EP0189445A1 - Bruleur a pot pour combustible liquide. - Google Patents

Bruleur a pot pour combustible liquide.

Info

Publication number
EP0189445A1
EP0189445A1 EP85903266A EP85903266A EP0189445A1 EP 0189445 A1 EP0189445 A1 EP 0189445A1 EP 85903266 A EP85903266 A EP 85903266A EP 85903266 A EP85903266 A EP 85903266A EP 0189445 A1 EP0189445 A1 EP 0189445A1
Authority
EP
European Patent Office
Prior art keywords
basket
room
fuel
level
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.)
Granted
Application number
EP85903266A
Other languages
German (de)
English (en)
Other versions
EP0189445B1 (fr
Inventor
Willem Godijn
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.)
Electrolux SARL
Original Assignee
Electrolux SARL
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 Electrolux SARL filed Critical Electrolux SARL
Publication of EP0189445A1 publication Critical patent/EP0189445A1/fr
Application granted granted Critical
Publication of EP0189445B1 publication Critical patent/EP0189445B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/02—Stoves or ranges for liquid fuels with evaporation burners, e.g. dish type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/02—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
    • F23D5/04—Pot-type evaporators, i.e. using a partially-enclosed combustion space

Definitions

  • the invention relates to a burner for liquid fuel of the type specified in the preamble of claim 1.
  • Such a burner is e.g. B. known from European Patent No. 27298.
  • a row of holes is arranged at the outlet for the combustion gases, which cause secondary air to flow radially to the center axis of the combustion chamber for the final combustion of the fuel which has been evaporated in the combustion chamber and is on the way to the outlet.
  • the ceiling wall in use is located at a considerable distance from the outlet, and it cannot be prevented that evaporated fuel flows through the outlet into the center thereof.
  • the aim of the invention is to produce a burner in which fuel is burned as completely as possible.
  • the passage in which the fuel is hit by the secondary air becomes narrower, which in itself promotes the mixture of fuel and air and thus more complete combustion.
  • the fact that the secondary air hits the surface that forms the transition between the first and the second part of the ceiling wall also creates turbulence in the entire annular outlet for fuel, which annular outlet occurs between the named transition and the edge of the circular one Exits from the combustion chamber. The fuel must pass this turbulence and is mixed there very effectively with the secondary air, which promotes complete combustion.
  • the turbulence takes the form of a ring which rotates about its circular axis.
  • the fuel that has to pass through this rotating ring is mixed very effectively and burned with the secondary air in the ring.
  • the fuel evaporated in use strives to climb straight up under the ceiling wall, where it is deflected radially outwards. This makes it difficult to mix the fuel with primary air, which is supplied through openings distributed along the wall height in the combustion chamber.
  • the outflow of fuel from the insert is distributed over the height of the insert. This is due to the collar on the ring.
  • the primary air flowing against this collar creates turbulence between the ring and the second part of the ceiling wall.
  • This turbulence which promotes the mixture of fuel * and air, forms a resistance for the fuel which wants to pass between the ring and the second part, as a result of which more fuel wants to find its way out of use under the ring.
  • the combustion can be further promoted by the baskets that are specified in claims 4 and 5 and emit the radiant heat to the fuel that flows through the insert.
  • the floor of the combustion chamber must maintain a certain temperature so that the evaporation and combustion of the fuel in the combustion chamber is not adversely affected. According to what is stated in claim 6, the outside of the floor is therefore protected by a screen, which prevents relatively cold combustion air from hitting and cooling the floor directly.
  • FIG. 1 shows a longitudinal section through a burner with a basket-shaped insert in the combustion chamber, which insert is shown partly in section and partly as a view
  • Figure 2 shows a section acc.
  • the marking II-II in Figure 1 and Figure 3 shows an alternative use.
  • 10 denotes a combustion chamber which is surrounded by a circular-cylindrical wall 12, a base 14 and an upper ring 16, which ring 16 has a circular-cylindrical opening 18 which is concentric with the center axis 20 of the wall 12 is arranged.
  • the fuel is supplied to the combustion chamber 10 through a pipe 22 which passes through the floor 14 and opens at a height with the lower edge of the wall 12 into a chamber 24 of the room 10.
  • the chamber 24 is surrounded at the top by a circular, non-perforated disc-shaped part 26, at the sides by a circular-cylindrical basket 28 with openings 30 and at the bottom by a circular plate 32 made of a porous material which sucks up fuel that flows over the edge of the Mouth 34 of the tube 22 is washed away.
  • the chamber 24 is surrounded by two further chambers: an upper, annular chamber 36 and a lower, annular chamber 38.
  • the chamber 36 is at the top by an annular, non-perforated part 40, on the sides of the basket 28 and a basket 42 with openings 44 and surrounded below by a non-perforated ring 46.
  • the chamber 38 is surrounded at the top by the ring 46, on the sides by the basket 28 and a basket 48 with openings 50 and at the bottom by the bottom 14.
  • the part 40 adjoins the part 26 with a rounded, non-perforated part 52, which part has a longitudinal section essentially in the form of a quarter of a circle and adjoins the part 26 essentially at right angles.
  • the ring 46 adjoins the basket 28 with a rounded, non-perforated part 54, which part has the shape of a quarter of a circle in longitudinal section.
  • a fan 56 leads the combustion air to the room 10.
  • the fan supplies the air to a chamber 58 on the outside of the wall 12.
  • the wall is provided with a circular lower row of openings 60, a circular intermediate row of openings 62 and an upper circular row of openings 64.
  • the openings 60, 62 and 64 cause the air to flow in jets in a radial direction against the center axis 20.
  • the openings 50 in the basket 48 and the openings 30 in the basket 28 are arranged in the middle in front of the openings 60, so that the air jets can enter the chamber 24 unhindered from the openings 60.
  • the openings 44 in the basket 42 are arranged in the middle in front of the openings 62, so that the air jets can enter the chamber 36 unhindered from the openings 62.
  • the ring 46 is arranged at such a level that the air jets are directed from the openings 62 against the rounded part 54, which deflects the air jets in an upward direction against the part 40 and then outwards according to FIG. arrow 66, forming a turbulent gas curtain between part 40 and ring 46.
  • This gas curtain 66 extends in a ring around the basket 28. In the gas curtain 66, the gas moves like a ring that rotates about its own circular axis.
  • the air openings 64 are made in the middle of the rounded part 52.
  • the part 26 is mounted substantially level with the opening 18.
  • the rounded part 52 directs the air jets from the opening . 64 in the upward direction and then outwards according to arrow 68, a turbulent gas curtain being formed between part 52 and ring 16.
  • This gas curtain extends in a ring around the part 52.
  • the gas curtain 68 the gas moves like a ring that rotates about its circular axis.
  • the burner partially shown in FIG. 3 differs from that shown in FIG. 1 only in that the basket 42 has been left out. In some cases - with relatively large burners, it has been shown that the combustion without the help of heat radiation from the basket 42 is sufficient. Figure 3 shows such a case.
  • Fuel is supplied through line 22 from a pump, not shown, with a controllable capacity.
  • the pump is driven at maximum capacity.
  • the heat effect is low, the burner is colder and the fuel is not vaporized immediately when it leaves the mouth 34.
  • the fuel is then sucked up through the plate 32, which distributes the fuel over a larger area, which facilitates the evaporation of the fuel. Regardless of the excluded heat effect, any fuel is normally already vaporized before it reaches the periphery of the plate 32.
  • annular channel 70th Channel 70 is between the periphery of plate 32 and a conical central part 72 in the bottom 14, which conical part allows discharge of superfluous fuel even when the burner is strongly inclined, which may be the case when the burner is in a boat.
  • the fuel which is collected by the conical part 72 is passed on through a return line 80, for example to the tank which supplies the burner with fuel.
  • a strip 74 of porous, fuel-absorbing material is attached to the plate 32.
  • the strip 74 has a small volume compared to the plate 32.
  • the strip 74 surrounds the mouth 34 and leads to a location 76 where there is a device for igniting the fuel.
  • a thin sheet 78 is attached between the strip 74 and the plate 32, which prevents the fuel from the strip 74 from being sucked up by the plate 32.
  • the fuel pump When the burner starts, the fuel pump is allowed to work at maximum capacity. When the fuel exits the orifice 34, it is drawn up by the strip 74 and a concentrated flow of fuel is directed to the ignition assembly 76 which ignites the fuel. Without the strip 74, the ignition would take much more time because the entire plate 32 must first be wetted by the fuel before it reaches the ignition device 76 on the periphery of the plate 32.
  • the plate is thermally insulated from the floor 14 by means of three supports 79.
  • the bottom 14 is in turn thermally insulated from the cold air flowing into the chamber 58 by means of a screen 82.
  • the entire insert in the combustion chamber, consisting of the parts 26, 52 and 40, the baskets 28, 42 and 48 and the ring 46, rests on the base 14 and is held centrally on the base by radial arms 84.
  • secondary air means air which is supplied to the combustion chamber for the final combustion of the fuel mixture
  • primary air means the air which is supplied to the combustion chamber for partial combustion of the fuel mixture before the final combustion takes place with secondary air .
  • the insert consisting of the parts 25, 52, 40, 28, 42, 48 and 46 as well as the ring 16 and the bottom 14 are made of one material, e.g. B. steel sheet, which emits heat radiation when heated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Evaporation-Type Combustion Burners (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)

Abstract

Le brûleur à pot comporte une chambre de combustion circulaire cylindrique (10) avec des ouvertures (60, 62, 64) disposées dans la paroi pour l'amenée de l'air de combustion, et avec une entrée débouchant dans le fond (32) pour le combustible liquide. Concentriquement par rapport à la chambre de combustion (10) se trouvent un premier panier (28) d'un diamètre inférieur et un second panier (42) d'un diamètre supérieur à la sortie circulaire (18) pour les gaz de combustion. Alors que le premier panier est fermé par une paroi de couverture supérieure (26), le second panier (42) est fermé vers le haut par une paroi de couverture annulaire se trouvant à un niveau inférieur. Le second panier (42) est divisé, grâce à une bague perforée (46), en une chambre annulaire supérieure (36) et une chambre annulaire inférieure (38). Le fond (14), fermant la chambre de combustion (10) vers le bas, est recouvert d'un écran (82) empêchant l'air de combustion froid s'écoulant dans le brûleur de refroidir le fond (14).
EP85903266A 1984-06-29 1985-06-28 Bruleur a pot pour combustible liquide Expired EP0189445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3424069A DE3424069C2 (de) 1984-06-29 1984-06-29 Topfbrenner für flüssigen Brennstoff
DE3424069 1984-06-29

Publications (2)

Publication Number Publication Date
EP0189445A1 true EP0189445A1 (fr) 1986-08-06
EP0189445B1 EP0189445B1 (fr) 1987-10-14

Family

ID=6239498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85903266A Expired EP0189445B1 (fr) 1984-06-29 1985-06-28 Bruleur a pot pour combustible liquide

Country Status (12)

Country Link
US (1) US4674974A (fr)
EP (1) EP0189445B1 (fr)
JP (1) JPS61502556A (fr)
AU (1) AU569458B2 (fr)
CA (1) CA1246433A (fr)
DE (1) DE3424069C2 (fr)
DK (1) DK270885A (fr)
FI (1) FI852558L (fr)
NO (1) NO157552C (fr)
NZ (1) NZ212549A (fr)
SE (1) SE459989B (fr)
WO (1) WO1986000388A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309115A1 (de) * 1993-03-23 1994-09-29 Viessmann Werke Kg Verfahren zum Betrieb eines Ölverdampfungsbrenners
US7815429B1 (en) * 2008-07-30 2010-10-19 EMSCOInc. Snowball slinger
CA2760677C (fr) * 2009-05-01 2018-07-24 David Henry Harkness Procedes, appareil et articles de fabrication destines a fournir un contenu secondaire en association avec un contenu multimedia de diffusion primaire
DE102011084868C5 (de) * 2011-10-20 2020-07-23 Eberspächer Climate Control Systems GmbH & Co. KG Verdampferbrenner, insbesondere für ein Fahrzeugheizgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513551A (en) * 1947-04-17 1950-07-04 Columbus Metal Products Inc Pilot structure for vaporizing burners
US2700418A (en) * 1951-07-28 1955-01-25 Clement R Gilmore Vaporizing type burner with functional recirculating ring and central stack chamber
DE1501780A1 (de) * 1966-10-25 1969-12-18 Niederscheld Gmbh Armaturwerk OElbrennertopf
NL7907496A (nl) * 1979-10-10 1981-04-14 Sesto Res Inst Bv Potbrander voor vloeibare brandstoffen.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8600388A1 *

Also Published As

Publication number Publication date
FI852558A0 (fi) 1985-06-27
AU4606385A (en) 1986-01-24
FI852558L (fi) 1985-12-30
EP0189445B1 (fr) 1987-10-14
DK270885A (da) 1985-12-30
NO157552B (no) 1987-12-28
AU569458B2 (en) 1988-01-28
SE8502805L (sv) 1985-12-30
JPS61502556A (ja) 1986-11-06
SE8502805D0 (sv) 1985-06-06
CA1246433A (fr) 1988-12-13
DK270885D0 (da) 1985-06-14
NO157552C (no) 1988-04-06
NO852628L (no) 1985-12-30
NZ212549A (en) 1987-03-06
WO1986000388A1 (fr) 1986-01-16
DE3424069C2 (de) 1987-01-15
SE459989B (sv) 1989-08-28
DE3424069A1 (de) 1986-01-02
US4674974A (en) 1987-06-23

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