EP1049357A2 - Logement de réception possédant une couche isolante pour éléments chauffants radiants et procédé de fabrication de rainures dans la couche isolante - Google Patents

Logement de réception possédant une couche isolante pour éléments chauffants radiants et procédé de fabrication de rainures dans la couche isolante Download PDF

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Publication number
EP1049357A2
EP1049357A2 EP00108510A EP00108510A EP1049357A2 EP 1049357 A2 EP1049357 A2 EP 1049357A2 EP 00108510 A EP00108510 A EP 00108510A EP 00108510 A EP00108510 A EP 00108510A EP 1049357 A2 EP1049357 A2 EP 1049357A2
Authority
EP
European Patent Office
Prior art keywords
channels
insulating layer
receiving tray
tray according
holes
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Withdrawn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
EP00108510A
Other languages
German (de)
English (en)
Other versions
EP1049357A3 (fr
Inventor
Norbert Dipl.-Ing. Mörsch (FH)
Dieter Jaag
Rudi Brunner
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
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 Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP1049357A2 publication Critical patent/EP1049357A2/fr
Publication of EP1049357A3 publication Critical patent/EP1049357A3/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Withdrawn legal-status Critical Current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
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater

Definitions

  • the invention relates to a receptacle for at least a radiant heating element of a radiant heater, especially a stove, on the bottom of the Receiving cup an insulating layer is arranged.
  • the invention further relates to a method for Production of channels in such an insulating layer.
  • Such a receptacle is from DE 27 44 079 A1 and DE 28 06 367 A1.
  • the insulation layer consists mainly of pressed microporous Silica with opacifiers and fibers. The Insulating layer is in the mentioned writings described.
  • a holder DE 27 44 079 A1
  • a connection bushing DE 28 06 367 A1
  • the highly disperse silica of the insulating layer takes off Moisture.
  • the Radiant heating element evaporates the moisture in the Inside the insulating layer.
  • the resulting Vapor bubbles can cause the insulation layer to flake off lead what is undesirable.
  • EP 0 618 399 B1 describes a microporous one Thermal insulation molded body described in which to increase the Gas permeability channel pores are provided. These are made by pushing in pins. Becomes a such thermal insulation molded body in a conventional Receptacle inserted, then the channel pores are at the bottom closed. The one leaving the insulation layer upwards Steam hits the radiant heating element and one usually covering the top of the holder Glass ceramic plate. Both are undesirable.
  • the object of the invention is to provide a tray Propose the type mentioned, in which the gas or Steam discharge from the insulating layer and the Receiving tray is improved. It is also the task of Invention, a simple method of making a to specify such an insulating layer.
  • Another advantage of the method described is in that the channels are created in the same operation be in which the insulating layer is pressed. Compared to the prior art, in which the Insulating layer is pressed and then through the channels Needling is produced is described Procedure saved one operation.
  • the channels on the Radiant heating element associated surface of the Insulation layer closed. This ensures that the Turn on the radiant heater, i.e. at the Heat up, at most little gas or steam on the Radiant heating element and a holding tray on top final glass ceramic plate meets.
  • a receptacle 1 is made of sheet metal Pressed thermal insulation material and forms a Insulating layer 2.
  • a suitable as thermal insulation material Material based on disperse silica, if necessary with fibers and opacifiers. Such material is known from EP 0 618 399 B1 and DE 28 06 367 A1.
  • the insulating layer 2 borders directly on the bottom 1 ' the tray 1. Outside the center of the Bottom 1 'consist of several channels in the insulating layer 2 3. A channel can also be in the center of the bottom 1 ' be arranged.
  • the depth of channels 3 is complete approximately perpendicular to the floor 1 '.
  • the bottom 1 ' has open Holes 4 into which the channels 3 open.
  • the insulating layer 2 is in the center area 5 and Edge area 6 thicker than in intermediate areas 7.
  • the Edge area 6 and the central area 5 serve the Support of a not shown Radiant heating element, for example a heating foil.
  • a not shown Radiant heating element for example a heating foil.
  • the insulating layer 2 is not.
  • the holder 1 with radiant heating element is in the usual way to arrange a gas ceramic plate, not shown.
  • this can Radiant heating element as a spiral Heating coil in a known manner directly on the Insulating layer 2 may be arranged.
  • the channels 3 do not go through the insulating layer 2 through it. They are on the radiant heating element associated surface of the insulating layer 2 closed.
  • the channels 3 are essentially the same in FIG. 1 spaced. However, it is also possible to channel 3 in thinner intermediate area 5 less from each other spaced than in the thicker areas, i.e. in the Center area 5 and in the peripheral area 6. This is the Steam discharge in the thinner, stronger than the thicker Areas compressed intermediate area 7 supported.
  • the cross-sectional area of the channels is, for example, approximately 0 mm 2 to 30 mm 2 .
  • the cross-sectional area in the zone adjoining the base 1 ' is slightly smaller than the cross-sectional area of the holes 4.
  • the specified lower limit 0mm 2 relates to a conical shape (cf. FIGS. 3a, 3b), in which the cross-sectional area is 0 and above downwards, towards the receiving tray 1, expanded.
  • the channels 3 are roughened on the inside.
  • the inner surface of the channels 3 can be angular, star-shaped or wavy cross-section enlarge.
  • the channels 3 are essentially cylindrical. However, they can also be designed how this corresponds to the geometries according to FIG. 3.
  • the insulating layer 2 pressed into the receiving shell 1 has a tendency to moisture from the environment to record. Is the cradle 1 under the Glass ceramic plate mounted and will Radiant heating element switched on, then the evaporates Moisture inside the insulating layer 2 quickly. The forming gas bubbles enter the channels 3 and pull out through the open holes 4 without flaking occurs on the insulating layer. So that is the moisture essentially from the insulating layer 2 removed without the radiant heater and the Apply glass ceramic plate. Should the Insulating layer 2 moisture again in later operation record, then this is always when switching on the Radiant heating element through channels 3 and the open ones Holes 4 derived.
  • the channels 3 in the insulating layer 2 at the holes 4 can be produced according to Figure 2 as follows:
  • the receptacle 1 prefabricated with the holes 4 is used in a tool 8, which corresponds to the Receptacle 1 is cup-shaped.
  • arbors 9 are arranged which when inserting the Receiving tray 1 in the direction of arrow P through holes 4 of the bottom 1 'of the receiving shell 1 protrude.
  • the in the Receiving tray 1 depth of the mandrels 9 is so dimensioned that they the desired depth extension of the Channels 3 corresponds.
  • Each hole 4 does not have to have a mandrel 9 be assigned; however, each mandrel 9 must have a hole 4 be assigned.
  • the method described is not limited to that the insulating layer 2 directly into the receptacle 1 is pressed. It is also possible to use the insulating layer 2 into a shape corresponding to the receiving shell 1 press in and thereby create the channels. The so prefabricated by pressing and channel formation Insulating layer can then be at another work station into the receptacle 1 prepared with the holes 4 be used, with appropriate alignment it is achieved that the channels 3 at the open holes 4th flow out.
  • the mandrels 9 can have different geometries, whereby not all mandrels 9 have the same geometry have to.
  • Figure 3 are different geometries for the Arbors 9 shown.
  • the respective mandrel is according to FIG. 3a 9 conical with circular cylindrical cross section designed.
  • the mandrel 9 is pyramid-shaped designed with a rectangular cross-section.
  • the mandrel 9 cylindrical with a roughened tip Surface.
  • the mandrel 9 has one at the bottom larger cross section than being in the middle, being upper cross section in its dimensions between the Dimensions of the middle cross section and the bottom Cross-section lies.
  • the cross-section is star or cruciform.
  • the mandrel 9 is stepped cylindrical an upper frustoconical approach.
  • Figure 3f is a lower part of the mandrel 9 frustoconical, wherein this is followed by a cylindrical section, which is followed by a wavy star-shaped end section at the top.
  • the channels 3 can as described above by a Variety of rotationally symmetrical mandrels 9 created become. However, it is also possible to use channels 3 slit-shaped or groove-shaped, the Longitudinal extension of the slots or grooves parallel to the The bottom of the receptacle runs. The perpendicular to this Cross-sectional profile of the slots or grooves can then in Figure 3 cross-sectional profile shown with the thorns correspond. The longitudinal extension of the slots or Grooves is then preferably larger than that in the Insulating layer 2 projecting depth of the slots or grooves. The slots or grooves can be made that instead of the rotationally symmetrical mandrels Corresponding webs are provided on the tool 8.
  • the holes 4 are elongated when the insulating layer 2 directly into the receiving shell 1 is pressed. If the insulating layer 2 is first in a shape with simultaneous production of the channels 3 pressed in and only then into the receiving tray 1 inserted, then holes 4 of the receiving shell are sufficient not over the entire length of the slots or Must extend grooves. It is sufficient if the holes 4 so are distributed that from the slots or grooves Vapor bubbles can escape through the holes.
  • the slots or grooves facilitate the desired one Steam or gas leak because the channels are very form large inner surface.
  • For the creation of Slitting or creasing on tool 8 is a number of Bridges necessary, which is smaller than the number of otherwise necessary mandrels 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Cookers (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Resistance Heating (AREA)
EP00108510A 1999-04-30 2000-04-19 Logement de réception possédant une couche isolante pour éléments chauffants radiants et procédé de fabrication de rainures dans la couche isolante Withdrawn EP1049357A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919784 1999-04-30
DE1999119784 DE19919784A1 (de) 1999-04-30 1999-04-30 Aufnahmeschale mit einer Isolierschicht für Strahlungsheizelemente und Verfahren zur Herstellung von Kanälen in der Isolierschicht

Publications (2)

Publication Number Publication Date
EP1049357A2 true EP1049357A2 (fr) 2000-11-02
EP1049357A3 EP1049357A3 (fr) 2001-12-12

Family

ID=7906470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108510A Withdrawn EP1049357A3 (fr) 1999-04-30 2000-04-19 Logement de réception possédant une couche isolante pour éléments chauffants radiants et procédé de fabrication de rainures dans la couche isolante

Country Status (2)

Country Link
EP (1) EP1049357A3 (fr)
DE (1) DE19919784A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2073601A3 (fr) * 2007-12-21 2009-08-26 Eika, S.Coop Chauffage radiant électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10134520A1 (de) * 2001-07-16 2003-01-30 Bsh Bosch Siemens Hausgeraete Vorrichtung mit zumindest einer einen Garraum begrenzenden Wand

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744079A1 (de) 1976-09-30 1978-04-06 Micropore International Ltd Elektrische kochplatte mit glatter oberflaeche
DE2806367A1 (de) 1977-02-10 1978-08-17 Micropore International Ltd Thermisches, isolierendes material
EP0618399B1 (fr) 1993-03-31 1996-11-13 Wacker-Chemie GmbH Corps calorifuge microporeux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810586A1 (de) * 1988-03-29 1989-10-12 Ego Elektro Blanc & Fischer Beheizung fuer elektrische kochgeraete
GB2323507B (en) * 1997-03-21 2000-11-29 Ceramaspeed Ltd Electric heater unit and method of manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744079A1 (de) 1976-09-30 1978-04-06 Micropore International Ltd Elektrische kochplatte mit glatter oberflaeche
DE2806367A1 (de) 1977-02-10 1978-08-17 Micropore International Ltd Thermisches, isolierendes material
EP0618399B1 (fr) 1993-03-31 1996-11-13 Wacker-Chemie GmbH Corps calorifuge microporeux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2073601A3 (fr) * 2007-12-21 2009-08-26 Eika, S.Coop Chauffage radiant électrique

Also Published As

Publication number Publication date
DE19919784A1 (de) 2000-11-02
EP1049357A3 (fr) 2001-12-12

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