EP2761228B1 - Oven - Google Patents
Oven Download PDFInfo
- Publication number
- EP2761228B1 EP2761228B1 EP12761876.7A EP12761876A EP2761228B1 EP 2761228 B1 EP2761228 B1 EP 2761228B1 EP 12761876 A EP12761876 A EP 12761876A EP 2761228 B1 EP2761228 B1 EP 2761228B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- heating circuit
- baking chamber
- oven
- baking
- 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.)
- Not-in-force
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Classifications
-
- 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
- F24C9/00—Stoves or ranges heated by a single type of energy supply not covered by groups F24C3/00 - F24C7/00 or subclass F24B
-
- 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
- F24C15/00—Details
- F24C15/34—Elements and arrangements for heat storage or insulation
Definitions
- the invention relates to an oven with a baking chamber, with a connected to a heat storage heating circuit for the oven and a connected to a solar collector charging circuit for the heat storage.
- the charging circuit connected to the solar collector can also be connected directly to the heating circuit for the stove.
- a disadvantage of This known system for operating a stove by using solar energy is mainly the construction effort. Apart from that, in the case of ovens, in particular for commercial or industrial use, with regard to the heat balance, requirements which are generally not met in ovens having a baking chamber for domestic use are to be met. Further prior art is in the DE10045074 to find.
- the invention is therefore based on the object, an oven with a baking chamber of the type described in such a way that it corresponds to the requirements placed on ovens for commercial and industrial use in terms of heat balance, with a relatively low construction costs.
- the invention solves the problem set by the fact that the heat storage and the oven provided above the heat storage chamber are arranged in a thermally insulated housing and that the heating circuit is laid on a fireclay lining of the oven. Due to the arrangement of the oven and the heat storage in a common, heat-insulated housing first heat losses through connecting lines between the heat storage and the oven can be easily avoided.
- the arrangement of the baking chamber immediately above the heat storage not only ensures an advantageous, compact design, but also takes into account that the baking chamber can absorb the radiated heat from the heat storage.
- the heat load of the oven can be adapted to the baking conditions advantageous, the oven can have a vault in the usual way, run on the fireclay lining between a manifold and a manifold parallel heating cables of the heating circuit. This measure causes a uniform heat radiation over the entire oven length in the direction of the vault axis. If necessary, but can of course also be guided through the bottom of the baking chamber, a portion of the heating circuit, which is preferably controlled separately, to be able to apply the baking chamber with an adapted to the case of need upper and lower heat.
- the charging circuit may comprise at least one provided in the bottom region of the heat storage pipe coil for the heat transfer of the charging circuit, so that can form a temperature stratification within the liquid heat storage medium of the heat storage, the use of the respective Maximum temperature of the heat accumulator allowed for the heating circuit when the heating circuit has at least one provided in the ceiling region of the heat accumulator line coil for the heat transfer medium of the heating circuit.
- the separate from the heat storage medium heat transfer medium for the heating circuit represents a security that can not be contaminated by the heat storage medium of the heat storage of the oven even with a leak of the heating circuit, and on the other hand offers the advantage of heat removal, without the stratification of the heat transfer medium within the heat storage sustainable to destroy, as would be the case when the heat storage medium is used as a heat transfer medium for the heating circuit.
- the heating circuit can be optionally connected to the charging circuit.
- the heat accumulator may have an additional heating, which allows the required for a baking operation temperature level within the heat storage even in adverse external circumstances.
- This additional heating preferably also a heat exchanger, can be supplied with energy in very different ways. It is only important that in an emergency, the oven does not need to be taken out of service.
- the in the Fig. 1 and 2 schematically shown oven has a provided with a fireclay lining 1 baking chamber 2, which is provided at its front end with an operating opening 3, as in particular the Fig. 1 can be removed, which shows the oven in a schematic longitudinal section.
- the fireclay lining 1 forms according to the Fig. 2 in the usual way a vault 4, which is supported by a bottom plate 5.
- the baking chamber 2 is placed on a heat storage 6, the container 7 together is arranged with the baking chamber 2 in a common, heat-insulated housing 8.
- the housing 8 from a container 7 of the heat accumulator 6 receiving lower part 9 and an upper part 10 is constructed, wherein the arrangement is made such that the bottom plate 5 of the baking chamber 2, the lower part 9 with the container 7 of the heat accumulator 6 after closes at the top and the upper part 10 is placed on the over the fireclay lining 1 of the baking chamber 2 projecting bottom plate 5.
- the heat accumulator 6 is charged via a charging circuit 11 provided with a charge pump 12, which is connected via a heat exchanger 13 to the collector circuit 14 of a solar collector 15.
- the pump for the collector circuit 14 is designated 16.
- the solar collector 15 itself has in a conventional manner a cross-sectionally parabolic reflector pan 17 and an absorber tube 18 in the focal axis of the reflector pan 17, so that the bundled in the absorber tube 18, reflected heat radiation of the sun for a sufficient temperature of the heat carrier of the collector circuit 14th ensures that it can supply an oven with heat energy.
- the charging circuit 12 forms within the container 7 for the heat storage 6, a heat exchanger in the form of at least one provided in the bottom region of the heat accumulator 6 line coil 19 which is laid meandering over the container bottom, so that the heat storage 6 applied uniformly over the entire bottom region of the container 7 with heat can be.
- the heat of the charging circuit 13 receiving heat storage medium is provided, via which the stored heat can be delivered to a heating circuit 20 for the oven 2.
- the provided with a heating pump 21 heating circuit 20 forms in the ceiling region of the container 7 of the heat accumulator 6, in turn meandering laid pipe coil 22 as a heat exchanger.
- the heat carrier for the heating circuit 20 is heated, comprising the heating lines 23 for the baking chamber 2.
- These heating lines 23 are each between a distribution line 24 along the bottom plate 5 and a manifold 25 along the vertex of the vault 4 of the baking chamber 2 connected in parallel, so that the baking chamber 2 can be acted upon uniformly over its extending in the direction of the vault axis length with heat.
- the baking temperature can be controlled within the baking chamber 2.
- the heat storage 6 is equipped with an auxiliary heater 26 in the form of a dash-dotted line indicated heat exchanger.
- the baking chamber 2 is arranged with its fireclay lining 1 and laid on the outside of the fireclay lining 1 heating cables 23 within a common, heat-insulated housing 8 together with the heat storage 6 and placed on the container 7 of the heat accumulator 6, structurally comparatively simple, den Heat conditions advantageous bill-bearing design conditions that allow the use of solar energy for ovens in commercial and industrial use with a relatively high efficiency without having to do without sufficient control of the heat supply to the oven 2.
- the block diagram after Fig. 1 illustrates only the basic line connections and, for example, the expansion tank, control valves and control units for clarity does not show.
- the quite meaningful connection between the charging circuit 12 and the heating circuit 20 is neglected to operate the baking chamber 2, bypassing the heat accumulator 6 optionally on the solar panel 15 can.
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)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Description
Die Erfindung bezieht sich auf einen Backofen mit einem Backraum, mit einem an einen Wärmespeicher angeschlossenen Heizkreis für den Backraum und mit einem an einen Sonnenkollektor angeschlossenen Ladekreis für den Wärmespeicher.The invention relates to an oven with a baking chamber, with a connected to a heat storage heating circuit for the oven and a connected to a solar collector charging circuit for the heat storage.
Um Sonnenenergie für die Energieversorgung eines Herdes mit einem Backraum vorteilhaft nützen zu können, ist es bekannt (
Der Erfindung liegt somit die Aufgabe zugrunde, einen Backofen mit einem Backraum der eingangs geschilderten Art so auszugestalten, dass er hinsichtlich des Wärmehaushalts den an Backöfen für den gewerblichen und industriellen Einsatz gestellten Anforderungen entspricht, und zwar mit einem vergleichsweise geringen baulichen Aufwand.
Die Erfindung löst die gestellte Aufgabe dadurch, dass der Wärmespeicher und der über dem Wärmespeicher vorgesehene Backraum in einer wärmeisolierten Einhausung angeordnet sind und dass der Heizkreis auf einer Schamotteauskleidung des Backraums verlegt ist.
Durch die Anordnung des Backraums und des Wärmespeichers in einer gemeinsamen, wärmeisolierten Einhausung können zunächst Wärmeverluste über Verbindungsleitungen zwischen dem Wärmespeicher und dem Backofen einfach vermieden werden. Die Anordnung des Backraums unmittelbar oberhalb des Wärmespeichers stellt dabei nicht nur eine vorteilhafte, kompakte Bauweise sicher, sondern nimmt auch darauf Rücksicht, dass der Backraum die vom Wärmespeicher abgestrahlte Wärme aufnehmen kann. Dazu kommt, dass durch die wärmefeste Schamotteauskleidung des Backraums eine für die Wärmebeaufschlagung des Backraums günstige Verteilung der von der Schamotteauskleidung abgestrahlten Wärme erreicht wird, wenn der Heizkreis in der Schamotteauskleidung auf der den Backraum abgewandten Seite verlegt wird, sodass sich durch die Summe dieser Maßnahmen ein für einen insbesondere den gewerblichen und industriellen Einsatz kennzeichnenden Langzeitbetrieb des Backofens vorteilhafter Wärmehaushalt unter Wahrung vergleichsweise einfacher baulicher Maßnahmen erzielen lässt.The invention is therefore based on the object, an oven with a baking chamber of the type described in such a way that it corresponds to the requirements placed on ovens for commercial and industrial use in terms of heat balance, with a relatively low construction costs.
The invention solves the problem set by the fact that the heat storage and the oven provided above the heat storage chamber are arranged in a thermally insulated housing and that the heating circuit is laid on a fireclay lining of the oven.
Due to the arrangement of the oven and the heat storage in a common, heat-insulated housing first heat losses through connecting lines between the heat storage and the oven can be easily avoided. The arrangement of the baking chamber immediately above the heat storage not only ensures an advantageous, compact design, but also takes into account that the baking chamber can absorb the radiated heat from the heat storage. In addition, through the heat-resistant fireclay lining of the baking chamber, a distribution of the heat emitted by the fireclay lining, which is advantageous for applying heat to the baking chamber, is achieved when the heating circuit in the fireclay lining is laid on the side facing away from the baking chamber, so that the sum of these measures results in a for a particular commercial and industrial use characterizing long-term operation the oven can achieve advantageous heat balance while maintaining comparatively simple construction measures.
Damit die Wärmebeaufschlagung des Backraums den Backbedingungen vorteilhaft angepasst werden kann, kann der Backraum in üblicher Weise ein Gewölbe aufweisen, auf dessen Schamotteauskleidung zwischen einer Verteilerleitung und einer Sammelleitung parallel geschaltete Heizleitungen des Heizkreises verlaufen. Diese Maßnahme bewirkt eine gleichmäßige Wärmeabstrahlung über die gesamte Backraumlänge in Richtung der Gewölbeachse. Im Bedarfsfall kann aber selbstverständlich auch durch den Boden des Backraums ein Abschnitt des Heizkreises geführt werden, der vorzugsweise gesondert angesteuert wird, um den Backraum mit einer an den Bedarfsfall angepassten Ober- und Unterhitze beaufschlagen zu können.Thus, the heat load of the oven can be adapted to the baking conditions advantageous, the oven can have a vault in the usual way, run on the fireclay lining between a manifold and a manifold parallel heating cables of the heating circuit. This measure causes a uniform heat radiation over the entire oven length in the direction of the vault axis. If necessary, but can of course also be guided through the bottom of the baking chamber, a portion of the heating circuit, which is preferably controlled separately, to be able to apply the baking chamber with an adapted to the case of need upper and lower heat.
Um für das Laden und Entladen des Wärmespeichers vorteilhafte Voraussetzungen geschaffen werden können, kann der Ladekreis wenigstens eine im Bodenbereich des Wärmespeichers vorgesehene Leitungsschlange für den Wärmeträger des Ladekreises umfassen, sodass sich innerhalb des flüssigen Wärmespeichermediums des Wärmespeichers eine Temperaturschichtung ausbilden kann, die die Nutzung der jeweiligen Höchsttemperatur des Wärmespeichers für den Heizkreis erlaubt, wenn der Heizkreis wenigstens eine im Deckenbereich des Wärmespeichers vorgesehene Leitungsschlange für den Wärmeträger des Heizkreises aufweist. Der vom Wärmespeichermedium gesonderte Wärmeträger für den Heizkreis stellt einerseits eine Sicherheit dar, dass durch das Wärmespeichermedium des Wärmespeichers der Backraum selbst bei einem Leckwerden des Heizkreises nicht verunreinigt werden kann, und bietet anderseits den Vorteil einer Wärmeentnahme, ohne die Schichtung des Wärmeträgermediums innerhalb des Wärmespeichers nachhaltig zu zerstören, wie dies der Fall wäre, wenn das Wärmespeichermedium als Wärmeträger für den Heizkreis verwendet wird.In order to create advantageous conditions for charging and discharging the heat accumulator, the charging circuit may comprise at least one provided in the bottom region of the heat storage pipe coil for the heat transfer of the charging circuit, so that can form a temperature stratification within the liquid heat storage medium of the heat storage, the use of the respective Maximum temperature of the heat accumulator allowed for the heating circuit when the heating circuit has at least one provided in the ceiling region of the heat accumulator line coil for the heat transfer medium of the heating circuit. The separate from the heat storage medium heat transfer medium for the heating circuit on the one hand represents a security that can not be contaminated by the heat storage medium of the heat storage of the oven even with a leak of the heating circuit, and on the other hand offers the advantage of heat removal, without the stratification of the heat transfer medium within the heat storage sustainable to destroy, as would be the case when the heat storage medium is used as a heat transfer medium for the heating circuit.
Damit unter Umgehung des Wärmespeichers der Heizkreis für einen Backraum mit einem über die Sonnenenergie erwärmten Wärmeträger beaufschlagt werden kann, kann der Heizkreis wahlweise an den Ladekreis angeschlossen werden.Thus, bypassing the heat storage of the heating circuit for a baking chamber can be acted upon by a heated by the solar heat transfer medium, the heating circuit can be optionally connected to the charging circuit.
Zur Sicherstellung einer ausreichenden Wärmemenge für den Backbetrieb unabhängig von der Ladung des Wärmespeichers über den Sonnenkollektor kann der Wärmespeicher eine Zusatzheizung aufweisen, die das für einen Backbetrieb erforderliche Temperaturniveau innerhalb des Wärmespeichers auch bei widrigen äußeren Umständen ermöglicht. Diese Zusatzheizung, vorzugsweise ebenfalls ein Wärmetauscher, kann auf sehr unterschiedliche Weise mit Energie versorgt werden. Es kommt ja nur darauf an, dass im Notfall der Backofen nicht außer Betrieb genommen werden muss.To ensure a sufficient amount of heat for the baking operation regardless of the charge of the heat accumulator on the solar panel, the heat accumulator may have an additional heating, which allows the required for a baking operation temperature level within the heat storage even in adverse external circumstances. This additional heating, preferably also a heat exchanger, can be supplied with energy in very different ways. It is only important that in an emergency, the oven does not need to be taken out of service.
In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen
- Fig. 1
- einen erfindungsgemäßen Backofen in einem schematischen Blockschaltbild und
- Fig. 2
- den Backofen schematisch in einer stirnseitigen Ansicht in einem größeren Maßstab.
- Fig. 1
- an oven according to the invention in a schematic block diagram and
- Fig. 2
- the oven schematically in a frontal view on a larger scale.
Der in den
Gemäß der
Damit auch bei einem Ausfall des Sonnenkollektors 15 der Backofen betrieben werden kann, ist der Wärmespeicher 6 mit einer Zusatzheizung 26 in Form eines strichpunktiert angedeuteten Wärmetauschers ausgerüstet.Thus, even with a failure of the
Da der Backraum 2 mit seiner Schamotteauskleidung 1 und den auf der Außenseite der Schamotteauskleidung 1 verlegten Heizleitungen 23 innerhalb einer gemeinsamen, wärmeisolierten Einhausung 8 zusammen mit dem Wärmespeicher 6 angeordnet und auf den Behälter 7 des Wärmespeichers 6 aufgesetzt ist, ergeben sich baulich vergleichsweise einfache, den Wärmeverhältnissen vorteilhaft Rechnung tragende Konstruktionsbedingungen, die die Nutzung der Sonnenenergie für Backöfen im gewerblichen und industriellen Einsatz mit einem vergleichsweise hohen Wirkungsgrad erlauben, ohne auf eine ausreichende Regelung der Wärmezufuhr zum Backraum 2 verzichten zu müssen. In diesem Zusammenhang ist festzuhalten, dass das Blockschaltbild nach
Claims (6)
- Baking oven having a baking chamber (2), having a heat accumulator (6), having a heating circuit (20) for the baking chamber (2), said heating circuit being connected to the heat accumulator (6), and having a solar collector (15) which is connected to a charging circuit (12) for the heat accumulator (6), characterised in that the baking oven comprises a heat-insulated housing (8) and the heat accumulator (6) and the baking chamber (2) provided above the heat accumulator (6) are arranged in the heat-insulated housing (8), and in that the baking chamber comprises a fireclay lining (1) and the heating circuit (20) is laid on the outer side of the fireclay lining (1) of the baking chamber (2).
- Baking oven as claimed in claim 1, characterised in that the baking chamber (2) has an arch (4), heating lines (23) of the heating circuit (20) which are connected in parallel between a distributor line (24) and a collecting line (25) extending on the fireclay lining (1) of said arch.
- Baking oven as claimed in claim 1 or 2, characterised in that the charging circuit (12) comprises at least one line serpentine (19), which is provided in the base region of the heat accumulator (6), for the heat carrier of the charging circuit (12).
- Baking oven as claimed in any one of claims 1 to 3, characterised in that the heating circuit (20) comprises at least one line serpentine (22), which is provided in the ceiling region of the heat accumulator (6), for the heat carrier of the heating circuit (20).
- Baking oven as claimed in any one of claims 1 to 4, characterised in that the charging circuit (12) can optionally be connected to the heating circuit (20).
- Baking oven as claimed in any one of claims 1 to 5, characterised in that an additional heater (26) is provided for the heat carrier (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1401/2011A AT511203B1 (en) | 2011-09-28 | 2011-09-28 | OVEN |
PCT/AT2012/050123 WO2013044280A1 (en) | 2011-09-28 | 2012-09-03 | Oven |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2761228A1 EP2761228A1 (en) | 2014-08-06 |
EP2761228B1 true EP2761228B1 (en) | 2017-11-08 |
Family
ID=46888274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12761876.7A Not-in-force EP2761228B1 (en) | 2011-09-28 | 2012-09-03 | Oven |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2761228B1 (en) |
AT (1) | AT511203B1 (en) |
WO (1) | WO2013044280A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160161150A1 (en) * | 2014-12-04 | 2016-06-09 | Steven B. Zintel | Solar powered cooking device |
CN108916868B (en) * | 2018-06-14 | 2019-09-10 | 玉和建设有限公司 | A kind of material return device for circulating fluidized bed boiler lining low temperature furnace drying method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE813382C (en) * | 1949-03-22 | 1951-09-13 | Heinz Dr-Ing Hefermann | Electrically heated oven |
HU207152B (en) | 1991-07-05 | 1993-03-01 | Gabor Goede | Solar-energy utilizing apparatus and collector unit and connection arrangement for solar-energy utilizing apparatus |
DE4142119A1 (en) * | 1991-12-20 | 1993-06-24 | Klemens Prof Dr Schwarzer | Solar cooker with collector for heating medium - has hand regulator and storage together with several hobs to which there is controlled medium supply |
DE19603742A1 (en) * | 1996-02-02 | 1997-08-07 | Poetzscher Carola | Portable heater or cooker for food |
DE20007857U1 (en) * | 2000-04-29 | 2000-09-14 | Carola Pötzscher GmbH & Co. KG Lebensmitteltechnik, 08144 Stenn | Portable wood oven |
DE10045074A1 (en) * | 2000-09-12 | 2002-03-28 | Bsh Bosch Siemens Hausgeraete | Domestic appliance system has useful heat provided by latent heat storage device supplied with solar and/or geothermal heat energy |
CN102252430B (en) * | 2011-04-30 | 2013-09-04 | 张其明 | Indoor oven of solar heat storage device |
CN102261749B (en) * | 2011-05-30 | 2013-08-28 | 张其明 | Solar oven |
-
2011
- 2011-09-28 AT ATA1401/2011A patent/AT511203B1/en active
-
2012
- 2012-09-03 EP EP12761876.7A patent/EP2761228B1/en not_active Not-in-force
- 2012-09-03 WO PCT/AT2012/050123 patent/WO2013044280A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
WO2013044280A1 (en) | 2013-04-04 |
AT511203B1 (en) | 2012-10-15 |
EP2761228A1 (en) | 2014-08-06 |
AT511203A4 (en) | 2012-10-15 |
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