EP0381976B1 - Elément chauffant - Google Patents

Elément chauffant Download PDF

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Publication number
EP0381976B1
EP0381976B1 EP90101163A EP90101163A EP0381976B1 EP 0381976 B1 EP0381976 B1 EP 0381976B1 EP 90101163 A EP90101163 A EP 90101163A EP 90101163 A EP90101163 A EP 90101163A EP 0381976 B1 EP0381976 B1 EP 0381976B1
Authority
EP
European Patent Office
Prior art keywords
heating coil
heating
carrier member
heating element
connecting elements
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.)
Expired - Lifetime
Application number
EP90101163A
Other languages
German (de)
English (en)
Other versions
EP0381976A3 (fr
EP0381976A2 (fr
Inventor
Bernhard Wolf
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.)
FIRMA FRIEDRICH WUERTH
Original Assignee
Friedrich Wuerth Firma
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 Friedrich Wuerth Firma filed Critical Friedrich Wuerth Firma
Publication of EP0381976A2 publication Critical patent/EP0381976A2/fr
Publication of EP0381976A3 publication Critical patent/EP0381976A3/fr
Application granted granted Critical
Publication of EP0381976B1 publication Critical patent/EP0381976B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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 invention relates to a heating element, in particular for toaster, with a carrier body, with connecting elements which are supported on the carrier body and with a heating coil which can be connected at the end to the supply elements with power supply wires and which is welded to the connecting elements and is held on the carrier body via these.
  • the invention further relates to a method for producing a heating element of the aforementioned type.
  • the heating coil is first wound on a winding machine, then one or more turns of the heating coil are bent open at the end, that is to say end spiral, and connected to the power connection wire by means of a crimp connection.
  • the heating coil is fixed to the carrier body, which can be, for example, a ceramic tube onto which the heating coil is pushed on the outside, or a quartz tube into which the heating coil is drawn in on the inside, in that either the bent part of the heating coil bent and hung in a wall of the carrier body or a connector, usually in the form of a rivet, is attached via a crimp connection.
  • the carrier body can be, for example, a ceramic tube onto which the heating coil is pushed on the outside, or a quartz tube into which the heating coil is drawn in on the inside, in that either the bent part of the heating coil bent and hung in a wall of the carrier body or a connector, usually in the form of a rivet, is attached via a crimp connection.
  • a heating element with a carrier body and with connection elements supported on the carrier body is known.
  • the heating coil is connected to the connection elements via spot welding.
  • the heating coil does not end at both ends with a last spiral turn, but the last piece of the heating coil is bent in a final spiral and welded to the connecting element.
  • a heating coil is also disclosed which is end-spiraled and bent at the end in order to make electrical contact with the connection elements.
  • the invention is based on the object of improving a heating element of the type described at the outset and a method for producing such such that good electrical contact with the heating coil is ensured and that the heating element can be produced as simply as possible is.
  • This object is achieved according to the invention in a heating element of the type described in the introduction in that the heating coil ends at both ends with a last spiral turn and in that the heating coil is welded to the respective connection element with at least one end turn.
  • connection elements directly with at least one end-lying turn
  • a permanent and reliable electrical contact between the connection elements and the heating coil is produced, and also in that the heating coil at both ends with a last spiral turn ends, the production of a connection between the connection elements and the heating coil does not require the heating coil to be bent, so that this complex operation is saved, because after the heating coil has been wound there is only a cut off after the last winding in each case and thus there are at the heating coil not to carry out any further operations.
  • This is also of great advantage since there is otherwise the risk that the heating coil warps unevenly.
  • a ceramic tube is preferably used in the heating elements according to the invention, on the outer circumferential side of which the heating coil is then arranged, or a quartz tube, on the inside of which, ie on the inner circumferential side, the heating coil is arranged.
  • Holding the heating coil on the carrier body with the end elements is particularly advantageous when the heating coil is held tensioned on the carrier body in the direction of its longitudinal axis.
  • the tensioned holding of the heating coil can be easily realized by the connection elements supported on the carrier body.
  • connection elements In order to make it easy to support the connection elements on the support body, it is provided that the connection elements have extensions which are supported on the support body.
  • connection elements over the extensions is achieved in a particularly simple manner in that the extensions protrude over a peripheral surface of the heating coil facing the carrier body in the direction of the carrier body and in particular extend in the direction transverse to a longitudinal axis of the heating coil.
  • an alternative provides that the extensions protrude outward beyond the heating coil and a second alternative that the extensions extend inwards towards the longitudinal axis
  • the heating coil ends at both ends with a last turn, that is to say if, after winding the heating coil, only cutting off after each last turn and therefore no further operations, in particular no bending of the last turn have to take place on the heating coil itself. This is also of great advantage, since otherwise there is always the risk that the heating coil warps unevenly.
  • the invention is based on the fact that the heating coil is welded to the connection elements with at least one end turn. It is particularly expedient here if the connection elements are welded to the last turn, preferably even the connection elements are welded to the last two to five turns of the heating coil or even better the last two to three turns of the heating coil.
  • connection elements are provided with a welding lug.
  • this welding lug is designed such that it is essentially adapted to the curvature of the turns of the heating coil.
  • the welding lug rests on the circumferential side of the turns of the heating coil opposite the carrier body, so that when the heating coil is mounted on the carrier body it is not hindered by the welding lug.
  • the connecting elements do not extend beyond the circumferential side of the heating coil facing the carrier body. This makes it possible to weld the connection elements on the support body before attaching the heating coil, the extensions being in the assembly position, that is to say also not extending beyond the circumferential side of the heating coil facing the support body, and at least in the case of a connection element only after the attachment of the To bend the heating coil on the carrier body the extensions into a holding position in which they extend beyond the peripheral side of the heating coil facing the carrier body.
  • the current supply wires can be held on the connection elements via crimp connections.
  • the connection elements are welded to the current supply leads.
  • the connection elements are advantageously designed such that they have a connection lug for the current supply wires.
  • the design of the carrier body has not been specified in detail. In the context of the present invention, however, it has proven particularly expedient if the carrier body is long and stretched, in particular if the carrier body is a tube.
  • the extensions are supported on the end side of the carrier body, that is to say they preferably rest on the end faces thereof.
  • connection element is made of scale-free material, the material preferably being more heat-resistant than the heating coil.
  • heating coils those with a superficial oxidation layer are to be used, which, because of their superficial oxidation layer, have the advantage that short circuits between individual turns can be avoided during operation.
  • connection element has proven to be particularly favorable.
  • a method for producing a heating element in particular a heating element according to the above-mentioned exemplary embodiments, comprising a heating coil, a support body and connecting elements welded to the heating coil on both sides, by means of which the heating coil is connected to current supply wires, that the heating coil is cut off at both ends after the last turn, so that it ends with the last turn and then with at least one end turn with the respective one Connection element is welded and that the heating coil is then drawn onto the support body and fixed with the connection elements.
  • the connecting elements are bent from a mounting position in which they do not protrude over a circumferential side of the heating coil facing the carrier body into a holding position in which they are at least partially over the circumferential side facing the carrier body Survive the heating coil.
  • connection elements are bent from the mounting position into the holding position.
  • both power supply wires are connected to the connection elements.
  • the current guide wires are also welded to the connection elements.
  • the mounting of the heating coils on the support body causes problems, preferably when the heating coils are not to be bent up on one side, it is within the scope of the present invention, it is particularly advantageous if the power supply wires are used as an aid when pulling the heating coil onto the carrier.
  • the heating coil is pulled onto the carrier by pulling on a power supply wire.
  • the simplest method for pulling the heating coil onto the carrier body provides that the extensions of the first connection element are bent into their holding position before the heating coil is pulled up, so that they can come into contact with the carrier body when they are pulled up. As the next step, the extensions of the second connection element are then bent over after being pulled into their holding position.
  • a preferred embodiment of the heating element according to the invention provides that the heating coil is oxidized before being pulled onto the carrier body.
  • heating coil is welded to the connection elements before oxidation.
  • a first embodiment of a heating element designated as a whole by 10 in FIG. 1, comprises an elongated ceramic tube 12 as the carrier body, which carries on an outer lateral surface 14 a heating coil 16 drawn onto the ceramic tube 12, which extends over the entire ceramic tube 12 from a first end 18 to extends to a second end 20 with its individual turns 22.
  • the end-side three to four turns 22 preferably lie in the area of the first end 18 and the end-side three to four turns 22 in the area of the second end 20, while the turns 22 are spaced apart from one another.
  • the heating coil 16 thus ends both in the area of the first end 18 and in the area of the second end 20 with the last turn 22 in each case.
  • the connecting element 26 then includes two projections 32, which in their holding position - shown in dashed lines in FIG. 3 - run in the radial direction to a longitudinal axis 34 of the ceramic tube 12 and the heating coil 16 on the longitudinal axis 34 and in their mounting position - drawn as a solid line in FIG. 3 - do not protrude inward beyond the outside 28 of the end turns 22 in the direction of the longitudinal axis 34, but are, for example, adapted to the curvature of the outside 28 or extend tangentially to it in a straight direction.
  • the projections 32 bent in the holding position each rest on an end face 35 of the first end 18 or the second end 20 of the ceramic tube 12 and thus hold the heating coil 16 drawn onto the ceramic tube 12 in tension in the direction of the longitudinal axis 34 on the ceramic tube 12 clamped position.
  • Each connecting element 26 further comprises on its side opposite the welding lug 24 a connecting lug 36 which, in the fully assembled state of the heating element 10, extends in the direction of the longitudinal axis 34 from the ends 18, 20 of the ceramic tube 12.
  • This terminal lug 36 is preferably provided with a power supply wire 38.
  • the power supply wire 38 then leads to the electrical connections for the heating element 1.
  • the power supply wire 38 is preferably arranged on the connection lug 36 on a side opposite the heating coil 16 and welded to it.
  • the connecting element 26 is made from scale-free material, in particular from a chromium-nickel compound.
  • the heating element 10 according to the first exemplary embodiment is now installed in such a way that after the heating coil 16 has been wound, it is cut to the desired length.
  • the end windings 22 are then welded to the respective welding lugs 24 of the connection elements 26, the extensions 32 still being aligned in the assembly position, as shown in FIG. 3.
  • the current supply wires 38 are then welded to the respective connecting lugs 36 of the connecting elements 26.
  • the extensions 32 are bent over from one of the connecting elements 26 into the holding position.
  • the ceramic tube 12 is now inserted from the side into the heating coil, on which the connecting element 26 is welded, the extensions 32 of which are still in the assembly position. Consequently The ceramic tube 12 can be pushed through until, for example, the end face 35 of the second end 20 bears against the extensions 32 of the one connecting element 26 which are in the holding position.
  • the current supply wire 38 of the connecting element 26 can now be pulled, the extensions 32 of which are still in the installed position.
  • the heating coil 16 can be held in place via the current supply wire 38 of the connecting element 26, the extensions of which are already in the holding position. This allows the heating coil 16 to be pulled so far that the extensions 32 in the mounting position come to lie in the direction of the longitudinal axis 34 in front of the end face 35, so that these extensions 32 can be bent into the holding position.
  • the heating coil 16 can pull the two connection elements 26 so far that their extensions 32, which are in the holding position, rest on the end faces 35 in the region of the first end 18 and the second end 20 on the ceramic tube 12 and consequently the heating coil 16 is fixed on this.
  • the fully assembled heating element 10 can be installed in this form in a corresponding device, for example a toaster.
  • FIGS. 5 to 7 the same parts, insofar as they are provided with the same reference numerals, are only provided with an additional line. Regarding their description can therefore be referred to the first embodiment.
  • the carrier body is not designed as a ceramic tube 12, but rather as a quartz tube 40, in which the heating coil 16' is arranged on the inside.
  • the respective end windings 22 'of the heating coil 16' are also welded with welding tabs 24 'of the connecting elements 26' in the fully assembled state of the heating element 10 ', in this embodiment the welding tabs 24' being arranged inside the heating coil 16 'and thereby in their Curvature, as can be seen for example from FIG. 6, are adapted to the curvature of an inner side 42 of the heating coil 16 '.
  • the extensions 32 ' which are likewise encompassed by the connecting elements 26', are bent in their assembly position, as drawn in FIG. 6, in such a way that they lie as far as possible within the heating coil 16 ', but at least do not project beyond an outside 28' of the heating coil 16 ' .
  • the extensions 32 ' in the holding position the extensions 32 'are not bent radially inwards to the longitudinal axis 34', but point outwards in the radial direction with respect to the longitudinal axis 34 ', whereby they protrude outward in the radial direction to such an extent that they protrude can be supported on an end face 44 of the quartz tube 40.
  • the heating coil 16 ' is in the fully assembled state due to its internal stress in the direction of the longitudinal axis 34 through the on the end faces 44 at a first end 46 and at a second end 48 of the quartz tube 40, and in the holding position, extensions 32 ′ are completely fixed in the quartz tube 40.
  • the power supply wires 38 'in the second embodiment are also welded to the connecting lugs 36' on the side opposite the windings 22 'of the heating coil 16', that is to say that the power supply wires 38 'in the second embodiment on the side of the longitudinal axis 34' of the Connection lugs 36 'rest.
  • the procedure is now that the heating coil 16' is first wound, the last winding in each case being simply cut off in the region of the two ends of the heating coil 16 '.
  • the last turns 22 'at the ends are then welded to the welding lug 24' of the respective connecting element 26 ', so that at both ends of the heating coil 16' there is a connecting element 26 'with each of the heating coil 16' projecting terminal lug 36 'is welded.
  • the next step is to weld the power supply wires 38 'to the connecting lugs 36' and then to bend the extensions 32 'into the holding position in one of the holding elements 26' while the other connecting element 26 'still has extensions 32' bent into the assembly position.
  • connection element 26' The power supply wire 38 'welded to the latter connection element 26' is now inserted into and pushed through the quartz tube 40, this power supply wire 38 'serving as a tension element around the connection element 26' with the extensions 32 'bent in the assembly position through the quartz tube 40 so Pull far through until the connecting element 26 'with its extensions 32' in the holding position rests on the end face 44, for example of the second end 48, on the quartz tube 40 and the extensions 32 'of the other connecting element 26' still in the mounting position in the direction of the longitudinal axis 34 'are pulled out of the quartz tube 40 so far that they stand in front of the first end 46 and can be bent into the holding position.
  • the heating coil 16' is fixed in the quartz tube 40 in that the extensions 32 'in each case due to the internal stress of the heating coil 16' in the direction of the longitudinal axis 34 'against the end faces 44 of the quartz tube 40 on first end 46 and at the second end 48 are created.

Landscapes

  • Resistance Heating (AREA)
  • General Induction Heating (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Electric Stoves And Ranges (AREA)

Claims (27)

  1. Elément chauffant, en particulier pour toasteur, comportant un corps porteur (12, 40), des éléments de raccordement (26), qui s'appuient sur le corps porteur (12, 40), et un boudin chauffant (16) qui peut être relié du côté des extrémités par les éléments de raccordement (26) à des cordons d'alimentation en courant et qui est soudé aux éléments de raccordement (26) et est maintenu par ceux-ci sur le corps porteur (12, 40), caractérisé en ce que le boudin chauffant (16) se termine aux deux extrémités par un dernier enroulement en spirale (22) et en ce que le boudin chauffant (16) est soudé par au moins un enroulement (22), situé du côté des extrémités, à l'élément de raccordement respectif (26).
  2. Elément chauffant suivant la revendication 1, caractérisé en ce que le boudin chauffant (16) est maintenu tendu dans la direction de son axe longitudinal (34) sur le corps porteur (12, 40).
  3. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que les éléments de raccordement (26) présentent des saillies (32) qui s'appuient sur le corps porteur (12, 40).
  4. Elément chauffant suivant la revendication 3, caractérisé en ce que les saillies (32) débordent dans la direction du corps porteur (12, 40), au-delà d'une face périphérique (28, 42) du boudin chauffant (16) tournée vers le corps porteur (12, 40).
  5. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que les éléments de raccordement (26) sont soudés au dernier enroulement en spirale (22).
  6. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que les éléments de raccordement (26) sont pourvus d'une cosse de soudage (24).
  7. Elément chauffant suivant la revendication 6, caractérisé en ce que la cosse de soudage (24) est adaptée sensiblement à une courbure des enroulements (22).
  8. Elément chauffant suivant la revendication 6 ou 7, caractérisé en ce que la cosse de soudage (24) est appliquée sur un côté périphérique (28, 42), des enroulements (22) du boudin chauffant (16), situé à l'opposé du corps porteur (12, 40).
  9. Elément chauffant suivant l'une des revendications 3 à 8, caractérisé en ce que les éléments de raccordement (26), à l'exception des saillies (32), ne s'étendent pas au-delà du côté périphérique (28, 42), du boudin chauffant (16), qui est tourné vers le corps porteur (12, 40).
  10. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que les éléments de raccordement (26) sont soudés aux cordons d'alimentation en courant (38).
  11. Elément chauffant suivant la revendication 10, caractérisé en ce que les éléments de raccordement (26) présentent une cosse de raccordement (36) pour les cordons d'alimentation en courant (38).
  12. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que le corps porteur (12, 40) est étendu en longueur.
  13. Elément chauffant suivant la revendication 12, caractérisé en ce que le corps porteur (12, 40) est un tube.
  14. Elément chauffant suivant l'une des revendications 12 et 13, caractérisé en ce que les saillies (32) s'appuient du côté des extrémités sur le corps porteur (12, 40).
  15. Elément chauffant suivant l'une des revendications précédentes, caractérisé en ce que l'élément de raccordement (26) est constitué d'une matière inoxydable.
  16. Elément chauffant suivant la revendication 15, caractérisé en ce que l'élément de raccordement (26) est constitué par un alliage au chrome et au nickel.
  17. Procédé de fabrication d'un élément chauffant comportant un boudin chauffant (16), un corps porteur (12, 40) et des éléments de raccordement (26) qui sont soudés de part et d'autre au boudin chauffant et par lesquels le boudin chauffant (16) peut être relié à des cordons d'alimentation en courant, caractérisé en ce que le boudin chauffant (16) est sectionné aux deux extrémités après le dernier enroulement (22) respectif de sorte qu'il se termine par le dernier enroulement (22), et qu'il soit en conséquence soudé à l'élément de raccordement respectif (26) par au moins un enroulement (22) situé du côté des extrémités, et en ce que le boudin chauffant (16) est tiré ensuite sur le corps porteur (12, 40) et est fixé par les éléments de raccordement (26).
  18. Procédé suivant la revendication 17, caractérisé en ce que pour la fixation du boudin chauffant sur le corps porteur, les éléments de raccordement sont pliés, à partir d'une position de montage dans laquelle ils ne débordent pas au-delà d'un côté périphérique, du boudin chauffant, tourné vers le corps porteur, dans une position de blocage dans laquelle ils débordent au moins partiellement au-delà du côté périphérique, du boudin chauffant, tourné vers le corps porteur.
  19. Procédé suivant la revendication 18, caractérisé en ce que des saillies des éléments de raccordement sont pliés de la position de montage dans la position de blocage.
  20. Procédé suivant l'une des revendications 17 à 19, caractérisé en ce qu'avant le tirage le boudin chauffant sur le corps porteur, les deux cordons d'alimentation en courant sont reliés aux éléments de raccordement.
  21. Procédé suivant la revendication 20, caractérisé en ce que les cordons d'alimentation en courant sont soudés aux éléments de raccordement.
  22. Procédé suivant l'une des revendications 17 à 21, caractérisé en ce que les cordons d'alimentation en courant sont utilisés comme moyen auxiliaire lors du tirage du boudin chauffant sur le corps porteur.
  23. Procédé suivant la revendication 22, caractérisé en ce que le boudin chauffant est tiré sur le corps porteur par tirage sur un cordon d'alimentation en courant.
  24. Procédé suivant l'une des revendications 19 à 23, caractérisé en ce que les saillies du premier éléments de raccordement sont pliées dans leur position de blocage avant le tirage du boudin chauffant.
  25. Procédé suivant la revendication 24, caractérisé en ce que les saillies du second élément de raccordement sont pliées dans leur position de blocage après le tirage.
  26. Procédé suivant l'une des revendications 17 à 25, caractérisé en ce que le boudin chauffant est oxydé avant le tirage sur le corps porteur.
  27. Procédé suivant la revendication 26, caractérisé en ce que le boudin chauffant est soudé aux éléments de raccordement avant l'oxydation.
EP90101163A 1989-02-10 1990-01-20 Elément chauffant Expired - Lifetime EP0381976B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3903961A DE3903961A1 (de) 1989-02-10 1989-02-10 Heizelement
DE3903961 1989-02-10

Publications (3)

Publication Number Publication Date
EP0381976A2 EP0381976A2 (fr) 1990-08-16
EP0381976A3 EP0381976A3 (fr) 1991-11-21
EP0381976B1 true EP0381976B1 (fr) 1993-06-02

Family

ID=6373787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101163A Expired - Lifetime EP0381976B1 (fr) 1989-02-10 1990-01-20 Elément chauffant

Country Status (5)

Country Link
EP (1) EP0381976B1 (fr)
AT (1) ATE90172T1 (fr)
DE (3) DE3903961A1 (fr)
DK (1) DK0381976T3 (fr)
ES (1) ES2042081T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826671A (zh) * 2018-04-09 2018-11-16 浙江普莱得电器有限公司 一种热风枪用发热芯及热风枪

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642573B1 (fr) * 1989-01-27 1993-09-17 Seb Sa Connecteur electrique pour element chauffant
DE3925664A1 (de) * 1989-08-03 1991-02-07 Friedrich Wuerth Fa Heizelement
DE4123266A1 (de) * 1991-07-13 1993-01-21 Braun Ag Brotroester-isolierrohrheizung
FR2706111B1 (fr) * 1993-06-03 1995-07-13 Seb Sa Dispositif chauffant pour table vitrocéramique.
FR2706110B1 (fr) * 1993-06-03 1995-07-13 Seb Sa Procédé et circuit de régulation d'éléments chauffants.
DE10161535A1 (de) * 2001-12-10 2003-06-26 Brigitte Wolf Heizelement und Verfahren zur Herstellung eines Heizelements
FR2840760B1 (fr) * 2002-06-05 2004-10-22 Seb Sa Element chauffant simplifie pour grille-pain

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GB759946A (en) * 1954-03-09 1956-10-24 Emi Ltd Improvements in or relating to electric resistance heating elements
US3253243A (en) * 1961-08-07 1966-05-24 Insto Gas Corp Heater tube assembly
US3217279A (en) * 1962-02-19 1965-11-09 Wiegand Co Edwin L Electric resistance heater
US3384852A (en) * 1966-02-16 1968-05-21 Btu Eng Corp High temperature electrical furnace
DE7634006U1 (de) * 1976-10-28 1978-04-20 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Flachheizkoerper fuer einen elektrischen brotroester oder einen toaster
FR2642573B1 (fr) * 1989-01-27 1993-09-17 Seb Sa Connecteur electrique pour element chauffant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108826671A (zh) * 2018-04-09 2018-11-16 浙江普莱得电器有限公司 一种热风枪用发热芯及热风枪

Also Published As

Publication number Publication date
EP0381976A3 (fr) 1991-11-21
DE3903961A1 (de) 1990-08-16
ES2042081T3 (es) 1993-12-01
ATE90172T1 (de) 1993-06-15
EP0381976A2 (fr) 1990-08-16
DK0381976T3 (da) 1993-10-04
DE59001578D1 (de) 1993-07-08
DE9007326U1 (de) 1991-06-27

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