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Патент USA US2409497

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~ Oct. 15, 17946.
T_ R, KELLEY
v
~
2,409,496
EXHAUST GAS DEFLECTOR FOR INTERNAL-COMBUSTION ENGINES
'
Filed Jan. 8, 1943
2 Sheets-Sheet l
FIG-2 '
INVENTOR
ATTORNEY
0a. 15, 1946.
‘T. R. KELLEY
'
2,409,496
EXHAUST GAS DEFLECTOR FOR INTERNAL-COMBUSTION ENGINE-S
Filed Jan. 8, 1943
2 Sheets-Shéet 2
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2,409,496
Patented Oct. 15, 1946
ltiUNITJE'D STATES
’ PATENT
OFFICE
; 2,409,496
"EXHAUST GASDEFLECTOR FOR INTERNAL
GOMBUSTION ENGINES
".Theron R.~.Kelley,' Spring?eldfOhio,'assignor. to
‘The National Supply Company, Pittsburgh, Pa...
..a corporation of Pennsylvania
Application January 8, 1943, ‘Serial N0.- 47117374
5 Claims. (01. ‘181-413)
2
. improved " exhaust .gas. de?ector .for . use :Withv in
:spreader - positioned ;in stheq-axial spathwof. the
. stream of. ‘the cooling .liquid 1.511011 :that ‘the :cool
".ternahciom-bustion engines,..par.tic.ularly of the
.ing‘liquid vwill ‘be positively and forcibly idirected
My invention relates ‘to the construction .of an
. towards anplurality of<symmetrica1ly spaced heli
type used in marine service.
In. using .an internal combustion engine for 5 =cal- ?ns :integra'lly‘iformed. with theinner wall of
. the ".de?ector bodywtmmorer- completely break .up
marine propulsion it is common practice to ad
-. the cooling» liquid stream. and. thus create. a :de
~mit a small stream of water from a circulating
‘51 fiected :spray 1 which ‘:more effectively .intermingles
pump vand system through the exhaust pipe in
Withithe ‘ hot exhaust. gases :inuorderpthat they
order to chill and contract the hot gases and
.may‘ be rapidly cooled andethus reduce .the .noise
[absorb .the ‘heat therefrom while the gases are
.and back: pressure. onithe ‘engine.
passing through said exhaust pipe. This pro
4A-nother :object .oftthis :invention ;.is .zto provide
cedureld‘ecreaseszthe loud noise from the engine
.an exhaust gasdeiiector for an. internal. combus
exhaust and quiets the running of the engine as
..tion.. engine *whereinmeans are. .provided to, im
well. asrreduces the exhaust gas temperature and
“back pressureto.v an efficient and safe degree for 14: -_part .a. swirlingsmotion;to.;.a> liquid>cooling :me
,.
dium and the exhaust gases passing therethrough,
which action suddenly chills the .~ hot exhaust
~A muffler maybe usedin place of the stream
gases, 1 causing-a. very . rapid .heat transfer, ‘which
of water and while tests show that an internal
turn;zquickly'zreduces ‘their. .volume .and'sets :up
combustion engine'used for marine propulsion so
equipped is much quieter in its operation than 20 .a suctionzor .;pull:through the‘ exhaustpipe,v which
causes'themixtureiofeexhaust vgases vaand de?ected
one_ using a streamv of Water passing through the
:spray to rush {through the exhaust gpipeland, on
exhaust pipe, it is .also proven that the use of a
:;out rtoythe. atmosphere-,pmater-ially decreasing the
mu?ler sets up an appreciable back pressure and,
;;noise and :back pressure ;on the engine.
therefore, itsuse is not entirely satisfactory.
IIfhe principal object of this invention is to pro 25 Other t0bj?CtS€z2l1diIlt8IldBd advantages .of this
invention‘ :will clearly: appear from the 1 following
vide as Acompletesudden intermingling of a cool
. economical operation.
cparticular description. and appended claimsrtaken
ant liquid with thehot exhaust gases from an
» in :connection _. with Jthe. accompanying cdrawings
internal-combustion engine as possible-to accen
. eillustrating..ztheizpreferred embodiment ,of, my, in
tuatethe rapid heat transfertfrom the hot gases
to thelcoolingsliquid in order to be able to use 30. mention‘ ‘in .l-zwhich .; like . parts . are designated . by
likesnumerals.
as-shortan exhaust pipe. as practcial and thereby
.lissanexternal ‘elevationaliview .ofqthe
reduce noise-and back pressure to a minimum.
jdé?BCtOl' bodyror hollowcoupling.
Another object of thepresent invention is to
Fig. 2 is a vertical .sectionathrough the hollow
provide. an :ef?cient :exhaust gas de?ector to be
usedin conjunction with a stream of cooling liq .35 vqcouplingembodying-my invention :and .taken on
tithe line tz-rzior Eigd.
v-uid flowing through. an exhaust pipe, wherein the
:; 'Eig; 3-is . a horizontal _ sectional view :taken ,on
stream ‘of cooling liquid is-?nely broken up and
x:thewline"zit-=3 :lofylifig. ~2_;showing the _helical;?ns
given .a swirling motion through the exhaust pipe
rand’ conicalz?uid :spreader construction relating
.inY-‘order- thatit -may more completely intermingle
with‘the exhaustgases and thus accentuate the 40 ‘to myinvention.
..Eig.;4 :isaan .assembly ,view, partially in. sec
.chilling e?ect onthe exhaustgases and thusrap
:tion; .of. .the, exhaust“ gasv deflector coupling :and
idly complete thetransfer of heat from said gas
‘coolant. liquid supply valveand ori?ce.
to the deflected spray of cooling liquid. vThis
:iFig: 5; is.;an.'elevationalview * of an internal com
procedure also reduces the noise of the exhaust
v4.5 bustionaengine; showing :the exhaust gas ‘de?ector
and the back pressureonthe‘engine.
_-,embodied- in: my; invention; in assembled relation
Anotherrobject of :this inventionis to provide
an- exhaust gas de?ector with a Water, or other
cooling liquid, dischargetorifice positioned to dis
' chargea stream of'waterior other. cooling liquid,
togsaidengine.
.the drawings the numeral l representsLgen
-.era11y; an “internal. combustion‘ engine; provided
axially through thedeflector body towards a plu 50 with5thesconventionalfexhaust:manifold 2. An
exhaustwpipejttingd is-attached to ‘the outlet
ralitywot/symmetricallyspaced helical ?ns inte
‘ end .of .the -manifold ; and; . a: short ‘section .of»; ex
grally’formed'within said body and‘ in the direc
whaustspipe dais, screw threadably positioned abe
tion: ofl?ow'of the exhaust'gases.
tween asaid. ?ttingand. a .hollow coupling or ex
:Another object of thislinventionvis to provide
an exhaust gas ‘de?ector with a :conical ?uid 55 haust gas-de?ector body -5. .Asecond and longer
2,409,496
3
4
section of exhaust pipe 6 is screw threadably at
exhaust gases to the relatively cool liquid is very
rapid. This sudden chilling e?ect rapidly con
tracts the hot exhaust gases and reduces their
temperature and volume materially. This creates
tached to the lower or outlet end of the cou
pling 5 as shown at ‘I.
A cooling liquid line B conducts cooling liquid
from a suitable source, not shown, to a control
valve 9.
in
From the outlet end of this valve a cool
ant liquid supply pipe I0 is screw threadably at
tached to the upper end of the bonnet ll of the
exhaust pipe ?tting 3. A second section [2 of
the coolant liquid supply pipe is screw threadably
attached to the lower or inner surface of the
bonnet, as at l3 and extends in a downwardv
course through the ?tting 3, short section of
exhaust pipe 4 and terminates in an ori?ce or
nozzle I4 just beyond the end of said pipe 4.
The bonnet II is conventionally secured to the
exhaust pipe ?tting 3 and is sealed against liq
uid or gas leakage through suitable packing l5
and cap screws or studs and nuts as indicated
at IS.
A plurality of symmetrically spaced helical ?ns
I1 and a conical ?uid spreader l8 are integrally
formed within the bore of the hollow coupling
or de?ector body 5. The conical ?uid spreader
I8 is positioned axially within the coupling bore
and extends upwardly above the helical ?ns I‘!
but below the ori?ce M. The apex 19 of the
conical ?uid spreader is directed counter to the
?ow of the coolant liquid and exhaust gas dis
charge through the coupling 5, which is indicated
by the arrow 20 cast on the external surface of
the coupling or de?ector body and shown in Fig. 1.
The helical ?ns extend radially in a helical
course from the outer surface 2| of the conical
?uid spreader to the inner wall 22 of the cou
pling.
In operation:
As soon as the internal combustion engine I
is started hot exhaust gases resulting from com
a partial vacuum in the exhaust pipe which in
turn sets up a suction or pull on the condensed
exhaust mixture causing it to rush through the
exhaust pipe in a continuous discharge seeking a
rapid exit to the atmosphere. Naturally this re
sult considerably decreases the noise from the
exhaust and the back pressure on the engine as
well as permitting the use of as short an exhaust
pipe as is practical.
While only a typical preferred form and appli
cation of my invention has been herein disclosed
I do not wish to be limited or restricted to the
speci?c details set forth and wish to reserve to
myself any further embodiments, modi?cations
and variations that may appear to those skilled
in the art or fall within the scope of the appended
claims.
Having thus fully described my invention, what
I claim as new, and desire to secure by United
States Letters Patent is:
1. An exhaust gas deflector adapted to be ax
ially inserted in the run of an exhaust pipe for
accentuating the discharge of hot exhaust gases
from an internal combustion engine, comprising
a hollow coupling with an axial bore there
through, a plurality of symmetrically spaced
helical shaped ?ns formed integral with the inner
wall within said bore, a conical ?uid spreader
with its apex slightly in advance of said ?ns and
formed integral therewith, a water discharge
ori?ce positioned axially within said exhaust pipe
to discharge a stream of cooling water in the
direction of flow of the escaping hot gases to im
pinge against the apex of said spreader and
rapidly swirl towards said helical ?ns, whereby
bustion pass through the exhaust manifold 2. 40 said hot exhaust gases and water are intimately
Automatically, at a predetermined temperature
intermingled, producing a sudden chilling effect
the control valve 9 in the liquid coolant supply
upon said hot gases and creating a partial vac
line 8 opens and admits the coolant liquid through
uum in said exhaust pipe that reduces back pres
the supply lines In and I2 to the ori?ce or nozzle
sure and noise of the engine exhaust.
I4 and hence into the exhaust gas de?ector or
2. An unitary exhaust gas de?ector for axial
coupling 5. As the coolant ?ows through the
insertion in the run of an exhaust pipe of an in
coupling 5 it strikes the apex I9 of the conical
ternal combustion engine through which hot ex
?uid spreader l8 and is diverted from its nor
mal straight course through the exhaust pipe.
It is directed forcibly against the helical ?ns H. r
The hot exhaust gases passing through the ex
haust manifold ?tting and pipe likewise strike
the conical ?uid spreader and are also forcibly
thrown against the helical ?ns ll.
The principal effect produced by the helical
?ns is to break up the de?ected coolant spray
and create a swirling motion to both the coolant
liquid and the hot exhaust gases being forcibly
drawn into intimate contact with each other
haust gases are discharged, comprising a hollow
coupling within the inner walls of which are in
tegrally formed a plurality of helical shaped ?ns
and a conical ?uid spreader, with its apex slight
ly in advance of said ?ns in a direction counter
to the ?ow of said discharge through said cou
pling, a water discharge ori?ce positioned to dis
charge a stream of cooling water axially through
said exhaust pipe in the direction of flow of said
hot exhaust gases to impinge against the apex
of said conical spreader, whereby said cooling
water is forcibly dispersed radially in all direc
while passing therethrough. This breaking up 60 tions, intimately intermingled with the hot ex
of the coolant liquid makes it possible for more
haust gases, forming a minutely ?ne gaseous
cooling liquid surface to be brought into contact
spray, producing a sudden chilling effect upon
with the hot exhaust gases than would other
said hot gases and creating a partial vacuum in
wise be possible. The sudden contact of the hot
said exhaust pipe which reduces back pressure
exhaust gases with the spray of the cool coolant
and the noise of the engine exhaust.
liquid accentuates the rapid heat transfer from
3. An exhaust gas de?ector for internal com~
the hot exhaust gases to the coolant liquid. The
bustion engines for accelerating the discharge of
mixture of hot gases and coolant liquid spray are
further intermingled as they are forcibly thrown
hot exhaust gases through an exhaust pipe, com
prising a hollow coupling axially positioned in‘
radially through the helical path, de?ned by the 70 the run of said exhaust pipe, a conical ?uid
?ns 11, against the comparatively cold inner wall
surface of the coupling and consequently out
into the discharge run of the exhaust pipe ‘6, the
inner wall surface of which at this point is also
~ relatively cool. The heat transfer from the hot 75
spreader and a plurality of helical shaped fins
formed integral with the inner wall of said cou
pling, the apex of said conical spreader positioned
slightly in advance of said ?ns in a direction
counter to the flow of said discharge through said
2,409,496
5
‘ coupling, a water discharge nozzle positioned ax
ially within said exhaust pipe to discharge a
stream of cooling water directly against the apex
of said spreader and in the direction of flow of
said hot exhaust gases, whereby said water is
forcibly directed against said helical ?ns to pro
duce a ?ne vapor spray causing a sudden chill
ing effect upon said hot exhaust gases, reducing
their volume and creating a partial vacuum in
said exhaust pipe which tends to rapidly pull the
hot exhaust gases through said exhaust pipe, thus
reducing the back pressure and noise of the en
gine exhaust.
4. An exhaust gas deflector for use with a sub
6
discharge through said coupling, whereby
through the intimate intermixing of the cooling
water and the hot exhaust gases a condenser
effect is established which breaks up the exhaust
pulsations and reduces the back pressure and
noise of the engine exhaust.
5. An unitary exhaust gas deflector for internal
combustion engines comprising a hollow coupling
axially positioned in the run of an exhaust pipe
10 from said engine and through which hot engine
exhaust gases are discharged, a water discharge
nozzle positioned to discharge a stream of water
axially through said exhaust pipe in the direction
of ?ow of said hot exhaust gases, said coupling
15 including a plurality of helical shaped ?ns formed
stantially uniform diameter exhaust pipe, for ac
integral with the inner wall of said hollow cou
celerating the discharge of hot exhaust gases
pling and a conical spreader formed integral with
therethrough from the operation of an internal
said ?ns and having its apex positioned between
combustion engine, comprising a hollow coupling
said nozzle and ?ns and in a direction counter
axially positioned in the run of said exhaust pipe,
to
the flow of discharge through said coupling,
a plurality of helical shaped ?ns formed integral 20
whereby said cooling water impinges against
with the inner wall of said coupling, a water dis
said apex with sufficient force to disperse said
charge nozzle positioned axially within said ex
cooling water radially in all directions forming a
haust pipe to discharge a stream of cooling water
?ne spray which completely intermlngles with
axially through the coupling toward the ?ns and
said escaping exhaust gases, breaking up the ex
in the direction of ?ow of the exhaust gases, a
haust pulsations in said engine and reduces back
conical ?uid spreader formed integral with said
pressure and noise.
?ns and located between said nozzle and ?ns and
THE-RON R. KELLEY.
having its apex directed counter to the ?ow of
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