JPS5824398Y2 - High frequency heating device - Google Patents

High frequency heating device

Info

Publication number
JPS5824398Y2
JPS5824398Y2 JP1980086443U JP8644380U JPS5824398Y2 JP S5824398 Y2 JPS5824398 Y2 JP S5824398Y2 JP 1980086443 U JP1980086443 U JP 1980086443U JP 8644380 U JP8644380 U JP 8644380U JP S5824398 Y2 JPS5824398 Y2 JP S5824398Y2
Authority
JP
Japan
Prior art keywords
surface wave
wave line
heating chamber
radio wave
axis direction
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
Application number
JP1980086443U
Other languages
Japanese (ja)
Other versions
JPS5698U (en
Inventor
博文 吉村
晃久 高野
昇 倉田
慈 楠木
Original Assignee
松下電器産業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP1980086443U priority Critical patent/JPS5824398Y2/en
Publication of JPS5698U publication Critical patent/JPS5698U/ja
Application granted granted Critical
Publication of JPS5824398Y2 publication Critical patent/JPS5824398Y2/en
Expired legal-status Critical Current

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  • Constitution Of High-Frequency Heating (AREA)

Description

【考案の詳細な説明】 産業上の利用分野 本考案は電波の表面波を用いて被加熱物を加熱する高周
波加熱装置に関するものである。
[Detailed Description of the Invention] Industrial Application Field The present invention relates to a high-frequency heating device that heats an object by using surface waves of radio waves.

従来例の構成とその問題点 従来、この種表面波を用いた高周波加熱装置としては、
第1図に示すような構造が一般的であった。
Conventional configuration and its problems Conventionally, high-frequency heating devices using this type of surface wave:
The structure shown in Figure 1 was common.

以下その具体構成を図にもとづいて説明すると、1は加
熱室、2は加熱室1の前面開口部を覆う開閉自在なドア
ー、3はマグネトロン等の電波発振器、4は導波管、5
は電波を低損失で透過させる物質、たとえばガラス、ア
クリル等で構成された被加熱物載置台、6は載置台5に
載置された被加熱物、7は加熱室1を共振させるための
開口アンテナ、8は表面波を励起する表面波線路である
The specific configuration will be explained below based on the drawings. 1 is a heating chamber, 2 is a door that can be opened and closed to cover the front opening of the heating chamber 1, 3 is a radio wave oscillator such as a magnetron, 4 is a waveguide, and 5 is a door that can be opened and closed.
Reference numeral 1 indicates an object mounting table made of a material that transmits radio waves with low loss, such as glass or acrylic, 6 indicates an object to be heated placed on the mounting table 5, and 7 indicates an opening for making the heating chamber 1 resonate. The antenna 8 is a surface wave line that excites surface waves.

なお、表面波とは第2図の代表的な表面波線路に示すよ
うに、電波が伝搬する周期構造体から距離的に離れるに
従って、その電波エネルギーが指数関数的に減少する特
性をもっている。
Note that, as shown in a typical surface wave line in FIG. 2, surface waves have the characteristic that the radio wave energy decreases exponentially as the distance from the periodic structure through which the radio waves propagate increases.

それ故、この表面波を加熱室内に用いると、電波エネル
ギーは表面波線路8の近傍に著しく集中するので、食品
6を調理する場合には効率が良いだけでなぐ、コゲ目を
つけることができる。
Therefore, when this surface wave is used in the heating chamber, the radio wave energy is significantly concentrated in the vicinity of the surface wave line 8, so when cooking the food 6, it is not only efficient, but also burnt. .

□しがし、加熱室内に表面波線路8を設ける場合には、
表面波線路8の励振方法が困難になる。
□However, when installing the surface wave line 8 in the heating chamber,
This makes the method of exciting the surface wave line 8 difficult.

それは、加熱室1が空胴共振器として働くために、加熱
室内ではその寸法によって決まる一定の電磁界共振モー
ドが立つために、表面波モードが弱いと、これを無視す
るか、又は打ち消してしまうからである。
Because the heating chamber 1 acts as a cavity resonator, a certain electromagnetic field resonance mode exists within the heating chamber depending on its dimensions, so if the surface wave mode is weak, it will be ignored or canceled out. It is from.

その結果、表面波線路8を伝搬する電波エネルギーは、
食品の負荷としての影響も加って、少くなり前記の表面
波を用いた加熱器としての効果がなくなることになる。
As a result, the radio wave energy propagating through the surface wave line 8 is
The effect of the food load is also reduced, and the effect as a heater using surface waves is lost.

しかるに第1図に示す従来の構成では、導波管4が直接
加熱室1に結合されているため、電波がその結合面で導
波管4の方に反射され易く、上述の欠点を生じる欠点が
あった。
However, in the conventional configuration shown in FIG. 1, since the waveguide 4 is directly coupled to the heating chamber 1, radio waves are likely to be reflected toward the waveguide 4 at the coupling surface, resulting in the above-mentioned drawbacks. was there.

また導波管内では表面波線路8の上方一定の高さの所に
金属板が存在するのに対し、加熱室内では金属板がない
ために、表面波線路8に沿う電波は、伝搬途中で急激な
条件の変化を受け、結合面で反射され、表面波線路8に
よって伝搬される電波エネルギーは減少する欠点があっ
た。
In addition, in the waveguide, there is a metal plate at a certain height above the surface wave line 8, but in the heating chamber there is no metal plate, so the radio waves along the surface wave line 8 suddenly drop during propagation. There is a drawback that the radio wave energy reflected by the coupling surface and propagated by the surface wave line 8 decreases due to changes in conditions.

考案の目的 本考案は上記従来の問題点を解決するために、電磁ホー
ンおよびこれにマツチした、Y軸方向に突出し、X方向
に周期を有する表面波線路を励振する加熱効率の良い高
周波加熱装置を提供することを目的とするものである。
Purpose of the invention In order to solve the above-mentioned conventional problems, the present invention provides an electromagnetic horn and a high-frequency heating device with good heating efficiency that excites a surface wave line that projects in the Y-axis direction and has a period in the X-direction, which matches the horn. The purpose is to provide the following.

考案の構成 上記目的を達成するために本考案は、導電部材によ−り
囲まれた加熱室と、y軸方向に突出した導電部材がこれ
と直交する2軸方向に周期的に配列された表面波線路と
、電波発振器とより成り、前記表面波線路を前記加熱室
底部に配設すると共に、前記電波発振器からの電波エネ
ルギーの少くとも一部を前記表面波線路に結合するため
のy軸方向にしだいは広がった電磁ホーンを有するとと
もに前記表面波線路の一端を前記電磁ホーン内に配設し
、前記表面波線路のY軸方向の突出高さを前記電磁ホー
ンの広がりに合せて高くしたものである。
Structure of the Invention In order to achieve the above object, the present invention includes a heating chamber surrounded by conductive members, and conductive members protruding in the y-axis direction that are arranged periodically in two axes perpendicular to the heating chamber. a y-axis comprising a surface wave line and a radio wave oscillator, the surface wave line being disposed at the bottom of the heating chamber, and a y-axis for coupling at least a part of the radio wave energy from the radio wave oscillator to the surface wave line; The surface wave line has an electromagnetic horn that gradually expands in the direction, and one end of the surface wave line is disposed within the electromagnetic horn, and the protrusion height of the surface wave line in the Y-axis direction is increased in accordance with the spread of the electromagnetic horn. It is something.

実施例の説明 本考案は簡単な構造で上記従来の欠点を除去するもので
、以下本考案の一実施例を第3図、第4図を参照して説
明する。
DESCRIPTION OF THE EMBODIMENTS The present invention has a simple structure and eliminates the above-mentioned drawbacks of the prior art.One embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

なお上記従来の構成と同一機能部品は同一番号を使用し
、説明を省略する。
Note that the same numbers are used for the same functional parts as in the above-mentioned conventional configuration, and the description thereof will be omitted.

すなわち本・考案の特徴は、電波発振器3から放射され
た電波エネルギーを、電波が進行するに従いその開口面
が大きくなる電磁ホーン9を介して表面波線路8に伝搬
することである。
That is, the feature of this invention is that the radio wave energy radiated from the radio wave oscillator 3 is propagated to the surface wave line 8 via the electromagnetic horn 9 whose aperture becomes larger as the radio wave advances.

このように、導波管4と加熱室1の結合部分に、電波が
進行するに従い開口面が広がる構造を設けることによっ
て、表面波線路8に沿う電波は徐々に伝搬条件の変化を
受け、加熱室1に導かれる。
In this way, by providing a structure in which the opening surface widens as the radio waves progress at the joint between the waveguide 4 and the heating chamber 1, the radio waves along the surface wave line 8 are gradually subjected to changes in the propagation conditions, and the heating You will be led to room 1.

それ故反射される電波エネルギーが少なく、表面波線路
8により伝搬される電波エネルギーは大きくなる。
Therefore, less radio wave energy is reflected, and more radio wave energy is propagated by the surface wave line 8.

その効果、加熱室1の寸法で決まる共振モードおよび食
品負荷の影響も小さくなって、表面波による食品の調理
およびコゲ目つけも容易となる。
As a result, the resonance mode determined by the dimensions of the heating chamber 1 and the influence of the food load are reduced, making it easier to cook food and reduce burnt spots using surface waves.

また、第3図からもわかるように、電波が進行するに従
い開口面が広がる電磁ホーン構造と、徐々に表面波が生
じるように、表面波線路8の端にテーパーをもたせる等
の手段によって、徐々に表面波線路を形成する構造とを
組合せて、導波管4と加熱室1との結合部の整合をさら
に良くする方法も、この考案に含まれる。
In addition, as can be seen from Fig. 3, the electromagnetic horn structure expands as the radio wave progresses, and the end of the surface wave line 8 is tapered so that surface waves are gradually generated. This invention also includes a method for further improving the matching of the coupling portion between the waveguide 4 and the heating chamber 1 by combining the above structure with a structure for forming a surface wave line.

考案の効果 本考案の高周波加熱装置は、電波が進行するに従い、そ
の開口面が大きくなる電磁ホーンを介して、表面波線路
を励振するので、電波と表面波線路との整合が良くなり
、共振モードおよび食品負荷の影響は少く、表面波によ
る食品の調理およびコゲ目っけが容易で、効率的になる
効果を奏する。
Effects of the Invention The high-frequency heating device of the present invention excites the surface wave line through an electromagnetic horn whose aperture becomes larger as the radio wave progresses, which improves the matching between the radio wave and the surface wave line, resulting in resonance. The influence of the mode and food load is small, and the cooking of food and the burning of the surface waves by surface waves are easy and efficient.

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

第1図は従来の表面波を用いた高周波加熱装置の断面図
、第2図a、l)、cは表面波線路の横断面図、縦断面
図、およびその電界分布図、第3図(ま本考案の高周波
加熱装置の断面図、第4図は同要部の斜視図である。 1・・・・・・加熱室、3・・・・・・電波発振器、8
・・・・・・表面波線路、9・・・・・・電磁ホーン。
Figure 1 is a cross-sectional view of a conventional high-frequency heating device using surface waves, Figures 2 a, l) and c are cross-sectional views, longitudinal cross-sectional views, and electric field distribution diagrams of surface wave lines, and Figure 3 ( FIG. 4 is a cross-sectional view of the high-frequency heating device of the present invention, and a perspective view of the main parts thereof. 1. Heating chamber, 3. Radio wave oscillator, 8.
...Surface wave line, 9...Electromagnetic horn.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 導電部材により囲まれた加熱室と、y軸方向に突出した
導電部材がこれと直交するZ軸方向に周期的に配列され
た表面波線路と、電波発振器とより成り、前記表面波線
路を前記加熱室底部に配設すると共に、前記電波発振器
からの電波エネルギーの少くとも一部を前記表面波線路
に結合するためのy軸方向にしだいに広がった電磁ホー
ンを有するとともに、前記表面波線路の一端を前記電磁
ホーン内に配設し、前記表面波線路のy軸方向の突出高
さを前記電磁ホーンの広がりに合せて高くした高周波加
熱装置。
It consists of a heating chamber surrounded by a conductive member, a surface wave line in which the conductive member protruding in the y-axis direction is periodically arranged in the Z-axis direction perpendicular to this, and a radio wave oscillator. an electromagnetic horn disposed at the bottom of the heating chamber and gradually expanding in the y-axis direction for coupling at least a part of the radio wave energy from the radio wave oscillator to the surface wave line; A high-frequency heating device in which one end is disposed within the electromagnetic horn, and the protrusion height of the surface wave line in the y-axis direction is increased in accordance with the spread of the electromagnetic horn.
JP1980086443U 1980-06-19 1980-06-19 High frequency heating device Expired JPS5824398Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1980086443U JPS5824398Y2 (en) 1980-06-19 1980-06-19 High frequency heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980086443U JPS5824398Y2 (en) 1980-06-19 1980-06-19 High frequency heating device

Publications (2)

Publication Number Publication Date
JPS5698U JPS5698U (en) 1981-01-06
JPS5824398Y2 true JPS5824398Y2 (en) 1983-05-25

Family

ID=29319667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1980086443U Expired JPS5824398Y2 (en) 1980-06-19 1980-06-19 High frequency heating device

Country Status (1)

Country Link
JP (1) JPS5824398Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2017163964A1 (en) * 2016-03-23 2019-01-31 パナソニックIpマネジメント株式会社 Microwave processing equipment
WO2018003588A1 (en) 2016-06-30 2018-01-04 パナソニックIpマネジメント株式会社 High-frequency heating device
JP2024127386A (en) * 2023-03-09 2024-09-20 パナソニックIpマネジメント株式会社 High-frequency heating device and high-frequency heating method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916944A (en) * 1972-06-08 1974-02-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916944A (en) * 1972-06-08 1974-02-14

Also Published As

Publication number Publication date
JPS5698U (en) 1981-01-06

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