JPS6349636A - Heating cooker - Google Patents

Abstract

PURPOSE:To provide a heating cooker, which is excellent in heating performance, and seldom gets out of order with a high reliability, by a method wherein a heater is formed so as to be a plane type, and is arranged on the outside of the ceiling surface of a heating chamber so as to cover the whole area of the ceiling surface. CONSTITUTION:A plane-type heater 8 is provided on the outer surface of the ceiling surface or the bottom surface of a heating chamber 1 so as to be contacted closely with respective surfaces, and the heater 8 is fixed through a metallic plate 9 for mounting the heater. The heat generating body 8a of the plane-type heater 8 is wound around a winding frame 8b, consisting of a heat resistant insulating material, and is pinched by insulating plates 8c at the upper and lower sides thereof, while a heater pressing plate 9a clamps the plate-type heater 8 to the ceiling surface of the heating chamber 1 in the from of a sandwich. When heating is advanced, and the plate-type heater 6 or the heater pressing plate 9 causes thermal expansion, the heater pressing plate 9 is pushed up so as to follow the curvature of the ceiling surface of the heating chamber and is contacted closely with the whole area of the ceiling surface of the heating chamber.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、電気オープンやヒーター付電子レンジのよう
に加熱室内の被加熱物をヒーターの熱によって加熱する
加熱調理器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooking device that heats an object to be heated in a heating chamber using the heat of a heater, such as an electric stove or a microwave oven with a heater.

従来の技術 第４図は従来の加熱調理器を示す断面図である。Conventional technology FIG. 4 is a sectional view showing a conventional heating cooker.

第４図において加熱室１には上部に上ヒータ−２、下部
に下ヒータ−３を設け、受皿４に載置した食品をヒータ
ー加熱し、調理する構成としている。In FIG. 4, the heating chamber 1 is provided with an upper heater 2 at the upper part and a lower heater 3 at the lower part, so that food placed on a saucer 4 is heated and cooked.

さらにマグネトロン６を設は導波管７を介して電波を加
熱室に照射し、食品５を電波加熱するいわ・ゆるヒータ
ーと電波の複合加熱のオープンレンジを示している。Furthermore, a magnetron 6 is installed to irradiate radio waves into the heating chamber via a waveguide 7, and the food 5 is heated by radio waves, thereby showing an open range for combined heating of a so-called heater and radio waves.

第５図は従来の加熱調理器に使用しているヒーター３を
斜視図で示したものである。FIG. 5 is a perspective view of a heater 3 used in a conventional heating cooker.

発明が解決しようとする問題点 ところが、このような従来の加熱調理器による上ヒータ
−２および下ヒータ−３が加熱室１内に露出している構
成であるので、この分だけ加熱室の有効容積が狭くなり
、大きな食品まで収納できるようにするためには、ヒー
ターが占める寸法方だけ加熱室１を大きくする必要があ
り、外形も大きくなるので広い設置スペースを必要とす
るので使い難い加熱調理器となっていた。さらに加熱室
内にヒーターが露出していると加熱室壁面に食品の汚れ
が飛び散ったような場合にも、ヒーターが邪魔になって
掃除がしにくく、この面からも使い勝手が悪かった。Problems to be Solved by the Invention However, since the upper heater 2 and lower heater 3 of such a conventional heating cooker are exposed in the heating chamber 1, the effectiveness of the heating chamber is reduced by this amount. In order to be able to store large foods, the heating chamber 1 needs to be made larger by the size that the heater occupies, and the external size also becomes larger, requiring a large installation space, making heating cooking difficult to use. It had become a vessel. Furthermore, if the heater is exposed in the heating chamber, even if food stains are scattered on the heating chamber wall, the heater will get in the way and be difficult to clean, making it inconvenient to use.

さらには、ヒーター２，３が加熱室内に露出しているの
で、特に上ヒータ−１の輻射熱を被加熱物５が直接受け
て、ヒーター１の形状にそった局部的加熱ムラが生じる
等の問題もあった。Furthermore, since the heaters 2 and 3 are exposed in the heating chamber, the object to be heated 5 directly receives the radiant heat from the upper heater 1, causing problems such as local heating unevenness along the shape of the heater 1. There was also.

このような問題点を解消するために、ヒーターを加熱室
の外部に出して、面状に設置する構成案があったが、こ
のような構成では面状ヒーターの熱が加熱室内に効率良
く伝わらないので熱効率が悪く、又、加熱室壁面の熱変
形により、面状ヒーターとの接触が局部的になりやすい
。この局部的な接触は、被加熱物に加熱ムラが生じると
共に、面状ヒーター自体の局部加熱からくる断線、及び
絶縁劣化等の不具合もあった。In order to solve these problems, there was a proposal to place the heater outside the heating chamber and install it in a planar configuration, but with this configuration, the heat from the planar heater could not be efficiently transferred into the heating chamber. Since there is no heating chamber, thermal efficiency is poor, and contact with the sheet heater tends to occur locally due to thermal deformation of the heating chamber wall surface. This local contact causes uneven heating of the object to be heated, and also causes problems such as wire breakage and insulation deterioration due to local heating of the sheet heater itself.

本発明は、このような従来の問題点を解消するものであ
り、熱効率に優れ、加熱室内をすっきシすることによっ
て使い易く、加熱性能が良く故障の少ない信頼性の高い
加熱調理器を提供するものである。The present invention solves these conventional problems, and provides a highly reliable heating cooker that has excellent thermal efficiency, is easy to use by cleaning the heating chamber, has good heating performance, and is less likely to malfunction. It is something to do.

問題点を解決するだめの手段 本発明の加熱調理器は、ヒーターを面状に形成し、加熱
室天井面の外部にて、ほぼ全域におよぶように配置し、
この加熱室天井面は加熱室外部、すなわち面状ヒーター
側に、ゆるやかに凸面を形成させる。又、前記面状ヒー
ターは耐熱絶縁物を介して、金属製の押さえ板で、前記
加熱室天井面に圧接固定する構成で、この金属製の押さ
え板は、前記面状ヒーターの周縁部を押える複数の枠材
およびそれぞれの前記枠材を連結する連結材より構成さ
れ、しかもこの押さえ板の平面方向には摺動可能に、前
記加熱室天井面に装備することにより、加熱室天井面と
面状ヒーターの均一で確実な面接触を得ようとするもの
である。Means for Solving the Problems In the heating cooker of the present invention, the heater is formed into a planar shape and is arranged so as to cover almost the entire area outside the ceiling surface of the heating chamber.
This heating chamber ceiling surface forms a gently convex surface on the outside of the heating chamber, that is, on the side of the planar heater. Further, the planar heater is fixed to the ceiling surface of the heating chamber through a heat-resistant insulator with a metal press plate, and the metal press plate presses the peripheral edge of the planar heater. It is composed of a plurality of frame members and a connecting member that connects each of the frame members, and is slidable in the plane direction of the holding plate and is installed on the heating chamber ceiling surface, thereby making it possible to connect the heating chamber ceiling surface and the surface. The aim is to obtain uniform and reliable surface contact of the shaped heater.

作　　用 本発明によれば、面状ヒーターは加熱室天井面外部に設
けられ、この加熱室天井面は、あらかじめ面状ヒーター
側に凸になっているので加熱が進むにつれて、熱膨張に
より加熱室天井面は面状ヒーター側に向かってさらに弓
なりにわん曲する。According to the present invention, the planar heater is provided outside the ceiling of the heating chamber, and since the ceiling of the heating chamber is convex in advance toward the planar heater, as heating progresses, the heating chamber expands due to thermal expansion. The ceiling surface further curves into an arch toward the planar heater side.

この時面状ヒーターの押さえ板は、その平面方向に対し
て摺動自在に固定しているので、上記加熱室天井面の凸
面部わん曲度合にそうように、わん曲しながら、面状ヒ
ーターを加熱室天井面に圧接しようとする。すなわち、
もし押さえ板が単なる平板である場合、加熱室天井面の
わん曲が進むにつれて、押さえ板も山状にわん曲するが
、その外周部の材料は平面的に余る結果となシ、波状に
変形せざるを得ない。この波状の変形により、面状ヒー
ターを加熱室天井面全域に密着させることが困難となり
本来の目的を果たすことができない。At this time, since the holding plate of the sheet heater is fixed so as to be slidable in the plane direction, the sheet heater is to the heating chamber ceiling. That is,
If the holding plate is just a flat plate, as the heating chamber ceiling surface curves, the holding plate will also curve into a mountain shape, but the material on the outer periphery will not be left flat, and it will deform into a wavy shape. I have no choice but to do it. This wavy deformation makes it difficult to bring the planar heater into close contact with the entire ceiling surface of the heating chamber, making it impossible to achieve its original purpose.

本発明は、押さえ板が面状ヒーター周縁部の枠材とそれ
ぞれの枠材を連結する連結材で構成されているので、熱
による金属の延びを吸収することが可能であり、加熱室
天井面のいかなるわん曲度合にも対応しながら面状ヒー
ター全面を確実に密着させることが可能となり、面状ヒ
ーターの熱は、均一に、しかも効率良く加熱室天井面へ
、さらに加熱室内の被加熱物へと伝わる。又、押さえ板
が単なる平板である場合に比べ、材料も少なく、軽く扱
い易くなるため作業性もよく、熱容量も小さくなるため
、立ち上う；り時間も短縮することができ、絶縁抵抗も
大きくなり、安全性も向上される。In the present invention, since the holding plate is composed of the frame material at the peripheral edge of the sheet heater and the connecting material that connects each frame material, it is possible to absorb the elongation of the metal due to heat, and the heating chamber ceiling surface This makes it possible to ensure that the entire surface of the sheet heater is in close contact with any degree of curvature of the sheet, and the heat from the sheet heater is distributed evenly and efficiently to the ceiling of the heating chamber, and even to the objects to be heated inside the heating chamber. It is transmitted to. In addition, compared to when the presser plate is a simple flat plate, it requires less material and is lighter and easier to handle, making it easier to work with.Since the heat capacity is smaller, the rising time can be shortened, and the insulation resistance is also higher. This also improves safety.

これらの作用により、発熱体を加熱室内外に設けていて
も効果的に食品を加熱することができ、勿論熱分布は均
一化されるので均等な焼き上げを得ることができる。ま
た加熱室内には露出したヒーターが不要であるので、加
熱室内の有効容積も広くなり、清掃も容易にできるなど
使い勝手の向上も達成できる。Due to these effects, it is possible to effectively heat the food even if heating elements are provided inside and outside the heating chamber, and of course, the heat distribution is made uniform, so that even baking can be achieved. Furthermore, since there is no need for an exposed heater inside the heating chamber, the effective volume within the heating chamber is increased, and the usability can also be improved, such as easy cleaning.

面状ヒーターの押さえ板の固定については、若干の隙間
を有したネジ止めで行ない、押さえ板の外周部の波打ち
現象が無いので少ないビスで充分の固定が可能で組立工
数も少なく、作業性も極めて良好である。The holding plate of the sheet heater is fixed using screws with a slight gap, and since there is no waving on the outer periphery of the holding plate, sufficient fixation is possible with a small number of screws, reducing assembly man-hours and improving work efficiency. Very good.

実施例 以下本発明の一実施例を図面を参照して説明する。Example An embodiment of the present invention will be described below with reference to the drawings.

第１図は本発明による加熱調理器の構造を示す正面断面
図である。第１図において加熱室１の天井面、あるいは
底面ではそれぞれの外面に面状ヒーター８が密着して設
けている。その面状ヒーター８は、ヒーター取付用の金
属板９により固定している。１０は熱を外部へ逃がさな
いだめの断熱材である。さらにマグネトロン６は導波管
７に設けられ、被加熱物載置皿４の上にある被加熱物５
を高周波加熱するものである。以上の構成にて、被加熱
物５は、ヒーター加熱および高周波加熱のいずれも行う
ことが可能である。FIG. 1 is a front sectional view showing the structure of the cooking device according to the present invention. In FIG. 1, a sheet heater 8 is provided in close contact with the outer surface of the ceiling or bottom of the heating chamber 1. The planar heater 8 is fixed by a metal plate 9 for attaching the heater. 10 is a heat insulating material to prevent heat from escaping to the outside. Furthermore, the magnetron 6 is provided in the waveguide 7 and the object to be heated, which is placed on the object to be heated plate 4, is
is heated by high frequency. With the above configuration, the object to be heated 5 can be heated by both heater heating and high frequency heating.

第２図は上部面状ヒーター８の構成を詳細に記載した部
分断面図であり、第３図は同面状ヒーター８及びヒータ
ー押さえ板９の各部品ごとに構成を示す斜視図である。FIG. 2 is a partial sectional view showing the structure of the upper planar heater 8 in detail, and FIG. 3 is a perspective view showing the structure of each component of the planar heater 8 and the heater pressing plate 9.

第２図、第３図において、面状ヒーター８は、発熱体８
は、発熱体８ａをマイカ等の耐熱絶縁物からなる巻枠８
ｂに巻きついてお９、その上下を同じくマイカ等の絶縁
板８Ｃで、はさみ込む構成である。ヒーター押さえ板９
ａはその中心から放射状に数個の長穴を設けており、そ
の長穴に段付ネジ１１を挿入し、加熱室１の天井面に、
面状ヒーター８をサンドイッチにしながら締付けている
。このヒーター押さえ板は、面状ヒーターの周縁部を押
える複数の枠材およびそれぞれの枠材を連結する連結材
より成っている。In FIGS. 2 and 3, the sheet heater 8 is a heating element 8.
The heating element 8a is wrapped around a winding frame 8 made of a heat-resistant insulator such as mica.
It has a structure in which it is wrapped around b and sandwiched between upper and lower insulating plates 8C made of mica or the like. Heater holding plate 9
A has several elongated holes radially extending from its center, and the step screws 11 are inserted into the elongated holes, and the screws 11 are inserted into the ceiling of the heating chamber 1.
The sheet heater 8 is tightened while sandwiching it. This heater pressing plate is made up of a plurality of frame members that press the peripheral edge of the planar heater and a connecting member that connects the respective frame members.

以上の構成により゛、加熱が進み、面状ヒーター８や、
ヒーター押さえ板９が熱膨張を起こしても、段付ビス１
１の上下方向の圧力は、それほど強くなく、又長大に締
め付けられているので押さえ板９は平面方向に広がって
いく。しかし加熱室天井面は、その周囲を箱形に形成さ
れているため、熱膨張の力は、垂直方向に働き上部へと
、わん曲しようとする。そこでヒーター押さえ板９ば、
その加熱室天井面のわん曲に、ピッタリとそうように上
部へ押し上げられ、加熱室天井面全域に密着させること
ができる。With the above configuration, heating progresses, and the sheet heater 8,
Even if the heater holding plate 9 undergoes thermal expansion, the stepped screw 1
The pressure in the vertical direction of 1 is not so strong, and since it is tightened in a long way, the presser plate 9 spreads in the plane direction. However, since the ceiling surface of the heating chamber has a box-shaped periphery, the force of thermal expansion acts in the vertical direction and tends to curve upward. Therefore, the heater holding plate 9,
It is pushed up to the top to fit the curve of the ceiling of the heating chamber, and can be brought into close contact with the entire ceiling of the heating chamber.

発明の効果 以上のような発明によると、次のような効果を発揮する
ことができる。Effects of the Invention According to the invention as described above, the following effects can be achieved.

（１）面状ヒーターの押さえ板を摺動可能に、かつ。(1) The pressing plate of the sheet heater can be slid.

わん曲時の波打ち現象が無くなるので、加熱室面と面状
ヒーターの密着が、加熱中どの段階においても良好とな
り、熱の伝導が効率良く行なわれ効率が向上する。Since the waving phenomenon during bending is eliminated, the surface of the heating chamber and the sheet heater are in good contact with each other at any stage during heating, and heat conduction is performed efficiently and efficiency is improved.

（２）面状ヒーターの押さえ板の容積が小さくて済むの
で、熱容量が小さくなり立ち上がり性能が向上され、か
つ、絶縁抵抗が大きくなり安全性が向上され、かつ、軽
く扱い易くなるため作業性が向上する。(2) Since the volume of the holding plate of the sheet heater is small, the heat capacity is reduced and the start-up performance is improved, and the insulation resistance is increased, which improves safety, and the workability is improved because it is light and easy to handle. improves.

（３）局部的なヒーターの加熱が無くなり、加熱ムラが
少なくなり調理性能が向上する。(3) Local heating by the heater is eliminated, uneven heating is reduced, and cooking performance is improved.

（４）同じく局部的な加熱が無くなり発熱体の断線や、
絶縁劣化等の故障が少なくなる。(4) Similarly, local heating is lost and the heating element is disconnected,
Failures such as insulation deterioration are reduced.

（５）ヒーターを加熱室外部へ出しても効率が良好な加
熱室が実現できるので、加熱室内は余分な突出物が無く
、スッキリとし、掃除のしやすい使い勝手の良い加熱調
理器となる。(5) Even if the heater is placed outside the heating chamber, a highly efficient heating chamber can be realized, so there are no unnecessary protrusions inside the heating chamber, resulting in a convenient heating cooker that is clean and easy to clean.

（６）加熱室壁は、加熱時にも、常に一定方向にしか変
形しないので、高周波加熱時にも、安定した熱分布性能
の設計が可能であり、高周波加熱ムラを少なくすること
ができる。(6) Since the heating chamber wall always deforms only in a certain direction even during heating, it is possible to design stable heat distribution performance even during high frequency heating, and it is possible to reduce uneven high frequency heating.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による加熱調理器の断面図、第２図は同
加熱調理器のヒーター取付部の拡大断面図、第３図は同
ヒーター取付部とヒーターの構成を示す分解斜視図、第
４図は従来の加熱調理器の断面図、第６図は同調理器の
ヒーター斜視図である。 １・・・・・・加熱室、２・・・・・・上ヒータ−，３
・・・・・・下ヒータ−，４・・・・・・被加熱物載置
皿、５・・・・・・被加熱物、６・・・・・・マグネト
ロン、７・・・・・・導波管、８・・・・・・面状ヒー
ター、８ａ・・・・・・発熱体、８ｂ・・・・・・巻枠
、８ｃ・・・・・・絶縁板、９ａ・・・・・・ヒーター
押さえ板（上〕、９ｂ・・・・・・ヒーター押さえ板（
下）、１０ａ・・・・・・断熱材（上）、１ｏｂ・・・
・・・断熱材（下）、１１・・・・・・段付ネジ、１２
・・・・・・ヒーター取付用バンド。 １−−一加　熟　！ ８・−面状ヒータ １１−一一段　付　洋　ジ １２−−−’ｃ−タ駄付用バンド ０ｂ１２ 第３図FIG. 1 is a cross-sectional view of a heating cooker according to the present invention, FIG. 2 is an enlarged cross-sectional view of a heater attachment part of the same heating cooker, FIG. 3 is an exploded perspective view showing the configuration of the heater attachment part and the heater, and FIG. FIG. 4 is a sectional view of a conventional heating cooker, and FIG. 6 is a perspective view of the heater of the same cooker. 1... Heating chamber, 2... Upper heater, 3
...Lower heater, 4...Plate for placing object to be heated, 5...Object to be heated, 6...Magnetron, 7... - Waveguide, 8... Planar heater, 8a... Heating element, 8b... Winding frame, 8c... Insulating plate, 9a... ... Heater holding plate (top), 9b... Heater holding plate (
lower), 10a... Insulation material (upper), 1ob...
...Insulation material (bottom), 11...Step screw, 12
・・・・・・Heater mounting band. 1--Ikka Mature! 8. - Planar heater 11 - 11 stage attached Western jacket 12 - 'C - Band for attaching tab 0b12 Fig. 3

Claims (2)

【特許請求の範囲】[Claims] （１）被加熱物を加熱する加熱室と、その被加熱物を電
熱加熱する電熱装置を有し、この電熱装置は、前記加熱
室天井面の外面にて、ほぼ全域に配置した略四角形状の
面状ヒーターとし、前記加熱室天井面は、前記面状ヒー
ター側に、ゆるやかに凸面を形成するように構成すると
共に、この面状ヒーターは、耐熱絶縁物を介して、金属
製の押さえ板で、前記加熱室天井面に圧接させ、この押
さえ板は、前記面状ヒーターの周縁部を押える複数の枠
材およびそれぞれの前記枠材を連結する連結材より構成
され、この押さえ板の平面方向には、摺動可能に、前記
加熱室天井面に装備されたことを特徴とする加熱調理器
。(1) It has a heating chamber that heats an object to be heated, and an electric heating device that electrically heats the object, and the electric heating device has a substantially rectangular shape disposed over almost the entire outer surface of the ceiling surface of the heating chamber. The ceiling surface of the heating chamber is configured to form a gently convex surface on the side of the sheet heater, and the sheet heater is connected to a metal holding plate through a heat-resistant insulator. The holding plate is pressed against the ceiling surface of the heating chamber, and is composed of a plurality of frame members that press the peripheral edge of the planar heater and a connecting member that connects each of the frame members. The cooking device is characterized in that it is slidably mounted on the ceiling surface of the heating chamber. （２）連結材は面状ヒーターの対角線上に位置する特許
請求の範囲第１項記載の加熱調理器。(2) The cooking device according to claim 1, wherein the connecting member is located on a diagonal line of the sheet heater.