EP1313352A2 - Elément chauffant plat possédant un support calorique de forme plate et un conducteur électrique chauffant à l'intérieur de celui-ci - Google Patents

Elément chauffant plat possédant un support calorique de forme plate et un conducteur électrique chauffant à l'intérieur de celui-ci Download PDF

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Publication number
EP1313352A2
EP1313352A2 EP02090184A EP02090184A EP1313352A2 EP 1313352 A2 EP1313352 A2 EP 1313352A2 EP 02090184 A EP02090184 A EP 02090184A EP 02090184 A EP02090184 A EP 02090184A EP 1313352 A2 EP1313352 A2 EP 1313352A2
Authority
EP
European Patent Office
Prior art keywords
shaped
heat transfer
transfer medium
plate
surface element
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Withdrawn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
EP02090184A
Other languages
German (de)
English (en)
Other versions
EP1313352A3 (fr
Inventor
Uwe Lucht Jun.
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.)
Lucht Lhz & Co KG GmbH
Original Assignee
Lucht Lhz & Co KG 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 Lucht Lhz & Co KG GmbH filed Critical Lucht Lhz & Co KG GmbH
Publication of EP1313352A2 publication Critical patent/EP1313352A2/fr
Publication of EP1313352A3 publication Critical patent/EP1313352A3/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Withdrawn legal-status Critical Current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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/283—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic

Definitions

  • the invention relates to an electrically heatable surface element with a plate-shaped heat transfer medium and a heating conductor embedded therein.
  • Heated surface elements are used, for example, in electrical heaters for use.
  • a preferred area of application is so-called Area storage heaters in which they serve by feeding electrical energy to first absorb and store heat and then release it to the environment, especially if the Electron energy supply is interrupted.
  • EP 1 089 594 A2 recently describes a heating plate with a plate-shaped heating block in which a heating coil is embedded.
  • the plate-shaped heating block consists of an upper and a lower block level, each with flat surfaces.
  • the heating coil is embedded between these block levels.
  • such heating plates do not have the desired heat output.
  • the object of the invention is therefore to provide a heatable surface element to provide the type mentioned at the beginning, which with good heat absorption and storage has an improved heat emission.
  • the object is achieved by a heatable surface element solved the features of claim 1.
  • Advantageous embodiments of the heatable surface element according to the invention result from the Features of claims 2 to 6.
  • the surfaces of the two larger opposite sides of the plate-shaped heat transfer medium are waffle-like.
  • the surfaces of the narrow side surfaces in the longitudinal direction of the surface element are flat and therefore allow several surface elements according to the invention to be positioned next to one another without large gaps.
  • the waffle-like surface structure is advantageously formed by pyramid-shaped, truncated pyramid-shaped or cuboid elements each having a prismatic base area or approximately hemispherical elements having an adequate circular base area.
  • the different prismatic bases can have, for example, a square, rectangular, pentagonal or hexagonal shape.
  • Another preferred embodiment of the invention Surface element provides for the waffle-like surface of the plate-shaped Heat transfer medium with a glaze coating of matt and possibly colored Seal the structure using a ceramic firing process. This glaze cover seals the natural roughness and porosity of the ceramic carrier additionally from.
  • the plate-shaped heat transfer medium takes up only slightly, up to a maximum of 2%, moisture.
  • the heated surface element is in this respect Particularly suitable for electrical heaters that are intended for use in Wet rooms are provided.
  • the heatable surface element provides the heat transfer medium from a mixture consisting of raw clay, refractory raw clay, fine glass / porcelain flour (sodium silicate) and Talcum powder (magnesium silicate) by known ceramic Manufacturing process.
  • the preparation of the invention Surface element made from such a mixture leads to a product high density and hardness with very low porosity, which the absorption of Prevents moisture. This is not only the advantage of one much better heat absorption and thermal conductivity, but the Surface elements according to the invention have high transport security and tight connections for the electrical power supply. You leave also manufacture with a dimensional accuracy of ⁇ 1 mm.
  • the plate-shaped heat transfer medium 1 exhibits a width of 15 cm, a length of 26.5 cm and a thickness of 1.8 cm.
  • the surface structure of the large-area sides 7 and 8 of the plate-shaped Heat transfer medium 1 is formed by truncated pyramid-like elements 9 square base with a side length of approx. 4 mm each three-dimensional.
  • the heatable surface element according to the invention has a total of 441 on an area of 10 cm x 10 cm pyramid-shaped elements. Which is significant in this way enlarged surface gives the heatable surface element the opposite the state of the art significantly improved heat emission.
  • the heating conductor 2 consisting of material known per se, such as tungsten, as with the heating plates according to the prior art, serpentine and Large area embedded in the plate-shaped heat transfer medium 1 and thereby ensures when supplying the electrical energy for the most uniform heating possible of the heat transfer medium 1.
  • this was made from a mixture consisting of 34% raw clay, 35% refractory raw clay, 28% precious glass / porcelain flour (Sodium silicate) and 3% talc flour (magnesium silicate) first poured in a ceramic way, dried and then at approx. Fired at 1040 ° C.
  • composition according to the invention and the manufacturing process give the heatable surface element a specific weight of approx. 3 g / cm 3 .
  • the heatable surface element according to the invention is therefore particularly large also for equipping electrical heating devices, in particular Surface storage heaters, but also as a heating surface for other electrical Devices such as contact grills, pizza heaters and waffle irons are suitable.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cookers (AREA)
  • Surface Heating Bodies (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Resistance Heating (AREA)
  • Surface Treatment Of Glass (AREA)
  • Baking, Grill, Roasting (AREA)
EP02090184A 2001-11-14 2002-05-24 Elément chauffant plat possédant un support calorique de forme plate et un conducteur électrique chauffant à l'intérieur de celui-ci Withdrawn EP1313352A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20119328U DE20119328U1 (de) 2001-11-14 2001-11-14 Beheizbares Flächenelement
DE20119328U 2001-11-14

Publications (2)

Publication Number Publication Date
EP1313352A2 true EP1313352A2 (fr) 2003-05-21
EP1313352A3 EP1313352A3 (fr) 2005-04-13

Family

ID=7964531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090184A Withdrawn EP1313352A3 (fr) 2001-11-14 2002-05-24 Elément chauffant plat possédant un support calorique de forme plate et un conducteur électrique chauffant à l'intérieur de celui-ci

Country Status (2)

Country Link
EP (1) EP1313352A3 (fr)
DE (1) DE20119328U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003563U1 (de) 2012-04-04 2012-07-17 Lucht Lhz Elektroheizung Gmbh & Co. Kg Wärmeträger
WO2013149602A1 (fr) 2012-04-04 2013-10-10 Lucht Lhz Elektroheizung Gmbh & Co. Kg Élément caloporteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023120320A1 (de) 2023-07-31 2025-02-06 Thermotec Ag Elektrisch beheizbare Flächenspeicherheizung und Wärmespeicherkern für die Flächenspeicherheizung
DE202023104328U1 (de) 2023-07-31 2024-11-05 Thermotec Ag Elektrisch beheizbare Flächenspeicherheizung und Wärmespeicherkern für die Flächenspeicherheizung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3664013A (en) * 1970-03-06 1972-05-23 Andrew Edward Macguire Method of manufacturing electric heating panels
JPH10325605A (ja) * 1997-05-27 1998-12-08 Funai Electric Co Ltd ガラスヒータ
DE29917101U1 (de) * 1999-09-29 2000-01-13 EVO Elektroheizungen GmbH, 88487 Mietingen Heizplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003563U1 (de) 2012-04-04 2012-07-17 Lucht Lhz Elektroheizung Gmbh & Co. Kg Wärmeträger
WO2013149602A1 (fr) 2012-04-04 2013-10-10 Lucht Lhz Elektroheizung Gmbh & Co. Kg Élément caloporteur
EP2834317B1 (fr) * 2012-04-04 2020-05-27 Lucht LHZ Elektroheizung GmbH&Co. Kg Élément caloporteur

Also Published As

Publication number Publication date
DE20119328U1 (de) 2002-02-21
EP1313352A3 (fr) 2005-04-13

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