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Патент USA US2130802

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‘Sept; 20,1938.
w. |_. KISLING
‘ 2,130,802
Filed April 26, 1937
2 Sheets-Sheet 1
Sept. 20, 1938.
Filed April 26, 1937
_2 Sheets-Sheet 2'
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William-L. Killing, St. Louis, 110.
Application April 2c; 1931,
No. 138,993‘
‘,My'invention relatesto'improvements in air
wardscirculation of the'air' from the fan-and.
circulating and cooling fans.
wilL-‘in addition, greatly facilitate the ?ow of
.1 1 The common electric or powerdriven fan now - the circulated air back into the direct air stream'
' used .for cooling and‘ circulating the airi'svvery
?owing o? the member for re-circulatlon there-_
5 ,ine?ective' in thatitsimplydirects a relatively ' _ with.
Actual experiments ‘have shown a sub- ‘
‘narrow blast of air forwardly along theline oi stantial increase in e?iciency brought about by
its axis and thus its'cooling effect isilimi'ted to -a ' this invention.
small area. Furthermore the air is not in reality circulated since itmoves in only one direc10 tion-(away from the fan) and as a result anyone} directly in'the path of the air will feelv an
actual draft of air while others outside the ?eld
will {feel no air movement at all. -
’ '
-Another object‘ is to provide a fan having an
improved air de?ecting and circulating means
which comprises a conical member arranged with 10
its apex adjacent; and .in alignment with the fan
axis with its sides. ?aring outwardly in the (11
rection of air travel from the fan and, .in con
In the attemptto widen the ?eld- covered by
15‘ thefan‘variolls de?ecting elements have been arranged in the path of theair blast and the most
e?ective oi'these has been a relatively v?at‘coni-
cal member placed immediately in front of the
nection therewith, another conical member re-\
versed in'position so that its apex is turned to- 15
ward the air returning to the fan to direct this
air out again into main air stream
Another object is to providean air de?ecting
, fan with its apex nexttothe fan center so ‘that and circulating element of this kind in the form
I 20 the air blast impinges the outwardly and mr- ‘ of a double cone with oppositely turned apices so 20
wardly?ari-ng sides‘, of the member; The air that. air striking either end, as it were, will be
is then directed outwardly in all directions and’ ‘directed outwardly to merge at the center in a
ofcoursé covers a wide ?eld; At the same time - common plane. Such an assembly supported in
there results from this arrangement a new and ' a Stream Of ail‘ from the .fan with One apex
_ 25 very advantageousmovement of the air‘ by which
turned toward the fan will de?ect the air out
. theair isactually seem cimulation, moving away wardly in all directions as will be evident. When “0
from the fan in an outwardly sweeping, swirling . this assembly is located overhead with the air
motion and then moving inwardly and back toward‘. the fan again.) yiTojazlimited extent. (the
aoereason for‘thisibeingjdescribed hereinafter) this
“air'as‘it reachesthe ran again .is drawn out-
ward into‘j'ethe airwstrearn ?owing Q?'the de?ect-
stream ‘directed downwardly the outward di
version thereof will cause the airto reach the
outermost con?nes of the room and then turn 0 0
inwardlyyalongthe ?oor picking up the coolest
air therefrom. Under the in?uence of continua
ing' member. anducontinues its circulation - The tion of this motion the air moves upwardly again
. ., action thus amountstoa .‘fre-eirculation" of the toward the fan and impinging the lower apex
35 .airiaind the eifecltglcan best :be described “as a " of the de?ecting element is diverted thereby out- 3 CH
gentle. draftless_;_and nondirectionairimove'mentwhich causes a‘ 'vrevitalizingand refreshing cool-V
nesssto'be efeltgequallyiin all parts vof the room.’
It is _found.,.in practice however-that the air:
40 v‘has a tendency to pocket in the open, concave.
side of” the de?ecting-element which of» course
wardly to enter theimain air stream again. In
thismanner the air is continuously circulated
and re-circulated... As the air reaches the fan
on its return from the ?oor it will be noted that
by my invention it meets an. element designed us
tosmoothlyand expeditiously guide it back into
interi’eres,‘greatlyjywjth _the'..~m0'vement ‘of the, _ the mainair stream WithOllt any resistance what
I . a1; bask. 'intmthe.‘ directjairl .lstream .?ms limit-j ; ever, whereas in the past the air has met with
ing,-_.the“fre-circulatinguvofzthegair as above‘ deep an actual pocket, formed by the concaved lower
45 scribed. sAlsloisincesthese fansaremo‘st expedi-r face of the‘ de?ecting element. The continu- 45
tiously'mountedwithi-the;fan. axis'in a vertical. ous circulation of the air ,istherefore obviously
plant-:3 and‘ with .-thef;apex pfpthe de?ectingfele-s facilitatedand enhanced. Inasmuch as the 2,1!‘
menpupwardly, the concaveqside. offthis element ; stream ?owing o? the de?ecting element direct
is exposed downwardlylandshas an’ un?nished from the. fan of course is stronger'than the re
50_ appearance detracting'from‘ the desirable artistic ~ turn stream there is set up a suction acting at. 50
e?ectof the fan?fr
the; edge of the element which aids the action
:With the foregoing'factsi'in' mind it is‘ the main. of my ‘invention in that it draws the return air
object‘ of: my invention to. providelan improved ‘ out ‘to the direct air stream for re-circulation
form-of- ‘de?ecting member for use with‘ a fan as
' '55 described and .wh'ich-will'cause the desired out-
therein , whereas in the previous structure this'
action has only created a vacuum beneath the 55
2 .
fan which furthered the formation of the air
pocket aforesaid. Thus'in all respects my “dou
ble-ended" de?ecting element is of advantage
over the hitherto used single element and addi
upper ends beneath the screws I2 and at their
lower ends secured by screws 28 to the upper
rim of .theshell. This shell 24 is located at a
level just below the lower end of the housing I!
tionally enhances the appearance by giving a
and thus while both the motor‘ l3 and fan 2| are
?nished effect to the assembly. In fact, my struc
concealed and protected by these parts there still
is left more than adequate space for air circula
ture makes possible an entirely new principle
of air re-circulation. not hitherto conceived of _ tion around the fan.
Another vobject of my invention is to provide
an improved fan assembly‘as a whole wherein
not alone is'my improved de?ecting element and
principle embodied but wherein this element,
the fan and its motor are all enclosed and pro
Both the housing I I and the shell 24 may be
very attractively ornamental in both shape and 10
?nish and lamp sockets, as at 21,_may be mount
ed on the assembly so that it combines the func-‘
tions of fan and lighting ?xture or chandelier.
The structure so‘far recited of course will op
15 tected by an ornamental and attractive housing
erate to direct a blast of air directly-downwardly 15
which-may carry the lights for the room as; well from the fan thus having only a limited ?eld or
as the fan and in which is included an improvedv usefulness and causing only a single, current of
motor mounting means supporting the motor re-, air without any circulation of the‘ air around the
siliently so that no vibration can be transmitted
20 to the fan and housing.
With these and other objects in view the in
vention resides inv the novel construction and
arrangement of parts as hereinafter fully set
forth and claimed, reference being had to the
accompanying drawings as showing preferred
embodiments of my invention for purposes of
In the drawings:
entire room.
To bring about a de?ection of the air all about
the room a de?ecting member, plate or head 28
is provided, the same being in the form of a rela
tively ?at truncated cone of any suitable diameter
at its outer margin 29. The ?attened apex 30
of this plate is located beneath and atlthe cen
ter- or axis of the fan 2| and the sloping and
?ring sides 3| then extend outwardly below the
fan bladesas shown. The plate is supported in
Figure 1 is a vertical cross sectional view
through an entire fan assembly constructed in
accordance with my invention.
Figure 2 is an inverted plan view of the fan.
Figure 3 is a side elevation of the improved
1y outward and turned upwardly inside the shell
24 where they are secured at 38. By this ar
rangement the plate 28 is supported slightly below
de?ecting member alone.
the level of the shell 24 which facilitates the ?ow ,
Figure 4 is a diagrammatic view on a reduced
scale showing the action of the air moved by the
this position'by arms 32 secured at 33 to the
rim or margin 29 of the plate and extended radial 30
of air of!‘ the plate without interference from 35
the shell.
Now as the air thrown downward from the fan
Figure 5 is a view similar to Figure 3 showing
a modi?ed form of the invention.
Figure 6 is an enlarged cross sectional detail
view of the resilient motor mounting. '
In carrying out my invention as shown in the
strikes the plate 28 it is de?ected laterally and
outwardly in all directions and sets up a' down—
wardly and outwardly sweeping motion as indi 40
cated by the arrows in Figure}. This motion
then turns into an inwardly and upwardly moving
drawings Iprovide a supporting column 5 adapted stream also as shown in the same view and the
to be suspended from the ceiling in well known ‘ air ?nally reaches the Ian again after having
manner and attach to the lower end thereof a made a’ complete circuit out to the walls and
crowfoot 6 having radially extending arms ‘I across the ?oor of the room as will be under 45
apertured at 8 near their outer ends and having stood.
their extremities 9 turned downwardly and pro
To take this upwardly moving already circu
vided vwith tapped holes "I. This crowfoot 6 sup
lated air and‘ recirculate it causing it to reenter
ports the whole assembly and is enclosed and con
the air stream ?owing o?’ the plate 28, I pro
cealed by a cylindrical housing ll a?lxed to the vide another cone shaped plate or member 35 50
ends 9 by screws l2 as shown.
The electric
which is mounted in an inverted position below
motor I3 is supported within (and concealed) the plate 28. This plate 35, hereinafter termed
by this housing I I by studs H extended from the the lower plate, is not truncated and has its
upper end of the motor and passed loosely through pointed apex 36 turned downward with the sides 55
the openings 8 in the crowfoot. Rubber collars
ii are placed on the studs I4 above and below
the crowtoot arms I and while engaging the studs
nicely are themselves spaced Irom‘the arms by
washers l6 which have marginal rims I ‘I enclos
ing the edges of the collars and inner ?anges
l8 which engage the openings 8 and center the
studs out of any contact with the arms ‘I.
washer i9 is placed a top each assembly and nuts
31 ?aring outwardly and upwardly to the rim or
margin 38. The rims 29 and 38 of the two plates
are secured together in any suitable manner as
by: welding making a unitary assembly of the
w o e.
stronger current of air ?owing past direct from
motor is suspended entirely on rubber and will the tan and merges therewith. The air is thus
not transmit anyvibration to the‘ crowioot and re-circulated constantly about the room so long
65 20 are screwed on'the studs. In this manner‘ the
parts supported thereby.
A fan 2! of any suitable form_ and size is se
cured to the depending shaft 22 of the motor l3
and turns below the housing H. The fan is'lt'selt
with the addition of this lower plate 35 the air
?owing upwardly toward the fan meets the plate
and is directed thereby out in a radial direction
on’ the' rim 38 where it meets‘ the relatively
as the fan is in operation and the e?iect is a re
vitalizing Ireshing of the air which cools the
whole room without causing a draft at any point. 70
Heretofore only the upper plate 28 has been
enclosed around its outer side by an annular shell used and as a result the concave lower face 39
or drum 2‘ of greater diameter than the fan and . thereof has‘ been exposed} not alone to. the detri- >
which is suspended from the housing ll by radial
ment of the appearance of the unit, but, more
75 ly extending and ?aring arms 25 secured at their important, to the hindrance of the circulation 75
' of the air. This for the reason that‘ the up-' the face of the single plate a real and tangible '
I wardly moving current of air upon reaching the re-circulation has not been possible. It is fur
plate would form a pocket in this concavity and ther thought that the assembly of the fan as a
' ' to a great extent would not reenter the air stream‘ whole is new and is of advantage not only from
from the fan. Furthering this action the rush of
air o?f the margin of the plate would have a
the standpoint of appearance but also for the
reason that the shell surrounding the fan aids the
operation by con?ning the air ?ow so that it all
tendency to form ‘a relative vacuum below the
plate. The use of another inverted plate as 1 do ‘ must needs strike the de?ecting element.
The bringing of the apex of the lower plate 35
however completely eliminates the air pocket and
all'the’air reenters the direct. air Stream being ' to a point is important so that-no obstruction
directed thereinto by the shape of the plate and vwill be formed to hinder the directing of the air
at the same time socket into the stream as it equally out intov the direct air stream for re
rushes oif the upper plate. In fact, the lowerv
plate 35 streamlines the assembly and so doing of
course facilitates and guides the ?ow of air past
the plate in the desired direction.
Actual vtests have shown thereto be a consid
erableforce in'the air ?owing up to the center of
the fan and in Figure 5 is shown a means where
by advantage of ‘this’ force is taken to further
increase the circulation.
In this assembly the
_ upper and lower plates "(t-35a are as described
hereinbefore but from the center of the lower
plate a small shaft 40 is depended and a small
fan ‘I is journaled thereon. This fan ll thus
may turn‘ in a horizontal plane and under the
in?uence of the upwardly moving air ?ow will
be set in motion. As a result this air stream will
be thrown outward into the direct air stream and
at the same time the velocity and force of the up
ward stream will be increased to some extent at
least by the rotation of this fan.
It is submitted that this principle oi.circula.
tion and recirculation of air ‘by an overhead fan
has not been conceived before this invention even
though a conical plate has been used in connec
tion with fans of various kinds. In fact due to
the formation or‘ an air pocket as described in
. While I have herein set forth certain preferred
embodiments of my invention it is understood
that I may vary from the same in minor struc
tural details ‘so as best to provide a practical
device for the purposes intended, not departing
from the spirit of ‘the invention and within the
scope of vthe appended claim.
I claim:
An overhead circulating fan assembly compris
ing, a support, a fan and motor suspended from
the support with the fan arranged to operate in
a horizontal plane beneath the motor, an annular
fan guard shell supported around the fan, a
double cone de?ector member supported below the
fan and comprising an upper conical member
having its apex turned upwardly toward the .fan,
and a lower conical. member-v having its apex 30
turned downwardly away from the fan, the base
of the cones being secured together and being of
smaller diameter than the said shell, and arms ‘
extended radially between the shell and the junc
tion between the cones for supporting the cones 35
concentrically with respect to the shell.
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