EP0035797A1 - Brûleur à gaz pour la production de rayons infrarouges - Google Patents

Brûleur à gaz pour la production de rayons infrarouges Download PDF

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Publication number
EP0035797A1
EP0035797A1 EP81101800A EP81101800A EP0035797A1 EP 0035797 A1 EP0035797 A1 EP 0035797A1 EP 81101800 A EP81101800 A EP 81101800A EP 81101800 A EP81101800 A EP 81101800A EP 0035797 A1 EP0035797 A1 EP 0035797A1
Authority
EP
European Patent Office
Prior art keywords
screen
gas
gas burner
nets
burner head
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
EP81101800A
Other languages
German (de)
English (en)
Other versions
EP0035797B1 (fr
Inventor
Polidoro Silvio
Gavasso Alvise
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.)
Infra- Kolb KG & Co GmbH
SLA Lavorazione Accai SpA Soc
Original Assignee
Infra- Kolb KG & Co GmbH
SLA Lavorazione Accai SpA Soc
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 Infra- Kolb KG & Co GmbH, SLA Lavorazione Accai SpA Soc filed Critical Infra- Kolb KG & Co GmbH
Publication of EP0035797A1 publication Critical patent/EP0035797A1/fr
Application granted granted Critical
Publication of EP0035797B1 publication Critical patent/EP0035797B1/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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/04—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate
    • F24C3/042—Stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/148—Radiant burners using screens or perforated plates with grids, e.g. strips or rods, as radiation intensifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/11401—Flame intercepting baffles forming part of burner head

Definitions

  • the invention relates to a gas burner for generating infrared rays, with a venturi tube for supplying the gas-air mixture and a glow surface arranged at a distance in front of a concave screen made of a metallic grid or perforated plate.
  • Such gas burners are used wherever intensive and concentrated heat radiation is required in a limited space, such as in chicken grilling stations, in the quick drying of building parts and structures, for accelerated setting of concrete components and in road construction for the replastification of asphalt surfaces.
  • the operation of the known gas burner cannot yet optimally satisfy in so far as the efficiency, i.e. the energy yield of the gas is not high enough that in the event of gusts of wind the flames can strike backwards into the distribution space and that the temperature of the glow surface is not high enough, but is only around 850 ° C.
  • the object of the invention is therefore to provide a gas burner which, while eliminating the disadvantages described, has a greater yield in the desired infrared rays This is made possible by improving the combustion of the gas, increasing the combustion temperature and thereby increasing the temperature of the glow surface. In all practical situations of use of the burner, the flame should be prevented from striking back and thus the combustion of the gas at an undesired point, in particular in the lamp housing, with certainty.
  • An example of a field of application for gas burners is road construction, where large batteries of gas burners are used to repair the roads and repair damaged road surfaces in order to soften the asphalt surface of the train as quickly and deeply as possible through intensive infrared radiation.
  • the gas burners mounted on a chassis are directed downwards and are slowly moved at a speed of about two to three meters per minute close to the surface of the road surface.
  • the disadvantages identified in this work stem in particular from the fact that individual burners either become defective due to mutual influence or as a result of the high firing temperature, or that the flames blow back due to gusts of wind and the burners fail or therefore only partially output power, so that local temperature differences on the road surface in the Asphalt occur.
  • the combustion gas exits largely radially, so that the glowing gases spread out on all sides like a corona, get into the distribution chamber and emerge evenly over the entire surface via the front metal grille or perforated plate, which acts as a glow surface, causing the metal grille to emerge starts to glow and reaches a temperature of over 1000 ° C. Any combustible remains that are still present in the exhaust gas are completely burned on the glowing metal grille by the entry of oxygen from the ambient air. Comparisons of the gas burner according to the invention with those of the conventional type made in experiments have yielded an approximately 25% higher yield of infrared rays under otherwise identical conditions.
  • FIG. 1 the right half of the otherwise axially symmetrical gas burner according to the invention for generating infrared rays is shown in cross section.
  • a Venturi tube 2 Centrally in the course of the central axis of the gas burner, a Venturi tube 2 is arranged in a protective tube 5 in a known manner with its end lying inside the gas burner is firmly connected to a nozzle 6 which is formed in the center of a concave screen 8.
  • combustible gas for example propane or butane
  • the burner head 20 consists essentially of the cylindrical and concentric fine mesh wire meshes or grids 13 and 14 shown in Figures 2 and 3, of which the internal mesh 13 has the finer mesh pitch in order to prevent flashbacks in the Venturi tube.
  • the end face of the firing head 20 can be tightly sealed or - as shown in the example - can have a double mesh or mesh which is similar to the meshes 13 and 14 shown in FIGS. 2 and 3.
  • a double flange 15 inserted transversely to the longitudinal axis of the burner head 20 causes the combustible gas-air mixture to be distributed and deflected in the radial direction of the burner head, so that it exits the cylindrical networks 13, 14 at a comparatively high speed.
  • the front flange 15 lies against the inside of the nets forming the end face 17 of the burner head 20 and has some smaller openings 15a through which a smaller part of the gas-air mixture reaches the end nets and exits there for combustion.
  • the second flange 15 lies approximately in the middle of the burner head and has some larger openings 15b, the total cross-sectional area of which is larger than that of the openings provided in the other flange.
  • a heat-resistant metal grid or perforated plate is arranged, which extends in a slightly convex manner to the edge of the screen 8 and is firmly connected there with the aid of a peripheral frame 11 or by folding the wheels of the screen 8 .
  • a distribution chamber 9 is formed around the burning head 20 between the screen 8 and the grid 10, which is a uniform Distribution of the hot combustion gases, which emerge radially from the burner head in the direction of the arrows 18, so that they pass through the grating 10, which acts as a glow surface, at a lower gas velocity and cause it to glow in red-orange to yellow-orange color.
  • Another metal grille 9 with a somewhat finer mesh division extends approximately in the middle of the distribution chamber 19 between the screen 8 and the grille 10 up to the frame 11, from which it is also held.
  • a generously sized opening 16 is provided in the center of the grating 9, through which the burner head 20 extends and which allows sufficient space for the unimpeded spread of the blue flames forming a corona.
  • two or three parallel grids can also be provided.
  • all nets and grids are made of so-called expanded metal and the transverse and coarse-meshed glow grids or perforated plates can additionally be provided with arched features or beads for reinforcement.
  • a heat-resistant insulating layer 12 can be arranged on the back of the screen 8 concentrically with the protective tube 5, which is covered by means of a metal hood 4, the edge of the metal hood can also be firmly connected with the frame 11 or by flanging its edge with the screen 8 and the metal grids 9, 10.
  • the screen 8 it may be expedient to design the screen 8 as a perforated plate.
  • a swirling element is advantageously arranged between the gas nozzle 1 and the Venturi tube 2.
  • a helical wire spring 21 which is attached to the nozzle 1, is arranged for this purpose, which causes the gas-air mixture to be vortexed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP81101800A 1980-03-12 1981-03-11 Brûleur à gaz pour la production de rayons infrarouges Expired EP0035797B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8553380 1980-03-12
IT85533/80A IT1141852B (it) 1980-03-12 1980-03-12 Bruciatore a gas,a raggi infrarossi rivolti verso il basso

Publications (2)

Publication Number Publication Date
EP0035797A1 true EP0035797A1 (fr) 1981-09-16
EP0035797B1 EP0035797B1 (fr) 1984-07-04

Family

ID=11327633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101800A Expired EP0035797B1 (fr) 1980-03-12 1981-03-11 Brûleur à gaz pour la production de rayons infrarouges

Country Status (4)

Country Link
EP (1) EP0035797B1 (fr)
DE (3) DE3109082A1 (fr)
FR (1) FR2478266A1 (fr)
IT (1) IT1141852B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255472A2 (fr) * 1986-07-28 1988-02-03 Joh. Vaillant GmbH u. Co. Brûleur à gaz
FR2642821A1 (fr) * 1989-02-07 1990-08-10 Etu Realisa Equip Materie Cent Radiant infra-rouge a gaz avec pre-chambre de diffusion et thermocouple a fusible haute temperature
GB2210965B (en) * 1987-12-15 1992-06-10 Moffat Appliances Ltd Gas burner for a cooking tank or for heating air
JPWO2018122948A1 (ja) * 2016-12-27 2019-10-31 静岡製機株式会社 赤外線放射ヒータ

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3218258C2 (de) * 1982-05-14 1986-10-23 Osaka Gas Co. Ltd., Osaka Oberflächenbrenner mit einstufiger Primärluftzufuhr
AT404295B (de) * 1994-12-21 1998-10-27 Vaillant Gmbh Strahlungsbrenner
DE29515758U1 (de) * 1995-10-04 1995-11-30 Abacus Ag Geschaeftsbereich Te Gasbetriebener Infrarot-Strahler mit strukturierter Metall-Glühzone

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606745A1 (de) * 1976-02-19 1977-09-01 Herbert Baumanns Strahlungsbrenner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336816A (en) * 1941-08-13 1943-12-14 Peerless Mfg Corp Gas heater
US2464333A (en) * 1947-01-10 1949-03-15 Frederick G Mcglaughlin Radiant incandescent gas burner
US3021893A (en) * 1954-11-08 1962-02-20 Schweiz Gasapp Fabrik Solothur Radiating gas burner
FR1397173A (fr) * 1963-11-04 1965-04-30 Bernz O Matic Corp Perfectionnements aux radiateurs à gaz portatifs
FR2080088A6 (fr) * 1970-02-23 1971-11-12 Chaudronnerie Entr Indle
GB1433771A (en) * 1973-01-16 1976-04-28 Parkinson Cowan Appliances Ltd Gas burner
US3857670A (en) * 1973-03-29 1974-12-31 Int Magna Corp Radiant burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606745A1 (de) * 1976-02-19 1977-09-01 Herbert Baumanns Strahlungsbrenner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255472A2 (fr) * 1986-07-28 1988-02-03 Joh. Vaillant GmbH u. Co. Brûleur à gaz
EP0255472A3 (en) * 1986-07-28 1989-01-25 Joh. Vaillant Gmbh U. Co. Gas burner
GB2210965B (en) * 1987-12-15 1992-06-10 Moffat Appliances Ltd Gas burner for a cooking tank or for heating air
FR2642821A1 (fr) * 1989-02-07 1990-08-10 Etu Realisa Equip Materie Cent Radiant infra-rouge a gaz avec pre-chambre de diffusion et thermocouple a fusible haute temperature
EP0382286A2 (fr) * 1989-02-07 1990-08-16 Centre D'etude Et De Realisations D'equipement Et De Materiel (C.E.R.E.M.) S.A.R.L. Appareil de chauffage du type infrarouge
EP0382286A3 (en) * 1989-02-07 1990-10-10 Cerem Infra-red heater
JPWO2018122948A1 (ja) * 2016-12-27 2019-10-31 静岡製機株式会社 赤外線放射ヒータ
US11041618B2 (en) 2016-12-27 2021-06-22 Shizuoka Seiki Co., Ltd. Infrared radiation heater
EP3531797B1 (fr) * 2016-12-27 2021-12-01 Shizuoka Seiki Co., Ltd. Dispositif de chauffage par rayonnement infrarouge

Also Published As

Publication number Publication date
FR2478266A1 (fr) 1981-09-18
DE8106837U1 (de) 1981-09-03
IT1141852B (it) 1986-10-08
DE3109082A1 (de) 1982-03-11
IT8085533A0 (it) 1980-03-12
EP0035797B1 (fr) 1984-07-04
DE3109145A1 (de) 1983-09-08

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