EP3771287A1 - Dispositif chauffant à rayonnement et plaque de cuisson dotée d'un tel dispositif chauffant à rayonnement - Google Patents

Dispositif chauffant à rayonnement et plaque de cuisson dotée d'un tel dispositif chauffant à rayonnement Download PDF

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Publication number
EP3771287A1
EP3771287A1 EP20184478.4A EP20184478A EP3771287A1 EP 3771287 A1 EP3771287 A1 EP 3771287A1 EP 20184478 A EP20184478 A EP 20184478A EP 3771287 A1 EP3771287 A1 EP 3771287A1
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
housing part
heating device
radiant heating
insulating
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Withdrawn
Application number
EP20184478.4A
Other languages
German (de)
English (en)
Inventor
Mathias Bellm
Volker Block
Marcus Frank
Marius Gesell
Gerd Krüger
Matthias Mangler
Jochen Rickert
Annika Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP3771287A1 publication Critical patent/EP3771287A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops
    • 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
    • H05B3/76—Plates with spirally-wound heating tubes
    • 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
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • 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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • 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
    • H05B2203/032—Heaters specially adapted for heating by radiation heating
    • 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
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to a radiant heating device and a hob which is provided with at least one such radiant heating device, preferably provided with a total of several radiant heating devices. At least one of these is then a radiant heating device according to the invention.
  • a radiant heating device for a hob is known with a temperature sensor which is arranged in a surrounding ring between two concentric heating zones.
  • An elongated so-called stick regulator is also provided here, which runs centrally over the heating zones.
  • the invention is based on the object of creating a radiant heating device for a hob mentioned at the outset and such a hob with at least one such radiant heating device, with which problems of the prior art can be solved and in particular it is possible to operate a radiant heating device safely and to record the temperature to make it as precise and responsive as possible, preferably for security reasons.
  • the radiant heating device has a flat carrier which has or forms a carrier surface on its upper side. At least one electrical or ohmic heating element is provided, which is arranged to run flat on the carrier surface, for example as a narrow metal band or coiled wire, it being possible in particular to run in a spiral or meander shape. This is known for such radiant heating devices for hobs.
  • a The outer edge of the carrier surrounds the carrier surface, all heating elements of the radiant heating device being arranged within this outer edge. The outermost surrounding boundary of the radiant heating device is therefore advantageous.
  • a temperature sensor is provided which is arranged higher than the support surface, it being possible for it to be arranged directly above it or also next to and above it. It is advantageously designed such that it can be evaluated electrically, that is to say has a temperature-dependent resistance value or another temperature-dependent electrical property. It is particularly advantageous that there is no thermomechanical probe or sensor.
  • the temperature sensor is arranged within an outer side of the outer edge, that is to say within the outer edge or also therein itself. It can thus also be an integral part of the radiant heating device.
  • the temperature sensor is the only temperature sensor or temperature sensor of the radiant heating device, so no further mechanical or electronic temperature sensor or a similar functional unit for temperature detection or limitation is provided on this radiant heating device.
  • the temperature sensor is advantageously arranged over an area that is free of heating elements; this is preferably an area of the support surface. So here no heating elements run directly below the temperature sensor or a temperature sensor housing in which the temperature sensor is arranged, that is to say in the projection of the temperature sensor or temperature sensor housing.
  • Such a temperature sensor housing covers the temperature sensor upwards and to the side and encloses it in these directions.
  • the temperature sensor housing is designed to be electrically insulating and thermally insulating at least towards the top and to the side. It is advantageous not only for its housing and precise location, but can also serve to protect it. This will be explained in more detail later.
  • the temperature sensor housing advantageously covers the temperature sensor upwards and to the side and encloses it in all directions.
  • the temperature sensor housing is at least upwards and designed to be electrically insulating and thermally insulating to the side, wherein it consists of an inner electrically insulating insulating housing part with the temperature sensor therein and an outer surrounding thermally insulating insulating housing part.
  • the temperature sensor is an NTC element or an NTC temperature sensor, which can easily be evaluated in a known manner.
  • it can also be a PTC element.
  • Such a temperature sensor can preferably have a linear characteristic curve. So it can be evaluated particularly well. Further possibilities are a PT100, PT500 or another PT resistor or thermocouple.
  • a working temperature of the temperature sensor can be between 300 ° C and 650 ° C, advantageously between 350 ° C and 600 ° C.
  • the temperature sensor can thus be in the expected range of temperatures that can occur here on the underside of the hob plate where the temperature sensor is located.
  • the temperature sensor is advantageously arranged within the outer edge, that is not next to it or outside it in a lateral direction.
  • the temperature sensor is particularly advantageously arranged above the carrier surface, that is to say higher than this and above it.
  • the temperature sensor can per se also be arranged in the outer edge, but it is preferably arranged within it.
  • the temperature sensor is arranged in the outer half or in the outer area of the support surface, that is, not directly in the middle and not in a central area.
  • the temperature sensor is particularly advantageously arranged at a point between 80% and 60% of the shortest distance, which runs between the center point of the support surface and the outer edge, away from the center point. It can therefore be arranged in the outer third or in the outer quarter.
  • the temperature sensor housing rests directly on the support surface. It can thus possibly be supported on the carrier surface or the carrier. Separate holder or the like. can be omitted. It can also be fastened there, in particular it is fastened in a form-fitting manner or by gluing. This also enables precise positioning both with respect to the radiant heating device and also with respect to a hob plate above it.
  • the temperature sensor housing can be attached to the radiant heating device by pushing it in from the side or from below.
  • the temperature sensor housing can be elongated.
  • the temperature sensor housing in particular an insulating housing part of the temperature sensor housing, can be designed to be open at the bottom towards the support surface, either with a continuous cross section or with a narrowed small opening.
  • electrical connections can be made to the temperature sensor, especially if the temperature sensor housing rests directly on the carrier. Then the opening is also closed again, so to speak, namely by the carrier or its carrier surface. Since no heating elements run under the temperature sensor housing, there is also no undesired or harmful overheating or influencing of the temperature sensor from below, which would occur directly through the heating elements and thus could cause a very high temperature. This could mean an undesirable influence on the temperature sensor that is too strong, since the heating elements of a radiant heating device can reach temperatures of over 1,100 ° C.
  • the temperature sensor housing can advantageously have thermally insulating material and electrically insulating material. In this way, the temperature sensor is protected against short circuits through contact with the heating elements. In addition, the temperature sensor can be protected from excessive influence or heating by the heating elements.
  • the temperature sensor should primarily detect the temperature on a hob plate made of glass ceramic in order to protect it from excessively high temperatures, usually above 400 ° C., by completely or partially switching off the heating elements. This is a common and well-known function on a radiant heater.
  • a temperature of a cooking vessel placed on the hob plate can be recorded through the hob plate, especially when the cooking vessel rests directly on the top of the hob plate.
  • the temperature sensor is arranged in this outer region of the radiant heating device or above the carrier surface. In this outer area, the cooking vessel is very likely to rest on the top of the hob plate, as is known.
  • the temperature sensor is particularly advantageously surrounded on the side by thermally insulating material and electrically insulating material. Towards the top, only electrically insulating material is advantageously provided above the temperature sensor, so that the temperature of the hob plate and, above all, a cooking vessel placed above it can be recorded as quickly and as effectively as possible so that temperature control can intervene quickly. In this way, a case can also be covered in which a cooking vessel that has been set up should not exceed a certain temperature because, for example, food arranged therein, in particular oil or fat, could ignite. This can happen at around 350 ° C to 385 ° C. If a temperature sensor can detect that this temperature has been reached on or in a cooking vessel, the radiant heating device can switch off. This is an advantageous function in addition to monitoring the temperature of the hob plate.
  • the temperature sensor housing can advantageously have an insulating housing part which consists of or has a thermally insulating material.
  • Layered silicate can preferably be used for this, in particular expanded layered silicate or vermiculite. Very good, stable and solid components can also be produced from this, in particular also housing parts. The thermal insulation is very good here.
  • the temperature sensor housing preferably has an insulating housing part which consists of or has an electrically insulating material, preferably ceramic. This can be a ceramic usually used for temperature-resistant insulation purposes.
  • the temperature sensor housing does not use the two materials mentioned with the different purposes of thermal insulation and electrical insulation as a mixed material or the like. contains, but is at least in two parts with at least two parts, one of which each consists of one of the materials mentioned. In this way an optimal division of the functions can be achieved.
  • the two housing parts namely insulating housing part on the one hand and insulating housing part on the other hand, at least partially as a double-layer or double-layer material arrangement which at least partially forms the temperature sensor housing.
  • This is advantageous to the side, while both materials can be provided at the top, but preferably only the electrically insulating material above the temperature sensor.
  • the thermally insulating material of the insulating housing part can then be provided next to or laterally surrounding it.
  • the temperature sensor housing advantageously has a low heat capacity or heat storage capacity, in particular towards the temperature sensor. Ceramic is particularly suitable for this. In this way, he can quickly and as directly as possible detect a temperature, preferably that of the hob plate above it and of a pot placed on top of it. Thermal insulation to the side is preferably such that at temperatures of the radiant heating elements or heating conductor strips of 1,000 ° C to 1,150 ° C there is a temperature difference of 100 ° C to 350 ° C, since temperatures of 500 ° C on the outside of the temperature sensor housing ° C to 800 ° C.
  • the temperature sensor can advantageously be designed so that it can work continuously at temperatures of 100 ° C to 350 ° C.
  • the temperature sensor is arranged completely within the insulating housing part. At least 80% of the insulating housing part can in turn be arranged in the insulating housing part; it is preferably arranged in the area in which the temperature sensor is arranged.
  • the insulating housing part can be arranged on top of the top of the insulating housing part, preferably protruding from the top or even protruding from the top.
  • a protrusion of the insulating housing part upwards over the insulating housing part can be between 0.1 mm and 3 mm. This small protrusion can be sufficient for the insulating housing part to rest on the underside of the hob plate with good thermal coupling of the temperature sensor, but not for the insulating housing part.
  • the insulating housing part advantageously has an opening at the top, into which the insulating housing part is inserted, preferably from above.
  • a laterally collar-like protruding surface area or circumferential collar of the insulating housing part can rest on the top of the insulating housing part or on top of the insulating housing part.
  • a holder is possible with a defined assignment.
  • the insulating housing part can be designed as a kind of upright sleeve with a wide collar or a protruding upper cover. This or another opening can go down through the insulating housing part for an electrical connection of the temperature sensor from below, since thermal insulation for the connection is possible here.
  • the connection can preferably take place through the carrier and the carrier surface, that is to say all the way from below through the entire radiant heating device. This means that no connections have to be routed over the heating elements or close to them.
  • the temperature sensor can be cast or completely enclosed in the insulation housing part, preferably by means of epoxy resin, a ceramic potting compound or the like.
  • the temperature sensor can be arranged airtight in the insulation housing part, whereby it is very well protected against corrosion .
  • the insulating housing part can have a wall thickness of a maximum of 3 mm, preferably a maximum of 1.5 mm, in particular also on an upper side of the insulating housing part, which should rest against the underside of the hob plate or should point towards it. It is therefore made relatively thin, especially significantly thinner than the insulating housing part. This is sufficient for electrical insulation, and a thermal conductivity is then high enough here for the above-explained temperature detection upwards.
  • the insulating housing part can have a wall thickness of a maximum of 30 mm, preferably a maximum of 8 mm to 20 mm, with in particular a maximum wall thickness of the insulating housing part being provided on the side.
  • a relatively uniform wall thickness can even be provided here. It is therefore made relatively thick.
  • a minimum wall thickness can be 4 mm, advantageously 6 mm. Thermal influence directly from the heating elements is thus relatively greatly reduced.
  • the temperature sensor housing can preferably be arranged so high on the radiant heater that it is with its top or a top point at the level of +/- 0.5 mm to +/- 2 mm of the highest level of the radiant heater or the top of the outer edge. This means that its upper side, which is thermally well coupled to the temperature sensor, is arranged relatively high up on the radiant heating device and thus fairly close to the underside of the hob plate, where the temperature is ultimately to be recorded. If the top of the temperature sensor housing is slightly higher than the top of the radiant heating device, it is ensured that it rests on the underside of the hob plate.
  • the radiant heating device is advantageously designed as an independently manageable structural unit. It can be set up and operated without additional functional units such as external temperature sensors, so to speak.
  • a hob can then also have at least one such radiant heating device and at least one conventional radiant heating device which, for example, also has an elongated thermomechanical temperature sensor or limiter.
  • the hob according to the invention also has a hob plate, on the underside of which the radiant heating device is pressed from below and in particular can rest with an upper side of its outer edge.
  • the temperature sensor or the temperature sensor housing have a maximum distance of 2 mm from the underside of the hob plate. They preferably rest on the underside of the hob plate for the aforementioned good thermal coupling.
  • a hob can have a plurality of radiant heating devices, at least one radiant heating device not being designed in accordance with the invention as described above, but having a differently designed temperature sensor or temperature sensor. This is advantageously a previously mentioned thermomechanical temperature sensor.
  • a cooktop can have mixed equipment. Possible comfort and safety functions can then be achieved primarily on the one radiant heating device according to the invention.
  • a hob 11 according to the invention can be seen in a greatly enlarged lateral sectional view.
  • the hob 11 has a hob plate 12, which advantageously consists of glass ceramic as usual.
  • the hob plate 12 has an upper side 13 and an underside 14.
  • a hotplate 16 is formed on the top 13.
  • a pot 18 is placed thereon, the bottom of which is shown in detail.
  • a radiant heating device 20 according to the invention is arranged under the hob plate 12, which is shown here only in part. However, it is essentially in accordance with Fig. 3 and 4th educated.
  • the radiant heater 20 has a carrier shell 22 made of sheet metal, as is customary, that is to say with a raised circumferential edge.
  • a carrier 23 made of special heat-insulating and highly temperature-resistant and stable material inserted.
  • the carrier 23 has an upper side 24.
  • An into the runs along an outer edge Fig. 3 and 4th The insulating edge 25 shown and placed on the top, which can and should be pressed with its top against the bottom 14 of the hob plate 12.
  • the carrier 23 has a through hole 26 which also passes through the carrier shell 22. This is explained in more detail below.
  • a temperature sensor housing 30 with a temperature sensor 40 is arranged in a free area 29 in which no heating elements 27 run on the carrier 23, placed on the carrier 23, possibly glued on. It can have the dimensions mentioned above.
  • the temperature sensor housing 30 is designed in two parts.
  • a first part, which forms the outside, is formed by an insulating housing part 32, advantageously made from expanded and pressed vermiculite. It is high temperature resistant, at the same time it has very good thermal insulation properties.
  • the insulating housing part 32 has two inclined sides 33 on the longer lateral side, so it becomes narrower from top to bottom.
  • An upper side 34 of the insulating housing part 32 is largely flat.
  • An opening 36 here advantageously designed as a round cylindrical opening 36, passes through the insulating housing part 32. When fastened, it should be aligned with the bore 26 in the carrier 23.
  • a lower insulating housing part 38a can be designed as a kind of short round tube and consist of ceramic, advantageously a solid and highly temperature-stable ceramic.
  • the insulation housing part 38a can be designed as a round cylindrical tube with a wall thickness less than 1.5 mm, advantageously just under 1 mm.
  • a further insulation housing part 38b is placed on top. This is a circular disk which is manufactured and connected in one piece with the insulating housing part 38a, alternatively they can be glued.
  • the upper, disk-like insulation housing part 38b thus acts as a type of flange. This flange or the insulating housing part 38b rests on the upper side 34 of the insulating housing part 32.
  • a wall thickness of the upper insulating housing part 38b is also advantageously in the aforementioned range, so that the overall wall thickness of both insulating housing parts is the same everywhere.
  • the tubular insulation housing part 32a fits snugly into the opening 36 and can possibly jam something therein.
  • the temperature sensor 40 rests within the insulation housing part on top of the disk-shaped insulation housing part 38b, advantageously directly on its underside. So here is a good temperature transition or heat transfer guaranteed. Furthermore, the temperature sensor 40 is potted or fastened by means of a potting compound 43 and its position is defined. The temperature sensor 40 is thus also protected mechanically and against corrosion. Furthermore, it can be ensured in this way that it actually and permanently rests on the underside of the upper insulating housing part 38b for the best possible and direct heat transfer.
  • the temperature sensor 40 can detect a temperature above itself relatively precisely and, above all, very quickly, that is to say on the insulating housing part 38b. This can be the temperature of the hob plate 12 in the area above. Due to the relatively poor thermal conductivity of glass ceramics, in particular poor transverse thermal conductivity, the temperature influences of the heating elements 27 of the radiant heating device 20 are small or negligible. Likewise, influencing the temperature of the hob plate 12 directly above the temperature sensor 40 is only very slight; temperature detection by the hob plate 12, which is a few millimeters thick, upwards, i.e. towards the pot 18 or its bottom, is more direct and predominates.
  • the temperature sensor 40 can very well detect the temperature of a pot 18 placed above it on the hotplate 16 formed by the radiant heating device 20. Due to the thermal insulation of the relatively thick insulating housing part 32, the influence of the heating elements 27 arranged laterally underneath is relatively small. In simple terms, the temperature sensor 40 thus measures a temperature of the hob plate 12 and a pot 18 placed above it much more strongly or predominantly than that of the heating elements 27 themselves.
  • thermo insulation of the temperature sensor can be achieved to the side, for which the material vermiculite or layered silicate is very suitable. Due to the arrangement of the temperature sensor itself in the thin insulating housing part made of relatively good heat-conducting ceramic, heat transfer upwards, that is to say towards the hob plate, can be very good.
  • the various views of the temperature sensor housing 30 correspond accordingly Fig. 2 show that the inclined sides 33 are only provided on the longer lateral sides. You should also place the temperature sensor housing 30 in a relatively narrow free area 29 according to the Fig. 3 and 4th allow without such a free area 29 having to be made larger. Namely, this means considerable tool costs and conversion effort.
  • the heating elements 27 come very close to the temperature sensor housing 30 and almost touch it. The upper area is due to the Inclination of the inclined sides over the closest heating elements 27, but not the temperature sensor 40 contained therein and placed in the middle between them.
  • the connecting wires 41 of the temperature sensor 40 protrude from the bottom of the temperature sensor housing 30. These are guided through the bore 26 in the carrier 23 and a corresponding opening underneath in the carrier shell 22 and are connected to a control of the hob 11, not shown, which can evaluate the temperature sensor 40.
  • the upper insulating housing part 38b rests fully on the upper side 34 of the insulating housing part 32.
  • a corresponding depression could also be provided here in this upper side 34, so that the upper insulating housing part 38b can be arranged at least partially sunk into this upper side 34.
  • the top of the insulating housing part 38b rests against the bottom 14 of the hob plate 12 and protrudes over the top of the insulating housing part 32.
  • a radiant heating device 20 is a known type of laying for the heating elements 27. They are electrically connected to a connection part 28. From this connection part 28 a free area 29 extends on the inside as far as a central area of the carrier 23.
  • elongated thermomechanical temperature sensors so-called rod regulators, can also run as far as this central area. In the embodiment shown here, however, such a rod regulator is dispensed with, the temperature sensor 40 in the temperature sensor housing 30 is the only one of the entire radiant heating device 20. It takes over all functions of the elongated thermomechanical temperature sensors mentioned. Neither mechanical nor electrically or electronically evaluable temperature sensors are additionally present here in the radiant heating device 20 according to the invention. This reduces the evaluation effort and the material costs as well as assembly costs.
  • the temperature sensor 40 arranged under the upper insulating housing part 38b is arranged relatively far outward on or above a carrier surface of the carrier 23, i.e. close to the insulating edge 25. This is around 75 in relation to the outermost turn of the heating element 27 % of the distance between the center of the carrier 23 and the inside of the insulating edge 25.
  • an erected cooking vessel or an erected pot 18 rests directly on the upper side 13 of the hob plate 12.
  • the temperature sensor 40 can detect the temperature of this pot 18 through the upper insulating housing part 38b and through the hob plate 12 via contact heat.
  • the temperature sensor 40 or The connected controller can recognize this critical temperature, possibly using correction values or compensation values. Then the control should bring about a reduction in the heating power of the radiant heater 20, possibly also cause it to be switched off.
  • Fig. 4 From the oblique view of the Fig. 4 It can be seen how the fact that the temperature sensor housing 30 is designed to be narrower towards the bottom due to the inclined sides 33, which means that a heating element can run past it very close to the connection part 28. It may run below the projection of the upper side 34 of the insulating housing part 32. It's still like that, however Fig. 3 in conjunction with the Fig. 1 shows, not below the temperature sensor 40 per se.
  • a modification of the invention is shown with a radiant heater 120, which is designed as a so-called two-circuit heater.
  • An inner circular area has inner heating elements 127a, which are patterned accordingly Fig. 3 can be relocated as indicated.
  • heating elements 127b are laid flat, again in a meandering manner.
  • the heating elements 127a and 127b are all connected to the connection part 128 or are guided to it. From there there is a connection to an electrical power supply, for example via a relay. The control takes over the switching.
  • This radiant heating device 120 also has a single temperature sensor, namely in accordance with the configuration of Figs. 1 to 4 integrated into the temperature sensor housing 130.
  • This temperature sensor housing 130 also has an insulating housing part 132 with an opening from above. An insulation housing part is inserted into this; the upper disk-shaped insulation housing part 138b is shown, in which the temperature sensor is arranged in a cast. Its electrical connection is advantageous, as described above, downward through the carrier 123 and through the carrier shell 122.
  • the temperature sensor is here at the Fig. 5 radially even further out than in Fig. 3 , which can be seen on the insulation housing part 138b. It sits, so to speak, just in front of the inner insulating edge 125a. So it is maximally close to the edge area of the outer second heating circuit with the heating elements 127b.
  • a small pot corresponding to the inner heating circuit is placed on the associated hotplate, the size of which corresponds, for example, to the inner insulating edge 125a shown in dashed lines, it can be heated by the heating elements 127a. These form a free area 129 in which the temperature sensor housing 130 is placed. The open area is clearly wider here than in the Fig. 3 , the distance to the temperature sensor housing 130 is greater.
  • the temperature sensor is arranged here at approximately 90% of the distance between the center point of the carrier 123 and the inner insulating edge 125a. So here too a small pot will rest on the upper side of a hob plate with the resulting very advantageous direct and rapid temperature measurement as explained above.
  • Such a heating device 120 can thus also correspond to FIG Fig. 5 be provided as a so-called two-circuit heating device with a single temperature sensor according to the invention, further temperature sensors or temperature sensors are not necessary. Due to the possible precise evaluation of the temperature sensor, an excessively high temperature of the hob plate, usually consisting of glass ceramic, can be detected and thus avoided. Such a dangerous temperature is between 600 ° C and 650 ° C. Furthermore, the temperature of a pot placed above it can be recorded very quickly so that it does not get hotter than intended or allowed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
EP20184478.4A 2019-07-25 2020-07-07 Dispositif chauffant à rayonnement et plaque de cuisson dotée d'un tel dispositif chauffant à rayonnement Withdrawn EP3771287A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019211101.7A DE102019211101A1 (de) 2019-07-25 2019-07-25 Strahlungsheizeinrichtung und Kochfeld mit einer solchen Strahlungsheizeinrichtung

Publications (1)

Publication Number Publication Date
EP3771287A1 true EP3771287A1 (fr) 2021-01-27

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Application Number Title Priority Date Filing Date
EP20184478.4A Withdrawn EP3771287A1 (fr) 2019-07-25 2020-07-07 Dispositif chauffant à rayonnement et plaque de cuisson dotée d'un tel dispositif chauffant à rayonnement

Country Status (3)

Country Link
US (1) US20210029783A1 (fr)
EP (1) EP3771287A1 (fr)
DE (1) DE102019211101A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750444A1 (fr) 1995-06-23 1996-12-27 E.G.O. ELEKTRO-GERÄTEBAU GmbH Corps de chauffe rayonnant et son procédé de fabrication
EP0789503A2 (fr) * 1996-02-07 1997-08-13 AKO-Werke GmbH & Co. KG Corp de chauffe rayonnant
DE10006974A1 (de) * 2000-02-16 2001-08-23 Bsh Bosch Siemens Hausgeraete Kochfeld mit Temperaturfühler
EP1258170A1 (fr) 2000-02-16 2002-11-20 BSH Bosch und Siemens Hausgeräte GmbH Ensemble plaque de cuisson dote d'un capteur de temperature
WO2004111589A1 (fr) * 2003-06-13 2004-12-23 Ceramaspeed Limited Ensemble capteur de temperature pour agencement de chauffage electrique
DE102013216258A1 (de) * 2013-08-15 2015-02-19 E.G.O. Elektro-Gerätebau GmbH Kochfeld
US20160174299A1 (en) * 2014-12-11 2016-06-16 Eika, S. Coop. Radiant heater for a cooktop

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750444A1 (fr) 1995-06-23 1996-12-27 E.G.O. ELEKTRO-GERÄTEBAU GmbH Corps de chauffe rayonnant et son procédé de fabrication
EP0789503A2 (fr) * 1996-02-07 1997-08-13 AKO-Werke GmbH & Co. KG Corp de chauffe rayonnant
DE10006974A1 (de) * 2000-02-16 2001-08-23 Bsh Bosch Siemens Hausgeraete Kochfeld mit Temperaturfühler
EP1258170A1 (fr) 2000-02-16 2002-11-20 BSH Bosch und Siemens Hausgeräte GmbH Ensemble plaque de cuisson dote d'un capteur de temperature
WO2004111589A1 (fr) * 2003-06-13 2004-12-23 Ceramaspeed Limited Ensemble capteur de temperature pour agencement de chauffage electrique
DE102013216258A1 (de) * 2013-08-15 2015-02-19 E.G.O. Elektro-Gerätebau GmbH Kochfeld
US20160174299A1 (en) * 2014-12-11 2016-06-16 Eika, S. Coop. Radiant heater for a cooktop

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US20210029783A1 (en) 2021-01-28

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