EP0189445B1 - Bruleur a pot pour combustible liquide - Google Patents

Bruleur a pot pour combustible liquide Download PDF

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Publication number
EP0189445B1
EP0189445B1 EP85903266A EP85903266A EP0189445B1 EP 0189445 B1 EP0189445 B1 EP 0189445B1 EP 85903266 A EP85903266 A EP 85903266A EP 85903266 A EP85903266 A EP 85903266A EP 0189445 B1 EP0189445 B1 EP 0189445B1
Authority
EP
European Patent Office
Prior art keywords
space
burner
fuel
level
ring
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
Application number
EP85903266A
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German (de)
English (en)
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EP0189445A1 (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

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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 introduction to claim 1.
  • Such a burner is e.g. B. by the European patent EP-A-0 027 298 known.
  • 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 forms between the named transition and the edge of the circular outlet from the combustion chamber .
  • the fuel has to go through 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 that wants to pass between the ring and the second part, causing more fuel to find its way out of use under the ring.
  • the baskets specified in claims 4 and 5 and emit the radiant heat to the fuel flowing through the insert, the combustion can be promoted even further.
  • 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 mark 11-11 in Figure 1
  • 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 arranged concentrically with the center axis 20 of the wall 12 .
  • the fuel is fed 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 absorbs fuel, over the edge of the mouth 34 of the tube 22 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 by a non-perforated ring 46 below.
  • 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.
  • 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 a right angle.
  • the ring 46 adjoins the basket 25 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 room 10.
  • the fan supplies the air to a chamber 58 on the outside of wall 12.
  • the wall is provided with a circular lower row of openings 60, an intermediate circular 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 from the openings 60 unhindered.
  • 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 from the openings 62 are directed against the rounded part 54, which deflects the air jets upwards towards 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 provided in the middle of the rounded part 52.
  • the part 26 is arranged substantially level with the opening 18.
  • the rounded part 52 directs the air jets from the openings 64 upwards and then outwards according to FIG. 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 combustion of the mixing part which takes its way out of the chamber 36, is promoted by the intimate mixing of the mixture with further air in the gas curtain 66 and by heat radiation from the baskets 28 and 42, the part 40 and the ring 46.
  • 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, thereby facilitating the evaporation of the fuel. Regardless of the exempted heat effect, any fuel is usually vaporized before it reaches the periphery of plate 32.
  • Channel 70 is mounted between the periphery of the plate 32 and a conical central part 72 in the bottom 14, which conical part allows discharge of excess fuel even when the burner is strongly inclined, which may be the case when the burner is in a boat.
  • the fuel that is collected by the conical portion 72 is passed through a return line 80, e.g. B. to the tank that 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 is started, the fuel pump is allowed to operate 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 have taken considerably more time since 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 by means of a screen 82 from the cold air flowing into the chamber 58.
  • 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 that is supplied to the combustion chamber for the final combustion of the fuel mixture
  • primary air is the air that is supplied to the combustion chamber for the partial combustion of the fuel mixture before the final combustion takes place with secondary air.
  • the insert consisting of the parts 26, 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).

Claims (6)

1. Brûleur à combustible liquide, comprenant une chambre de combustion essentiellement cylindrique circulaire (10), une entrée (34) disposée a l'un des bouts de la chambre pour amener le combustible dans la chambre, des ouvertures (60, 62, 64) dans la paroi cylindrique de la chambre pour introduire de l'air de combustion dans la chambre, une sortie pour les gaz de la combustion, disposée à l'autre bout de la chambre et consistant en une ouverture circulaire (18) qui a un diamètre inférieur à celui de la chambre et qui est concentrique à celle-ci, et un insert dans la chambre sous forme d'une cage (28) ayant des côtés perforés qui s'étendent d'un côté à l'autre de la chambre et se terminent en une plaque de recouvrement non-perforée circulaire (40, 52, 26) concentrique à la chambre, caractérisé en ce que la plaque de recouvrement présente un premier élément centrocirculaire (26) disposé à un premier niveau qui est en général le même que celui de la sortie (18) et ayant un diamètre inférieur à celui de la sortie, que la plaque de recouvrement présente un deuxième élément annulaire (40) disposé à un deuxième niveau au-dessous du premier niveau et ayant un diamètre extérieur qui est plus grand que le diamètre de la sortie, que des ouvertures (64) pour l'air de combustion sont disposées dans la paroi cylindrique (12) de la chambre à un niveau entre le premier et le deuxième niveau, afin de faire l'air de combustion passer radialement vers la face (52) de la plaque de recouvrement, ladite face constituant la transition entre le premier (26) et le deuxième élément (40) de la plaque de recouvrement.
2. Brûleur selon la revendication 1, caractérisé en ce que la transition (52) présente une coupe longitudinale en général sous forme d'un quart de circonférence, dont un bout est en général parallèle au deuxième élément (40), et dont l'autre bout est en général à angles droits au premier élément (26).
3. Brûleur selon l'une quelconque des revendications précédentes, dans lequel le combustible est amené à un endroit (34) au centre de l'un des deux bouts de la chambre, caractérisé en ce qu'une première cage cylindrique circulaire (28), dont une extrémité se joint à la périphérie du premier élément (26), s'étend essentiellement jusqu'au niveau de l'entrée (34), la cage (28) étant entourée, à un niveau entre la plaque de recouvrement et l'entrée, d'un anneau (46) qui est essentiellement parallèle à l'autre élément (40) et se joint à la cage (28) par un collet (54) qui forme une transition ronde entre l'anneau (46) et la cage (28) et est dirigé vers la péripherie du premier élément (26).
4. Brûleur selon la revendication 3, caractérisé en ce qu'il y a prévue une deuxième cage cylindrique circulaire (48), dont une extrémité se joint à la péripherie de l'anneau (46), et qui s'étend essentiellement jusqu'au niveau de l'entrée (34).
5. Brûleur selon la revendication 4, caractérisé par une troisième cage cylindrique circulaire (42), dont une extrémité se joint à la périphérie du deuxième élément (40) et l'autre extrémité à la periphérie de l'anneau (46).
6. Brûleur selon l'une quelconque des revendications précédentes, dans lequel un bout de la chambre consiste en un fond thermoconducteur (14, 72), caractérisé par un écran (82) arrangé à l'extérieur du fond et destiné à empêcher l'air de combustion entrant dans le brûleur de refroidir le fond.
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
DE3424069 1984-06-29
DE19843424069 DE3424069A1 (de) 1984-06-29 1984-06-29 Topfbrenner fuer fluessigen brennstoff

Publications (2)

Publication Number Publication Date
EP0189445A1 EP0189445A1 (fr) 1986-08-06
EP0189445B1 true 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) DE3424069A1 (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
CN102625982B (zh) * 2009-05-01 2015-03-18 尼尔森（美国）有限公司 提供与主要广播媒体内容关联的辅助内容的方法、装置和制品
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 (2)

* Cited by examiner, † Cited by third party
Title
Patents Abstracts of Japan, Band 3, Nr. 33 (M52) 20, März 1979 *
Patents Abstracts of Japan, Band 4, Nr. 9, (M89) 23. Januar 1980 *

Also Published As

Publication number Publication date
AU569458B2 (en) 1988-01-28
WO1986000388A1 (fr) 1986-01-16
FI852558L (fi) 1985-12-30
NO157552C (no) 1988-04-06
JPS61502556A (ja) 1986-11-06
SE8502805D0 (sv) 1985-06-06
SE8502805L (sv) 1985-12-30
AU4606385A (en) 1986-01-24
NO157552B (no) 1987-12-28
SE459989B (sv) 1989-08-28
US4674974A (en) 1987-06-23
DK270885A (da) 1985-12-30
CA1246433A (fr) 1988-12-13
DK270885D0 (da) 1985-06-14
NO852628L (no) 1985-12-30
NZ212549A (en) 1987-03-06
DE3424069A1 (de) 1986-01-02
DE3424069C2 (fr) 1987-01-15
FI852558A0 (fi) 1985-06-27
EP0189445A1 (fr) 1986-08-06

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