EP0114307A1 - Dispositif de régulation de la température d'un appareil de chauffage - Google Patents

Dispositif de régulation de la température d'un appareil de chauffage Download PDF

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Publication number
EP0114307A1
EP0114307A1 EP83112652A EP83112652A EP0114307A1 EP 0114307 A1 EP0114307 A1 EP 0114307A1 EP 83112652 A EP83112652 A EP 83112652A EP 83112652 A EP83112652 A EP 83112652A EP 0114307 A1 EP0114307 A1 EP 0114307A1
Authority
EP
European Patent Office
Prior art keywords
temperature
heat transfer
tube
transfer element
switch
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.)
Granted
Application number
EP83112652A
Other languages
German (de)
English (en)
Other versions
EP0114307B1 (fr
Inventor
Gerhard Gössler
Hans Mohr
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 Gerate Blanc und Fischer 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 Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT83112652T priority Critical patent/ATE29820T1/de
Publication of EP0114307A1 publication Critical patent/EP0114307A1/fr
Application granted granted Critical
Publication of EP0114307B1 publication Critical patent/EP0114307B1/fr
Expired 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • F24C15/105—Constructive details concerning the regulation of the temperature
    • 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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/04—Heating plates with overheat protection means
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to a temperature regulating or control device for a heating device with an elongated, in particular rod-shaped or tubular, temperature sensor exposed to heat with a control device arranged at its end for reducing the heat output of the heating device, in particular with a between a radiant heater and a glass ceramic.
  • a control device arranged at its end for reducing the heat output of the heating device, in particular with a between a radiant heater and a glass ceramic.
  • a temperature sensor for a temperature limiting device, which temperature sensor consists of a sleeve made of quartz glass and a metallic rod of greater thermal expansion arranged inside the sleeve.
  • This staff strikes a snap switch with one end, so that the snap switch is actuated when a certain temperature is reached.
  • the snap switch or another switch sits, for example, in an insulated housing made of steatite, in which the force transmission elements are accommodated between the metal rod and the adjustable snap switch with its electrical leads.
  • Such controller designs are relatively expensive, due to the quartz tube and its mechanical mounting, but also because of the articulation between the sensor rod and the controller head.
  • the invention has for its object to provide a temperature control or control device for a heating device that is easy and inexpensive to manufacture and yet has an accurate temperature behavior.
  • standard bimetal switches should be able to be used.
  • the temperature sensor is designed as a thermal transmission element and is thermally coupled to at least one temperature switch. So while in the prior art the heat sensor acted purely mechanically on a switch due to different expansion, according to the measures of the invention the heat sensor is used to conduct the heat to the switch, which switch can then be a commercially available bimetal switch.
  • the temperature sensor which can in particular also be rod-shaped, can be guided, for example, along a diameter over the radiant heater. It is of course also possible to use it in curved shapes.
  • the temperature switch is preferably located outside the heated area, in particular in the area of one end of the heat transfer element. Of course, it is possible to attach a switch to both ends of the heat transfer element if, for example, different temperatures are to be sensed.
  • the temperature switch is a commercially available bimetal switch, in particular with a bimetal spring washer. These bimetal switches are available at very low prices, so that the entire control device can be manufactured cheaply.
  • the heat transfer element is formed by a tube made of scale-free material, in particular stainless steel, with a rod arranged therein, preferably made of copper.
  • the scale-free stainless steel is able to withstand the high temperatures even under long-term stress, while the material arranged inside is used due to its good thermal conductivity.
  • the invention proposes in a further development that the tube is closely connected to the inner rod by pressing, in particular in prismatic form. This has the advantage that it there is a tight connection between the inside of the tube and the inner rod, so that not only is there a good heat transfer, but above all there is also a uniform heat transfer at all points of the temperature sensor.
  • the tube and / or the copper wire is pressed with a cable lug to which the temperature switch is attached, in particular screwed on.
  • the crimping with the cable lug can be carried out simultaneously with the crimping of the tube and the inner rod, so that only a single operation is required.
  • the cable lug is preferably also made of copper, preferably with a temperature-resistant surface, which can in particular be a nickel plating.
  • the tube has an at least one-sided flattened, in particular triangular cross-section, which may arise when pressing with the inner rod.
  • This design makes it possible to allow the tube to rest directly on the underside of a glass ceramic cooktop, advantageously with the flattened side. This in turn leads to good heat transfer from the surface. whose heat is to be monitored on the rod.
  • a semicircular cross section can also be used.
  • the invention further proposes that the dimensions and / or the shape and / or the thermal conductivity of the tube and / or the inner rod are selected such that the permissible permanent temperature of the temperature switch is not exceeded.
  • the wall thickness of the pipe can be selected so that it is transferred well to the inner rod.
  • the temperature sensor can also be guided in an arc over the area to be monitored.
  • FIG. 1 shows a cross section through a glass ceramic cooktop 11 and a radiant heater arranged below it.
  • the radiant heater contains a radiant heater 12.
  • the radiant heater 12 is arranged within a molded body 13, which is a boundary to the outside and down.
  • An insulating layer 14 is attached below the molded body 13, the entire radiant heater being surrounded by a sheet metal plate 15.
  • a heat transfer element 16 in the form of a rectilinear tube 17 runs transversely to the heating, see also FIG. 2.
  • the heat transfer element 16 is bent slightly downward on the right-hand side in FIG can be put through.
  • the heat transfer element 16 is thermally connected to a bimetal temperature controller 21 via a type of cable lug 20.
  • FIG. 2 shows the position of the tube 17 of the heat transfer element and the bimetal temperature controller 21 in detail. It can be seen that the right end extends through the plate edge 19, while the entire tube 17 of the heat transfer element 16 has a diameter across the Radiant heater 12 runs.
  • the bimetallic temperature controller 21 which can contain a bimetallic spring washer, not shown, is provided with two connecting lines 22, 23, one of which leads to a plug pin 24 of a connecting piece 25, while the other is connected to one end of the radiant heater 12. Since the tube 17 of the heat transfer element 16 is exposed to the heat of the glass ceramic cooktop 11 over practically its entire length, it takes on its temperature and dissipates it to both sides, the heat dissipated to the left being directly via the cable lug 20 is transmitted to the bimetal controller 21. Therefore, the temperature that the bimetal controller assumes is a measure of the temperature of the glass ceramic cooking surface 11, even if its temperature is significantly lower.
  • the arrangement of the bimetal controller 21 is shown in detail in FIG. 3.
  • the bimetal controller 21 has a housing in which a bimetal spring washer is arranged in a heat-conducting manner.
  • the housing 26 of the bimetallic controller 21 has on its right side a screw 27, onto which the lower leg 28 of the cable lug 20, which is provided with a hole, is attached and screwed tight with the aid of a nut 29. This creates a thermally good connection between the cable lug and the housing 26 of the temperature controller 21.
  • the upper leg 30 of the cable lug 20 is tightly pressed with the inner rod 31, so that a good heat-conducting connection is also produced here.
  • FIG. 4 shows the cross section of an embodiment of a heat transfer element 16. It can be seen that it consists of an outer tube 17 with a triangular cross section, in the interior of which a good heat-conducting material is introduced, for example a copper rod 31.
  • the heat transfer element 16 becomes attached in such a way that its upper flat side comes to rest directly on the underside of the glass ceramic cooking surface 11. Due to the relatively low height of the tube 17, the device also requires little space.
  • the wall thickness of the tube 17 can be, for example, about 0.3 mm.
  • the outer tube 17 and the copper rod 31 are brought into good heat-conducting connection by reducing, but preferably by prism-like pressing. With the pressing process, the cable lug 20 is pressed together with the copper wire 31 at one end.
  • the cable lug 20, which, like the copper rod 31, can consist of electrolytically pure copper, expediently has a temperature-resistant surface, for example a nickel plating.
  • the heat transfer element 16 is attached on the right-hand side by inserting it into the opening 18, while on the left-hand side a holding clip 32, for example welded to the tube 17, is simply placed over the edge 19 of the plate plate 15.
  • the low cross section of the tube 17, see FIG. 4, enables the radiant heater to be of a very flat construction, because of which one can either achieve lower plate temperatures at a given height or the overall height of the radiator can be made lower at previous plate temperatures.
  • the heat transfer element 16 is completely insensitive to impact and shock, so that it poses no problems in this respect during installation.
  • the temperature regulation or control device proposed by the invention is of course not limited to radiant heaters for glass ceramic cooktops. It can be used with advantage in all heating devices where the commercially available and inexpensive normal bimetal switches cannot be used directly due to excessive heat.
  • the disorder of the heat transfer element directly on the underside of the glass ceramic surface has the advantage that the sensor senses influences, such as an offset pot, pot quality, idling, quantity, etc., and can react accordingly.
  • the control behavior is improved on this point.
  • the thermal design of the sensor is adapted to the switching temperature standardized by the bimetal manufacturer by dimensioning the masses and surfaces of the outer jacket (preferably poor heat conductor) and the inner rod (preferably very good heat conductor).
  • the respective sensor rod can be matched to the heating in terms of its thermal data.
  • a stainless steel tube with the dimensions ß 2 x 0.16 mm is used as the outer jacket for the hotplate heating with a nominal diameter of 145 mm and a copper conductor 0 1.6 mm (hotplate 180 mm: ⁇ 1.3mm) as the inner rod.
  • the increase in the mass of the outer casing increases the dead time (transient response and control amplitude).
  • a change in the copper mass influences the switching temperature measured on the glass ceramic surface due to the change in the amount of heat that can be transported.
  • a further adjustment can be achieved via the position of the sensor and its shape (exposure to heat). For example, the pot sensitivity when using a triangular cross-section with a narrow side facing the plate is not as pronounced as with a wider side. An angle of 110 ° between the other sides is preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Resistance Heating (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cable Accessories (AREA)
  • Control Of Temperature (AREA)
  • Control Of Combustion (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
EP83112652A 1982-12-18 1983-12-15 Dispositif de régulation de la température d'un appareil de chauffage Expired EP0114307B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112652T ATE29820T1 (de) 1982-12-18 1983-12-15 Temperaturregeleinrichtung fuer ein waermegeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823247028 DE3247028A1 (de) 1982-12-18 1982-12-18 Temperaturregeleinrichtung fuer ein waermegeraet
DE3247028 1982-12-18

Publications (2)

Publication Number Publication Date
EP0114307A1 true EP0114307A1 (fr) 1984-08-01
EP0114307B1 EP0114307B1 (fr) 1987-09-16

Family

ID=6181126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112652A Expired EP0114307B1 (fr) 1982-12-18 1983-12-15 Dispositif de régulation de la température d'un appareil de chauffage

Country Status (5)

Country Link
EP (1) EP0114307B1 (fr)
AT (1) ATE29820T1 (fr)
DE (2) DE3247028A1 (fr)
ES (1) ES528096A0 (fr)
YU (1) YU45166B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250880A2 (fr) 1986-07-03 1988-01-07 E.G.O. Elektro-Geräte Blanc u. Fischer Corps de chauffage à rayonnement
EP0303854A1 (fr) * 1987-08-18 1989-02-22 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur électrique
GB2218605A (en) * 1988-05-13 1989-11-15 Redring Electric Ltd Control means for an electric heater unit for an electric ceramic hob
GB2225920A (en) * 1988-12-09 1990-06-13 Redring Electric Ltd Controlling an electric heater unit for an electric ceramic hob
WO2004066049A1 (fr) * 2003-01-18 2004-08-05 Ceramaspeed Limited Dispositif limiteur de temperature
CN105252685A (zh) * 2015-11-14 2016-01-20 际华三五一五皮革皮鞋有限公司 一种铁脚后跟加热模具

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022292A1 (de) * 1990-07-15 1992-01-16 Ego Elektro Blanc & Fischer Elektrisches strahlungsheizelement
DE19638517A1 (de) * 1996-09-20 1998-03-26 Ako Werke Gmbh & Co Strahlungsheizkörper für eine Kochstelle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148407A (en) * 1937-07-06 1939-02-21 Standard Electric Mfg Corp Surface burner control
US2978564A (en) * 1958-12-31 1961-04-04 Corning Glass Works Electric hot plate
DE1301404B (de) * 1967-01-05 1969-08-21 Gustav Dipl Ing Massekochplatte mit einem Temperaturregler
DE2045001A1 (de) * 1970-09-11 1972-03-16 Rommelsbacher H Kochplatte mit einem thermostatischen Temperaturregler
FR2101895A5 (fr) * 1970-07-24 1972-03-31 Gen Electric
US3710076A (en) * 1972-02-17 1973-01-09 J Frazier Radiant surface-heater and temperature sensing assembly
DE2627373A1 (de) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Signaleinrichtung an kochgeraeten mit einer glaskeramikkochflaeche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1318401A (en) * 1919-10-14 Thermostat
DE1133584B (de) * 1961-03-18 1962-07-19 Busch Jaeger Duerener Metall Temperaturregler oder -melder
DE2546274A1 (de) * 1975-10-16 1977-04-21 Inter Control Koehler Hermann Temperaturregler-sicherheitsthermostat-kombination
DE2839161A1 (de) * 1978-09-08 1980-03-20 Ego Regeltech Temperaturbegrenzer fuer eine glaskeramik-kocheinheit
DE2943922A1 (de) * 1979-10-31 1981-05-14 Ego Elektro Blanc & Fischer Temperaturmelder zur anzeige des temperaturzustandes einer glaskeramik-kochflaeche
FR2476308A1 (fr) * 1980-01-14 1981-08-21 Johnson Matthey Co Ltd Plaque en vitre ceramique comprenant un dispositif de mesure de la temperature
DE3100758A1 (de) * 1981-01-13 1982-09-02 Ako Werke Gmbh & Co Schalteinrichtung
DE3108025A1 (de) * 1981-03-03 1982-09-16 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektro-heizeinheit zur beheizung einer platte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148407A (en) * 1937-07-06 1939-02-21 Standard Electric Mfg Corp Surface burner control
US2978564A (en) * 1958-12-31 1961-04-04 Corning Glass Works Electric hot plate
DE1301404B (de) * 1967-01-05 1969-08-21 Gustav Dipl Ing Massekochplatte mit einem Temperaturregler
FR2101895A5 (fr) * 1970-07-24 1972-03-31 Gen Electric
DE2045001A1 (de) * 1970-09-11 1972-03-16 Rommelsbacher H Kochplatte mit einem thermostatischen Temperaturregler
US3710076A (en) * 1972-02-17 1973-01-09 J Frazier Radiant surface-heater and temperature sensing assembly
DE2627373A1 (de) * 1976-06-18 1977-12-22 Ego Elektro Blanc & Fischer Signaleinrichtung an kochgeraeten mit einer glaskeramikkochflaeche

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250880A2 (fr) 1986-07-03 1988-01-07 E.G.O. Elektro-Geräte Blanc u. Fischer Corps de chauffage à rayonnement
EP0303854A1 (fr) * 1987-08-18 1989-02-22 E.G.O. Elektro-Geräte Blanc u. Fischer Radiateur électrique
US4931621A (en) * 1987-08-18 1990-06-05 E.G.O. Elektro-Gerate Blanc U. Fischer Electric heater
GB2218605A (en) * 1988-05-13 1989-11-15 Redring Electric Ltd Control means for an electric heater unit for an electric ceramic hob
GB2225920A (en) * 1988-12-09 1990-06-13 Redring Electric Ltd Controlling an electric heater unit for an electric ceramic hob
WO2004066049A1 (fr) * 2003-01-18 2004-08-05 Ceramaspeed Limited Dispositif limiteur de temperature
ES2264397A1 (es) * 2003-01-18 2007-06-16 Ceramaspeed Limited Calentador electrico.
US7388175B2 (en) 2003-01-18 2008-06-17 Ceramaspeed Limited Temperature-limiting device
CN105252685A (zh) * 2015-11-14 2016-01-20 际华三五一五皮革皮鞋有限公司 一种铁脚后跟加热模具

Also Published As

Publication number Publication date
YU45166B (en) 1992-03-10
DE3373771D1 (en) 1987-10-22
ES8406832A1 (es) 1984-08-01
YU244283A (en) 1985-12-31
DE3247028A1 (de) 1984-06-20
ES528096A0 (es) 1984-08-01
EP0114307B1 (fr) 1987-09-16
ATE29820T1 (de) 1987-10-15

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