JP2006294434A - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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JP2006294434A
JP2006294434A JP2005114152A JP2005114152A JP2006294434A JP 2006294434 A JP2006294434 A JP 2006294434A JP 2005114152 A JP2005114152 A JP 2005114152A JP 2005114152 A JP2005114152 A JP 2005114152A JP 2006294434 A JP2006294434 A JP 2006294434A
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heating coil
induction heating
magnetic
magnetic field
shielding means
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JP2005114152A
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JP4654743B2 (en
JP2006294434A5 (en
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Yasushi Morimoto
泰史 森本
Hideaki Kobayashi
英明 小林
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To effectively restrain a magnetic field from leaking from a heating coil. <P>SOLUTION: This induction heating cooker is provided with a magnetic shield means for absorbing a leakage magnetic field in a support part and thereby efficiently restraining the leakage magnetic field generated from the heating coil. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明はコイルからの磁束漏れを低減する防磁手段を設けた誘導加熱調理器の構成に関するものである。   The present invention relates to a configuration of an induction heating cooker provided with a magnetic shielding means for reducing magnetic flux leakage from a coil.

近年、誘導加熱調理器はその高火力化が図られ、それに伴い周辺に漏洩する磁界を効果的に抑制することが必要となっている。従来、この種の誘導加熱調理器は、漏洩磁界を抑制する方法として、加熱コイルの外周に導電性金属板をループ状に形成し漏洩磁界抑制を行っている(例えば、特許文献1参照)。   In recent years, induction heating cookers have been increased in thermal power, and accordingly, it is necessary to effectively suppress magnetic fields leaking to the periphery. Conventionally, this type of induction heating cooker suppresses the leakage magnetic field by forming a conductive metal plate in a loop shape on the outer periphery of the heating coil as a method of suppressing the leakage magnetic field (see, for example, Patent Document 1).

図5は、特許文献1に記載された従来の誘導加熱調理器を示すものである。図5に示すように、誘導加熱調理器の加熱コイル101と、加熱コイル101を保持する加熱コイル保持部102と、加熱コイル101に高周波電流を供給する周波数変換装置と、加熱コイル101の外周近傍に平帯状の導電金属板をループ状に形成した磁気シールド板103で構成されている。
特開2002−319479号公報
FIG. 5 shows a conventional induction heating cooker described in Patent Document 1. As shown in FIG. As shown in FIG. 5, the heating coil 101 of the induction heating cooker, the heating coil holding unit 102 that holds the heating coil 101, the frequency converter that supplies high-frequency current to the heating coil 101, and the vicinity of the outer periphery of the heating coil 101 The magnetic shield plate 103 is formed by forming a flat strip-like conductive metal plate in a loop shape.
JP 2002-319479 A

しかしながら、近年の誘導加熱調理器の高火力化により加熱コイルからの漏洩磁界が増加し、上記従来の構成では、機器から発生する漏洩磁界を一定基準内に抑制することが困難になってきたという課題を有していた。   However, due to the recent increase in thermal power of induction heating cookers, the leakage magnetic field from the heating coil has increased, and with the above conventional configuration, it has become difficult to suppress the leakage magnetic field generated from the equipment within a certain standard. Had problems.

本発明は、上記従来の課題を解決するもので、加熱コイルからの漏洩磁界を低減する防磁手段を加熱コイル保持部を支持する支持部に設けることで、加熱コイルから発生される漏洩磁界を効率よく抑制することができる誘導加熱調理器を提供することを目的とする。   The present invention solves the above-described conventional problems, and by providing a support portion that supports the heating coil holding portion with a magnetic-shielding means that reduces the leakage magnetic field from the heating coil, the leakage magnetic field generated from the heating coil is efficiently reduced. It aims at providing the induction heating cooking appliance which can be suppressed well.

前記従来の課題を解決するために、本発明の誘導加熱調理器は、誘導加熱用の加熱コイルと、前記加熱コイルを保持する加熱コイル保持部と、前記加熱コイルに高周波電流を供給する周波数変換装置と、前記加熱コイル保持部を支持する支持部と、前記加熱コイルの外周近傍には前記加熱コイル保持部に設けた導電性金属をループ状に形成した磁気シールド板と、前記加熱コイルからの漏洩磁界を低減する防磁手段を前記支持部に設けたものである。   In order to solve the conventional problem, an induction heating cooker according to the present invention includes a heating coil for induction heating, a heating coil holding unit that holds the heating coil, and a frequency conversion that supplies a high-frequency current to the heating coil. An apparatus, a support part for supporting the heating coil holding part, a magnetic shield plate formed in a loop shape with a conductive metal provided on the heating coil holding part in the vicinity of the outer periphery of the heating coil, and Magnetic support means for reducing the leakage magnetic field is provided on the support portion.

これによって、加熱コイルからの漏洩磁界を低減する防磁手段を加熱コイル保持部を支持する支持部に設けることで、加熱コイルから発生される漏洩磁界を効率よく抑制することとなる。   As a result, the magnetic field leakage generated from the heating coil is efficiently suppressed by providing the magnetic-shielding means for reducing the leakage magnetic field from the heating coil in the support part that supports the heating coil holding part.

本発明の誘導加熱調理器は、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   The induction cooking device of the present invention can efficiently suppress the leakage magnetic field generated from the heating coil.

第1の発明は、誘導加熱用の加熱コイルと、前記加熱コイルを保持する加熱コイル保持部と、前記加熱コイルに高周波電流を供給する周波数変換装置と、前記加熱コイル保持部を支持する支持部と、前記加熱コイルの外周近傍には前記加熱コイル保持部に設けた導電性金属をループ状に形成した磁気シールド板と、漏洩磁界を吸収する防磁手段を前記支持部に設けることにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   1st invention is the heating coil for induction heating, the heating coil holding part holding the said heating coil, the frequency converter which supplies a high frequency current to the said heating coil, and the support part which supports the said heating coil holding part In the vicinity of the outer periphery of the heating coil, the heating coil is provided with a magnetic shield plate formed of a conductive metal provided in the heating coil holding part in a loop shape and a magnetic shielding means for absorbing a leakage magnetic field in the support part. It is possible to efficiently suppress the leakage magnetic field generated from.

第2の発明は、加熱コイル保持部には磁束の指向性を向上させる加熱用フェライトを設けることにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the second aspect of the present invention, the leakage magnetic field generated from the heating coil can be efficiently suppressed by providing the heating coil holding portion with the heating ferrite that improves the directivity of the magnetic flux.

第3の発明は、防磁手段を加熱コイルの下方に設けたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   In the third aspect of the invention, the magnetic field leakage generated from the heating coil can be efficiently suppressed by providing the magnetic-shielding means below the heating coil.

第4発明は、防磁手段を加熱コイル用フェライトと周波数変換装置の間に設けたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the fourth aspect of the present invention, the leakage magnetic field generated from the heating coil can be efficiently suppressed by providing the magnetic shield means between the ferrite for heating coil and the frequency converter.

第5発明は、防磁手段を加熱コイルと周波数変換装置の間に設けたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the fifth aspect of the present invention, the leakage magnetic field generated from the heating coil can be efficiently suppressed by providing the magnetic shielding means between the heating coil and the frequency converter.

第6発明は、防磁手段をフェライトで構成されたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the sixth aspect of the present invention, the magnetic field preventing means is made of ferrite, so that the leakage magnetic field generated from the heating coil can be efficiently suppressed.

第7発明は、防磁手段を加熱コイルの中心より放射状に設けたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the seventh aspect of the present invention, the leakage magnetic field generated from the heating coil can be efficiently suppressed by providing the magnetic shielding means radially from the center of the heating coil.

第8発明は、防磁手段を加熱コイルの中心より前方に設けたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the eighth aspect of the present invention, the leakage magnetic field generated from the heating coil can be efficiently suppressed by providing the magnetic shielding means in front of the center of the heating coil.

第9発明は、防磁手段は加熱コイルと同心円のリング形状としたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the ninth aspect of the present invention, the magnetic field shielding means has a ring shape concentric with the heating coil, so that the leakage magnetic field generated from the heating coil can be efficiently suppressed.

第10発明は、防磁手段は支持部に設けられた爪により固定されたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   According to the tenth aspect of the present invention, the magnetic field shielding means is fixed by the claw provided on the support portion, so that the leakage magnetic field generated from the heating coil can be efficiently suppressed.

第11発明は、防磁手段は支持部と一体成型されたことにより、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   In the eleventh aspect of the present invention, the magnetic field shielding means is integrally formed with the support portion, so that the leakage magnetic field generated from the heating coil can be efficiently suppressed.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(実施の形態1)
図1は本発明の第1の実施形態における誘導加熱調理器の主要断面図、図2は同誘導加熱調理器の加熱コイル部の平面図である。
(Embodiment 1)
FIG. 1 is a main cross-sectional view of an induction heating cooker according to the first embodiment of the present invention, and FIG. 2 is a plan view of a heating coil portion of the induction heating cooker.

図1〜2において、非磁性体で構成されたトッププレート5の下方には加熱コイル1を設け、加熱コイル1は加熱コイル保持部2によって保持されている。加熱コイル1と加熱コイル保持部2は接着や樹脂部品等を介してネジ止めによって締結されている。加熱コイル保持部2は支持部3の上方にあり、バネ4によりトッププレート5方向に付勢されている。バネ4は複数設けられ加熱コイル1とトッププレート5が略平行になるように配置されている。加熱コイル保持部2には磁束をトッププレート5側に指向させる加熱用フェライト6を加熱コイル1の中心より放射状に複数設けている。加熱コイル1の外周には導電性材料で形成された磁気シールド板7を配置し、磁気シールド板7の内径は加熱コイル1と同心円とし外形は同心円でなくても良い。磁気シールド板7の内径と加熱コイル1の外形は電気的に必要な絶縁距離を確保できる範疇で近接するのが望ましい。磁気シールド板7は加熱コイル保持部2に接着やネジ止めによって締結されるか、一体成型によって構成されている。支持部3には加熱コイル1からの漏洩磁界を低減する防磁手段である防磁フェライト8を設けている。防磁手段は漏洩磁界の周波数帯に応じて材質を選定するが、一般的に誘導加熱調理器ではフェライトや珪素鋼板が望ましい。また鋼板を使用する場合は積層することによって防磁効果が拡大される。また防磁フェライト8は加熱コイル1及び加熱用フェライト6の下方に配置されるが、防磁手段はトッププレート5側から投影して加熱用フェライト6と防磁フェライト8が重ならない位置に配置する。防磁フェライト8の長手方向の寸法はコイルケースの半径より長いものである。支持部3の下方には周波数変換装置である駆動回路9を設けている。支持部3は加熱コイル保持部2の支持と、駆動回路9と加熱コイル1の熱遮蔽を同時に行っているものである。また支持部3は駆動回路9を取付けている部材で形成してもよい。支持部3には複数の突起部が設けられ、突起部の外周にコイル型のバネ4が配置されている。防磁フェライト8は支持部3の上方表面より突起して取付けられ駆動回路9の上部に取付けられている。防磁フェライト8は支持部に設けられた弾性を有するつめであるフェライト固定部3aにより固定されている。フェライト固定部3aは各防磁フェライト8につき複数設け、フェライト固定部3aにより防磁フェライトの振動及び脱落等を防止している。   1 and 2, a heating coil 1 is provided below a top plate 5 made of a nonmagnetic material, and the heating coil 1 is held by a heating coil holding unit 2. The heating coil 1 and the heating coil holding part 2 are fastened by screwing via adhesion or resin parts. The heating coil holding part 2 is above the support part 3 and is urged toward the top plate 5 by a spring 4. A plurality of springs 4 are provided, and the heating coil 1 and the top plate 5 are arranged substantially in parallel. The heating coil holder 2 is provided with a plurality of heating ferrites 6 that direct magnetic flux toward the top plate 5 side radially from the center of the heating coil 1. A magnetic shield plate 7 made of a conductive material is disposed on the outer periphery of the heating coil 1. The inner diameter of the magnetic shield plate 7 may be concentric with the heating coil 1, and the outer shape may not be concentric. It is desirable that the inner diameter of the magnetic shield plate 7 and the outer shape of the heating coil 1 are close to each other within a range that can secure an electrically necessary insulation distance. The magnetic shield plate 7 is fastened to the heating coil holding part 2 by bonding or screwing, or is formed by integral molding. The support portion 3 is provided with a magnetic-shielding ferrite 8 that is a magnetic-shielding means for reducing the leakage magnetic field from the heating coil 1. The material for the magnetic shield is selected according to the frequency band of the leakage magnetic field, but in general, an induction heating cooker is preferably a ferrite or a silicon steel plate. Moreover, when using a steel plate, a magnetic-shield effect is expanded by laminating | stacking. The magnetic shield ferrite 8 is disposed below the heating coil 1 and the heating ferrite 6, but the magnetic shield means is projected from the top plate 5 side and disposed at a position where the heating ferrite 6 and the magnetic shield ferrite 8 do not overlap. The longitudinal dimension of the magnetic-shielding ferrite 8 is longer than the radius of the coil case. A drive circuit 9 that is a frequency converter is provided below the support portion 3. The support part 3 performs the support of the heating coil holding part 2 and the heat shielding of the drive circuit 9 and the heating coil 1 simultaneously. The support portion 3 may be formed of a member to which the drive circuit 9 is attached. The support part 3 is provided with a plurality of protrusions, and a coil-type spring 4 is disposed on the outer periphery of the protrusions. The magnetic-shielding ferrite 8 is attached so as to protrude from the upper surface of the support portion 3 and is attached to the upper portion of the drive circuit 9. The magnetic shield ferrite 8 is fixed by a ferrite fixing portion 3a which is an elastic pawl provided on the support portion. A plurality of ferrite fixing portions 3a are provided for each of the magnetic-shielding ferrites 8, and the ferrite fixing portions 3a prevent the magnetic-shielding ferrite from vibrating and falling off.

以上のように構成された誘導加熱調理器について、以下その動作、作用を説明する。   About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

まず、加熱コイル1に周波数変換装置である駆動回路9から高周波電流が供給されると、加熱コイル1から磁束が発生してトッププレート5に載置された鍋等にその磁界が鎖交し、鍋に渦電流が発生して鍋が加熱される。一方、加熱コイル1から発生する磁界は磁気シールド板7形成する閉曲面とも鎖交しており、磁気シールド板7誘導電流が発生する。このため、磁気シールド板7の内方ではこの誘導電流により磁界が強まり、また磁気シールド板7の外方においては磁界が弱まるので、その外側の磁界を抑制することができる。より磁束をトッププレート5側に指向させるために、加熱用フェライト6を加熱コイル1の下方で加熱コイル保持部2に設けることで効果的に鍋を加熱することができる。さらに、防磁フェライト8は加熱コイル1の下方や放射状に生じる磁界を吸収し、漏洩磁界を抑制する効果を得ることができる。防磁手段である防磁フェライト8は加熱コイル1と周波数変換装置である駆動回路9の間に設けることで加熱コイル1から生じた漏洩磁界が駆動回路に誤動作等の影響を及ぼすことを防止することができる。防磁フェライト8はトッププレート5側から投影して加熱用フェライト6と重ならない位置に配置することでより効果的に漏洩磁界を抑制することが可能となる。防磁フェライト8の長手方向を加熱コイル1の中心よりの放射方向にすることで、加熱コイル1から生じる漏洩磁界と直交する部分が拡大するためより効果的に効果的に漏洩磁界を抑制することが可能となる。また防磁フェライト8は加熱コイル1の半径よりも長手方向に長く、さらにトッププレート5より投影したとき加熱コイル1の外形より外側まで伸びた形状にすることでより一層の漏洩磁界を抑制することが可能となる。弾性を有するつめであるフェライト固定部3aで防磁フェライト8を支持部3に固定することで安価に漏洩磁界を抑制することが可能となる。また防磁フェライト8と支持部3を一体成型することで安価に漏洩磁界を抑制することが可能となる。   First, when a high frequency current is supplied to the heating coil 1 from the drive circuit 9 that is a frequency converter, a magnetic flux is generated from the heating coil 1 and the magnetic field is linked to a pan or the like placed on the top plate 5, An eddy current is generated in the pan and the pan is heated. On the other hand, the magnetic field generated from the heating coil 1 is also linked to the closed curved surface formed by the magnetic shield plate 7, and an induced current of the magnetic shield plate 7 is generated. For this reason, the magnetic field is strengthened by the induced current inside the magnetic shield plate 7, and the magnetic field is weakened outside the magnetic shield plate 7, so that the magnetic field outside the magnetic shield plate 7 can be suppressed. In order to direct the magnetic flux more toward the top plate 5 side, the pot can be effectively heated by providing the heating ferrite 6 on the heating coil holding part 2 below the heating coil 1. Furthermore, the magnetic-shielding ferrite 8 can absorb the magnetic field which is generated below and radially from the heating coil 1 and can obtain the effect of suppressing the leakage magnetic field. By providing the magnetic-shielding ferrite 8 as the magnetic-shielding means between the heating coil 1 and the drive circuit 9 as the frequency converter, it is possible to prevent the leakage magnetic field generated from the heating coil 1 from affecting the drive circuit due to malfunction or the like. it can. The magnetic-shielding ferrite 8 is projected from the top plate 5 side and disposed at a position that does not overlap the heating ferrite 6, so that the leakage magnetic field can be more effectively suppressed. By setting the longitudinal direction of the magnetic-shielding ferrite 8 to the radial direction from the center of the heating coil 1, the portion perpendicular to the leakage magnetic field generated from the heating coil 1 is expanded, so that the leakage magnetic field can be more effectively suppressed. It becomes possible. Further, the magnetic shield ferrite 8 is longer in the longitudinal direction than the radius of the heating coil 1 and further extends to the outside of the outer shape of the heating coil 1 when projected from the top plate 5 to further suppress the leakage magnetic field. It becomes possible. By fixing the magnetic-shielding ferrite 8 to the support portion 3 with the ferrite fixing portion 3a that is an elastic pawl, it is possible to suppress the leakage magnetic field at low cost. Further, by integrally molding the magnetic shield ferrite 8 and the support portion 3, it is possible to suppress the leakage magnetic field at low cost.

以上のように、本実施の形態においては、加熱コイルから発生される漏洩磁界を効率よく抑制することができる。   As described above, in the present embodiment, the leakage magnetic field generated from the heating coil can be efficiently suppressed.

(実施の形態2)
図3は、本発明の第2の実施形態の誘導加熱調理器の加熱コイル部の平面図である。
(Embodiment 2)
FIG. 3 is a plan view of the heating coil portion of the induction heating cooker according to the second embodiment of the present invention.

図3において、防磁手段である防磁フェライト8を加熱コイル1の中心より前方に設けることで、機体前方への漏洩磁界を防磁フェライトで吸収することで抑制することができ、使用者などへ漏洩磁界の影響を低減する効果を得ることができる。   In FIG. 3, by providing a magnetic-shielding ferrite 8 as a magnetic-shielding means in front of the center of the heating coil 1, it is possible to suppress the leakage magnetic field to the front of the machine body by absorbing the magnetic-shielding ferrite. The effect which reduces the influence of this can be acquired.

(実施の形態3)
図4は、本発明の第3の実施形態の誘導加熱調理器の加熱コイル部の平面図である。
(Embodiment 3)
FIG. 4 is a plan view of the heating coil portion of the induction heating cooker according to the third embodiment of the present invention.

図4において防磁手段である防磁フェライト8を加熱コイル1と同心円のリング形状にすることにより、より効果的に漏洩磁界を抑制することが可能となる。   In FIG. 4, it is possible to more effectively suppress the leakage magnetic field by making the magnetic-shielding ferrite 8 as the magnetic-shielding means concentric with the heating coil 1.

以上のように、本発明にかかわる誘導加熱調理器は漏洩磁界を抑制する誘導加熱調理器の用途として有用である。   As described above, the induction heating cooker according to the present invention is useful as an application of the induction heating cooker that suppresses the leakage magnetic field.

本発明の第1の実施形態を示す誘導加熱調理器の主要断面図Main sectional drawing of the induction heating cooking appliance which shows the 1st Embodiment of this invention 本発明の第1の実施形態を示す誘導加熱調理器の加熱コイル部の平面図The top view of the heating coil part of the induction heating cooking appliance which shows the 1st Embodiment of this invention 本発明の第2の実施形態を示す誘導加熱調理器の加熱コイル部の平面図The top view of the heating coil part of the induction heating cooking appliance which shows the 2nd Embodiment of this invention 本発明の第3の実施形態を示す誘導加熱調理器の加熱コイル部の平面図The top view of the heating coil part of the induction heating cooking appliance which shows the 3rd Embodiment of this invention 従来例を示す誘導加熱調理器の主要断面図Main sectional view of induction heating cooker showing conventional example

符号の説明Explanation of symbols

1 加熱コイル
2 加熱コイル保持部
3 支持部
3a フェライト固定部
4 バネ
5 トッププレート
6 加熱用フェライト
8 防磁フェライト
9 駆動回路
DESCRIPTION OF SYMBOLS 1 Heating coil 2 Heating coil holding | maintenance part 3 Supporting part 3a Ferrite fixing | fixed part 4 Spring 5 Top plate 6 Ferrite for heating 8 Magnetic-shield ferrite 9 Drive circuit

Claims (11)

誘導加熱用の加熱コイルと、前記加熱コイルを保持する加熱コイル保持部と、前記加熱コイルに高周波電流を供給する周波数変換装置と、前記加熱コイル保持部を支持する支持部と、前記加熱コイルの外周近傍には前記加熱コイル保持部に設けた導電性金属をループ状に形成した磁気シールド板と、前記加熱コイルからの漏洩磁界を低減する防磁手段を前記支持部に設けた誘導加熱調理器。 A heating coil for induction heating; a heating coil holding part that holds the heating coil; a frequency converter that supplies a high-frequency current to the heating coil; a support part that supports the heating coil holding part; and In the vicinity of the outer periphery, an induction heating cooker provided with a magnetic shield plate formed of a conductive metal provided in the heating coil holding part in a loop shape and a magnetic shielding means for reducing a leakage magnetic field from the heating coil in the support part. 加熱コイル保持部には磁束の指向性を向上させる加熱用フェライトを設けた請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the heating coil holding portion is provided with heating ferrite for improving the directivity of magnetic flux. 防磁手段を加熱コイルの下方に設けた請求項2記載の誘導加熱調理器。 The induction heating cooker according to claim 2, wherein a magnetic shielding means is provided below the heating coil. 防磁手段を加熱コイル用フェライトとの間に設けた請求項2記載の誘導加熱調理器。 The induction heating cooker according to claim 2, wherein a magnetic shielding means is provided between the ferrite for the heating coil. 防磁手段を加熱コイルと周波数変換装置の間に設けた請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein a magnetic shielding means is provided between the heating coil and the frequency converter. 防磁手段をフェライトで構成された請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shielding means is made of ferrite. 防磁手段を加熱コイルの中心より放射状に設けた請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shielding means is provided radially from the center of the heating coil. 防磁手段を加熱コイルの中心より前方に設けた請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shielding means is provided in front of the center of the heating coil. 防磁手段は加熱コイルと同心円のリング形状とした請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shield means has a ring shape concentric with the heating coil. 防磁手段は支持部に設けられたつめにより固定された請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shielding means is fixed by a claw provided on the support portion. 防磁手段は支持部と一体成型された請求項1記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein the magnetic shielding means is integrally formed with the support portion.
JP2005114152A 2005-04-12 2005-04-12 Induction heating cooker Expired - Fee Related JP4654743B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011222402A (en) * 2010-04-13 2011-11-04 Chubu Electric Power Co Inc Heating apparatus
JP2021005440A (en) * 2019-06-25 2021-01-14 パナソニックIpマネジメント株式会社 Induction heating cooker

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Publication number Priority date Publication date Assignee Title
JPS5324644A (en) * 1976-08-20 1978-03-07 Matsushita Electric Ind Co Ltd Induction-heating cooker
JPS59114787A (en) * 1982-12-20 1984-07-02 松下電器産業株式会社 Induction heating cooking device
JPS6220290A (en) * 1985-07-19 1987-01-28 松下電器産業株式会社 Induction heating cooker
JPS6347595U (en) * 1986-09-16 1988-03-31
JPH08250272A (en) * 1995-03-14 1996-09-27 Matsushita Electric Ind Co Ltd Induction cooking appliance and manufacture of magnetic shield part thereof
JP2003086341A (en) * 2001-09-13 2003-03-20 Sanyo Electric Co Ltd Induction heating cooker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324644A (en) * 1976-08-20 1978-03-07 Matsushita Electric Ind Co Ltd Induction-heating cooker
JPS59114787A (en) * 1982-12-20 1984-07-02 松下電器産業株式会社 Induction heating cooking device
JPS6220290A (en) * 1985-07-19 1987-01-28 松下電器産業株式会社 Induction heating cooker
JPS6347595U (en) * 1986-09-16 1988-03-31
JPH08250272A (en) * 1995-03-14 1996-09-27 Matsushita Electric Ind Co Ltd Induction cooking appliance and manufacture of magnetic shield part thereof
JP2003086341A (en) * 2001-09-13 2003-03-20 Sanyo Electric Co Ltd Induction heating cooker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011222402A (en) * 2010-04-13 2011-11-04 Chubu Electric Power Co Inc Heating apparatus
JP2021005440A (en) * 2019-06-25 2021-01-14 パナソニックIpマネジメント株式会社 Induction heating cooker
JP7241259B2 (en) 2019-06-25 2023-03-17 パナソニックIpマネジメント株式会社 induction cooker

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