EP1369067A2 - Modulares Heizelement und ein solches Heizelement verwendendes Gargerät - Google Patents
Modulares Heizelement und ein solches Heizelement verwendendes Gargerät Download PDFInfo
- Publication number
- EP1369067A2 EP1369067A2 EP03011096A EP03011096A EP1369067A2 EP 1369067 A2 EP1369067 A2 EP 1369067A2 EP 03011096 A EP03011096 A EP 03011096A EP 03011096 A EP03011096 A EP 03011096A EP 1369067 A2 EP1369067 A2 EP 1369067A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- heating element
- cooking container
- element according
- food
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/016—Heaters using particular connecting means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
Definitions
- the invention relates to a heating element with a substantially rigid and flat heating surface for heating a wall, in particular the cooking container wall and such heating elements using the cooking appliance.
- a heating device for commercial kitchens is known from WO 85/05528 for heating a cooking container, in particular a saucepan or grill plate, an electrically conductive heating foil by means of a layer consisting of a vulcanizable Rubber material that is firmly vulcanized to the outer surfaces of the cooking container.
- a disadvantage of the prior art described above is that it is by vulcanization or a gluing of electrically conductive heating foils, which also with their thermal expansion coefficients are adapted to the respective cooking containers, tries to establish an optimal thermal thermal contact without this is usually permanent. This is due to the properties of the material used Plastics, whereby with frequent use of a cooking appliance with heating cycles, at which temperature differences of over 100 degrees Celsius occur, material fatigue becoming brittle or detaching of the bond layer, i.e. the vulcanization or Adhesive layer, noticeable. This places the heat input on from becoming brittle or detachment affected areas, which in turn is an above average Heating of the surrounding zones of the bond layer caused. This leads to a greater material stress and increased material wear, so that in the foreseeable future It is recommended that the entire heating layer be replaced.
- the object of the present invention is therefore the generic heating element in such a way to further develop that the disadvantages of the prior art are overcome, in particular that is simple in structure, robust against aging processes and with large areas Cooking appliances takes into account different coefficients of thermal expansion. there the greatest possible heat input into a cooking container should also be made possible.
- the heating surface of the heating element is a round, triangular, has a square and / or polygonal, preferably hexagonal, shape.
- the fastening means be a threaded bolt or comprises a bore for receiving a threaded bolt.
- Embodiments according to the invention are preferably characterized by a heater in active connection with a heating surface made of a good heat conductor and / or heat storage.
- Embodiments according to the invention are also proposed which are characterized are by electrical connections on the heating element, especially on the heater, for electrical leads, which are preferably insulated from one another.
- the heating and the heating surface via the fastening means are interconnected.
- a regulating and / or control device is preferred, via which the heating power for the heating element, preferably depending on a temperature, a humidity, the degree of browning of a food to be cooked, the weight of a food to be cooked, the size of a food to be cooked, a type of food to be cooked and / or the like, adjustable and / or controllable, is provided.
- the invention provides a cooking appliance comprising a cooking container to which a plurality are releasably attached by heating elements according to the invention supplied.
- the cooking container at least in some areas, essentially without gaps is covered with polygonal, especially hexagonal, heating elements.
- the invention is therefore based on the knowledge that by designing a rigid Heating element with fasteners in its center, i.e. geometric center, a firm connection can be achieved with a cooking container wall, in particular for large-scale cooking containers thanks to a modular structure, i.e. an arrangement of a Large number of adjacent, detachably attachable heating elements on a cooking container, one covering the entire area with a sufficiently high heating input can be achieved.
- tension due to different thermal expansions of the heating elements on the one hand and the cooking container on the other hand this avoids the fact that not one heating element in one is integrally formed on the cooking container wall to be heated, but a plurality of decoupled Individual heating elements are detachably attached. This decoupling enables e.g. can thermally warp a large wall of the cooking container locally, and still a sufficient one Thermal contact between the entirety of the heating elements and the cooking container wall is ensured.
- the heating elements are each in the form of a Hexagons are formed.
- the contact pressure gradient due to the central attachment, good thermal contact given over the entire heating surface with the cooking container wall.
- the contact pressure should be lower, which promotes detachment due to thermal deformation.
- the formation of the heating elements in the form of a hexagon / hexagon therefore ensures uniform energy input into the cooking container and thus into the food.
- the heating element according to the invention is characterized by simple assembly, so that in the event of a breakdown, an easy and quick replacement of a damaged one Heating element is made possible.
- a heating element 1 has, for example, a quadrangular, rigid and flat heating surface 2 in the form of a heat-conducting plate, on which the actual heating 3, for example in the form of a circular film, thick-film or wire heater, is arranged.
- the square design of the heating surface 2 enables a simple, tile-like arrangement of heating elements, for example for heating a large-volume cooking appliance (not shown).
- Such an arrangement of heating elements has a number of advantages, so that thermal deformations of a cooking appliance that occur mostly can be reduced with a large dimensioning of the cooking appliance and a concomitant deterioration of the contact surface.
- a bore 4 is provided for receiving a fastening device, such as in the form of a threaded bolt or a screw (not shown), with which the heating surface 2 can be attached to a wall, for example a cooking appliance base to be heated.
- the heater 3 has a central opening 5, the inner circumference of which is larger than the inner circumference of the bore 4 in the heating surface 2, so that on the heating surface 2 a certain area of the heater 3 for receiving a nut, a hexagon head of a screw or the like (not shown) remains uncovered to ensure a tight screwing of the heating element 1 to the cooking device.
- FIGs 2 and 3 show an arrangement of heating elements l'a second Embodiment on a cooking container bottom 10 ', the heating elements 1' each in the form of a hexagon are formed, so that overall a honeycomb-like structure results.
- the individual heating elements 1 ' are attached by means of threaded bolts 4' and screw nuts 5 ' attached to the bottom 10 'of the cooking container.
- the heating elements 1 'again each comprise a heater and a heating surface, which are not shown for the sake of clarity.
- Figure 3 are in Figure 3 for a heating element 1 'electrical connections 6' for electrical leads 7 'shown.
- the electrical connections 6 ' are partially designed as curved Partition 8 'isolated from each other.
- the design of the heating elements 1 'as hexagons enables a gapless joining of the individual heating elements 1 ', so that a uniform heat input into the cooking container by covering the bottom of the cooking container without gaps except for a peripheral area 10 'is delivered.
- the contact pressure of the screw connection 4 ', 5' causes a radial drop Pressure gradient profile that the pressure of each heating element 1 'against the Cooking tray bottom 10 'determined. This ensures that there is sufficient contact pressure at the points for optimal heat transfer from the heater to the heating surface of each heating element 1 'in the bottom 10' of the cooking container.
- the threaded bolt fastened in the bottom 10 'of the cooking container 4 'need not be integral with this.
- the threaded bolt can also be used the heating element preferably be rotatably mounted and the cooking container bottom have appropriate external threads for receiving the threaded bolt.
Landscapes
- Baking, Grill, Roasting (AREA)
- Cookers (AREA)
Abstract
Description
- Fig. 1
- eine Draufsicht auf eine erste Ausführungsform eines erfmdungsgemäßen Heizelementes;
- Fig.2
- eine perspektivische Ansicht einer Anordnung einer Vielzahl von erfindungsgemäßen Heizelementen einer zweiten Ausführungsform; und
- Fig.3
- eine Draufsicht auf einen Teil der Anordnung der Figur 2, wobei ein erfindungsgemäßes Heizelement mit elektrischen Anschlüssen dargestellt ist.
- 1,1'
- Heizelement
- 2
- Heizfläche
- 3
- Heizung
- 4
- Bohrung
- 4'
- Gewindebolzen
- 5
- Bohrung
- 5'
- Schraubenmutter
- 6'
- elektrischer Anschluß
- 7'
- elektrische Zuleitung
- 8'
- Trennwand
- 10'
- Garbehälterboden
Claims (9)
- Heizelement mit einer im wesentlichen starren und ebenen Heizfläche zum Beheizen einer Wand, insbesondere Garbehälterwand, gekennzeichnet durch
ein Befestigungsmittel (4, 4', 5, 5') zum lösbaren Befestigen des Heizelements (1, 1') an der Wand (10') im wesentlichen im Zentrum des Heizelements (1, 1'). - Heizelement nach Anspruch 1, dadurch gekennzeichnet, daß
die Heizfläche (2) des Heizelements (1, 1') eine runde, dreieckige, quadratische und/oder vieleckige, vorzugsweise hexagonale, Form aufweist. - Heizelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß
das Befestigungsmittel (4, 4', 5, 5') einen Gewindebolzen oder eine Bohrung zur Aufnahme eines Gewindebolzens umfaßt. - Heizelement nach einem der vorangehenden Ansprüche, gekennzeichnet durch
eine Heizung (3) in Wirkverbindung mit einer Heizfläche (2) aus einem guten Wärmeleiter und/oder Wärmespeicher. - Heizelement nach einem der vorangehenden Ansprüche, gekennzeichnet durch
elektrische Anschlüsse (6') auf dem Heizelement (1'), insbesondere auf der Heizung, für elektrische Zuleitungen (7'), die vorzugsweise gegeneinander isoliert sind. - Heizelement nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß
die Heizung (3) und die Heizfläche (2) über das Befestigungsmittel (4, 5) miteinander verbunden sind. - Heizelement nach einem der vorangehenden Ansprüche, gekennzeichnet durch
eine Regel- und/oder Steuereinrichtung, über die die Heizleistung für das Heizelement, vorzugsweise in Abhängigkeit von einer Temperatur, einer Feuchte, des Bräunungsgrades eines Gargutes, des Gewichts eines Garguts, der Größe eines Garguts, einer Gargutsart und/oder dergleichen, regelbar und/oder steuerbar ist. - Gargerät, umfassend einen Garbehälter, an den eine Vielzahl von Heizelementen nach einem der vorangehenden Ansprüche lösbar befestigt sind.
- Gargerät nach Anspruch 8, dadurch gekennzeichnet, daß
der Garbehälter zumindest bereichsweise im wesentlichen lückenlos mit vieleckigen, insbesondere hexagonalen, Heizelementen bedeckt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002125063 DE10225063B4 (de) | 2002-06-06 | 2002-06-06 | Gargerät mit modularen Heizelementen |
| DE10225063 | 2002-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1369067A2 true EP1369067A2 (de) | 2003-12-10 |
| EP1369067A3 EP1369067A3 (de) | 2004-03-31 |
Family
ID=29432665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03011096A Withdrawn EP1369067A3 (de) | 2002-06-06 | 2003-05-21 | Modulares Heizelement und ein solches Heizelement verwendendes Gargerät |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1369067A3 (de) |
| DE (1) | DE10225063B4 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869596A (en) | 1973-09-28 | 1975-03-04 | Safeway Products Inc | Cookware heater |
| WO1985005528A1 (en) | 1984-05-10 | 1985-12-05 | Kopal Försäljnings Ab | A heating device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB400738A (en) * | 1932-07-25 | 1933-11-02 | Eveson Brothers 1928 Ltd | Improvements relating to electric kettles and other electricallyheated vessels |
| GB486318A (en) * | 1936-12-05 | 1938-06-02 | Jabez Bate And Company Ltd | Improvements in and relating to electrically heated kettles, saucepans, and other vessels |
| US4268741A (en) * | 1978-08-30 | 1981-05-19 | Breville Holdings Pty. Limited | Electric fry pan |
| NL8601390A (nl) * | 1986-05-29 | 1987-12-16 | Interconnection B V | Electrische verwarmingsinrichting. |
| JPH02224716A (ja) * | 1989-02-28 | 1990-09-06 | Mitsubishi Electric Corp | 加熱調理器 |
| NL8902238A (nl) * | 1989-09-06 | 1991-04-02 | Interconnection B V | Verwarmingselement en stelsel omvattende een dergelijk verwarmingselement. |
| DE9106849U1 (de) * | 1991-05-07 | 1992-06-11 | Grass AG, Höchst, Vorarlberg | Kochzonen mit Keramikplatte |
| DE29714770U1 (de) * | 1997-08-18 | 1997-11-27 | Rieker Elektronik, 72285 Pfalzgrafenweiler | Heizeinrichtung für ein Elektrogerät und Elektrogerät zum Erwärmen einer Flüssigkeit |
-
2002
- 2002-06-06 DE DE2002125063 patent/DE10225063B4/de not_active Expired - Lifetime
-
2003
- 2003-05-21 EP EP03011096A patent/EP1369067A3/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869596A (en) | 1973-09-28 | 1975-03-04 | Safeway Products Inc | Cookware heater |
| WO1985005528A1 (en) | 1984-05-10 | 1985-12-05 | Kopal Försäljnings Ab | A heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10225063B4 (de) | 2006-03-09 |
| EP1369067A3 (de) | 2004-03-31 |
| DE10225063A1 (de) | 2004-01-08 |
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Effective date: 20040329 |