JPH11125429A - Electronic oven and its heating method - Google Patents

Electronic oven and its heating method

Info

Publication number
JPH11125429A
JPH11125429A JP32940597A JP32940597A JPH11125429A JP H11125429 A JPH11125429 A JP H11125429A JP 32940597 A JP32940597 A JP 32940597A JP 32940597 A JP32940597 A JP 32940597A JP H11125429 A JPH11125429 A JP H11125429A
Authority
JP
Japan
Prior art keywords
heating
packaging bag
microwave oven
heating chamber
heated
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
JP32940597A
Other languages
Japanese (ja)
Inventor
Toshio Matsumoto
壽夫 松本
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.)
MATSUMOTO GIKEN KK
Original Assignee
MATSUMOTO GIKEN KK
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 MATSUMOTO GIKEN KK filed Critical MATSUMOTO GIKEN KK
Priority to JP32940597A priority Critical patent/JPH11125429A/en
Publication of JPH11125429A publication Critical patent/JPH11125429A/en
Pending legal-status Critical Current

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  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an electronic oven and a heating method, the electronic oven including an apparatus in which an item to be heated, which is obtained by filling and closing easily putrefactive water-containing food compositions such as bean-curd lees in a packaging bag and is so thick that microwaves can not transmit therethrough, is uniformly heated, kept packaged in the bag, sterilized, dehydrated, cooled, and reduced in a volume thereof, and the electronic oven being easily taken in and out of a heating camber. SOLUTION: In an electronic oven, an item to be heated on a heating table in a heating chamber 6 is irradiated with microwaves from a lower portion so as to be roasted with an oven. Hereupon, the heating chamber 6 is filled with the article up to the neighborhood of a side wall thereof or a mask 19 is applied to a part of surroundings of the article, whereby the microwaves going around an upper portion of the heating chamber is reduced. Hereby, an electronic oven is obtained which is the type where it is heated mainly from a lower portion. A movable heating table 16 is delivered up to an upper portion of a door of the electronic oven, and 5-10 kg bean-curd lees contained in a package bag is easily taken in and out.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は電子レンジに係
り、特に包装袋に充填密封したオカラを、該包装袋のま
ま能率良く加熱殺菌及びまた脱水冷却処理をして資源と
して有効利用することができる電子レンジとその加熱方
法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and in particular, can efficiently use okara packed and sealed in a packaging bag as a resource by heat sterilization and / or dehydration cooling treatment of the packaging bag as it is. The present invention relates to a microwave oven and a heating method thereof.

【0002】[0002]

【従来の技術】豆腐を製造するときに副生するオカラ
は、豆乳を分離した直後では、約70℃の温度と70〜
80%の水分を有し且つ栄養価が高いために大気中で放
置すると空気中の雑菌の好適な培養地となって甚だ腐敗
し易いものである。昔は、食用、飼料などに全てが有効
に利用されていたのであるが、近頃では嗜好の変化等で
殆ど食用にされず、また畜産の場所が豆腐の生産地から
遠く離されるようになって飼料としても利用されなくな
っている。一部は有効利用されているが、その大部分は
腐敗するオカラを地中に埋める、海洋投棄、バイオで分
解処理、乾燥、焼却するなどして処理していたが、この
廃棄に際してもますます費用が嵩む環境となっている。
近年このオカラの廃棄が問題となり、且つ資源として有
効利用することが要望されるようになって、種々処理装
置が提案されているが、その全てが中〜大規模業者向け
の装置である。例えばスクリュー式連続圧搾装置の場合
は、1時間当たりの処理能力が500〜1000kgも
あり、焼却装置、乾燥装置は小型のものでも50kg/
時で、熱エネルギーと広い設置場所が必要であるばかり
でなく、加熱さたオカラからの生じる蒸気が独特の臭気
を放散する大きな欠点があった。一方オカラ生成量が3
0〜70kg/日の小規模(個人規模)の事業所では、
設置場所が狭いために適切な処理装置が無く廃棄のため
の費用(主として集荷業者へ支払う費用)が嵩み日々窮
地に追い込まれつつある状態である。
2. Description of the Related Art Okara, a by-product of tofu production, has a temperature of about 70.degree.
Since it has a water content of 80% and has a high nutritional value, when it is left in the air, it becomes a suitable cultivation place for various bacteria in the air, and is easily rotted. In the past, everything was effectively used for food, feed, etc., but recently it has hardly been eaten due to changes in taste, etc. Also, the place of livestock has become far away from the tofu production area It is no longer used as feed. Some have been used effectively, but most have been treated by burying decaying okara in the ground, dumping at sea, biodegrading it, drying it, and burning it. The environment is expensive.
In recent years, disposal of this okara has become a problem, and there has been a demand for effective use as a resource. Various processing apparatuses have been proposed, but all of them are apparatuses for medium to large-scale companies. For example, in the case of a screw-type continuous pressing device, the processing capacity per hour is as high as 500 to 1000 kg.
At times, not only was thermal energy and a large installation area required, but the major drawback was that the steam generated from the heated okara dissipated a unique odor. On the other hand, the amount of okara generated is 3
In small-scale (personal-scale) establishments of 0-70 kg / day,
Since the installation site is small, there is no appropriate processing equipment, and the cost for disposal (mainly the cost paid to the collection company) is increasing, and it is in a state of being driven into trouble every day.

【0003】本発明者は上記事実に鑑み小規模の事業所
で生成するオカラを廃棄しないで有効利用する方法を種
々研究した結果、発生した直後の新鮮なオカラを新鮮な
まま加熱殺菌し、そして真空包装することができる電子
レンジの開発に成功したものある。この新鮮なまま真空
包装されたオカラは長期間保存に耐え、運搬が容易で、
随時且つ多種の用途に適用され、資源として有効利用さ
れる。本発明において加熱殺菌すると言うことは所謂電
子レンジで加熱することである。そこで従来の電子レン
ジを検討してみた結果、発明者が求めるような機能を持
ったものは無かった。即ち、従来の電子レンジには種々
形があるが、中でもこの使用目的に近い電子レンジとし
ては図1に示すものがある。然し従来の電子レンジ1で
は容積、加熱容量共に小さいのでこのままでは実際に使
用できないのであるが、これを説明のためこの発明のも
のと同等の容量容積が有るものとして比較を述べること
にする。
[0003] In view of the above facts, the present inventor has conducted various studies on a method of effectively using okara produced in a small-scale business facility without discarding it. As a result, fresh okara immediately after generation is sterilized by heating while fresh. Some microwave ovens have been successfully developed for vacuum packaging. This freshly-packaged okara can withstand long-term storage, is easy to transport,
It is applied to various applications as needed and is effectively used as a resource. In the present invention, heat sterilization means heating with a so-called microwave oven. Then, as a result of examining a conventional microwave oven, none of them had a function required by the inventor. That is, there are various types of conventional microwave ovens. Among them, there is a microwave oven close to the intended use as shown in FIG. However, the conventional microwave oven 1 cannot be actually used as it is because both the volume and the heating capacity are small. However, for the sake of explanation, a comparison will be made assuming that there is a capacity volume equivalent to that of the present invention.

【0004】先ず本発明に係るオカラは図2に示すよう
に米袋と同様に5kg又は入りの包装袋2に充填しるも
のとする。そして、水分が70%、温度が70℃、厚さ
が12cmで5kgもあるオカラが入った重い包装袋2
を従来の電子レンジ1の加熱台3の上に乗せなければな
らない。それから該電子レンジ1の扉4を閉じ加熱す
る。加熱台3上の包装袋2に入ってベタ置きにされたオ
カラは、(オカラを「饅頭」に例えれば)、従来の電子
レンジでは、通常「饅頭」の皮に相当する部分が先に加
熱されて高温になり、餡に相当する部分の加熱があまり
進まない、更に加熱を継続すると餡に相当する部分の温
度はあまりれ上がらないで、皮と先端部分が過熱してい
た。図1で5は外殻、6は加熱室である。そして加熱が
終われば、扉4を開けて加熱台3から包装袋2を取り出
さなければならない。従来の電子レンジ1は重い包装袋
2を加熱台3の上に持ち込むのに、そして取り出すのに
手を差し出すような姿勢で行なわなければならないの
で、この電子レンジ1からの出し入れに、包装袋2の重
さに負けてよろけたりして電子レンジ1のどこかに重い
包装袋2が当ると包装袋2が破れることになる。その上
オカラは通常スポンジのように空洞率が多く嵩高でグニ
ャグニャと不安定であるから、最も大きな問題は95〜
100℃に加熱された重くて熱い包装袋2を取り出すと
きに火傷などの事故が生じやすいことである。更に、こ
の包装袋2を取り出して部屋の隅に積み上げると、長時
間熱を発散し続けているばかりでなく、内部が殺菌の温
度に達していないとき餡に相当する部分から腐敗が生じ
ることである。
First, as shown in FIG. 2, the okara according to the present invention is to be filled in a packaging bag 2 containing 5 kg or more like a rice bag. Then, a heavy packaging bag 2 containing Okara of 70% in moisture, 70 ° C. in temperature, 12 cm in thickness and 5 kg in weight.
Must be placed on the heating table 3 of the conventional microwave oven 1. Then, the door 4 of the microwave oven 1 is closed and heated. The Okara placed in the packing bag 2 on the heating table 3 and placed on a solid surface (if the Okara is compared to a “bun”), in a conventional microwave oven, the portion corresponding to the skin of the “bun” is usually heated first. As a result, the temperature of the portion corresponding to the bean did not progress much. When the heating was continued, the temperature of the portion corresponding to the bean did not rise so much, and the skin and the tip portion were overheated. In FIG. 1, 5 is an outer shell, and 6 is a heating chamber. When heating is completed, the door 4 must be opened and the packaging bag 2 must be taken out of the heating table 3. Since the conventional microwave oven 1 has to be carried out in such a manner that the heavy packaging bag 2 is brought into the heating table 3 and the hand is taken out for taking out, the packaging bag 2 is put in and out of the microwave oven 1. If the heavy packaging bag 2 hits somewhere in the microwave oven 1 due to losing the weight of the microwave oven 1, the packaging bag 2 will be broken. In addition, Okara usually has a high porosity like sponges, and is bulky and unstable with guñagna.
When taking out the heavy and hot packaging bag 2 heated to 100 ° C., accidents such as burns are likely to occur. Further, when the packaging bag 2 is taken out and piled up in the corner of the room, not only heat is continuously dissipated for a long time, but also the decay occurs from the portion corresponding to the bean paste when the inside does not reach the sterilization temperature. is there.

【0005】即ち従来の電子レンジは、マイクロ波を発
生するマグネトロンが加熱室の上方又は横方に装着さ
れ、主として上から下に向かって照射加熱するように設
定されているので上方と側面に加熱が偏り不均一になる
欠点がある。そこでこれを均一に加熱するために加熱室
に入るマイクロ波を攪拌したり、加熱台を回転させるな
どの手段がとられている。それでも、一般に広く利用さ
れている周波数が2450MHzのマイクロ波は、周波
数が915MHzのマイクロ波に比して被加熱品への浸
透深度が浅いために、被加熱物の上部と側面が先に加熱
され、下部が遅い欠点が有った。この欠点は被加熱物の
温度が低いほど且つ包装袋への充填度が高く、そして厚
みが厚い程顕著に現れていた。而してオカラは空洞が多
いために伝熱係数が小さい特性があり、被加熱物の中心
部にまで加熱ができなかった。
That is, in a conventional microwave oven, a magnetron for generating microwaves is mounted above or beside a heating chamber and is set so as to irradiate and heat mainly from the top to the bottom. However, there is a disadvantage that the bias becomes uneven. Therefore, in order to heat it uniformly, means such as stirring the microwave entering the heating chamber and rotating the heating table are used. Nevertheless, the generally widely used microwave of 2450 MHz has a shallower penetration depth into the article to be heated than the microwave of 915 MHz, so that the upper and side surfaces of the article to be heated are heated first. There was a drawback that the lower part was slow. This disadvantage was more pronounced as the temperature of the object to be heated was lower, the degree of filling in the packaging bag was higher, and the thickness was larger. Okara has a characteristic that the heat transfer coefficient is small due to the large number of cavities, and it is not possible to heat the central part of the object to be heated.

【0006】具体的には、従来の電子レンジに、温度が
70℃で重さが5kgのオカラを包装袋2に入れて加熱
台6に乗せ、500Wで20分間加熱すると、オカラは
包装袋2の周囲、主として上方と横が包装袋2の表層か
ら約40mmの深さまで95℃に加熱されるが、その内
部は85℃でマイクロ波が充分届いていない。そしてオ
カラの温度が低くなると更にその浸透力が低下する。即
ち温度が25℃のオカラでは同様の加熱をして表面が9
5℃になってもその内部は55℃にしかなっていなかっ
た。
More specifically, in a conventional microwave oven, Okara weighing 5 kg is placed in a packaging bag 2 at a temperature of 70 ° C., placed on a heating table 6, and heated at 500 W for 20 minutes. Is heated to 95 ° C. from the surface layer of the packaging bag 2 to a depth of about 40 mm from the surface layer of the packaging bag 2, but the inside does not reach microwave sufficiently at 85 ° C. And when the temperature of okara is lowered, its permeation power is further reduced. In other words, in the case of Okara having a temperature of 25 ° C., the same heating is performed and the surface becomes 9
Even when the temperature reached 5 ° C., the inside was only 55 ° C.

【0007】[0007]

【発明が解決しようとする課題】この発明が解決しよう
とする課題は、オカラを迅速に包装袋に充填密封してか
らこれを中心まで均一に加熱殺菌処理し、小さく軽量に
することができる電子レンジを提供することである。そ
して5〜10kgある包装袋を容易に出し入れガできる
電子レンジを提供することである。
An object to be solved by the present invention is to quickly fill and seal okara in a packaging bag, and then heat and sterilize the okara uniformly to the center to reduce the size and weight of the electronic bag. Is to provide a range. Another object of the present invention is to provide a microwave oven capable of easily taking in and out a packaging bag of 5 to 10 kg.

【0008】[0008]

【課題を解決するための手段】この発明は少なくとも加
熱室が気密に密閉される電子レンジであって、電子レン
ジの加熱台上の被加熱物を下方から直接マイクロ波で照
射加熱できるように加熱室の底板がガラス又は合成樹脂
等マイクロ波を透過する部材で構成し、前記底板の下に
設けた導波室にマイクロ波を導入することによって、被
加熱物を均一に加熱する目的を達成した。即ち包装袋に
入ったオカラをマイクロ波を主として下方から加熱する
ことで、オカラ内部に自然の熱移動を生じせしめオカラ
を中心部まで均一に加熱させる。そしてこの加熱殺菌で
高熱になったオカラが持つ高い熱エネルギーを蒸発潜熱
として利用し、包装袋中のオカラを減圧して、脱水冷却
減容する。また、重い包装袋を移動式加熱台に乗せるこ
とで手軽に加熱室に出し入れができる電子レンジを提供
する。
SUMMARY OF THE INVENTION The present invention relates to a microwave oven in which at least a heating chamber is hermetically sealed, and heats an object to be heated on a heating table of the microwave oven directly from below by microwave irradiation. The bottom plate of the chamber is made of a member that transmits microwaves such as glass or synthetic resin, and microwaves are introduced into the waveguide chamber provided below the bottom plate, thereby achieving the object of uniformly heating the object to be heated. . That is, the okara in the packaging bag is heated mainly by microwaves from below, thereby causing natural heat transfer inside the okara and uniformly heating the okara to the center. The high heat energy of the okara heated to a high temperature by this heat sterilization is used as latent heat of evaporation, and the okara in the packaging bag is decompressed to reduce the volume of dehydration and cooling. Further, there is provided a microwave oven which can easily put in and out of a heating chamber by putting a heavy packaging bag on a movable heating table.

【0009】[0009]

【発明の実施の形態】この発明によれば新鮮なままのオ
カラが包装袋に充填され、加熱殺菌、そして脱水冷却さ
れて軽く、小さくなり、保存、輸送が容易で、乾燥など
の後工程がより省力、省エネルギーで扱えるようにな
り、オカラが資源として提供される。
DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, fresh okara is filled in a packaging bag, sterilized by heat, and dehydrated and cooled to make it light and small, easy to store and transport, and to perform post-processing such as drying. Okara can be provided as a resource as it can be handled with less labor and energy.

【0010】ここで用いられる包装袋はマイクロ波を透
過し、耐熱性で非通気性の熱可塑性合成樹脂フイルムが
好ましく例えば、単層の場合、低密度ポリエチレン、ポ
リプロピレン、ポリアミド、飽和ポリエステル、その他
の樹脂があり、複層の場合はこれらに低密度ポリエチレ
ンフイルムを接着剤で張り合わせると良い。そして該包
装袋にはスリット、***又は弁機構を具えることが好ま
しい。これらは、オカラを包装袋に充填密封して電子レ
ンジで加熱されるときに膨脹する空気、水蒸気などを排
除し、また真空ボンプで加熱室を減圧吸引するとき包装
袋が破裂するのを防ぐものである。そして加熱室から取
り出した後、直ちにこのスリット、***又は弁機構を粘
着テープ等で封止する。使用されるマイクロ波は発振周
波数が2450MHz、望ましくはより透過能力に勝る
915MHzである。
The packaging bag used here is preferably a thermoplastic synthetic resin film that transmits microwaves and is heat-resistant and non-breathable. For example, in the case of a single layer, low-density polyethylene, polypropylene, polyamide, saturated polyester, other polyester There are resins, and in the case of multiple layers, it is preferable to bond a low-density polyethylene film to these with an adhesive. Preferably, the packaging bag has a slit, a small hole or a valve mechanism. These are intended to eliminate air, water vapor, etc., which expand when the okara is filled in a packaging bag and sealed and heated in a microwave oven, and also prevent the packaging bag from bursting when the heating chamber is suctioned under reduced pressure with a vacuum pump. It is. Then, immediately after being taken out of the heating chamber, the slit, the small hole or the valve mechanism is sealed with an adhesive tape or the like. The microwave used has an oscillating frequency of 2450 MHz, preferably 915 MHz, which has better transmission capability.

【0011】電子レンジ1の加熱室6は必要に応じて気
密に密閉されるようになっており加熱室6の外、好まし
くは電子レンジ1の外殻5内に設けられた図示しない減
圧装置(真空ポンプ)で減圧できる。気密扉4の方式、
また蝶番は広く公知のものが適用できる。また、ガスケ
ットは扉だけでなくフランジ側に適用してもよい。均一
に加熱するためにマイクロ波電力のコントロール、断続
印加ができる。加熱台3は、手前に倒れるように開かれ
る扉4の上にまで出し入れができる移動式加熱台を設け
たものが好ましい。この発明の移動式加熱台16は図4
に示す橇7のように滑って繰り出されるものが好まし
い。しかしながら移動式加熱台16の下には公知の車
輪、キャスターを設け移動式加熱台3が繰り出されるも
のであってもよい。尚上記ではオカラを処理するための
装置として説明したが、これに限定するものではなく、
魚のアラ、米飯、煮物、等その他の易腐敗性含水食品組
成物、或はその他の含水組成物に適用できることはいう
までもない。
The heating chamber 6 of the microwave oven 1 is hermetically sealed as required, and a decompression device (not shown) provided outside the heating chamber 6, preferably in the outer shell 5 of the microwave oven 1. (Vacuum pump). The method of the airtight door 4,
A widely known hinge can be applied. Further, the gasket may be applied not only to the door but also to the flange side. Microwave power control and intermittent application are possible for uniform heating. It is preferable that the heating table 3 is provided with a movable heating table which can be put in and out of the door 4 which is opened so as to fall forward. The movable heating table 16 of the present invention is shown in FIG.
It is preferable to use a sled 7 as shown in FIG. However, well-known wheels and casters may be provided below the movable heating table 16 so that the movable heating table 3 can be extended. In the above, an apparatus for processing okara has been described. However, the present invention is not limited to this.
It goes without saying that the present invention can be applied to other easily perishable water-containing food compositions such as fish ara, cooked rice, boiled food, and the like, or other water-containing compositions.

【0012】[0012]

【実施例】以下この発明に係る小規模の事業所に好適な
加熱殺菌減圧脱水ができる電子レンジの一実施例につい
て図面を参照して説明する。同一構成要素については同
一符号を付してその説明を省略する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a microwave oven capable of heat sterilization and reduced pressure dehydration suitable for a small-scale business establishment according to the present invention will be described below with reference to the drawings. The same components are denoted by the same reference numerals and description thereof will be omitted.

【0013】[0013]

【実施例1】図3はこの発明を説明するために、図1の
電子レンジ本体1から外殻5を取り外して示すものであ
る。この実施例では加熱室6が厚さが1mmのステンレ
ス鋼板で作られている。そして厚さ1.5mmのステン
レス鋼板製フランジ7に囲まれた開口部8がある。図上
4は扉、9は覗き窓である。この電子レンジ本体1は図
4でも示すように、加熱室6の下部が底板10によって
仕切られマイクロ波の導波室11となっている。該底板
10はマイクロ波を透過する厚さ6mmのポリプロピレ
ン樹脂板で作られ、下部の導波室11から上の加熱室に
向かってマイクロ波が照射されるようになっている。導
波室11には、底部12及びまたは底側部13に1台又
は複数台のマイクロ波を照射するマグネトロン14が直
接取り付けられるか又はマグネトロンの導波管15が設
けられている。導波室11のステンレス鋼板製底部12
からポリプロピレン樹脂(以下PPという)製底板10
までの高さは、用いるマイクロ波の遮断波長以上である
ことが好ましい。この場合、使用するマイクロ波を24
50Hzとして大略60mm以上が良い。そして導波室
11の中はマイクロ波が導波かつ反射される空間であっ
て何らの物体も物体の移動の無いことが好ましいが、必
要に応じてマイクロ波を攪拌する攪拌翼等が有っても良
い。
Embodiment 1 FIG. 3 shows the microwave oven main body 1 of FIG. 1 with the outer shell 5 removed to explain the present invention. In this embodiment, the heating chamber 6 is made of a stainless steel plate having a thickness of 1 mm. There is an opening 8 surrounded by a 1.5 mm thick stainless steel flange 7. In the figure, 4 is a door, and 9 is a viewing window. As shown in FIG. 4, the microwave oven main body 1 has a microwave waveguide chamber 11 in which a lower portion of the heating chamber 6 is partitioned by a bottom plate 10. The bottom plate 10 is made of a 6 mm thick polypropylene resin plate that transmits microwaves, and the microwaves are irradiated from the lower waveguide chamber 11 to the upper heating chamber. In the waveguide chamber 11, one or a plurality of magnetrons 14 for irradiating one or a plurality of microwaves to the bottom part 12 and / or the bottom side part 13 are directly attached, or a magnetron waveguide 15 is provided. Stainless steel bottom 12 of waveguide chamber 11
From polypropylene resin (hereinafter referred to as PP) bottom plate 10
Is preferably not less than the cut-off wavelength of the microwave used. In this case, the microwave used is 24
The frequency of 50 Hz is preferably about 60 mm or more. The waveguide chamber 11 is a space in which microwaves are guided and reflected, and it is preferable that no objects move. However, if necessary, a stirring blade or the like for stirring the microwaves is provided. May be.

【0014】底板10の上には必要に応じて、移動式加
熱台16がある。該移動式加熱台16もマイクロ波を透
過する厚さ4mmのPP板で作られ、そして底板10と
接触する部分は橇17となつて扉4の上にまで移動でき
るようになっている。この橇17’もマイクロ波を透過
するPPで作られ、その底板10と接触する部分が厚さ
1mmのフッ素樹脂テープ18でカバーされている。移
動式加熱台16は図5に示すように、必要に応じて金属
製のマスク19が設けられる。該マスク19はオカラが
入った包装袋2の少なくとも一部を囲んで設けられ、包
装袋2の一番薄くなった端縁20にマイクロ波の電界が
集中して局部加熱にならないように電界の陰を作ると共
に、上方に向かうマイクロ波の一部を遮断することによ
ってマイクロ波を導波室11に戻し、移動式加熱台16
の底部から優先的に加熱されるようになっている。尚、
同じ目的で包装袋2を移動式加熱台16の上にベタ置き
したときその端縁20が加熱室6の側壁に接する大きさ
になるようにしてもよい。扉4は電子レンジ本体1の手
前に倒れるように開かれる。図4に示す破線は移動式加
熱台16’で、移動式加熱台16が前記扉4の上でにま
で移動して繰り出してきたものを示している。扉4の内
面はその高さが底板10の表面と同一または近似のレベ
ルであることが好ましい。そして該扉4の上にはリミッ
ト板21があって、前記移動式加熱台16’の移動を制
限して移動式加熱台16’が扉4の上から落ちないよう
にしている。この移動式加熱台16には橇17の代りに
下部に車輪、キャスター等が設けられてもよい。オカラ
が入った包装袋2を、開かれた扉4の上に引き出された
移動式加熱台16’に乗せて移動し、電子レンジ本体1
の加熱室6中に容易に収納することができる。そして扉
4を閉じ、電子レンジを作動せしめてオカラが入った包
装袋2を下方からマイクロ波で加熱する。このオカラが
入った包装袋2は側面がマスク18で電界の陰となって
端縁20に熱が集中するのを防止するばかりでなく、マ
スク19がマイクロ波の反射を制限するのでオカラが上
方から照射加熱されるエネルギーの量が減少する。而し
てオカラが入った包装袋2はコンロで焙られるように主
として下方から加熱される。そして包装袋2の厚さが最
も厚くなった部分も内部まで、できれば細菌の死滅温度
(75℃)以上、この場合100℃に均一に加熱され
る。このとき包装袋2の中で発生した水蒸気、膨脹した
空気は図2に示す包装袋2のシーム部22の一部未着部
23から、又は包装袋2のスリット、***、又は弁機構
24から包装袋2の外に排出される。
A movable heating table 16 is provided on the bottom plate 10 as required. The movable heating table 16 is also made of a 4 mm-thick PP plate that transmits microwaves, and the portion that comes into contact with the bottom plate 10 becomes a sled 17 so that it can be moved onto the door 4. This sled 17 ′ is also made of PP that transmits microwaves, and the portion that comes into contact with the bottom plate 10 is covered with a fluororesin tape 18 having a thickness of 1 mm. As shown in FIG. 5, the movable heating table 16 is provided with a metal mask 19 as necessary. The mask 19 is provided so as to surround at least a part of the packaging bag 2 containing the okara, and the electric field of the microwave is concentrated on the thinnest edge 20 of the packaging bag 2 so as not to cause local heating. The microwave is returned to the waveguide chamber 11 by creating a shade and blocking a part of the microwave going upward, and the movable heating table 16
Is preferentially heated from the bottom. still,
For the same purpose, when the packaging bag 2 is solidly placed on the movable heating table 16, the edge 20 may be sized to be in contact with the side wall of the heating chamber 6. The door 4 is opened so as to fall in front of the microwave oven main body 1. The dashed line shown in FIG. 4 indicates a movable heating table 16 ′, which has been moved out of the door 4 and extended out. It is preferable that the height of the inner surface of the door 4 is the same or similar to the surface of the bottom plate 10. A limit plate 21 is provided on the door 4 to limit the movement of the movable heating table 16 ′ so that the movable heating table 16 ′ does not fall from the door 4. The movable heating table 16 may be provided with wheels, casters, and the like at the lower part instead of the sled 17. The packaging bag 2 containing the okara is moved by being placed on a movable heating table 16 ′ pulled out on the opened door 4, and the microwave oven body 1 is moved.
Can be easily stored in the heating chamber 6. Then, the door 4 is closed, the microwave oven is operated, and the packaging bag 2 containing the okara is heated by microwaves from below. The packaging bag 2 containing the okara not only prevents the heat from being concentrated on the edge 20 due to the shadow of the electric field on the side surface of the mask 18, but also causes the mask 19 to limit the reflection of microwaves, so that the okara is upward. The amount of energy to be radiated and heated from is reduced. The packaging bag 2 containing the okara is mainly heated from below so as to be roasted on the stove. The portion where the thickness of the packaging bag 2 is the thickest is also uniformly heated to the inside, preferably to the temperature at which bacteria are killed (75 ° C.), in this case, 100 ° C. At this time, the water vapor generated in the packaging bag 2 and the inflated air are supplied from a part 23 of the seam portion 22 of the packaging bag 2 shown in FIG. It is discharged out of the packaging bag 2.

【0015】所定の処理が終わると扉4を開けることで
電源を切り、移動式加熱台16’を扉4の上に引き出し
て包装袋2を取り出す。このときの包装袋2の表面温度
は最大95〜100℃にまで上昇しており素手では火傷
する程危険な状態になっている。更に、この包装袋2を
取り出して部屋の隅に積み上げると、長時間熱を発散し
続けている。
When the predetermined processing is completed, the power is turned off by opening the door 4 and the movable heating table 16 'is pulled out onto the door 4 to take out the packaging bag 2. At this time, the surface temperature of the packaging bag 2 has risen to a maximum of 95 to 100 ° C., and the bare hand is in such a dangerous state that it is burned. Further, when the packaging bag 2 is taken out and piled up in the corner of the room, heat is continuously radiated for a long time.

【0016】[0016]

【実施例2】この実施例は、図6に示すように移動式加
熱台16の上に△形のサドル25を設け、その上に包装
袋2を乗せるようにしたことを特徴とするものである。
実施例1で移動式加熱台16に上にベタ置きにした包装
袋2の形状は通常長方形のため、平面上で必要とする形
状、面積も当然同じである。これを縦方向に扉4の上に
引き出した際、該扉4の手前に荷重が掛かって甚だバラ
ンスが悪く、これを安定にするために、電子レンジの奥
行き寸法を横幅よりも大きくなものが必要である不便が
あった。この実施例では、長方形の包装袋2の真ん中部
分を、前記△形のサドル25の頂上に覆せることによっ
て、真ん中が高く持ち上がり平面的には略正方形になっ
て実際の設置面積が小さくなる。そして△形のサドル2
5によって持ち上がった包装袋2の真ん中に向かって斜
面を構成する胴部が煙突の作用をなして下方から照射加
熱されるエネルギーを上方に移動させ包装袋2の中を均
一に加熱する。このとき蒸気等の排出口である弁機構2
4は包装袋2の真ん中がよい。そして弁機構24の内側
にはオカラ等の微粉が弁機構24に着かないようにフイ
ルターを設けることが好ましい。
Embodiment 2 This embodiment is characterized in that a △ -shaped saddle 25 is provided on a movable heating table 16 as shown in FIG. 6, and the packaging bag 2 is placed thereon. is there.
In the first embodiment, the shape of the packaging bag 2 which is solidly placed on the movable heating table 16 is usually rectangular, so that the shape and area required on a plane are naturally the same. When this is pulled out on the door 4 in the vertical direction, a load is applied in front of the door 4 and the balance is extremely poor, and in order to stabilize this, a microwave oven having a depth dimension larger than the width is required. There were inconveniences needed. In this embodiment, the middle part of the rectangular packaging bag 2 can be covered on the top of the △ -shaped saddle 25, so that the middle part is raised and becomes substantially square in plan view, thereby reducing the actual installation area. And the saddle 2
The body forming a slope toward the middle of the packaging bag 2 lifted up by 5 acts as a chimney to move the energy irradiated and heated upward from below to uniformly heat the inside of the packaging bag 2. At this time, the valve mechanism 2 which is a discharge port for steam or the like
4 is preferably in the middle of the packaging bag 2. It is preferable to provide a filter inside the valve mechanism 24 so that fine powder such as okara does not reach the valve mechanism 24.

【0016】[0016]

【実施例3】この実施例は上記電子レンジ1に更に脱水
冷却装置を組み込んだことを特徴とするものである。図
2の排気口30は加熱室6の外に設けられた減圧装置即
ち真空ポンプ(図示しない)に接続されている。この場
合の電子レンジ本体1は少なくとも加熱室6が気密に密
閉される構造となっている。即ち扉4の周辺には図3に
示すガスケット26を設けて真空容器として使用できる
ものとする。そして実施例1と同様に70℃70%のオ
カラを充満させた包装袋2を移動式加熱台16’に乗せ
て加熱室6内に入れ、扉4を閉じることで電子レンジを
稼動し、移動式加熱台16の下方からマイクロ波で加熱
する。このとき包装袋2の中で発生した水蒸気、膨脹し
た空気は図2の未着部23、図5、図6のスリット、小
穴、又は弁機構24から包装袋2の外に排出される。包
装袋2の全体を所定時間所定の温度に加熱保持してか
ら、排気口30より加熱室6の外に設けられた図示しな
い減圧装置(真空ポンプ)で加熱室6の中を減圧する。
加熱室6の中を減圧することによって該包装袋2の中の
オカラを脱水すると同時に冷却するものである。
Embodiment 3 This embodiment is characterized in that the microwave oven 1 is further provided with a dehydration cooling device. The exhaust port 30 in FIG. 2 is connected to a pressure reducing device, that is, a vacuum pump (not shown) provided outside the heating chamber 6. In this case, the microwave oven main body 1 has a structure in which at least the heating chamber 6 is hermetically sealed. That is, the gasket 26 shown in FIG. 3 is provided around the door 4 and can be used as a vacuum container. Then, as in the first embodiment, the packaging bag 2 filled with okara at 70 ° C. and 70% is placed in the heating chamber 6 by placing it on the movable heating table 16 ′, and the microwave oven is operated by closing the door 4 and moving. Microwave heating is performed from below the heating table 16. At this time, the water vapor generated in the packaging bag 2 and the inflated air are discharged out of the packaging bag 2 from the unattached portion 23 in FIG. 2, the slits, small holes, or the valve mechanism 24 in FIGS. After the entire packaging bag 2 is heated and maintained at a predetermined temperature for a predetermined time, the inside of the heating chamber 6 is depressurized through an exhaust port 30 by a pressure reducing device (vacuum pump) (not shown) provided outside the heating chamber 6.
By reducing the pressure in the heating chamber 6, the okara in the packaging bag 2 is dehydrated and cooled at the same time.

【0017】一例として、95℃のオカラを30℃にま
で減圧脱水すると、水の蒸発潜熱が540cal/g
であるから 10kgのオカラを処理したとして、理論
的には(95−30)×10kg/540≒1kg と
なり30℃の安全な温度にまで冷却されると同時に1k
g(約10%)もの水が脱水される。この減圧脱水はマ
グネトロンからマイクロ波が供給される間継続される。
そして更に(100〜300g)の水が脱水される。
尚、30℃に適当な減圧装置の真空度は 31.82
(Torr)である。所定の処理が終わると扉4を開け
ることで電源を切り、移動式加熱台16’を扉4の上に
繰り出して包装袋2を取り出す。そしてシーム部22の
未着部23を熱封止することで、或は弁機構24にテー
プを貼ることで包装袋2を完全に密封し所謂真空パック
とする。
As an example, when okara at 95 ° C. is dehydrated under reduced pressure to 30 ° C., the latent heat of evaporation of water is 540 cal / g.
Therefore, assuming that 10 kg of okara is treated, theoretically, it becomes (95-30) × 10 kg / 540kg1 kg, and is cooled down to a safe temperature of 30 ° C. and at the same time, 1 k
As much as g (about 10%) of water is dehydrated. This dehydration under reduced pressure is continued while the microwave is supplied from the magnetron.
And further (100-300 g) of water is dehydrated.
In addition, the degree of vacuum of a suitable pressure reducing device at 30 ° C. is 31.82.
(Torr). When the predetermined processing is completed, the power is turned off by opening the door 4 and the movable heating table 16 ′ is fed out onto the door 4 to take out the packaging bag 2. Then, the packaging bag 2 is completely sealed by heat sealing the unattached portion 23 of the seam portion 22 or by applying tape to the valve mechanism 24 to form a so-called vacuum pack.

【0018】[0018]

【実施例4】この実施例は被加熱物を充填した包装袋2
の底部に小量の水が添加されることを特徴とするもので
ある。この実施例における易腐敗性含水食品組成物とし
ては、食パンのみみ、返品されたパン等を対象とする。
包装袋2に食パンのみみ、返品されたパン等を充填して
密閉する。これらは空洞が多いばかりでなく、甚だ嵩高
い上に昇温に必要な水分が少ないので小量の水を添加し
てから加熱台3に乗せ電子レンジ1の中に入れ、そして
扉4を閉じて加熱する。すると包装袋2の底にある水が
下方から照射されるマイクロ波によって先ず蒸発して高
温の飽和水蒸気となり、拡散して包装袋2の食パンのみ
みを加熱する。そして全体をカビの胞子が死ぬ温度60
℃以上に所定時間保持(この場合75℃で2分間)す
る。しかる後、更にマイクロ波を照射しながら又はしな
いで、加熱室6を減圧し脱水すると共に包装袋2の中の
空気を吸引する。そして所定の圧力にまで減圧されてか
ら扉4を開け包装袋2の弁機構24に粘着テープを貼っ
てこれを完全に封止する。この発明の電子レンジで処理
された食パンのみみを入れた包装袋2は、殺菌、脱水、
密封、真空パックされてその容積を2/3〜1/2に減
少し30℃で30日間保存してもカビの発生が無かっ
た。
Embodiment 4 This embodiment is directed to a packaging bag 2 filled with an object to be heated.
Is characterized in that a small amount of water is added to the bottom. The easily perishable water-containing food composition in this example is intended only for bread, returned bread, and the like.
The packaging bag 2 is filled with returned bread and the like, and sealed. These have not only many cavities, but also are extremely bulky and have a small amount of water necessary for raising the temperature. Therefore, a small amount of water is added, and then placed on the heating table 3 and placed in the microwave oven 1, and the door 4 is closed. And heat. Then, the water at the bottom of the packaging bag 2 is first evaporated by microwaves irradiated from below to become high-temperature saturated steam, diffused, and heats the bread only in the packaging bag 2. And the temperature at which mold spores die is 60
It is kept at a temperature of at least 70 ° C. for a predetermined time (in this case, 75 ° C. for 2 minutes). Thereafter, the heating chamber 6 is decompressed and dehydrated with or without further microwave irradiation, and the air in the packaging bag 2 is sucked. Then, after the pressure is reduced to a predetermined pressure, the door 4 is opened, and an adhesive tape is applied to the valve mechanism 24 of the packaging bag 2 to completely seal it. The packaging bag 2 containing only the bread treated by the microwave oven of the present invention is sterilized, dehydrated,
It was sealed and vacuum-packed to reduce its volume to パ ッ ク to し, and there was no generation of mold even when stored at 30 ° C. for 30 days.

【0019】尚上記では易腐敗性含水食品組成物として
オカラと食パンのみみ等を例示したがこれに限定しない
ことは言うまでも無い。また減圧も、対象とする被加熱
物によって自由に設定されることは当然である。マイク
ロ波の照射も加熱台の下方からだけに限定せず加熱室の
上、横からの照射など併用してもよい。この発明の移動
式加熱台は図4に示す橇17のように滑って繰り出され
るものが好ましい。しかしながら、移動式加熱台16の
下には公知の車輪、キャスター等を設け移動式加熱台が
繰り出されるものであってもよい。
In the above description, as examples of the perishable water-containing food composition, okara and bread only are exemplified, but it goes without saying that the present invention is not limited thereto. Naturally, the pressure reduction can be freely set depending on the target object to be heated. Irradiation with microwaves is not limited to be performed from below the heating table, and may be performed in combination with irradiation from above or beside the heating chamber. It is preferable that the movable heating table of the present invention be slid out like a sled 17 shown in FIG. However, well-known wheels, casters, and the like may be provided below the movable heating table 16 so that the movable heating table can be extended.

【0020】[0020]

【発明の効果】この発明によると、以下に列挙する種々
の効果が得られる。
According to the present invention, the following various effects can be obtained.

【0021】(1)主として下方から加熱するので厚い
包装袋でも中心部まで加熱できる。 (2)マイクロ波で加熱されているから殺菌効果は充分
である。 (3)新鮮な間に処理をするので異臭を生じず、又必要
に応じて脱臭装置がつけられる。 (4)加熱台を回転させないので加熱室にほぼ一杯の包
装袋の被加熱品をベタ置きで入れることができ同じ処理
容量でも40%は小さな電子レンジで済む。 (5)電子レンジの加熱室の壁一杯に包装袋を入れるこ
とで包装袋の端縁に電界の陰ができ、前記端縁に過熱を
生じないようにコントロールできる。 (6)マスクによって小さな包装袋でも(4)と同様の
効果が得られる。 (7)加熱台の構造が簡単でコスト安になる。 (8)橇または車輪が付いた簡単な加熱台が移動台とし
て利用でき省力になる。 (9)冷却、脱水されて取り出されるから火傷をしない
で、軽く小さくなる。 (10)包装袋の底の水が先ず蒸発し、中心部の加熱が
容易となる。 (11)△形のサドルによって加熱室が立体的に利用で
き小さな平面でよいから、電子レンジが小さくなる。 (12)包装袋の最下部にある水が有効に加熱される。
(1) Since the heating is performed mainly from below, even a thick packaging bag can be heated to the center. (2) Since it is heated by microwaves, the sterilizing effect is sufficient. (3) Since the treatment is carried out while fresh, no off-flavor is generated, and a deodorizing device is provided if necessary. (4) Since the heating table is not rotated, the heating chamber can be almost completely filled with articles to be heated in a packaging bag, and a 40% small microwave oven can be used with the same processing capacity. (5) By placing the packaging bag on the entire wall of the heating chamber of the microwave oven, an electric field is shaded at the edge of the packaging bag, and the edge can be controlled so as not to overheat. (6) The same effect as (4) can be obtained even with a small packaging bag by the mask. (7) The structure of the heating table is simple and the cost is low. (8) A simple heating table with sleds or wheels can be used as a moving table, saving labor. (9) Since it is taken out after being cooled and dehydrated, it is lightly reduced without burning. (10) Water at the bottom of the packaging bag evaporates first, and heating of the central portion becomes easy. (11) The heating chamber can be three-dimensionally used with a △ -shaped saddle, and a small flat surface is sufficient, so that the microwave oven becomes small. (12) The water at the bottom of the packaging bag is effectively heated.

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

【図1】図1は従来の電子レンジの一例を示す斜視図で
ある。
FIG. 1 is a perspective view showing an example of a conventional microwave oven.

【図2】図2は包装袋の一例を示す斜視図である。FIG. 2 is a perspective view showing an example of a packaging bag.

【図3】図3は本発明の一実施例を示す斜視図である。FIG. 3 is a perspective view showing one embodiment of the present invention.

【図4】図4は図3のa−a線縦断側面図である。FIG. 4 is a vertical sectional side view taken along line aa of FIG. 3;

【図5】図5はオカラが入った包装袋を移動式加熱台に
乗せた態様を示す斜視図である。
FIG. 5 is a perspective view showing a mode in which a packaging bag containing okara is placed on a movable heating table.

【図6】図6は移動式加熱台に△形のサドルを設け、そ
の上にオカラが入った包装袋を乗せた態様を示す斜視図
である。
FIG. 6 is a perspective view showing a mode in which a 加熱 -shaped saddle is provided on a movable heating table, and a packaging bag containing okara is placed thereon.

【符号の説明】[Explanation of symbols]

1 電子レンジ本体 2 包装袋 3 加熱台 4 扉 5 外殻 6 加熱室 7 フランジ 8 開口部 9 覗き窓 10 底板 11 導波室 12 底部 13 底側部 14 マグネトロン 15 導波管 16 移動式加熱台 16’引き出された移動式加
熱台 17 橇 17’引き出された橇 18 フッ素樹脂テープ 19 マスク 20 端縁 21 リミット板 22 シーム部 23 未着部 24 弁機構 25 △形のサドル 26 ガスケット 30 排気口
DESCRIPTION OF SYMBOLS 1 Microwave oven main body 2 Packaging bag 3 Heating stand 4 Door 5 Outer shell 6 Heating chamber 7 Flange 8 Opening 9 Viewing window 10 Bottom plate 11 Waveguide chamber 12 Bottom 13 Bottom side 14 Magnetron 15 Waveguide 16 Mobile heating stand 16 'The drawn-out movable heating table 17 sled 17' The drawn-out sled 18 Fluororesin tape 19 Mask 20 Edge 21 Limit plate 22 Seam portion 23 Unattached portion 24 Valve mechanism 25 △ -shaped saddle 26 Gasket 30 Exhaust port

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】加熱室の底板がガラス、合成樹脂等のマイ
クロ波を透過する部材で構成されている電子レンジであ
って、該底板の下に設けた導波室にマイクロ波を導入す
るようになしたことを特徴とする電子レンジ。
1. A microwave oven in which a bottom plate of a heating chamber is formed of a member that transmits microwaves such as glass and synthetic resin, and the microwaves are introduced into a waveguide chamber provided below the bottom plate. A microwave oven characterized by the following.
【請求項2】前記加熱室の底板の下に設けた導波室から
照射されるマイクロ波が、底板又は加熱台上に設けられ
たマスクによって加熱室上部に回るマイクロ波の量が制
限且つコントロールされる請求項1に記載の電子レンジ
の加熱方法。
2. A microwave radiated from a waveguide chamber provided below a bottom plate of the heating chamber, and the amount of the microwaves transmitted to an upper portion of the heating chamber is limited and controlled by a mask provided on the bottom plate or the heating table. The method for heating a microwave oven according to claim 1, wherein the heating is performed.
【請求項3】前記底板の上に設けた加熱台と、前記マイ
クロ波を導入する導波室の底部までの距離が、少なくと
も遮断波長、即ちマイクロ波の伝波を妨げない距離以上
である請求項1に記載の電子レンジ
3. The distance between the heating table provided on the bottom plate and the bottom of the waveguide chamber for introducing the microwave is at least a cut-off wavelength, that is, a distance that does not hinder microwave transmission. Item 2. The microwave oven according to item 1.
【請求項4】少なくとも前記加熱室が気密に密閉される
電子レンジであって、加熱室外の減圧装置によって、前
記加熱室内を減圧排気することを特徴とする請求項1及
び3に記載の電子レンジ。
4. The microwave oven according to claim 1, wherein at least the heating chamber is hermetically sealed, and the heating chamber is evacuated and evacuated by a decompression device outside the heating chamber. .
【請求項5】前記加熱室の底板の上から扉の上に移動式
加熱台が出入りできるようになした請求項1.3.4の
いずれかに記載の電子レンジ。
5. The microwave oven according to claim 1.3.4, wherein a movable heating table can be moved in and out of a door from above a bottom plate of the heating chamber.
【請求項6】包装袋の底部に水を添加した請求項1〜5
のいずれかに記載の電子レンジの加熱方法
6. The method according to claim 1, wherein water is added to the bottom of the packaging bag.
The method for heating a microwave oven according to any one of the above.
JP32940597A 1997-10-22 1997-10-22 Electronic oven and its heating method Pending JPH11125429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32940597A JPH11125429A (en) 1997-10-22 1997-10-22 Electronic oven and its heating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32940597A JPH11125429A (en) 1997-10-22 1997-10-22 Electronic oven and its heating method

Publications (1)

Publication Number Publication Date
JPH11125429A true JPH11125429A (en) 1999-05-11

Family

ID=18221063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32940597A Pending JPH11125429A (en) 1997-10-22 1997-10-22 Electronic oven and its heating method

Country Status (1)

Country Link
JP (1) JPH11125429A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104824128A (en) * 2015-04-13 2015-08-12 李秋红 Control circuit of miniature vegetable dehydrator
JP2022516296A (en) * 2019-01-04 2022-02-25 海尓智家股▲フン▼有限公司 Heating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104824128A (en) * 2015-04-13 2015-08-12 李秋红 Control circuit of miniature vegetable dehydrator
CN104824128B (en) * 2015-04-13 2022-08-12 李秋红 Control circuit of miniature vegetable dehydrator
JP2022516296A (en) * 2019-01-04 2022-02-25 海尓智家股▲フン▼有限公司 Heating device

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