EP0428646B1 - Appareil de chauffage a catalyse pour combustible gazeux - Google Patents

Appareil de chauffage a catalyse pour combustible gazeux Download PDF

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Publication number
EP0428646B1
EP0428646B1 EP90906837A EP90906837A EP0428646B1 EP 0428646 B1 EP0428646 B1 EP 0428646B1 EP 90906837 A EP90906837 A EP 90906837A EP 90906837 A EP90906837 A EP 90906837A EP 0428646 B1 EP0428646 B1 EP 0428646B1
Authority
EP
European Patent Office
Prior art keywords
partition
seat
edge
reflector
wall
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 - Lifetime
Application number
EP90906837A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0428646A1 (fr
Inventor
Michèle JAVET
Claudio Javet
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.)
Radiamon SA
Original Assignee
Radiamon SA
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 Radiamon SA filed Critical Radiamon SA
Priority to AT90906837T priority Critical patent/ATE91537T1/de
Publication of EP0428646A1 publication Critical patent/EP0428646A1/fr
Application granted granted Critical
Publication of EP0428646B1 publication Critical patent/EP0428646B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23D14/18—Radiant burners using catalysis for flameless combustion
    • 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

Definitions

  • the present invention relates to a catalytic heating apparatus for gaseous fuel comprising a combustion cell having a rear wall traversed by a fuel gas supply duct and in which is embedded a front wall formed by a porous refractory substance impregnated with an oxidation catalyst, a reflector extending in front of this front wall and an annular nozzle connected to an air supply source surrounding its periphery.
  • the object of the present invention is precisely to provide a solution which makes it possible to reduce the machining costs of the components of the apparatus as well as those of its assembly.
  • the subject of the present invention is a catalytic heating apparatus for gaseous fuel according to claim 1.
  • the catalytic heater, object of the invention can be produced at a very competitive price, despite the high cost of the catalyzed combustion cell whose porous refractory substrate is impregnated with platinum.
  • the single figure of the appended drawing illustrates, schematically and by way of example, an embodiment of the catalytic heating apparatus according to the present invention.
  • This heating appliance comprises a combustion cell 1 comprising a circular rear wall 2 made of stamped aluminum sheet, provided with a tubular central column 3.
  • a porous refractory substrate 4 for example a layer of ceramic fibers impregnated with the substance playing the role of oxidation catalyst, here platinum, is arranged around the central tubular column 3 and rests on a support grid retained by a ring 5 driven on this column.
  • the periphery of this substrate 4 which forms a cone, presses against an annular bearing 2a formed on the rear wall 2.
  • This substrate is applied against this bearing 2a by a split ring 6 inserted between the curved edge of the wall 2 and the mesh of support.
  • the rear wall 2 is still crossed by a conduit 7 connected by an injector and a solenoid valve 8 to a source of combustible gas (not shown), such as propane.
  • This cell is mounted by means of spacers 9 between two semicircular parts formed by two curved aluminum profiles 10.
  • the spacers 9 each have a positioning lug 9a which is driven into an opening in the profile 10.
  • these profiles form on the one hand a reflector 11 extending in front of the front wall of the combustion cell 1 formed by the refractory substrate 4 impregnated with the catalyst and, on the other hand, the edge of this reflector 11 which is adjacent to the rest of the profile 10 forms with the curved edge of the rear wall 2 of the cell 1 an annular nozzle 12 whose dimension is defined by the spacers 9.
  • the thickness of these spacers decreases towards the annular nozzle 12 for increase the speed of flow.
  • the free edge of the profile 10 forms a seat for a circular partition 13, the center of which has an opening 14 surrounded by threaded tubes 15 for fixing a fan 16.
  • Another profile 17, in the form of a split ring, has an edge in the form of an annular groove 18 open towards the inside which receives both the free edge of the profiles 10 and that of the partition 13.
  • the two ends of the split ring of the profile 17 are held contiguous by fixing rivets 19 forming a kind of flange which holds the profiles 10 and the partition 13 together as well as the cell 1, thanks to the spacers 9.
  • a closed channel 2o connects the annular nozzle 12 to the outlet of the fan 16. As noted, the section of this channel gradually decreases from the center to the periphery in order to increase the speed of the air.
  • a screw 21 is fixed by a nut 22 through the partition 13. This screw carries a support 23 of the electronic control circuit 24 of the device. Since the regulation of the device is outside the scope of the present invention, it is not useful for its understanding that this electronic circuit is represented and described here.
  • the device as it is composed in the description which has been made so far, could work.
  • an air filtering compartment has been provided, as an option, in order to protect the fan and the regulation of the dust.
  • the edge of the profile 17 opposite to that which serves as a fixing flange thanks to its annular groove 18 has a peripheral seat 25 extending outwards and surrounded by a flange 26.
  • a filter is arranged in this compartment and is formed by two annular filter layers 27, 28 joined by their respective internal edges. Their outer edges are separated by a spacer ring 29 pierced with openings 30 for the passage of air.
  • a grid circular 31a is disposed on the annular seat 25 and the outer edge of the filter layer 27 is taken between the lower edge of the spacer ring 29 and this grid 31a.
  • the outer edge of the other filter layer 28 is taken between the upper edge of the spacer ring and another circular grid 31b housed in a cover 32.
  • Clamping clips 33 serve to elastically fix the cover under the seat 25 of the profile 17. This arrangement with double filtering layer allows the air to pass up and down, thus increasing the filtering surface and therefore the life of the filter. The air which passes through the lower layer also serves to cool the electronic and mechanical components located in the compartment located inside the profile 17.
  • the combustible gas which may or may not be directly mixed with air, is introduced into the combustion cell 1 through the duct 7.
  • the refractory substrate 4 impregnated with the substance serving as an oxidation catalyst, is brought to a temperature sufficient for the catalytic reaction of the combustible gas to occur.
  • an electrical resistance not shown, can be incorporated in the substrate 4 to heat it.
  • fresh air sucked in by the fan 16 is sent by the annular nozzle 12 against the surface of the refractory substrate 4. This air can also be used for the catalytic reaction in the event that the combustible gas is not previously mixed with the air.
  • the air leaving the annular nozzle 12 is mainly used for mixing with the hot combustion gases, for heating by convection, in addition to the radiation heating produced by the incandescent refractory substrate.
  • This air is already heating by circulating in the channel 20 and also serves to cool the rear face of the combustion cell and thus protect the compartment located inside the profile 17 and which contains the regulating and control members of the 'heating appliance.
  • a simple hammer blow allows to drive it into this hole in the profile 10 and thus keep it in the desired position.
  • the only machining operations to perform are cutting, drilling and bending operations.
  • the entire rear wall 2 of the combustion cell is ventilated by fresh air so that maximum heat is thus recovered and sent towards the front of the appliance which is generally directed downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gas Burners (AREA)
EP90906837A 1989-05-23 1990-05-23 Appareil de chauffage a catalyse pour combustible gazeux Expired - Lifetime EP0428646B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90906837T ATE91537T1 (de) 1989-05-23 1990-05-23 Katalytisches heizgeraet fuer gasfoermigen brennstoff.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1930/89 1989-05-23
CH1930/89A CH678885A5 (ja) 1989-05-23 1989-05-23

Publications (2)

Publication Number Publication Date
EP0428646A1 EP0428646A1 (fr) 1991-05-29
EP0428646B1 true EP0428646B1 (fr) 1993-07-14

Family

ID=4221918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906837A Expired - Lifetime EP0428646B1 (fr) 1989-05-23 1990-05-23 Appareil de chauffage a catalyse pour combustible gazeux

Country Status (9)

Country Link
US (1) US5261812A (ja)
EP (1) EP0428646B1 (ja)
JP (1) JPH04500719A (ja)
CA (1) CA2033186A1 (ja)
CH (1) CH678885A5 (ja)
DE (1) DE69002221T2 (ja)
ES (1) ES2044579T3 (ja)
RU (1) RU2065549C1 (ja)
WO (1) WO1990014557A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766276A (en) * 1989-06-27 1998-06-16 Radiamon S.A. Method for supplying natural gas to a catalytic burner and device for implementing said method
FR2680867B1 (fr) * 1991-09-02 1998-04-03 Pierre Chaussonnet Systeme pour l'utilisation de panneaux radiants catalytiques pour le chauffage d'enceintes sous vide.
EP0657692B1 (de) * 1993-12-06 2000-02-02 Papst-Motoren Gmbh & Co. Kg Brennergebläse für Gas-Vormischbrenner
DE69604070T2 (de) * 1996-10-03 2000-02-17 Siabs Industry S R L Vorrichtung zum Zuführen eines Gas/Luft-Gemisches zu einem Brenner, insbesondere für Heizungsanlagen
DE19919293C1 (de) * 1999-04-28 2000-11-23 Joachim Wuenning Hochtemperatur-Gaserhitzer
DE10029148A1 (de) * 2000-06-14 2001-12-20 Dietrich Schroeck Strahlungsheizgerät
US20060183066A1 (en) * 2005-02-17 2006-08-17 Eichenlaub John E Sealed combustion gas-fired infrared heater
EP2177852B1 (en) * 2008-10-15 2012-02-01 Symach S.r.l. Apparatus for drying a painting product and operating method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187339B (de) * 1960-10-05 1965-02-18 Heinz Goch Einrichtung zur flammenlosen Verbrennung von gasfoermigen Kohlenwasserstoffen
US3099258A (en) * 1960-10-26 1963-07-30 Calinter S A Soc Catalytic heating apparatus
US3237679A (en) * 1962-01-11 1966-03-01 Thermal Engr Corp Radiant burner with vented burner surface
US3359965A (en) * 1965-10-23 1967-12-26 Milligan William Cecil Radiant heaters
US3805763A (en) * 1972-08-21 1974-04-23 E Cowan Flush-mountable, self-cooling gas-fired heater
CH580255A5 (ja) * 1974-06-04 1976-09-30 Calinter Sa
US4189297A (en) * 1977-10-26 1980-02-19 Slyman Manufacturing Corporation Matrix mounting means for gas burners
US4634373A (en) * 1985-09-24 1987-01-06 David Rattner Gas-fired radiant heater
US4666400A (en) * 1986-05-05 1987-05-19 Vigneau David L Radiant gas burner

Also Published As

Publication number Publication date
JPH04500719A (ja) 1992-02-06
CH678885A5 (ja) 1991-11-15
DE69002221D1 (de) 1993-08-19
EP0428646A1 (fr) 1991-05-29
WO1990014557A1 (fr) 1990-11-29
ES2044579T3 (es) 1994-01-01
DE69002221T2 (de) 1994-02-10
US5261812A (en) 1993-11-16
CA2033186A1 (fr) 1990-11-24
RU2065549C1 (ru) 1996-08-20

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