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Патент USA US3075756

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Jan. 29, 1963
A. D. GOETTL
3,075,750
EVAPORATIVE COOLER PAD FRAME CONSTRUCTION
'
\
INVENTOR.
ADAM
Agent
D. GOETTL
Jan. 29, 1963
.
3,075,750
A. D. GOET'II'L
EVAPORATIVE COOLER PAD FRAME CONSTRUCTION
- Filed July 7, 1958
3 Sheets-Sheet 2
INVENTOR.
ADAM
BY
FIG.4.
Agent
D.
GOETTL
Jan. 29, 1963
A. D. GOETTL
3,075,750
EVAPORATIVE COOLER PAD FRAME CONSTRUCTION
Filed Jxily 7, 1958
3 Sheets-Sheet 3 _
F l G. 7.
'I'I‘IIII‘II'IIIA
I I Sl 9 INVENTOR.
ADAM
F166.
D. .GOE TTL
BYW>6QQW
Agent
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from the line 2-2 of FIG. 1 showing parts and portions
3.tl’75,75tl
in elevation to facilitate the illustration:
EVAPQRATEVE CGOLER PAD FRAME
CQNSTRUCTEQN
Adam D. Goettl, l’hoenin, Aria, assi?nor to McGraw
Edison ‘Company, Elgin, iii“, a corpora ion of Delaware
4iierl .lniy 7, 1953, Ser. No. 7¢l7,ll24
4 Claims. (ill. 261—97)
This invention rela'es to an evaporative cooler pad
frame construction and more particularly to an evapora
tive cooler pad frame construction having novel features
for removably supporting an evaporative cooler pad in
spaced relation to air inlet louvers of an evaporative
cooler whereby water which gravitates through the evap
orative cooler pad does not contact the louvers and per
mit them to become encrusted with mineral salts.
In the operation of evaporative coolers Water is ele
vated to the upper portions of evaporative cooler pads
FIG. 3 is a fragmentary, sectional View taken from the
line 3~3 of FIG. 1.
'
H6. 4 is a fragmentary, vertical, sectional view of an
'evaporative cooler showing the modi?ed form of an
evaporative cooler pad frame construction in accordance
with the present invention.
5 is a fragmentary, plan, sectional view taken
from the line 5—5 of FIG. 4.
FIG. 6 is a fragmentary, vertical, sectional View of a
further modi?ed form of an evaporative cooler pad frame
construction in accordance with the present invention
showing parts and portions in elevation to facilitate the
15 illustration.
FIG. 7 is a fragmentary, sectional view taken from the
line 7—7 of FIG. 6.
FIG. 8 is a fragmentary, sectional view taken from the
by a pump or water p essure whereupon the water is 20
line 5-8 of FIG. 6 and
FIG. 9 is a fragmentary, sectional View taken from the
mitted to gravitate downwardly therethrough. A blower
is usually provided to force air through an evaporative
line 9——9 of FIG. 6.
As shown in HQ. 1 of the drawings an evaporative
cooler sump ll) is disposed to receive water which drains
distributed over the upper surface of the pad and per
cooler pad and the air enters the cooler through a
louvered plate in the side wall thereof preliminary to its
passage through the pad. in conventional evaporative
coolers the pad is placed adjacent or contiguous to the
louvered plate and water passing downwardly through
the pad wets the louvers of the plate.
water collect on the louvers of
Minerals in the
from evaporative cooler pads positioned thereabove. The
sump it? supports corner frame elements 12 of an evap~
orative cooler frame. These corner frame elements are
provided with vertical recess tracks 14- which receive
flanged edges 16 of a louver plate 15 at one outer side
of an evaporative cooler. As shown in FIG. 1 of the
plate and form a thick 30 drawing an upper edge 2% of the louver plate 18 is dis
crust which eventually reduces air ?ow efficiency through
the louvers and also causes an undesirable appearance of
the louvers externally of the cooler.
It has been a problem to provide an evaporative cooler
pad frame construction which readily permits the pads
to be removed and yet operated in spaced relation with
a louveredL plate whereby the plate does not become en
crusted with mineral salts from Water passing down
posed inwardly of a top skirt 22, of an evaporative cooler
whereby the upper portions of the ?anges 16 are retained
in the tracks
The lower edge 24% of the louver plate 18 is disposed
inwardly of the sump pan l8 and is provided with a
folded portion terminating in a hook shaped member 26
which is hooked over a normally upper edge 25 of the
sump pan ill. Thus, the louver plate 18 is supported
in the side wall of a conventional evaporative cooler
thereto.
40 frame.
Accordingly, it is an object of the present invention to
The louver plate is provided with open louvers 39
provide a. novel evaporative cooler pad frame construc
through which air may pass inwardly into the interior
wartly through the evaporative cooler pad adjacent
tion wherein an evaporative cooler pad is readily remov
able from an evaporative cooler and wherein the pad is
maintained in spaced relationship with an air inlet louver
plate thereby preventing the plate from becoming en
crusted with mineral salts during operation of the
evaporatire cooler.
of an evaporat’ ‘e cooler toward a foraminous evaporatiye
cooler pad 32. This pad 32 may be made of wood
excelsior or other suitable material and is provided with
an inner layer 312- of fine glass fibers or other suitable
material which will act as a ?lter to catch dust, insects
and other foreign matter thereby preventing it from being
carried in the air stream passing through the pad. The
Another object of the invention is to provide a novel
evaporative cooler pad frame construction wherein a
pad 32 and filter 3-43 are contiguous with each other and
trough and pad retaining screens are arranged in a uni
retained between foraminous pad retainers 36 and 33.
tary assembly with an evaporative cooler pad.
These pad retainers 36 and 38 are Wire mesh screen
Another object of the invention is to provide novel
structures having inwardly projecting members 49 and
means for removably retaining an evaporative cooler pad
42 respectively which extend into the pad and vertically
and trough assembly in the frame of an evaporative 55 support the same between the retainers as and 38. These
cooler.
pad retainers are provided with vertical bars 44 and 46,
Another object of the invention is to prevent louver
respectively, and horizontal bars 48 and 59, respectively.
plates at the outer sides of evaporative coolers from
These bars are spot Welded together and the projecting
becoming encrusted with mineral salts.
members 4% and d2 are welded at the juncture of the
Another object of the invention is to provide an evap 60 vertical and horizontal bars thereby providing rigid
orative cooler pad frame construction which maintains
durable pad supports. The pad retainer 36 is provided
an evaporative cooler pad
unitary assembly with a
with an uppermost horizontal bar 52 which is pivotally
water distributor whereby the entire assembly may be
retained in a hook shaped clip channel portion 54- integral
removed from the frame of an evaporative cooler for
with one side of a Water distributor trough as .above the
maintenance service and pad replacement.
pad 32. The opposite side of the trough 56 is provided
Further objects and advantases of the invention may
with another hool: shaped portion 58 which pivotally
be apparent from the following speci?cation, appended
retains a horizontal bar as at the upper edge of the pad
claims and accompanying drawings in which:
retainer 36.
PEG. 1 is a fragmentary, vertical, sectional view of an
The trough 56 may be molded of plastic or may be
evaporative cooler showing an evaporative cooler pad 70 made of sheet metal if desired. The upper horizontal
frame construction of the present invention installed
bars 52 and 6%} of the pad retainers 36 and 38 are pivot
therein.
ally retained in the hook shaped clip portions 54 and 58
PEG. 2 is a fragmentary, plan, sectional view taken
and due to the resilience of these hook shaped portions
3,075,750
él
2%
pad 32 does not contact the louver vanes 30 due to a
5d and 53 the bars 52 and 643 may be forced thereinto
by lateral de?ection of the hook shaped portions 54 and
spaced relation of the edges and the pad retainer frame
53. Thus, these horizontal bars 52 and 653 are snapped
36 as hereinbelore described.
The excess water passes
into the hook shaped clips 54 and 5S and are hingedly
downwardly through openings 72 and into the sump pan
supported thereby.
Ill from which it is recirculated by a pump or from which
it may be drained oil as desired.
When from time to time it is desired to replace the
pad 32 and ?lter 34 the louver plate 13 is removed as
'
The lower ends of the pad retainer screen 36 and 38
‘are provided with horizontal bars 62 and 64, respectively,
which are engaged .and held by hook shaped portions 66
hereinbefore described and the evaporative cooler pad
and .68, respectively, of a bottom member 70 at the lower
end of the pad 32. This member ‘70 is substantially 10 assembly is also removed from the plates 80 of the
evaporative cooler frame as hereinbefore described. The
channel shaped and provided with openings 72 therein
bottom member 76 of the evaporative cooler pad assembly
to provide for drainage of water downwardly away from
‘is disengaged from the bars 62 and 64 by forcing them
the pad 32. Secured to the bottom member 70 is an
together and removing them from thehooked shaped por
air baffle ‘74 which extends into close proximity to one
tion 66 and 63 of the bottom member 70. This oper
of the louver vanes 39 in order to minimize the passage
ation causes slight compression of the pad 32 and ?lter
of air between the louvers 3t) and the pad 32 at the
3d’ and when the bottom member 70 is thus removed
outer lower portion thereof.
from the bars 62 and 64 the retainer screens 36 and
The upper and lower bars 60 and 64, respectively, of
33 may be hingedly moved apart so that the projecting
the pad retainer screen 38 form trunnions at their ends
‘bars 40 and 4-2; of the retainers 36 and 33 may be dis
which are disposed in slots 76 and 78, respectively, of
engaged t‘rom the pad 32 and ?lter 34 thereby permitting
sheet metal plates 89 which extend inwardly from the
their removal from the retainers 36 and 38.
recessed troughs 1d of the cooler frame corner elements
A vfresh pad and ?lter may be inserted between the
12 as shown best in FIGS. 1 and 2 of the drawing. It
retainers 36 and 38 whereupon they may be pivoted
will be seen that the trunnion ends of the bars 663 and 64
project a short distance through the plates 80 and that 25 toward each other about the axis of their bars 52 and
'69 which are hingedly and pivotally mounted in the hook
these plates are provided with joggled portions 82 which
shaped portions 54 and 53 of the trough 56. When the
are offset a greater distance than the outward extension
retainers 36 and 38 are pivoted toward each other the
of the bars 6t) and 64 so that they may be removed
bars 4i} and 42 thereof are forced to pierce the pad 32
together with the trough S6 and pad 32 from the cooler
between the track portions 14. The plates 80 may be 30 and ?lter 34 and extend thereinto. When the retainer
screens 36 and 38 are forced together at opposite sides
de?ected outwardly from the pad 38 so that the trunnion
of the pad 32 and ?lter 34 the bottom member 7% at
.endsof the bars 69 and '64 may be cleared from the slots
its clip'portions 66 and 68 is engaged with the lower
'76 and 78.
bars 62 and 64 of the retainer screens 36 and 38 and
It will be seen that the louver plate 18 as hereinbefore
described must be raised vertically whereupon the upper 35 compression of the pad 32 and ?lter 34 maintains the
bars 62 and 64 in engagement in the hook shaped clip
vedge 26 of the louver plate passes upwardly behind the
portions 66 and 68 of the bottom member 76'.
skirt 22 while the vertical edges 16 ride upwardly in
in the modi?cation as shown in FIGS. 4 and 5 a
the tracks 14 until the lower edge 24 of the louver plate
pad frame 90 carries a louver plate 92, a trough 94, a pad
clears the upper edge 23 of the sump pan it}. The louver
96 and supporting retainer screens '98 and 168. This
plate 18 may then at its lower edge be moved outwardly
entire assembly carried by the pad frame do is removable
and downwardly until the upper edge 2d thereof clears
*from the cooler frame elements 12 in a similar manner
the skirt 22 whereupon the louver plate 18 may be re
to that of the louver plate 18 hereinbefore described and
moved from the side of the evaporative cooler. This
disclosed in FIGS. 1 to 3, inclusive. Thus, the pad
provides access for the removal of the evaporative cooler
frame structure shown in FIGS. 4 and S of the drawings
pad assembly which includes the trough 56, pad retainer
maintains the louver plate 92 integral with the pad
screens 36 and '38 together with the pad 32 and ?lter 3d.
supporting assembly.
The louver plate 18 is provided with a baflie 84' at
Folded over the upper edge of the louver plate 92 is a
its upper edge which is ?tted adjacent to the hook shaped
plate 102 which is formed to provide the trough 94
clip portion 54 of the trough 56 to prevent leakage of air
between the pad 32 and the louver plate 13.
This baffle .
disposed above the pad 96. Integral with the hook 26
is removed together with the louver plate 18 when it is
is a bottom member 164 which is folded over the lower
disassembled from the cooler frame as hereinbefore
described. The baffle 74 is carried by the bottom mem
‘edge of the louver plate 92 to form a bottom structure
for supporting the pad 96. As shown in FIG. 5 of the
drawings vertical edges of the louver plate 92 are folded
and extend backwardly into side plates 1% of the pad
frame 96. Secured on the inner sides of these side
‘plates Hi6 are angle members 168 which are spaced
backwardly from the edges 110 of louvers 312 similar to
the louvers 3t). hereinbefore described. Engaging the
69 angles 198 is a pad retaining screen 114 disposed in
spaced relation with the edges 11% of the louver vanes
112. inwardly of the retainer 114 is the pad 96 and a
ber 70 of the evaporative cooler pad assembly as herein
- before described.
As shown in PEG. 1 of the drawings the inner edges 86
of the louver vanes 30 are spaced from the foraminous
pad retainer screen 36 thereby preventing any of the
'excelsior or other material of the pad 32 from engaging
these inner edges v86. Thus, water which passes down
wvardly through the pad 32 does not contact the louver
vanes 30 whereby they are maintained in dry, clean con
dition. This spacing of the pad from the louver vanes
contiguous ?lter layer 116.
A retainer screen 118 engages the ?lter layer 116 in
prevents them from getting wet and accumulating deposits
1-of mineral salts which are normally carried in water 65 spaced relationship to the retainer screen 114 and each
‘ used to wet the pad 32.
In operation Water is delivered into the trough 56
by means of a conduit having water therein under pres
sure and the water drains downwardly from the bottom
of the trough through perforations 57 into the pad 32.
Air'is forced through the open louvers 3d and the pad
32 and ?lter 34 as indicated by arrows in FIG. 1 of the
drawings. This causes evaporation of water in the pad
and consequent cooling of the air which passes there
through. The water passing downwardly through the
opposite edge of the retainer screen 118 is held by a
?ange 120 of each side plate 99.
' The retainer screen 118 is held by a conventional clip
bar 122 having hooks 124 on its opposite ends which
70 are engaged in openings 126 in the side plates 99:. The
pad retaining screens lid and 118 are provided with
horizontal .bars 119 and 121 which extend into the pad
96 and ‘?lter 116 and these horizontal bars are secured
'.to' the vertical and horizontal bars, respectively, of the
pad retaining screenslid and 11-3.
3,075,750
5
In operation the evaporative cooler pad frame con
struction as shown in FIGS. 4 and 5 prevents the louver
vanes 112 from becoming encrusted due to the spacing
of the pad 96 therefrom by the screen retainer 114 which
is held in the pad frame 90 by the angle members 108.
When it is desired to replace the pad 96 and ?lter 116
6
overlying a space between said plates; a pair of forami
nous pad supports below said trough and disposed in
spaced relationship with each other; one of said pad sup
ports hinged to said trough; a foraminous pad between
said pad supports and below said water trough, means
holding the lower ends of said pad supports in engagement
the louver plate 92 together with the pad frame 96,
with opposite sides of said pad; and means removably
trough 94, pad 96 and screen frames 98 and 1118 are
supporting said trough, pad supports and pad on and be—
all removed in one unit as hereinbefore described where
tween said pad frame plates.
upon the hooks 124 of the bars 122 are disengaged from 10
2. In an evaporative cooler pad frame construction the
the openings 126 whereupon the retainer screen 118 may
combination of: an evaporative cooler frame having verti
be removed permitting replacement of the pad 96 and
cally disposed spaced pad frame plates; a water trough
?lter 116.
overlying a space between said plates; foraminous pad
In the modi?cation as shown in FIGS. 6 to 9, inclusive,
supports hinged to and depending from said trough and
of the drawings a louver plate 13% is removably sup— 15 disposed in spaced relation to each other; a foraminous pad
ported in the cooler frame in substantially the same
between said pad supports; and below said water trough;
manner as the louver plate 18 disclosed in FIGS. 1 to
means holding the lower ends of said pad supports in
3 of the drawings. The louver plate 130 is provided with
engagement with opposite sides of said pad; and means
louver vanes 132 having inner edges 134 and the upper
removably supporting said pad supports and pad on and
edge of the louver plate is engaged by a folded mem
between said pad frame plates; and a louvered plate sup
ber 136 having an integral extending plate portion 138
ported on said cooler frame outwardly of said pad in
which interconnects side plates 14d integral with folded
edges 142 which correspond with the folded edges 16
spaced relation thereto whereby water which gravitates
from said trough through said pad does not contact said
of the structure shown in FIGS. 1 to 3 of the drawings.
louvered plate.
Connected with the louver plate 130 at its lower edge 25
3. In an evaporative cooler pad frame construction the
is the bottom plate 144 which is folded over the lower
edge of the louver plate 131} and integral with the hook
26. The bottom plate is provided with openings 146
combination of: an evaporative cooler frame having ver
tically disposed spaced pad frame plates; a water trough
overlying a space between said plates; foraminous pad
to permit drainage of water from the evaporative cooler
supports hinged to and depending from said trough and
pad into the sump 16.
30 disposed in spaced relation to each other; a foraminous
Positioned between the side plates 141} is a pad assem
pad between said pad supports and below said water
bly including a pair of spaced plates 14-8, which are con
trough; means holding the lower ends of said pad sup
tiguous with the plates 140 and, on which a trough 15th is
ports in engagement with opposite sides of said pad; and
supported. The trough 151) is carried by ?anges 152 at
means removably supporting said pad supports and pad
the upper portions of the plates 148. These plates 148 35 on and between said pad frame plates; and a louvered
are provided with spaced ?anges 154- and 156 adjacent to
plate supported on said cooler frame outwardly of said
which retainer screens 158 and 160, respectively, are po
pad in spaced relation thereto whereby water which gravi
sitioned. These retainer screens 158 and 169 support an
tates from said trough through said pad does not contact
evaporative pad 162 and a ?lter pad 164 between the
said louvered plate, said foraminous pad,’ supports being
plates 148. These plates 148 are provided with ?xed pins 40 of wire mesh construction and having trunnion portions,
166 which project through slots 168 in the side plates 141}
said frame plates having openings receiving said trun
as shown best in FIGS. 6 and 9 of the drawings. The
nions thereby supporting said pad in said cooler frame.
opposite ends of trough 15th rest in slots 1'76 in the side
4. In an evaporative cooler pad frame construction the
plates 14-13 as shown best in FEGS. 6 and 7 of the draw
combination of: an evaporative cooler frame; a pad frame
ings. The trough 15%‘ is provided with water outlet noz 45 in one side thereof; louvers in the outer side of said pad
zles 172 which permit water to drain downwardly through
frame; and a water distributor and pad assembly remov
the pad 162. Hook bars 174 interconnect the ?anges
ably mounted in said pad frame and spaced from said
156 and these hook bars 174 are similar to the bars 122
louvers, said assemlby comprising a pair of plates, spaced
hereinbefore described in connection with FIGS. 4 and 5
screens held therebetween; a foraminous pad between said
50 screens and a water distributor supported on said plates
of the drawings.
In operation the louver plate 36} when removed from
and disposed above said foraminous pad, said pad frame
the cooler frame carries with it the side plates 14% in which
having openings therein; and trunnions ?xed to said plates
are secured the plates 148, trough 151i, pad 162, ?lter 164
and disposed in said openings, said pad frame being of
and the pad retaining screens 158 and 161}. When re
resilient material whereby it may be deflected beyond the
moved from the evaporative cooler frame the plates 14% 55 ends of said trunnions.
may be removed from the plates 146 by spreading the
References Cited in the file of this patent
plates 141) apart to permit the ends of the pins 166 to clear
the slots 168. The trough 156 at its opposite ends may
UNITED STATES PATENTS
then be removed from the slots 17% in the plates 140.
The pads 160 and ?lter 1411 may be then replaced as 60
hereinbefore described in connection with the replace
ment of the pads shown in FIGS. 4 and 5 of the drawing.
It will be obvious to those skilled in the art that various
modi?cations of the present invention may be resorted to
in any manner limited only by a just interpretation of the
following claims.
I claim:
1. In an evaporative cooler pad frame construction the
combination of: an evaporative cooler frame having verti
cally disposed spaced pad frame plates; a water trough 70
2,021,437
2,137,905
2,233,976
2,237,497
2,327,242
Walsh _______________ __ Nov. 19,
Church et a1 __________ __ Nov. 22,
Essick _______________ __ Mar. 4,
Munford ______________ __ Apr. 8,
Balcom _____________ __ Aug. 17,
2,387,473
2,404,479
Spitzka ______________ __ Oct. 23,
Essick _______________ __ July 23,
2,608,396
2,637,540
2,838,130
2,850,269
2,856,166
Shapiro _____________ __ Aug. 26,
Rowe ________________ __ May 5,
Lemmon _____________ __ June 10,
Bohanon _____________ __ Sept. 2,
Goettl ________________ __ Oct. 14,
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