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Патент USA US2408974

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I m. s, 1946.,‘
Filed May 8, 1943
3 Sheets-Sheet 1
m.. /
‘ CLIFFORD $.Coor.
F‘? a. E .
BY 7P7’;
Filed May 8, 1943
- 2,408,973
s Sheets-Sheet 2
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Fm. 4.
CLlF‘FORD 5. CoDY. a
0a. 8 194
x 6-
c. s. CODY
Filed May 8, 1945
3 Sheets-Sheet s
~ BY
Patented Oct. 8, 1946
Cliiford S. Cody, Spring
Westinghouse Electric ?eld,‘ Mass,v
assignor to ‘ '
East Pitts
, Pa., acorporationorporation,
of Pennsylvania ‘
Application May 8, 1943, Serial No. 486,136- '
(01.‘ 62-129‘) ‘ '
My invention relatesto air
A further-object
sible control knob ‘or handle.
‘ .
A still further object of my invention is to
produce an improved and inexpensive construc
d a‘ rear or outer portion [3
' ‘thereof extends outside of the roo
A still further object of my invention is to pro
is‘ adapted
A front or to rest on top of thecasing I I‘ (Fig. 3).
inner portion [2 of the casing extends
‘construction by which the
. The casing
is’ provided with side
walls l4 and I5, front and
‘ rear' walls ‘l6 and
I1, and top and bottom walls
I 8 and 39, some or all ‘of which may be detach
ablyv ‘secured to one another by any suitable
" means, not ‘shown.
'Within the casing H, there is provided a re
motor compressor unit 26
type well known in the ar may
by a motor M,
Fig. 4 is a section on line I]I—III of Fig. v1;
on line IV-—IV of Fig. 1;
Fig. 5 is a perspective view showing details of
internal construction;
Figs. 6, 7, and 8 are diagrammatic fragmentary
views illustrating three positions of the dampers
controlling the air ?ow;
Fig. 9 is a fragmentary view in front elevation
showing a control knob for adjusting dampers
of the apparatus; and,
'g. 10 is an enlarged sectional view on line
X~X of Fig. 1 showing details of construction.
to the‘ drawings in detail, there is
Fig. 1,. an outer casing H which en“
be of an enclosed
Blowers 2| ‘and 22,
?ow of'air over the
to prevent condensed moisture from collecting on
of the motor-compressor unit
the window sill and running down the wall of the
15 recompressed and recirculated.
as best shown in Fig. 1, the evaporator 21 is
Fig. 5, and
positioned between, and suitably secured to, the
rear wall 33 and the front wall section 46 of the
‘housing, 3| by screws or 22is
the ,'positioned
the back
33 and fan‘
the front wall section 48, and
into inner ‘and outer compartments,v with‘ t e
carried by the motor shaft 54, passing through an
blower 2|, the condenser 23 and the motor com 10 ‘opening 56 in the back wall 33 of the housing 3|.
pressor unit 26 disposed in the outer comparte
machine ' ‘ lIn the trontwvall section 48, there is provided an
ment, which may be referred to as a‘
-.air inlet-opening 55 which registers with the suc
compartment, and which extends ‘to w-‘thout the
.~tion- opening ofv the fan 22,
room, and with the evaporator
Theian 22,.»is-provided with a shroud 51 formed
in the inner compartment‘, which maybe- re.
resilient or nonresilient sheet metal, and ex
ferred to as the cooling compartment and-which
= tending transversely from the front wall section
inlet- opening
with'an" .andaidisr
extends toward or into the room.
48-to the back wall 33. One end 58 of the shroud
51 is bent and ‘secured to
ofthe housing of the evaporator 21 as best seen
charge opening 35 registering with the condenseg
fromFigs. 1_and“2.‘ "The other end of the shroud
.. 23. . The. openings.34..and .35 .may. ‘be .provi
51 is likewise bent‘to engage a ,slot'tll formed in
shown). '.On' the side .walll'l5
the bottom wall of the housing,- as best shown in
outer wall H is provided
34 registering with the
with . louvers. . (not.
2 |.. is. .~ another outside . air
I draws .air' through
adjacent . ‘the. blower.
inlet opening 36. The ‘fan 2 iblows it against. or
theopeningsI34 and 36 . and
through thescondenser 23 and .out .through‘ the
opening 35. "The opening. 36 iscontrolledby a
Theshroud 51, if made from nonresi'lientmetal,
25 may be rolled to the desired involute 'shapejand
isv retained in position byfbeing made. .t‘o'jabut
against correspondingly arranged and ‘trans
door“ or damper 31 which is constantly biased in
studs .01‘ bolts .
closing direction by means. of a. spring 38 on the 30 verselyedispose'dthrough suitably-spaced. openings 53 in the front
rod 39. on which. thegdamper 131, is hingedin any
48 and .the corresponding portion of
Likewise, the inner or room . wall section
the back wall 33.. If the shroud 51 is formed of
. suitable
end of the vunit is also provided at the bottom with
inletopeningMl controlled bya door
spiral path
de?ned .by
initially ?at
into its orig
or damper 4| hinged. on arod 42 andbiased into
the opening-40 by a spring 43 35 the bolts 62 and its. tendency to flex
(Figs 1). .The structureand operation. of ,the
willalso be hereinafter-more
- dampers<31 and 4|:
fully explained,
w To reduce the cost of manufacture and assem
bly; and to 'facilitaterremoval of the parts for
inal condition, causes. it,to abut against the tie
bolts 62. The studs 62 constitute stops determin
ing the shape. ofthe. shroud 51 and servetodraw
.thefront wall section.“ and the back wall 33
40 snugly against the. corresponding edges of the
replacement. and
shroud 51,..rigidly but.detachably .to secure the
shroud and corresponding walls of,th'e..housing
the motor M,
3| together. This also provides a boxlike struc
.ture which affords adequate support for the fan
and accessiblymounting
‘ing 3 l‘ for- conveniently
the fans 2| and-22, and the evapo
unitfwithinthe casingll. ' The
1 {raters-21, as‘ a
‘housing 3|, which is .best seen in
Fig. 5,‘ is pref
erably .formed of at-single blankof sheet metal
‘.122 .and .the: motorl.M. . Thewmotor. M .may be
45. secured to. the outer side of.the.wall 33 by any
suitablemeansv such .as the. brackets 64, A-?lter
desired’ strength. The blank is ?rst
- having -.the
.t 6. . is. disposed. . across. the. > front} of . he. suction
cut and then bent into a U-sha-peto form’ abot
opening 55 and is securedinpositiontby any
.suitablemeans insuch manner that, all air drawn
two: separate sections 146; and 46, The
back wall 133. and thefront
. .by. .the fan‘.
146; and 48.- aret-bentl (see Figs. '4 ‘and
6).,to merge .with .the dished. portion -.4!l'ofv the
bottom wall 44.
-;3|.1s supported
‘ g H .on=brackets
'- within the casi
50. The open
' ing- or space leftcbetweeni the juxtaposed vertical
they front .wall sections 146 , and 46 is
by of
a suitablyesecured partition 52 onever
v1tical- edge. of- which is ?anged and secured at
22-must. pass . through the ?lter.
| are regulated
bysimpli?ed means comprising a stud
naled in_ aligning openings in aibracket .111 and
|5.of. thecasing ||.
handle12 and a spring
.13..prcvides resistanceagainst unintended rota
tionalmovement. . To the stud 69' is rigidly se
cured a bell crank ‘having. divergent arms 14 and
16.. The arm v.14-rhas connected. to it one end of
. 52a to the-insideof the frontwall section 48, and 60 a.flexible.element~18, the. other end of which is
the othervertical edge of which is ?anged and
secured to the down“; or to an extension hook
secured to-thezinside of the wall section 46 as at
and cooling. compartments,
52b. . The machine.
of. the
~. on- ‘either side
back'wall. ,3 of the housing
- ‘3|; are‘ connected by .an ‘air:
passage 53'formed
.the bottom 44 of the housing 3| and the
casing ||.
* bottomJBofthe
zInzaddition-t-o' serving. as an air.;passage,~. as will
Similarly, thearm 16
has connected to it one .end ofanother. ?exible
element .82, the other end of which is likewise
> ..8||<carried by the door 4|.
31 orv to an extension hook
"84 carried by the door 31. I The ?exible elements
. secured to the door
.18 and Y82 passthrough openings 83 in the walls
'33 and _48lof the housing 3|.
described, the passage 53-, by spac
'be hereinafter 44 of the housing 3| from-the bot,
ing the bottom casing ||,-prevents.cooling of the 70
I vAssuming it is ,desired only to circulate the
-tom IQ of the
below, the: dew ‘point and. therefore
1 latter .to- or
.- prevents moisture condensation .on the outersur
.-face of the bottom .|9. which .wouldbeobviously
-. Heretofore ithasbeen necessary to
.insulate the bottom wall 19 with cork or the like
- room. air through the unitto. cool anddehumidify
, the .same,'-.the .knob'_.12 , isadjusted so‘ thatnthe
indicator 86 is at position A. In this position
ofthe knob'12, the arms 74 and '16, are in the position shown in Fig. 6, inwhich the door 4| closes
thetopening 9030f’ the passage 53, but in which
the opening 36 is not obstructed by the door 31.
While I have shown my invention_ in but one
form, it ‘will be ob 'ous'to those skilled in the art
that it is not so limited, but is susceptible of
various changes and modi?cations without de
27, and out through grill opening 85 in the top
the appended claims,
of the unit back into the room. The path of
WhatIclaim is:
movement of the air is clearly illustrated by the 10 .71.‘ Flu a room air conditioning unit, a casing
arrows in Figs. 1 and 2. In this position, the
having ‘an outer compartment and an inner
inlet‘ 36 isthe
2| draws
a refrigerant condenser in said
34 and
discharges it through the condenser 23 and
opening 35.
When it is desired to exhaust air from the
said inner compartment, said evaporator being
l5 operatively connected to said condenser, there
being a passage'connecting ‘said compartments,
to bring the door 4| into the position shown in 20 a conditioned air outlet leading from said evap
room air out through the openings 40 and 90 and 25 controlling the inner ‘end of said passage and
I the condenser 23 and out through the opening
means being ‘so constructed and arranged that in
35 . In its extreme clockwise position, as shown
one position of said actuating means said damper
in Fig. 7, the arm 14 abuts against a stop 11 30 closes said room air inlet and in a second posie
now appear as shown in Fig. 8. ‘In this position, 35 air inlet and the inner end of said passage.
thus drawn passes through the ?lter 6i; and the 40 tition between a front heat exchange compart
the opening 40 so that the fan 22 will continue
disposed within said U-shaped member near the
.to draw some room air through the opening 40 45 other end thereof, a sheet metal shroud dis
the passage 53, and the opening 90 (see arrows
in Fig. 1). The mixed air is then passed through
cooperating with said U~shaped member to form
a fan casing discharging air through said heat
completely to close the opening 49 so that the
ow of air over said condenser, and a motor in
of exclusively
the fan 22 into
utilized to‘ 55 said
said fans
machine compartment for driving both of
It will thus [be seen that I have devised a compact air conditioning unit of a balanced con-
3 In a mom air conditioning unit a casing
having a ?rst compartment and a second com
turning of the knob 12 to one of the positions 60 in said ?rst compartment, a refrigerant evap
the above description, that this is accomplished 65 air outlet leading from said ?rst compartment
?lter 66 with respect to the fan 22 and the evapo- 70 room air inlet for admitting air from a room to
airl'irit’o‘ or throughjisaid-unit eemprlsing'lanrst
damper ro‘r' 'cdritrollingi‘said' outside-air ‘ir‘xlet; a
unit» and discharging ‘it'iintoijthe'rooni through
second ‘damper iori'selectively controlling said
room-air inlet and theadja'cent ‘end of said pas‘;
said discharge‘ opening, a passage connecting: said
compartments, and rrneans for regulating the now
sage, and actuatingmeans for operatingisaid
of outside air‘ and'roorn'iair- into‘ andlthrougn
dampers‘, said actuating means and said damp;
one" or both of- said compartments "and through
ers‘ being so constructed and arranged that‘i'n
one position thereof, said inlets‘ are open and
said passage‘, said means'bein‘
said passage is closed, while in another position
arranged that, in one
said inlets are open and said passage" is closed
thereof said ro‘orneair inlet and said passage are
whereby outside air '
' die open‘ and said outside-air inlet is- at least'rpartly
closed, an'dlin' still another‘. position of said’ac
through said second compartment, while in a
tuating means ‘and 'said'd‘ampers, said outside
second position of said means, said room-‘air
airi inlet‘ and said passage are‘ open‘ and said
inlet and said passage are
room-air inlet is at least partly closed.
‘6. In a roomy vair‘ conditioning unit, a casing
enclosing air conditioning apparatus including
by said
said passage
and in
inlet and said passage are open and
said room-air inlet‘ is sufficiently closed'so that
outside air is drawn by said second fan through
said outside air inlet and said ‘passage into con
tact with said evaporating unit and is discharged
a condenser and an' evaporator, and means'f'oi'
" 'to' recirculat'e in contact with
for‘ causing outside air to 0001
said’ condenser; for'causing outside air to come
in contact with said evaporator-'and’to flow into
said room, or for causing room air to now to the
outside atmosphere: comprising,‘ inlet and outlet
air openings for admitting‘ air'from or discharg=
a fan for
into‘ the room through said discharge opening. ‘
air to the: ‘outs'ideat'rnosphere,
4. In a room air conditioning unit, a casing 25 'ing
drawing vair ' through said‘ inlet ‘opening into‘ con;
enclosing air conditioning apparatus including a
refrigerant liqueiying unit and a refrigerant
evaporating unit, said casing‘ having an outside
air inlet for admitting air from the outside at
mosphere to said refrigerant liquefying unit, an
air outlet leading from said refrigerant liquefy
ing ‘unit for discharging air to the atmosphere,
tact with said condenser and discharging it
through said outlet, ‘room-‘air inlet and outlet
openings foradmitting‘ air from or discharging
air‘ to said room, 'a tan‘ for'drawing roomair
through said room-air inlet opening‘ into' contact
with said evaporator and for discharging said‘ air
back into said room through said room outlet
opening‘, ‘there being ‘a passage connecting said
to said refrigerant evaporating unit, and a con 22.5 room-air ' inlet‘ with said ?rst-mentioned. outlet,
ditioned air outlet leading from said evaporating
a shutter adapted atileast‘ partially to close ‘said
unit for discharging air back to said room, a fan
?rsthmentioned inlet‘ opening, ‘a, second'shutter
for drawing air‘ through said outside air inlet
adapted selectively‘
close‘ said
into contact with said liquefying unit and dis
room air inlet’ opening or said passage, and
through said out
a room air inlet for admitting air from a room
let, a fan for drawing room air through said room 40 means operatively connected
said shutters into their respective operative po
air inlet into contact with said evaporating unit
and discharging it back into the room through
'I. In a room air conditioning unit, a ‘casing
said conditioned air outlet, a passage connecting
having an outer portion ‘and an inner portion,
said‘ room air inlet with said outside air inlet 45 a compressor and a condenser in said outer‘por
tion, said outer portion having an outside air
and or
outlet,air and room air into and through
said casing comprising, a ?rst damper
trolling said outside air inlet, a second damper
inlet and an voutlet for admitting air from‘ and
discharging air‘ to‘- the outside atmosphere‘, a
blower for'drawing outsid'eiair through said in
for selectively controlling said room air inlet and
let into contact with said condenser ‘and dis
the adjacent end of said passage, and actuating
charging it through‘ ‘said outlet, a U-shaped
means for operating said dampers selectively to
housing ‘disposed transversely of said casing and
close or open said inlets or said passage.
5. In a room air conditioning unit, a casing
having a ?rst portion and'a second portion, a
?rst heat exchanger in said ?rst portion, a sec
ond heat exchanger in said second portion, an
‘outside air inlet for admitting air from the out
side atmosphere to said ?rst portion, an air outlet
leading from said first portion for discharging air
to the atmosphere, a room air inlet for admitting
air from a room the air of which is to be con
ditioned to said second portion, a room air out
having spaced innerand outer walls, with the
outer wall of 'said‘housin'g separating said outer
and inner portions'lof said casing, a cooling ele
ment connected‘ to‘ said‘ condenser and carried
between the inner and' outer walls of said hous
ing, the bottom of said‘ housing being spaced from
the bottom'oi' said vcasing to‘ form a passage con
meeting said inner and outer portions 0! said
casing, there being a room air inlet for admit
ting air from' a room to said inner
let leading from said second portion for dis
casing and a' room airoutlet' leading from said
said ?rst heat exchanger and discharging it to
inner andz‘outer walls of said housing for draw
inner portion“ ‘for discharging air back to‘ said
charging air to said room, a fan for drawing ‘air
room, a second blower also carried between the
through said outside air inlet into contact with »
the outside'atmosphere, a fan for drawing room
air through said room‘ air inlet into contact with
ing room ai'r through said room air inlet into
contact with said ‘evaporator and discharging‘ it
into said room through saidfroorn‘v air outlet, and
said second heat exchanger
back into the room through said room air outlet, 70 dampers ‘for controlling said inlets and said pas
a passage‘connecting said room air inlet with
said outside air inlet and said outlet, and means
for regulating the flow of outside air and room
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