close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2121242

код для вставки
June 21, 1938.
R. BARRON
2,121,242
EXHAUST MUFFLER
Filed April 16. 1957
_ltàß
.LI
//V//[/V TOR
R BÄR/'70N
if@
@rr ÃÉÍ
2,121,242
Patented June 21, 1938
UNITED STATES
PATENT ` oFFicE
2,121,242
EXHAUST MUFFLER`
Ray Barron, Toronto, Ontario, Canada
Application April 16, 1937, Serial No. 137,297V
4 Claims.
(C1. 181-53)
My invention relates to improvements in ex
haust mufflers, and the object of the invention is
to devise a muiller which will eliminate the ob
jectionable noise carried in the exhaust and, at
5` the same time, eliminate all back pressure of the
engine, and it consists essentially of the arrange
ment and construction of parts all as hereinafter
more particularly explained.
Fig. l is a perspective View of my muffler inter
10 -mediately broken away and a portion of the ex
haust pipe to which it is connected.
Fig. 2 is a longitudinal sectional view through
Fig. l.
Fig. 3 is a transverse sectional view.
15
Fig. 4 is a perspective fragmentary detail of
the outer end of the exhaust pipe.
Fig. 5 is a perspective detail of a pair of de
fleeting discs separated apart and as used in the
exhaust pipe.
20
Fig. 6 is a perspective detail of a pair of de
fleeting discs surrounding the exhaust pipe.
In the drawing like letters of reference indi
cate corresponding parts in the different views.
I is the exhaust pipe leading from the engine
25 which is enlarged as indicated at Ix. The outer
end of the enlarged portion of the exhaust por
tion IX is provided with radial lugs 2 between
which lugs are located notched openings 3
through which the exhaust gases pass. 4 is an
30 outer tube surrounding the enlarged portion of
the exhaust pipe and spaced therefrom as indi
cated in Fig. 2 and provided at its outer end with
an end head 5 provided centrally with an in
wardly extending conical portion 6 and an end
35 head 1 provided with a central opening 8 in
which the inner end of the enlarged portion IX
of the exhaust pipe ñts.
IIJ are a series of openings spaced apart around
the periphery of the tube 4 adjacent its inner end
40 and from which extend a series of small pipes 9.
The inner ends of the pipes 9 are curved to fit
into the openings I8, the opposite or outer ends
of the pipes being open and extending preferably
slightly beyond the end head 5. Within each
45 pipe 9 is fitted a metal strip II which is twisted
into spiral form so that the gases passing there
through are directed spirally and are also pre
vented from any tendency to direct return move
ment to increase back pressure.
50
I2 and I3 are a series of pairs of discs pro
vided with central openings I4 and l5. The discs
I2 and I3 are cut radially preferably in V form
and the intervening tongues I6 and I1 are twisted
in opposite directions to assume an inclined posi
55 tion. I8 and I9 are nuts which are screwed on
to the threaded'poritons 2l and 22 of a central
rod 28, which rod extends through the central
openings I4 and I5 of the discs I2 and I3, the
discs being spaced an equal distance upon the rod
and separated apart by spacing sleeves 20X.
23 and 24 are discs provided with central open
ings through which the enlarged portion IX of
the exhaust‘pipe fits tightly, the peripheral edge
of each disc being provided with V notches 25
and 2B spaced equal distances apart leaving 10
tongues 21 and 28. The tongues 21 and 2B of
each pair of discs 23 and 24 are twisted in oppo
site directions. The discs 23 and 24 fit around
the enlarged portion Ix so as to fit the interspace
between the exhaust pipe and the tube 4.
15
By means of the discs I2 and I3 and 23 and 24,
the gases passing first through the exhaust pipe
are given a Zig-zag direction by means of the in
clined tongues I6 and I1 and after passing
through the notched openings 3 into the inter- 20
space between the exhaust pipe and tube 4 are
directed in the opposite direction past the discs
23 and 24, the inclined tongues 21 and 28 thereof
also imparting a zig-Zag movement to the gases
which are ñnally emitted through openings I0 25
into the tubes 9, the central strip II of which
also imparts to the gases a spiral movement. This
zig-zag movement has a tendency to retard any
return movement of the gases and, therefore,
prevent any back pressure taking place. At the 30
same time, the impingement of the gases upon
the vanes I6 and I1, 21 and 28 serve to absorb the
noise vibrations and, therefore, the gases are
emitted from the muflier with very Ilittle sound,
in fact, no sound which is objectionable.
35
It will also be noted that the exhaust pipe,
exhaust pipe enlargement, tube 4, and the pipes
9 increase in area by definite steps so that a freer
flow of the discharging gases is-effected.
It may also be stated that the combined area 40
of the spaces between the vanes I6 or I1 of the
disc I2 or I3 is equal in area to the area of the
exhaust pipe I and the combined area of the
spaces between the vanes 21 or 28 of the disc 23
or 24 is slightly greater in area to the enlarged 45
portion IX of the exhaust pipe.
From this description it will be seen that I
have devised a very simple form of mufller which
will absorb all noise vibrations carried in the
exhaust from the engine and which will, at the 50
same time, eliminate back pressure keeping the
engine cool and bringing about other essential
advantages.
What I claim as my invention isz
1. In an exhaust muffler, inner and cuter con- 55
2
2,121,242
centric tubes spaced apart, the inner tube hav
ing its outlet into the outer tube at its forward
end and the outer tube having its outlet at the
OW
rear end, a stationary baffle device within the
innermost tube comprising a rod extending lon
gitudinally and centrally of the tube, individual
discs mounted on the rod in spaced apart posi
tion and formed fan shaped, the blades of one
disc being set in an oppositely inclined direction
to the blades of the next adjacent disc and
against which the exhaust entering the mufñer
impinges as it passes through the innermost tube
directing the exhaust in opposite directions and
between the blades as it passes longitudinally to
the outlet, and a series of annular discs spaced
apart and surrounding the innermost tube and
having its annular edge slit radially and bent
between the slits to form defiecting vanes and
intermediate passageways between the vanes for
the exhaust.
2. In an exhaust muñier, an inner tube having
peripheral orifices at its forward end, an outer
tube concentric with the inner tube, a closure
for the forward ends of the inner and outer tubes,
25 and a stationary bañle device in the inner tube
comprising a rod extending longitudinally and
centrally of the inner tube, individual discs
mounted on the rod in spaced apart position and
formed Ian shaped, the blades of one disc being
30 set in an oppositely inclined direction to the
blades of the next adjacent disc and against
which the exhaust entering the Inuil‘ler impinges
as it passes through the innermost tube directing
the exhaust in opposite directions and between
the blades as it passes longitudinally to the out~
let, and baffling means for the exhaust inter
posed between the inner and outer tubes and
against which the exhaust also impinges as it
passes to the outlet.
3. In an exhaust muiller, an inner tube having 10
peripheral oriiices at its forward end, an outer
tube concentric with the inner tube, and a closure
for the forward ends of the inner and outer
tubes, a stationary baille device in the inner tube,
and a baille device between the inner and outer
tubes comprising a series of annular discs spaced
apart and surrounding the inner tube and hav
ing the outer annular edge of each disc split
radially and bent between the slits to form vanes
and intermediate passageways between the vanes 20
» for the exhaust.
4. In an exhaust muñier, an inner tube having
peripheral oriñces adjacent its forward end, an
outer tube concentric with the inner tube and
having peripheral orifices adjacent its rear end,
a closure for the forward ends of the inner and
outer tubes, and a tube extending forwardly from
each rear peripheral oriñce to the forward end
of the muñler.
RAY BARRON.
30
Документ
Категория
Без категории
Просмотров
0
Размер файла
295 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа