WO2012144740A2 - Cuisinière électrique possédant un élément chauffant autorégulateur de type feuille et procédé de fabrication associé - Google Patents

Cuisinière électrique possédant un élément chauffant autorégulateur de type feuille et procédé de fabrication associé Download PDF

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Publication number
WO2012144740A2
WO2012144740A2 PCT/KR2012/002121 KR2012002121W WO2012144740A2 WO 2012144740 A2 WO2012144740 A2 WO 2012144740A2 KR 2012002121 W KR2012002121 W KR 2012002121W WO 2012144740 A2 WO2012144740 A2 WO 2012144740A2
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WIPO (PCT)
Prior art keywords
heating element
temperature
electric range
material component
self
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Ceased
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PCT/KR2012/002121
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English (en)
Korean (ko)
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WO2012144740A3 (fr
Inventor
김병철
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PNU Eco Energy Co Ltd
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PNU Eco Energy Co Ltd
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Publication of WO2012144740A2 publication Critical patent/WO2012144740A2/fr
Publication of WO2012144740A3 publication Critical patent/WO2012144740A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material

Definitions

  • the present invention relates to an electric range, and more particularly, it is possible to precisely control the temperature in a specific temperature range, the temperature self-regulating type that can reduce the power consumption by adjusting the heating range according to the size of the cooking vessel (SR) : Self-Regulation)
  • the present invention relates to an electric range using a planar heating element and a method of manufacturing the same.
  • the electric range is composed of a coil heating element using a metal material such as nichrome wire, tungsten, molybdenum, and the like in a predetermined area under the tempered glass.
  • the heating element is in the form of a coil
  • the structure of the heater product there are many restrictions on the implementation of the structure of the heater product, and a lot of time is required to raise and lower the temperature, resulting in a problem in that the energy conversion efficiency is worse and power consumption is increased.
  • the product due to the three-dimensional structure of the coil form, the product becomes bulky, heavy weight, and causes another problem that the consumption of the heat generating material increases.
  • the thick film-type heating part is coated by applying a paste in which nano-grade ceramics and metal materials are mixed on a glass substrate or a stainless substrate in Korea Utility Model Publication No. 20-0399652 (registered October 19, 2005).
  • the present invention discloses a hot plate having a thick film type heating element having excellent energy conversion efficiency and durability, and having a durable and compact structure and size by supplying electrical energy to the thick film type heating part and converting it into thermal energy.
  • the hot plate provided with the thick film-type heating element of the above-described registered utility model is not easy to precise temperature control, and even after rising to a constant boiling point temperature, there is a problem of excessive energy loss since it maintains the same power supply at the boiling temperature continuously. .
  • the present invention was created to solve the above problems, an object of the present invention is to provide an accurate temperature control in a specific temperature range, self-regulation (SR) heating element capable of self-control of power and temperature over time It is possible to maintain a uniform temperature by applying, and to provide an electric range and a method of manufacturing the same that can significantly reduce the power consumption.
  • SR self-regulation
  • Another object of the present invention is to provide an electric range capable of adjusting the heating area according to the size of the container.
  • the upper surface is open case;
  • a heat resistant substrate coupled to the upper surface of the case; Is disposed in contact with the lower portion of the heat-resistant substrate or spaced apart a predetermined distance, the paste is a mixture of the electrical resistance material component, the insulation binder component and the temperature control material component is cured to generate heat under the power supply, the temperature self-regulation function SR heating element (self-regulating heating element) to maintain a constant temperature of the predetermined region by performing;
  • An operation unit installed in the case to allow a user to adjust the heating temperature of the SR heating element; It is connected to the operation unit characterized in that it comprises a controller for controlling the heating temperature by controlling the power applied to the SR heating element.
  • the electrical resistance material component of the SR heating element is 50 to 75% by weight
  • the insulating binder component is 5 to 16% by weight
  • the temperature control material component is characterized in that 10 to 40% by weight. .
  • the method comprising the steps of preparing an SR heating element forming paste in which the electrical resistance material component, the insulation binder component and the temperature control material component are mixed; Applying the SR heating element-forming paste to a surface of a heat resistant substrate at a predetermined thickness; Provided is a method of manufacturing an electric range to which a temperature self-regulating planar heating element including the step of curing the SR heating element forming paste is provided.
  • the method comprising the steps of preparing an SR heating element forming paste in which the electrical resistance material component, the insulating binder component and the temperature control material component are mixed; Applying the SR heating element-forming paste to a surface of a heat resistant base plate at a predetermined thickness; Curing the paste for forming the SR heating element;
  • a method of manufacturing an electric range using a temperature self-regulating planar heating element including a step of installing a heat resistant substrate and a base plate such that the SR heating element is attached to the surface of the heat resistant substrate or has a predetermined distance therebetween.
  • the temperature of the SR heating element of the hot plate is kept constant while controlling the heating state in response to the surrounding temperature environment, there is an advantage of reducing power consumption.
  • the SR heating element when divided into a plurality of to generate power independently to generate heat, it is possible to change the heat generating area according to the size of the container, thereby preventing the waste of power consumption.
  • FIG. 1 is a perspective view of an electric range according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view illustrating main parts of the electric range of FIG. 1.
  • FIG. 3 is an enlarged cross-sectional view illustrating a structure of an SR heating element configured in the electric range of FIG. 1.
  • Figure 4 is a graph showing the temperature control performance according to the embodiment and the comparative example of the SR heating element of the electric range according to an embodiment of the present invention.
  • Figure 5 shows the power test results of the SR heating element of the electric range according to an embodiment of the present invention.
  • Figure 6 shows the impedance test results of the SR heating element of the electric range according to an embodiment of the present invention.
  • Figure 7 shows the results of the temperature change of the SR heating element of the electric range according to an embodiment of the present invention.
  • an electric range according to an embodiment of the present invention includes a case 10, a heat resistant substrate 21 coupled to an upper surface of the case 10, and a heat resistant substrate 21.
  • a hot plate 20 made of an SR heating element 22 which is applied to the lower surface and generates heat by electric energy supplied from the outside, and is installed in the case 10 so that a user may install the hot plate 20.
  • the control unit 30 is configured to control the operation of the SR heating element 22 of, and the controller 40 is connected to the operation unit 30 to control the operation of the SR heating element 22.
  • the SR heating element 22 has a ring-shaped second heating element (22) formed at a predetermined interval apart from the center of the first heating element (22a) and the first heating element (22a) in order to enable a variable range of heat generation ( 22b), and is divided into a ring-shaped third heating element 22c formed to be spaced apart from the second heating element 22b by a predetermined interval.
  • the case 10 is made of the same or similar configuration as the case that is built in a conventional electric range made of a heat insulating material or made of a heat insulating material so that heat inside is not transmitted to the outside.
  • the operation unit 30 is a temperature control knob 31 for controlling the heating temperature of the first, second, third heating elements 22a, 22b, 22c constituting the SR heating element 22, and the first, second, third A range adjusting knob 32 is provided to selectively control the heating or non-heating state of the heating elements 22a, 22b, 22c to adjust the heating range.
  • the operation unit 30 is configured by a knob (knob) method to turn by hand, it can be configured in a variety of known methods, such as a button or a touch panel differently.
  • the controller 40 includes a power supply device (not shown) connected to an external power source, and includes a first heating element 22a and a second heating element 22b and a third heating element 22c and an electric wire of the SR heating element 22. Are independently connected to each other, and selectively supply electric energy to the first, second and third heating elements 22a, 22b and 22c of the SR heating element 22 through the power supply device according to the operation of the operation unit 30.
  • the heat generation temperature and heat generation range of the 1,2,3 heating elements 22a, 22b, 22c are controlled. That is, when the user wants to heat the small container SC, the range adjusting knob 32 of the operation unit 30 is set to the first position, and the temperature adjusting knob 31 is operated to operate the first heating element 22a.
  • the second and third heating elements 22b and 22c do not generate heat, and electrical energy is supplied only to the first heating element 22a through the controller 40, and the first heating element 22a is set in a temperature range.
  • the vessel SC is heated while maintaining.
  • the range adjusting knob 32 is set to the third position and the temperature adjusting knob 31 is used.
  • the heat generating temperature is set, the electrical energy is supplied to all of the first, second, and third heating elements 22a, 22b, and 22c through the controller 40, and the first, second, and third heating elements 22a, 22b, and 22c are supplied. Generates heat while maintaining the set temperature.
  • the heat resistant substrate 21 of the hot plate 20 may be configured using a metal such as ceramic, tempered glass, stainless steel, or the like. On the surface of the heat resistant substrate 21, a display line indicating a heat generating region may be displayed on a portion corresponding to the SR heat generator 22.
  • the SR heating element 22 receives heat from the power supply device of the controller 40 to generate heat.
  • Such SR heating element 22 is to perform a temperature self-regulation function, so that the temperature is kept constant in the set temperature range while adjusting the heating state in response to the ambient temperature environment. That is, the SR heating element 22 continuously maintains the set temperature of the predetermined region temperature around the SR heating element 22, such that the predetermined region temperature around the SR heating element 22 is lower than a temperature value set due to external influence or the like.
  • the predetermined area temperature around the SR heating element 22 quickly reaches the set temperature, and when the predetermined area temperature around the SR heating element 22 becomes high, the predetermined area around the SR heating element 22 is turned off. Allow the temperature to lower.
  • the heat generating state of the SR heating element 22 is adjusted according to the difference between the predetermined region temperature around the SR heating element 22 and the set temperature, and as the difference between the predetermined region temperature and the set temperature around the SR heating element 22 increases, the temperature is increased. It has the ability to generate heat and allow rapid temperature rise.
  • the self-regulation function of the SR heating element 22 is a film or coating film of a predetermined thickness made by curing a paste in which an electric resistance material component, an insulation binder component, and a temperature control material component are mixed. Is implemented by The SR heating element 22 may be directly attached or applied to the lower surface of the heat resistant substrate 21, but may be attached to the lower portion of the heat resistant substrate 21 after being applied on a heat resistant base plate such as metal or at a predetermined distance. It may be installed spaced apart.
  • the SR heating element 22 is divided into three parts, that is, the first heating element 22a, the second heating element, and the third heating element 22c, each of which is independently connected to the controller 40.
  • Power supply but may alternatively be composed of a single body or divided into two or more parts separated from each other.
  • a conduction path 23 is formed on a surface of the SR heating element 22, and a power line 41 of a power supply device of the controller 40 is located in the conduction path 23. Then, the SR heating element 22 receives the power through the conductive path 23 to generate heat in the range of approximately 50 ⁇ 450 °C.
  • the SR heating element 22 is formed by hardening a paste in which an electric resistance material component, an insulating binder component, and a control material component are mixed. Such SR heating element 22 may be formed by coating by screen print.
  • the SR heating element 22 may be heat-treated in a conveyor furnace that emits infrared rays for 8 to 12 minutes at 130 to 160 ° C., and then heat-treated at 180 ° C. for 20 minutes.
  • the conductive path 23 is formed on the surface of the SR heating element 22 so that the power line 41 of the power supply device of the controller 40 is positioned in the conductive path 23 to receive power and generate heat.
  • SR heating element 22 is configured to have 50 to 75% by weight of the electrical resistance material component, 5 to 16% by weight of the insulating binder component, 10 to 40% by weight of the temperature control material component do.
  • the content of the electrical resistance material component is less than 50% by weight is not preferable to realize the heat generating performance of the heating element, when it exceeds 75% by weight is not preferable because the stability of the temperature control is lowered.
  • the content of the insulating binder component is less than 5% by weight, it is not preferable because the bonding strength of the composition is lowered.
  • the content of the insulating binder component is more than 16% by weight, the component content of other compositions such as the resistance component is low, so that the exothermic performance is lowered. I can't.
  • the content of the temperature control material component is less than 10% by weight, it is not desirable to be insufficient to realize the function of adjusting to a specific temperature, and when the content of the temperature control material exceeds 40% by weight, the content of other components such as the resistance component is too small. Not preferred.
  • the SR heating element 22 forms a paste in a powder mixture state in which the electrical resistance material component includes nickel (Ni) and aluminum (Al).
  • the electrical resistivity component is composed of nickel 50 to 60% by weight of the electrical resistance material component, aluminum 40 to 50% by weight of the electrical resistive material component, nickel 53% by weight of the electrical resistive material component, aluminum It is preferably configured to have 47% by weight of this electrical resistive substance component.
  • the electrical resistance material component of the SR heating element 22 may include molybdenum (Mo), boron (B), silicon (Si), and the like as corrective ingredients.
  • Mo molybdenum
  • B boron
  • Si silicon
  • the molybdenum is 0.05 to 0.2 at% of the paste
  • the boron is to be composed of 0.005 to 0.02 at% of the paste
  • the molybdenum is preferably composed of 0.1 at% of the paste
  • the boron is composed of 0.01 at% of the paste.
  • the electrical resistive substance is added to nickel and aluminum by adding corrective ingredients such as molybdenum (Mo), boron (B), and silicon (Si) for 4 to 12 hours (preferably 6- 10 hours) in a closed space of a planetary ball mill.
  • Mo molybdenum
  • B boron
  • Si silicon
  • the dispersion value between particles constituting the electric resistance material component of the SR heating element 22 is formed in a range of 0.1 to 10 ⁇ m, more preferably, the dispersion value between particles in a range of 0.5 to 5 ⁇ m.
  • the specific surface area is preferably 200 m 2 / g or less.
  • the dispersion value between the particles constituting the electrical resistance material component is linked to the temperature coefficient of resistance (TCR) of the SR heating element 22, and the resistance temperature coefficient of the SR heating element 22 is the electrical resistance material component. It is controlled by the dispersion value between particles.
  • the dispersion value between the particles constituting the electrical resistance material component is controlled by the time the electrical resistance material component stays in the closed space of the planetary ball mill.
  • the insulating binder component of the SR heating element 22 may be selected from a polyester, an epoxy resin, an epoxy-phenol lacquer composition, and the like.
  • the insulating binder component is composed of 10 to 16% by weight of the paste
  • nanostructured silicon (Si) powder which is a stabilizing additive, may be added to the insulating binder component.
  • Si may be composed of 0.3 to 0.7 at% of the paste, preferably 0.4 to 0.6 at%.
  • Such silicon shortens the formation time of the structure of the SR heating element 22 when manufacturing the SR heating element 22, and allows the resistance temperature coefficient of the SR heating element 22 that is set and implemented to be maintained for a long time.
  • the SR heating element 22 serves to adjust to about 50 ⁇ 450 °C in the energized state through the temperature control material component.
  • a specific material must be included as an appropriate temperature control material component to prevent overheating of the heating element and to contribute to the proper power consumption.
  • the temperature control material of the SR heating element 22 forms a paste in a lead-free-glass powder mixture.
  • the glass powder mixture is formed from a group consisting of SiO2, BaO, B2O3, and Al2O3. It is preferred that it is at least one oxide selected.
  • the temperature control material component of the SR heating element 22 may be manufactured in a closed space of a planetary ball mill for 4-12 hours (preferably 6-10 hours) without oxygen inflow.
  • the temperature control material component of the SR heating element 22 is such that the dispersion (dispersion) value between particles is formed in the range of 0.05 to 2 ⁇ m, preferably to form the dispersion value between particles in the range of 0.1 to 1.0 ⁇ m .
  • the dispersion value between particles constituting the thermostat component is controlled by the time that the thermostat component stays in the closed space of the planetary ball mill.
  • a corrective ingredient including ZnO, Al, TiO2, Bi2O3BaTiO, etc. may be added. (discretisation) can be formed in the range of 0.05 to 0.4 ⁇ m, preferably to be formed in the range of 0.1 to 0.3 ⁇ m.
  • the temperature control material component of the SR heating element 22 has a mixture including niobium (Nb), antimony (Sb), yttrium (Y), lanthanum (La), and the like as a donor. Such donors are added to obtain high volume conductivity.
  • SR heating element 22 according to an embodiment of the present invention configured as described above has a resistance value of 0.05 to 1.9 ⁇ / ⁇ (preferably 0.09 to 0.9 ⁇ / ⁇ ), SR according to an embodiment of the present invention
  • the heating element 22 changes the resistance value of the SR heating element 22 by adjusting the weight ratio of the electrical resistance material component, the insulation binder component, and the temperature control material component.
  • the SR heating element 22 according to the embodiment of the present invention configured as described above is a resistance thermometer of 500 to 50 ⁇ 10 -4 / °C (preferably 560 ⁇ 10 -6 to 40 ⁇ 10 -4 / °C) It has a number (TCR), the SR heating element 22 according to the embodiment of the present invention changes the resistance temperature coefficient of the SR heating element 22 by adjusting the weight ratio of the electrical resistance material component, insulating binder component, temperature control material component Let's go.
  • the SR heating element (22) made up of components such as the epoxy resin 7g, nickel-aluminum (Ni-53%, Al- 47%) 70g, SiO 2 -BaO-B 2 O 3 -Al 23 g of 2 O 3 was dispersed in 200 g of ethanol, premixed and stirred at high speed to prepare SR heating element 22 (Example 1) of the present invention, and 20 g of epoxy phenol lacquer resin, NiAl [(Ni-53%, Al 60g of -47%) (45wt%)]-B (5wt%)-Mo (30wt%)-Si (20wt%) was dispersed in 200g of ethanol, premixed and stirred at high speed to prepare the planar heating element of Comparative Example 1. Next, a power test, an impedance, and a temperature control test were performed for Example 1 and Comparative Example 1, and the results are shown in FIGS. 4 to 7.
  • Figure 4 is a graph showing the temperature control performance according to Example 1 and Comparative Example 1, line 1 shows a temperature increase curve according to Comparative Example 1, line 2 of the SR heating element 22 according to the present invention It is shown that the temperature increase, the SR heating element 22 (Example 1) of the present invention can be seen that the resistance value increases rapidly when the temperature is above a certain value.
  • Example 1 the resistance value (impedance) increases with time, and thus the power usage decreases.
  • Comparative Example 1 the impedance is almost constant and the power consumption is almost constant. Therefore, the SR heating element 22 of the present invention can increase the resistance value with time to reduce the power consumption, and the power and temperature self-regulation with time due to the increase in the resistance value (material characteristics). You can see that this is possible.
  • the SR heating element 22 maintains a constant temperature while controlling the heat generation state in response to an ambient temperature environment, there is an advantage of reducing power consumption.
  • the heat generating area may be changed according to the size of the container, thereby preventing the waste of power consumption.
  • the present invention can be usefully applied to a cooking appliance for cooking food by heating of a heating element such as an electric range.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Surface Heating Bodies (AREA)
  • Central Heating Systems (AREA)

Abstract

La présente invention concerne une cuisinière électrique qui comporte un élément chauffant autorégulateur de type feuille, la température pouvant être commandée de façon précise au sein d'une plage particulière de températures et l'utilisation électrique étant réduite en raison d'une faible perte thermique. La cuisinière électrique selon la présente invention comprend : une caisse qui comporte une surface supérieure ouverte ; un panneau thermorésistant joint à la surface supérieure de la caisse ; un élément chauffant autorégulateur (élément chauffant SR, « Self-Regulating »), qui est connecté sous le panneau résistant ou est disposé avec une distance prédéterminée à partir dudit panneau thermorésistant, est formé à partir d'un mélange de pâte durci d'un matériau à résistance électrique, d'un liant d'isolation et d'un matériau de régulation de température, génère de la chaleur avec de l'électricité fournie, et autorégule la température pour que la température soit maintenue uniformément sein d'une plage définie ; une partie de commande, disposée sur la caisse, pour permettre à un utilisateur de commander la température de la chaleur générée par l'élément chauffant SR ; et un dispositif de commande, connecté à la partie de commande, pour commander la température de la chaleur générée en commandant l'électricité fournie à l'élément chauffant SR.
PCT/KR2012/002121 2011-04-20 2012-03-23 Cuisinière électrique possédant un élément chauffant autorégulateur de type feuille et procédé de fabrication associé Ceased WO2012144740A2 (fr)

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Application Number Priority Date Filing Date Title
KR10-2011-0036820 2011-04-20
KR1020110036820A KR20120119072A (ko) 2011-04-20 2011-04-20 온도 자가조절형 면상발열체를 적용한 전기레인지 및 그 제조방법

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WO2012144740A2 true WO2012144740A2 (fr) 2012-10-26
WO2012144740A3 WO2012144740A3 (fr) 2013-01-03

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WO2017007056A1 (fr) * 2015-07-03 2017-01-12 주식회사 금영 Appareil de chauffage par convection utilisant un élément chauffant planaire
IT201600074867A1 (it) * 2016-07-18 2018-01-18 E Wenco S R L Dispositivo di riscaldamento, uso e kit
CN115665905A (zh) * 2022-11-28 2023-01-31 深圳市金合联技术股份有限公司 一种发热板及其制造方法

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KR102027450B1 (ko) * 2013-02-14 2019-10-01 부산대학교 산학협력단 다중 온도 자가조절형 면상발열체
KR102027461B1 (ko) * 2013-02-14 2019-11-04 부산대학교 산학협력단 다중 온도 자가조절형 면상발열체를 이용한 식탁
KR102027457B1 (ko) * 2013-02-14 2019-10-01 부산대학교 산학협력단 다중 온도 자가조절형 면상발열체를 이용한 전기레인지
KR102254514B1 (ko) * 2019-11-18 2021-05-21 (주)바이오니아 발열도료를 이용한 전기그릴

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AU2003201228A1 (en) * 2003-01-02 2004-07-29 Genadiy A. Govor Monolithic self-regulating metal-ceramic heater
KR101057709B1 (ko) * 2005-05-25 2011-08-18 주식회사 대우일렉트로닉스 발열판의 발열범위를 조절하는 전기렌지
GB0700079D0 (en) * 2007-01-04 2007-02-07 Boardman Jeffrey A method of producing electrical resistance elements whihc have self-regulating power output characteristics by virtue of their configuration and the material
KR20090128072A (ko) * 2008-06-10 2009-12-15 신화오플라주식회사 용기 감지를 위한 제어부를 포함하는 전기 레인지 및 그전력 차단 방법
KR20100011873U (ko) * 2009-05-28 2010-12-08 유승달 원형 세라믹 히터를 구비한 전기 레인지

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Publication number Priority date Publication date Assignee Title
CN103604142A (zh) * 2013-11-18 2014-02-26 美的集团股份有限公司 电磁炉
CN103604142B (zh) * 2013-11-18 2016-06-29 美的集团股份有限公司 电磁炉
WO2017007056A1 (fr) * 2015-07-03 2017-01-12 주식회사 금영 Appareil de chauffage par convection utilisant un élément chauffant planaire
IT201600074867A1 (it) * 2016-07-18 2018-01-18 E Wenco S R L Dispositivo di riscaldamento, uso e kit
WO2018015856A3 (fr) * 2016-07-18 2018-03-01 E-Wenco S.R.L. Dispositif de chauffage, son utilisation et kit
CN115665905A (zh) * 2022-11-28 2023-01-31 深圳市金合联技术股份有限公司 一种发热板及其制造方法

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