[go: up one dir, main page]

EP0884927A2 - Elément de commutation pour appareils électriques, comme des appareils de chauffage électrique - Google Patents

Elément de commutation pour appareils électriques, comme des appareils de chauffage électrique Download PDF

Info

Publication number
EP0884927A2
EP0884927A2 EP98110441A EP98110441A EP0884927A2 EP 0884927 A2 EP0884927 A2 EP 0884927A2 EP 98110441 A EP98110441 A EP 98110441A EP 98110441 A EP98110441 A EP 98110441A EP 0884927 A2 EP0884927 A2 EP 0884927A2
Authority
EP
European Patent Office
Prior art keywords
switch
switching element
snap
element according
electromagnetic actuator
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Withdrawn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
EP98110441A
Other languages
German (de)
English (en)
Other versions
EP0884927A3 (fr
Inventor
Willi Essig
Franz Dr. Bogdanski
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 EP0884927A2 publication Critical patent/EP0884927A2/fr
Publication of EP0884927A3 publication Critical patent/EP0884927A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H05B1/0216—Switches actuated by the expansion of a solid element, e.g. wire or rod
    • 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
    • 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 switching element for electrical devices, such as Electric heating devices, in particular for electric radiant heaters for heating hot plates and hot plates, such as glass ceramic plates.
  • Temperature limiter and temperature monitor The temperature or However, power is controlled via separate control units. In the case of hot plates, for example, everyone is electric Heating circuit equipped with two switch contacts. With these are the requirements of the applicable regulations fulfilled that if one of the control or monitoring devices fails continues to ensure a temperature-limiting function have to be. Especially when using electronic Controls must be used to ensure disconnection from the mains usually an electromechanical relay as an additional component be used.
  • DE-33 33 645 A and DE-37 05 261 A are temperature limiters become known with rod-shaped temperature sensor, the two switching contacts actuated by the sensor feature. One is provided in the heating circuit and switches on The heater overheats while the other has a signaling contact for the display of the heating status and accordingly is adjusted lower.
  • the object of the invention is to provide a switching element, especially in compliance with the security requirements is simple and compact and inexpensive to manufacture is.
  • the Switching element one of two physically separate Actuators actuated switch. It can be achieved that a common switch of two different control parameters and control principles is driven here. For example, a first Actuating element actuating a snap switch thermal expansion element, for example a rod-shaped Feeler, and the second an electromagnetic, in addition acting on the snap switch for its actuation Be an actuator.
  • the thermal rod limiter can also be controlled electrically, e.g. from one electronic temperature or power control or - Control.
  • the electromagnetic actuator can be an electromagnet be, which preferably has a relay hinged anchor. It can be energized during operation of the electric heating device and Switch off be energized. This causes the heat loss kept low by the electromagnetic component.
  • the electromagnetic actuator can also for Positive opening of the switch contacts of the snap switch be. This can e.g. done in that in the Proximity of the switch contacts of the snap switch preferably acts directly on the switch spring. So here too failure of the thermal release, for example by "sticking" the switch contacts, the electromagnet over its suddenly attracting anchor "open” the contacts and thus remedy the fault.
  • the only drawing figure shows a schematic Representation of a thermal switch, namely one Rod temperature limiter with an additional electromagnetic Actuator on an electrical Radiant heater.
  • the drawing shows a switching element 11, which is a switch head 12 and one from this outstanding long rod probe 13 has an actuator for one in the switch head attached snap switch 26 forms.
  • the rod probe 13 has one made of metal, for example stainless steel, existing sleeve 15 in which a ceramic rod 14 is added is. This is based on the free end 16 of the sleeve an adjustment pin 17 attached there and acts on an actuating pin 20, the one hand in the Sleeve and on the other hand in a snap switch carrier 27 guided and by a spring 22 towards the end 16 is burdened.
  • the sleeve 15 is formed with an upper flange 18 in attached a mounting bracket 19 which in the housing 37 of the Switch head is set.
  • a collar 21 on the actuating pin 20 acts on a pronounced actuation point 23 a snap spring 24 of the snap switch 26, the one Spring tongue 25, which on an abutment of the snap switch carrier 27, which is attached to the housing 37, supported is and thus causes the snap action.
  • the free End of the other end on the snap switch carrier 27 fixed snap spring 24 carries the movable contact 28, who is usually under the action of the braced Spring tongue on a mating contact 29 fastened in the housing 37 is present and closes the circuit.
  • the anchor is a folding anchor known from relay construction, the here an angular shape with an enclosed one Has an angle of just over 90 °.
  • One leg of the existing ferromagnetic material works with the electromagnetic core 36 together and is in at its end the recess 31 is inserted.
  • the other leg runs on Carrier is approximately parallel to the axis of the electromagnet 33 and recorded there in a holder 35, which is with a Place the spring clip over the break point of the anchor and this keeps moving.
  • Dash-dotted lines indicate that the switching element 11 with his switch head 12 on the outer edge of a radiant heater 40, that is, an electrical device, can be arranged includes an electrical resistance heater 41.
  • she lies in the usual way under the actual cooking surface forming glass ceramic plate and also acts on the between you and the glass ceramic plate attached temperature sensor 13 thermal. It is connected to an electrical mains connection 42 connected via the snap switch 26.
  • the electromagnetic actuator 32 is controlled by a control and / or Control device 43 is subjected to a control current, the one setting option 45 in the form of a setting button has and possibly connected to a temperature sensor 44 could be the temperature of the radiator, the glass ceramic plate or, preferably, the cooking vessel or the Cooking food senses.
  • the regulating and control device 43 is therefore there the power supplied to the heater 41 in the form of power pulses different duration and sequence clocking freely.
  • the timing is preferably electronic power controlled or temperature controlled due to the Signals from sensor 44 or other circumstances.
  • the device is operated via a mechanical power switch 46 switched on. This also provides operational readiness of the control and regulating device 46 ago and with it Adjustment button 45 operated together.
  • the snap switch 26 is closed because the "cold" rod sensor 13 the actuating pin 20 pressed against the force of the spring 22 upwards stops and the actuation point 21 of the snap spring 24 not so is acted on by the snap spring in the switch-off direction would affect. In its idle state it is in the "on" position of contacts 28, 29.
  • the actuator 32 is without current.
  • the heating 41 is acted upon Radiant heater works and the temperature rises.
  • the rule and Control device 43 gives control pulses at intervals predetermined length from the electromagnetic actuator 32 act on.
  • the electromagnet 33 then pulls the armature 34 and opens the contacts 28, 29 in that the snap spring 24 is bent downwards. She is there to a counter bearing 47.
  • the armature 34 drops off again the snap spring 24 jumps back into the illustrated Closed position.
  • This game repeats itself until the switching temperature of the thermal expansion sensor 13 is reached.
  • This temperature is usually set very high, in order to be able to release sufficient power, it regulates the Heating off before the temperature of the glass ceramic plate reached an inadmissible value for them. This is in the area between 600 and 700 ° on the underside of the glass ceramic plate Case.
  • the elongation of the sleeve 15 is so much greater than that the ceramic pin 14 that the spring 22 the actuating pin 20 so far with collar 21 against actuation point 23 has pressed that the snap point of the snap spring 24th is reached and the pretensioned spring tongue 25 the snap switch opens suddenly. Since the recess 31 on the actuation tab 30 is large enough this is not the electromagnetic actuator 32. The The heating is switched off and can turn on again cooling down. The interim work of the regulation or Control from device 43 has no influence on the heating. The electromagnetic actuator then works practically empty until the snap switch after sufficient Cooling of the temperature sensor 13 due to the thermal Actuator is turned on again.
  • the double is Security available. If the expansion sensor is faulty is, the load switch from the electronic control circuit opened and if the snap switch e.g. by "gluing” the If the contacts fail, the load switch is removed from the magnetic circuit forced open.
  • the one exerted by the electromagnet 33 mechanical pulse should be chosen so large that it too “glued” contacts opens due to its own opening force the snap switch could not be opened. This also enables a weaker spring 22 or one Snap spring designed for great switching sensitivity, because this malfunction need not be prevented mechanically.
  • the snap spring is opened by the electromagnet operated atypically by opening against the obtained closing force of the snap spring without its own snap action he follows. However, it has been found that this endured by the snap spring and its mechanism of action and through the anchor's point of attack near the Contacts 28, 29, the opening force is also immediate and transferred to the snap spring without significant elasticity, which also contributes to the effective positive opening. A quick and comparable to a snap effect Wear-resistant and low-contact opening is through the Given the characteristic of the electromagnet.
  • the device 43 can be an electronic control from highly integrated Contain blocks that contain all functions Control, pot detection, pot size detection and residual heat display contain.
  • a particular advantage is that between the Operating parts (adjustment knob 45) or the device 43 and the Power switching element, so the contacts 28, 29 and which they operating actuator 32 only control lines required are.
  • the power control switch is in the anyway integrated thermal limiter and does not need to be connected separately via power lines to become.
  • the two actuators act independently from each other and influence each other despite the integrated design not each other.
  • the actuators' points of attack are geometrically separated from each other, which is not just one clear separation of functions, but also different Properties in the separation characteristic leads and thus prevents switch failures.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
EP98110441A 1997-06-12 1998-06-08 Elément de commutation pour appareils électriques, comme des appareils de chauffage électrique Withdrawn EP0884927A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724820 1997-06-12
DE1997124820 DE19724820A1 (de) 1997-06-12 1997-06-12 Schaltglied für Elektrogeräte, wie Elektrowärmegeräte

Publications (2)

Publication Number Publication Date
EP0884927A2 true EP0884927A2 (fr) 1998-12-16
EP0884927A3 EP0884927A3 (fr) 1999-09-15

Family

ID=7832256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98110441A Withdrawn EP0884927A3 (fr) 1997-06-12 1998-06-08 Elément de commutation pour appareils électriques, comme des appareils de chauffage électrique

Country Status (2)

Country Link
EP (1) EP0884927A3 (fr)
DE (1) DE19724820A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1339260A1 (fr) * 2002-02-25 2003-08-27 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Capteur de température
WO2008099134A1 (fr) * 2007-02-13 2008-08-21 Ceramaspeed Limited Détecteur de température pour dispositifs de chauffage électrique par rayonnement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919949C5 (de) * 1999-04-30 2013-03-07 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung mit einem Sicherheitsschalter
DE102016219529A1 (de) * 2016-10-07 2018-04-12 Te Connectivity Germany Gmbh Elektrisches Schaltelement mit unmittelbarer Ankerkopplung
US11887797B2 (en) 2016-10-07 2024-01-30 Te Connectivity Germany Gmbh Electrical switching element comprising a direct armature coupling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865769C (de) * 1949-02-25 1953-02-05 Siegfried Junghans Verfahren und Anordnung zur Temperaturregelung bei thermischen Geraeten
DE2126876A1 (de) * 1971-05-29 1972-11-30 Licentia Gmbh Ferneinstellbarer Temperaturregler
GB2295490A (en) * 1994-11-23 1996-05-29 Diamond H Controls Ltd Thermostat

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640181C2 (de) * 1976-09-07 1985-03-28 Peter 7530 Pforzheim Hofsäss Elektrischer Temperaturschalter
DE3140074A1 (de) * 1981-10-08 1983-04-28 Fischer, Karl, 7519 Oberderdingen Elektrokochgeraet
DE3415539A1 (de) * 1984-04-26 1985-11-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektrischer schalter zur steuerung eines laststromes
DE3421874A1 (de) * 1984-06-13 1985-12-19 Brown, Boveri & Cie Ag, 6800 Mannheim Klappanker-lagerung
DE3613902A1 (de) * 1986-04-24 1987-10-29 Ego Elektro Blanc & Fischer Kochplatte, insbesondere fuer grosskuechen-herde
DE8800617U1 (de) * 1988-01-20 1988-03-10 E.S. Elektro-, Schalt- u. Regeltechnik GmbH, 4600 Dortmund Elektrisch beheiztes Gerät mit Bimetall-Thermostat
DE4019488A1 (de) * 1990-06-19 1992-01-02 Vdo Schindling Temperaturschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865769C (de) * 1949-02-25 1953-02-05 Siegfried Junghans Verfahren und Anordnung zur Temperaturregelung bei thermischen Geraeten
DE2126876A1 (de) * 1971-05-29 1972-11-30 Licentia Gmbh Ferneinstellbarer Temperaturregler
GB2295490A (en) * 1994-11-23 1996-05-29 Diamond H Controls Ltd Thermostat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1339260A1 (fr) * 2002-02-25 2003-08-27 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Capteur de température
US6781505B2 (en) 2002-02-25 2004-08-24 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Thermally actuated switch
WO2008099134A1 (fr) * 2007-02-13 2008-08-21 Ceramaspeed Limited Détecteur de température pour dispositifs de chauffage électrique par rayonnement

Also Published As

Publication number Publication date
EP0884927A3 (fr) 1999-09-15
DE19724820A1 (de) 1998-12-17

Similar Documents

Publication Publication Date Title
EP1834027B1 (fr) Serrure de porte pour la porte d'un appareil menager
DE3633759C2 (de) Steuereinheit mit Übertemperatursicherung
DE3734293A1 (de) Elektromagnetische schaltvorrichtung mit austauschbaren schaltern
CH668108A5 (de) Regelventil fuer heizkoerper.
EP0884927A2 (fr) Elément de commutation pour appareils électriques, comme des appareils de chauffage électrique
DE2850389C3 (de) Temperaturregler für Elektrowärmegeräte, insbesondere für Elektrokochplatten
DE4401670C2 (de) Anordnung zum Steuern der Heizenergiezufuhr zu den Heizwicklungen eines elektrischen Durchlauferhitzers
DE68926198T2 (de) Türverriegelung für eine Waschmaschine oder für einen Trockner
DE2640181C2 (de) Elektrischer Temperaturschalter
DE2540499C3 (de) Temperaturregler für Elektrogeräte mit einer Ausdehnungsdose
EP0295236B1 (fr) Interrupteur manuel à déclencheur électromagnétique
DE3783730T2 (de) Zeitschalter mit merfachem sicherheitszusammenbau.
EP1657491B1 (fr) Table de cuisson à gaz
DE1806651A1 (de) Thermostatanordnung,insbesondere fuer selbstreinigende Elektrooefen
DE19924279A1 (de) Vorrichtung zur automatischen Stromabschaltung eines Stromkreises einer Haushaltsmaschine
DE3878979T2 (de) Temperaturbeeinflusste vorrichtung und ausschalter.
DE2343834A1 (de) Tamperaturbegrenzer
DE2103498C3 (de) Thermostat mit umstellbarer Schaltfunktion
AT163973B (de) Schütz mit thermischer Auslösung
EP0901309A2 (fr) Regulateur de puissance
CH500648A (de) Bimetallschalteinrichtung zur Einstellung und Regelung der Leistungsaufnahme einer elektrischen Kochplatte
DE3645341C2 (de) Steuereinheit mit Übertemperatursicherung
DE444204C (de) Einrichtung zum Schutz gegen UEberhitzung und zur Waermereglung elektrisch beheizter Vorrichtungen
EP1856451A1 (fr) Appareil a gaz, en particulier plaque de cuisson a gaz
DE1195359B (de) Kontaktfederleiste mit ueber ein gemeinsames Andrueckelement betaetigbaren Kontaktfedern fuer Steckverbindungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 6H 05B 3/74 A, 6H 05B 1/02 B, 6H 01H 37/00 B

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20000316