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Патент USA US2118228

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May 24, 1938.
Filed Oct. 19, 1936
J66e/v/z Rive 11 21a
Patented May 24, 1938
Joseph Ravenna, Philadelphia, Pa.
Application October 19, 1936, Serial No. 106,429
1 Claim. (Cl. 158—-77)
This invention relates to burners and has for
the primary object the provision of an e?icient
and inexpensive device of this character which
will successfully break up crude liquid fuel into
small particles and mix the latter with air under
pressure or with steam to produce highly combus
tible gas or liquid capable of furnishing a maxi
mum amount of heat.
With these and other objects in view, this in
vention consists in certain novel features of con
stantially of conical shape, as shown at I 4, and
is journaled on the tube 5 with the tube extend
ing into the sleeve.
A core I 5 is carried by the tube 5 and is located
within the inner sleeve I2 and a portion thereof 5
is of a hollow formation, as shown at I6, to form
a fuel passage extending in the direction of the
conical shaped end I4 of the inner sleeve and is
in communication with the space between the in
ner sleeve and the core. A plurality of relatively 10
struction, combination and arrangement of parts
spaced annular ribs I ‘I are formed on the core
to be hereinafter more fully described and
For a complete understanding of my inven
-1‘ tion, reference is to be had to the following de
‘and provide therebetween annular grooves I8.
The annular ribs I‘! are located between the core
and the inner sleeve. The space between the in
ner sleeve and the core forms a fuel passage I8 15
Figure l is a vertical sectional view illustrating
a burner constructed in accordance with my in
and the purpose of the ribs and grooves is to in
terrupt the ?ow of fuel through the passage I9
towards the nozzle end of the body I. The pas
sage I9 is in communication with the passage ‘
scription and accompanying drawing, in which
Figure 2 is a transverse sectional view taken on
the line 2—2 of Figure 1.
Figure 3 is a vertical sectional view illustrating
a modi?ed form of my invention.
Figure 4 is a transverse sectional view taken on
the line 4—4 of Figure 3.
Figure 5 is a plan view illustrating a sleeve hav
ing a spiral groove forming one of the parts of
the burner.
Referring in detail to the drawing, the numeral
30 I indicates a tubular body having its thickness
increased adjacent one end, as shown at 2. Said
end forms a nozzle and the opposite end of the
body has integral therewith a head 3 provided
with openings 4. The head 3 forms a support
‘ for a fuel conducting tube 5 arranged centrally
of the body. The tube is threaded in an opening
provided in the head. The head is provided with
a threaded nipple 6 communicating with the tube
5 and has threaded thereto a tube ‘I. The tube 1
is supported by an air intake conduit 8, the lat
ter having a passage 9 and a screw threaded nip
ple I0 to which a liquid fuel supply is connected.
The air conduit 8 is suitably connected to the
head 3 for the purpose of directing air into the
; body I by way of the openings 4. Air under pres
sure is admitted to- the conduit 8 in any well
known manner.
The tube 5 forms a support for a rotor I I. The
rotor is free to rotate within the body I and the
air passing through the openings 4 impinges
against the rotor. Secured to the rotor II is an
inner sleeve I2. Said sleeve I2 projects a limit
ed distance from the nozzle end of the body and
is spaced from the wall to form a restricted air
55 passage I3. The inner end of the sleeve is sub
I6 and the tube 5 has a plurality of openings 20
to permit the fuel to escape from the tube into
the passage I6. A substantially conical-shaped
de?ector 2| is arranged on the tube within the
conical-shaped end I4 of the inner sleeve I2.
The fuel after leaving the tube passes through 25
the passage I6 to the de?ector 2| which deflects
said fuel into the passage I9. The fuel passes
through the passage I9 to the nozzle end of the
burner where it mixes with the air under pres
sure received from the passage l3. It is to be 30
understood that the fuel is forced into the tube
5 or said fuel is placed under pressure in some
suitable way. Therefore, the inner sleeve being
rotated by the rotor relative to the core will
bring about a thorough breaking up of the fuel 35
after it leaves the tube 5 and prior to reaching
the nozzle end of the burner so that the small
particles of fuel will thoroughly mix with the air
and become vaporized into a highly combustible
mixture capable of producing a maximum amount 40
of heat. It will be seen that the fuel after leav
ing the tube 5 is caused to travel away from the
nozzle end of the burner .and is de?ected towards
the nozzle end of the burner and is interrupted
in its ?ow towards the nozzle end of the burner so 45
that it will be thoroughly broken into small par
ticles. The inner sleeve being driven by the ro
tor I I relative to the core and the ribs thereof will
prevent the fuel from adhering to the walls of the
While I have described this burner as having a
rotor for the purpose of driving an inner sleeve,
the burner may be constructed as shown in Fig
ure 3, wherein all of the parts are stationary,
and consists of a tubular body 22 similar in shape 55
to the body I at the nozzle end while the opposite
carried by the head and extending axially with
end is in the form of a head 23 having a steam
conduit 24 and a fuel conduit 25. Extending into
in the body and having an outer end terminating
between said head and nozzle, said outer end
the fuel conduit 25 is a fuel conducting tube 26
and the latter is arranged axially of the body 22
and has secured thereto a spreader or de?ector
21 arranged at the nozzle end of the body. The
spreader is formed with a series of stepped an
nular faces 28 forming between itself and a core
fashioned with radially extending discharge ports
air under pressure introduced into said body
through said air inlet, a sleeve forming a liquid
10 29 mounted on the tube 26 a mixing chamber 30.
The core 29 is constructed similar to the core l5
fuel chamber having a conical shaped inner sec
tion secured to said rotor for rotation therewith
for discharging liquid fuel under pressure from a
said tube, a rotor rotatably mounted on said tube
adjacent said head and adapted for rotation by '
de?ning between itself and the tube 26 a fuel
and an outer section spaced from said body to
passage 3!. Surrounding the core and mounted
on the tube 26 is an inner sleeve 32. The inner
sleeve is spaced from the ribs of the core and
forms a fuel passage 33 communicating with the
fuel passage 3|. The fuel escapes from the tube
26 to the fuel passage 3| through ports 34. The
provide a restricted air passage between itself
and said body, the outer end of said outer section
terminating beyond said nozzle, a de?ector ?xed
to said tube within said conical shaped section
of the sleeve and fashioned with a conical shaped
inner end of the sleeve 32 is closed and abuts the
510 head 23 of the body 22 with a tight ?t. The in
ner sleeve is slightly spaced from the body 22 to
form an air passage 35 communicating with the
conduit 24 and with the mixing chamber 30. A
portion of the inner sleeve is of an increased
thickness and has formed therein a spiral groove
31. The steam under pressure escaping from the
conduit 24 travels through the passage 35 to the
recess in the outer face thereof, a core spaced
from said sleeve to form a liquid fuel discharge
passage through said chamber and having a re
cessed inner end section ?xed to and embracing
the outer end of said tube to form a longitudinally
extending liquid fuel passage therebetween Where
by to reverse a ?ow of liquid discharged from
said tube through said ports, said core having
circumferentially extending ribs spaced from the
mixing chamber 38 and is given a swirling action
by ‘the spiral groove 3?. The fuel traveling
through the passages 3| and 33 is thoroughly bro
ken up into small particles and when leaving
the passage 33 it enters the chamber 30 and be-
inner periphery of said sleeve, said inner end
of the core extending within the recess of said
deflector and spaced from the latter to form up
wardly and outwardly extending liquid fuel pas- ;
sages therebetween adapted to reverse the flow
of liquid fuel from said longitudinally extending
comes mixed with the steam. The steam and fuel
passage and direct the same against the inner’
in the mixing chamber 36 striking against the
35 spreader or the stepped faces thereof becomes
thoroughly mixed and escapes at the nozzle end
of the body 22 in a thoroughly mixed and vapor
ized condition.
Having described the invention, I claim:
A burner comprising a body having a head
formed with an air inlet at one end and provided
with an opening at the opposite end acting as
an outlet nozzle, a liquid fuel conducting tube’
periphery of said sleeve whereby the rotation of
the latter serves to urge the liquid fuel in flowing
condition thereagainst to form a ?lm thereover,
said ribs coacting with said sleeve to maintain a
predetermined depth to said ?lm on said sleeve
for mixture with air from said restricted pas
sage at the outer end of said sleeve and to pre
vent ?ames from entering ‘the fuel chamber and
said liquid fuel passages.
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