JPH0676942A - Heating cooking unit - Google Patents
Heating cooking unitInfo
- Publication number
- JPH0676942A JPH0676942A JP13032293A JP13032293A JPH0676942A JP H0676942 A JPH0676942 A JP H0676942A JP 13032293 A JP13032293 A JP 13032293A JP 13032293 A JP13032293 A JP 13032293A JP H0676942 A JPH0676942 A JP H0676942A
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- blade
- heating
- heating chamber
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electric Ovens (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は高周波加熱装置に関し、
特に均一の加熱の度合が最も必要なシーフードの冷凍切
身や冷凍肉などが充分満足できる程度迄、加熱室内の高
周波電磁波による加熱の均一度を上げる構成に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency heating device,
In particular, the present invention relates to a structure for increasing the uniformity of heating by high-frequency electromagnetic waves in the heating chamber to the extent that frozen fillets and frozen meat of seafood, which require the most uniform degree of heating, can be sufficiently satisfied.
【0002】[0002]
【従来の技術】冷凍食品を解凍する手段として高周波加
熱は時間が短いなどの特徴があるが、一方、氷の状態と
解凍された状態とで高周波加熱の度合が解凍された状態
の方が1000倍程度多く加熱される為に、どこか一ヶ
所解凍されるとそこが異常に強く加熱されて煮えてしま
い、他の部分はまだ氷の状態になっているという欠点が
あり、その為に高周波加熱の均一度を充分良くしておか
ないと満足な解凍性能は得られない。2. Description of the Prior Art As a means for thawing frozen foods, high-frequency heating is characterized by a short time and the like. On the other hand, the degree of high-frequency heating between iced state and thawed state is 1000. Since it is heated about twice as much, if it is thawed somewhere somewhere, it will be heated abnormally strongly and will boil, and the other part will still be in the state of ice, so the high frequency Satisfactory thawing performance cannot be obtained unless the heating uniformity is sufficiently improved.
【0003】従来から、加熱室内の被加熱物を均一に加
熱する方法は数多く提案されていて、高周波電磁波を攪
拌する攪拌羽根方式や、被加熱物を回転する回転載置台
方式や電磁波を放射するアンテナを回転する方式などが
いくつか提案されている。又これらを組合わせて、攪拌
羽根方式と、回転載置台方式の両方を備えた方式のもの
もある。Conventionally, many methods for uniformly heating an object to be heated in a heating chamber have been proposed. A stirring blade method for agitating high-frequency electromagnetic waves, a rotary mounting table method for rotating an object to be heated, and electromagnetic waves are radiated. Several methods such as rotating the antenna have been proposed. There is also a system that combines both of them and has both a stirring blade system and a rotary mounting system.
【0004】この代表的な例が特公昭60−25875
に示すように加熱室底面に回転載置台を設けさらに加熱
室の後部に攪拌羽根を配置して、加熱室内の被加熱物の
加熱を均一にしようとするものである。A typical example of this is Japanese Patent Publication No. 60-25875.
As shown in FIG. 3, a rotary mounting table is provided on the bottom surface of the heating chamber, and a stirring blade is arranged at the rear part of the heating chamber to uniformly heat the object to be heated in the heating chamber.
【0005】図9に示すように加熱室33の底面には回
転載置台34が設けられている。加熱室後壁35のシボ
リ部36には、金属性電波攪拌羽根37を設け、加熱室
上壁38に設けられた導波管39を通じて、加熱室33
内に放射される電波を、前記電波攪拌羽根37で攪拌し
つつ回転載置台34を回し、被加熱物40を回転移動さ
せ、均一加熱を図ろうとするものである。As shown in FIG. 9, a rotary mount 34 is provided on the bottom surface of the heating chamber 33. A metallic radio wave agitating blade 37 is provided on a hollow portion 36 of the heating chamber rear wall 35, and a heating chamber 33 is provided through a waveguide 39 provided on the heating chamber upper wall 38.
The electromagnetic wave radiated inside is stirred by the electromagnetic wave stirring blades 37, the rotary mounting table 34 is rotated, and the object 40 to be heated is rotatively moved to achieve uniform heating.
【0006】しかしながら、この構成においては、導波
管39を通じて、加熱室33内に放射される高周波電磁
波の全てが電波攪拌羽根37で攪拌されるわけではない
ので、攪拌効果が十分ではなく、又加熱室上壁38に導
波管39が設けられているため、負荷の上方部分が多く
加熱される傾向があり、さらに通常、加熱室上下に電熱
装置を設ける電熱装置付加熱調理器においては、上ヒー
ターの構成が、導波管39の為に困難で、十分なヒータ
ー加熱分布が得にくい等の課題があった。However, in this configuration, not all the high frequency electromagnetic waves radiated into the heating chamber 33 through the waveguide 39 are stirred by the radio wave stirring blade 37, so that the stirring effect is not sufficient, and Since the waveguide 39 is provided on the upper wall 38 of the heating chamber, the upper part of the load tends to be heated a lot, and normally, in an electric heating device-added heat cooker in which electric heating devices are provided above and below the heating chamber, The configuration of the upper heater is difficult because of the waveguide 39, and there is a problem that it is difficult to obtain a sufficient heater heating distribution.
【0007】又米国特許第2,748,239号明細書
に示されるように加熱室後壁に高周波電磁波の開口を設
け、開口に連結された導波管内に電波攪拌羽根を設けこ
れを回転して加熱室内の高周波電磁波の電界を均一にし
ようとするものであるが、加熱室後方に開口を設けてい
る為食品などの被加熱物の後方部がどうしても強く加熱
されるという傾向があり、電波攪拌羽根により高周波電
磁波を攪拌しても同様の傾向は変化しない為高度な高周
波電磁波の均一度を要求される解凍などでは一部が煮え
て一部が氷のままという状態が生じていた。Further, as shown in US Pat. No. 2,748,239, an opening for high frequency electromagnetic waves is provided in the rear wall of the heating chamber, and a wave stirring blade is provided in a waveguide connected to the opening to rotate the wave. Although the electric field of high frequency electromagnetic waves in the heating chamber is to be made uniform, there is a tendency that the rear part of the object to be heated such as food is heated strongly because the opening is provided behind the heating chamber. The same tendency does not change even if the high-frequency electromagnetic wave is stirred by the stirring blade, so that in the thawing that requires a high degree of high-frequency electromagnetic wave homogeneity, a part of it was boiled and part of it remained iced.
【0008】さらに米国特許第4,136,271号明
細書については上部に高周波電磁波を放射するアンテナ
と、高周波電磁波を攪拌する電波攪拌羽根を配置し、底
面に回転載置台を配置する方法が提案されている。しか
しこの方法はアンテナと、電波攪拌羽根が近接している
為、電波攪拌羽根の攪拌効果は充分あるが、電磁波の供
給部分が上部にある為、回転載置台の中心部分に到達し
にくく、又回転載置台の中心部分と外周部分との加熱バ
ランスが取りにくく、又どうしても外周部分の方が加熱
が多く、結果として均一加熱になり得ていなかった。又
上部に電磁波の供給部分がある場合は、上部よりの電磁
波が一度加熱室側面に反射して、回転載置台の面に到達
する為加熱室の大きさや上部の供給部分の位置などが少
し変わると回転載置台面の付近の加熱の度合が大きく変
わるという欠点があった。又牛乳などをコップに入れて
温める場合はどうしても上部が強く加熱されるという不
具合も生じていた。Further, in US Pat. No. 4,136,271, there is proposed a method in which an antenna for radiating high frequency electromagnetic waves and a radio wave stirring blade for stirring high frequency electromagnetic waves are arranged on the upper portion and a rotary mounting table is arranged on the bottom surface. Has been done. However, in this method, since the antenna and the radio wave stirring blade are close to each other, the stirring effect of the radio wave stirring blade is sufficient, but it is difficult to reach the central portion of the rotary mounting table because the electromagnetic wave supplying portion is at the top. It was difficult to balance the heating between the central portion and the outer peripheral portion of the rotary mounting table, and the outer peripheral portion inevitably had more heating, and as a result, uniform heating could not be achieved. When there is an electromagnetic wave supply part on the upper part, the electromagnetic wave from the upper part is once reflected on the side surface of the heating chamber and reaches the surface of the rotary mounting table, so that the size of the heating chamber and the position of the upper supply part are slightly changed. There was a drawback that the degree of heating near the surface of the rotary mounting table greatly changed. In addition, when milk or the like is put in a cup and warmed, the upper part is inevitably heated strongly.
【0009】いずれの方法についても、均一に解凍が出
来るレベル迄の電磁波の均一度が上がっていなかった。
又一般の加熱においてもそれぞれ不均一さがあった。In any of the methods, the homogeneity of the electromagnetic wave was not increased to the level where uniform thawing was possible.
Moreover, there was nonuniformity in general heating.
【0010】[0010]
【発明が解決しようとする課題】本発明は上記課題を解
決することを目的とする。すなわち、高周波加熱装置に
おいて魚肉類の解凍を行なう時、被解凍物が煮えること
なく又氷った所がない状態で解凍できる加熱装置を提供
することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems. That is, it is an object of the present invention to provide a heating device capable of thawing fish meat in a high-frequency heating device when the fish meat is thawed without boiling the object to be thawed and without ice.
【0011】本発明はさらに、牛乳などを温める場合も
上部の方が熱いという加熱ムラの欠点や、角のある被加
熱物の加熱において角が強く加熱される欠点をもなくす
ることを目的とする。It is another object of the present invention to eliminate the disadvantages of uneven heating such that the upper part is hotter even when warming milk or the like, and the disadvantage that the corners are heated strongly when heating an object having a corner. To do.
【0012】本発明はさらに加えて、加熱調理器にヒー
ター加熱を構成する場合も簡単に構成出来、ヒーター加
熱の加熱ムラもない加熱装置を提供することを目的とす
る。It is another object of the present invention to provide a heating device which can be easily constructed even when a heater is provided in a heating cooker and which does not have uneven heating.
【0013】本発明はさらに加えて、簡単な構成で、組
立性も良く耐久性、信頼性に優れかつ使用者の異常使用
においても安全かつ堅牢な加熱装置を提供することを目
的とする。Another object of the present invention is to provide a heating device having a simple structure, excellent assemblability, excellent durability and reliability, and safe and robust even during abnormal use by a user.
【0014】[0014]
【課題を解決するための手段】上記目的を達成するため
に、本発明の加熱調理器は下記構成とした。In order to achieve the above object, the heating cooker of the present invention has the following constitution.
【0015】本体内に被加熱物を加熱する加熱室と、高
周波電磁波を発生する高周波発生装置と、前記高周波発
生装置の前記高周波電磁波を前記加熱室に導く導波管
と、前記被加熱物を支持して、これと共に回転する回転
載置台と、前記加熱室内の高周波電磁波を攪拌する電波
攪拌羽根を備え、前記導波管の給電口は前記加熱室側面
に配置し、前記給電口に対向して、前記導波管内に前記
電波攪拌羽根を設け、前記給電口の開口周縁部と前記電
波攪拌羽根の外周との距離が周縁部の位置によって異な
る形状とした。A heating chamber for heating an object to be heated in the main body, a high frequency generator for generating high frequency electromagnetic waves, a waveguide for guiding the high frequency electromagnetic waves of the high frequency generator to the heating chamber, and the object to be heated. A rotation mounting table that supports and rotates with it, and a radio wave agitating blade that agitates high frequency electromagnetic waves in the heating chamber are provided, and the power feeding port of the waveguide is disposed on the side surface of the heating chamber and faces the power feeding port. The wave stirring blade is provided in the waveguide, and the distance between the peripheral edge of the opening of the power supply port and the outer circumference of the radio wave stirring blade is different depending on the position of the peripheral edge.
【0016】また、前記給電口の前記開口周縁部の下端
は、前記回転載置台より上に位置した構成とした。Further, the lower end of the opening peripheral portion of the power supply port is located above the rotary mounting table.
【0017】前記回転載置台の回転軸線と前記電波攪拌
羽根の回転軸線は略直角に交叉する構成とした。The rotation axis of the rotary mounting table and the rotation axis of the radio wave agitating blade intersect at a substantially right angle.
【0018】また、前記電波攪拌羽根の回転数は、前記
回転載置台の回転数と違った回転数で回転する構成とし
た。The number of revolutions of the radio wave stirring blade is different from that of the rotary mounting table.
【0019】また、前記給電口に低損失誘電体で作られ
た給電口カバーを設けた構成とした。Further, the power supply port is provided with a power supply port cover made of a low-loss dielectric material.
【0020】また、前記給電口カバーは低誘電損失の硝
子で構成した。また、前記給電口カバーの外周端面部に
低誘電損失の弾性を有する枠体で覆い、前記枠体は前記
給電口カバーより前記加熱室側に突出した構成とした。The power supply port cover is made of glass having a low dielectric loss. The outer peripheral end surface of the power feed port cover is covered with a frame body having elasticity with low dielectric loss, and the frame body is configured to project from the power feed port cover toward the heating chamber.
【0021】また、前記給電口カバーの表面に低誘電損
失のインクで印刷した印刷層を有する構成とした。Further, the surface of the power supply port cover has a printing layer printed with low dielectric loss ink.
【0022】また、前記電波攪拌羽根は回転軸部にガタ
を有する駆動用モーターで回転する構成とし、前記駆動
用モーターの回転軸を水平方向よりやや上目に傾くよう
に固着した構成とした。Further, the radio wave agitating blade is configured to rotate by a drive motor having a play in a rotation shaft portion, and the rotation shaft of the drive motor is fixed so as to be tilted slightly above the horizontal direction.
【0023】また、前記導波管は前記電波攪拌羽根を収
納する電波攪拌羽根室を有し、前記駆動用モーターの取
付部となる前記電波攪拌羽根室壁の一部に凸部を設け、
前記駆動用モーターと、前記攪拌羽根室との間に隙間が
出来るように構成した。The waveguide has a radio wave agitation blade chamber for accommodating the radio wave agitation blade, and a convex portion is provided on a part of the radio wave agitation blade chamber wall which is a mounting portion of the drive motor.
A gap is formed between the drive motor and the stirring blade chamber.
【0024】また、前記導波管と前記電波攪拌羽根室と
を一体構成とし、前記加熱室側壁と対向する前記電波攪
拌羽根室に前記給電口を設けた構成とした。Further, the waveguide and the radio wave stirring blade chamber are integrally formed, and the power feeding port is provided in the radio wave stirring blade chamber facing the side wall of the heating chamber.
【0025】また、前記給電口は前記加熱室壁の後壁に
設け、前記給電口は前記電波攪拌羽根よりも大きくした
構成とした。The power supply port is provided on the rear wall of the heating chamber wall, and the power supply port is larger than the radio wave stirring blade.
【0026】また、前記電波攪拌羽根に対向する前記電
波攪拌羽根室の部分に塗装を施した構成とした。Further, the portion of the radio wave agitating blade chamber facing the radio wave agitating blade is painted.
【0027】また、前記電波攪拌羽根には低損失誘電体
で作られたボスを有し、前記ボスは複数個の張出し部を
設け、前記電波攪拌羽根には前記高周波電磁波の波長の
略4分の1以下の取付穴を複数個設け、この取付穴に前
記ボスの前記張出し部を挿入し固着した構成とした。The radio wave agitation blade has a boss made of a low-loss dielectric material, and the boss is provided with a plurality of protrusions. The radio wave agitation blade has a wavelength of about 4 minutes of the high frequency electromagnetic wave. 1. A plurality of mounting holes of 1 or less are provided, and the projecting portion of the boss is inserted into and fixed to the mounting holes.
【0028】また、前記電波攪拌羽根と前記ボスには外
れ防止の突起及び小孔を設けた構成とした。Further, the radio wave stirring blade and the boss are provided with a protrusion and a small hole for preventing the detachment.
【0029】また、前記駆動用モーターの出力軸は低損
失誘電体で作られ、断面は非円形に構成され、前記ボス
は凸部を有すると共に弾力性を有し、前記駆動用モータ
ーの出力軸と略平行のスリットを有し、前記駆動用モー
ターの出力軸の断面と同一形状の貫通孔を有し、前記駆
動用モーターの出力軸先端近傍に凹部を設け、前記ボス
の凸部がはまり込む構成とした。The output shaft of the drive motor is made of a low-loss dielectric material and has a non-circular cross section. The boss has a convex portion and elasticity, and the output shaft of the drive motor is Has a slit substantially parallel to the drive motor, has a through hole having the same shape as the cross section of the output shaft of the drive motor, provides a recess near the tip of the output shaft of the drive motor, and fits the projection of the boss. It was configured.
【0030】また、前記電波攪拌羽根は略扇形状を有す
る複数のスタラー羽根を有した構成とした。The radio wave agitating blade has a plurality of stirrer blades having a substantially fan shape.
【0031】また、前記電波攪拌羽根のスタラー羽根の
先端に、第2のスタラー羽根を設けた構成とした。A second stirrer blade is provided at the tip of the stirrer blade of the radio wave stirring blade.
【0032】[0032]
【作用】本発明は回転載置台と加熱室側面に電波攪拌羽
根を配置し、電波攪拌羽根の前面には給電口を設け、給
電口の形状を電波攪拌羽根の先端と、給電口の縁との距
離が異る形状つまり方形などの円以外の形状にすること
により高周波電磁波を電波攪拌羽根により上下左右に放
射し、回転載置台を回転することにより被加熱物の均一
度が飛躍的に向上する。According to the present invention, the electric wave agitating blade is arranged on the rotary mounting table and the side surface of the heating chamber, and the electric power feeding port is provided on the front surface of the electric wave agitating blade. The shape of the electric power feeding port is the tip of the electric wave agitating blade and the edge of the electric power feeding port. High-frequency electromagnetic waves are radiated vertically and horizontally by the radio wave agitating blades by making the shape different from each other, that is, a shape other than a circle such as a square, and by rotating the rotary mounting table, the uniformity of the heated object is dramatically improved. To do.
【0033】回転載置台が少しずれても給電口の下方に
当たるだけである。回転載置台の回転中心と電波攪拌羽
根の回転中心の中心線を略一致させることにより、回転
載置台の被加熱物に対しての電波攪拌羽根の効果が最も
大きくなる。Even if the rotary mounting table is slightly displaced, it only hits below the power supply port. By making the rotation center of the rotary mounting table and the center line of the rotation center of the radio wave stirring blades substantially coincide with each other, the effect of the radio wave stirring blades on the object to be heated of the rotary mounting table is maximized.
【0034】給電口カバーは加熱室内の食品カスや蒸気
の導波管の進入を防止すると共に被加熱物などが、電波
攪拌羽根に当たって変形したりすることがない。The power supply port cover prevents food scraps and steam from entering the waveguide in the heating chamber, and the object to be heated is not deformed by hitting the radio wave stirring blade.
【0035】また、カバーを硝子で構成することによ
り、電波攪拌羽根の回転状態が目で確認できる。Further, since the cover is made of glass, the rotating state of the radio wave stirring blade can be visually confirmed.
【0036】給電口カバーの外周端面部に弾性を有する
枠体で覆うことにより給電口カバーの封止性能が向上
し、枠体が給電口カバーより加熱室側に突出しているこ
とにより、回転載置台が直接給電口カバーに当たらない
し、万一当たっても枠体が緩衝材になり給電口カバーの
変形を防止している。By covering the outer peripheral end surface of the power supply port cover with an elastic frame, the sealing performance of the power supply port cover is improved, and since the frame body projects from the power supply port cover to the heating chamber side, it is rotatably mounted. The stand does not directly contact the power supply port cover, and even if it hits, the frame serves as a cushioning material to prevent deformation of the power supply port cover.
【0037】硝子の給電口カバーの表面に印刷すること
により、電波攪拌羽根の回転状態が良く見えると共に電
波攪拌羽根の不都合部分をかくすことができる。By printing on the surface of the glass power supply port cover, the rotating state of the radio wave agitating blade can be seen well and the inconvenient part of the radio wave agitating blade can be hidden.
【0038】駆動用モーターの回転軸をやや上目に向け
ることにより、回転軸のガタの為に、回転軸が下を向
き、回転軸に取り付けられた電波攪拌羽根が傾くのを防
止できる。By turning the rotary shaft of the drive motor slightly upward, it is possible to prevent the rotary shaft from facing downward and tilting the radio wave agitating blade attached to the rotary shaft due to backlash of the rotary shaft.
【0039】電波攪拌羽根室と駆動用モーターとの間に
空間を設けることにより加熱室の熱が駆動用モーターに
伝わるのを防ぐことが出来る。By providing a space between the radio wave stirring blade chamber and the drive motor, it is possible to prevent the heat in the heating chamber from being transferred to the drive motor.
【0040】導波管と電波攪拌羽根室を一体構成してい
るので簡単に加熱室と導波管が構成出来る。Since the waveguide and the radio wave stirring blade chamber are integrally configured, the heating chamber and the waveguide can be easily configured.
【0041】給電口は電波攪拌羽根よりも大きい構成な
ので給電口と電波攪拌羽根の隙間を有しこの隙間より高
周波電磁波が効率良く加熱室内に照射することが出来、
又電波攪拌羽根が加熱室内より簡単に組み込むことが出
来る。Since the power feed port is larger than the radio wave stirring blade, there is a gap between the power feed port and the radio wave stirring blade, and high frequency electromagnetic waves can be efficiently radiated into the heating chamber through this gap.
Further, the radio wave stirring blade can be easily installed in the heating chamber.
【0042】電波攪拌羽根室の電波攪拌羽根に対向する
部分に塗装を施しているので上記両者間の絶縁強度が上
がり両者間の高周波電磁波のスパーク(火花放電)を防
止することが出来る。又電波攪拌羽根の見ばえも塗装の
色により良くなる。Since the portion of the radio wave agitating blade chamber facing the radio wave agitating blade is coated, the insulation strength between the two is increased and the spark (spark discharge) of the high frequency electromagnetic wave between the two can be prevented. Also, the appearance of the radio wave stirring blade will be improved by the color of the coating.
【0043】ボスに張出し部を設け、電波攪拌羽根の取
付穴にこの張出し部を入れ少し回転することによりボス
と電波攪拌羽根に固着することが出来る。又取付穴が波
長の4分の1以下なのでこの取付穴で高周波電磁波によ
るスパークやボスの異常加熱を防止することができる。The boss can be fixed to the boss and the radio wave agitating blade by providing the boss with the radio wave agitating blade and inserting the projecting portion into the mounting hole of the radio wave agitating blade and rotating a little. Further, since the mounting hole has a quarter wavelength or less, the mounting hole can prevent sparks and abnormal heating of the boss due to high frequency electromagnetic waves.
【0044】さらにボスの小孔と電波攪拌羽根の突起が
かみ合うので外れることはない。ボスに設けたスリット
により、貫通口が少し大きくなるので加熱室側より駆動
用モーターの回転軸に簡単に押し込むだけで固着でき回
転軸の凹部とボスの凸部の為ボスが回転軸から抜けるこ
とはない。Further, since the small hole of the boss and the projection of the radio wave stirring blade are engaged with each other, they do not come off. The slit on the boss makes the through hole a little larger, so it can be fixed by simply pushing it into the rotary shaft of the drive motor from the heating chamber side, and the boss can be removed from the rotary shaft due to the concave part of the rotary shaft and the convex part of the boss. There is no.
【0045】電波攪拌羽根は略扇形状を有したスタラー
羽根を設けているのでスタラー羽根間の隙間も略扇形に
なる。この隙間より高周波電磁波が加熱室内に放射され
る。したがってこの隙間が回転するので高周波電磁波も
回転しながら加熱室内に放射し加熱室内の分布の均一化
を図ることが出来る。Since the radio wave stirring blade is provided with stirrer blades having a substantially fan shape, the gap between the stirrer blades is also substantially fan-shaped. High-frequency electromagnetic waves are radiated from this gap into the heating chamber. Therefore, since the gap rotates, the high frequency electromagnetic wave is also radiated into the heating chamber while rotating, and the distribution in the heating chamber can be made uniform.
【0046】スタラー羽根の先端には第2のスタラー羽
根が設けられているのでスタラー羽根間の放射効率を上
げると同時にスタラー羽根先端の電界も弱められスパー
クが防止できる。Since the second stirrer blades are provided at the tips of the stirrer blades, the radiation efficiency between the stirrer blades can be increased and at the same time the electric field at the tip of the stirrer blades can be weakened to prevent sparks.
【0047】[0047]
【実施例】以下、本発明の実施例を図面にもとづいて説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【0048】なお、本発明でいう加熱室側面とは、回転
載置台の面に垂直な加熱室の壁面をいう。本発明では前
記側面のいづれの面に給電口を設けても効果はほゞ同じ
であるが、最も実用化しやすい、後壁(ドアに相対する
面)に給電口を設けた場合につき説明する。The side surface of the heating chamber referred to in the present invention means the wall surface of the heating chamber perpendicular to the surface of the rotary mounting table. In the present invention, the effect is almost the same even if the power supply port is provided on any of the side surfaces, but the case where the power supply port is provided on the rear wall (the surface facing the door), which is the most practical, will be described.
【0049】図1は本発明に係る加熱調理器の水平断面
図である。加熱室1の底部には食品等をのせて回転する
回転載置台2が具備されており、加熱室後壁3を略水平
方向に延長した部分に高周波発生装置4が備えられ、加
熱室後壁3には略方形の給電口5となる開口が設けられ
ている。前記給電口5の近傍には、金属性電波攪拌羽根
6が設けられ、駆動用モーター7によって回転せしめら
れる。前記高周波発生装置4から出された高周波電磁波
は導波管8によって、電波攪拌羽根6の方に導かれ、攪
拌された後、前記給電口5から加熱室1内に放射され
る。前記給電口5部には、電波損失の少ない耐熱性にす
ぐれた、例えば硼硅酸ガラスのようなもので構成される
給電口カバー9を設け、食品カス等が電波攪拌羽根室1
0内に飛散するのを防止している。11はシリコンゴム
等で形成される枠体で、給電口カバー9の周囲にはめ込
み固定され、加熱室後壁3の給電口5に挿入固定せしめ
られ、シーリングの役目をするものである。又前記給電
口カバー9はヒーター加熱時には、加熱室1内の熱が電
波攪拌羽根室10内に逃げていかないようにする断熱の
役目も兼ねそなえている。又前記導波管8部分と、電波
攪拌羽根室10の隔壁12部分とは一体絞りで構成され
ている。13は加熱室1前面開口部に取付けられた開閉
自在なドアーである。FIG. 1 is a horizontal sectional view of a heating cooker according to the present invention. At the bottom of the heating chamber 1, there is provided a rotary mounting table 2 on which food or the like is placed to rotate, and a high frequency generator 4 is provided at a portion where the heating chamber rear wall 3 is extended in a substantially horizontal direction. 3 is provided with an opening serving as a substantially rectangular power supply port 5. A metallic radio wave stirring blade 6 is provided in the vicinity of the power supply port 5 and is rotated by a drive motor 7. The high-frequency electromagnetic wave emitted from the high-frequency generator 4 is guided to the radio wave stirring blade 6 by the waveguide 8 and stirred, and then radiated from the power supply port 5 into the heating chamber 1. The power supply port 5 is provided with a power supply port cover 9 which is made of, for example, borosilicate glass and has excellent heat resistance with little radio wave loss.
It is prevented from scattering within 0. Reference numeral 11 denotes a frame body made of silicon rubber or the like, which is fitted and fixed around the power supply port cover 9 and is inserted and fixed in the power supply port 5 of the heating chamber rear wall 3 to serve as a sealing member. Further, the power supply port cover 9 also serves as a heat insulation for preventing the heat in the heating chamber 1 from escaping into the radio wave stirring blade chamber 10 when the heater is heated. Further, the waveguide 8 portion and the partition wall 12 portion of the radio wave stirring blade chamber 10 are formed as an integrated diaphragm. Reference numeral 13 is a door that is attached to the front opening of the heating chamber 1 and can be opened and closed.
【0050】加熱室内で食品を加熱する場合、当然縦、
横、高さのすべてを均一に加熱する必要がある。回転載
置台2に載せられた食品は、加熱室内の高周波電磁波の
強弱の中を回転する為に、円周方向は均一に加熱される
が半径方向は加熱ムラが生じ易い。加熱室1後部の横に
取り付けられた高周波発生装置4からの高周波電磁波
は、導波管8を通り水平に後部の給電口5から加熱室1
に供給される。この時回転載置台2の加熱パターンは、
当然給電口5に近い部分の食品が強く加熱される為にハ
ッチングを施した様に加熱される。すなわち、加熱強度
は給電口から遠ざかるにしたがって弱くなる。この加熱
パターンは回転載置台2が回転した時は、食品の半径方
向の加熱ムラがなくなる加熱パターンであるが完全に半
径方向の加熱ムラがなくなるわけではない。電波攪拌羽
根6が回転することにより給電口5から高周波電磁波の
加熱室1への放射強度の分布状態が変化するにしたがっ
てパッチングを施した加熱強度のパターンを(回転に伴
って)変化する。故に半径方向の加熱ムラはほぼ均一に
なる。When heating food in the heating chamber, naturally,
It is necessary to heat the side and height uniformly. The food placed on the rotary mounting table 2 rotates in the intensity of high-frequency electromagnetic waves in the heating chamber, so that the food is uniformly heated in the circumferential direction, but uneven heating easily occurs in the radial direction. High-frequency electromagnetic waves from the high-frequency generator 4 mounted beside the rear part of the heating chamber 1 pass through the waveguide 8 and horizontally from the power supply port 5 at the rear part of the heating chamber 1.
Is supplied to. At this time, the heating pattern of the rotary mounting table 2 is
As a matter of course, the food near the power supply port 5 is heated strongly so that it is heated like hatching. That is, the heating strength becomes weaker as the distance from the power supply port increases. This heating pattern is a heating pattern in which the heating unevenness in the radial direction of the food is eliminated when the rotary mounting table 2 is rotated, but the heating unevenness in the radial direction is not completely eliminated. As the radio wave agitating blade 6 rotates, the patched heating intensity pattern changes (with rotation) as the distribution state of the radiation intensity of the high frequency electromagnetic wave from the power supply port 5 to the heating chamber 1 changes. Therefore, the uneven heating in the radial direction is almost uniform.
【0051】図2は図1の縦断面図で、14は上ヒータ
ー、15、16は夫々下ヒーターであり加熱室でオーブ
ン加熱も出来るようになっている。17は本発明に係る
駆動用モーター7の取付部で、前記電波攪拌羽根室壁1
2の一部を凸状に絞り、駆動用モーター7が電波攪拌羽
根室に密着するのを防止している。密着すると、ヒータ
ー14、15、16加熱時に加熱室1内から輻射される
熱と、電波攪拌羽根室壁12を通じてもたらされる伝導
熱とで駆動用モーター7の温度が上がり、内部ギヤ、ギ
ヤ用グリース等を耐熱仕様にしなければならずコストア
ップになる。又駆動用モーター7の上下部分に位置する
箇所の外箱に冷却用開口18、19を設ける。自然対流
の風が図中太い矢印の様に流れ従って駆動用モーター7
は冷却される。又絞り部17を設けることにより、駆動
用モーター7の固定用ビス20の先端が、電波攪拌羽根
6に近接しないため、導波管8内に供給される高周波電
磁波によるスパークの恐れもなくなる。FIG. 2 is a vertical sectional view of FIG. 1, in which 14 is an upper heater, and 15 and 16 are lower heaters, respectively, so that the oven can be heated in the heating chamber. Reference numeral 17 denotes a mounting portion of the drive motor 7 according to the present invention, which is the radio wave stirring blade chamber wall 1
A part of 2 is squeezed in a convex shape to prevent the drive motor 7 from coming into close contact with the radio wave stirring blade chamber. When they come into close contact with each other, the temperature of the drive motor 7 rises due to the heat radiated from the inside of the heating chamber 1 at the time of heating the heaters 14, 15 and 16 and the conduction heat provided through the wall 12 of the radio wave agitating blade, and the internal gear and the grease for the gear are increased. It is necessary to make the heat resistant specifications etc., which increases the cost. Further, cooling openings 18 and 19 are provided in the outer box located at the upper and lower portions of the drive motor 7. The wind of natural convection flows like the thick arrow in the figure, so the driving motor 7
Is cooled. Further, since the tip of the fixing screw 20 of the drive motor 7 does not come close to the radio wave stirring blade 6 by providing the throttle portion 17, there is no fear of sparks due to the high frequency electromagnetic wave supplied into the waveguide 8.
【0052】高周波電磁波は電波攪拌羽根6の回転によ
り水平方向からの高周波電磁波を電波攪拌羽根6により
加熱室1内に細い矢印のように上下にバランス良く配分
する。したがって牛乳の温めなどの高さのある負荷にお
いても上方が強く加熱されるということはなくきわめて
均一に加熱される。With respect to the high frequency electromagnetic waves, the high frequency electromagnetic waves from the horizontal direction are distributed by the radio wave stirring blades 6 in the heating chamber 1 vertically and in a well-balanced manner by the rotation of the radio wave stirring blades 6. Therefore, even under a high load such as warming milk, the upper part is not heated strongly but is heated very uniformly.
【0053】図3は図1の垂直横断面図を示すもので、
回転載置台2は陶器などの低損失誘電体で作られてお
り、被加熱物(図示せず)を載せられるようになってい
る。回転載置台2の下には回転載置台を回転させる為の
ターンテーブルモーター47を配置し、ターンテーブル
モーター47の回転軸は回転載置台2を回転する為のテ
ーブル48で連ながっている。FIG. 3 shows a vertical cross-sectional view of FIG.
The rotary mounting table 2 is made of a low-loss dielectric such as pottery, and is capable of mounting an object to be heated (not shown). A turntable motor 47 for rotating the rotary mounting table 2 is arranged under the rotary mounting table 2, and a rotation shaft of the turntable motor 47 is connected to a table 48 for rotating the rotary mounting table 2. .
【0054】導波管8は一端部分で広くなっていて、電
波攪拌羽根6が収納され電波攪拌羽根室10を形成して
いる。Fig.3では、給電口5には給電口カバーが取
付けられているが説明の為外した状態で説明する。The waveguide 8 is wide at one end, and the radio wave agitating blade 6 is housed therein to form a radio wave agitating blade chamber 10. Fig. In FIG. 3, a power supply port cover is attached to the power supply port 5, but the description will be given with the cover removed for the sake of explanation.
【0055】給電口5は電波攪拌羽根6より少し大きく
加熱室前面より電波攪拌羽根6が簡単に取り付けられる
と同時に、加熱室へ高周波電磁波を効率よく供給するた
めに高周波電磁波の波長の長さ以上の大きさを有してい
る。The power supply port 5 is slightly larger than the radio wave stirring blade 6, and the radio wave stirring blade 6 can be easily attached from the front of the heating chamber. At the same time, in order to efficiently supply the high frequency electromagnetic wave to the heating chamber, the length of the wavelength of the high frequency electromagnetic wave or more is required. Has a size of.
【0056】電波攪拌羽根6の外周は給電口5より小さ
いため、給電口5と電波攪拌羽根6との間に高周波電磁
波の通過する隙間が生じる。Since the outer circumference of the radio wave stirring blade 6 is smaller than the power supply port 5, a gap is formed between the power supply port 5 and the radio wave stirring blade 6 for passing high frequency electromagnetic waves.
【0057】電波攪拌羽根6は略扇形をした4枚のスタ
ラー羽根49を有しているので各スタラー羽根間の隙間
も略扇形形状となる。Since the radio wave agitating blade 6 has four substantially fan-shaped stirrer blades 49, the gap between the respective stirrer blades is also substantially fan-shaped.
【0058】給電口5は略正方形であり、正方形の各コ
ーナは少し円弧状になっている。高周波発生装置4から
の高周波電磁波は導波管8を通り電波攪拌羽根室10に
伝搬する。The power supply port 5 is substantially square, and each corner of the square is slightly arcuate. A high frequency electromagnetic wave from the high frequency generator 4 propagates through the waveguide 8 to the radio wave stirring blade chamber 10.
【0059】ここで電波攪拌羽根6の略扇形形状をした
隙間より加熱室内に矢印の方向に高周波電磁波が放射さ
れる。もちろんスタラー羽根49の外周部分と給電口5
の隙間の部分からも高周波電磁波が加熱室内に放射され
るが、隙間が狭いために略扇形状の隙間の方がはるかに
多くなる。Here, high frequency electromagnetic waves are radiated in the direction of the arrow into the heating chamber from the substantially fan-shaped gap of the radio wave stirring blade 6. Of course, the outer peripheral portion of the stirrer blade 49 and the power supply port 5
High-frequency electromagnetic waves are also radiated into the heating chamber from the gap portion, but the substantially fan-shaped gap is much larger because the gap is narrow.
【0060】略扇形形状の隙間からの高周波電磁波は図
3の矢印方向に放射される。ここで電波攪拌羽根6が回
転している為に加熱室の隅々にまで高周波電磁波が分散
される。The high frequency electromagnetic wave from the substantially fan-shaped gap is radiated in the direction of the arrow in FIG. Here, since the radio wave stirring blade 6 is rotating, the high frequency electromagnetic wave is dispersed in every corner of the heating chamber.
【0061】給電口5が円形の場合は、加熱室が直方体
なのでどうしても加熱室の隅に高周波電磁波が到達しに
くいために給電口5を略正方形の形状にすることにより
給電口5のコーナー部分からの高周波電磁波の放射が多
くなり、直方体の隅の角に迄高周波電磁波が到達するよ
うになり、加熱室全体への電波攪拌羽根6の放射の分散
効果が多くなり、被加熱物の均一度合が向上する。When the power feeding port 5 is circular, since the heating chamber is a rectangular parallelepiped, it is difficult for high frequency electromagnetic waves to reach the corners of the heating chamber. Radiation of the high frequency electromagnetic waves increases, and the high frequency electromagnetic waves reach the corners of the rectangular parallelepiped, and the effect of dispersing the radiation of the radio wave stirring blades 6 over the entire heating chamber increases, and the uniformity of the heated object is increased. improves.
【0062】略正方形の給電口5のコーナー部円弧は、
加熱室の隅への高周波電磁波放射度合の調整用であると
同時に、給電口カバー9を低損失誘電体の硝子などを成
形して作る場合、給電口カバー9の角が円弧状の方が溶
けた硝子が流れ易いため、給電口カバー9が成形し易
い。The arc of the corner portion of the substantially square power supply port 5 is
For adjusting the radiation degree of high frequency electromagnetic waves to the corners of the heating chamber, at the same time, when the power supply port cover 9 is made by molding glass of low-loss dielectric material, the corner of the power supply port cover 9 is more arc-shaped. Since the glass easily flows, the power supply port cover 9 is easily molded.
【0063】図4は図2の拡大図であり、21は駆動用
モーター7の回転軸で、回転軸21を貫通させるための
開口22からの電波漏洩を防止するため、4フッ化エチ
レンなどの耐熱樹脂で構成されている。回転軸21の先
端には、ボス23を介して電波攪拌羽根6が固定されて
いる。一般にモーターの回転軸は回転に支障のないよう
に、モーターの軸受(図示せず)との間にクリアランス
が設けられているが、熱膨張率が大きく、又成形精度も
出にくい樹脂で回転軸を構成する場合は、そのクリアラ
ンスも大きくガタが大きい。その様なものを水平に取付
けると、回転軸21の先端に重量物である金属性電波攪
拌羽根6が固定されているため、その重さで回転軸21
の先端が図中θ°で表わされるように下がる。すると電
波攪拌羽根6の下端と電波攪拌羽根室壁12との距離a
が水平状態の距離bよりも小さくなり、電波攪拌羽根6
先端で高周波電磁波による放電現象が起こり易くなる。
そこで本発明では駆動用モーター7の取付部17に傾き
を設け、回転軸21の下がり角度θ°分を補正し、電波
攪拌羽根6が電波攪拌羽根室10の壁12と平行になる
ように工夫している。FIG. 4 is an enlarged view of FIG. 2. Reference numeral 21 is a rotary shaft of the drive motor 7, and in order to prevent radio wave leakage from an opening 22 through which the rotary shaft 21 penetrates, ethylene tetrafluoride or the like is used. It is made of heat-resistant resin. A radio wave stirring blade 6 is fixed to the tip of the rotary shaft 21 via a boss 23. Generally, the rotation shaft of the motor has a clearance between it and the bearing (not shown) of the motor so that it does not interfere with the rotation, but the rotation shaft is made of resin that has a large coefficient of thermal expansion and is difficult to obtain molding accuracy. In case of constructing, the clearance is large and the backlash is large. When such a thing is mounted horizontally, since the metallic radio wave stirring blade 6 which is a heavy object is fixed to the tip of the rotary shaft 21, the weight of the rotary shaft 21
The tip of the arrow goes down as represented by θ ° in the figure. Then, the distance a between the lower end of the radio wave agitating blade 6 and the radio wave agitating blade chamber wall 12
Becomes smaller than the distance b in the horizontal state, and the radio wave stirring blade 6
A discharge phenomenon due to high-frequency electromagnetic waves easily occurs at the tip.
Therefore, in the present invention, the mounting portion 17 of the drive motor 7 is provided with an inclination to correct the descending angle θ of the rotary shaft 21 so that the radio wave stirring blade 6 is parallel to the wall 12 of the radio wave stirring blade chamber 10. is doing.
【0064】図5は本発明の導波管部等の構成を示すも
ので、24は導波管部8と、電波攪拌羽根室10とを、
金属性材料で一体絞り構成したもので、以降一体化導波
管と呼ぶ。25は加熱室後壁3の一部を伸長した部分
で、導波管の一面を形成し高周波発生装置4のアンテナ
挿入用穴26を設けている。上記一体化導波管24と、
加熱室後壁3をスポット溶接等で固着し、導波管8、電
波攪拌羽根室10を構成する。加熱室内の掃除をし易く
するために、加熱室内壁にフッ素塗装等を施すものは、
導波管と加熱室後壁をスポット溶接した状態で矢印方向
αから霧状になった塗料を吹きかける。上記一体化導波
管24と加熱室後壁3を固着したものを、加熱室上壁2
7、側壁28、28’、底壁29等と、カシメ、或いは
スポット溶接等で固着する。その際に、ハッチングで示
す30、31の部分が、一体化導波管24の内部に入っ
てしまい、カシメ、或いはスポット溶接不可能となり、
電波漏洩等の原因となるので、本発明では、一体化導波
管24に、カシメ用パンチ、若しくは溶接用電極が挿入
可能な孔32を設けている。前記穴32は、電波が洩れ
ないように、可能な限り最小穴にすると共に、外側に突
き出した形状とし、外側から電波防止用金具で塞ぐ必要
のない構成としている。FIG. 5 shows the construction of the waveguide portion and the like of the present invention. Reference numeral 24 denotes the waveguide portion 8 and the radio wave stirring blade chamber 10.
This is an integrated diaphragm made of a metallic material, and is hereinafter referred to as an integrated waveguide. Reference numeral 25 denotes a portion obtained by extending a part of the rear wall 3 of the heating chamber, which forms one surface of the waveguide and is provided with an antenna insertion hole 26 of the high frequency generator 4. The integrated waveguide 24,
The rear wall 3 of the heating chamber is fixed by spot welding or the like to form the waveguide 8 and the radio wave stirring blade chamber 10. In order to make it easier to clean the inside of the heating chamber, those that are coated with fluorine on the inside wall of the heating chamber are
In the state where the waveguide and the rear wall of the heating chamber are spot welded, atomized paint is sprayed from the direction α. The one in which the integrated waveguide 24 and the heating chamber rear wall 3 are fixed to each other is used as the heating chamber upper wall 2
7, the side walls 28, 28 ', the bottom wall 29, and the like are fixed to each other by caulking, spot welding, or the like. At that time, the hatched portions 30 and 31 enter the inside of the integrated waveguide 24, which makes caulking or spot welding impossible,
In the present invention, the integrated waveguide 24 is provided with a hole 32 into which a punch for caulking or a welding electrode can be inserted because it may cause electric wave leakage. The hole 32 has the smallest possible hole so that radio waves do not leak, and has a shape projecting to the outside so that it is not necessary to close it with a radio wave prevention metal fitting from the outside.
【0065】図6は給電口5の要部断面を示すもので、
低誘電損失のガラスからなる給電口カバー9は、端面周
囲を覆うように弾性のある枠体11により加熱室1の給
電口5に固着され取付けられており、枠体11は、給電
口カバー9より加熱室側に突出するような構成となって
いる。給電口カバー9は、加熱室1より見て凹形状をし
ており、加熱室1と反対側の表面には、低誘電損失のイ
ンクで印刷した印刷層40がほどこされている。これは
使用者が使用時に電波攪拌羽根6の回転を確認するため
である。FIG. 6 shows a cross section of the main part of the power supply port 5.
The power feeding port cover 9 made of glass having a low dielectric loss is fixedly attached to the power feeding port 5 of the heating chamber 1 by an elastic frame 11 so as to cover the periphery of the end face. It is configured so as to project further toward the heating chamber. The power supply port cover 9 has a concave shape when viewed from the heating chamber 1, and the surface opposite to the heating chamber 1 is covered with a printing layer 40 printed with low dielectric loss ink. This is for the user to confirm the rotation of the radio wave stirring blade 6 during use.
【0066】図7は図1の電波攪拌羽根部斜視図であ
る。電波攪拌羽根6には、取付穴41の長辺の長さが高
周波電磁波の波長の略4分の1以下の複数の取付け孔を
有している。FIG. 7 is a perspective view of the radio wave stirring blade portion of FIG. The radio wave agitating blade 6 has a plurality of mounting holes in which the length of the long side of the mounting hole 41 is approximately ¼ or less of the wavelength of the high frequency electromagnetic wave.
【0067】この取付け孔41の長辺の長さが高周波電
磁波の波長の4分の1以上だと加熱室の電波分布の性能
が悪くなるばかりか取付け孔41で高周波電磁波による
スパークが生じる可能性がある。If the length of the long side of the mounting hole 41 is 1/4 or more of the wavelength of the high frequency electromagnetic wave, not only the performance of the radio wave distribution in the heating chamber deteriorates, but also the mounting hole 41 may cause a spark by the high frequency electromagnetic wave. There is.
【0068】2個の取付け孔41にはボス23に設けた
2個の張出部42を入れ所定角度回転することにより電
波攪拌羽根6とボス23が固着される。ボス23の小孔
43は取付けた際、電波攪拌羽根6の突起44に入り外
れないようになっている。また、駆動用モーター7の回
転軸21とボス23との固定は、略小判型の断面を有す
る低損失誘電体で作られた回転軸21に、回転軸21と
略平行に入れたスリット45を有する低損失誘電体で構
成されたボス23を挿入することにより固定される。The radio wave stirring blade 6 and the boss 23 are fixed to each other by inserting the two overhanging portions 42 provided on the boss 23 into the two mounting holes 41 and rotating them by a predetermined angle. When the small hole 43 of the boss 23 is attached, the small hole 43 of the boss 23 does not come in and out of the projection 44 of the radio wave stirring blade 6. Further, the rotation shaft 21 of the drive motor 7 and the boss 23 are fixed to each other by providing the rotation shaft 21 made of a low-loss dielectric material having a substantially oval cross section with a slit 45 formed substantially parallel to the rotation shaft 21. It is fixed by inserting the boss 23 made of the low loss dielectric material.
【0069】51はスタラー羽根49の略扇状の両側先
端部に設けられた第2のスタラー羽根であり、高周波電
磁波がスタラー羽根間の隙間より放射する効率を上げる
と共に、スタラー羽根49先端での高周波電磁波による
スパークの防止する役目をしている。Reference numeral 51 is a second stirrer blade provided at both end portions of the stirrer blade 49 in a substantially fan-like shape. The second stirrer blade 51 enhances the efficiency of radiation of high frequency electromagnetic waves from the gap between the stirrer blades 49 and the high frequency at the tip of the stirrer blade 49. It plays the role of preventing sparks caused by electromagnetic waves.
【0070】図8は図7の組立て後の断面図である。回
転軸21とボス23のかん合部にはボス23に凸部46
が設けられ、回転軸21の対応する凹部に合致してボス
23が抜けないようになっている。FIG. 8 is a sectional view after assembly of FIG. At the mating portion of the rotary shaft 21 and the boss 23, the convex portion 46 is formed on the boss 23.
Are provided so that the bosses 23 do not come off in conformity with the corresponding recesses of the rotary shaft 21.
【0071】以上の説明により、本発明は、回転載置台
と加熱室側面に電波攪拌羽根を配置し、電波攪拌羽根の
前面には給電口を設け、給電口の側方からの高周波電磁
波を、電波攪拌羽根により加熱室内に上下左右に放射
し、回転載置台が回転することにより被加熱物の均一度
が飛躍的に向上する。つまり引用例1(特公昭60−2
5875)では給電口が加熱室上部にあるため、被加熱
物の上部が強く加熱されるという垂直分布に不均一さが
あり、引用例2(USP2748239)では加熱室後
部に給電口があるため、加熱室後部が強く加熱されると
いう平面分布に不均一さが生じる傾向であった。さらに
引用例3(USP4136271)は引用例1と同様に
放射するアンテナが上部にあるため上が強く加熱される
という欠点があった。As described above, according to the present invention, the radio wave agitating blade is arranged on the rotary mounting table and the side surface of the heating chamber, the electric power feeding port is provided on the front surface of the radio wave agitating blade, and the high frequency electromagnetic wave from the side of the power feeding port is provided. The radio wave agitating blades radiate vertically and horizontally into the heating chamber, and the rotation of the rotary mounting table dramatically improves the uniformity of the object to be heated. That is, Cited Example 1 (Japanese Patent Publication No. 60-2)
In 5875), since the power supply port is located in the upper part of the heating chamber, there is non-uniformity in the vertical distribution that the upper part of the object to be heated is strongly heated, and in Reference Example 2 (USP2748239), there is a power supply port in the rear part of the heating chamber. There was a tendency for unevenness to occur in the plane distribution in which the rear part of the heating chamber was heated strongly. Further, in the reference example 3 (USP4136271), there is a drawback that the upper part is heated strongly because the antenna for radiating is on the upper part like the reference example 1.
【0072】それに比べ本願は水平分布、垂直分布共に
均一度が良いため冷凍食品の解凍が失敗なくでき、又牛
乳などをコップなどで温める場合も上部が熱すぎること
はない。On the other hand, in the present application, the horizontal distribution and the vertical distribution have good uniformity, so that the frozen food can be thawed without failure, and the upper part is not too hot when milk or the like is heated with a cup or the like.
【0073】又加熱室の側面より直接被加熱物に高周波
電磁波が照射するので加熱室の寸法が少し歪んでも均一
性能に影響が少ない。Further, since the high-frequency electromagnetic wave is directly applied to the object to be heated from the side surface of the heating chamber, even if the size of the heating chamber is slightly distorted, the uniform performance is little affected.
【0074】給電口の形状を略正方形として実施例では
説明したが、生産上の点を考慮すると略正方形である場
合が優れているが、これに限定されるものでなく、円形
以外の形状であればどんな形状でもよいのはもちろんで
ある。Although the power supply port has been described in the embodiment as having a substantially square shape, it is preferable that the shape of the power supply port is a substantially square shape in view of production. However, the shape is not limited to this, and a shape other than a circular shape is preferable. Of course, any shape is acceptable.
【0075】また給電口の下側端面を回転載置台よりも
上に位置したことにより回転載置台を誤って加熱室の奥
まで入れた際も、枠体に当たり給電口カバーが破損する
ことはない。Further, since the lower end surface of the power supply port is located above the rotary mounting table, even when the rotary mounting table is mistakenly inserted deep into the heating chamber, the power supply port cover is not damaged by hitting the frame. .
【0076】回転載置台の回転軸心挿入部分と電波攪拌
羽根の回転軸線が略直角に交叉しているために、回転載
置台の回転軸線に対して略対称に高周波電磁波が放射さ
れるので、回転載置台が回転した時、回転載置台の中心
部と周囲の加熱の差が少ない。Since the rotary shaft center insertion portion of the rotary mounting table and the rotary axis of the radio wave stirring blade intersect at a substantially right angle, high-frequency electromagnetic waves are radiated substantially symmetrically with respect to the rotary axis of the rotary mounting table. When the rotary mounting table rotates, the difference in heating between the center of the rotary mounting table and the surroundings is small.
【0077】又、回転載置台の回転数と、電波攪拌羽根
の回転数が違っているために回転載置台のどの位置に負
荷をおいても電波攪拌羽根からの高周波電磁波の放射状
態と回転載置台の相対関係が異なるため垂直、水平の加
熱の均一度が負荷の位置に関係なく同じで均一である。Further, since the rotational speed of the rotary mounting table and the rotational speed of the radio wave agitating blade are different from each other, the radiation state of the high frequency electromagnetic wave from the radio wave agitating blade and the rotary mounting are placed at any position of the rotary mounting table. Since the relative relations of the mounts are different, the vertical and horizontal heating uniformity is the same regardless of the position of the load.
【0078】又駆動用モーターの回転軸のガタで発生す
る電波攪拌羽根の傾きを補正する構成なので、電波攪拌
羽根半径方向の放電現象をおさえることが出来、且つ、
電波攪拌羽根の傾きによる攪拌性能の低下も防止出来
る。Further, since the inclination of the electric wave stirring blade caused by the looseness of the rotating shaft of the drive motor is corrected, the discharge phenomenon in the radial direction of the electric wave stirring blade can be suppressed, and
It is also possible to prevent deterioration of the stirring performance due to the inclination of the radio wave stirring blade.
【0079】さらに電波攪拌羽根室、導波管等を加熱室
側面に設ける構造なので、ヒーター付高周波加熱装置に
おいても、ヒーター構成に制約を受けることなく、均一
な電波加熱を提供する高周波加熱装置が実現出来、且
つ、給電口カバー、枠体、駆動用モーターの取付方法等
の工夫で、ヒーター加熱時の熱による部品の耐熱仕様対
策のためのコストアップを防止出来る。Furthermore, since the structure is such that the radio wave stirring blade chamber, the waveguide, etc. are provided on the side surface of the heating chamber, even in the high frequency heating device with a heater, a high frequency heating device that provides uniform radio wave heating is not restricted by the heater configuration. This can be realized, and by devising the method of attaching the power supply port cover, frame, drive motor, etc., it is possible to prevent cost increase due to heat resistance specifications of parts due to heat when heating the heater.
【0080】さらに導波管と電波攪拌羽根室とを一体絞
り等で構成し、且つ、高周波発生装置取付部も、加熱室
後壁の一部を伸長するだけの簡単な構成で、更に導波管
にカシメ、或いはスポット溶接用のパンチ、電極棒が入
る穴を備えているため、加熱室の組立加工も容易で、全
体に簡単に安価に構成できる。Furthermore, the waveguide and the radio wave agitating blade chamber are formed as an integral diaphragm, and the high-frequency generator mounting portion has a simple structure in which only a part of the rear wall of the heating chamber is extended. Since the pipe is provided with caulking, punches for spot welding, and holes into which the electrode rods are inserted, the heating chamber can be easily assembled, and the whole structure can be simply and inexpensively constructed.
【0081】さらに電波攪拌羽根の大きさよりも給電口
を同程度若しくはそれ以上に大きくすることにより、電
波攪拌羽根の駆動モーターへの取付けが、加熱室側から
行えるため、一体化導波管の形状が簡単になる。加熱室
側からの取付けが不可の場合は、あらかじめ、一体化導
波管に駆動モーターと電波攪拌羽根を固定したのち、加
熱室後壁にネジ止めで取り付ける構成、或いは一体化導
波管の駆動モーター取付部分が電波攪拌羽根ごと取り外
せるようなフタ構成等になるために、ネジ固定の場合
は、何れも20mm〜30mmピッチで固定しなければ電波
漏洩の問題が発生するため、何れの方式においても多数
のネジ固定が必要となり、外観、組立性の悪いものとな
る。Further, by enlarging the power feeding port to the same size or larger than the size of the radio wave agitating blade, the radio wave agitating blade can be attached to the drive motor from the side of the heating chamber. Will be easier. If it cannot be installed from the heating chamber side, the drive motor and the radio wave agitating blade are fixed to the integrated waveguide in advance, and then attached to the rear wall of the heating chamber with screws, or the integrated waveguide is driven. Since the motor mounting part has a lid configuration that can be removed together with the radio wave agitation blade, when fixing with screws, there is a problem of radio wave leakage unless they are fixed with a pitch of 20 mm to 30 mm. Many screws must be fixed, resulting in poor appearance and assembly.
【0082】一般に、ヒーター付高周波加熱装置の場
合、加熱室内の掃除のし易さを提供するため、加熱室壁
内側にフッ素塗装等の耐熱塗装を施すことが多いが、本
発明のように給電口を電波攪拌羽根よりも大きく構成す
ることにより、例えば一体化導波管と加熱室後壁とをス
ポット溶接した後、塗装をすれば、吹きつけ塗装の場合
でも、前記給電口より塗料が中に入り、電波攪拌羽根に
対向する電波攪拌羽根室壁が塗装されるため、絶縁皮膜
が形成され、電波攪拌羽根のスパークをおさえる効果も
発揮する。Generally, in the case of a high-frequency heating device with a heater, a heat-resistant coating such as fluorine coating is often applied to the inside of the heating chamber wall in order to provide easy cleaning of the heating chamber. By making the mouth larger than the radio wave agitating blade, for example, by spot welding the integrated waveguide and the rear wall of the heating chamber and then painting, even if spray painting, the paint will not come out from the power feeding port. Then, since the wall of the radio wave agitating blade chamber facing the radio wave agitating blade is painted, an insulating film is formed and the effect of suppressing the spark of the radio wave agitating blade is exerted.
【0083】さらに加熱室の給電口を強固なガラスの給
電口カバーで保護しているため、電波攪拌羽根の変形を
防止することが出来る。また給電口カバーは端面周囲を
弾性のある枠体で給電口カバーより突出するように覆
い、なおかつ給電口カバーの形状を凹形状にして加熱室
の給電口に固着し取り付けられているため回転載置台等
を誤って当てた場合でも枠体で保護し衝撃をも吸収して
くれる。また給電口カバーの表面に低誘電損失のインク
で印刷をほどこしているため、使用者が故障で電波攪拌
羽根が停止した場合すぐに発見できる。Furthermore, since the power supply port of the heating chamber is protected by the strong glass power supply port cover, it is possible to prevent the deformation of the radio wave stirring blade. Also, the power supply port cover is covered with an elastic frame so as to project from the power supply port cover, and the power supply port cover has a concave shape and is fixedly attached to the power supply port of the heating chamber so that it is mounted by rotation. Even if you accidentally hit the table, it will be protected by the frame and absorb the shock. Further, since the ink with low dielectric loss is printed on the surface of the power supply port cover, it can be immediately found when the user stops the radio wave stirring blade due to a failure.
【0084】なお給電口カバーはガラスに限らず陶器、
磁器などで作っても同様の効果が得られるのは言うまで
もない。The power supply port cover is not limited to glass, but ceramics,
Needless to say, the same effect can be obtained by using porcelain.
【0085】また給電口カバー端面周囲に弾性のある枠
体を介して取り付けているため、ガラスの寸法バラツキ
を吸収し安定した作業が行える。Further, since it is attached around the end face of the power supply port cover via the elastic frame, it is possible to absorb the dimensional variation of the glass and perform stable work.
【0086】給電口カバーを枠体を介して加熱室の給電
口に固着させ取付けているため、シール性があり食品カ
スや蒸気の侵入を防ぎ、駆動用モーターなどの熱や蒸気
などによる絶縁劣化を防ぎ錆の発生も防止できる。Since the power feed port cover is fixedly attached to the power feed port of the heating chamber through the frame, it has a sealing property and prevents food dust and steam from entering and insulation deterioration due to heat and steam of the drive motor and the like. It also prevents the occurrence of rust.
【0087】さらに電波攪拌羽根に高周波電磁波の波長
の略4分の1以下の複数の取付け孔を設け、ボスに設け
た複数の張出し部を挿入し固着しているので、電波攪拌
羽根の攪拌効果を悪くしないし、この取付け穴での高周
波電磁波によるスパークが皆無になる。また電波攪拌羽
根とボスが簡単に取付け出来、しかも部品点数が少いの
で安価であり組立てが容易である。Further, the radio wave stirring blade is provided with a plurality of mounting holes each having a wavelength of about a quarter or less of the wavelength of the high frequency electromagnetic wave, and a plurality of overhanging portions provided on the boss are inserted and fixed. Does not deteriorate and there is no spark due to high frequency electromagnetic waves in this mounting hole. In addition, the radio wave stirring blade and the boss can be easily attached, and the number of parts is small, so that it is inexpensive and easy to assemble.
【0088】ボスと駆動用モーターの出力軸の固定にお
いてはボスにスリットを設け、ボスの弾力により回転軸
に取り付けるので簡単に回転軸の方向より取り付けるこ
とが出来る。When fixing the output shaft of the driving motor to the boss, a slit is provided in the boss and the boss is attached to the rotary shaft by the elastic force of the boss, so that the boss can be easily attached from the direction of the rotary shaft.
【0089】ボスの凸部46が回転軸の凹部と合ってい
るのでボスに応力がかかっていない。したがって加熱室
内をヒーターで温度を上げてもボスが変形することはな
く、又ボスが抜け落ちることもない。Since the convex portion 46 of the boss is aligned with the concave portion of the rotary shaft, no stress is applied to the boss. Therefore, even if the temperature in the heating chamber is raised by the heater, the boss does not deform and the boss does not fall out.
【0090】以上説明したように本発明によれば加熱室
の底面に回転載置台を設け、加熱室側方に給電口を配置
し、この給電口の側方より高周波電磁波を供給し、給電
口近傍に電波攪拌羽根を設けることにより、種々の食品
の加熱に対して均一な加熱状態が得られる。たとえば牛
乳の温めならば、上部と下部の温度上昇の差が少く、平
面的な食品の加熱においても中心と周囲の加熱差が少
い。又冷凍食品の解凍においても均一に解凍できるが特
に頂点や辺などが異常に加熱されて煮えることなく5℃
程度にムラなく解凍できる。As described above, according to the present invention, the rotary mounting table is provided on the bottom surface of the heating chamber, the power feeding port is arranged on the side of the heating chamber, and the high frequency electromagnetic wave is supplied from the side of the power feeding port. By providing a radio wave stirring blade in the vicinity, a uniform heating state can be obtained for heating various foods. For example, when warming milk, the difference in temperature rise between the upper part and the lower part is small, and the difference in heating between the center and the periphery is small even when heating flat food. In addition, even when thawing frozen foods, it can be thawed uniformly, but especially at the vertices and edges because it is abnormally heated and is not boiled
Can be thawed without unevenness.
【0091】[0091]
【発明の効果】庫内の均一度が飛躍的に向上したので均
一度性能が要求される肉や魚などの冷凍食品が煮えや氷
のままの状態がなく均一に常温迄解凍出来る。又牛乳な
どを温める場合など容器の上部ばかり熱くなることはな
い。又被加熱物を回転載置台の中心に置いても周囲に置
いても分布が良いので出来ばえに差が出ない。又給電口
が略正方形のため加熱室の上下隅々迄高周波電磁波がゆ
きわたる。EFFECTS OF THE INVENTION Since the homogeneity of the inside of the container has been dramatically improved, frozen foods such as meat and fish, which are required to have homogeneity performance, can be thawed uniformly to room temperature without being boiled or frozen. Also, when heating milk etc., the upper part of the container does not become hot. Also, there is no difference in the finished product because the distribution is good regardless of whether the object to be heated is placed at the center of the rotary mounting table or around it. Moreover, since the power supply port is approximately square, high-frequency electromagnetic waves reach the upper and lower corners of the heating chamber.
【0092】回転載置台が少しずれても給電口部分に当
たらないので、電波攪拌羽根を傷つけたり変形させたり
することはないので分布性能が簡単に悪くならない。Even if the rotary mounting table is slightly displaced, it does not hit the power supply port portion, so that the radio wave stirring blade is not damaged or deformed, so that the distribution performance is not easily deteriorated.
【0093】回転載置台の回転中心と電波攪拌羽根の回
転中心の延長線が一致しているので電波攪拌羽根の攪拌
効果が回転載置台に対して大きい。Since the extension lines of the rotation center of the rotary mounting table and the rotation center of the radio wave stirring blade coincide with each other, the stirring effect of the radio wave stirring blade is greater than that of the rotary mounting table.
【0094】給電口カバーにより被加熱物が電波攪拌羽
根に当たらないし、食品かすが電波攪拌羽根に付着し、
加熱されて燃えたりしないのできわめて安全で信頼性が
高い。The object to be heated does not hit the radio wave stirring blade due to the power supply port cover, and the food waste adheres to the radio wave stirring blade,
It is extremely safe and reliable because it does not burn when heated.
【0095】給電口カバーが硝子なので電波攪拌羽根の
回転状態が良く確認出来視覚効果があると共に万一停止
した時簡単に故障が発見出来、調理などの加熱の失敗を
防ぐことが出来る。Since the power supply port cover is made of glass, the rotation state of the radio wave agitating blade can be confirmed well, and there is a visual effect, and a failure can easily be found when stopped, and failure of heating such as cooking can be prevented.
【0096】枠体は被加熱物や回転載置台が直接給電口
カバーに当たるのを防止し万一当たっても給電口カバー
の衝撃を弱めることが出来る。The frame body prevents the object to be heated or the rotary mounting table from directly hitting the power feed port cover, and even if it hits, the impact of the power feed port cover can be weakened.
【0097】給電口カバーの一部の印刷により視覚効果
を上げ電波攪拌羽根の不都合部分をかくすことが出来見
ばえが良くなり商品価値が向上する。By printing a part of the power supply port cover, the visual effect can be improved and the inconvenient part of the radio wave agitation blade can be hidden so that the appearance is improved and the commercial value is improved.
【0098】駆動用モーターをやや上向きに取り付ける
ことにより電波攪拌羽根が傾かないので分布の均一化性
能が安定し電波攪拌羽根と電波攪拌羽根室壁との間の距
離も上下同一となるのでスパークなどが防止出来信頼性
が高くなる。By mounting the drive motor slightly upward, the radio wave agitating blades do not tilt so that the uniform distribution performance is stable and the distance between the radio wave agitating blades and the radio wave agitating blade chamber wall is the same vertically, so sparking etc. Can be prevented and reliability is increased.
【0099】電波攪拌羽根室と駆動用モーターの隙間の
為駆動用モーターの耐熱性を上げる必要がないので、駆
動用モーターの軸受けやグリースは安価なものを使用出
来、コスト高にならない。Since it is not necessary to improve the heat resistance of the drive motor due to the gap between the radio wave stirring blade chamber and the drive motor, inexpensive bearings and grease can be used for the drive motor, and the cost does not increase.
【0100】加熱室と導波管の組立ては簡単である。給
電口を加熱室後壁に設け給電口は電波攪拌羽根より大き
いので放射効率も良く又電波攪拌羽根を駆動用モーター
に固着する際加熱室前面より簡単に組みつけられる。Assembling the heating chamber and the waveguide is simple. Since the power supply port is provided on the rear wall of the heating chamber and the power supply port is larger than the radio wave stirring blade, the radiation efficiency is good, and when the radio wave stirring blade is fixed to the drive motor, it can be easily assembled from the front surface of the heating chamber.
【0101】電波攪拌羽根室壁の部分に塗装を施してい
るので電波攪拌羽根との絶縁性能が上がり両者間のスパ
ークを防止でき加熱室が空になった時でも信頼性が確保
できる。又電波攪拌羽根の見ばえも良い。Since the wall of the radio wave agitating blade chamber is coated, the insulation performance from the radio wave agitating blade is improved, the spark between the two can be prevented, and the reliability can be secured even when the heating chamber becomes empty. The appearance of the radio wave stirring blade is also good.
【0102】ボスと電波攪拌羽根が簡単に固着できると
共に固着の為の取付穴が高周波電磁波の波長の4分の1
以下なのでこの部分でのスパークを防止しボスが溶けた
り燃焼することはなく信頼性が高い。The boss and the radio wave agitating blade can be easily fixed to each other, and the mounting hole for fixing the boss is one quarter of the wavelength of the high frequency electromagnetic wave.
Since it is below, sparks at this part are prevented and the boss does not melt or burn, so it is highly reliable.
【0103】ボスと電波攪拌羽根は外れることはない。
ボスと駆動用モーターの回転軸と簡単に固着できるので
組立てが簡単である。The boss and the radio wave stirring blade do not come off.
It can be easily assembled because it can be easily fixed to the boss and the rotary shaft of the drive motor.
【0104】電波攪拌羽根は複数の略扇形のスタラー羽
根を有しているので、扇形の隙間より高周波電磁波が加
熱室に向かって回転しながら放射されるので加熱室内の
分布が均一になり解凍なども煮えたり氷のままの状態が
残らず常温まで均一に解凍出来る。また、牛乳などの背
の高い被加熱物を温める場合も上下の温度差が少い。Since the radio wave agitating blade has a plurality of substantially fan-shaped stirrer blades, high-frequency electromagnetic waves are radiated from the fan-shaped gap while rotating toward the heating chamber, so that the distribution in the heating chamber becomes uniform and thawing occurs. Even if it is boiled or left as ice, it can be uniformly thawed to room temperature. Also, when heating a tall heated object such as milk, the temperature difference between the upper and lower sides is small.
【0105】スタラー羽根の先端に第2のスタラー羽根
を有しているので扇形の隙間からの高周波電磁波の放射
が効率良く行えるので出力のロスが少ない。また、スタ
ラー羽根先端での異常電界集中によるスパークを防止す
ることが出来る。Since the second stirrer blade is provided at the tip of the stirrer blade, the high-frequency electromagnetic wave can be efficiently radiated from the fan-shaped gap, and the output loss is small. Further, it is possible to prevent sparks due to abnormal electric field concentration at the tips of the stirrer blades.
【図1】本発明の一実施例の加熱調理器の水平断面図FIG. 1 is a horizontal sectional view of a heating cooker according to an embodiment of the present invention.
【図2】同加熱調理器の側面断面図FIG. 2 is a side sectional view of the heating cooker.
【図3】同加熱調理器の正面垂直断面図FIG. 3 is a front vertical sectional view of the heating cooker.
【図4】同加熱調理器の駆動モーター取付部を示す側面
図FIG. 4 is a side view showing a drive motor mounting portion of the heating cooker.
【図5】同加熱調理器の導波管および加熱室後壁部の斜
視図FIG. 5 is a perspective view of a waveguide and a heating chamber rear wall of the heating cooker.
【図6】同加熱調理器の給電口カバーの斜視図FIG. 6 is a perspective view of a power supply port cover of the heating cooker.
【図7】同加熱調理器の電波攪拌羽根の斜視図FIG. 7 is a perspective view of a radio wave stirring blade of the heating cooker.
【図8】同加熱調理器の電波攪拌羽根の組立後断面図FIG. 8 is a sectional view of the electric wave stirring blade of the cooking device after assembly.
【図9】従来の加熱調理器の断面図FIG. 9 is a sectional view of a conventional heating cooker.
1 加熱室 2 回転載置台 3 後壁 4 高周波発生装置 5 給電口 6 電波攪拌羽根 7 駆動用モータ 8 導波管 9 給電口カバー 10 電波攪拌羽根室 11 枠体 12 電波攪拌羽根室壁 21 回転軸 22 開口 23 ボス 40 印刷層 41 取付穴 42 張出し部 43 小孔 44 突起 45 スリット 46 凸部 49 スタラー羽根 51 第2のスタラー羽根 DESCRIPTION OF SYMBOLS 1 Heating chamber 2 Rotating mounting table 3 Rear wall 4 High frequency generator 5 Power supply port 6 Radio wave stirring blade 7 Drive motor 8 Waveguide 9 Power supply port cover 10 Radio wave stirring blade chamber 11 Frame 12 Radio wave stirring blade chamber wall 21 Rotating shaft 22 Opening 23 Boss 40 Printed layer 41 Mounting hole 42 Overhanging part 43 Small hole 44 Protrusion 45 Slit 46 Convex part 49 Stirrer blade 51 Second stirrer blade
───────────────────────────────────────────────────── フロントページの続き (31)優先権主張番号 特願平4−140238 (32)優先日 平4(1992)6月1日 (33)優先権主張国 日本(JP) (31)優先権主張番号 特願平4−140239 (32)優先日 平4(1992)6月1日 (33)優先権主張国 日本(JP) (31)優先権主張番号 特願平4−164484 (32)優先日 平4(1992)6月23日 (33)優先権主張国 日本(JP) (72)発明者 秋吉 光夫 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Priority claim number Japanese Patent Application No. 4-140238 (32) Priority date Hei 4 (1992) June 1 (33) Country of priority claim Japan (JP) (31) Priority Claim No. Japanese Patent Application No. 4-140239 (32) Priority Date No. 4 (1992) June 1 (33) Country of priority claim Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-164484 (32) Priority Hihei 4 (1992) June 23 (33) Priority claiming country Japan (JP) (72) Inventor Mitsuo Akiyoshi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (18)
高周波電磁波を発生する高周波発生装置と、前記高周波
発生装置の前記高周波電磁波を前記加熱室に導く導波管
と、前記被加熱物を支持して、これと共に回転する回転
載置台と、前記加熱室内の高周波電磁波を攪拌する電波
攪拌羽根を備え、前記導波管の給電口は前記加熱室側面
に配置し、前記給電口に対向して、前記導波管内に前記
電波攪拌羽根を設け、前記給電口の開口周縁部と前記電
波攪拌羽根の外周との距離が周縁部の位置によって異な
る形状とした加熱調理器。1. A heating chamber for heating an object to be heated in the body,
A high-frequency generator that generates high-frequency electromagnetic waves, a waveguide that guides the high-frequency electromagnetic waves of the high-frequency generator to the heating chamber, a rotary mounting table that supports the object to be heated and rotates together with the object, and the heating chamber. A radio wave agitating blade for agitating the high frequency electromagnetic wave, the power feeding port of the waveguide is disposed on the side surface of the heating chamber, and the radio wave agitating blade is provided inside the waveguide so as to face the power feeding port. A heating cooker having a shape in which the distance between the peripheral edge of the mouth opening and the outer periphery of the radio wave stirring blade varies depending on the position of the peripheral edge.
前記回転載置台より上に位置した請求項1記載の加熱調
理器。2. The lower end of the opening peripheral portion of the power supply port is
The cooking device according to claim 1, wherein the heating cooker is positioned above the rotary mounting table.
拌羽根の回転軸線は略直角に交叉する構成とした請求項
1記載の加熱調理器。3. The heating cooker according to claim 1, wherein the rotation axis of the rotary mounting table and the rotation axis of the radio wave agitating blade intersect at a substantially right angle.
載置台の回転数と違った回転数で回転する構成とした請
求項1記載の加熱調理器。4. The heating cooker according to claim 1, wherein the electric wave agitating blade is rotated at a rotational speed different from that of the rotary mounting table.
電口カバーを設けた請求項1記載の加熱調理器。5. The heating cooker according to claim 1, wherein the power feeding port is provided with a power feeding port cover made of a low-loss dielectric.
構成した請求項5記載の加熱調理器。6. The cooking device according to claim 5, wherein the power supply port cover is made of glass having a low dielectric loss.
損失の弾性を有する枠体で覆い、前記枠体は前記給電口
カバーより前記加熱室側に突出した構成の請求項5記載
の加熱調理器。7. The heating according to claim 5, wherein the outer peripheral end surface of the power feeding port cover is covered with a frame body having elasticity with a low dielectric loss, and the frame body projects from the power feeding port cover toward the heating chamber. Cooking device.
インクで印刷した印刷層を有する請求項5記載の加熱調
理器。8. The cooking device according to claim 5, further comprising a printing layer printed with low dielectric loss ink on the surface of the power supply port cover.
する駆動用モーターで回転する構成とし、前記駆動用モ
ーターの回転軸を水平方向よりやや上目に傾くように固
着した請求項1記載の加熱調理器。9. The radio wave stirring blade is configured to rotate by a drive motor having a play in a rotation shaft portion, and the rotation shaft of the drive motor is fixed so as to incline slightly above the horizontal direction. Cooking device.
する電波攪拌羽根室を有し、前記駆動用モーターの取付
部となる前記電波攪拌羽根室壁の一部に凸部を設け、前
記駆動用モーターと、前記攪拌羽根室との間に隙間が出
来るように構成した請求項9記載の加熱調理器。10. The wave guide has a radio wave agitation blade chamber for accommodating the radio wave agitation blade, and a projection is provided on a part of a wall of the radio wave agitation blade chamber to be a mounting portion of the drive motor. The heating cooker according to claim 9, wherein a gap is formed between the drive motor and the stirring blade chamber.
一体構成とし、前記加熱室側壁と対向する前記電波攪拌
羽根室に前記給電口を設けた請求項9記載の加熱調理
器。11. The heating cooker according to claim 9, wherein the waveguide and the radio wave agitating blade chamber are integrally configured, and the electric power feeding port is provided in the radio wave agitating blade chamber facing the heating chamber side wall.
け、前記給電口は前記電波攪拌羽根よりも大きくした請
求項9記載の加熱調理器。12. The heating cooker according to claim 9, wherein the power supply port is provided on a rear wall of the heating chamber wall, and the power supply port is larger than the radio wave stirring blade.
攪拌羽根室の部分に塗装を施した請求項9記載の加熱調
理器。13. The heating cooker according to claim 9, wherein coating is applied to a portion of the radio wave agitation blade chamber facing the radio wave agitation blade.
作られたボスを有し、前記ボスは複数個の張出し部を設
け、前記電波攪拌羽根には前記高周波電磁波の波長の略
4分の1以下の取付穴を複数個設け、この取付穴に前記
ボスの前記張出し部を挿入し固着した請求項9記載の加
熱調理器。14. The radio wave agitation blade has a boss made of a low-loss dielectric, the boss is provided with a plurality of overhangs, and the radio wave agitation blade has a wavelength of about 4 minutes of the high frequency electromagnetic wave. 10. The heating cooker according to claim 9, wherein a plurality of mounting holes of 1 or less are provided, and the projecting portion of the boss is inserted into and fixed to the mounting holes.
防止の突起及び小孔を設けた請求項14記載の加熱調理
器。15. The cooking device according to claim 14, wherein the radio wave agitating blade and the boss are provided with a protrusion and a small hole for preventing separation.
誘電体で作られ、断面は非円形に構成され、前記ボスは
凸部を有すると共に弾力性を有し、前記駆動用モーター
の出力軸と略平行のスリットを有し、前記駆動用モータ
ーの出力軸の断面と同一形状の貫通孔を有し、前記駆動
用モーターの出力軸先端近傍に凹部を設け、前記ボスの
凸部がはまり込む構成とした請求項14記載の加熱調理
器。16. The output shaft of the drive motor is made of a low-loss dielectric and has a non-circular cross section, and the boss has a convex portion and elasticity. Has a slit substantially parallel to the drive motor, has a through hole having the same shape as the cross section of the output shaft of the drive motor, provides a recess near the tip of the output shaft of the drive motor, and fits the projection of the boss. The cooking device according to claim 14, which is configured.
複数のスタラー羽根を有した請求項9記載の加熱調理
器。17. The cooking device according to claim 9, wherein the radio wave stirring blade has a plurality of stirrer blades having a substantially fan shape.
端に、第2のスタラー羽根を設けた請求項17記載の加
熱調理器。18. The cooking device according to claim 17, wherein a second stirrer blade is provided at the tip of the stirrer blade of the radio wave stirring blade.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13032293A JP3246082B2 (en) | 1992-06-01 | 1993-06-01 | Cooking device |
Applications Claiming Priority (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14023692 | 1992-06-01 | ||
JP4-139562 | 1992-06-01 | ||
JP13956292 | 1992-06-01 | ||
JP4-140237 | 1992-06-01 | ||
JP14023792 | 1992-06-01 | ||
JP14023892 | 1992-06-01 | ||
JP14023992 | 1992-06-01 | ||
JP4-164484 | 1992-06-23 | ||
JP4-140238 | 1992-06-23 | ||
JP4-140239 | 1992-06-23 | ||
JP16448492 | 1992-06-23 | ||
JP4-140236 | 1992-06-23 | ||
JP13032293A JP3246082B2 (en) | 1992-06-01 | 1993-06-01 | Cooking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0676942A true JPH0676942A (en) | 1994-03-18 |
JP3246082B2 JP3246082B2 (en) | 2002-01-15 |
Family
ID=27565981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13032293A Expired - Fee Related JP3246082B2 (en) | 1992-06-01 | 1993-06-01 | Cooking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3246082B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8297013B2 (en) * | 2003-05-26 | 2012-10-30 | Sekisui Chemical Co., Ltd. | Fireproof resin sash |
-
1993
- 1993-06-01 JP JP13032293A patent/JP3246082B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8297013B2 (en) * | 2003-05-26 | 2012-10-30 | Sekisui Chemical Co., Ltd. | Fireproof resin sash |
Also Published As
Publication number | Publication date |
---|---|
JP3246082B2 (en) | 2002-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5371343A (en) | Heating cooking device having a wave guide and feeder port disposed perpendicular to a rotary table | |
US5877479A (en) | Microwave oven with a turntable and mode stirrers | |
US4028521A (en) | Antenna construction for microwave oven | |
US4028520A (en) | Air flow system for common cavity microwave oven | |
CA1081795A (en) | Microwave oven with a rotary table | |
JPH11108369A (en) | Microwave oven stirrer | |
EP0148562B1 (en) | High frequency heating unit | |
US3991295A (en) | Microwave oven with symmetrically positioned microwave stirrers | |
US4508946A (en) | Microwave oven with rotary antenna | |
JPH0719659B2 (en) | Microwave oven | |
JPH0676942A (en) | Heating cooking unit | |
US4641006A (en) | Rotating antenna for a microwave oven | |
GB2122060A (en) | Microwave oven provided with turntable | |
CN214484292U (en) | Frying and baking machine | |
KR0128565B1 (en) | Twin stirer fan device of microwave-oven | |
KR950009707Y1 (en) | Electronic range | |
CN118564950A (en) | Flat-plate microwave oven | |
KR20050036439A (en) | A structure of lower plate of cavity for microwave oven | |
JP3534074B2 (en) | High frequency heating equipment | |
JP2543045B2 (en) | High frequency heating equipment | |
KR19990017331U (en) | Microwave Dispersion Structure of Microwave Oven | |
JPS6133443Y2 (en) | ||
KR100662362B1 (en) | convection type microwave oven | |
KR200404403Y1 (en) | Oven range | |
JP2002141166A (en) | Cooker |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071102 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081102 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091102 Year of fee payment: 8 |
|
LAPS | Cancellation because of no payment of annual fees |