EP0486741A1 - Gasheizgerät mit Infrarotstrahlung - Google Patents

Gasheizgerät mit Infrarotstrahlung Download PDF

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Publication number
EP0486741A1
EP0486741A1 EP90403285A EP90403285A EP0486741A1 EP 0486741 A1 EP0486741 A1 EP 0486741A1 EP 90403285 A EP90403285 A EP 90403285A EP 90403285 A EP90403285 A EP 90403285A EP 0486741 A1 EP0486741 A1 EP 0486741A1
Authority
EP
European Patent Office
Prior art keywords
gas
housing
air
air inlet
inlet
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.)
Withdrawn
Application number
EP90403285A
Other languages
English (en)
French (fr)
Inventor
Claude-Michel Céré
Dominique Boudrie
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.)
Dite Triatherm Sarl Ste
Original Assignee
Dite Triatherm Sarl Ste
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 Dite Triatherm Sarl Ste filed Critical Dite Triatherm Sarl Ste
Publication of EP0486741A1 publication Critical patent/EP0486741A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F23D14/125—Radiant burners heating a wall surface to incandescence
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
    • 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
    • F23D14/48—Nozzles
    • 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
    • F24C3/06—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate without any visible flame
    • F24C3/062—Stoves or ranges for gaseous fuels with heat produced wholly or partly by a radiant body, e.g. by a perforated plate without any visible flame stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • F26B3/305—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements the infrared radiation being generated by combustion or combustion gases

Definitions

  • the invention relates to a gas heating device, by infrared thermal radiation, more particularly intended to be placed in a room at a certain height and so as to emit infrared radiation towards the ground.
  • Infrared gas heaters are known, more particularly intended for heating large premises, in particular industrial or public premises.
  • Such a device is designed to emit infrared radiation towards the ground. This radiation is obtained by heating a metal body to a sufficient temperature, of the order of 400 to 500 °.
  • the device is equipped with at least one gas burner connected to a horizontal tube. The burner flame is directed towards the inside of the tube and a circulation of a mixture of hot air and gas resulting from combustion is maintained in the tube by a fan-extractor, connected to one end of it. The circulation of hot gases in the tube causes it to heat up. Said tube then emits infrared radiation.
  • a reflector is placed above the tube to return the fraction of the radiation emitted upwards to the ground.
  • the configuration and dimensions of the tube as well as the number of burners connected to this tube generally depend on the characteristics of the room to be heated. In simple cases, however, an appliance comprising only one burner and a tube shaped like a hairpin, often placed under the same reflector, is often used. The burner is connected at one end of the tube and the fan-extractor at the other end. The length of the device can reach up to 6 meters, or 12 meters of tube. Such an apparatus is of simple construction and installation and its cost price is attractive. On the other hand, its operation leaves something to be desired, insofar as it is difficult to obtain a uniform temperature of the tube and consequently a homogeneous radiation throughout the heated space.
  • the invention proposes another type of device, of simpler construction and of very low cost price, in particular due to the fact that the heating mode chosen and the natural circulation of the dilution air allow to consider, in most cases, the removal of any fan-extractor. More specifically, the invention therefore relates to a gas radiant heating device, characterized in that it comprises an elongated housing provided with an air inlet, lower, and a gas outlet, upper, and containing at least one gas rail arranged in the elongated direction of the housing along a radiation plate constituting at least part of a bottom wall of said housing and in that a baffle is arranged in the latter between the inlet and the outlet, so as to organize a circulation of gas enveloping said ramp and drawing down its flames towards said plate.
  • the dilution air is circulated all around the flame, while the latter extends over the entire length of the gas burner and therefore of the radiation plate.
  • the air circulation enveloping the gas ramp is done by natural convection and so that the flame is lowered and distributed uniformly over the largest part of the radiation plate, horizontal or slightly inclined, to radiate with the maximum of efficiency down to the ground.
  • the drawdown of the flame towards the horizontal is accentuated by the natural convection of the heated air in the room itself, especially if the device is placed high enough above the ground, because the rate of rise of the air heated in a room, tends to increase at the top of it.
  • this device comprises two gas ramps and two radiation plates arranged side by side in the same housing, symmetrically on either side of the air inlet, the latter being elongated in the form of a slot.
  • a gas heater comprising a housing 11, relatively flat in height and elongated in a horizontal direction.
  • This housing is provided with an air inlet 12, lower and a gas outlet 13, upper.
  • the inlet 12 and the outlet 13 are arranged one above the other, in the central part of the housing. They each have the form of a slot extending in the elongated direction of the housing.
  • This housing houses at least a gas ramp 15 disposed in said elongated direction along a metal radiation plate 16, constituting a part of the lower wall of the housing.
  • the housing houses two such gas ramps (15a, 15b) mounted back to back on either side of the air inlet 12 and arranged, each, along d 'a corresponding radiation plate 16a, 16b.
  • These two plates form the bulk of the lower wall of the housing 11.
  • the latter also contains a baffle 20 arranged between the inlet and the outlet so as to organize a gas circulation enveloping the or each ramp, and reducing its flames towards the corresponding radiation plate.
  • the baffle 20 comprises a deflector 21, central, preferably curved (as shown) in the transverse direction relative to the air inlet 12 and placed above the latter.
  • the position of this deflector is preferably adjustable inside the housing, this adjustment being carried out once and for all when the device is started up.
  • the central deflector 21 also substantially covers the two gas railings, at a certain distance from them.
  • the deflector 21 is extended over its entire length, by two lateral deflectors 22a, 22b, substantially covering the radiation plates 16a, 16b, respectively, at a distance therefrom.
  • Each lateral deflector is made of thermally insulating material or at least its lower face, facing the flame is covered with such an insulating material.
  • the gas supply conduit 25, supplying the two ramps and the electrical supply conductors 26 driving the valves and the ignition device (for example of the piezoelectric type) are connected at one end from the housing 11.
  • the mixture of air and burnt gas is evacuated into the room itself, the outlet 13 not being covered.
  • an extractor hood 28 shown in broken lines, can be placed above the outlet 13 and connected to a mechanical extractor 30, electrically powered.
  • the two radiation plates 16a, 16b are not strictly arranged horizontally, they form an obtuse dihedral, almost flat, the top of which is occupied by the air inlet 12.
  • the side deflectors 22a, 22b are arranged substantially parallel to the radiation plates 16a, 16b, respectively.
  • each radiating plate near its longitudinal edge furthest from the inlet 12, is an air ducting rib 32a, 32b, respectively.
  • Each rib is inclined downward and forms a sharp dihedral with the neighboring radiation plate, as shown.
  • This dilution air is guided along the plates 16.
  • a flap 36 in the form of an obtuse dihedral is positioned in look at entrance 12, below and at a distance from it. The point of the dihedral is opposite the median plane of the entrance. It is fixed to the housing by means of bracing not shown.
  • the spacing of the shutter 36 relative to the air inlet is adjustable, when the device is put into service.
  • Such a ramp 15 comprises an injector 40, shaped as a Venturi, with a fuel gas inlet 41, axial, and a combustion air inlet 42, annular.
  • This injector opens into an elongated distribution chamber 45, extending substantially along the entire length of the housing.
  • the cross section of the distribution chamber 45 decreases as a function of the distance from the injector 40, thanks to a rear wall 45a placed at an angle, as can be seen in FIG. 3.
  • This feature allows the air-gas mixture to be distributed substantially at constant pressure all along the ramp. A flame of practically constant length is thus obtained at every point of the ramp.
  • the gas train 15 has a longitudinal slot 48 materialized between two parallel lips 49 extending laterally the distribution chamber 45.
  • This slot which constitutes the flame outlet of the gas train, therefore communicates over its entire length with the distribution chamber 45.
  • the flame output is therefore continuous, which contributes to creating a flame in the form of a flat strip.
  • the spacing of the two lips 49 is adjustable, depending on the conditions on site and the calorific value of the fuel used. This adjustment is carried out here by inserting spacers 50, of selected height, between the lips 49. Such spacers are placed at regular intervals along the slot.
  • the dilution air which enters through the inlet 12 is divided into two opposite streams respectively bypassing the gas ramps 15a, 15b and drawing down the flames in a position close to the horizontal, capable of ensuring optimum heating. and uniform of the corresponding plates 16a, 16b. Then the mixture of air and burnt gas circulates beyond the flames in the baffle 20 before being rejected by the outlet 13.
  • the position of the central deflector 21 makes it possible in particular to adjust the orientation of the flames relative to the horizontal, within the limits of approximately 10 ° and therefore to adjust, to a certain extent, the temperature of the radiation plates 16.
  • the adjustment of the distance between the flap 36 and the inlet 12 makes it possible to dose the quantity of dilution air participating in the cooling of the combustion products. This also contributes to controlling the temperature of the radiation plates.
  • the device which has just been described is suitable for heating premises of relatively great height, it can also be used for drying products exposed to its radiation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
EP90403285A 1989-11-17 1990-11-21 Gasheizgerät mit Infrarotstrahlung Withdrawn EP0486741A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8915089A FR2654806B1 (fr) 1989-11-17 1989-11-17 Appareil de chauffage au gaz par rayonnement infrarouge.

Publications (1)

Publication Number Publication Date
EP0486741A1 true EP0486741A1 (de) 1992-05-27

Family

ID=9387487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403285A Withdrawn EP0486741A1 (de) 1989-11-17 1990-11-21 Gasheizgerät mit Infrarotstrahlung

Country Status (2)

Country Link
EP (1) EP0486741A1 (de)
FR (1) FR2654806B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643261A1 (de) * 1993-09-13 1995-03-15 Gastec N.V. Kompakter gasbetriebener Infrarot-Strahler in geschlossener Bauart
EP0769658A1 (de) * 1995-10-21 1997-04-23 Herbert Baumanns Gasbeheizter Wärmestrahler
CN103748416A (zh) * 2011-07-27 2014-04-23 株式会社Ihi 燃烧加热器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680225A1 (fr) * 1991-08-08 1993-02-12 Fadime Sarl Dispositifs de chauffage au gaz par rayonnement.
DE19631475A1 (de) * 1996-08-03 1998-02-05 Stefan Kemna Strahlungswärmeheizung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK5538C (da) * 1903-03-23 Leonhard Bauer Ovn med Gasopvarmning til Strygejærn og lignende.
FR678827A (fr) * 1929-07-22 1930-04-04 Perfectionnements apportés aux appareils de chauffage à gaz
CH329290A (de) * 1954-12-09 1958-04-30 Roemer Raoul Gasheizgerät
AU559110B3 (en) * 1986-06-11 1987-03-12 G.L.G. Australia Pty. Limited Improvements relating to gas burners

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK5538C (da) * 1903-03-23 Leonhard Bauer Ovn med Gasopvarmning til Strygejærn og lignende.
FR678827A (fr) * 1929-07-22 1930-04-04 Perfectionnements apportés aux appareils de chauffage à gaz
CH329290A (de) * 1954-12-09 1958-04-30 Roemer Raoul Gasheizgerät
AU559110B3 (en) * 1986-06-11 1987-03-12 G.L.G. Australia Pty. Limited Improvements relating to gas burners

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643261A1 (de) * 1993-09-13 1995-03-15 Gastec N.V. Kompakter gasbetriebener Infrarot-Strahler in geschlossener Bauart
NL9301581A (nl) * 1993-09-13 1995-04-03 Gastec Nv Compacte gasgestookte infraroodstraler in gesloten uitvoering.
US5483948A (en) * 1993-09-13 1996-01-16 Gastec N.V. Compact gas-fired infrared radiator of closed design
EP0769658A1 (de) * 1995-10-21 1997-04-23 Herbert Baumanns Gasbeheizter Wärmestrahler
CN103748416A (zh) * 2011-07-27 2014-04-23 株式会社Ihi 燃烧加热器
EP2738462A4 (de) * 2011-07-27 2015-01-07 Ihi Corp Verbrennungsheizgerät
US9416964B2 (en) 2011-07-27 2016-08-16 Ihi Corporation Combustion heater
CN103748416B (zh) * 2011-07-27 2018-11-02 株式会社 Ihi 燃烧加热器

Also Published As

Publication number Publication date
FR2654806B1 (fr) 1992-02-14
FR2654806A1 (fr) 1991-05-24

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