EP0033788A1 - Elektrisches Heizgerät - Google Patents

Elektrisches Heizgerät Download PDF

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Publication number
EP0033788A1
EP0033788A1 EP80200803A EP80200803A EP0033788A1 EP 0033788 A1 EP0033788 A1 EP 0033788A1 EP 80200803 A EP80200803 A EP 80200803A EP 80200803 A EP80200803 A EP 80200803A EP 0033788 A1 EP0033788 A1 EP 0033788A1
Authority
EP
European Patent Office
Prior art keywords
support
propeller
flat
elastic deformation
slots
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Withdrawn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
EP80200803A
Other languages
English (en)
French (fr)
Inventor
André Dubois
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.)
Generale Belge Des Isolants (cogebi) Cie SA
Original Assignee
Generale Belge Des Isolants (cogebi) Cie SA
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 Generale Belge Des Isolants (cogebi) Cie SA filed Critical Generale Belge Des Isolants (cogebi) Cie SA
Publication of EP0033788A1 publication Critical patent/EP0033788A1/de
Withdrawn legal-status Critical Current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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base

Definitions

  • the object of the present invention is a heating appliance equipped with a particularly simple heating element and of economical manufacture. It is characterized in that the heating element is composed of at least one wire wound in a helix whose end loops and several intermediate loops are secured to the support, for example by stapling. Preferably, the heating element is composed of at least two helically wound wires fixed on either side of the support. In the latter case, it is possible to assemble back to back two cartons of mica, each supporting a helically wound wire. Ultimately, each turn of the propeller can be maintained by the support or an element secured to the latter.
  • a flat cardboard of mica serves as lateral support for a propeller 2 made of electric resistant wire with strongly spaced turns.
  • tongue 3 in a heat-resistant insulation in this case a tongue of mica cardboard, of small width compared to the diameter of the propeller is introduced into the latter and secured to the support 1 by rivets 4 passing between two neighboring turns.
  • the tongue 3 applies the propeller 2 laterally against the support.
  • This fixing allows the wire to expand, but prevents it from vibrating if the wire is supplied with alternating current.
  • rivets it is possible to use other heat-resistant fastening means, even glues.
  • each loop When the wire is relatively stiff, it is not necessary to secure each loop with the support 1, it then suffices to fix the end loops and several intermediate loops to the support, for example as the case may be, each 3rd or 5th loop .
  • This fixing can in particular be carried out by stapling the loops on the support 1 of mica cardboard.
  • the staples 11 are provided with a tightening loop 12 conforming to the shape of the wire 2 of the propeller, in order to ensure that the wire is firmly held against the vibration forces which stress when it is traversed by nominal alternating current.
  • the propeller 2 is threaded into pairs of holes 5.
  • the spacing between two holes of a pair is substantially smaller than the diameter of the propeller. If the threading of the propeller wire in the holes imposes on it a different curvature than that which it presents not threaded, it is possible to pinch each turn firmly so as to once again ensure a solid fixing of the turns allowing their expansion and preventing vibration which in particular in the case of AC power supply could constitute a source of noise.
  • the curvature of the propeller wire 2 in the execution according to FIG. 3 is determined by the thickness of the support 1 and the diameter of the holes 5.
  • the particular advantage of the solution according to FIG. 1 is that it makes it possible to obtain rigid elements not only with respect to bending forces in the plane of the support 1 but also with respect to such forces perpendicular to the plane of the support. 1.
  • the solution of figs.2 and 3 allows the manufacture of elements which can be bent around an axis, not shown, preferably on the opposite side of the support 1 relative to that where most of the the propeller 2.
  • the propeller 2 can be held there by pinching or by means of a rod 8 threaded between the support 1 and the inner faces of the parts of the turns of the propeller 2 passing through the slots 6.
  • a rod 8 threaded between the support 1 and the inner faces of the parts of the turns of the propeller 2 passing through the slots 6.
  • Another possibility of causing the deformation of the turns necessary for the firm maintenance of the propeller 2 on the support 1 is to thread into the propeller 2 placed in slots 9 on the support 1 a rectangular flat insulating piece 10 of greater width the diameter of the propeller 2.
  • the elastic deformation of the turns is chosen low enough so that at service temperature it does not turn into irreversible plastic deformation and strong enough so that at service temperature it has not disappeared because dilation of the propeller thread.

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  • Paper (AREA)
  • Resistance Heating (AREA)
EP80200803A 1980-01-10 1980-08-27 Elektrisches Heizgerät Withdrawn EP0033788A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82075A LU82075A1 (fr) 1980-01-10 1980-01-10 Element de chauffage electrique
LU82075 1980-01-10

Publications (1)

Publication Number Publication Date
EP0033788A1 true EP0033788A1 (de) 1981-08-19

Family

ID=19729326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200803A Withdrawn EP0033788A1 (de) 1980-01-10 1980-08-27 Elektrisches Heizgerät

Country Status (2)

Country Link
EP (1) EP0033788A1 (de)
LU (1) LU82075A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532808A1 (fr) * 1982-09-08 1984-03-09 Brasier Peter Element chauffant electrique
US4789773A (en) * 1985-07-31 1988-12-06 E.G.O. Elektro-Gerate Blanc U. Fischer Electrical radiant heater for heating heating surfaces
GB2335833A (en) * 1998-03-25 1999-09-29 Redring Electric Ltd Support for coiled wire heating element
US6781099B2 (en) * 2001-03-12 2004-08-24 Karl-Heinz Krah Gmbh Electrofusion socket forming system
WO2004086819A3 (en) * 2003-03-21 2004-12-23 Tutco Inc Mica board electrical resistance wire heater , subassemblies components, and methods of assembly
CN100408958C (zh) * 2003-12-25 2008-08-06 坂口电热株式会社 电炉

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650512A (en) * 1948-07-24 1951-02-28 Simplex Electric Co Ltd Improvements in electrical heating apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650512A (en) * 1948-07-24 1951-02-28 Simplex Electric Co Ltd Improvements in electrical heating apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532808A1 (fr) * 1982-09-08 1984-03-09 Brasier Peter Element chauffant electrique
US4789773A (en) * 1985-07-31 1988-12-06 E.G.O. Elektro-Gerate Blanc U. Fischer Electrical radiant heater for heating heating surfaces
GB2335833A (en) * 1998-03-25 1999-09-29 Redring Electric Ltd Support for coiled wire heating element
US6781099B2 (en) * 2001-03-12 2004-08-24 Karl-Heinz Krah Gmbh Electrofusion socket forming system
US7144045B2 (en) 2001-03-12 2006-12-05 Karl-Heinz Krah Gmbh Electrofusion socket forming system
US7767938B2 (en) 2001-03-12 2010-08-03 Karl-Heinz Krah Gmbh Electrofusion socket forming system
WO2004086819A3 (en) * 2003-03-21 2004-12-23 Tutco Inc Mica board electrical resistance wire heater , subassemblies components, and methods of assembly
CN100408958C (zh) * 2003-12-25 2008-08-06 坂口电热株式会社 电炉

Also Published As

Publication number Publication date
LU82075A1 (fr) 1980-04-23

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR

RBV Designated contracting states (corrected)

Designated state(s): BE DE FR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820604

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DUBOIS, ANDRE