JP2623865B2 - High frequency heating equipment - Google Patents
High frequency heating equipmentInfo
- Publication number
- JP2623865B2 JP2623865B2 JP27744589A JP27744589A JP2623865B2 JP 2623865 B2 JP2623865 B2 JP 2623865B2 JP 27744589 A JP27744589 A JP 27744589A JP 27744589 A JP27744589 A JP 27744589A JP 2623865 B2 JP2623865 B2 JP 2623865B2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- slit
- groove
- door
- partition plate
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
- H05B6/763—Microwave radiation seals for doors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Electric Ovens (AREA)
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器用のスリットタイプ電波シール
に関するものである。特に電子レンジで一般的であるド
ア部の溝部カバーや、ドアの開閉用のヒンジ部を備えた
場合に関するものである。Description: TECHNICAL FIELD The present invention relates to a slit type radio wave seal for a high frequency heater. In particular, the present invention relates to a case in which a groove cover of a door portion, which is common in a microwave oven, and a hinge portion for opening and closing the door are provided.
従来の技術 従来より電子レンジのドアの電波シール構造としてチ
ョーク溝の一部や、内部に遅波線路のような複数のスリ
ットを設けることにより、シール性能を高めることは良
く知られている。しかし商品としての電子レンジのドア
を考えた場合、ユーザーの長年の使用に耐えるドアヒン
ジ構造やチョーク部を保護し、かつ美観を形成するため
の溝開孔部カバーの取り付けがぜひ必要である。しかし
従来よりこれらの構造物はヒンジ強度やカバーの取り付
け具合いのみに配慮した設計がされ、スリットシール性
能に対しての配慮はなされていなかった。2. Description of the Related Art Conventionally, it is well known that a sealing performance of a microwave oven door is improved by providing a plurality of slits such as a slow-wave line in a part of a choke groove or as an internal part thereof as a radio wave seal structure of a microwave oven door. However, when considering a microwave oven door as a product, it is necessary to protect the door hinge structure and the chalk portion that can withstand long-term use by the user and to attach a groove opening portion cover to form an aesthetic appearance. However, conventionally, these structures have been designed with consideration given only to the strength of the hinge and the degree of attachment of the cover, and no consideration has been given to slit sealing performance.
発明が解決しようとする課題 従来例の構成においては、スリットに対し無配慮に設
計されたドアヒンジ構造や溝開孔部カバーの取り付け構
造は加熱室開口周縁部と仕切り板のスリットによってつ
くられ仕切り板方向のシール性能確保する遅波線路を乱
してしまう。このため該当箇所より高い電波漏洩を発生
させてしまうという課題があった。スリットシール性能
に対する影響を第４図，第５図にて具体的に説明すれ
ば、まず第４図にて、ドアにもうけられた溝開孔部５に
溝開孔部の内壁６とでチョーク溝７を形成する仕切り板
８が設けられている。仕切り板８には等間隔にスリット
部９が設けられている。スリット部９の寸法は経験と理
論式で設計し決めている。溝開孔部５に溝開孔部カバー
10が設けられ、溝開孔部カバー10は、溝開孔部の周縁外
壁11に突出して設けられたフランジ部12に嵌合固定され
ている。次に第５図をみれば、仕切り板８のスリット部
９と加熱室開口部周辺の開口周縁部９により仕切り板と
平行方向の遅波線路をつくっている。各スリット部９に
はスリットを挾み隣合う端辺間Ａ−Ｂで電界がたってい
る。しかしフランジ部12がスリット部９と仕切り板８と
垂直方向で一部並列して設けられているとフランジ部12
と並列するスリット部９での電界は他のスリット部９と
は異なり、スリットを挾み隣合う端辺間AA−BBで電界が
たたないスリット端辺とフランジ部12端辺間AA−Ｃで電
界がたってしまう。従って各スリット間で同一の電界が
たつ前提で仕切り板方向のシール効果が高くなる様経験
と理論式より設計していたスリット部の寸法はフランジ
12近傍であてはまらなくなってしまった。結果としてフ
ランジ部12近傍部分から他の箇所より高い電波漏洩を発
生させるという課題があった。Problems to be Solved by the Invention In the configuration of the conventional example, the door hinge structure and the groove opening cover mounting structure which are designed without consideration for the slit are formed by the slits of the opening edge of the heating chamber and the partition plate. It will disturb the slow wave line that ensures the sealing performance in the direction. For this reason, there has been a problem that radio wave leakage higher than the corresponding location is generated. The effect on the slit sealing performance will be described in detail with reference to FIGS. 4 and 5. First, in FIG. 4, the groove opening 5 formed in the door is choked by the inner wall 6 of the groove opening. A partition plate 8 forming a groove 7 is provided. The partition plate 8 is provided with slit portions 9 at equal intervals. The dimensions of the slit 9 are designed and determined by experience and theoretical formula. Groove opening cover on groove opening 5
The groove opening cover 10 is provided, and the groove opening cover 10 is fitted and fixed to a flange portion 12 provided to protrude from a peripheral outer wall 11 of the groove opening. Next, referring to FIG. 5, the slit portion 9 of the partition plate 8 and the peripheral edge portion 9 around the opening of the heating chamber form a slow wave line parallel to the partition plate. An electric field is applied to each slit portion 9 at AB between adjacent edges sandwiching the slit. However, if the flange portion 12 is provided in parallel with the slit portion 9 and the partition plate 8 in the vertical direction, the flange portion 12
The electric field in the slit 9 parallel to the slit is different from that of the other slits 9, and the electric field is not applied between the adjacent edges AA-BB between the slits and the flange 12 between the edges AA-C. And an electric field builds up. Therefore, assuming that the same electric field is applied between the slits, the dimensions of the slits, which were designed based on experience and theoretical formulas, were such that the sealing effect in the direction of the partition plate was increased, assuming that the flanges were flanged.
No longer applicable near 12. As a result, there is a problem that a higher radio wave leakage is generated from the vicinity of the flange portion 12 than other portions.
本発明は上記課題を解決する高周波加熱装置を提供す
るものである。The present invention provides a high-frequency heating device that solves the above problems.
課題を解決するための手段 上記の目的を達成するために、本発明は各スリットを
挾む端辺間に電界がたち、スリット端辺とフランジ部間
に仕切り板方向の遅波回路の形成に影響を与える電界が
たたないように、スリット部の両端辺からフランジ部ま
でのすくなくとも一方の距離がスリット部の両端辺間の
距離より長くなるようにフランジ部を構成している。Means for Solving the Problems In order to achieve the above object, the present invention is directed to forming a slow wave circuit in the direction of a partition plate between an edge of a slit and a flange portion by generating an electric field between the edges sandwiching each slit. The flange is configured such that at least one distance from both ends of the slit to the flange is longer than the distance between both ends of the slit so that an electric field exerting no influence is produced.
作用 第６図にて説明すれば、電位差がほぼ同じであれば短
距離間に電界はたちやすい性質があるため、スリット部
９の両端辺直行間AA−BBに比べ距離が長いスリット端辺
とフランジ端辺間AA−Ｃに電界はたたない。またもう一
方のスリット端辺とフランジ端辺間BB−Ｃはスリット部
の両端辺直行間AA−BBに比べ短距離であるが、仕切り板
方向における距離が短いため仕切り板方向の電位差も小
さく仕切り板方向の遅波回路に影響をあたえる電界はた
たない。従ってフランジ部12のスリット部９に対する仕
切り板方向の遅波回路形成への影響を極力なくすことが
できるため、各スリット間で同一の電界がたつ前提で経
験と理論式より設計したスリット寸法にて所定のシール
性能を得ることができる。Operation As described with reference to FIG. 6, if the potential difference is almost the same, the electric field has a property of being easily generated in a short distance. No electric field is applied between AA-C between the flange edges. BB-C between the other slit end and the flange end is shorter than AA-BB between straight lines at both ends of the slit. However, since the distance in the direction of the partition is short, the potential difference in the direction of the partition is small. There is no electric field affecting the slow wave circuit in the plate direction. Therefore, since the influence of the flange portion 12 on the formation of the slow wave circuit in the direction of the partition plate with respect to the slit portion 9 can be minimized, the slit dimensions are designed based on experience and theoretical formulas on the assumption that the same electric field is applied between the slits. A predetermined sealing performance can be obtained.
実施例 以下、本発明の一実施例における加熱装置について図
面とともに説明する。Embodiment Hereinafter, a heating device according to an embodiment of the present invention will be described with reference to the drawings.
第１図と第２図で示すように加熱室１の開口部２には
開閉自在なドア３が設けられている。ドア３には開口部
２の周辺の開口周縁部４と対向して溝開孔部５が設けら
れ、溝開孔部の内壁６とでチョーク溝７を形成する仕切
り板８が設けられている。仕切り板８には等間隔にスリ
ット部９が設けられている。仕切り板８とスリット部９
は経験と理論式よりシール効果が高くなる寸法に設計し
ている。ドアの溝開孔部５には電子レンジの実際の使用
において仕切り板８の保護や汚れ防止のためまたドアの
美観上より溝開孔部カバー10が設けられ、溝開孔部カバ
ー10は、ユーザーの長年に渡る使用によっても外れた
り、緩んだりしないよう溝開孔部の周縁外壁11に突出し
て設けられたフランジ部12に嵌合固定されている。各ス
リット部９ではスリットを挾み隣合う端辺間で電界がた
ち開口周縁部４とで仕切り板８と平行方向の遅波線路を
つくっている。フランジ部12の端辺はスリット部９の両
端辺からすくなくとも一方の距離がスリット部９の両端
辺間の距離より長く構成している。実際にはフランジ部
12はスリット部９に仕切り板８方向と垂直方向で重なら
ないように位置させている。仕切り板８方向に影響する
電界がフランジ部５とスリット部９両端辺間にはたたな
いためフランジ部５のスリット部に対する仕切り板方向
の遅波回路形成にたいしての影響が極力なくなり、経験
と理論式より設計したスリット寸法にて所定のシール性
能を得ている。As shown in FIGS. 1 and 2, an opening 2 of the heating chamber 1 is provided with a door 3 which can be opened and closed. The door 3 has a groove opening 5 facing the opening peripheral edge 4 around the opening 2, and a partition plate 8 that forms a choke groove 7 with the inner wall 6 of the groove opening. . The partition plate 8 is provided with slit portions 9 at equal intervals. Partition plate 8 and slit 9
Is designed to have a seal effect that is higher than the experience and theoretical formula. The groove opening 5 of the door is provided with a groove opening cover 10 for protecting the partition plate 8 and preventing dirt in practical use of the microwave oven and for the sake of aesthetics of the door. It is fitted and fixed to a flange 12 protruding from a peripheral outer wall 11 of the groove opening so as not to be detached or loosened by the user for many years of use. In each slit portion 9, an electric field is generated between adjacent edges across the slit, and the opening peripheral portion 4 forms a slow wave line parallel to the partition plate 8. One end of the flange 12 is at least one longer than both ends of the slit 9 than both ends of the slit 9. Actually flange
Reference numeral 12 is positioned so as not to overlap the slit 9 in the direction perpendicular to the direction of the partition plate 8. Since the electric field affecting the direction of the partition plate 8 does not fluctuate between both ends of the flange portion 5 and the slit portion 9, the influence of the slit portion of the flange portion 5 on the formation of the slow wave circuit in the direction of the partition plate is reduced as much as possible. A predetermined sealing performance is obtained with the slit dimensions designed from the formula.
第２の実施例は第３図で示すように、溝開孔部の周縁
外壁部11に突出して設けられたヒンジ部13が設けられて
おり、第１の実施例と同様にヒンジ部13の端辺はスリッ
ト部９の両端辺からすくなくとも一方の距離がスリット
部９の両端辺間の距離より長く構成し第１の実施例と同
様の効果をえている。In the second embodiment, as shown in FIG. 3, a hinge 13 protruding from the outer peripheral wall 11 of the groove opening is provided, and the hinge 13 is provided similarly to the first embodiment. At least one of the end sides is configured to be longer than the distance between both end sides of the slit portion 9 at least one distance from both end sides of the slit portion 9, and the same effect as in the first embodiment is obtained.
発明の効果 以上のように本発明の加熱装置においては、以下の効
果がえられる。Effects of the Invention As described above, the heating device of the present invention has the following effects.
（１） ユーザーの長年の使用に耐えるドアヒンジ構造
やチョーク部を保護し、かつ美観を形成するための溝開
孔部カバーの取り付け構造を備える電子レンジのドアに
おいて両構造部のスリットシールに対する仕切り板方向
の遅波回路形成への影響を極力なくすことができる。こ
れにより従来よりの経験と理論式より設計したスリット
寸法にて高いシール性能を得ることができる。(1) Partition plates for slit seals of both structural parts in a microwave oven door provided with a door hinge structure that can withstand long-term use of a user and a mounting structure of a groove opening cover for protecting a chalk portion and forming an aesthetic appearance. The influence of the direction on the formation of the slow wave circuit can be minimized. As a result, high sealing performance can be obtained with the slit dimensions designed based on the conventional experience and the theoretical formula.
（２） 従来よりの経験と理論式をつかえるためドアシ
ール部の設計が容易になるとともにスリット部を有する
仕切り板の標準化がしやすくなり共用化をすすめること
ができる。(2) The design of the door seal portion is facilitated because the experience and the theoretical formula from the prior art can be used, and the partition plate having the slit portion can be easily standardized, and the sharing can be promoted.
【図面の簡単な説明】 第１図a,bは本発明の一実施例における高周波加熱装置
のドアシール部の要部斜視図ならびに断面図、第２図は
同高周波加熱装置の概略斜視図、第３図は本発明の第２
の実施例におけるドアシール部の要部斜視図、第４図a,
bは従来例におけるドアシール部の要部斜視図ならびに
断面図、第５図は従来例におけるドアシール部の電界模
式図、第６図は本発明におけるドアシール部の電界模式
図である。 １……加熱室、２……開口部、３……ドア、４……開口
周縁部、５……溝開孔部、６……溝開孔部の内壁、７…
…チョーク溝、８……仕切り板、９……スリット部、10
……溝開孔部カバー、11……溝開孔部の周縁外壁、12…
…フランジ部、13……ヒンジ部。BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1a and 1b are a perspective view and a sectional view of a main part of a door seal portion of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of the high-frequency heating device. FIG. 3 shows the second embodiment of the present invention.
FIG. 4A is a perspective view of a main part of a door seal portion in the embodiment of FIG.
b is a perspective view and a sectional view of a main part of a door seal portion in a conventional example, FIG. 5 is a schematic electric field diagram of a door seal portion in a conventional example, and FIG. 6 is a schematic electric field diagram of a door seal portion in the present invention. 1 ... heating chamber, 2 ... opening, 3 ... door, 4 ... opening edge, 5 ... groove opening, 6 ... inner wall of groove opening, 7 ...
... Choke groove, 8 ... Partition plate, 9 ... Slit part, 10
... Groove opening cover, 11 ... Outer peripheral wall of groove opening, 12 ...
... Flange, 13 ... Hinge.
Claims (2)
記加熱室の開口部に開閉自在なドアと、前記加熱室の開
口部の周辺に開口周縁部と、前記ドアに設けられ前記開
口周縁部と対向した溝開孔部と、前記溝開孔部内に設け
られ、複数のスリット部を有し、前記溝開孔部の内壁と
でチョーク溝を形成する仕切り板と、前記溝開孔部を覆
う溝カバーと、前記溝開孔部の周縁外壁に突出して設け
られ前記溝カバーの一部と嵌合するフランジ部を備え、
前記フランジ部は仕切り板に設けられているスリット部
の両端辺からフランジ部端辺までのすくなくとも一方の
距離がスリット部の両端辺間の距離より長くなるように
構成した高周波加熱装置。1. A heating chamber for heating an object to be heated in a main body, a door which can be opened and closed at an opening of the heating chamber, an opening edge around the opening of the heating chamber, and a door provided at the door. A groove opening facing the opening peripheral edge, a partition plate provided in the groove opening, having a plurality of slits, and forming a choke groove with an inner wall of the groove opening; A groove cover that covers the opening, and a flange that is provided to protrude from a peripheral outer wall of the groove opening and is fitted with a part of the groove cover;
A high-frequency heating apparatus wherein the flange is configured such that at least one distance from both ends of the slit provided on the partition plate to an end of the flange is longer than a distance between both ends of the slit.
記加熱室の開口部に開閉自在なドアと、前記加熱室の開
口部の周辺に開口周縁部と、前記ドアに設けられ前記開
口周縁部と対向した溝開孔部と、前記溝開孔部内に設け
られ、複数のスリット部を有し、前記溝開孔部の内壁と
でチョーク溝を形成する仕切り板と、前記溝開孔部の周
縁外壁に突出して設けられたヒンジ部を備え、前記ヒン
ジ部は仕切り板に設けられたスリット部の両端辺からヒ
ンジ部端辺までのすくなくとも一方の距離がスリット部
の両端辺間の距離より長くなるように構成した高周波加
熱装置。2. A heating chamber for heating an object to be heated in a main body, a door which can be opened and closed at an opening of the heating chamber, an opening edge around the opening of the heating chamber, and a door provided at the door. A groove opening facing the opening peripheral edge, a partition plate provided in the groove opening, having a plurality of slits, and forming a choke groove with an inner wall of the groove opening; A hinge portion protruding from a peripheral outer wall of the opening portion, wherein the hinge portion has at least one distance between both end sides of the slit portion provided on the partition plate and an end portion of the hinge portion between both end sides of the slit portion; A high-frequency heating device configured to be longer than the distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27744589A JP2623865B2 (en) | 1989-10-24 | 1989-10-24 | High frequency heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27744589A JP2623865B2 (en) | 1989-10-24 | 1989-10-24 | High frequency heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03138888A JPH03138888A (en) | 1991-06-13 |
| JP2623865B2 true JP2623865B2 (en) | 1997-06-25 |
Family
ID=17583674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27744589A Expired - Lifetime JP2623865B2 (en) | 1989-10-24 | 1989-10-24 | High frequency heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2623865B2 (en) |
-
1989
- 1989-10-24 JP JP27744589A patent/JP2623865B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03138888A (en) | 1991-06-13 |
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