US3623664A - Rotary-type oil burner - Google Patents

Rotary-type oil burner Download PDF

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Publication number
US3623664A
US3623664A US6996A US3623664DA US3623664A US 3623664 A US3623664 A US 3623664A US 6996 A US6996 A US 6996A US 3623664D A US3623664D A US 3623664DA US 3623664 A US3623664 A US 3623664A
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United States
Prior art keywords
plate
oil
air
rotary
burner
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
US6996A
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English (en)
Inventor
Shoichi Tsuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
Ishikawajima Harima Heavy Industries Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd
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Publication of US3623664A publication Critical patent/US3623664A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23D11/04—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying action being obtained by centrifugal action

Definitions

  • the present invention relates to generally an oil burner and more particularly a rotary-type oil burner.
  • the heavy liquid fuels In order to burn the heavy liquid fuels, they are generally atomized into finely divided particles with a particle size ranging from tens to hundreds microns and mixed with the air.
  • the mechanical atomizers or pressure atomizers, auxiliary-fluid atomizers and rotary-cup atomizers are generally used. All of these atomizers are designed without any special attention to the fact that the atomized liquid fuels may be uniformly mixed with the air.
  • the air In the conventional liquid fuel burners, the air is swirled or made to flow at high speed for the better mixing with the atomized fuels, but they are not sufficient. It is very important to mix the atomized liquid fuels with the air in order to attain the complete combustion of the liquid fuels. It is a well-known fact that the more uniformly the air and the atomized liquid fuels are mixed with each other, the more complete the combustion with less smoke and soot and with less excess air.
  • the primary object of the present invention is to provide a rotarytype oil burner which can atomize the liquid fuels into uniform particle sizes and mix uniformly with the air.
  • the present invention provides a rotary-type oil burner characterized in that a rotary plate having a plurality of teeth formed along the outer periphery thereof is rotatably disposed longitudinally of a burner ring or the like in such a manner that a plurality of rotary passages may be defined between the inner surface of said oil burner ring or the like and each of the teeth profiles; a fuel oil supply pipe is provided for supplying fuel oil in such a manner that said fuel oil may be expanded over said rotary plate in the form of a thin film; and air supply pipe is provided for passing the air through said passages at high speed; whereby said air passing through said passages at high speed can contact with said thin film of said fuel oil along the tooth profile edge of said rotary plate.
  • the liquid fuel may be atomized and unifonnly mixed with the air.
  • the uniform mixing of the atomized fuel oil with the air can be further ensured by suitably selecting the profile of the teeth of the rotary plate.
  • the rotary-type oil burner in accordance with the present invention is simple in construction and inexpensive to manufacture.
  • FIG. 1 is a longitudinal sectional view ofone embodiment of a rotary type oil burner in accordance with the present inventron;
  • FIG. 2 is a front view thereof only illustrating the center portion for explanation of the atomization of fuel oil and the mixing with the air;
  • FIG. 3 is a fragmentary plan view of a rotary plate thereof for explanation of obtaining the tooth profile for uniform mixmg.
  • a burner ring 6 having a suitable diameter is extended from the front wall of a wind box 4 to which is connected one end of a duct 5 whose the other end is coupled to a blower (not shown).
  • the wind box 4 is disposed at the entrance or inlet of a primary combustion chamber 8 which is encircled with a burner tile 7 in such a manner that the burner ring 6 is placed upon the burner tile 7.
  • a hollow rotary shaft 2 is extended along the longitudinal axis of the wind box 4 and has a plurality of equiangularly spaced-apart fuel-ejecting holes 10 formed along a circle upon the outer peripheral surface of the front portion of the rotary shaft 2 and a plurality of equiangularly spaced-apart fuel inlets 11 formed in the similar manner as the ejection holes 10, at the rear portion of the rotary shaft 2.
  • the rotary shaft 2 is journaled by a bearing 3 which in turn is supported by the burner ring 6 through ribs 9 and a bearing 3' which in turn is securely fixed to the wind box 4.
  • the fuel inlets 11 are communicated with a fuel supply pipe 12 extending from a fuel oil pump (not shown) through a sealing member 13 which sealingly surrounds the fuel oil inlets 11.
  • a pulley 14 is carried at the rear end of the rotary shaft 2 and at the front end thereof is rotatably fixed a rotary plate 1 having a plurality of teeth.
  • the rotary flow paths 18 are defined between the edges of the teeth of the rotary plate 1 and the inner surface of the burner ring 6.
  • a motor 16 drives a belt wrapped over the pulley 14 of the rotary shaft 2 and a pulley 15 carried by the motor shaft so that the hollow rotary shaft 2 and the rotary plate 1 are rotated.
  • the fuel oil flowing through the rotary shaft 2 is ejected through the ejection holes 10 into a thin film 19 extending over the inner surface of the rotary plate 1.
  • the fuel oil is forced into the hollow rotary shaft 2 from the fuel oil supply pipe 12 by the fuel oil pump through the sealing member 13 and the inlets 11.
  • the fuel oil is ejected from the ejection holes 10 which are so formed as to contact with the rotary plate 1.
  • the ejection holes 10 are angularly formed so that the fuel oil ejected from the holes 10 is made in contact with the rotary plate 1, the ejected fuel oil is extended over the inner surface of the rotary plate 1 as thin film 19 by the frictional force and the centrifugal force, and finally reaches the edge 17 of the rotary plate 1.
  • the fuel oil film formed upon the rotary plate 1 is exceedingly thin, the direction of the flow of the thin film is radial before it reaches the edge of the rotary plate 1.
  • the air is supplied into the wind box 4 through the duct 5 from the blower (not shown).
  • the compressed air is ejected through the paths 18 defined by the inner surface of the burner ring 6 and the edge 17 of the rotary plate 1, into the primary combustion chamber 8.
  • the thin fuel oil film at the edge of the rotary plate 1 contacts with the high speed air flow continuously directed toward the primary combustion chamber 8 through the rotary paths 18 so that the fuel oil thin film 19 is separated from the rotary plate 1 and is atomized into finely divided particles which are continuously mixed with the air.
  • the atomized fuel oil By suitable selection of the plate, the atomized fuel oil the air flow.
  • the plate 1 for uniform mixing profile of the tooth of the rotary particles may be easily mixed with profile of the tooth of the rotary will be analyzed when the air flow velocity through the rotary paths 18 is uniform.
  • the maximum radius of the rotary plate 1 is designated by r the root radius, by r,; the distance between the center of the rotary plate 1 and the point P at the flank by r; the center of the rotary plate 1, 0, the angle between OA and OP, by 0; a small increment of the angle 0, by d6; the angle between OA and OB, by 0 and an increment along the circle with the radius r, corresponding to the angle increment d6, by ds
  • the thin fuel oil film flowing in the radial direction in the angle d6 reaches the edge PQ after passing through d.r,.
  • the equation (I) must be satisfied in order that the atomized particles are uniformly mixed in the air flow.
  • the rotary paths 18 have been described as being defined between the edge of the rotary plate 1 and the burner ring 6, but it will be understood that the rotary paths may be defined between the edge 17 of the rotary plate 1 and the burner tile 7 without the use of the rotary plate 6. lt will be understood that other variations and modifications can be efiected without departing the true spirit of the present invention as described hereinabove and as defined in the appended claims.
  • a rotary-type oil burner comprising a substantially flat rotary plate having a plurality of teeth formed along the outer edge thereof, burner ring means coaxially surrounding said plate whereby a plurality of passages are formed between said ring means and the teeth on the edge of said plate, means for rotating said plate whereby said passages rotate about the axis of said plate, means for applying fuel oil centrally to one side of said plate whereby a substantially uniform thin film of oil flows radially outwardly on said one side of said plate upon rotation of said plate, and means for passing air through said passages, whereby said air contacts said oil film and said edges of said plate and said oil is thereby atomized and mixed with said air.
  • a rotary-ype oil burner comprising a substantially flat rotary plate, burner ring means coaxially surrounding said plate, said plate having a plurality of teeth formed around its periphery whereby a plurality of passages are formed between said teeth and said ring means, means for rotating said plate whereby said passages rotate about the axis of said plate, means for directing a flow of fuel oil centrally on one side of said plate whereby a substantially uniform thin film of oil flows radially outwardly on said one side upon rotation of said plate,
  • said means for rotating said plate comprises a rotary shaft extending through said air chamber and connected centrally to said one side of said plate, and means external of said chamber for rotating said shaft.
  • r is the distance between the center of said plate and a point on the flank of a tooth
  • r is the maximum radius of said plate at the apex of said tooth
  • r is the root radius of said plate at the bottom of said tooth
  • C is a constant
  • 6 is the angle between the apex and root of said tooth
  • 0 is the angle between the root of said tooth and the point at which r is defined UNITED STAIES PATENT oFmcE (IERTIFICATE 0F CQRRECTION Patent :5 523,664 Dated November '30, L971 Inventor(s) ShOiChi TSUJI It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
US6996A 1969-02-05 1970-01-30 Rotary-type oil burner Expired - Lifetime US3623664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44008569A JPS493088B1 (enrdf_load_stackoverflow) 1969-02-05 1969-02-05

Publications (1)

Publication Number Publication Date
US3623664A true US3623664A (en) 1971-11-30

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ID=11696672

Family Applications (1)

Application Number Title Priority Date Filing Date
US6996A Expired - Lifetime US3623664A (en) 1969-02-05 1970-01-30 Rotary-type oil burner

Country Status (5)

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US (1) US3623664A (enrdf_load_stackoverflow)
JP (1) JPS493088B1 (enrdf_load_stackoverflow)
CH (1) CH500431A (enrdf_load_stackoverflow)
FR (1) FR2032770A5 (enrdf_load_stackoverflow)
GB (1) GB1236545A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2203449C1 (ru) * 2002-05-08 2003-04-27 Максимов Анатолий Иванович Ротационная горелка для жидкого топлива
RU2240474C2 (ru) * 2002-12-16 2004-11-20 ООО "АНХ-инжиниринг" Центробежная форсунка
RU2435650C1 (ru) * 2010-05-11 2011-12-10 Государственное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" Распылитель жидкости
RU2582422C1 (ru) * 2014-12-01 2016-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" (ФГБОУВПО "ЯГТУ") Распылитель жидкости

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397775A (en) * 1889-02-12 Lawn-sprinkler
US540864A (en) * 1895-06-11 Water distributer or sprinkler
US1029818A (en) * 1911-06-17 1912-06-18 William C H Noble Oil-burning apparatus.
US1506226A (en) * 1919-12-08 1924-08-26 Samuel M Dick Centrifugal atomizer
US1627690A (en) * 1924-03-10 1927-05-10 Frederick S Denison Centrifugal fluid-fuel burner
US1674631A (en) * 1926-10-28 1928-06-26 Benniger John Oil burner
US2560866A (en) * 1944-06-06 1951-07-17 Shell Dev Rotating atomizing cup burner
CH325444A (de) * 1953-08-07 1957-11-15 Joachim Barr Peter Verfahren und Vorrichtung zur Zerstäubung von Flüssigkeiten
US3508852A (en) * 1967-01-04 1970-04-28 Avinoam Hourwitz Oil burner

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US397775A (en) * 1889-02-12 Lawn-sprinkler
US540864A (en) * 1895-06-11 Water distributer or sprinkler
US1029818A (en) * 1911-06-17 1912-06-18 William C H Noble Oil-burning apparatus.
US1506226A (en) * 1919-12-08 1924-08-26 Samuel M Dick Centrifugal atomizer
US1627690A (en) * 1924-03-10 1927-05-10 Frederick S Denison Centrifugal fluid-fuel burner
US1674631A (en) * 1926-10-28 1928-06-26 Benniger John Oil burner
US2560866A (en) * 1944-06-06 1951-07-17 Shell Dev Rotating atomizing cup burner
CH325444A (de) * 1953-08-07 1957-11-15 Joachim Barr Peter Verfahren und Vorrichtung zur Zerstäubung von Flüssigkeiten
US3508852A (en) * 1967-01-04 1970-04-28 Avinoam Hourwitz Oil burner

Also Published As

Publication number Publication date
GB1236545A (en) 1971-06-23
FR2032770A5 (enrdf_load_stackoverflow) 1970-11-27
JPS493088B1 (enrdf_load_stackoverflow) 1974-01-24
DE2005261A1 (de) 1970-08-13
DE2005261B2 (de) 1973-01-11
CH500431A (de) 1970-12-15

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