EP0079483B1 - Steuereinrichtung für Elektrokochplatte - Google Patents

Steuereinrichtung für Elektrokochplatte Download PDF

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Publication number
EP0079483B1
EP0079483B1 EP82109762A EP82109762A EP0079483B1 EP 0079483 B1 EP0079483 B1 EP 0079483B1 EP 82109762 A EP82109762 A EP 82109762A EP 82109762 A EP82109762 A EP 82109762A EP 0079483 B1 EP0079483 B1 EP 0079483B1
Authority
EP
European Patent Office
Prior art keywords
switch
control device
power
heating system
additional
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.)
Expired
Application number
EP82109762A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0079483A1 (de
Inventor
Felix Schreder
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25797219&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0079483(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19813144631 external-priority patent/DE3144631A1/de
Priority claimed from DE19813149556 external-priority patent/DE3149556A1/de
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT82109762T priority Critical patent/ATE18296T1/de
Publication of EP0079483A1 publication Critical patent/EP0079483A1/de
Application granted granted Critical
Publication of EP0079483B1 publication Critical patent/EP0079483B1/de
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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • 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
    • F24C15/106—Tops, e.g. hot plates; Rings electrically heated electric circuits

Definitions

  • an electric hotplate has a heater, which consists, for example, of a heating resistor which is controlled by a continuously adjustable, clocking power control device.
  • a heater which consists, for example, of a heating resistor which is controlled by a continuously adjustable, clocking power control device.
  • a time switch contained in the control element which often operates thermally, which is either the full installed output clocked by the power control device or occasionally also adapted to the particular continued cooking level set.
  • a separate switch or push button is actuated or a special handling is carried out on the power setting toggle, for example pushing it in or pulling it out.
  • the performance of conventional electric hotplates is also limited to certain values which depend on the hotplate diameter and e.g. for a hotplate diameter of 145 mm 1000 to 1500 watts, for 180 mm diameter 1500 to 2000 watts and for 220 mm diameter 2000 to 2600 watts (both normal and "hotplate").
  • the temperature switch Due to a preferred arrangement in the unheated central zone of the electric hotplate, the temperature switch has a relatively low and inertial heat coupling to the hotplate, so that it switches off with a certain time delay and does not switch on again during normal cooking or roasting.
  • the switching hysteresis can preferably be above 50 K (preferably above 100 K) in the range from 570 K (30.0 ° C) as the upper and approximately 420 K (150 ° C) as the lower response temperature.
  • the total power consumption of the electric hotplate including the additional heating, higher than that usually power assigned to the respective hotplate diameter.
  • the temperature switch ensures that the additional heating is switched off after the boiling phase.
  • the hotplate could be protected by a conventional temperature limiter, which then preferably operates with little inertia and with a low switching hysteresis and which can switch off the main heating completely or at least partially.
  • the control element can particularly preferably be a manually actuated multi-cycle switch, preferably a seven-cycle switch, to which a contact is assigned, which switches on the additional heating in addition to the heating resistors forming the main heating.
  • a contact is assigned, which switches on the additional heating in addition to the heating resistors forming the main heating.
  • an additional heating resistor would be provided in addition to the three main heating resistors, e.g. in an eighth switch position (with the usual gag division from 1 to 3 located beyond the "3" or at "3") an automatic boost function is created.
  • control heater is preceded by a diode which is effective in the higher power setting range of the power control device and there lowers the power consumption of the control bimetal for the power control device.
  • the diode In the lower power setting range, the diode is bridged or ineffective, so that the double bimetal heating output is then present, which would lead even more easily to the phenomena to be feared.
  • the temperature switch is also possible to design the temperature switch as a changeover switch which switches between the circuit which connects the consumer heating resistor to the mains via the additional contact and the circuit which contains the power control device and the consumer heating resistor.
  • the control heating of the power control unit can be connected in parallel with the consumer heating resistor.
  • the auxiliary contact must be assigned an auxiliary contact which is connected in the opposite direction and which ensures that the circuit via the power control unit and the consumer heating resistor is closed when the temperature limiter and the auxiliary contact are switched off.
  • the usual clocked power control device 17 has a snap switch 18, a bimetal 19 actuating it and a control heater 20 for the bimetal, which is connected in series with the switch 18. It is infinitely adjustable via an adjusting shaft 21 from an adjusting knob 22.
  • the entire additional heater 13 is switched on, so that a very quick heating-up process results.
  • the temperature switch 15 Depending on the coupling of the temperature switch 15 to the temperature of the hotplate, depending on the power removed, after a certain time, e.g. Activate the temperature switch 15 for 6 minutes and switch off the additional heating 13 again. Even if the power is subsequently reduced to maintain the cooking state by resetting the power control device, the temperature switch 15 remains switched off, so that the additional heating remains ineffective until the hotplate has been taken out of operation and has largely cooled down. A large hysteresis of the temperature switch is advantageous for this function.
  • This switching temperature difference between switching off and on again should be over 50 K, preferably over 100 K to 150 K, and makes it possible to use a particularly simple and reliable temperature switch.
  • This can have a switch-off temperature of approx. 620 K (350 ° C) and a switch-on temperature of approx. 530 K (260 ° C).
  • Fig. 2 shows a hotplate 11 of the same basic structure
  • the main heating 12 consists of three individual, some different sized heating resistors, which are connected to a conventional seven-stroke switch 17a shown only as a block and by rotating the adjusting shaft 21a in the usual manner individually, in Can be connected in series and in parallel, so that six power levels can be implemented.
  • the main heating 12a could have 1200 watts in the division 600, 400, 200 watts and the additional heating 1300 watts. This results in the lowest power of only 110 watts, a value that has so far been unrivaled by a high-performance hotplate with a 7-stroke circuit. Even if the power is left in the usual range, e.g. at 2000 watts in the division 1000: 1000 watts, compared to the previous versions, the advantages of quick boiling without switching up and down by the operator and the finer adjustment option over the entire heat remain - and continued cooking area preserved (lowest power below 100 watts).
  • Large hot plates for restaurants can also be improved in use, for example by adding a 300 x 300 mm square hot plate to the 2500 watt, 7-cycle controlled additional heating, which enables rapid heating.
  • the resistances of the main heating can be switched off via a temperature limiter 24 which, likewise in FIG. 1, is a low-inertia temperature limiter which is well coupled to the temperature of the heating of the hotplate.
  • the additional heating 13 is connected in the same way as in FIG. 1 via the temperature switch 15 and the switch 23 in parallel to the branch of the main heating and independently of this.
  • the switch 23 is closed by the setting shaft 21 or a switching cam arranged thereon, if the switch is set beyond or to the maximum power level of the normal seven-cycle switch.
  • the additional heating then works together with the temperature switch in the manner already described as automatic heating.
  • a particularly fine adjustability is achieved if the connection is switched on at one of the upper power levels, advantageously from the beginning of the continued cooking range (with the usual scaling from 1 to 3 from level 2).
  • the consumer heating resistor 12 of an electric hotplate 11b is connected in series with the switch 18 of a clocking power control device 17.
  • the control heater 20 is connected in series with the consumer heating resistor 12 in the example shown.
  • a bridging line 40 is connected in parallel with the power control device 17 and contains the manually switchable additional switch 23 and the contact 16 of the temperature switch 15, which normally, i.e. in the lower temperature range, is closed.
  • the additional contact 23 is closed in all or part, preferably the upper part, of the power setting range of the power control device. If the previously cold hotplate is placed in a power range in which the contact 23 is closed, the power control device 17 is bridged and the control heater 20 remains de-energized despite the then closed switch 18. The total power is thus applied to the hotplate until the temperature switch 15 responds and opens the contact which has been closed until then.
  • the power control device 17a contains a control heater 20a which is connected in parallel to the consumer heating resistor, i.e. 3:
  • the parallel branch 42 containing the control heating is connected to a fixed mating contact 33 of the switch 17a of the power control unit, while the consumer heating resistor is connected to a fixed mating contact 44 which is electrically isolated therefrom.
  • the switch 18a contains two movable contacts 45, 46 which can contact the two fixed mating contacts 43, 44 together and simultaneously.
  • FIG. 5 shows the top view of the snap spring 30 of the switch 18a according to FIG. 2. It is fastened at one end 31 to a snap switch carrier and connected to a pole.
  • the snap spring 30 made of thin spring material has a bead-shaped groove on which the actuating element, i.e. the expansion member 18 acts and has a spring tongue 33, which is directed from its free end 32 towards the fixed end 30 and is separated by a U-shaped cutout, and is supported on a support bearing 34 of the snap switch carrier which projects through the cutout.
  • FIGS. 6 and 7 The embodiment of a snap spring 30a shown in FIGS. 6 and 7 is otherwise identical. Only the end of the snap spring is forked into two mutually parallel sections by an incision 35 into which an insulating web 36 of the housing projects. The relatively flexible sections carrying the contacts ensure that good contact between the two contact pairs is possible even with uneven contact wear.
  • the embodiment shown in FIG. 8 has a temperature switch 15a, which has a contact 51 acting as a changeover switch.
  • the auxiliary switch 23 is assigned an auxiliary contact 50, which is switched together with the auxiliary switch 23 via the setting shaft 21, but in opposite directions, so that it is opened when the auxiliary contact 23 closes and vice versa.
  • the power control device 17b corresponds to the power control device 17 according to FIG. 3, that is to say has a snap switch 18 with only one contact pair, but the control heater 20a is connected in parallel to the consumer heating resistor 12.
  • the power control device is applied to the changeover contact 51 of the temperature switch 15a, which is therefore closed when the temperature switch has switched off the bridging branch 40 via the additional contact 23 after reaching its switching temperature.
  • the auxiliary contact 50 bridges the temperature switch 15a if the temperature switch has not yet reached its response temperature.
  • the consumer heating resistor 12 is heated at full power via the bridging branch 40.
  • the power control device 17b is switched off because the temperature switch 15a does not close the changeover contact 51 and the auxiliary contact 50 is also switched off.
  • the parallel branch 40 is switched off and the power control device 17b is switched on, which then supplies the power in a clocked manner in a normal manner.
  • the auxiliary contact 50 is closed and ensures that the power control device is effective even when the temperature switch 15a has not yet been switched over.
  • the additional contact 50 can be dispensed with if a parboiling aid is provided over the entire power range of the power control unit 17b, but this is usually not desirable because the resulting initial heating would be too great with very low set powers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
EP82109762A 1981-11-10 1982-10-22 Steuereinrichtung für Elektrokochplatte Expired EP0079483B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82109762T ATE18296T1 (de) 1981-11-10 1982-10-22 Steuereinrichtung fuer elektrokochplatte.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3144631 1981-11-10
DE19813144631 DE3144631A1 (de) 1981-11-10 1981-11-10 Elektrokochplatte
DE3149556 1981-12-15
DE19813149556 DE3149556A1 (de) 1981-12-15 1981-12-15 Steuereinrichtung fuer eine elektrokochplatte

Publications (2)

Publication Number Publication Date
EP0079483A1 EP0079483A1 (de) 1983-05-25
EP0079483B1 true EP0079483B1 (de) 1986-02-26

Family

ID=25797219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109762A Expired EP0079483B1 (de) 1981-11-10 1982-10-22 Steuereinrichtung für Elektrokochplatte

Country Status (9)

Country Link
US (1) US4503321A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0079483B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU557907B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1203828A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3269445D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES8308193A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI823782L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR82314B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
YU (1) YU45120B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518124A1 (de) * 1985-05-21 1986-11-27 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Elektrokochgeraet
DE3522546A1 (de) * 1985-06-24 1987-01-02 Bosch Siemens Hausgeraete Schaltungsanordnung in elektroherden zur heizleistungssteuerung
JPS62271386A (ja) * 1986-01-04 1987-11-25 カ−ル・ツワイス・ステイフツング ガラス−セラミツク系調理用レンジ
DE3617742A1 (de) * 1986-05-27 1987-12-03 Ego Elektro Blanc & Fischer Elektrokochplatte
GB2228395A (en) * 1989-02-20 1990-08-22 Emaco Electric hotplates
GB2237940A (en) * 1989-09-14 1991-05-15 Electrolux Components Ltd Power controller for electric hotplate
DE4003872A1 (de) * 1990-02-09 1991-08-14 Ego Elektro Blanc & Fischer Kochplattensteuerung
US8723085B2 (en) * 2010-11-24 2014-05-13 Pioneering Technology Corp. Temperature controlled/limiting heating element for an electric cooking appliance

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2556433A1 (de) * 1975-12-15 1977-06-23 Bosch Siemens Hausgeraete Anordnung zur leistungsregelung elektrischer kochplatten

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DE18895C (de) * A. W. BREWTNALL in London Neuerungen im Verbinden bezw. Kuppeln der Zweigdrähte mit den Hauptdrähten oder Kabeln für elektrische Zwecke und im Isoliren der Verbindung
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Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556433A1 (de) * 1975-12-15 1977-06-23 Bosch Siemens Hausgeraete Anordnung zur leistungsregelung elektrischer kochplatten

Also Published As

Publication number Publication date
US4503321A (en) 1985-03-05
FI823782A7 (fi) 1983-05-11
YU45120B (en) 1992-03-10
AU557907B2 (en) 1987-01-15
CA1203828A (en) 1986-04-29
AU9022282A (en) 1983-05-19
ES517194A0 (es) 1983-08-01
GR82314B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1984-12-13
FI823782L (fi) 1983-05-11
FI823782A0 (fi) 1982-11-04
ES8308193A1 (es) 1983-08-01
DE3269445D1 (en) 1986-04-03
YU250982A (en) 1984-12-31
EP0079483A1 (de) 1983-05-25

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