JP2563573B2 - High frequency cooking device with heater - Google Patents
High frequency cooking device with heaterInfo
- Publication number
- JP2563573B2 JP2563573B2 JP1101292A JP10129289A JP2563573B2 JP 2563573 B2 JP2563573 B2 JP 2563573B2 JP 1101292 A JP1101292 A JP 1101292A JP 10129289 A JP10129289 A JP 10129289A JP 2563573 B2 JP2563573 B2 JP 2563573B2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- high frequency
- frequency
- heating
- upper heater
- 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
Landscapes
- Electric Ovens (AREA)
Description
【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、加熱調理室の上部に管状の上ヒータを備え
たヒータ付高周波加熱調理装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a high-frequency heating cooking device with a heater having a tubular upper heater in the upper part of a heating cooking chamber.
(従来の技術) 従来、この種のヒータ付高周波加熱調理装置は、第8
図に示すように、加熱調理室1の上部にヒータ収納部2
を形成し、このヒータ収納部2に管状の上ヒート3を配
設する構成となっている。この場合、上ヒータ3の支持
構造は、上ヒータ3の両端部をヒータ収納部2の左右両
端面のヒータ貫通孔4に貫通し、外部で支持部材5によ
り上ヒータ3の両端部を支持するようになっている。(Prior Art) Conventionally, this type of high-frequency heating cooking device with a heater is
As shown in FIG.
And a tubular upper heat 3 is arranged in the heater housing 2. In this case, the support structure of the upper heater 3 penetrates both ends of the upper heater 3 into the heater through holes 4 on the left and right end surfaces of the heater housing 2, and supports the both ends of the upper heater 3 by the support member 5 outside. It is like this.
このような構造では、高周波加熱時に、高周波(マイ
クロ波)が上ヒータ3の中心のコイル状ニクロム線3aを
伝ってヒータ貫通孔4の近辺に集中し、それによってコ
イル状ニクロム線3aとヒータ貫通孔4の周縁との間に大
きな電位差が生じてスパークが発生するおそれがあっ
た。この様なスパークは、特に、加熱調理室1内に調理
物(負荷)がない場合に発生しやすい。In such a structure, at the time of high frequency heating, the high frequency (microwave) propagates through the coiled nichrome wire 3a at the center of the upper heater 3 and is concentrated near the heater through hole 4, whereby the coiled nichrome wire 3a and the heater penetrating hole are penetrated. There is a possibility that a large electric potential difference is generated between the hole 4 and the peripheral edge of the hole 4 and a spark is generated. Such a spark is likely to occur particularly when there is no food (load) in the heating cooking chamber 1.
斯かるスパークの発生を防止する手段として、近年、
第9図に示すように、ヒータ貫通孔4の内側に円筒状の
高周波減衰器6を取付け、この高周波減衰器6によって
上ヒータ3の両側部分を覆うようにしたものがある。As a means for preventing the occurrence of such a spark, in recent years,
As shown in FIG. 9, there is a heater in which a cylindrical high frequency attenuator 6 is mounted inside the heater through hole 4 and the high frequency attenuator 6 covers both sides of the upper heater 3.
(発明が解決しようとする課題) しかしながら、上ヒータ3の両側部分を高周波減衰器
6で覆ってしまうと、その高周波減衰器6で覆われた部
分は、上ヒータ3の輻射熱が遮られて調理物の加熱に寄
与できないため、上ヒータ3の有効発熱領域が挟められ
て加熱効率が悪くなり、しかも、調理物の周辺部分の加
熱が不十分にないという不具合がある。(Problems to be Solved by the Invention) However, when both sides of the upper heater 3 are covered with the high frequency attenuator 6, the radiant heat of the upper heater 3 is shielded in the portion covered with the high frequency attenuator 6 for cooking. Since it cannot contribute to the heating of the food, there is a problem that the effective heating area of the upper heater 3 is sandwiched and the heating efficiency is deteriorated, and the heating of the peripheral portion of the cooked food is not insufficient.
本発明はこの様な事情を考慮してなされたもので、従
ってその目的は、上ヒータの有効発熱領域を挟めずにヒ
ータ貫通孔周縁部分のスパーク発生を防止できて、スパ
ーク発生防止と上ヒータの加熱性能維持とを両立させ得
るヒータ付高周波加熱調理装置を提供するにある。The present invention has been made in consideration of such circumstances, and therefore an object thereof is to prevent sparks from being generated at the peripheral portion of the heater through hole without sandwiching an effective heating area of the upper heater, thereby preventing the occurrence of sparks and the upper heater. An object of the present invention is to provide a high-frequency heating cooking device with a heater that can achieve both maintenance of heating performance.
[発明の構成] (課題を解決するための手段) 本発明のヒータ付高周波加熱調理装置は、加熱調理室
内の調理物を高周波加熱するマグネトロンと、この加熱
調理室内の上部両側に形成されたヒータ貫通孔に貫通さ
れた管状の上ヒートとを備えたものにおいて、前記加熱
調理室内のヒータ貫通孔の近傍に、高周波反射部を前記
上ヒータ上部側に近接させるように設けたことを特徴と
するものである。[Structure of the Invention] (Means for Solving the Problems) A high-frequency heating cooking device with a heater according to the present invention is a magnetron for high-frequency heating a food in a heating cooking chamber, and heaters formed on both upper sides of the heating cooking chamber. A tubular upper heat that is penetrated through the through hole, characterized in that a high-frequency reflector is provided near the heater through hole in the heating and cooking chamber so as to be close to the upper heater upper side. It is a thing.
(作用) 高周波反射部は上ヒータの上部側に設けられているの
で、上ヒータの下部側は高周波反射部によって遮られる
ことはない。従って、オーブン加熱時に、上ヒータの輻
射熱は、高周波反射部によって遮られることなく調理物
側に照射されるようになり、上ヒータの有効発熱領域は
高周波反射部によって狭められることはない。この場
合、ヒータ貫通孔の近傍においては、高周波反射部が上
ヒータに近接されているので、高周波加熱時には、この
高周波反射部の高周波反射作用により上ヒータ内の発熱
線と高周波反射部との間で高周波を減衰させる減衰器の
作用が生じ、それによってヒータ貫通孔周辺の電界が緩
和されてスパークの発生が防止される。(Operation) Since the high-frequency reflector is provided on the upper side of the upper heater, the lower side of the upper heater is not blocked by the high-frequency reflector. Therefore, when the oven is heated, the radiant heat of the upper heater is radiated to the cooked product without being blocked by the high-frequency reflecting section, and the effective heating area of the upper heater is not narrowed by the high-frequency reflecting section. In this case, in the vicinity of the heater through-hole, the high-frequency reflection portion is close to the upper heater, so during high-frequency heating, the high-frequency reflection function of the high-frequency reflection portion causes a gap between the heating wire in the upper heater and the high-frequency reflection portion. At this time, an action of an attenuator for attenuating the high frequency occurs, whereby the electric field around the heater through hole is relaxed and the generation of sparks is prevented.
(実施例) 以下、本発明の第1実施例を第1図乃至第3図に基づ
いて説明する。(Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
まず、全体の縦断正面図を示す第1図(外箱の図示を
省略している)において、11は内部を加熱調理室12とす
る内箱で、その底部中央には、モータ13によって回転駆
動される回転皿14が配設されている。この回転皿14と内
箱11の底板との間には下ヒータ15が配設されている。一
方、内箱11の右側面部には、導波管16が取着され、この
導波管16にマグネトロン17が固定されている。18は内箱
11の上面中央部に溶接等により取付けられた反射板で、
この反射板18は、第2図に示すように上方に台形状に突
出し且つ左右方向に延びるように形成され、内箱11の上
面部の矩形状開口部11aを通して反射板18の下面側が加
熱調理室12内に開放されている。そして、この反射板18
の内側中央には、ガラス管ヒータからなる上ヒータ19が
左右に延びるように配設されている。この上ヒータ19の
取付溝造は、第3図に示すように、反射板18の端板部18
aに、ヒータ貫通孔20を構成する筒状部20aを外向きに突
出形成し、この筒状部20aに固定した環状の碍子21に上
ヒータ19を支持させると共に、内箱11の上面に固定した
取付板22によって上ヒータ19の左右方向の移動を規制す
るものである。First, in FIG. 1 showing a vertical sectional front view (the outer box is not shown), 11 is an inner box having a heating and cooking chamber 12 inside, and a motor 13 is rotationally driven in the center of the bottom of the box. A rotating dish 14 is provided. A lower heater 15 is arranged between the rotary plate 14 and the bottom plate of the inner box 11. On the other hand, a waveguide 16 is attached to the right side surface of the inner box 11, and a magnetron 17 is fixed to the waveguide 16. 18 is the inner box
With a reflector attached to the center of the upper surface of 11 by welding,
As shown in FIG. 2, this reflection plate 18 is formed so as to project upward in a trapezoidal shape and extend in the left-right direction, and the lower surface side of the reflection plate 18 is cooked through the rectangular opening 11a in the upper surface of the inner box 11. It is open to the inside of chamber 12. And this reflector 18
An upper heater 19 made of a glass tube heater is arranged at the inner center of the so as to extend in the left and right directions. As shown in FIG. 3, the mounting groove of the upper heater 19 is formed by the end plate portion 18 of the reflection plate 18.
In a, a cylindrical portion 20a forming the heater through hole 20 is formed so as to project outward, and an upper insulator 19 is supported by an annular insulator 21 fixed to this cylindrical portion 20a and fixed to the upper surface of the inner box 11. The mounting plate 22 regulates the horizontal movement of the upper heater 19.
而して、加熱調理室12内の両ヒータ貫通孔20の近傍に
は、夫々高周波反射部23が上ヒータ19のガラス管19bの
上部側に近接させるように設けられている。この実施例
では、各高周波反射部23は、金属(例えば鉄、銅、アル
ミニウム等)により半割り筒状に形成されて、上ヒータ
19の上半部を覆うような形態となっており(第2図参
照)、その端部に形成された取付片部23aを反射板18の
端板部18aに溶接等により固着することにより固定され
ている。この場合、各高周波反射部23の左右方向突出寸
法は、マグネトロン17で発生する高周波(マイクロ波)
の波長λの略1/4の長さに設定されている。また、反射
板18の両端板部18a間の寸法は、高周波の波長λの略2
倍の大きさに設定されている。Then, in the vicinity of both heater through holes 20 in the heating and cooking chamber 12, a high frequency reflection portion 23 is provided so as to be close to the upper side of the glass tube 19b of the upper heater 19, respectively. In this embodiment, each high-frequency reflector 23 is made of a metal (for example, iron, copper, aluminum, etc.) in a half-split cylinder shape, and is used as an upper heater.
The upper half of 19 is covered (see FIG. 2), and the mounting piece 23a formed at the end is fixed to the end plate 18a of the reflection plate 18 by welding or the like. Has been done. In this case, the horizontal protrusion size of each high-frequency reflector 23 is the high frequency (microwave) generated by the magnetron 17.
The length is set to approximately 1/4 of the wavelength λ of. Further, the dimension between both end plate portions 18a of the reflection plate 18 is about 2 of the high frequency wavelength λ.
It is set to double size.
上記構成によれば、高周波反射部23は上ヒータ19の上
部側に設けられているので、上ヒータ19の下部側は高周
波反射部23によって遮られることはない。従って、オー
ブン加熱時に、上ヒータ19の輻射熱は、高周波反射部23
によって遮られることなく回転皿14上の調理物側に放射
されるようになり、上ヒータ19の有効発熱領域は高周波
反射部23によって挟められることはない。このため、上
ヒータ19による加熱が無駄なく効率良く行われ、加熱効
率を良好に維持できると共に、調理物の周辺部の加熱不
足も解消できる。According to the above configuration, since the high frequency reflection part 23 is provided on the upper side of the upper heater 19, the lower side of the upper heater 19 is not blocked by the high frequency reflection part 23. Therefore, when the oven is heated, the radiant heat of the upper heater 19 is generated by the high frequency reflection portion 23.
The high heat reflecting portion 23 does not sandwich the effective heat generation area of the upper heater 19 because the radiation is emitted to the food side on the rotary dish 14 without being blocked by the. Therefore, the heating by the upper heater 19 can be efficiently performed without waste, the heating efficiency can be favorably maintained, and insufficient heating of the peripheral portion of the cooked food can be eliminated.
一方、ヒータ貫通孔20の近傍においては、高周波反射
部23が上ヒータ19に近接されているので、この高周波反
射部23の高周波反射作用により上ヒータ19内の発熱線19
aと高周波反射部23との間で高周波を減衰させる減衰器
の作用が生じ、それによってヒータ貫通孔20周辺の電界
が緩和されてスパークの発生が防止される。このような
スパーク発生防止効果は、本発明者の実験結果から確認
されており、特に、上記実施例のように、高周波反射部
23の左右方向突出寸法を高周波の波長λの略1/4の長さ
に設定したときに、スパーク発生防止効果が顕著に高く
なることが確認されている。On the other hand, in the vicinity of the heater through hole 20, since the high frequency reflection portion 23 is close to the upper heater 19, the high frequency reflection action of the high frequency reflection portion 23 causes the heating wire 19 in the upper heater 19 to move.
The action of an attenuator for attenuating the high frequency occurs between a and the high frequency reflection part 23, whereby the electric field around the heater through hole 20 is relaxed and the generation of sparks is prevented. Such a spark generation preventing effect has been confirmed from the experimental results of the present inventor, and in particular, as in the above-mentioned embodiment, the high frequency reflector
It has been confirmed that the spark generation prevention effect is remarkably enhanced when the protruding dimension of 23 in the left-right direction is set to a length of approximately 1/4 of the high-frequency wavelength λ.
尚、上記実施例では、高周波反射部23を半割り筒状に
形成したが、その形状は種々の変形が可能である、例え
ば第4図及び第5図に示す本発明の第2実施例のよう
に、高周波反射部25を略L字形に形成し、この高周波反
射部25を加熱調理室12内のヒータ貫通孔20の近傍に位置
させ且つ上ヒータ19の上部側に近接させて設ける構成と
しても良い。この場合、高周波反射部25は、その垂直部
25a上端の取付片部25bを反射板18の内面に溶接すること
により固定されている。この固定状態において、反射板
18の端板部18aと高周波反射部25の垂直部25aとの間の寸
法は、高周波の波長λの略1/4の長さに設定され、且つ
水平部25cの先端がヒータ貫通孔20に近接している。但
し、水平部25cの先端とヒータ貫通孔20の周縁との間に
は、スパークが発生しない程度の隙間(例えば3〜4mm
程度)の隙間を設けている。これ以外の構成は、第1実
施例と同一である。In the above embodiment, the high frequency reflection portion 23 is formed in a half-split cylinder shape, but the shape can be variously modified, for example, in the second embodiment of the present invention shown in FIGS. 4 and 5. As described above, the high frequency reflection part 25 is formed in a substantially L shape, and the high frequency reflection part 25 is provided in the vicinity of the heater through hole 20 in the cooking chamber 12 and in the vicinity of the upper side of the upper heater 19. Is also good. In this case, the high frequency reflection part 25 is
The mounting piece 25b at the upper end of 25a is fixed to the inner surface of the reflection plate 18 by welding. In this fixed state, the reflector
The dimension between the end plate portion 18a of 18 and the vertical portion 25a of the high frequency reflection portion 25 is set to a length of approximately 1/4 of the wavelength λ of the high frequency, and the tip of the horizontal portion 25c is in the heater through hole 20. Are in close proximity. However, a gap (for example, 3 to 4 mm) between the tip of the horizontal portion 25c and the peripheral edge of the heater through hole 20 to the extent that sparks are not generated.
There is a gap of (about). The other structure is the same as that of the first embodiment.
斯かる第2実施例においても前記第1実施例と同様の
作用効果を得ることができる。Also in such a second embodiment, it is possible to obtain the same effect as that of the first embodiment.
以上述べた第1及び第2実施例では、高周波反射部2
3,25を反射板18とは別の部材で形成したが、例えば第6
図及び第7図に示す本発明の第3実施例のように、反射
板18の左右両側部分を凹状に絞り成形することにより、
高周波反射部26を反射板18に一体に形成するようにして
も良い。この場合、高周波反射部26は断面が円弧状に形
成され、第1実施例と同じく、この高周波反射部26が加
熱調理室12内のヒータ貫通孔20の近傍に位置し且つ上ヒ
ータ19の上部側に近接した形態となっている。この場合
も、高周波反射部26の左右方向寸法を、高周波の波長λ
の略1/4の長さに設定している。これ以外の構成は、第
1実施例と同一である。In the first and second embodiments described above, the high frequency reflector 2
Although 3,25 are formed by a member different from the reflector 18, for example, the sixth
As in the third embodiment of the present invention shown in FIG. 7 and FIG. 7, the left and right side portions of the reflection plate 18 are formed into a concave shape by drawing.
The high frequency reflector 26 may be formed integrally with the reflector 18. In this case, the high-frequency reflection part 26 is formed in an arcuate cross section, and the high-frequency reflection part 26 is located in the vicinity of the heater through hole 20 in the cooking chamber 12 and above the upper heater 19 as in the first embodiment. The form is close to the side. Also in this case, the horizontal dimension of the high-frequency reflector 26 is set to the high-frequency wavelength λ.
The length is set to about 1/4. The other structure is the same as that of the first embodiment.
斯かる第3実施例においても、前記第1実施例と同様
の作用効果を得ることができる。しかも、この場合、高
周波反射部26を反射板18に溶接する必要がないので、組
立能率が向上するという利点がある。Also in the third embodiment, it is possible to obtain the same effect as that of the first embodiment. Moreover, in this case, since it is not necessary to weld the high frequency reflection portion 26 to the reflection plate 18, there is an advantage that the assembly efficiency is improved.
尚、本発明は上記第1乃至第3の各実施例に限定され
るものではなく、例えば、上ヒータ19の支持構造を変更
したり、反射板18の断面形状を変更しても良い等、種々
の変形が可能である。The present invention is not limited to the first to third embodiments described above, and for example, the support structure of the upper heater 19 may be changed, the cross-sectional shape of the reflection plate 18 may be changed, and the like. Various modifications are possible.
[発明の効果] 本発明は以上の説明から明らかなように、加熱調理室
内のヒータ貫通孔の近傍に、高周波反射部を上ヒータの
上部側に近接させるように設けたので、上ヒータの有発
熱領域を狭めずにヒータ貫通孔周縁部分のスパーク発生
を防止できて、スパーク発生防止と上ヒータの加熱性能
維持とを両立させることができる。[Effects of the Invention] As is apparent from the above description, the present invention has the high-frequency reflector provided near the heater through-hole in the cooking chamber so as to be close to the upper side of the upper heater. It is possible to prevent the occurrence of sparks at the peripheral portion of the heater through hole without narrowing the heat generation area, and it is possible to prevent the occurrence of sparks and maintain the heating performance of the upper heater at the same time.
第1図乃至第3図は本発明の第1実施例を示したもの
で、第1図は加熱調理室部分の縦断正面図、第2図は反
射板周辺部分の拡大縦断側面図、第3図は上ヒータの支
持構造部分の拡大縦断正面図であり、第4図及び第5図
は本発明の第2実施例を示したもので、第4図は第1図
相当図、第5図は第2図相当図、第6図及び第7図は本
発明の第3実施例を示したもので、第6図は第1図相当
図、第7図は高周波反射部周辺の破断斜視図である。そ
して、第8図及び第9図は夫々異なる従来例を示す要部
の縦断正面図である。 図面中、11は内箱、12は加熱調理室、14は回転皿、15は
下ヒータ、17はマグネトロン、18は反射板、19は上ヒー
タ、20はヒータ貫通孔、23、25及び26は高周波反射部で
ある。1 to 3 show a first embodiment of the present invention. FIG. 1 is a vertical sectional front view of a heating and cooking chamber portion, and FIG. 2 is an enlarged vertical side view of a peripheral portion of a reflector. FIG. 4 is an enlarged vertical front view of the support structure portion of the upper heater, FIGS. 4 and 5 show a second embodiment of the present invention, and FIG. 4 is a view corresponding to FIG. 1 and FIG. Is a drawing corresponding to FIG. 2, FIGS. 6 and 7 show a third embodiment of the present invention, FIG. 6 is a drawing corresponding to FIG. 1, and FIG. 7 is a cutaway perspective view around the high-frequency reflector. Is. And, FIG. 8 and FIG. 9 are vertical sectional front views of the essential part showing different conventional examples. In the drawing, 11 is an inner box, 12 is a cooking chamber, 14 is a rotating dish, 15 is a lower heater, 17 is a magnetron, 18 is a reflector, 19 is an upper heater, 20 is a heater through hole, 23, 25 and 26 are It is a high frequency reflector.
Claims (1)
グネトロンと、この加熱調理室の上部両側に形成された
ヒータ貫通孔に貫通された管状の上ヒータとを備えたも
のにおいて、前記加熱調理室内のヒータ貫通孔の近傍
に、高周波反射部を前記上ヒータの上部側に近傍させる
ように設けたことを特徴とするヒータ付高周波加熱調理
装置。1. A heating apparatus comprising: a magnetron for heating a cooking object in a heating cooking chamber with high frequency; A high-frequency cooking apparatus with a heater, characterized in that a high-frequency reflector is provided near a heater through-hole in a room so as to be near the upper side of the upper heater.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1101292A JP2563573B2 (en) | 1989-04-20 | 1989-04-20 | High frequency cooking device with heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1101292A JP2563573B2 (en) | 1989-04-20 | 1989-04-20 | High frequency cooking device with heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02279923A JPH02279923A (en) | 1990-11-15 |
JP2563573B2 true JP2563573B2 (en) | 1996-12-11 |
Family
ID=14296771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1101292A Expired - Lifetime JP2563573B2 (en) | 1989-04-20 | 1989-04-20 | High frequency cooking device with heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2563573B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002243168A (en) * | 2001-02-13 | 2002-08-28 | Matsushita Electric Ind Co Ltd | High-frequency heat cooking device |
KR100437421B1 (en) * | 2002-02-08 | 2004-06-25 | 주식회사 엘지이아이 | Gas oven range having heater |
EP2852251A4 (en) * | 2012-05-15 | 2015-06-03 | Panasonic Ip Man Co Ltd | Microwave heating device |
WO2017049014A1 (en) * | 2015-09-15 | 2017-03-23 | De Luca Oven Technologies, Llc | Microwave wire mesh oven |
-
1989
- 1989-04-20 JP JP1101292A patent/JP2563573B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02279923A (en) | 1990-11-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4410779A (en) | Combination microwave oven control system | |
CA1163682A (en) | Microwave oven feed system | |
JP2563573B2 (en) | High frequency cooking device with heater | |
US4326112A (en) | Microwave oven having a tubular L-shaped antenna | |
US4358653A (en) | Combination microwave oven | |
US6153866A (en) | Microwave oven with a grilling device | |
CA1114453A (en) | Combination microwave and resistively heated oven | |
JP5355205B2 (en) | Cooker | |
JP2513829B2 (en) | High frequency cooking device with heater | |
JP5957680B2 (en) | Microwave heating device | |
JP5169015B2 (en) | Microwave heating device | |
JP3237264B2 (en) | Heating equipment | |
JP2507049B2 (en) | Heating cooker | |
US11985753B2 (en) | Oven | |
JPS63225494A (en) | Heating cooker | |
JPS59217989A (en) | High frequency heater with electric heater | |
JP2538583B2 (en) | Cooking device | |
JP4135572B2 (en) | Cooker | |
KR100662304B1 (en) | microwave oven | |
JPS6210517A (en) | Heating and cooking unit | |
JPS608395Y2 (en) | High frequency heating device | |
JPH035628A (en) | High frequency heat cooking device having heater | |
JPH08148273A (en) | Microwave oven | |
JP2001297859A (en) | Heating device | |
JP2001296027A (en) | Heating device |