EP0771134A2 - Elément de chauffage radiant - Google Patents

Elément de chauffage radiant Download PDF

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Publication number
EP0771134A2
EP0771134A2 EP96116962A EP96116962A EP0771134A2 EP 0771134 A2 EP0771134 A2 EP 0771134A2 EP 96116962 A EP96116962 A EP 96116962A EP 96116962 A EP96116962 A EP 96116962A EP 0771134 A2 EP0771134 A2 EP 0771134A2
Authority
EP
European Patent Office
Prior art keywords
securing
base body
body component
edge
emitter
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Withdrawn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
EP96116962A
Other languages
German (de)
English (en)
Other versions
EP0771134A3 (fr
Inventor
Manfred Hasenfus
Eugen Wilde
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.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP0771134A2 publication Critical patent/EP0771134A2/fr
Publication of EP0771134A3 publication Critical patent/EP0771134A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—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
    • H05B3/744—Lamps as heat source, i.e. heating elements with protective gas envelope, e.g. halogen lamps

Definitions

  • the invention relates to a radiant heater, e.g. is suitable for heating hotplates or the oven of a stove, for heating a shielded environmental space such as a building or the like.
  • the heating radiation emitting transversely from a heating field or a heating plane which emanates from a radiation emitter, first penetrates a free, gas-filled or air-filled space and then emerges through a radiation outlet which is essentially closed at the periphery, for example through a radiation outlet radiation-permeable body, such as a glass ceramic plate.
  • a radiation outlet radiation-permeable body such as a glass ceramic plate.
  • the inside of this plate is roughly parallel to the heating plane and delimits the front of the room.
  • a flat shell-shaped base body of the heater which can be fastened as a ready-to-use unit with pressure to the inside of the plate, limits the space with the plate so that it is essentially free of flow openings or is almost gas-tight.
  • the space is then flat-disc-shaped from the free bottom surface of the base body, from its circumferential boundary projecting beyond the bottom surface to the exit and / or from the plate.
  • the heating field is ring-shaped, it can be bounded by an outer and inner circumferential boundary, each of which can extend to the continuous contact on the inside of the plate and can be resiliently resiliently tight against it.
  • the floor area and / or the circumference limitation therefore advantageously consists of an insulating or insulating material which is essentially not permeable to the radiant heat.
  • the bottom surface or a disk forming this can consist in one piece of a pourable insulating material, such as a pyrogenic silica airgel, to which binders, opacifiers and / or fibrous or non-fibrous reinforcing or reinforcing agents are mixed.
  • a pourable insulating material such as a pyrogenic silica airgel, to which binders, opacifiers and / or fibrous or non-fibrous reinforcing or reinforcing agents are mixed.
  • This insulating material is then pressed dry or wet so that it forms an inherently dimensionally stable component.
  • the edge can also consist of such an insulating material or be formed in one piece with the bottom.
  • the edge preferably consists of an insulating material which has greater dimensional stability or higher strengths with respect to bending, pressure or tensile loads than that of the base.
  • Such a material can be partially or for the most part a fiber felt, an expanded mica such as vermiculite or
  • the component is first produced from a wet stillage by sucking off the liquid in a mold as a moist cake, then possibly molded by cutting and finally dried at high temperatures.
  • opacifiers or binders are advantageously added, but the binders can be removed from the shaped body during drying by evaporation.
  • the pourable starting material likewise consisting essentially of individual particles, becomes so dry in one Form pressed to the shaped body that this has a thin surface layer similar to a plastic part made of integral foam, which is much more densely compressed than the adjacent core.
  • the floor could also consist of one of the materials described on the basis of the edge or contain such materials. Bottom and edge can be formed in one piece or form separate components which are continuously laid flat against one another for assembly and, if necessary, pressed against one another for sealing.
  • the base body can also contain one or more components made of materials, the strengths of which are higher than those of the boundaries of the space and which consist, for example, of metal or a rolled flat material, such as sheet metal.
  • a component can rest on the outer circumference of the edge and / or on the outside of the floor and shield it or support it flatly.
  • This component can therefore be formed by a sheet metal shell, on the edge of which connection or control body for the electrical connection and for the operation control of the heater can be attached so that they are essentially only on the outside of the base body or outside of flat space.
  • At least one working element for operating the heater is provided, which takes on different operating states, namely is more exposed to changes in temperature than the outside of the edge or bottom.
  • a working member lies at least partially at a distance from the immediately adjacent peripheral surface of one or two edges or from the bottom surface and is contactless with respect to the plate.
  • a working element can be a heating resistor, in particular an elongated lamp body, the temperature sensor or the like.
  • the temperature sensor can also form one of the basic body components mentioned, for example if the radiation emitter is only to be installed when the temperature sensor has already been installed.
  • this can contain a coiled or elongated heating resistor within a tubular envelope or one that is freely permeable to the heat radiation, which is kept at a distance from the inner circumference of the envelope by spacers and enclosed gas-tight or pressure-tight in the envelope in an oxygen-free atmosphere which can contain a protective gas such as halogen.
  • the casing forms one or more tubular connection nipples which protrude beyond the outer circumference of the casing, through which the protective gas is also filled and which are then closed, for example by fusion, in a pressure-tight manner.
  • the invention is also based on the object of providing a radiant heater or components thereof, in which disadvantages of known designs or of the type described are avoided and which, in particular, enables the respective component to be secured and / or assembled in a simple manner.
  • means for securing the position of the respective working member can be jointly mountable in two mutually perpendicular directions or form a corresponding assembly assembly.
  • the links which can be made in one piece or in several parts, are expediently used for centering transversely to the central axis or for securing parallel to this axis.
  • the securing or centering members therefore form stop surfaces lying transversely to one another for the working member to be secured.
  • a securing and / or centering element can also form a preassembled assembly with one or more of the basic body components mentioned, so that this assembly as a whole can then be assembled with the other components of the heater during assembly such that both the securing member as well as the component is essentially in the position required for operation.
  • the one-piece component can be, for example, the edge, the bottom and / or the temperature sensor or a partial body thereof.
  • Each of these components has sections which have an arc distance from one another of at least 45 °, 90 °, 120 °, 160 ° or more degrees of angle in the circumferential direction around the central axis and have equal or unequal distances from the central axis.
  • Several separate fuse links can also be on the same Component of the base body may be provided.
  • the respective securing member extends around the central axis by much less than the component.
  • the respective component of the base body can be designed so that it can be installed in front of the working member to be secured with it in the operating position, after which the working member is inserted into its operating position and simultaneously or subsequently brought into engagement with the securing member.
  • the securing member is formed by a component separate from the associated component, then it is expedient, partially so closely embedded in this component that the component cross-sectionally or securely surrounds the securing member on one or more outer peripheral surfaces.
  • the securing element can also be made in one piece with the component, for example from insulating material. In both cases, the material of the securing member continues in one piece in the inner or in the core of this component.
  • the securing member expediently has a securing surface for the engagement of the working member and this securing surface is advantageously at least partially adjacent to the heating plane or floor surface in the direction of the radiation exit.
  • the securing surface can be formed by a protrusion of the insulating base projecting beyond the base surface or heating plane, it advantageously consists of a different material than the base surface.
  • At least one of the components that form the edge or the bottom of the respective heating field space can be provided with a reinforcement separate from its described material, which has a greater length or larger cross sections than reinforcement fibers as a unit.
  • the reinforcement consists of a material whose strengths in the above sense are greater than that of the rest of the component and its surface-reaching material.
  • the reinforcement is expediently preassembled on the component before the respective working member is used in the operating position.
  • the reinforcement can therefore be fastened in a similar manner, as explained on the basis of the holding section of the respective securing member.
  • the reinforcement expediently runs in one piece around the central axis or the like via an arc angle which is greater than 30 ° or one of the above-mentioned arc angles and can also be more than 270 ° or 300 °.
  • the reinforcement can be provided for directly supporting the securing member and form with it a preassembled structural unit, which is then connected in a fixed position during the manufacture of the associated basic body component or thereafter.
  • the means according to the invention for holding down or centering a heating energy emitter can be produced and assembled very easily, and designs are also conceivable in which, in addition to the components of the base body which are provided anyway and do not only include the emitter, no further links for securing or centering required or to be assembled.
  • the securing means is formed in one piece with one of the insulating bodies and / or with the outermost jacket of the temperature sensor.
  • the securing member expediently also projects into the room if it is provided on a peripheral surface of the peripheral boundary.
  • This circumferential boundary defines an enveloping surface over the largest part of its circumferential extent, and the securing member projects radially outwards and / or inwards over this enveloping surface.
  • the flat disc-like heater 1 has a shell-shaped base body 2 made of several one-piece components, namely a disc-shaped base 3, annular or circular closed edges 4, 5, an outer, thin-walled shell 8 made of sheet metal or the like and a temperature limiter or temperature sensor 9 on, which can form a pre-assembled unit.
  • Bottom and edge 3, 4, 5 can each consist of one of the different insulating materials mentioned and / or a mixture thereof.
  • the thermal insulation value of the floor material is expediently higher than that of the edge material, the strength of which in turn is higher than that of the floor.
  • the components 3 to 5 and 8 extend symmetrically about a central or central axis 10.
  • the outer edge 4 lies with its outer circumference continuously on the inner circumference of an edge of the shell 8, through which the outer circumference of the base 3, possibly with a small gap distance, is centered.
  • the component 8, which can also be formed only by a bottom or an edge, serves for the outer shielding and the stiffening of the components made of insulating material.
  • a ring-shaped or continuous to the axis 10 heating field 11 is formed, which adjoins the inner circumferential boundary 14 of the edge 4 and the outer circumferential boundary 15 of the edge 5 lying coaxially therein or to the axis 10 .
  • An unheated middle zone 18 lying inside and / or outside the boundary 15 can be formed about the axis 10.
  • Each boundary 14, 15 defines an envelope surface 19, which is only indicated by the edge 4 and here is approximately cylindrical and / or conically widened at an acute angle to the outside.
  • an emitter 20 for infrared heating radiation is arranged in a fixed position about the axis 10.
  • the emitter 20 is formed by a rod-shaped or tubular halogen lamp which, within an elongated, rod-shaped or tubular housing 23, contains a coaxial, coiled heating resistor 22 in a protective gas filling.
  • the resistor 22 is held in a contact-free manner on the inner surface of the housing 23 with spacers 24 spaced apart from one another.
  • the parts 20, 22, 23, 24 are arranged in a ring coaxially to the axis 10 and form a heating section 25 which extends over an arc angle of at least 180 to approximately 360 ° and lies continuously in a plane perpendicular to the axis 10.
  • This plane can define the heating plane 13 of the heater 1 in the form of the central plane, the rear or the front end plane of the emitter 20, which can also be defined radially inside and / or outside the emitter 20 by the front, middle end plane of the bottom 3.
  • the resistance wire 22 is not coiled in its area, so that at most less or no heating radiation is emitted.
  • a bare or exposed heating resistor with essentially the same properties or the same design and arrangement can be provided, for example a resistor made from a flat strip, which is anchored and held in the bottom 3, and instead of the spiral one has tight curl.
  • Such a further emitter can be spaced radially inside and / or be provided outside the emitter 20, the radial distance from the boundary 14 suitably corresponds approximately to its diameter or is at most two or three times thereof.
  • the base 3 With a radial spacing of this order of magnitude, the base 3 forms a front, flat base surface 27 within the emitter 20, which is located between the end planes of the emitter 20 closer to the rear end plane. With a corresponding or smaller radial spacing, the base 3 outside the emitter 20 forms a flat, annular end face which is offset in relation to the front and lies between the end faces mentioned, in particular in the heating plane 13.
  • the inner circumference adjoining this end face which is widened conically at an acute angle, forms the boundary 14 with the inner circumference of the edge 4 and can be offset radially inwards with respect to the edge 4 and / or radially outwards with respect to the outer circumference of the emitter 20.
  • the edge 4 lies over its entire surface, the front, flat end face 29 of which is offset from the edge of the shell 8 and lies in the plane 32 perpendicular to the axis 10.
  • the heater 1 is placed with this end face 29 in a substantially gas-tight or pressure-tight manner against the inside 33 of a cover or plate 30 with pressure and fixed in position, which consists of a material which is permeable to the heating radiation, such as glass ceramic.
  • the inner circumference of the end face 29 or its meeting with the enveloping surface 19 defines the outlet 31 lying in the plane 32 for the heating radiation.
  • the end face of the edge 5, like the edge 4 can extend to the plane 32 or be set back in relation to it, but projects beyond the bottom surface 27. In their area, the thickness of the bottom 3 is at most as large or smaller than that Distance between plane 32 and surface 27 or plane 13.
  • the radiant heat is emitted from the emitter 20 at right angles to the plane 13 in the main radiation direction 34, but also across all areas obliquely to the plane 13 through the outlet 31 and the plate 30, so that it has the greatest effect in the area of the emitter 20 and the radiation density up to the limit 14 has a lower gradient than up to the axis 10.
  • the outside of the plate 30, on which a plurality of heaters 1 can be arranged at a distance from one another, serves as a horizontal cooking surface of a stove, on which the cooking vessels to be heated can be placed in alignment with the respective heater 1.
  • securing and centering means 35, 36 are provided, each of which has at least one securing or centering member 37, 38 for contain the system on the outer circumference of the emitter 20 which extends along its longitudinal central axis or is convexly curved about this axis.
  • the system is provided directly on the outer circumference of the housing 23, which is curved about the axis 10 and the longitudinal axis of the emitter 20, and not on projections, such as evacuation or filling nozzles, which project transversely therefrom, although such a design is also conceivable.
  • Links 37, 38 are located at least partially or exclusively on that side of an axial plane of the axis 10 which is remote from the connection sections 26. This plane can lie at right angles to that axial plane which lies between the sections 26. Only two links 37 and 38 are provided symmetrically on both sides of this axial plane, which are at an arc distance of at most 150 ° and at least 45 °, in particular about 90 ° from each other.
  • Two links 37, 38 each form a preassembled unit with one another and with one of the edges 4.
  • the two members 37, 38 each lie in the same circumferential area of the emitter 20 or in a common axial plane of the axis 10.
  • the securing member 37 made of heat-resistant material, such as steel, is used for the positive but resilient hold-down of the emitter 20 against the front of the base 3 , on which the emitter 20 can be locally bounded at a distance over its circumference or can rest against the aforementioned outer circumference of the housing 23 without play.
  • the link 37 is bent in a U-shape from round wire in such a way that its parallel legs 39 project radially outward with their free ends beyond the outer circumference of the emitter 20 and the curved U-crosspiece lies radially within the inner circumference of the emitter 20.
  • Leg and crosspiece lie continuously in a common plane parallel to and at a distance from the plane 13, 32 in the front end plane of the emitter 20.
  • the legs of the link 37 form a flat holding section 39, which in the Edge 4 is completely embedded or pressed in during its production, so that all of its surfaces are closely enclosed by the edge material and the holding section 39 is closer to the end face 28 than to the end face 29.
  • the link 37 forms a securing section which is also continuous in the plane mentioned and which, at the front end face of the housing 23, abuts with each leg only at a single contact point 41 in the form of a point or line, possibly under pretension . So each security point two directly adjacent contact points 41 are provided in the circumferential direction at a short distance. This results in only a very small heat transfer from the emitter 20 to the member 37, the non-contacting and embedded sections of which serve to dissipate heat from the contact points 41, the legs being continuously non-contacting with one another.
  • the fuse assembly 4, 7, 38 is to be mounted against direction 34.
  • At least one of the parts 4, 37, 38 with an additional member or a reinforcement 40 forms a preassembled unit which, before or after the positionally correct arrangement of at least one emitter 20 on this unit and / or on the base 3 on the rest of the base body 2, is in the correct position assemble.
  • Parts 3, 4, 8, 37, 38, 40 can also form a corresponding unit in any pairing.
  • the reinforcement 40 is formed by an inherently stiff, curved and one-part or at most five-part strand section, such as a wire. This passes about the axis 10 continuously approximately as far, as explained with reference to the heating section 25, so that its ends are at a distance from one another, namely in the front view they do not extend into the areas of the connecting sections 26 or the sensor 9.
  • the reinforcement 40 lies continuously in a plane parallel to the plane 13, 32 with a distance between the distance between the planes 28, 29 and between the circumferential surfaces of the edge 4, being approximately in the middle between these circumferential surfaces and closer to the end surface 28 than at of the end face 29 and on the side of the link 37 facing this.
  • the reinforcement 40 crosses the holding section 39, which projects radially outwards and inwards over the reinforcement 40, but not over the outer peripheral surface of the edge facing away from the envelope surface 19 4, against which the parts 37, 40 are set back.
  • the reinforcement 40 therefore lies tangentially on the legs 39 at two points and is positively or adhesively fastened at these points, for example by wrapping, welding or the like.
  • the link 37 or the section 39 forms a preassembled unit with the link 40 prior to attachment to the associated component 4 or prior to its manufacture. This applies to all existing links 37.
  • the links mentioned are aligned in a contact-free manner with respect to the inner surfaces of this mold in that the portions of the links 37 which later project freely are fixed in a correspondingly aligned position outside the molding space.
  • the links 37, 40 can consist of the same or similar materials and / or have the same material cross sections.
  • the respective centering link 38 also projects radially beyond the associated boundary 14 or the region of the envelope surface 19, which lies between the end faces 28, 29 or the planes 13, 32.
  • the link 38 consists of an insulating material which, like the other insulating materials, can serve for thermal insulation, electrical insulation and also insulation against the heating radiation.
  • the link 38 like the links 37, 39, extends around the axis 10 over an arc angle of less than 20 ° or 10 °, but takes up a slightly larger arc angle compared to the link 37, 39 and lies symmetrically to the central plane between the legs 39 or the lateral outer edges of the link 37 formed thereby.
  • the link 38 is formed in one piece with the associated component 4, extends to the boundary 14 and projects beyond this as a projection which can extend from the end face 28 to the end face 29.
  • the projection 38 protrudes radially furthest on both sides of the link 37, so that the holding section 39 is also completely embedded in it.
  • the end face of the projection 38 Adjacent to or from the front end face of the link 37, the end face of the projection 38 can approach the envelope surface 19 or the boundary 14 obliquely in the direction 34, so that it does not further obstruct the beam path in this area, but rather the exit 31 in this area Range extends to the envelope surface 19.
  • the surface of the widened to the limit 14 member 38 facing the outer ring circumference of the emitter 20 lies in a small radial gap distance directly adjacent to the outer circumference of the housing 23 in a plane approximately perpendicular to the plane 13, 32 and extends to the plane 13. This projection surface forms one Stop for the emitter 20 when it performs radially directed movements against the member 38.
  • the associated or inner circumferential boundary of the end face of the base 3 supporting the edge 4 lies in axial section with the respective distance between the stop surface and the boundary 14, so that the projection 38 reaching as far as the end face 28 is also pressed against the base 3, when the heater 1 is pressed against the plate 30.
  • the bottom 43 of the component 8 like the rear end face of the bottom 3 in the radially outer area adjoining the shell edge 42, can form a pre-offset ring zone for pressure support of the rear end face of the bottom 3 in the area of the rim 4, while the bottom 3 radially within this ring zone is continuously at a gap distance from the floor 43.
  • the embedding region of the component 4 and the member 28 are under axial compressive stress, by means of which the embedding of the members 37, 40 and the member 38 are solidified. Due to the pressure elastic properties of the insulating material also the link 38 resilient radially within small limits.
  • the contact of the emitter 20 on the link 38 is likewise only provided in the form of points or lines.
  • the attachment of the connecting sections 26 to the base body 2 likewise forms securing or centering means, the connecting sections being able to be guided outwards in a sealed manner between the abutting end faces 28 which are provided with corresponding grooves in such a way that they form-fit in the axial and / or circumferential direction or backlash-free against the components 3, 4 are secured in position, while they are secured in their longitudinal direction by friction against the components 3, 4.
  • the connecting sections 26 penetrate the edge 42 in the region of one through opening without contact.
  • the rod-shaped temperature sensor 9 also penetrates the edge 42 in the area of a through opening and closely fitting only the edge 4.
  • the central longitudinal axis of the sensor 9 can intersect the axis 10 at right angles.
  • the straight-line sensor 9 lies continuously in the respective distance from and between the planes 13, 32 and at a distance from the front end face of the emitter 20 and parallel to the plane 13, 32. It extends slightly from the boundary 14 beyond the axis 10, crosses in Front view of the heating section 25, with its outer circumference under tension against the front end face of the one-piece with the bottom 3 formed edge 5 and protrudes only slightly beyond the boundary 15 with its free end.
  • the sensor 9 is expediently designed as an elongation sensor which has two longitudinal sections with different thermal expansion sections, for example an outer tube and an inner rod arranged to move longitudinally therein, each of which can have the smaller expansion coefficient. Accordingly, it can Outer tube or the inner rod made of metal or a ceramic material, such as quartz glass, and be subjected to tensile or compressive stress during operation.
  • One of the two longitudinal sections is secured in the longitudinal direction in a form-locking manner on the housing of a base 44, which in turn is attached to the component 8 lying on the outside of the edge 42 completely between the bottom 43 and the plane 32.
  • the other longitudinal section actuates one or more switches arranged within the base housing, via which switches the emitter 20 is partially or completely switched off above a limit temperature.
  • connection bodies 46 In the circumferential direction, immediately adjacent to the base 44, there are connection bodies 46 radially outside the edge 42, which are firmly connected to the connection sections 26 and can also be secured in position on the component 8.
  • a further, separate connector body 45 made of hard ceramic is fastened by plugging in at the edge 42, which, like the base 44, is wired to the connector bodies 46 by lines which are encased by insulation.
  • the resistor 22 is thereby connected in series with the connecting bodies 44, 45, which in turn serve to connect the heater 1 to two operating or device supply lines, via which the heater 1 can be switched on manually or switched to different operating powers.
  • two coaxial heating fields 11, 12 are provided, of which the outer and / or inner is bounded in a ring; the inner heating field 12 can also pass through to the axis 10.
  • the two heating fields 11, 12 are separated from one another by the edge 5, which is a preassembled unit with the edge 4 and the securing and centering means 35, 36 for two Emitter 20, 21 and with separate reinforcements 40 for both edges 4, 5 forms.
  • Each heating field 11, 12 is assigned a separate or separately switchable emitter 20, 21, for example a lamp of the type described.
  • the inner circumference of the inner edge 5 here forms the outer circumferential boundary 16 of the inner field 12, to which the associated emitter 21 can reach approximately with its outer ring circumference for centering over the circumference.
  • the enveloping surfaces 19 are also shown for the boundaries 15, 16.
  • the convex boundary 15 is tapered towards the front at an acute angle and the concave boundary 16 is correspondingly widened.
  • the taper of the boundary 16 is only provided from the level 13 to the level 32, while the taper of the boundary 15 can pass through to the end face 28.
  • Both emitters 20, 21 lie in the same plane 13, with respect to which the common plane of the end faces 28 of both edges 4, 5 is offset to the rear, but lies in front of the rear end plane of the emitters 20, 21.
  • the connection sections 26 of the inner emitter 21, like the connection bodies 26, lie between the connection sections or connection bodies of the outer emitter 20 and between the connection bodies 44, 46 there is the connection body 45, to which all the emitters 20, 21 are wired.
  • spacers or centering members 38 are not approximately square, but are elongated in the circumferential direction, their front sides reaching at most the plane 13 and passing into the associated boundary 14, 15 via a recessed corner.
  • a cylindrical circumferential surface adjoining the boundary 16 to the rear forms the centering member for the outer ring circumference of the emitter 21 over the entire circumference and is penetrated by its connecting ends or the associated grooves.
  • the links 38 can also be used for the installation of the inner or concave ring circumference of the respective emitter 20 may be provided and diametrically opposite the associated member 38 for the outer ring circumference.
  • the number of centering members 38 provided for the same longitudinal or ring side of emitter 20 is here greater than the number of securing members 37, namely twice as large.
  • the additional centering members 38 which are not covered by securing members 37, each lie approximately in the middle between the adjacent securing member 37 and the associated connecting ends 26. Furthermore, the centering members 38 are completely set back towards the level of the securing members 37.
  • the securing members 37 which can also be attached by piercing or piercing after the edge 4 or 5 has been produced, penetrate both delimitations 15, 16 of the edge 5 and are attached to the edge 4 in the manner described.
  • a reinforcement 40 as described with reference to FIG. 1, is also arranged in the edge 5, which, together with the reinforcement 40 of the edge 4 and the links 37 or the holding sections 48, forms a preassembled structural unit, the holding sections 48 of which in the manner described during manufacture can also be embedded in the margin 5.
  • the two edges 4, 5 can be produced simultaneously or in succession and connected to this unit and then belong to the assembly unit mentioned.
  • the assembly unit consisting of wire or the like also includes fastening members, such as U-shaped brackets, the transverse webs of which rest on both sides of the reinforcement 40 of the edge 5 on the side of the legs of the holding section 48 facing the plane 32 and whose U-legs rest on the end face 28 of the edge 5 are accessible or protrude from this end face.
  • the legs of the brackets 47 form parallel protruding lancing tips parallel to the axis 10, which tips when placed of the edge 4, 5 are inserted into the base 3 and thereby secure the assembly unit mentioned without friction against the plate 30 relative to the base 3. All other areas of the fastening clips 47 are completely embedded in the edge 5.
  • the securing limbs of the securing member 37 continuously bridge the heating field 11 or the annular space between the delimitations 14, 15 and project beyond the delimitation 16 as explained with reference to the delimitation 14 according to FIG. 1. You do not enforce the centering members 38.
  • the reinforcement 40 of the edge 5 is also firmly connected to the associated holding section 48 in the manner described here. All mentioned sections of the securing member 37 lie in a common plane. 3, the sensor 9 passes through the edge 4 or 5 at opposite points, so that its free end can also pass through the edge 42. The sensor 9 is angularly offset with respect to the links 37, 38, but with respect to the adjacent link 37, 38 by an angle several times smaller than the arc distance between adjacent links 37, 38. The sensor 9 lies between the reinforcement 40 and the plane 32, see above that he can also cross the reinforcements 40 in front view.
  • the legs 39 of the respective securing member 37 are integrally connected to one another at their ends facing the axis 10, in the case of the embodiments according to FIGS. 6 to 8 and 11 their ends are facing away from the axis 10.
  • the respective securing member 37 forms a prefabricated assembly unit only with the edge 5, but not with the edge 4, which has no reinforcement 40 and in which the securing member 37 does not engage, but ends at a distance from its boundary 14. 6, however, the edge 4 have a reinforcement 40 for themselves and form a prefabricated assembly unit with this.
  • the securing member 37 also engages in the edge 4 with a holding section 48 containing the U-cross bar, but without this having a reinforcement 40. 11, a reinforcement 40 is also provided in the edge 4, to which the holding section 48 is fastened directly adjacent to the U-cross bar.
  • a single securing member 37 thus serves to hold down two or all of the emitters 20, 22 in the area of the contact points 41.
  • the inner circumference of the emitter 21 can also form the bottom 3 centering members 38 of the type described.
  • the base surface 27 is adjoined by an acute or obtuse angle or 90 ° conical, convex outer circumference as a boundary 17, which in the manner described can have the centering members 38 as projections which extend over the associated envelope surface 19 of this boundary 17 and / or that zone protrude from the bottom surface of the bottom 3, which lies in the area of the emitter 20 or 21.
  • a securing member 37 and an associated centering member 38 are each formed in one piece with one another and with the associated edge 4, with four such arrangements, for example, being able to be provided evenly distributed over the circumference, or a securing and centering member 37, 38 in Area lies between the connection ends 26.
  • Each of these links 37, 38 forms a radially web-like projection projecting beyond the boundary 14, which, with its radially inner end, connects to a base plate 49 in a load-bearing manner and can be formed in one piece therewith.
  • This base plate 49 completely covers the radially inner central zone of the base 3 with a thermally insulating gap distance and forms the base surface 27 lying approximately in the plane 13.
  • the projection or end face 28 is penetrated by a transverse groove, the bottom surface of which forms the securing element 37, while both groove flanks 38 form the centering element 38.
  • the back of the base plate 49 lies approximately in the plane of the end face 28, which, like this back, is set back from the plane 13.
  • the bottom surface 27 can also be offset from the plane 13 by less than half the axial extent of the emitter 20.
  • the base plate 49 is circular about the axis 10 and the projections 37, 38 are elongated in the radial direction in the manner of plates transverse to the plane 13 or 32, so that their front edge surfaces lie approximately continuously in the plane 32. Only the inner ends of these projections 37, 38 connect to the plate 27, which they can carry freely suspended, possibly with individual, punctiform supports relative to the floor 3.
  • the securing member 37 according to FIGS. 12 and 13 is fastened to the outside of the edge 42 with a partially annular holding section 48 on a plug-in tab which is bent out of the edge 42 and engages in the interior of the holding section 48.
  • This lies flat against the edge 42 and is angled at an acute angle to the legs 39, which penetrate narrowly defined openings in the edge 42 and diverge at an acute angle to their free ends.
  • the legs 39 converge at an acute angle with the plane 13 to the axis 10, so that the contact point 41 is not offset according to FIGS. 1 to 11 at the circumferential zone of the emitter 20 closest to the plane 32, but rather slightly laterally to the axis 10 of the emitter 20 is.
  • the wire of the link 37 is polygonal in cross-section, in particular elongated rectangular, the greatest cross-sectional extent being transverse to the plane 13, 32.
  • the member 37 which is only two-legally angular in axial section, is supported loosely and at a distance from and between the holding section 48 and the emitter 21 relative to the base body 2, in particular the bottom surface 27.
  • the legs 39 which are otherwise spaced from the floor 3, have correspondingly bent-out, U-shaped longitudinal sections, the U legs of which simultaneously serve as centering members 38 for the emitter 21.
  • the legs 38 form curved centering members 38 corresponding to the transverse groove according to FIG. 10.
  • the holding section 48 is U-shaped in the axial section, one U-leg forming the members 37, 38 and the other in one of the Bottom surface 27 engages opposite surface of the bottom 3 between this and the bottom 43. This surface is formed by a pocket-shaped depression on the back of the bottom 3.
  • the also two-legged U-crosspiece is inserted snugly between the outer circumference of the bottom 3 and the inner circumference of the edge 42, so that the link 37 is secured almost without play both parallel and at right angles to the axis 10 and by radially inserting it into a preassembled unit with the bottom 3 can be connected.
  • the front U-leg can penetrate the offset base edge in an area set back relative to the end face 28, e.g. in the area of a groove or a bore-like through opening.
  • the 17 belongs to the base body 2 or to one of the insulating bodies, such as the base 3, a further component 7 made of one of the insulating materials mentioned, which differs from that of the base material, in particular is firmer.
  • the component 7 can be a prefabricated and then embedded in the manufacture of the base 3 with this be formed tightly adherent body, which extends only approximately over the arc angle explained with the aid of the link 38 and extends to at least one of the end faces of the base 3 or penetrates it. Gradation or changing width of the outer circumference results in an axial positive locking of the component 7, in particular against movements in the direction 34.
  • the part 7 can protrude slightly beyond the front bottom surface and thus serve as an abutment for the rear end face of the emitter 20, which thereby the remaining front floor surface is kept in contact-free distance.
  • the part 7 forms a securing support for the link 37 which, as in the case of the embodiments according to FIGS. 1 to 8 and 11, is produced without play in the manufacture of the support 7 by pouring in against movements in all directions with the support 7 and after the production of the Soil 3 is connected to this.
  • the longer leg of the angular member 37 protrudes over the front end face of the polygonal and / or circular support 7 in axial view and can then be bent to form the fuse against the axis 10 around the outer circumference of the emitter 20 over more than 90 °.
  • the emitter 20 can also be released again by bending back, as is also possible with a resilient design according to FIGS. 1 to 8 and 12 to 16 without permanent deformation of the link 37 or 38.
  • the carrier 7 consists in particular of compressed expanded mica. It can also be inserted from the rear side into a correspondingly prefabricated or stepped bottom opening in a stop-limited manner and thus be assembled after the manufacture of the base 3. By contacting the floor 43, the carrier 7 is then positively secured relative to the floor 3.
  • the holding section 48 passes through the opening 50, which is elongated in the direction of the axis 10, to the largest Partly contact-free and by positioning its rear end, which is angled transversely to the axis 10, the link 37 is secured against movement in the direction 34.
  • the elongated hole 50 is so large that the entire link 37, 48 can be pre-bent and then inserted from the rear bottom side.
  • the link 37 is curved and lies with the convex side of the curvature on the emitter 20.
  • the holding section 48 could also penetrate the bottom 43 and, instead of lying almost without play between the bottoms 3, 43, lie against the outside of the bottom 43, for example with a crossed end of the holding section 48.
  • the opening 50 remains open and is covered by the bottom 43.
  • the emitter 20 has one or more projections 51 which protrude radially over the outer circumference of the housing 23 and which are formed in one piece with the housing 23 and are in particular tubular or nipple-shaped with an outer width which is substantially smaller than that of the housing 23.
  • the projection 51 the interior of which is connected to the interior of the housing 23 and which is pressure-tightly closed at the free end by fusion or the like, can serve to evacuate the housing 23 and fill it with protective gas during the manufacture of the emitter 20.
  • protruding projection 51 engages in an or the opening 50 of the bottom 3 that it acts as a centering member, as explained with the aid of the members 38, and also positively secures against rotational movements about the axis 10 .
  • the two securing legs 39 of the link 37 which are formed in one piece with one another, lie at an arc distance of more than 45 ° and less than 90 ° from one another about the axis 10.
  • the securing legs penetrate openings or grooves in the front end face of the outer, offset Ring edge step of the bottom 3 or the edge 4.
  • the transverse web of the holding section can lie sunk in corresponding openings in the outer circumference of the bottom 3 or the edge 4, while its rear leg according to FIG. 15 in a recess on the back of the bottom 3 or the edge 4 may lie.
  • This leg or another section of the securing component can also form the spacer according to FIG. 17 which bears against the back of the emitter 20 and which then consists of metal or wire.
  • the reinforcement 40 or the like is arranged in accordance with FIG. 20 completely embedded in the bottom 3 in the manner described and lies in an axial view with a radial distance from the boundary 14 and from the adjacent ring circumference of the emitter 20.
  • the reinforcement 40 can be used to solidify the holding section of the securing member 37 serve.
  • the rear leg of the holding section 48 is V-shaped in an axial view with legs diverging away from the axis 10, which pass into the crosspiece and then into the securing leg 39.
  • the holding section 48 is curved in an axial view around the axis 10 and it lies closely against the inside of the edge 42 and against the outer circumference of the edge 4.
  • the sheet metal tabs for fixing the position of the holding section 48 are not bent outwards as in FIG. 12, but inwards from the edge 42 against the bottom 43, so that the holding section 48 can be positively connected to them by insertion in the direction 34.
  • the securing and centering members 37, 38 protrude freely from the holding section 48, similar to FIG. 14.
  • only a single component can be sufficient as a securing or centering element 37, 38, which is expediently diametrically opposite the connecting sections 26.
  • the securing and centering member 37, 38 is formed in one piece with the edge 4 in accordance with FIGS. 9 and 10, but without the bottom disk 49 being provided.
  • the hold-down and centering surface 37 of the projection 38 extends about the longitudinal axis of the outer circumference of the emitter 20 not according to FIG. 10 over more than 180 °, but over less than 90 °, so that the peripheral zone of the emitter closest to the plane 32 20 remains exposed.
  • the edge 4 can consist transversely and / or parallel to the axis 10 of two or more closely adjacent edge or ring layers made of different insulation materials.
  • the edge 4 forming the projections 38 expediently consists of a mixture of the aforementioned expanded mica and the aforementioned fiber felt melange and / or the non-fibrous, pourable insulating material, each of the remaining insulating components also being made of such a material, possibly in different ways Mixing ratio, can exist.
  • an annular disc-shaped edge part 6, which is substantially thinner than this, is formed, which forms the end face 29 and is made of an insulating material that is firmer than the edge 4, e.g. Expanded mica, fiber felt or the like.
  • the link 37 or 38 can also form a preassembled structural unit with the sensor 9 or its outer tube and / or can be formed in one piece with this outer tube.
  • the outer circumference of the outer tube lies at the contact point 41 or on two sides of the axis 10 lying contact points 41 on the emitter 20 and thereby secures it against lifting off the floor 3.
  • At the side of the sensor tube at least one clip 47 is fastened, the clip legs or pricking tips of which lie transversely to the plane 13 and can be pierced into the bottom 3.
  • At least one bracket leg forms the centering member 38, which can lie tangentially or point-like on the inner and / or outer ring circumference of the emitter 20.
  • the projection 51 can also be used for centering, so that a clamp 47 is not absolutely necessary.
  • the clamp 47 is permanently attached to the weldable sensor tube with welds.
  • brackets 47 are separate and are provided at an arc distance from the sensor 9.
  • a bracket 47 is located on the rear end of the emitter 20 and thus serves to keep the emitter 20 at a distance from the bottom 3.
  • the other bracket 47 surrounds the emitter 20 closely at the front half of its housing circumference, so that it is independent of the sensor 9 for centering and serving down.
  • the difference between the thermal expansion coefficient of the two sensor rods is expediently smaller than in the other areas, or no such difference is provided, so that in the area of the contact point 41 due to the heat transfer from the emitter 20 to sensor 9 whose switching point is not falsified.
  • the temperature-compensated longitudinal section can extend to the free end of the sensor 9 and e.g. be formed in that the area of the inner rod consists of material of the same thermal expansion as the outer tube.
  • the securing or centering member 37 likewise forms a preassembled structural unit with the sensor 9, however, it is formed by a separate component, which forms a rod-shaped extension of the free end of the sensor.
  • This elongated securing member 37 which has approximately the same outer and / or inner cross-sections as the sensor 9 or its outer tube, is plugged with an open end onto the tapered, free end of the sensor 9 in an axially limited manner and thereby secured.
  • the sensor 9 is short here according to FIG. 1, so that it only extends over part of the width of the heating field 11.
  • the free end of the link 37 forming a rigid unit with the sensor 9 is supported or penetrates the edge 42, it serves to secure the position of the free sensor end without effectively influencing the sensor 9's sensor result by heat conduction. Only the link 37 abuts the contact point 41 on the emitter 20. On the other side of the axis 10, the outer tube of the sensor 9 can rest on a corresponding contact point. The free end of the overtube or member 37 can also be axially secured against being pulled off by the sensor 9 by means of a sheet metal tab of the edge 42. Furthermore, a link 38 or 47 can be provided on link 37 according to FIG. 27.
  • the securing member 37 which is bent from wire, has a U-shaped bent section 48 with straight legs and a straight transverse web.
  • the transverse web can stand on the raised shoulder between the recessed floor area and the edge 42 immediately adjacent to it, or can be at a distance above it.
  • the legs and / or the crossbar of the holding section can rest directly on the inside and / or the outside of the edge 42.
  • This edge 42 is firmly connected to tab-shaped fixing parts 52, which here are formed in one piece with the edge as tabs or the like and have the same material thickness as the edge 42.
  • each tab 52 On both sides of each tab 52, this is laterally separated from the remaining edge 42 by two flanking slots 54, 55 separated so that their front or upper end projects freely and only the other end connects to the edge 42 as a connecting foot.
  • a slot 54 forms an angled intermediate section, and the other slot 55, in particular the slot facing the second tab 52, is straight.
  • the base of each tab 52 forms a predetermined bending point 56 due to cross-sectional weakening, for example through a hole passing through it, so that the tab 52 is bent only at this one point when bending against the axis 10 and otherwise remains essentially rectilinear.
  • the tabs 52 are angled approximately at a rightward angle so that they rest resiliently on the upper sides of the legs 39, possibly under tension that, if necessary, the crossbar of the holding section 48 is also pressed under tension against the floor or its shoulder.
  • the securing member 37 or its holding section 48 can thus be held without play parallel to the axis 10.
  • the emitter 20 or 21 can also be inserted after or before, so that it is fixed in its final position by the hold-down links 52 and the centering links 38 before the heater is finally assembled.
  • the free ends of the securing members 52 do not extend as far as the centering members 38 or the emitter 20, but are at a distance from this.
  • Your foot or bending zones 56 are at a distance from the transverse web of the holding section 48, which corresponds approximately to the length of its legs. Otherwise, this configuration corresponds essentially to the embodiments according to FIGS. 12 to 16 and 20 to 23.
  • Each of the safety points mentioned can optionally be provided on an outer or an inner emitter 20 or 21. All of the described features and types of securing or centering members 37, 38 can be provided only once or several times apart in each embodiment. According to FIG. 33, this is the case in which a plurality of securing or centering points are entered.
  • the point 101 is according to FIGS. 1 and 2, the point 103 according to FIGS. 3 and 4, the point 106 according to FIGS. 6 and 7, the point 108 according to FIGS. 8 and 11, the point 109 according to FIGS 10, the position 112 according to FIGS. 12 and 13, the position 114 according to FIG. 14, the position 115 according to FIGS. 15 and 16, the position 117 according to FIG. 17, the position 118 according to FIGS.
  • FIG. 7 is preferably provided, the centering of the edge 5 relative to the rest of the base body or the base 3 in addition to the clamp 47 or instead also being formed directly by the link 37, which e.g. for centering on the boundary 14 of the edge 4 and can be rigidly connected to the edge 5 parallel to the plane 13.
  • a heater 1a can also have a plurality of separately switchable heating or cooking points according to FIG. 34, the components 3 to 7 and 9 including the associated securing and centering means 35, 36 being assembled into separate units. Two to all of these units can each be centered on a common support 8a and thus combined to form an assembly unit which is to be mounted on the plate 30 is. 1 and 2, the unit 203 according to FIGS. 3 and 4, the unit 206 according to FIGS. 6 and 7, the unit 208 according to FIGS. 8 and 11, the unit 209 according to the figures 9 and 10, the unit 212 according to FIGS. 12 and 13, the unit 214 according to FIG. 14, the unit 215 according to FIGS. 15 and 16, the unit 217 according to FIG.
  • the units 209, 220 and 226 form elongated or oval heating fields 11, 12, one of which extends approximately centrically symmetrically with respect to the axis 10, while the smaller heating field immediately adjacent to the annularly closed edge 4 is delimited by this edge 4 in the shape of a crescent moon.
  • This smaller heating field then has a U-shaped outer edge at its edge 4.
  • the heating section of the smaller heating field is correspondingly U-shaped, but is held down or centered in one of the described ways.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
EP96116962A 1995-10-27 1996-10-23 Elément de chauffage radiant Withdrawn EP0771134A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995140004 DE19540004A1 (de) 1995-10-27 1995-10-27 Strahlungs-Heizer
DE19540004 1995-10-27

Publications (2)

Publication Number Publication Date
EP0771134A2 true EP0771134A2 (fr) 1997-05-02
EP0771134A3 EP0771134A3 (fr) 1997-11-19

Family

ID=7775915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116962A Withdrawn EP0771134A3 (fr) 1995-10-27 1996-10-23 Elément de chauffage radiant

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EP (1) EP0771134A3 (fr)
DE (1) DE19540004A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1003352A2 (fr) * 1998-11-20 2000-05-24 E.G.O. Elektro-Gerätebau GmbH Eléments de chauffage électrique rayonnants et son procédé de fabrication
DE19942967A1 (de) * 1999-09-09 2001-03-15 Ego Elektro Geraetebau Gmbh Strahlheizkörper
GB2372190A (en) * 2000-12-16 2002-08-14 Ceramaspeed Ltd Temperature sensor restraint means for radiant electric heater
EP2272302A2 (fr) * 2008-03-17 2011-01-12 Lg Electronics Inc. Support pour élément chauffant et table de cuisson électrique comprenant un tel support

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19825309A1 (de) * 1998-06-05 1999-12-09 Bsh Bosch Siemens Hausgeraete Strahlungsheizungsanordnung mit Stromschienen
DE10018816A1 (de) * 2000-04-15 2001-10-31 Ego Elektro Geraetebau Gmbh Strahlungsheizkörper, insbesondere für ein Glaskeramik-Kochfeld
DE102013207831A1 (de) * 2013-04-29 2014-06-18 E.G.O. Elektro-Gerätebau GmbH Strahlungsheizeinrichtung für ein Kochgerät und Kochgerät
CN105240878B (zh) * 2015-10-16 2018-10-02 阳江市韦邦电器有限公司 一种新型铸铁电炉盘

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820139A1 (de) * 1978-05-09 1979-11-15 Karl Fischer Elektrischer heizkoerper
DE68923181T2 (de) * 1988-05-27 1995-10-26 Ceramaspeed Ltd Elektrische Strahlungsheizgeräte.
DE3904177A1 (de) * 1989-02-11 1990-08-16 Ego Elektro Blanc & Fischer Elektrischer strahlheizkoerper
GB9202036D0 (en) * 1992-01-30 1992-03-18 Redring Electric Ltd A heating unit for a hob
GB2275162B (en) * 1993-02-11 1996-04-10 Ceramaspeed Ltd Radiant electric heater method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1003352A2 (fr) * 1998-11-20 2000-05-24 E.G.O. Elektro-Gerätebau GmbH Eléments de chauffage électrique rayonnants et son procédé de fabrication
EP1003352A3 (fr) * 1998-11-20 2001-03-14 E.G.O. Elektro-Gerätebau GmbH Eléments de chauffage électrique rayonnants et son procédé de fabrication
DE19942967A1 (de) * 1999-09-09 2001-03-15 Ego Elektro Geraetebau Gmbh Strahlheizkörper
GB2372190A (en) * 2000-12-16 2002-08-14 Ceramaspeed Ltd Temperature sensor restraint means for radiant electric heater
US6603100B2 (en) 2000-12-16 2003-08-05 Ceramaspeed Limited Radiant electric heater
GB2372190B (en) * 2000-12-16 2005-02-09 Ceramaspeed Ltd Cooking appliance with radiant electric heater
EP2272302A2 (fr) * 2008-03-17 2011-01-12 Lg Electronics Inc. Support pour élément chauffant et table de cuisson électrique comprenant un tel support
EP2272302A4 (fr) * 2008-03-17 2013-10-16 Lg Electronics Inc Support pour élément chauffant et table de cuisson électrique comprenant un tel support
US8735780B2 (en) 2008-03-17 2014-05-27 Lg Electronics Inc. Heater supporter and electric hob including the same

Also Published As

Publication number Publication date
DE19540004A1 (de) 1997-04-30
EP0771134A3 (fr) 1997-11-19

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