EP2343950A1 - Elément de chauffage électrique et son procédé de fabrication - Google Patents

Elément de chauffage électrique et son procédé de fabrication Download PDF

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Publication number
EP2343950A1
EP2343950A1 EP11150126A EP11150126A EP2343950A1 EP 2343950 A1 EP2343950 A1 EP 2343950A1 EP 11150126 A EP11150126 A EP 11150126A EP 11150126 A EP11150126 A EP 11150126A EP 2343950 A1 EP2343950 A1 EP 2343950A1
Authority
EP
European Patent Office
Prior art keywords
layer
ceramic substrate
heating element
glass layer
resistance
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Withdrawn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
EP11150126A
Other languages
German (de)
English (en)
Inventor
Klauß Aßmann
Armin Barnert
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.)
HE System Electronic GmbH and Co KG
Original Assignee
HE System Electronic GmbH and Co KG
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 HE System Electronic GmbH and Co KG filed Critical HE System Electronic GmbH and Co KG
Publication of EP2343950A1 publication Critical patent/EP2343950A1/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Withdrawn legal-status Critical Current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 plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
    • 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
    • H05B2203/013—Heaters using resistive films or coatings
    • 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
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49083—Heater type

Definitions

  • the invention relates to an electrical heating element which is designed as a surface piece. Furthermore, the invention relates to a process for its preparation.
  • Electric heating elements can be designed, for example, as heaters, auxiliary heaters or additional heaters and should be at least comparatively easy to manufacture, as reliable as possible and as wear-resistant as possible.
  • Electric heating elements such as heaters, auxiliary heaters or additional heaters may according to the prior art, for example, comprise a support member made of steel or ceramic, for example ceramic tubes, which is printed with a resistance material. To protect against environmental influences usually paint or sintered layers are applied.
  • the surface heating element consists of a non-conductive support and a surface applied thereon electrically conductive layer, which acts as a resistance heater.
  • the electrically conductive layer is formed from a thick layer applied in pasty state.
  • the surface heating element has a low dielectric strength and also a short life.
  • a ceramic heater element with two ceramic layers is known in which a resistance heating element is embedded between the ceramic layers.
  • the resistance heating element is made essentially of metal.
  • the two ceramic layers are provided as powder compacts and then sintered. For sintering temperatures of over 1500 ° C are required. In addition, special tools are needed. This method is thus complicated and expensive. Furthermore, shrinkage occurs during sintering, so that the dimensional tolerances achieved are more than 1%, which is unacceptable for most applications.
  • the invention has for its object to provide an electric heating element and to provide a method for its production, by which the above-mentioned disadvantages are overcome.
  • the low-melting glass layer covers the resistance layer completely or at least almost completely, so that particularly preferably the resistance layer is an integral part of the glass layer.
  • the second ceramic substrate covers the glass layer completely or at least almost completely and / or the second ceramic substrate is fused to the glass layer.
  • the second ceramic substrate allows a high dielectric strength. Electrical voltages of more than 500 V are possible. A preferred complete coverage of the resistive layer through the glass layer allows uniform introduction of heat into the second ceramic substrate.
  • the layer structure improves the mechanical stability of the heating element. The arrangement between the ceramic substrates, the heating element is protected from environmental influences.
  • the first and / or second ceramic substrate is made of alumina (Al 2 O 3 ).
  • Al 2 O 3 substrates can be used in the fired state. These are available in particular with the dimensions 4 "x4" or 4 "x6".
  • the heating element can thereby be manufactured with conventional materials.
  • the resistance layer can be made of a resistance paste.
  • the resistance paste may have particles which, for example, have a particle size between 2 ⁇ m and 5 ⁇ m.
  • the glass layer may comprise a material having a melting point between 500 ° C and 700 ° C.
  • the low-melting glass layer completely covers the resistance layer and serves as a connecting element to the second ceramic substrate.
  • the resistance layer is completely or at least almost completely covered by the glass layer, so that particularly preferably the resistance layer becomes an integral part of the glass layer.
  • the second ceramic substrate is connected to the glass layer, in particular fused.
  • the addition of the second ceramic substrate results in a layer structure which allows for improved mechanical stability and high dielectric strength. Electrical voltages of more than 500 V are possible. By preferably completely covering the resistance layer by the glass layer, a uniform introduction of heat into the second ceramic substrate is made possible. The arrangement between the ceramic substrates, the heating element is protected from environmental influences.
  • the first and / or second ceramic substrate is made of alumina (Al 2 O 3 ).
  • Al 2 O 3 substrates can be used in the fired state. These are available in particular with the dimensions 4 "x4" or 4 "x6".
  • the heating element can be manufactured in this way with commercially available materials.
  • the glass layer In particular, a material having a melting point between 500 ° C and 700 ° C is used for the glass layer.
  • the low-melting glass layer completely covers the resistance layer and, on the other hand, serves as a connecting element to the second ceramic substrate.
  • the resistive layer of a pasty material is applied to the first ceramic substrate.
  • the resistance paste usually has particles which, for example, have a particle size between 2 ⁇ m and 5 ⁇ m.
  • printed conductors for further electrical and / or electronic components and / or further electrical connections can also be printed with the resistance layer.
  • FIG. 1 is a plan view of a heating element according to a preferred embodiment of the invention shown.
  • the heating element 1 comprises a first region 10 with electrical connections and preferably with an electronic circuit for controlling and / or regulating the heating element. Furthermore includes the heating element 1, a second area 12 with the actual heating element.
  • the heating element 1 with the first and second regions 10 and 12 is 152 mm long and 24.5 mm wide.
  • the second region 12, i. the actual heating element is in this example 126.5 mm long and 24.5 mm wide.
  • FIG. 2 shows a side sectional view of the heating element 1 according to the preferred embodiment of the invention.
  • FIG. 2 illustrates the layer structure of the heating element according to the invention.
  • the layer thickness of the heating element is much thicker than in a scale representation.
  • the heating element 1 comprises a first ceramic substrate 14, a resistance layer 16, a low-melting glass layer 18 and a second ceramic substrate 20.
  • the first ceramic substrate 14 is made in a fired state, and preferably made of alumina (Al 2 O 3 ).
  • the resistance layer 16 comprises a resistance material.
  • the resistance layer is made of a resistor paste.
  • the resistance paste may have particles having a particle size between 2 microns and 5 microns.
  • the ohmic resistance of the resistive layer 16 is about 120 ⁇ , for example.
  • the glass layer 18 is made of a low-melting glass. Preferably, the melting point is between 500 ° C and 700 ° C.
  • the resistance layer 16 is an integral constituent part of the glass layer 18.
  • the second ceramic substrate 20 in this specific embodiment preferably has the same properties as the first ceramic substrate 14 and is connected to the glass layer 18, in particular fused.
  • the first ceramic substrate 14 and the second ceramic substrate 20 have a layer thickness of 0.635 mm.
  • the glass layer 18 has a layer thickness of 0.075 mm in this example.
  • the resistance layer 16 has a layer thickness of 0.02 mm in this embodiment. In this case, the resistance layer 16 is integrated in the glass layer 18, so that the 0.02 mm of the resistance layer 16 are contained in the 0.075 mm of the glass layer 18.
  • the total layer thickness of the heater element in this embodiment is 1.345 mm.
  • the electrical heating element according to the invention and the method for its production allow improved mechanical stability, increased electrical strength and protection of the heating element from environmental influences.
  • the heating element can be treated with a laser.
  • the laser treatment can refer either to the mechanical shaping or the adjustment of the resistance value.
  • the setting of the resistance value in this case takes place before the glass layer and / or the second ceramic element is applied.
  • the heating element according to the invention may in particular be a heater, an additional heater or a heater.
  • the electrical heating element there are a number of different fields of application for the electrical heating element according to the invention. These include, for example, appliances, in particular household appliances, such as hair dryers or fan heaters.
  • the electric heating element according to the invention can be used for heating systems in vehicles. This is exemplified by the use in trains or motor vehicles.
  • the electric heating element according to the invention can therefore also be used as additional heating or auxiliary heating.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
EP11150126A 2010-01-11 2011-01-04 Elément de chauffage électrique et son procédé de fabrication Withdrawn EP2343950A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010000042A DE102010000042A1 (de) 2010-01-11 2010-01-11 Elektrisches Heizungselement und ein Verfahren zu dessen Herstellung

Publications (1)

Publication Number Publication Date
EP2343950A1 true EP2343950A1 (fr) 2011-07-13

Family

ID=43770602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11150126A Withdrawn EP2343950A1 (fr) 2010-01-11 2011-01-04 Elément de chauffage électrique et son procédé de fabrication

Country Status (3)

Country Link
US (1) US20110168692A1 (fr)
EP (1) EP2343950A1 (fr)
DE (1) DE102010000042A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150013764A (ko) 2012-05-14 2015-02-05 베르-헬라 테르모콘트롤 게엠베하 전기 차량 히터, 특히 하이브리드 드라이브 또는 전기 드라이브를 갖는 차량용 전기 차량 히터

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR764622A (fr) * 1933-11-04 1934-05-25 Doherty Res Co élément électrique chauffant
GB418866A (en) * 1933-10-26 1934-11-01 Doherty Res Co Improvements in electric hot plates and similar heaters
CH389116A (de) * 1957-02-05 1965-03-15 Kanthal Ab Elektrischer Widerstand
DE3545267A1 (de) 1985-12-20 1987-06-25 Krups Stiftung Durch strom aufheizbares flaechenheizelement
GB2343352A (en) * 1998-10-06 2000-05-03 Otter Controls Ltd Two stage thick film element for a percolator
US6118109A (en) * 1996-03-25 2000-09-12 Rohm Co., Ltd. Heating device for sheet material
FR2862374A1 (fr) * 2003-11-18 2005-05-20 Kj Soc Panneau chauffant et son procede de fabrication
EP0914021B1 (fr) 1997-10-28 2005-10-12 NGK Spark Plug Co. Ltd. Elément de chauffage céramique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329424A1 (de) * 1973-06-08 1975-01-02 Siemens Ag Widerstand, insbesondere flaechenheizelement mit hoher belastbarkeit
NL8801182A (nl) * 1987-10-01 1989-05-01 Interconnection B V Verwarmingselement.
DE19720880A1 (de) * 1997-05-17 1998-11-19 Ego Elektro Geraetebau Gmbh Elektrisches Heizelement
DE19727913A1 (de) * 1997-07-01 1999-01-07 Daimler Benz Ag Keramikgehäuse und Verfahren zu seiner Herstellung
JP2001196152A (ja) * 2000-01-13 2001-07-19 Sumitomo Electric Ind Ltd セラミックスヒータ
US7106167B2 (en) * 2002-06-28 2006-09-12 Heetronix Stable high temperature sensor system with tungsten on AlN

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB418866A (en) * 1933-10-26 1934-11-01 Doherty Res Co Improvements in electric hot plates and similar heaters
FR764622A (fr) * 1933-11-04 1934-05-25 Doherty Res Co élément électrique chauffant
CH389116A (de) * 1957-02-05 1965-03-15 Kanthal Ab Elektrischer Widerstand
DE3545267A1 (de) 1985-12-20 1987-06-25 Krups Stiftung Durch strom aufheizbares flaechenheizelement
US6118109A (en) * 1996-03-25 2000-09-12 Rohm Co., Ltd. Heating device for sheet material
EP0914021B1 (fr) 1997-10-28 2005-10-12 NGK Spark Plug Co. Ltd. Elément de chauffage céramique
GB2343352A (en) * 1998-10-06 2000-05-03 Otter Controls Ltd Two stage thick film element for a percolator
FR2862374A1 (fr) * 2003-11-18 2005-05-20 Kj Soc Panneau chauffant et son procede de fabrication

Also Published As

Publication number Publication date
US20110168692A1 (en) 2011-07-14
DE102010000042A1 (de) 2011-07-14

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