CN110708782A - Method for operating an induction hob and induction hob - Google Patents
Method for operating an induction hob and induction hob Download PDFInfo
- Publication number
- CN110708782A CN110708782A CN201910604147.4A CN201910604147A CN110708782A CN 110708782 A CN110708782 A CN 110708782A CN 201910604147 A CN201910604147 A CN 201910604147A CN 110708782 A CN110708782 A CN 110708782A
- Authority
- CN
- China
- Prior art keywords
- electrically conductive
- glass
- conductive layer
- ceramic element
- induction
- 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.)
- Pending
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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1227—Cooking devices induction cooking plates or the like and devices to be used in combination with them for wok pans and wok pans supports for induction cooking plates
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
Abstract
The present invention relates to a method for operating an induction hob and an induction hob, the induction hob comprising a glass or glass ceramic element (2) and an induction coil (3) to provide a heating zone (4) at said glass or glass ceramic element (2), wherein said glass or glass ceramic element (2) comprises at its lower surface an electrically conductive layer (5) or a set of electrically conductive layers, said electrically conductive layer (5) or said set of electrically conductive layers being made of an electrically conductive material, wherein said glass or glass ceramic element (2) comprises a concave portion (2.1) or recess, said induction coil (3) being arranged below said concave portion (2.1) or recess.
Description
Technical Field
The present invention generally relates to the field of induction hobs.
Background
Induction hobs for preparing food are well known in the prior art. Induction cooktops typically include at least one induction coil placed below the glass or glass-ceramic element to provide heat to the cookware.
Induction hobs comprising means for reducing the electrical charge of cookware placed over a glass or glass-ceramic element are known.
German patent application DE 102004053963 a1 discloses an induction heating furnace. The glass-ceramic plate of the furnace comprises an electrically conductive layer for reducing the electrical charge of the cookware.
Disclosure of Invention
It is an object of embodiments of the present invention to provide an induction hob for convex cookware, comprising shielding capabilities for reducing the electrical charge of said cookware. This object is solved by features according to embodiments of the present invention. Preferred embodiments are given in the alternative embodiments according to the invention. The embodiments of the present invention can be freely combined with each other if not explicitly stated otherwise.
According to one aspect, the present invention relates to an induction hob. The induction hob comprises a glass or glass-ceramic element and an induction coil to provide a heating zone at said glass or glass-ceramic element. The glass or glass-ceramic element comprises at its lower surface an electrically conductive layer or a set of electrically conductive layers, which are made of an electrically conductive material. The glass or glass-ceramic element comprises a concave portion or recess, the induction coil being arranged below the concave portion or recess.
The induction hob is advantageous in that the electrically conductive layer provided at the lower side of the glass or glass-ceramic element significantly reduces the charge of cookware comprising a convex lower portion to be received in the concave portion of the glass or glass-ceramic element.
According to an embodiment, the electrically conductive layer or the set of electrically conductive layers is arranged directly at the lower surface of the glass or glass-ceramic element. Thus, in other words, there is no gap between the lower surface of the glass or glass-ceramic element and the conductive layer or set of conductive layers. The shielding effect is thus significantly improved.
According to an embodiment, the conductive layer or a group of conductive layers comprises a central portion which is not covered by the conductive material. Thus reducing the coil temperature during the cooking process.
According to an embodiment, the set of conductive layers comprises a plurality of conductive layer portions associated with a single induction coil to provide electromagnetic shielding to the induction coil. Adjacent conductive layer portions may be at least partially separated by one or more gaps at which no conductive material is provided. Thus improving the coupling efficiency and reducing the amount of conductive material.
According to an embodiment, the conductive layer comprises a ring-like shape. The conductive ring layer may be centered on an induction coil disposed below the conductive layer. Thus, an integrally formed conductive layer with high shielding capability is obtained.
According to an embodiment, the set of conductive layers comprises a plurality of conductive layer portions, wherein a longitudinal axis of the conductive layer portions is arranged radially with respect to a center of an induction coil associated with the set of conductive layers. The segmented conductive layer can be manufactured with reduced technical effort.
According to an embodiment, the set of electrically conductive layers comprises a plurality of concentrically arranged annular portions, wherein adjacent annular portions are separated from each other by an annular region or an annular segment-shaped region not covered by the electrically conductive material. The segmented conductive layer comprising a plurality of concentric rings provides effective shielding capability.
According to an embodiment, the electrically conductive layer or the set of electrically conductive layers is coupled to a ground potential or ground line of the induction hob, in particular to a chassis of the induction hob. Preferably, the bottom plate is provided at its upper part with a circular cut-out in which the glass or glass-ceramic element is inserted. The conductive layer or set of conductive layers is preferably coupled to ground by providing an electrical connection between the conductive layer or set of conductive layers and a portion of the chassis arranged immediately adjacent to the circular cutout.
According to an embodiment, said electrical coupling between said conductive layer or set of conductive layers and a ground potential or ground line of the induction hob is performed by means of a conductive bracket. The bracket provides an electrical coupling between a conductive layer or a set of conductive layers and a portion of the chassis arranged proximate to the circular cutout in which the glass or glass-ceramic element is inserted. Preferably, the metal bracket is also used for mechanically coupling the glass or glass-ceramic element with the chassis.
According to an embodiment, the set of electrically conductive layers are coupled to each other by means of a bridge portion arranged at a lower surface of the glass or glass-ceramic element and made of an electrically conductive material. By means of the bridging parts, a plurality of conductive layer parts can be electrically coupled. Thus, when one conductive layer portion is coupled to ground, all conductive layer portions are grounded via the bridge portion.
According to an embodiment, the electrically conductive material arranged at the lower surface of the glass or glass-ceramic element is an electrically conductive paint. The conductive coating may be digitally printed (e.g., ink jet printed), sprayed, or sputtered onto the lower surface.
According to an embodiment, the electrically conductive material comprises or comprises graphite or silver. According to other embodiments, any conductive material may be used, such as copper, aluminum, and the like.
According to an embodiment, the electrically conductive layer or the set of electrically conductive layers extends at least partially at an inclined side laterally bounding the concave portion or recess of the glass or glass-ceramic element. In more detail, the conductive layer or the set of conductive layers is/are arranged at a side portion which is/are located next to an edge of the chassis in which the cut-out of the glass or glass-ceramic element is comprised. Thus, an electrical coupling between the conductive layer or the set of conductive layers and the chassis can be obtained with reduced effort.
According to an embodiment, the conductive layer or the set of conductive layers is spatially associated with an area covered by the induction coil, and an outer edge of the conductive layer or the set of conductive layers is adapted to the shape of the induction coil and surrounds the outer edge of the induction coil at a radial distance. This arrangement of the conductive layer or the set of conductive layers achieves a sufficient shielding effect with reduced technical effort.
According to another aspect, the invention relates to a method for reducing the charge of a cookware arranged at an induction hob. The induction hob comprises a glass or glass ceramic element and an induction coil. Applying a conductive layer or set of conductive layers to the lower surface of the glass or glass-ceramic element, the conductive layer or set of conductive layers being made of a conductive material. Reducing the electric charge by the conductive layer or a set of conductive layers applied to the concave portion of the glass or glass-ceramic element, the induction coil being arranged below the concave portion of the glass or glass-ceramic element.
The term "substantially" or "approximately" as used herein refers to deviations of up to +/-10%, preferably up to +/-5%, from the exact value and/or from a variation that is not functionally significant.
Drawings
The various aspects of the invention, including its specific features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:
FIG. 1 shows an example block diagram of an induction hob;
fig. 2 shows a top view of a conductive layer comprising a plurality of conductive layer portions in the form of circular segments;
FIG. 3 shows a top view of an annular conductive layer; and
fig. 4 shows a top view of a conductive layer comprising a plurality of conductive layer portions in the form of concentric rings of different sizes.
Detailed Description
The present invention will now be described more fully with reference to the accompanying drawings, in which example embodiments are shown. However, the present invention should not be construed as being limited to the embodiments set forth herein. Throughout the following description, like reference numerals are used to denote like elements, components, items or features where applicable.
Fig. 1 discloses a schematic view of an induction hob 1. The induction hob 1 comprises a chassis 1.1, hereinafter also referred to as housing. At the upper side of the outer chassis 1.1 a glass ceramic element 2 is arranged to provide a heating zone 4. One or more induction coils 3 are arranged below the glass-ceramic element 2. The induction coil 3 is electrically coupled with a power circuit 8 that supplies high-frequency power to the induction coil 3 to provide heat at the cooker 7. In more detail, the power circuit 8 is adapted to provide power to a resonant circuit in which the induction coil 3 is included and which is electrically and/or magnetically coupled with the cookware 7. To generate the electrical power, the power circuit 8 comprises one or more switching elements. The switching elements may be, for example, any constructive technology IGBTs and transistors.
As shown in fig. 1, in the region of the heating zone 4, the glass ceramic element 2 comprises at least partially a concave portion, thereby forming an upwardly open recess. The recess is adapted to receive a part of a cooking appliance 7 comprising a convex lower part. The cooker 7 may be, for example, a wok or a wok-like pan.
In order to obtain an effective induction heating effect, the shape of the induction coil 3 corresponds to the shape of the glass-ceramic element 2. In other words, the induction coil 3 may also comprise a concave shape, which is adapted to the concave shape of the glass-ceramic element 2.
In order to avoid or reduce the electrical charge of the cookware 7 during induction heating, the glass-ceramic element 2 comprises an electrically conductive layer 5. The term "conductive layer" may refer to an integrally formed, continuous layer or a set of conductive layers separated from each other or interconnected by a bridging portion.
The conductive layer 5 is arranged at the lower surface 2.2 of the glass-ceramic element 2, in particular at the lower surface 2.2 of the concave portion 2.1 of the glass-ceramic element 2. In more detail, the electrically conductive layer 5 is directly attached to said lower surface 2.2 of the glass-ceramic element 2.
The conductive layer 5 comprises a conductive material. The material may be applied as a coating to the glass-ceramic element 2, for example by spraying, other printing techniques or heat transfer techniques. According to other embodiments, the conductive material may be applied by a sputtering process or by adhering a metal foil to the glass-ceramic element 2.
To achieve the shielding effect, the conductive layer 5 is electrically coupled to ground (earth potential). The grounding may be achieved by coupling the conductive layer 5 to a ground line or a ground line.
In the present embodiment, said electrical connection between the conductive layer 5 and ground is realized by means of a support 6, in particular a conductive support 6 (e.g. a metal support). The bracket 6 may be arranged between the glass ceramic element 2 and the chassis 1.1 of the induction hob 1. In more detail, the bracket 6 may be arranged at the lower side of the glass-ceramic element 2, and the bracket 6 may additionally provide fixation of the glass-ceramic element 2 at the chassis 1.1. Due to the coupling of the chassis 1.1 to ground, the conductive layer 5 is connected to ground via said bracket 6 and said chassis 1.1. It is worth mentioning, however, that other possibilities also exist for coupling the conductive layer 5 with ground.
As shown in fig. 1, the base plate 1.1 or the grounded base plate partially surrounds the glass-ceramic element 2. In the present embodiment, the glass ceramic element 2 is included in a recess or cut-out provided in the upper part 1.1.1 of the chassis 1.1. In more detail, the bottom plate 1.1 may comprise an upper portion 1.1.1 which is not integrally formed with the glass-ceramic element 2. For example, the upper portion may be made of stainless steel. The upper part 1.1.1 comprises a recess or cut-out in which the glass-ceramic element 2 is received. At least a lower part of the upper part 1.1.1 may be electrically conductive and grounded, so that the conductive layer 5 can be grounded via said bracket 6.
The area at which said conductive layer 5 is arranged is substantially limited to the area below which the induction coil 3 is arranged. In more detail, the conductive layer 5 at least partially overlaps and extends transversely beyond the cross-sectional area of the induction coil 3.
The conductive layer 5 is spatially associated with the cross-sectional area of the induction coil 3. In more detail, said conductive layer 5 comprises an outer edge 5.4, wherein said outer edge 5.4 is adapted to the cross-sectional shape of the induction coil 3 and said outer edge 5.4 at least partly surrounds the outer edge of the induction coil 3 at a radial distance r. Thereby a well defined conductive layer 5 is provided, which conductive layer 5 provides sufficient shielding for the cookware 7 and can be manufactured at reasonable cost.
As shown in fig. 1, the conductive layer 5 is provided at one or more side portions 2.3 of the glass ceramic element 2, and the side portions 2.3 may be inclined with respect to the horizontal direction and the tangential direction at the lowest portion of the concave portion 2.1, respectively. However, in other embodiments, the conductive layer 5 is not provided at the central portion of the glass ceramic element 2 (which is the lowest portion of the concave portion 2.1). Thus, in other words, the conductive layer 5 may comprise at least a gap in the area directly above the center 3.1 of the induction coil 3.
Fig. 2 to 4 show different configurations of the conductive layer 5. The outer edge of the induction coil 3 is indicated in the figure by means of a dashed circle.
In fig. 3, the conductive layer 5 is integrally formed and includes a ring shape having a central gap.
The construction in fig. 2 and 4 comprises a plurality of sets of conductive layers, i.e. a plurality of conductive layer portions 5.2 associated with a single induction coil 3.
The embodiment according to fig. 2 comprises a plurality of conductive layer portions 5.2 comprising the shape of circular segments. However, the conductive layer portion 5.2 may also have another shape, for example a strip-like shape. The longitudinal axis of the conductive layer part 5.2 may be arranged radially with respect to the center 3.1 of the induction coil 3.
The conductive layer portion 5.2 according to fig. 4 comprises a ring-like shape and is arranged concentrically with respect to the center 3.1 of the induction coil 3. Due to the different radii of the annular conductive layer parts 5.2, the conductive layer parts 5.2 are at least partially separated from each other by a gap also having a ring-like or ring segment-like shape.
As shown in fig. 4, the conductive layer parts 5.2 may be coupled by a bridge so that the conductive layer parts 5.2 are electrically coupled to each other. Thus, by connecting one conductive layer part 5.2 to ground, all other conductive layer parts 5.2 are also grounded.
It is worth mentioning that the design of the conductive layer 5 or the conductive layer part 5.2 is not limited to the shown embodiment. In contrast, many modifications are possible which are also covered by the claimed invention.
The thickness and the resistance of the conductive layer may be selected according to given requirements, in particular based on the selected conductive material.
It should be noted that the description and drawings merely illustrate the principles of the proposed invention. Although not explicitly described or shown herein, those skilled in the art will be able to implement various arrangements that embody the principles of the invention.
List of reference numerals
1 Induction cooker
1.1 Chassis/Shell
1.1.1 Upper part
2 glass/glass ceramic element
2.1 concave part/recess
2.2 lower surface
2.3 side part
3 Induction coil
3.1 center of induction coil
4 heating zone
5 conductive layer
5.1 center part
5.2 part of the conductive layer
5.3 bridge parts
5.4 outer edge
6 support
7 cooker
8 power circuit
r radial distance
Claims (15)
1. An induction hob, comprising: a glass or glass-ceramic element (2) and an induction coil (3) to provide a heating zone (4) at the glass or glass-ceramic element (2), wherein the glass or glass-ceramic element (2) comprises at its lower surface an electrically conductive layer (5) or a set of electrically conductive layers, the electrically conductive layer (5) or the set of electrically conductive layers being made of an electrically conductive material, wherein the glass or glass-ceramic element (2) comprises a concave portion (2.1) or recess, the induction coil (3) being arranged below the concave portion (2.1) or recess.
2. Induction hob according to claim 1, wherein the electrically conductive layer (5) or the set of electrically conductive layers is arranged directly at the lower surface of the glass or glass-ceramic element (2).
3. Induction hob according to claim 1 or 2, wherein the electrically conductive layer (5) or the set of electrically conductive layers comprises a central portion (5.1) which is not covered by the electrically conductive material.
4. Induction hob according to any one of the preceding claims, wherein the set of electrically conductive layers comprises a plurality of electrically conductive layer portions (5.2), the electrically conductive layer portions (5.2) being associated with an induction coil (3), in particular with a single induction coil, to provide electromagnetic shielding to the induction coil (3).
5. Induction hob according to any one of the claims 1 to 3, wherein the electrically conductive layer (5) comprises a ring-like shape.
6. Induction hob according to any one of claims 1 to 4, wherein the set of electrically conductive layers comprises a plurality of electrically conductive layer portions (5.2), wherein a longitudinal axis of the electrically conductive layer portions (5.2) is arranged radially with respect to a center (3.1) of the induction coil (3) associated with the set of electrically conductive layers.
7. The induction hob according to any one of the claims 1 to 4, wherein the set of electrically conductive layers comprises a plurality of concentrically arranged rings, wherein adjacent rings are separated from each other by a ring-shaped area or a ring-segment-shaped area not covered by the electrically conductive material.
8. Induction hob according to any one of the preceding claims, wherein the electrically conductive layer (5) or the set of electrically conductive layers is coupled to a ground potential of the induction hob (1), in particular to a chassis (1.1) of the induction hob (1).
9. Induction hob according to claim 8, wherein the electrical coupling between the electrically conductive layer (5) or the set of electrically conductive layers and a ground potential of the induction hob (1) is performed by means of electrically conductive brackets (6).
10. Induction hob according to any one of the preceding claims, wherein the set of electrically conductive layers are coupled to each other by means of a bridge (5.3) arranged at the lower surface (2.2) of the glass or glass-ceramic element (2) and made of an electrically conductive material.
11. Induction hob according to any one of the preceding claims, wherein the electrically conductive material arranged at the lower surface (2.2) of the glass or glass-ceramic element (2) is an electrically conductive paint.
12. Induction hob according to any one of the preceding claims, wherein the electrically conductive material comprises or comprises graphite, silver or copper.
13. Induction hob according to any one of the preceding claims, wherein the electrically conductive layer (5) or the set of electrically conductive layers extends at least partially at an inclined side (2.3), the inclined side (2.3) laterally limiting the concave portion (2.1) or recess of the glass or glass-ceramic element (2).
14. Induction hob according to any one of the preceding claims, wherein the conductive layer (5) or the set of conductive layers is spatially associated with an area covered by the induction coil (3) and an outer edge (5.4) of the conductive layer (5) or the set of conductive layers is adapted to the shape of the induction coil (3) and surrounds the outer edge of the induction coil (3) at a radial distance (r).
15. Method for reducing the electrical charge of a cookware (7) arranged at an induction hob (1), said induction hob (1) comprising a glass or glass-ceramic element (2) and an induction coil (3), wherein an electrically conductive layer (5) or a set of electrically conductive layers is applied to a lower surface (2.2) of said glass or glass-ceramic element (2), said electrically conductive layer (5) or set of electrically conductive layers being made of an electrically conductive material, wherein said electrical charge is reduced by said electrically conductive layer (5) or said set of electrically conductive layers being applied to a concave part (5.2) of said glass or glass-ceramic element (2), said induction coil (3) being arranged below said concave part of said glass or glass-ceramic element (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18182343.6 | 2018-07-09 | ||
| EP18182343.6A EP3595408A1 (en) | 2018-07-09 | 2018-07-09 | Method for operating an induction hob and induction hob |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110708782A true CN110708782A (en) | 2020-01-17 |
Family
ID=62904302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910604147.4A Pending CN110708782A (en) | 2018-07-09 | 2019-07-05 | Method for operating an induction hob and induction hob |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3595408A1 (en) |
| CN (1) | CN110708782A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2859013A1 (en) * | 2003-08-07 | 2005-02-25 | Albert Thomann | Wok heating device, has induction coil supported by shell made up of insulating material such as deformable thermoplastic material, where shell is made in form of cap adapted to shape of glass-ceramic cooking surface |
| DE102004053963A1 (en) * | 2004-11-09 | 2006-05-11 | Schott Ag | Cooking panel, has induction coil arranged below cooking zone, and for inductively heating cookware that strands on glass or glass ceramic plate which is partly provided with electrically conductive, grounded layer on its one side |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3668260B2 (en) * | 1994-06-17 | 2005-07-06 | 株式会社フジマック | Eddy current convergence type heating device in electromagnetic induction heating |
| JP2011258442A (en) * | 2010-06-10 | 2011-12-22 | Toshiba Corp | Induction heating cooker |
-
2018
- 2018-07-09 EP EP18182343.6A patent/EP3595408A1/en not_active Withdrawn
-
2019
- 2019-07-05 CN CN201910604147.4A patent/CN110708782A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2859013A1 (en) * | 2003-08-07 | 2005-02-25 | Albert Thomann | Wok heating device, has induction coil supported by shell made up of insulating material such as deformable thermoplastic material, where shell is made in form of cap adapted to shape of glass-ceramic cooking surface |
| DE102004053963A1 (en) * | 2004-11-09 | 2006-05-11 | Schott Ag | Cooking panel, has induction coil arranged below cooking zone, and for inductively heating cookware that strands on glass or glass ceramic plate which is partly provided with electrically conductive, grounded layer on its one side |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3595408A1 (en) | 2020-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2530999B1 (en) | Device and system for induction heating | |
| US10536995B2 (en) | Induction heating arrangement and induction hob | |
| US9807822B2 (en) | Inductively heated hob having a metal-coated cover plate | |
| US5532461A (en) | Bottom-heated utensil for conductive or induction heating | |
| EP0327116B1 (en) | Magnetron | |
| US20100270288A1 (en) | Device for heating food using induction and device for transmitting energy | |
| US6921882B2 (en) | Ceramic cooktop | |
| EP2408261A1 (en) | A wok support for an induction hob | |
| CN110708782A (en) | Method for operating an induction hob and induction hob | |
| EP2991445B1 (en) | Induction heating arrangement, method for operating an induction heating arrangement and induction hob | |
| JPH1140335A (en) | Induction heating cooker | |
| EP2991446A1 (en) | Induction heating arrangement and induction hob | |
| US20040108307A1 (en) | Ceramic cooktop | |
| EP3637955B1 (en) | Induction cooker | |
| EP3930424B1 (en) | Support device for an induction coil | |
| JP2978097B2 (en) | Electromagnetic induction heating device | |
| CN215127171U (en) | Container with aluminum meltallizing layer for household induction cooker | |
| US20230180355A1 (en) | Combined inductor shielding system | |
| CN208113012U (en) | Coil panel component and electromagnetic heating cooking utensil | |
| CN216087059U (en) | Electromagnetic heating assembly and electromagnetic heating cooking utensil | |
| EP2265090B1 (en) | A microwave oven with a feed box system | |
| CN105105616A (en) | Electromagnetic-heating cooking pot and electric rice cooker of same | |
| CN2584076Y (en) | Induction heating electric cooker | |
| KR970006929Y1 (en) | Flange metal of magnetron | |
| KR200343838Y1 (en) | A induction heating cooker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200117 |