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Патент USA US2112277

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March 29, 1938.
-
H. D, EUWER
2,112,277
AIR CONDITIONING UNIT
Filed May 4, 1955
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March 29, 1938.
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AIR CONDITIONING UNIT
Filed May 4, 1955
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Patented Mar. 29, 1938
UNITED STATE
2,112,277
AIR CONDITIONING UNll'll‘
Herbert D. Euwcr, St. Louis, Mo., assignor to
` American Car and Foundry Company, New
York, N. Y., a corporation of New .Hersey
Application May 4, 1935, Serial No. 319,811
5 Claims. (Cl. 98-39)
CY
This invention relates to improvements in air
conditioning equipment in general and in par
ticular to air conditioning equipment intended
These ~and. other objects will be obvious »to one
skilled in the art from a study of the following
description when taken in conjunction with the
for application to railway cars or any application
accompanying drawings in which
where space is limited.
Fig. 1 is a section taken substantially at the C1
center of the improved unit and plenum charn
’
It has been found advisable in air conditioning
` work to draw rather than force the air over the
ber;
cooling or heating coils in order to avoid as much
as possible noise caused by the turbulence ci the
10 air as well as to decrease the power consumption.
Fig. 2 is a plan View of the improved unit with
parts broken away to more clearly show the in
This necessitates the placement of the blower
motor and blower between the conditioning coils
and the point of air discharge to the space to be
cooled andi in railway .work especially this is ex
tremely hard to accomplish due to the lack of
Fig. 3 shows on the right a front elevation of
the plenum chamber and on the left a section
~taken through the unit on line 3--3 of Fig. l;
Fig. 4 is an elevational view of the hinged mem
available space which is necessary for frequent
vention;
`
10
15
ber shown in Fig. 5;
Fig. 5 is a. sectional view similar to Fig. 1 show
inspection, cleaning and possible repair of the 'ing the blower assembly swung down for inspec
unit. Also in railway Work it becomes necessary
to provide space to permit ready installation of
20 the unit in the limited car space available.
Previous constructions have been made with
the blower forcing air through the conditioning
coils but such installations were noisy as men
tioned above and it was almost impossible to
25 clean the conditioning coils without partially dis
mantling the unit. Other constructions have
-been made wherein the blower pulled air through
the conditioning coils but in order to make the
blower motor accessible for inspection it was
30 mounted exterior of the unit and drove the blow
ers by means of a long shaft; in such a construc
tion proper cleaning of the coils wasA almost im
possible.
'
It is an object of this invention to provide an
35 air conditioning unit wherein the blower and
tion, and
'
'
Fig. 6 is a sectional view similar to Fig. _1 show
in the blower assembly removed to provide space 20
for workmen.
Referring now to the drawings in which like
references apply to like parts throughout the
various views; the air conditioning unit A com
prises a casing providing space for the blower
assembly B; eliminator E, heat coils H and cool
ing coils C. The plenum chamber or air con
ducting member P connects the unit with the dis
. charge or duct system of thespace to be cooled.
The unit casing is formed by top wall 2, bottom 33
plate 4 having an opening therein with the metal
adjacent the opening ilanged downwardly as ~at
6, side walls-8 and end wall i0, the lower edge of
which is inclined similar to the bottom plate.
A reenforcing member or members I2 surround
and reenforce the openinginv the bottom plate
blower motor may be placed within the unit cas
ing adjacent the point of discharge and so ar
ranged as to be readily removable from the unit
in order that the space previously occupied may
40 be available to a workman for installation, in
spection, cleaning or repair of the unit.
A further object of this invention is the pro
vision of a motor and blower assembly which may
be swung down as a unit for inspection and main
y
45 tenance.
Another object of this invention is the provision
of a motor and blower assembly which is 'readily
removable from the air conditioning unit and
which assembly has no direct metallic contact
50 with the remainder of the unit.
A still further objectof this invention is the
provision of a plenum chamber which may be
attached to the air conditioning unit by a Work
man Working through the space provided for a
provided with complemental hinge butts I4, sup
55 removable blower and motor assembly.
porting arms 28 and when necessary a drain con
and provide a downwardly and inwardly inclined
portion for engagement with the blower assembly.
The front plate is provided with a suitable open
ing for Athe connection of the plenum chamber
or any other air discharge means and with hinge
butts I4 adapted to support the blower assembly.
The blower assembly comprises a pan-shaped
plate I6 provided with continuous upwardly and
outwardly directed flanges I8 carrying rubber,
cork or other vibration dampening and sealing
means 20 adapted to bear on the flanges of mem
ber I2. The inside of the plate I6 is provided
with means to mount the motor M fed by flex
ible cable 2| and blower or blowers 22 aswell as 50
brackets 24 for the attachment of spring 26, the
other end of which is attached to bracket 21 car
ried by the end wall.l The bottom of the plate is
55
2,112,277
2
nection 30 adapted to receive flexible tubing 3|.
Bolts or other hinge pintles 32, preferably rubber
art without departing from the scope of the ap-`
pended claims.
~
What is claimed is:
covered, are provided to swingingly and remov
1. An air conditioning unit having a casing
ably interconnect the hinge butts, while support- .
ing bolts 34 coact with arms 28 and bracket or with at least one flanged opening therein, air
' other means 36 carried by the unit casing. Such conditioning means in the casing, a bloweras
a connection between the plate and casing may sembly comprising a ñanged plate member mov
be properly termed movable since it permits not ably connected to the casing with a motor driven
only a rotational motion but also the removal of blower mounted thereon having a discharge
the plate. The blower discharge outlet is adapted to cooperate with a. second opening in 10
10
strengthened by band 38 having a ñange 40 pro
viding a shoulder adapted to cooperate with a
vibration deadening and sealing gasket 42
cemented or otherwise attached to the end wall
15
adjacent the discharge opening.
The plenum chamber or air conducting mem
ber P as shown is of irregular contour with the
upper wall 44 curved in accordance with the car
roof, as shown in Fig. 3, the lower wall 46 curved
20 in accordance with the interior of the car and
with the sides 48 converging to thus form an out
'let corresponding to the central duct or dis
charge. The end of the plenum chamber yadja
cent the conditioning unit is provided with in
turned ñanges 50 whereby bolts or other secur
ing means 52 may be applied in order to fasten
the plenum chamber to the end wall. It is to be _
noted that this attachment may be readily ac
complished by a workman reaching in through
30 the space intended for the blower assembly.v
The contour -of the plenum chamber is imma
terial and- may be changed to suit the installa;
tion for which it is'intended.
The unit is shown as applied to the car ad
jacent the roof, betweenthe bulkhead 54 and
above the vestibule ceiling 56, but such a place
ment is purely representative as the unit lends
itself readily to other positions where space is
limited, whether this be in a railway car or some
40
stationary structure.
~ '
It is readily seen that the entire box-like unit
A may be assembled complete and easily applied
to the car or other structure by removing the
pintles 32, unplugging the cable 2l, slipping oiî
45 the tube 3i; and removing the blower assembly,
thus providing sp'ace for the workman to attach
the preformed and positioned plenum chamber or
air conducting member P.
It is also seen that
when the blower assembly is in the operative
50 position shown in Fig. 1 there is no metallic con
_tact between the assembly and the unit due to
the dampening members 20 and 42.
Assuming the parts in the position shown in
Fig. 1, it is only necessary to loosen the bolts
34 and allow the entire assembly to swing down
under control of springs 26 in order that a work
man may service the motor and blowers or use an
air hose or other means to clean the -conditioning
coils. In case the Workman needs to make re
60 pairs which .require more working space it is
only necessary to remove the assembly as ex
plained in the above paragraph.
Y
While one type of construction has been shown
and explained it is obvious that other construc
tions, arrangement oi parts and methods of op
eration may be employed by one skilled in the
the casing, sealing -and sound-deadening means
interposed between said ñanges and between said
discharge and second opening whereby the as
sembly is insulated from the casing.
2. An air conditioning unit having a casing 15
with at least one flanged opening therein, air
conditioning means in the casing, a blower as
sembly comprising a ñanged plate member mov
ably connected to the casing with a motor driven
blower mounted thereon having a discharge 20
adapted to cooperate with a second opening in
the casing, sealing and sound-deadening means
interposed between said ñanges and between said
discharge and second opening whereby the as
sembly is insulated from the casing, said movable 25
connection permitting movement of- the assem
bly as a unit whereby a workman may perform
necessary operations on the unit.
3. An air conditioning unit having a casing
with at least one ilanged opening therein, air 30
conditioning means in the casing, a blower as
sembly comprising a ilanged plate member mov
ably connected to the casing with a motor driven
blower mounted thereon having a discharge
adapted to cooperate with a second opening in 35
the casing, sealing andsound-deadening means
interposed between said iianges and between said
discharge and second opening whereby the as
sembly is insulated from the casing, and springs
interposed between the plate and casing to re
strain movement of the plate.
4. An air conditioning unit having a casing,
air conditioning means> in the casing, a blower
assembly comprising a plate member movably
connected to the casing with a motor driven 45
blower mounted thereon having a discharge out
let adapted to cooperate with an opening in the
casing; an air conducting member having in
turned flanges positioned adjacent the opening '
and' adapted to be fastened to the casing, said
assembly being movable whereby a workman
may attach the conducting member to the cas
ing from the interior.
5. An air conditioning unit comprising a casing
having an air discharge opening in a wall there
of, air conditioning means in said casing, a motor
driven blower arranged within said casing with
its discharge outlet detachably engaged with the
before mentioned wall adjacent the air discharge
opening, and means forming at least a part of
another wall of said casing to which the blower
is connected, said means being shiftable to re
move said blower from its engagement with the
first named wall to permit access to the interior
of the casing.
i
»
HERBERT D. EUWER.
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