EP2346303A1 - Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation - Google Patents

Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation Download PDF

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Publication number
EP2346303A1
EP2346303A1 EP10150774A EP10150774A EP2346303A1 EP 2346303 A1 EP2346303 A1 EP 2346303A1 EP 10150774 A EP10150774 A EP 10150774A EP 10150774 A EP10150774 A EP 10150774A EP 2346303 A1 EP2346303 A1 EP 2346303A1
Authority
EP
European Patent Office
Prior art keywords
heater
foil
foil heater
frtp
film
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Withdrawn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
EP10150774A
Other languages
German (de)
French (fr)
Inventor
Johan Harder
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.)
Calesco Division/Backer BHV AB
Original Assignee
Calesco Division/Backer BHV AB
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 Calesco Division/Backer BHV AB filed Critical Calesco Division/Backer BHV AB
Priority to EP10150774A priority Critical patent/EP2346303A1/en
Publication of EP2346303A1 publication Critical patent/EP2346303A1/en
Withdrawn legal-status Critical Current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
    • H05B3/267—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 organic material, e.g. plastic
    • 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
    • H05B2203/033—Heater including particular mechanical reinforcing means

Definitions

  • Film heaters have been used as panel heaters for some time.
  • the basic problem with film heaters is that when the size increases so are the capacitive leakage currents. This is mainly restricting the size of foil heaters attached on an electrically conductive material such as Steel or Aluminium. On radiator panels this has been solved by using a foam adhesive as in FR2875369 or by creating an air gap between the heater and conductive material in different ways.
  • the above solutions all have the drawback that makes them difficult to use in mass production.
  • the innovation in this case will eliminated the need of foam adhesive when applying the film heaters towards the front panel and make the assembly of the heater simple and fool proof.
  • the innovation is based on foil heater made from etched circuit (7) such as Aluminium, Cu, Brass, Stainless steel or NiCr on a PET Film (6) carrier.
  • the foil heater is bonded with PP-based hot melt film (5) towards a continuous fibre reinforced thermoplastic, FRTP (4) material based on PP and glass fibre with a 0/90 configuration.
  • Two additional layers are needed when used in Class II products without protective grounding; with PP-based hot melt film (3) and PET film (2).
  • the single sided lamination on a 0/90 laminated will give the heater curved shape with an inherent radius of 0,3-2 m.
  • the curvature is used to provide a stress towards the metal front plate (1) when the heater is assembled in the front panel. In this way there is no need for any adhesive to keep the heater in place.
  • the springs have PET-layer (9) bonded with foam adhesive (10) to provide electrical insulation (Class II- heaters mainly) and abrasion resistance towards the circuit material.

Abstract

The invention relates to a foil heater made from etched circuit (7) on a PEL-film (5).
According to the invention the foil heater is bonded with PP-based hot melt film (5) towards a continuous fibre reinforced thermoplastic (4) material based on PP and glass with a 0/90 configuration. The heater has a curved shape with a radius in the range of 0,3-2 m.

Description

  • Film heaters have been used as panel heaters for some time. The basic problem with film heaters is that when the size increases so are the capacitive leakage currents. This is mainly restricting the size of foil heaters attached on an electrically conductive material such as Steel or Aluminium. On radiator panels this has been solved by using a foam adhesive as in FR2875369 or by creating an air gap between the heater and conductive material in different ways. The above solutions all have the drawback that makes them difficult to use in mass production.
  • The innovation in this case will eliminated the need of foam adhesive when applying the film heaters towards the front panel and make the assembly of the heater simple and fool proof.
  • The innovation is based on foil heater made from etched circuit (7) such as Aluminium, Cu, Brass, Stainless steel or NiCr on a PET Film (6) carrier. The foil heater is bonded with PP-based hot melt film (5) towards a continuous fibre reinforced thermoplastic, FRTP (4) material based on PP and glass fibre with a 0/90 configuration. Two additional layers are needed when used in Class II products without protective grounding; with PP-based hot melt film (3) and PET film (2). The single sided lamination on a 0/90 laminated will give the heater curved shape with an inherent radius of 0,3-2 m. The curvature is used to provide a stress towards the metal front plate (1) when the heater is assembled in the front panel. In this way there is no need for any adhesive to keep the heater in place.
  • To prevent the heater from snapping back, steel or aluminium springs (8) are used. The springs have PET-layer (9) bonded with foam adhesive (10) to provide electrical insulation (Class II- heaters mainly) and abrasion resistance towards the circuit material.
  • The concept has proven leakage currents of 0,4 mA/m2with 0,7 mm FRTP and will then be able to be used for radiant panels for class II up to 0,6 m2 and class I up to 1,8m2

Claims (5)

  1. A foil heater made from etched circuit (7) on a PET film (6), characterized in that the foil heater is bonded with PP-based hot melt film (5) towards a continuous fibre reinforced thermoplastic (4) material based on PP and glass fibre with a 0/90 configuration, and that the heater has a curved shape with a radius in the range of 0,3-2 m.
  2. A foil heater according to claim 1, characterized in that the heater includes two additional layers, namely a PP-based hot melt film (3) and a PET film (2).
  3. A foil heater according to claim 1 or 2, characterized in that the etched circuit is of a material selected from the group consisting of Aluminium, Cu, Brass, Stainless steel and NiCr.
  4. A heater device including a radiator panel with a metal front plate (1), characterized in that the heater device includes a foil heater according to any of claims 1-3, whereby the curved shape of the foil heater is stressed towards the metal front plate (1).
  5. A heater device according to claim 4, characterized in that it includes steel or aluminium springs, which springs (8) have PET-layer (9) bonded with foam adhesive.
EP10150774A 2010-01-14 2010-01-14 Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation Withdrawn EP2346303A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10150774A EP2346303A1 (en) 2010-01-14 2010-01-14 Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10150774A EP2346303A1 (en) 2010-01-14 2010-01-14 Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation

Publications (1)

Publication Number Publication Date
EP2346303A1 true EP2346303A1 (en) 2011-07-20

Family

ID=42235572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10150774A Withdrawn EP2346303A1 (en) 2010-01-14 2010-01-14 Radiator panel for domestic and industrial applications based on heater with single sided FRTP insulation

Country Status (1)

Country Link
EP (1) EP2346303A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919441A (en) * 1972-12-20 1975-11-11 Seinosuke Horiki Panel-styled calorific devices and a process for manufacturing the same
GB1481014A (en) * 1973-06-01 1977-07-27 Hoechst Ag Electrically conductive article and process for its manufacture
EP0172302A1 (en) * 1984-03-02 1986-02-26 Tokyo Cosmos Electric Co., Ltd. Planar resistance heating element
EP1009196A1 (en) * 1997-01-13 2000-06-14 Idemitsu Kosan Co., Ltd. Planar heating element
FR2875369A1 (en) 2004-09-15 2006-03-17 Thermor Ind Soc Par Actions Si Low temperature electric radiator unit for industrial or domestic use, includes electrically-insulating cellular foam material and adhesive in layered construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919441A (en) * 1972-12-20 1975-11-11 Seinosuke Horiki Panel-styled calorific devices and a process for manufacturing the same
GB1481014A (en) * 1973-06-01 1977-07-27 Hoechst Ag Electrically conductive article and process for its manufacture
EP0172302A1 (en) * 1984-03-02 1986-02-26 Tokyo Cosmos Electric Co., Ltd. Planar resistance heating element
EP1009196A1 (en) * 1997-01-13 2000-06-14 Idemitsu Kosan Co., Ltd. Planar heating element
FR2875369A1 (en) 2004-09-15 2006-03-17 Thermor Ind Soc Par Actions Si Low temperature electric radiator unit for industrial or domestic use, includes electrically-insulating cellular foam material and adhesive in layered construction
EP1638370A1 (en) * 2004-09-15 2006-03-22 Thermor Industrie Heating element forming device

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