JPH0577930B2 - - Google Patents
Info
- Publication number
- JPH0577930B2 JPH0577930B2 JP14327986A JP14327986A JPH0577930B2 JP H0577930 B2 JPH0577930 B2 JP H0577930B2 JP 14327986 A JP14327986 A JP 14327986A JP 14327986 A JP14327986 A JP 14327986A JP H0577930 B2 JPH0577930 B2 JP H0577930B2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- heating chamber
- heating
- ceiling surface
- planar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 94
- 239000002184 metal Substances 0.000 claims description 11
- 239000012212 insulator Substances 0.000 claims description 2
- 238000010411 cooking Methods 0.000 description 9
- 235000013305 food Nutrition 0.000 description 9
- 238000009826 distribution Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 208000033991 Device difficult to use Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Electric Stoves And Ranges (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電気オーブンやヒータ付電子レンジ
のように加熱室内に収納した被加熱物をヒータの
熱により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 Industrial Application The present invention relates to a cooking device, such as an electric oven or a microwave oven with a heater, that heats an object to be heated stored in a heating chamber using the heat of a heater.
従来の技術
一般にヒータ付電子レンジには、ヒータによる
加熱方式により、主に熱の輻射と自然対流を利用
し加熱室内の天面および底面にシーズヒータを配
設した上下ヒータ式と加熱室外でヒータにより発
生させた熱を循環フアンで加熱室内へと強制循環
させて食品を加熱する熱風式とに大別できる。前
者は電気オーブンとしての性能も良く、構成が簡
素であり安価にできることからも主流を成してい
る。Conventional technology Microwave ovens equipped with a heater generally use a heating method using a heater, and a top-bottom heater type that uses sheathed heaters on the top and bottom of the heating chamber, which mainly uses heat radiation and natural convection, and a top-bottom heater type that uses a heater outside the heating chamber. It can be roughly divided into hot air type, which heats the food by forcing the heat generated by the heat to circulate into the heating chamber using a circulation fan. The former has good performance as an electric oven, has a simple configuration, and can be made at low cost, so it is the mainstream.
第6図は従来の上下ヒータ式の加熱調理器を示
す断面図である。 FIG. 6 is a sectional view showing a conventional heating cooker with upper and lower heaters.
第6図において加熱室1には上部に上ヒータ
2、下部にヒータ3を設け、受皿4に載置した食
品5をヒータ加熱し、調理する構成としている。
さらにマグネトロン6を設け導波管7を介して電
波を加熱室1内に照射し、食品5を電波加熱する
いわゆるヒータと電波の複号加熱のオーブンレン
ジを示している。 In FIG. 6, the heating chamber 1 is provided with an upper heater 2 at the upper part and a heater 3 at the lower part, and the food 5 placed on the saucer 4 is heated by the heater and cooked.
Furthermore, a magnetron 6 is provided and radio waves are irradiated into the heating chamber 1 through a waveguide 7 to heat the food 5 by radio waves. This is a so-called microwave oven with multiple heating of a heater and radio waves.
第7図は従来の加熱調理器に使用しているヒー
タを斜視図で示したものである。 FIG. 7 is a perspective view of a heater 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
と上ヒータ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、ヒータが占める寸法分だ
け加熱室を大きくする必要があつた。そのため外
形も大きくなり、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つていた。Problems to be Solved by the Invention However, in such a conventional heating cooker, the upper heater 2 and the lower heater 3 are exposed in the heating chamber 1, so the effectiveness of the heating chamber is reduced by this amount. In order to be able to store even large foods due to the narrow volume, it was necessary to make the heating chamber larger by the size occupied by the heater. As a result, the external size is large and a large installation space is required, making the cooking device difficult to use.
また、加熱室内にヒータが露出していると加熱
室壁面に食品の油や煮汁などの汚れが飛び散つた
ような場合にも、ヒータが邪魔になつて掃除がし
にくく、この面からも使い勝手が悪かつた。 In addition, if the heater is exposed in the heating chamber, even if dirt from food oil or broth is scattered on the heating chamber wall, the heater will get in the way and be difficult to clean, making it easier to use. was wrong.
さらには、ヒータ1,2が加熱室内に露出して
いるので、特に上ヒータ1の輻射熱を食品5が直
接受けて、ヒータ1の形状に沿つた局部的加熱ム
ラが生じるなどの問題もあつた。 Furthermore, since the heaters 1 and 2 are exposed in the heating chamber, the food 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. .
このような問題点を解消するためには、ヒータ
を加熱室の外部に出して、面状に設置する構成案
があるが、加熱室壁面の熱変形により、波打ちが
発生し面状ヒータ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、面状ヒータ自体の局部加熱からく
る断線及び絶縁劣化等の不都合につながるもので
ある。 In order to solve these problems, there is a configuration plan in which the heater is placed outside the heating chamber and installed in a planar configuration, but due to thermal deformation of the heating chamber wall surface, undulations occur and there is a problem with the planar heater. Contact tends to be localized. This local contact causes uneven heating of the object to be heated, and also leads to 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、加熱室内をすつきり
することによつて使い易く、しかも加熱性能が良
く故障の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 excellent thermal efficiency, easy to use by clearing the heating chamber, and highly reliable cooking with good heating performance and no failures. It provides equipment.
問題点を解決するための手段
本発明の加熱調理器は、ヒータを面状に形成
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、その加熱室天井面は、熱膨張率の
低い金属板で構成し、かつ加熱室外部すなわち、
面状ヒータ側にふくらみを形成するもので面状ヒ
ータと加熱室天井面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. It is constructed of a metal plate with a low coefficient of expansion, and is placed outside the heating chamber, i.e.
A bulge is formed on the side of the sheet heater to ensure uniform and reliable surface contact between the sheet heater and the ceiling of the heating chamber.
作 用
本発明によれば、面状ヒータは加熱室天井面外
部に設けられ、この加熱室天井面は、あらかじめ
面状ヒータ側にふくらみをもつているので、加熱
が進むにつれて、天井面の熱膨張により、加熱室
天井面は面状ヒータ側に向かつてさらに弓なりに
湾曲する。この時、加熱室天井面が単なる平板で
熱膨張率の高い金属板であれば、熱膨張が吸収で
きずに湾曲途中で波状に変形し局部的に座屈して
しまい、面状ヒータを加熱室天井面に密着させる
ことができなくなる。しかし、本発明のように加
熱室天井面を熱膨張率の低い金属板で構成すれ
ば、変形量は微少となり、波状の変形もなく、全
体に均一な湾曲をすることになる。Effect According to the present invention, the planar heater is provided outside the ceiling surface of the heating chamber, and since the ceiling surface of the heating chamber has a bulge in advance on the side of the planar heater, as heating progresses, the heat on the ceiling surface increases. Due to the expansion, the heating chamber ceiling surface further curves into an arch toward the planar heater side. At this time, if the heating chamber ceiling surface is just a flat metal plate with a high coefficient of thermal expansion, it will not be able to absorb the thermal expansion and will deform into a wave shape during curving and locally buckle. It will not be possible to make it stick to the ceiling surface. However, if the ceiling surface of the heating chamber is made of a metal plate with a low coefficient of thermal expansion as in the present invention, the amount of deformation will be minimal, there will be no wavy deformation, and the entire surface will be uniformly curved.
これらの作用により、発熱体を加熱室外に設け
ていても効果的に食品を加熱するとができ、もち
ろん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 the heating element is provided outside the heating chamber, and of course, the heat distribution is made uniform, so that even baking can be achieved. Further, 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 be improved such as easy cleaning.
実施例
以下本発明の一実施例の加熱調理器を図面を参
照して説明する。Embodiment A heating cooker according to 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1a、あるいは底面には、それぞれの外面に
面状ヒータ8が密着して設けている。その面状ヒ
ータ8は、ヒータ取付け用の金属板9により固定
している。10は、熱を外部へ逃がさないための
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 a cooking device according to the present invention. In FIG. 1, a planar heater 8 is provided in close contact with the outer surface of the ceiling surface 1a or the bottom surface 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 for preventing heat from escaping to the outside. Furthermore, the magnetron 6 is a waveguide 7
The device is installed to heat the object to be heated 5 placed on the object to be heated plate 4 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、上部面状ヒータ部の各部品ごとに構
成を示す斜視図であり、第3図は、同面状ヒータ
8の構成を詳細に記載した部分断面図である。第
2図、第3図において、面状ヒータ8は、発熱体
8aをマイカ等の耐熱絶縁物からなる巻枠8bに
巻いており、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。ヒータ取付板9
は、その中心から放射状の数個の長穴を設けてお
り、その長穴に段付ネジ11を押入し、加熱室1
の天井面1aに、面状ヒータ8をサンドイツチに
しながら締付けている。そして中央部は、加熱室
1天井面に溶接等で固定された係止金具12を設
け、面状ヒータ8を挿入後、係止金具12をねじ
る形で折曲し、天井面1aに密着させている。こ
こで、この加熱室1の天井面1aは、面状ヒータ
側にゆるやかなふくらみをもつている。 FIG. 2 is a perspective view showing the structure of each component of the upper planar heater section, and FIG. 3 is a partial sectional view showing the structure of the planar heater 8 in detail. In FIGS. 2 and 3, the planar heater 8 has a structure in which a heating element 8a is wound around a winding frame 8b made of a heat-resistant insulator such as mica, and the top and bottom of the frame 8b are sandwiched between insulating plates 8c also made of mica or the like. It is. Heater mounting plate 9
has several elongated holes radiating from the center, and the stepped screws 11 are pushed into the elongated holes to complete the heating chamber 1.
A sheet heater 8 is fastened to the ceiling surface 1a of the roof 1a in a sandwiched manner. A locking metal fitting 12 fixed to the ceiling surface of the heating chamber 1 by welding or the like is provided in the central part, and after inserting the planar heater 8, the locking metal fitting 12 is bent in a twisting manner and brought into close contact with the ceiling surface 1a. ing. Here, the ceiling surface 1a of this heating chamber 1 has a gentle bulge on the side of the sheet heater.
以上の構成により、加熱が進み、面状ヒータ8
や、取付板9が熱膨張を起こしても、中央部は係
止金具12で圧着固定されているため、常に面状
ヒータ8と加熱室1天井面との密着状態は変化し
ない。また、段付ネジ11の上下方向の圧力は、
それほど強くなく、また長穴に締め付けられてい
るので、取付板9は平面方向に広がつていく。し
かし、加熱室1天井面1aは、その周囲を溶接さ
れ、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、上部へと湾曲しようとする。こ
の時、天井面が単なる平板であれば、上下どちら
の方向に湾曲するかも知れず、周囲以外の部分で
波状に変形し、熱膨張が進むにつれて、局部的な
座屈を起こしてしまう。しかし図に示すように、
加熱室1の天井面1aを熱膨張率の小さい金属板
(例えば、SUS430等)で構成し、面状ヒータ側
にふくらみを形成しておけば、変形量も小さく抑
えられ、安定してふくらみ方向に湾曲することに
なる。すなわち、益々面状ヒータ8と、加熱室1
天井面1aの密着が強くなり、熱効率の良い安定
した熱分布が得られることになる。 With the above configuration, heating progresses and the sheet heater 8
Even if the mounting plate 9 undergoes thermal expansion, the state of close contact between the planar heater 8 and the ceiling surface of the heating chamber 1 will not change at all times because the central portion is fixed by pressure with the locking fitting 12. Moreover, the pressure in the vertical direction of the stepped screw 11 is
Since it is not very strong and is tightened in the elongated hole, the mounting plate 9 expands in the plane direction. However, since the ceiling surface 1a of the heating chamber 1 is welded around it and is formed into a box shape, the force of thermal expansion is
It works vertically and tries to curve upwards. At this time, if the ceiling surface is just a flat plate, it may curve in either the up or down direction, deform into waves in areas other than the periphery, and cause local buckling as thermal expansion progresses. However, as shown in the figure,
If the ceiling surface 1a of the heating chamber 1 is made of a metal plate with a small coefficient of thermal expansion (for example, SUS430, etc.) and a bulge is formed on the side of the sheet heater, the amount of deformation can be kept small and the bulge direction can be stably maintained. It will be curved to. That is, the planar heater 8 and the heating chamber 1
The adhesion of the ceiling surface 1a is strengthened, and stable heat distribution with good thermal efficiency can be obtained.
また、第4図、第5図は、面状ヒータ8の周縁
部の固定方法の他の実施例を示す部分断面図であ
る。面状ヒータ8をヒータ取付板9で押え込む構
成は同一である。第4図において、加熱室1天井
面1aの単面部に穴を設けており、その穴に段付
ネジ11を押入して、ヒータ取付板9に締付けて
いる。つまり、段付ネジ11の段部で平面方向の
移動が可能となる。第5図においては、加熱室1
天井面1aに、略Z形の金具13を設け、ヒータ
取付板9をその金具13と天井面1aの間に差し
込み、若干の隙間を設けて固定する方法である。
この第4図、第5図に示すような固定方法によつ
ても、その効果は変らない。 4 and 5 are partial cross-sectional views showing other embodiments of a method of fixing the peripheral edge of the sheet heater 8. FIG. The configuration in which the planar heater 8 is held down by the heater mounting plate 9 is the same. In FIG. 4, a hole is provided in a single surface of the ceiling surface 1a of the heating chamber 1, and a stepped screw 11 is pushed into the hole and fastened to the heater mounting plate 9. In other words, the stepped portion of the stepped screw 11 allows movement in the plane direction. In Fig. 5, heating chamber 1
In this method, a substantially Z-shaped metal fitting 13 is provided on the ceiling surface 1a, and the heater mounting plate 9 is inserted between the metal fitting 13 and the ceiling surface 1a, and fixed with a slight gap.
Even with the fixing method shown in FIGS. 4 and 5, the effect remains the same.
発明の効果
以上のように本発明の加熱調理器によれば次の
効果を得ることができる。Effects of the Invention As described above, according to the cooking device of the present invention, the following effects can be obtained.
(1) 面状ヒータの特長である良好な熱分布を得る
ためには、冷時熱時とも加熱室天井面と面状ヒ
ータの密着性が良いことが最大の条件である
が、本発明のように加熱室天井面を面状ヒータ
側に突出させ、熱膨張率の小さい金属板で構成
することにより、安定した密着状態が得られる
ため、熱の伝導が効率良く行なわれ、調理時間
も短縮できて、熱効率の優れた加熱調理が実現
できる。(1) In order to obtain good heat distribution, which is a feature of the sheet heater, the most important condition is that the sheet heater has good adhesion to the heating chamber ceiling surface both in cold and hot conditions. By making the heating chamber ceiling protrude toward the planar heater side and constructing it with a metal plate with a low coefficient of thermal expansion, stable adhesion can be achieved, resulting in efficient heat conduction and shortening cooking time. This makes it possible to achieve heating cooking with excellent thermal efficiency.
(2) 安定した密着により、局部的なヒータの加熱
が無くなり、加熱ムラのない均一な熱分布が得
られ、調理性能が向上する。(2) Stable adhesion eliminates local heating by the heater, provides uniform heat distribution without uneven heating, and improves cooking performance.
(3) 同じく安定した密着により、局部的なヒータ
の加熱が無くなり、発熱体の断線や、絶縁劣化等
による故障、また、感電・火災等の危険のない安
全性に優れた加熱調理器を実現できる。(3) The same stable adhesion eliminates local heating of the heater, creating a highly safe heating cooker that is free from failures due to disconnection of the heating element, insulation deterioration, etc., as well as dangers such as electric shock and fire. can.
(4) ヒータを加熱外部へ出しても効率が良好な加
熱室が実現できるので、従来のヒータを加熱室
内に設ける構成に比べ、加熱室内は余分な突出
物が無くすつきりした形になり、加熱室壁面に
食品が飛び散つて汚れても拭きとり易く、掃除
のし易い使い勝手の良い加熱調理器となる。(4) A highly efficient heating chamber can be achieved even when the heater is placed outside the heating chamber, so compared to the conventional configuration in which the heater is placed inside the heating chamber, the heating chamber has no unnecessary protrusions and has a more streamlined shape. To provide an easy-to-use heating cooking device that is easy to clean and can be easily wiped off even if food is scattered on the wall of a heating chamber and becomes dirty.
(5) ヒータが加熱室内に出張らない分だけ、加熱
室内の有効容積が増え、大きな食品でも加熱調
理することができる。また同一の加熱容積とす
ると、その分だけ外形を小型にできるのでコン
パクトで使いやすい加熱調理器を実現できる。(5) Since the heater does not extend into the heating chamber, the effective volume within the heating chamber increases, allowing even large foods to be cooked. Furthermore, if the heating volume is the same, the external size can be made smaller by that amount, making it possible to realize a compact and easy-to-use heating cooker.
(6) 加熱室壁面は、加熱時にも常に一定方向に変
形し、しかも微少な変形だけですむので、高周
波加熱時にも、安定した加熱分布性能が得られ
る加熱室の設計が可能であり、高周波加熱ムラ
も少なくすることができる。(6) The heating chamber wall surface always deforms in a fixed direction during heating, and only slight deformation is required, so it is possible to design a heating chamber that provides stable heating distribution performance even during high frequency heating. Heating unevenness can also be reduced.
第1図は本発明の一実施例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取付部と
ヒータの構成を示す分解斜視図、第3図は同加熱
調理器のヒータ取付部の拡大断面図、第4図、第
5図は同加熱調理器の他の実施例を示すヒータ取
付部の拡大断面図、第6図は従来の加熱調理器の
断面図、第7図は同加熱調理器のヒータ斜視図で
ある。
1……加熱室、1a……天井面、2……上ヒー
タ、3……下ヒータ、8……面状ヒータ。
FIG. 1 is a cross-sectional view of a heating cooker according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the configuration of the heater mounting part and heater of the same heating cooker, and FIG. 3 is a heater of the same heating cooker. 4 and 5 are enlarged sectional views of the heater mounting portion showing other embodiments of the heating cooker, FIG. 6 is a sectional view of the conventional heating cooker, and FIG. 7 is an enlarged sectional view of the mounting portion. is a perspective view of a heater of the heating cooker. 1... Heating chamber, 1a... Ceiling surface, 2... Upper heater, 3... Lower heater, 8... Planar heater.
Claims (1)
を加熱する面状発熱体を備え、前記面状発熱体は
前記加熱室を構成する加熱室壁面の外面に耐熱絶
縁物を介して密接する構成とし、前記面状発熱体
を配設する加熱室壁面は、他の加熱室壁面より熱
膨張率の小さい金属板で構成するとともに、前記
面状発熱体側にふくらんだ形状に形成した加熱調
理器。1. A heating chamber for storing an object to be heated, and a planar heating element for heating the object to be heated, and the planar heating element is closely attached to the outer surface of a heating chamber wall constituting the heating chamber via a heat-resistant insulator. The heating chamber wall surface in which the planar heating element is disposed is made of a metal plate having a coefficient of thermal expansion smaller than that of the other heating chamber wall surfaces, and is formed in a shape that bulges toward the planar heating element side. vessel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14327986A JPS62299628A (en) | 1986-06-19 | 1986-06-19 | Heating cooker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14327986A JPS62299628A (en) | 1986-06-19 | 1986-06-19 | Heating cooker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62299628A JPS62299628A (en) | 1987-12-26 |
JPH0577930B2 true JPH0577930B2 (en) | 1993-10-27 |
Family
ID=15335043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14327986A Granted JPS62299628A (en) | 1986-06-19 | 1986-06-19 | Heating cooker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62299628A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6519881B2 (en) * | 2016-03-09 | 2019-05-29 | パナソニックIpマネジメント株式会社 | Cooker |
-
1986
- 1986-06-19 JP JP14327986A patent/JPS62299628A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS62299628A (en) | 1987-12-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |