CN110557856A - Heating wire coil structure and electromagnetic stove with same - Google Patents
Heating wire coil structure and electromagnetic stove with same Download PDFInfo
- Publication number
- CN110557856A CN110557856A CN201810553128.9A CN201810553128A CN110557856A CN 110557856 A CN110557856 A CN 110557856A CN 201810553128 A CN201810553128 A CN 201810553128A CN 110557856 A CN110557856 A CN 110557856A
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- CN
- China
- Prior art keywords
- electromagnetic
- control
- heating
- electromagnetic coils
- coil
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 74
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 230000006698 induction Effects 0.000 claims description 11
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- F24C7/067—Arrangement or mounting of electric heating elements on ranges
-
- 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
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
-
- 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
-
- 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
- H05B6/36—Coil arrangements
- H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces
-
- 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
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The invention relates to a heating wire coil structure which comprises at least two electromagnetic coils, magnetic stripes arranged below the electromagnetic coils and a control circuit board, wherein the electromagnetic coils are arranged adjacently, the control circuit board comprises a power supply circuit and a control chip, two ends of each electromagnetic coil are respectively and electrically connected with the output end of the power supply circuit through control switches, and each control switch is electrically connected with the control chip so as to be opened and closed under the control of the control chip. The electromagnetic coils in the heating wire coil structure are high in distribution and arrangement flexibility, the panel of the cooker is conveniently covered, and the cooker does not need to be placed at a specific position when the cooker is used, so that the cooker is more convenient to operate. Meanwhile, the control switch can independently control the electrification of each electromagnetic coil, the heating control of different areas is realized, the flexibility of the heating control is improved, the balance of temperature is realized by switching on and off the corresponding electromagnetic coils or adjusting the heating power of the electromagnetic coils, and the uniformity and the stability of heating are further improved.
Description
Technical Field
The invention relates to the technical field of induction cookers, in particular to a heating wire coil structure and an induction cooker applying the wire coil structure.
Background
The working principle of the induction cooker is that a low-frequency alternating current power supply of 50HZ is converted into a high-frequency alternating current power supply of 30KHZ-40KHZ, the high-frequency alternating current power supply is directly added into a coil panel of the induction cooker to generate a high-power electromagnetic field, and then the electromagnetic field is utilized to enable a pot body to generate eddy current to heat. Chinese utility model patent No. CN204795676U (application No. 201520439462.3) discloses an even heating electromagnetic coil, wherein the disclosed electromagnetic coil includes an inner ring coil, an outer ring coil and magnetic strips corresponding to the inner ring coil and the outer ring coil. The electromagnetic coil of this structure can't cover the heating surface of full electromagnetic range usually, has the heating blind area, when using, and is higher to the position accuracy requirement of placing of pan. In addition, when the electromagnetic stove of the heating plate with the structure is used, the heating area is relatively fixed, and when high temperature occurs in a partial area, the heating scheme cannot be adjusted in time. Different electromagnetic coils are usually supplied with power by different power supply ends, and the different power supply ends can cause electromagnetic field interference between the two electromagnetic coils due to different power supply frequencies in the working process, so that the uniform stability of heating is influenced.
In addition, the existing temperature sensor for detecting the heating temperature of the electromagnetic stove is usually arranged at a fixed position, so that the heating condition of the electromagnetic stove can not be accurately expressed, the heating scheme of the heating wire coil can not be correctly matched with a corresponding heating area, and the heating efficiency is low.
Disclosure of Invention
the first technical problem to be solved by the present invention is to provide a heating wire coil structure that can be flexibly distributed and arranged according to needs and can perform heating control by regions, in view of the above prior art.
the second technical problem to be solved by the present invention is to provide an induction cooker capable of collecting heating temperatures of the induction cooker at multiple points, so as to conveniently adjust a heating scheme.
The technical scheme adopted by the invention for solving the first technical problem is as follows: heating drum structure, its characterized in that: comprises that
The electromagnetic coils comprise at least two electromagnetic coils, and the electromagnetic coils are adjacently arranged;
The magnetic strip is arranged below the electromagnetic coil;
The control circuit board comprises a power supply circuit and a control chip;
Two ends of each electromagnetic coil are respectively and electrically connected with the output end of the power supply circuit through control switches, and each control switch is electrically connected with the control chip to be opened and closed under the control of the control chip.
In order to ensure that the power supply frequencies of different coils are the same and further improve the uniform heating stability of the electromagnetic coil, the electromagnetic coil heating system further comprises an electromagnetic valve group, wherein the electromagnetic valve group comprises at least one electromagnetic valve; an electromagnetic valve is connected between any two electromagnetic coils, and each electromagnetic valve is electrically connected with the power supply circuit and the control chip respectively so as to be opened and closed under the control of the control chip, thereby realizing the series connection between the electromagnetic coils.
Preferably, the magnetic strips are radially distributed below the electromagnetic coils.
In order to facilitate installation, the electromagnetic coil is characterized by further comprising a metal plate, the magnetic strip is attached above the metal plate, and the electromagnetic coil support is arranged on the metal plate and located above the magnetic strip; the control circuit board is arranged below the metal plate.
Alternatively, the electromagnetic coils are arranged next to each other in the linear direction.
In order to enable the electromagnetic coils to better distribute and cover the panel of the induction cooker, the electromagnetic coils are annular coils with rectangular outlines.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an use electromagnetism stove that has aforementioned heating wire coil structure which characterized in that: the heating wire coil structure is arranged in the stove body and is positioned below the panel, and the electromagnetic coil covers the panel surface of the panel;
the stove also comprises temperature sensing elements arranged in the stove body, the number of the temperature sensing elements is matched with that of the electromagnetic coils, a hollow area is arranged at the center of each electromagnetic coil, each temperature sensing element is correspondingly arranged in the hollow area at the center of each electromagnetic coil, and each temperature sensing element is electrically connected with the control chip.
Compared with the prior art, the invention has the advantages that: according to the heating wire coil structure, the electromagnetic coils are distributed and arranged in an adjacent arrangement mode, so that the flexibility of the distribution and arrangement of the electromagnetic coils is improved, the electromagnetic coils can be flexibly arranged according to the shape and the area of the panel of the cooker when in use, and further the panel of the cooker is covered, so that a cooker does not need to be placed at a specific position when in use, and the operation is more convenient. Simultaneously this heating drum structure can realize the independent control to each solenoid circular telegram through control switch, and then can switch on different solenoid according to specific heating condition, and then realize the heating control to different regions, so make the control flexibility of heating higher. If can cooperate the pan to place position detection device, and then switch on the pan and place regional corresponding solenoid. Or under the condition that the heating temperature difference is large in different areas, the balance of the temperature is realized by switching on and off the corresponding electromagnetic coils or adjusting the heating power of the electromagnetic coils, and the uniformity and the stability of heating are further improved.
According to the electromagnetic stove, the temperature sensing elements are arranged at the centers of the electromagnetic coils respectively and used for detecting the temperatures of the areas corresponding to the electromagnetic coils, on one hand, the temperature sensing elements are ingenious in arrangement position, and the heating temperature conditions of different areas can be better detected on the premise that the arrangement position of the electromagnetic coils is not influenced. On the other hand, the distribution condition of the heating temperature can be more accurately obtained through the temperature sensing element, so that a more accurate heating control scheme is conveniently and further provided, and the heating efficiency is better improved.
drawings
Fig. 1 is a schematic structural diagram of a heating wire coil structure in an embodiment of the invention.
Fig. 2 is an electrical connection diagram of the cooker in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The heating wire coil structure in this embodiment can be used in various products that need electromagnetic heating, uses the induction cooker as the example in this embodiment, explains the heating wire coil structure and uses the induction cooker that has this heating wire coil structure simultaneously.
As shown in fig. 1 and 2, the induction cooker in the present embodiment includes a cooker body, and a heating wire coil structure and a temperature sensing element 7 provided in the cooker body. The kitchen range body can adopt the cooking utensils structure among the prior art, can include a casing, sets up the panel at the casing top, and the heating coil structure is then corresponding to be set up in the casing and be located the below of panel.
The heating wire coil structure comprises an electromagnetic coil 1, a magnetic strip 2, a control switch 4, an electromagnetic valve group, a control circuit board 3 and a metal plate 6.
Magnetic stripe 2 is including many, it establishes on the upper surface of metal sheet 6 to be dispersed the form and distribute, solenoid 1 is including at least two, solenoid 1 supports the top that sets up on metal sheet 6 and lie in magnetic stripe 2, solenoid 1 can specifically set up the distribution mode according to the concrete shape of panel, if can set up to dispersed form distribution mode, set up to the range of a plurality of region pieces on the two-dimensional direction and place, or set up to the order arrangement mode of a style of calligraphy, make solenoid 1 can both cover all regions of panel, can realize the heating to all regions of panel, and then the during operation, can place the position of pan at will on the panel, it is more convenient to operate. The distribution of the magnetic strips 2 is matched with that of the electromagnetic coils 1.
in the embodiment, three electromagnetic coils 1 are provided, and the three electromagnetic coils 1 are sequentially arranged along a straight line. Usually, the panel is rectangular, three electromagnetic coils 1 can adopt copper wires to wind into a ring coil with a rectangular outline, and the three electromagnetic coils 1 can be arranged in sequence along the front-back direction or in sequence along the left-right direction in a horizontally placed state. Each electromagnetic coil 1 is wound to leave a hollow area in the center. The number of the temperature sensing elements 7 is the same as that of the electromagnetic coils 1, and in this embodiment, three temperature sensing elements 7 are provided, and the temperature sensing elements 7 may be various temperature sensors in the prior art. The temperature sensing elements 7 are respectively correspondingly arranged in the hollow areas of the electromagnetic coils 1.
The electromagnetic valve group comprises a plurality of electromagnetic valves 5, the number of the electromagnetic valves 5 is matched with the number of the electromagnetic coils 1, namely, one electromagnetic valve 5 is connected between any two electromagnetic coils 1.
The control circuit board 3 includes a power supply circuit 31 and a control chip 32 electrically connected to each other, and an input terminal of the power supply circuit 31 is connected to an external power supply. Two ends of each electromagnetic coil 1 are respectively and electrically connected with the output end of the power supply circuit 31 through a control switch 4, and each control switch 4 is electrically connected with the control chip 32 to be opened and closed under the control of the control chip 32. The control circuit board 3 is arranged below the metal plate 6, and the metal plate 6 plays a role in shielding the magnetic field of the electromagnetic coil 1, so that the influence of the magnetic field generated by the electromagnetic coil 1 on the control circuit board 3 is avoided.
Each solenoid valve 5 is electrically connected with the power supply circuit 31 and the control chip 32 respectively to be opened and closed under the control of the control chip 32, so that the series connection between the electromagnetic coils 1 is realized. The mode that adopts series connection between solenoid 1 can make each solenoid 1 supply frequency keep unanimous, avoids the electromagnetic field interference that leads to because of the supply frequency difference between solenoid 1 for the even stability of heating is better, and then obtains better culinary art and experiences. Each temperature sensing element 7 is electrically connected to the control chip 32 and transmits heating temperature data of the corresponding region to the control chip 32.
According to different heating schemes, different control switches 4 and different electromagnetic valves 5 can be controlled to be closed, so that the conduction of a single electromagnetic coil 1 or the series conduction of at least two electromagnetic coils 1 is realized. Therefore, according to the heating scheme, different electromagnetic coils 1 can be controlled to work, and then effective control over the heating area is achieved, so that the controllability of the heating area is better. Particularly, when the plurality of electromagnetic coils 1 are arranged in the two-dimensional direction, controllability of the heating region is better. If when using, can also cooperate the pan to place the detection device of position and use together, after detecting that the pan is placed, the control pan is placed regional within range's solenoid 1 and is carried out work, and then realizes heating work, not only makes things convenient for the operation that the pan was placed, need not to place the pan in the specific position, can also accurately match the pan position and heat, heat utilization rate is higher. Of course, all the electromagnetic coils 1 can be opened to work, and when the cookware is placed, the cookware can be placed on the panel at will, so that the heating effect on the cookware can be realized.
In the embodiment, three electromagnetic coils 1 can be controlled to be connected in series to work together, and the heating control of the whole panel area is realized, so that the scheme is suitable for being used under the condition that a cooker is large; the electromagnetic coil 1 in the middle can be controlled to be conducted to work, namely, the heating control of the central area of the panel is realized, the scheme is suitable for being used under the condition that a cooker is small, and any electromagnetic coil 1 on two sides can be controlled to work according to the use habit of a user; the electromagnetic coils 1 positioned at the two sides can be controlled to be conducted to work, so that the heating control of the areas at the two sides of the panel is realized, the heating of different areas of the panel is further realized, and the scheme is suitable for being used under the condition that the central temperature of the panel is higher.
When the electromagnetic induction cooker works, a calculation principle formula of the temperature of the cooker panel is arranged in the control chip 32, and further temperature calibration and calculation and working power matching of the electromagnetic coil 1 are carried out according to temperature data acquired by the three temperature sensing elements 7. When the cooker works, the acquired temperature data of each region can be detected through the temperature sensing element 7, so that different control schemes can work, the heating temperature on the cooker panel is kept uniform and stable, and the working efficiency of the cooker is improved.
Claims (7)
1. A heating wire coil structure is characterized in that: comprises that
The electromagnetic coils (1) comprise at least two electromagnetic coils, and the electromagnetic coils (1) are arranged adjacently;
The magnetic strip (2) is arranged below the electromagnetic coil (1);
The control circuit board (3) comprises a power supply circuit (31) and a control chip (32);
Two ends of each electromagnetic coil (1) are respectively and electrically connected with the output end of the power supply circuit (31) through control switches (4), and each control switch (4) is electrically connected with the control chip (32) to be opened and closed under the control of the control chip (32).
2. A heating wire coil structure as claimed in claim 1, wherein: the electromagnetic valve group comprises at least one electromagnetic valve (5); one electromagnetic valve (5) is connected between any two electromagnetic coils (1), and each electromagnetic valve (5) is electrically connected with a power supply circuit (31) and a control chip (32) respectively so as to be opened and closed under the control of the control chip (32), so that the electromagnetic coils (1) are connected in series.
3. A heating wire coil structure as claimed in claim 1, wherein: the magnetic strips (2) are radially distributed below the electromagnetic coil (1).
4. A heating wire coil structure as claimed in claim 1, wherein: the electromagnetic coil is characterized by further comprising a metal plate (6), the magnetic strip (2) is attached to the upper portion of the metal plate (6), and the electromagnetic coil (1) is supported on the metal plate (6) and located above the magnetic strip (2); the control circuit board (3) is arranged below the metal plate (6).
5. a heating coil structure as claimed in any one of claims 1 to 4, wherein: the electromagnetic coils (1) are sequentially arranged next to each other along the linear direction.
6. A heating coil structure as claimed in any one of claims 1 to 4, wherein: the electromagnetic coil (1) is an annular coil with a rectangular outline.
7. An induction cooker using the heating wire coil structure as claimed in any one of claims 1 to 6, wherein: the heating wire coil structure is arranged in the stove body and is positioned below the panel, and the electromagnetic coil (1) covers the panel surface of the panel;
The stove is characterized by further comprising temperature sensing elements (7) arranged in the stove body, the number of the temperature sensing elements (7) is matched with that of the electromagnetic coils (1), a hollow area is arranged in the center of each electromagnetic coil (1), each temperature sensing element (7) is correspondingly arranged in the hollow area in the center of each electromagnetic coil (1), and each temperature sensing element (7) is electrically connected with the control chip (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553128.9A CN110557856A (en) | 2018-05-31 | 2018-05-31 | Heating wire coil structure and electromagnetic stove with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810553128.9A CN110557856A (en) | 2018-05-31 | 2018-05-31 | Heating wire coil structure and electromagnetic stove with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110557856A true CN110557856A (en) | 2019-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810553128.9A Pending CN110557856A (en) | 2018-05-31 | 2018-05-31 | Heating wire coil structure and electromagnetic stove with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110557856A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111629467A (en) * | 2020-05-24 | 2020-09-04 | 哈尔滨理工大学 | Electromagnetic heating device based on multiple coils and temperature control method thereof |
| CN114173440A (en) * | 2020-09-10 | 2022-03-11 | 佛山市顺德区美的电热电器制造有限公司 | Coil disc assembly and electromagnetic heating device |
| WO2024214403A1 (en) * | 2023-04-14 | 2024-10-17 | 国立大学法人東京海洋大学 | Induction heating device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190268A (en) * | 1992-01-10 | 1993-07-30 | Fuji Electric Co Ltd | Electromagnetic induction heating device for multiport range |
| JPH10116681A (en) * | 1996-10-11 | 1998-05-06 | Matsushita Electric Ind Co Ltd | Induction heating cooking appliance |
| JPH10201614A (en) * | 1997-01-28 | 1998-08-04 | Matsushita Electric Ind Co Ltd | Rice cooker and electromagnetic cooker |
| EP0921711A1 (en) * | 1997-11-19 | 1999-06-09 | Therma Grossküchen Produktion AG | Induction cooking range with fully heatable surface |
| US20100237064A1 (en) * | 2009-03-20 | 2010-09-23 | Delta Electronics, Inc. | Electromagnetic module of electronic apparatus and manufacturing process thereof |
| CN202931589U (en) * | 2012-04-24 | 2013-05-08 | 美的集团股份有限公司 | Electromagnetic induction heating coil disc |
| US20160150600A1 (en) * | 2014-11-25 | 2016-05-26 | E.G.O. Elektro-Geraetebau Gmbh | Induction hob and method for controlling an induction hob |
| CN208479981U (en) * | 2018-05-31 | 2019-02-05 | 宁波方太厨具有限公司 | A kind of heating spool rest structure and application have the electromagnetic stove of the heating spool rest structure |
-
2018
- 2018-05-31 CN CN201810553128.9A patent/CN110557856A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05190268A (en) * | 1992-01-10 | 1993-07-30 | Fuji Electric Co Ltd | Electromagnetic induction heating device for multiport range |
| JPH10116681A (en) * | 1996-10-11 | 1998-05-06 | Matsushita Electric Ind Co Ltd | Induction heating cooking appliance |
| JPH10201614A (en) * | 1997-01-28 | 1998-08-04 | Matsushita Electric Ind Co Ltd | Rice cooker and electromagnetic cooker |
| EP0921711A1 (en) * | 1997-11-19 | 1999-06-09 | Therma Grossküchen Produktion AG | Induction cooking range with fully heatable surface |
| US20100237064A1 (en) * | 2009-03-20 | 2010-09-23 | Delta Electronics, Inc. | Electromagnetic module of electronic apparatus and manufacturing process thereof |
| CN202931589U (en) * | 2012-04-24 | 2013-05-08 | 美的集团股份有限公司 | Electromagnetic induction heating coil disc |
| US20160150600A1 (en) * | 2014-11-25 | 2016-05-26 | E.G.O. Elektro-Geraetebau Gmbh | Induction hob and method for controlling an induction hob |
| CN208479981U (en) * | 2018-05-31 | 2019-02-05 | 宁波方太厨具有限公司 | A kind of heating spool rest structure and application have the electromagnetic stove of the heating spool rest structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111629467A (en) * | 2020-05-24 | 2020-09-04 | 哈尔滨理工大学 | Electromagnetic heating device based on multiple coils and temperature control method thereof |
| CN114173440A (en) * | 2020-09-10 | 2022-03-11 | 佛山市顺德区美的电热电器制造有限公司 | Coil disc assembly and electromagnetic heating device |
| WO2024214403A1 (en) * | 2023-04-14 | 2024-10-17 | 国立大学法人東京海洋大学 | Induction heating device |
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