EP2844029B1 - Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung - Google Patents

Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung Download PDF

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Publication number
EP2844029B1
EP2844029B1 EP14179435.4A EP14179435A EP2844029B1 EP 2844029 B1 EP2844029 B1 EP 2844029B1 EP 14179435 A EP14179435 A EP 14179435A EP 2844029 B1 EP2844029 B1 EP 2844029B1
Authority
EP
European Patent Office
Prior art keywords
heating element
heating
heating device
radius
support
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.)
Active
Application number
EP14179435.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2844029A1 (de
Inventor
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 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
Priority to PL14179435T priority Critical patent/PL2844029T3/pl
Publication of EP2844029A1 publication Critical patent/EP2844029A1/de
Application granted granted Critical
Publication of EP2844029B1 publication Critical patent/EP2844029B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B3/746—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
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0266—Cooktops
    • 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
    • H05B3/76—Plates with spirally-wound heating tubes
    • 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

Definitions

  • the invention relates to a heating device and a method for operating a heating device.
  • a heating device having a plurality of independent and separate long heating elements, divide them into three heating elements.
  • a first and a second heating element are connected via an excess temperature fuse in the form of a so-called rod controller to a power supply.
  • the overtemperature fuse switches off the two heating elements in the event of an overtemperature.
  • Such an excess temperature may be about 500 ° C to 600 ° C and considered a threat to a cooktop plate made of glass ceramic.
  • a third heating element is connected directly to a power supply without monitoring by the over-temperature fuse and without interposing the over-temperature fuse. The electrical power of the third heating element is significantly lower than that of the first second heating element du.
  • the invention has for its object to provide an aforementioned heating device and a method for their operation, with which problems of the prior art can be solved and it is particularly possible, an accelerated operation on the one hand and a holding operation in conjunction with to enable a so-called energy regulator on the other hand.
  • the heating device is provided for a hotplate in a hob or over her such a hotplate is formed.
  • the heater has a plurality of independent and separate long or elongated heating elements, for example according to the EP 590315 A which are arranged in loops and / or spirally and / or meandering and / or substantially along concentric circles on a support of the heating device.
  • the carrier has at least one central region in the middle or around a center and an outer region which adjoins an outer edge.
  • the width of the central region and the width of the outer region may be approximately equal, and preferably the central region may be somewhat wider, for example 10% to 30% or even to 40%.
  • the heating elements extend in an intermeshing manner on the carrier and cover its essential area. This is from the aforementioned EP 590315 A known.
  • the heater or the carrier is overlapped by an over-temperature fuse or it is located above it. It can detect the temperature above the heating device or at least the reaching of a certain temperature, namely the so-called excess temperature at the heating device. Then the excess temperature fuse can act on the heater so that their heating power is lowered and the temperature goes back again. At least a first heating element is connected via this excess temperature fuse to a power supply for switching off the first heating element in the event of an excess temperature.
  • a second heating element preferably only the second heating element, is connected to a power supply without the interposition of this or another over-temperature fuse.
  • the second heating element is arranged both in the central area and in the outer area on the carrier, advantageously distributed in each case, wherein it has at least one turn in each of the two areas or rotates once.
  • the second heating element is provided in an outer area of the heater and in an inner area of the heater and not only outside or inside only.
  • the carrier in two areas in which the second heating element extends, is circular.
  • the central area lies within an inner radius range of up to 50% or 60% of the radius.
  • the outer area just adjoins it on the outside and thus lies in an outer radius area over 40% or 50% of the radius. Then the second heating element extends in two areas, so to speak, inside and outside.
  • an intermediate region is provided between the central region and the outer region, in which also the second heating element extends with at least one turn.
  • the width of the three areas may be approximately equal, advantageously the width of the central area is greater.
  • the carrier may be circular, wherein the central region in an inner radius range up to 40% to 50% or even up to 60% of the radius.
  • the intermediate area adjoins the central area on the outside in an intermediate radius range of 40% or 50% to 70% or 80% of the radius. Adjoining the outside, in turn, is the outer area, which lies in an outer radius area over 70% or 80% of the radius.
  • the carriers may not be circular in the two aforementioned alternatives, but oblong oval or approximately rectangular. Then, the information for the widths or radii of the two or three areas applies accordingly, the percentages are then not based on the radius of a circular shape, but are based on the narrowest half width of the entire heater.
  • the largest area of the carrier is covered with heating elements.
  • it is covered by at least 10% or 20% of the radius to 100% of the radius, in particular to a maximum of 95%, with at least one heating element.
  • a distance of the heating elements or two adjacent turns of the heating elements may be in the range of a few mm, for example 2 mm to 5 mm or even 8 mm.
  • this distance is substantially equal for the entire heater.
  • an outermost turn of the heating device is not formed by the second heating element, but for example by the first heating element or a third. Furthermore, it can be provided that a second outermost turn of all heating elements or the heating device is formed by the second heating element. Thus, it is also the outermost turn of the second heating element.
  • the heating elements or the heating device may be provided that at most a third-innermost turn of the heating elements or the heating device is formed by the second heating element as its innermost turn.
  • it is only a fourth-innermost turn, so that no turn of the second heating element is provided around a center of the heater, but advantageously only the first heating element.
  • the second heating element is arranged substantially double parallel to each other on the carrier in so-called double turns. Between two double turns of the second heating element, in particular between the two outermost double turns of the second heating element, at least one turn, preferably at least one double turn, of another heating element or of the first heating element is provided. This ensures that no two double turns of the second heating element run directly next to one another, because otherwise an excessively large annular region of the heating device or on the support would be covered only by the second heating element and this could mean an undesirably high power concentration without over-temperature protection.
  • the second heating element is arranged only in double turns on the carrier. This can also apply to other heating elements. Between two double turns of the second heating element, two or four turns of another heating element, which may be the first heating element, but under certain circumstances also a third heating element, always run in an advantageous manner.
  • the heater may be formed as a two-circuit heater and have three heating elements, in which case advantageously also the three aforementioned areas are provided as a central region, intermediate region and outer region.
  • a first heating element may be provided above all in the central area and not in the outer area.
  • a third heating element can be provided, especially in the outer area and advantageously not in the central area.
  • a second heating element runs just as described above in all three areas.
  • the excess temperature fuse is a so-called rod controller with an elongated thermo-mechanical expansion element.
  • rod controller are known for example from the DE 3333645 A or DE 3423086 A .
  • a switch is triggered by the thermo-mechanical expansion element and thus the first heating element, under certain circumstances, the aforementioned third heating element, off.
  • the power of the second heating element at a mains voltage of 230 volts is a maximum of 1200 watts, preferably 1000 watts. Its area performance can advantageously be less than 2.5 W / cm 2 .
  • the second heating element is operated without the interposition of the excess temperature fuse and also without monitoring by the excess temperature fuse.
  • the second heating element operated alone without the overtemperature fuse.
  • the second heating element may be switched on as needed, but does not have to.
  • all heating elements of the heating device are operated, in particular in the case of a two-circuit heater in two-circuit operation.
  • the second heating element for a particularly large parboiling performance has the advantage that at too high a temperature the over-temperature fuse to protect a glass ceramic cooktop panel responds and a first and possibly a third heating element for safety reasons off.
  • the second heating element can continue to operate. Its area performance is relatively low due to the large distribution, which is advantageously just less than 2.5 W / cm 2 . If then the temperature has dropped below the cooktop panel again so far that the excess temperature fuse releases the first and the third heating element again or turns back on, they can work again in addition and with very high overall performance.
  • Fig. 1 is a carrier 10 for an electric heater 11 accordingly Fig. 2 shown, which is circular in shape with a peripheral support edge 10 a and one in the Fig. 2 centrally shown central support elevation 10b.
  • the flat surface of the carrier 10 within the carrier rim 10a is divided into three radius regions, namely a central region I, an intermediate region II and an outer region III.
  • the central region I has a radius r 1 and a width b 1 .
  • the intermediate region II extends with a width b 2 between the radii r 1 and r 2 .
  • the outer region III extends with a width of b 3 between the radii of r 2 and r 3 .
  • the radius r 1 has almost 50% of the total radius of the carrier 10 or within the carrier rim 10a.
  • the radius r 2 is about 75% and the radius r 3 almost 100% within the support edge 10 a.
  • the width b 1 of the central area I is thus slightly larger than that of the other areas II and III, wherein the area required for the support elevation 10b is taken into account.
  • a rod controller 13 is arranged with a switch housing 14 and a long sensor 15 on the carrier 10 and the heater 11.
  • the elongated straight sensor 15 extends to the support elevation 10b and is placed there in a known manner and optionally attached with a clamp.
  • a connection region 17 is provided with a plurality of terminal lugs or plug connections as electrical contacting to the heating elements.
  • the heating elements of the heating device 11 run on the carrier 10.
  • a first heating element 20 which runs in the inner two regions I and II, In particular, the three innermost turns in the central region I forms. It is connected to a terminal lug 17 ', which is connected to the rod controller 13 and the rod controller 13 is looped into its power supply. It is also on.
  • a second heating element 22 extends in three double turns.
  • the innermost double turn runs in the central region I, and indeed quasi embedded in the middle of the first heating element 20.
  • the middle double turn extends radially outward on the first heating element 20 adjacent in the intermediate region II.
  • the third and outermost double turn of the second heating element 22 extends relatively far outside on the support 10 in the outer region III. Radially outside thereof, only a single turn of a third heating element 24 is provided, which extends in the outer region III and in the transition to the intermediate region II.
  • the third heating element 24 here has only a double turn and the outermost single turn on. As described above for the first heating element 20, the third heating element 24 is connected via the terminal lug 17 'with looped rod controller 13 as an over-temperature fuse to a power supply.
  • connection region 17 It can be seen at the connection region 17 that the three heating elements 20, 22 and 24 can each be switched on or controlled separately.
  • the electrical connections to the second heating element 22 pass the rod regulator 13 or the corresponding connection lug 17 '.
  • the first heating element 20 In operation here is in Fig. 2 only the first heating element 20. Since the entire heater 11 is designed as a so-called two-circuit heater, the first heating element 20 forms in single-circuit operation, the first circle or the small diameter, the diameter can be considered here as a hotplate with about 140 mm , When operating as a single circuit according to Fig. 2 the heating power of the first heating element 20 at 230 volts is about 1200 watts. The second heating element 22 and the third heating element 24 are turned off in this case.
  • Fig. 3 is in itself the representation of Fig. 2 repeated.
  • the second heating element 22 is shown filled corrugated and the third heating element 24 is not marked for distinction.
  • all three heating elements 20, 22 and 24 are in operation.
  • the diameter is about 230 mm.
  • the total electrical power is then at a supply voltage of 230 volts 3200 watts, all three heating elements are therefore parallel connected.
  • the second heating element 22 and the third heating element 24 have a heating power of about 1000 watts each.
  • the second heating element 22 may be operated at a higher power without such over-temperature protection due to the wide-spread or exploded distribution. This can be increased overall in a desired operation with very high power or high parboiling power as a boost operation power generation. Furthermore, theoretically, due to the relatively low power of the second heating element, which is less than the above-mentioned 2.5 W / cm 2 in terms of its total heated surface, a low continuous power could be achieved per se. Operation with a large pot may be available. For this purpose, the second heating element would have to be advantageously controlled electronically.
  • the unprotected power of the second heating element 22 can also be switched out, in particular if the heating operation is not present, and a power of a maximum of 2200 watts remains.
  • a power controller or energy regulator for example, according to the DE 102008014805 A1 or DE 2625716 A , of 6% this results in 132 watts as a total output. Although this is relatively little, but may be sufficient for a holding operation at the hotplate in two-circuit operation with full area.
  • Fig. 5 is a circuit diagram for the heater 11 according to the invention together with the usual energy regulator as a power control device 25, as is known and especially with a power control device according to the DE 2625716 A together with additional switches or Aufsetzschalter 26 can be realized. It controls via the so-called duty cycle ED according to the DE 19736308 A1 the on and off times of the heating elements or the clock ratio the energy supply. Shown dashed lines is aGranetzschalter 26 which is additionally placed on such a dash-dotted line power control device 25 and is rotated by the same rotary shaft. In addition to power adjustment via the power controller 25, the override switch 26 may switch on or off the second heater 22 shown below.
  • the Fig. 6 shows the adjustment options for the heating device 11 according to the invention according to the inventive method. From the zero position at 0 ° or at OFF can to the left be rotated counterclockwise, resulting in the so-called single-circuit operation. In this case, only the first heating element 20 is operated and therefore this single-circuit operation is for the invention largely without interest.
  • the second heating element 22 is switched off at an angle greater than 45 ° via the Aufsetzschalter 26, so that it is just ever operated only at the maximum power.
  • a low power of 132 watts is present, which is advantageous for an aforementioned holding operation.
  • a heating device 111 according to the invention is shown with a carrier 110, wherein the surface of the carrier 110 is divided only into a central region I 'and an outer region II'.
  • the second heating element 22 of Fig. 2 and 3 could be in the central area I 'and the outside area II'.
  • a first heating element and possibly also a third heating element could be divided into the central area I 'and the outer area II'.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Food Science & Technology (AREA)
  • Control Of Resistance Heating (AREA)
EP14179435.4A 2013-08-16 2014-08-01 Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung Active EP2844029B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14179435T PL2844029T3 (pl) 2013-08-16 2014-08-01 Urządzenie grzewcze i sposób działania urządzenia grzewczego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013216290.1A DE102013216290B4 (de) 2013-08-16 2013-08-16 Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung

Publications (2)

Publication Number Publication Date
EP2844029A1 EP2844029A1 (de) 2015-03-04
EP2844029B1 true EP2844029B1 (de) 2018-10-03

Family

ID=51260702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14179435.4A Active EP2844029B1 (de) 2013-08-16 2014-08-01 Heizeinrichtung und Verfahren zum Betrieb einer Heizeinrichtung

Country Status (6)

Country Link
US (1) US9894716B2 (es)
EP (1) EP2844029B1 (es)
CN (1) CN104378858B (es)
DE (1) DE102013216290B4 (es)
ES (1) ES2702323T3 (es)
PL (1) PL2844029T3 (es)

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CN105113025A (zh) * 2015-09-10 2015-12-02 韦德科 索绪锅加热装置
US10959294B2 (en) * 2015-12-31 2021-03-23 Applied Materials, Inc. High temperature heater for processing chamber
DE102016224069A1 (de) * 2016-12-02 2018-06-07 E.G.O. Elektro-Gerätebau GmbH Kochgerät mit einer Kochplatte und einer Heizeinrichtung darunter
US10429079B2 (en) * 2017-02-21 2019-10-01 Zoppas Industries De Mexico S.A., De C.V. Electric stovetop heater unit with integrated temperature control
DE102017211123A1 (de) * 2017-06-30 2019-01-03 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Bearbeiten eines elektrischen Bauteils mit Schichtaufbau
CN109932930B (zh) * 2017-12-15 2021-07-20 佛山市顺德区美的电热电器制造有限公司 加热控制方法、装置、加热器具和计算机可读存储介质
KR102110410B1 (ko) 2018-08-21 2020-05-14 엘지전자 주식회사 전기 히터
KR102093766B1 (ko) 2018-08-21 2020-03-26 엘지전자 주식회사 전기 히터
CN109276123A (zh) * 2018-12-12 2019-01-29 珠海格力电器股份有限公司 电饭煲及电饭煲锅体
DE102019216020A1 (de) 2019-10-17 2021-04-22 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb einer Strahlungsheizeinrichtung und Kombination einer Strahlungsheizeinrichtung mit einer Drehschalteinrichtung

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Also Published As

Publication number Publication date
DE102013216290A1 (de) 2015-02-19
US20150048076A1 (en) 2015-02-19
DE102013216290B4 (de) 2015-09-03
PL2844029T3 (pl) 2019-03-29
CN104378858A (zh) 2015-02-25
CN104378858B (zh) 2019-09-20
ES2702323T3 (es) 2019-02-28
US9894716B2 (en) 2018-02-13
EP2844029A1 (de) 2015-03-04

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