WO1998053249A1 - Appareil de chauffage - Google Patents
Appareil de chauffage Download PDFInfo
- Publication number
- WO1998053249A1 WO1998053249A1 PCT/FR1998/000990 FR9800990W WO9853249A1 WO 1998053249 A1 WO1998053249 A1 WO 1998053249A1 FR 9800990 W FR9800990 W FR 9800990W WO 9853249 A1 WO9853249 A1 WO 9853249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- burner
- duct
- reflector
- heating device
- air
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 57
- 238000002485 combustion reaction Methods 0.000 claims abstract description 53
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000013021 overheating Methods 0.000 claims abstract description 9
- 244000144972 livestock Species 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 27
- 239000000725 suspension Substances 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012550 audit Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- ZRHANBBTXQZFSP-UHFFFAOYSA-M potassium;4-amino-3,5,6-trichloropyridine-2-carboxylate Chemical compound [K+].NC1=C(Cl)C(Cl)=NC(C([O-])=O)=C1Cl ZRHANBBTXQZFSP-UHFFFAOYSA-M 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/82—Preventing flashback or blowback
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K31/00—Housing birds
- A01K31/18—Chicken coops or houses for baby chicks; Brooders including auxiliary features, e.g. feeding, watering, demanuring, heating, ventilation
- A01K31/19—Brooders ; Foster-mothers; Hovers
-
- 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
- F23D14/151—Radiant burners with radiation intensifying means other than screens or perforated plates
-
- 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
- F23D14/30—Inverted burners, e.g. for illumination
-
- 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
- F23D14/64—Mixing devices; Mixing tubes with injectors
-
- 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
- F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
- F24C1/08—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating
- F24C1/10—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating with reflectors
- F24C1/12—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating with reflectors of circular shape
Definitions
- the present invention relates to a heating device of the infrared type and applies, in particular, to a heating device intended for the agricultural sector for the directional heating towards the ground of livestock buildings.
- Infrared type heaters are widely used today. They are used for various purposes. Among their many applications, one relates to the heating of livestock buildings. In the case of this application, the heating devices are used in a state suspended from ramps arranged in said livestock buildings. The suspension height of the heating devices in this type of installation is therefore a particularly important parameter. For many years, it has been sought to reduce this suspension height so as to increase the efficiency of the heating device and to save energy. At the same time, there are many risks of fire in such installations, in particular by projection of combustion particles. These risks are increased on the one hand by the presence of numerous dusts in the atmosphere, on the other hand, by the presence of dry straw on the ground. Finally, this heating device being intended for the heating of animals, it is essential to create zones where the temperature is maintained in a more or less homogeneous and constant manner avoiding any creation of zone of overheating.
- This heating device described in patent EP-A-0,382,286, consists of a reflector, a supply pipe for air / gas mixture, a combustion chamber and a diffusion chamber. , the assembly being organized around a common axis corresponding to the axis of the air / gas mixture supply duct.
- the choice of the reflector consisting of a reflection dome and the profile of the chambers only contributed to a concentrated and localized radiation of the whole of the device in a zone of reduced surface located substantially below the heating device.
- the purpose of the present invention is therefore to overcome the - ⁇ the aforementioned drawbacks by proposing a downward heating device whose design makes it possible to enlarge the surface of the projected radiant zone while avoiding the creation of overheating zones.
- Another object of the present invention is to provide a heating device whose design makes it possible to eliminate the risk of fire by projection of particles on the ground.
- Another object of the present invention is to provide a heating device the design of which makes it possible to reduce the suspension height of this device without creating overheating zones on the ground.
- the subject of the invention is an infrared type heating appliance, in particular intended for the agricultural sector, for directional heating downwards of livestock buildings, this appliance comprising at least one burner delimiting at least one duct for supply of gas / air mixture, a reflector surrounding the supply duct and a combustion chamber of the air / gas mixture located at the end of said duct and coaxial with the reflector, characterized in that the combustion chamber of the burner arranged coaxial with the reflector cooperates with a full screen located below and in the axis of the burner duct to, on the one hand, stop the fall of particles emanating from combustion, and on the other hand, reduce the intensity of the axial radiation of the device thereby eliminating central overheating.
- the combustion chamber is formed by a base coaxial with the burner duct, this base being extended by a perforated peripheral wall in the shape of a truncated cone, the small base of which is formed by the solid screen.
- FIG. 1 represents a vertical section view of a heating device according to the invention
- FIG. 2 shows a vertical sectional view of another embodiment of a heating device according to the invention.
- the invention applies to suspended heating appliances or devices with heating downwards.
- the heating device or device as shown in FIG. 1, is more particularly intended for the agricultural sector, for directional heating downwards of livestock buildings.
- This device intended to be supplied with gas, is connected to a gas source by suitable connection means.
- Each appliance also includes a gas / air mixture burner.
- This burner consists of a supply duct 2 for air / gas mixture, a reflector 3 and a combustion chamber 4.
- the duct 2 is conventionally provided with a venturi element 13, a air / gas mixing chamber and, upstream of the latter, an inlet mouth 16 for the primary combustion air and an injector 14.
- the pipe 2 of the burner generally takes the form of a bent pipe one of the branches of which partially penetrates into the reflector 3 through a central orifice formed in the flat bottom 8 of this reflector 3.
- the second branch of the conduit 2 generally extends substantially horizontally.
- the horizontal branch of the conduit 2 generally carries the injector 14 and the air inlet 16.
- Such a form of conduit is produced in FIG. 2.
- any other form of duct can be considered as shown in FIG. 1.
- the burner duct 2 is organized around a vertical axis, the gas injection being effected axially by means of the injector 14 at the inside the duct 2 as well as the entry of primary combustion air which takes place through openings 16 arranged at the upper end of said duct 2.
- the gas injector 14 is disposed axially at the inside the burner duct 2, in the upper part of the latter, and where the air inlet 16 is arranged in the upper part of the duct 2, the air opens axially inside said duct 2 so the air and the gas circulate inside the duct 2 of the burner along an essentially vertical trajectory, thus preventing any accumulation of dust contained in the air inside said duct 2.
- the presence of the full screen which will be described below, then becomes indispe nsable.
- the gas injector 14 is connected via an injection pipe opening radially in the pipe 2 of the burner to a safety valve 17 external to said audit conduit 2 of the burner, this safety valve 17 being disposed in the immediate vicinity of the conduit 2 to reduce the tilting torque which it exerts on the burner.
- the reflector 3 is in turn shaped to surround the duct 2 of said burner. It is subject to the latter towards the so-called lower end of this conduit. Generally, this reflector 3 is secured to said conduit in a sealed manner.
- the heater burner also has a combustion chamber 4 of the air / gas mixture located at the end of the pipe 2 of the burner and coaxial with the reflector 3.
- This heating device is characterized, according to the invention, by the presence of a full screen 5 located below and in the axis of the duct 2 of the burner.
- the screen 5 is located below the mouth or outlet of the burner pipe 2 and constitutes at least part of the bottom face of the combustion chamber 4.
- this screen 5 could also be positioned outside said combustion chamber 4 below the latter.
- This screen 5 cooperates with the combustion chamber 4 to on the one hand stop the fall of particles emanating from the combustion and on the other hand reduce the intensity of the axial radiation of the heating device, thus eliminating central overheating, this overheating risking eventually generate a fire.
- the combustion chamber 4 is generally formed by a base 6 coaxial with the duct 2 of the burner, a bottom constituting said solid screen 5 and a perforated peripheral wall 7 connecting the bottom and the base 6 of said chamber.
- the combustion chamber 4 is formed by a base 6 coaxial with the duct 2 of the burner, in particular at the vertical portion of this duct, this base 6 being extended by a peripheral wall 7 perforated in the shape of a truncated cone, the small base of which is formed by the solid screen 5.
- This solid screen 5 can be produced by means of a refractory plate.
- the frustoconical peripheral wall 7 of radiation of the combustion chamber 4 is preferably flexibly secured to the base 6 of said chamber to allow its expansion at its base on the periphery of the base.
- This peripheral wall 7 constituting a grid is preferably made of woven metal to increase the proportion of vacuum, favoring thus combustion inside said chamber 4.
- the base 6 of the combustion chamber 4 is distant from the reflector 3 so as to create an insulating space E between base 6 and reflector 3.
- this base 6 is suspended from the duct 2 of the burner via spacers 15 and flanges. It is also secured to the wall defining the duct 2 of the burner in a sealed manner.
- This base 6 is arranged in the end part of the duct 2 of the burner as shown in the figures. The role of the insulating space E will be described below.
- the reflector 3 consists of a bottom 8, preferably flat, extended by a straight wall 9 inclined.
- This straight wall 9 is preferably perpendicular to the plane of the perforated peripheral wall 7 of the combustion chamber 4, to widen the projected radiant flux. Indeed, we know that the most effective radiation is that which is emitted perpendicular to the surface which emits it. Consequently, if we refer to the peripheral wall 7 of the combustion chamber 4, the fact that the wall 9 of the reflector 3 is disposed substantially parallel to the radiation emitted allows the reflector 3 not to interfere with this radiation. This results in maximum heating efficiency.
- this reflector is shaped so as to cover only between 40 and 60% of the height of the combustion chamber 4.
- the burner said to be of the torch type, is, as has been specified above, constituted by an air / gas mixture duct opening into a combustion chamber 4.
- the outlet of this air / gas mixture can be provided with a grate conventional flame arrestor disposed at the outlet of the burner pipe 2 inside the combustion chamber 4.
- This diffusion chamber 10 is formed of a perforated wall 11 having a solid bottom 12, preferably in the shape of a dome, to avoid fouling of the chamber by accumulation of residues.
- This chamber is called diffusion chamber 10 because no combustion takes place there.
- the diffusion chamber 10 is of generally cylindrical shape, the bottom of the cylinder corresponding to the solid bottom 12.
- the upper face of this cylinder is open and communicates with the pipe 2 of the burner.
- the upper edge of this cylinder corresponding to the upper edge of the wall 11 is secured, preferably by overlap, to the base 6 of the combustion chamber 4.
- the operating principle of such a heating device is as follows.
- the heating device being assumed to be on, this ignition having been carried out by means of a flame presented in the vicinity of the combustion chamber 4, the gas is conveyed by an injection pipe to the injector 14, then through the venturi. 13 and the air / gas mixture is projected into the main combustion chamber 4, after diffusion by the diffusion chamber 10, where the presence of the flame causes its combustion.
- the appropriate heating regime is obtained by varying the gas flow, this variation in the gas flow being obtained by varying the pressure at the gas inlet.
- the non-ignited air / gas mixture is sprayed outside the diffusion chamber 10 through the perforations in the wall 11 of the latter.
- the air / gas mixture thus projected enters into combustion between the wall 11 of the diffusion chamber 10 and the wall 7 of the combustion chamber 4.
- the latter is then brought to red over its entire surface.
- the projection force of the combustion mixture decreases.
- the combustion is lower between the combustion chamber 4 and the diffusion chamber 10 and approaches the wall 11 of the diffusion chamber 10.
- This wall 11 therefore turns red and becomes the infrared and light emitter at low speed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Zoology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Birds (AREA)
- Drying Of Solid Materials (AREA)
- Solid-Fuel Combustion (AREA)
- Resistance Heating (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Air-Conditioning For Vehicles (AREA)
- Housing For Livestock And Birds (AREA)
- Greenhouses (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002288079A CA2288079A1 (fr) | 1997-05-23 | 1998-05-19 | Appareil de chauffage |
DE69802936T DE69802936T2 (de) | 1997-05-23 | 1998-05-19 | Heizgerät |
EP98925737A EP0998648B1 (fr) | 1997-05-23 | 1998-05-19 | Appareil de chauffage |
AT98925737T ATE210799T1 (de) | 1997-05-23 | 1998-05-19 | Heizgerät |
BR9809233-2A BR9809233A (pt) | 1997-05-23 | 1998-05-19 | Aparelho de aquecimento. |
US09/424,357 US6199547B1 (en) | 1997-05-23 | 1999-05-19 | Heating apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/06319 | 1997-05-23 | ||
FR97/06320 | 1997-05-23 | ||
FR9706320A FR2763667B1 (fr) | 1997-05-23 | 1997-05-23 | Bruleur, en particulier pour dispositif de chauffage suspendu |
FR9706319A FR2763670B1 (fr) | 1997-05-23 | 1997-05-23 | Appareil de chauffage au gaz, notamment pour les batiments d'elevage |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998053249A1 true WO1998053249A1 (fr) | 1998-11-26 |
Family
ID=26233549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000990 WO1998053249A1 (fr) | 1997-05-23 | 1998-05-19 | Appareil de chauffage |
Country Status (7)
Country | Link |
---|---|
US (1) | US6199547B1 (fr) |
EP (1) | EP0998648B1 (fr) |
AT (1) | ATE210799T1 (fr) |
CA (1) | CA2288079A1 (fr) |
DE (1) | DE69802936T2 (fr) |
ES (1) | ES2169524T3 (fr) |
WO (1) | WO1998053249A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6461150B1 (en) * | 1999-10-29 | 2002-10-08 | Centre D'etude Et De Realisation D'equipment Et De Materiel (Cerem) | Very low pressure gas-fired overhead radiant heater with atmospheric primary air supply by means of a venturi |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2810284B1 (fr) * | 2000-06-20 | 2002-09-06 | Valeo Securite Habitacle | Antivol de colonne de direction muni de moyens de blocage du pene |
FR2855868B1 (fr) * | 2003-06-04 | 2005-08-19 | Ct D Etude Et De Realisation D | Bruleur a gaz perfectionne comportant des moyens de commande thermoelectrique incluant un thermocouple interne |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2336816A (en) * | 1941-08-13 | 1943-12-14 | Peerless Mfg Corp | Gas heater |
US2985137A (en) * | 1958-09-09 | 1961-05-23 | Bright Leaf Ind Inc | Chicken brooder |
FR1387132A (fr) * | 1962-12-11 | 1965-01-29 | Hupp Corp | Perfectionnement au chauffage par rayonnement infra-rouge |
CH432770A (fr) * | 1963-09-03 | 1967-03-31 | Hupp Corp | Dispositif de chauffage |
EP0059153A1 (fr) * | 1981-02-23 | 1982-09-01 | Application Des Gaz | Appareil d'éclairage à gaz |
DE3727425A1 (de) * | 1987-08-17 | 1989-03-02 | Kreis Truma Geraetebau | Gasleuchtenarmatur, insbesondere fuer haengeleuchten |
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 |
EP0686808A1 (fr) * | 1994-06-06 | 1995-12-13 | Joh. Vaillant GmbH u. Co. | Brûleur radiant cylindrique |
DE29610358U1 (de) * | 1996-06-13 | 1997-01-09 | HTK-Heiztechnik Heizanlagen für den Straßenbau Inh. Franziska Kolb, 90571 Schwaig | Brennerkerze für Infrarotstrahler |
CH687938A5 (de) * | 1992-11-25 | 1997-03-27 | Ygnis Holding Sa | Brenner fuer gasfoermige Brennstoffe mit zylinderfoermigem Brennerrohr. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1508280A (fr) * | 1966-11-15 | 1968-01-05 | Applic Gaz Sa | Perfectionnements aux brûleurs à gaz, notamment pour feux doux |
US3975140A (en) * | 1974-08-28 | 1976-08-17 | International Magna Corporation | Space heater |
US4452225A (en) * | 1983-06-14 | 1984-06-05 | Plant David F | Portable, auxiliary, radiant chimney effect heater |
-
1998
- 1998-05-19 EP EP98925737A patent/EP0998648B1/fr not_active Expired - Lifetime
- 1998-05-19 ES ES98925737T patent/ES2169524T3/es not_active Expired - Lifetime
- 1998-05-19 CA CA002288079A patent/CA2288079A1/fr not_active Abandoned
- 1998-05-19 AT AT98925737T patent/ATE210799T1/de not_active IP Right Cessation
- 1998-05-19 WO PCT/FR1998/000990 patent/WO1998053249A1/fr active IP Right Grant
- 1998-05-19 DE DE69802936T patent/DE69802936T2/de not_active Expired - Lifetime
-
1999
- 1999-05-19 US US09/424,357 patent/US6199547B1/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2336816A (en) * | 1941-08-13 | 1943-12-14 | Peerless Mfg Corp | Gas heater |
US2985137A (en) * | 1958-09-09 | 1961-05-23 | Bright Leaf Ind Inc | Chicken brooder |
FR1387132A (fr) * | 1962-12-11 | 1965-01-29 | Hupp Corp | Perfectionnement au chauffage par rayonnement infra-rouge |
CH432770A (fr) * | 1963-09-03 | 1967-03-31 | Hupp Corp | Dispositif de chauffage |
EP0059153A1 (fr) * | 1981-02-23 | 1982-09-01 | Application Des Gaz | Appareil d'éclairage à gaz |
DE3727425A1 (de) * | 1987-08-17 | 1989-03-02 | Kreis Truma Geraetebau | Gasleuchtenarmatur, insbesondere fuer haengeleuchten |
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 |
CH687938A5 (de) * | 1992-11-25 | 1997-03-27 | Ygnis Holding Sa | Brenner fuer gasfoermige Brennstoffe mit zylinderfoermigem Brennerrohr. |
EP0686808A1 (fr) * | 1994-06-06 | 1995-12-13 | Joh. Vaillant GmbH u. Co. | Brûleur radiant cylindrique |
DE29610358U1 (de) * | 1996-06-13 | 1997-01-09 | HTK-Heiztechnik Heizanlagen für den Straßenbau Inh. Franziska Kolb, 90571 Schwaig | Brennerkerze für Infrarotstrahler |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6461150B1 (en) * | 1999-10-29 | 2002-10-08 | Centre D'etude Et De Realisation D'equipment Et De Materiel (Cerem) | Very low pressure gas-fired overhead radiant heater with atmospheric primary air supply by means of a venturi |
US6612834B2 (en) * | 1999-10-29 | 2003-09-02 | Centre D'etude Et De Realisation D'equipment Et De Materiel | Very low pressure gas-fired overhead radiant heater with atmospheric primary air supply by means of a venturi |
Also Published As
Publication number | Publication date |
---|---|
EP0998648A1 (fr) | 2000-05-10 |
DE69802936T2 (de) | 2002-08-08 |
US6199547B1 (en) | 2001-03-13 |
CA2288079A1 (fr) | 1998-11-26 |
ATE210799T1 (de) | 2001-12-15 |
DE69802936D1 (de) | 2002-01-24 |
EP0998648B1 (fr) | 2001-12-12 |
ES2169524T3 (es) | 2002-07-01 |
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