JPS61151991A - Door seal apparatus for high frequency heater - Google Patents
Door seal apparatus for high frequency heaterInfo
- Publication number
- JPS61151991A JPS61151991A JP27714484A JP27714484A JPS61151991A JP S61151991 A JPS61151991 A JP S61151991A JP 27714484 A JP27714484 A JP 27714484A JP 27714484 A JP27714484 A JP 27714484A JP S61151991 A JPS61151991 A JP S61151991A
- Authority
- JP
- Japan
- Prior art keywords
- door
- heating chamber
- coil
- chamber opening
- frequency
- 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ドア周辺部からの電波漏洩を
防止するためのドアシール装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a door seal device for preventing leakage of radio waves from around the door of a high frequency heating device.
従来の技術
一般に高周波加熱装置たとえば電子レンジは加熱室内に
高周波電磁波を放射し、その加熱作用によって食品等の
被加熱物を加熱するものであるから、被加熱物の出し入
れ用に設けたドアの周辺部でのわずかな隙間から電波が
漏洩し、各種の障害を生ずる恐れがある。Conventional technology In general, high-frequency heating devices such as microwave ovens emit high-frequency electromagnetic waves into a heating chamber and use the heating effect to heat objects to be heated such as food. There is a risk that radio waves may leak through small gaps in the area, causing various problems.
? ゛
・ この電波の漏洩を防止するため、従来はドア部又は
これに対向する加熱室壁面部に使用電波の概略1/4波
長の深さを有する金属でかこった溝(これをチョーク構
造と称する)を設置し、上記した電波の漏洩を防止して
いた。?゛・ In order to prevent this radio wave leakage, conventionally, a metal groove (this is called a choke structure) with a depth of approximately 1/4 wavelength of the radio waves used is installed in the door or the heating chamber wall facing the door. ) was installed to prevent the leakage of radio waves mentioned above.
第4図、第5図は上記千目−り構造を有した電子レンジ
の断面図及び概略図であり、電子レンジの加熱室17に
充満している電波の一部が加熱室17の周囲1とドア2
との隙間を伝って外部に漏洩しようとする。4 and 5 are a cross-sectional view and a schematic diagram of a microwave oven having the above-mentioned thousand-point structure, in which a part of the radio waves filling the heating chamber 17 of the microwave oven is and door 2
attempts to leak to the outside through the gap between the
そのドア周辺部を第6図に拡大して示した。ドア2の周
辺にはドア前板18とドア後板19で構成したチョーク
構造20を設置しており、このチョーク構造20の開口
部21からの深さを使用電波の波長の概略1/4近くに
設計することで、電波漏洩量を小さくすることができた
。FIG. 6 shows an enlarged view of the area around the door. A choke structure 20 consisting of a door front plate 18 and a door rear plate 19 is installed around the door 2, and the depth from the opening 21 of this choke structure 20 is approximately 1/4 of the wavelength of the radio waves used. By designing this, we were able to reduce the amount of radio wave leakage.
しかしこの千目−り構造20だけでは要求されている性
能には不十分で、サツシ部22に電波吸収性を有するフ
ェライト粉末をゴムに混入したフェライトゴム23を設
置しなくてはならなかった。However, this zigzag structure 20 alone is not sufficient to meet the required performance, and it is necessary to install ferrite rubber 23 in which rubber is mixed with ferrite powder having radio wave absorbing properties in the sash portion 22.
このフェライトゴムは一般に高価であり、かつ電波吸収
性を有しているため過大に電波漏洩があるときは異常発
熱し、時には発煙、発火にいたるときもあシ、安全性に
難があった。This ferrite rubber is generally expensive and has radio wave absorbing properties, so when there is excessive radio wave leakage, it generates abnormal heat, sometimes leading to smoke and fire, which poses safety concerns.
そこで、チローク購造20に代えて電波の通路を2つに
区分して、通路の形状の違いに起因する位相差を発生さ
せて、電波漏洩を抑制する方法が提案されているが、こ
の方法も電波の通路を構成する空間が必要である(特公
昭58−30712号公報)。Therefore, a method has been proposed to suppress radio wave leakage by dividing the radio wave path into two parts and generating a phase difference due to the difference in the shape of the path, instead of the Chiroku purchase 20, but this method Also, a space is required to constitute a radio wave passage (Japanese Patent Publication No. 58-30712).
発明が解決しようとする問題点
つまり1/4波長を利用したナラ−り構造であっても、
1/2波長未満の伝送路を複数個設置した構造であって
も、ドアシール装置として占める空間容積は未だ大きく
、ドアの厚みが数cmにも達している。このことによシ
ドアの重量が増し、変電なるドアの開閉での慣性モーメ
ントによる耐久性を持つドアヒンジが必要となり、それ
に満足できる材料が吟味されて、結局高価なドアになる
と云う問題がある。又、ドアの厚みを薄くするにも限界
があるため、電子レンジの外観、意匠上漸新な商品イメ
ージが提案できないこととなり、同時に商品全体の容積
に占める加熱室内の容積の比を求めた容積率の向とに限
界を示すことになる。The problem that the invention aims to solve, that is, even if it is a narrow structure using 1/4 wavelength,
Even with a structure in which a plurality of transmission lines of less than 1/2 wavelength are installed, the space occupied by the door seal device is still large, and the thickness of the door reaches several centimeters. This increases the weight of the side door, requires a door hinge that is durable due to the moment of inertia that occurs when opening and closing the door due to electrical transformation, and materials that can satisfy this need to be carefully selected, resulting in an expensive door. Additionally, there is a limit to how thin the door can be made to be, making it impossible to propose a progressively new product image in terms of the appearance and design of the microwave oven. This indicates a limit in the direction of the rate.
そしてこれらドアの容積を小さくすることは消費者の需
要を喚起できる因子としてわかっているが、実際には電
波漏洩を防ぐドアシール性能と相反する面があシ、ドア
の軽量化、薄型化は非常に困難であるという問題があっ
た。Reducing the volume of these doors is known to be a factor that can stimulate consumer demand, but in reality, there are aspects that conflict with the door seal performance that prevents radio wave leakage, and it is extremely difficult to make the door lighter and thinner. The problem was that it was difficult to
本発明はこのような従来の問題点を解消するものであり
簡単な構成で、ドアの軽量化、薄型化を実現し確実なド
アシールを実現する優れた高周波加熱装置用ドアシール
装置を提供するものである。The present invention solves these conventional problems and provides an excellent door sealing device for a high-frequency heating device that has a simple structure, makes the door lighter and thinner, and achieves reliable door sealing. be.
問題点を解決するだめの手段
本発明の高周波加熱装置用ドアシール装置は、加熱室口
の周囲とドアの間に挾まれたコイルに、j几
高周波発生装置を駆動する電葛を流すものである。Means to Solve the Problem The door sealing device for a high frequency heating device of the present invention is one in which an electric current for driving the high frequency generator is passed through a coil interposed between the door and the vicinity of the heating chamber opening. .
作 用
本発明の高周波加熱装置用ドアシール装置は、加熱室口
の周囲とドアの間に絶縁物で覆われたコイルを挾み、高
周波発生装置が高周波電磁波を放射している時に、この
コイルに通電がなされコイルの周シに閉ループの磁力線
が生成されることによシ、加熱室口からドア周囲へ加熱
室内の高周波電磁波が漏洩するのを遮断することになシ
、ドアシー〜が達成されることになる。Function: The door seal device for a high-frequency heating device of the present invention has a coil covered with an insulating material sandwiched between the periphery of the heating chamber opening and the door, and when the high-frequency generator is emitting high-frequency electromagnetic waves, the coil is sealed. When the coil is energized, closed-loop lines of magnetic force are generated around the coil, thereby blocking high-frequency electromagnetic waves inside the heating chamber from leaking from the heating chamber entrance to the area around the door, thereby achieving door sealing. It turns out.
また、ドアは略平板形状の強磁性体金属からなり、加熱
室口の周囲の金属とこのドアの間に絶縁物で覆われたコ
イルを固着する構成であシコイルの厚みは、導線と絶縁
物との合計厚みからなっておシ、Sam未満で十分足り
る。In addition, the door is made of ferromagnetic metal with a substantially flat plate shape, and a coil covered with an insulating material is fixed between the door and the metal surrounding the heating chamber opening. It is sufficient that the total thickness is less than Sam.
以上のことによシ軽量化、薄型化されたドアの実現と安
定なドアシールが実現出来ることになる。As a result of the above, it is possible to realize a door that is lighter in weight and thinner, and a stable door seal.
実施例
以下、本発明の一実施例の高周波加熱装置用ドアシール
を図面を参照して説明する。EXAMPLE Hereinafter, a door seal for a high frequency heating device according to an example of the present invention will be described with reference to the drawings.
第1図、第2図に示すように、加熱室口の周囲1と略平
面ドア2との間に挾まれたコイ)V3とがありコイ/I
/3は1回以上の巻回数でコイル導体相互間は絶縁物4
にて絶縁されている。この絶縁物4には加熱室口の周囲
1に係止するだめのツメ(図示せず)とビス締付用穴〇
を備えている。又、コイ)V3の内側と外側に強磁性体
で金属の輪5を固着している。更にドア2には加熱室口
の大きさに対応する形状寸法の範囲に直径964以下の
パンチング穴7が施されており、加熱室口の周囲1には
コイルの絶縁物4のツメの係止用穴8とビス締付用穴9
とドア2の蝶番1oの加工が施されているように構成し
ている。As shown in FIGS. 1 and 2, there is a carp (carp) V3 sandwiched between the periphery 1 of the heating chamber entrance and the substantially flat door 2.
/3 is the number of turns of one or more turns, and the insulation between the coil conductors is 4.
Insulated. This insulator 4 is provided with a retaining tab (not shown) that locks around the periphery 1 of the heating chamber opening and a screw tightening hole. Furthermore, a metal ring 5 is fixed to the inside and outside of the carp (carp) V3 using a ferromagnetic material. Furthermore, the door 2 is provided with a punched hole 7 having a diameter of 964 mm or less in a range of dimensions corresponding to the size of the heating chamber opening, and a hole 7 on the periphery 1 of the heating chamber opening is provided with a hole for locking the claw of the insulator 4 of the coil. hole 8 and screw tightening hole 9
It is configured such that the hinge 1o of the door 2 is processed.
なお第3図に示すように、高周波電磁波発生装置として
の磁電管11とか高圧トランス12へ電気を通じている
時にはコイル3には電流が流れている構成として、更に
ドアの開閉に連動するスイッチとして13.14.15
.16があり、ドアが開いている時はコイルに通電が不
可能になる回路溝底にして本発明を実施している。As shown in FIG. 3, current is flowing through the coil 3 when electricity is flowing to the magnetron tube 11 or high-voltage transformer 12 as a high-frequency electromagnetic wave generator, and the switch 13. 14.15
.. 16, and the present invention is implemented by making the bottom of the circuit groove so that the coil cannot be energized when the door is open.
このようにすれば、加熱室口の周囲1からドア2の周辺
に漏れ出そうとする高周波電磁波が、コイ/I/3に通
電することにより生成される磁力線により遮断されてド
ア2の周囲に届かないため、十分なドアシールができる
。またドア2もチョーク構造を内蔵する必要がなく軽量
化、薄型化のドア2が実現できる。このほか、本実施例
のようにコイtV3が1回以上巻くことにより、強力な
磁力線が生成されることになり高周波電磁波の遮断能力
陶土ができる。絶縁物4にツメとビス締め用穴6を備え
ていることにより、高周波加熱装置を組立てる時の作業
時間の短縮化を図ることができる。In this way, the high-frequency electromagnetic waves that are about to leak from the area around the heating chamber opening 1 to the area around the door 2 are blocked by the lines of magnetic force generated by energizing the coil/I/3, and the waves leak around the door 2. Since it cannot reach the door, a sufficient door seal can be created. Further, the door 2 does not need to have a built-in choke structure, and the door 2 can be made lighter and thinner. In addition, by winding the carp tV3 one or more times as in the present embodiment, strong lines of magnetic force are generated, making it possible to make china clay capable of blocking high-frequency electromagnetic waves. By providing the insulator 4 with the claws and screw holes 6, it is possible to shorten the working time when assembling the high frequency heating device.
コイル3の内側と外側に強磁性体で金属の輪5を固着し
ていることによりコイ/L/3により生成した磁力線が
1、加熱室口の周囲とドア3との間で減衰するのを防ぐ
効果がある。ドア2に設けたパンチングの範囲が加熱室
口の大きさに対応していることにより、加熱室口にドア
2が閉成された状態でも加熱室内の様子が全部観察でき
ることになる。By fixing metal rings 5 made of ferromagnetic material to the inside and outside of the coil 3, the lines of magnetic force generated by the coil/L/3 are prevented from attenuating between the periphery of the heating chamber entrance and the door 3. It has a preventive effect. Since the punching range provided on the door 2 corresponds to the size of the heating chamber opening, the entire inside of the heating chamber can be observed even when the door 2 is closed at the heating chamber opening.
また、加熱室口の周囲1に係止用穴8と締付用穴9とを
設けであることにより組立作業時間の短縮化を図ること
ができるし、蝶番10の加工が施しであることにより、
ドア2を取付ける時間の短縮を図ることができる。Further, by providing a locking hole 8 and a tightening hole 9 around the heating chamber opening 1, the assembly work time can be shortened, and since the hinge 10 is processed, ,
The time required to install the door 2 can be shortened.
発明の効果
以とのように本発明の高周波加熱装置用ドアシール機能
は、加熱室口の周囲とドアとの間に挾まれたコイルに通
電することにより生成される磁力線によシ、ドアシール
機能を働かせたものでありドアの構造が簡単になシドア
部の費用が低下する。Effects of the Invention As described above, the door sealing function for a high-frequency heating device of the present invention is achieved by the magnetic field lines generated by energizing the coil sandwiched between the door and the periphery of the heating chamber opening. The structure of the door is simplified and the cost of the side door part is reduced.
またドア部の重量が軽くなシ、ドア開閉の繰り返し寿命
が延びる。ところで、コイルが加熱室開口の周囲に固着
しているときは、更にドアの軽量、薄型化を実現し加熱
室の容積率の向上を図シ、漸新な商品の外観を提案でき
、消費者の購買意欲を増大させる商品イメージを提案で
きる。In addition, the weight of the door is light, extending the life of repeated door opening and closing. By the way, when the coil is fixed around the opening of the heating chamber, it is possible to make the door lighter and thinner, improve the heating chamber's volume ratio, and propose a new product appearance, which is appealing to consumers. It is possible to propose product images that increase the customer's desire to purchase.
更にコイルの巻数に応じた磁力線が得られドアシール能
力を向上させ、コイル絶縁物に設けたツメ、穴等により
組立時の作業性の向上を図シ、コイルの内側、外側に設
けた金属の輪が磁力線の減衰を防いで、ほかに賂平板形
状のドアに設けたパンチング加工が、加熱室口の大きさ
に対応していることにより加熱室内を全て観察すること
ができ実用上きわめて有利なものである。Furthermore, magnetic lines of force are obtained according to the number of turns of the coil, improving door sealing ability, and claws and holes provided in the coil insulator improve workability during assembly. This prevents the magnetic field lines from attenuating, and the punching process on the flat plate-shaped door corresponds to the size of the heating chamber opening, making it possible to observe the entire inside of the heating chamber, which is extremely advantageous in practical terms. It is.
第1図は本発明の一実施例における高周波加熱装置の断
面斜視図、第2図は同分解斜視図、第3図は同電気回路
図、第4図は従来の高周波加熱装置の一部切欠斜視図、
第5図は同概略構成図、第6図は同要部拡大断面図であ
る。
1・・・・・・加熱室口の周囲、2・・・・・・ドア、
3・・・・・・コイル、4・・・・・・絶縁物。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名1−
一カロ塾室口の周囲
第2図 2−ドア
!
嬉 4 図
ん
第5図Fig. 1 is a cross-sectional perspective view of a high-frequency heating device according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is an electric circuit diagram of the same, and Fig. 4 is a partial cutaway of a conventional high-frequency heating device. Perspective view,
FIG. 5 is a schematic configuration diagram of the same, and FIG. 6 is an enlarged sectional view of the same essential parts. 1...Around the heating chamber entrance, 2...Door,
3... Coil, 4... Insulator. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Figure 2 around the Ichikaro Juku room entrance 2-Door! Happy 4 Unexpected Figure 5
Claims (4)
前記加熱室内に食品を出し入れするための加熱室口と、
前記加熱室口をふさぐドアと、前記加熱室口の周囲又は
前記ドアとの少なくともいずれか一方に固着したコイル
と、前記加熱室内に高周波電磁波を放射する高周波発生
装置とを備え、高周波発生装置を駆動する電流が前記コ
イルに流れ、コイル周辺に磁界を発生させることにより
、加熱室口の周囲とドアとの間に磁力線の閉ループを生
成する構成とした高周波加熱装置用ドアシール装置。(1) A heating chamber in which food is stored and cooked inside the main body;
a heating chamber opening for taking food into and out of the heating chamber;
A high-frequency generator comprising: a door that blocks the heating chamber opening; a coil fixed to at least one of the periphery of the heating chamber opening and the door; and a high-frequency generator that radiates high-frequency electromagnetic waves into the heating chamber. A door seal device for a high-frequency heating device, wherein a driving current flows through the coil and generates a magnetic field around the coil, thereby creating a closed loop of magnetic lines of force between the periphery of the heating chamber opening and the door.
互間は絶縁物で形成しており、その絶縁物には突起物と
、ビス締付用穴とを備え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用ドアシール装置。(2) The coil has one or more windings, and the coil conductors are formed of an insulating material, and the insulating material is provided with protrusions and holes for tightening screws. A door seal device for a high-frequency heating device according to item 1.
えコイル周囲に発生する磁力線がドア金属と加熱室口の
周り金属との間で減衰するのを防ぐ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用ドアシール装置。(3) Claims of a structure in which metal rings made of ferromagnetic material are provided inside and outside the coil to prevent lines of magnetic force generated around the coil from attenuating between the door metal and the metal surrounding the heating chamber opening. A door seal device for a high frequency heating device according to item 1.
4以下のパンチング穴加工が、加熱室口の大きさに対応
する面積に亘って施され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用ドアシール装置。(4) The door is made of ferromagnetic metal and is approximately flat in diameter.
2. The door seal device for a high-frequency heating device according to claim 1, wherein punching holes of 4 or less are formed over an area corresponding to the size of the heating chamber opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27714484A JPS61151991A (en) | 1984-12-24 | 1984-12-24 | Door seal apparatus for high frequency heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27714484A JPS61151991A (en) | 1984-12-24 | 1984-12-24 | Door seal apparatus for high frequency heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61151991A true JPS61151991A (en) | 1986-07-10 |
Family
ID=17579411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27714484A Pending JPS61151991A (en) | 1984-12-24 | 1984-12-24 | Door seal apparatus for high frequency heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61151991A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3550380A1 (en) * | 2018-02-27 | 2019-10-09 | Canon Kabushiki Kaisha | Locking mechanism and image forming apparatus |
-
1984
- 1984-12-24 JP JP27714484A patent/JPS61151991A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3550380A1 (en) * | 2018-02-27 | 2019-10-09 | Canon Kabushiki Kaisha | Locking mechanism and image forming apparatus |
US10656590B2 (en) | 2018-02-27 | 2020-05-19 | Canon Kabushiki Kaisha | Locking mechanism and image forming apparatus |
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