EP0743804B1 - Elément chauffant - Google Patents

Elément chauffant Download PDF

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Publication number
EP0743804B1
EP0743804B1 EP96107634A EP96107634A EP0743804B1 EP 0743804 B1 EP0743804 B1 EP 0743804B1 EP 96107634 A EP96107634 A EP 96107634A EP 96107634 A EP96107634 A EP 96107634A EP 0743804 B1 EP0743804 B1 EP 0743804B1
Authority
EP
European Patent Office
Prior art keywords
conductor
heating
heater
set forth
section
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
EP96107634A
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German (de)
English (en)
Other versions
EP0743804A2 (fr
EP0743804A3 (fr
Inventor
Eugen Wilde
Hans Mohr
Martin Gross
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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.)
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Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP0743804A2 publication Critical patent/EP0743804A2/fr
Publication of EP0743804A3 publication Critical patent/EP0743804A3/xx
Application granted granted Critical
Publication of EP0743804B1 publication Critical patent/EP0743804B1/fr
Anticipated expiration legal-status Critical
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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
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater

Definitions

  • the invention relates to a heater according to the preamble of the claim 1.
  • the heater can within a very free range supporting body made of insulating material and / or metal a single or have several heating fields or be a radiant heater. These heating fields can be transverse to a central axis of the base body lie side by side and / or one inside the other, so that an external heating field surrounds an inner ring partially or closed.
  • the respective Heating fields are assigned to heating means, such as a heating resistor or heating conductor, which, in operation, face the front or top of the heater thermal radiation, usually through a radiation-permeable or translucent cover through, against the back of which the base body with one or more front faces under compressive stress is created.
  • the respective heating conductor can function as a strand and opposite the cover without contact or at a distance from a front of the base body at least partially exposed so be that it determines a predetermined, visible glow pattern during operation. With its ends and / or the distance between them is a Continuous area of the Resistor each connected to a connection conductor, upper which from the outside of the base body or one on this attached connector body forth the resistor electrically connected is. Like the resistor, this conductor is not pre-assembled Provide sheathing or bare metal exposed on the same Front arranged like the resistor.
  • the connecting wire can over its entire length within one or more heating fields are adjacent to the resistor and at least over part this length like the resistance will be visible.
  • the connecting wire can be from the neighboring one Resistance in operation due to radiation from heating and therefore be subjected to changing longitudinal strains, which lead to deformations to lead. If the conductor is a straight wire, which is between its Ends curved only according to the path of the connection is, this wire bulges in the event of longitudinal expansion. The head deformed himself the more the stronger he is through an increased own resistance value brings heating power directly during operation.
  • the invention has for its object to provide a heater what disadvantages of known training or the type described are avoided and the simple and visually in operation or out Operation of non-disruptive arrangement of the respective connection conductor high functional reliability or quality assurance processing in the manufacturing process guaranteed. In particular, high operational reliability or a long service life can be achieved.
  • Means are provided through which strain deformations of the connection conductor reduced or avoided transverse to its main longitudinal direction through which the mechanical load on the connection points this conductor is reduced or avoided so that the connection points stable in position despite different thermal loads stay.
  • Means can also be provided for the number of connection points or connecting leads, e.g. so that at three Heating fields less than six connection points or connection conductors and with two heating fields or heating circuits fewer than five connection points or connecting conductors are required. Essentially all of these means can be used to compensate or avoid thermal expansion the connecting conductor or its effects.
  • the conductor consists of a strand material, which is in its longitudinal direction be provided with a profiled profile throughout may be that it has a cross-sectional extension relative to it occupies greater bandwidth within which the strand runs back and forth transversely to the main longitudinal direction and which over the Length can be constant.
  • the profiling can be directed in two levels helical or only in one plane parallel to the front or Like. be wavy.
  • the connecting conductor advantageously has a length unit of the strand material and / or the conductor during operation is less electrical resistance, a lower temperature and / or a lower glow brightness than any heating resistor. This can be done by one in one or two of the above-mentioned, mutually perpendicular planes larger material cross-section, a material with a lower specific Resistance and / or a stretched compared to the heating resistor Profiling or greater division of the profiling achieved become.
  • the length of a solid corrugation is the connecting conductor larger than that of a heating resistor, so that each other Opposing surfaces of the connecting conductor transverse to the main longitudinal direction less for mutual heating when the Tilt the conductor during operation.
  • the connecting conductor can be between the connection points anchored several times directly in relation to the base body or be fixed in its longitudinal direction.
  • One between two Anchoring points lying conductor section from several, in particular a maximum of five or ten profile units thus transmits its Stretches do not, or only insignificantly, on the two anchoring ends subsequent sections or on the at a distance from these ends connecting points.
  • the strand material can constant over the length of the conductor lying between the connection points or changing cross-sections, e.g. at the anchor points Have cross-sectional enlargements or projections, which for Engage anchoring in the base bodies.
  • the connecting conductor can be like the heating conductor and together with it Mount on the main body from the front, e.g. only by plugging into an electrically or thermally acting insulating body made of inherently stable compressed fibrous and / or granular insulating material.
  • At least one heating field or heating circuit can be on its inner or outer periphery of a surface perpendicular to the front be limited to the basic body, which is closed over the circumference or is provided with at least one opening.
  • This area can be formed by a long side of a web-shaped projection be, the other long side shields the adjacent heating field.
  • a connection conductor expediently crosses this shielding, the Enforce shield or from the shield on the front can be covered. Nevertheless here is through the training described in the area of enforcement no thermal overload of the To fear the leader.
  • the conductor can be tight in the shield or the like. be embedded and / or a groove-shaped recess of the shield Push through without contact. Possibly.
  • the shield can also by plugging or putting on the front of the conductor or mount a corresponding profile strand, the profile strand enter the recess or the material of the shield can penetrate and thereby a depression corresponding to its shape or groove in the shield.
  • the shield can also be secured in position.
  • Two connection points are then expediently immediately adjacent to the inside of the shield, which is only placed on the front of the body can be.
  • the training courses according to the invention can be used for education the respective connection point can have two to four flat material parts connected to each other at the same level or level and be welded by spot welding.
  • One or two connection ends one or two conductors can be on one or both sides the flat sides of thicker flat parts are created and connected to them without play his.
  • the two flat parts can by a one-piece, V or.
  • U-shaped clip or its leg can be formed.
  • One of these In turn, leg can be made in one piece with one of the conductors or with one Be formed part, which the main body of which Interspersed from the outside to the inside.
  • the heater 1 forms with the components, means and arrangements shown a pre-assembled unit for arrangement on the back of a Glass ceramic plate, the unit or the glass ceramic plate several same or different heaters e.g. according to FIGS. 1, 6 and 7 can contain side by side.
  • the heater 1 has a base body 2 with two thermally and electrically insulating insulating bodies 3, 4 and a supporting body 5 made of sheet metal or the like supporting this.
  • the insulating body 3 forms a base plate and two concentrically at a distance interlocking, circular boundaries, shields or edges 6, 7, each one piece with or separately can be formed by the base plate.
  • the respective insulating component expediently consists of a pourable one Raw material pressed in a mold, e.g. from a dry and, if necessary, pyrogenic silica pressed with a binder Airgel, from dry pressed vermiculite and / or from a fibrous, mainly ceramic fiber-like slurried material, which is wet pressed into shape and then dried.
  • the bottom plate consists preferably essentially only of the dry pressed Granules from the smallest beads and / or spatulate particles, which can be reinforced by adding the fibers mentioned.
  • the Edge suitably consists essentially of the vacuum-formed or fibrous material.
  • the bottom plate can be continuous at the front be flat or over a partial height of the edge 6 or 7 one projecting edge approach, on which the remaining, fibrous Edge part is placed closed, especially according to arrangement the ladder on the bottom plate.
  • On the outer circumference of the base plate and the outer edge 6 has an edge 8 to support it of the support body 5, which is the outermost and exposed circumference of the base body 2 forms.
  • This edge 8 connects in one piece to a base plate which supports the insulating base on its outside.
  • A can be between the bottom of the support body 5 and the insulating bottom separate, plate-shaped insulating body 4 may be arranged, however the bottom plate of the insulating body 3 is preferably in one piece up to Carrying floor through, so that only a single insulating floor is required.
  • the corresponding End face of the edge 6 or 7 is above the bottom surface 9 before and is used for the pressed as well as almost tight and resilient Contact the translucent cover plate, opposite which the edge 8 and possibly also the edge 7 can be set back slightly.
  • the edge 7 delimits a first, central heating field 12 in its interior and between the two edges 6, 7 is a second, annular one Heating field 13 limited. Both heating fields 12, 13 are immediately adjacent the associated peripheral surfaces of the edges 6, 7.
  • the inside width the field 13 is larger than its radial extent and the inner width of the annular field 12 is smaller than its radial extent, so that the bottom 6 around the axis 10 is a small, unheated center 14 forms.
  • a first strand-shaped resistor 15 is approximately evenly distributed and in field 13 a corresponding second resistor 16.
  • the resistor can be used for an even distribution 15 or 16 concentrically annular, spiral-shaped around the axis 10 and / or reciprocally parallel or rectilinear sections form, in which the resistance strand material again in itself Longitudinally profiled, namely sinusoidal, trapezoidal or similar is bent to stay wavy or uniform.
  • 2a has the curl semi-elliptical flat arches and directly tangent to them subsequent and continuously flat legs.
  • Both ends 17, 18 of the conductor 15 lie on the outer circumference of the field 12 immediately adjacent to the inner peripheral surface of the edge 7.
  • One end 17 is directly through an outermost ring portion of the Conductor 15 and one end 18 formed by a rectilinear section, which starts radially from the innermost ring section.
  • Straight is here also the main longitudinal direction within which the strand material due to the profiling deviates from the straight lines.
  • the two against each other directed ends 19, 20 of the conductor 16 are by the outermost ring sections are formed and are accordingly immediately adjacent to the inner peripheral surface of the rim 6.
  • connection conductors 21, 22 provided, which of the ends 17, 18 over straight sections are guided through the field 13 and then from each other directed away or respectively directed against one of the ends 20, 19 corresponding to the outermost portions of the conductor 16 the inside of the edge 6 is curved up to connection points.
  • Body 5 two connecting bodies 23, 24 immediately adjacent at a distance attached to each other, which each have a base made of insulating material, e.g. Hard ceramic. Go from the base of the smaller body 23 two immediately adjacent terminal lugs 25, 26 and from Base of the body 24 a terminal lug 27.
  • the flat material strips existing conductor lugs are radial to axis 10 and penetrate the edges 6, 8 from the outside to the inside so that their inner ends at the bottom 9 or at the ends 19, 20th of the conductor 16 or at the associated outer ends 30, 32 of the conductor 21, 22 are exposed to form the connection points.
  • the inner ends 29, 31 of the conductors 21, 22 are connected via electrically conductive connectors 28 the respective end 12 or 18 immediately adjacent to the inside connected to the edge 7.
  • the end 30 is only on the flag 25, the End 20 only connected to the flag 26. Both are at flag 27 Ends 19, 32 connected.
  • All conductors 15, 16, 21, 22 consist of the same, profiled starting material, which is why the description of the respective leader alike also applies to any other of these leaders.
  • the conductors 21, 22 exist only from a strand material of slightly larger or double thickness than the conductors 15, 16, but these are in terms of Material, the profiling, the fastening, the height, the position the level of the surface 9 and the type of connection to the Flags 25 to 27 the same or similar. At least one of the conductors 15, 16, 21, 22 could also partially or completely over its length be permanently shaped or curved.
  • the conductor 16, 21 and 15, 22 is at right angles to the floor 9 protruding anchors 34, which in one piece connect its longitudinal edge 35 lying at the bottom 9 and only in View of the front 11 curved according to this edge 35 are.
  • the anchors 34 are evenly distributed over the length of the conductor, preferably reach at most over a solid wave and have intermediate distances, between a full wave and a maximum of four full waves, especially around one to two full waves.
  • Each anchor is 34 thus only spade-like in view of the front 11 the associated longitudinal sections of the parallel longitudinal edges 35, 36 curved, is at least about the longitudinal edge 35 Distance between the edges 35, 36 or further ahead and forms each at least one convex and immediately on the other side a concave flank, which over its height or that of the conductor 16, 21 goes through continuously.
  • the anchor 34 can only be simple, S-shaped or similar be curved or on one and / or other side of the longitudinal median plane of the conductor profile.
  • the spacing of the anchors 34 deviates from the profiling division, so that neighboring anchors differ Have shapes and positions in relation to the longitudinal median plane 38, which they cross.
  • the front sectional plane of the body 3 to 5 is in the central plane 38 of the conductor 16.
  • the conductor 15, 16, 21, 22 becomes transverse to it Main longitudinal direction 37 or parallel to the central plane 38 in the front of the dry bottom 9 pressed so that all the anchors 34 at the same time into the bottom in the manner of acute-angled piercing tips 9 penetrate, thereby creating their receiving recesses in the bottom 9 and on their flanks then with their flanks and side edges all over are embedded tightly.
  • the edge 35 can do so without penetrating strike at the bottom 9, opposite it at a gap remain and / or partially penetrate into the ground like the anchors 34. It is also conceivable for the strand material of the respective conductor so widen that its longitudinal edge 35 in the plane of the apex of the individual projections 35 then not present continuously or goes through in one plane and the resulting edge strip is continuously embedded in the floor 9.
  • the central plane 38 is parallel to the longitudinal direction 37 and at right angles to the bottom surface 9 or layer level 39 of the conductor 16, 21, which here is indicated in the middle of the height of the conductor.
  • the edges 35, 36 are continuously parallel to level 39 and have all conductors equal distance from each other.
  • the longitudinal edges 35 of adjacent conductor sections and / or all conductors are also in a common layer level as their edges 36.
  • the longitudinal direction 41 of the armature 34 is perpendicular to level 39 and parallel to level 38
  • Profiling results in that compared to the material thickness of a few Hundredths of a millimeter much wider profile bandwidth 42 of the conductor 16, 21, in the middle of which is level 38.
  • the anchor 34 can be like that remaining conductors in at least one cross-section up to all cross-sections, which are parallel to planes 39, 43, continuously to the side edges or go to the top.
  • means 40 can be created be what a visible glow of the conductors 21, 22 during operation or prevent visible glow of the conductor 15.
  • the leader 21, 22 but could also be connected so that it operates both Conductor 15, 16 glows visibly, so that such areas of field 13, which are not occupied by the conductor 16, visibly glowing by the conductor 21, 22 are filled out.
  • the conductor 21, 22 crosses in view of the front 11 none of the other conductors and still lies completely and like that Head 15, 16 visible on the front 11 of the bottom 9 because it is total is laid in the heating conductor level. This results in a very space-saving design, especially with regard to the axial extent the heater 1.
  • each individual shaft forms a solid shaft or each continuous section has a compensation section 33, which, in the manner of a longitudinal spring, any thermal longitudinal expansion reversibly absorbs by deformation without this the bandwidth 42 would be changed significantly.
  • the anchors 34 can also be deformed without the base 9 to enlarge their recesses, slightly in the case of elongation dodge.
  • the conductor 16, 21 thus forms over its length continuously a plurality of mutually closing sections 33, the Length according to the profile or length division of at most 10 or 6 mm and at least 2 mm at most 2 or 3 times is greater than the profile bandwidth 42, in a developed or in one Level stretched condition of the conductor 16, 21 is the height of each Anchor 34 from e.g.
  • Anchor 34 can be 3 to 6 times this greatest width of the armature, which is acute or symmetrical in development is trapezoidal. Most anchors 34 are asymmetrical to that lying between their side edges and to direction 37 or to Levels 38, 39 rectangular center plane 43 formed and the Edge zones forming side edges lie obliquely to plane 38, 39.
  • the length of a full profile or solid shaft corresponds to two opposite ones Arches as well as two legs, one solid shaft with its opposite Thighs can reach level 38.
  • the Angle between diverging wave legs is in the extended Condition of the waveband expediently at most 45, 40 or 35 ° and the leg opening is at least 1.5 to 2 times or at most 3 or 4 times wider than the corrugated floor.
  • the same also applies to the shape of the armature 34.
  • the conductor 21, 22 can by the electrical power applied to him and / or by the neighboring electrical power Sections of the conductor 15 and 16 are heated. In any case the described light inhibition 40 is reached.
  • the conductors 21, 22 form an axial plane 44 of the field 12 on both sides, 13, 14 or the axis 10 or the edge 6, 7 lying symmetrically, straight strip sections, which the edge 7 in the area of a passage Enforce 45.
  • the edge 7 on the back one have groove-shaped recess, which receives both conductors 21, 22, so that they are covered closed to the front.
  • the connectors 28 lie approximately on the curve of the outermost sections of the conductor 15. Its innermost section of curvature goes in a straight line outward and the end 18 forming band section over and the straight band sections of the conductors 15, 22 close aligned with each other.
  • the outer band sections of the conductors 21 and whose arc sections lie on the curve of the outermost Portions of the conductor 16 and form the ends 30, 32.
  • the rod-shaped straight and cylindrical is also located in the axial plane 44 Temperature sensor 47 of a control device such as a temperature limiter 46, of which the associated switch contacts receiving Base is formed by that of the body 24.
  • the sensor points two rods with different coefficients of thermal expansion. namely an outer tube and an inner rod lying in this.
  • On Rod e.g. the outer tube is rigidly attached to the base and the other actuates the contacts located in the base.
  • the limiter 46 may also have a signal contact or the like, e.g. for a hot display of the hotplate included.
  • the sensor 47 is parallel to the plane 39 of the edges 36 and this with a center distance opposite, which is at least as large as the distance of the edges 36 from the floor area 9, at most 3 times as large as this distance and in particular is approximately twice as large.
  • the height distance of the edges 36 is approximately between 1 and 2 times the width 42 and can as the width 42 between at least 2 and at most 5, in particular be between 3 and 4 mm.
  • the one with constant external cross sections over its length Sensor 47 penetrates radially through a closely matched opening or Bore in the edge of the body 3 and / or in the edge 6 and one corresponding opening in the edge 7, the latter the same opening as can be for the conductors 21, 22.
  • the free end of the sensor 47 is at least sufficient or only up to zone 14 and beyond that perpendicular to it Axial plane 49 of the axis 10 only slightly.
  • zone 14 can the sensor 47 opposite the bottom surface 9 on a projection or The like supported radially or transversely to plane 39 under compressive stress or be rigidly mounted with fasteners.
  • In the area of Field 12 or 13 is the sensor 47 over the entire associated Length of the surface 9 freely opposite and from the forehead of the edge 6 or 7 set back.
  • Adjacent arc sections of the conductor curved about the axis 10 15 and 16 go on both sides at a distance adjacent to level 44 or to the straight sections of the conductors 21, 22 and to the sensor 47 tight hairpin bends 48 or an arc in one piece. All neighboring Arch sections have the same clear radial distances over their length from each other and these distances can be in a field 12 be slightly smaller than in the other field 13. All hairpin bends 48 on the respective side of the plane 44 adjoin a plane parallel to this whose distance from plane 44 is greater than the distance between the arc sections and their clear distance from the rectilinear sections of the conductors 15, 21, 21 are the same size as the distance between the arc sections.
  • Zone 50 goes over both Fields 12, 13 through to zone 14 and is only interrupted by edge 7, insofar as it is formed by the surface 9.
  • the sensor 47 When the conductor 15 or 16 is in operation, the sensor 47 becomes less subjected to high thermal loads than if it were the more powerful zones would cross, so that it does not slow down when heating up, but delays responds.
  • the sensor 47 In field 12, the sensor 47 is through the straight section of the conductor 15, however, is subjected to a somewhat greater thermal load than in the field 13, so that when the field 12 is operated alone and thermally Applying only the associated part of the sensor length overheating this field 12 is avoided.
  • the innermost section of the arch of the conductor 16 goes on the side facing away from the bushing 45 level 49 through level 44 and all other arch sections are connected to each other via hairpin bends 48. All arc sections of the conductor 15 also go to level 49 on this side in one piece by.
  • the turns 48 of the arc sections of the conductor 16 can on the side of level 49 facing away from zone 50 closer than lying on the other side.
  • the ends 17, 29 of both conductors 15, 21 are for reduction the wave height at most over one or two wavelengths pressed flat or flat, namely one end 29 in the area of an anchor 34, which can connect to the associated end edge.
  • This lead 34 is folded by 180 ° or around the edge 35 against the end 29, so that two plate-shaped jaws 51, 52 are formed, which initially V-shaped at an acute angle to each other.
  • the other end 17 can be transverse to plane 39 and / or parallel to direction 37 so that the two ends 17, 29th lie flat against each other.
  • the beacons 51, 52 with a Tongs, like a welding gun, against each other and towards the end 17 pressed and all three layers by a fastener 53, e.g. a spot welded rigidly together.
  • a fastener 53 e.g. a spot welded rigidly together.
  • the cheek 52 protrudes from surface 9, but could also be directed towards it.
  • at least one of the layers could be immediately one in the ground 9 engaging anchor form, which is flat or according to the Ankem 34 can be curved.
  • 21 Immediately adjacent to each other at a distance at least one conductor 15, 21 has an armature 34 for the connector 28a on, so that mechanical loads on the connection point by thermal Strains are connected.
  • the flat material strip 27 passes through, as explained using the sensor 47, the bodies 2, 3, 5 and forms immediately adjacent to the inside of the edge 6 the angled against the bottom 9 jaw 51a which to form the receptacle for the respective end 19, 32 Jaw 52a connects.
  • the respective end 19, 32 can over the respective Jaw protrude in direction 37 or transverse to level 39 or it can project the respective jaw in these directions.
  • This liaison lies between two near anchors 34.
  • the outer end of the Strip 27 is on a laterally projecting connection, such as one Flat tongue of the body 24 by welding or the like connected.
  • the strips 25, 26 engage in the base 23 and are how to connect connectors of the body 24 to external leads which from a manually operated control device, such as a rotary switch out.
  • the respective strip can be seen from the inside of the Edge 6 pushed through and then with the associated base or the associated connection by welding, plugging, clawing or the like,
  • the ends 18, 31 of the conductors 15, 22 level with their butt End edges together, between which there should also be a small gap can.
  • the jaws 51 b, 52 b are by a separate, U-shaped Component formed, which instead of from the edge 35 from the edge 36 forth or this edge 36 is covered with its crossbar.
  • Both ends 18, 31 are with separate fastening members 53 attached to the electrically conductive jaws 50b, 52b.
  • Each of the connection connections 1 through each of the connections Figures 3 to 5 be formed.
  • FIGS. 6 and 7, as in FIGS. 3 to 5, are mutually corresponding Share the same reference numerals as in the other figures, however used with different letter indices, which is why all parts of the description apply mutatis mutandis to all figures.
  • the conductors 15c, 21c, 22c and their adjoining ends are made here in one piece from the same strand material, so that there is no need for separate connectors 28.
  • the area of the conductor 15c or 16c contains a unit length of the waveband at least 1.5 and at most 3 or 4 times the length of strand material, in particular at least twice the length.
  • the area of Conductor 21c, 22c can have a unit of length almost equal to its length Length of strand material included.
  • the leader 15c or 16c expediently contains the length unit of the conductor 21c, 22c only at least one third and at most two thirds, in particular half of strand material.
  • FIG. 7 is elongated in plan view like the edge 6d Rectangular and on both sides of the field 12d are two separate ones Fields 13d, which in operation with field 12d are elongated, form a rectangular cooktop.
  • the conductors 16d of the fields 13d can also be separate from one another or only together be operable. Your conductor sections closest to edge 7d go in one piece on the page mentioned via a 6 elongated connection conductors or via a separate connection conductor with connector according to Figures 1 to 5 into each other. This Conductor is guided through a passage 45 of the edge 7d and therefore covered.
  • the edge 7d is integral with the long sides of the edge 6d on.
  • the conductor 21 d passes through a parallel to these long sides Implementation 45d of the edge 7d immediately adjacent to Inside of the edge 6d, since the outermost conductor sections of the conductor 15d, 16d are aligned with one another adjacent to this long side.
  • the Conductor 22d passes through an implementation lying obliquely to this long side 45d and accordingly obliquely also lies the body 24d Controller 46d, sensor 47d and zone 50d.
  • the conductors 15d, 16d, 21d, 22d can be executed in any of the ways described, like that of FIG. 1 and be connected.
  • the flags 25d, 26d lie in the a field 13d and the flag 27d in the other field 13d, so that in Field 12d no connecting lug protruding from the outside and also no associated body 23d is required
  • the connection of the conductor 15d takes place exclusively through bushings or channels 45d, which lie within the outer circumference of the body 3d or the edge 8d and directly connect the field 12d to the fields 13d.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Incineration Of Waste (AREA)
  • Tunnel Furnaces (AREA)

Claims (11)

  1. Elément chauffant, tel qu'un élément de chauffage par rayonnement, comprenant un corps de base (2) et présentant autour d'un axe médian (10) un périmètre extérieur et à l'intérieur de celui-ci une face antérieure (11) ainsi qu'au moins une zone de chauffe (12, 13) et un centre (14), étant prévue au moins une résistance de chauffage disposée pour une radiation thermique de la face antérieure (11) et formée par un conducteur chauffant (15, 16), laquelle résistance forme des domaines de chauffage extérieurs au plus prés du périmètre extérieur ainsi que présentant des extrémités de connexion (17 - 20) et au moins une extrémité de connexion (21, 22) allongée dans une direction longitudinale principale (37) étant prévue pour la conduction d'une puissance électrique connectée, laquelle est soumise pendant le service de chauffage à des dilatations longitudinales par charge thermique, laquelle définit au moins un plan de positionnement (39) par rapport au corps de base (2), qui présente deux extrémités de connexion (29 - 32) et qui est composée au moins en partie d'un matériau en forme de brin électriquement conductible,
    caractérisé en ce que le conducteur de connexion (21, 22, 21c, 22c, 21d, 22d) présente des moyens (40) de compensation pour les dilatations, le conducteur de connexion présentant entre ses extrémités au moins une section de compensation (33) élastique en direction longitudinale en tant que moyen de compensation.
  2. Elément chauffant d'après la revendication 1, caractérisé en ce que le conducteur (15, 16, 21, 22) est réalisé en forme de ressort longitudinal sur la plus grande partie de sa longueur soumise à des dilatations thermiques.
  3. Elément chauffant d'après la revendication 1 ou 2, caractérisé en ce qu'au moins une section de compensation (33) fait directement suite au moins à un ancrage (34), situé avec un écart entre les extrémités, du conducteur (15, 16, 21, 22) par rapport au corps de base (2), plusieurs sections (33) étant notamment prévues consécutivement et situées respectivement entre deux ancrages (34).
  4. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une section de compensation (33) du conducteur (15, 16, 21, 22) est ondulée, en ce que la respective section (33) est composée d'un matériau plat et qu'elle est située à peu près parallèlement par rapport à ou encore auprès de la face antérieure (11) du corps de base (2).
  5. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une section de compensation (33) du conducteur (15, 16, 21, 22) s'engage dans un lieu d'encrage directement dans le corps de base (2), la section (33) formant notamment au moins une saillie d'ancrage (34) et une pointe d'insertion pour l'insertion dans un corps isolant (3) du corps de base (2).
  6. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une section de compensation (33) du conducteur (15, 16, 21, 22) forme sur une face longitudinale plusieurs saillies (34) consécutives, au moins une section (33) étant située de préférence à proximité immédiate d'au moins une résistance de chauffage (15, 16) à l'intérieur de la zone de chauffe (12, 13).
  7. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une section de compensation (33) du conducteur (21, 22) présente une résistance spécifique inférieure par rapport à une résistance de chauffage (15, 16), la section (33) du conducteur de connexion (21, 22) ne montrant aucune forme visible d'incandescence quand elle est chargée de puissance connectée ou présentant au moins une température d'incandescence inférieure par rapport à la résistance de chauffage correspondante.
  8. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une section de compensation (33) du conducteur (15, 16, 21, 22) présente des écarts différents de l'axe médian (10), au moins une section (33) étant située radialement plus vers l'intérieur par rapport aux domaines de chauffage extérieurs.
  9. Elément chauffant d'après une des revendications précédentes, caractérisé en ce que l'on prévoit deux résistances de chauffe (15, 16) et zones de chauffe (12, 13) premières et deuxièmes individuelles et limitrophes, un conducteur (22) pour une première résistance de chauffe (15) étant mené à partir de la deuxième zone de chauffe (13) vers la première résistance de chauffe (15) et en prévoyant pour les résistances de chauffe (15, 16) auprès du corps de base (2) au plus deux corps de connexion (23, 24) avec trois points de connexion branchés sur les résistances de chauffe (15, 16), la deuxième résistance de chauffe (16) et le conducteur (22) pour la première résistance de chauffe (15) étant branchés sur un point de connexion.
  10. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une zone de chauffe (12, 13, 12d, 13d) est délimité par un moyen d'écrannage (6, 7, 6d, 7d) saillant au-delà de la face antérieure (11) ou similaires, lequel moyen croise au moins un conducteur (21, 22, 21d, 22d) en vue sur la face antérieure (11), le moyen d'écrannage (7, 7d) recouvrant le conducteur (22, 21d, 22d) et le moyen d'écrannage (7, 6d, 7d) étant placé sur le conducteur (22, 21d, 22d) en tant qu'élément constructif individuel et d'une seule pièce en lui-même.
  11. Elément chauffant d'après une des revendications précédentes, caractérisé en ce qu'au moins une extrémité de connexion est branchée par deux mâchoires de connexion (51, 52, 51a, 52a, 51b, 52b) opposées l'une à l'autre, les mâchoires de connexion, étant constituées par un élément constructif en forme de U, de préférence au moins une mâchoire de connexion (51, 52) étant réalisée d'une seule pièce avec le conducteur (21).
EP96107634A 1995-05-17 1996-05-14 Elément chauffant Expired - Lifetime EP0743804B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518109A DE19518109A1 (de) 1995-05-17 1995-05-17 Strahlungs-Heizer
DE19518109 1995-05-17

Publications (3)

Publication Number Publication Date
EP0743804A2 EP0743804A2 (fr) 1996-11-20
EP0743804A3 EP0743804A3 (fr) 1996-12-11
EP0743804B1 true EP0743804B1 (fr) 2003-03-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107634A Expired - Lifetime EP0743804B1 (fr) 1995-05-17 1996-05-14 Elément chauffant

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US (1) US5892205A (fr)
EP (1) EP0743804B1 (fr)
AT (1) ATE235136T1 (fr)
DE (2) DE19518109A1 (fr)

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US6602439B1 (en) * 1997-02-24 2003-08-05 Superior Micropowders, Llc Chemical-mechanical planarization slurries and powders and methods for using same
GB0221519D0 (en) * 2002-09-17 2002-10-23 Ceramaspeed Ltd Radiant electric heater
GB0316627D0 (en) * 2003-07-16 2003-08-20 Ceramaspeed Ltd Radiant electric heater
DE102004023847B4 (de) * 2004-05-13 2013-12-05 BSH Bosch und Siemens Hausgeräte GmbH Kochfläche mit einer Glaskeramikplatte
DE102005036581A1 (de) * 2005-08-01 2007-02-08 Electrovac Ag Heizband für einen elektrischen Heizer, Heizer mit einem derartigen Heizband sowie Verfahren zum Herstellen des Heizbandes
GB0811980D0 (en) * 2008-07-07 2008-07-30 Ceramaspeed Ltd Radiant electric heater
JP6219229B2 (ja) * 2014-05-19 2017-10-25 東京エレクトロン株式会社 ヒータ給電機構
DE102016007920A1 (de) * 2016-06-28 2017-12-28 Sabine Maurer Der Erfindung lag die Aufgabe zu Grunde, ein einlegbares Widesrstands-Heizelement aus leitfähigem Kunststoff bzw. Spezialcompounds, mit elektrischen Kontakten an ihrem Umfang in unterschiedlichste Baugruppen, Konstruktionen, Gerätschaften kontaktierbar si
DE102017222958A1 (de) * 2017-09-04 2019-03-07 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung und Verfahren zur Herstellung einer Heizeinrichtung
DE102018218245A1 (de) * 2018-10-24 2020-04-30 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung und Elektrokochgerät

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Also Published As

Publication number Publication date
EP0743804A2 (fr) 1996-11-20
US5892205A (en) 1999-04-06
EP0743804A3 (fr) 1996-12-11
ATE235136T1 (de) 2003-04-15
DE19518109A1 (de) 1996-11-21
DE59610228D1 (de) 2003-04-24

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