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Патент USA US2107496

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Feb. 8, 1938.
R, R PABQDIE ‘
2,107,496
LOUVER CONSTRUCTION FOR COOLING TOWERS
\F‘iled Nov. 16, 1,955
I
2 Sheets-Sheet.‘ 1 '
1o
vINVENTOR
29
v
Robe/‘ff
Paton/fa
BY
Feb. 8, 1938.
R, R PABODIE ’
2,107,496
LOUVER CONSTRUCTION FOR COOLING TOWERS
Filed Nov. 16, 1936
2.5‘
25
2 Sheets-Sheet 2
26
‘at?’ 3
/
R736
Patented Feb. 8, 1938
2,107,496
UNITED STATES PATENT
2,107,496
LOUVER CONSTRUCTION FOR COOLING
TOWERS
Robert R. Pabodie, Kansas City, Mo., assignor
to J. F. Pritchard & Company, Kansas City,
Mo., a corporation of Missouri
Application November 16, 1936, Serial No. 111,631
10 Claims. (Cl. 261—109)
This invention relates to cooling towers and
it’ including slats M arranged in spaced relation
particularly to a louver arrangement therefor for and ?xed to transverse cleats l5 extending across
preventing loss of liquid being cooled in the tower. and supported by the longitudinal beams £2. The
The principal objects of the present invention structure thus described is stabilized by suitable
5 are to provide a louver arrangement which is
e?icient in catching moisture driven by air cur
rents transversely through the tower without
materially obstructing flow of the air; to pro
vide a louver arrangement cooperative with sides
of the tower to form fines for further reducing
loss of moisture because of wind currents; to
provide a simple and relatively inexpensive louver
construction capable of ready assembly and at
tachment to a cooling tower; and to provide a
louver construction having a greater total area
of passageways for the air currents thereby per
mitting maximum air ?ow through the tower.
In accomplishing these and other objects of
the invention, as hereinafter pointed out, I have
20 provided improved details of structure, the pre
ferred forms of which are illustrated in the ac
companying drawings, wherein:
Fig. 1 is a plan view of the end portions of
a tower provided with louver sections embodying
the feature of the present invention.
Fig. 2 is a fragmentary perspective view
through a portion of the louvers taken at one of
the catch pans.
Fig. 3 is a vertical section through the cooling
30 tower on the line 3—3 of Fig. 1.
Fig. 4 is an enlarged horizontal section through
a portion of the louvers and adjacent side of the
tower, particularly illustrating the arrangement
of louver bars.
35
Fig. 5 is a section through one of the pans par~
ticularly illustrating mounting of the louver bars.
Referring more in detail to the drawings:
! designates a cooling tower including a foun
dation 2 consisting of a substantially rectangular
40 slab 3 supported on the ground and having an
annular. wall or curbing d to form a catch basin
5. Formed in the center of the slab is a sump 6
for collecting liquid draining from the tower l.
The sump ii includes a wall 8 conforming in
45 shape to the tower l and which connects the slab
3 with the floor 8. The wall 8 provides a support
for the legs or posts N3 of the tower which are
arranged in pairs and connected at spaced points
by transverse beams H extending in superim
50 posed spaced relation across the sump 6. The
posts H! are also connected longitudinally of the
tower by beams I2 having their ends supported
on the transverse beams at points adjacent the
posts, as shown in Fig. 3. .
-55
Supported on the longitudinal beams are decks
transverse cross bracing I‘! as in conventional '5
tower construction. The posts extend above the
upper deck and the respective pairs are connected
by transverse beams l8 having their ends l9 and
20 projecting beyond the posts and overhanging
the slab 3.
Carried by the beams I8 is a distributing system
including a conduit 23 extending longitudinally
of the tower and having depending nozzles 24
directed toward the upper deck. The conduit is
also provided with lateral branches 25 having L ‘15
?ttings 26 carrying similar nozzles 2',’ whereby the
liquid to be cooled is distributed over the surface
of the upper deck. The liquid, upon reaching the
upper deck, spreads over the surface of the deck
slats and drips through the spaces therebetween 20
to the slats of the next lower deck and so on
down the tower until the water is ?nally collected
in the sump 6, the water being gradually cooled
by air currents blowing horizontally between the
decks and across the path of the descending 25
droplets of liquid.
The tower thus described is of conventional
design and speci?cally forms no part of the pres
ent invention which may be carried out with
other arrangements of splash decks than the type
illustrated.
In cooling towers of this type, air currents blow
ing through the spaces between the decks pick up
the droplets of liquid and carry them through the
opposite side of the tower so that they do not
reach the sump, and it is the purpose of the
present invention to provide a tower with louvers
arranged to allow free passage of air currents
necessary in cooling the liquid but which form
traps for separating any moisture picked up by
the air currents and to effect its return. to the
tower to continue its descent toward the sump 6.
Located in spaced parallel alignment with each
of the tower posts and having their lower ends
supported on the slab 3 are louver supporting
posts 28 and which have their upper ends con
nected with projecting ends l9 and 26 of the
transverse beams l8.
Extending horizontally of the tower legs at
spaced points along the height thereof are hori~
zontal beams 29 for supporting the inner edges
30 of catch pans 3! extending upwardly and out
30
35
40
45
50
wardly at suitable angles to drain liquid caught
thereby in the direction of the tower, as later
described. The outer edges of the pans are shaped 55
2
10
15
20
25
2,107,496
across to opposite sides of the tower in the direc
to provide a series of triangular projections 32
extending outwardly over the slab 3 with their tion of the louvers 42, however, the air currents
vertexes 33 terminating substantially over the upon engaging the louver bars, change their di
rection before they can pass through'the spaces
inner face of the curbings ll. Theprojecting por
tions of the pans are supported at the vertexes 45 therebetween. Thev air, upon contacting the
thereof by vertical posts 34 located adjacent the louvers 52, gives up the drops of moisture which
curbings 4. Fixed to the upper and lower edges collect on the inner faces of the ba?les and gravi
of the projections are plates 35 and 3% connected tates 'theredown onto the next catch pan, the
by rails 3? having their upper edges projecting battens 45 and lil forming stops to prevent blow~
above and below the respective plates as clearly ing off of any‘of the collected moisture from the ,
illustrated in Fig. 5. The plates 35 and. 36 thus louvers.
Upon reaching the catch pans 3|, the moisture
extend in angular relation to the longitudinal
direction of the tower and have parallel grooves drains thereacross over the inner edges 30 onto
38 and 39 extending from the inner side edges [iii the next lower deck of the cooling tower so that
thereof toward the outer edges t! that engagingly the water tending to escape is returned to con
tinue its gravitational ?ow from deck to deck of
retain the ends of vertical louver bars A32.
The louver bars comprise ?at strips of suflicient the tower. Any of the moisture stopped by the
length to extend from the upper plates of one lowermost section of louvers is caught by the
pan to the lower plates of the next upper pan slab 3 which slopes in the direction of the sump
6 to return the water thereto.
and are of sufficient width so that the inner
By providing the VV-arrangement and stag~
edges 43 overlap the outer edges 44 of the adja
cent bar whereby direct passage of air currents gered relation of. louver bars, I am able'to pro
is prevented in transverse directions relatively to vide for a maximum total passage having great,
the tower‘. The spacing between the respective er capacity than the cross-sectional area of the
bars form passageways 45, the total areas of spaces between the respective decks, so that while i
which are substantially equal to or greater than the'ba?'les provide an effective retard foriany
the sectional area between the respective decks moisture'contained in the air currents, they do
so as to provide maximum movement of air
across the tower and through the ba?ie.
Extending longitudinally of the inner and outer
30
faces at the outer edges of the louver bars are
battens 46 and 41. The outer battens H are pref
erably of larger dimension than the inner bat
tens, as shown in Fig. 4. The battens not only
35 reinforce and stiffen the louverbars but provide
stops for catching and retaining any drops of
moisture that may be carried in the air mov
ing therebetween.
The moisture, upon being
stopped by the baffles, gravitates theredown until
40 the next lower pan is reached, whereupon the
moisture runs off the upper plates of the pans
and across the pans toward the decks of the
tower.
In order to close the space between the outer
45 louver bars at the vertex portion of the pans,
the posts 34 carry louver plates 48 ?xed to their
outer faces and having their side edges extend
ing beyond the inner edges of the adjacent louver
bars, the edges of the plates 48 being provided
with battens 49 and 50 corresponding to the bat
tens previously described in connection with the
louver bars.
.
The louver plates carrying the louver bars
are preferably connected at their ends by cleats
5| nailed or otherwise attached to the under
sides thereof, as shown in Fig. 3,‘ and by the
dotted lines in Fig. 4. The juncture of the
louvers at the corners of the tower are closed by
not act to retard or choke the volume of air cur
rents that may be moved between the decks. '
Attention is also directed to‘ the V-shaped ar
rangement of the ba?les which form flues where
by the air currents are caused to move upwardly
thereby further reducing their velocity and caus
ing gravitational separation of entrained rnois
ture.
;
03 Cl
a
From the foregoing, it is obvious that I' have
provided a louver arrangement'which is most
effective in separating moisture but which does
not materially retard or interfere with movement
of air currents across the cooling tower. Due to .40
the slotted arrangement of the plates carried by
their respective‘ catch pans, the louvers are read
ily assembled and rigidly retained in position
so that they are not likely to be broken down
in case of excessive wind velocities.
:45
What I claim and desire to secure by Letters
Patent
is:
7
7
~
1. In combination with a cooling tower, a plu
rality of superimposed catch pans having tri
angular shaped projections, means supporting
the catch pans at the sides of the tower, louver
bars supported along the marginal edges of the
triangular shaped projections and arranged in
spaced parallel relation, and battens ?xed to the
inner and outer edges of the bars.
2. In combination with a cooling tower, a plu-_
rality of superimposed catch pans having angu
larly extending outer edges, plates ?xed to the
?at plates 52 as shown in Fig. 1.
upper and lower surfaces of the pans at said
The operation of a tower constructed and as
sembled as described is as follows:
angular edges and provided with parallel spaced 60
A liquid to be cooled, such as water, is deliv
ered to the rows of nozzles 24 and 2'! through the
pipe 23 for substantially uniform distribution
65 over the slats of the upper deck. The drops of
water upon reaching the slats spread thereover
and drip from the sides thereof through the
spaces onto the slats of the next lower deck and
grooves, and louver bars having their upper and
lower ends supported in the grooves of said
plates and having the inner side edge of one
louver bar overlapping the opposite side edge of
the next adjacent louver bar.
‘
so on until the water reaches the sump 6. During
.larly extending outer edges, plates ?xed to the
70 travel of the droplets of water from one deck to
upper and lower surfaces of 7 the pans at said
the next, air currents moving transversely be
tween the decks cool the water incidental to ac
tual contact therewith and by evaporation. At
times the air currents are at such velocity that
75 they pick up drops of water and carry them
; 65
3. In combination with a cooling tower, a plu
rality of superimposed catch pans having angu- '
angular edges and provided with parallel spaced 770
grooves, louver bars having their upper and lower
endssupported in the grooves of said plates and
having the inner side edge of one bar overlapping
the opposite side edge of the next adjacent bar, _.-75
2,107,496
3
and water stops secured to the inner and outer_ overlapping the opposite side edge of the next
adjacent louver bar.
surfaces of the louver bars.
‘
4. In combination with a cooling tower, a plu
8. In combination with a cooling tower, a plu
larly extending outer edges, plates ?xed to the
rality of superimposed catch pans having angu
larly extending outer edges, plates ?xed to the
upper and lower surfaces of the pans at said
upper and lower surfaces of the pans at said
’ , rality of superimposed catch pans having angu
angular edges and provided with parallel spaced
angular edges and provided with parallel spaced
grooves, louver bars having their upper and lower
ends supported in the grooves of said plates and
grooves, louver bars having upper and lower ends
supported in the grooves of said plates and hav
ing the inner side edge of one bar overlapping the 10
opposite side edge of the next adjacent bar, and
guards ?xed to the outer edges of the pans in
overlapping relation with the plates.
9. In combination with a cooling tower, a plu
rality of superimposed catch pans having angu 15
'10 having the inner side edge of one louver bar over
lapping the opposite side edge of the next adja
cent louver bar, and batten strips ?xed to the
inner and outer faces at the outer edges of the
respective louver bars.
5. In combination with a ‘cooling tower, a plu
rality of superimposed catch pans having tri
' angular shaped projections, means supporting
the catch pans at the sides of the tower, and
louver bars supported along the marginal edges
of the triangular shaped projections and ar
ranged in spaced parallel relation with the sides
of the cooling tower.
6. In combination with a cooling tower, a plu
rality of superimposed catch pans having tri
‘ angular shaped projections, means supporting
the catch pans at the sides of the tower, louver
bars supported along the marginal edges of the
triangular shaped projections and arranged in
spaced parallel relation with the sides of the cool
ing tower, and battens ?xed to the outer edges
of the bars.
7. In combination with a cooling tower, a plu
rality of superimposed catch pans arranged to
slope, in the direction of the cooling tower and
having angularly extending outer edges, plates
?xed to the upper and lower surfaces of the pans
at said angular edges, and louver bars having
their upper and lower ends ?xed to said plates
and having the inner side edge of one louver bar
larly extending outer edges, posts spacing the
pans at the juncture of said outer edges of the
pan, plates ?xed to the upper and lower surfaces
of the pans at said angular edges and provided
with parallel spaced grooves, louver bars sup
ported in parallel relation with the posts and
having their upper and lower ends supported in
the grooves of said plates and having the inner
side edge of one bar overlapping the opposite
side edge of the next adjacent bar, batten strips 25
?xed to the inner and outer faces at the outer
edges of the respective bars, and plates secured
to the posts and having projecting outer edges
cooperating with the louver bars to divert air cur
30
rents blowing through the tower.
10. In combination with a cooling tower, a plu
rality of superimposed catch pans in the form of
a series of triangular shaped projections extend
ing from the sides of the tower, and louver bars
supported'between the catch pans and arranged
at the outer edges thereof to form substantially
triangular shaped ?ues- between the pans.
ROBERT R. PABODIE.
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