JPH05317176A - Electromagnetic cooking apparatus - Google Patents

Electromagnetic cooking apparatus

Info

Publication number
JPH05317176A
JPH05317176A JP4133292A JP13329292A JPH05317176A JP H05317176 A JPH05317176 A JP H05317176A JP 4133292 A JP4133292 A JP 4133292A JP 13329292 A JP13329292 A JP 13329292A JP H05317176 A JPH05317176 A JP H05317176A
Authority
JP
Japan
Prior art keywords
ferrite
coil holder
coil
resin
die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4133292A
Other languages
Japanese (ja)
Inventor
Toshio Nakajima
寿夫 中島
Norio Ishii
寛夫 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Home Appliance Co Ltd, Mitsubishi Electric Corp filed Critical Mitsubishi Electric Home Appliance Co Ltd
Priority to JP4133292A priority Critical patent/JPH05317176A/en
Publication of JPH05317176A publication Critical patent/JPH05317176A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To achieve a reduction in the manhour of assembling with the elimination of a bonding process and higher yield with the reinforcing of brittle ferrite by burying the ferrite into a coil holding body to mold integral. CONSTITUTION:Numerous pieces of sintered ferrite 10 having anti-slippage pieces 10c formed thereon and a die for molding is produced for a synthetic resin molding machine to match the shape of a coil holding body 9. After eight pieces of ferrite 10 are set radially on the die for injection molding, a resin melted as obtained by heating and pressurizing a powder of a high molecular resin such as PET is injected into the die. After the cooling, the coil holding body 9 having the ferrite 10 buried thereinto is resin molded and withdrawn from the die. A heating coil 7 is mounted with an adhesive 8 on an internal surface of the coil holding body 9 molded. The work thus obtained is incorporated into the main body 1 together with an external pot 4, a control substrate 15 and the like. There is little trouble in the breaking of the ferrite a caused under the pressurization during the bonding and there is no waste time as caused by the breakage of parts during the assembling.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、誘導加熱形の電気炊飯
器のような電磁調理器に係わり、さらに詳しくはフエラ
イトを備えて樹脂成形されたコイル保持体を有する電磁
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 electromagnetic cooker such as an induction heating type electric rice cooker, and more particularly to an electromagnetic cooker having a coil holder which is provided with a ferrite and is resin-molded. ..

【0002】[0002]

【従来の技術】図7は従来の炊飯器の側断面図、図8は
図7のコイル保持体の底面図、図9は図8の一部の拡大
断面面である。図7と図8において、1は炊飯器、2は
本体、3は蓋、4は外釜、5は鉄系の金属で作られた内
釜である。7は加熱コイル、8は接着剤、9は鍋底状の
コイル保持体、10は焼結材の複数のフェライトであ
る。フェライト10は図9に拡大して示されているよう
に、コイル保持体9の底面の同幅の浅い溝10a に挿入
して接着剤10b で接着され、加熱コイル7の通電で発
生した磁束の防磁作用を果たすためのものである。
7 is a side sectional view of a conventional rice cooker, FIG. 8 is a bottom view of the coil holder of FIG. 7, and FIG. 9 is an enlarged sectional view of a part of FIG. 7 and 8, 1 is a rice cooker, 2 is a main body, 3 is a lid, 4 is an outer pot, and 5 is an inner pot made of an iron-based metal. Reference numeral 7 is a heating coil, 8 is an adhesive, 9 is a pan-bottomed coil holder, and 10 is a plurality of ferrite sintered materials. As shown in the enlarged view of FIG. 9, the ferrite 10 is inserted into a shallow groove 10a of the same width on the bottom surface of the coil holder 9 and is adhered with an adhesive 10b. It is for performing a magnetic shield function.

【0003】このような構成の従来の炊飯器において、
研いだ米を内釜5に入れてから米のカップ数に見合った
量の水を入れる。そして、内釜5を炊飯器1の中に移し
てスイッチを入れると、加熱コイル7が通電して磁場が
形成される。形成された磁場の磁束が内釜5に鎖交し
て、内釜5が電磁誘導作用で発生した渦電流で発熱して
中の水が加熱される。そして、水が沸騰して、内釜5内
の米が炊飯される。コイル保持体9の底面のフェライト
10は、加熱コイル7の回りに形成された磁界内の磁束
の外部への漏洩を防止するようになっている。
In the conventional rice cooker having such a structure,
Put the sharpened rice in the inner kettle 5 and add water in an amount corresponding to the number of cups of rice. Then, when the inner pot 5 is moved into the rice cooker 1 and turned on, the heating coil 7 is energized to form a magnetic field. The magnetic flux of the formed magnetic field is linked to the inner pot 5, and the inner pot 5 is heated by the eddy current generated by the electromagnetic induction action to heat the water therein. Then, the water boils, and the rice in the inner pot 5 is cooked. The ferrite 10 on the bottom surface of the coil holder 9 prevents the leakage of the magnetic flux in the magnetic field formed around the heating coil 7 to the outside.

【0004】[0004]

【発明が解決しようとする課題】上述のように従来の炊
飯器では、複数のフェライト10が鍋底状のコイル保持
体9の底面に接着で固定されている。したがって、複数
のフェライト10を鍋底状の底面に沿って接着する作業
が繁雑で、組み立て工数が増加する傾向がある。組み立
て時間の短縮を優先させて接着工程を蔑ろにすると、固
定が不確実で使用中にフェライトが剥がれて修理に回さ
れ、ユーザの不評を買う恐れもある。また、本来的に脆
い焼結材のフェライト10を細く曲がって角棒状に成型
しているので、接着中溝に押し付けたときに壊れて無駄
にする等の問題点があった。
As described above, in the conventional rice cooker, the plurality of ferrites 10 are fixed to the bottom surface of the coil holder 9 having a pot bottom shape by adhesion. Therefore, the work of adhering the plurality of ferrites 10 along the bottom surface of the pot bottom is complicated, and the number of assembling steps tends to increase. If the bonding process is disproportionately prioritized to shorten the assembly time, the fixing is uncertain and the ferrite may be peeled off during use and sent for repair, which may lead to unfavorable user reviews. Further, since the ferrite 10 which is originally a brittle sintered material is bent in a thin shape and is formed into a square rod shape, there is a problem that it breaks and is wasted when pressed against the groove during bonding.

【0005】本発明は、このような従来の炊飯器の問題
点を解消するためになされたもので、面倒な接着工程を
無くして組み立て工数を減少し、脆いフェライトを壊し
て部品や作業時間を無駄にするようなことがなく歩留ま
りの良い電磁調理器を実現するようにしたものである。
The present invention has been made in order to solve the above problems of the conventional rice cooker. It eliminates a troublesome bonding process to reduce the number of assembling steps, and breaks brittle ferrite to reduce parts and work time. It is intended to realize an electromagnetic cooker with good yield without waste.

【0006】[0006]

【課題を解決するための手段】本発明は、フエライトを
備え樹脂成形されたコイル保持体と、コイル保持体に支
持され電磁誘導作用で調理用容器の内部に投入した調理
材料を加熱して調理する加熱コイルとを備えた電磁調理
器において、フェライトをコイル保持体の内部に埋め込
んで一体成形した電磁調理器を構成したものである。ま
た、フェライトに抜止片を形成してこの抜止片をコイル
保持体の底面に埋め込んで一体成形した電磁調理器を構
成したものである。
DISCLOSURE OF THE INVENTION According to the present invention, a coil holder provided with a ferrite and resin-molded, and a cooking material supported by the coil holder and charged into an inside of a cooking vessel by an electromagnetic induction effect are heated and cooked. In the electromagnetic cooker provided with the heating coil, the ferrite cooker is embedded in the coil holder to integrally form the electromagnetic cooker. In addition, the electromagnetic cooker is formed by forming a retaining piece on ferrite and embedding the retaining piece in the bottom surface of the coil holder.

【0007】さらに、フエライトを備え樹脂成形された
コイル保持体と、コイル保持体に支持され電磁誘導作用
で調理用容器の内部に投入した調理材料を加熱して調理
する加熱コイルとを備えた電磁調理器において、フェラ
イトを粉状及び又は粒状に形成してコイル保持体に混入
して一体成形した電磁調理器を構成したものである。
Further, an electromagnetic wave provided with a coil holder which is made of resin and has a ferrite, and a heating coil which is supported by the coil holder and heats and cooks the cooking material introduced into the cooking container by an electromagnetic induction action. In the cooking device, an electromagnetic cooking device in which ferrite is formed into powder and / or particles and is mixed into a coil holder to be integrally formed is configured.

【0008】[0008]

【作用】断面が角形でコイル保持体の断面形状に一致す
るように焼結されたフェライトが、合成樹脂成形機によ
り型を用いてコイル保持体の内部に放射状にインサート
されて樹脂成形される。インサートされたフェライト
は、回り中がコイル保持体の樹脂で覆われる。また、断
面が角形で側部に抜止片を設けコイル保持体の断面形状
に一致するように焼結されたフェライトが、コイル保持
体に放射状に一部を露出して埋め込まれて成型される。
また、この発明の別の実施例では、細かい粒状のフェラ
イトがコイル保持体に混入されて一体成形される。
The ferrite having a square cross section and being sintered so as to match the cross sectional shape of the coil holder is radially inserted into the coil holder by a synthetic resin molding machine using a mold and resin-molded. The inside of the inserted ferrite is covered with the resin of the coil holder. Further, ferrite having a rectangular cross-section and provided with a retaining piece on the side and sintered so as to match the cross-sectional shape of the coil holder is partially exposed radially in the coil holder and is molded.
Further, in another embodiment of the present invention, fine granular ferrite is mixed into the coil holder to be integrally molded.

【0009】[0009]

【実施例】【Example】

実施例1 図1は本発明実施例1の構成説明図、図2は図1のコイ
ル保持体の底面図、図3はフェライトの斜視図で、本発
明実施例の電磁調理器には誘導加熱形の電気炊飯器が例
示されている。
Embodiment 1 FIG. 1 is a structural explanatory view of Embodiment 1 of the present invention, FIG. 2 is a bottom view of the coil holder of FIG. 1, and FIG. 3 is a perspective view of ferrite. Shaped electric rice cooker is illustrated.

【0010】図1において、1は炊飯器である。2はケ
ースの本体、3は蓋である。蓋3は本体2にヒンジで支
持され、ヒンジを支点に回転して本体1の内部が開放さ
れる。4は本体1内に固定された外釜、5は内釜、6は
内蓋である。内釜5は例えば内外面に異種の金属を重合
させた二層構造のクラッド材が用いられ、外層側が透磁
率が高く電気抵抗の大きい鉄系の材料が用いられ、内側
には熱の伝導率の高いアルミニウム等が用いられてい
る。そして、内釜5は内外両層を密着させて熱的に結合
され、内面に水位線などを示す表示体が表示され表層面
にテフロン(商品名)のような非親和性物質の被覆層が
形成される。
In FIG. 1, 1 is a rice cooker. 2 is a case body, and 3 is a lid. The lid 3 is supported on the main body 2 by a hinge, and is rotated around the hinge as a fulcrum to open the inside of the main body 1. Reference numeral 4 is an outer pot fixed in the main body 1, 5 is an inner pot, and 6 is an inner lid. For the inner pot 5, for example, a clad material having a two-layer structure in which different kinds of metals are polymerized is used on the inner and outer surfaces, an iron-based material having a high magnetic permeability and a large electric resistance is used on the outer layer side, and a heat conductivity is used on the inner side. Aluminum, which has a high price, is used. The inner pot 5 is thermally bonded to the inner and outer layers by closely contacting each other, an indicator showing a water level line or the like is displayed on the inner surface, and a coating layer of a non-affinity substance such as Teflon (trade name) is provided on the surface layer. It is formed.

【0011】7は外釜の底面に配置された加熱コイル、
8は接着剤、9はコイル保持体、10はフェライトであ
る。コイル保持体9の底面とフェライト10の構造が、
図2と図3に示されている。コイル保持体9は炊飯器1
の形状に合わせて、水平方向の輪郭が四隅を丸めた四角
形に作られ、垂直方向の断面が図1に示すように浅い鍋
底状に成型されている。そして、鍋底状のコイル保持体
9の内面に位置決めされて、加熱コイル7が取付けられ
ている。
7 is a heating coil disposed on the bottom of the outer pot,
8 is an adhesive, 9 is a coil holder, and 10 is ferrite. The bottom of the coil holder 9 and the structure of the ferrite 10 are
It is shown in FIGS. 2 and 3. The coil holder 9 is the rice cooker 1
In accordance with the shape of, the horizontal contour is formed into a quadrangle with rounded four corners, and the vertical cross section is molded into a shallow pot bottom shape as shown in FIG. Then, the heating coil 7 is attached to the inner surface of the pan-shaped bottom coil holder 9.

【0012】また、フェライト10は加熱コイル7の外
部への磁束の漏洩を防止し、内釜5側に磁束を集中して
効果的に誘導加熱させるためのものである。図3に示さ
れているように、フェライト10は断面長方形で、一端
側が鍋底状のコイル保持体9と同一の円弧に形成されて
いる。また、他端の両側面に一対の抜止片10c が突設
されて、粉末から焼結工程を経て作られる。このように
作られた8本のフェライト10はコイル保持体9の外側
面に45度間隔を隔てて放射状に配置され、それぞれ抜
止片10c が埋め込まれて樹脂成形されている。コイル
保持体9に埋め込まれた各フェライト10は、一対の抜
止片10c によりコイル保持体9にしっかり結合して脱
落が防止される。
The ferrite 10 is for preventing leakage of the magnetic flux to the outside of the heating coil 7 and for concentrating the magnetic flux on the inner pot 5 side for effective induction heating. As shown in FIG. 3, the ferrite 10 has a rectangular cross section, and one end of the ferrite 10 is formed in the same circular arc as the pan-shaped coil holder 9. Also, a pair of retaining pieces 10c are provided on both side surfaces of the other end so as to project from the powder through a sintering process. The eight ferrites 10 thus formed are radially arranged on the outer surface of the coil holder 9 at intervals of 45 degrees, and the retaining pieces 10c are embedded in each of the ferrites 10 and molded with resin. Each ferrite 10 embedded in the coil holder 9 is firmly coupled to the coil holder 9 by a pair of retaining pieces 10c to prevent the ferrite 10 from falling off.

【0013】12は温度センサ、13は抗張力を与える
コイルバネである。温度センサ12はコイルバネ13に
より上向きのバネ圧が与えられて、内釜5の底面に常時
接触して炊飯温度を検出する。15は本体1の底部に設
けられたプリント板からなる制御基板、16は制御部で
ある。制御基板15には半導体等の電子部品が搭載さ
れ、制御部16は例えばCPUとタイマやメモリ機能を
有するマイコンで構成されている。
Reference numeral 12 is a temperature sensor, and 13 is a coil spring which gives tensile strength. An upward spring pressure is applied to the temperature sensor 12 by the coil spring 13, and the temperature sensor 12 constantly contacts the bottom surface of the inner pot 5 to detect the rice cooking temperature. Reference numeral 15 is a control board formed of a printed board provided on the bottom of the main body 1, and 16 is a control section. Electronic components such as semiconductors are mounted on the control board 15, and the control unit 16 is composed of, for example, a CPU and a microcomputer having a timer and a memory function.

【0014】このほか、本体1の底部にはコードリール
と、コードリールに巻かれた電源コード等が設けられて
いる。20は蓋3の上面に取付けられた操作部、21は
蒸気筒である。細かくは図示されていないが操作部20
の上面には、タッチキーや表示窓を備えた可撓性の操作
シートが設けられている。この操作部20内は密閉され
て、LEDや液晶表示器等の電子部品を取り付けた操作
基板が取り付けられている。Wは内釜5内の水、rは米
である。
In addition, a cord reel, a power cord wound around the cord reel, and the like are provided on the bottom of the main body 1. Reference numeral 20 is an operating portion attached to the upper surface of the lid 3, and 21 is a steam cylinder. Although not shown in detail, the operation unit 20
A flexible operation sheet including touch keys and a display window is provided on the upper surface of the. The inside of the operation unit 20 is hermetically sealed, and an operation board on which electronic components such as an LED and a liquid crystal display are attached is attached. W is water in the inner pot 5, and r is rice.

【0015】このような構成の本発明の電気炊飯器のコ
イル保持体9は、例えば次のようにして作られる。予
め、図3に示されたような抜止片10c を形成した多数
の焼結フェライト10と、コイル保持体9の形に見合わ
せた合成樹脂成形機の成型用の“型”が作られる。射出
成形用の“型”には8本のフェライト10が放射状にセ
ットされてから、PET等の高分子の樹脂粉末を加熱・
加圧して溶融状態になった樹脂が“型”内に注入され
る。冷却後、“型”の中から、図2に示されたようなフ
ェライト10を埋め込んだコイル保持体9が、樹脂成形
されて取り出される。
The coil holder 9 of the electric rice cooker of the present invention having such a structure is manufactured, for example, as follows. In advance, a large number of sintered ferrites 10 having retaining pieces 10c as shown in FIG. 3 and a "mold" for molding of a synthetic resin molding machine matching the shape of the coil holder 9 are prepared. Eight ferrites 10 are set radially on the “mold” for injection molding, and then polymer resin powder such as PET is heated.
The resin that has been molten under pressure is poured into a "mold". After cooling, the coil holder 9 in which the ferrite 10 as shown in FIG. 2 is embedded is resin-molded and taken out from the "mold".

【0016】“型”から取り出されたコイル保持体9の
一部の断面図が、図4に示されている。フェライト10
の抜止め片10c が樹脂からなるコイル保持体9の中に
埋没して、フェライト10がコイル保持体9に強固に固
定されている状態が示されている。成型されたコイル保
持体9の内面には、接着剤8により加熱コイル7が取り
付けられる。そして、外釜4や制御基板15等と共に、
本体1の内部に組み込まれる。その後、操作部20や蒸
気筒21を取付けた蓋3が本体1にヒンジで開閉可能に
連結され、図1に示されたような誘導加熱型の電気炊飯
器が組み立てられることになる。
A cross-sectional view of a portion of the coil holder 9 taken out of the "mold" is shown in FIG. Ferrite 10
The retaining piece 10c is embedded in the coil holder 9 made of resin, and the ferrite 10 is firmly fixed to the coil holder 9. The heating coil 7 is attached to the inner surface of the molded coil holder 9 with an adhesive 8. Then, together with the outer pot 4, the control board 15, etc.,
It is incorporated inside the main body 1. After that, the lid 3 to which the operating unit 20 and the steam cylinder 21 are attached is hingedly connected to the main body 1 to assemble the induction heating type electric rice cooker as shown in FIG.

【0017】ここで、研いだ米rと水wを入れてから、
炊飯器にセットして内蓋6を被せて蓋3を閉める。次
に、コードリールを引き出してプラグを100Vの電源
のコンセントに接続し、蓋3の上面の操作部20の表示
を見ながらタッチキーを操作して食事の時刻を予約設定
する。
Here, after adding the polished rice r and water w,
Set in a rice cooker, cover the inner lid 6 and close the lid 3. Next, the cord reel is pulled out, the plug is connected to a power outlet of 100 V, and the touch key is operated while watching the display of the operation unit 20 on the upper surface of the lid 3 to preset the meal time.

【0018】時間が経過して予約した食事の時刻に対応
する炊飯の開始時刻になると、制御部16のマイコンの
タイマが働いてスイッチが入り加熱コイル7が通電す
る。通電により加熱コイル7に20〜40KHZ程度の
励磁電流が流れて、発生した交番磁束が内釜5に鎖交し
て渦電流に基づくジュール熱が発生する。コイル保持体
9に抜止片10c を埋めて一体成形されたフェライト1
0は、底面側の漏洩磁束をなくして内部の内釜5に磁束
を集中させて効果的に加熱する。このような電磁誘導作
用によって内釜5に発生した熱が、内部の水wを急速に
加熱を始め同時に温度センサ12の温度の検出が開始す
る。
When the time comes to start the cooking of rice corresponding to the reserved meal time after the passage of time, the timer of the microcomputer of the control section 16 operates to turn on the switch and the heating coil 7 is energized. An excitation current of about 20 to 40 KHZ flows through the heating coil 7 by energization, and the generated alternating magnetic flux is linked to the inner pot 5 to generate Joule heat based on the eddy current. Ferrite 1 integrally formed by embedding retaining piece 10c in coil holder 9
In the case of 0, the leakage magnetic flux on the bottom side is eliminated and the magnetic flux is concentrated on the inner pot 5 for effective heating. The heat generated in the inner pot 5 by such an electromagnetic induction action rapidly starts heating the internal water w, and at the same time, the temperature sensor 12 starts to detect the temperature.

【0019】内釜5内の水wの加熱で炊飯が始まり、内
部の水wの温度が上昇して発生した蒸気が蒸気筒21か
ら大気に放出される。炊飯が進んで水wが沸騰し内釜5
内の水分が少なくなって温度が急激に上昇すると、温度
センサ12の検出信号を受けた制御部16により加熱コ
イル7の通電が自動的に停止されムラシ工程に移る。ム
ラシ工程が終って保温に移行し予約した時刻になって、
食べ頃の御飯がムラなく炊き上げられることになる。
The rice cooked by heating the water w in the inner pot 5, the temperature of the water w inside rises, and the generated steam is discharged from the steam cylinder 21 to the atmosphere. Cooking progresses, water w boils, and inner pot 5
When the amount of water in the inside decreases and the temperature rises sharply, the energization of the heating coil 7 is automatically stopped by the control unit 16 which receives the detection signal of the temperature sensor 12, and the unevenness process is started. After the Murashi process is over, the heat is transferred and the reserved time comes,
You will be able to cook the rice right before you eat it.

【0020】実施例2 図5は本発明の別の実施例の説明図である。図5の実施
例2では、前述の実施例1のようにフェライト10に
は、抜け止め片10c が設けられていない。その代わり
に、抜け止め片10c のないフェライト10の回り中が
図示のように、合成樹脂層9a によって覆われたコイル
保持体9が一体成形されている。この場合、図5の太い
線で示したようにフェライト10の回りを弾性体の薄層
で包囲して成型すれば、脆いフェライト10のショック
アブソーバとしての機能を果たすことができる。実施例
2の構成によれば、接着工程がなくフェライト10の形
状も単純で、しかも外力によるフェライト10の折損を
防止できる等の特長がある。
Embodiment 2 FIG. 5 is an explanatory view of another embodiment of the present invention. In Example 2 of FIG. 5, unlike the above-described Example 1, the ferrite 10 is not provided with the retaining piece 10c. Instead, as shown in the drawing, the coil holder 9 covered with the synthetic resin layer 9a is integrally formed around the ferrite 10 without the retaining pieces 10c. In this case, if the ferrite 10 is surrounded by a thin elastic layer as shown by the thick line in FIG. 5 and molded, the brittle ferrite 10 can function as a shock absorber. According to the structure of the second embodiment, there is no bonding step, the shape of the ferrite 10 is simple, and the ferrite 10 can be prevented from being broken by an external force.

【0021】図6に、本発明の実施例3の電気炊飯器が
示されている。実施例3の構成を示す図6と実施例1の
構成を示す図1との相違点は、コイル保持体の部分のみ
にある。図示されているように、実施例3では特別な形
状のフェライト10が設けられていない。そこで、実施
例3のコイル保持体には、特別に符号90が用いられて
いる。例えば、コイル保持体90は前述のようなプラス
チック射出成形機を用いた樹脂成形工程において、高分
子粉末の中に粉状及び又は粒状のフェライトが混入され
る。そして、この混合材料を用いて射出成形機により、
所定形状のコイル保持体90が成型される。このように
して成型されコイル保持体90の内部には渦電流による
損失が無視できるフェライト(点々で示されている)が
均一に分布して、実施例1,2に比較して製作し易く高
周波に対して優れた特性を備えた炊飯器が実現される。
FIG. 6 shows an electric rice cooker according to a third embodiment of the present invention. The difference between FIG. 6 showing the configuration of the third embodiment and FIG. 1 showing the configuration of the first embodiment is only in the portion of the coil holder. As shown in the drawing, in Example 3, the ferrite 10 having a special shape is not provided. Therefore, the reference numeral 90 is specially used for the coil holder of the third embodiment. For example, in the coil holder 90, powdery and / or granular ferrite is mixed in the polymer powder in the resin molding process using the plastic injection molding machine as described above. Then, using this mixed material, by an injection molding machine,
The coil holder 90 having a predetermined shape is molded. The ferrite (indicated by dots) in which the loss due to the eddy current is negligibly distributed inside the coil holder 90 molded in this way is easier to manufacture as compared with the first and second embodiments. A rice cooker with excellent characteristics is realized.

【0022】なお、上述の各実施例では炊飯器の内釜を
誘導加熱する鍋底状のコイル保持体の場合を例示して説
明したが、コイル保持体の形状は必ずしも鍋底状の必要
はなく、炊飯器以外のホットプレート等の別の誘導加熱
形の電磁調理器にも本発明を適用することができる。ま
た、実施例1ではフェライトに一対の抜止片を形成しコ
イル保持体に抜止片の部分を埋め込んだ場合で説明した
が、両側の抜止片はずらせてもよく、2つ以上に増やし
てもよい。
In each of the above-mentioned embodiments, the description has been given by exemplifying the case of the pan-bottomed coil holder for inductively heating the inner pot of the rice cooker, but the shape of the coil holder is not necessarily the pan-bottomed shape. The present invention can be applied to another induction heating type electromagnetic cooker such as a hot plate other than the rice cooker. Further, in the first embodiment, the case where the pair of retaining pieces is formed on the ferrite and the portions of the retaining pieces are embedded in the coil holder has been described, but the retaining pieces on both sides may be removed or the number may be increased to two or more. .

【0023】[0023]

【発明の効果】本発明は、フエライトを備え樹脂成形さ
れたコイル保持体と、コイル保持体に支持され電磁誘導
作用で調理用容器の内部に投入した調理材料を加熱して
調理する加熱コイルとを備えた電磁調理器において、フ
ェライトをコイル保持体の内部に埋め込んで一体成形し
た電磁調理器を構成した。また、フェライトに抜止片を
形成してこの抜止片をコイル保持体の底面に埋め込んで
一体成形した電磁調理器を構成した。
Industrial Applicability The present invention provides a resin-made coil holder provided with a ferrite, and a heating coil which is supported by the coil holder and which heats and cooks the cooking material charged into the cooking container by electromagnetic induction. In the electromagnetic cooker including the above, an electromagnetic cooker in which ferrite is embedded inside the coil holder is integrally formed. Further, a retaining piece is formed on the ferrite, and the retaining piece is embedded in the bottom surface of the coil holder to form an integral electromagnetic cooker.

【0024】さらに、フエライトを備え樹脂成形された
コイル保持体と、コイル保持体に支持され電磁誘導作用
で調理用容器の内部に投入した調理材料を加熱して調理
する加熱コイルとを備えた電磁調理器において、フェラ
イトを粉状及び又は粒状に形成してコイル保持体に混入
して一体成形した電磁調理器を構成した。
Further, an electromagnetic wave provided with a coil holder which is made of resin and has a ferrite and a heating coil which is supported by the coil holder and heats and cooks the cooking material charged into the cooking container by an electromagnetic induction action. In the cooker, ferrite was formed into powder and / or granules and mixed into the coil holder to integrally form an electromagnetic cooker.

【0025】この結果、本発明の全実施例によれば、従
来の電磁調理器の面倒な接着工程が省略されて工数が減
少できるばかりか、接着中の加圧でフェライトを折損す
る心配がない。特に、フェライトを合成樹脂で覆ったり
混入したりした実施例の1と3によれば、フェライトの
破損の事故が殆ど生じない。
As a result, according to all the embodiments of the present invention, not only the troublesome bonding process of the conventional electromagnetic cooker can be omitted and the number of steps can be reduced, but also there is no fear of breaking the ferrite by the pressure applied during bonding. . In particular, according to Examples 1 and 3 in which the ferrite is covered with or mixed with the synthetic resin, the accident of the ferrite damage hardly occurs.

【0026】よって、本発明によれば、作業工程が少く
なり、組立て中の部品の折損による無駄な時間もなくな
り、製作コストの安価な誘導加熱形の電磁調理器を提供
することができる。
Therefore, according to the present invention, it is possible to provide an induction heating type electromagnetic cooker in which the number of working steps is reduced, wasteful time due to breakage of parts during assembly is eliminated, and manufacturing cost is low.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明実施例1の構成説明図である。FIG. 1 is a configuration explanatory diagram of a first embodiment of the present invention.

【図2】図1のコイル保持体の底面図である。FIG. 2 is a bottom view of the coil holder of FIG.

【図3】フェライトの斜視図である。FIG. 3 is a perspective view of ferrite.

【図4】本発明実施例1の要部の拡大図である。FIG. 4 is an enlarged view of a main part of the first embodiment of the present invention.

【図5】本発明実施例2の要部の拡大図である。FIG. 5 is an enlarged view of a main part of the second embodiment of the present invention.

【図6】本発明実施例3の炊飯器の構成説明図である。[Fig. 6] Fig. 6 is a configuration explanatory view of a rice cooker of a third embodiment of the present invention.

【図7】従来の炊飯器の側断面図である。FIG. 7 is a side sectional view of a conventional rice cooker.

【図8】図7のコイル保持体の底面図である。FIG. 8 is a bottom view of the coil holder of FIG.

【図9】図8の一部の拡大断面面である。9 is an enlarged cross-sectional view of a part of FIG.

【符号の説明】[Explanation of symbols]

1 炊飯器 3 蓋 4 外釜 5 内釜 6 内蓋 7 加熱コイル 8 接着剤 9,90 コイル保持体 10 フェライト 10c 抜止片 12 温度センサ 13 コイルバネ 15 制御基板 16 制御部 20 操作部 W 水 r 米 1 Rice Cooker 3 Lid 4 Outer Kettle 5 Inner Kettle 6 Inner Lid 7 Heating Coil 8 Adhesive 9,90 Coil Holder 10 Ferrite 10c Detachment Piece 12 Temperature Sensor 13 Coil Spring 15 Control Board 16 Control Section 20 Operation Section W Water r Rice

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 フエライトを備え樹脂成形されたコイル
保持体と、該コイル保持体に支持され電磁誘導作用で調
理用容器の内部に投入した調理材料を加熱して調理する
加熱コイルとを備えた電磁調理器において、 前記フェライトをコイル保持体の内部に埋め込んで一体
成形したことを特徴とする電磁調理器。
1. A resin-made coil holder provided with ferrite, and a heating coil which is supported by the coil holder and heats and cooks the cooking material charged into the cooking container by electromagnetic induction. In an electromagnetic cooker, the ferrite is embedded in a coil holder to be integrally molded.
【請求項2】 フエライトを備え樹脂成形されたコイル
保持体と、該コイル保持体に支持され電磁誘導作用で調
理用容器の内部に投入した調理材料を加熱して調理する
加熱コイルとを備えた電磁調理器において、 前記フェライトに抜止片を形成して該抜止片をコイル保
持体に埋め込んで一部を露出して一体成形したことを特
徴とする電磁調理器。
2. A resin-formed coil holder provided with a ferrite, and a heating coil which is supported by the coil holder and heats and cooks the cooking material charged into the cooking container by electromagnetic induction. In the electromagnetic cooker, a retaining piece is formed on the ferrite, the retaining piece is embedded in a coil holder, and a part thereof is exposed to be integrally molded.
【請求項3】 フエライトを備え樹脂成形されたコイル
保持体と、該コイル保持体に支持され電磁誘導作用で調
理用容器の内部に投入した調理材料を加熱して調理する
加熱コイルとを備えた電磁調理器において、 前記フェライトを粉状及び又は粒状に形成して前記コイ
ル保持体に混入して一体成形したことを特徴とする電磁
調理器。
3. A resin-made coil holder provided with a ferrite, and a heating coil which is supported by the coil holder and heats and cooks the cooking material charged into the cooking container by electromagnetic induction. An electromagnetic cooker, characterized in that the ferrite is formed into powder and / or particles and is mixed into the coil holder to be integrally molded.
JP4133292A 1992-05-26 1992-05-26 Electromagnetic cooking apparatus Pending JPH05317176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4133292A JPH05317176A (en) 1992-05-26 1992-05-26 Electromagnetic cooking apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4133292A JPH05317176A (en) 1992-05-26 1992-05-26 Electromagnetic cooking apparatus

Publications (1)

Publication Number Publication Date
JPH05317176A true JPH05317176A (en) 1993-12-03

Family

ID=15101248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4133292A Pending JPH05317176A (en) 1992-05-26 1992-05-26 Electromagnetic cooking apparatus

Country Status (1)

Country Link
JP (1) JPH05317176A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004288477A (en) * 2003-03-24 2004-10-14 Tiger Vacuum Bottle Co Ltd Induction heating cooking device
EP1560462A3 (en) * 2003-11-06 2007-10-24 BSH Bosch und Siemens Hausgeräte GmbH inductor with coil-carying member
JP2009082262A (en) * 2007-09-28 2009-04-23 Hitachi Appliances Inc Rice cooker and warmer
ES2369614A1 (en) * 2009-06-30 2011-12-02 Bsh Electrodomesticos España S.A. Arrangement for inductor of induction field for heat generating cooking appliance, has magnetic base network element and carrier for magnetic base network element
JP2015188653A (en) * 2014-03-28 2015-11-02 三菱電機株式会社 rice cooker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004288477A (en) * 2003-03-24 2004-10-14 Tiger Vacuum Bottle Co Ltd Induction heating cooking device
EP1560462A3 (en) * 2003-11-06 2007-10-24 BSH Bosch und Siemens Hausgeräte GmbH inductor with coil-carying member
JP2009082262A (en) * 2007-09-28 2009-04-23 Hitachi Appliances Inc Rice cooker and warmer
ES2369614A1 (en) * 2009-06-30 2011-12-02 Bsh Electrodomesticos España S.A. Arrangement for inductor of induction field for heat generating cooking appliance, has magnetic base network element and carrier for magnetic base network element
JP2015188653A (en) * 2014-03-28 2015-11-02 三菱電機株式会社 rice cooker

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