JPH0542795B2 - - Google Patents
Info
- Publication number
- JPH0542795B2 JPH0542795B2 JP60241070A JP24107085A JPH0542795B2 JP H0542795 B2 JPH0542795 B2 JP H0542795B2 JP 60241070 A JP60241070 A JP 60241070A JP 24107085 A JP24107085 A JP 24107085A JP H0542795 B2 JPH0542795 B2 JP H0542795B2
- Authority
- JP
- Japan
- Prior art keywords
- heating chamber
- convex portion
- magnetron
- waveguide
- heating
- 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
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- Constitution Of High-Frequency Heating (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、高周波を利用して食品を加熱調理す
る高周波加熱装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high-frequency heating device for cooking food using high-frequency waves.
従来の技術
マグネトロンで発生した高周波を、導波管を用
いて加熱室内へ供給する高周波加熱装置では、第
４図に示すように、マグネトロン１９で発生した
高周波は、導波管２０を介して加熱室２１の壁面
に設けた給電口２２より加熱室２１内へ供給され
る。一方、加熱室２１の内底部には、被加熱物２
２を載置し加熱室２１外に設けたモータ２３によ
つて回転駆動するターンテーブル２４を配設して
いた。また、前記マグネトロン１９や高圧トラン
ス（図示せず）等の電源部品は、加熱室２１の壁
面と装置本体の外装２５ａ，２５ｂとの間に設け
た機械室２６に収容し、冷却フアン２７によつて
冷却する構成となつていた。Prior Art In a high-frequency heating device that supplies high-frequency waves generated by a magnetron into a heating chamber using a waveguide, as shown in FIG. Power is supplied into the heating chamber 21 from a power supply port 22 provided on the wall of the chamber 21 . On the other hand, at the inner bottom of the heating chamber 21, the object to be heated 2
A turntable 24 was provided on which 2 was placed and rotated by a motor 23 provided outside the heating chamber 21. Further, power supply parts such as the magnetron 19 and a high voltage transformer (not shown) are housed in a machine room 26 provided between the wall of the heating chamber 21 and the exteriors 25a and 25b of the main body of the apparatus, and are operated by a cooling fan 27. It was designed to be cooled by cooling.
発明が解決しようとする問題点
ところが、このような高周波加熱装置では次の
ような問題を有している。Problems to be Solved by the Invention However, such a high frequency heating device has the following problems.
(1) 加熱室２１は略直方体であるため、単一共振
モードが生じ、しかも加熱室２１を構成する壁
面は平面であり、電波の反射も単純なものとな
り易いため、ターンテーブル２４だけの均一加
熱手段では、例えば卵料理（茶わん蒸し等）や
解凍等のきめ細かな加熱を必要とする調理に際
しては、加熱ムラが生じ易かつた。(1) Since the heating chamber 21 is approximately a rectangular parallelepiped, a single resonance mode occurs, and since the wall surface constituting the heating chamber 21 is flat, the reflection of radio waves tends to be simple, so the uniformity of the turntable 24 alone With the heating means, uneven heating tends to occur, for example, when cooking eggs (such as steamed egg custard) or defrosting, which require careful heating.
(2) 装置全体の大きさは、ほぼ加熱室２１と機械
室２６とで決定づけられ、加熱室２１の容積を
変えること無く装置の小型化を画るためには、
機械室２６の容積の縮少が必要である。しか
し、機械室２６側へ導波管２０が突出している
ため冷却風路の障害物となり、結果としてマグ
ネトロン１９等の電源部品の冷却効率も悪くな
り、電源部品ならびに機械室の小型縮小化が難
しかつた。(2) The overall size of the device is determined by the heating chamber 21 and the machine room 26, and in order to downsize the device without changing the volume of the heating chamber 21,
It is necessary to reduce the volume of the machine room 26. However, since the waveguide 20 protrudes toward the machine room 26 side, it becomes an obstruction to the cooling air path, and as a result, the cooling efficiency of power supply components such as the magnetron 19 becomes poor, making it difficult to downsize the power supply components and the machine room. It was.
本発明は、このような従来の問題を解消するも
のであり、簡単な構成で均一加熱性に優れ、しか
も使い勝手の良い高周波加熱装置を提供すること
を目的とするものである。 The present invention solves these conventional problems, and aims to provide a high-frequency heating device that has a simple configuration, has excellent uniform heating properties, and is easy to use.
問題点を解決するための手段
本発明の高周波加熱装置は、加熱室壁面に1/4
λ以上の幅を有する凸部を設け、その凸部の裏面
に対向してマグネトロンアンテナを配設したもの
である。Means for Solving the Problems The high frequency heating device of the present invention has a 1/4
A convex portion having a width of λ or more is provided, and a magnetron antenna is disposed opposite to the back surface of the convex portion.
作 用
本発明の高周波加熱装置は、加熱室壁面に凸部
を設けたことによつて加熱室内の電波の乱反射が
促進され、さらに加熱室内に生ずる共振モードも
歪曲し、ターンテーブル周回後の均一加熱性が向
上する。また、前記凸部裏面にマグネトロンアン
テナの一部を収容することができるため、導波管
の薄型化が画れ、機械室の冷却性能の向上と装置
全体の小型化が達成できる効果を有するものであ
る。Effect of the high-frequency heating device of the present invention, by providing the convex portion on the heating chamber wall surface, diffuse reflection of radio waves within the heating chamber is promoted, and the resonance mode generated within the heating chamber is also distorted, so that uniformity after rotation of the turntable is improved. Heating properties are improved. In addition, since a part of the magnetron antenna can be accommodated on the back surface of the convex portion, the waveguide can be made thinner, which has the effect of improving the cooling performance of the machine room and downsizing the entire device. It is.
実施例
以下、本発明の一実施例の高周波加熱装置を図
面を参照して説明する。Embodiment Hereinafter, a high frequency heating device according to an embodiment of the present invention will be described with reference to the drawings.
第１図から第３図に示すように、加熱室１の前
面開口部には開閉自在なドア２が設けられ、加熱
室１内の内底部には被加熱物３を載置しモータ４
で回転するターンテーブル５が配設されている。
加熱室１の壁面６には、加熱室１の内側へ突出し
高周波波長をλとしたとき幅l1を1/4λ以上とし
た凸部７を設け、この凸部７の裏面に対向してマ
グネトロン８のアンテナ９を配設し、マグネトロ
ン８で発生した高周波は導波管１０を介して給電
口１１より加熱室１内へ供給される。また、マグ
ネトロン８や高圧トランス１２等の電源部品は、
装置の外装１３ａ，１３ｂ，１３ｃと側壁面６と
で囲まれた機械室１４内に収容し、冷却フアン１
５によつて冷却される。 As shown in FIGS. 1 to 3, a door 2 that can be freely opened and closed is provided at the front opening of the heating chamber 1, and an object to be heated 3 is placed on the inner bottom of the heating chamber 1, and a motor 4 is mounted.
A turntable 5 is provided which rotates at
The wall surface 6 of the heating chamber 1 is provided with a convex portion 7 that protrudes toward the inside of the heating chamber 1 and has a width l 1 of 1/4λ or more when the high frequency wavelength is λ. 8 antennas 9 are arranged, and the high frequency waves generated by the magnetron 8 are supplied into the heating chamber 1 from a power supply port 11 via a waveguide 10. In addition, power supply parts such as the magnetron 8 and high voltage transformer 12,
The cooling fan 1 is housed in a machine room 14 surrounded by the exteriors 13a, 13b, 13c of the device and the side wall surface 6.
5.
装置本体の前部には操作部１６、給電口１１に
は低誘電体から成る仕切板１７、冷却フアン１５
後部の外装１３ｂには吸気孔１８がそれぞれ配設
されている。 The front part of the main body of the device includes an operation section 16, a partition plate 17 made of a low dielectric material at the power supply port 11, and a cooling fan 15.
Intake holes 18 are provided in the rear exterior 13b.
なお、導波管１０は加熱室１の外側の壁面６に
取り付けられ、導波管の一部を構成する加熱室１
の壁面６に設けた凸部７の裏面に対向してマグネ
トロン８のアンテナ９が位置するよう、マグネト
ロン８を導波管１０に取付けている。また、凸部
７は加熱室１の天井面からターンテーブル５の外
周に至る垂線より外側に設けてある。 Note that the waveguide 10 is attached to the outer wall surface 6 of the heating chamber 1, and the heating chamber 1 forming a part of the waveguide
The magnetron 8 is attached to the waveguide 10 so that the antenna 9 of the magnetron 8 is located opposite the back surface of the convex portion 7 provided on the wall surface 6 of the waveguide. Further, the convex portion 7 is provided outside a perpendicular line extending from the ceiling surface of the heating chamber 1 to the outer periphery of the turntable 5.
以上のような構成によれば、凸部７は電界密度
の高い給電口１１に近接して同一の側壁面６に設
けることにより、給電口１１から放射される電波
が凸部７で乱反射され、さらに加熱室１内に発生
する共振モードの電界分布も歪曲し、ターンテー
ブル５の周回後の均一加熱性能が向上する。一
方、マグネトロン８のアンテナ９は凸部７の裏面
に対向して配設しているため、アンテナ９の一部
を凸部７の裏面側に収容することが可能となり、
導波管１０の高さを低くしてもアンテナ８と側壁
面６との距離は近づかないためスパークの危険性
も無く、導波管１０によつて機械室１４内の冷却
風路を狭めることも少なくなり、冷却効率も向上
する。 According to the above configuration, by providing the convex portion 7 on the same side wall surface 6 in close proximity to the power feed port 11 where the electric field density is high, the radio waves radiated from the power feed port 11 are diffusely reflected by the convex portion 7. Furthermore, the electric field distribution of the resonance mode generated in the heating chamber 1 is also distorted, and the uniform heating performance after the turntable 5 is rotated is improved. On the other hand, since the antenna 9 of the magnetron 8 is arranged facing the back surface of the convex portion 7, it is possible to accommodate a part of the antenna 9 on the back surface side of the convex portion 7.
Even if the height of the waveguide 10 is lowered, the distance between the antenna 8 and the side wall surface 6 does not get closer, so there is no danger of sparks, and the waveguide 10 narrows the cooling air path in the machine room 14. This also improves cooling efficiency.
さらに、導波管１０の高さを低くすることによ
つて機械室１３の幅l2も小さく出来、装置全体の
小型化や設置占有面積の縮小が画れる。 Furthermore, by lowering the height of the waveguide 10, the width l2 of the machine room 13 can also be reduced, making it possible to downsize the entire device and reduce the installation footprint.
なお、凸部６はターンテーブル４の外周に下ろ
した垂線より外側に設けており、加熱室１の実質
的な有効容積を減少させないため、使い勝手を損
うことは無い。 Note that the convex portion 6 is provided outside the perpendicular line drawn to the outer periphery of the turntable 4, and does not reduce the substantial effective volume of the heating chamber 1, so that it does not impair usability.
発明の効果
以上のように本発明の高周波加熱装置は、加熱
室の壁面に高周波波長の1/4λ以上の幅を有する
凸部を配設し、この凸部の裏面に対向してマグネ
トロンのアンテナを設けたものであり、次のよう
な効果を有するため使い勝手に優れた高周波加熱
装置が提供できる。Effects of the Invention As described above, in the high-frequency heating device of the present invention, a convex portion having a width of 1/4λ or more of the high-frequency wavelength is provided on the wall surface of the heating chamber, and the magnetron antenna is placed opposite to the back surface of the convex portion. It is possible to provide a high-frequency heating device that is easy to use because it has the following effects.
(1) 凸部によつて加熱室内の高周波の乱反射が促
進され、さらに加熱室内に生ずる共振モードも
歪曲し、ターンテーブル周回後の均一加熱性が
向上する。(1) The convex portion promotes diffuse reflection of high frequency waves within the heating chamber, and also distorts the resonance mode generated within the heating chamber, improving uniform heating after the turntable rotates.
(2) マグネトロンアンテナは、加熱室内に突出す
る凸部に一部を収容できるため導波管の薄形化
が画れ、結果として導波管によつて機械室内の
冷却風路を阻害することが少なくなり冷却効率
が向上するとともに、加熱室の容積をほとんど
犠牲にすること無く装置全体の小型化や設置占
有面積の縮小が画る。(2) Since the magnetron antenna can be partially housed in the convex part that protrudes into the heating chamber, the waveguide can be made thinner, and as a result, the waveguide can obstruct the cooling air path inside the machine room. This reduces the amount of heat generated, improving cooling efficiency, and allows the entire device to be more compact and occupy less space without sacrificing much of the volume of the heating chamber.
(3) マグネトロンは導波管に取り付けられている
ため、加熱室内に突出する凸部の高さは、アテ
テナ高さに直接関係なく導波管の高さを変える
ことにより任意に選定でき、加熱ムラの状況に
応じて凸部の形状を設定することが可能とな
る。(3) Since the magnetron is attached to a waveguide, the height of the protrusion protruding into the heating chamber can be arbitrarily selected by changing the height of the waveguide, regardless of the antenna height. It becomes possible to set the shape of the convex portion depending on the situation of unevenness.
(4) マグネトロンは導波管に取り付けられている
ため、マグネトロンの作動に伴う自己発熱は導
波管を介して加熱室の壁面に伝わるため、加熱
室壁面の温度上昇を低下させることができる。(4) Since the magnetron is attached to a waveguide, the self-heating generated by the magnetron's operation is transmitted to the wall of the heating chamber via the waveguide, thereby reducing the temperature rise on the wall of the heating chamber.
第１図は本発明の一実施例における高周波加熱
装置の平面断面図、第２図は同Ａ−A′線におけ
る断面図、第３図は同外観斜視図、第４図は従来
の高周波加熱装置を示す正面断面図である。
１……加熱室、３……被加熱物、５……ターン
テーブル、６……壁面、７……凸部、８……マグ
ネトロン、９……アンテナ、１０……導波管、１
３……外装、１５……冷却フアン。
Fig. 1 is a plan sectional view of a high-frequency heating device according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A', Fig. 3 is a perspective view of the same, and Fig. 4 is a conventional high-frequency heating device. FIG. 3 is a front sectional view showing the device. DESCRIPTION OF SYMBOLS 1... Heating chamber, 3... Heated object, 5... Turntable, 6... Wall surface, 7... Convex part, 8... Magnetron, 9... Antenna, 10... Waveguide, 1
3...Exterior, 15...Cooling fan.
Claims (1)
壁面に設けた給電口と、高周波を発生するマグネ
トロンや高圧トランス等の電源部品と、その電源
部品を冷却する冷却フアンと、前記加熱室の外側
の壁面に取付けられ、前記マグネトロンで発生し
た高周波を前記給電口に導く導波管と、前記加熱
室内底部に設けられ被加熱物を載置し回転するタ
ーンテーブルと、前記加熱室を覆う外装とを備
え、前記加熱室の壁面に凸部を設け、この凸部は
高周波波長をλとした時に1/4λ以上の幅を有し、
その凸部の裏面に対向して前記マグネトロンのア
ンテナが位置するよう前記マグネトロンを前記導
波管に取付ける構成とした高周波加熱装置。 ２ 給電口と凸部は加熱室を構成する同一壁面に
設ける構成とした特許請求の範囲第１項記載の高
周波加熱装置。 ３ 凸部は、加熱室の天井面からターンテーブル
の外周に下ろした垂線より外側に設ける構成とし
た特許請求の範囲第１項記載の高周波加熱装置。[Scope of Claims] 1. A heating chamber that stores an object to be heated, a power supply port provided on the wall of the heating chamber, power supply components such as a magnetron or high-voltage transformer that generates high frequency waves, and a cooling device that cools the power supply components. a fan, a waveguide attached to the outer wall of the heating chamber and guiding high frequency waves generated by the magnetron to the power supply port, and a turntable provided at the bottom of the heating chamber on which an object to be heated is placed and rotated. , an exterior covering the heating chamber, a convex portion is provided on the wall surface of the heating chamber, and the convex portion has a width of 1/4λ or more when the high frequency wavelength is λ,
The high-frequency heating device is configured such that the magnetron is attached to the waveguide so that the antenna of the magnetron is located opposite the back surface of the convex portion. 2. The high-frequency heating device according to claim 1, wherein the power feeding port and the convex portion are provided on the same wall surface constituting the heating chamber. 3. The high-frequency heating device according to claim 1, wherein the convex portion is provided outside a perpendicular line drawn from the ceiling surface of the heating chamber to the outer periphery of the turntable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241070A JPS62100982A (en) | 1985-10-28 | 1985-10-28 | Radio frequency heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241070A JPS62100982A (en) | 1985-10-28 | 1985-10-28 | Radio frequency heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62100982A JPS62100982A (en) | 1987-05-11 |
| JPH0542795B2 true JPH0542795B2 (en) | 1993-06-29 |
Family
ID=17068847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60241070A Granted JPS62100982A (en) | 1985-10-28 | 1985-10-28 | Radio frequency heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62100982A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004265616A (en) | 2003-02-05 | 2004-09-24 | Matsushita Electric Ind Co Ltd | Microwave heating equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226283Y2 (en) * | 1973-12-18 | 1977-06-15 | ||
| JPS5329556Y2 (en) * | 1974-08-20 | 1978-07-24 |
-
1985
- 1985-10-28 JP JP60241070A patent/JPS62100982A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62100982A (en) | 1987-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |