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WO1996034230A1 - Bruleur a mazout a pulverisation pour faibles puissances - Google Patents

Bruleur a mazout a pulverisation pour faibles puissances Download PDF

Info

Publication number
WO1996034230A1
WO1996034230A1 PCT/CH1996/000066 CH9600066W WO9634230A1 WO 1996034230 A1 WO1996034230 A1 WO 1996034230A1 CH 9600066 W CH9600066 W CH 9600066W WO 9634230 A1 WO9634230 A1 WO 9634230A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
evaporation
combustion chamber
chamber
heating
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.)
Ceased
Application number
PCT/CH1996/000066
Other languages
German (de)
English (en)
Inventor
Urs LÖPFE
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.)
Lopfe AG
Loepfe AG Gebrueder
Original Assignee
Lopfe AG
Loepfe AG Gebrueder
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 Lopfe AG, Loepfe AG Gebrueder filed Critical Lopfe AG
Publication of WO1996034230A1 publication Critical patent/WO1996034230A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F23D11/36—Details
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F23D11/445—Vaporising devices incorporated with burners heated by the main burner flame the flame and the vaporiser not coming into direct contact
    • 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
    • F23D11/36—Details
    • F23D11/42—Starting devices
    • 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
    • F23K5/22—Vaporising devices

Definitions

  • the invention relates to an oil vapor burner for small outputs according to the preamble of claim 1.
  • Firing systems are usually used to generate heat that is used directly or indirectly.
  • Heating oil which is burned with the help of oil burners, is often used as fuel.
  • the heat generated is used, for example, for space heating, hot water preparation, for cooking or for industrial processes.
  • the oil burner has to bring the heating oil into a highly flammable condition by atomizing and distributing it. This is the only way to ensure that the heating oil burns out as completely as possible.
  • the oil burner has the task of mixing the heating oil with the combustion air.
  • the fine distribution of the heating oil is achieved with atomizing nozzles. It is not possible to dimension oil burners of this type so small that they are suitable for outputs of less than 10 kilowatts. If the heating power is low, the nozzle diameters become very small and then clog up continuously because the heating oil contains impurities and the combustion air contains parts which are larger than the nozzle diameter.
  • An annular flame holder which is arranged in the front region of the combustion chamber, is used to generate the recirculation of hot combustion gases.
  • the cup-shaped rotor is arranged concentrically to the flame holder at a radial distance.
  • the fuel evaporation takes place on the inner surface of the rotor shell in the heat exchange with the recirculating combustion gases.
  • the flame holder has the function of a ring neck ejector which sucks a mixture of recirculating combustion gases and vaporous heating oil from the cup-shaped rotor into the flame core by means of combustion air.
  • the combustion air flows through an air duct into the combustion chamber.
  • An oil evaporation burner according to the preamble of claim 1 is known from patent specification EP 0 405 481.
  • the evaporation chamber and combustion chamber are arranged horizontally one behind the other.
  • the liquid, e.g. Heating oil, is broken up mechanically and only partially evaporated.
  • the object of the invention is to create an oil evaporation burner for small outputs, which is of simpler construction than the known oil evaporation burner and works more effectively than it.
  • the proposed oil evaporation burner is divided into a combustion chamber and an evaporation chamber arranged above the combustion chamber.
  • the heating oil is introduced into the evaporation chamber from above. There it is then mixed with hot air and thereby evaporates.
  • the heating oil vapor falls from the evaporation chamber down into the combustion chamber. It burns down on the outside of the curved, lattice-like combustion chamber floor.
  • the air is heated electrically when the combustion process starts. During operation, the heating oil evaporates due to the heat of the flames.
  • FIG. 1 shows a section through the proposed oil evaporation burner.
  • the evaporation chamber 2 in the proposed oil evaporation burner 1 is arranged directly above the combustion chamber 3. It is divided into a cylindrical, broad, lower section 4, a central, frustoconical section 5 and a likewise cylindrical, narrow, upper section 6.
  • a feed passage 7 opens at its upper end face. The longitudinal axis of this feed passage 7 is in relation to the axis of symmetry
  • the feed passage 7 preferably has a circular cross section. His jacket 24 then has the shape of a round tube.
  • the middle section 5 and the lower section 4 of the evaporation chamber 2 are separated from one another by a perforated, circular distribution plate 12. Below this perforated distribution plate 12 there is an expanded metal grating 14. Distribution plate 12 and expanded metal grille 14 represent distribution devices for the oil vapor / combustion air mixture.
  • the expanded metal grid 14 is held by a ring 15 with a U-shaped cross section.
  • the ring 15 is attached to the inside of the jacket 16 of the evaporation chamber 2.
  • the combustion chamber 3 is divided into an upper cylindrical section 17 and a lower section 18, which preferably has the shape of a hemisphere or a spherical section.
  • the upper section 17 is covered on its upper side with a perforated, circular distribution plate 13.
  • Distribution plate 13 and chrome steel bowl 20 provide distribution bodies for the combustion according to.
  • a curved grid 22 Located above the curved jacket of the lower combustion chamber section 18 there is also a curved grid 22. It also has the shape of a hemisphere or a spherical section. Its inner surface serves for the fine distribution of the oil vapor combustion mixture.
  • the jacket 21 of the combustion chamber 3 serves as a burning surface for the oil vapor combustion mixture.
  • both the upper section 17 and the lower section 18 of the combustion chamber 3 are hollow-cylindrical (not shown).
  • the perforated chrome steel bowl 20 is also cylindrical and has a circular, flat bottom.
  • the grid 22 is also flat and circular. The burning surface for the oil vapor combustion mixture is formed by the flat bottom of the combustion chamber 3.
  • the jacket 21 of the combustion chamber 3, the jacket 16 of the evaporation chamber 2 and the jacket 24 of the feed passage 7 are preferably seamlessly connected to one another.
  • the jacket 21 of the combustion chamber 3 and the jacket 16 of the evaporation chamber 2 are fastened to one another with the aid of a flange connection 23.
  • an annular seal 19 ensures that the connection is airtight. This is important, since the ingress of external air causes an increase in carbon dioxide emissions.
  • the proposed oil evaporation burner 1 works in the following way:
  • the combustion air is blown through the inlet opening 9 into the feed passage 7 with the aid of a fan (not shown).
  • the air flow passes in the feed passage 7 and is heated by the electrical heating element 10.
  • the heating element 10 is regulated to a constant evaporation temperature of the heating oil.
  • the heating oil is fed through the oil line 11 into the feed passage 7 at a constant rate. A mass throughput of 0.5 liters of heating oil per hour is necessary for an output of 5 kW.
  • the heating oil is preferably wheel pump promoted (not shown). In order to be able to achieve a regular combustion process, it is important that it flows continuously.
  • the heated combustion air strikes the heating oil in the lowest end section of the feed passage 7 and brings it to evaporation in the evaporation chamber 2.
  • the oil vapor then falls down in the evaporation chamber 2. It traverses the upper distribution plate 12, the expanded metal grid 14 and the lower distribution plate 13 and is thereby distributed regularly over the cross-sectional area of the combustion chamber 3. After passing through the perforated chrome steel bowl 20, the oil vapor is ignited with an ignition spark. The combustion of the oil vapor takes place on the outer surface of the grid-like combustion chamber antel ⁇ 21. After the operating temperature has been reached, the heating oil is evaporated by the upward radiant heat of the combustion flames.
  • the heating oil vapor falls from top to bottom in the proposed oil evaporation burner 1, it can also be referred to as a fall burner.
  • the proposed oil evaporation burner 1 has significant advantages compared to known oil evaporation burners: a simple construction is particularly advantageous. There are no moving parts susceptible to faults either in the evaporation chamber 2 or in the combustion chamber 3.
  • the proposed oil evaporation burner 1 Since the proposed oil evaporation burner 1 is designed as a fall burner, no residues arise in the evaporation chamber 2 and the combustion chamber 3. The proposed oil evaporation burner 1 is consequently very easy to maintain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)

Abstract

Le brûleur à mazout à pulvérisation (1) objet de l'invention est divisé en une chambre de combustion (3) et en une chambre de vaporisation (2) disposée au-dessus de la chambre de combustion (3). Le mazout est introduit par le haut, dans la chambre de vaporisation (2), où il est alors mélangé à de l'air chaud et se trouve ainsi vaporisé. La vapeur de mazout provenant de la chambre de vaporisation (2) est entraînée vers le bas, dans le foyer (3) et est finement divisée en traversant deux plaques de distribution perforées (12, 13), une grille en métal déployé (14) et une autre grille (22). La vapeur de mazout est brûlée sur l'enveloppe (21) en forme de grille de la chambre de combustion. Au démarrage du processus de combustion, l'air est chauffé électriquement. En régime de fonctionnement, le mazout est vaporisé par la chaleur réfléchie de la flamme.
PCT/CH1996/000066 1995-04-27 1996-02-29 Bruleur a mazout a pulverisation pour faibles puissances Ceased WO1996034230A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1211/95-5 1995-04-27
CH121195 1995-04-27

Publications (1)

Publication Number Publication Date
WO1996034230A1 true WO1996034230A1 (fr) 1996-10-31

Family

ID=4205113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1996/000066 Ceased WO1996034230A1 (fr) 1995-04-27 1996-02-29 Bruleur a mazout a pulverisation pour faibles puissances

Country Status (1)

Country Link
WO (1) WO1996034230A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1481210A (en) * 1973-12-01 1977-07-27 Takagi Sangyo Kk Liquid fuel gasification device
JPS56100216A (en) * 1980-01-14 1981-08-12 Matsushita Electric Ind Co Ltd Liquid fuel combustion device
JPS5864414A (ja) * 1981-10-13 1983-04-16 Matsushita Electric Ind Co Ltd 液体燃料燃焼装置
JPS6073206A (ja) * 1983-09-30 1985-04-25 Sanyo Electric Co Ltd 液体燃料燃焼装置
EP0405481A1 (fr) * 1989-06-29 1991-01-02 Sintermetallwerk Krebsöge Gmbh Dispositif pour pulvériser un fluide
JPH06213414A (ja) * 1993-01-14 1994-08-02 Matsushita Electric Ind Co Ltd 燃焼装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1481210A (en) * 1973-12-01 1977-07-27 Takagi Sangyo Kk Liquid fuel gasification device
JPS56100216A (en) * 1980-01-14 1981-08-12 Matsushita Electric Ind Co Ltd Liquid fuel combustion device
JPS5864414A (ja) * 1981-10-13 1983-04-16 Matsushita Electric Ind Co Ltd 液体燃料燃焼装置
JPS6073206A (ja) * 1983-09-30 1985-04-25 Sanyo Electric Co Ltd 液体燃料燃焼装置
EP0405481A1 (fr) * 1989-06-29 1991-01-02 Sintermetallwerk Krebsöge Gmbh Dispositif pour pulvériser un fluide
JPH06213414A (ja) * 1993-01-14 1994-08-02 Matsushita Electric Ind Co Ltd 燃焼装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 174 (M - 096) 10 November 1981 (1981-11-10) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 157 (M - 227) 9 July 1958 (1958-07-09) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 215 (M - 409) 3 September 1985 (1985-09-03) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 583 (M - 1699) 8 November 1994 (1994-11-08) *

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