JPS6271191A - High frequency heater - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 Ｃ産業上の利用分野〕 この発明は、食品等を電波によって加熱する高周波加熱
装置に関するものである。[Detailed Description of the Invention] C. Industrial Application Field] The present invention relates to a high-frequency heating device for heating foods and the like using radio waves.

〔従来の技術〕[Conventional technology]

第５図は、例えば特開昭５８−４６２４２号公報に示さ
れた従来の高周波加熱装置のドアを開け、食品載置棚の
一部を破断して示す斜視図、第６図は第４図の要部を示
す断面図である。これらの図において、１は筐体、２は
筐体１内に設けた加熱室、３はこの加熱室２のドア、４
は筺体１と加熱室形成側壁との間の空間に設けた高周波
発信器、４ａはこの高周波発信器４のプローブ、５は加
熱室２の底壁２ａの下方に位置し前記プローブが臨んで
いる導波管、６，７．８はこの導波管５と加熱室２とを
連通ずるように加熱室の底壁２ａに設けた結合孔、９は
モータ１０により回転させられるアンテナである。FIG. 5 is a perspective view of a conventional high-frequency heating device disclosed in, for example, Japanese Patent Application Laid-open No. 58-46242, with the door opened and a part of the food shelf cut away. FIG. In these figures, 1 is a housing, 2 is a heating chamber provided in the housing 1, 3 is a door of this heating chamber 2, and 4 is a heating chamber provided in the housing 1.
1 is a high frequency transmitter provided in the space between the housing 1 and the heating chamber forming side wall, 4a is a probe of this high frequency transmitter 4, and 5 is located below the bottom wall 2a of the heating chamber 2, facing the probe. The waveguides 6, 7 and 8 are coupling holes provided in the bottom wall 2a of the heating chamber so as to communicate the waveguide 5 and the heating chamber 2, and 9 is an antenna rotated by the motor 10.

この高周波加熱装置では、高周波発振器４がプローブ４
ａを介して導波管５に電波を供給し、この電波は導波管
５を伝１般する途中で、結合孔６゜７．８を通って加熱
室２内に放射され、食品載置棚１１上に置かれた食品を
加熱する。このとき、アンテナ９は各結合孔からの電波
を放射し易くするとともに、回転することによって放射
される電波の分布を時間的に変化させ、これによって加
熱むらを少なくしている。又結合孔６，７から異なる方
向に電波が放射され、これにより加熱むらの減少を図っ
ている。In this high frequency heating device, the high frequency oscillator 4 is connected to the probe 4.
A radio wave is supplied to the waveguide 5 through the waveguide 5, and while the radio wave is propagating through the waveguide 5, it passes through the coupling hole 6°7.8 and is radiated into the heating chamber 2, where the food is placed. Food placed on the shelf 11 is heated. At this time, the antenna 9 makes it easier to radiate radio waves from each coupling hole, and changes the distribution of the radiated radio waves over time by rotating, thereby reducing heating unevenness. Furthermore, radio waves are emitted from the coupling holes 6 and 7 in different directions, thereby reducing uneven heating.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来の高周波加熱装置は上記のように構成されているの
で、部品点数が多くかつ可動機構を有することから高価
であり、さらに故障の発生率が高いという問題をもち、
又、導波管に沿った直線的な位置にしか結合孔を設ける
ことができないため、複数の結合孔から電波を放射する
ことによる加熱むらの減少が不十分であった。Conventional high-frequency heating devices have the above-mentioned structure, so they are expensive because they have a large number of parts and have movable mechanisms, and they also have the problem of a high failure rate.
Furthermore, since the coupling holes can only be provided at linear positions along the waveguide, it has been insufficient to reduce uneven heating caused by radiating radio waves from a plurality of coupling holes.

この発明は、上記の問題点を解消するためになされたも
ので、安価で故障率が低く、加熱むらが少ない高周波加
熱装置を得ることを目的とする。This invention was made to solve the above problems, and aims to provide a high-frequency heating device that is inexpensive, has a low failure rate, and has less uneven heating.

〔問題を解決するための手段〕[Means to solve the problem]

この発明の高周波加熱装置は、上記の目的達成のために
、加熱室の上部位置に、底壁と対向してラジアル線路を
形成する平坦状の導体部材を設け、上記導体部材にほぼ
均一に分布する孔を形成するとともに、上記ラジアル線
路に高周波発振器のプローブを臨ませた構成を具備する
。In order to achieve the above-mentioned object, the high-frequency heating device of the present invention provides a flat conductor member that forms a radial line in an upper position of the heating chamber, facing the bottom wall, and is distributed almost uniformly on the conductor member. A hole is formed therein, and a probe of a high frequency oscillator is exposed to the radial line.

〔作用〕[Effect]

この発明の高周波加熱装置は、上記構成を具備するので
、導体部材と加熱室の底壁とで形成されるラジアル線路
内に放射された電波は、均一に分布された導体部材の孔
を介して食品載置棚上に置かれた食品を広範囲より加熱
する。Since the high-frequency heating device of the present invention has the above configuration, the radio waves radiated into the radial line formed by the conductor member and the bottom wall of the heating chamber are transmitted through the uniformly distributed holes of the conductor member. To heat food placed on a food shelf over a wide range.

〔実施例〕〔Example〕

以下にこの発明の１実施例を図面により説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第１図はこの発明の１実施例において加熱室のドアを開
き、食品載置棚を一部破断して示す斜視図、第２図はそ
の要部を示す正面断面図である。FIG. 1 is a partially cutaway perspective view showing a food shelf with the door of the heating chamber opened and FIG. 2 a front sectional view showing the main parts thereof in an embodiment of the present invention.

これらの図において、第５図と同じものは同一符号を用
いている。１２は加熱室２の底壁２ａの上部位置に設け
た平坦状の導体部材で、この実施例では、食品載置棚１
１の下面に、印刷、焼成、接着、蒸着等により一体化し
た導体膜より成る。この導体膜に代えて、導体板とする
こともできる。In these figures, the same parts as in FIG. 5 are designated by the same reference numerals. Reference numeral 12 denotes a flat conductor member provided at the upper part of the bottom wall 2a of the heating chamber 2, and in this embodiment, the food shelf 1
It consists of a conductive film integrated on the lower surface of 1 by printing, baking, adhesion, vapor deposition, etc. Instead of this conductor film, a conductor plate may be used.

この導体部材１２と底壁２ａとでラジアル線路１４を構
成する。１３は上記導体部材１２にほぼ均一に分布して
設けた孔（結合孔）で、この実施例では第３図に示すよ
うに、均一に分布された円孔より成るが、第４図に示す
ように、印形状１３ａ、長方形状１３ｂ、四角形状１３
ｃ、三角形状１３ｄ、十字形状１’３ｅ等の種々の形状
の孔を取りまぜて設けてもよい。結合孔の形状がどのよ
うであれ、結合孔は、その共振周波数が電波の使用周波
数より低くなるような大きさをもつ。This conductor member 12 and the bottom wall 2a constitute a radial line 14. Reference numeral 13 denotes holes (coupling holes) provided in the conductor member 12 in a substantially uniform distribution.In this embodiment, as shown in FIG. As shown, a mark shape 13a, a rectangular shape 13b, a square shape 13
Holes of various shapes such as 1'3c, triangular 13d, and cross 1'3e may be provided. Regardless of the shape of the coupling hole, the coupling hole has a size such that its resonant frequency is lower than the operating frequency of the radio wave.

高周波発振器４は、加熱室の底壁２ａのほぼ中央部に取
付けてあり、プローブ４ａは、底壁２ａと導体部材１２
とで構成するラジアル線路に臨む位置にある。The high frequency oscillator 4 is attached to the approximate center of the bottom wall 2a of the heating chamber, and the probe 4a is connected to the bottom wall 2a and the conductor member 12.
It is located facing the radial track consisting of and.

なお、１５はプローブ４ａに取付けた導体アダプタであ
る。Note that 15 is a conductor adapter attached to the probe 4a.

この実施例の高周波加熱装置は上記の構成を具備してい
るので、高周波発振器４がプローブ４ａを介してラジア
ル線路１４に電波を供給し、この電波は、２次元的にほ
ぼ均一に分布する結合孔１３．１３．・・・から放射さ
れ１食品載置棚上の食品には多方面から電波が供給され
るので、この食品はむらなく加熱される。前記の導体ア
ダプタ１５は高周波発信器４から効率よく加熱室２に電
波が供給されるように調整する上で効果がある。Since the high-frequency heating device of this embodiment has the above-mentioned configuration, the high-frequency oscillator 4 supplies radio waves to the radial line 14 via the probe 4a, and the radio waves are coupled with a substantially uniform distribution in two dimensions. Hole 13.13. Since radio waves are emitted from multiple directions and are supplied to the food on one food shelf, the food is heated evenly. The conductor adapter 15 described above is effective in adjusting so that radio waves are efficiently supplied from the high frequency oscillator 4 to the heating chamber 2.

上記実施例では導体部材を食品載置棚に一体化して設け
たが、食品載置棚と底壁２ａとの間に支持する構成であ
ってもよい。In the above embodiment, the conductor member is integrated with the food shelf, but it may be supported between the food shelf and the bottom wall 2a.

〔効果〕〔effect〕

この発明の高周波加熱装置は、加熱室の底壁の上部位置
に、底壁と対向してラジアル線路を形成する平坦状の導
体部材を設け、上記導体部材にほぼ均一に分布する孔を
形成したので、部品点数が少なく、可動機構がないこと
からコストダウンが図れるとともに故障発生率が低下し
、かつ電波が２次元的に伝搬して加熱室内に均等に放射
されることから加熱むらがないという諸効果を奏する。The high-frequency heating device of the present invention is provided with a flat conductor member forming a radial line opposite the bottom wall at an upper position of the bottom wall of the heating chamber, and holes which are almost uniformly distributed are formed in the conductor member. The number of parts is small and there is no moving mechanism, which reduces costs and reduces the failure rate, and since radio waves propagate two-dimensionally and are evenly radiated into the heating chamber, there is no uneven heating. It has various effects.

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

第１図はこの発明の１実施例において加熱室のドアを開
き、食品載置棚を一部破断して示す斜視図、第２図はそ
の要部を示す正面断面図、第３図は導体部材の平面図、
第４図は導体部材の他の例の平面図、第５図は従来例の
第１図と同様な斜視図、第６図は第５図の要部を示す正
面断面図である。 ２・・・・・・加熱室、２ａ・・・・・・加熱室の底壁
、４・・・・・・高周波発信器、４ａ・・・・・・プロ
ーブ、１１・・・・・・食品載置棚、１２・・・・・・
導体部材、１３．１３ａ、・・・１３ｅ・・・・・・孔
（結合孔）、１４・・・・・・ラジアル線路。Fig. 1 is a partially cutaway perspective view of the food storage shelf with the door of the heating chamber opened in one embodiment of the present invention, Fig. 2 is a front sectional view showing the main parts thereof, and Fig. 3 is a conductor. plan view of the member;
4 is a plan view of another example of the conductor member, FIG. 5 is a perspective view similar to FIG. 1 of the conventional example, and FIG. 6 is a front sectional view showing the main part of FIG. 5. 2... Heating chamber, 2a... Bottom wall of the heating chamber, 4... High frequency oscillator, 4a... Probe, 11... Food shelf, 12...
Conductor members, 13.13a,...13e...holes (coupling holes), 14...radial line.

Claims (3)

【特許請求の範囲】[Claims] （１）加熱室と、この加熱室の底壁の上部位置に設けら
れた食品載置棚と、高周波発振器とを備えた高周波加熱
装置において、 上記底壁の上部位置に、底壁と対向して底壁とでラジア
ル線路を形成する平坦状の導体部材を設け、上記導体部
材にほぼ均一に分布する孔を形成するとともに、上記ラ
ジアル線路に高周波発振器のプローブを臨ませたことを
特徴とする高周波加熱装置。(1) In a high-frequency heating device including a heating chamber, a food storage shelf provided at an upper position of the bottom wall of the heating chamber, and a high-frequency oscillator, a high-frequency oscillator is provided at an upper position of the bottom wall, facing the A flat conductor member is provided which forms a radial line with the bottom wall, holes are formed in the conductor member to be substantially uniformly distributed, and a probe of a high frequency oscillator is made to face the radial line. High frequency heating device. （２）導体部材は食品載置棚の下面に一体化された導体
膜又は導体板より成ることを特徴とする特許請求の範囲
第１項記載の高周波加熱装置。(2) The high-frequency heating device according to claim 1, wherein the conductor member comprises a conductor film or a conductor plate integrated with the lower surface of the food shelf. （３）高周波発振器のプローブは、底壁中央に位置する
ことを特徴とする特許請求の範囲第１項記載の高周波加
熱装置。(3) The high-frequency heating device according to claim 1, wherein the probe of the high-frequency oscillator is located at the center of the bottom wall.