EP3296641B1 - Offene feuerstelle mit einer rauchabzugshaube - Google Patents

Offene feuerstelle mit einer rauchabzugshaube Download PDF

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Publication number
EP3296641B1
EP3296641B1 EP16189521.4A EP16189521A EP3296641B1 EP 3296641 B1 EP3296641 B1 EP 3296641B1 EP 16189521 A EP16189521 A EP 16189521A EP 3296641 B1 EP3296641 B1 EP 3296641B1
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EP
European Patent Office
Prior art keywords
open
flue gas
gap
fire chamber
exhaust hood
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.)
Active
Application number
EP16189521.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3296641A1 (de
Inventor
Hubertus Brunner
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.)
Ulrich Brunner GmbH
Original Assignee
Ulrich Brunner GmbH
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 Ulrich Brunner GmbH filed Critical Ulrich Brunner GmbH
Priority to PL16189521T priority Critical patent/PL3296641T3/pl
Priority to EP16189521.4A priority patent/EP3296641B1/de
Publication of EP3296641A1 publication Critical patent/EP3296641A1/de
Application granted granted Critical
Publication of EP3296641B1 publication Critical patent/EP3296641B1/de
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Classifications

    • 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
    • F24B1/191—Component parts; Accessories
    • F24B1/195—Fireboxes; Frames; Hoods; Heat reflectors
    • F24B1/1955—Hoods
    • 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
    • F24B1/191—Component parts; Accessories
    • F24B1/195—Fireboxes; Frames; Hoods; Heat reflectors
    • F24B1/1957—Heat reflectors

Definitions

  • the invention relates to an open hearth with a smoke extractor hood for discharging flue gas from the open hearth, which is located above a furnace which has at least one at least temporarily open first side.
  • Open fires according to the invention are commonly known as "always open fireplaces".
  • An essential feature of these open hearths is that the fire burning there in a firebox is visible to a user of the open hearth.
  • This display of the fire is possible in that the open hearth has at least one open side on which there is no combustion chamber wall and which can at best be closed by means of a spark grid.
  • US 4886047 A teaches a simple, inexpensive and low-maintenance device that is built into a fireplace and uses convective and radiating means to increase heat transfer to living areas.
  • the invention is based on the object of creating an open fireplace in which it is ensured that flue gas does not escape from the furnace into the installation space of the open fireplace, even if the furnace has an at least temporarily open side.
  • an open hearth is created whose combustion chamber does not merge freely and openly into a smoke extraction hood on its combustion chamber ceiling, but instead has a weir surface by means of which the discharge of smoke gas from the furnace into the smoke extraction hood is limited to a gap.
  • this gap is not located on the back of the combustion chamber, close to a closed side, but rather on the open, first side.
  • the flue gases in the combustion chamber are therefore surprisingly directed with the weir surface to the open, first side instead of away from it.
  • the area for the outflow of flue gas from the furnace into the smoke extraction hood is reduced and the smoke extraction from the furnace is limited to the gap according to the invention.
  • the smoke extraction area being reduced in this way, there is an increased suction or negative pressure in the smoke to be discharged Smoke hood into it.
  • This increased negative pressure fresh air is also sucked in and this sucking in takes place right now near the open side of the combustion chamber.
  • the fresh air flow supplied in this way simultaneously prevents flue gas from escaping into the room where the open fireplace is located near the open side.
  • Flue gases that want to escape into the installation room are thus specifically sucked into the smoke extractor hood at the first gap according to the invention.
  • an additional flow resistance is generated with the weir surface according to the invention in the remaining transition area between the combustion chamber and the smoke extractor hood, which leads to an increased negative pressure near the open side and in particular along this open side.
  • the first gap has a constant width along the first side. With such a gap width, a uniform, increased suction of smoke gas is achieved over the entire extent of the open side.
  • the first gap has a width of between 3 cm and 10 cm, in particular between 5 cm and 8 cm.
  • the combustion chamber also advantageously has an open, second side and by means of the weir surface a second gap is released along the second side of the combustion chamber for discharging the flue gas from the combustion chamber into the smoke extractor hood.
  • the combustion chamber advantageously has an open, third side and, by means of the weir surface, a third gap is released along the third side of the combustion chamber for discharging the flue gas from the combustion chamber into the smoke extractor hood.
  • an open hearth is designed, the combustion chamber of which is open or can be opened on three sides. The fire in such a firebox can therefore also be seen from a total of three sides.
  • the combustion chamber furthermore advantageously has a closed side or rear side opposite the first side and the second and / or the third gap has a greater width near the closed side than near the first side.
  • the back of such a furnace is usually designed as a closed wall. Since the gap according to the invention is designed to be wider near this wall than near the open side, there is also a lower negative pressure at the gap near the wall. So less fresh air is supplied from the installation room near the wall than near the open side. In this way, the increased aspiration of smoke gas near the open side or sides, which is aimed at according to the invention, is additionally supported.
  • the second and / or the third gap near the closed side is twice to three times as wide as near the first side.
  • Such a design of the gap width has surprisingly turned out to be particularly advantageous in terms of flow.
  • the gap according to the invention preferably has a width of between 6 cm and 18 cm, in particular between 12 cm and 15 cm.
  • the gap preferably has a width of between 1 cm and 6 cm, in particular between 2 cm and 4 cm.
  • the second and / or the third gap is advantageously designed to taper continuously from the closed side towards the first side.
  • Such a continuous taper can be produced particularly inexpensively by an inclined edge of the weir surface according to the invention.
  • the weir surface is preferably designed as a plate which, in particular, is oriented essentially horizontally.
  • the plate is preferably largely flat.
  • the ceiling area of a combustion chamber is usually designed like a funnel that tapers in the direction of the smoke exhaust pipe.
  • the weir surface is preferably removably attached in the smoke extractor hood.
  • a weir surface can be used as an optional additional component in the open hearth according to the invention.
  • the weir surface can be removed for checking and cleaning the inside of the smoke extractor hood.
  • the weir surface is preferably formed from a firebrick material.
  • a fireclay material has a high resistance to high temperatures and at the same time a comparatively high heat storage capacity.
  • the weir surface made of fireclay according to the invention thus creates a heat store in the upper region of the associated furnace, which keeps the smoke gases flowing in there warm. This results in an advantageous thermal gradient for the outflowing flue gases.
  • the weir surface on the furnace ceiling which is so warm and emits thermal radiation, means that a fire burning underneath cools down less towards the top than before. This advantageously results in a higher burning temperature for the fire.
  • an open hearth 10 is shown which is provided with a furnace 12 for receiving a fire (not shown) burning there.
  • the essentially cuboid combustion chamber 12 has in relation to the Fig. 1 a rear wall or closed side 14, as well as a front or open first side 16, a right side or open second side 18 and a left side or open third side 20. Furthermore, the combustion chamber 12 is delimited at the bottom by a floor area 22.
  • a lifting device 24 is located above the combustion chamber 12, by means of which a spark grid arrangement 26 can be raised and lowered. In the lowered state, the spark grid arrangement 26 is then on the otherwise open first, second and third side 16, 18, 20.
  • the combustion chamber 12 of this type is therefore on by means of the lifting device 24 and the associated one three sides located spark grid assembly 26 to open and close selectively.
  • a fire burning in the combustion chamber 12 can be seen in particular when the spark grid arrangement 26 is raised.
  • Associated spark grids of the spark grid arrangement 26 are, however, generally designed to be transparent in such a way that the fire is visible even when the spark grid arrangement 26 is closed or lowered. Furthermore, even in the lowered state, air from the installation space of the open fireplace 10 can flow through the open sides 16, 18, 20 into the combustion chamber 12 through the spark grid.
  • a smoke extractor hood 28 is arranged above the furnace 12.
  • the smoke extraction hood 28 encloses a smoke extraction space which, starting from the combustion chamber 12, tapers upwards in the shape of a funnel to form a smoke extraction pipe 32.
  • a substantially horizontally arranged, plate-shaped and largely flat weir surface 34 is arranged between the combustion chamber 12 and the smoke extraction chamber 30.
  • the weir surface 34 thus forms a ceiling surface for the combustion chamber 12.
  • the weir surface 34 is designed at its edges in such a way that it extends at the rear up to the rear wall or closed side 14.
  • the weir surface 34 leaves a first gap 36 between the combustion chamber 12 and the smoke extraction chamber 30 open.
  • the weir surface 34 leaves a second gap 38 and a third gap 40 open along the right-hand side or open second side 18 and along the left-hand side or open third side 20 between the combustion chamber 12 and the smoke extraction chamber 30.
  • the weir surface 34 thus prevents, on the one hand, in the center and also on the rear of the combustion chamber 12, smoke gases from rising from the combustion chamber 12 into the smoke extraction chamber 30.
  • the weir surface 34 guides the rising smoke gases to the open sides 16, 18, 20 of the combustion chamber 12 and directs the Flue gases then up there from the combustion chamber 12 into the smoke extraction chamber 30.
  • the weir surface 34 is preferably located between 3 cm and 10 cm, in particular between 5 cm and 8 cm above the lower edge 42 delimiting the smoke extractor hood 28 at the open sides 16, 18, 20 at the bottom.
  • the first gap 36 has a constant width of 6 cm along the first side 16.
  • the second gap 38 tapers from the closed side 14 towards the first side 16 from a width of 14 cm to a width of 2 cm.
  • the third gap 40 tapers from the closed side 14 towards the first side 16 from a width of 14 cm to a width of 2 cm.
  • an embodiment of an open hearth 10 is illustrated, which has a left side wall or closed, third side 44 instead of an open, third side. Furthermore, in this open hearth 10 according to Figures 5 to 8 the first gap 36, starting from this closed third side 44, tapers along the first side 16. The first gap 36 has a width of 12 cm near the third side 44 and a width of 4 cm near the second side 18.
  • a closure device 46 arranged essentially in the smoke extraction space 30 can also be seen, by means of which the Smoke hood 28 is optionally closable.
  • the closure device 46 is to be operated from below the weir surface 34, it being possible for this to have a recess (not shown) for this purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP16189521.4A 2016-09-19 2016-09-19 Offene feuerstelle mit einer rauchabzugshaube Active EP3296641B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL16189521T PL3296641T3 (pl) 2016-09-19 2016-09-19 Otwarte palenisko z czopuchem
EP16189521.4A EP3296641B1 (de) 2016-09-19 2016-09-19 Offene feuerstelle mit einer rauchabzugshaube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16189521.4A EP3296641B1 (de) 2016-09-19 2016-09-19 Offene feuerstelle mit einer rauchabzugshaube

Publications (2)

Publication Number Publication Date
EP3296641A1 EP3296641A1 (de) 2018-03-21
EP3296641B1 true EP3296641B1 (de) 2021-03-31

Family

ID=56979398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189521.4A Active EP3296641B1 (de) 2016-09-19 2016-09-19 Offene feuerstelle mit einer rauchabzugshaube

Country Status (2)

Country Link
EP (1) EP3296641B1 (pl)
PL (1) PL3296641T3 (pl)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302348A1 (de) * 1982-12-23 1984-06-28 Karl 6950 Mosbach Flanderka Feuerstelle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886047A (en) * 1988-10-07 1989-12-12 Bonin Paul R Fireplace heat efficiency device
DE19911998C2 (de) * 1999-03-17 2001-07-26 Cera Design By Britta Von Tasc Ofen, insbesondere Kamin
FR2835043B1 (fr) * 2002-01-18 2006-09-01 Michel Labattu Systeme simplifie d'allongement du parcours des fumees dans l'avaloir d'un foyer ferme
DE102013103205A1 (de) * 2013-03-08 2014-09-11 Thomas Blank Heizgerät, Bevorratungseinsatz für ein Heizgerät und Betriebsverfahren für ein Heizgerät

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3302348A1 (de) * 1982-12-23 1984-06-28 Karl 6950 Mosbach Flanderka Feuerstelle

Also Published As

Publication number Publication date
EP3296641A1 (de) 2018-03-21
PL3296641T3 (pl) 2021-10-25

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