EP1105682A1 - Procede pour faire fonctionner un br leur et br leur facilitant sa mise en oeuvre - Google Patents
Procede pour faire fonctionner un br leur et br leur facilitant sa mise en oeuvreInfo
- Publication number
- EP1105682A1 EP1105682A1 EP00938889A EP00938889A EP1105682A1 EP 1105682 A1 EP1105682 A1 EP 1105682A1 EP 00938889 A EP00938889 A EP 00938889A EP 00938889 A EP00938889 A EP 00938889A EP 1105682 A1 EP1105682 A1 EP 1105682A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- ignition
- obstacle
- fuel
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/34—Continuously applied ignition cycles
Definitions
- Self-evaporative burners in which the fuel is heated beforehand by indirect heat exchange with the burner flame, have, by the fact that the burner body acts as a heat exchanger, ratios of total length / diameter of the around 2; if such a ratio favors compactness, it leads to a certain number of drawbacks: unstable flame, impossibility of using high primary aeration, very difficult ignition by electrode requiring recourse to expensive auxiliary devices.
- US-A-4 145 179 describes a burner ignition control. When the flame goes out, it is re-lit once and if the burner goes out again for a prescribed time, the burner is stopped.
- the invention remedies these drawbacks by a method for operating a burner, characterized in that it consists in carrying out a plurality of ignition operations of the burner during the entire time that the burner is to operate.
- plurality we mean more than two and, in fact, several tens, even several hundreds or more.
- the process consists in carrying out, although a flame is already erupting from the burner, successive ignition operations regularly over time at an interval of time between two ignition operations less than a duration of operation of the burner and in particular at an interval of time less than a second and preferably around a tenth of a second.
- Each ignition operation can result in obtaining a spark lasting 3 to 10 ⁇ s.
- An ignition operation is started while a flame is already erupting from the burner.
- the invention also relates to a burner with an electric circuit for controlling a valve for sending fuel to the burner and an ignition device.
- the circuit is such that the ignition device is energized as long as the valve is open.
- the circuit is such that when the ignition device is energized, it produces successive ignitions.
- the ignition device successively comprises an oscillator, a power stage, a step-up transformer and an ignition electrode which is mounted in the burner.
- the burner comprises a tube in which is mounted an obstacle creating a zone of turbulence and the ignition electrode is mounted so as to make spark a spark in the turbulence zone.
- the disturbing device may consist of a heat-resistant ball with a diameter of 5 to 10 mm placed 55 mm from the bottom of the tubular body of the burner with a diameter of 52 mm and a length of 95 mm - the distance being taken when the mixture arrives in the burner, the electrode being placed about 5 mm from the walls in the turbulent zone established at about 65 mm from the bottom of the burner.
- the subject of the invention is also a burner comprising a tube into which an inlet for fuel, an inlet for oxidant such as air, and an outlet for the ignited mixture of fuel and oxidant and in which is mounted an obstacle, characterized in that the obstacle is a solid body, in particular a ball, occupying only a part of the section of the tube.
- a solid obstacle is easier to manufacture than a perforated obstacle (US-A-3460 910 or GB-A-13 34 832) and reduces pressure losses by allowing a relatively large passage between the ball and the wall of the tube.
- the obstacle is shaped so as to provide between it and the tube a substantially flat gap and to give with the side wall of the burner a flat flame.
- the length of the interval represents for example more than 5 times and better more than 10 times the maximum width of the gap.
- a flame-treated surface is also obtained which is maximum for a given flow rate, making it possible for example to maximize the surface for weeding by burning when the burner is used for this purpose.
- FIG. 1 is a diagram of a burner according to the invention and FIGS. 2 and 3 illustrate two variants of the burner according to the invention.
- the burner represented in FIG. 1 comprises an accumulator 1 which can be constituted by the battery of a carrier vehicle and which supplies, via a switch 2, in parallel the coil 3 of a solenoid valve
- the solenoid valve 4 is placed on the fuel supply conduit 8 to a body 9 of burner. Although this is not shown in the figure, the fuel first passes through a jacket along the body 9 of the burner before entering the body 9 of the burner.
- the transformer 7 supplies by a conductor 10 an electrode 16 for igniting the burner mounted in the body 9 by means of an insulator 11.
- Inside the body 9 of the burner is mounted by two rods extending along the longitudinal direction of the body 9, a ball 12 of steel 5 mm in diameter placed 55 mm from the bottom of the body, which has a diameter of 52 mm and a length of 95 mm.
- the electrode 11 is placed approximately 5 mm from the walls in the turbulence zone established at approximately 65 mm from the bottom of the tubular body, the bottom where there is an inlet for fuel and, not shown, an inlet for air.
- switch 2 When switch 2 is open, the whole system is at rest. Fuel is not sent to the burner and the ignition device does not work. But as soon as the switch 2 is closed, fuel arrives at the burner and it is ignited by the electrode 11, the ignition operations being carried out continuously as long as the switch 2 is closed, at the rate of 3 sparks of 5 ⁇ s per second. The flaming mixture of fuel and air exits at the end of the body 9 opposite the bottom.
- Figure 2 shows a burner in which the body 13 is rectangular and defines with the ball 14 crescent-shaped intervals relatively flat so that the flames coming out of the burner are in the form of a veil.
- the minimum distance between the ball 14 and each short side of the rectangular body 13 is less than the diameter of the ball, for example less than 50 mm.
- Figure 3 which is a sectional view of a burner, we recognize the ball 12 and the body 9 of the burner. There is also a secondary air inlet 15 and an ionization control electrode 16 which makes it possible to verify that the combustion is well established and if not to take corrective actions such as closing the supply.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Gas Burners (AREA)
- Saccharide Compounds (AREA)
- Materials For Medical Uses (AREA)
- Incineration Of Waste (AREA)
- Control Of Combustion (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04077558A EP1491822A1 (fr) | 1999-06-08 | 2000-06-06 | Brûleur à obstacle créant une turbulence |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9907178 | 1999-06-08 | ||
FR9907178A FR2794847B1 (fr) | 1999-06-08 | 1999-06-08 | Procede pour empecher la flamme d'un bruleur de s'eteindre et bruleur facilitant sa mise en oeuvre |
PCT/FR2000/001540 WO2000075572A1 (fr) | 1999-06-08 | 2000-06-06 | Procede pour faire fonctionner un brûleur et brûleur facilitant sa mise en oeuvre |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077558A Division EP1491822A1 (fr) | 1999-06-08 | 2000-06-06 | Brûleur à obstacle créant une turbulence |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1105682A1 true EP1105682A1 (fr) | 2001-06-13 |
EP1105682B1 EP1105682B1 (fr) | 2005-03-02 |
Family
ID=9546482
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077558A Withdrawn EP1491822A1 (fr) | 1999-06-08 | 2000-06-06 | Brûleur à obstacle créant une turbulence |
EP00938889A Expired - Lifetime EP1105682B1 (fr) | 1999-06-08 | 2000-06-06 | Procede pour faire fonctionner un bruleur et bruleur facilitant sa mise en oeuvre |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077558A Withdrawn EP1491822A1 (fr) | 1999-06-08 | 2000-06-06 | Brûleur à obstacle créant une turbulence |
Country Status (8)
Country | Link |
---|---|
EP (2) | EP1491822A1 (fr) |
AT (1) | ATE290191T1 (fr) |
AU (1) | AU5411800A (fr) |
DE (1) | DE60018358T2 (fr) |
ES (1) | ES2234621T3 (fr) |
FR (1) | FR2794847B1 (fr) |
PT (1) | PT1105682E (fr) |
WO (1) | WO2000075572A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9702550B2 (en) * | 2012-07-24 | 2017-07-11 | Clearsign Combustion Corporation | Electrically stabilized burner |
CN103672957A (zh) * | 2013-12-23 | 2014-03-26 | 周云侠 | 单节电池煤气电子点火器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE328305B (fr) * | 1964-07-10 | 1970-09-14 | A Aronsohn | |
FR1495884A (fr) * | 1966-10-05 | 1967-09-22 | Babcock & Wilcox Co | Allumeur pour brûleurs de combustible |
DE7117819U (de) * | 1971-05-07 | 1971-08-05 | Kromschroeder G Ag | Zuendbrenner |
JPS587130B2 (ja) * | 1976-11-29 | 1983-02-08 | 株式会社日立製作所 | 燃焼制御装置 |
US4249884A (en) * | 1977-12-27 | 1981-02-10 | Electronics Corporation Of America | Burner control apparatus with stabilized pilot flame timing interval |
JPS5538422A (en) * | 1978-09-11 | 1980-03-17 | Hitachi Ltd | Control device for burner |
-
1999
- 1999-06-08 FR FR9907178A patent/FR2794847B1/fr not_active Expired - Fee Related
-
2000
- 2000-06-06 EP EP04077558A patent/EP1491822A1/fr not_active Withdrawn
- 2000-06-06 ES ES00938889T patent/ES2234621T3/es not_active Expired - Lifetime
- 2000-06-06 WO PCT/FR2000/001540 patent/WO2000075572A1/fr active IP Right Grant
- 2000-06-06 AT AT00938889T patent/ATE290191T1/de not_active IP Right Cessation
- 2000-06-06 AU AU54118/00A patent/AU5411800A/en not_active Abandoned
- 2000-06-06 EP EP00938889A patent/EP1105682B1/fr not_active Expired - Lifetime
- 2000-06-06 PT PT00938889T patent/PT1105682E/pt unknown
- 2000-06-06 DE DE60018358T patent/DE60018358T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0075572A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2794847B1 (fr) | 2001-07-20 |
ES2234621T3 (es) | 2005-07-01 |
AU5411800A (en) | 2000-12-28 |
PT1105682E (pt) | 2005-07-29 |
DE60018358D1 (de) | 2005-04-07 |
EP1491822A1 (fr) | 2004-12-29 |
WO2000075572A1 (fr) | 2000-12-14 |
FR2794847A1 (fr) | 2000-12-15 |
ATE290191T1 (de) | 2005-03-15 |
DE60018358T2 (de) | 2005-09-22 |
EP1105682B1 (fr) | 2005-03-02 |
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