generally indi
cated at 1, supported horizontally between the
standards 2 and 3 and a similarly supported air
25 duct 3 communicates with blower 5.
It will be
noted that the blowers communicate with `their
respective ducts at opposite ends thereof, i. e.,
blower 4 communicates with duct 'I at the end
thereof which is adjacent to standard 3 while
blower 5 communicates with duct 8 adjacent
standard 2. Standard 2 may be formed in any
suitable manner to provide a wall or partition,
preferably from al single piece oi' sheet metal, so
as to c'ooperate with our improved motor-com
pressor enclosurel to form a definite passage in a
manner to be described later.
`
Supported over passages 'I and 3 are respective
ly heat exchange elements 9 and I0. When the
unit operates as a room cooler, element I9 is a
40 condenser and element 9 the evaporator, these
being suitably connected through any .suitable
trap system diagrammatically indicated at 9' to
the motor-compressor unit I0' to eil'ect the usual
refrigerating cycle. Suitable sheet metal ducts
45 II and I2, with connecting end sheets I3 and I4
provide a passageway in which the evaporator 9
and condenser Il are disposed, whereby air flow
ing upwardly through passages 1 and 3 will flow
over the condenser and evaporator. 'I'he passage
50 II for evaporator 9 is uncovered at the top to
permit the air to flow freely into the room. A
suitable outlet opening is provided in the top of a
cabinet II to register with the open top of duct l I.
However, a closure I6 is provided over duct I2 so
55 that air flowing therein is directed outwardly as
indicated by arrowed line I6' through suitable
openings I'I in a backplate I8. This backplate
condenser I0 to the outside through a suitable
window duct (not shown) connected to outlets Il.
To more positively define this path of outside
air and also cause the passage therefor to be
self-contained within the unit, while at the same -
time effectively providing a simplified noise silenc
ing enclosure for the motor-compressor unit, we
have provided specifically a three-sided enclosure
member generally indicated at 23’ having a top
24 and sides 25 and 26, although various other 15
arrangements and number of sides may be em--
ployed in accordance with the disclosure herein.
This member may be formed of sheet metal or
other suitable material and may be provided
with sound insulating material generally indicat 20
ed at 21 on either the inside or outside or both.
’I'he top and sides are preferably adapted to over
lap not only the edges of standard 2 but also por
tions of the end plate I3 or its insulation while
suitable provision may be made to secure the en 25
closure to ,backplate I8.
The enclosure also
preferably fits down over the sides of base pan I
asindicated at 21’. From this it is seen that the
outside air may iiow through the unit in a posi
tively defined passageway formed partly by the ,30
substantially noiseproof enclosure 23’ which co
operates with a part of the unit structure such .
as the standards 2, end sheet I3 and back wall I8.
To eifect further silencing of the noise and at
the same time provide an improved room air inlet 35
to the unit, we have provided the cabinet I5 which
is supported preferably on the ñoor in slightly
spaced relation to the unit and the floor. 'This
arrangement not only prevents any substantial
transmission of vibration from the unit to the 40
cabinet but also provides a secondary enclosure
for the motor-compressor enclosure 23', and
further the space 29 beneath the lower edge of the
cabinet permits room air to flow thereunder as an
inlet preferably entirely around the three sides of
base I. The air passing underneath the front
edge of the cabinet may flow inwardly to the
blower 4 between end standards 2 and 3 at the
front side thereof while the air passing beneath
the side edge of the cabinet ilows to the blower
4 through a suitable fan inlet formed in end
standard 3, or if desired all air may be made to
flow into the blower through said latter inlet thus
soy
permitting the front space between standards 2V
and 3 to be closed by a piece of sheetmetal in a 55
manner that will be apparent hereinafter. If de
sired, the cabinet I5 may have an inlet opening in
its side wall in addition to the space beneath the
is preferably secured to the standards 2 and 3 so
as to assist in forming part of the motor-com
cabinet edge, although the latter alone is pre
60 pressor enclosure, while the cabinet has a top and . ferred due to providing a diffusion inlet extending
60
front and end panels leaving an open back to be over a large area.
clom by the backplate. The cabinet may there
From this it is seen that the room air is
fore be easily moved over the front of the unit to caused to have a definite path formed by coopera
enclose the same, leaving open spaces or passages tion between the unit and cabinet without in any
65 such as I5' at the sides and ends of the unit, al
way interfering. with the path of outside air which
though the top of the cabinet is relatively closely remains self-contained within the unit. Also if 65
placed on top of the unit.
' f
for any reason it is desired to inspect the motor
. There is also provided suitable transversely compressor unit, it is only necessary to move the
arcuate filters 29 disposed longitudinally within cabinet I5 to one side and remove enclosure 23
70 room air duct 1 and outside air duct 9. Con
whereupon it is seen that the motor-compressor
deusateA disposal trays 2I are provided in each of unit is entirely open and readily accessible with 70
said ducts.
‘
I
Outside air normally flows inwardly, as indi
cated by arrowed line I3', through a'suitable duct
75 (not shown) leading from a window opening to an
l
out interference from obstructing walls, partitions
or other mechanism. 'I'he room air as well as the
outside air is also definitely ñltered through suit
able illtering mechanism such as 20.
2,112,870
However, if a relatively large filter area is de
sired for the room air with a resultant low velocity
through the filter, so as to reduce resistance to the
air flow and also provide more effective filtering
action than with high velocity filters, there may
be provided as shown in Fig. 4 one or more _fiat
filters 3D and 3|. The filter material may be
heid in suitable filter frames which may be merely
said unit a complete passage enclosing said com#
pressor and condenser to conduct cooling air
thereover, and a cabinet enclosing said unit in
spaced relation thereto and having provision
whereby room air flows beneath the lower edge of
said cabinet and into said space and thence over
said evaporator and back to the room.
3. A self-contained air conditioning room unit
comprising, in combination, a base, a condenser
and evaporator supported by said base, a com 10
may be suitably held against the end face of l pressor, means forming within said unit a sub
standard 3 preferably in slightly spaced relation stantially complete passageway enclosing said
thereto. These two filters not only accomplish compressor and condenser and arranged to con
the desirable _results above mentioned but also duct air inwardly from one side of said unit and
placed against the front edges of standards 2 and
10 3 and the front sides of duct Il. The filter 3|
serve to further reduce emanation of noise from
the blowers into the room particularly in coopera
tion with the cabinet. Instead of filter 3l, there
over said condenser and compressor and'then
outwardly on the same side of the unit, and
means including a cabinet enclosing said unit in
may be provided a piece of sheet metal to cause
spaced relation thereto and having provision
all air to flow to the blower through the end in‘et
as previously mentioned.
As shown in Fig. 2, fresh air is supplied to the
whereby room air flows inwardly to said space
from the outer side of said unit and thence over
room by diverting a small portion of outside air '
said evaporator and back to the room.
,
4. A self-contained air conditioning room unit
from one end of outside air duct 8. 'I‘his air comprising, in combination, a base, a motor-com
passes through a small opening 35, in the duct` pressor unit supported at one end thereof, a con
wall, covered by small pivotally adjustable disk denser and evaporator extending from said com 25
36. The air then flows into the open space be
pressor toward the other end of said base, means
tween the cabinet and unit to mix with the room for supporting said condenser and evaporator in
air and now through blower 4 and over evapora
vertically spaced. relation to said base, air cir
tor 9 to be cooled and dehumidiñed before enter
culating means disposed beneath said condenser
y
_ .
30 ing the room.
and evaporator for circulating air thereover, a 30
From the foregoing disclosures it is seen that partition between said compressor and air circu
we have provided an improved self-contained air lating means, and a noise silencing enclosure for
conditioning apparatus that is adapted to be said compressor cooperating with said partition.
placed in a room and operate not only. efliciently
5. A self-contained air conditioning room unit
but quietly due to the improved passage arrange
ment performing the dual functions of providing
a positive air passage and noise silencer with the
further advantage that the* construction is read
ily adapted to permit ready inspection or access
40 to the operating mechanism and present a pleas
ing appearance. It is also rseen that a positive'
passage is formed not only for the outside air but
also for the room air and that these passages are
created partly by the cooperation of the unit and
45 cabinet without the necessity of any annoying
sealing arrangements between the various mem
bers, _thus allowing a highly efficient device to be
made in a relatively simple and inexpensive man
ner without in any way sacrificing the many de
sirable and necessary characteristics and func
tions of air conditioning apparatus of the room
unit type.
The disclosures herein are also applicable in`
case the functions of the evaporator and con
55 denser are interchanged so as to cause the unit
to operate as a room heater.
It will of course be understood by those skilled
in the art that various changes may be made in
the details of construction and arrangement of '
60 parts without departing from the spirit of the in
vention as set forth in the appended claims.
We claim:
1. A self-'contained air conditioning room unit
comprising, in combination, a compressor, a con
65 denser and evaporator, means forming Within
said unit a complete passage enclosing said com
pressor and condenser to conduct cooling air
thereover, and a cabinet enclosing said unit in
substantially spaced relation thereto and hav
70 ing provision whereby room air may flow from
the room to said space and thence over said evap- _
orator and back to the room.
l2. `A self-contained air conditioning room unit
comprising, in combination, a. compressor, a con
76 denser and evaporator, means forming within
comprisingnin combination, a base, a backplate 35
extending upwardly therefrom, a condenser and
evaporator, means for supporting the same at
one end of said base in vertically spaced relation
thereto, air circulating means disposed beneath
said evaporator and condenser, a motor-com#
pressor unit supported at the other end oi said
base, means providing a lpartition between said
compressor unit and said air circulating means,
and a removable compressor enclosure cooperat- ,
ing with said base, backplate and partition to
form a substantially complete Walled-in space' 45
self-contained with the unit.
6. A self-contained air conditioning room unit
comprising, in combination, a base, a backplate
extending upwardly therefrom, a condenser and
evaporator, means for supporting the same at 50
one end of said base in vertically spaced relationl
thereto, air circulating means disposed beneath
said evaporator and condenser, a motor-coin
pressor unit supported at the other end of said
base, means providing a partition between said 55
compressor unit and said air circulating means,
a removable compressor enclosure cooperating
with said base, backplate and partition, and a
cabinet for enclosing said unit and for also en
60
Vclosing said compressor enclosure.
7. A self-contained air conditioning room unit
comprising, in combination, a base of relatively
elongated shape in plan view, an end standard
and an intermediate sheet metal standard sup
ported on said base, a condenserand evaporator
supported by said standards in spaced relation
to said base, air circulating means disposed be
neath said condenser and evaporator, a motor
compressor unit supported at one end of said base 70
adjacent said intermediate standard, and a re
movable enclosure for said compressor cooperat
ing with said intermediate sheet metal standard '
to form a substantially complete walled-in space
self-contained with the unit.
4
2,1 12,870
8. A self-contained air conditioning room unit
comprising, in combination, a base,-a condenser
and evaporator, means for vsupporting the latter
in spaced relation to said base, a compressor,
means forming a substantially complete passage
way self-contained with said unit for enclosing
comprising, in combination, a compressor, a con
said compressor, means disposed beneath said
denser and evaporator, means forming within
said unit a complete passage enclosing said con
denser to conduct cooling air thereover, and a
cabinet enclosing said unit in open spaced rela
tion thereto to provide a passageway communi
eating with said evaporator and having provision
condenser for circulating air through said com
- whereby room air flows beneath the lower edge of
pressor enclosure and over said condenser, and
said cabinet and into said passageway to pass
means disposed beneath said evaporator for circu
lating air thereover.
over said evaporator and be cooled thereby.
10
13. A self-contained air conditioning room unit
9. A self-contained air conditioning room unit
comprising, in combination, a base, a condenser
and evaporator, means for supporting the latter
15 in spaced relation to said base, a compressor,
means for enclosing said compressor, means dis
posed beneath said condenser for circulating air
through said compressor enclosure and over said
comprising,- in combination, a compressor and en
closure therefor, a condenser and evaporator,
means forming within said unit a complete pas
sage enclosing said condenser to conduct cooling
air thereover, and a cabinet enclosing` said unit
in open spaced relation'thereto to provide a pas
sageway whereby room air may flow therethrough
and thence over said evaporator.
14. A self-contained air conditioning room unit 20
condenser, means disposed beneath said evapora
20 tor for circulating air thereover, and ñlter means
enclosing a plurality of sides of said circulating _ comprising, in combination, a compressor, a con
means whereby air first passes through said ñlters denser and evaporator, means forming within said
unit a complete passage enclosing said condenser
before flowing into the air circulating means be
to conduct cooling air thereover, and a cabinet
neath said blower.
‘
10. A self-contained air conditioning room unit ' supported independently of said unit and in open
25
comprising, in combination, a base, a condenser spaced relation thereto to provide a passageway
and evaporator, means for supporting the»latter whereby room air may ilow therethrough and
1
in spaced relation to said base, a compressor, thence over said evaporator.
15. A self-contained air conditioning room unit
means for enclosing said compressor, means dis
30 posed beneath said condenser for circulating air comprising, in combination, a compressor, a con
through said compressor enclosure and over said denser and evaporator, means forming within said
unit a complete passage enclosing said condenser
condenser, means disposed beneath said evapo
rator for circulating air thereover, illter means to conduct cooling air thereover, a cabinet sup
enclosing a plurality of sides of said circulating ported independently of said unit and in open
35 means whereby air ilrst passes through said ñlters spaced relation thereto to provide a passageway
whereby room air may i‘iow therethrough and
before flowing into the air circulating means be
neath said blower, and a cabinet enclosing said thence over said evaporator, and means for di
unit in spaced relation thereto and to the floor, verting into said open space a portion of said
thereby to permit air to flow to said ñlters from condenser air to mix with said room air.
16. A self-contained air conditioning room unit
40 beneath the lower edge of said cabinet.
11. A self-contained air conditioning room unit comprising, in combination, complementary heat
comprising, in combination, a compressor, a con
exchange elements, means forming within said
denser and evaporator, means forming within said
unit a complete passage enclosing said condenser
to conduct cooling air thereover, and a cabinet
-enclosing said unit in open spaced relation there
'to to provide a passageway whereby room air may
ñow therethrough and thence over said evapo
unit a complete passage enclosing one of said
rator.
12. A self-contained air conditioning room unit
heat exchange elements to conduct cooling air
thereover, and a cabinet enclosing said unit and
spaced from said means to provide therebetween
a passageway through which room air ilows to
the other oi' said heat exchange elements.
25
30
35
40
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