US3306336A - Pressurized fluid fuel burner - Google Patents

Pressurized fluid fuel burner Download PDF

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Publication number
US3306336A
US3306336A US450582A US45058265A US3306336A US 3306336 A US3306336 A US 3306336A US 450582 A US450582 A US 450582A US 45058265 A US45058265 A US 45058265A US 3306336 A US3306336 A US 3306336A
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United States
Prior art keywords
air
blower
rotor
outlet
blast tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US450582A
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English (en)
Inventor
Zenkner Kurt
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Individual
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Individual
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Publication date
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Publication of US3306336A publication Critical patent/US3306336A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/001—Spraying nozzle combined with forced draft fan in one unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/142—Fuel pumps
    • F23K5/145—Fuel pumps combined with fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/02—Combustion apparatus using liquid fuel
    • F23C2700/023—Combustion apparatus using liquid fuel without pre-vaporising means

Definitions

  • this invention is directed to an oil or gas burner wherein the oil is sprayed or the gas is blown at high pressure through a nozzle into a mixing chamber through which air flows, is atomized or diffused during this operation, and intimately mixes with the air in the mixing chamber, and is ignited at the end of the mixing chamber.
  • FIGURE 1 shows a sectional View of an oil burner including an electric motor, two transverse blowers, an oil pump, and a mixing chamber in axial alignment.
  • FIGURE 2 shows a sectional view of the oil burner of this invention with two transverse blower portions separated by a central chamber.
  • FIGURE 3 shows a sectional view of the oil burner of this invention with the oil pump being axially disposed between two transverse blowers.
  • FIGURE 4 shows a sectional view of the oil burner of this invention with a transverse blower having a central recess and an adjustable cylinder positioned therein.
  • FIGURE 5 shows a sectional view of an oil burner of this invention wherein the two transverse blowers are mountingly supported to a connecting shaft disposed therebetween.
  • blowers which usually constitute a single unitary assembly with the oil pump motor, the control system, and the burner proper.
  • the flame In the burner, the flame is located in either a straight or a curved combustion chamber which is surrounded by heat exchangers.
  • the heat generated by the flame may be used to heat air or water.
  • the more compact arrange ments of the heat exchange surfaces allow smaller furnace structures, but the more compact arrangements also provide flow paths for the hot gases which are twisted and circuitous. Hence the pressure and flow rate of the combustion gases decreases rapidly in the combustion chamber.
  • transverse air blower to provide the requisite flow pressure to the combustion air.
  • a transverse air blower is adapted to produce more pressure, relative to the rotational or circumferential speed of the rotor, than an axial blower or a radial blower.
  • the transverse air blower assembly increases the air pressure and flow velocity through at least two blower stages. This may be effected either with separate blowers or with a rotor which is subdivided into several chambers by inter mediate disks or dividers extending radially from the rotor axis.
  • FIGURE 1 shows one embodiment of the present invention with an oil burner including two transverse air blower stages in which the motor, the blowers, the oil pump, and the mixing chamber with the oil injector are axially aligned.
  • a central disk or partition extending radially from the rotor axis separates the two rotor stages.
  • all of the other angular relationships between the axis of the burner proper and the axis of the blower subcombination may be employed as well.
  • the axis of the burner and the axis of the blower can be positioned at right angles with respect to each other.
  • the same blower arrangement may also be used in gas burners according to the present invention.
  • the oil supply is replaced by a gas supply means, and the oil pump is omitted.
  • the air enters through an inlet terminal orifice 7 and is directed through the first stage 1 of the transverse air blower rotor.
  • the deflecting channel 8 guides the air being discharged from the outlet of the first stage 1 into the inlet of the second stage 2.
  • the deflecting channel 9 is a terminal outlet orifice and directs the air being discharged from the outlet of the second stage 2 into the blast tube 5. If there is a third stage, a second deflecting channel 8 is put in place of part 9.
  • the flame barrier 10, the oil supply means 11, and the ignition electrodes 12 are contained in the blast tube 5.
  • the inner radial portion 13 nearest to the rotor axis is expanded in a bulge-like manner toward the opposite wall of the deflecting channel.
  • the blower rotor may be mounted on either the motor shaft or the pump shaft.
  • the deflecting channel in the apparatus of this invention has an inner radius projecting toward the opposite wall of the channel in a bulge-like manner. This provides a larger radius of curvature, smaller centrifugal forces, and decreases danger that the flow of air would create a low pressure zone with the resulting eddies along the inner wall. It is also possible to introduce a blind chamber or spacing chamber between two stages about which the air must then be deflected. This permits the use of a deflecting channel with a larger inner radius.
  • FIGURE 2 shows a variation of the apparatus of this invention differing from that shown in FIGURE 1 in that a center chamber 14 is provided which spaces apart the end chambers 15 and 16. The air is directed between these stages by deflecting channel 17.
  • the disks on the ends of the blower chambers as well as the intermediate blower disks may protrude beyond the blower chambers with the outer edges beyond the periphery of the blower blades. This protruding portion can project or be received into an annular groove in the housing, which combination provides a labyrinth packing 18.
  • the air blown from the outlet of one blower chamber is guided by deflecting channel 17 to the inlet of the next chamber.
  • FIGURE 3 illustrates an embodiment in which the individual blower stages 19 and 20 are disposed separate from each other and wherein the oil pump 21 is positioned between the stages.
  • the individual blower rotors can be mounted on the rotor shaft of the oil pump 21. Air from the outlet of stage 1 is directed to the inlet of stage 2 by means of deflecting channel 22.
  • the oil pump can be disposed between the two stages in accordance with this invention.
  • FIGURE 4 shows another two-stage embodiment of this invention in which the motor 25 is disposed between stage 26 and stage 27.
  • Stage 26 is provided with a central axial space or recess 28 for receipt of a control cylinder 29.
  • the cylinder may be laterally inserted into the recess 28 by means of adjusting element 30.
  • This arrangement makes possible a linear regulation of the How rate of the air through the stage. Air from the outlet of stage 26 is directed around area 33 by the deflecting channel 32 to the inlet of stage 27.
  • the housing enclosing the motor 25 is provided with passageways 31 which permit air circulation for cooling the motor. By this arrangement, the space between the rotors is occupied by the motor rather than the oil pump as shown in FIG- URE 3.
  • FIGURE shows an arrangement of this invention wherein the separate blower stages 35 and 36 are spaced apart and separated by a coupling shaft 37.
  • the coupling shaft can be rigidly attached to the blower rotors and can serve to support the rotors as a mounting.
  • An oil, gas, or other fluid fuel burner with air admixing blower means comprising a motor having a rotating drive shaft; a transverse-flow blower with air inlet and outlet terminal orifices; a blast tube connected to the outlet terminal orifice; a fuel nozzle within the open end of the blast tube; the blower having at least two blower stages; each of said at least two stages including a rotor in axial alignment with and drivingly connected to said drive shaft; the first of the rotors having a peripheral air outlet orifice, the successive rotor having a peripheral air inlet orifice adjoining the outlet orifice of the previous rotor; one air deflecting housing of the air outlet and inlet orifices attached from the outside for every pair of rotors; a segment of a ring structure of a bulbous cross section of an aerodynamic shape of a large radius of curvature in the flow of air between every pair of rotors to avoid air turbulence, said ring structure interposed between the air
  • each two rotors spaced from each other in their axial alignment to enlarge the bulbous cross section of said ring and to increase the radius of curvature of the air flow.
  • a burner as in claim 2 said motor mounted in the space between two spaced rotors, one rotor mounted on each side thereof.
  • a burner as in claim 2 further comprising an oil pump positioned in the space between two spaced rotors, the fuel pump in axial alignment with said motor, the motor shaft drivingly connected with said fuel pump.
  • a burner as in claim 2 further comprising spacing structures positioned between pairs of spaced rotors.
  • a burner as in claim 1 at least one blower stage having a central axial space; a control cylinder mounted therein slidably coaxially with the motor shaft and means for adjusting the distance of sliding thereof.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US450582A 1964-04-27 1965-04-26 Pressurized fluid fuel burner Expired - Lifetime US3306336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ0010798 1964-04-27

Publications (1)

Publication Number Publication Date
US3306336A true US3306336A (en) 1967-02-28

Family

ID=7621551

Family Applications (1)

Application Number Title Priority Date Filing Date
US450582A Expired - Lifetime US3306336A (en) 1964-04-27 1965-04-26 Pressurized fluid fuel burner

Country Status (5)

Country Link
US (1) US3306336A (de)
AT (1) AT258527B (de)
BE (1) BE663079A (de)
CH (1) CH460224A (de)
NL (1) NL6505292A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470820A (en) * 1968-05-02 1969-10-07 Gen Motors Corp Method and apparatus for mechanicalfluid power conversion
US3522994A (en) * 1967-05-18 1970-08-04 Kurt Zenkner Vacuum cleaner
US3918885A (en) * 1972-03-15 1975-11-11 Bjorn Olov Magnus Palm Apparatus for reducing the dynamic pressure of combustion air at the burner head of an oil burning appliance

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379179A (en) * 1917-08-28 1921-05-24 Good Inventions Co Inclosed combustion apparatus
US1846379A (en) * 1929-03-29 1932-02-23 American Blower Corp Apparatus and method of controlling fans
US1855339A (en) * 1928-04-17 1932-04-26 Frank H Cornelius Liquid fuel burner
US2390509A (en) * 1940-08-03 1945-12-11 Gen Oil Heating Corp Oil-burner construction
US2753929A (en) * 1951-12-27 1956-07-10 Silent Flame Mfg Co Inc Oil burner
US2814254A (en) * 1954-04-16 1957-11-26 David P Litzenberg Motor driven pumps
US2965284A (en) * 1955-11-24 1960-12-20 Benninger Ag Maschf Turbo-machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379179A (en) * 1917-08-28 1921-05-24 Good Inventions Co Inclosed combustion apparatus
US1855339A (en) * 1928-04-17 1932-04-26 Frank H Cornelius Liquid fuel burner
US1846379A (en) * 1929-03-29 1932-02-23 American Blower Corp Apparatus and method of controlling fans
US2390509A (en) * 1940-08-03 1945-12-11 Gen Oil Heating Corp Oil-burner construction
US2753929A (en) * 1951-12-27 1956-07-10 Silent Flame Mfg Co Inc Oil burner
US2814254A (en) * 1954-04-16 1957-11-26 David P Litzenberg Motor driven pumps
US2965284A (en) * 1955-11-24 1960-12-20 Benninger Ag Maschf Turbo-machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522994A (en) * 1967-05-18 1970-08-04 Kurt Zenkner Vacuum cleaner
US3470820A (en) * 1968-05-02 1969-10-07 Gen Motors Corp Method and apparatus for mechanicalfluid power conversion
US3918885A (en) * 1972-03-15 1975-11-11 Bjorn Olov Magnus Palm Apparatus for reducing the dynamic pressure of combustion air at the burner head of an oil burning appliance

Also Published As

Publication number Publication date
BE663079A (de) 1965-08-17
NL6505292A (de) 1965-10-28
CH460224A (de) 1968-07-31
DE1451450B2 (de) 1972-12-07
AT258527B (de) 1967-11-27
DE1451450A1 (de) 1969-05-14

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