EP2444742B1 - Fourneau à accumulation de chaleur - Google Patents
Fourneau à accumulation de chaleur Download PDFInfo
- Publication number
- EP2444742B1 EP2444742B1 EP11185687.8A EP11185687A EP2444742B1 EP 2444742 B1 EP2444742 B1 EP 2444742B1 EP 11185687 A EP11185687 A EP 11185687A EP 2444742 B1 EP2444742 B1 EP 2444742B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- thermogenerator
- storage
- storage cooker
- heat source
- 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
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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
- F24C15/00—Details
- F24C15/34—Elements and arrangements for heat storage or insulation
-
- 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
- F24B1/20—Ranges
- F24B1/24—Ranges with built-in masses for heat storage or heat insulation
Definitions
- the invention relates to a heat storage cooker with at least one heat source.
- From the DE 1 141 063 A is an electrically heated heat storage cooker known with several hotplates and a storage core including heating element as a heat source.
- the heating element is an electrical heating element, so the heat storage stove absolutely requires an electrical connection.
- the DE 10 2008 039 020 A1 shows a combination of a hot gas engine with an electric generator.
- the hot gas engine converts thermal energy into mechanical energy, which in turn is then converted into electrical energy in the electrical generator.
- a Sterling motor shown there is led to a chiller as the cold side or to an outside air flow as the cold side.
- thermal generators which are heated by a burner on their hot side. Cooling fins are provided on a cold side in order to be cooled by ambient air.
- a stove which is used to heat a room but can also be used for cooking and for this purpose has a hotplate which corresponds to a hotplate.
- the furnace has a thermogenerator with a cold side, which is connected to an air duct or to an air supply duct.
- thermogenerators From the DE 31 48 162 A1 thermal generators are known for gas heating. With these thermogenerators, too, the respective cold side is thermally coupled to the environment or to the ambient air.
- the invention has for its object to provide a heat storage cooker mentioned at the outset, with which problems of the prior art can be avoided and, in particular in the case of autonomous operation, independent of an electrical connection, further functions can be provided.
- the heat storage cooker has a thermal generator with a hot side and a cold side.
- the thermal generator generates electrical energy in a manner known per se when operating the heat source to supply an electrical functional unit of the heat storage cooker with electrical energy.
- the hot side is provided close to the heat source or has a good thermal coupling to it.
- the cold side is to pass through the thermal energy to an oven or to a hotplate of the heat storage cooker.
- the cold side can also be routed to the heat store itself, which can also be a water bath, for example, and whose temperature is lower than that of the heat source.
- the thermal generator is thus heated by the heat source or thermal energy is introduced on its hot side.
- the thermal energy is drawn off or derived on the cold side and the electrical energy is generated therefrom in a known manner.
- the heat storage cooker has an electronic control, which in particular also has a functional memory, automatic programs and / or electronically controlled and evaluated operating elements, particularly preferably as a touch switch.
- Their energy requirements can be generated with a few watts from a thermogenerator that is not too large.
- a gas-operated heat storage cooker which then also has, for example, at least one electronically controlled gas valve, it can carry out automatic sequence programs or so-called automatic programs.
- timer operation can also be made possible, which draws attention to a time lapse at least through optical and / or acoustic displays.
- the heat storage cooker can have an energy store, advantageously as an accumulator or under certain circumstances also with at least one capacitor.
- an energy store advantageously as an accumulator or under certain circumstances also with at least one capacitor.
- the thermogenerator can also be operated continuously as long as the heat source generates heat and, for example, also fill and keep a larger energy store at a relatively low power rating. From this, considerably more electrical energy can then be extracted for the actual use of the heat storage cooker than is currently being generated by the thermal generator.
- the heat storage stove can also be made possible for the heat storage stove to heat up automatically, so to speak, at certain programmed times, for example at lunchtime and in the evening. It cools down again at night when the likelihood of use is very low.
- the heat storage cooker can have several heat sources, for example because it has several hot plates or additionally an oven with muffle.
- the thermogenerator is advantageously coupled to the heat source which is designed for permanent or frequent or main operation.
- this is a heat source connected to at least one hotplate, since hotplates are also used more frequently in heat storage stoves than any oven muffle that may be present. In this way, the thermogenerator can be operated for as long as possible.
- the heat storage cooker can have heat sinks.
- the thermogenerator is coupled to the heat sink that remains cool or less hot even in continuous operation, so that there is a sufficiently large temperature difference at the thermogenerator for its operation with the required power.
- the heat storage cooker is not only not connected to an electrical energy source, but has no such connection at all. In any case, he is self-sufficient.
- thermogenerator is coupled to thermogenerator a further consideration to which of several heat sources the thermogenerator is coupled can also depend on how easy it is to remove the thermal energy on the cold side of the thermogenerator and whether this is done to the environment, to an oven muffle or to a hotplate should.
- a heat storage cooker 11 according to the invention is shown in a first embodiment.
- the heat storage cooker 11 has a housing 12 and a hotplate 14 on its upper side with a substructure 16.
- the hotplate 14 can be covered with a cover 17 shown in dashed lines, for example via a hinge, the cover 17 being thermally very good thermal insulation, so no heat or as little heat as possible is unnecessarily lost via the hotplate 14 when not in use.
- the heat storage cooker 11 has an oven muffle 20, which is only shown schematically.
- the heat storage cooker 11 has a heat source 22 of a conventional type, the type of heating and the heating mode of which are of no importance for the present invention.
- the heat source 22 is basically very well insulated from the outside or inside the housing 12. It can contain or has a heat accumulator of a conventional type, which is, however, not explicitly shown separately here.
- the heat source 22 is connected via a first thermogenerator 24a, possibly via a heat store, connected to the base 16 and thus to the hotplate 14 thermally or thermally.
- the heat source 22 is connected to the oven muffle 20 in a heat-conducting manner via a second thermogenerator 24b.
- thermogenerators 24a and 24b in practice either a direct coupling can be provided or possibly movable heat transfer elements, in particular made of solid metal or in the form of heat pipes or the like. It is also possible to provide only one of the thermogenerators 24a or 24b. Furthermore, they do not necessarily have to form the only thermal or heat-conducting connection between the heat source 22 and the substructure 16 of the hotplate 14 or the oven muffle 20, but it is additionally or structurally possible to provide special heat transfer elements, as are customary per se .
- a third thermal generator 24c is shown in dashed lines on the heat source 22, which, however, is applied to the outside or to the housing 12 or a corresponding housing wall. This means that it gives off its heat to the environment.
- thermogenerators 24a and 24b generate electrical energy through the temperature difference between the heat source 22 and on the one hand the substructure 16 together with the hotplate 14 in the case of the thermogenerator 24a and on the other hand the oven muffle 20 in the case of the thermogenerator 24b.
- the heat source 22 usually has a higher temperature in the case of heat storage stoves, for example 300 ° C. to 400 ° C.
- thermogenerator A The hot side of the thermogenerator is applied to the heat source 22 and a cold side to the base 16 or the oven muffle 20. Since modern thermogenerators have an efficiency of approx. 3% to 5% and 10 watts of electrical power are required, for example In order to be able to operate the controller 26, a thermal output or heat of 200 watts to 330 watts must be conducted through the thermal generator. However, this is a realistic heating value both for a hotplate 14 and for the oven muffle 20, if one takes into account that these are in any case constantly heated due to the permanent heat transfer to the heat source 22 and are therefore at temperature. If more thermal power is passed through a thermal generator, it can either generate even more electrical energy and, for example, charge the energy store 28 connected to the controller 26.
- the thermal generator can also be made smaller or for a lower continuous output. If, however, this can be generated by the thermogenerator over a very long time, the energy store 28 can be charged and, in addition, the controller 26 can then be supplied with the necessary power. In the case of such smaller thermogenerators, a further heat transfer element is then provided in addition either to the base 16 of the hotplate 14 or to the oven muffle 20 in order to conduct sufficient heat there from the heat source.
- the controller 26 is further connected to control elements 29 on the left upper side of the heat storage cooker 11, with which, for example, timer functions or sequences for the operating mode of the heat storage cooker 11 can be controlled or monitored.
- These controls 29 can be designed as electronically controlled and evaluated touch switches and possibly also one LCD or LED display, not shown, have a quasi-modern operating device for the heat storage cooker 11.
- Both the oven muffle 20 with a door and the hotplate 14 through its cover 17 can be thermally very well insulated to the outside, so that the heat storage cooker 11 emits as little heat as possible, so to speak, in the idle state. On the one hand, this could disturb the surroundings and, on the other hand, this is of course bad for the energy balance or the energy consumption of the heat storage cooker 11. If the heat storage cooker 11 is also used as room heating, of course, this does not interfere or is even planned. However, since at least in warm seasons this function is not required or may even be undesirable under certain circumstances, this effect should be able to be switched off and, moreover, the heat storage cooker 11 should not consume an unnecessary amount of energy.
- the thermal output from the heat source 22 through the thermal generators 24a and 24b to the base 16 of the hotplate 14 or to the oven muffle 20 is rather lower, since they emit little heat.
- a thermal generator 24 generates some electrical energy, even if it is only a few watts. With these, the energy store 28 can at least be charged with a longer charging time. Since the rest times of a stove usually last several times longer than the operating times, the continuous output of a thermal generator 24a or 24b in the idle state can be lower by the corresponding factor than the electrical power required by the controller 26.
- thermogenerator 24c shown in dashed lines, which just lies against the wall of the housing 12 and emits heat there, which is conducted through it by the heat source 22.
- the thermal generator is located here of course with its cold side on the housing 12, while it lies on the heat source 22 with its hot side.
- thermogenerator 24c which emits the thermal energy passed through it to the outside into the environment, does mean a certain waste of energy because the heat is just released to the environment.
- this heating output can be passed through the thermogenerator 24c and released into the room.
- thermogenerator 24c Since the cold side of the thermogenerator 24c usually has a significantly lower temperature or more thermal energy is drawn than in the case of the thermogenerators 24a and 24b, it can also be made smaller. An improved and thus more efficient design can provide that in the area of the thermogenerator 24c a conventional cooling option is provided on the housing 12, for example a separate heat sink. This third possibility is not part of the claimed invention.
- thermogenerators 24a, 24b and 24c can alternatively or arbitrarily be provided in pairs or even all three in a heat storage cooker 11.
- the three thermogenerators 24a, 24b and 24c can alternatively or arbitrarily be provided in pairs or even all three in a heat storage cooker 11.
- it can be achieved that, depending on the use of the heat storage cooker 11, ie operation of the hotplate 14 or operation of the oven muffle 20, At least temporarily, more thermal energy can flow through the thermal generator than when the heat storage cooker 11 is in the idle state.
- at least one of the thermal generators can generate somewhat more electrical energy for the controller 26 and / or for charging the energy store 28.
- two hotplates 114 are provided on a housing 112, each with a substructure 116 on the housing 112.
- a single oven muffle 120 is provided.
- two heat sources 122 or heat storage cores are provided here, each directly under one of the hot plates 114 and both adjoin the oven muffle 120.
- thermal generators 124a and 124b are only provided on the left heat source 122a, namely on a substructure 116a of the left hotplate 114a and on the left region of the oven muffle 120.
- the right heat source 122b is not connected or provided at all with thermal generators, so it cannot have any electrical ones Generate energy in the illustrated embodiment.
- the thermal generators 124a and 124b are connected to a controller 126, which has an energy store 128, similar to that in FIG Fig. 1 . Furthermore, it is connected to similar controls 129 on the top of the heat storage cooker 111.
- thermogenerator 124a is just right here.
- the heat source 122a also has the second thermogenerator 124b toward the oven muffle 120.
- thermogenerator can also be interposed to each hotplate.
- a thermogenerator can be provided only for the hotplate, which in turn is intended for the main operation due to its size or arrangement, since it is just the most frequently used. The number of thermal generators to be installed in the heat storage cooker can thus be kept lower.
- thermogenerators can be varied or adapted accordingly. If several thermogenerators are provided for a single control, electrical energy can be generated from all of them at the same time. Alternatively, mainly those thermal generators can generate electrical energy through which a particularly large amount of heat is conducted or which are connected to a hotplate or oven muffle in operation. The temperature on the cold side of the thermogenerator is lower than usual.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
- Baking, Grill, Roasting (AREA)
Claims (6)
- Cuisinière à accumulation de chaleur (11, 111) comprenant au moins une source de chaleur (22, 122a, b), laquelle possède un thermogénérateur (24a-c, 124a, 124b) ayant un côté chaud et un côté froid servant à générer de l'énergie électrique lors du fonctionnement de la source de chaleur (22, 122a, 122b) en vue d'alimenter une unité fonctionnelle (26, 28, 126, 128) électrique de la cuisinière à accumulation de chaleur (11, 111) en énergie électrique, le côté chaud se trouvant proche de la source de chaleur (22, 122a, 124b) avec un bon couplage thermique à celle-ci, caractérisée en ce que le côté froid est guidé contre un moufle de four (20, 120), une table de cuisson (14, 114a, 114b) ou un accumulateur de chaleur de la cuisinière à accumulation de chaleur.
- Cuisinière à accumulation de chaleur selon la revendication 1, caractérisée en ce qu'elle possède une commande électronique (26, 126), notamment pourvue d'une mémoire de fonctions, de programmes automatiques et/ou d'éléments d'opération (29, 129) commandés et interprétés électroniquement, de préférence sous la forme de commutateurs tactiles.
- Cuisinière à accumulation de chaleur selon la revendication 1 ou 2, caractérisée en ce qu'elle possède un accumulateur d'énergie (28, 128), de préférence sous la forme d'un accumulateur, servant à accumuler de l'énergie électrique qui est générée par le thermogénérateur (24a-c, 124a, 124b).
- Cuisinière à accumulation de chaleur selon l'une des revendications précédentes, caractérisée par plusieurs sources de chaleur (122a, 122b), le thermogénérateur (124a, 124b) étant couplé à la source de chaleur (122a, 122b) qui est configurée pour un fonctionnement continu ou le plus fréquent ou principal.
- Cuisinière à accumulation de chaleur selon l'une des revendications précédentes, caractérisée par plusieurs dissipateurs de chaleur (12, 16, 20, 112, 116, 120), le thermogénérateur (24a-c, 124a, 124b) étant couplé au dissipateur de chaleur qui, même en régime permanent, reste frais ou moins chaud de sorte qu'une différence de température suffisamment grande soit présente au niveau du thermogénérateur.
- Cuisinière à accumulation de chaleur selon l'une des revendications précédentes, caractérisée en ce qu'elle est configurée sans branchement électrique à une source d'énergie électrique provenant de l'extérieur.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010042877A DE102010042877A1 (de) | 2010-10-25 | 2010-10-25 | Wärmespeicherherd |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2444742A2 EP2444742A2 (fr) | 2012-04-25 |
EP2444742A3 EP2444742A3 (fr) | 2014-05-21 |
EP2444742B1 true EP2444742B1 (fr) | 2020-03-11 |
Family
ID=44799891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11185687.8A Active EP2444742B1 (fr) | 2010-10-25 | 2011-10-18 | Fourneau à accumulation de chaleur |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120097047A1 (fr) |
EP (1) | EP2444742B1 (fr) |
DE (1) | DE102010042877A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016135538A1 (fr) * | 2015-02-27 | 2016-09-01 | Blue Foundation S.R.L. | Four électrique |
CN108980905A (zh) * | 2018-08-01 | 2018-12-11 | 张兆生 | 自发电环保燃气灶 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825231A1 (de) * | 1977-06-10 | 1978-12-14 | Luftkonditionering Ab | Verfahren zum verbrennen von festem brennmaterial in einer geschlossenen brennkammer und ein ofen zur durchfuehrung des verfahrens |
DE3148162A1 (de) * | 1981-12-05 | 1983-06-09 | GC-Gas Control Meßgeräte für Gasflaschen GmbH, 4000 Düsseldorf | Gasheizung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1141063B (de) | 1959-11-24 | 1962-12-13 | Licentia Gmbh | Elektrisch beheizter Waermespeicherherd |
DE3544039A1 (de) * | 1985-11-08 | 1987-05-27 | Erich Poehlmann | Heiz- und/oder kochvorrichtung mit einem waermespeicherblock |
US4773847A (en) * | 1987-03-13 | 1988-09-27 | Tecogen, Inc. | Thermoelectric field burner |
US6053163A (en) * | 1999-08-04 | 2000-04-25 | Hi-Z Technology, Inc. | Stove pipe thermoelectric generator |
US20060016446A1 (en) * | 2004-07-24 | 2006-01-26 | Hu Caroline K | Gas stove with thermoelectric generator |
ITVR20070080A1 (it) * | 2007-06-06 | 2008-12-07 | Marziano Salvaro | Apparecchiatura per la cottura sottovuoto per uso domestico |
DE102007058945A1 (de) * | 2007-12-07 | 2009-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Kochstelle und Verfahren zur Temperaturregelung der Kochstelle |
DE102008039020A1 (de) * | 2008-08-21 | 2010-02-25 | Bremer Institut für Produktion und Logistik GmbH | Vorrichtung zur kombinierten Erzeugung von Wärme und Energie in Form von Elektrizität |
-
2010
- 2010-10-25 DE DE102010042877A patent/DE102010042877A1/de not_active Withdrawn
-
2011
- 2011-10-18 EP EP11185687.8A patent/EP2444742B1/fr active Active
- 2011-10-20 US US13/277,845 patent/US20120097047A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825231A1 (de) * | 1977-06-10 | 1978-12-14 | Luftkonditionering Ab | Verfahren zum verbrennen von festem brennmaterial in einer geschlossenen brennkammer und ein ofen zur durchfuehrung des verfahrens |
DE3148162A1 (de) * | 1981-12-05 | 1983-06-09 | GC-Gas Control Meßgeräte für Gasflaschen GmbH, 4000 Düsseldorf | Gasheizung |
Also Published As
Publication number | Publication date |
---|---|
EP2444742A2 (fr) | 2012-04-25 |
US20120097047A1 (en) | 2012-04-26 |
DE102010042877A1 (de) | 2012-04-26 |
EP2444742A3 (fr) | 2014-05-21 |
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