EP0630169A2 - Dispositif pour connexions électriques et éléments associés - Google Patents

Dispositif pour connexions électriques et éléments associés Download PDF

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Publication number
EP0630169A2
EP0630169A2 EP94250154A EP94250154A EP0630169A2 EP 0630169 A2 EP0630169 A2 EP 0630169A2 EP 94250154 A EP94250154 A EP 94250154A EP 94250154 A EP94250154 A EP 94250154A EP 0630169 A2 EP0630169 A2 EP 0630169A2
Authority
EP
European Patent Office
Prior art keywords
insulating body
insulating
legs
heating coils
heating coil
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Withdrawn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
EP94250154A
Other languages
German (de)
English (en)
Other versions
EP0630169A3 (fr
Inventor
Wolfgang Gülow
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.)
ELEKTROWAERME BELZIG GMBH
Original Assignee
Elektrowarme Belzig 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 Elektrowarme Belzig GmbH filed Critical Elektrowarme Belzig GmbH
Publication of EP0630169A2 publication Critical patent/EP0630169A2/fr
Publication of EP0630169A3 publication Critical patent/EP0630169A3/xx
Withdrawn legal-status Critical Current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
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the invention relates to arrangements of electrical connecting elements between different heating coils and / or one or more connecting blocks as well as electrically conductive connecting elements and elements for receiving and locking these electrically conductive connecting elements for radiant heaters.
  • DE 21 65 569 shows a heating element with a wire bridge running from the inside to the connector
  • DE 23 39 768 mentions a line leading to the power source, which is centered through a protective cover made of electrically and thermally insulating material through the bottom of the radiant heating element leads below and, at the passage through the floor additionally having a sleeve, is braided together with one or more connecting wires.
  • insulated connecting wires for the heating coils are led out laterally below the level of the heating coils through a recess between the enveloping sheet metal parts.
  • DE 27 59 941 Electrical lines encased with ceramic insulating sleeves are described in DE 27 59 941, one of which is guided practically horizontally from the center of the electrical heating element in an open channel in the surface of the insulating layer and the other through holes in the edge and the metal pan to the clamp.
  • DE 33 15 438 presents heating coils with connections which have separately fastened, angularly bent sheet metal parts both in the central region of the annular heating zone and in the outer region, which in turn are inserted through a disc-shaped insulating support and welded to connecting lines.
  • connection connections also allow only a limited selection of arrangements of the heating coils and require additional material expenditure for insulating material.
  • additional arrests of these are necessary, for example, to be able to weld onto the connection body.
  • the invention has for its object to propose arrangements of electrical connecting elements that do not have the disadvantages mentioned and are suitable according to the intended use, to connect different heating coils with one another and / or with one or more connecting blocks of radiant heaters with electrical connections by means of electrically conductive connecting elements to be proposed as well as elements To propose that serve to accommodate, lock and isolate the aforementioned electrical connectors.
  • the above object for arrangements of electrical connections and elements therefor, according to the type mentioned at the outset, is achieved in that with the manufacture of the insulating body, in this and / or between a plurality of insulating bodies and / or between Insulating bodies and form-fitting covering insulating pieces and / or in receptacles which are specially designed for line connections in insulating bodies are arranged in specially shaped electrical connections.
  • the heating coil carrier also known as the heating coil carrier, which is known to consist of a microporous insulating material with high thermal and electrical insulation, in any case during its manufacture, if it still has a powdery, pulpy or pasty consistency depending on the basic material used has an imaginable or malleable consistency, via magazine devices arranged in the molding tool, electrical conductor connections without an insulating sleeve, preferably specially angled round wires, pressed into the still plastic insulating material and the pressure points and / or the temperature of the molding tool seal the indentation points of the pressed-in conductor connections.
  • the conductor connections are arranged essentially parallel and at a sufficient distance from the level of the heating coils in such a way that the legs of the conductor connections bent at a right angle at the ends of the heating coils to which the conductor connecting legs are to be connected are bent at a right angle towards the heating coil laying plane step out of the surface of the insulator.
  • the leg ends protruding approximately perpendicularly from the laying or embedding plane of the heating coils are connected to the conductor connections, for example by resistance spot welding.
  • a preferred embodiment of the arrangement according to the invention is that the legs of the conductor connections are pressed through the cured or dried insulating body.
  • special stencils are inserted into the mold for the manufacture of the insulating body, which mark the points on the side of the insulating body facing away from the heating coil laying plane or form insertion openings and / or insertion grooves into which, after drying or Hardening of the insulating body, the conductor connections and their legs are pressed in.
  • the depth of the mold openings is such that there is only a relatively thin material thickness upwards towards the heating coil laying plane, through which the leg ends are pressed. This ensures a relatively tight fit of the conductor connections and their legs in the insulating body during assembly.
  • This described embodiment is particularly suitable for radiant heaters which still have a non-electrically conductive insulating layer or a so-called insulating plate underneath the insulating body.
  • the insertion grooves for the conductor connections are formed sufficiently deep so that no electrical connection to the sheet metal bowl surrounding the insulating body can occur.
  • the insertion grooves are subsequently cemented after insertion of the line connections or sealed using the immersion method or with molded articles.
  • the insulators have completely new features in that they not only accommodate the heating coils on the upper level, but also serve to define the introduction, reception and fastening of cable connections and special shapes after inserting the cable connections due to special shapes on the side facing away from the heating coil installation level be closed with custom-fit molded bodies made of thermal and electrical insulating material.
  • the invention also relates to various line connections which, depending on the intended application, have one or more legs, at the ends of which the heating coil ends are welded for final assembly.
  • the line connections are provided with turns and bulges in the longitudinal direction approximately parallel to the heating coil laying plane, in order to prevent the line connections from tilting.
  • line connections with only one up the legs reaching the heating coils are the subject of the invention.
  • the other end of the line connection, which does not run in an upward leading leg, is arranged in such a way that it is guided in a defined manner to the edge or ring of the radiant heater and is connected there directly to, for example, the rod expansion regulator.
  • the line connection is arranged so that the end of the line connection leading to the periphery leads through a slot in the sheet metal bowl.
  • connecting bridges 2 made of specially angled and shaped bare round wire or alternatively stamped parts are used as special line connections.
  • a simple line connection as a two-leg connection bridge 2 is shown in FIG. 3.
  • two legs 4 have different variants of connecting bridges 2 , which have turns, bends, bulges at their center piece between the legs 4 , which give the insulating body 1 of the connecting bridge 2 a higher stability during the manufacturing process and prevent tilting.
  • a special connecting bridge 2 with two legs 4 is shown in FIG. 9. This connecting bridge 2 has two legs 4 angled essentially at right angles to the intermediate pieces and runs into a switching wire or connection 6 .
  • the connection 6 (Fig.
  • the one-, two- or multi-legged connecting bridges 2 are shaped in accordance with the arrangement of the ends of the heating coils 8 or the arrangement of the flags of connecting stones or temperature regulators of the radiant heaters in such a way that the legs 4 after insertion into the insulating body 1 or between two insulating bodies 1 the connecting bridges 2 are each to be assigned to the corresponding ends of the heating coils 8 and project from the insulating body 1 in the direction of the heating coil laying plane for connection to the heating coils 8 .
  • the length of the legs 4 is to be dimensioned such that a perfect contact with the ends of the heating coils 8 is possible.
  • the protruding ends of the legs 4 correspond approximately to the diameter of the heating coil 8 .
  • the legs 4 with which jumper wires 6 (Fig. 2.8) are connected or which lead to connections 6 (Fig. 1, 2, 7, 9, 11), are to be chosen longer or shorter or specially shaped, depending on the type of connection used . If the ends of the heating coils 8 lead in a radiant heater with a special heating coil arrangement, for example all to the periphery of the insulating body 1 , connecting bridges 2 are used, as shown in FIG. 7.
  • connecting bridges 2 Since the production of the connecting bridges 2 from bare round wire with more than two legs 4 require several bending processes, stamped parts are expediently used, which receive the corresponding legs 4 and connections 6 in one piece and, if necessary, are deformed transversely to the axis of the legs 4 .
  • insulating bodies 1 are produced from a microporous insulating material with high thermal and electrical insulation. Depending on the starting material used, it has a powdery, pulpy or pasty consistency. Is this Input raw material into a mold (not shown), one or more connecting bridges 2 are pressed into the raw material without any insulating sleeve, for example via magazine devices (not shown) located in a stamp, and by pressure and / or temperature with the finishing process (curing) in the insulating body 1 arranged fixed. Link bridges 2 as described in Example 1 are used for this.
  • FIG. 2 shows a top view of two variants of the arrangement of connecting bridges 2 .
  • the upper connecting bridge 2 one with two legs 4 and two leg ends 5 and a connection 6 is shown.
  • the lower connecting bridge 2 has three legs 4 with three leg ends 5, wherein the are at the center of the radiant heater arranged pair of end legs 5, for example by resistance spot welding to the two ends of the inner heating coils 8 are connected.
  • the arrangement of the connecting bridges 2 in the insulating body 1 is defined during its manufacture so that the intermediate piece of the connecting bridge 2 running between the legs 4 is arranged approximately parallel to the heating coil laying plane and essentially at equal intervals - i.e. approximately in the middle - between the heating coil laying plane and the underside of the insulating body 1 is.
  • the legs 4 protrude approximately in a length corresponding to the diameter of a heating coil 8 from the heating coil laying plane at the future end points of heating coils 8 , with their leg ends 5 and ends of the heating coils 8 in the course of further assembly to be connected.
  • Fig. 8 shows an embodiment of a connecting bridge 2 , which was locked during the manufacture of the insulating body 1 on the bottom of the lower mold and thus after completion of the insulating body 1 which is approximately parallel to Intermediate pieces of the connecting bridge 2 running on the heating coil laying plane are visible on the underside of the insulating body 1 .
  • Such an arrangement of the connecting bridge 2 is provided for radiant heaters which also have an insulating plate 9 under the insulating body 1 .
  • the connecting bridge 2 shown in FIG. 8 embedded in the insulating body 1 during its manufacture has two legs 4 for contacting heating coils 8 and one leg 4 for contacting with a switching wire 6 .
  • FIG. 9 represents an alternative to FIG. 8.
  • a radiant heater also consists of an insulating plate 9 and an insulating body 1 , in which a connecting bridge 2 with legs 4 is arranged. A section of the connecting bridge 2 that runs parallel to the heating coil laying plane to the periphery of the radiant heater merges into a connection 6 , which is guided through a slot in the sheet metal bowl 3 during assembly.
  • insulating bodies 1 with markings already formed on the side facing away from the heating coil laying plane for the production of the same for pushing legs 4 through the insulating body 1 is within the scope of the invention and represents a special feature.
  • Insertion openings 10 which open into funnel-shaped blind holes 11 , are shaped.
  • a special embodiment provides for the connecting bridges 2 to be arranged in insert grooves 13 formed during the manufacture of the insulating body 1 by means of templates so that the legs 4 are inserted into the blind holes 11 and the parts of the connecting bridges 2 which run approximately parallel to the heating coil laying plane between the legs 4 are inserted in the insert grooves 13 are pushed in.
  • the insertion grooves 13 are only about to mold the thickness of the round wire of the connecting bridges 2 correspondingly low, since, as described in Example 4, located below the insulating body 1 Isolated creator 9 takes over the electrical insulation with respect to the tin cup. 3
  • only one insulating body 1 is to be used without an insulating plate 9 to be arranged underneath.
  • the insertion grooves 13 are deeper as shown in FIG. 10, preferably about 5mm formed, then cemented or after the pressing of the connecting bridges 2 with an electrically and thermally insulating material sealed with such a material in a dipping process.
  • the shaped bodies 14 have a strip-like, segment-like, sector-like shape.
  • the insertion groove 13 is provided as a continuous groove for special arrangements of the connecting bridges 2 up to the periphery of the insulating body 1 .
  • the molded bodies 14 are designed accordingly. In order to ensure that the molded bodies 14 are securely held in the insertion grooves 13 during the assembly process, the insertion grooves 13 and molded bodies 14 are to be provided with positive elevations and depressions.
  • FIG. 11 shows an arrangement in which one end of a connecting bridge 2 does not end in a leg 4 , but in a molded connection 6 leading out of the radiant heater.
  • the sheet metal bowl 3 is slotted to lead out the molded contact wire 6 at a corresponding point on its vertical wall.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
EP94250154A 1993-06-18 1994-06-15 Dispositif pour connexions électriques et éléments associés Withdrawn EP0630169A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934320214 DE4320214A1 (de) 1993-06-18 1993-06-18 Anordnungen elektrischer Verbindungen und Elemente hierfür
DE4320214 1993-06-18

Publications (2)

Publication Number Publication Date
EP0630169A2 true EP0630169A2 (fr) 1994-12-21
EP0630169A3 EP0630169A3 (fr) 1995-01-11

Family

ID=6490624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250154A Withdrawn EP0630169A2 (fr) 1993-06-18 1994-06-15 Dispositif pour connexions électriques et éléments associés

Country Status (2)

Country Link
EP (1) EP0630169A2 (fr)
DE (1) DE4320214A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336087A (en) * 1998-04-01 1999-10-06 Ceramaspeed Ltd Base for an electric heater having a U-shaped connection link providing electrical connection of the element and corresponding method of manufacture.

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506005A1 (de) * 1995-02-21 1996-08-22 Belzig Elektrowaerme Gmbh Strahlungsheizkörper
DE19527825A1 (de) * 1995-07-29 1997-01-30 Ego Elektro Blanc & Fischer Strahlungs-Kochstelleneinheit
DE19527823A1 (de) * 1995-07-29 1997-01-30 Ego Elektro Blanc & Fischer Kochmuldeneinheit mit mehreren unterhalb einer Platte angeordneten Kochstellen
DE19527826C2 (de) * 1995-07-29 2002-05-08 Ego Elektro Geraetebau Gmbh Strahlungs-Kochstelleneinheit
DE19527824A1 (de) * 1995-07-29 1997-01-30 Ego Elektro Blanc & Fischer Kochmuldeneinheit mit mehreren unterhalb einer Platte angeordneten Kochstellen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124778A1 (fr) * 1983-04-28 1984-11-14 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque électrique de cuisinière ou plaque chauffante
EP0303854A1 (fr) * 1987-08-18 1989-02-22 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur électrique
DE3914990A1 (de) * 1989-05-06 1990-11-08 Ako Werke Gmbh & Co Strahlungsheizeinrichtung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2165569C3 (de) * 1971-12-30 1986-05-28 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektrokochgerät mit einer oberen Platte aus hochwärmebeständigem glasartigem bzw. keramischem Material
GB1433478A (en) * 1972-08-05 1976-04-28 Mcwilliams J A Electrical heating apparatus
DE2729930C2 (de) * 1977-07-02 1993-02-18 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Verfahren zur Herstellung eines elektrischen Strahlungs-Heizelementes
GB1579729A (en) * 1976-09-30 1980-11-26 Micropore International Ltd Electrical heating units
DE2729929C3 (de) * 1977-07-02 1981-10-08 Karl 7519 Oberderdingen Fischer Strahlungs-Heizeinheit für Glaskeramik-Elektrokochgeräte
DE3227623C1 (de) * 1982-07-23 1983-10-27 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Anschlußeinrichtung für einen, vorzugsweise perlenisolierten Strahlungsheizkörper, insbesondere für eine Backofenheizung
DE3519350A1 (de) * 1985-05-30 1986-12-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Strahlungs-heizeinheit
DE3527413A1 (de) * 1985-07-31 1987-02-12 Ego Elektro Blanc & Fischer Elektrischer strahlheizkoerper zur beheizung von heizflaechen sowie verfahren und vorrichtung zu seiner herstellung
DE3541839A1 (de) * 1985-11-27 1987-06-04 Ako Werke Gmbh & Co Strahlungsheizvorrichtung fuer kochplatten
DE4022292A1 (de) * 1990-07-15 1992-01-16 Ego Elektro Blanc & Fischer Elektrisches strahlungsheizelement
DE4122106A1 (de) * 1991-07-04 1993-01-07 Ako Werke Gmbh & Co Strahlungsheizvorrichtung fuer einen kochherd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124778A1 (fr) * 1983-04-28 1984-11-14 E.G.O. Elektro-Geräte Blanc u. Fischer Plaque électrique de cuisinière ou plaque chauffante
EP0303854A1 (fr) * 1987-08-18 1989-02-22 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur électrique
DE3914990A1 (de) * 1989-05-06 1990-11-08 Ako Werke Gmbh & Co Strahlungsheizeinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336087A (en) * 1998-04-01 1999-10-06 Ceramaspeed Ltd Base for an electric heater having a U-shaped connection link providing electrical connection of the element and corresponding method of manufacture.
GB2336087B (en) * 1998-04-01 2002-02-13 Ceramaspeed Ltd Base for an electric heater and method of manufacture

Also Published As

Publication number Publication date
DE4320214A1 (de) 1994-12-22
EP0630169A3 (fr) 1995-01-11

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