JP2010020963A - Spiral coil - Google Patents

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JP2010020963A
JP2010020963A JP2008178948A JP2008178948A JP2010020963A JP 2010020963 A JP2010020963 A JP 2010020963A JP 2008178948 A JP2008178948 A JP 2008178948A JP 2008178948 A JP2008178948 A JP 2008178948A JP 2010020963 A JP2010020963 A JP 2010020963A
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wire
coil
spiral coil
litz
braided
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JP5121606B2 (en
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Chisato Ikeda
千里 池田
Tadashi Takano
忠司 鷹野
Akihiko Yamagishi
明彦 山岸
Yoshio Ko
義雄 高
Kazumasa Maruyama
和正 丸山
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Totoku Electric Co Ltd
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Totoku Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a spiral coil in which eddy current loss is less, cost can be reduced, and both demand of coil outer diameter and demand of numbers of winding can be satisfied easily, and furthermore, superior coil shape holding characteristic can be obtained. <P>SOLUTION: A flat tubular braided litz wire (10) is spirally wound around in which the litz wires are made as the basic unit electric wire of braid wherein strands of a self-fusing insulated electric wire are twisted so that the long sides of the cross-sectional face of the braided wires mutually face by pinching an insulated thin plate (20) between respective turns while keeping the long sides in parallel with the winding axis, and mutual strands and the braided litz wire (10) with the insulated thin plate (20) are heat-fused. The eddy current loss can be reduced. The tubular braided wire which is inexpensively obtained can be transformed and used. Both of coil outer diameter conditions and conditions of the number of winding can be satisfied. Coil shape can be retained integrally. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、渦巻きコイルに関し、さらに詳しくは、渦電流損が小さく、コストを低減でき、コイル外径の要求と巻数の要求の両方を容易に満足させることができ、さらに良好なコイル形状保持性が得られる渦巻きコイルに関する。   The present invention relates to a spiral coil. More specifically, the present invention has low eddy current loss, can reduce costs, can easily satisfy both the requirements of the coil outer diameter and the number of turns, and better coil shape retention. The present invention relates to a spiral coil.

従来、平角線の長辺同士が対面するように平角線を渦巻き状に巻回し且つ各ターン間に絶縁材を挟んだ誘導加熱コイルが知られている（例えば、特許文献１参照。）。
他方、複数本の絶縁被覆銅線を断面平角形状に編んだ編組線をボビンに巻回した電子部品が知られている（例えば、特許文献２参照。）。
特開平９−２８９０８０号公報（請求項１，７） 特開２００２−１４１２３２号公報 Conventionally, an induction heating coil in which a flat wire is wound in a spiral shape so that the long sides of the flat wire face each other and an insulating material is sandwiched between the turns is known (for example, see Patent Document 1).
On the other hand, there is known an electronic component in which a braided wire obtained by knitting a plurality of insulation-coated copper wires into a rectangular cross section is wound around a bobbin (for example, see Patent Document 2).
JP-A-9-289080 (Claims 1 and 7) JP 2002-141232 A

上記従来の誘導加熱コイルでは、平角線を用いているため、渦電流損が大きい問題点があった。
他方、上記従来の電子部品では、複数本の絶縁被覆銅線を断面平角形状に編んだ編組線を用いるため、渦電流損を小さく出来る。
両者を組み合わせると、渦電流損の小さな誘導加熱コイルとして、複数本の絶縁被覆銅線を断面平角形状に編んだ編組線を渦巻き状に巻回した誘導加熱コイルが考えられる。
しかし、複数本の絶縁被覆銅線を断面平角形状に編んだ編組線は特殊部品であり、コスト高になる問題点がある。 The conventional induction heating coil has a problem that eddy current loss is large because a rectangular wire is used.
On the other hand, in the above-mentioned conventional electronic component, since a braided wire obtained by braiding a plurality of insulation-coated copper wires into a rectangular cross section is used, eddy current loss can be reduced.
When both are combined, as an induction heating coil with small eddy current loss, an induction heating coil in which a braided wire obtained by knitting a plurality of insulation-coated copper wires in a rectangular cross section is wound in a spiral shape can be considered.
However, a braided wire obtained by braiding a plurality of insulation-coated copper wires into a rectangular cross section is a special part, and there is a problem that the cost is increased.

一方、渦巻きコイルは、多くが誘導加熱に用いられるが、加熱対象の形状に適合したコイル外径が要求される。例えば、鍋の底面直径に適合したコイル外径が要求される。また、所望の加熱電力と駆動周波数の関係からインダクタンスつまり巻数も要求される。例えば、加熱電力５００Ｗ，駆動周波数２０ｋＨｚ〜１００ｋＨｚで、１００ターン〜２０ターンが要求される。すなわち、コイル外径の要求と巻数の要求の両方を満足させる必要がある。一般に、コイル外径と線径から計算される最大巻数よりも要求される巻数が少ないため、コイル外径の要求と巻数の要求の両方を満足させるには、各ターン間に空隙を設ける必要がある。
しかし、各ターン間に空隙があると、コイル形状を保持するのが難しくなる問題点がある。 On the other hand, many spiral coils are used for induction heating, but a coil outer diameter suitable for the shape of the heating target is required. For example, a coil outer diameter suitable for the bottom diameter of the pan is required. Further, an inductance, that is, the number of turns, is also required from the relationship between desired heating power and driving frequency. For example, a heating power of 500 W, a driving frequency of 20 kHz to 100 kHz, and 100 to 20 turns are required. That is, it is necessary to satisfy both the requirements of the coil outer diameter and the number of turns. In general, since the required number of turns is less than the maximum number of turns calculated from the coil outer diameter and wire diameter, it is necessary to provide a gap between the turns in order to satisfy both the requirements of the coil outer diameter and the number of turns. is there.
However, if there is a gap between turns, there is a problem that it is difficult to maintain the coil shape.

そこで、本発明の目的は、渦電流損が小さく、コストを低減でき、コイル外径の要求と巻数の要求の両方を容易に満足させることができ、さらに良好なコイル形状保持性が得られる渦巻きコイルを提供することにある。   Therefore, the object of the present invention is to reduce the eddy current loss, reduce the cost, easily satisfy both the requirements of the outer diameter of the coil and the number of turns, and obtain a coil shape retaining property that is even better. To provide a coil.

第１の観点では、本発明は、自己融着絶縁電線の素線を撚って構成されているリッツ線を編組の基本単位電線とする扁平管状のリッツ線編組線が、各ターン間に絶縁材を挟んで、渦巻き状に巻かれ、且つ、前記素線同士および前記リッツ線編組線と前記絶縁材とが融着していることを特徴とする渦巻きコイルを提供する。
上記第１の観点による渦巻きコイルでは、編組線を用いているため、渦電流損を小さくすることが出来る。
また、比較的安価に入手可能な管状の編組線を扁平に変形させて用いることが出来るため、コストを低減できる。
また、リッツ線の素線数を増減することにより編組の基本単位電線の外径を調整できるので、扁平管状の編組線の長辺／短辺のサイズを調整できる。また、各ターン間に絶縁材を挟んでいるが、この絶縁材の厚さを調整できる。これらにより、渦巻きコイルのコイル外径の要求と巻数の要求の両方を容易に満足させることが出来る。
さらに、素線同士およびリッツ線編組線と絶縁材とが融着しているため、良好なコイル形状保持性が得られる。 In a first aspect, the present invention provides a flat tubular litz wire braided wire having a litz wire formed by twisting strands of a self-bonding insulated wire, insulated between the turns. A spiral coil is provided, which is wound in a spiral shape with a material interposed therebetween, and the strands, the Litz wire braided wire, and the insulating material are fused.
Since the spiral coil according to the first aspect uses a braided wire, eddy current loss can be reduced.
In addition, since a tubular braided wire that is available at a relatively low cost can be used by being deformed into a flat shape, the cost can be reduced.
Moreover, since the outer diameter of the basic unit electric wire of a braid can be adjusted by increasing / decreasing the number of strands of a litz wire, the size of the long side / short side of a flat tubular braided wire can be adjusted. In addition, an insulating material is sandwiched between the turns, and the thickness of the insulating material can be adjusted. As a result, it is possible to easily satisfy both the requirements of the coil outer diameter and the number of turns of the spiral coil.
Furthermore, since the strands, the litz wire braided wire, and the insulating material are fused, good coil shape retention is obtained.

第２の観点では、本発明は、前記第１の観点による渦巻きコイルにおいて、編組線断面の長辺同士が対面するように前記扁平管状のリッツ線編組線が渦巻き状に巻かれていることを特徴とする渦巻きコイルを提供する。
上記第２の観点による渦巻きコイルでは、編組線断面の長辺同士が対面するように編組線を渦巻き状に巻くため、短辺同士が対面するように巻く場合に比べて、コイル外径に対する最大巻数を増やすことが出来る。 In a second aspect, the present invention is the spiral coil according to the first aspect, wherein the flat tubular litz wire braided wire is wound in a spiral shape so that the long sides of the braided wire cross section face each other. A spiral coil is provided.
In the spiral coil according to the second aspect, the braided wire is wound in a spiral shape so that the long sides of the braided wire cross section face each other, so that the maximum with respect to the outer diameter of the coil is larger than when wound so that the short sides face each other. The number of turns can be increased.

第３の観点では、本発明は、前記第２の観点による渦巻きコイルにおいて、前記長辺が巻き軸に対し傾斜して巻かれていることを特徴とする渦巻きコイルを提供する。
上記第３の観点による渦巻きコイルでは、編組線断面の長辺同士が対面するように且つ長辺が巻き軸（コイル面に垂直な軸）に対し傾斜して渦巻き状に巻くため、短辺同士が対面するように巻く場合に比べてコイル外径に対する最大巻数を増やすことが出来る。また、長辺同士が対面するように且つ長辺が巻き軸に対し平行に巻く場合に比べてコイル外径に対する最大巻数を減らすことが出来る。 In a third aspect, the present invention provides the spiral coil according to the second aspect, wherein the long side is wound with an inclination with respect to a winding axis.
In the spiral coil according to the third aspect, the long sides of the braided wire cross section face each other and the long sides are inclined with respect to the winding axis (axis perpendicular to the coil surface) and wound in a spiral shape. The maximum number of turns with respect to the outer diameter of the coil can be increased as compared with the case of winding so as to face each other. Further, the maximum number of turns with respect to the outer diameter of the coil can be reduced as compared with the case where the long sides are wound parallel to the winding axis so that the long sides face each other.

第４の観点では、本発明は、前記第１の観点による渦巻きコイルにおいて、編組線断面の短辺同士が対面するように前記扁平管状のリッツ線編組線が渦巻き状に巻かれていることを特徴とする渦巻きコイルを提供する。
上記第４の観点による渦巻きコイルでは、編組線断面の短辺同士が対面するように編組線を渦巻き状に巻くため、長辺同士が対面するように巻く場合に比べて、コイル外径に対する最大巻数を減らすことが出来る。 In a fourth aspect, the present invention is the spiral coil according to the first aspect, wherein the flat tubular litz wire braided wire is wound in a spiral shape so that the short sides of the braided wire cross section face each other. A spiral coil is provided.
In the spiral coil according to the fourth aspect, since the braided wire is wound in a spiral shape so that the short sides of the braided wire cross section face each other, the maximum with respect to the coil outer diameter is compared with the case where the long sides are wound facing each other. The number of turns can be reduced.

第５の観点では、本発明は、前記第１から前記第４のいずれかの観点による渦巻きコイルにおいて、前記絶縁材の少なくとも一対の対向面に熱融着材が付着されていることを特徴とする渦巻きコイルを提供する。
上記第５の観点による渦巻きコイルでは、リッツ線編組線と絶縁材の融着を確実にすることが出来る。 In a fifth aspect, the present invention provides the spiral coil according to any one of the first to fourth aspects, wherein a heat-sealing material is attached to at least a pair of opposing surfaces of the insulating material. A spiral coil is provided.
In the spiral coil according to the fifth aspect, the fusion of the litz wire braided wire and the insulating material can be ensured.

第６の観点では、本発明は、前記第１から前記第５のいずれかの観点による渦巻きコイルにおいて、前記絶縁材は、軟磁性特性を有する材料製であることを特徴とする渦巻きコイルを提供する。
上記第６の観点による渦巻きコイルでは、磁気抵抗を減らすことが出来る。また、インダクタンスが増加することによってＱが増加し、損失改善になる。 In a sixth aspect, the present invention provides the spiral coil according to any one of the first to fifth aspects, wherein the insulating material is made of a material having a soft magnetic property. To do.
In the spiral coil according to the sixth aspect, the magnetic resistance can be reduced. Further, Q increases as the inductance increases, and loss is improved.

第７の観点では、本発明は、前記第１から第５のいずれかの観点による渦巻きコイルにおいて、前記絶縁材は、プラスティック材に無機フィラーを混在させた材料製であることを特徴とする渦巻きコイルを提供する。
上記第７の観点による渦巻きコイルでは、絶縁材の熱伝導度を大きくすることが出来るので、温度均一性および放熱性改善になる。 In a seventh aspect, the present invention provides the spiral coil according to any one of the first to fifth aspects, wherein the insulating material is made of a material in which an inorganic filler is mixed in a plastic material. Provide a coil.
In the spiral coil according to the seventh aspect, since the thermal conductivity of the insulating material can be increased, temperature uniformity and heat dissipation are improved.

本発明の渦巻きコイルによれば、渦電流損を減少でき、コストを低減でき、コイル外径の要求と巻数の要求の両方を容易に満足させることができ、さらに良好なコイル形状保持性が得られる。   According to the spiral coil of the present invention, the eddy current loss can be reduced, the cost can be reduced, both the requirement of the outer diameter of the coil and the requirement of the number of turns can be easily satisfied, and further good coil shape retention can be obtained. It is done.

以下、図に示す実施の形態により本発明をさらに詳細に説明する。なお、これにより本発明が限定されるものではない。   Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

図１は、実施例１に係る渦巻きコイル１０１を示す上面図である。図２は、図１のＡ−Ａ’断面図である。
この渦巻きコイル１０１は、自己融着絶縁電線の素線を撚って構成されているリッツ線を編組の基本単位電線とする扁平管状のリッツ線編組線１０を、各ターン間に絶縁薄板２０を挟んで、編組線断面の長辺同士が対面するように且つ長辺を巻き軸に対し平行にして渦巻き状に巻き、素線同士およびリッツ線編組線１０と絶縁薄板２０とを熱融着させたものである。
コイル外径は例えば２８ｃｍであり、コイル内径は例えば４ｃｍであり、巻数は例えば４０ターンである。
リッツ線編組線１０の長辺の長さｗは例えば１０ｍｍであり、短辺の長さｔは例えば２．５ｍｍであり、絶縁薄板２０の厚さは例えば０．５ｍｍである。 FIG. 1 is a top view illustrating the spiral coil 101 according to the first embodiment. 2 is a cross-sectional view taken along line AA ′ of FIG.
The spiral coil 101 includes a flat tubular litz wire braided wire 10 having a litz wire formed by twisting strands of a self-bonding insulated wire as a basic unit wire of the braid, and an insulating thin plate 20 between the turns. The coiled wire is wound spirally so that the long sides of the braided wire cross section face each other and parallel to the winding axis, and the strands and the litz wire braided wire 10 and the insulating thin plate 20 are heat-sealed. It is a thing.
The coil outer diameter is, for example, 28 cm, the coil inner diameter is, for example, 4 cm, and the number of turns is, for example, 40 turns.
The length w of the long side of the litz wire braided wire 10 is, for example, 10 mm, the length t of the short side is, for example, 2.5 mm, and the thickness of the insulating thin plate 20 is, for example, 0.5 mm.

図２に示すように、高周波電源Ｇから渦巻きコイル１０１に給電し、渦巻きコイル１０１の上面直上に置かれた鍋などを誘導加熱する。   As shown in FIG. 2, power is supplied to the spiral coil 101 from the high-frequency power source G, and a pan or the like placed immediately above the upper surface of the spiral coil 101 is induction-heated.

図３は、リッツ線編組線１０の拡大断面図である。
リッツ線編組線１０は、例えば外径０．５ｍｍのリッツ線２を４８本、１周編みピッチ４０ｍｍで外径８ｍｍの円管状に編組し、扁平に変形加工したものである。
なお、図は模式図である（例えばリッツ線２の本数は実数通りに図示したものではない）。 FIG. 3 is an enlarged cross-sectional view of the litz wire braided wire 10.
The litz wire braided wire 10 is formed by braiding, for example, 48 litz wires 2 having an outer diameter of 0.5 mm into a circular tube having an outer diameter of 8 mm at a single knitting pitch of 40 mm and deformed into a flat shape.
In addition, the figure is a schematic diagram (for example, the number of the litz wires 2 is not illustrated as a real number).

図４は、リッツ線２の拡大斜視図である。
リッツ線２は、例えば線径０．１ｍｍの自己融着絶縁電線１を１９本、撚りピッチ２０ｍｍで撚ったものである。 FIG. 4 is an enlarged perspective view of the litz wire 2.
The litz wire 2 is, for example, 19 self-bonding insulated wires 1 having a wire diameter of 0.1 mm twisted at a twist pitch of 20 mm.

絶縁薄板２０は、プラスチック材（例えばポリエチレン）に軟磁性粉（例えば軟磁性フェライト粉）や無機フィラー（例えばシリカ，アルミナ，窒化硼素）を混入したテープ状物の両面に熱融着材（例えば、ポリビニールブチラールとフェルール樹脂の約１３：４の混合体をアルコール系溶剤で溶融したもの）を塗布した物である。   The insulating thin plate 20 is made of a heat-bonding material (for example, a plastic material (for example, polyethylene) on both sides of a tape-like material in which soft magnetic powder (for example, soft magnetic ferrite powder) or an inorganic filler (for example, silica, alumina, boron nitride) is mixed. A product obtained by applying a 13: 4 mixture of polyvinyl butyral and ferrule resin melted with an alcohol solvent).

実施例１の渦巻きコイル１０１によれば次の効果が得られる。
（１）リッツ線編組線１０を用いているため、渦電流損を小さくすることが出来る。
（２）比較的安価に入手可能な円管状のリッツ線編組線を扁平に変形させて用いるため、コストを低減できる。
（３）リッツ線２の自己融着絶縁電線１の数を増減することにより編組の基本単位電線となるリッツ線外径を調整できるので、扁平管状のリッツ線編組線１０の長辺の長さｗ／短辺の長さｔを調整できる。また、各ターン間に挟んでいる絶縁薄板２０の厚さを調整できる。これらにより、渦巻きコイル１０１のコイル外径の要求と巻数の要求の両方を容易に満足させることが出来る。
（４）リッツ線２の自己融着絶縁電線１同士およびリッツ線編組線１０と絶縁薄板２０とが融着しているため、良好なコイル形状保持性が得られる。 According to the spiral coil 101 of the first embodiment, the following effects can be obtained.
(1) Since the litz wire braided wire 10 is used, eddy current loss can be reduced.
(2) Since a circular litz wire braided wire that is available at a relatively low cost is used by being deformed into a flat shape, the cost can be reduced.
(3) The length of the long side of the flat tubular litz wire braided wire 10 can be adjusted by increasing or decreasing the number of self-bonding insulated wires 1 of the litz wire 2 to adjust the outer diameter of the litz wire as a basic unit wire of the braid. w / Length t of the short side can be adjusted. Further, the thickness of the insulating thin plate 20 sandwiched between the turns can be adjusted. As a result, both the requirements of the coil outer diameter and the number of turns of the spiral coil 101 can be easily satisfied.
(4) Since the self-bonding insulated wires 1 of the litz wires 2 and the litz wire braided wire 10 and the insulating thin plate 20 are fused, good coil shape retention is obtained.

（５）編組線断面の長辺同士が対面するようにリッツ線編組線１０を渦巻き状に巻くため、短辺同士が対面するように巻く場合に比べて、コイル外径に対する最大巻数を増やすことが出来る。 (5) Since the Litz wire braided wire 10 is spirally wound so that the long sides of the braided wire cross section face each other, the maximum number of turns with respect to the outer diameter of the coil is increased as compared with the case where the short sides face each other. I can do it.

（６）リッツ線編組線１０と当接する絶縁薄板２０の面に熱融着材が付着されているため、リッツ線編組線１０と絶縁薄板２０の融着を確実にすることが出来る。 (6) Since the heat sealing material is attached to the surface of the insulating thin plate 20 that comes into contact with the litz wire braided wire 10, the fusion of the litz wire braided wire 10 and the insulating thin plate 20 can be ensured.

（７）絶縁薄板２０は、軟磁性特性を有するため、磁気抵抗を減らすことが出来る。また、インダクタンスが増加することによってＱが増加し、損失改善になる。 (7) Since the insulating thin plate 20 has soft magnetic properties, it can reduce the magnetic resistance. Further, Q increases as the inductance increases, and loss is improved.

（８）絶縁薄板２０は、混在する無機フィラーにより熱伝導度が大きくなっているため、コイル全面での温度均一性および放熱性が改善される。 (8) Since the insulating thin plate 20 has a high thermal conductivity due to the mixed inorganic filler, temperature uniformity and heat dissipation over the entire coil surface are improved.

図５は、実施例２に係る渦巻きコイル１０２を示す上面図である。図６は、図５のＡ−Ａ’断面図である。
この渦巻きコイル１０２は、リッツ線２を編組の基本単位電線とする扁平管状のリッツ線編組線１０を、各ターン間に絶縁薄板２０を挟んで、編組線断面の長辺同士が対面するように且つ長辺を巻き軸に対し傾斜させて渦巻き状に巻き、自己融着絶縁電線１同士およびリッツ線編組線１０と絶縁薄板２０とを熱融着させたものである。 FIG. 5 is a top view illustrating the spiral coil 102 according to the second embodiment. 6 is a cross-sectional view taken along the line AA ′ of FIG.
The spiral coil 102 has a flat tubular litz wire braided wire 10 having a litz wire 2 as a basic unit wire of the braid, with an insulating thin plate 20 interposed between the turns so that the long sides of the braided wire cross section face each other. In addition, the long side is inclined with respect to the winding axis and wound in a spiral shape, and the self-bonding insulated wires 1 and the litz wire braided wire 10 and the insulating thin plate 20 are heat-sealed.

図６に示すように、高周波電源Ｇから渦巻きコイル１０２に給電し、渦巻きコイル１０２の上面直上に置かれた鍋などを誘導加熱する。   As shown in FIG. 6, power is supplied to the spiral coil 102 from the high-frequency power source G, and a pan placed on the upper surface of the spiral coil 102 is induction-heated.

実施例２の渦巻きコイル１０２によれば実施例１の渦巻きコイル１０１と同様の効果が得られる。但し、リッツ線編組線１０の長辺が巻き軸に対し傾斜して渦巻き状に巻くため、実施例１の渦巻きコイル１０１に比べてコイル外径に対する最大巻数を減らすことが出来る。また、短辺同士が対面するように巻く場合に比べてコイル外径に対する最大巻数を増やすことが出来る。   According to the spiral coil 102 of the second embodiment, the same effect as that of the spiral coil 101 of the first embodiment can be obtained. However, since the long side of the litz wire braided wire 10 is inclined and spirally wound with respect to the winding axis, the maximum number of turns with respect to the coil outer diameter can be reduced as compared with the spiral coil 101 of the first embodiment. In addition, the maximum number of turns with respect to the outer diameter of the coil can be increased as compared with the case of winding so that the short sides face each other.

図７は、実施例３に係る渦巻きコイル１０３を示す上面図である。図８は、図７のＡ−Ａ’断面図である。
この渦巻きコイル１０３は、リッツ線２を編組の基本単位電線とする扁平管状のリッツ線編組線１０を、各ターン間に絶縁薄板３０を挟んで、編組線断面の短辺同士が対面するように渦巻き状に巻き、自己融着絶縁電線１同士およびリッツ線編組線１０と絶縁薄板３０とを熱融着させたものである。 FIG. 7 is a top view illustrating the spiral coil 103 according to the third embodiment. 8 is a cross-sectional view taken along line AA ′ of FIG.
The spiral coil 103 has a flat tubular Litz wire braided wire 10 having the Litz wire 2 as a basic unit wire of the braid so that the short sides of the braided wire cross section face each other with the insulating thin plate 30 sandwiched between the turns. The self-bonding insulated wires 1 and the litz wire braided wire 10 and the insulating thin plate 30 are heat-sealed in a spiral shape.

図８に示すように、高周波電源Ｇから渦巻きコイル１０３に給電し、渦巻きコイル１０３の上面直上に置かれた鍋などを誘導加熱する。   As shown in FIG. 8, power is supplied from the high-frequency power source G to the spiral coil 103, and a pan or the like placed immediately above the upper surface of the spiral coil 103 is induction-heated.

実施例３の渦巻きコイル１０３によれば実施例１の渦巻きコイル１０１と同様の効果が得られる。但し、リッツ線編組線１０の短辺同士が対面するように渦巻き状に巻くため、実施例１の渦巻きコイル１０１や実施例２の渦巻きコイル１０２に比べてコイル外径に対する最大巻数を減らすことが出来る。   According to the spiral coil 103 of the third embodiment, the same effect as that of the spiral coil 101 of the first embodiment can be obtained. However, since the short sides of the Litz wire braided wire 10 are wound so as to face each other, the maximum number of turns with respect to the coil outer diameter can be reduced as compared with the spiral coil 101 of the first embodiment and the spiral coil 102 of the second embodiment. I can do it.

本発明の渦巻きコイルは、高周波回路において好適に使用できる。具体例としては、電力伝送電気回路や電源回路における空芯または有磁心のコイルやトランス、インダクター，ＩＨヒーターコイルやモーターなどに利用することが出来る。   The spiral coil of the present invention can be suitably used in a high frequency circuit. As a specific example, it can be used for an air core or magnetic core coil or transformer, an inductor, an IH heater coil, a motor or the like in a power transmission electric circuit or a power supply circuit.

実施例１に係る渦巻きコイルを示す上面図である。1 is a top view showing a spiral coil according to Embodiment 1. FIG. 図１のＡ−Ａ’断面図である。It is A-A 'sectional drawing of FIG. 扁平管状のリッツ線編組線を示す断面図である。It is sectional drawing which shows a flat tubular litz wire braided wire. リッツ線を示す斜視図である。It is a perspective view which shows a litz wire. 実施例２に係る渦巻きコイルを示す上面図である。6 is a top view showing a spiral coil according to Embodiment 2. FIG. 図５のＡ−Ａ’断面図である。It is A-A 'sectional drawing of FIG. 実施例３に係る渦巻きコイルを示す上面図である。6 is a top view showing a spiral coil according to Embodiment 3. FIG. 図７のＡ−Ａ’断面図である。It is A-A 'sectional drawing of FIG.

符号の説明Explanation of symbols

１ 自己融着絶縁電線
２ リッツ線
１０ リッツ線編組線
２０ 絶縁薄板
１０１，１０２，１０３ 渦巻きコイル DESCRIPTION OF SYMBOLS 1 Self-fusing insulated wire 2 Litz wire 10 Litz wire braided wire 20 Insulating thin plate 101,102,103 Spiral coil

Claims (7)

自己融着絶縁電線の素線を撚って構成されているリッツ線を編組の基本単位電線とする扁平管状のリッツ線編組線が、各ターン間に絶縁材を挟んで、渦巻き状に巻かれ、且つ、前記素線同士および前記リッツ線編組線と前記絶縁材とが融着していることを特徴とする渦巻きコイル。 A flat tubular Litz wire braided wire with a basic unit wire braided by twisting strands of self-bonding insulated wire is wound in a spiral shape with an insulating material between each turn. The spiral coil is characterized in that the strands, the litz wire braided wire, and the insulating material are fused. 請求項１に記載の渦巻きコイルにおいて、編組線断面の長辺同士が対面するように前記扁平管状のリッツ線編組線が渦巻き状に巻かれていることを特徴とする渦巻きコイル。 The spiral coil according to claim 1, wherein the flat tubular litz wire braided wire is wound in a spiral shape so that the long sides of the braided wire cross section face each other. 請求項２に記載の渦巻きコイルにおいて、前記長辺が巻き軸に対し傾斜して巻かれていることを特徴とする渦巻きコイル。 3. The spiral coil according to claim 2, wherein the long side is wound with an inclination with respect to a winding axis. 請求項１に記載の渦巻きコイルにおいて、編組線断面の短辺同士が対面するように前記扁平管状のリッツ線編組線が渦巻き状に巻かれていることを特徴とする渦巻きコイル。 The spiral coil according to claim 1, wherein the flat tubular litz wire braided wire is wound in a spiral shape so that the short sides of the braided wire cross section face each other. 請求項１から請求項４のいずれかに記載の渦巻きコイルにおいて、前記絶縁材の少なくとも一対の対向面に熱融着材が付着されていることを特徴とする渦巻きコイル。 The spiral coil according to any one of claims 1 to 4, wherein a heat-sealing material is attached to at least a pair of opposing surfaces of the insulating material. 請求項１から請求項５のいずれかに記載の渦巻きコイルにおいて、前記絶縁材は、軟磁性特性を有する材料製であることを特徴とする渦巻きコイル。 The spiral coil according to any one of claims 1 to 5, wherein the insulating material is made of a material having soft magnetic properties. 請求項１から請求項５のいずれかに記載の渦巻きコイルにおいて、前記絶縁材は、プラスティック材に無機フィラーを混在させた材料製であることを特徴とする渦巻きコイル。 6. The spiral coil according to claim 1, wherein the insulating material is made of a material in which an inorganic filler is mixed in a plastic material.
JP2008178948A 2008-07-09 2008-07-09 Spiral coil Expired - Fee Related JP5121606B2 (en)

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WO2023033125A1 (en) * 2021-09-03 2023-03-09 日本碍子株式会社 Induction heating coil unit and induction heating device
WO2023042363A1 (en) * 2021-09-17 2023-03-23 日本たばこ産業株式会社 Aerosol generating system and method for manufacturing aerosol generating system

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