WO2024128531A1 - 유도 가열 조리기 - Google Patents
유도 가열 조리기 Download PDFInfo
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- WO2024128531A1 WO2024128531A1 PCT/KR2023/016828 KR2023016828W WO2024128531A1 WO 2024128531 A1 WO2024128531 A1 WO 2024128531A1 KR 2023016828 W KR2023016828 W KR 2023016828W WO 2024128531 A1 WO2024128531 A1 WO 2024128531A1
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- WIPO (PCT)
- Prior art keywords
- pattern
- coil
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- groups
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Classifications
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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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
- H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
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- 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
-
- 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
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
-
- 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
-
- 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
- H05B6/1236—Cooking devices induction cooking plates or the like and devices to be used in combination with them adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
-
- 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
- H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
-
- 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
- H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- This disclosure relates to induction heating cookers.
- PCB board printed circuit board
- An induction heating cooker may be provided with a top plate on which the object to be heated is placed and a plurality of heating coils.
- the plurality of heating coils are for heating the object to be heated on the top plate.
- Each of the plurality of heating coils may include a coil substrate formed by stacking a plurality of six or more pattern layers each having a coil pattern formed thereon.
- the coil substrate may be provided with a plurality of series pattern groups each including a plurality of the coil patterns connected in series. A plurality of series pattern groups may be connected in parallel.
- the inverter circuit supplies alternating current to the heating coil.
- the processor controls the inverter circuit.
- FIG. 1 is a schematic diagram of an induction heating cooker according to an embodiment of the present disclosure.
- Figure 2 is a plan view schematically showing a coil substrate according to an embodiment of the present disclosure.
- Figure 3 is a cross-sectional view schematically showing a coil substrate with a 16-layer structure according to an embodiment of the present disclosure.
- Figure 4 is a plan view schematically showing the first and second layer coil patterns of a six-layer coil substrate according to an embodiment of the present disclosure.
- Figure 5 is a schematic diagram showing an example of wiring of a coil substrate with a six-layer structure according to an embodiment of the present disclosure.
- FIGS. 6A and 6B are schematic diagrams showing examples of wiring of a six-layer coil substrate according to an embodiment of the present disclosure.
- Figure 7 is a schematic diagram showing an example of wiring of a coil substrate with a 12-layer structure according to an embodiment of the present disclosure.
- Figure 8 is a schematic diagram showing an example of wiring of a 12-layer coil substrate according to an embodiment of the present disclosure.
- FIG. 9 is an experimental result showing coil loss in examples of wiring of a coil substrate having a 12-layer structure shown in FIGS. 7 and 8.
- a or B “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof.
- One (e.g. first) component is said to be “coupled” or “connected” to another (e.g. second) component, with or without the terms “functionally” or “communicatively”.
- any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.
- the induction heating cooker may be equipped with a coil substrate.
- a coil substrate having a two-layer coil pattern structure may be employed as the coil substrate.
- the copper thickness of the first layer needs to be about 500 ⁇ m. If you do so, the skin effect may increase and coil loss may increase.
- a method of securing current capacity by reducing the thickness and width of the coil pattern and connecting a plurality of coil patterns in parallel may be considered. In this case, the number of interlayer connections for parallel connection of a plurality of coil patterns increases, and coil loss according to the wiring length may also increase.
- the present disclosure provides an induction heating cooker employing a coil substrate with a multi-layer coil pattern structure that can reduce coil loss and reduce the number of connections between layers.
- Figure 1 is a schematic diagram of an induction heating cooker 100 according to an embodiment of the present disclosure.
- the induction heating cooker 100 according to an embodiment of the present disclosure induction heats the object to be heated, for example, a cooking utensil such as a cooking pot, placed on a top plate.
- the induction heating cooker 100 according to an embodiment of the present disclosure can heat the object to be heated by freely placing it anywhere on the top plate.
- an induction heating cooker 100 includes a top plate 1 on which an object to be heated is placed, a plurality of heating coils 2 for heating the object to be heated, and a heating It may be provided with an inverter circuit 3 that supplies alternating current to the coil 2 and a processor 41 that controls the inverter circuit 3.
- the induction heating cooker 100 may be provided with a sensor coil for detecting the position of the object to be heated.
- the top plate 1 may be, for example, a flat plate made of an electrically insulating material such as glass or ceramic.
- a heating coil (2) is installed on the back side of the top plate (1).
- a plurality of heating coils 2 may be arranged to form a two-dimensional array (vertical and horizontal matrix) when viewed from a plan view.
- the heating coil 2 may be installed on the substrate in a sheet shape.
- the plurality of heating coils 2 may be in the form of a printed board (coil board (FIG. 2:20)) formed on a board through a patterning process using photoresist or the like.
- each of the plurality of heating coils 2 may have the same shape and size.
- the shapes and sizes of the plurality of heating coils 2 do not all need to be the same.
- at least one of the plurality of heating coils 2 may be different from the others in at least one of shape and size. The specific configuration of the coil substrate 20 will be described later.
- the inverter circuit 3 converts the alternating voltage supplied from a power source (not shown) into an arbitrary driving frequency and outputs it to the heating coil 2.
- the inverter circuit 3 may be a half-bridge type inverter circuit using a switching element, or may be a full-bridge type inverter circuit.
- the control device 4 may include a processor 41, for example, a central processing unit (CPU), and a memory 42.
- the control device 4 may further include input means.
- the processor 41 reads and executes the program stored in the memory 42. Thereby, the processor 41 controls the inverter circuit 3 according to the program stored in the memory.
- the processor 41 includes an inverter circuit ( 3) can be controlled.
- the position of the object to be heated placed on the top plate 1 can be detected by a position sensor, such as an inductive proximity coil, installed on the back side of the top plate 1.
- the processor 41 may control the power supplied to each coil 2 based on the detection value of a current sensor (not shown) installed corresponding to each heating coil 2 in the inverter circuit 3.
- FIG. 2 is a plan view schematically showing the coil substrate 20 according to an embodiment of the present disclosure.
- FIG. 3 is a cross-sectional view schematically showing a coil substrate 20 having a 16-layer structure according to an embodiment of the present disclosure.
- the coil substrate 20 may be a printed circuit board formed by stacking six or more pattern layers PL on which a coil pattern CP is formed. An insulating material is interposed between the pattern layers PL.
- the coil substrate 20 has a laminated structure of six or more layers, so the thickness of one layer of the heating coil, for example, the copper thickness, can be reduced. This reduces the impact of surface effect and reduces coil loss.
- the coil pattern CP is formed in each pattern layer.
- the coil pattern CP may be spiral-shaped.
- the coil pattern CP may be formed by a plurality of coil elements that are approximately rectangular in plan view, as shown in FIG. 2 .
- the coil pattern CP may be formed by a plurality of coil elements that are circular in plan view.
- the shape of the coil element forming the coil pattern CP is not limited to the above-described shape.
- the coil substrate 20 may include a plurality of serial pattern groups. A plurality of series pattern groups may be connected in parallel to each other. Each of the plurality of series pattern groups may include a plurality of coil patterns CP connected in series.
- a plurality of serial pattern groups may be formed such that coil patterns formed on adjacent pattern layers among the plurality of pattern layers are connected in parallel to each other. As a result, coils formed in a plurality of pattern layers can form a parallel connection relationship, and it is possible to secure a large current capacity.
- a plurality of coil patterns CP forming each of a plurality of serial pattern groups may be formed on four or more pattern layers. At least one of the plurality of serial pattern groups may have a combination of a plurality of pattern layers that is different from the remaining serial pattern groups. According to this, the wiring structure can be simplified, reducing the number of inter-layer connections, and thereby reducing power loss.
- the plurality of serial pattern groups may include at least two serial pattern groups in which the combination of the plurality of pattern layers is the same. Thereby, the number of inter-layer connections can be reduced.
- Figures 2 and 3 schematically show a coil substrate 20 formed by stacking 16 pattern layers (first to sixteenth layers).
- the coil substrate 20 includes four serial pattern groups 21 to 24.
- Each of the four series pattern groups 21 to 24 includes four coil patterns CP connected in series.
- Four series pattern groups (21) to (24) are connected in parallel to each other.
- the difference between the sum of lengths of the coil patterns CP forming each of the plurality of serial pattern groups 21 to 24 may be 10% or less.
- the series pattern group 21 is formed by serially connecting coil patterns CP formed on the first, eighth, ninth, and sixteenth layers.
- the series pattern group 22 is formed by connecting coil patterns CP formed on the second, seventh, tenth, and fifteenth layers in series.
- the serial pattern group 23 is formed by connecting coil patterns CP formed on the third, sixth, eleventh, and fourteenth layers in series.
- the series pattern group 24 is formed by serially connecting coil patterns CP formed on the fourth, fifth, twelfth, and thirteenth layers.
- the series pattern groups 21 to 24 shown in FIGS. 2 and 3 have different combinations of pattern layers in which the coil patterns CP are formed.
- the coil patterns CP formed in different pattern layers are connected in parallel.
- both terminals (input terminal 2a, output terminal 2b) for parallel connection of a plurality of series pattern groups 21 to 24 are coil patterns. It is formed on the outer periphery of (CP). And as shown in FIG. 3, electrical connection between pattern layers is formed by a conductor (through hole (TH)) formed through the coil substrate 20. The through hole TH is formed by penetrating all of the pattern layers PL.
- Each series pattern group 21 is formed by one intermediate terminal 2c formed of a conductor provided on the outer periphery of the coil pattern CP and a plurality of connection terminals 2d formed of a conductor provided on the inner periphery of the coil pattern CP. ) to (24), four coil patterns (CP) are connected in series.
- the coil patterns are formed so that the input terminal 2a side is the uppermost layer among the plurality of pattern layers PL, and the output terminal 2b side is the lowest layer among the plurality of pattern layers PL. (CP) is connected. According to this configuration, when the weak electric sensor is mounted on the upper layer when forming the multilayer coil patterns CP, it is easy to form the weak electric sensor into a thin film structure.
- the multi-layer structure of the coil substrate 20 is not limited to the 16-layer structure described above.
- Figure 4 is a plan view schematically showing the first and second layer coil patterns of a six-layer coil substrate according to an embodiment of the present disclosure.
- Figure 5 is a schematic diagram showing an example of wiring of a coil substrate with a six-layer structure according to an embodiment of the present disclosure.
- the coil substrate 20 is a printed board formed by stacking six patterned layers.
- each pattern layer has a spiral or concentric coil pattern (CP).
- the coil pattern CP of the first layer includes two spiral coil patterns CP11 and CP12 connected in parallel.
- the coil pattern CP of the second layer includes two spiral coil patterns CP21 and CP22 connected in series.
- the coil pattern CP of the third layer includes two independent spiral-shaped coil patterns CP31 and CP32. As a result, the coil patterns CP31 and CP32 are connected in parallel with each other.
- the coil pattern CP of the fourth layer has the same structure as the coil pattern CP of the third layer.
- the coil pattern CP of the fourth layer includes two independent spiral-shaped coil patterns CP41 and CP42. As a result, the coil patterns CP31 and CP32 are connected in parallel with each other.
- the coil pattern CP of the fifth layer has the same structure as the coil pattern CP of the second layer. That is, the coil pattern CP of the fifth layer includes two spiral coil patterns CP51 and CP52 connected in series.
- the coil pattern CP of the sixth layer has the same structure as the coil pattern CP of the first layer. That is, the coil pattern CP of the sixth layer includes two spiral coil patterns CP61 and CP62 connected in parallel.
- the coil substrate 20 includes three series pattern groups 21 to 23, each of which includes four coil patterns CP connected in series.
- the series pattern group 21 includes coil patterns CP11, CP32, CP41, and CP62 connected in series.
- the series pattern group 22 includes coil patterns CP12, CP31, CP42, and CP61 connected to each other in series.
- the series pattern group 23 includes coil patterns CP21, CP22, CP52, and CP51 connected to each other in series.
- the three series pattern groups (21) to (23) are connected in parallel.
- the difference between the sum of lengths of the coil patterns CP forming each of the plurality of serial pattern groups 21 to 23 may be 10% or less.
- two series pattern groups 21 and 22 are formed by connecting four coil patterns CP formed on four pattern layers in series. That is, the serial pattern group 21 is a serial connection of four coil patterns (CP11, CP32, CP41, CP62) formed in the first, third, fourth, and sixth layers, respectively. (22) shows four coil patterns (CP12, CP31, CP42, CP61) formed in the first, third, fourth, and sixth layers, respectively, connected in series. Accordingly, the series pattern groups 21 and 22 have the same combination of pattern layers on which the coil patterns CP formed are connected in series. Additionally, the series pattern group 23 is formed by connecting four coil patterns CP formed on two pattern layers in series.
- the series pattern group 23 is formed by connecting the coil patterns CP21 and CP22 formed on the second layer and the coil patterns CP52 and CP51 formed on the fifth layer in series. Accordingly, the combination of pattern layers on which the serially connected coil patterns CP are formed in the series pattern group 23 is different from the combination of pattern layers of the two series pattern groups 21 and 22. According to this configuration, when three series pattern groups 21 to 23 are connected in parallel, the coil patterns CP formed on different pattern layers are connected in parallel.
- both terminals for connecting a plurality of series pattern groups 21 to 23 in parallel are formed on the outer periphery of the coil pattern CP. .
- the electrical connection between the pattern layers is formed by a conductor (through hole (TH)) formed through all the pattern layers.
- Each series pattern group 21 to (23) is formed by a connection terminal 2c formed of a conductor provided on the outer periphery of the coil pattern CP and a connection terminal 2d formed of a conductor installed on the inner periphery of the coil pattern CP. ) are connected in series.
- the impedance of the outer patterns (CP11, CP21, CP31, CP41, CP51, CP61) is Z1
- the impedus of the inner patterns (CP12, CP22, CP32, CP42, CP52, CP62) is Z2.
- the impedances of the three series pattern groups (21) to (23) are calculated to be the same. According to this configuration, the gap in impedance between a plurality of series pattern groups can be reduced to reduce the current gap between each series pattern group, thereby reducing coil loss.
- the number of interlayer connections is 7.
- FIGS. 6A and 6B are schematic diagrams showing examples of wiring of a six-layer coil substrate according to an embodiment of the present disclosure.
- the gap in impedance between the three series pattern groups 21 to 23 can be reduced, so the impedance of the outer patterns (CP11, CP21, CP31, CP41, CP51, CP61) is set to Z1. If they are all the same and the impedances of the inner patterns (CP12, CP22, CP32, CP42, CP52, CP62) are all the same as Z2, the middle terminals of the series pattern groups 21 and 22 can be integrated.
- the series pattern group It is necessary to divide the middle terminal of (21)(22).
- the impedance of the outer patterns CP11, CP21, CP31
- the impedance of the outer patterns CP41, CP51, CP61
- the impedance of the inner patterns CP12, CP22, CP32
- the impedance of the inner patterns CP12, CP22, CP32
- FIG. 7 is a schematic diagram showing an example of wiring of a 12-layer coil substrate according to an embodiment of the present disclosure.
- the coil substrate 20 is a printed circuit board formed by stacking 12 patterned layers.
- Each of the pattern layers in the coil substrate 20 has a spiral or concentric coil pattern (CP).
- the coil pattern CP includes two coil patterns CP1 and CP2 with impedance values Z1 and Z2, respectively.
- the coil patterns CP of the first to third layers and the tenth to twelfth layers have a structure in which two spiral coil patterns CP1 (CP2) are connected in parallel.
- the coil patterns CP of the fourth to ninth layers have a structure in which two spiral coil patterns CP1 and CP2 are independent.
- the coil substrate 20 has six series pattern groups 21 to 26.
- Each of the six series pattern groups 21 to 26 includes two coil patterns CP1 and two coil patterns CP2 connected in series with each other.
- Six series pattern groups (21) to (26) are connected in parallel.
- the difference in the sum of the lengths of the coil patterns constituting each of the plurality of serial pattern groups 21 to 26 may be 10% or less.
- two serial pattern groups 21 and 22 include two coils formed in the first, sixth, seventh and twelfth layers.
- a pattern (CP1) and two coil patterns (CP2) are connected in series.
- the two series pattern groups 23 and 24 are formed by serially connecting two coil patterns CP1 and two coil patterns CP2 formed in the second, fifth, eighth, and eleventh layers. It was done.
- the two series pattern groups 25 and 26 are formed by serially connecting two coil patterns CP1 and two coil patterns CP2 formed in the third, fourth, ninth and tenth layers. It was done.
- both terminals (input terminal 2a, output terminal 2b) connecting the plurality of series pattern groups 21 to 26 in parallel are formed on the outer periphery of the coil patterns CP1 (CP2).
- the connection terminal 2c is formed of a conductor (through hole (TH)) installed on the outer periphery of the coil patterns CP1 (CP2)
- the connection terminal 2c is formed of a conductor installed on the inner periphery of the coil patterns CP1 (CP2).
- Two coil patterns CP1 and two coil patterns CP2 forming each series pattern group 21 to 26 are connected in series by the connection terminal 2d.
- the impedance of the six series pattern groups 21 to 26 is calculated to be the same as 2 . Additionally, in the coil substrate 20 shown in FIG. 7, the number of connections between layers is 18.
- FIG. 8 is a schematic diagram showing an example of wiring of a 12-layer coil substrate according to an embodiment of the present disclosure.
- the coil substrate 20 shown in FIG. 8 is a printed board formed by stacking 12 pattern layers, similar to the coil substrate 20 shown in FIG. 7, but the method of connecting the pattern layers is different.
- the pattern layers are connected to be symmetrical about the centers of the pattern layers (between the sixth and seventh layers), but in the coil substrate 20 shown in FIG. 8, the pattern layers The pattern layers are connected asymmetrically with respect to the centers of the layers (between the sixth and seventh layers).
- the coil pattern CP formed on the uppermost pattern layer is connected in series to the coil pattern CP formed on pattern layers other than the lowest layer.
- the coil pattern CP closest to the uppermost pattern layer is connected in series to the coil pattern CP formed in the pattern layer farthest from the lowest pattern layer.
- the two serial pattern groups 21 and 22 include two coil patterns CP1 and two coil patterns CP2 formed on the first, sixth, ninth, and tenth layers. It is connected in series.
- the two series pattern groups 23 and 24 are formed by connecting in series two coil patterns CP1 and two coil patterns CP2 formed in the second, fifth, eighth, and eleventh layers. will be.
- the two series pattern groups 25 and 26 are formed by connecting two coil patterns CP1 and two coil patterns CP2 formed in the third, fourth, seventh, and twelfth layers in series. will be.
- FIG. 9 is an experimental result showing coil loss in examples of wiring of the coil substrate 20 having the 12-layer structure shown in FIGS. 7 and 8.
- the magnetic impedance of each series pattern group 21 to 26 is designed to be the same, in actual operation, especially on the surface layer (for example, the first and twelfth layers in the case of a 12-layer structure)
- the influence of this mutual impedance decreases and the current flowing through it increases, resulting in greater coil loss.
- the gap in impedance may increase due to the proximity effect of a plurality of series pattern groups connected in parallel.
- the plurality of serial pattern groups 21 to 26 may be formed so that the coil pattern formed on the uppermost pattern layer is connected in series with the coil pattern formed on pattern layers other than the lowest layer.
- the number of pattern layers of the coil substrate 20 may be other than 6 layers, 12 layers, and 16 layers, for example, 10 layers.
- the series pattern group may have a structure in which five or more coil patterns are connected in series.
- the present disclosure provides a coil substrate with a multi-layer coil pattern structure that can reduce coil loss and an induction heating cooker employing the same.
- the present disclosure provides a coil substrate with a multi-layer coil pattern structure that can reduce the number of connections between layers, and an induction heating cooker employing the same.
- the purpose of the present disclosure is not limited thereto.
- An induction heating cooker may be provided with a top plate on which the object to be heated is placed and a plurality of heating coils.
- the plurality of heating coils are for heating the object to be heated.
- Each of the plurality of heating coils may include a coil substrate formed by stacking a plurality of six or more pattern layers each having a coil pattern formed thereon.
- the coil substrate may be provided with a plurality of series pattern groups each including a plurality of the coil patterns connected in series. A plurality of series pattern groups are connected in parallel.
- the inverter circuit supplies alternating current to the heating coil.
- the processor controls the inverter circuit. According to a laminated structure of six or more layers, it is possible to thin the copper thickness of one layer and reduce coil loss by reducing the influence of the skin effect.
- At least one of the plurality of series pattern groups may be a serial connection of the coil patterns formed on four or more pattern layers. As a result, the number of connections between floors can be reduced.
- the plurality of serial pattern groups may be formed such that coil patterns formed on adjacent pattern layers among the plurality of pattern layers are connected in parallel to each other.
- coils formed in a plurality of pattern layers can form a parallel connection relationship, and it is possible to secure a large current capacity.
- At least one of the plurality of serial pattern groups may have a combination of a plurality of pattern layers that is different from the remaining serial pattern groups.
- the plurality of serial pattern groups may include at least two serial pattern groups with the same combination of the plurality of pattern layers.
- the plurality of serial pattern groups may be formed such that the coil pattern formed on the uppermost layer is connected in series to the coil pattern formed on pattern layers other than the lowest layer. According to this, the impedance gap caused by the proximity effect of a plurality of series pattern groups connected in parallel can be reduced.
- the difference between the total lengths of the plurality of coil patterns constituting each of the plurality of serial pattern groups may be 10% or less.
- the gap between the total lengths of the coil patterns of the plurality of series pattern groups increases, the current gap between the plurality of series pattern groups connected in parallel increases, resulting in increased loss.
- both terminals connecting the plurality of series pattern groups in parallel may be formed on the outer periphery of the coil pattern.
- the electrical connection between the plurality of pattern layers may be formed by a conductor formed through the plurality of pattern layers.
- the coil pattern may have a spiral shape.
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Abstract
Description
Claims (10)
- 피가열물이 놓이는 탑플레이트(1);상기 피가열물을 가열하기 위한 것으로서, 각각 코일패턴(CP)이 형성된 6층 이상의 복수의 패턴층(PL)을 적층하여 형성된 코일 기판(20)을 포함하며, 상기 코일 기판은 각각 직렬 접속된 복수의 상기 코일 패턴을 포함하는 복수의 직렬 패턴군(21~26)을 구비하고, 상기 복수의 직렬 패턴군이 병렬 접속된, 복수의 가열 코일(1);상기 가열 코일에 교류 전류를 공급하는 인버터 회로(3); 및상기 인버터 회로를 제어하는 프로세서(41);를 구비하는 유도 가열 조리기.
- 제1항에 있어서,상기 복수의 직렬 패턴군 중 적어도 하나는, 4층 이상의 상기 패턴층에 형성된 상기 코일 패턴들을 직렬 접속한 것인 유도 가열 조리기.
- 제1항 또는 제2항에 있어서,상기 복수의 직렬 패턴군은, 상기 복수의 패턴층 중 인접한 패턴층들에 형성된 코일 패턴들이 상호 병렬 접속되도록, 형성되는 유도 가열 조리기.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 복수의 직렬 패턴군 중 적어도 하나는 복수의 상기 패턴층의 조합이 나머지 직렬 패턴군과 다른 유도 가열 조리기.
- 제1항 내지 제4항 중 어느 한 항에 있어서,상기 복수의 직렬 패턴군은 복수의 상기 패턴층의 조합이 동일한 적어도 2개의 직렬 패턴군을 구비하는 유도 가열 조리기.
- 제1항 내지 제5항 중 어느 한 항에 있어서,상기 복수의 직렬 패턴군은, 최상층에 형성된 상기 코일 패턴은 최하층 이외의 패턴층에 형성된 상기 코일 패턴에 직렬 접속되도록, 형성되는 유도 가열 조리기.
- 제1항 내지 제6항 중 어느 한 항에 있어서,상기 복수의 직렬 패턴군 각각을 구성하는 상기 복수의 코일 패턴들의 합계 길이들의 차이는 10% 이하인 유도 가열 조리기.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 복수의 직렬 패턴군을 병렬 접속한 양 단자(2a, 2b)는 상기 코일 패턴의 외주부에 형성된 유도 가열 조리기.
- 제1항 내지 제8항 중 어느 한 항에 있어서,상기 복수의 패턴층 사이의 전기적인 접속은 상기 복수의 패턴층을 관통하여 형성된 도전체(TH)에 의하여 형성되는 유도 가열 조리기.
- 제1항 내지 제9항 중 어느 한 항에 있어서,상기 코일 패턴은 스파이럴 형상인 유도 가열 조리기.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23903734.4A EP4598268A4 (en) | 2022-12-16 | 2023-10-27 | INDUCTION HEATING COOKER |
| CN202380085526.1A CN120500907A (zh) | 2022-12-16 | 2023-10-27 | 感应加热炊具 |
| KR1020257011698A KR20250072993A (ko) | 2022-12-16 | 2023-10-27 | 유도 가열 조리기 |
| US19/170,417 US20250234430A1 (en) | 2022-12-16 | 2025-04-04 | Induction heating cooker |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022201364A JP2024086301A (ja) | 2022-12-16 | 2022-12-16 | コイル基板及び誘導加熱調理器 |
| JP2022-201364 | 2022-12-16 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/170,417 Continuation US20250234430A1 (en) | 2022-12-16 | 2025-04-04 | Induction heating cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024128531A1 true WO2024128531A1 (ko) | 2024-06-20 |
Family
ID=91485119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/016828 Ceased WO2024128531A1 (ko) | 2022-12-16 | 2023-10-27 | 유도 가열 조리기 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250234430A1 (ko) |
| EP (1) | EP4598268A4 (ko) |
| JP (1) | JP2024086301A (ko) |
| KR (1) | KR20250072993A (ko) |
| CN (1) | CN120500907A (ko) |
| WO (1) | WO2024128531A1 (ko) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000340352A (ja) * | 1999-05-25 | 2000-12-08 | Toshiba Home Technology Corp | 電磁誘導加熱装置 |
| JP2012079646A (ja) * | 2010-10-06 | 2012-04-19 | Mitsubishi Electric Corp | 誘導加熱装置および被加熱体 |
| JP2014123539A (ja) * | 2012-11-26 | 2014-07-03 | Panasonic Corp | 誘導加熱装置およびそれを用いた炊飯器 |
| JP2019041273A (ja) | 2017-08-25 | 2019-03-14 | 株式会社村田製作所 | コイルアンテナ及び電子機器 |
| JP2019186235A (ja) | 2018-03-31 | 2019-10-24 | Tdk株式会社 | コイル部品及びこれを備えたワイヤレス電力伝送回路 |
| JP2020064722A (ja) * | 2018-10-15 | 2020-04-23 | パナソニックIpマネジメント株式会社 | 誘導加熱コイルユニット及び誘導加熱調理器 |
| JP2022043697A (ja) * | 2020-09-04 | 2022-03-16 | 大日本印刷株式会社 | コイル及び加熱装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL296248A (ko) * | 1962-08-09 | |||
| ES2619114B1 (es) * | 2015-12-22 | 2018-04-10 | Bsh Electrodomésticos España, S.A. | Campo de cocción por inducción |
| JP2020053522A (ja) * | 2018-09-26 | 2020-04-02 | 矢崎総業株式会社 | 電力伝送ユニット |
-
2022
- 2022-12-16 JP JP2022201364A patent/JP2024086301A/ja active Pending
-
2023
- 2023-10-27 KR KR1020257011698A patent/KR20250072993A/ko active Pending
- 2023-10-27 CN CN202380085526.1A patent/CN120500907A/zh active Pending
- 2023-10-27 WO PCT/KR2023/016828 patent/WO2024128531A1/ko not_active Ceased
- 2023-10-27 EP EP23903734.4A patent/EP4598268A4/en active Pending
-
2025
- 2025-04-04 US US19/170,417 patent/US20250234430A1/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000340352A (ja) * | 1999-05-25 | 2000-12-08 | Toshiba Home Technology Corp | 電磁誘導加熱装置 |
| JP2012079646A (ja) * | 2010-10-06 | 2012-04-19 | Mitsubishi Electric Corp | 誘導加熱装置および被加熱体 |
| JP2014123539A (ja) * | 2012-11-26 | 2014-07-03 | Panasonic Corp | 誘導加熱装置およびそれを用いた炊飯器 |
| JP2019041273A (ja) | 2017-08-25 | 2019-03-14 | 株式会社村田製作所 | コイルアンテナ及び電子機器 |
| JP2019186235A (ja) | 2018-03-31 | 2019-10-24 | Tdk株式会社 | コイル部品及びこれを備えたワイヤレス電力伝送回路 |
| JP2020064722A (ja) * | 2018-10-15 | 2020-04-23 | パナソニックIpマネジメント株式会社 | 誘導加熱コイルユニット及び誘導加熱調理器 |
| JP2022043697A (ja) * | 2020-09-04 | 2022-03-16 | 大日本印刷株式会社 | コイル及び加熱装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4598268A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4598268A4 (en) | 2026-01-14 |
| JP2024086301A (ja) | 2024-06-27 |
| CN120500907A (zh) | 2025-08-15 |
| EP4598268A1 (en) | 2025-08-06 |
| US20250234430A1 (en) | 2025-07-17 |
| KR20250072993A (ko) | 2025-05-26 |
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