JPH01122592A - Electromagnetic coil - Google Patents
Electromagnetic coilInfo
- Publication number
- JPH01122592A JPH01122592A JP28001687A JP28001687A JPH01122592A JP H01122592 A JPH01122592 A JP H01122592A JP 28001687 A JP28001687 A JP 28001687A JP 28001687 A JP28001687 A JP 28001687A JP H01122592 A JPH01122592 A JP H01122592A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- coil
- superconducting
- film coil
- electromagnetic 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
- 239000010409 thin film Substances 0.000 claims abstract description 77
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 4
- 230000005291 magnetic effect Effects 0.000 claims description 25
- 230000035699 permeability Effects 0.000 claims description 11
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 239000011810 insulating material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000020169 heat generation Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 4
- 230000002411 adverse Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はうず電流を用いて加熱する電磁調理器などに用
いる電磁コイルに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electromagnetic coil used in an electromagnetic cooker that uses eddy current for heating.
従来の技術
以下図面を参照しながら、従来の電磁コイルについて説
明する。第６図ｔａ＞ （ｂ）は従来の電磁コイルの平
面図および断面図である。第６図は電磁調理器などに用
いる平板の電磁コイルを示しており、また作図および説
明を容易にするため、コイルの巻数を３巻としている。BACKGROUND OF THE INVENTION A conventional electromagnetic coil will be described below with reference to the drawings. FIG. 6(b) is a plan view and a sectional view of a conventional electromagnetic coil. FIG. 6 shows a flat electromagnetic coil used in an electromagnetic cooker, and the number of turns of the coil is three for ease of drawing and explanation.
また以下の図面において拡大あるいは縮小した部分が存
在する。第６図において１は高周波電流の表皮効果によ
る損失を防ぐために径０．５＋ｒ＋＋程度の導線を複数
本よりあわせたリッツ線、２は前記リッツ線を被覆する
ための絶縁被膜である。前記電磁コイルはリッツ線に高
周波電流を印加することにより電磁コイルの中央部をと
おる磁界が発生する。前記磁界により前記電磁コイル上
におかれたなべ底にうず電流が生じ、前記うず電流によ
りなべ底が加熱される。In addition, there are enlarged or reduced portions in the drawings below. In FIG. 6, numeral 1 is a litz wire made by twisting together a plurality of conducting wires with a diameter of about 0.5+r++ in order to prevent loss due to the skin effect of high-frequency current, and numeral 2 is an insulating coating for covering the litz wire. The electromagnetic coil generates a magnetic field passing through the center of the electromagnetic coil by applying a high frequency current to the litz wire. The magnetic field generates an eddy current in the bottom of the pan placed on the electromagnetic coil, and the eddy current heats the bottom of the pan.
発明が解決しようとする問題点
しかしながら従来の電磁コイルでは、リンツ線を平面上
に加工する必要がある。前記加工のためにコストが増大
する。また、リンツ線に高周波電流を流す必要があるた
め、前記高周波電流により、リンツ線での発熱が生じ、
磁界発生の効率が非常に悪く、−窓以上の強さの磁界を
発生させることができなかった。Problems to be Solved by the Invention However, in the conventional electromagnetic coil, it is necessary to process the Linz wire into a flat surface. Said processing increases costs. In addition, since it is necessary to flow a high frequency current through the Linz wire, the high frequency current causes heat generation in the Linz wire.
The efficiency of magnetic field generation was very poor, and it was not possible to generate a magnetic field stronger than that of the - window.
本発明は上記問題点に鑑み、強い磁界を効率よく発生で
き、かつ電磁調理器などに取り付けが容易な電磁コイル
を提供するものである。In view of the above problems, the present invention provides an electromagnetic coil that can efficiently generate a strong magnetic field and that can be easily attached to an electromagnetic cooker or the like.
問題点を解決するための手段
上記問題点を解決するため本発明の電磁コイルは絶縁基
板上に導電性物質からなる第１の薄膜コイルを形成し、
前記第１の薄膜コイル上に超電導物質からなる第２の薄
膜コイルを形成したものである。Means for Solving the Problems In order to solve the above problems, the electromagnetic coil of the present invention includes a first thin film coil made of a conductive material formed on an insulating substrate,
A second thin film coil made of a superconducting material is formed on the first thin film coil.
作用
本発明は絶縁基板上に薄膜コイルを形成しているため、
前記絶縁基板を電磁調理器の内部に取りつけるだけでよ
く、取りあつかいが非常に容易である。また、超電導物
質からなる薄膜コイルを形成しているため、熱損失なく
強磁界を発生させることができ、通常の導電体物質と超
電導物質からなる薄膜コイルを形成しているため、超電
導物質からなる薄膜コイルの超電導状態が破れたとき、
発熱により断線することを防ぐことができる。Function: Since the present invention forms a thin film coil on an insulating substrate,
It is only necessary to attach the insulating substrate inside the electromagnetic cooker, and handling is very easy. In addition, because it forms a thin film coil made of superconducting material, it is possible to generate a strong magnetic field without heat loss, and because it forms a thin film coil made of normal conductive material and superconducting material, When the superconducting state of the thin film coil is broken,
This can prevent wire breakage due to heat generation.
実施例
以下本発明の電磁コイルの一実施例について図面を参照
しながら説明する。なお本発明のいう薄膜とはスパッタ
などを用いて形成される薄膜の他に、スクリーン印刷技
術、塗布技術などで形成される通常厚膜と呼ばれるもの
などをも含む。第１図（ａ） （ｂ）は本発明の第１の
実施例における電磁コイルの平面図および断面図である
。第１図において３はセラミック基板などの絶縁基板、
４は銀ペーストあるいは銅ペーストなどを焼成して形成
した導電性物質からなる薄膜コイル（以後、導電薄膜コ
イルと呼ぶ。）、５は超電導物質からなる薄膜コイル（
以後、超電導薄膜コイルと呼ぶ。）、６はガラスあるい
は樹脂などからなる絶縁被膜、７は電磁コイルの中央部
に形成された薄膜コイルの一端を周辺部に引き出すため
に形成された絶縁膜である。EXAMPLE Hereinafter, an example of the electromagnetic coil of the present invention will be described with reference to the drawings. Note that the thin film referred to in the present invention includes not only a thin film formed using sputtering or the like, but also what is normally called a thick film formed by screen printing technology, coating technology, or the like. FIGS. 1(a) and 1(b) are a plan view and a sectional view of an electromagnetic coil in a first embodiment of the present invention. In Fig. 1, 3 is an insulating substrate such as a ceramic substrate;
4 is a thin film coil made of a conductive material formed by firing silver paste or copper paste (hereinafter referred to as a conductive thin film coil); 5 is a thin film coil made of a superconducting material (hereinafter referred to as a conductive thin film coil);
Hereinafter, this will be referred to as a superconducting thin film coil. ), 6 is an insulating coating made of glass or resin, and 7 is an insulating film formed to draw out one end of the thin film coil formed in the center of the electromagnetic coil to the periphery.
第１図で明らかなように絶縁基板３上に導電薄膜コイル
４および超電導薄膜コイル５を形成し、前記薄膜コイル
上にガラスなどの絶縁被膜６を形成している。前記絶縁
被膜６は、薄膜コイル４および５を外部からの機械的応
力およびふきこぼれによる影響などから保護するととも
に、なべ底からの放射熱などにより加熱されることを防
いでいる。また超電導物質からなる薄膜コイルの化学的
変化を防止する効果もある。As is clear from FIG. 1, a conductive thin film coil 4 and a superconducting thin film coil 5 are formed on an insulating substrate 3, and an insulating coating 6 such as glass is formed on the thin film coil. The insulating coating 6 protects the thin film coils 4 and 5 from external mechanical stress and the effects of boiling over, and prevents them from being heated by radiant heat from the bottom of the pan. It also has the effect of preventing chemical changes in thin film coils made of superconducting materials.
本発明の電磁コイルの機能は従来の電磁コイルと同様で
あり、薄膜コイル４，５に高周波電流を印加することに
より磁界を発生させることができる。通常状態のとき、
前記高周波電流は超電導薄膜コイル５を流れる。何らか
の影響により超電導薄膜コイル５の超電導状態がやぶれ
たとき、導電薄膜コイル４に前記電流がながれ、発熱に
よる断線から保護する。The function of the electromagnetic coil of the present invention is similar to that of a conventional electromagnetic coil, and a magnetic field can be generated by applying a high frequency current to the thin film coils 4 and 5. When in normal condition,
The high frequency current flows through the superconducting thin film coil 5. When the superconducting state of the superconducting thin film coil 5 is broken due to some influence, the current flows through the conductive thin film coil 4 to protect it from disconnection due to heat generation.
第２図（ａ） （ｂ）は本発明の第２の実施例における
電磁コイルの平面図および断面図である。第２図におい
て８はフェライト、センダストなどからなる高透磁率薄
膜または基板である。本発明の第２の実施例と第１の実
施例の相違は高透磁率薄膜または基板８を付加した点に
ある。前記高透磁率薄膜または基板８の形成方法として
は、フェライトなどをスパッタなどの蒸着技術で蒸着あ
るいは、フェライトで構成された板を絶縁基板３に取り
付けることにより形成する。第２図の実施例では発生す
る磁束は第２図の点線で示すように高透磁率薄膜または
基板８中を透過する。したがって高透磁率薄膜または基
板８の下部には、磁束の影響を受けないようにすること
ができる。ゆえに、電［１１理器内で本発明の電磁コイ
ルを取り付けることにより、電磁コイルの下部に形成さ
れた電子回路に磁束の影響をうけることおよび下部の金
属体が加熱されることを防止することができる。FIGS. 2(a) and 2(b) are a plan view and a sectional view of an electromagnetic coil in a second embodiment of the present invention. In FIG. 2, 8 is a high magnetic permeability thin film or substrate made of ferrite, sendust, or the like. The difference between the second embodiment of the present invention and the first embodiment is that a high magnetic permeability thin film or substrate 8 is added. The high magnetic permeability thin film or substrate 8 may be formed by depositing ferrite or the like using a vapor deposition technique such as sputtering, or by attaching a plate made of ferrite to the insulating substrate 3. In the embodiment of FIG. 2, the generated magnetic flux is transmitted through the high magnetic permeability thin film or substrate 8 as indicated by the dotted line in FIG. Therefore, the high magnetic permeability thin film or the lower part of the substrate 8 can be made unaffected by magnetic flux. Therefore, by installing the electromagnetic coil of the present invention in an electric appliance, it is possible to prevent the electronic circuit formed at the bottom of the electromagnetic coil from being affected by magnetic flux and to prevent the metal body at the bottom from being heated. Can be done.
第３図（ａ） （ｂｌは本発明の第３の実施例における
電磁コイルの平面図および断面図である。第３図におい
て９は超電導物質からなる薄膜（以後、超電導薄膜と呼
ぶ。）である。本発明の第３の実施例と第２の実施例の
相違は高透磁率薄膜または基板８上に超電導薄膜９を形
成した点にある。第３の実施例では超電導薄膜９を形成
したことにより前記超電導薄膜の反磁性の効果によりさ
らに本発明の電磁コイルの下部に磁束の影響をなくする
ことができる。FIG. 3(a) (bl is a plan view and a cross-sectional view of an electromagnetic coil in a third embodiment of the present invention. In FIG. 3, 9 is a thin film made of a superconducting substance (hereinafter referred to as a superconducting thin film). The difference between the third embodiment of the present invention and the second embodiment is that a superconducting thin film 9 is formed on a high magnetic permeability thin film or a substrate 8. In the third embodiment, a superconducting thin film 9 is formed on a high magnetic permeability thin film or a substrate 8. As a result, the effect of magnetic flux on the lower part of the electromagnetic coil of the present invention can be further eliminated due to the diamagnetic effect of the superconducting thin film.
なお本発明の電磁コイルは第４図の断面図に示すように
薄膜コイ゛ルの形成は導電薄膜コイルと超電導薄膜コイ
ルの２層に限定するものではなく、導電薄膜コイル４上
に超電導薄膜コイル５を形成し、さらに導電薄膜コイル
４を形成してもよく、さらに多層化してもよい。前記多
層化は超電導状態あるいは超電導状態を維持するのに効
果がある。As shown in the sectional view of FIG. 4, in the electromagnetic coil of the present invention, the formation of the thin film coil is not limited to two layers of a conductive thin film coil and a superconducting thin film coil, but a superconducting thin film coil is formed on the conductive thin film coil 4. 5 may be formed, and then the conductive thin film coil 4 may be further formed, or the conductive thin film coil 4 may be further formed into multiple layers. The multilayer structure is effective in maintaining the superconducting state or the superconducting state.
また本発明の実施例において導電薄膜コイル４上に超電
導薄膜コイル５を形成するとしたが、これに限定するも
のではなく、第５図に示すように超電導薄膜コイル５上
に導電薄膜コイル４を形成してもよい。Furthermore, in the embodiment of the present invention, the superconducting thin film coil 5 is formed on the conductive thin film coil 4, but the present invention is not limited to this, and the conductive thin film coil 4 is formed on the superconducting thin film coil 5 as shown in FIG. You may.
また、上記実施例中、超電導体物質としては、たとえば
、いわゆる常温超電導体を用いるか、または、超電導臨
界温度が室温と液体窒素の沸点の間の材料を用いて液体
窒素で冷却するか（図示せず）、もしくは超電導臨界温
度が液体窒素の沸点以下の材料を用いて液体ヘリウムで
冷却するか（図示せず）をすればよい。常温超電導体の
一例としては、組成としてストロンチウム（Ｓｒ）、バ
リウム（Ｂａ）、イツトリウム（Ｙ）および銅（Ｃｕ）
を夫々１：１：１：３の比率で含有するセラミック酸化
物がある。その製造方法の一例としては、出発原料とし
てＳ ｒ ＣＯ：ｌ 、Ｂ ａ ＣＯ３、Ｙ２０３ 、
ＣｕＯの夫々の粉体を所定量混合し、粉砕し、空気中に
おいて９２０℃で５時間焼成する。In addition, in the above examples, as the superconductor material, for example, a so-called room-temperature superconductor is used, or a material whose superconducting critical temperature is between room temperature and the boiling point of liquid nitrogen is used and cooled with liquid nitrogen (Fig. (not shown), or a material with a superconducting critical temperature below the boiling point of liquid nitrogen may be used and cooled with liquid helium (not shown). Examples of room-temperature superconductors include strontium (Sr), barium (Ba), yttrium (Y), and copper (Cu).
There is a ceramic oxide containing these in a ratio of 1:1:1:3, respectively. As an example of the manufacturing method, S r CO:l, B a CO3, Y203,
A predetermined amount of each powder of CuO is mixed, pulverized, and fired in air at 920° C. for 5 hours.
この焼成、粉砕を３回繰り返し、均質性を高める。This baking and pulverization process is repeated three times to improve homogeneity.
このようにして処理した混合粉体を冷間圧縮成型した後
、空気中において１０００℃で５時間焼成し、徐冷する
ことにより製造する。After cold compression molding the mixed powder treated in this way, it is produced by firing in air at 1000° C. for 5 hours and slowly cooling.
発明の効果
本発明は絶縁基板上に導電導物質からなる第１の薄膜コ
イルと超電導物質からなる第２の薄膜コイルを形成した
ものであるから、従来の電磁コイルのように電磁コイル
を平板上にする必要がなく、平板上にするコストが低減
され、また前記絶縁基板を電磁調理器などの内部に取り
つけるだけでよく、いたって取り扱いが容易である。ま
た超電導薄膜コイルを使用しているため、強磁界を発生
でき、高周波電流の磁束への変換効率が非常に高い。Effects of the Invention Since the present invention forms a first thin film coil made of a conductive material and a second thin film coil made of a superconducting material on an insulating substrate, the electromagnetic coil can be placed on a flat plate like a conventional electromagnetic coil. This reduces the cost of forming a flat plate, and the insulating substrate only needs to be mounted inside an electromagnetic cooker, making it easy to handle. Additionally, because it uses superconducting thin-film coils, it can generate a strong magnetic field and has extremely high efficiency in converting high-frequency current into magnetic flux.
また導電薄膜コイルと超電導コイルと多層化しているた
め、超電導コイルの超電導状態が破れたさいも発熱によ
り超電導コイルが断線するという恐れがない。また、薄
膜コイル上を絶縁被膜６で被覆することにり、薄膜コイ
ル４および５を外部の機械的応力、なべなどからふきこ
ぼれによる影響およびなべ底からの放射熱などにより加
熱されることを防ぐことができる。また絶縁基板３の下
に高透磁率薄膜または基板８を形成することにより、前
記高透磁率薄膜または基板８下に磁束の影響をおよぼす
ことを防ぐことができる。以上のことより本発明の効果
は大である。Furthermore, since the superconducting coil is multilayered with a conductive thin film coil and a superconducting coil, even if the superconducting state of the superconducting coil is broken, there is no fear that the superconducting coil will be disconnected due to heat generation. Furthermore, by covering the thin film coils with the insulating coating 6, the thin film coils 4 and 5 can be prevented from being heated by external mechanical stress, the effects of boiling over from a pan, etc., and radiant heat from the bottom of the pan. Can be done. Further, by forming a high magnetic permeability thin film or substrate 8 under the insulating substrate 3, it is possible to prevent the magnetic flux from exerting an influence under the high magnetic permeability thin film or substrate 8. From the above, the effects of the present invention are significant.
第１図（ａ） （ｂ）は本発明の第１の実施例における
電磁コイルの平面図および断面図、第２図（ａ） （ｂ
）は本発明の第２の実施例における電磁コイルの平面図
および断面図、第３図（ａ） （ｂ）は本発明の第３の
実施例における電磁コイルの平面図および断面図、第４
図および第５図は本発明の電磁コイルの断面図、第６図
（ａ） （ｂ）は従来の電磁コイルの平面図および断面
図である。
１・・・・・・リンツ線、２・・・・・・絶縁被膜、３
・・・・・・絶縁基板、４・・・・・・導電薄膜コイル
、５・・・・・・超電導薄膜コイル、６・・・・・・絶
縁被膜、７・・・・・・絶縁膜、８・旧・・高透磁率薄
膜または基板、９・・・・・・超電導薄膜。FIGS. 1(a) and (b) are a plan view and a sectional view of an electromagnetic coil according to a first embodiment of the present invention, and FIGS. 2(a) and (b) are
) are a plan view and a sectional view of the electromagnetic coil in the second embodiment of the present invention, FIGS. 3(a) and (b) are a plan view and a sectional view of the electromagnetic coil in the third embodiment of the invention, and
5 and 5 are sectional views of an electromagnetic coil according to the present invention, and FIGS. 6(a) and 6(b) are a plan view and a sectional view of a conventional electromagnetic coil. 1... Linz wire, 2... Insulating coating, 3
...Insulating substrate, 4 ... Conductive thin film coil, 5 ... Superconducting thin film coil, 6 ... Insulating coating, 7 ... Insulating film , 8. Old... High magnetic permeability thin film or substrate, 9... Superconducting thin film.
Claims (6)
ルを形成し、前記第１の薄膜コイル上に超電導物質から
なる第２の薄膜コイルを形成していることを特徴とする
電磁コイル。(1) An electromagnetic coil characterized in that a first thin film coil made of a conductive material is formed on an insulating substrate, and a second thin film coil made of a superconducting material is formed on the first thin film coil. .
質にて被覆していることを特徴とする特許請求の範囲第
（１）項記載の電磁コイル。(2) The electromagnetic coil according to claim (1), wherein the first and second thin film coils are coated with a glass-based insulating material.
特許請求の範囲第（１）項記載の電磁コイル。(3) The electromagnetic coil according to claim (1), wherein the insulating substrate is an alumina substrate.
高透磁率の物質からなる第１の薄膜又は基板を形成して
いることを特徴とする特許請求の範囲第（１）項記載の
電磁コイル。(4) Claim (1) characterized in that the first thin film or substrate made of a material with high magnetic permeability is formed on the back surface of the insulating substrate on which the first thin film coil is formed. electromagnetic coil.
２の薄膜を形成していることを特徴とする特許請求の範
囲第（４）項記載の電磁コイル。(5) The electromagnetic coil according to claim (4), characterized in that a second thin film made of a superconducting material is formed on the first thin film or the substrate.
る特許請求の範囲第（４）項記載の電磁コイル。(6) The electromagnetic coil according to claim (4), wherein the first thin film is made of ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001687A JPH01122592A (en) | 1987-11-05 | 1987-11-05 | Electromagnetic coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001687A JPH01122592A (en) | 1987-11-05 | 1987-11-05 | Electromagnetic coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01122592A true JPH01122592A (en) | 1989-05-15 |
Family
ID=17619126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28001687A Pending JPH01122592A (en) | 1987-11-05 | 1987-11-05 | Electromagnetic coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01122592A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009050337A1 (en) * | 2009-10-22 | 2011-04-28 | GM Global Technology Operations, Inc., Detroit | Component unit for a fuel system of an internal combustion engine and internal combustion engine |
| CN102734847A (en) * | 2011-04-07 | 2012-10-17 | 广州通泰能源科技有限公司 | Superconductive heater |
-
1987
- 1987-11-05 JP JP28001687A patent/JPH01122592A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009050337A1 (en) * | 2009-10-22 | 2011-04-28 | GM Global Technology Operations, Inc., Detroit | Component unit for a fuel system of an internal combustion engine and internal combustion engine |
| CN102734847A (en) * | 2011-04-07 | 2012-10-17 | 广州通泰能源科技有限公司 | Superconductive heater |
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