close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2127866

код для вставки
NOZZLE STRUC'I‘URE FOR BURNERS FOR LIQUID FUEL
Filed ÜCÍ". 5, 1935
1
l
im
w
\\
\\\\\
\
«
\
x
‘ì
ATTORNEYE
Patented 'Aug. 23, 1938
2,127,866
UNITED lSTATES PATENT QFFICE
2,127,866
NOZZLE STRUCTURE FOR BURNERS FOB
LIQUID FUEL
Alfred Robert Haase, Hollis, N. Y.
Application October 5, 1935, Serial No. 43,697
4 Claims.
V
This invention has general relation to oil or
other liquid fuel burners of the gun type in which
the fuel is fed under pressure to the spray tip
and ejected therefrom in a conical spray.
'I'he present invention is more particularly dl
rected to an improved nozzle structure which
functions to more emciently burn a heavier type
and less expensive grade of liquid fuel.
The improved nozzle structure embodies a
10
tubular casing having an air intake at its rear
end. an outlet at its forward end adapted to
communicate with the combustion chamber of a
» furnace, a liquid fuel supply extending into said
casing and terminating in spaced relation with
the outlet for supplying under pressure a jet of
fuel in the form of a conical spray and means
_ providing a discharge outlet for the spray and for
producing an intermixing of the air and spray
so that combustion of the spray takes place as
20 the same emerges from the discharge outlet.
This construction avoids the premature burning
of the spray adjacent the spray tip and before the
spray is intimately mixed with the air, since by
(Cl. l58--78)
embodiment of the invention, while the appended
claims cover variations and modiiications thereof
which fall within the scope of the invention.
In the drawingr‘
Fig. 1 is a vertical longitudinal sectional view
of a nozzle constructed in accordance with the
invention, taken approximately on line I-I of
Fig. 2.
Fig. 2 is a plan view thereof with the upper
sections of the nozzle removed.
10
Fig. 3 is a front end view thereof.
_
Referring to the drawing by characters of ref
erence, l0 designates a tubular casing having an
air intake at the end which is disposed remote
from the combustion chamber of the furnace and 15
which is hereinafter termed the rear end. and
a discharge outlet at the opposite end which is
hereinafter termed the forward'end and which
extends into and communicates with the corn
bustion chamber of the furnace so as to discharge 20
thereinto a mixture of air and fuel, the casing
lll being formed with horizontal supporting ledges
this construction the spray has expanded into a Il extending longitudinally and rearwardly from
the forward end thereof. Within the casing is
26 relatively large cross sectional area at the dis
charge outlet, at which point ignition begins so ' arranged a horizontal transverse bracket i2 pro 25
as to produce a burning jet within the combus-- vided with terminal eyes I3 supported upon ~the
tion chamber of the furnace of relatively larger ledges II and provided with depending ears i4
secured to the casing by screws or equivalent
cross sectional area than where the ignition be
‘ fastening means l5. A spray tip i6 is supported
30 gins adjacent the spray tip.
'I'he invention further comprehends a nozzle medially by the bracket I2 in spaced relation to 30
structure having means defining a carbureting the forward end of the casing and is connected by
chamber for mixing the air with the fuel spray,
Awhich means is adjustable for properly locating
the same with reference to the fuel spray so as
to obtain a maximum degree of efficiency from
the fuel consumed.
i
More “particularly the invention resides in an
improved structure for a liquid fuel burner of
40 the pressure type which embodies means defining
a carbureter chamber which means is adapted
to be adjusted so as to accommodate varying vol
umes of air and fuel fed to the nozzle for obtaining
the proper mixture of air and fuel so as to attain
45 a maximum efficiency from the fuel constuned.
Other objects of the invention are to provide
a nozzle structure which is extremely simple in
its construction and mode of use, which is eco
50
nomical to produce, install and maintain in work
ing condition and which is highly eflìcient for its
intended purpose.
With the above enumerated and other objects
in< view, reference is made to the following speci
ilcation and accompanying drawing in which
there is disclosed, by way of example, a preferred
a supply pipe Il for feeding oil or other liquid I
fuel under pressure to the spray tip from which
the fuel is ejected into the combustion chamber
of the furnace through the forward end of the
casing in the form of a conical spray.
In order to provide means for producing an
effective intermixing of the air and spray so that
combustion takes place adjacent the discharge
outlet of the casing, a rearwardly flared hollow
frusto conical de?iector IB is provided within the
casing between the outer end thereof and the
spray tip to define a mixing chamber within the
casing. 'I‘he defiector I8 is located adjacent the
forward end of the casing lli and is so spaced
relative to the spray tip I 6 as to cause the pe
riphery of the opening I9 to coincide with the
periphery of the spray. This prevents the escape
of the air around the spray and insures proper
intermixing thereof at the point of emergence.
while avoiding smoking which would result from
ou
interception of any appreciable amount of the
spray by the defiector and the carrying of un
aerated fuel around the outer edges of the de~
flector. The forwardly tapering inner face 2li of 55
2,127,866
2
the defiector Il directs the air passing through
the casing into the spray as the same emerges
through the opening Il in the forward end of
the defiector I8 thereby producing an intimate
mixture of the air and spray at which point igni
tion begins so as to produce at the opening I9 a
burning jet of relatively large cross sectional area.
This construction avoids the premature burning
of the spray adjacent the spray tip at which
point the spray is not sufficiently mixed with air
to obtain the best results and the maximum em
ciency oi' the fuel.
The nozzle is capable of use for varying capaci
ties, of fuel to be burned in predetermined limits
by employing interchangeable spray tips having
varying capacities, while the volume of air ad
mitted through the air intake of the casing I0
is varied to maintain the proper mixture. When
the maximum volume of fuel is to be fed, the
defiector Il is located at its greatest distance
from the tip substantially atthe forward end of
the casing and when a lesser amount of fuel is
to be fed the defiector llis moved rearwardly into,
a closer relation to the spray tip.
'I‘he casing I0 may also be provided with a simi
larly flared hollow frusto conical rear defiector 2|
arranged between the spray tip I6 and the de
flector Il and the deflectors Il and 2| may be
longitudinally adjustable towards and away from
each other and towards and away from the spray
tip so as to accommodate varying volumes of air
and fuel admitted to the nozzle for attaining the
proper mixture thereof. The defiector I8 is pro
vided with bosses 22 at opposite sides thereof,
the lower surfaces 22 of which are slidably sup
ported on the ledges || and a rod 24 is secured to
each boss and extends rearwardly therefrom and
is slidably engaged within bores 25 of the eyes I3
to permit of the longitudinal adjustment of the'
40 said defiector. When the defiector I8 is adjusted
to the desired position on the rods 2l set screws
2t tapped through the eyes I2 secure the same in
adjusted position.
The rear defiector 2| is provided with laterally
projecting lugs 21 having bores 2l to slidably
mount the same on the rods 24 and set screws 29
serve as means for locking the rear defiector in
adjusted position. The casing I0 is provided
with a removable upper rear section 30 for gain
ing access to the spray tip I6 and to electrodes
Il providing a spark gap adjacent the spray tip
and for facilitating the adjustment of the deflec
tor members.
-
When the rear defiector 2| is used‘in conjunc
La Cv tion with the defiector Il and the maximum vol
urne of fuel is to be fed, the defiector |8_ is set at
a position at the forward end of the casing with
the rear defiector 2| adjusted rearwardly to a
position separated from the outer defiector I8.
When a lesser amount of fuel is to be fed, the
defiectors Il and 2| are moved into closer rela
tionship with each other and set in a position
closer to the spray tip.
What is claimed is:
1. A liquid fuel burner including a spray tip
(15
from which the fuel is ejected under pressure in
the form of a conical spray, a tubular casing sur
rounding said spray tip and having an air intake
at its rear end and communicating with the com
70 bustlon chamber of a furnace at its forward end,
a pair of longitudinally spaced rearwardly flared
rear and forward hollow frusto-conical defiector
members, the forward member defining a port
of greater diameter than the diameter of the port
of the rear member and said members being ar
ranged within said casing with the periphery of
the rear member in spaced relation with the inner
Wall thereof, said rear member being adjustable
towards and away from the forward member and
towards and away from the spray tip for con 10
trolling intermixing of the air and the fuel spray
as the mixture is projected into the combustion
chamber of the furnace.
2. A liquid fuel burner including a tubular
casing having an air intake at its rear end .md 15
having communication at its forward end with
the combustion chamber of a furnace, a spray tip
located coaxially within and extending axially of
said casing intermediate its ends and through
which fuel is ejected under pressure towards the 20
forward end of the` casing, said casing having
longitudinally extending horizontal ledges along
its opposite sides and extending rearwardly
from its forward end, and a rearwardly flared
hollow frusto-conical defiector within said casing
supported upon said ledges and slidable there
upon longitudinally of said casing for effecting
an interrnixlng of the air and fuel spray dis
charged through the defiector into the combus
30
tion chamber of the furnace.
3. A liquid fuel burner including a tubular
casing having an air intake at its rear end and
adapted to communicate at its forward end with
the combustion chamber of a furnace, a spray tip
located coaxially within and extending axially of 35
said casing intermediate its ends and through
which the fuel is ejected under pressure towards
the forward end of the casing and a rearwardly
flared hollow frusto-conical defiector element
apertured at the forward end to define an out 40
let passage, said defiector element being arranged
within and adjustable longitudinally of the cas
ing between the forward end thereof and a posi
tion spaced from and in advance of the spray tip
so as to effect an intermixing of the air and fuel
spray and burning of the same as it is discharged
through the outlet passage of the defiector after
initial ignition adjacent the spray tip.>
4. A liquid fuel burner including a tubular
casing having an air intake at fts rear end and 50
having communication at its forward end with
the combustion chamber of a furnace, a spray tip
located coaxially within and extending axially of
said casing intermediate its ends and through
which the fuel is ejected under pressure towards
the forward end of the casing in the form of a
conical spray increasing in diameter towards the
forward end of the casing, a rearwardly flared
hollow frusto-conical defiector element open at
its forward end to define an outlet passage, said 60
element being mounted within said casing for
longitudinal adjustment so as to dispose the pe
riphery of the outlet passage to coincide with the
periphery of the spray at the point of emergence
of the same from the defiector element for caus
ing the fuel after initial ignition to begin to burn
at its point of emergence from the outlet pas
sage of the defiector.
ALFRED ROBERT HAASE.
70
Документ
Категория
Без категории
Просмотров
0
Размер файла
426 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа