JPH0722170A - Induction heating cooking apparatus - Google Patents
Induction heating cooking apparatusInfo
- Publication number
- JPH0722170A JPH0722170A JP16053293A JP16053293A JPH0722170A JP H0722170 A JPH0722170 A JP H0722170A JP 16053293 A JP16053293 A JP 16053293A JP 16053293 A JP16053293 A JP 16053293A JP H0722170 A JPH0722170 A JP H0722170A
- Authority
- JP
- Japan
- Prior art keywords
- heating coil
- magnetic field
- mounting portion
- magnetic shield
- magnetic
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、加熱コイルから発生さ
れて周囲に漏洩する磁界を低減する磁気シールド手段を
備えた誘導加熱調理器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker provided with magnetic shield means for reducing a magnetic field leaked to the surroundings from a heating coil.
【０００２】[0002]
【従来の技術】近年、高周波磁界により負荷鍋底に渦電
流を誘起して加熱する誘導加熱調理器は高出力化が図ら
れ、それにともない周囲に漏洩する磁界を抑制すること
が必要となってきている。2. Description of the Related Art In recent years, induction heating cookers that induce eddy currents in the bottom of a load pan by a high-frequency magnetic field for heating have been designed to have a high output, and it has become necessary to suppress the magnetic field leaking to the surroundings. There is.
【０００３】従来、この種の誘導加熱調理器の加熱コイ
ルから周囲に漏洩する磁界を抑制する磁気シールド手段
には特開昭５７−１１５７９５号公報に示すような構成
が知られていた。Conventionally, as a magnetic shield means for suppressing a magnetic field leaking from the heating coil of an induction heating cooker of this kind to the surroundings, a structure as disclosed in Japanese Patent Laid-Open No. 57-115795 has been known.
【０００４】以下、その構成について図５を参照しなが
ら説明する。図に示すように、円盤状の加熱コイル１を
加熱コイル保持台２の上に載置し、コイルホルダー３で
加熱コイル１の周囲を抑えて固定し、さらにアルミなど
の導電材料で形成された断面が逆Ｌ字形のリング４を加
熱コイル１の周囲に設けている。そして、加熱コイル保
持台２は筐体５の底面に設けられた支柱７に固定され、
負荷鍋を載置するトッププレート８の下方に加熱コイル
１が位置している。リング４は、アルミ板をドーナツ状
に打ち抜いた後、金型により断面が逆Ｌ字形になるよう
に成形して製造している。The structure will be described below with reference to FIG. As shown in the figure, a disk-shaped heating coil 1 is placed on a heating coil holder 2 and the coil holder 3 fixes the heating coil 1 so that the surroundings of the heating coil 1 are not fixed and is made of a conductive material such as aluminum. A ring 4 having an inverted L-shaped cross section is provided around the heating coil 1. Then, the heating coil holder 2 is fixed to a column 7 provided on the bottom surface of the housing 5,
The heating coil 1 is located below the top plate 8 on which the load pan is placed. The ring 4 is manufactured by stamping out an aluminum plate in a donut shape and then molding it into a reverse L-shape by a mold.
【０００５】上記構成において、加熱コイル１に高周波
電流を供給するとリング４に加熱コイル１の発生する磁
界により高周波電流が誘導される。このリング４に誘導
された高周波電流による磁界はリング４内方においては
加熱コイル１による磁界を強め、リング４外方において
は加熱コイル１による磁界と逆向きの磁界になり、加熱
コイル１から外方に漏洩する磁界を低減する。In the above structure, when a high frequency current is supplied to the heating coil 1, the high frequency current is induced in the ring 4 by the magnetic field generated by the heating coil 1. The magnetic field generated by the high-frequency current induced in the ring 4 strengthens the magnetic field generated by the heating coil 1 inside the ring 4, and becomes the magnetic field in the opposite direction to the magnetic field generated by the heating coil 1 outside the ring 4. The magnetic field leaking toward one side is reduced.
【０００６】[0006]
【発明が解決しようとする課題】このような従来の誘導
加熱調理器では、リング４を製造するのにアルミ板をド
ーナツ状に打ち抜くのでその中央部分を捨てなければな
らず、また材料となる原板は通常四角形であるので円形
に打ち抜かれた四隅部分を捨てなければならず、材料の
利用効率が悪くなって、材料代が高くなるとともに、金
型で成形するため加工費も高くなり、リング４のコスト
が極めて高くなるという問題があった。In such a conventional induction heating cooker, an aluminum plate is punched out in a donut shape in order to manufacture the ring 4, so that the central portion of the plate must be discarded, and the original plate as a material. Since it is usually a quadrangle, it is necessary to discard the four corners punched out in a circular shape, which reduces the efficiency of use of the material, raises the cost of the material, and increases the processing cost because it is molded with a die, so the ring 4 There was a problem that the cost of was extremely high.
【０００７】本発明は上記問題を解決するもので、加熱
コイルから発生されて周囲に漏洩する磁界を低減するこ
とができ、しかも低コストの誘導加熱調理器を提供する
ことを第１の目的としている。The present invention is intended to solve the above problems, and it is a first object of the present invention to provide a low-cost induction heating cooker capable of reducing a magnetic field generated from a heating coil and leaking to the surroundings. There is.
【０００８】また、磁気シールド用導電部材の振動によ
る騒音の発生を防止することができる誘導加熱調理器を
提供することを第２の目的としている。A second object of the present invention is to provide an induction heating cooker capable of preventing the generation of noise due to the vibration of the magnetic shield conductive member.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明の第１の手段は、磁気シールド用導電部材を絶
縁部材で被覆された導電線を両端部で接続して閉ループ
状に形成し、その複数個を前記加熱コイル保持台の外側
面に形設された装着部に積層装着した構成としたもので
ある。In order to achieve the above object, the first means of the present invention is to form a magnetic shield conductive member in a closed loop shape by connecting conductive wires covered with an insulating member at both ends. Then, a plurality of them are stacked and mounted on a mounting portion formed on the outer surface of the heating coil holder.
【００１０】また、第２の手段は、磁気シールド用導電
部材を導電線で形成して前記加熱コイル保持台の周縁部
に形設された溝に装着するとともに、その両端部を接続
して閉ループ状に形成した構成としたものである。The second means is to form a magnetic shield conductive member with a conductive wire and mount it in a groove formed in the peripheral portion of the heating coil holder, and connect both ends thereof to form a closed loop. It is configured to have a shape.
【００１１】また、第３の手段は、磁気シールド用導電
部材を帯状の導電板の両端部を接続して閉ループ状に形
成し、前記加熱コイル保持台の外側面に形設された装着
部に装着するとともに、前記磁気シールド用導電部材と
前記装着部の間に接着剤もしくは弾力性を有する合成樹
脂を介装した構成としたものである。A third means is to form a magnetic shield conductive member in a closed loop shape by connecting both ends of a belt-shaped conductive plate, and to a mounting portion formed on the outer surface of the heating coil holder. While being mounted, an adhesive or a synthetic resin having elasticity is interposed between the magnetic shield conductive member and the mounting portion.
【００１２】また、第４の手段は、磁気シールド用導電
部材を両端を接続した複数ターンの閉ループのソレノイ
ドで形成し、前記加熱コイル保持台の外側面に形成され
たソレノイド装着部に装着するとともに、前記ソレノイ
ドと前記装着部の間に弾力性を有する合成樹脂もしくは
接着剤を介装した構成としたものである。A fourth means is to form the magnetic shield conductive member by a solenoid of a closed loop having a plurality of turns having both ends connected, and to mount it on a solenoid mounting portion formed on an outer surface of the heating coil holder. A synthetic resin or adhesive having elasticity is interposed between the solenoid and the mounting portion.
【００１３】[0013]
【作用】上記第１の手段の構成において、磁気シールド
用導電部材を導電線を閉ループ状に形成して加熱コイル
保持台の外側面に配設したことにより、加熱コイルの発
生する高周波磁界が磁気シールド用導電部材を鎖交して
導電線に高周波電流を誘導する。この導電電流により磁
界が発生して加熱コイルから周囲に漏洩する磁界を抑制
する。さらに、磁気シールド用導電部材を複数個積層し
て加熱コイル保持部材の外側面に設けた電線装着部に装
着したことにより、加熱コイルの磁界を打ち消す反磁束
が増加するとともに、反磁束を発生する電流原の分布が
幾何学的に広がるので磁気遮蔽効果が向上する。In the structure of the first means, the conductive member for magnetic shield is formed on the outer surface of the heating coil holder by forming the conductive wire in a closed loop shape, so that the high frequency magnetic field generated by the heating coil is magnetic. A high-frequency current is induced in the conductive wire by interlinking the shield conductive members. A magnetic field is generated by this conductive current and suppresses a magnetic field leaking from the heating coil to the surroundings. Furthermore, by stacking a plurality of magnetic shield conductive members and mounting them on the wire mounting portion provided on the outer surface of the heating coil holding member, the demagnetizing flux that cancels the magnetic field of the heating coil is increased and the demagnetizing flux is generated. Since the distribution of the current source is geometrically widened, the magnetic shielding effect is improved.
【００１４】上記第２の手段の構成において、導電線を
加熱コイル保持台の周縁部に設けられた溝に装着して複
数回巻装された閉ループ状の磁気シールド用導電部材を
形成したことにより、第１の手段と同様にして誘導電流
により発生する加熱コイルの磁界を打ち消す反磁束が増
加するとともに、反磁束を発生する電流源の分布が幾何
学的に広がるので磁気遮蔽効果が向上する。In the structure of the second means, the conductive wire is mounted in the groove provided in the peripheral portion of the heating coil holder to form the closed loop magnetic shield conductive member wound a plurality of times. Similarly to the first means, the anti-magnetic flux that cancels the magnetic field of the heating coil generated by the induced current increases, and the distribution of the current sources that generate the anti-magnetic flux is geometrically widened, so that the magnetic shielding effect is improved.
【００１５】上記第３の手段の構成において、磁気シー
ルド用導電部材を帯状の導電板を閉ループ状に形成して
加熱コイル保持台の外側面に装着するとともに接着剤も
しくは弾力性を有する合成樹脂を介装したことにより、
加熱コイルの電流と磁気シールド用導電部材に誘起され
る電流の相互作用により生じる磁気シールド用導電部材
の振動を緩衝し、加熱コイル保持台との接触をなくす
る。In the structure of the third means, the magnetic shield conductive member is formed on the outer surface of the heating coil holder by forming a belt-shaped conductive plate in a closed loop shape, and an adhesive or a synthetic resin having elasticity is used. By interposing,
The vibration of the magnetic shield conductive member caused by the interaction between the current of the heating coil and the current induced in the magnetic shield conductive member is buffered to eliminate the contact with the heating coil holder.
【００１６】上記第４の手段の構成において、磁気シー
ルド用導電部材を閉ループ状のソレノイドで形成して加
熱コイル保持台の外側面に装着するとともに接着剤もし
くは弾力性を有する合成樹脂を介装したことにより、第
１の手段と同様にして誘導電流により発生する加熱コイ
ルの磁界を打ち消す反磁束が増加するとともに、反磁束
を発生する電流源の分布が幾何学的に広がるので磁気遮
蔽効果が向上する。また、第３の手段と同様に、加熱コ
イルの電流と磁気シールド用導電部材に誘起される電流
の相互作用により生じる磁気シールド用導電部材の振動
を緩衝し、加熱コイル保持台との接触をなくする。In the structure of the above-mentioned fourth means, the magnetic shield conductive member is formed of a closed loop solenoid and mounted on the outer surface of the heating coil holder, and an adhesive or a synthetic resin having elasticity is interposed. As a result, as in the case of the first means, the anti-magnetic flux that cancels the magnetic field of the heating coil generated by the induced current increases, and the distribution of the current sources that generate the anti-magnetic flux geometrically widens, so the magnetic shielding effect is improved. To do. Further, similarly to the third means, the vibration of the magnetic shield conductive member caused by the interaction between the current of the heating coil and the current induced in the magnetic shield conductive member is buffered so that the contact with the heating coil holder is eliminated. To do.
【００１７】[0017]
【実施例】以下本発明の一実施例について、図１から図
５を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１８】（実施例１）本発明の第１の実施例につい
て図１により説明する。(Embodiment 1) A first embodiment of the present invention will be described with reference to FIG.
【００１９】図１（ａ）、（ｂ）に示すように、樹脂製
の筐体１１の底面に設けられた支柱１２の上には加熱コ
イル保持台１３が載置され、ネジ１４により固定されて
いる。加熱コイル保持台１３は加熱コイル１５が載置さ
れ、その上部にセラミック製のトッププレート１６が配
設されている。加熱コイル１５はコイルホルダー１７に
よりその周辺部が加熱コイル保持台１３に押えつけられ
て固定され、筐体１１内に配設されたインバータなどの
周波数変換装置１８から高周波電流が供給される。As shown in FIGS. 1 (a) and 1 (b), a heating coil holding base 13 is placed on a column 12 provided on the bottom surface of a resin case 11 and fixed by screws 14. ing. A heating coil 15 is placed on the heating coil holder 13, and a ceramic top plate 16 is disposed on the heating coil 15. A peripheral portion of the heating coil 15 is pressed and fixed to a heating coil holding base 13 by a coil holder 17, and a high frequency current is supplied from a frequency conversion device 18 such as an inverter arranged in the housing 11.
【００２０】加熱コイル保持台１３の外側面には縦溝状
の電線装着部１９が形設され、電線装着部１９には複数
の磁気シールド用導電部材（以下、シールド部材とい
う）２０ａ、２０ｂ、２０ｃ、２０ｄが上下方向に積層
装着されている。また、電線装着部１９の開口部はその
間隙が局部的に狭く形成されている。A vertical groove-shaped electric wire mounting portion 19 is formed on the outer surface of the heating coil holder 13, and the electric wire mounting portion 19 has a plurality of magnetic shield conductive members (hereinafter referred to as shield members) 20a, 20b. 20c and 20d are vertically stacked and mounted. Further, the opening of the electric wire mounting portion 19 is locally formed with a narrow gap.
【００２１】シールド部材２０ａ、…２０ｄは、導電線
の周囲にシリコン樹脂あるいは耐熱塩化ビニールなどの
柔軟性を有し電気絶縁性のある合成樹脂で被覆されてい
る。そして、図１（ｂ）に示したように、被覆電線の両
端の被覆が剥離されてコネクタ２１により圧接接続され
てループ状に形成されている。このコネクタ２１は電線
装着部１９の外壁上部に設けられた切り欠き部２２に挿
入されるようになっている。The shield members 20a, ..., 20d are covered with a synthetic resin having flexibility and electrical insulation such as silicone resin or heat-resistant vinyl chloride around the conductive wire. Then, as shown in FIG. 1B, the coatings on both ends of the coated electric wire are peeled off and pressure-connected by the connector 21 to form a loop shape. The connector 21 is adapted to be inserted into a cutout portion 22 provided on the outer wall of the electric wire mounting portion 19.
【００２２】上記構成において、加熱コイル１５に周波
数変換装置１８から高周波電流が供給されると加熱コイ
ル１５から磁界が発生する。この磁界はトッププレート
１６上に載置されたたとえば鉄製の鍋に鎖交して鍋に渦
電流を発生させ、これにより鍋がジュール熱により発熱
する。In the above structure, when a high frequency current is supplied to the heating coil 15 from the frequency converter 18, a magnetic field is generated from the heating coil 15. This magnetic field interlinks with, for example, an iron pot placed on the top plate 16 to generate an eddy current in the pot, which causes the pot to generate heat due to Joule heat.
【００２３】一方、加熱コイル１５から発生する磁界は
シールド部材２０ａ、…２０ｄで形成される閉曲面にも
鎖交してシールド部材２０ａ、…２０ｄに誘導電流を発
生させる。この誘導電流はシールド部材２０ａ、…２０
ｄの内方においては加熱コイル１５の磁界と同方向の、
また、外方においては反対方向の磁界を発生するので、
加熱コイル１５から発生されて周囲に漏洩する磁界を抑
制することができる。On the other hand, the magnetic field generated from the heating coil 15 also interlinks with the closed curved surface formed by the shield members 20a, ..., 20d to generate an induced current in the shield members 20a ,. This induced current is applied to the shield members 20a, ... 20
Inside d, in the same direction as the magnetic field of the heating coil 15,
In addition, since a magnetic field in the opposite direction is generated outside,
A magnetic field generated from the heating coil 15 and leaking to the surroundings can be suppressed.
【００２４】この場合、複数のシールド部材２０ａ、…
２０ｄは上下方向に積層されているので、加熱コイル１
５の磁界を抑制する電流が円筒状のシールド部材に流れ
るのとほぼ等価となり、効果的に加熱コイル１５から周
囲に漏洩する磁界を低減することができるという効果が
得られる。In this case, the plurality of shield members 20a, ...
Since 20d is vertically stacked, the heating coil 1
The current for suppressing the magnetic field of No. 5 becomes almost equivalent to flowing through the cylindrical shield member, and the effect of effectively reducing the magnetic field leaking from the heating coil 15 to the surroundings can be obtained.
【００２５】また、シールド部材２０ａ、…２０ｄは被
覆電線の両端をコネクタ２１で圧接接続して形成される
ので製造が容易なものとなるとともに、アルミ板を打ち
抜いて成形する従来の構成のものに比べ、材料の利用効
率を高くすることができるという効果が得られる。Further, since the shield members 20a, ... 20d are formed by press-connecting both ends of the covered electric wire with the connector 21, the manufacture is easy, and the shield member 20a, ... In comparison, the effect that the material utilization efficiency can be increased is obtained.
【００２６】さらに、シールド部材２０ａ、…２０ｄに
は導電線の周囲に柔軟性を有する合成樹脂を被覆してい
るで、導電線に流れる電流と加熱コイル１５に流れる電
流とが相互作用を及ぼしあって導電線が振動したとして
も、加熱コイル保持台１３に触れることによって生じる
耳障りな騒音を発生することがなく、また、電線装着部
１９の開口部は局部的に間隙が狭くなっているのでシー
ルド部材２０ａ、…２０ｄが電線装着部１９から離脱す
ることがないという効果が得られる。Further, since the shield members 20a, ..., 20d are coated with a flexible synthetic resin around the conductive wires, the current flowing through the conductive wires and the current flowing through the heating coil 15 interact with each other. Even if the conductive wire vibrates, no annoying noise generated by touching the heating coil holding base 13 is generated, and the opening of the wire mounting portion 19 has a locally narrowed gap, so that the shield is provided. An effect that the members 20a, ..., 20d are not separated from the electric wire mounting portion 19 is obtained.
【００２７】なお、電線装着部１９の外壁１９ａは、図
５に示した装着部のように部分的に形成してもよいもの
である。また、シールド部材２０ａ、…２０ｄと電線装
着部１９の間に弾力性を有する合成樹脂もしくは接着剤
を介装してシールド部材２０ａ、…２０ｄの振動を防止
するようにしてもよいものである。The outer wall 19a of the wire mounting portion 19 may be partially formed like the mounting portion shown in FIG. 20d may be interposed between the shield members 20a, ..., 20d and the electric wire mounting portion 19 to prevent vibration of the shield members 20a ,.
【００２８】このように本発明の第１の実施例によれ
ば、加熱コイル保持台１３の外側面に形設した電線装着
部１９に絶縁部材で被覆された閉ループ状の複数のシー
ルド部材２０ａ、…２０ｄを積層装着したことにより、
加熱コイル１５から周囲に漏洩する磁界を効果的に、ま
た、安価な費用で低減することができる。As described above, according to the first embodiment of the present invention, the electric wire mounting portion 19 formed on the outer surface of the heating coil holder 13 has a plurality of closed loop shield members 20a covered with an insulating member. … By stacking 20d,
The magnetic field leaking from the heating coil 15 to the surroundings can be reduced effectively and at low cost.
【００２９】（実施例２）次に、本発明の第２の実施例
について図２により説明する。(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIG.
【００３０】なお、第１の実施例に示したものと異なる
構成についてのみ説明する。図に示すように、加熱コイ
ル１５が装着された加熱コイル保持台１３の周縁部の上
面と側面には溝２３が形設されている。この溝２３は螺
旋状あるいは相互に連通する環状に形成され、溝２３内
には１本の導電線２４が装着されている。そして、導電
線２４の始端と終端は適宜な手段で接続されて複数ター
ンの閉ループコイルに形成されている。Only the structure different from that shown in the first embodiment will be described. As shown in the drawing, a groove 23 is formed on the upper surface and the side surface of the peripheral portion of the heating coil holder 13 on which the heating coil 15 is mounted. The groove 23 is formed in a spiral shape or in an annular shape that communicates with each other, and one conductive wire 24 is mounted in the groove 23. The starting end and the terminating end of the conductive wire 24 are connected by an appropriate means to form a closed loop coil having a plurality of turns.
【００３１】上記構成において、加熱コイル保持台１３
の上面と側面に巻回された導電線２４はその両端が接続
されているので、加熱コイル１５からの磁束により導電
線２４に誘導電流が流れ、第１の実施例に示したものと
同様に誘導電流は加熱コイル１５から周囲に漏洩する磁
界を低減する。また、導電線２４は加熱コイル保持台１
３の上面から側面にわたって幅広く配置されているので
漏洩磁界を低減する効果が大きくなる。また、加熱コイ
ル保持台１３に溝２３を設けて溝内に導電線２４が装着
されているので導電線２４に絶縁体を被覆する必要がな
く、両端を接続する際の絶縁体の剥離作業が不要とな
る。In the above structure, the heating coil holder 13
Since both ends of the conductive wire 24 wound around the upper surface and the side surface of the conductive wire 24 are connected to each other, an induced current flows through the conductive wire 24 due to the magnetic flux from the heating coil 15, and similar to the one shown in the first embodiment. The induced current reduces the magnetic field leaking from the heating coil 15 to the surroundings. Further, the conductive wire 24 is the heating coil holder 1.
Since it is widely arranged from the upper surface to the side surface of 3, the effect of reducing the leakage magnetic field becomes large. Further, since the heating coil holding base 13 is provided with the groove 23 and the conductive wire 24 is mounted in the groove, it is not necessary to cover the conductive wire 24 with an insulator, and the work of peeling the insulator when connecting both ends can be performed. It becomes unnecessary.
【００３２】なお、導電線２４の溝２３への装着におい
て、両者間に弾力性を有する合成樹脂もしくは接着剤を
介装して導電線２４の振動を防止するようにしてもよい
ものである。また、溝２３を加熱コイル保持台１３の上
面と側面のいずれか一方にのみ形設して導電線２４を装
着してもよいものである。When the conductive wire 24 is mounted in the groove 23, a resilient synthetic resin or adhesive may be interposed between the two to prevent the conductive wire 24 from vibrating. Further, the groove 23 may be formed only on one of the upper surface and the side surface of the heating coil holding base 13 and the conductive wire 24 may be attached thereto.
【００３３】このように本発明の第２の実施例によれ
ば、加熱コイル保持台１３の周縁部に設けた溝２３に導
電線２４を装着して複数ターンの閉ループコイルを形成
したことにより、加熱コイル１５から周囲に漏洩する磁
界を効果的に低減することができるとともに、導電線２
４に絶縁被覆を施す必要がないので導電線２４のコスト
を低減することができる。さらに、導電線２４の両端部
の接続時の絶縁被覆剥離の手間を省くことができるとい
う効果がある。As described above, according to the second embodiment of the present invention, the conductive wire 24 is attached to the groove 23 provided in the peripheral portion of the heating coil holder 13 to form a closed loop coil having a plurality of turns. The magnetic field leaking from the heating coil 15 to the surroundings can be effectively reduced, and the conductive wire 2
Since it is not necessary to apply an insulating coating to the wiring 4, the cost of the conductive wire 24 can be reduced. Further, there is an effect that it is possible to save the labor of peeling the insulating coating when connecting both ends of the conductive wire 24.
【００３４】（実施例３）次に、本発明の第３の実施例
について図３により説明する。(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIG.
【００３５】なお、第１の実施例に示したものと異なる
構成についてのみ説明する。図に示すように、加熱コイ
ル１５が装着された加熱コイル保持台１３の外側面には
縦溝状の装着部２５が形設され、装着部２５にはリング
状のシールド部材２６が装着されている。また、装着部
２５の開口部にはシールド部材２６を挟持する局部的な
狭隘部２７が複数個所設けられている。Only the structure different from that shown in the first embodiment will be described. As shown in the figure, a vertical groove-shaped mounting portion 25 is formed on the outer surface of the heating coil holding base 13 to which the heating coil 15 is mounted, and a ring-shaped shield member 26 is mounted on the mounting portion 25. There is. Further, a plurality of local narrow portions 27 for sandwiching the shield member 26 are provided at the opening of the mounting portion 25.
【００３６】シールド部材２６は帯状の導電板をリング
状に巻回し、両端部２８を適宜な手段で接続して閉ルー
プ状に形成されている。また、シールド部材２６と装着
部２５の間には、その全面あるいは数個所に弾力性を有
する合成樹脂もしくは接着剤、たとえば、シリコンゴム
系の充填材あるいは接着剤が介装されている。The shield member 26 is formed in a closed loop shape by winding a band-shaped conductive plate in a ring shape and connecting both ends 28 by appropriate means. Further, between the shield member 26 and the mounting portion 25, a synthetic resin or an adhesive having elasticity, for example, a silicone rubber-based filler or an adhesive is provided on the entire surface or at several places.
【００３７】上記構成において、シールド部材２６はそ
の両端部２８が接続されているので、加熱コイル１５か
らの磁束によりシールド部材２６に誘導電流が流れ、第
１の実施例に示したものと同様に誘導電流は加熱コイル
１５から周囲に漏洩する磁界を低減する。また、シール
ド部材２６は帯状の導電板の両端を接続してリング状に
形成されるので、シールド部材２６の製作において廃棄
する材料が極減し、材料コストを低減することができ
る。また、シールド部材２６を狭隘部２７で挟持し、シ
ールド部材２６と装着部２５の間の全面または数個所に
弾力性を有する合成樹脂もしくは接着剤を介装してシー
ルド部材２６のガタツキをなくしたので、シールド部材
２６に誘起される電流と加熱コイル１５に流れる電流と
の相互作用によるシールド部材２６の振動が抑制され、
シールド部材２６の加熱コイル保持台１３との接触によ
る騒音の発生を防止することができる。In the above structure, since both ends 28 of the shield member 26 are connected, an induced current flows in the shield member 26 due to the magnetic flux from the heating coil 15, and the shield member 26 has the same structure as that shown in the first embodiment. The induced current reduces the magnetic field leaking from the heating coil 15 to the surroundings. Further, since the shield member 26 is formed in a ring shape by connecting both ends of the strip-shaped conductive plate, the material to be discarded in the production of the shield member 26 is extremely reduced, and the material cost can be reduced. Further, the shield member 26 is sandwiched by the narrow portions 27, and synthetic resin or adhesive having elasticity is interposed on the entire surface or at several places between the shield member 26 and the mounting portion 25 to eliminate rattling of the shield member 26. Therefore, the vibration of the shield member 26 due to the interaction between the current induced in the shield member 26 and the current flowing in the heating coil 15 is suppressed,
It is possible to prevent generation of noise due to contact of the shield member 26 with the heating coil holding base 13.
【００３８】なお、装着部２５は、図５に示した装着部
のように部分的に形成してもよいものである。The mounting portion 25 may be partially formed like the mounting portion shown in FIG.
【００３９】このように本発明の第３の実施例によれ
ば、加熱コイル保持台１３の外側面に形設した装着部２
５に帯状の導電板をリング状に成形した閉ループのシー
ルド部材２６を装着し、シールド部材２６と装着部の間
に弾力性を有する合成樹脂もしくは接着剤を介装させた
ことにより、加熱コイル１５から周囲に漏洩する磁界を
効果的に低減することができるとともに、シールド部材
２６の材料コストを低減することができる。さらにシー
ルド部材２６の振動による騒音の発生を防止することが
できるという効果がある。As described above, according to the third embodiment of the present invention, the mounting portion 2 formed on the outer side surface of the heating coil holding base 13 is formed.
A closed loop shield member 26 formed by molding a belt-shaped conductive plate into a ring shape is attached to the member 5, and a synthetic resin or an adhesive having elasticity is interposed between the shield member 26 and the attaching portion. It is possible to effectively reduce the magnetic field leaking from the surroundings to the surroundings and reduce the material cost of the shield member 26. Further, there is an effect that it is possible to prevent the generation of noise due to the vibration of the shield member 26.
【００４０】（実施例４）次に、本発明の第４の実施例
について図４により説明する。(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG.
【００４１】なお、第１の実施例に示したものと異なる
構成についてのみ説明する。図に示すように、加熱コイ
ル保持台１３の外側面には上方が開口するＬ字状の装着
片２９が複数個設けられている。そして、その内面には
凹欠部３０が設けられ、この凹欠部３０にシールド部材
３１が装着されている。シールド部材３１は導電線を複
数ターン巻回し、その両端部をコネクタ３２で接続した
閉ループのソレノイドで形成されている。また、シール
ド部材３１と加熱コイル保持台１３との間には、その全
面あるいは数個所に弾力性を有する合成樹脂もしくは接
着剤、たとえば、シリコンゴム系の充填材あるいは接着
剤が介装されている。Only the structure different from that shown in the first embodiment will be described. As shown in the figure, a plurality of L-shaped mounting pieces 29 having an open top are provided on the outer surface of the heating coil holder 13. Then, a recessed portion 30 is provided on the inner surface thereof, and a shield member 31 is attached to the recessed portion 30. The shield member 31 is formed by a closed loop solenoid in which a conductive wire is wound a plurality of turns and both ends thereof are connected by connectors 32. Further, between the shield member 31 and the heating coil holding base 13, a synthetic resin or an adhesive having elasticity, for example, a silicone rubber-based filling material or an adhesive is provided on the entire surface or at several places. .
【００４２】上記構成において、シールド部材であるソ
レノイドはその両端部が接続されているので、加熱コイ
ル１５からの磁束によりシールド部材３１に誘導電流が
流れ、第１の実施例に示したものと同様に誘導電流は加
熱コイル１５から周囲に漏洩する磁界を低減する。この
場合、ソレノイドは複数ターン巻回されているのでその
低減効果が大きくなる。また、シールド部材３１を装着
片２９で挟持し、シールド部材３１と加熱コイル保持台
１３の間の全面または数個所に弾力性を有する合成樹脂
もしくは接着剤を介装してシールド部材３１のガタツキ
をなくしたので、加熱コイル１５に流れる電流とシール
ド部材３１に誘起される電流との相互作用によるシール
ド部材３１の振動が防止され、シールド部材３１と加熱
コイル保持台１３との接触による騒音の発生を防止する
ことができる。In the above structure, since both ends of the solenoid, which is a shield member, are connected, an induced current flows through the shield member 31 due to the magnetic flux from the heating coil 15, and the solenoid is the same as that shown in the first embodiment. The induced current reduces the magnetic field leaking from the heating coil 15 to the surroundings. In this case, since the solenoid is wound a plurality of turns, its reducing effect becomes large. Further, the shield member 31 is sandwiched by the mounting pieces 29, and the synthetic resin or adhesive having elasticity is interposed on the entire surface or at several places between the shield member 31 and the heating coil holding base 13 to prevent rattling of the shield member 31. Since it is eliminated, the vibration of the shield member 31 due to the interaction between the current flowing through the heating coil 15 and the current induced in the shield member 31 is prevented, and the generation of noise due to the contact between the shield member 31 and the heating coil holding base 13 is prevented. Can be prevented.
【００４３】このように本発明の第４の実施例によれ
ば、加熱コイル保持台１３の外側面に設けられた装着片
２９に閉ループのソレノイドからなるシールド部材３１
を装着し、シールド部材３１と加熱コイル保持台１３の
間に弾力性を有する合成樹脂もしくは接着剤を介装した
ことにより、加熱コイル１５から周囲に漏洩する磁界を
効果的に低減することができるとともに、シールド部材
３１の振動による騒音の発生を防止することができると
いう効果がある。As described above, according to the fourth embodiment of the present invention, the shield member 31 formed of a closed loop solenoid is attached to the mounting piece 29 provided on the outer surface of the heating coil holding base 13.
By mounting and by interposing the elastic synthetic resin or adhesive between the shield member 31 and the heating coil holder 13, the magnetic field leaking from the heating coil 15 to the surroundings can be effectively reduced. At the same time, it is possible to prevent the generation of noise due to the vibration of the shield member 31.
【００４４】[0044]
【発明の効果】以上の実施例の説明から明らかなよう
に、本発明によれば、加熱コイル保持台の外側面に形設
した電線装着部に絶縁部材で被覆された閉ループ状の複
数のシールド部材を積層装着したことにより、加熱コイ
ルから周囲に漏洩する磁界を効果的に、また、安価な費
用で低減することができる。As is apparent from the above description of the embodiments, according to the present invention, a plurality of closed-loop shields, each of which has an electric wire mounting portion formed on the outer surface of the heating coil holder, is covered with an insulating member. By stacking and mounting the members, the magnetic field leaking from the heating coil to the surroundings can be effectively reduced at low cost.
【００４５】また、加熱コイル保持台の周縁部に設けた
溝に導電線を装着して複数ターンの閉ループコイルを形
成したことにより、加熱コイルから周囲に漏洩する磁界
を効果的に低減することができるとともに、導電線に絶
縁被覆を施す必要がないので導電線のコストを低減する
ことができる。Further, since the conductive wire is attached to the groove provided in the peripheral portion of the heating coil holder to form a closed loop coil having a plurality of turns, the magnetic field leaking from the heating coil to the surroundings can be effectively reduced. In addition, since it is not necessary to apply an insulating coating to the conductive wire, the cost of the conductive wire can be reduced.
【００４６】また、導電線の両端部の接続時の絶縁被覆
剥離の手間を省くことができる。また、加熱コイル保持
台の外側面に形設した装着部に帯状の導電板をリング状
に成形した閉ループのシールド部材を装着し、シールド
部材と装着部の間に弾力性を有する合成樹脂もしくは接
着剤を介装させたことにより、加熱コイルから周囲に漏
洩する磁界を効果的に低減することができるとともに、
シールド部材の材料コストを低減することができる。さ
らに、シールド部材の振動による騒音の発生を防止する
ことができる。Further, it is possible to save the trouble of peeling the insulating coating when connecting both ends of the conductive wire. In addition, a closed-loop shield member formed by molding a band-shaped conductive plate into a ring shape is attached to the attachment portion formed on the outer surface of the heating coil holder, and a synthetic resin or adhesive having elasticity is attached between the shield member and the attachment portion. By interposing the agent, it is possible to effectively reduce the magnetic field leaking from the heating coil to the surroundings,
The material cost of the shield member can be reduced. Furthermore, it is possible to prevent the generation of noise due to the vibration of the shield member.
【００４７】また、加熱コイル保持台の外側面に設けら
れた装着片に閉ループのソレノイドからなるシールド部
材を装着し、シールド部材と加熱コイル保持台の間に弾
力性を有する合成樹脂もしくは接着剤を介装したことに
より、加熱コイルから周囲に漏洩する磁界を効果的に低
減することができるとともに、シールド部材の振動によ
る騒音の発生を防止することができる。Further, a shield member composed of a closed-loop solenoid is attached to an attachment piece provided on the outer surface of the heating coil holding base, and an elastic synthetic resin or an adhesive is placed between the shield member and the heating coil holding base. By interposing, it is possible to effectively reduce the magnetic field leaking from the heating coil to the surroundings, and it is possible to prevent the generation of noise due to the vibration of the shield member.
【００４８】このように本発明によれば、加熱コイルか
ら発生されて周囲に漏洩する磁界を低減することがで
き、しかも、低コスト化でき、また、シールド部材の振
動による騒音の発生を防止することができる誘導加熱調
理器を提供することができる。As described above, according to the present invention, the magnetic field generated from the heating coil and leaking to the surroundings can be reduced, the cost can be reduced, and the noise due to the vibration of the shield member can be prevented. It is possible to provide an induction heating cooker capable of performing the above.
【図１】（ａ）は本発明の第１の実施例の誘導加熱調理
器の側断面図 （ｂ）は同要部の分解斜視図FIG. 1A is a side sectional view of an induction heating cooker according to a first embodiment of the present invention, and FIG. 1B is an exploded perspective view of the main part thereof.
【図２】本発明の第２の実施例の誘導加熱調理器の要部
の側断面図FIG. 2 is a side sectional view of a main part of an induction heating cooker according to a second embodiment of the present invention.
【図３】本発明の第３の実施例の誘導加熱調理器の要部
の分解斜視図FIG. 3 is an exploded perspective view of a main part of an induction heating cooker according to a third embodiment of the present invention.
【図４】本発明の第４の実施例の誘導加熱調理器の要部
の分解斜視図FIG. 4 is an exploded perspective view of a main part of an induction heating cooker according to a fourth embodiment of the present invention.
【図５】従来例の誘導加熱調理器の側断面図FIG. 5 is a side sectional view of a conventional induction heating cooker.
１３ 加熱コイル保持台 １５ 加熱コイル １８ 周波数変換装置 １９ 電線装着部 ２０ａ，２０ｂ，２０ｃ，２０ｄ，２６，３１ シール
ド部材 ２３ 溝 ２４ 導電線 ２５ 装着部 ２８ 両端部 ２９ 装着片13 heating coil holder 15 heating coil 18 frequency converter 19 electric wire mounting portion 20a, 20b, 20c, 20d, 26, 31 shield member 23 groove 24 conductive wire 25 mounting portion 28 both ends 29 mounting piece
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 裕二 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Fujii 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (4)
電流を供給する周波数変換装置と、電気絶縁部材で形成
され前記加熱コイルを保持する加熱コイル保持台と、前
記加熱コイルの周囲に設けられ前記加熱コイルの磁束に
より誘導電流を発生する磁気シールド用導電部材とを備
え、前記磁気シールド用導電部材を絶縁部材で被覆され
た導電線を両端部で接続して閉ループ状に形成し、その
複数個を前記加熱コイル保持台の外側面に形設された装
着部に積層装着したことを特徴とする誘導加熱調理器。1. A heating coil, a frequency conversion device for supplying a high-frequency current to the heating coil, a heating coil holding base formed of an electrically insulating member for holding the heating coil, and a heating coil holder provided around the heating coil. A magnetic shield conductive member that generates an induced current by the magnetic flux of the heating coil, and the conductive wire covered with an insulating member is connected at both ends to form a closed loop, and a plurality of the magnetic shield conductive members are formed. The induction heating cooker is characterized in that the heating coil holder is stacked and mounted on a mounting portion formed on the outer surface of the heating coil holding base.
電流を供給する周波数変換装置と、電気絶縁部材で形成
され前記加熱コイルを保持する加熱コイル保持台と、前
記加熱コイルの周囲に設けられ前記加熱コイルの磁束に
より誘導電流を発生する磁気シールド用導電部材とを備
え、前記磁気シールド用導電部材を導電線で形成して前
記加熱コイル保持台の周縁部に形設された溝に装着する
とともに、その両端部を接続して閉ループ状に形成した
ことを特徴とする誘導加熱調理器。2. A heating coil, a frequency conversion device for supplying a high frequency current to the heating coil, a heating coil holding base formed of an electrically insulating member for holding the heating coil, and provided around the heating coil. A magnetic shield conductive member that generates an induced current by the magnetic flux of the heating coil, and the magnetic shield conductive member is formed of a conductive wire and mounted in a groove formed in the peripheral portion of the heating coil holder. An induction heating cooker characterized in that both ends thereof are connected to form a closed loop.
電流を供給する周波数変換装置と、電気絶縁部材で形成
され前記加熱コイルを保持する加熱コイル保持台と、前
記加熱コイルの周囲に設けられ前記加熱コイルの磁束に
より誘導電流を発生する磁気シールド用導電部材とを備
え、前記磁気シールド用導電部材を帯状の導電板の両端
部を接続して閉ループ状に形成し、前記加熱コイル保持
台の外側面に形設された装着部に装着するとともに、前
記磁気シールド用導電部材と前記装着部の間に接着剤も
しくは弾力性を有する合成樹脂を介装したことを特徴と
する誘導加熱調理器。3. A heating coil, a frequency converter for supplying a high-frequency current to the heating coil, a heating coil holding base formed of an electrically insulating member for holding the heating coil, and provided around the heating coil. A magnetic shield conductive member that generates an induced current by the magnetic flux of the heating coil, and the magnetic shield conductive member is formed into a closed loop by connecting both ends of a strip-shaped conductive plate, An induction heating cooker, which is mounted on a mounting portion formed on a side surface, and an adhesive or a synthetic resin having elasticity is interposed between the magnetic shield conductive member and the mounting portion.
電流を供給する周波数変換装置と、電気絶縁部材で形成
され前記加熱コイルを保持する加熱コイル保持台と、前
記加熱コイルの周囲に設けられ前記加熱コイルの磁束に
より誘導電流を発生する磁気シールド用導電部材とを備
え、前記磁気シールド用導電部材を両端を接続した複数
ターンの閉ループのソレノイドで形成し、前記加熱コイ
ル保持台の外側面に形成されたソレノイド装着部に装着
するとともに、前記ソレノイドと前記装着部の間に弾力
性を有する合成樹脂もしくは接着剤を介装したことを特
徴とする誘導加熱調理器。4. A heating coil, a frequency conversion device for supplying a high frequency current to the heating coil, a heating coil holding base formed of an electrically insulating member for holding the heating coil, and provided around the heating coil. A conductive member for magnetic shield that generates an induced current by the magnetic flux of the heating coil, and the conductive member for magnetic shield is formed by a closed loop solenoid with a plurality of turns connecting both ends, and is formed on the outer surface of the heating coil holder. The induction heating cooker is characterized in that it is mounted on the solenoid mounting portion and a resilient synthetic resin or adhesive is interposed between the solenoid and the mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16053293A JP3163520B2 (en) | 1993-06-30 | 1993-06-30 | Induction heating cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16053293A JP3163520B2 (en) | 1993-06-30 | 1993-06-30 | Induction heating cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0722170A true JPH0722170A (en) | 1995-01-24 |
| JP3163520B2 JP3163520B2 (en) | 2001-05-08 |
Family
ID=15717011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16053293A Expired - Lifetime JP3163520B2 (en) | 1993-06-30 | 1993-06-30 | Induction heating cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163520B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2147153A1 (en) * | 1998-11-30 | 2000-08-16 | Balay Sa | Cooker induction coil with magnetic perimeter shielding |
| JP2002319479A (en) * | 2001-04-19 | 2002-10-31 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2003308954A (en) * | 2002-04-16 | 2003-10-31 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2004039265A (en) * | 2002-06-28 | 2004-02-05 | Tabuchi Electric Co Ltd | Coil device for induction heating equipped with shield ring |
| JP2004342338A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2004342339A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2008064367A (en) * | 2006-09-06 | 2008-03-21 | Fuji Electric Systems Co Ltd | Induction heating type steam generating device |
| JP2008117726A (en) * | 2006-11-08 | 2008-05-22 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| CN102088801A (en) * | 2011-03-08 | 2011-06-08 | 林晓光 | Electromagnetic induction heating magnetic leakage absorbing coil of solenoid heating coil |
| JP4891433B1 (en) * | 2010-11-09 | 2012-03-07 | 三菱電機株式会社 | Induction heating cooker |
| CN103416102A (en) * | 2011-02-28 | 2013-11-27 | 三菱电机株式会社 | Cooking device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5732909B2 (en) * | 2011-02-28 | 2015-06-10 | 三菱マテリアル株式会社 | Infrared sensor device and induction heating cooker provided with the same |
-
1993
- 1993-06-30 JP JP16053293A patent/JP3163520B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2147153A1 (en) * | 1998-11-30 | 2000-08-16 | Balay Sa | Cooker induction coil with magnetic perimeter shielding |
| JP2002319479A (en) * | 2001-04-19 | 2002-10-31 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2003308954A (en) * | 2002-04-16 | 2003-10-31 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2004039265A (en) * | 2002-06-28 | 2004-02-05 | Tabuchi Electric Co Ltd | Coil device for induction heating equipped with shield ring |
| JP2004342338A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2004342339A (en) * | 2003-05-13 | 2004-12-02 | Mitsubishi Electric Corp | Induction heating cooker |
| JP2008064367A (en) * | 2006-09-06 | 2008-03-21 | Fuji Electric Systems Co Ltd | Induction heating type steam generating device |
| JP2008117726A (en) * | 2006-11-08 | 2008-05-22 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP4891433B1 (en) * | 2010-11-09 | 2012-03-07 | 三菱電機株式会社 | Induction heating cooker |
| CN103416102A (en) * | 2011-02-28 | 2013-11-27 | 三菱电机株式会社 | Cooking device |
| CN103416102B (en) * | 2011-02-28 | 2015-11-25 | 三菱电机株式会社 | Heating device |
| CN102088801A (en) * | 2011-03-08 | 2011-06-08 | 林晓光 | Electromagnetic induction heating magnetic leakage absorbing coil of solenoid heating coil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3163520B2 (en) | 2001-05-08 |
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