JP2000048944A - Induction heating device - Google Patents
Induction heating deviceInfo
- Publication number
- JP2000048944A JP2000048944A JP21224698A JP21224698A JP2000048944A JP 2000048944 A JP2000048944 A JP 2000048944A JP 21224698 A JP21224698 A JP 21224698A JP 21224698 A JP21224698 A JP 21224698A JP 2000048944 A JP2000048944 A JP 2000048944A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- heating
- heating element
- power supply
- belt
- 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
Links
Landscapes
- Electric Stoves And Ranges (AREA)
- General Induction Heating (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は誘導加熱装置に関
し、特に食品等の被加熱物を加熱調理する加熱調理装置
などに好適な誘導加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating apparatus, and more particularly to an induction heating apparatus suitable for a heating cooking apparatus for heating and cooking an object to be heated such as food.
【0002】[0002]
【従来の技術】従来、誘導加熱を利用した加熱調理装置
として最も広く使用されているのは、平板状のプレート
直下にコイルを配設し、プレート上に載置した鍋を誘導
加熱して鍋内の食物を調理する電磁調理器である。電磁
調理器では、プレートはそれ自体が誘導加熱の負荷とな
らず且つ耐熱性を有するように、例えばセラミックなど
の絶縁体から成形されたものが使用されている。2. Description of the Related Art Conventionally, the most widely used heating cooking apparatus utilizing induction heating is to dispose a coil directly below a flat plate and to heat the pot placed on the plate by induction heating. It is an electromagnetic cooker that cooks food inside. In the electromagnetic cooker, a plate formed of an insulator such as a ceramic is used so that the plate itself does not become a load for induction heating and has heat resistance.
【0003】[0003]
【発明が解決しようとする課題】このような誘導加熱装
置では、コイルには10kHz〜数十kHz程度の周波
数を有する高周波電流が流される。こうした高周波電流
を供給する電源部では更にその高次の周波数成分が発生
し、コイルがアンテナの役目を果たして、そうした高周
波成分を含む電磁波が周囲に放射される。In such an induction heating device, a high-frequency current having a frequency of about 10 kHz to several tens of kHz flows through the coil. In the power supply unit that supplies such a high-frequency current, a higher-order frequency component is further generated, and the coil functions as an antenna, and an electromagnetic wave containing such a high-frequency component is radiated to the surroundings.
【0004】一般に、電気機器や電子機器では適当な遮
蔽を行うことにより上述のような外部への電磁波の漏洩
を抑制する対策を採ることが多いが、誘導加熱装置では
誘導加熱のための磁力線の発生源が電磁波放射源でもあ
るため、不所望の電磁波の遮蔽が困難であった。本発明
はこのような点に鑑みて成されたものであり、主たる目
的とするところは、外部への高周波電磁波の漏洩を防止
するのに有効な誘導加熱装置を提供することにある。[0004] In general, in electric and electronic equipment, measures are often taken to suppress the leakage of electromagnetic waves to the outside by providing appropriate shielding as described above. Since the source is also an electromagnetic wave radiation source, it has been difficult to shield unwanted electromagnetic waves. The present invention has been made in view of such a point, and a main object of the present invention is to provide an induction heating device that is effective for preventing leakage of high-frequency electromagnetic waves to the outside.
【0005】[0005]
【課題を解決するための手段、発明の実施の形態及び発
明の効果】上記課題を解決するために成された本発明に
係る誘導加熱装置は、 a)コイルと、 b)該コイルに高周波電力を供給する電力供給手段と、 c)前記コイルにより誘導加熱される発熱体と、 d)該発熱体と前記コイルとの間に配設され、該コイルに
て発生する磁束の通過を実質的に妨げないような、金属
性材料から成る遮蔽部材と、 を備えることを特徴としている。Means for Solving the Problems, Embodiments of the Invention, and Effects of the Invention The induction heating apparatus according to the present invention, which has been made to solve the above problems, comprises: a) a coil; C) a heating element that is induction-heated by the coil; d) a heating element that is disposed between the heating element and the coil to substantially prevent the passage of magnetic flux generated by the coil. And a shielding member made of a metallic material so as not to obstruct it.
【0006】遮蔽部材としては、例えば開口を有さない
0.1mm程度の肉薄の金属板、小孔を適当な開口率で
もって穿孔した金属板などとすることができる。The shielding member may be, for example, a thin metal plate having no opening and having a thickness of about 0.1 mm, a metal plate having small holes perforated with an appropriate opening ratio, and the like.
【0007】この発明では、電力供給手段がコイルに高
周波電力を供給するとコイルに交番磁束が発生し、この
磁束により発熱体に渦電流が誘起されて発熱する。例え
ば被加熱物を収容する鍋自体を発熱体とすると、被加熱
物に直接的に熱を加えることができる。また、発熱体と
被加熱物との間に存在する空気や液体(水又は油など)
を介して被加熱物を加熱することもできる。遮蔽部材は
コイルに供給される高周波電力の周波数近傍の電磁波
(磁力線)は殆ど減衰させることなく通過させる一方、
その高次の周波数を有する電磁波は大きく減衰させる。
従って、この発明によれば、誘導加熱の効率をあまり低
下させることなく不所望の電磁波の過剰な漏洩を防止す
ることができる。In the present invention, when the power supply means supplies high frequency power to the coil, an alternating magnetic flux is generated in the coil, and this magnetic flux induces an eddy current in the heating element to generate heat. For example, if the pan itself containing the object to be heated is the heating element, heat can be directly applied to the object to be heated. In addition, air or liquid (water or oil, etc.) existing between the heating element and the object to be heated
The object to be heated can also be heated via. The shielding member allows electromagnetic waves (lines of magnetic force) in the vicinity of the frequency of the high-frequency power supplied to the coil to pass without being attenuated,
Electromagnetic waves having the higher order frequencies are greatly attenuated.
Therefore, according to the present invention, it is possible to prevent excessive leakage of unwanted electromagnetic waves without significantly lowering the efficiency of induction heating.
【0008】本発明に係る誘導加熱装置の好ましい一実
施態様としては、電力供給手段に商用交流電流を供給す
る電源線を除き、電力供給手段及びコイルを遮蔽部材で
覆い囲う構造とするとよい。この構成によれば、遮蔽部
材によって外部へ漏洩する高周波の電磁波を大きく減衰
させることができる。In a preferred embodiment of the induction heating apparatus according to the present invention, the power supply means and the coil may be covered with a shielding member except for a power supply line for supplying a commercial alternating current to the power supply means. According to this configuration, the high-frequency electromagnetic waves leaked to the outside by the shielding member can be greatly attenuated.
【0009】また本発明に係る誘導加熱装置では、遮蔽
部材でもって略密閉可能な加熱室を形成し、該加熱室の
外側にコイルを配設する一方、加熱室内部に発熱体を設
置し、且つ加熱室内にマイクロ波を供給するためのマイ
クロ波発生手段を備える構成とすることができる。この
構成では、加熱室内に収容される被加熱物は発熱体から
放射される輻射熱とマイクロ波発生手段から供給される
マイクロ波との両者により加熱される。遮蔽部材はコイ
ルで発生する磁束を通過させるので発熱体は誘導加熱さ
れるが、マイクロ波は遮蔽部材によって加熱室から漏洩
することを妨げられる。Further, in the induction heating apparatus according to the present invention, a substantially hermetic heating chamber is formed by a shielding member, a coil is arranged outside the heating chamber, and a heating element is installed inside the heating chamber. In addition, a configuration can be employed in which a microwave generation unit for supplying a microwave into the heating chamber is provided. In this configuration, the object to be heated housed in the heating chamber is heated by both the radiant heat radiated from the heating element and the microwave supplied from the microwave generating means. Since the shielding member allows the magnetic flux generated by the coil to pass therethrough, the heating element is induction heated, but the microwave is prevented from leaking from the heating chamber by the shielding member.
【0010】また本発明に係る誘導加熱装置では、二個
のローラに巻掛けられたベルトと、該ベルト上に載置さ
れた発熱体と、ベルトを挟んで該発熱体の下側にベルト
走行方向に複数並設されたコイルとを備えて成り、該ベ
ルトが遮蔽部材として機能する構成とすることができ
る。具体的には、例えばベルトはゴム等の弾性部材の表
面に金属薄膜を貼り付けたものとすることができる。Further, in the induction heating apparatus according to the present invention, the belt wound around the two rollers, the heating element mounted on the belt, and the belt running under the heating element with the belt interposed therebetween. And a plurality of coils arranged in parallel in the direction, and the belt can function as a shielding member. Specifically, for example, the belt can be formed by attaching a metal thin film to the surface of an elastic member such as rubber.
【0011】更に本発明に係る誘導加熱装置では、前記
コイルは合成樹脂材で被覆され、前記遮蔽部材はその被
覆層の表面に形成された金属薄膜である構成とすること
ができる。この構成によれば、単に不所望の電磁波の漏
洩を抑止する以外に、金属薄膜が合成樹脂製の被覆層の
ピンホールを閉塞するので、例えば液中に浸漬する用途
においてもコイルにその液が到達することを確実に防止
できる。Further, in the induction heating apparatus according to the present invention, the coil may be covered with a synthetic resin material, and the shielding member may be a thin metal film formed on the surface of the covering layer. According to this configuration, the metal thin film closes the pinhole of the coating layer made of the synthetic resin in addition to simply suppressing the leakage of the undesired electromagnetic waves. Reaching can be reliably prevented.
【0012】[0012]
【実施例】以下、本発明に係る誘導加熱装置の第1の実
施例(以下「実施例1」という)による加熱調理装置を
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heating and cooking apparatus according to a first embodiment (hereinafter referred to as "embodiment 1") of an induction heating apparatus according to the present invention will be described.
【0013】図1は、本実施例の加熱調理装置の概略断
面図である。本実施例において、合成樹脂等の絶縁体か
ら成る筐体6の上面開口には、耐熱樹脂やセラミック等
から成る天板7が着脱自在に取り付けられており、発熱
体3である鍋は天板7上に載置される。加熱手段は、平
板渦巻き状に巻回されて成るコイル1と、該コイル1に
高周波電力を供給する高周波電源部2と、上記発熱体3
とから構成されている。高周波電源部2には商用電源線
8を通して外部から商用電源が供給されるようになって
おり、その途中には電源電圧に重畳している高周波雑音
を除去するためのノイズフィルタ4が設けられている。
コイル1と高周波電源部2とは、共に箱形状に成形され
た遮蔽板5により隙間なく周囲を覆われている。この遮
蔽板5は例えばステンレスSUS304から成る薄い金
属板である。FIG. 1 is a schematic sectional view of a heating cooking apparatus according to this embodiment. In this embodiment, a top plate 7 made of a heat-resistant resin, ceramic, or the like is detachably attached to an upper surface opening of a housing 6 made of an insulator such as a synthetic resin. 7. The heating means includes a coil 1 wound in a plate spiral shape, a high-frequency power supply 2 for supplying high-frequency power to the coil 1, and a heating element 3.
It is composed of The high-frequency power supply unit 2 is supplied with commercial power from the outside through a commercial power supply line 8, and a noise filter 4 for removing high-frequency noise superimposed on the power supply voltage is provided in the middle thereof. I have.
The coil 1 and the high-frequency power supply unit 2 are both covered by a box-shaped shielding plate 5 without any gap. The shielding plate 5 is a thin metal plate made of, for example, stainless steel SUS304.
【0014】上記加熱調理装置では、商用電源線8を介
して商用電源電流が高周波電源部2に供給され、加熱に
際しては高周波電源部2からコイル1に数十kHz程度
の周波数を有する高周波電流が供給される。これによ
り、コイル1には交番磁束が発生し、該磁束は遮蔽板5
と天板7とを通過して発熱体3を貫通する。その際に発
熱体3には多数の渦電流が発生し、その渦電流損失によ
り発熱体3自体が熱を発する。高周波電源部2は効率的
に加熱電力を供給するため、例えばインバータ回路を含
んで構成されており、上記高周波電流の高調波成分を有
する電磁波を発生する。こうした電磁波は主としてコイ
ル1自体から周囲に放出されるが、遮蔽板5により妨げ
られて遮蔽板5から外部へは殆ど漏洩しない。In the cooking device, a commercial power supply current is supplied to the high-frequency power supply unit 2 via the commercial power supply line 8, and a high-frequency current having a frequency of about several tens of kHz is supplied from the high-frequency power supply unit 2 to the coil 1 during heating. Supplied. As a result, an alternating magnetic flux is generated in the coil 1, and the magnetic flux is applied to the shielding plate 5.
, And through the heating element 3. At that time, a large number of eddy currents are generated in the heating element 3, and the heating element 3 itself generates heat due to the eddy current loss. The high-frequency power supply unit 2 is configured to include, for example, an inverter circuit in order to efficiently supply heating power, and generates an electromagnetic wave having a harmonic component of the high-frequency current. Such an electromagnetic wave is mainly emitted from the coil 1 itself to the surroundings, but is blocked by the shield plate 5 and hardly leaks from the shield plate 5 to the outside.
【0015】ここで、上記遮蔽板5の遮蔽効果を下の表
1により説明する。表1は、遮蔽板の板厚と高周波電磁
波の遮蔽効果との関係を示す表である。例えば板厚が
0.1mmである場合、発熱体の加熱のために必要な2
5kHzの周波数成分は82%が通過し、遮蔽板での減
衰は18%だけである。これに対し、150MHzの周
波数を有する電磁波はほぼ完全に遮蔽されている。すな
わち、このような遮蔽板を用いることにより、誘導加熱
を損なうことなく高調波成分を遮蔽することができる。Here, the shielding effect of the shielding plate 5 will be described with reference to Table 1 below. Table 1 is a table showing the relationship between the thickness of the shielding plate and the shielding effect of high-frequency electromagnetic waves. For example, when the plate thickness is 0.1 mm, 2
82% of the 5 kHz frequency component passes and only 18% of the attenuation at the shielding plate. In contrast, electromagnetic waves having a frequency of 150 MHz are almost completely shielded. That is, by using such a shielding plate, harmonic components can be shielded without impairing induction heating.
【0016】[0016]
【表1】 [Table 1]
【0017】次に、本発明に係る第2の実施例(以下
「実施例2」という)による加熱調理装置を図2により
説明する。この加熱調理装置は、多数の調理を同時に行
うに適した業務用の調理装置である。Next, a heating and cooking apparatus according to a second embodiment (hereinafter, referred to as "embodiment 2") of the present invention will be described with reference to FIG. This heating cooking device is a commercial cooking device suitable for performing a large number of cooking operations simultaneously.
【0018】実施例2の加熱調理装置では、水平に設置
された2個のローラ10、11の間に無端ベルト12が
掛け渡され、ベルト12上には実施例1で述べたような
鍋状の発熱体3がベルト走行方向に並べて載置される。
ベルト12上面の下側にはベルト走行方向に並べて複数
のコイル1が固設されており、各コイル1には高周波電
源部2から高周波電力が供給されるようになっている。In the heating and cooking apparatus of the second embodiment, an endless belt 12 is stretched between two rollers 10 and 11 installed horizontally, and a pan-shaped belt as described in the first embodiment is placed on the belt 12. Are placed side by side in the belt running direction.
A plurality of coils 1 are fixedly arranged below the upper surface of the belt 12 in the belt running direction, and each coil 1 is supplied with high-frequency power from a high-frequency power supply unit 2.
【0019】一方のローラ10は図示しないモータによ
って所定の速度で回転駆動される。これによりベルト1
2は所定速度で走行し、他方のローラ11は従動する。
ベルト12の走行に従ってベルト12上に載置された発
熱体3は移動するが、順次異なるコイル1から発生する
磁束によって誘導加熱されるので、ベルト12上を走行
する期間中、ほぼ常時加熱され続ける。One roller 10 is driven to rotate at a predetermined speed by a motor (not shown). With this, belt 1
2 runs at a predetermined speed, and the other roller 11 is driven.
While the heating element 3 placed on the belt 12 moves as the belt 12 travels, the heating element 3 is heated inductively by the magnetic flux generated from the different coils 1 sequentially. .
【0020】ベルト12は、例えばゴム製のベルトの表
面に蒸着により金属薄膜を形成した構成としている。従
って、ベルト12自体が遮蔽板の機能を有する。また、
発熱体3内の収容物から周囲に飛散した油や食品の破片
などはベルト12上面に付着するが、これらはスクイジ
ー13によって掻き取られる。The belt 12 has a structure in which a metal thin film is formed on the surface of, for example, a rubber belt by vapor deposition. Therefore, the belt 12 itself has a function of a shielding plate. Also,
Oil and food fragments scattered from the contents in the heating element 3 to the surroundings adhere to the upper surface of the belt 12, but are scraped off by the squeegee 13.
【0021】次に、本発明に係る誘導加熱装置の第3の
実施例(以下「実施例3」という)による加熱調理装置
を説明する。実施例3の加熱調理装置は、加熱手段とし
て、上述の誘導加熱によるものと電子レンジと同様のマ
イクロ波加熱によるものとを併せ持っている。Next, a heating and cooking apparatus according to a third embodiment (hereinafter referred to as "embodiment 3") of the induction heating apparatus according to the present invention will be described. The heating and cooking apparatus according to the third embodiment includes both the above-described induction heating device and the microwave heating device similar to a microwave oven as heating means.
【0022】図3は実施例3の加熱調理装置の概略断面
図である。筐体21内にはセラミック又は耐熱性樹脂等
の絶縁体から成る直方体形状の加熱室22が形成されて
おり、加熱室22の前面開口はドア23により略密閉可
能となっている。加熱室22の後壁面には導波管24を
介してマグネトロン25が取り付けられており、加熱室
22底部には食品等の被加熱物を載置するためのターン
テーブル26がモータ27により回転自在に設けられて
いる。FIG. 3 is a schematic sectional view of a heating and cooking apparatus according to the third embodiment. A rectangular parallelepiped heating chamber 22 made of an insulator such as ceramic or heat-resistant resin is formed in the housing 21, and a front opening of the heating chamber 22 can be substantially closed by a door 23. A magnetron 25 is attached to the rear wall surface of the heating chamber 22 via a waveguide 24, and a turntable 26 for mounting an object to be heated such as food is rotatable by a motor 27 at the bottom of the heating chamber 22. It is provided in.
【0023】加熱室22の外側には、上面、側面及び下
面を周回するようにコイル28が巻回されており、該コ
イル28には後部に配設された高周波電源部29から高
周波電力が供給されるようになっている。また、加熱室
22内側には、加熱室22内壁面と所定の間隙をもって
前面側及び後面側とが開口した四角筒状の発熱体30が
設置されている。A coil 28 is wound around the outside of the heating chamber 22 so as to go around the upper surface, the side surface and the lower surface, and the coil 28 is supplied with high-frequency power from a high-frequency power supply unit 29 provided at the rear. It is supposed to be. Further, inside the heating chamber 22, a square tubular heating element 30 whose front side and rear side are open with a predetermined gap from the inner wall surface of the heating chamber 22 is installed.
【0024】加熱室22内面とドア23内面とには、導
波管24取付部を除いて遮蔽板31が貼り付けられてい
る。遮蔽板31は、例えば実施例1における遮蔽板と同
様の金属板とすることができる。すなわち、遮蔽板31
はコイル28より発生する磁束を通過させつつ、マグネ
トロン25より加熱室22内部に送出されるマイクロ波
が外部へ漏洩するのを防止する。A shielding plate 31 is attached to the inner surface of the heating chamber 22 and the inner surface of the door 23 except for the mounting portion of the waveguide 24. The shielding plate 31 can be, for example, a metal plate similar to the shielding plate in the first embodiment. That is, the shielding plate 31
Prevents the microwave transmitted from the magnetron 25 into the heating chamber 22 from leaking outside while allowing the magnetic flux generated from the coil 28 to pass through.
【0025】上記構成では、高周波電源部29からコイ
ル28に高周波電流が流されると、コイル28で発生し
た磁束が遮蔽板31を通過して発熱体30に貫通する。
これにより、発熱体30は発熱し、その輻射熱によって
ターンテーブル26上に載置された被加熱物は加熱調理
される。また、マグネトロン25が駆動されると導波管
24を介して加熱室22内にマイクロ波が送り込まれ、
これによっても被加熱物が加熱調理される。両者の併用
により迅速に加熱が行えると共に、発熱体30からの熱
により被加熱物の表面に焼目を付けることができる。In the above configuration, when a high-frequency current flows from the high-frequency power supply unit 29 to the coil 28, the magnetic flux generated by the coil 28 passes through the shielding plate 31 and penetrates the heating element 30.
As a result, the heating element 30 generates heat, and the object to be heated placed on the turntable 26 is heated and cooked by the radiant heat. When the magnetron 25 is driven, microwaves are sent into the heating chamber 22 through the waveguide 24,
This also heats the object to be heated. By using both of them, heating can be performed quickly, and the surface of the object to be heated can be burned by the heat from the heating element 30.
【0026】なお、遮蔽板31としては開口のない金属
板を用いる以外に、小孔を多数穿孔した金属板(いわゆ
るパンチングメタル)を用いてもよい。また、若干肉厚
の金属板であっても抵抗率の高い金属であれば誘導加熱
の負荷となりにくいので、遮蔽板31として用いること
ができる。In addition to a metal plate having no opening, a metal plate having many small holes (a so-called punching metal) may be used as the shielding plate 31. In addition, even if the metal plate has a relatively large thickness, a metal having a high resistivity is unlikely to be a load for induction heating, and thus can be used as the shielding plate 31.
【0027】次に、本発明に係る第4の実施例(以下
「実施例4」という)による加熱調理装置を図4により
説明する。この加熱調理装置は、食用油を用いて食品の
揚げ調理を行うための調理装置であって、上述のように
金属遮蔽板の電磁波遮蔽効果のみならず、メッキ等によ
り形成される金属薄膜の均一性を利用している。Next, a heating and cooking apparatus according to a fourth embodiment (hereinafter referred to as "embodiment 4") of the present invention will be described with reference to FIG. This heating cooking device is a cooking device for carrying out fried cooking of food using edible oil. As described above, not only the electromagnetic shielding effect of the metal shielding plate but also the uniformity of the metal thin film formed by plating or the like is provided. Utilize sex.
【0028】深型の鍋40内側には、渦巻き状に巻回さ
れたコイル41を耐熱性の合成樹脂層42によってモー
ルドしたコイル支持体43が固定して設けられている。
合成樹脂層42の表面には金属薄膜44が無電解メッキ
等により形成されている。また、コイル支持体43上部
には、平板ドーナツ状の発熱体45が取り付けられてい
る。この発熱体45は平板形状であることによって、表
面積が広くなっている。Inside the deep pot 40, a coil support 43 in which a coil 41 wound in a spiral shape is molded with a heat-resistant synthetic resin layer 42 is fixedly provided.
On the surface of the synthetic resin layer 42, a metal thin film 44 is formed by electroless plating or the like. In addition, a flat donut-shaped heating element 45 is attached to the upper portion of the coil support 43. The heating element 45 has a large surface area due to the flat shape.
【0029】図示しない高周波電源部からコイル41に
高周波電力が供給されると、コイル41から発生した磁
束が発熱体45を貫通し、渦電流損によって発熱体45
が発熱する。この発熱体45が浸漬するように鍋40に
収容された食用油は発熱体45との熱交換によって加熱
され、食用油中に投入された食品は揚げ調理される。When high-frequency power is supplied to the coil 41 from a high-frequency power supply (not shown), the magnetic flux generated from the coil 41 passes through the heating element 45, and the heating element 45
Generates heat. The cooking oil contained in the pot 40 is heated by heat exchange with the heating element 45 so that the heating element 45 is immersed, and the food put into the cooking oil is fried and cooked.
【0030】上記のような合成樹脂材によるモールドは
製造コストが安価であるが、一方製造の過程でピンホー
ルが発生し易い。しかしながら、上述のように合成樹脂
層42表面にメッキなどによって形成された金属薄膜4
4はピンホールを閉塞するので、内部のコイル41の液
密性が高まり、周囲の油がコイル41に接触してコイル
41が腐食し易くなることを防止することができる。Although the above-mentioned mold made of a synthetic resin material is inexpensive to manufacture, on the other hand, pinholes are liable to occur during the manufacturing process. However, as described above, the metal thin film 4 formed on the surface of the synthetic resin layer 42 by plating or the like.
Since the pinhole 4 closes the pinhole, the liquid tightness of the internal coil 41 is improved, and it is possible to prevent the surrounding oil from being in contact with the coil 41 and the coil 41 from being easily corroded.
【0031】次に、本発明に係る第5の実施例(以下
「実施例5」という)による液体加熱装置を図5により
説明する。この液体加熱装置は、円筒形状の金属製パイ
プ51の途中に肉薄の金属から成る円筒体52を溶接に
よって取り付けて成る。円筒体52の周囲にはコイル5
3が巻回されており、円筒体52の内部には円筒形状の
発熱体54が収容されている。図示しない高周波電源部
からコイル53に高周波電力が供給されると、コイル5
3から発生した磁束が円筒体52を通過して発熱体54
を貫通し、発熱体54は渦電流損により発熱する。金属
製パイプ51中には水やその他の液体が流通され、発熱
体54と熱交換することによってそれら液体は加熱され
る。Next, a liquid heating apparatus according to a fifth embodiment (hereinafter, referred to as "embodiment 5") of the present invention will be described with reference to FIG. This liquid heating apparatus is constructed by attaching a thin metal body 52 to a cylindrical metal pipe 51 by welding. A coil 5 is provided around the cylindrical body 52.
3 is wound, and a cylindrical heating element 54 is accommodated inside the cylindrical body 52. When high frequency power is supplied to the coil 53 from a high frequency power supply unit (not shown), the coil 5
3 passes through the cylindrical body 52 and passes through the heating element 54.
, And the heating element 54 generates heat due to eddy current loss. Water and other liquids are circulated in the metal pipe 51, and the liquids are heated by exchanging heat with the heating element 54.
【0032】従来、円筒体52はセラミックなどの絶縁
体から形成されていたため溶接による接合が行えなかっ
たが、本発明によれば金属を円筒体52に用いることが
できるので、金属製パイプ51との継ぎ目を溶接により
接合することができる。このため、製造が容易になりコ
ストが削減できる。Conventionally, since the cylindrical body 52 was formed of an insulator such as ceramics, joining by welding could not be performed. However, according to the present invention, metal can be used for the cylindrical body 52. Can be joined by welding. For this reason, manufacturing becomes easy and cost can be reduced.
【0033】なお、上記実施例は一例であって、本発明
の趣旨の範囲で適宜変更や修正を行なえることは明らか
である。The above embodiment is merely an example, and it is apparent that changes and modifications can be made within the spirit of the present invention.
【図1】 本発明の第1の実施例による加熱調理装置の
構成図。FIG. 1 is a configuration diagram of a cooking device according to a first embodiment of the present invention.
【図2】 本発明の第2の実施例による加熱調理装置の
構成図。FIG. 2 is a configuration diagram of a heating cooking device according to a second embodiment of the present invention.
【図3】 本発明の第3の実施例による加熱調理装置の
構成図。FIG. 3 is a configuration diagram of a heating cooking device according to a third embodiment of the present invention.
【図4】 本発明の第4の実施例による加熱調理装置の
構成図。FIG. 4 is a configuration diagram of a heating cooking device according to a fourth embodiment of the present invention.
【図5】 本発明の第5の実施例による液体加熱装置の
構成図。FIG. 5 is a configuration diagram of a liquid heating device according to a fifth embodiment of the present invention.
1、28、41…コイル 2、29…高周波電源部 3、30、45…発熱体 4…ノイズフィルタ 5、31…遮蔽板 6…筐体 7…天板 8…商用電源線 10、11…ローラ 12…ベルト 22…加熱室 23…ドア 25…マグネトロン 43…コイル支持体 44…金属薄膜 1, 28, 41 ... coil 2, 29 ... high frequency power supply 3, 30, 45 ... heating element 4 ... noise filter 5, 31 ... shielding plate 6 ... housing 7 ... top plate 8 ... commercial power line 10, 11 ... roller DESCRIPTION OF SYMBOLS 12 ... Belt 22 ... Heating chamber 23 ... Door 25 ... Magnetron 43 ... Coil support 44 ... Metal thin film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平田 俊之 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 Fターム(参考) 3K051 AA02 AA08 AB02 AB04 AB05 AB13 AC09 AC10 AD23 AD27 AD35 AD40 CD42 CD43 CD44 3K059 AA02 AA08 AA15 AB04 AB13 AB19 AB20 AC09 AC10 AD23 AD27 AD35 CD44 CD52 CD75 3K086 AA03 AA05 BA03 BA08 BB02 BB03 CB04 CB12 CB15 CC01 CC06 EA06 FA03 3K090 AA03 AA12 AB02 BA01 BA09 BB01 CA01 EA01 EA03 EB02 EB26 3L087 AA03 AC15 AC21 CA12 CB02 CC03 DA02 DA23 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toshiyuki Hirata 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (reference) 3K051 AA02 AA08 AB02 AB04 AB05 AB13 AC09 AC10 AD23 AD27 AD35 AD40 CD42 CD43 CD44 3K059 AA02 AA08 AA15 AB04 AB13 AB19 AB20 AC09 AC10 AD23 AD27 AD35 CD44 CD52 CD75 3K086 AA03 AA05 BA03 BA08 BB02 BB03 CB04 CB12 CB15 CC01 CC06 EA06 FA03 3K090 AA03 A03 EA02 EB01 BA01 BA01 BA01 BA01 BA03 CA12 CB02 CC03 DA02 DA23
Claims (5)
て発生する磁束の通過を実質的に妨げないような、金属
性材料から成る遮蔽部材と、 を備えることを特徴とする誘導加熱装置。A) a coil; b) power supply means for supplying high-frequency power to the coil; c) a heating element induction-heated by the coil; d) a heating element between the heating element and the coil. And a shielding member made of a metallic material that does not substantially prevent passage of magnetic flux generated by the coil.
除き、該電力供給手段及びコイルを遮蔽部材で覆い囲う
ことを特徴とする請求項1に記載の誘導加熱装置。2. The induction heating apparatus according to claim 1, wherein the power supply means and the coil are covered with a shielding member except for a power supply line for supplying power to the power supply means.
室を形成し、該加熱室の外側にコイルを配設する一方、
加熱室内部に発熱体を設置し、且つ加熱室内にマイクロ
波を供給するためのマイクロ波発生手段を備えることを
特徴とする請求項1に記載の誘導加熱装置。3. A heating chamber capable of being substantially sealed by the shielding member is formed, and a coil is disposed outside the heating chamber.
2. The induction heating apparatus according to claim 1, wherein a heating element is provided inside the heating chamber, and a microwave generating means for supplying a microwave into the heating chamber is provided.
し、複数の発熱体が該ベルト上に載置され、該ベルトを
挟んで発熱体の下側に複数のコイルがベルト走行方向に
複数並設されて成り、該ベルトが前記遮蔽部材として機
能することを特徴とする請求項1に記載の誘導加熱装
置。4. A heating device having a belt wound around two rollers, a plurality of heating elements mounted on the belt, and a plurality of coils disposed below the heating element with the belt interposed therebetween in a belt running direction. 2. The induction heating device according to claim 1, wherein a plurality of belts function as the shielding member. 3.
記遮蔽部材はその被覆層の表面に形成された金属薄膜で
あることを特徴とする請求項1に記載の誘導加熱装置。5. The induction heating apparatus according to claim 1, wherein the coil is covered with a synthetic resin material, and the shielding member is a metal thin film formed on a surface of the covering layer.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21224698A JP2000048944A (en) | 1998-07-28 | 1998-07-28 | Induction heating device |
US09/253,940 US6147336A (en) | 1998-02-26 | 1999-02-22 | Induction heaters for heating food, fluids or the like |
IT1999MI000362A IT1309716B1 (en) | 1998-02-26 | 1999-02-23 | INDUCTION HEATER, PARTICULARLY APPLICABLE TO A COOKING EQUIPMENT FOR HEATING FOODS OR OTHER PRODUCTS |
KR1019990005892A KR100597966B1 (en) | 1998-02-26 | 1999-02-23 | Induction heater and heating cooking apparatus using the same |
CNB991031512A CN1138456C (en) | 1998-02-26 | 1999-02-26 | Induction heater |
DE19908443A DE19908443A1 (en) | 1998-02-26 | 1999-02-26 | Combination microwave and induction heating cooker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21224698A JP2000048944A (en) | 1998-07-28 | 1998-07-28 | Induction heating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000048944A true JP2000048944A (en) | 2000-02-18 |
Family
ID=16619404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21224698A Pending JP2000048944A (en) | 1998-02-26 | 1998-07-28 | Induction heating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000048944A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005523149A (en) * | 2002-04-19 | 2005-08-04 | シーイーエム・コーポレーション | Microwave-assisted chemical synthesis instrument with controlled pressure release |
WO2007055132A1 (en) * | 2005-11-11 | 2007-05-18 | Sanyo Electric Co., Ltd. | Cooking device |
-
1998
- 1998-07-28 JP JP21224698A patent/JP2000048944A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005523149A (en) * | 2002-04-19 | 2005-08-04 | シーイーエム・コーポレーション | Microwave-assisted chemical synthesis instrument with controlled pressure release |
US7820951B2 (en) | 2002-04-19 | 2010-10-26 | Cem Corporation | Microwave assisted chemical synthesis instrument with controlled pressure release |
US7829828B2 (en) | 2002-04-19 | 2010-11-09 | Cem Corporation | Microwave assisted chemical synthesis instrument with controlled pressure release |
US8426783B2 (en) | 2002-04-19 | 2013-04-23 | Cem Corporation | Microwave assisted chemical synthesis instrument with controlled pressure release |
WO2007055132A1 (en) * | 2005-11-11 | 2007-05-18 | Sanyo Electric Co., Ltd. | Cooking device |
GB2446347A (en) * | 2005-11-11 | 2008-08-06 | Sanyo Electric Co | Cooking apparatus |
GB2446347B (en) * | 2005-11-11 | 2011-04-27 | Sanyo Electric Co | Cooking apparatus |
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