JPS61208786A - High frequency heater - Google Patents
High frequency heaterInfo
- Publication number
- JPS61208786A JPS61208786A JP4849685A JP4849685A JPS61208786A JP S61208786 A JPS61208786 A JP S61208786A JP 4849685 A JP4849685 A JP 4849685A JP 4849685 A JP4849685 A JP 4849685A JP S61208786 A JPS61208786 A JP S61208786A
- Authority
- JP
- Japan
- Prior art keywords
- door
- flange
- leakage
- maze
- radio
- 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.)
- Pending
Links
Landscapes
- Constitution Of High-Frequency Heating (AREA)
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】 産業上の利用分野 本発明は高周波加熱装置の漏洩電波防止構造に関する。[Detailed description of the invention] Industrial applications The present invention relates to a leakage radio wave prevention structure for a high frequency heating device.
従来の技術 加熱室の開口部周辺に設けられたフランジか。Conventional technology Is it a flange installed around the opening of the heating chamber?
もしくはこれと対向したドアの周辺の少なくとも一方に
複数個の電波減衰溝を連続して設けて、漏洩電波を防止
する几めの手段が特公昭51−17732号公報に提案
されている。゛
発明が解決しようとする問題点
複数個の電波減衰溝を加熱室の開口部近傍のフランジも
しくはこれと対向するドアの周縁に設けたものは、基本
波近傍の漏洩電波の防止が対象であり、しかも上記電波
減衰溝を構成する部分が大型化してフランジ部の構造や
ドア部の構造が大型化し、実用的でない構成となるばか
りか、上記フランジ部、ドア部の大型化にともない、高
周波加熱装置本体も大型化し設置場所を大きくと9重量
も増すという問題点があった。Alternatively, Japanese Patent Publication No. 51-17732 proposes a method for preventing leakage of radio waves by continuously providing a plurality of radio wave attenuation grooves on at least one side of the periphery of the door facing the door.゛Problems to be Solved by the Invention The object of the invention in which a plurality of radio wave attenuation grooves are provided on the flange near the opening of the heating chamber or on the periphery of the door facing the opening is to prevent leakage of radio waves near the fundamental wave. Moreover, the parts that make up the radio wave attenuation groove become larger, and the structure of the flange part and the door part become larger, resulting in an impractical structure. There was a problem in that the main body of the device also increased in size, and if the installation location was expanded, the weight would also increase.
問題点′を解決するための手段
フランジ周辺部とこれと対向するドアの周辺部にそれぞ
れ第5高調波漏洩防止用と基本波漏洩防止用電波迷路を
単独に設けたものである。Means for Solving Problem '' A radio wave labyrinth for preventing leakage of the fifth harmonic and for preventing leakage of the fundamental wave is separately provided in the periphery of the flange and in the periphery of the door opposite thereto, respectively.
作用
フランジ周辺部には深さ約V20の空胴をもつ第5高調
波漏洩防止用電波迷路を、ドア周辺部には深さ約λ/4
の空胴をもつ基本波漏洩防止用電波迷路を各設けること
により基本波はもとより最近の衛星放送用に使用されて
いる周波数帯域への電波障害が防止される。さらに、各
々の電波迷路はフランジ部とドア部にそれぞれ単独に設
けられているので、フランジ部、ドア部が小型化でき、
高周波加熱aft自体もコンパクトに設計できる。A radio wave labyrinth for preventing 5th harmonic leakage with a cavity with a depth of approximately V20 is installed around the working flange, and a depth of approximately λ/4 is installed around the door.
By providing each radio wave labyrinth having a cavity for preventing fundamental wave leakage, radio wave interference to not only the fundamental wave but also the frequency band used for recent satellite broadcasting is prevented. Furthermore, since each radio maze is provided independently on the flange and door, the flange and door can be made smaller.
The high-frequency heating aft itself can also be designed compactly.
実施例
本発明の一実施例による高周波加熱装置の構成および作
用を図面とともに説明する。Embodiment The structure and operation of a high-frequency heating device according to an embodiment of the present invention will be explained with reference to the drawings.
1は加熱室、2は加熱室1の前面開口部に開閉自在に取
り付けられたドア、3は高周波加熱装置の本体カバー、
4は加熱室1の天井部に設けられた高周波発振器5よ9
発した高周波エネルギーを攪はんするためのスターテで
ある。6は開口部周辺のフランジ7に全周に沿って設け
られた第5高調波漏洩防止用電波迷路で、その深さはC
1キλ。/20(λo=122朋)である。8はドア2
周辺に全周に沿って設けられた基本波漏洩防止用電波迷
路で、フランジ7部に接触するドア後板9とドア2周辺
のドア前板10で構成されその深さC,pλ。/4であ
る。1 is a heating chamber, 2 is a door attached to the front opening of the heating chamber 1 so that it can be opened and closed freely, 3 is a main body cover of the high-frequency heating device,
4 are high frequency oscillators 5 to 9 installed on the ceiling of the heating chamber 1;
This is a starter for stirring the emitted high frequency energy. 6 is a radio wave maze for preventing fifth harmonic leakage, which is provided along the entire circumference of the flange 7 around the opening, and its depth is C.
1ki λ. /20 (λo=122 ho). 8 is door 2
A radio wave maze for preventing fundamental wave leakage is provided around the entire circumference, and is composed of a door rear plate 9 that contacts the flange 7 and a door front plate 10 around the door 2, and has a depth C and pλ. /4.
次に上記実施例の作用効果について説明する。Next, the effects of the above embodiment will be explained.
加熱室1からドア後板9.フランジ7間金漏洩した高周
波エネルギーは、7ランジ7に構成された深さC1中λ
。/20の空胴から成る。第5高調波漏洩防止用電波迷
路6の入口6aでは、第5高調波に対してはインピーダ
ンスが無限大となるため、漏洩した第5高調波は阻止さ
れる。さらに第5高調波漏洩防止用電波迷路6を通過し
友基本波は、上記と同様に基本波防止用電波迷路8の空
胴の深さ自キλ。/4に選んでいるので、入口8aでは
インピーダンスが無限大となり、外部への漏洩が阻止さ
れる。フランジ7部とドア2周辺部にそれぞれ第5高調
波漏洩防止用電波迷路6.基本波漏洩防止用電波迷路8
を設けているので、基本波はもとより放送衛星用周波数
帯への電波妨害が防止されるばかりか、小型の第5高調
波漏洩防止用電波迷路6をフランジ7部に、大型の基本
波漏洩防止用電波迷路8をドア2側に設けているので、
従来のようにフランジ7部、ドア2部が大型化すること
がない。From the heating chamber 1 to the door rear plate 9. The high frequency energy leaked between the flange 7 is λ in the depth C1 configured in the flange 7.
. /20 cavities. At the entrance 6a of the radio maze 6 for preventing leakage of the fifth harmonic, the impedance becomes infinite for the fifth harmonic, so the leaked fifth harmonic is blocked. Furthermore, the fundamental wave that passes through the radio wave maze 6 for preventing fifth harmonic leakage has the same depth λ of the cavity of the radio wave maze 8 for preventing fundamental wave leakage as described above. /4, the impedance at the entrance 8a becomes infinite and leakage to the outside is prevented. 5th harmonic leakage prevention radio wave maze on the flange 7 and the door 2 periphery 6. Radio maze 8 for preventing fundamental wave leakage
This not only prevents radio wave interference to the fundamental wave but also to the frequency band for broadcasting satellites, a small radio maze 6 for preventing fifth harmonic leakage is installed on the flange 7, and a large fundamental wave leakage prevention device is installed. Since the radio wave maze 8 is installed on the door 2 side,
The 7 flange parts and the 2 door parts do not become larger as in the past.
発明の効果
以上のように本発明によると、基本波漏洩防止用電波迷
路をドア周辺に、第5高調波漏洩防止用電波迷路をフラ
ンジ周辺に形成することにより。Effects of the Invention As described above, according to the present invention, a radio wave maze for preventing fundamental wave leakage is formed around the door, and a radio wave maze for preventing fifth harmonic leakage is formed around the flange.
基本波はもとより、放送衛星用周波数帯域の第5高調波
に対しても漏洩防止機能がおり、さらに。It has a leakage prevention function not only for the fundamental wave but also for the 5th harmonic of the frequency band for broadcasting satellites.
各々の電波迷路を単独にフランジ部とドア部に設置する
ことにより高周波加熱装置の大型化が防止され、コンパ
クトで扱い易い高周波加熱装置を提供することができる
。By individually installing each radio wave maze in the flange portion and the door portion, it is possible to prevent the high-frequency heating device from increasing in size, and to provide a compact and easy-to-handle high-frequency heating device.
第1図は本発明の一実施例による高周波加熱装置の要部
断面図、第2図は第1図の電波迷路部の拡大断面図であ
る。
1・・・加熱室。
2・・・ドア。
6.8・・・電波迷路。
7・・・7ランジ。FIG. 1 is a sectional view of a main part of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the radio wave labyrinth section of FIG. 1. 1... Heating chamber. 2...door. 6.8... Radio maze. 7...7 lunges.
Claims (1)
と、これと対向したドア(2)の周辺にそれぞれ電波迷
路(6)、(8)を形成し、上記フランジ(7)に設け
られた電波迷路(6)の深さ(C_1)を約λ_■/2
0(λ_■=122mm)、ドア(2)周縁に設けられ
た電波迷路(8)の深さ(C_2)を約λ_■/4とし
たことを特徴とする高周波加熱装置。Flange (7) provided around the opening of the heating chamber (1)
Radio mazes (6) and (8) are respectively formed around the door (2) facing this, and the depth (C_1) of the radio maze (6) provided on the flange (7) is approximately λ_ ■/2
0 (λ_■=122 mm), and the depth (C_2) of the radio maze (8) provided around the periphery of the door (2) is approximately λ_■/4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4849685A JPS61208786A (en) | 1985-03-12 | 1985-03-12 | High frequency heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4849685A JPS61208786A (en) | 1985-03-12 | 1985-03-12 | High frequency heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61208786A true JPS61208786A (en) | 1986-09-17 |
Family
ID=12804987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4849685A Pending JPS61208786A (en) | 1985-03-12 | 1985-03-12 | High frequency heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61208786A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0346996U (en) * | 1989-09-12 | 1991-04-30 |
-
1985
- 1985-03-12 JP JP4849685A patent/JPS61208786A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0346996U (en) * | 1989-09-12 | 1991-04-30 |
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