EP1967794A2 - Four doté d'un guidage de flamme centré - Google Patents

Four doté d'un guidage de flamme centré Download PDF

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Publication number
EP1967794A2
EP1967794A2 EP08004294A EP08004294A EP1967794A2 EP 1967794 A2 EP1967794 A2 EP 1967794A2 EP 08004294 A EP08004294 A EP 08004294A EP 08004294 A EP08004294 A EP 08004294A EP 1967794 A2 EP1967794 A2 EP 1967794A2
Authority
EP
European Patent Office
Prior art keywords
shell
insert
oven according
passage opening
partially
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.)
Pending
Application number
EP08004294A
Other languages
German (de)
English (en)
Other versions
EP1967794A3 (fr
Inventor
Johann Rainer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1967794A2 publication Critical patent/EP1967794A2/fr
Publication of EP1967794A3 publication Critical patent/EP1967794A3/fr
Pending legal-status Critical Current

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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
    • F24B1/02—Closed stoves

Definitions

  • the invention relates to a furnace with a combustion chamber designed for burning solid fuel.
  • Such ovens are known. They are used today as stoves, but also as radiators for heating whole apartments and houses. As solid fuels nowadays increasingly compacts of granular combustible material, called pellets, are used. Accordingly, such stoves modern design also called pellet or firewood ovens. In order to give the user the pleasant appearance of an open fireplace, just in furnaces that are located in the living area, the combustion, for example, by a glass pane in the oven wall or made of fireproof glass oven door from the outside to see.
  • the object of the invention is to provide an oven which enables improved and in particular more uniform combustion of the fuels.
  • This object is achieved by the invention by a development of the furnace of the type mentioned, which is characterized by a arranged in the furnace shell-like insert with a designed for flame passage passage opening in its bottom region, which faces the bottom or one side of the firebox.
  • the invention is based on the finding that a more uniform combustion, in particular of residues of still flammable flue gases, is made possible by an orderly centering of the flame effected by the passage opening of the shell-type insert.
  • the flue gases flow through the defined through-opening, wherein a thorough mixing of combustible flue gases with combustion air is brought about forcibly.
  • combustion air With the strong mixing of the flue gases with combustion air necessary for the residual combustion of the flue gases combustion air is sufficiently available.
  • the shape of the shell-like insert defines a heat storage, which counteracts cooling of the combustion chamber in the region of the shell interior by the at least partially restrained for the heat loss in the area heat radiation. Otherwise, the heat generated in this area would unhindered outward in the direction of the combustion chamber inner walls radiated and initially only lead to a warming in the area of the furnace, which is remote from the firing center.
  • the through-opening faces the bottom or side of the furnace.
  • the passage opening is central, preferably formed symmetrically in the shell-like insert.
  • the uniformity of the combustion can be further increased.
  • the shell-like insert consists at least partially of refractory ceramic glass.
  • refractory ceramic glass are, for example, the ROBAX® glasses marketed by SCHOTT AG.
  • an inner wall region of the shell-like insert is formed at least partially reflecting.
  • heat radiation emitted by the flame in the interior of the shell can be at least partially reflected back into the interior, resulting in a lower cooling of the combustion area or a correspondingly higher temperature, which promotes afterburning of the flue gases.
  • Another advantage is that the luminosity of the flame in the interior of the shell is increased by increased afterburning.
  • a simple way of achieving the reflective interior wall portions is to at least partially form the walls of the tray-like insert from metal. However, the shell remains opaque at least in those areas where it is completely made of metal.
  • the refractory ceramic glass is at least partially mirrored on inner wall areas.
  • On the other ceramic glass is further used as a material, so that transparent areas of the shell walls are possible.
  • the mirroring of the ceramic glass is such that the shell wall portions are at least partially transparent during operation of the furnace, in particular.
  • glasses of the type of ROBAX ® mirrored glass-ceramics These are manufactured, among others, for chimney windows or interior linings by SCHOTT AG. These discs are in the unfired state, the view through the disc is denied, whereas the flame is visible in the heated state through the walls. Thus, a good afterburning can be combined with a good visual appearance.
  • shell-like insert is cylindrical or bowl-shaped.
  • the shell walls extend obliquely to the bottom plane of the shell-like insert.
  • the angle of inclination of the shell walls relative to the ground plane in the range of 5 ° to 75 °, preferably 15 ° to 60 °, in particular 25 ° to 40 °.
  • a bowl angle of 90 ° you would again have a cylindrical insert.
  • the shell walls are concave.
  • a focusing effect can be achieved.
  • the shell walls are elliptical or parabolic.
  • the focusing effect can be enhanced, on the other hand, a still more attractive flame image can be obtained.
  • the shell in plan view of the passage plane of the bottom portion has a round or polygonal shape.
  • the shell fits into most stoves fitting and is structurally simple to manufacture.
  • the passage opening has a round or polygonal shape.
  • a suitably centered guidance of the flame can be achieved, wherein the edge regions of the passage opening can be uniformly heated or made to glow, resulting in a more even afterburning.
  • a border of the passage opening on an at least partially pointed to the passage opening tapered edge.
  • the invention also relates to a shell-like insert with the features already described above.
  • a first embodiment of a shell 1 is shown for a furnace according to the invention, wherein the furnace itself is not shown, but only the interior of the furnace is indicated by the reference numeral 10.
  • a burner shell 11 is arranged, are received in the not shown pellets for burning.
  • a provided in the bottom portion of the shell 1 through-hole 2 ensures that the flame (not shown) beats in use of the furnace substantially through the passage opening 2 and flow with their flue gases and the resulting suction and combustion gases through the opening 2 upwards.
  • a well-defined flame path is given through the through-hole 2, which is dimensioned comparatively narrow, and the flue gases will mix strongly with the combustion gases.
  • the side walls 3 extend obliquely to the bottom plane of the passage opening 2.
  • the shell 1 in plan view has a substantially quadrangular shape, with four side walls 3a to 3d, which are each inclined relative to the ground in this embodiment about an angle of 30 °. This can be well recognized from the inclination of the edge 4 between the side walls 3a and 3d.
  • a bordering region 6 of the through-opening 2 which forms the lower edges of the four side walls 3 a to 3 d, will firstly be heated to a higher degree or annealed. Due to the elevated temperature of the border 6 still flammable flue gases can ignite it, and provide for further combustion and thus a better combustion quality.
  • the material of the shell 1 must be designed fireproof. But even refractory products with poor heat conduction can be used for the shell 1.
  • the shell 1 is made of a refractory ceramic glass, so that the striking through the opening Flame 2 through the side walls 3 remains visible to the viewer, unless of course the interior 10 itself is visible from outside the furnace through about a glass wall or a glass door.
  • the inner surfaces of the shell walls 3a to 3d are mirrored, but only mirrored so that the transparency of the ceramic glass is at least partially maintained, about 50%. Due to the mirroring of the inner surfaces, at least part of the inner surfaces of the side walls 3a to 3d of the shell 1 are reflected by the heat radiation emanating from the opening 2 flames and thrown back into the focal region above the passage opening 2. Thus, more heat is returned to this burning area, slows down the cooling in this burning area and achieves an improved quality of combustion. As already mentioned, on the one hand the combustion efficiency can be increased on the one hand and also environmentally harmful emissions can be reduced by achieving a more complete residual combustion of the flue gases located in this area. As already mentioned, heating of the border 6 ensures a gliding edge, which ensures that the flue gases can also ignite.
  • the mirrored ceramic glass does not necessarily have to be used. Ceramic glazed surfaces or polished metal surfaces could also be used for the inner surfaces of the side walls 3a to 3d.
  • the remaining transparency in the use of the mirrored ceramic glass has the advantage that the flame in the shell area not only remains visible, but due to multiple reflections through the mirrored inner surfaces an optical multiplication of the flame image is achieved for the viewer.
  • This pleasing to the viewer optical magnification of the flame play is all the more effective, since the design of the shell 1 in the shell interior area a more uniform and better combustion is achieved, which also increases the luminosity of the flame.
  • Fig. 2 shows a further embodiment of the shell 1, in which the shell 1 has a polygonal basic shape with eight side surfaces 3a to 3h. Accordingly, the Through hole 2 formed as an octagon, while in the embodiment of Fig. 1 was square.
  • the material for the shell 1, as well as in this Embodiment preferred consists of the mirror glass described above.
  • Fig. 3 shows a third embodiment of a shell 1.
  • the side surfaces 3 do not form a slope 4 with the bottom plane, but a side curved edge 5, which provides a concave shell shape.
  • the shape of the curvature is elliptical. But it could also be used a parabolic shape. Due to the concave curvature of the shell wall 3, an additional focus effect of reflected from the reflective inner surface 5a heat radiation results, so that in the interior of the shell 1 above the through hole 2 can form even hotter areas, the improved afterburning of the flowing through the through-hole 2 flue gases enable.
  • This form is opposite to the in Fig. 1 and Fig. 2 shown forms with oblique side walls again preferred.
  • Fig. 4 is the shell 1 off Fig. 3 enlarged again and shown in cross section. It can be clearly seen that the border 6 of the through hole 2 tapers to the passage opening in the form of a sharp edge 7. This can be achieved simply by the edge of the border 6 is bevelled. The tapered edge 7 can be made to glow faster again faster to ignite the flue gases flowing past it faster and initiate the desired afterburning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Solid-Fuel Combustion (AREA)
EP08004294.8A 2007-03-08 2008-03-07 Four doté d'un guidage de flamme centré Pending EP1967794A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007011438A DE102007011438A1 (de) 2007-03-08 2007-03-08 Ofen mit zentrieter Flammenführung

Publications (2)

Publication Number Publication Date
EP1967794A2 true EP1967794A2 (fr) 2008-09-10
EP1967794A3 EP1967794A3 (fr) 2017-09-13

Family

ID=39591399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08004294.8A Pending EP1967794A3 (fr) 2007-03-08 2008-03-07 Four doté d'un guidage de flamme centré

Country Status (2)

Country Link
EP (1) EP1967794A3 (fr)
DE (1) DE102007011438A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941154C (de) * 1953-02-10 1956-04-05 Artur Magiera Herd- und Ofeneinsatz
CH463746A (de) * 1968-04-08 1968-10-15 Schmid Hans Transportable Feuerstelle
US4539973A (en) * 1984-11-05 1985-09-10 Pyromid, Inc. Portable outdoor cooking unit with device for extinguishing the flame of canned jelly alcohol and the like
US4938202A (en) * 1985-04-24 1990-07-03 Pyromid, Inc. Outdoor cooking unit with disposable component
IT8907008A0 (it) * 1989-05-15 1989-05-15 Valentini Arnaldo Griglia magik
GB2269311A (en) * 1992-08-07 1994-02-09 Anthony Michael Lingwood Outdoor cooking device
JPH10500052A (ja) * 1995-03-07 1998-01-06 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ ホット飲料準備装置
FR2813656B1 (fr) * 2000-09-04 2003-02-28 Marie Catherine Treport Cuisiniere a combustible solide
ITPN20040022A1 (it) * 2004-03-24 2004-06-24 Smartech Italia S R L Ora Smar "apparecchiatura mobile provvista di superficie per la cottura a contatto"
WO2006116849A1 (fr) * 2005-05-02 2006-11-09 Cropley Holdings Ltd. Procede et appareil de cuisson avec un gaz combustible obtenu au moyen d'un electrolyseur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1967794A3 (fr) 2017-09-13
DE102007011438A1 (de) 2008-09-11

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