EP3693665B1 - Ofen mit versetztem wärmetauscher - Google Patents

Ofen mit versetztem wärmetauscher Download PDF

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Publication number
EP3693665B1
EP3693665B1 EP20155954.9A EP20155954A EP3693665B1 EP 3693665 B1 EP3693665 B1 EP 3693665B1 EP 20155954 A EP20155954 A EP 20155954A EP 3693665 B1 EP3693665 B1 EP 3693665B1
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EP
European Patent Office
Prior art keywords
combustion
stove
frame
air
combustion chamber
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EP20155954.9A
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English (en)
French (fr)
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EP3693665A1 (de
Inventor
Yann DENANCE
Kevin PAULIN
Elodie FAIVRE
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Inovalp
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Inovalp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B7/00—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating 
    • F24B7/04—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with internal air ducts
    • F24B7/045—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating  with internal air ducts with forced circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/024—Closed stoves for pulverulent fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F24B1/1885—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only
    • F24B1/1888—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only with forced circulation

Definitions

  • the invention relates to the technical field of stoves, in particular pellet stoves. More specifically, the invention relates to stoves of the fireplace-stove type where it is possible to observe the fire as in a fireplace.
  • the power supply module comprises walls delimiting a solid fuel storage space (p.3, 1.28-30).
  • the combustion module and the supply module are separate modules, without being wrapped in a common casing.
  • a stove of the state of the art comprises a dedicated protective wall panel, distinct from a covering wall, and arranged between the combustion module and the walls delimiting the storage space.
  • the wall panel can be mounted on the front wall of the storage space (p.13, 1.14-15; fig.4 ).
  • the wall panel can form the front wall of the storage space (p.13, 1.10-12; fig.5 ).
  • the protective wall panel is designed to protect the wall but also the storage space, and therefore the fuel, from the heat radiated by the combustion module via its rear face (p.3, 1.20-24).
  • Such a stove of the state of the art is not entirely satisfactory insofar as the protective wall panel can turn out to be bulky and complicates the design of the stove, in particular when the wall panel forms the front wall of the stove. storage space.
  • the bulky appearance of the protective wall panel can also weigh down the aesthetics depending on the nature of the room to be heated.
  • the document WO 2016/207395 A1 discloses a stove with a supply duct for a solid fuel stove, adapted to be installed between a solid fuel supply module and a combustion module of said solid fuel.
  • the sheath comprises a supply duct for supplying the combustion module with solid fuel, an air intake duct for supplying the combustion module with air, and a smoke evacuation duct for discharging to the combustion module. feeding the fumes emitted by the combustion. At least a part of the air intake duct is interposed between the supply duct and the smoke evacuation duct.
  • the fuel tank has its own walls, distinct from the future covering walls of the frame which will for example be mounted on the frame when installing the stove in a room to be heated.
  • a stove according to the invention also makes it possible to dispense with a protective wall panel forming a wall of the fuel tank, which simplifies the design of the stove.
  • the part of the supply tube and the part of the exhaust tube are concealed in the spacing area.
  • Such a stove according to the invention makes it possible to deport the fuel tank, the evacuation duct and the heat exchanger outside the combustion chamber, which allows an aesthetic break making it possible to focus on the flame.
  • the convection function is separated from the radiation function.
  • the stove according to the invention may comprise one or more of the following characteristics.
  • the circulation means are arranged to draw ambient air from the room to be heated towards the heat exchanger.
  • an advantage obtained is to obtain diffusion of the heat by forced convection.
  • an advantage obtained is to purify the combustion chamber by concealing the technical parts (combustive air supply duct, smoke evacuation duct) in the frame, in order to focus on the flame.
  • the part of the combustion air supply tube is concealed in the spacing zone.
  • the part of the combustion air supply tube extends in the space zone below the part of the supply tube and above the part of the evacuation tube.
  • an advantage obtained is to avoid heating the fuel present in the supply tube by thermal radiation emitted by the evacuation tube, by interposing the combustion air supply tube.
  • an advantage obtained is to heat the combustion air present in the combustion air supply tube by thermal radiation emitted by the evacuation tube, which increases the efficiency.
  • the fixing means comprise the supply tube, the evacuation tube and the combustion air supply tube.
  • an advantage obtained is to obtain satisfactory mechanical strength of the enclosure without requiring additional dedicated fixing means.
  • the combustion air supply duct and the exhaust duct are coaxial.
  • an advantage obtained is to reduce the size of the stove.
  • the armature has a mass adapted to support the combustion chamber; the combustion chamber and the armature each comprising a base; and the fixing means are arranged to suspend the base of the combustion enclosure above the base of the armature.
  • an advantage obtained is to suspend the enclosure and to dispense with feet to support it.
  • the armature extends along a vertical axis
  • the supply tube extends along a direction oblique to the vertical axis so as to supply the burner with fuel by gravity.
  • an advantage obtained is to obtain easy guidance of the fuel towards the burner.
  • the frame comprises at least one side hatch.
  • an advantage obtained is to facilitate the maintenance of the stove.
  • the armature comprises a base, intended to rest on a floor of the room to be heated, and made of an elastic material.
  • an advantage obtained is to reduce any vibrations caused by technical elements present in the frame, for example the motors of the suction means.
  • the first opening is located above the combustion enclosure; the second opening is located below the combustion enclosure; and the circulation means are arranged to draw ambient air from the first opening to the second opening via the heat exchanger.
  • an advantage procured by such forced convection is to obtain a destratification of the ambient air by moving the ambient air from an upper part to a lower part.
  • the stove comprises a deflector arranged to deflect the ambient air leaving the second opening downwards.
  • an advantage obtained is to improve the destratification of the ambient air.
  • the room to be heated comprises a floor and a ceiling, and the covering walls extend from the floor to the ceiling.
  • an advantage obtained is to be able to adapt the dimensions of the covering walls to the dimensions of the part to be heated.
  • the room to be heated comprises a wall, and the frame is embedded in the wall or is affixed against the wall.
  • the frame 2 is advantageously made of a metallic material.
  • the frame 2 may comprise a set of uprights and crosspieces arranged to support the stove 1.
  • the frame 2 advantageously has a mass adapted to support the enclosure 3 of combustion.
  • the mass of frame 2 can be adapted so that frame 2 is self-supporting.
  • the frame 2 comprises a base 20, intended to rest on a floor of the room to be heated.
  • the base 20 of the armature 2 is advantageously made of an elastic material, for example a rubber.
  • the base 20 of the armature 2 may include pads made from the elastic material.
  • the armature 2 preferably extends along a vertical axis.
  • the frame 2 advantageously comprises at least one side hatch 21.
  • the frame 2 may have no trim walls 9.
  • the trim walls 9 can be mounted on the frame 2 when the stove 1 is installed in a room to be heated.
  • the armature 2 and the combustion chamber 3 do not have a common casing.
  • combustion air A can be taken directly from the room to be heated so as to circulate directly in the combustion air A supply tube 8.
  • Part 80 of combustion air supply tube 8 A advantageously extends in spacing zone ZE below part 50 of supply tube 5 and above part 60 of exhaust tube 6.
  • the supply duct C a of combustion air A and the exhaust duct C e are coaxial. More specifically, the supply duct C a of combustion air A and the exhaust duct C e advantageously comprise coaxial upper parts.
  • the combustion enclosure 3 comprises a base 31, preferably suspended, that is to say extending above the floor of the room to be heated.
  • the combustion enclosure 3 comprises at least one window 32 arranged to observe the flame.
  • the stove 1 advantageously comprises a first layer of thermal insulation mounted outside the combustion chamber 3, arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE ) of the combustion chamber 3.
  • the stove 1 advantageously comprises a second layer of thermal insulation mounted inside the combustion enclosure 3, and arranged so as to reduce the flow of thermal radiation transmitted by the rear face (i.e. oriented towards the spacing zone ZE) of the combustion enclosure 3.
  • the fuel tank 4 C is fixed to the frame 2.
  • the fuel tank 4 comprises walls 40 forming an enclosure adapted to contain solid fuels C, preferably wood pellets.
  • Stove 1 may include a layer of thermal insulation or an air gap arranged around fuel tank 4 C.
  • the fixing means advantageously comprise the supply tube 5, the evacuation tube 6 and the supply tube 8 of combustion air A. More specifically, the fixing means advantageously comprise the part 50 of the supply tube 5, the part 60 of the evacuation tube and the part 80 of the supply tube 8 of combustion air A, arranged to ensure the mechanical connection between the frame 2 and the enclosure 3 of combustion.
  • the fixing means are advantageously arranged to suspend the base 31 of the combustion enclosure 3 above the base 20 of the armature 2.
  • the supply tube 5 extends in an oblique direction with respect to the vertical axis of the frame 2 so as to supply the burner 30 with fuel C by gravity.
  • the supply tube 5 is advantageously connected to the fuel tank 4 C by means of an endless screw 51 making it possible to meter the supply of fuel C.
  • the heat exchanger 7 can be a tube exchanger 71.
  • the combustion fumes F circulate in the heat exchanger 7 so as to exchange calories with the ambient air of the room to be heated circulating in the receiving volume.
  • the evacuation tube 6 advantageously comprises a first portion arranged to evacuate the combustion fumes F from the combustion chamber 3 towards the heat exchanger 7.
  • the evacuation tube 6 advantageously comprises a second portion arranged to receive the combustion fumes F exiting from the heat exchanger 7 in order to evacuate them towards the evacuation duct C e .
  • the circulation means may comprise ventilation ducts (not shown for the sake of readability) arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger 7.
  • the circulation means are advantageously arranged to suck the ambient air from the room to be heated towards the heat exchanger 7.
  • the circulation means advantageously comprise a suction member 70 arranged to suck the ambient air from the part to be heated to the heat exchanger 7.
  • the circulation means are arranged to circulate the ambient air from the first opening to the second opening 90 via the heat exchanger 7.
  • the first opening is advantageously located above the combustion chamber 3.
  • the term "above” means in orthogonal projection on the covering wall 9 where the first opening is formed.
  • the second opening 90 is advantageously located below the enclosure 3 of combustion.
  • the term “below” means an orthogonal projection on the covering wall 9 where the second opening is formed.
  • the circulation means are advantageously arranged to draw ambient air from the first opening to the second opening 90 via the heat exchanger 7 in order to obtain forced convection.
  • the first opening is located below the combustion enclosure 3 and the second opening 90 is located above the combustion enclosure 3.
  • the circulation means then allow natural convection of the ambient air from the first opening to the second opening 90 via the heat exchanger 7.
  • the stove 1 advantageously comprises a deflector (not shown) arranged to deflect the ambient air leaving the second opening 90 downwards.
  • the room to be heated has a floor and a ceiling, and the covering walls 9 advantageously extend from floor to ceiling.
  • the room to be heated comprises a wall, and the frame 2 is advantageously embedded in the wall or is advantageously affixed against the wall.
  • the stove 1 comprises an additional heat exchanger, arranged in the combustion chamber 3, upstream of the second opening, to transfer the thermal energy of the combustion fumes F to the ambient air exiting from the heat exchanger 7.
  • the stove 1 comprises a connecting tube, arranged to connect the ambient air leaving the heat exchanger 7 to the additional heat exchanger.
  • the connecting tube makes it possible to connect the reception volume, delimited by the frame 2, to the enclosure 3 of combustion.
  • the circulation means are arranged to circulate the ambient air of the room to be heated in the reception volume via the heat exchanger 7.
  • the circulation means are also arranged to circulate the ambient air leaving the heat exchanger 7 to the additional heat exchanger via the connection pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Air Supply (AREA)

Claims (15)

  1. Ofen (1), der Folgendes umfasst:
    - ein Gestell (2), das ein Aufnahmevolumen begrenzt;
    - einen Verbrennungsraum (3), der außerhalb des Aufnahmevolumens angeordnet ist und einen Brenner (30) beinhaltet, der mit Verbrennungsluft (A) beaufschlagt wird, um eine Flamme zu produzieren;
    - einen Behälter (4) für Brennstoff (C), der in dem Aufnahmevolumen angeordnet ist;
    - Befestigungsmittel, die dazu angeordnet sind, den Verbrennungsraum (3) an dem Gestell (2) zu befestigen, sodass zwischen dem Verbrennungsraum (3) und dem Gestell (2) eine Abstandszone (ZE) verbleibt;
    - ein Zuführrohr (5), das einen Abschnitt (50) beinhaltet, der sich in der Abstandzone (ZE) erstreckt, und dazu angeordnet ist, den Behälter (4) für Brennstoff (C) mit dem Verbrennungsraum (3) zu verbinden, um dem Brenner (30) Brennstoff (C) zuzuführen;
    - eine Abführleitung (Ce), die in dem Aufnahmevolumen angeordnet ist, um Verbrennungsgase (F) aus dem Gestell (2) abzuführen;
    - ein Abführrohr (6), das einen Abschnitt (60) beinhaltet, der sich in der Abstandzone (ZE) erstreckt, und dazu angeordnet ist, den Verbrennungsraum (3) mit der Abführleitung (Ce) zu verbinden, um die Verbrennungsgase (F) aus dem Verbrennungsraum (3) abzuführen;
    dadurch gekennzeichnet, dass der Ofen ferner Folgendes umfasst:
    - einen Wärmetauscher (7), der in dem Aufnahmevolumen angeordnet ist, um die Wärmeenergie der Verbrennungsgase (F) an eine Umgebungsluft eines zu erwärmenden Raumes, die in dem Aufnahmevolumen zirkuliert, zu übertragen;
    - Zirkulationsmittel, die dazu angeordnet sind, die Umgebungsluft des zu erwärmenden Raumes in dem Aufnahmevolumen über den Wärmetauscher (7) zirkulieren zu lassen.
  2. Ofen (1) nach Anspruch 1, wobei die Zirkulationsmittel dazu angeordnet sind, die Umgebungsluft des zu erwärmenden Raumes zu dem Wärmetauscher (7) hin anzusaugen.
  3. Ofen (1) nach Anspruch 1 oder 2, der Folgendes umfasst:
    - eine Leitung zur Beaufschlagung (Ca) mit Verbrennungsluft (A), die in dem Aufnahmevolumen angeordnet ist;
    - ein Rohr zur Beaufschlagung (8) mit Verbrennungsluft (A), das einen Abschnitt (80) beinhaltet, der sich in der Abstandszone (ZE) erstreckt, und dazu angeordnet ist, die Leitung zur Beaufschlagung (Ca) mit Verbrennungsluft (A) mit dem Verbrennungsraum (3) zu verbinden, um den Brenner (30) mit Verbrennungsluft (A) zu beaufschlagen.
  4. Ofen (1) nach Anspruch 3, wobei sich der Abschnitt (80) des Rohrs zur Beaufschlagung (8) mit Verbrennungsluft (A) in der Abstandszone (ZE) unterhalb des Abschnitts (50) des Zuführrohrs (5) und oberhalb des Abschnitts (60) des Abführrohrs (6) erstreckt.
  5. Ofen (1) nach Anspruch 3 oder 4, wobei die Befestigungsmittel das Zuführrohr (5), das Abführrohr (6) und das Rohr zur Beaufschlagung (8) mit Verbrennungsluft (A) umfassen.
  6. Ofen (1) nach einem der Ansprüche 3 bis 5, wobei die Leitung zur Beaufschlagung (Ca) mit Verbrennungsluft (A) und die Abführleitung (Ce) koaxial sind.
  7. Ofen (1) nach einem der Ansprüche 1 bis 6, wobei das Gestell (2) eine Masse besitzt, die dazu angepasst ist, den Verbrennungsraum (3) zu stützen; wobei der Verbrennungsraum (3) und das Gestell (2) jeweils einen Sockel (31, 20) umfassen; und wobei die Befestigungsmittel dazu angeordnet sind, den Sockel (31) des Verbrennungsraumes (3) oberhalb des Sockels (20) des Gestells (2) zu halten.
  8. Ofen (1) nach einem der Ansprüche 1 bis 7, wobei sich das Gestell (2) gemäß einer vertikalen Achse erstreckt und sich das Zuführrohr (5) gemäß einer mit Bezug auf die vertikale Achse schrägen Richtung erstreckt, um dem Brenner (30) durch Schwerkraft Brennstoff (C) zuzuführen.
  9. Ofen (1) nach einem der Ansprüche 1 bis 8, wobei das Gestell (2) mindestens eine seitliche Klappe (21) umfasst.
  10. Ofen (1) nach einem der Ansprüche 1 bis 9, wobei das Gestell (2) einen Sockel (20) umfasst, der dazu bestimmt ist, auf einem Boden des zu erwärmenden Raumes zu stehen, und aus einem elastischen Material gefertigt ist.
  11. Anlage, die Folgendes umfasst:
    - einen Ofen (1) nach einem der Ansprüche 1 bis 10;
    - einen zu erwärmenden Raum, der eine Umgebungsluft aufweist und eine Kaminleitung beinhaltet, die an die Abführleitung (Ce) angeschlossen ist;
    - Verkleidungswände (9), die an dem Gestell (2) angebracht sind, wobei die Verkleidungswände (9) vorzugsweise Gipsplatten sind;
    - eine erste Öffnung, die in einer Verkleidungswand (9) gebildet ist und einen Eintritt der Umgebungsluft in das Aufnahmevolumen gestattet;
    - eine zweite Öffnung (90), die in einer Verkleidungswand (9) gebildet ist und einen Austritt der Umgebungsluft aus dem Aufnahmevolumen gestattet;
    und wobei die Zirkulationsmittel dazu angeordnet sind, die Umgebungsluft von der ersten Öffnung über den Wärmetauscher (7) zu der zweiten Öffnung (90) zirkulieren zu lassen.
  12. Anlage nach Anspruch 11, wobei sich die erste Öffnung oberhalb des Verbrennungsraumes (3) befindet; wobei sich die zweite Öffnung (90) unterhalb des Verbrennungsraumes (3) befindet; und wobei die Zirkulationsmittel dazu angeordnet sind, die Umgebungsluft von der ersten Öffnung über den Wärmetauscher (7) zu der zweiten Öffnung (90) hin anzusaugen.
  13. Anlage nach Anspruch 12, wobei der Ofen (1) einen Deflektor umfasst, der dazu angeordnet ist, die Umgebungsluft, die aus der zweiten Öffnung (90) austritt, nach unten hin umzuleiten.
  14. Anlage nach einem der Ansprüche 11 bis 13, wobei der zu erwärmende Raum einen Boden und eine Decke umfasst und sich die Verkleidungswände (9) von dem Boden zu der Decke erstrecken.
  15. Anlage nach einem der Ansprüche 11 bis 14, wobei der zu erwärmende Raum eine Wand umfasst und das Gestell (2) in die Wand eingelassen ist oder an der Wand angebracht ist.
EP20155954.9A 2019-02-09 2020-02-06 Ofen mit versetztem wärmetauscher Active EP3693665B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1901304A FR3092648B1 (fr) 2019-02-09 2019-02-09 Poêle à échangeur thermique déporté

Publications (2)

Publication Number Publication Date
EP3693665A1 EP3693665A1 (de) 2020-08-12
EP3693665B1 true EP3693665B1 (de) 2023-03-29

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EP20155954.9A Active EP3693665B1 (de) 2019-02-09 2020-02-06 Ofen mit versetztem wärmetauscher

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EP (1) EP3693665B1 (de)
FR (1) FR3092648B1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4200721C2 (de) * 1991-02-19 2002-11-28 Riener Karl Stefan Ofen für feste Brennstoffe, insbesondere für Pellets
ITVR20020001U1 (it) * 2002-01-10 2003-07-10 Gruppo Piazzetta Spa Stufa a pellet perfezionata
HUP0600848A2 (en) * 2006-11-16 2010-04-28 Fireplace Kft Fireplace with gravitational feeding for pellet
FR3038034B1 (fr) 2015-06-24 2019-04-26 Invicta Group Poele a combustible solide et module d'alimentation d'un tel poele
WO2016207395A1 (fr) * 2015-06-24 2016-12-29 Invicta Gaine d'alimentation pour poêle
ITUB20160756A1 (it) * 2016-02-15 2017-08-15 Thermorossi Spa Stufa o termo-stufa a pellet

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FR3092648A1 (fr) 2020-08-14
EP3693665A1 (de) 2020-08-12
FR3092648B1 (fr) 2021-02-12

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