EP0056150A2 - Radiateur électrique - Google Patents

Radiateur électrique Download PDF

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Publication number
EP0056150A2
EP0056150A2 EP81110787A EP81110787A EP0056150A2 EP 0056150 A2 EP0056150 A2 EP 0056150A2 EP 81110787 A EP81110787 A EP 81110787A EP 81110787 A EP81110787 A EP 81110787A EP 0056150 A2 EP0056150 A2 EP 0056150A2
Authority
EP
European Patent Office
Prior art keywords
insulating layer
insulating body
radiator according
temperature sensor
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.)
Granted
Application number
EP81110787A
Other languages
German (de)
English (en)
Other versions
EP0056150A3 (en
EP0056150B1 (fr
Inventor
Karl(Verstorben) Fischer
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 Austria Elektrogerate GmbH
Original Assignee
EGO Austria Elektrogerate 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 Austria Elektrogerate GmbH filed Critical EGO Austria Elektrogerate GmbH
Priority to AT81110787T priority Critical patent/ATE24814T1/de
Publication of EP0056150A2 publication Critical patent/EP0056150A2/fr
Publication of EP0056150A3 publication Critical patent/EP0056150A3/de
Application granted granted Critical
Publication of EP0056150B1 publication Critical patent/EP0056150B1/fr
Expired 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
    • 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
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F24C7/067—Arrangement or mounting of electric heating elements on ranges
    • 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
    • H05B3/70—Plates of cast metal
    • 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
    • H05B2213/04—Heating plates with overheat protection means

Definitions

  • DE-OS 28 20 139 describes a radiator which consists of an insulating body carrying the electrical heating resistors, the outside of which is surrounded by a reinforcement made of a metal grid, for example a wire mesh or an expanded metal grid.
  • the present invention aims to further improve the properties of this radiator, in particular with regard to the good handling and strength as well as the insulating properties of the insulating body.
  • the insulating body which may consist of a plurality of insulating layers, is held together by the metal grid.
  • the multilayer of the insulating body makes it possible to design the insulating materials so that they are optimally used in accordance with their particular purpose.
  • an upper, relatively thin insulating layer can consist of a mechanically stronger insulating material that heats resistance, while the layer underneath is selected primarily for good insulation properties.
  • Everything is held together by the metal grille, so that there is a manageable body which can advantageously be used both as a unit which can be used directly in this form for heating the underside of a glass ceramic plate, or in conjunction with a plate made of metal with side flanges as a single hot plate can be used.
  • the metal grill not only ensures sufficient strength, but can also be grounded.
  • the invention can be used in connection with exposed heating coils as radiant heating or in connection with tubular heaters, in which the heating resistors are insulated in a mostly triangular metal jacket.
  • the top insulating layer carries the heating coils or the tubular heating elements, preferably on protruding ribs.
  • the contact radiators tubular radiators
  • sufficient pressure is ensured on the metal or glass ceramic plate by the fact that springs act on the underside of the insulating body, ie the lower part of the metal grid.
  • peripheral ribs By means of ribbing between the individual insulating layers, air spaces which are preferably enclosed by peripheral ribs can be formed, which further contribute to improving the insulating properties without increasing the thermal inertia in the slightest.
  • the ribs should, if possible, be designed in such a way that they ensure the spacing under all circumstances, for example by a combination of circular and radial ribs.
  • both the entire switch body can be arranged within the insulating body, the uppermost insulating layer possibly providing a shield for the not so temperature-resistant switch body.
  • the switch head can be arranged outside the insulating body and only the rod-shaped sensor can protrude transversely through the insulating body, preferably lying in a recess in one of the lower insulating layers, while the upper insulating layer has openings in the area of the temperature sensor in order to ensure a good and, if possible, instantaneous temperature coupling between the temperature sensor and the heating resistors.
  • additional coupling elements can be provided, such as a trough-like reflector t J Advantage t which is below the temperature sensor and this radiatively couples the manner of a parabolic mirror, or a heat conducting bridge between a tubular heater and the temperature sensor which projects through one of the openings.
  • Fig. 1 to 3 show an electric heater 11, which is used to heat a plate 12, which is an essentially flat and relatively thin-walled plate made of steel or cast material.
  • the tubular heaters consist in a known manner from inner, usually helical heating resistors 33, which lie in an electrically insulating investment material and are surrounded by a thin-walled jacket 34 made of stainless steel tube, which is pressed in a triangular shape, so that there is an upper contact surface, which the bottom 51 rests.
  • the tubular heater can be made with relatively large distances, which are larger than the width dimensions of the tubular heater itself, be arranged and still generate a sufficient power density.
  • a downwardly directed, substantially cylindrical outer edge 13 is formed, which has an oblique groove in its upper area adjacent to the cooking surface 32 for receiving an outer upper fall ring 19 made of stainless sheet metal material.
  • the plate thus has the shape of an inverted flat box, which receives the heater 52, which is designed as a coherent unit, in its interior. It has an insulating body 28 d, which in the example shown consists of two insulating layers 29, 30, which are held together by a metal grid 49 d.
  • the upper insulating layer 30 is in the form of a relatively thin disk made of a mechanically stronger temperature-resistant heat insulating material, which is pressed, for example, from mineral fibers, such as are known under the trade name "Fiberfrax". It has radially extending ribs 53 on the top, on which the tubular heating elements 31 rest. On the underside, the insulating layer 30 also has a ribbing 54, which, however, is arranged in the form of concentric circles in the example shown.
  • the insulating layers 29, 30 are held together by the metal grid 49d, which is a relatively fine-mesh steel wire mesh with mesh sizes on the order of 2 mm.
  • the metal grid 49d is deformed into the shape of a flat circular shell and takes in the two insulating layers.
  • the upper edge 58 is bent inwards over the edge of the upper insulating layer, so that the two insulating layers are held firmly together.
  • the radiator 52 is produced in such a way that a shell is first formed from the metal grid, which shell does not yet have cylindrical, but rather somewhat conical, side walls.
  • the material for the lower insulating layer 29, which consists of a material that is not mechanically strong, but which has very good insulating properties with good temperature resistance, for example an inorganic molding compound made of short fibers or powdery material, this mixture, optionally with a binder can be offset, is pressed into the metal grid shell, whereby the ribs 55 are also generated.
  • the second layer, to which the tubular body 31 is possibly already attached, is placed on top and the metal grid is deformed into its final shape with cylindrical side walls and an inwardly bent edge.
  • the bottom 58 of the metal grid 49d is profiled, so that radial or star-shaped recesses 59 are preferably formed (FIG. 3), which not only provide stiffening of the underside, but also, in cooperation with a pressure spring 25d, a securing against rotation of the radiator 28 d compared to the plate 12 d prevented.
  • the pressure spring 25d has, as can be seen from FIG. 2, the shape of a three-pointed star made of spring sheet metal, the arms of which are bent in such a way that they press with their central region against the metal grid 49d, while the arm ends are forward jumps 60 of tab-like fastening elements 44d are located, of which three are welded to the periphery at the edge 13 of the plate 12d and protrude essentially vertically downwards. At their lower end they have barbs 45 which reach through a lower cover 43 of a hob or a corresponding support bracket and thereby hold the entire radiator 11 in place. This attachment is preferably carried out resiliently by an underlying leaf spring 48.
  • the insulating body 28 d is thus pressed up by the pressure springs 25d, so that the relatively thin flexible, spirally wound tubular heating elements are pressed resiliently onto the underside 51 of the plate 12d.
  • the metal grid 49 d forms the lower surface of the insulating body and thus also of the entire radiator 11. There is therefore no need for a separate A D cover plate. Electrical safety is also ensured because the metal grid can be grounded.
  • a temperature protection switch 37 is used, which is held by the fact that its lower shoulder 61 is supported on the edge of a recess in the metal grid 49 d. As a result, its connection ends with the insulation surrounding them are freely accessible from the outside.
  • the switch body of the temperature protection switch 37 is located in a recess in the lower insulating layer 29, during which the temperature sensor, for example a bimetal element, protrudes through a narrower recess in the upper insulating layer 30 and rests on the underside of a tubular heating element 31 in order to sense its temperature as quickly as possible .
  • the upper insulating layer 30 thus protects the more temperature-sensitive switch part of the temperature protection switch against excessive heating.
  • the insulating body 28 e thus obtained is attached to the underside of a plate 12 d which, like the one according to FIGS. 1 to 3, represents a hotplate to be built into a hob.
  • the insulating body is installed in such a way that the heating resistors 33 e are at a distance from the underside 51 of the plate 12d, but this is due to the good fixing of the heating resistors 33 e to the upper insulating layer 30 e, which has no tendency to bulge, and because of the possibility of to ground the plate 12d and the metal grid 49d can be very low, so that not only the overall height is low but the radiation heat transfer to the plate 12d is very good.
  • the insulating body 28 e is fixed to the plate in that projections 60 e in the form of lateral, upright tabs of the fastening elements 44 e, which are otherwise the same as in FIG. 1, engage in recesses 62 on the outer circumference of the metal grid shell 49 d (see detail in the dash-dotted circle in Fig. 4).
  • a temperature protection switch 37 e lies flat in a recess in the lower insulating layer 29 and is completely covered by the upper insulating layer 30 e so as not to be directly exposed to the high temperatures of the heating resistors 33 e.
  • the hotplate connection 64 which consists of a conventional connecting block 65, into which the internal connecting lines 66 lead in and can be connected there to the outer connecting lines.
  • the terminal block 65 is attached to a connecting plate 67 which projects beyond the edge of the hotplate and is attached to the bottom portion 58 of the metal grid 49 d by spot welding or other fastening means. It should be noted here that the attachment of parts to the metal grid is particularly simple, since this can be easily accomplished with wood or sheet metal screws.
  • Figure 5 differs from that of Figure 4 in that instead of the lower insulating layer 29 several thin plate-shaped insulating layers 29 f pre are seen, which are each provided with mismatched profiles on their top and bottom, so that they create insulating air spaces 56 between them.
  • the insulating layers could consist of a mechanically stronger, possibly also ceramic material.
  • Fig. 6 shows an electric heater 11 g, which is pressed below a glass ceramic plate 12 g, the top of which forms the cooking surface 32 g, by means of spring elements, not shown. It lies with an upwardly projecting peripheral edge 67 of the upper insulating layer 30 g on the underside of the plate 12 g.
  • the upper insulating layer 30 g carries on its upper side in a shallow recess radially extending grooves which, as in FIGS. 4 and 5, define helical heating resistors 33 e.
  • the circular disk-shaped central part of the insulating layer 30g is crossed somewhat off-center by the rod-shaped temperature sensor 68 of a temperature switch 69, which runs in a groove 70 of the lower insulating layer 29g which can be seen in FIG.
  • the switch head of the temperature switch 69 is arranged outside the radiator.
  • FIG. 9 shows other embodiments of the arrangement of the temperature sensor 68.
  • the embodiment according to FIG. 9 corresponds to that according to FIG. 8, except for the fact that the recess 70h in the lower insulating layer is 29h larger.
  • a reflector part 74 which consists of a sheet of metal running approximately parallel to below the temperature sensor 68 with an approximately semicircular cross-section, which reflects the radiation coming in through the openings 71 i back onto the temperature sensor 68.
  • the heating element 11 k is also provided for heating a glass ceramic plate 12 g, but by means of contact heating elements designed as tubular heating elements 31, which are pressed onto the underside of the plate 12 g by ribs of the upper insulating layer 30 k.
  • An outer upright edge 67 k of the upper insulating layer 30 k closes the between Plate and insulation formed space 27 largely without, however, abutting the plate.
  • the pressure is also applied here via spring elements, not shown, from a support structure of the cooker or the built-in hob.
  • the temperature sensor 68 of the temperature switch 69 runs in a recess 70 k (FIG. 12) of the lower insulating layer 29 k.
  • the recess 70 k is connected to the space 27 via openings 71 k in the upper insulating layer 30 k.
  • a heat-conducting coupling part 76 extends through the openings 70 k. It consists of a sheet metal clamp that reaches around the temperature sensor 68 and rests on the underside of the tubular heater 31 with two flange-like bends. This ensures a secure coupling between the temperature sensor and the tubular heater.
  • the invention creates an electric radiator that has numerous advantages. It is very light, so that it can follow a glass ceramic plate even when subjected to impact stress and does not form an anvil on which the glass ceramic plate could be destroyed. Its low thermal inertia leads to good efficiency and safe and energy-saving parboiling. Efficiency is also increased by the good insulation, which at the same time results in a low floor temperature for the radiator, which can therefore also be used in lower built-in hobs without a cover plate. Nevertheless, the mechanical strength is excellent. It can be seen that in all designs the center of the circular cooking surfaces remains free, so that there can easily be provided a central sensor, for example a sensor socket of a temperature controller which is located on the underside of the plate or also breaks through it.
  • a central sensor for example a sensor socket of a temperature controller which is located on the underside of the plate or also breaks through it.
  • the multi-layer structure ideally exploits the properties of the insulating materials.
  • the thin and relatively strong upper carrier plate provides for mounting and storage of the heating resistors (coils or tubular heating elements) and is preferably pressed from a stronger long-fiber inorganic fiber, while the lower insulating layer only needs to have enough mechanical strength to cover its entire surface Total contact pressure, if there is one, must take up.
  • the metal grid takes care of all other wearing properties. In any case, a manageable unit is created, which contains the heating elements and any temperature limiters and can be easily installed and replaced.
  • the outer surfaces of the insulating body with a coating 77, for example with a heat-resistant lacquer or an organic binder layer, on its surfaces surrounded by the metal grid and possibly also on its upper side, so that insulating materials with low abrasion resistance can also be used without fear of dust.
  • This coating is preferably carried out only after the insulating body, which is pressed in the moist state, has dried out.
  • the result is a radiator with a floor temperature that is approx. 80 to 100 ° lower than that of conventional radiators. This not only improves the efficiency, but also protects the environment against high temperatures, so that less effort is required even in the wiring and the arrangement of controllers and switches.
  • the result is a radiator with a floor temperature that is approx. 80 to 100 ° lower than that of conventional radiators. This not only improves the efficiency, but also protects the environment against high temperatures, so that less effort is required even in the wiring and the arrangement of controllers and switches.
  • a radiator is shown, the heating coil of which is arranged in the form of a catchy spiral.
  • two heating coils can run essentially parallel to one another as a two-start spiral, which can also be switched on separately in order to improve the controllability.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Saccharide Compounds (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Cookers (AREA)
EP81110787A 1980-12-30 1981-12-25 Radiateur électrique Expired EP0056150B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110787T ATE24814T1 (de) 1980-12-30 1981-12-25 Elektrischer heizkoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3049521 1980-12-30
DE19803049521 DE3049521A1 (de) 1980-12-30 1980-12-30 Elektrischer heizkoerper

Publications (3)

Publication Number Publication Date
EP0056150A2 true EP0056150A2 (fr) 1982-07-21
EP0056150A3 EP0056150A3 (en) 1983-01-12
EP0056150B1 EP0056150B1 (fr) 1987-01-07

Family

ID=6120563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110787A Expired EP0056150B1 (fr) 1980-12-30 1981-12-25 Radiateur électrique

Country Status (11)

Country Link
US (1) US4447711A (fr)
EP (1) EP0056150B1 (fr)
JP (1) JPS57134886A (fr)
AT (1) ATE24814T1 (fr)
AU (1) AU548785B2 (fr)
DE (2) DE3049521A1 (fr)
ES (1) ES508395A0 (fr)
FI (1) FI814160L (fr)
GR (1) GR76103B (fr)
YU (1) YU310481A (fr)
ZA (1) ZA818992B (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113414A1 (de) * 1981-04-03 1982-11-04 Karl 7519 Oberderdingen Fischer Elektrokochplatte
DE3223417A1 (de) * 1982-06-23 1983-12-29 Karl 7519 Oberderdingen Fischer Elektrokochplatte
GB2132060B (en) * 1982-12-24 1985-12-18 Thorn Emi Domestic Appliances Heating apparatus
DE3703768A1 (de) * 1987-02-07 1988-08-18 Fissler Gmbh Vorrichtung zum erfassen der temperatur einer mittels heizwicklungen oder halogenlampen aufgeheizten glaskeramikplatte
KR970008839B1 (en) * 1994-04-27 1997-05-29 Korea Inst Sci & Tech Heater for chemical deposition
FR2760957B1 (fr) * 1997-03-21 1999-10-01 Moulinex Sa Appareil de cuisson electrique
US6614007B1 (en) 1999-02-17 2003-09-02 The Garland Group Griddle plate with infrared heating element
GB2361160B (en) * 2000-04-03 2004-11-03 Ceramaspeed Ltd Radiant electric heater
DE10127223A1 (de) * 2001-05-22 2003-01-23 Ego Elektro Geraetebau Gmbh Heizungseinrichtung für Filterelemente eines Partikelfilters und Partikelfilter
US7780440B2 (en) * 2004-10-19 2010-08-24 Canon Anelva Corporation Substrate supporting/transferring tray
DE102005005520A1 (de) 2005-02-01 2006-08-10 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung mit Temperatursensor und Kochfeld mit Heizeinrichtungen
DE102005042799A1 (de) † 2005-09-08 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Universalhalter für Kochfelder
US8049143B2 (en) * 2007-10-29 2011-11-01 Smiths Medical Asd, Inc. Hot plate heater for a respiratory system
US9296154B1 (en) * 2008-08-07 2016-03-29 Mcelroy Manufacturing, Inc. Tapered wattage radial heater
CN201365481Y (zh) * 2009-02-13 2009-12-23 东莞市前锋电子有限公司 电磁式烧烤炉
DE102010063454B4 (de) 2010-12-17 2022-02-03 BSH Hausgeräte GmbH Strahlungsheizkörper für ein Kochfeld sowie Kochfeld
US20130192584A1 (en) * 2012-01-26 2013-08-01 General Electric Company Heating element mounting features for a cook top appliance
USD787041S1 (en) 2015-09-17 2017-05-16 Whirlpool Corporation Gas burner
US10837651B2 (en) 2015-09-24 2020-11-17 Whirlpool Corporation Oven cavity connector for operating power accessory trays for cooking appliance
US11777190B2 (en) 2015-12-29 2023-10-03 Whirlpool Corporation Appliance including an antenna using a portion of appliance as a ground plane
US10757761B2 (en) * 2016-01-14 2020-08-25 Techyidco Llc Apparatus and method for safely warming food
US10145568B2 (en) 2016-06-27 2018-12-04 Whirlpool Corporation High efficiency high power inner flame burner
GB2560154A (en) * 2017-02-05 2018-09-05 Stuart Morris Gary Single sided food warming hotplate
US10551056B2 (en) 2017-02-23 2020-02-04 Whirlpool Corporation Burner base
US10451290B2 (en) 2017-03-07 2019-10-22 Whirlpool Corporation Forced convection steam assembly
US10660162B2 (en) 2017-03-16 2020-05-19 Whirlpool Corporation Power delivery system for an induction cooktop with multi-output inverters
US10627116B2 (en) 2018-06-26 2020-04-21 Whirlpool Corporation Ventilation system for cooking appliance
US10619862B2 (en) 2018-06-28 2020-04-14 Whirlpool Corporation Frontal cooling towers for a ventilation system of a cooking appliance
US10837652B2 (en) 2018-07-18 2020-11-17 Whirlpool Corporation Appliance secondary door

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2163036A (en) * 1934-06-21 1939-06-20 Herman A Sperlich Electric heater
US2261496A (en) * 1938-11-23 1941-11-04 Arthur H Happe Electric heating unit
DE2740163A1 (de) * 1977-03-09 1978-09-14 Emerson Electric Co Heizelement mit offener heizspule
DE2820139A1 (de) * 1978-05-09 1979-11-15 Karl Fischer Elektrischer heizkoerper

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US3384737A (en) * 1965-04-14 1968-05-21 Doutre Adelard Electric stove with heating metallic plates
DE1301404C2 (de) * 1967-01-05 1974-06-06 Gustav Dipl Ing Massekochplatte mit einem Temperaturregler
BR6896943D0 (pt) * 1967-03-25 1973-12-26 Ag Siemens Pirometro de resistencia eletrica
US3646321A (en) * 1970-06-22 1972-02-29 Gen Motors Corp Infrared surface heating unit
US3612829A (en) * 1970-07-17 1971-10-12 Gen Motors Corp Ceramic top infrared cooking assembly
US3612826A (en) * 1970-07-17 1971-10-12 Gen Motors Corp Surface temperature indicator light for ceramic top infrared radiant range
US3632983A (en) * 1970-10-13 1972-01-04 Gen Electric Smooth surfaced, heated cooktop
GB1433478A (en) * 1972-08-05 1976-04-28 Mcwilliams J A Electrical heating apparatus
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
US4032750A (en) * 1976-03-26 1977-06-28 General Electric Company Flat plate heating unit with foil heating means
US4166878A (en) * 1976-10-01 1979-09-04 Caterpillar Tractor Co. Gas turbine engine internal insulation comprising metallic mesh--restrained ceramic fiber layer
DE2729929C3 (de) * 1977-07-02 1981-10-08 Karl 7519 Oberderdingen Fischer Strahlungs-Heizeinheit für Glaskeramik-Elektrokochgeräte
SE7806238L (sv) * 1977-07-02 1979-01-03 Fischer Karl Elektriskt stralningsvermeelement, serskilt for glaskeramikkokhell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163036A (en) * 1934-06-21 1939-06-20 Herman A Sperlich Electric heater
US2261496A (en) * 1938-11-23 1941-11-04 Arthur H Happe Electric heating unit
DE2740163A1 (de) * 1977-03-09 1978-09-14 Emerson Electric Co Heizelement mit offener heizspule
DE2820139A1 (de) * 1978-05-09 1979-11-15 Karl Fischer Elektrischer heizkoerper

Also Published As

Publication number Publication date
JPS57134886A (en) 1982-08-20
FI814160L (fi) 1982-07-01
ZA818992B (en) 1982-11-24
ES8302993A1 (es) 1982-12-01
US4447711A (en) 1984-05-08
ES508395A0 (es) 1982-12-01
DE3049521A1 (de) 1982-07-29
EP0056150A3 (en) 1983-01-12
ATE24814T1 (de) 1987-01-15
GR76103B (fr) 1984-08-03
EP0056150B1 (fr) 1987-01-07
YU310481A (en) 1984-12-31
AU7880481A (en) 1982-07-08
AU548785B2 (en) 1986-01-02
DE3175825D1 (en) 1987-02-12

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DE102010063454B4 (de) Strahlungsheizkörper für ein Kochfeld sowie Kochfeld

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