JP3405949B2 - Induction heating cooker - Google Patents
Induction heating cookerInfo
- Publication number
- JP3405949B2 JP3405949B2 JP2000008941A JP2000008941A JP3405949B2 JP 3405949 B2 JP3405949 B2 JP 3405949B2 JP 2000008941 A JP2000008941 A JP 2000008941A JP 2000008941 A JP2000008941 A JP 2000008941A JP 3405949 B2 JP3405949 B2 JP 3405949B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic shield
- induction heating
- holder
- shield plate
- heating cooker
- 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.)
- Expired - Lifetime
Links
- 230000006698 induction Effects 0.000 title claims description 43
- 238000010438 heat treatment Methods 0.000 title claims description 41
- 230000005291 magnetic effect Effects 0.000 claims description 69
- 229910000859 α-Fe Inorganic materials 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 239000012811 non-conductive material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 description 21
- 241000209094 Oryza Species 0.000 description 14
- 235000007164 Oryza sativa Nutrition 0.000 description 14
- 235000009566 rice Nutrition 0.000 description 14
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Cookers (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、誘導加熱方式の炊
飯器や電磁調理器等の誘導加熱調理器に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker such as an induction heating type rice cooker or an electromagnetic cooker.
【０００２】[0002]
【従来の技術】従来、この種の誘導加熱調理器として
は、例えば、特開平１１−５６６０４号で炊飯器が提供
されている。この炊飯器の本体は、胴体と底体とからな
る外装体の内部に被加熱物である内鍋を収容する非導電
性部材である保護枠の下面に、高周波電流を通電するこ
とにより電磁波を発生する誘導加熱コイルが配設されて
いる。また、前記外装体の底体には、前記電磁波が外部
に漏れないようにするために、該電磁波を内鍋側に反射
する防磁板が配設されている。これにより、保護枠内に
配設した内鍋は、前記電磁波により渦電流が発生するこ
とにより、電磁誘導加熱される。2. Description of the Related Art Conventionally, as this type of induction heating cooker, for example, a rice cooker is provided in Japanese Patent Laid-Open No. 11-56604. The main body of this rice cooker is a non-conductive member for accommodating an inner pot, which is an object to be heated, inside an exterior body consisting of a body and a bottom body. An induction heating coil to be generated is arranged. In addition, a magnetic shielding plate that reflects the electromagnetic waves to the inner pot side is provided on the bottom of the exterior body in order to prevent the electromagnetic waves from leaking to the outside. As a result, the inner pan provided in the protective frame is heated by electromagnetic induction due to the eddy current generated by the electromagnetic waves.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記誘
導加熱調理器は、前記外装体の底体に防磁板を取り付け
るための取付構造を設ける必要があるため、デザインの
自由度が低い。また、前記取付構造が余分なスペースを
占有するため、小型化が困難である。However, the induction heating cooker has a low degree of freedom in design because it is necessary to provide a mounting structure for mounting the magnetic shield to the bottom body of the exterior body. Further, since the mounting structure occupies an extra space, downsizing is difficult.
【０００４】そこで、本発明では、デザインの自由度を
向上できるとともに小型化を図ることを課題とするもの
である。Therefore, an object of the present invention is to improve the degree of freedom of design and to reduce the size.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するた
め、本発明の誘導加熱調理器は、胴体と底体とからなる
外装体の内部に、非導電性部材を介して被加熱物を誘導
加熱する誘導加熱コイルと、該誘導加熱コイルの下方に
配設され非導電性材料からなるホルダによって保持され
た複数のフェライトコアと、該フェライトコアの下方に
配置される防磁板とを備えた誘導加熱調理器において、
前記非導電性部材またはホルダに、前記防磁板の下面に
係止する係止部を備えた取付片を設けるとともに、前記
非導電性部材またはホルダに、前記防磁板の上面を支持
する支持部を設け、前記支持部は、前記防磁板を下向き
に押圧するように弾性を有しており、前記防磁板を、前
記支持部と前記取付片との間に挟持して取り付けるよう
に構成している。In order to solve the above-mentioned problems, the induction heating cooker of the present invention guides the object to be heated into the exterior body composed of the body and the bottom body through the non-conductive member. Induction provided with an induction heating coil to be heated, a plurality of ferrite cores arranged below the induction heating coil and held by a holder made of a non-conductive material, and a magnetic shield plate arranged below the ferrite core. In the cooker,
The non-conductive member or holder is provided with a mounting piece provided with a locking portion that is locked to the lower surface of the magnetic shield plate, and the non-conductive member or holder is provided with a support portion for supporting the upper surface of the magnetic shield plate. The support portion has elasticity so as to press the magnetic shield plate downward, and the magnetic shield plate is configured to be sandwiched and mounted between the support portion and the mounting piece. .
【０００６】前記誘導加熱調理器によれば、防磁板を、
誘導加熱コイルを配設した非導電部材側に防磁板を配置
するため、誘導加熱調理器の外装体を構成する底体の制
約が無くなる。その結果、外装体のデザインの自由度が
高くなるとともに、小型化が可能になる。具体的には、
防磁板は、支持部と前記取付片との間に挟持して取り付
ける構成としているため、該防磁板が下方に脱落するこ
とを防止し、かつ、動作時に防磁板の振動を防止した状
態で確実に取り付けることができる。また、前記支持部
は、前記防磁板を下向きに押圧するように弾性を有して
いるため、防磁板の取付状態の安定を図ることもでき
る。According to the induction heating cooker, the magnetic shield is
Since the magnetic shield is arranged on the side of the non-conductive member on which the induction heating coil is arranged, there is no restriction on the bottom body constituting the exterior body of the induction heating cooker. As a result, the degree of freedom in designing the exterior body is increased and the size can be reduced. In particular,
Since the magnetic shield is configured to be sandwiched between the support and the mounting piece and attached, the magnetic shield is prevented from falling down, and the magnetic shield is prevented from vibrating during operation. Can be attached to. Further, since the supporting portion has elasticity so as to press the magnetic shield plate downward, it is possible to stabilize the mounting state of the magnetic shield plate.
【０００７】前記誘導加熱調理器では、前記防磁板に前
記取付片を挿通する挿通部を設け、防磁板を位置決めす
ることが好ましい。In the induction heating cooker, it is preferable that the magnetic shield plate is provided with an insertion portion for inserting the attachment piece, and the magnetic shield plate is positioned.
【０００８】また、前記外装体の底体に防磁板の下面に
当接するリブを設け、該リブと前記支持部との間に防磁
板を挟持し、防磁板の振動を確実に防止することが好ま
しい。Further, the bottom of the exterior body is provided with a rib that comes into contact with the lower surface of the magnetic shield, and the magnetic shield is sandwiched between the rib and the supporting portion to reliably prevent vibration of the magnetic shield. preferable.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図面
に従って説明する。図１は本発明の誘導加熱調理器であ
る第１実施形態の炊飯器１を示す。この炊飯器１は、被
加熱物である内鍋２と、該内鍋２を収容する本体３と、
該本体３に回動可能に取り付けられる蓋体１９とからな
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a rice cooker 1 of a first embodiment which is an induction heating cooker of the present invention. The rice cooker 1 includes an inner pot 2 which is an object to be heated, and a main body 3 which houses the inner pot 2.
And a lid 19 rotatably attached to the main body 3.
【００１０】前記内鍋２は、熱伝導率が高いアルミ等か
らなる鍋母材の外面に、後述する誘導加熱コイル１１へ
の高周波電流の通電時に生じる電磁波によって渦電流を
発生して誘導加熱される強磁性材料を、コーティングや
接合等を施して設けたものである。The inner pot 2 is induction-heated by generating an eddy current by an electromagnetic wave generated when a high-frequency current is applied to an induction heating coil 11, which will be described later, on the outer surface of the pot base material made of aluminum or the like having a high thermal conductivity. The ferromagnetic material is provided by coating or bonding.
【００１１】前記本体３は、図１および図２に示すよう
に、胴体５と該胴体５の底を閉鎖する底体６とからなる
外装体４の内部に、前記内鍋２を収容する非導電性部材
である保護枠７を備えている。そして、この外装体４と
保護枠７の間には、加熱手段である誘導加熱コイル１１
と、フェライトコア１２と、防磁板１６と、内鍋用温度
センサ１８と、マイコンを実装した図示しない制御基板
とが配設されている。As shown in FIGS. 1 and 2, the main body 3 has a body 5 and a bottom body 6 that closes the bottom of the body 5 inside an exterior body 4 that does not house the inner pot 2. The protective frame 7 is provided as a conductive member. An induction heating coil 11 serving as heating means is provided between the exterior body 4 and the protective frame 7.
A ferrite core 12, a magnetic shield 16, an inner pot temperature sensor 18, and a control board (not shown) on which a microcomputer is mounted are arranged.
【００１２】前記保護枠７の底部および側部には、前記
フェライトコア１２の取付位置にネジ受部８ａ，８ｂが
１２０度間隔をあけて３個設けられている。また、この
保護枠７の側部には、内鍋用温度センサ１８を取り付け
るための取付枠９が設けられるとともに、この取付枠９
内に内鍋用温度センサ１８の検出部を貫通させる孔１０
（図２参照）が設けられている。Three screw receiving portions 8a and 8b are provided at the mounting position of the ferrite core 12 on the bottom portion and the side portion of the protective frame 7 at intervals of 120 degrees. Further, a mounting frame 9 for mounting the inner pan temperature sensor 18 is provided on the side portion of the protective frame 7, and the mounting frame 9 is also provided.
Hole 10 through which the detection part of the temperature sensor 18 for the inner pot penetrates
(See FIG. 2).
【００１３】また、本実施形態では、保護枠７の底に
は、防磁板１６の上面（図３では下面）を支持し、組付
状態の防磁板１６の振動を防止する支持部２５が設けら
れている。具体的には、この支持部２５は、誘導加熱コ
イル１１の内側端でかつ後述する取付片１５の係止部１
５ａの先端近傍から突出する縦片２５ａと、該縦片２５
ａの端部より半径方向外向きに突出する横片２５ｂと、
該横片２５ｂの先端から係止部１５ａの側に突出する押
圧片２５ｃとからなり、弾性を有する肉厚で形成されて
いる。この押圧片２５ｃは、取付片１５内まで延びると
ともに係止部１５ａに近接するように傾斜されている。Further, in this embodiment, a support portion 25 is provided on the bottom of the protective frame 7 to support the upper surface (lower surface in FIG. 3) of the magnetic shield 16 and prevent vibration of the assembled magnetic shield 16. Has been. Specifically, the supporting portion 25 is the inner end of the induction heating coil 11 and the locking portion 1 of the mounting piece 15 described later.
Vertical piece 25a protruding from the vicinity of the tip of 5a, and the vertical piece 25a
a lateral piece 25b protruding outward in the radial direction from the end of a,
It is composed of a pressing piece 25c protruding from the tip of the horizontal piece 25b to the side of the locking portion 15a, and is formed to have elastic thickness. The pressing piece 25c extends into the mounting piece 15 and is inclined so as to be close to the locking portion 15a.
【００１４】前記誘導加熱コイル１１は、高周波電流が
通電されることにより電磁波を発生し、前記保護枠７を
介して内鍋２を電磁誘導加熱するものである。この誘導
加熱コイル１１は、前記保護枠７の下面に配設され、後
述するフェライトコア１２のホルダ１３によって該ホル
ダ１３と保護枠７との間に位置決めされる。The induction heating coil 11 generates an electromagnetic wave when a high-frequency current is applied to the induction heating coil 11 to electromagnetically heat the inner pot 2 through the protective frame 7. The induction heating coil 11 is disposed on the lower surface of the protection frame 7, and is positioned between the holder 13 and the protection frame 7 by a holder 13 of a ferrite core 12 described later.
【００１５】前記フェライトコア１２は、前記保護枠７
の外面形状に沿った略Ｊ字形棒状をなし、前記誘導加熱
コイル１１から発生する電磁波を集中的に集めて内鍋２
を局部加熱するものである。このフェライトコア１２
は、非導電性材料（合成樹脂）からなるホルダ１３内に
インサート成型され、このホルダ１３によって前記誘導
加熱コイル１１の下方に１２０度間隔をあけて放射状に
配設される。前記ホルダ１３の両端には、それぞれ保護
枠７に固定するためのブラケット１４ａ，１４ｂが設け
られている。また、本実施形態では、後述する防磁板１
６の取付構造として、前記防磁板１６の下面に係止する
係止部１５ａを備えた略Ｌ字形状の取付片１５がそれぞ
れに設けられている。The ferrite core 12 has the protective frame 7
It has a substantially J-shaped rod shape that conforms to the outer surface of the inner pot 2 and concentrates electromagnetic waves generated from the induction heating coil 11 into the inner pot 2
Is locally heated. This ferrite core 12
Are insert-molded in a holder 13 made of a non-conductive material (synthetic resin), and are radially arranged below the induction heating coil 11 by the holder 13 at intervals of 120 degrees. Brackets 14a and 14b for fixing to the protective frame 7 are provided at both ends of the holder 13, respectively. In addition, in the present embodiment, a magnetic shield 1 described later is provided.
As a mounting structure of No. 6, a substantially L-shaped mounting piece 15 having a locking portion 15a that locks on the lower surface of the magnetic shield 16 is provided on each.
【００１６】前記防磁板１６は、前記誘導加熱コイル１
１より発生する電磁波を内鍋２側に反射し、底体６を通
過して外部に漏れないようにするものである。この防磁
板１６は、例えば、円環形状のアルミニウム板からな
り、その内周縁には前記ホルダ１３の取付片１５を挿通
する挿通部１７（図２参照）が設けられている。なお、
この防磁板１６の形状は円環形状に限られず、種々の変
更が可能である。また、その形成材料もアルミニウム板
に限られず、導電性または非磁性を有する金属材料であ
ればよい。The magnetic shield 16 is the induction heating coil 1
The electromagnetic wave generated from the electromagnetic wave generator 1 is reflected to the inner pan 2 side so as not to leak through the bottom body 6 to the outside. The magnetic shield 16 is made of, for example, an annular aluminum plate, and an insertion portion 17 (see FIG. 2) through which the attachment piece 15 of the holder 13 is inserted is provided on the inner peripheral edge thereof. In addition,
The shape of the magnetic shield 16 is not limited to the annular shape, and various modifications are possible. Further, the forming material is not limited to the aluminum plate, and may be any metal material having conductivity or non-magnetism.
【００１７】前記内鍋用温度センサ１８は、前記保護枠
７の取付枠９に配設され、その先端の検出部を孔１０を
貫通させて内鍋２の側面に接触させ、該内鍋２の温度を
検出してマイコンに出力するものである。The inner pan temperature sensor 18 is disposed on the mounting frame 9 of the protective frame 7, and the detection portion at the tip thereof is passed through the hole 10 to make contact with the side surface of the inner pan 2. The temperature is detected and output to the microcomputer.
【００１８】前記蓋体１９は上板と下板からなり、その
下板の底面に配設した内蓋によって前記内鍋２の上端開
口を密閉するものである。本実施形態では、この蓋体１
９には、図示しない操作パネルのスイッチを操作するこ
とにより、その操作状況を表示するための液晶表示２０
が配設されている。具体的には、この液晶表示２０は、
蓋体１９の上板に設けた凹部１９ａ内に配設した後、粘
着テープ２１によって固定され、専用の液晶表示ホルダ
の削減、および、それに伴う占有スペースの削減を図っ
ている。The lid 19 is composed of an upper plate and a lower plate, and the upper end opening of the inner pot 2 is closed by an inner lid provided on the bottom surface of the lower plate. In the present embodiment, this lid 1
9 is a liquid crystal display 20 for displaying the operation status by operating a switch on an operation panel (not shown).
Is provided. Specifically, this liquid crystal display 20 is
After being arranged in the recess 19a provided in the upper plate of the lid body 19, the lid 19 is fixed by the adhesive tape 21 to reduce the number of dedicated liquid crystal display holders and the space occupied thereby.
【００１９】前記構成の炊飯器１の本体３を組み立てる
場合には、例えば、前記保護枠７を組み付けた外装体４
の胴体５を上下逆向きとして底を上向きに開口させる。
そして、その上方より、図２に示すように、円環状に巻
回した誘導加熱コイル１１を配置する。When assembling the main body 3 of the rice cooker 1 having the above-mentioned configuration, for example, the exterior body 4 to which the protection frame 7 is assembled is attached.
The body 5 is turned upside down and the bottom is opened upward.
Then, from above, as shown in FIG. 2, the induction heating coil 11 wound in an annular shape is arranged.
【００２０】ついで、３個のフェライトコア１２を取付
位置に配置し、ネジをそれぞれのホルダ１３のブラケッ
ト１４ａ，１４ｂを貫通させて保護枠７のネジ受部８
ａ，８ｂに締め付け、各フェライトコア１２を固定す
る。これにより、前記誘導加熱コイル１１は、保護枠７
とフェライトコア１２のホルダ１３との間に挟まれて位
置決めされる。Next, the three ferrite cores 12 are arranged at the mounting positions, and the screws are passed through the brackets 14a and 14b of the respective holders 13 so that the screw receiving portion 8 of the protective frame 7 is provided.
The ferrite cores 12 are fixed by tightening to a and 8b. As a result, the induction heating coil 11 has the protective frame 7
And the holder 13 of the ferrite core 12 are sandwiched and positioned.
【００２１】次に、防磁板１６を上方より配置し、その
挿通部１７内に前記フェライトコア１２のホルダ１３よ
り突出する取付片１５を挿通させる。その後、図３に示
すように、防磁板１６をＸ方向に回動させる。Next, the magnetic shield 16 is arranged from above, and the attachment piece 15 projecting from the holder 13 of the ferrite core 12 is inserted into the insertion portion 17 thereof. Then, as shown in FIG. 3, the magnetic shield 16 is rotated in the X direction.
【００２２】これにより、上側である防磁板１６の下面
に前記取付片１５の係止部１５ａを係止するとともに、
下側である防磁板の上面に支持部２５の押圧片２５ｃが
圧接し、これら支持部２５の押圧片２５ｃと取付片１５
の係止部１５ａとの間に防磁板１６が挟持される。As a result, the engaging portion 15a of the mounting piece 15 is engaged with the lower surface of the upper magnetic shield 16, and
The pressing piece 25c of the supporting portion 25 is pressed against the upper surface of the lower magnetic shield plate, and the pressing piece 25c of the supporting portion 25 and the mounting piece 15
The magnetic shield 16 is sandwiched between the locking portion 15a and the locking portion 15a.
【００２３】そして、前記胴体５側に全ての構成部品を
組み付けた状態で、底体６を上方より配置し、該底体６
の開口縁と胴体５の開口縁とを互いに嵌合させることに
より、本体３の組み立てが完了する。Then, the bottom body 6 is arranged from above with all the constituent parts assembled to the body 5 side, and the bottom body 6 is placed.
The assembly of the main body 3 is completed by fitting the opening edge of and the opening edge of the body 5 to each other.
【００２４】このように、本発明の炊飯器１では、防磁
板１６を保護枠７の側に取り付けるため、外装体４を構
成する底体６には防磁板１６を取り付けるための取付構
造を形成する必要はない。そのため、底体６は勿論、外
装体４全体をデザインする際に設計の自由度が高くな
り、小型化を図ることも可能になる。As described above, in the rice cooker 1 of the present invention, since the magnetic shield 16 is attached to the side of the protective frame 7, a mounting structure for attaching the magnetic shield 16 is formed on the bottom body 6 which constitutes the exterior body 4. do not have to. Therefore, not only the bottom body 6 but also the entire exterior body 4 can be designed with a high degree of freedom in designing, and the size can be reduced.
【００２５】また、組み立てが完了して本体３の上下を
正規の方向に配置すると、防磁板１６が脱落することを
確実に防止できる。さらに、弾性を有する支持部２５
は、炊飯器１を動作させた際に生じる振動を吸収する防
振機構の役割をなす。そのため、防磁板１６が振動する
ことによる異音の発生や、脱落を確実に防止できる。When the upper and lower sides of the main body 3 are arranged in the proper direction after the assembly is completed, the magnetic shield 16 can be reliably prevented from falling off. Further, the elastic support portion 25
Serves as an anti-vibration mechanism that absorbs vibration generated when the rice cooker 1 is operated. Therefore, it is possible to reliably prevent generation of abnormal noise and dropout due to the vibration of the magnetic shield 16.
【００２６】図４は第２実施形態の炊飯器１を示す。こ
の第２実施形態では、防磁板１６の取付構造として、フ
ェライトコア１２のホルダ１３に防磁板１６の上面に当
接して支持する支持部３０を設けるとともに、外装体４
を構成する底体６に防磁板１６の下面に当接して支持す
る円環状のリブ３１を設けた点でのみ第１実施形態と相
違している。FIG. 4 shows the rice cooker 1 of the second embodiment. In the second embodiment, as the mounting structure of the magnetic shield 16, the holder 13 of the ferrite core 12 is provided with the support portion 30 that abuts and supports the upper surface of the magnetic shield 16, and the exterior body 4 is provided.
It differs from the first embodiment only in that an annular rib 31 that abuts against the lower surface of the magnetic shield 16 and supports it is provided on the bottom body 6 constituting the above.
【００２７】この第２実施形態では、第１実施形態と同
様に、保護枠７を取り付けた胴体５の底を上向きに開口
した状態で、誘導加熱コイル１１、フェライトコア１２
を組み付けた後、取付片１５によって防磁板１６を取り
付ける。これにより、前記防磁板１６は、フェライトコ
ア１２のホルダ１３に設けた支持部３０上に載置された
状態になり、この状態で、底体６を胴体５に組み付け
る。In the second embodiment, similarly to the first embodiment, the induction heating coil 11 and the ferrite core 12 are opened with the bottom of the body 5 having the protective frame 7 open upward.
After assembling, the magnetic shield 16 is attached by the attachment piece 15. As a result, the magnetic shield 16 is placed on the support portion 30 provided on the holder 13 of the ferrite core 12, and in this state, the bottom body 6 is assembled to the body 5.
【００２８】これにより、前記防磁板１６は、ホルダ１
３の支持部３０と底体６のリブ３１により若干の圧力で
挟持される。その結果、前記第１実施形態と同様に、こ
の組付状態で防磁板１６の振動を防止し、確実に取付状
態を維持できる。As a result, the magnetic shield 16 is attached to the holder 1
It is sandwiched by the support portion 30 of No. 3 and the rib 31 of the bottom body 6 with a slight pressure. As a result, like the first embodiment, vibration of the magnetic shield 16 can be prevented in this assembled state, and the attached state can be reliably maintained.
【００２９】なお、本発明は前記実施形態の構成に限定
されるものではない。例えば、前記各実施形態では、取
付片１５をフェライトコア１２のホルダ１３に設けた
が、防磁板１６の取付構造として、図５に示すように取
付片２３を保護枠７に設け、防磁板１６には挿通部１７
を設けない構成としてもよい。ここで、この図では、支
持部２５，３０の構成は省略している。The present invention is not limited to the configuration of the above embodiment. For example, in each of the above-described embodiments, the mounting piece 15 is provided on the holder 13 of the ferrite core 12, but as the mounting structure of the magnetic shield plate 16, the mounting piece 23 is provided on the protective frame 7 as shown in FIG. The insertion part 17
The configuration may be omitted. Here, in this figure, the configurations of the support portions 25 and 30 are omitted.
【００３０】具体的には、前記取付片２３は、保護枠７
において誘導加熱コイル１１の外側端近傍より１２０度
間隔をもって３個突設されている。この取付片２３は、
その突端を中心に向けて突出し、第１実施形態と同様に
防磁板１６の下面を係止する係止部２３ａを備えてい
る。Specifically, the mounting piece 23 is a protective frame 7.
In FIG. 3, three induction heating coils 11 are provided so as to protrude from the vicinity of the outer end thereof at intervals of 120 degrees. This mounting piece 23
An engaging portion 23a is provided which protrudes toward the center of the projecting end and engages the lower surface of the magnetic shield 16 as in the first embodiment.
【００３１】この構成では、各取付片２３を外向きに撓
ませて防磁板１６を組み付けることにより、各取付片２
３の係止部２３ａで防磁板１６を外側より係止する。そ
のため、第１実施形態と同様に、外装体４のデザインの
自由度を高めることができるとともに、小型化を図るこ
とができるうえ、防磁板１６の脱落を確実に防止するこ
とができる。In this structure, each mounting piece 2 is bent by bending each mounting piece 23 outwardly and assembling the magnetic shield 16.
The magnetic shield 16 is locked from the outside by the locking portion 23 a of No. 3. Therefore, similarly to the first embodiment, the degree of freedom in designing the outer casing 4 can be increased, the size can be reduced, and the magnetic shield 16 can be reliably prevented from falling off.
【００３２】また、第１実施形態では、取付片１５を防
磁板１６の下面に挿通部１７を通して係止するようにし
たが、その係止部１５ａを防磁板１６の内側縁より外向
きに突出するように形成し、前記変形例と同様に、防磁
板１６に挿通部１７を設けない構成とすることができ
る。Further, in the first embodiment, the mounting piece 15 is locked to the lower surface of the magnetic shield 16 through the insertion portion 17, but the locking portion 15a projects outward from the inner edge of the magnetic shield 16. The magnetic-shielding plate 16 may not be provided with the insertion portion 17 as in the modification.
【００３３】また、第１実施形態では、支持部２５を保
護枠７に一体成形した構成を図示したが、この支持部２
５を別体として成形し、前記保護枠７またはフェライト
コア１２のホルダ１３に一体に組み付けるようにしても
よい。同様に、取付片１５，２３も別体として成形し、
前記保護枠７またはフェライトコア１２のホルダ１３に
一体に組み付けるようにしてもよい。Further, in the first embodiment, the structure in which the supporting portion 25 is integrally formed with the protective frame 7 is shown, but this supporting portion 2
5 may be molded as a separate body and integrally assembled with the holder 13 of the protective frame 7 or the ferrite core 12. Similarly, the mounting pieces 15 and 23 are molded separately,
The protective frame 7 or the ferrite core 12 may be integrally assembled with the holder 13.
【００３４】このように、本発明は種々の変更が可能で
あり、防磁板１６を保護枠７側（胴体５側）に配置した
状態で、底体６を組み付ける構成であればよい。As described above, the present invention can be variously modified, and the bottom body 6 may be assembled while the magnetic shield 16 is disposed on the protective frame 7 side (body 5 side).
【００３５】また、前記実施形態では、誘導加熱調理器
として炊飯器１を適用したが、電磁調理器等、誘導加熱
方式によって被加熱物を誘導加熱する調理器であれば適
用可能である。Further, in the above embodiment, the rice cooker 1 is applied as an induction heating cooker, but it is also applicable as long as it is an induction cooker or the like that induction heats an object to be heated by an induction heating system.
【００３６】[0036]
【発明の効果】以上の説明から明らかなように、本発明
の誘導加熱調理器は、誘導加熱コイルを配設した非導電
部材側に防磁板を配置するため、外装体を構成する底体
に防磁板を取り付けるための取付構造を設ける必要がな
い。その結果、底体の制約が無くなるため、該底体は勿
論、外装体全体のデザインの自由度が高くなり、小型化
も可能になる。As is apparent from the above description, in the induction heating cooker of the present invention, the magnetic shield is arranged on the non-conductive member side on which the induction heating coil is arranged, so that the bottom body constituting the outer casing is provided. There is no need to provide a mounting structure for mounting the magnetic shield. As a result, since there is no restriction on the bottom body, not only the bottom body but also the entire exterior body has a high degree of freedom in design, and the size can be reduced.
【００３７】また、防磁板の取付構造として、前記非導
電性部材またはホルダに、前記防磁板の下面に係止する
係止部を備えた取付片を設け、かつ、前記防磁板の上面
を支持する支持部を設け、これら取付片と支持部により
防磁板を挟持して取り付ける構成としているため、防磁
板が振動することを防止できる。このように防磁板の振
動を防止できる構造とすることにより、それに伴う異音
の発生や、防磁板の脱落を確実に防止できる。さらに前
記支持部は、前記防磁板を下向きに押圧するように弾性
を有しているため、防磁板の取付状態の安定を図ること
もできる。Further, as a structure for mounting the magnetic shield, a mounting piece having a locking portion for locking the lower surface of the magnetic shield is provided on the non-conductive member or the holder, and the upper surface of the magnetic shield is supported. Since the supporting portion is provided and the magnetic shield plate is sandwiched and mounted by the mounting piece and the supporting portion, it is possible to prevent the magnetic shield plate from vibrating. With such a structure that can prevent the vibration of the magnetic shield, it is possible to reliably prevent the generation of abnormal noise and the falling of the magnetic shield. Further, since the support portion has elasticity so as to press the magnetic shield plate downward, it is possible to stabilize the mounting state of the magnetic shield plate.
【図１】 本発明の誘導加熱調理器である第１実施形態
の炊飯器の概略断面図である。FIG. 1 is a schematic cross-sectional view of a rice cooker of a first embodiment which is an induction heating cooker of the present invention.
【図２】 図１の要部分解斜視図である。FIG. 2 is an exploded perspective view of a main part of FIG.
【図３】 図２の組立状態を示す斜視図である。FIG. 3 is a perspective view showing an assembled state of FIG.
【図４】 第２実施形態の炊飯器の概略断面図である。FIG. 4 is a schematic sectional view of a rice cooker according to a second embodiment.
【図５】 炊飯器の変形例を示す要部分解斜視図であ
る。FIG. 5 is an exploded perspective view of essential parts showing a modified example of the rice cooker.
１…炊飯器（誘導加熱調理器）、２…内鍋（被加熱
物）、３…本体、４…外装体、５…胴体、６…底体、７
…保護枠（非導電性部材）、１１…誘導加熱コイル、１
２…フェライトコア、１３…ホルダ、１５，２３…取付
片、１５ａ，２３ａ…係止部、１６…防磁板、１７…挿
通部、２５，３０…支持部。1 ... Rice cooker (induction heating cooker), 2 ... Inner pot (object to be heated), 3 ... Main body, 4 ... Exterior body, 5 ... Body, 6 ... Bottom body, 7
... Protective frame (non-conductive member), 11 ... Induction heating coil, 1
2 ... Ferrite core, 13 ... Holder, 15, 23 ... Attachment piece, 15a, 23a ... Locking part, 16 ... Magnetic shield plate, 17 ... Insertion part, 25, 30 ... Support part.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−246156（ＪＰ，Ａ) 特開 平11−56598（ＪＰ，Ａ) 特開 平４−17812（ＪＰ，Ａ) 実開 平５−13319（ＪＰ，Ｕ) 実開 昭56−111911（ＪＰ，Ｕ) 実公 昭58−47668（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) A47J 27/00 103 A47J 27/00 104 H05B 6/12 319 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-246156 (JP, A) JP-A-11-56598 (JP, A) JP-A-4-17812 (JP, A) Actual Kaihei 5- 13319 (JP, U) Actual development 56-111911 (JP, U) Actual public 58-47668 (JP, Y2) (58) Fields investigated (Int.Cl. 7 , DB name) A47J 27/00 103 A47J 27/00 104 H05B 6/12 319
Claims (3)
非導電性部材を介して被加熱物を誘導加熱する誘導加熱
コイルと、該誘導加熱コイルの下方に配設され非導電性
材料からなるホルダによって保持された複数のフェライ
トコアと、該フェライトコアの下方に配置される防磁板
とを備えた誘導加熱調理器において、 前記非導電性部材またはホルダに、前記防磁板の下面に
係止する係止部を備えた取付片を設けるとともに、 前記非導電性部材またはホルダに、前記防磁板の上面を
下向きに押圧して支持する弾性を有する支持部を設け、 前記防磁板を、前記支持部と前記取付片との間に挟持し
て取り付けるようにしたことを特徴とする誘導加熱調理
器。1. Inside an exterior body composed of a body and a bottom body,
An induction heating coil that induction-heats an object to be heated via a non-conductive member, a plurality of ferrite cores arranged below the induction heating coil and held by a holder made of a non-conductive material, and the ferrite core In an induction heating cooker provided with a magnetic shield plate disposed below, the non-conductive member or holder is provided with a mounting piece having a locking portion that locks to a lower surface of the magnetic shield plate, and the non-conductive member is provided. The elastic member or the holder is provided with an elastic support portion that presses and supports the upper surface of the magnetic shield plate downward, and the magnetic shield plate is attached by being sandwiched between the support portion and the mounting piece. An induction heating cooker characterized by the following.
部を設けたことを特徴とする請求項１に記載の誘導加熱
調理器。2. The induction heating cooker according to claim 1, wherein the magnetic shield plate is provided with an insertion portion through which the attachment piece is inserted.
するリブを設けたことを特徴とする請求項１または請求
項２に記載の誘導加熱調理器。3. The induction heating cooker according to claim 1, wherein a rib that abuts a lower surface of the magnetic shield is provided on the bottom body of the exterior body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000008941A JP3405949B2 (en) | 2000-01-18 | 2000-01-18 | Induction heating cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000008941A JP3405949B2 (en) | 2000-01-18 | 2000-01-18 | Induction heating cooker |
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| JP3405949B2 true JP3405949B2 (en) | 2003-05-12 |
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| JP4963274B2 (en) * | 2007-07-17 | 2012-06-27 | 象印マホービン株式会社 | Induction heating cooker |
| CN103919446A (en) * | 2013-01-16 | 2014-07-16 | 茅兴娟 | Environment-friendly stir pan |
| CN109121241B (en) * | 2018-08-31 | 2024-11-26 | 珠海格力电器股份有限公司 | An electromagnetic heating structure |
| CN112719858B (en) * | 2020-12-18 | 2021-11-23 | 铜陵兢强电子科技股份有限公司 | Ball cauldron coil panel assembly structure |
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