EP0714223B1 - Strahlungsheizkörper - Google Patents
Strahlungsheizkörper Download PDFInfo
- Publication number
- EP0714223B1 EP0714223B1 EP95116539A EP95116539A EP0714223B1 EP 0714223 B1 EP0714223 B1 EP 0714223B1 EP 95116539 A EP95116539 A EP 95116539A EP 95116539 A EP95116539 A EP 95116539A EP 0714223 B1 EP0714223 B1 EP 0714223B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating zone
- heating
- basic
- radiant heater
- zone
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 169
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 238000010411 cooking Methods 0.000 claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 239000002241 glass-ceramic Substances 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract 3
- 239000000523 sample Substances 0.000 abstract 1
- 230000007704 transition Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
- H01H37/48—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible rigid rods or tubes
-
- 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
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H2037/326—Thermally-sensitive members with radiative heat transfer to the switch, e.g. special absorption surfaces
Definitions
- the invention relates to a radiant heater for stoves, including cooktops or other cooking facilities are, with a flat, plate-shaped cooking surface, e.g. a glass ceramic cooktop.
- the radiant heater has a heated basic heating zone during operation and at least an optional switch-on heating zone, which for Creation of a larger total heating zone of the basic heating zone is formally adapted.
- Such radiant heaters are commonly referred to as a two-circuit radiator.
- the heating zones are provided in a support with insulation, are arranged on the heating conductor.
- the total heating zone is surrounded by a thermally insulating outer edge.
- Base- and auxiliary heating zone have a when interconnected greater total output than the basic heating zone alone.
- On Temperature limiter protrudes with an essentially rod-shaped one Sensor over at least one of the heating zones.
- GB-A-2 087 698 discloses a radiant heater according to the preamble of claim 1.
- DE 27 29 930 A describes a radiant heater, in which several troughs in a larger insulating body with heating conductors arranged therein are provided.
- the later, revoked DE 30 04 187 C describes one Radiant radiators with an auxiliary heating zone by a basic heating zone through an insulating partition is thermally completely delimited.
- EP 0 103 741 B also describes a radiant heater two concentric heating zones, from which the middle is intended as a parboil. she will turned on for parboiling alone and has one essential greater output than the radiator in continued cooking, if both zones are connected in series.
- the object of the invention is to provide a radiant heater improved thermal uniformity of the heating zones create.
- This object is achieved in that both heating zones delimited from one another in terms of area are arranged radially overlapping.
- This delimitation of both heating zones from each other can e.g. by be a rib, the height of which is at most half the distance between the insulation and the cooking surface. You could but also through a more or less wide demarcation zone be formed without any particular increase in insulation. This measure will make the base heating zone, which is mostly on the inside not clearly delimited in the direction of the auxiliary heating zone, but gets a relatively soft thermal Crossing. Above all, however, a cold zone in the area of the so far reaching up to or shortly before the glass ceramic plate Avoid webs.
- the parboiling values are also shown (Efficiency) of the entire radiant heater improved. This is partly due to the fact that the partition between the two heating zones made of a mechanically stronger insulating material had to be, the larger mass and smaller has thermal insulating properties than that in the field of Heat conductor used, now continuously formed insulation surface. The total heating zone can therefore be switched on the auxiliary heating zone continuously and essentially without gaps be heated.
- Such two-circuit radiant heaters are available in different Surface arrangements of their heating zones made. There are those e.g. a circular base heating zone and one-sided or have additional heating zones attached on both sides, to create an elongated total heating zone. Frequently but the two heating zones are also concentric with each other arranged, with the basic heating zone occupying the center. In the latter case in particular, a rod-shaped temperature sensor protrudes a temperature limiter at least on one side across both heating zones. Because the temperature limiter serves to prevent the glass ceramic plate from overheating To protect, care must be taken to ensure that both when operating the basic heating zone alone as well as during operation the overall heating zone without sacrificing performance by switching off at too low a temperature.
- a temperature limiter is already known from EP 0 141 923 B2 has become known, the sensor is so compensated that the Basic heating zone alone determines the sensor effect. To this The purpose of the sensor is in the area of the auxiliary heating zone. the thermal expansion differences ineffective by for an expansion sleeve and the rod materials inside it same or slightly higher expansion coefficients be used.
- the temperature sensor is now larger Section heated and provides as that of the pure basic heating zone for an early shutdown. This can be compensated i.e. mutual coordination of the stretch materials on the sensor or by shielding or additional Heating of the sensor can be counteracted.
- the shift path, to open the contact of the temperature limiter yes both operating states (single and dual circuit operation) as be viewed constantly.
- the sections of the route of the sensor are not in relation to the respective one Heat application. To compensate for this, now not only compensated for zero amount, but by means of of an inner rod with slightly higher expansion slightly overcompensated.
- heating conductor is particularly advantageous are thin corrugated ribbons, preferably with the Corrugated spade-shaped feet in the insulation are embedded. This makes it possible without any special Fasteners such as brackets or the like. Very quickly glowing radiator immediately in a highly effective To attach insulation, for example made of pressed Silicic acid gel exists, which are made pyrolytically can. The advantages brought about by the invention have an effect with such highly effective insulation and quickly glowing Radiant radiators especially.
- FIG. 1 and 2 show an electric radiant heater 11, which is arranged below a glass ceramic cooktop 16 and to this by means of spring means, not shown is pressed down below. It lies at the bottom of the Cooking surface 16 with an edge made of insulating material 15 on.
- the radiant heater 11 contains in a flat bowl-shaped Sheet metal shell 12 an insulation 13, which is made of a generally plate-shaped body 14 and the edge 15 is composed.
- the molded insulation body consists of a heat-resistant, thermally excellent insulating compressed bulk material from fumed silica.
- the inner surface 50 of the edge 15 can be optical be dark, e.g. by a coating or equivalent Treatment. This could not be more visible in the area Infrared radiation reflective and only in the wavelength range visible light and absorb it as a longer wave Radiate infrared again.
- the edge of the tin bowl 12 does not reach up to the glass ceramic plate 16.
- the molded body 14 contains two flat, horizontal surface areas, which are provided with heating conductors 18. Between them is a delimitation 19 in the form of a circumferential projection or web provided that is as high as the edge 17 of the Insulation molded body 14 is sufficient, but overall over the Surface 20 of the molded insulating body or the heating in heated area no more than half of the total distance between this surface 20 and the bottom of the Glass ceramic plate 16 protrudes upwards. Its height can be beneficial between a quarter and a half of the distance mentioned be.
- the delimitation 19 delimits, as can be seen from FIG. 1 central base heating zone 21 of a ring surrounding this Switch-on heating zone 22 from. Both are represented by a switch manually operated switch so that either only the basic heating zone or the basic and additional heating zone are switched on together. This will in the illustrated concentric arrangement of both heating zones 21, 22 heating surfaces of different diameters created, however, both are essentially the same power density have and are intended to be like each independent heating zone operated and regulated or controlled become.
- the control is usually done via a clocked circuit breaker, which is either only the basic heating zone 21 or the total heating zone 23, which from the heating conductors 18 connected in parallel in both heating zones is.
- the heating conductors consist of a thin corrugated band Heating conductor material and are free-radiating, i.e. without any Sheathing or shielding against the atmosphere the surface 20 of the molded insulating body 15. They have projections pointing downwards at intervals from one another or feet that are in the material of the molded body 15 penetration. These feet are at least partially in the area the wave curvature arranged and according to the corrugation bent so that they have an arched spade shape that despite the small thickness and rigidity of the heating conductor material in penetrate the surface 20 and can fix it.
- the heating conductor tape is otherwise perpendicular from the surface in front.
- connection and arrangement of the heating conductor 18 are as follows:
- the Heating conductors of the auxiliary heating zone 22 run from a connecting lug 24 of a connecting block 25 to a turning point 26 on one of the main axes 27 of the circular radiator, reverse there by 180 ° and run over half a degree Circumference back until it is on the other side of this
- the main axis in turn reach a turning point.
- the heating conductor crosses parallel semicircular paths 18 the main axis to on the other side (in Fig. 1 below) also lay five parallel tracks. Then he is with a contact 28 connected to the switch head 29 a Temperature limiter 30 belongs.
- the heating conductor runs from there on a path 31 parallel to the axis 27 to innermost heating conductor 32, which has a central projection 33 of the Insulating molded body 14 surrounds.
- the basic heating zone 21 are the loop-shaped turns are placed so that they almost the embrace the entire circumference before turning around at turning points 26. There they leave an area around axis 27 one side of the basic heating zone largely free of heating conductors. However, the heating conductor track 31 runs in this area parallel to axis 27.
- Heating conductor 18 runs parallel to axis 27 and the heating conductor track 31 over the auxiliary heating zone 22 and from there parallel to the outer edge 15 to a second contact tab 34 of the connecting block 25.
- the connections are therefore in the area the outer edge 15 or the molded body edge 17 is provided and the heating conductors are led directly to them. If it it is not desirable that e.g. in the area of the heating conductor 31 heat is generated, the heating conductor could run out there thicker or better conductive material or without Be formed corrugation.
- the delimitation rib 19 has in the area the axis 27 on the switch head 29 facing Side an exit gate 35 to pass through the heating conductor to let.
- the temperature limiter 30 has a rod-shaped sensor 36, that of the switch head along axis 27 via the auxiliary heating zone and the basic heating zone protrudes. It ends in the area the demarcation 19 before entering the auxiliary heating zone for the second time would cross. In the area of the auxiliary heating zone 22 and in the area of the base heating zone 21 near the switch head it runs between the respective turning points 26 in one, apart from the parallel heating conductor tracks 31, heating conductors free areas 37, 38.
- the temperature limiter consists of a metallic sensor tube, e.g. stainless steel, which is a larger specific Thermal expansion has as a rod 39 therein, e.g. made of ceramic (steatite) or the like.
- the differences in elongation between these materials cause two to operate contacts housed in switch head 29, one of which the actual temperature limiter contact is that at a Temperature in the order of 600 ° to 700 ° Celsius the underside of the glass ceramic hob 16 the heating switches off to avoid damage to the glass ceramic. On further contact is at much lower temperatures (below 100 ° Celsius) set to over a signal lamp or the like. To indicate the hot state of the hotplate.
- the sensor is at a distance from the surface 20 of the molded insulating body and the heating conductors. He is lying on the Center projection 33, and preferably under one certain preload, so that he thereby his exact location to Heating as fixed to the glass ceramic and on the other hand the middle region of the molded insulating body is also held down by it becomes.
- the temperature sensor is like this compensates that it is essentially in the area of the basic heating zone 21 is temperature sensitive.
- the ceramic rod 39 which as a standard of comparison against the expanding Outer sleeve 41 is used on the area of the basic heating zone 21 limited. It ends at a point 42 that approximately over the boundary 19, possibly a little towards the auxiliary heating zone offset, is to avoid that in the edge area of the Base heating zone slightly less due to radiation to the side Temperature level a shutdown when operating the basic heating zone alone at a higher temperature than at Operation of both heating zones together.
- an inner rod 43 which a material that is related to the sleeve material the thermal expansion corresponds under the given circumstances and preferably slightly higher thermal expansion behavior has, for example, a stainless steel rod. This transmits the result of the relative expansion Movement to the switches located in the switch head 29.
- This compensation can therefore be counter or over compensation cause rod 43 to expand, than the corresponding section of the sleeve.
- Fig. 2 it can be seen that the molded insulating body 14 on its underside has recesses that the projections on correspond approximately to the opposite side. This will not only help ensuring the most uniform density possible, but also a cheap stacking option at Shipping and storage of the preformed insulating body 14 created.
- 3 and 4 corresponds to that previously described in every detail with the only difference that the delimitation 19 is not by an upward directed projection is formed, but by a more or less wide, flat, unheated zone or a largely smooth transition between the two heating zones 21, 22, i.e. possibly also without an unheated intermediate area.
- the based 1 and 2 description applies otherwise also for this version.
- the radiant heater 11 works as follows:
- the user chooses the radiator size, e.g. through a Adjustment knob, in front, according to the size of a Cooking vessel 44, which stands on the glass ceramic plate 16 and provides the desired one, if necessary using the same setting element Power (relative duty cycle) on the clocking power control device on.
- a Cooking vessel 44 which stands on the glass ceramic plate 16 and provides the desired one, if necessary using the same setting element Power (relative duty cycle) on the clocking power control device on.
- the cooking vessel should be slightly larger than the actual heating zone.
- the heat transfer most important area 45 in the area of The outer circumference of the cooking vessel is usually approximately above the boundary 19 to stand.
- the heating conductor 18 glows very quickly and irradiates and through the underside of the glass ceramic plate through the cooking vessel 44.
- the glass ceramic plate a certain permeability for the radiation that occurs has, however, a part is also in the glass ceramic plate in Heat implemented as contact heat in the cooking vessel 44th penetrates. It can now be seen that in the explanations 1 to 4 in the area of delimitation 19 none cold zone occurs on the glass ceramic plate 16, which otherwise especially in the area 45, where due to the usual negatively convex shape of the cooking vessel the best heat transfer would be expected.
- An advantage of the invention is that the temperature limit due to the soft transition less sensitive to the Power distribution is basic / additional heating zone.
- Sensor for the pot detection i.e. one from setting up a cooking vessel 44 switch-on and switch-off device dependent on the hotplate, could be arranged on protrusions in the delimitation zone be without the thermally balanced total heating surface to interrupt.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electric Stoves And Ranges (AREA)
- Resistance Heating (AREA)
- Electric Ovens (AREA)
Description
- Fig. 1
- eine schematische Draufsicht auf einen Strahlungsheizkörper,
- Fig. 2
- einen diametralen Schnitt nach der Linie II in Fig. 1,
- Fig. 3
- eine schematische Draufsicht auf einen weiteren Strahlungsheizkörper und
- Fig. 4
- einen Schnitt nach der Linie IV in Fig. 3.
Claims (16)
- Strahlungsheizkörper für Herde mit einer ebenen, plattenförmigen Kochfläche, wie einer Glaskeramikkochfläche, mit einer im Betrieb stets beheizten Basisheizzone (21) und wenigstens einer wahlweise zuschaltbaren Zuschaltheizzone (22), die zur Schaffung einer größeren Gesamtheizzone (23) der Basisheizzone (21) formmäßig angepaßt ist, wobei die Heizzonen (21, 22) in einem Träger mit einer Isolation (13) vorgesehen sind, auf der Heizleiter (18) angeordnet sind und die die Gesamtheizfläche (23) in Form eines isolierenden Außenrandes (15) umgibt, und wobei die Basis- und Zuschaltheizzonen (21, 22) bei ihrer Zusammenschaltung eine größere Gesamtleistung haben als die Basisheizzone (21) allein, sowie mit einem Temperaturbegrenzer (30), dessen vorzugsweise stabförmiger Temperaturfühler (36) über wenigstens einen Teil der Basisheizzone (21) hinüberragt, dadurch gekennzeichnet, daß die flächenmäßig voneinander abgegrenzten Basis- und Zuschaltheizzonen einander strahlungsmäßig übergreifend angeordnet sind.
- Strahlungsheizkörper nach Anspruch 1, dadurch gekennzeichnet, daß Basis- und Zusatzheizzone (21, 22) bei ihrer Zusammenschaltung zueinander parallel geschaltet sind.
- Strahlungsheizkörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Abgrenzung (19) beider Heizzonen (21, 22) durch eine Rippe gebildet ist, deren Höhe maximal den halben Abstand und vorzugsweise nicht weniger als ein Viertel des Abstandes zwischen der Oberfläche (20) der Isolation (13) und der Unterseite der Kochfläche (16) einnimmt.
- Strahlungsheizkörper nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Abgrenzung (19) aus einer nicht mit Heizleitern (18) belegten Abgrenzungszone der Isolationsoberfläche (20) besteht.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Fühler (36) des Temperaturbegrenzers (30) über beide Heizzonen (21, 22) zumindest teilweise hinwegragt und im Bereich der Zuschaltheizzone (22) durch Reduzierung, Ausschaltung oder Umkehrung seiner Temperaturwirksamkeit kompensiert ist.
- Strahlungsheizkörper nach Anspruch 5, dadurch gekennzeichnet, daß der Temperaturfühler aus einer sich thermisch dehnenden metallischen Hülse (41) und wenigstens einem innenliegenden Stab (39, 43) besteht, der im temperaturwirksamen Bereich (39) aus einem Material mit geringer thermischer Dehnung, wie Keramik, und im kompensierten Bereich (43) aus einem Material mit ähnlicher, vorzugsweise etwas höherer thermischer Dehnung wie das Material der Hülse (41) besteht.
- Strahlungsheizkörper nach Anspruch 6, dadurch gekennzeichnet, daß die Hülse (41) Mittel zur Verbesserung bzw. Beschleunigung einer Wärmeübertragung zum kompensierten Bereich aufweist, vorzugsweise Durchbrüche in der Hülse (41).
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Heizleiter beider Heizzonen (21, 22) Anschlüsse aufweisen, die vom Außenrand (15) her in die Gesamtheizzone (23) hineinragen und dort direkt mit den Heizleitern (18) verbunden sind.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Zuschaltheizzone (22) die Basisheizzone (21) ringförmig umgibt.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens ein Heizleiter (18) der Basisheizzone (21) vom Außenrand (15) über die Zuschaltheizzone (22) im wesentlichen unter dem Fühler (36) des Temperaturbegrenzers (30) verläuft.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Basisheizzone (21) ein nicht oder schwächer beheizter Bereich (37) ausgebildet ist, über den sich der Temperaturfühler (36) des Temperaturbegrenzers (30) erstreckt, vorzugsweise, indem Heizleiter (18) angrenzend an diesen Bereich (37) 180°-Wendestellen (26) aufweisen.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der Zuschaltheizzone (22) ein von den Heizleitern (18) der Zuschaltheizzone (22) nicht oder schwächer beheizter Bereich (38) ausgebildet ist, über den sich der Temperaturfühler (36) des Temperaturbegrenzers (30) erstreckt, vorzugsweise indem Heizleiter (18) angrenzend an diesen Bereiche (38) 180°-Umkehrstellen (26) aufweisen.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Heizleiter (18) dünne gewellte Bänder sind, die mit vorzugsweise der Wellung angepaßten spatenförmigen Füßen in die Isolierung (13) eingebettet sind.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Temperaturfühler (36) diametral über den Strahlungsheizkörper (11) ragt und vorzugsweise nach teilweiser Überquerung der Basisheizzone (21) vor Überschreitung der Abgrenzung zur zweiten Überquerung der Zuschaltheizzone (22) endet, insbesondere kurz nach Überquerung eines aus der Isolation (13) vorstehenden Vorsprungs (33), auf dem der Temperaturfühler (36) aufliegt.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die strahlungsmäßige Überlappung von Basis- und Zuschaltheizzone (21, 22) gleichmäßig über die gesamte Abgrenzung zwischen den Heizzonen erfolgt und/oder die Gesamtheizzone (23) frei von strahlungsmäßig abgedeckten Bereichen ist.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Innenfläche (50) des Außenrandes (15) dunkel, vorzugsweise durch eine sichtbares Licht absorbierende Beschichtung bzw. Behandlung, ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4438648A DE4438648A1 (de) | 1994-10-28 | 1994-10-28 | Strahlungsheizkörper |
DE4438648 | 1994-10-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0714223A2 EP0714223A2 (de) | 1996-05-29 |
EP0714223A3 EP0714223A3 (de) | 1996-07-10 |
EP0714223B1 true EP0714223B1 (de) | 2001-02-21 |
Family
ID=6531984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95116539A Expired - Lifetime EP0714223B1 (de) | 1994-10-28 | 1995-10-20 | Strahlungsheizkörper |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0714223B1 (de) |
AT (1) | ATE199295T1 (de) |
DE (2) | DE4438648A1 (de) |
ES (1) | ES2156177T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058473B4 (de) * | 2004-11-24 | 2007-09-13 | E.G.O. Elektro-Gerätebau GmbH | Heizeinrichtung, insbesondere Strahlungsheizkörper |
GB0608522D0 (en) * | 2006-04-29 | 2006-06-07 | Ceramaspeed Ltd | Arrangement of radiant electric heaters |
DE102007018085A1 (de) * | 2007-04-17 | 2008-10-23 | BSH Bosch und Siemens Hausgeräte GmbH | Kochfeld, insbesondere Glaskeramikkochfeld |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2729930C2 (de) | 1977-07-02 | 1993-02-18 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Verfahren zur Herstellung eines elektrischen Strahlungs-Heizelementes |
US4251716A (en) * | 1978-11-30 | 1981-02-17 | General Electric Company | Self-cleaning glass-ceramic surface cooking unit |
SE8000898L (sv) | 1979-02-07 | 1980-08-08 | Micropore International Ltd | Anordning vid sleta spishellar |
GB2087698B (en) * | 1980-11-17 | 1984-03-28 | Micropore International Ltd | Electric radiant heater unit |
GB2116010B (en) * | 1982-03-02 | 1985-11-27 | Micropore International Ltd | Electric radiant heater units for use in glass ceramic top cookers |
DE3378516D1 (en) * | 1982-09-16 | 1988-12-22 | Ego Elektro Blanc & Fischer | Heating element, especially radiant heating element for the heating of ceramic plates |
AT376540B (de) * | 1983-01-05 | 1984-11-26 | Electrovac | Vorrichtung zur regelung bzw. begrenzung wenigstens eines temperaturwertes bzw. eines temperaturbereiches von strahlungs- bzw. kontaktheizkoerpern von elektrischen kochgeraeten |
IT8320567V0 (it) * | 1983-01-21 | 1983-01-21 | I R C A Ind Resistenze Corazza | Elemento riscaldante elettrico, in particolare per piani lisci di cottura. |
DE3410442A1 (de) * | 1983-09-17 | 1985-09-26 | Ego Elektro Blanc & Fischer | Temperaturfuehler, insbesondere fuer einen temperaturbegrenzer fuer eine glaskeramik-kocheinheit |
DE3705260A1 (de) * | 1987-02-19 | 1988-09-01 | Ego Elektro Blanc & Fischer | Temperaturbegrenzer |
DE3812490A1 (de) * | 1988-04-15 | 1989-11-02 | Ego Elektro Blanc & Fischer | Strahlheizkoerper |
DE3908600C2 (de) * | 1989-03-16 | 1997-01-30 | Ako Werke Gmbh & Co | Strahlungsheizeinrichtung |
DE9113992U1 (de) * | 1991-11-12 | 1992-01-02 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Strahlungs-Heizeinheit |
GB2263770B (en) * | 1992-01-23 | 1994-11-02 | Ceramaspeed Ltd | Device for controlling or limiting temperature in an electric cooking appliance |
DE4229375C2 (de) * | 1992-09-03 | 2000-05-04 | Ego Elektro Blanc & Fischer | Strahlungs-Heizkörper |
DE9313218U1 (de) * | 1992-09-03 | 1993-10-28 | E.G.O. Elektro-Geräte Blanc u. Fischer, 75038 Oberderdingen | Heizer, insbesondere für Küchengeräte |
-
1994
- 1994-10-28 DE DE4438648A patent/DE4438648A1/de not_active Withdrawn
-
1995
- 1995-10-20 EP EP95116539A patent/EP0714223B1/de not_active Expired - Lifetime
- 1995-10-20 AT AT95116539T patent/ATE199295T1/de not_active IP Right Cessation
- 1995-10-20 ES ES95116539T patent/ES2156177T3/es not_active Expired - Lifetime
- 1995-10-20 DE DE59509035T patent/DE59509035D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE199295T1 (de) | 2001-03-15 |
DE59509035D1 (de) | 2001-03-29 |
EP0714223A2 (de) | 1996-05-29 |
EP0714223A3 (de) | 1996-07-10 |
ES2156177T3 (es) | 2001-06-16 |
DE4438648A1 (de) | 1996-05-02 |
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