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Патент USA US3035516

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May 22, 1962
Filed Aug. 5, 1959
2 Sheets-Sheet 1
FIG. 3
May 22, 1962
Filed Aug. 3, 1959
2 Sheets-Sheet 2
zevl _-_- ___
FIG. '7
W. mmR.
United States Patent G?ice
Patented May 22, 1952
as at 2; there being in such latter case a ?ared portion
or skirt 3 at the lower end of draft tube 1 for extending
outwardly of chimney 2 and being engaged to a tubular
Henri Schrijver, 812 E. Gate Ave., St. Louis, Mo.
Filed Aug. 3, 1959, Ser. No. 831,105
1 Claim. (Cl. 98-—70)
support member 4 havin0 an out-turned base ?ange 4'
for securement upon enclosure B. In its upper portion
draft tube 1 is surrounded by a concentric sleeve 5 which
mounts at its upper end a horizontally presented wind
tube 6, whereby the same combine to form a T-construc
This invention relates in general to ventilation, and,
more particularly, to a ventilator adapted for operation
in response to air currents.
tion, with said wind tube 6 extending laterally across
It is an object of the present invention to provide a 10 said sleeve 5 and being in communication with draft tube
ventilator adapted for the withdrawal of air or other
1 through an opening 7 provided in the lower wall of said
gaseous matter from enclosed spaces, which is highly
wind tube 6.
e?icient in operation; which is of simple and low-cost
Internally of draft tube 1, near its lower end, is dis
construction; and which does not require electric power,
posed a support bracket 8 centrally of which is engaged
being operated by air currents, and is, hence, most eco 15 the lower end of a vertically extending pivot rod 9; the
nomical in use.
a ventilator which is uniquely constructed so as to be
upper extremity of said rod 9 carries a rounded ?nial
or nut 10 supportingly abutting the inner top wall of
wind tube 6 and forming a pivot point for the same.
productive of a markedly greater suction than has been
Wind tube 6, together with sleeve 5, is thus adapted to
It is another object of the present invention to provide
heretofore attained by prior art structures so as to render 20 swing about support point 10 within a horizontal plane;
same widely usable with present day construction.
It is a further object of the present invention to pro
vide a ventilator which may be readily and cheaply
there being a plurality of bearing members 11 mounted
on the exterior face of draft tube 1 for engaging the
confronting portions of the inner Wall of sleeve 5 in a
adapted for e?icient cooling of, and air withdrawal from,
substantially frictionless manner to conduce to the rota
all types of enclosed spaces, whether in buildings, ve 25 tive movement of the latter about said tube 1.
hicles, or industrial equipment.
Wind tube 6 at its normally windward end incorporates
It is an additional object of the present invention to
a diverging mouth-forming portion 12 for inducing wind
provide a ventilator which is reliable and durable in
current reception. Mounted on the upper, outer wall of
usage, not requiring maintenance or servicing, nor being
said wind tube 6 is a vane or rudder 13 for impingement
disposed toward breakdown; and which may be easily and
thereon of wind currents, whereby said wind tube 6 will
economically installed on existing structures.
be continuously aligned with such currents, so that mouth
Other objects and details of the invention will be ap
12 will be directed up-wind.
parent from the following description, when read in
connection with the accompanying drawings (two sheets)
Disposed within wind tube 6, in concentricity there
with, is a converging nozzle 14, the intake or larger end
35 of which is presented at the windward end of tube 6,
FIGURE 1 is a side view of a ventilator constructed
being of substantially like cross-section to till the same,
in accordance with and embodying the present invention,
with its discharge or narrower end being of relatively
illustrating the same in installed position upon the roof
smaller cross-section than said wind tube 6 and said
of an enclosed structure.
nozzle 14 being of such length as to position said dis
FIGURE 2 is a vertical cross-sectional View of the 40 charge end spacedly beyond, or leeward of, the intersec
ventilator illustrated in FIGURE 1.
tion of wind tube 6 and draft tube 1. With reference to
FIGURE 3 is a horizontal transverse section taken on
FIGURE 2, it will be noted that rod 9 passes through a
the line 3—3 of FIGURE 2.
bushing 15 extending vertically across nozzle 14 and
FIGURE 4 is a vertical transverse section taken on
the line 4-4 of FIGURE 2.
FIGURE 5 is a horizontal transverse section taken
on the line 5-—5 of FIGURE 2.
being secured thereto, as by welding.
Provided within draft tube 1, upwardly of bracket 8, is
a vertically disposed converging nozzle 16, the upper or
discharge end of which is aligned with the upper end of
draft tube 1 so that ?uid moving therethrough will dis
FIGURE 6 is a top plan view of another form of
ventilator constructed in accordance with and embodying
charge directly into wind tube 6; it being particularly
the present invention, illustrating same as installed upon 50 noted that the discharge end of nozzle 16 is located wind
a cooling tower.
ward of the discharge end of nozzle 14. The lower or
FIGURE 7 is a side view of the ventilator illustrated in
intake end of vertical nozzle 16 is of substantially the
same cross-section as draft tube 1 and being of a length
FIGURE 8 is an end view of the ventilator illustrated
‘approximating, but not necessarily coinciding with, that
in FIGURE 7.
55 of horizontal nozzle 14.
FIGURE 9 is a top plan view of a further form of
By the free rotatability of sleeve 5, wind tube 6 through
ventilator constructed in accordance with and embodying
operation of vane 13 will, at all times, be brought into
the present invention, illustrating the same as installed
alignment with the prevailing moving air current, which
upon the roof of an enclosed vehicle.
will thus enter said tube 6, through mouth 12, and pass
FIGURE 10 is a side view of the ventilator illustrated 60 into nozzle 14, whereby due to the constricting nature
of the walls thereof, the pressure of such current will be
FIGURE 11 is an end view of the ventilator illustrated
converted into increased velocity of the air, the speci?c
in FIGURE 9.
Referring to the drawings which illustrate practical
embodiments of the present invention and, more par
ticularly, referring to FIGURES l to 5 thereof, A gen
volume of which also increases. Upon discharge of the
compressed air from nozzle 14 an area of relatively re
duced pressure, lower than the pressure of the air within
enclosure B, will be created adjacent, slightly leeward of,
erally designates a ventilator adapted for disposition upon
the discharge end of said nozzle 14 so that a suction is thus
the roof or overhead wall of an enclosed space desig
nated B, such as a building, comprising a vertically pre
developed which serves to draw ?uid upwardly through
draft tube 1. Enclosed space B will be ventilated by such
sented draft tube 1 which communicates with the interior 70 action, with warm air being withdrawn for cooling of the
space, ‘as Well as any foul air or gas being e?iciently eject
‘of enclosed space B, either directly by a port provided in
1the overhead wall or through a chimney, stack or ?ue,
ed from the enclosure. However, such upwardly drawn
air or gas will pass through vertical nozzle 16 which lat
ter will cause the velocity of such upwardly moving ?uid
to be increased so that upon discharge of the same, into
wind tube 6, a zone of relatively lowered pressure will
there be created in proximity to the area of reduced pres
sure developed adjacent the discharge end of nozzle 14,
for reinforcing the latter and consequently serving to
provide an enhanced suction upon the ?uid in draft tube i,
and thus causing a greater updraft for e?ecting emission of
to the incoming hot water so as to bring about a'highly
ei?cient heat exchange, resulting in cooling of the incom
ing water.
The air forced through nozzle 24 will mix with that
discharged from nozzle 25, and such mixture is directed
against a ba?ie or condensing plate 29, located outwardly
of the discharge end of duct 20, and being at ambient
temperature for causing condensation of a large percent
age of the water vapor in the air mixture striking same,
air or gas from enclosed space E.
10 and with the condensate being guided downwardly along
a downwardly extending channelized portion of said plate
In view of the foregoing, it will be seen that the present
29 for return to the base portion of tower C, as at 31'},
invention contemplates the coaction of a horizontal nozzle
and with the air or gas phase of said mixture being up
and a vertically presented nozzle, with the former in over
wardly directed for return to the atmosphere,
lying relationship to the latter, and ‘with its discharge end
located beyond, and leeward of, the discharge end of the 15 Referring to FIGURES 9, l0 and 11, a further form
of the present invention is disclosed wherein D indicates
latter, so that mutually reinforcing areas of relatively de
creased pressure will be brought about to cause a marked
ly strong suction for withdrawal of air or gas from an en
a ventilator adapted for cooling of the interior of an
enclosed vehicle designated E. The said vent D incorpo
rates a duct-like housing 3% mounted upon the roof of the
closed space communicating with the vertical nozzle.
It is to be especially noted that ventilator A may be 20 vehicle E and presented with its axis longitudinally
thereof. Provided in said housing 30 is a converging
economically produced, as from suitable sheet metal which
nozzle 31, the forward, enlarged intake end of which is
has been preferably pre-treated for moisture-resistance.
of substantially the same cross section as the forward end
The operation of the elements of said ventilator produce
of duct 3%) and completely ?lls the forward end thereof
but minimal wear so that the same is highly durable and
reliable in usage. The present invention is most simple 25 with the reduced, dicharge end thereof being spaced from
the rearward end of said duct 34}. Suitably secured within
in construction, yet highly e??cient in operation and may
an opening in the top wall of vehicle E for extension into
be readily utilized for enclosed spaces at little cost either
the said duct 30 beneath nozzle 31 is a converging nozzle
in installation or in operation.
32 having its axis substantially perpendicular to the axis
Ventilators of the present invention are adapted for
of nozzle 31 and with its upper, reduced discharge end
use with any suitable enclosed space and, as a further
being located spacedly beneath said nozzle 31 ‘and for
exempli?cation of such, the same may be easily modi?ed
wardly of the discharge end of the latter. The lower,
for industrial purposes, as for a cooling tower ventilator,
intake end of nozzle 32 communicates directly with the
indicated generally at C in FIGURES 6, 7 and 8 to which
attention is now directed.
In this construction there is
vehicle interior as indicated at 33 in FIGURE 10.
provided a horizontally disposed duct 24}, which may be 35
Thus, it will be seen that in travel of vehicle E air will
be caused to move relatively through nozzle 31 to create
a suction at the discharge end thereof which will create
a plurality of short-spaced-apart vertical ducts 21, desir
an updraft for withdrawal of air from the vehicle interior
ably of circular cross-section, which communicate at their
33, and with the nozzle 32 being productive of an area of
upper ends with the interior of said duct 29; each of said
vertical ducts 21 is disposed upon the upper end of a 40 reduced pressure adjacent its upper end enhancing the
force of the updraft so as to promote ei?cient and reliable
section 22 of cooling tower C. At one of its ends, duct
cooling of the vehicle interior.
20 mounts a centrifugal, suction fan, as schematically in
Thus, the foregoing illustrates the extreme versatility
dicated at 23, for drawing air from the surrounding atmos
of the present invention wherein wind currents, forced
phere into said duct, interiorally of which there is provid
ed an elongated, converging nozzle 24, the intake or larger 45 air currents, or relative wind movements may provide the
motive force for e?icient operation and with the novel
end of which is disposed immediately adjacent fan 23, with
of rectangular cross-section, being ?xedly supported upon
its smaller or discharge end located inwardly of, and ad
jacent the opposite end of, duct 2%, outwardly of the
arrangement of converging nozzles being productive of
strong updrafts for assuring cooling of the Ventilated
space as well as the ejection therefrom of foul air or gases.
immediately adjacent vertical duct 21. Nozzle 24 is of
rectangular cross—section with its intake end substantially 50 It is apparent that any form of the present invention
may be most economically manufactured ‘and cheaply in
of the same dimensions as duct 20 for ?lling same in the
stalled for use with the particular enclosure; and in that,
area of engagement.
further, the operation of the same is reliable and sub
By operation of fan 23, a forced air current will be
stantially cost-free.
created in duct 2t},- being driven through nozzle 24 where
It should be understood that changes and modi?cations
in, due to the converging character of its walls, the pres 55
in the formation, construction, arrangement, and com
sure of the air current is converted into a relatively high,
bination of the parts of the ventilator may be made and
increased velocity so that an area of reduced pressure is
substituted for those herein shown and disclosed without
developed adjacent the nozzle discharge end.
departing from the nature and principle of my invention.
Within each duct 21 there is ?xed a vertically arranged
Having thus described my invention, what I claim and
nozzle 25, the upper, narrow, discharge end of which pro
desire to secure by Letters Patent is:
jects into duct 26 spacedly below the confronting wall
A ventilator comprising a horizontally disposed wind
portion of nozzle 24. Cooling tower C is provided at
duct having a windward end and a discharge end, a ?rst
its upper end, beneath ducts 21, with a hot water inlet,
nozzle being tapered throughout its entire extent for con
as at 26, for entry of water within each section 22, and
at its lower end with a cool water outlet 27; the normal 65 vergence toward a reduced discharge end disposed co
axially in said wind duct with its larger or intake end
adjacent the windward end of said wind duct, said re
or dividers 29 between sections 22. As indicated by the
duced discharge end of said ?rst nozzle being located
arrows, warm, moist air in sections 22 will be drawn
spacedly from the discharge end of said wind duct, a
upwardly through nozzles 25 as a result of the suction
created by the forced draft through nozzle 24 and the 70 vertically disposed draft tube communicating with said
water level being indicated at 28, beneath the partitions
wind duct beneath said ?rst nozzle and being disposed
slightly windwardly of the discharge end of said ?rst
nozzle, a second nozzle being tapered throughout its en
zones of lowered pressure developed by each, whereby a
tire extent for convergence toward its upper end, said
strong updraft is effected Within each of the ducts 21.
The air being withdrawn from tower C will ?ow counter 75 second nozzle being located coaxially within said draft
movement of air through nozzles 25, which nozzles thus
act to cause a mutual reinforcement of the respective
tube with its upper end being its discharge and narrower
end, the upper end of said second nozzle extending into
the wind duct and being disposed immediately adjacent
and beneath the ?rst nozzle windwardly of the discharge
end of the latter, and means for permitting swinging of
said wind duct together with the said first nozzle respon
sive to Wind action_
References Cited in the ?le of this patent
Fennerty ____________ __ June 27, 1882
Ruble ______________ __ Sept. 19, 1893
McDevitt ____________ __ Aug. 6, 1918
Great Britain __________ __ Jan. 2. 1940
Mottershall __________ __ Nov. 17, 1925
Masson _____________ __ July 26, 1927
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