EP0866640A2 - Elément chauffant à haute performance - Google Patents

Elément chauffant à haute performance Download PDF

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Publication number
EP0866640A2
EP0866640A2 EP97115173A EP97115173A EP0866640A2 EP 0866640 A2 EP0866640 A2 EP 0866640A2 EP 97115173 A EP97115173 A EP 97115173A EP 97115173 A EP97115173 A EP 97115173A EP 0866640 A2 EP0866640 A2 EP 0866640A2
Authority
EP
European Patent Office
Prior art keywords
heating element
paper
element according
jacket
ceramic fiber
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Withdrawn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
EP97115173A
Other languages
German (de)
English (en)
Other versions
EP0866640A3 (fr
Inventor
Frank Dipl.-Ing. Rommeiss
Michael Dipl.-Ing. Neuhäuser
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.)
Ihne & Tesch GmbH
Original Assignee
Ihne & Tesch 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 Ihne & Tesch GmbH filed Critical Ihne & Tesch GmbH
Publication of EP0866640A2 publication Critical patent/EP0866640A2/fr
Publication of EP0866640A3 publication Critical patent/EP0866640A3/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Withdrawn legal-status Critical Current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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • 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
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H05B3/565—Heating cables flat cables

Definitions

  • the invention relates to a high-performance heating element for industrial purposes with a Coat of metal and in this coat against the Jacket arranged electrically insulated electric heating conductor with outside Connection, especially heating tape, preferably for Use in plastic injection molding machines.
  • Such heating elements are so far made that in a plate-like, to the The ends of the open jacket are wound on a support Heating conductor is introduced, the Connection ends are led to the outside. In the Then there will be free space between the heating conductor and the jacket MgO powder introduced This is then Element compacted. In the following it can Heating element by bending to the appropriate Forming tubular radiators or the like and with electrical connections be equipped.
  • the insulating layers by the MgO powder are good electrical Ensure insulation to the metal outer jacket, the usually consists of stainless steel. Furthermore the insulating layer must have good thermal conductivity to have the heat transfer to the favor heating object.
  • the heating elements produced in a conventional manner are only of limited dimensions producible. With conventional construction only Lengths of 75 mm and diameter of 100 mm getting produced. In half-shell construction, the Diameter range can be expanded to 200 mm.
  • the object of a heating element Generic type to create which in easily in long lengths and diameters can be manufactured.
  • the invention proposes to achieve this object before that the insulation from a single layer or multilayer ceramic fiber fleece or Ceramic fiber paper exists and that Ceramic fiber fleece or ceramic fiber paper between the jacket surfaces of the jacket compressed in Heating element is arranged
  • the ceramic fiber fleece or paper consists of Al 2 0 3 fibers, MgO fibers, mullite fibers (2 Si 0 2 x 3 Al 2 0 3 ) or a mixture thereof.
  • the Nonwoven or paper is free from binders.
  • the fibers of the Nonwoven or paper are short-fiber.
  • the fiber length is about 2 to Is 3 ⁇ m.
  • the powder Material consists of ceramic mass.
  • the powdery material consists of Mg0 and / or Al 2 0 3 .
  • the powder Material on the side of the heating element in that Nonwoven or paper is introduced or in is brought in larger proportion, which to heating object is facing or on this is in the position of use.
  • the Nonwoven or paper in non-compressed Condition has a thickness of up to 5 mm.
  • the nonwoven or -paper in an uncompressed state Porosity of up to 50% by volume.
  • the heating element subsequently into a ring shape, Half ring shape or channel shape is bent.
  • the invention also relates to the use of ceramic fiber fleece or paper for production of heating elements according to one of claims 1 to 11, in particular with the method according to one of the Claims 12 to 14.
  • the invention makes it possible in a simple manner to produce large-area heating elements, that is have great length and with them also great Diameter of tubular radiators or half-shells too are realized.
  • This Heating elements can be started first Cladding sheet a layer of nonwoven or the same or several layers will.
  • Carrier for example a micanite carrier that is wrapped with heating wire.
  • Carriers can in turn add layers of Nonwoven or the like can be applied then covered by another sheet metal will.
  • the nonwoven or fiber paper which in the is a thermal insulator, then compacted by the cladding sheets towards each other be pressed. The entire component is thus in reduced in thickness and by that Compressing the lateral surface results in that the ceramic fiber fleece or paper is compressed in this way is that it's no longer heat insulating, but acts as a heat conductor, but the electrical Insulation ability is retained.
  • Nonwoven fabric made of Al 2 0 3 fibers is preferably processed without a binder, so that no pollutants can evaporate when the heating element is first heated. It has turned out to be particularly advantageous if short-fiber material of, for example, 2 to 3 ⁇ m fiber length is used.
  • powdered material for example Al 2 0 3 powder
  • This improved heat conduction does not make sense to the outside of the element, on the contrary, poor heat conduction is desired there in order to avoid heat losses.
  • a high performance heating element 1 shown for industrial purposes. It has one Coat made of stainless steel and in this coat against the Jacket electrically insulated arranged Heating conductor.
  • the jacket formed from two components.
  • One component is a U-shaped jacket part 2 made of stainless steel.
  • a second part of the coat is a flat sheet metal part 3, also made of Stainless steel.
  • To make it into the U-shaped Sheath part 2 first a layer 4 on nonwoven (single-layer or multi-layer).
  • a carrier 5 for example a Micanite carrier placed on the heating wire is wound up.
  • the connection ends of the heating wire are led to the outside and can with appropriate electrical connections will.
  • a ceramic fiber fleece layer 6 is placed on top, which by the sheet metal part 3 as part of Coat is covered. After inserting the parts the ceramic fiber fleece layers are compressed 4.6 by applying force in the direction of arrow 7 in FIG. 1, the jacket plate 3 the bottom of the cladding sheet 2 is approximated.
  • the Target position is shown in Figure 2. For Locking this target position can Edge edges of the U-shaped part 2 are formed are, so that the narrow packing position according to Figure 2 is maintained. That so flat trained heating element can be in one corresponding rolling process to a tubular Radiator or to a radiator half-shell be shaped.
  • the invention is not based on the embodiment limited, but within the scope of the revelation often variable.
EP97115173A 1997-03-19 1997-09-02 Elément chauffant à haute performance Withdrawn EP0866640A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19711420 1997-03-19
DE19711420 1997-03-19

Publications (2)

Publication Number Publication Date
EP0866640A2 true EP0866640A2 (fr) 1998-09-23
EP0866640A3 EP0866640A3 (fr) 1999-01-13

Family

ID=7823882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115173A Withdrawn EP0866640A3 (fr) 1997-03-19 1997-09-02 Elément chauffant à haute performance

Country Status (1)

Country Link
EP (1) EP0866640A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11505899B2 (en) 2018-12-05 2022-11-22 Nvent Services Gmbh Anti-icing surface with polymeric supports
WO2023222906A1 (fr) * 2022-05-19 2023-11-23 Finar Module Sagl Dispositif de résistance de puissance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB283312A (en) * 1926-11-20 1928-01-12 Santon Ltd Improvements connected with electrical heating elements
US3872281A (en) * 1974-06-05 1975-03-18 John W Krieg Band type electric heaters
US4203197A (en) * 1976-03-18 1980-05-20 Fast Heat Element Mfg. Co., Inc. Method for making a ceramic bond heater
JPH03187180A (ja) * 1989-12-15 1991-08-15 Matsushita Electric Ind Co Ltd 調理用ホットプレート
EP0483621A2 (fr) * 1990-11-02 1992-05-06 Watlow Electric Manufacturing Company Assemblage de chauffage, en particulier sous forme de bande ou de ruban

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB283312A (en) * 1926-11-20 1928-01-12 Santon Ltd Improvements connected with electrical heating elements
US3872281A (en) * 1974-06-05 1975-03-18 John W Krieg Band type electric heaters
US4203197A (en) * 1976-03-18 1980-05-20 Fast Heat Element Mfg. Co., Inc. Method for making a ceramic bond heater
JPH03187180A (ja) * 1989-12-15 1991-08-15 Matsushita Electric Ind Co Ltd 調理用ホットプレート
EP0483621A2 (fr) * 1990-11-02 1992-05-06 Watlow Electric Manufacturing Company Assemblage de chauffage, en particulier sous forme de bande ou de ruban

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 442 (E-1131), 11. November 1991 & JP 03 187180 A (MATSUSHITA ELECTRIC IND CO LTD), 15. August 1991 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11505899B2 (en) 2018-12-05 2022-11-22 Nvent Services Gmbh Anti-icing surface with polymeric supports
WO2023222906A1 (fr) * 2022-05-19 2023-11-23 Finar Module Sagl Dispositif de résistance de puissance

Also Published As

Publication number Publication date
EP0866640A3 (fr) 1999-01-13

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