JPS60236490A - High frequency heating device - Google Patents
High frequency heating deviceInfo
- Publication number
- JPS60236490A JPS60236490A JP59092320A JP9232084A JPS60236490A JP S60236490 A JPS60236490 A JP S60236490A JP 59092320 A JP59092320 A JP 59092320A JP 9232084 A JP9232084 A JP 9232084A JP S60236490 A JPS60236490 A JP S60236490A
- Authority
- JP
- Japan
- Prior art keywords
- power
- frequency
- transformer
- heating device
- magnetron
- 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
- Control Of High-Frequency Heating Circuits (AREA)
- Inverter Devices (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、昇圧トランスで昇圧された高電圧を印加され
たマグネトロンが発生する高周波で食品を加熱する、家
庭用調理器である高周波加熱装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high-frequency heating device, which is a home cooking device, and which heats food using high-frequency waves generated by a magnetron to which a high voltage boosted by a step-up transformer is applied. It is.
従来例の構成とその問題点
従来の高周波加熱装置は、家庭用の商用周波数電源を用
い、マグネトロンに昇圧トランスで高電圧を印加し、高
周波を発生させている。加熱機器であるので、家庭用機
器としては電力は大きなものになり、昇圧トランスも大
形化で重量の重いものになっている。家庭用の交流電源
を用いているためと、大形重量化構造のため屋外で使用
するポータプル化が困難であった。Configuration of conventional example and its problems Conventional high-frequency heating devices use a household commercial frequency power supply and apply high voltage to a magnetron with a step-up transformer to generate high-frequency waves. Since it is a heating device, the electric power is large for a household device, and the step-up transformer is also large and heavy. Because it uses a household AC power source and because of its large and heavy structure, it was difficult to convert it into a portable device for outdoor use.
発明の目的
本発明は直流電源である電池から交流電圧を得て、可搬
型の高周波加熱装置にするとともに、動作同伴数を商用
周波数より高いものにして、電源の大形化と重量化を改
善し、持運びに便利な構造にすることを目的としている
。又電源構造を簡素化することも目的とじている。Purpose of the Invention The present invention obtains alternating current voltage from a battery, which is a direct current power source, to create a portable high-frequency heating device, and also improves the size and weight of the power source by making the operating entrainment higher than the commercial frequency. The purpose is to create a structure that is convenient to carry. Another purpose is to simplify the power supply structure.
発明の構成
本発明は直流電源である電池の電力を、電池と昇圧トラ
ンスの間に設けた制御素子で矩形波交流に変換し、昇圧
トランスに印加するようにしたものである。その矩形波
は簡単な発振器で得て、しかも商用周波数よりも高い周
波数にして、制御素子を駆動するようにしている。Structure of the Invention The present invention converts the power of a battery, which is a DC power source, into a rectangular wave alternating current using a control element provided between the battery and a step-up transformer, and applies the rectangular wave alternating current to a step-up transformer. The rectangular wave is obtained by a simple oscillator, and the frequency is higher than the commercial frequency to drive the control element.
実施例の説明 以下図面に従い本発明の一実施例を説明する。Description of examples An embodiment of the present invention will be described below with reference to the drawings.
図において、１は加熱室に高周波を給電するマグネトロ
ン、２はマグネトロン１に高電圧を印加するための昇圧
トランス、３は昇圧トランス２の２次側に接続したダイ
オードで高圧コンデンサ４と共に倍電圧整流回路を構成
し、マグネトロン１に昇圧トランス２の高圧電力を単一
方向化して供給している。In the figure, 1 is a magnetron that supplies high-frequency power to the heating chamber, 2 is a step-up transformer for applying high voltage to the magnetron 1, and 3 is a diode connected to the secondary side of the step-up transformer 2, which is a voltage doubler rectifier together with a high-voltage capacitor 4. A circuit is configured to supply high-voltage power from a step-up transformer 2 to the magnetron 1 in a unidirectional manner.
５と６は直流電源である電池、７と８は制御素子として
のパワートランジスターで、夫々電池６と６の両端に形
成される直流電源に、昇圧トランス２の１次側の負荷回
路と直列に接続され、昇圧トランス２への電流を制御す
る。９と１０は小信号である制御信号を増幅してパワー
トランジスター７と８に送る制御用トランジスターであ
る。パワートランジスター７と８は交互に動作し、負荷
回路に交流を供給する構成となっている。１１がこのパ
ワートランジスター７と８を交互に動作させるための制
御回路で、パワートランジスター７と８の制御用トラン
ジスター９と１０に交互に制御電流を流している。Reference numerals 5 and 6 indicate batteries as DC power supplies, and 7 and 8 indicate power transistors as control elements, which are connected in series to the DC power supply formed across the batteries 6 and 6, respectively, and the load circuit on the primary side of the step-up transformer 2. connected to control the current to the step-up transformer 2. Control transistors 9 and 10 amplify small control signals and send them to power transistors 7 and 8. Power transistors 7 and 8 operate alternately to supply alternating current to the load circuit. Reference numeral 11 denotes a control circuit for alternately operating the power transistors 7 and 8, which alternately supplies a control current to the control transistors 9 and 10 of the power transistors 7 and 8.
このようなもので構成される高周波加熱装置において、
制御素子としてのパワートランジスター７と８に、商用
周波数よりも高い周波数、例えば２４０Ｈｚの矩形波を
制御電流として印加し、パワートランジスター７．８と
してはこの周波数で開閉の動作をさせるようにしたもの
が本発明である。In a high-frequency heating device composed of such a device,
A rectangular wave with a frequency higher than the commercial frequency, for example, 240 Hz, is applied as a control current to the power transistors 7 and 8 as control elements, and the power transistors 7 and 8 are made to open and close at this frequency. This is the present invention.
１２がこの商用周波数より高い周波数の矩形波発振回路
で、回路内の抵抗ＲとコンデンサＣとで所定の周波数が
得られる。発振回路１２で得られた矩形波小信号を制御
回路１１に与えると、制御回路１１はパワートランジス
ター７と８に交互に制御電流を流し、パワートランジス
ター７と８は交互に開閉を繰返し、負荷に対し矩形波交
流電圧を印加する結果となる。１３はパワートランジス
ター７と８からなる矩形波電源回路と昇圧トランス２の
間に設けられたフィルター回路で高周波分を除去する役
割を果す。12 is a rectangular wave oscillation circuit with a frequency higher than this commercial frequency, and a predetermined frequency is obtained by a resistor R and a capacitor C in the circuit. When the small rectangular wave signal obtained by the oscillation circuit 12 is given to the control circuit 11, the control circuit 11 causes a control current to flow alternately to the power transistors 7 and 8, and the power transistors 7 and 8 repeat alternately opening and closing, and supply the load to the load. On the other hand, the result is that a square wave AC voltage is applied. 13 is a filter circuit provided between the rectangular wave power supply circuit consisting of power transistors 7 and 8 and the step-up transformer 2, and serves to remove high frequency components.
このような構成の本発明高周波加熱装置であれば、直流
電源である電池５と６から交流が得られ、昇圧トランス
２で昇圧された高電圧をマグネトロン１に印加できる。With the high frequency heating device of the present invention having such a configuration, alternating current can be obtained from the batteries 5 and 6 as direct current power sources, and a high voltage boosted by the step-up transformer 2 can be applied to the magnetron 1.
しかも商用周波数より高い周波数で動作するので、昇圧
トランス２の磁束は少なくてすみ、鉄心及び巻線を小形
軽量にできる。Moreover, since it operates at a frequency higher than the commercial frequency, the magnetic flux of the step-up transformer 2 can be reduced, and the iron core and winding can be made smaller and lighter.
高周波加熱装置は加熱機器であるので、大電流が流れる
。パワートランジスター７と８にも通電中は大電流が流
れ、通電中にコレクターとエミッター間に電圧が残ると
大きな電力損失を生じる。効率を悪くするとともに、放
熱に大きな装置を必要とする。矩形波で動作させると、
パワートランジスター７と８は交互に開閉を繰返すだけ
で、導通状態と開放状態を形成し、電力損失を最小限で
押えることができ、実用的構造が得られる。簡単な発振
回路１２とか制御回路１１で、電源構造としては簡素化
されたものである。Since the high-frequency heating device is a heating device, a large current flows through it. A large current also flows through the power transistors 7 and 8 while the power is on, and if voltage remains between the collector and emitter while the power is on, a large power loss occurs. This reduces efficiency and requires large equipment for heat dissipation. When operated with a square wave,
The power transistors 7 and 8 form a conductive state and an open state simply by repeating opening and closing alternately, thereby minimizing power loss and providing a practical structure. With a simple oscillation circuit 12 and a simple control circuit 11, the power supply structure is simplified.
発明の効果
このような本発明の構成であれば、直流電源である電池
から交流高電圧が得られ、家庭用の交流電源が要らない
可搬型の高周波加熱装置が得られる。しかも商用周波数
よりも高い周波数で動作するので、昇圧トランスなどの
電源は小形軽量で構成され、持運びに便利なものになる
。その手段である制御素子の電力損失も軽減され、効率
低下も防げた実用的ポータプルタイプの電源が得られる
。Effects of the Invention With the configuration of the present invention as described above, an AC high voltage can be obtained from a battery as a DC power source, and a portable high-frequency heating device that does not require a household AC power source can be obtained. Moreover, since it operates at a frequency higher than the commercial frequency, power supplies such as step-up transformers can be made small and lightweight, making them convenient to carry. The power loss of the control element, which is the means for this purpose, is also reduced, and a practical portable type power source that prevents a decrease in efficiency can be obtained.
図は本発明の一実施例を示す高周波加熱装置の回路図で
ある。
１・・・・・・マグネトロン、２・・団・昇圧トランス
、５゜６・・・・・・電池、７，８・・・・・・パワー
トランジスター（制御素子）、１１・・・・・・制御回
路、１２・・・・・・発振回路。The figure is a circuit diagram of a high frequency heating device showing an embodiment of the present invention. 1... Magnetron, 2... Group step-up transformer, 5゜6... Battery, 7, 8... Power transistor (control element), 11... -Control circuit, 12...Oscillation circuit.
Claims (1)
トロンに高電圧を印加する昇圧トランスと、直流電源を
得る電池と、前記昇圧トランスの１次側と前記電池から
の直流電源との間に偶数個の制御素子とを設け、前記制
御素子を商用周波数より高い周波数の矩形波で交互に動
作させる高周波加熱装置。A magnetron that supplies high frequency power to the heating chamber, a step-up transformer that applies high voltage to the magnetron, a battery that obtains a DC power source, and an even number of DC power sources between the primary side of the step-up transformer and the DC power source from the battery A high-frequency heating device comprising: a control element, and the control element is alternately operated with a rectangular wave having a frequency higher than a commercial frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59092320A JPS60236490A (en) | 1984-05-09 | 1984-05-09 | High frequency heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59092320A JPS60236490A (en) | 1984-05-09 | 1984-05-09 | High frequency heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60236490A true JPS60236490A (en) | 1985-11-25 |
Family
ID=14051095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59092320A Pending JPS60236490A (en) | 1984-05-09 | 1984-05-09 | High frequency heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60236490A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01313884A (en) * | 1988-06-13 | 1989-12-19 | Sharp Corp | High-frequency heating device |
| JPH0456089A (en) * | 1990-06-22 | 1992-02-24 | Sharp Corp | Microwave oven |
-
1984
- 1984-05-09 JP JP59092320A patent/JPS60236490A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01313884A (en) * | 1988-06-13 | 1989-12-19 | Sharp Corp | High-frequency heating device |
| JPH0456089A (en) * | 1990-06-22 | 1992-02-24 | Sharp Corp | Microwave oven |
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