JPS6094A - High frequency heater - Google Patents

High frequency heater

Info

Publication number
JPS6094A
JPS6094A JP58108709A JP10870983A JPS6094A JP S6094 A JPS6094 A JP S6094A JP 58108709 A JP58108709 A JP 58108709A JP 10870983 A JP10870983 A JP 10870983A JP S6094 A JPS6094 A JP S6094A
Authority
JP
Japan
Prior art keywords
cavity
door
dielectric
opening
high 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
Application number
JP58108709A
Other languages
Japanese (ja)
Inventor
毅 高見
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP58108709A priority Critical patent/JPS6094A/en
Publication of JPS6094A publication Critical patent/JPS6094A/en
Pending legal-status Critical Current

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  • 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の電波漏洩防止構造に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a radio wave leakage prevention structure for a door of a high frequency heating device.

従来例の構成とその問題点 第1図に示す従来の高周波加熱装置のドア本体4は誘電
体17とドアカバー19が一体形成されているため下記
のような問題があった。
Conventional Structure and Problems The door body 4 of the conventional high-frequency heating device shown in FIG. 1 has the following problems because the dielectric 17 and the door cover 19 are integrally formed.

(1) ドアカバー19の成形加工は全体が枠状の形状
と、外観を構成する部品のため射出成形加工となシ、キ
ャビティ内に挿入される部分のドアカバー19の厚み1
寸法は現実的には3だIN程度が限度となり、3m77
以上の場合は成形」二のヒケ、ウェルドラインなど外観
が見苦しくなって商品化が困難であった。また厚み1寸
法が3騎程度であれば波長に対する肉厚寸法が小さいた
め誘電体としての効果が少なく電波漏洩防止の問題の解
決、あるいは大きなキャビティが必要でドア本体4の小
型が実現出来なかった。
(1) The molding process of the door cover 19 is an injection molding process because the entire shape is frame-like and the parts that make up the exterior.The thickness of the door cover 19 at the part inserted into the cavity is 1.
The realistic limit for the dimensions is about 3 inches, which is 3m77.
In these cases, the appearance becomes unsightly, such as molding sink marks and weld lines, making it difficult to commercialize the product. In addition, if the thickness per dimension is about 3 mm, the wall thickness with respect to the wavelength is small, so it is not effective as a dielectric, and it is not possible to solve the problem of preventing radio wave leakage or to make the door body 4 smaller because a large cavity is required. .

(2) キャビティの開口部から見た奥行に対して垂直
方向の肉厚をキャビティの奥行間で変化させることが出
来ないため電波漏洩防止の問題の解決、あるいは大きな
キャビティが必要となり、ドア本体4の小型化が実現出
来なかった。
(2) Since the wall thickness in the direction perpendicular to the depth seen from the opening of the cavity cannot be changed between the depths of the cavity, it is necessary to solve the problem of preventing radio wave leakage or to create a large cavity. could not be made smaller.

発明の目的 本発明は上記従来の構造を改善することによって電波漏
洩防止性能の向」二、製品の小型化、単純化を図ること
を目的としている。
OBJECTS OF THE INVENTION The present invention aims to improve the radio wave leakage prevention performance and to make the product more compact and simple by improving the conventional structure described above.

発明の構成 上記目的を達成するため、本発明の高周波加熱装置は、
被加熱物を収納する加熱室と、前記加熱室の開口部に開
閉自在に装着されたドアとを備え、前記ドアは前記開口
部周囲面と高周波的に接触し外周部にキャビティを有す
るドアフレームと、前記キャビティ内に挿入された誘電
体と、前記キャビティの開口部をカバーし誘電体物質か
らなるドアカバーとを有し、前記誘電体は前記ドアカバ
ーと分離し、前記キャビティの開口部から見て前記キャ
ビティの実行に対して垂直方向の肉厚を前記キャビティ
の奥行間で増減する構成である。
Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention has the following features:
A door frame comprising a heating chamber for storing an object to be heated, and a door attached to an opening of the heating chamber so as to be openable and closable, the door being in high-frequency contact with the surrounding surface of the opening and having a cavity in its outer periphery. a dielectric inserted into the cavity; and a door cover made of a dielectric material and covering the opening of the cavity, the dielectric being separated from the door cover and extending from the opening of the cavity. When viewed from above, the wall thickness in a direction perpendicular to the execution of the cavity is increased or decreased between the depths of the cavity.

上記構成により電波漏洩の性能向上とドアのうす型化か
り能となった。
The above configuration improves radio wave leakage performance and allows the door to be made thinner.

実施例の説明 以下、本発明の一実施例について、図面に基つき説明す
る。
DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

第2図〜第4図において、本体1の内部には一面が開口
になった加熱室2が位置し、この加熱室2の開口部には
ハンドル3の操作によって開閉自在に装着されるドア本
体4が位置している。加熱室2には被加熱物が置かれマ
グネトロンから照射された高周波によって誘電加熱され
る構成になっている。
2 to 4, a heating chamber 2 with an opening on one side is located inside the main body 1, and a door body is attached to the opening of the heating chamber 2 so that it can be opened and closed by operating a handle 3. 4 is located. An object to be heated is placed in the heating chamber 2 and dielectrically heated by high frequency waves irradiated from a magnetron.

次に本構造の要部であるドア本体4について説明する。Next, the door body 4, which is the main part of this structure, will be explained.

金属体から成シ中央部に被加熱物透視用のパンチングを
有しドア本体4の骨格を形成するドアフレーム6は、加
熱室2の前板6と高周波的に接触し、第1段階の電波漏
洩防止を行なっている。まだこのドアフレーム6は金属
体から成りドア本体4に対して垂直にスリットを設けた
スリット板7とともにキャビティ8を構成し第2段階の
電波漏洩防止を行なっている。
The door frame 6, which is made of a metal body and has a punching in the center for seeing through the object to be heated and forms the framework of the door body 4, is in high-frequency contact with the front plate 6 of the heating chamber 2, and receives the first stage of radio waves. We are working to prevent leaks. This door frame 6 is made of a metal body, and together with a slit plate 7 having slits perpendicular to the door body 4, forms a cavity 8 to perform the second stage of radio wave leakage prevention.

更にスリット板7には約10m1M間隔で周期的に約1
/4人長さを有する棚部を設は第3段階の電波漏洩防止
を行なっている。
Furthermore, on the slit plate 7, approximately 1
The third stage of radio wave leakage prevention is to install a shelf with a length of 4 people.

ドア本体4の開閉様構は、ハント′ル3に取付られたボ
タン9と、力を伝達する連結レバー10と、バネ11に
よって付勢され、ピン12を支点にして動作するドアフ
ック13と、前板6にビス14にて固定されたドアフッ
クB15とからなり、ボタン3を手で操作することによ
シ連結レバー1゜がバネ11の力に打勝って矢印16方
向に動作しドアフックB15からドアフック13を解除
する構造になっている。」二記のようにドア本体4のハ
ンドル側は1−アフノク13、バネ9、連結レバー10
等の金属体の部品が電波漏洩防止素子であるスリット板
7の近傍に位置するためキャビティ8付近の高周波電界
を乱し、キャビティ8のチョーク効果、スリンl−板7
のスリット効果を低下させるだめキャビティ8の中に誘
電体17を設けている。この誘電体17は必要に応じて
ドア本体4の全周に設けても効果的である。この誘電体
17はキャビティ8へ流入する高周波電界の強さ、指向
性によって誘電体17自体の内厚をキャビティ8の開口
部から見た奥行方向において厚さtlから厚さくt2−
4−t3)、厚さくt2+t3)から厚さt4、厚さt
4から厚さくt5+t6) 、厚さくt5+t6’)か
ら厚さt7と変化させ、キャビティ8の形状とともに高
周波的に整合をとりチョーク効果によってA部18から
の電波漏洩の防止を行なうとともにキャビティ8の奥行
寸法を小さくしドア本体4の小型化を実現している。誘
電体17自体の肉厚の変化による電波漏洩防止方法は誘
電体内部を透過する高周波の波長と空気中の高周波の波
長の長さの違いを利用したものである。
The opening/closing structure of the door body 4 consists of a button 9 attached to the handle 3, a connecting lever 10 that transmits force, a door hook 13 that is biased by a spring 11 and operates with a pin 12 as a fulcrum, and a front It consists of a door hook B15 fixed to a plate 6 with screws 14, and by manually operating the button 3, the connecting lever 1° overcomes the force of the spring 11 and moves in the direction of the arrow 16, thereby moving the door hook B15 to the door hook. It has a structure that cancels 13. As shown in 2, the handle side of the door body 4 is 1-Funoku 13, spring 9, and connecting lever 10.
metal parts such as are located near the slit plate 7, which is a radio wave leakage prevention element, and disturb the high frequency electric field near the cavity 8, causing the choke effect of the cavity 8 and the slit plate 7.
A dielectric 17 is provided in the cavity 8 to reduce the slit effect. It is also effective to provide this dielectric 17 all around the door body 4, if necessary. Depending on the strength and directivity of the high-frequency electric field flowing into the cavity 8, the dielectric 17 changes its inner thickness from the thickness tl to the thickness t2- in the depth direction when viewed from the opening of the cavity 8.
4-t3), thickness t2+t3) to thickness t4, thickness t
The thickness is changed from 4 to t5 + t6) and from t5 + t6') to t7, and the thickness is changed from t5 + t6') to t7 to match the high frequency with the shape of cavity 8, prevent radio wave leakage from part A 18 by a choke effect, and also change the depth of cavity 8. By reducing the dimensions, the door body 4 can be made smaller. The method of preventing radio wave leakage by changing the thickness of the dielectric 17 itself utilizes the difference in length between the wavelength of high frequency waves transmitted inside the dielectric body and the wavelength of high frequency waves in the air.

は誘電率の高いナイロンの場合比誘電率が4であるため
波長は真空中のIになるものである(λ:誘電体内の波
長、λ0:真空中の高周波の波長εr:誘電体の比誘電
率)。キャビティ8の開口部は比誘電率、誘電損失が低
く耐熱性、外観性。
In the case of nylon, which has a high dielectric constant, the relative permittivity is 4, so the wavelength is I in vacuum (λ: wavelength inside the dielectric, λ0: wavelength of high frequency in vacuum εr: relative permittivity of the dielectric) rate). The opening of cavity 8 has low dielectric constant and dielectric loss, and has good heat resistance and appearance.

強度的にも優れた誘電体から成っているドアカバー19
を設は食品かす、水等のキャビティ8中への流入を防い
でいる。
Door cover 19 made of dielectric material with excellent strength
This prevents food particles, water, etc. from flowing into the cavity 8.

このドアカバー19は比誘電率、誘電損失が低く肉厚も
射出成形加工のため約2mmと薄いため電波の波長を、
大きく変化させることは困難で電波漏洩防止には大きな
貢献は出来ないものである。まだ上記のように誘電体1
7はドアカバー19と分離しておるため、押し出加工法
などで肉厚、形状の自白な選択とともにキャビティ8近
傍の高周波電界に応じた比誘電率の選択も自由にできる
構成になっている。第5図(ia) 、 (b)に誘導
体17の他の実施例を示している。
This door cover 19 has a low relative dielectric constant and dielectric loss, and is thin at about 2 mm due to injection molding, so it can easily handle the wavelength of radio waves.
It is difficult to make major changes and cannot make a significant contribution to preventing radio wave leakage. Still dielectric 1 as above
Since 7 is separated from the door cover 19, the configuration allows freedom in selecting the wall thickness and shape using extrusion processing, etc., as well as the relative permittivity depending on the high frequency electric field near the cavity 8. . Other examples of the derivative 17 are shown in FIGS. 5(ia) and 5(b).

20はドアスクリーン21を保持しドアフレーム6の外
周に位置する外観構成部品、ドアサツシ−であり、また
22は装置の操作部品が取付られているコンl−ロール
パネルでアル。
20 is a door sash, which is an exterior component that holds the door screen 21 and is located on the outer periphery of the door frame 6; and 22 is a control panel to which operating parts of the device are attached.

発明の効果 (1) 1述の如くキャビティ内に挿入された誘電体を
キャビティの奥行間で肉厚を増減させることと自由な材
質の選択を可能にしたことにょシミ波漏洩の性能同士と
、装置、特にドアの小型化単純化が可能となった。
Effects of the invention (1) As mentioned in 1, the thickness of the dielectric inserted into the cavity can be increased or decreased between the depths of the cavity, and the material can be freely selected, and the performance of stain wave leakage is improved. It has become possible to downsize and simplify the equipment, especially the door.

(2)誘電体とドアカバーを分離することによって誘電
体はドアカバーの形状に制約を受けないため誘電体はド
ア本体の必要な部分に自由な長さで挿入することが出来
効率の良い省資椋設計が可能となった。
(2) By separating the dielectric and the door cover, the dielectric is not restricted by the shape of the door cover, so the dielectric can be inserted into the required part of the door body at any length, resulting in efficient savings. Capital design became possible.

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

第1図は従来の高周波加熱装置の要部1わ1而図、第2
図は本発明の一実施例である高周波加熱装置の外観斜視
図、第3図は第2図のx −x’線におけ例を示す断面
図である。 5・・・・・・ドアフレーム、6・・・・・・前板、了
・・・・スリット板、8・・・・・キャビティ、10・
・・・・I! 結レバー、11・・・・・・バネ、17
・・・・誘電体、19・・・ ドアカバー。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名”2
0 。 第 4 @
Figure 1 shows the main parts of a conventional high-frequency heating device.
The figure is a perspective view of the appearance of a high-frequency heating device according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along the line x-x' in FIG. 2. 5... Door frame, 6... Front plate, End... Slit plate, 8... Cavity, 10...
...I! Connection lever, 11... Spring, 17
...Dielectric material, 19... Door cover. Name of agent: Patent attorney Toshio Nakao and 1 other person”2
0. 4th @

Claims (2)

【特許請求の範囲】[Claims] (1)被加熱物を収納する加熱室と、前記加熱室の開口
部に開閉自在に装着されたドアとを備え、前記ドアは前
記開口部周囲−と高周波的に接触し外周部にキャビティ
を有するドアフレームと、前記キャビティ内に挿入され
た誘電体と、前記キャビティの開口部をカバーし、誘電
体物質からなるドアカバーとを有し、前記誘電体は前記
ドアカバーと分離し前記キャビティの開口部から見て前
記キャビティの奥行に対して垂直方向の肉厚を前記キャ
ビティの奥行間で増減する構成とした高周波加熱装置。
(1) A heating chamber for storing an object to be heated, and a door attached to an opening of the heating chamber so as to be openable and closable, the door making high-frequency contact with the periphery of the opening and forming a cavity in the outer periphery. a dielectric material inserted into the cavity; and a door cover made of a dielectric material and covering an opening of the cavity, the dielectric material being separated from the door cover and forming a part of the cavity. A high-frequency heating device configured to increase or decrease the wall thickness in a direction perpendicular to the depth of the cavity as viewed from the opening.
(2)誘電体をドアフレームのキャビティ内に非周期的
に構成した特許請求の範囲第1項記載の高周波加熱装置
(2) The high frequency heating device according to claim 1, wherein the dielectric is arranged aperiodically within the cavity of the door frame.
JP58108709A 1983-06-16 1983-06-16 High frequency heater Pending JPS6094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58108709A JPS6094A (en) 1983-06-16 1983-06-16 High frequency heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58108709A JPS6094A (en) 1983-06-16 1983-06-16 High frequency heater

Publications (1)

Publication Number Publication Date
JPS6094A true JPS6094A (en) 1985-01-05

Family

ID=14491608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58108709A Pending JPS6094A (en) 1983-06-16 1983-06-16 High frequency heater

Country Status (1)

Country Link
JP (1) JPS6094A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222248U (en) * 1975-08-05 1977-02-17
JPS5432852U (en) * 1977-08-09 1979-03-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222248U (en) * 1975-08-05 1977-02-17
JPS5432852U (en) * 1977-08-09 1979-03-03

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