JPH0256889A - High-frequency generator for microwave oven - Google Patents
High-frequency generator for microwave ovenInfo
- Publication number
- JPH0256889A JPH0256889A JP20871188A JP20871188A JPH0256889A JP H0256889 A JPH0256889 A JP H0256889A JP 20871188 A JP20871188 A JP 20871188A JP 20871188 A JP20871188 A JP 20871188A JP H0256889 A JPH0256889 A JP H0256889A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- food
- frequency output
- voltage
- commercial power
- 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
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 10
- 235000013305 food Nutrition 0.000 abstract description 25
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 102220107648 rs149921259 Human genes 0.000 abstract 1
- 102220062235 rs749289195 Human genes 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 241000167854 Bourreria succulenta Species 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、高周波を利用し食品を加熱調理する電子レン
ジの高周波発生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 high frequency generator for a microwave oven that uses high frequencies to cook food.
従来の技術
一般に電子レンジの高周波発生装置は、第４図に示すよ
うに、高圧コンデンサー１と高圧ダイオード２とで半波
倍電圧整流回路を形成し、高圧トランス３の２次巻線４
に接続し、高圧ダイオード２には並列にマグネトロン５
を接続して構成していた。また食品の加熱時間を設定す
るため、時限装置としてタイムスイッチ６を高圧トラン
ス３の１次巻線７と直列に接続し商用電源８の大切をし
ていた。ところが、このような高周波発生装置では、商
用周波数の５０Ｈχでの高周波出力が５００Ｗであって
も、６０Ｈｚでは６００Ｗ以上の高周波出力が得られ、
一定の加熱時間では食品を加熱し過ぎるという課題があ
った。このため、従来は商用周波数に応じて専用の高圧
トランスや高圧コンデンサーを使用して高周波出力を一
定していた。2. Description of the Related Art In general, a high-frequency generator for a microwave oven, as shown in FIG.
, and magnetron 5 is connected in parallel to high voltage diode 2.
was connected and configured. Furthermore, in order to set the heating time of the food, a time switch 6 as a timer is connected in series with the primary winding 7 of the high voltage transformer 3 to protect the commercial power supply 8. However, in such a high frequency generator, even if the high frequency output at the commercial frequency of 50Hχ is 500W, a high frequency output of 600W or more can be obtained at 60Hz.
There was a problem that the food would be overcooked if the heating time was fixed. For this reason, conventionally, a dedicated high-voltage transformer or high-voltage capacitor was used to maintain a constant high-frequency output depending on the commercial frequency.
また別の方法として、第５図に示すように、高周波発生
装置の高圧コンデンサー９を２つの容量にし、切り替え
リレー１０を設けて、商用周波数に応じて容量に切り替
え、高周波出力を一定にしていた。（特発昭和５３−１
９０９１号公報）発明が解決しようとする課題
しかしながら、前者のように商用周波数に応じて専用の
高圧トランスや高圧コンデンサーを使用することは、同
一機種でありながら５０Ｈｚ仕様、６０Ｈｚ仕様を考慮
しながら異なった部品で生産しなければならなく、生産
管理面、商品管理面の不都合が生じていた。また、電子
レンジを購入後に消費者が商用周波数の異なる地域に転
居する時には、その周波数に応じた専用の高圧トランス
や高圧コンデンサーと交換する必要があり、消費者に部
品費用の負担や、販売店での交換の手間がかかるという
課題もあった。As another method, as shown in Fig. 5, the high-voltage capacitor 9 of the high-frequency generator has two capacitances, and a switching relay 10 is provided to switch the capacitance according to the commercial frequency, thereby keeping the high-frequency output constant. . (Special train 1973-1
9091 Publication) Problems to be Solved by the Invention However, the use of dedicated high voltage transformers and high voltage capacitors depending on the commercial frequency as in the former case is different when considering the 50Hz specification and 60Hz specification even though they are the same model. The product had to be manufactured using imported parts, which caused inconveniences in terms of production management and product management. In addition, when a consumer moves to an area with a different commercial frequency after purchasing a microwave oven, it is necessary to replace the high-voltage transformer and high-voltage condenser with a dedicated high-voltage transformer and high-voltage condenser for that frequency, which burdens the consumer with parts costs and the dealer's There was also the problem that it took a lot of time to replace the parts.
また、後者の方法も商用周波数を判定するためにマイク
ロプロセッサ−を必要としたり、あるいは切り替えスイ
ッチを器体外部に設けて使用者が商用周波数に応じて切
り替える必要があった。そのため部品費用がかかると共
に、マイクロプロセッサ−の場合の誤動作や、器体外部
の切り替えスイッチの誤操作による安全性で課題があっ
た。Furthermore, the latter method also requires a microprocessor to determine the commercial frequency, or requires a changeover switch to be provided outside the device so that the user can switch according to the commercial frequency. As a result, parts costs were high, and there were safety issues due to malfunctions of the microprocessor and erroneous operation of the changeover switch on the outside of the device.
本発明はこのような従来の課題を解決するものであり、
簡単な構成で商用周波数の５０Ｈｚ、６０Ｈ！に関わら
ず食品を加熱することができる優れた電子レンジ用高周
波発生装置を提供するものである。The present invention solves these conventional problems,
Commercial frequencies of 50Hz and 60H with a simple configuration! The purpose of the present invention is to provide an excellent high-frequency generator for a microwave oven that can heat food regardless of the temperature.
課題を解決するための手段
そこで本発明は高圧トランスと高圧コンデンサーと高圧
ダイオードとマグネトロンとからなる高周波発生装置と
、高圧トランスの１次巻線に接続した商用電源を時限に
より入切する時限装置とを備え、６０Ｈｚの商用電源で
得られる高周波出力が５０Ｈｚの商用電源で得られる高
周波出力のｔ１〜１．３倍になるよう高周波発生装置を
構成し、時限装置の時限を５０Ｈｚの商用電源で得られ
る時限が６０Ｈｚの商用電源で得られる時限の１．１〜
１．３倍になるように構成したものである。Means for Solving the Problems The present invention provides a high-frequency generator comprising a high-voltage transformer, a high-voltage capacitor, a high-voltage diode, and a magnetron, and a timer for turning on and off the commercial power supply connected to the primary winding of the high-voltage transformer. The high frequency generator is configured so that the high frequency output obtained with a 60 Hz commercial power source is t1 to 1.3 times the high frequency output obtained with a 50 Hz commercial power source, and the time limit of the timer is set so that the high frequency output obtained with a 50 Hz commercial power source is The time limit obtained is 1.1 to the time limit obtained with a 60Hz commercial power supply.
It is configured so that it becomes 1.3 times as large.
作 用
本発明の電子レンジ用高周波発生装置は、６０Ｈｚの商
用電源で得られる高周波出力が５０Ｈｚの商用電源で得
られる高周波出力の１．１〜１．３倍になるよう構成し
、時限装置の時限を５０Ｈｚの商用電源で得られる時限
が６０Ｈｚの商用電源で得られる時限の１．１〜１．３
倍になるように構成したものであるので、５０Ｈｚの時
に食品を加熱する高周波出力と加熱時間との積による積
算量と、６０Ｈｚの時に食品を加熱する高周波出力と加
熱時間との積による積算量とは同一になり、商用周波数
の５０Ｈｚ、６０Ｈｚに関係なく一定のエネルギーを食
品に与えることになり、均一な食品調理を可能にする。Function The high frequency generator for a microwave oven of the present invention is configured so that the high frequency output obtained from a 60 Hz commercial power supply is 1.1 to 1.3 times the high frequency output obtained from a 50 Hz commercial power supply, and the timer The time limit obtained with a 50Hz commercial power source is 1.1 to 1.3 of the time limit obtained with a 60Hz commercial power source.
Since it is configured to double, the integrated amount is the product of the high frequency output that heats food at 50 Hz and the heating time, and the integrated amount that is the product of the high frequency output that heats food and the heating time at 60 Hz. This means that constant energy is given to food regardless of the commercial frequency of 50Hz or 60Hz, making it possible to cook food uniformly.
さらに、５０Ｈｚ、６０Ｈｚそれぞれ専用の高圧トラン
スや高圧コンデンサーなどを使用することもなく、゛ま
た５０Ｈｚ、６０Ｈｚにより切り替える２容量高圧コン
デンサーや、切り替えスイッチなどを使用することが全
（な（なるものである。Furthermore, there is no need to use high-voltage transformers or high-voltage capacitors dedicated to 50Hz and 60Hz, and it is possible to use dual-capacity high-voltage capacitors and changeover switches that switch between 50Hz and 60Hz. .
実施例
以下、本発明の一実施例の電子レンジ用高周波発生装置
を図面を参照して説明する。EXAMPLE Hereinafter, a high frequency generator for a microwave oven according to an example of the present invention will be explained with reference to the drawings.
第１図に示すように、高圧コンデンサー１１と高圧ダイ
オード１２とで半波倍電圧整流回路を形成し、高圧トラ
ンス１３の２次巻線１４に接続し、高圧ダイオード１２
には並列にマグネトロン１５を接続して高周波発生装置
を構成する。また食品の加熱時間を設定するため、時限
装置として同期型電動機１６で駆動するタイムスイッチ
１７を高圧トランス１３の１次巻線１８と直列に接続し
商用電源８の大切をしている。この高周波発生装置は、
高圧トランス１３の１次電圧と高周波出力との関係を商
用周波数５０Ｈｚ、６０Ｈ２ごとに対比して示す第２図
のように、高圧トランス１３の１次電圧が１００ｖの時
に、５０Ｈｚの高周波出力をｐｓｏとし、５ＱＨｚの高
周波出力をＰ２Ｏとすると、Ｐ２Ｏ−１，２ＸＰ５０の
関係を持つよう搾成している。As shown in FIG. 1, a half-wave voltage doubler rectifier circuit is formed by a high-voltage capacitor 11 and a high-voltage diode 12, and is connected to a secondary winding 14 of a high-voltage transformer 13.
A magnetron 15 is connected in parallel to constitute a high frequency generator. Further, in order to set the heating time of the food, a time switch 17 driven by a synchronous motor 16 is connected in series with the primary winding 18 of the high voltage transformer 13 as a timer to protect the commercial power source 8. This high frequency generator is
As shown in Figure 2, which shows the relationship between the primary voltage of the high-voltage transformer 13 and the high-frequency output for each commercial frequency of 50Hz and 60H2, when the primary voltage of the high-voltage transformer 13 is 100V, the high-frequency output of 50Hz is pso If the high frequency output of 5QHz is P2O, then the relationship is expressed as P2O-1, 2XP50.
また、加熱時間を決める時限装置として回期型電動機１
６で駆動するタイムスイッチ１７は、同期型電動機１６
の回転数が周波数に比例の関係があるので、５０８！の
時限を７５０とし、６０Ｈｚの時限を７６０とすると、
Ｔ２Ｏ−１，２ＸＴ６０の関係になる。従って、５０Ｈ
ｚの時に食品を加熱する高周波出力と加熱時間との積に
よる積算量と、６０Ｈｚの時に食品を加熱する高周波出
力と加熱時間との積による積算量とは同一になり、商用
周波数の５０Ｈｚ、６０Ｈｚに関係なく一定のエネルギ
ーを食品に与えることになり、均一な食品調理を可能に
する。さらに、５０Ｈｚ、６０Ｈχそれぞれ専用の高周
波発生装置を使用することなく、また５０Ｈｚ、６０Ｈ
ｚにより切り替える高圧コンデンサーや、切り替えスイ
ッチなどを使用することが全くなくなり、生産管理面、
商品管理面で有利になると共に、電子レンジを購入後に
消費者が商用周波数の異なる地域に転居する時にも、そ
の周波数に応じた専用の高圧トランスや高圧コンデンサ
ーを交換する必要がなく、消費者に部品費用の負担や、
販売店での交換もなくなりさらに有利になる。In addition, a reciprocal electric motor 1 is used as a timer to determine the heating time.
The time switch 17 driven by the synchronous motor 16
Since the number of rotations is proportional to the frequency, 508! If the time limit of is 750 and the time limit of 60Hz is 760, then
The relationship is T2O-1, 2XT60. Therefore, 50H
The integrated amount based on the product of the high frequency output and heating time that heats food when the frequency is z is the same as the integrated amount that is the product of the high frequency output that heats the food and the heating time when the frequency is 60 Hz. It provides a constant amount of energy to the food regardless of the temperature, allowing for uniform food cooking. Furthermore, 50Hz and 60Hχ can be generated without using high frequency generators dedicated to each.
There is no need to use high-voltage capacitors or changeover switches that are switched by z, and production management is improved.
In addition to being advantageous in terms of product management, when a consumer moves to an area with a different commercial frequency after purchasing a microwave oven, there is no need to replace the dedicated high-voltage transformer or high-voltage condenser for that frequency, making it convenient for the consumer. Burden of parts costs,
There will be no need to exchange at the store, making it even more advantageous.
次に、本発明の第２の一実施例の電子レンジ用高周波発
生装置を１面を参照して説明すると、第３図に示すよう
に、高圧コンデンサー１１と高圧ダイオード１２とで半
波倍電圧整流回路を形放し、高圧トランス１３の２次巻
線１４に接続し、高圧ダイオード１２には並列にマグネ
トロン１５を接続して高周波発生装置を構成し、高圧ト
ランス１３の１次電圧と高周波出力との関係を、高圧ト
ランス１３の１次電圧が１００Ｖの時に、５０Ｈｚの高
周波出力をＰ２Ｏとし、６０Ｈｚの高周波出力をＰ２Ｏ
とすると、Ｐ２Ｏ−１，２ＸＰ５０の関係を持つよう構
成するのは前記の一実施例と同じであるが、時限装置と
して同期型電動櫻で駆動するタイムスイッチの代わりに
、電磁リレー１９使用し、高圧トランス１３の１次巻線
１８と直列に接続して、５０Ｈｚの時限の７５０と、６
０Ｈｚの時限の７６０を７５０−１．２ＸＴ６０の関係
になるように商用電源の入切の制御することにより、５
０Ｈｚの時に食品を加熱する高周波出力と加熱時間との
積による積算量と、６０Ｈｚの時に食品を加熱する高周
波出力と加熱時間との積による積算量とは同一になり、
商用周波数の５０Ｈｚ、６０Ｈｚに関係なく一定のエネ
ルギーを食品に与えることになり、第１の一実施例と同
一効果を得られる。Next, the high frequency generator for a microwave oven according to the second embodiment of the present invention will be explained with reference to the first page.As shown in FIG. The rectifier circuit is left open and connected to the secondary winding 14 of the high-voltage transformer 13, and the magnetron 15 is connected in parallel to the high-voltage diode 12 to constitute a high-frequency generator, and the primary voltage of the high-voltage transformer 13 and the high-frequency output are The relationship is, when the primary voltage of the high voltage transformer 13 is 100V, the high frequency output of 50Hz is P2O, and the high frequency output of 60Hz is P2O.
Then, the configuration to have the relationship of P2O-1, 2XP50 is the same as in the above embodiment, but an electromagnetic relay 19 is used as a timer instead of a time switch driven by a synchronous electric cherry blossom. Connected in series with the primary winding 18 of the high voltage transformer 13, 750 and 6
By controlling the on/off of commercial power so that the 0Hz time limit 760 becomes the relationship 750-1.2XT60, 5
The integrated amount obtained by multiplying the high-frequency output that heats food at 0 Hz and the heating time is the same as the integrated amount obtained by multiplying the high-frequency output and heating time that heats food at 60 Hz.
A constant amount of energy is given to the food irrespective of the commercial frequency of 50 Hz or 60 Hz, and the same effect as the first embodiment can be obtained.
なお、時限装置として一期型電動轡で駆動するタイムス
イッチや電磁リレーを使手したが、代わりに半導体のス
イッチ素子などスイッチ部品を使用し、高圧トランスの
１次巻線と直列に接続して、５０Ｈｚの時限の７５０と
、６０Ｈｚの時限のＴ２Ｏを７５０−１．２ｘＴ６０（
７）関係ニナルように商用電源の大切制御することによ
り、同じ効果を得られることはいうまでもない。In addition, although we used a time switch and an electromagnetic relay driven by a first-stage electric car as a timing device, we used a switch component such as a semiconductor switch element instead, and connected it in series with the primary winding of a high-voltage transformer. , 750 with a 50Hz time period and T2O with a 60Hz time period of 750-1.2xT60 (
7) It goes without saying that the same effect can be obtained by carefully controlling the commercial power supply.
発明の効果
以上のように本発明の電子レンジ用高周波発生装置は、
食品を加熱する高周波出力と加熱時間との積による積算
量が、商用周波数の５０Ｈｚ、６０Ｈｚ関係なく同一に
なり、同一のエネルギーを食品に与えて均一な食品調理
を可能にするものであり、次のような効果を有している
。Effects of the Invention As described above, the high frequency generator for microwave ovens of the present invention has the following advantages:
The integrated amount of food heated by the product of high frequency output and heating time is the same regardless of the commercial frequency of 50 Hz or 60 Hz, giving the same energy to food and making it possible to cook food uniformly. It has an effect like this.
（１）同一機種であっても、５０Ｈｚ仕様、６０Ｈｚ仕
様に応じて専用の高圧トランスや高圧コンデンサーなど
使用する必要がなくなり、生産時において周波数による
専用部品を使い分けたり、製品検査の特性規格を切り替
えたり、あるいは出荷区分表示をする必要もなくなり生
産性の向上ができた。(1) Even for the same model, it is no longer necessary to use dedicated high-voltage transformers and high-voltage capacitors depending on the 50Hz and 60Hz specifications, and it is now possible to use dedicated parts depending on the frequency during production and switch the characteristic standards for product inspection. There is no longer a need to display shipping classifications or shipping classifications, which improves productivity.
［２１５０Ｈｚ仕様、６０Ｈｚ仕様の区分がなくなった
ので、製品在庫時にも区分保管の必要もなく、商用周波
数に応じて出荷発送する必要もなくなった。また従来の
ように商用周波数地域に応じた需要を予測して在庫し、
一部面用周波数地域が不足し、他地域が余剰した時でも
、製品を地域転送をしたり、製品の周波数専用部品を改
造する必要がなくなり商品管理上も非常に便利の良いも
のになった。[Since the classification of 2150 Hz specifications and 60 Hz specifications has been eliminated, there is no need for separate storage during product inventory, and there is no need to ship products according to commercial frequencies. In addition, as in the past, we forecast demand according to the commercial frequency area and stock it.
Even when there is a shortage of frequency in one region and a surplus in another region, there is no need to transfer the product to another region or modify the frequency-specific parts of the product, making it extremely convenient for product management. .
（３）電子レンジを購入後に消費者が商用周波数の異な
る地域に転居しても、製品の周波数専用部品を改造する
必要がなくなり、消費者に部品費用の負担や、販売店で
の交換の半面がなくなり非常に便利の良いものになった
。(3) Even if a consumer moves to an area with a different commercial frequency after purchasing a microwave oven, there is no need to modify the frequency-specific parts of the product, leaving the consumer with the burden of parts costs and having to replace them at the retailer. It has become very convenient.
（４）使用する商用周波数に応じて、商用周波数の判定
のための、マイクロプロセッサ−や、２容量高圧コンデ
ンサーや、切り替えスイッチなど余分な電子回路を必要
にしないので、マイクロプロセッサ−や、切り替えスイ
ッチの誤動作による危険の発生の防止ができる。(4) Depending on the commercial frequency to be used, extra electronic circuits such as a microprocessor, 2-capacity high-voltage capacitor, and changeover switch are not required for determining the commercial frequency; It is possible to prevent danger from occurring due to malfunction.
また、切り替えスイッチを器体外部に設けて使用者が商
用周波数に応じて切り替える方法でも、使用者が操作を
忘れたり、誤操作による危険の防止ができる。Alternatively, a method in which a changeover switch is provided outside the device body and the user switches the switch according to the commercial frequency can also prevent the user from forgetting to operate the switch or from erroneously operating the switch.
第１図は本発明の一実施例における電子レンジ用高周波
発生装置の構成を示す回路図、第２図はその高周波発生
装置の高圧トランスの１次電圧と高周波出力との関係を
示す特性図、第３図は本発明の第２の実施例における電
子レンジ用高周波発生装置の構成を示す回路図、第４図
、第５図はそれぞれ従来の電子レンジ用高周波発生装置
の構成を示す回路図である。
８・・・・・・商用電源、１１・・・・・・高圧コンデ
ンサー１２・・・・・・高圧ダイオード、１３・・・・
・・高圧トランス、１４・・・・・・２次巻線、１５・
・・・・・マグネトロン、１６・・・・・・回期型電動
機、１７・・・・・・タイムスイッチ、１８・・・・・
・１次巻線、１９・・・・・・電磁リレー代理人の氏名
弁理士 粟 野 重 孝 ほか１名第１図
１２図
→１次を圧
１Ｆ３図
第５図
８−・−
Ｉ＋ −一−
１２−−・
１４ −・−
ｒｓ −−−
／６ ＝−
１７・・・
ｆ８ ・・・
商用電源
＆圧コーＪ手ンサー
高圧タイオード
ｌ＆圧ヒトラン
ス次魯縄
マグネトロン
ｗＩＩｌｌｌＩ型電動機
タ イ ム ス イ ッ チＩｆＡ魯練FIG. 1 is a circuit diagram showing the configuration of a high-frequency generator for a microwave oven in an embodiment of the present invention, and FIG. 2 is a characteristic diagram showing the relationship between the primary voltage of the high-voltage transformer of the high-frequency generator and the high-frequency output. FIG. 3 is a circuit diagram showing the configuration of a high frequency generator for a microwave oven according to a second embodiment of the present invention, and FIGS. 4 and 5 are circuit diagrams each showing the configuration of a conventional high frequency generator for a microwave oven. be. 8... Commercial power supply, 11... High voltage capacitor 12... High voltage diode, 13...
...High voltage transformer, 14...Secondary winding, 15.
...Magnetron, 16...Returnable motor, 17...Time switch, 18...
・Primary winding, 19... Name of electromagnetic relay agent: Patent attorney Shigetaka Awano and one other person Figure 1 Figure 12 → Pressure 1F3 Figure 5 Figure 8 - I+ -1 − 12 −−・ 14 −・− rs −−− /6 = − 17... f8 ... Commercial power supply & pressure cord J hand sensor high voltage diode l & pressure transformer next Rinawa magnetron wIIllllI type electric motor time switch IfA Luren
Claims (1)
グネトロンとからなる高周波発生装置と、前記高圧トラ
ンスの１次巻線に接続した商用電源を時限により入切す
る時限装置とを備え、６０Ｈｚの商用電源で得られる高
周波出力が５０Ｈｚの商用電源で得られる高周波出力の
１．１〜１．３倍になるよう高周波発生装置を構成し、
前記時限装置の時限を５０Ｈｚの商用電源で得られる時
限が６０Ｈｚの商用電源で得られる時限の１．１〜１．
３倍になるように構成した電子レンジ用高周波発生装置
。It is equipped with a high-frequency generator consisting of a high-voltage transformer, a high-voltage capacitor, a high-voltage diode, and a magnetron, and a timer that turns on and off the commercial power supply connected to the primary winding of the high-voltage transformer according to a time limit, and can be obtained from a 60Hz commercial power supply. The high frequency generator is configured so that the high frequency output is 1.1 to 1.3 times the high frequency output obtained from a 50 Hz commercial power supply,
The time limit of the timer device is set to 1.1 to 1.1, which is the time limit obtained with a 50 Hz commercial power source and the time limit obtained with a 60 Hz commercial power source.
A high frequency generator for microwave ovens configured to triple the frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20871188A JPH0256889A (en) | 1988-08-23 | 1988-08-23 | High-frequency generator for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20871188A JPH0256889A (en) | 1988-08-23 | 1988-08-23 | High-frequency generator for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0256889A true JPH0256889A (en) | 1990-02-26 |
Family
ID=16560816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20871188A Pending JPH0256889A (en) | 1988-08-23 | 1988-08-23 | High-frequency generator for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0256889A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604405A (en) * | 1993-07-07 | 1997-02-18 | Hitachi, Ltd. | Magnetron with feed-through capacitor having a dielectric constant effecting a decrease in acoustic noise |
| US5830318A (en) * | 1996-10-25 | 1998-11-03 | Schweitzer-Mauduit International, Inc. | High opacity tipping paper |
| US7132926B2 (en) | 2004-03-25 | 2006-11-07 | Prince Castle, Inc. | Smart tray system and method for restaurant inventory management |
| USRE42077E1 (en) * | 1997-05-27 | 2011-01-25 | Savage John K | Computer system for maintaining current and predicting future food needs |
| US10373223B2 (en) | 2012-11-12 | 2019-08-06 | Restaurant Technology Inc. | System and method for receiving and managing remotely placed orders |
| US10640357B2 (en) | 2010-04-14 | 2020-05-05 | Restaurant Technology Inc. | Structural food preparation systems and methods |
| US11278157B2 (en) | 2018-03-22 | 2022-03-22 | Marmon Foodservice Technologies, Inc. | Food tray |
-
1988
- 1988-08-23 JP JP20871188A patent/JPH0256889A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604405A (en) * | 1993-07-07 | 1997-02-18 | Hitachi, Ltd. | Magnetron with feed-through capacitor having a dielectric constant effecting a decrease in acoustic noise |
| US5830318A (en) * | 1996-10-25 | 1998-11-03 | Schweitzer-Mauduit International, Inc. | High opacity tipping paper |
| USRE42077E1 (en) * | 1997-05-27 | 2011-01-25 | Savage John K | Computer system for maintaining current and predicting future food needs |
| US7132926B2 (en) | 2004-03-25 | 2006-11-07 | Prince Castle, Inc. | Smart tray system and method for restaurant inventory management |
| US10640357B2 (en) | 2010-04-14 | 2020-05-05 | Restaurant Technology Inc. | Structural food preparation systems and methods |
| US10373223B2 (en) | 2012-11-12 | 2019-08-06 | Restaurant Technology Inc. | System and method for receiving and managing remotely placed orders |
| US11278157B2 (en) | 2018-03-22 | 2022-03-22 | Marmon Foodservice Technologies, Inc. | Food tray |
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