JPH0570917B2 - - Google Patents
Info
- Publication number
- JPH0570917B2 JPH0570917B2 JP60247409A JP24740985A JPH0570917B2 JP H0570917 B2 JPH0570917 B2 JP H0570917B2 JP 60247409 A JP60247409 A JP 60247409A JP 24740985 A JP24740985 A JP 24740985A JP H0570917 B2 JPH0570917 B2 JP H0570917B2
- Authority
- JP
- Japan
- Prior art keywords
- prevention device
- magnetron
- heating chamber
- air guide
- overtemperature
- 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
Landscapes
- 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装置の異常温度検知し回路
を遮断する温度過昇防止装置の取付構造に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a mounting structure for an overtemperature rise prevention device that detects an abnormal temperature of a high frequency heating device and interrupts the circuit.
従来の技術
従来の例えば第４図に示すように（他の例とし
て実願昭59−179756号公報）のごとく、高周波発
振装置（以下マグネトロン）１の冷却をフアンモ
ータ２で行い、その冷却風を加熱室３内に導くエ
アーガイド４内に庫内照明灯５を設けて金属製エ
アーガイド４の内面の反射を利用して加熱室３内
をより明るく照明する工夫していた。又一方、加
熱室３内の異常温度上昇を検知する温度過昇防止
装置６をマグネトロン１により近くなるように
又、加熱室３の熱伝導をも伝えるようにエアーガ
イド４と加熱室３の両方の熱を伝えるようにエア
ーガイド４と加熱室３の境目近傍に設けていた。Prior Art In the conventional technology, for example, as shown in FIG. 4 (another example is Utility Model Application No. 179756/1983), a high frequency oscillator (hereinafter referred to as magnetron) 1 is cooled by a fan motor 2, and its cooling air is An interior illumination lamp 5 is provided in the air guide 4 that guides the air into the heating chamber 3, and the inside of the heating chamber 3 is illuminated more brightly by utilizing the reflection on the inner surface of the metal air guide 4. On the other hand, the temperature overrise prevention device 6 that detects an abnormal temperature rise in the heating chamber 3 is placed closer to the magnetron 1, and the air guide 4 and the heating chamber 3 are connected to each other so that the heat conduction of the heating chamber 3 is also conducted. It was installed near the boundary between the air guide 4 and the heating chamber 3 to transfer the heat.
発明が解決しようとする問題点
ところが、このような高周波加熱装置の温度過
昇防止装置は最近のめざましい技術進歩により、
又、法的規制等により加熱室の異常温度検知のみ
ならず、マグネトロン１や他の電気部品等の異常
検知をもするため、それぞれに設けていた。例え
ば加熱室３の異常温度上昇検知用、マグネトロン
１の異常温度上昇検知用、フアンモータ２のコイ
ルの異常温度上昇検知用、トランス７の異常温度
上昇検知用等々と設けられていた。なぜならば、
フアンモータ２が異常でロータがロツクしてしま
うと、マグネトロン１が異常に温度が上り、マグ
ネトロン１がついには発振不能になつてしまうこ
とすらあつた。又、フアンモータ２のロータがロ
ツクしてしまうと、更に、トランスに高電流が流
れ、トランス７の絶縁が劣化破壊し発煙発火し、
感電の危険すらあつた。Problems to be Solved by the Invention However, due to recent remarkable technological advances, the overheating prevention device for such high-frequency heating devices has
Furthermore, in accordance with legal regulations, etc., in order to detect not only abnormal temperatures in the heating chamber, but also abnormalities in the magnetron 1 and other electrical parts, etc., each of them was provided. For example, they were provided for detecting an abnormal temperature rise in the heating chamber 3, for detecting an abnormal temperature rise in the magnetron 1, for detecting an abnormal temperature rise in the coil of the fan motor 2, for detecting an abnormal temperature rise in the transformer 7, etc. because,
If the fan motor 2 was abnormal and the rotor locked, the temperature of the magnetron 1 would rise abnormally, and the magnetron 1 would eventually become unable to oscillate. Furthermore, if the rotor of the fan motor 2 locks, a high current will flow through the transformer, causing the insulation of the transformer 7 to deteriorate and break down, causing smoke and fire.
There was even a risk of electric shock.
一方、生産性向上、経済性追求の為に温度過昇
防止装置の設置数を少くする際に、上記の欠点を
カバーする方法をとられていたが、機器の開発の
都度、温度過昇防止装置の設置場所、設置数を試
行錯誤の連続の中で取り組まれていたのであり、
生産性向上、経済性追求、安全性向上等に非常に
困難であるという問題があつた。 On the other hand, when reducing the number of overheating prevention devices installed in order to improve productivity and pursue economic efficiency, methods were taken to cover the above drawbacks, but each time a device was developed, overheating prevention The location and number of devices to be installed was a process of trial and error.
The problem was that it was extremely difficult to improve productivity, pursue economic efficiency, and improve safety.
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、マグネトロン１冷却風の通路に庫内照
明灯５を、その近傍に温度過昇防止装置６を配置
せしめ、マグネトロン１や、トランス７やフアン
モータ２等の部品の異常温度上昇の速やかな検知
とともに加熱室内の異常温度上昇をも検知せし
め、安全性向上はもちろん、機器開発期間短縮、
経済性向上を図ることを目的とする。 The present invention solves these conventional problems by disposing an interior illumination light 5 in the cooling air passage of the magnetron 1 and an overtemperature rise prevention device 6 near it. In addition to quickly detecting abnormal temperature rises in parts such as the fan motor 2, it also detects abnormal temperature rises in the heating chamber, which not only improves safety but also shortens equipment development time.
The purpose is to improve economic efficiency.
問題点を解決するための手段
本発明の高周波加熱装置は、加熱室と、加熱室
へ高周波を供給する高周波加熱発振器と、その発
振器の冷却用フアンモータと、発振器を冷却した
風を導くエアーガイドと、そのエアーガイド内に
設けた庫内照明灯と、機器の異常温度上昇を検知
し回路を遮断する温度過昇防止装置とを備え、温
度過昇防止装置の感熱面が前記庫内照明灯のラン
プ部のほぼ上部に位置するように前記温度過昇防
止装置をエアーガイドの面に設けるものである。Means for Solving the Problems The high-frequency heating device of the present invention includes a heating chamber, a high-frequency heating oscillator that supplies high-frequency waves to the heating chamber, a fan motor for cooling the oscillator, and an air guide that guides air that cools the oscillator. , an interior lighting lamp installed in the air guide, and an overtemperature rise prevention device that detects an abnormal temperature rise in the equipment and shuts off the circuit, and the heat-sensitive surface of the overheating prevention device is connected to the interior lighting light. The overtemperature rise prevention device is provided on the surface of the air guide so as to be located substantially above the lamp portion.
作 用
本発明の高周波加熱装置は、マグネトロン１の
冷却風の通路に庫内照明灯５を配設し、又、庫内
照明灯５の近傍に温度過昇防止装置６を配置せし
めることにより、加熱室３が異常温度上昇した際
にも検知する。また、マグネトロン１が異常温度
上昇した際にも検知するとともに、フアンモータ
２のロータがロツクしてしまうと、トランス７に
高電流が流れ、トランス７の絶縁が劣化破壊し、
発煙発火し、感電の危険すらあつたし、マグネト
ロン１の冷却風が停止することになり、マグネト
ロン１が異常発熱をして真空度低下し再使用不能
になつたり、又、マグネトロン１が異常発熱をし
て、入力部の貫通コンデンサーが溶解し、感電す
る危険があつた。しかし、マグネトロン１の異常
発熱を温度過昇防止装置６が検知することになる
が、その以前に車内照明灯５の周囲の冷却風も停
止するので、その近傍の温度過昇防止装置６が検
知して電気回路を開路させ、高周波発振も停止さ
せることができ、上述したトランス３やマグネト
ロン１の異常を起こす以前に回路を開路でき非常
に安全な機器にすることができるのである。Function The high-frequency heating device of the present invention has an interior illumination light 5 disposed in the cooling air passage of the magnetron 1, and an overtemperature rise prevention device 6 disposed near the interior illumination light 5. It is also detected when the temperature of the heating chamber 3 rises abnormally. It also detects when the magnetron 1 has an abnormal temperature rise, and when the rotor of the fan motor 2 locks, a high current flows through the transformer 7, causing the insulation of the transformer 7 to deteriorate and break down.
There will be smoke and ignition, and there will be a risk of electric shock.The cooling air for magnetron 1 will stop, and magnetron 1 will generate abnormal heat and the vacuum level will drop, making it unusable. As a result, the feedthrough capacitor in the input section melted, creating a risk of electric shock. However, the temperature rise prevention device 6 detects the abnormal heat generation of the magnetron 1, but before that, the cooling air around the vehicle interior light 5 also stops, so the temperature rise prevention device 6 in the vicinity detects it. This makes it possible to open the electric circuit and stop high-frequency oscillation, and the circuit can be opened before the above-mentioned abnormalities occur in the transformer 3 and magnetron 1, making the device extremely safe.
実施例
以下本発明の一実施例の高周波加熱装置を図面
を参照して説明する。従来例と同一部品名につい
ては同一符号を付している。Embodiment A high-frequency heating device according to an embodiment of the present invention will be described below with reference to the drawings. Part names that are the same as those in the conventional example are given the same reference numerals.
第１図に示すように本体内の加熱室３の外の右
側面にマグネトロン１が取りつけられている。そ
の下に、マグネトロン１の高周波発振用電源用ト
ランス７が設置され、両者を冷却すべくフアンモ
ータが、加熱室用の裏板延出面にとりつけられて
いる。マグネトロン１の上方には、高周波発振用
コンデンサー８がある。マグネトロン１を冷却し
た冷却風は点線のごとく、エアーガイド４を通じ
て加熱室３内に導かれ、加熱室３を通過して排出
される。庫内照明灯５はエアーガイド４の横方よ
り差し込まれビス締付されている。温度過昇防止
装置６の感熱面は庫内照明灯５の真上の上方のエ
アーガイド４にビス締付されている。 As shown in FIG. 1, a magnetron 1 is attached to the right side outside the heating chamber 3 inside the main body. A power transformer 7 for high frequency oscillation of the magnetron 1 is installed below it, and a fan motor is attached to the extending surface of the back plate for the heating chamber to cool both. Above the magnetron 1, there is a high frequency oscillation capacitor 8. The cooling air that has cooled the magnetron 1 is guided into the heating chamber 3 through the air guide 4 as shown by the dotted line, passes through the heating chamber 3, and is discharged. The interior illumination light 5 is inserted from the side of the air guide 4 and tightened with screws. The heat-sensitive surface of the overtemperature rise prevention device 6 is screwed to the upper air guide 4 directly above the interior illumination light 5.
次に第２図に示す本発明一実施例の回路図を説
明する。電源コンセントに差し込むプラグ９の次
に、ドア１０の開閉に連動する扉スイツチ１１，
１２、タイマーのタイムスイツチ１３、扉スイツ
チ１１と１２が接点溶着した時、回路をシヨート
して、ヒユーズ１４を開路させて高周波発振を停
止せしめるシヨートスイツチ１５、タイマーのモ
ータ１６、フアンモータ２、トランス７が接続さ
れ、トランス７の２次側には、コンデンサー８、
ダイオード１７、マグネトロン１が接続されてい
る。 Next, a circuit diagram of an embodiment of the present invention shown in FIG. 2 will be explained. Next to the plug 9 that is inserted into the power outlet, there is a door switch 11 that is linked to the opening and closing of the door 10.
12. timer time switch 13; when door switches 11 and 12 have their contacts welded together, a short circuit 15 opens the fuse 14 and stops high frequency oscillation; timer motor 16; fan motor 2; transformer 7. is connected, and on the secondary side of the transformer 7, a capacitor 8,
A diode 17 and a magnetron 1 are connected.
第３図に外観斜視図を示す。 Fig. 3 shows a perspective view of the exterior.
本体内の加熱室３前面に開閉自在に軸支された
扉１０があり、扉１０の横には接続パネル１８が
あり、タイマーのツマミ１９や、扉１０開放用の
ボタン２０がある。 There is a door 10 pivotally supported in front of the heating chamber 3 in the main body so that it can be opened and closed, and next to the door 10 there is a connection panel 18, a timer knob 19, and a button 20 for opening the door 10.
発明の効果
以上のように本発明の高周波加熱装置はマグネ
トロン１の冷却風の通路に庫内照明灯を設け、そ
の庫内照明灯の近傍に温度過昇防止装置を配置せ
しめているので、
(1) 加熱室内の異常温度上昇した際には加熱室壁
からエアーガイドを伝熱して、唯一の温度過昇
防止装置が働き、高周波の発振を停止せしめ安
全な機器となる。また、マグネトロンの異常温
度上昇した際にも、マグネトロンからエアーガ
イドを伝熱して、唯一の温度過昇装置が働き、
高周波の発振を停止せしめ安全な機器となる。
また、フアンモータがロツクしてしまうと、冷
却風が停止するので、マグネトロンが異常に温
度上昇して、唯一の温度過昇防止装置が働き、
高周波の発振が停止し、マグネトロン、トラン
ス等が異常を起こす前に回路が開路し、安全な
機器となる。すなわち、３つの異常状態であれ
ば、従来例であれば、３個の温度過昇防止装置
が必要であつたが、本発明を実施することによ
り、唯一一個の温度過昇防止装置で３つの役目
を果たすので、非常に経済的である。Effects of the Invention As described above, in the high-frequency heating device of the present invention, an internal lighting lamp is provided in the cooling air passage of the magnetron 1, and an overtemperature rise prevention device is placed near the internal lighting lamp. 1) When the temperature in the heating chamber rises abnormally, heat is transferred from the heating chamber wall to the air guide, and the only device that prevents excessive temperature rise is activated, stopping high frequency oscillation, making the device a safe device. Additionally, when the magnetron's temperature rises abnormally, heat is transferred from the magnetron to the air guide, and the only overtemperature device is activated.
It stops high frequency oscillation and becomes a safe device.
Additionally, if the fan motor locks, the cooling air will stop, causing the magnetron to rise in temperature abnormally, causing the only overtemperature prevention device to activate.
The high-frequency oscillation stops and the circuit opens before the magnetron, transformer, etc. can malfunction, making the device safe. In other words, if there are three abnormal conditions, three overheating prevention devices would be required in the conventional example, but by implementing the present invention, only one overheating prevention device can handle three overheating prevention devices. It is very economical as it fulfills its purpose.
(2) 以上のごとく多くの機能を数少い温度過昇防
止装置で役目を果そうとすると、数多い試行錯
誤の連続実験の結果、温度過昇防止装置の設置
場所を決めていたし、又機種がちがえば、新シ
ヤーシ毎に温度過昇防止装置の設置場所を試行
錯誤の連続実験結果で決めていたが本発明のご
とくであれば、マグネトロンの排気用エアーガ
イド内に庫内照明灯を突出させて設け、その庫
内照明灯の近傍に温度過昇防止装置を設けるの
みでよく非常に開発スピードが上り、ひいては
経済的な開発ができるのである。(2) In order to fulfill the many functions described above with a small number of overheating prevention devices, as a result of numerous continuous trials and errors, we decided on the installation location of the overheating prevention device, and also the model. On the other hand, the installation location of the overtemperature prevention device for each new chassis was decided based on the results of continuous trial and error experiments, but in the case of the present invention, the interior lighting lamp would be protruded into the exhaust air guide of the magnetron. It is sufficient to simply install a temperature rise prevention device in the vicinity of the interior lighting, which greatly speeds up development and allows for economical development.
第１図は本発明一実施例の高周波加熱装置の外
装板をとり外した図であり、ａは上面図、ｂは右
側面図、第２図は同装置の回路図、第３図は同装
置の外観斜視図、第４図は第１図相当の従来例を
示す。
１……マグネトロン、２……フアンモータ、３
……加熱室、４……エアーガイド、５……庫内照
明灯、６……温度過昇防止装置、７……トラン
ス、８……コンデンサー、１０……ドア。
FIG. 1 is a diagram with the exterior plate removed of a high-frequency heating device according to an embodiment of the present invention, in which a is a top view, b is a right side view, FIG. 2 is a circuit diagram of the device, and FIG. 3 is a diagram of the same device. FIG. 4, an external perspective view of the device, shows a conventional example corresponding to FIG. 1. 1... Magnetron, 2... Fan motor, 3
...Heating chamber, 4...Air guide, 5...Interior lighting, 6...Temperature rise prevention device, 7...Transformer, 8...Condenser, 10...Door.
Claims (1)
周波発振器と、その発振器の冷却用フアンモータ
と、前記発振器を冷却した風を導くエアーガイド
と、そのエアーガイド内に設けた庫内照明灯と、
機器の異常温度上昇を検知し回路を遮断する温度
過昇防止装置とを備え、前記温度過昇防止装置の
感熱面が前記庫内照明灯のランプ部のほぼ上部に
位置するように前記温度過昇防止装置をエアーガ
イドの面に設ける構成とした高周波加熱装置。1. A heating chamber, a high-frequency oscillator that supplies high-frequency waves to the heating chamber, a fan motor for cooling the oscillator, an air guide that guides the air that cools the oscillator, and an interior lighting lamp provided in the air guide. ,
and an overtemperature rise prevention device that detects an abnormal temperature rise in the equipment and shuts off the circuit, and the temperature rise prevention device is arranged so that the heat-sensitive surface of the overtemperature rise prevention device is located almost above the lamp part of the refrigerator interior light. A high-frequency heating device that has a rise prevention device installed on the surface of the air guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60247409A JPS62108492A (en) | 1985-11-05 | 1985-11-05 | High frequency heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60247409A JPS62108492A (en) | 1985-11-05 | 1985-11-05 | High frequency heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62108492A JPS62108492A (en) | 1987-05-19 |
| JPH0570917B2 true JPH0570917B2 (en) | 1993-10-06 |
Family
ID=17163004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60247409A Granted JPS62108492A (en) | 1985-11-05 | 1985-11-05 | High frequency heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62108492A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0325042Y2 (en) * | 1986-07-10 | 1991-05-31 | ||
| JPS646620A (en) * | 1987-06-26 | 1989-01-11 | Matsushita Electric Industrial Co Ltd | High-frequency heater |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6212165Y2 (en) * | 1979-07-09 | 1987-03-27 | ||
| JPS58165504U (en) * | 1982-04-28 | 1983-11-04 | 株式会社東芝 | High frequency heating device |
| JPS59128005U (en) * | 1983-02-16 | 1984-08-29 | シャープ株式会社 | microwave oven |
-
1985
- 1985-11-05 JP JP60247409A patent/JPS62108492A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62108492A (en) | 1987-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |