JP2007325522A - Method and device for sterilizing oil - Google Patents

Method and device for sterilizing oil Download PDF

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JP2007325522A
JP2007325522A JP2006158268A JP2006158268A JP2007325522A JP 2007325522 A JP2007325522 A JP 2007325522A JP 2006158268 A JP2006158268 A JP 2006158268A JP 2006158268 A JP2006158268 A JP 2006158268A JP 2007325522 A JP2007325522 A JP 2007325522A
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oil
cooling
water
steam
heating
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JP4739123B2 (en
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Kashio Okada
甲子男 岡田
Noriko Furumiya
徳子 古宮
Naohiro Kuroda
直宏 黒田
Koichi Kushioka
宏一 串岡
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Dai Nippon Printing Co Ltd
Ariake Japan Co Ltd
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Dai Nippon Printing Co Ltd
Ariake Japan Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a device for sterilizing oil such as edible oil, wherein oil can be efficiently sterilized. <P>SOLUTION: The method for sterilizing oil comprises pouring steam or boiling water to oil while flowing the oil in a pressurized condition so as to directly heat the oil, and then cooling the oil. The method enables proper and efficient sterilization of the oil. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、食用油等の油を殺菌する方法及び装置に関する。   The present invention relates to a method and apparatus for sterilizing oil such as edible oil.

一般に、食品には黴、酵母、細菌等の微生物が付着、混入し、水分が多い場合には腐敗を引き起こすので、食品はあらかじめ殺菌処理したうえで保存され、流通過程におかれる。   In general, microorganisms such as koji, yeast, and bacteria adhere to and mix with food, and when there is a lot of water, it causes spoilage. Therefore, food is stored after being sterilized in advance and placed in the distribution process.

たとえば、食用油脂、水等の混合食品であるホイップクリーム組成物も殺菌処理したうえで保存、搬送等される。ところが、ホイップクリーム組成物を超高温瞬間滅菌処理（ＵＨＴ）しようとすると超高温のため増粘し、固化するので、これを防止するため高温短時間殺菌処理（ＨＴＳＴ）している。そのため微生物が残存し、長期間の保存が困難となっている（例えば、特許文献１参照。）。   For example, a whipped cream composition, which is a mixed food such as edible fats and oils, is also stored and transported after being sterilized. However, when trying to sterilize the whipped cream composition at ultra high temperature (UHT), the whipped cream composition is thickened due to the ultra high temperature and solidifies. Therefore, high temperature short time sterilization (HTST) is performed to prevent this. Therefore, microorganisms remain and long-term storage is difficult (see, for example, Patent Document 1).

一方、サラダドレッシング等のような酸を含む食品は、油、水等を含んでいてもｐＨを低く抑えたり、冷暗所に保存したりすることで微生物の繁殖を抑制し、格別殺菌処理をしなくとも長期間の保存が可能である。   On the other hand, foods containing acids such as salad dressing can suppress the growth of microorganisms by keeping the pH low or storing it in a cool and dark place even if it contains oil, water, etc. Both can be stored for a long time.

特公平７−１０８２０１号公報Japanese Examined Patent Publication No. 7-108201

近年、例えばラーメンのスープ等のごとく油にだし汁等の水物を混入してなるほぼ中性の油水混合液をパウチ等で包装して保存し、使用し、或いは流通させたいとの要望がある。本発明者は当初、市販の食用油を購入し、この油に殺菌処理した水物を加えて保存しようとしたが、菌が繁殖し長期間の保存は困難であった。本発明者はこの点について検討したところ、食用油自体は菌が存在しても水分が含まれていない場合は腐敗することがなく、殺菌処理しなくとも長期保存が可能であること、また、開封したばかりの油に水物を殺菌処理したうえで注入した場合、一見して腐敗しないようであるが、油中に菌が存在する場合があり、この菌が水物の存在により繁殖し、油水混合液が腐敗してしまう場合があることが明らかとなった。そこで、本発明者は水物と油を別々に加熱殺菌処理したうえで混合するようにしたところ、長期保存が可能であった。   In recent years, there has been a demand for packaging, storing, using, or distributing almost neutral oil / water mixtures in which oil is mixed with water such as soup in ramen soup such as ramen soup. . The present inventor initially purchased a commercially available edible oil and tried to preserve it by adding a sterilized water to the oil, but it was difficult to preserve for a long period of time due to the growth of bacteria. The present inventor examined this point, the edible oil itself does not rot if it does not contain moisture even if bacteria are present, it can be stored for a long time without sterilization, When it is injected after sterilizing the water in the freshly opened oil, it does not seem to spoil at first glance, but there may be bacteria in the oil, and these bacteria will propagate due to the presence of water, It became clear that the oil / water mixture may rot. Then, when this inventor mixed the water and oil after heat-sterilizing separately, long-term preservation | save was possible.

本発明はこのような知見に基づいてなされたもので、従来行われていなかった油の殺菌を効率よく行うことができる方法及び装置を提供することを目的とする。   The present invention has been made based on such knowledge, and an object thereof is to provide a method and an apparatus capable of efficiently performing sterilization of oil which has not been conventionally performed.

上記課題を解決するため、本発明は次のような構成を採用する。   In order to solve the above problems, the present invention employs the following configuration.

すなわち、請求項１に係る発明は、油を加圧状態で流しながら、蒸気又は熱水を注入して直接加熱し、しかる後に油を冷却することを特徴とする。   That is, the invention according to claim 1 is characterized in that steam or hot water is injected and heated directly while flowing the oil in a pressurized state, and then the oil is cooled.

油としては、例えば大豆油、綿実油、菜種油、コーン油、米糠油、サフラワー油、ヒマワリ種子油、ヤシ油、トウモロコシ油、カカオ脂、落花生油、オリーブ油、ごま油、カポック油、月見草油、シア脂、サル脂、椰子油、パーム核油等の植物性油脂、或いは乳脂肪、牛脂、ラード、魚油、鯨油等の動物性油脂等を殺菌対象とすることができる。油の直接加熱時の温度は、好ましくは１２０°Ｃ〜１６０°Ｃより好ましくは１３５°Ｃ〜１５０°Ｃである。また、冷却時の油の温度は、好ましくは室温〜６０°Ｃ、より好ましくは３０°Ｃ〜５０°Ｃである。   Examples of the oil include soybean oil, cottonseed oil, rapeseed oil, corn oil, rice bran oil, safflower oil, sunflower seed oil, coconut oil, corn oil, cocoa butter, peanut oil, olive oil, sesame oil, kapok oil, evening primrose oil, and shea fat Vegetable oils such as monkey fat, coconut oil and palm kernel oil, or animal fats such as milk fat, beef tallow, lard, fish oil, whale oil and the like can be targeted for sterilization. The temperature during direct heating of the oil is preferably 120 ° C to 160 ° C, more preferably 135 ° C to 150 ° C. The temperature of the oil during cooling is preferably room temperature to 60 ° C, more preferably 30 ° C to 50 ° C.

この請求項１に記載の油の殺菌方法において、直接加熱の前に間接加熱することで直接加熱の殺菌効果を高めることができる。   In the oil sterilization method according to claim 1, the direct heating sterilization effect can be enhanced by indirect heating before direct heating.

また、請求項１に記載の油の殺菌方法において、油の冷却後に油をタンク内に貯留し、直接加熱により混入した水を除去するようにしてもよいし、油の冷却を真空冷却により行うことで、直接加熱により混入した水を除去するようにしてもよい。   Further, in the oil sterilization method according to claim 1, the oil may be stored in the tank after the oil has been cooled, and water mixed in by direct heating may be removed, or the oil may be cooled by vacuum cooling. Thus, water mixed by direct heating may be removed.

上記油の殺菌方法は、油に蒸気又は熱水を注入して直接加熱する直接加熱手段（５）と、直接加熱された油を冷却する冷却手段（６）とが、油を加圧状態で流す油の流路（１）に設けられたことを特徴とする油の殺菌装置により実施可能である。   In the oil sterilization method, the direct heating means (5) for directly heating the oil by injecting steam or hot water, and the cooling means (6) for cooling the directly heated oil include the oil in a pressurized state. It can be implemented by an oil sterilizer characterized by being provided in the flow path (1) of the flowing oil.

この殺菌装置において、直接加熱手段（５）よりも上流側に間接加熱手段（４）を設けてもよいし、冷却手段（６）よりも下流側に油の貯留タンク（９）を設け、このタンク（９）に直接加熱により混入した水を排出する排出手段（３４）を設けてもよいし、冷却手段を真空冷却機（４５）として油から水抜きを行ってもよい。   In this sterilizer, the indirect heating means (4) may be provided upstream of the direct heating means (5), or the oil storage tank (9) is provided downstream of the cooling means (6). The tank (9) may be provided with a discharge means (34) for discharging water mixed by direct heating, or the cooling means may be a vacuum cooler (45) to drain water from the oil.

本発明によれば、油を加圧状態で流しながら、蒸気又は熱水を注入して直接加熱し、しかる後に油を冷却することから、食用油等の油を適正に滅菌処理することができ、従って水が混入しても腐敗することのない油を製造することができる。   According to the present invention, while flowing oil under pressure, steam or hot water is injected and heated directly, and then the oil is cooled, so that oil such as edible oil can be appropriately sterilized. Therefore, it is possible to produce an oil that does not rot even when mixed with water.

次に、本発明の実施の形態について図面を参照して説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

＜実施の形態１＞
この油の殺菌方法は、例えば植物から抽出した油を殺菌しようというもので、図１に示すような殺菌装置により、油を加圧状態で流しながら、一次加熱（Ｉ）、二次加熱（ＩＩ）、一次冷却（ＩＩＩ）、二次冷却（ＩＶ）、水抜き（Ｖ）、包装（ＶＩ）の各工程を順次行うようになっている。 <Embodiment 1>
This oil sterilization method is, for example, to sterilize oil extracted from a plant, and primary heat (I), secondary heat (II) while flowing oil in a pressurized state by a sterilizer as shown in FIG. ), Primary cooling (III), secondary cooling (IV), draining (V), and packaging (VI) are sequentially performed.

この殺菌装置は、油を一方向に流す流路１を備え、また、この流路１上に上流側から下流側に向かって、コンテナタンク２、ポンプ３、一次加熱（Ｉ）のための一次加熱器４、二次加熱（ＩＩ）のための二次加熱器５、一次冷却（ＩＩＩ）のための一次冷却器６、二次冷却（ＩＶ）のための二次冷却器７、制御弁８、水抜き（Ｖ）等のためのサージタンク９、ポンプ３５、包装（ＶＩ）のための充填機１１を順に備えている。   This sterilizer is provided with a flow path 1 for flowing oil in one direction, and on this flow path 1 from the upstream side toward the downstream side, the container tank 2, the pump 3, and the primary for primary heating (I). Heater 4, secondary heater 5 for secondary heating (II), primary cooler 6 for primary cooling (III), secondary cooler 7 for secondary cooling (IV), control valve 8 , A surge tank 9 for draining (V) and the like, a pump 35, and a filling machine 11 for packaging (VI).

コンテナタンク２は殺菌前の油を貯留する。このコンテナタンク２内の油は、ポンプ３によって流路１に送り出される。流路１の下流側では制御弁８が流路１の開度を絞ることにより、油はポンプ３と制御弁８との間を大気圧以上に加圧されつつ流れる。   The container tank 2 stores oil before sterilization. The oil in the container tank 2 is sent out to the flow path 1 by the pump 3. On the downstream side of the flow path 1, the control valve 8 throttles the opening of the flow path 1, so that the oil flows between the pump 3 and the control valve 8 while being pressurized to atmospheric pressure or higher.

一次加熱（Ｉ）のための一次加熱器４は、室温の油を加熱することで油温を４０°Ｃ〜８０°Ｃまで高める。加熱時間は例えば約４５秒である。   The primary heater 4 for primary heating (I) raises oil temperature to 40 to 80 degreeC by heating the oil of room temperature. The heating time is about 45 seconds, for example.

一次加熱器４は、図２に示すように、密封された釜１２を有する。釜１２内は油の流路１３と蒸気の流路１４とがパイプ等によって網目状に張り巡らされ、両流路１３，１４間はパイプ等の壁で遮断される。また、釜１２には釜１２内の油の流路１３及び蒸気の流路１４に対する入口１３ａ，１４ａと出口１３ｂ，１４ｂがそれぞれ設けられる。両流路１３，１４を油と蒸気がそれぞれ流れることにより、蒸気の熱がパイプ等の壁を介して油に伝わり油を加熱し殺菌する。この一次加熱器４による殺菌は油と蒸気とが接触しない間接加熱として行われ、これにより油が予備的に加熱される。もちろん蒸気に代えて熱水を用いることも可能である。   The primary heater 4 has a sealed pot 12 as shown in FIG. Inside the kettle 12, an oil flow path 13 and a steam flow path 14 are stretched in a mesh shape by pipes or the like, and the flow paths 13 and 14 are blocked by a wall such as a pipe. The shuttle 12 is provided with inlets 13a and 14a and outlets 13b and 14b for the oil passage 13 and the steam passage 14 in the shuttle 12, respectively. As oil and steam flow through the flow paths 13 and 14, respectively, the heat of the steam is transmitted to the oil through a wall such as a pipe to heat and sterilize the oil. The sterilization by the primary heater 4 is performed as indirect heating in which the oil and the steam do not come into contact with each other, thereby preliminarily heating the oil. Of course, hot water may be used instead of steam.

一次加熱は次の二次加熱器５における加熱能力の不足を補う意味で設けられるものであり、従って二次加熱器５の加熱能力、殺菌能力が十分な場合は省略可能である。   The primary heating is provided to make up for the shortage of the heating capacity in the next secondary heater 5, and therefore can be omitted if the heating capacity and sterilization capacity of the secondary heater 5 are sufficient.

この一次加熱は、図４に示すような加熱器４ａによっても行うことができる。   This primary heating can also be performed by a heater 4a as shown in FIG.

図４において、符号１５ａ，１５ｂは油の送り管と戻り管をそれぞれ示し、符号１６ａ，１６ｂは蒸気用の送り管と戻り管をそれぞれ示し、符号１７・・・は油と蒸気がそれぞれ流入するシェルを示す。各シェル１７には、中央の隔壁１７ａで仕切られた扁平な油室Ｐと蒸気室Ｑとが背中合わせに形成される。隔壁１７ａには熱交換用の図示しないフィンが多数形成される。これらのシェル１７が油室Ｐ同士合致し、蒸気室Ｑ同士が合致するように一方向に重ね合わされる。また、各シェル１７の油室Ｐ側には蒸気を素通りさせるための上記蒸気用の送り管１６ａと戻り管１６ｂとにそれぞれ連通する蒸気用パイプｑが隔壁１７ａを貫通するように取り付けられ、隣り合うシェル１７の油室Ｐ内の蒸気用パイプｑ同士が連結される。同様に、各シェル１７の蒸気室Ｑ側には油を素通りさせるための油の送り管１５ａと戻り管１５ｂとにそれぞれ連通する油用パイプｐが取り付けられ、隣り合うシェル１７の蒸気室Ｑ内の油用パイプｐ同士が連結される。   4, reference numerals 15a and 15b denote an oil feed pipe and a return pipe, respectively, reference numerals 16a and 16b denote a steam feed pipe and a return pipe, respectively, and reference numeral 17... Flows oil and steam, respectively. Indicates a shell. In each shell 17, a flat oil chamber P and a steam chamber Q partitioned by a central partition wall 17a are formed back to back. A large number of fins (not shown) for heat exchange are formed on the partition wall 17a. These shells 17 are overlapped in one direction so that the oil chambers P coincide with each other and the steam chambers Q coincide with each other. Further, on the oil chamber P side of each shell 17, a steam pipe q communicating with the steam feed pipe 16a and the return pipe 16b for allowing steam to pass therethrough is attached so as to penetrate the partition wall 17a. The steam pipes q in the oil chamber P of the matching shell 17 are connected to each other. Similarly, an oil pipe p communicating with an oil feed pipe 15a and a return pipe 15b for allowing oil to pass through is attached to the side of the steam chamber Q of each shell 17, and the inside of the steam chamber Q of the adjacent shell 17 is attached. Are connected to each other.

この一次加熱器４ａにおいて、油が送り管１５ａから戻り管１５ｂへとシェル１７間の油室Ｐ内を経て流れ、一方、蒸気も送り管１６ａから戻り管１６ｂへとシェル１７間の蒸気室Ｑを経て流れ、その間蒸気の熱が各シェル１７，１８の隔壁１７ａを介して油に伝わる。これにより、油温が上記温度まで上昇し、油が間接加熱される。   In the primary heater 4a, oil flows from the feed pipe 15a to the return pipe 15b through the oil chamber P between the shells 17, while steam also flows from the feed pipe 16a to the return pipe 16b in the steam chamber Q between the shells 17. In the meantime, the heat of the steam is transmitted to the oil through the partition walls 17a of the shells 17 and 18. Thereby, oil temperature rises to the said temperature and oil is indirectly heated.

二次加熱（ＩＩ）のための二次加熱器５は、油を更に加熱することで油温を好ましくは１２０°Ｃ〜１６０°Ｃより好ましくは１３５°Ｃ〜１５０°Ｃまで高める。１２０°Ｃよりも低い温度であると殺菌不良を生じるおそれがあり、また１６０°Ｃより高い温度であると油が焦げたり劣化したりするおそれがある。加熱時間は望ましくは大体２秒〜３秒である。   The secondary heater 5 for the secondary heating (II) further raises the oil temperature by further heating the oil, preferably from 120 ° C to 160 ° C, more preferably from 135 ° C to 150 ° C. If the temperature is lower than 120 ° C, sterilization failure may occur, and if the temperature is higher than 160 ° C, the oil may be burnt or deteriorated. The heating time is desirably about 2 to 3 seconds.

二次加熱器５としては、図３に示すようなスチームインジェクション式加熱器を用いることができる。この加熱器５は、外側から内側へと第一、第二、第三の筒体１９，２０，２１が入れ子状に設けられ、第三の筒体２１の空洞内に弁棒２２が挿入されることにより構成される。第一、第二、第三の筒体１９，２０，２１及び弁棒２２の相互間はネジ２３，２４，２５で同一方向に螺進退可能に結合している。第一、第二、第三の筒体１９，２０，２１及び弁棒２２の先端部では相互間に環状の隙間２６，２７，２８が形成され、第一の筒体１９内で第二、第三の筒体２０，２１及び弁棒２２を回転させ相対的に螺進退させることで隙間２６，２７，２８の大きさを細かく加減することができるようになっている。また、油を加熱器５内に導入するための入口５ａが第一の筒体１９に設けられ、この入口５ａに対応して第二の筒体２０には貫通孔２０ａが形成され、第一の筒体１９の先端には油を加熱器５外に取り出すための出口５ｂが形成される。さらに、蒸気を加熱器５内に導入するための入口５ｃが第一の筒体１９に設けられ、この入口５ｃが上記油の出口５ｂに導通せしめられる。なお、蒸気に代えて熱水を用いることも可能である。   As the secondary heater 5, a steam injection heater as shown in FIG. 3 can be used. In the heater 5, first, second, and third cylinders 19, 20, and 21 are provided in a nested manner from the outside to the inside, and a valve rod 22 is inserted into the cavity of the third cylinder 21. It is constituted by. The first, second, and third cylinders 19, 20, and 21 and the valve rod 22 are coupled to each other by screws 23, 24, and 25 so that they can be screwed back and forth in the same direction. The first, second and third cylinders 19, 20, 21 and the tip of the valve stem 22 are formed with annular gaps 26, 27, 28 between them. The sizes of the gaps 26, 27, and 28 can be finely adjusted by rotating the third cylinders 20, 21 and the valve rod 22 to relatively advance and retract. An inlet 5a for introducing oil into the heater 5 is provided in the first cylinder 19, and a through hole 20a is formed in the second cylinder 20 corresponding to the inlet 5a. An outlet 5 b for taking oil out of the heater 5 is formed at the tip of the cylindrical body 19. Further, an inlet 5c for introducing steam into the heater 5 is provided in the first cylinder 19, and this inlet 5c is electrically connected to the oil outlet 5b. It is also possible to use hot water instead of steam.

油は上述したようにポンプ３により流路１内を流れ、加圧状態で二次加熱器５内に入口５ａから流入して出口５ｂへと向かい、環状の隙間２７，２８を通過する際に蒸気が隙間２６から吹き込まれることで蒸気に直に接して加熱される。油はポンプ３と制御弁８との間で大気圧以上に加圧されていることから、沸点が高まり上述したような高温まで加熱され殺菌される。この殺菌は直接加熱であり、短時間で大きな熱量が蒸気から油に供給される結果比較的短時間で殺菌される。   The oil flows through the flow path 1 by the pump 3 as described above, flows into the secondary heater 5 from the inlet 5a in the pressurized state, travels toward the outlet 5b, and passes through the annular gaps 27 and 28. When the steam is blown from the gap 26, it is heated in direct contact with the steam. Since the oil is pressurized above the atmospheric pressure between the pump 3 and the control valve 8, the boiling point increases and the oil is heated to the high temperature as described above and sterilized. This sterilization is direct heating, and as a result of supplying a large amount of heat from steam to the oil in a short time, it is sterilized in a relatively short time.

この二次加熱は、図５に示すようなスチームインフュージョン式の加熱器５ｄによっても行うことができる。この加熱器５ｄは上下方向に伸びる筒体２９を備え、この筒体２９の上端に多数の小孔の集合により形成される油の入口３０が設けられ、筒体２９の下端に先細になった油の出口３１が設けられる。また、筒体２９の上下方向の中間には蒸気の入口３２ａと出口３２ｂが設けられる。油は加圧状態で入口３０の各小孔３０ａから筒体２９内に筋状に注入され、蒸気がその入口３２ａから筒体２９内に注入される。油は蒸気と直に接触することで短時間で大きな熱量を蒸気から与えられ速やかにかつ確実に殺菌される。殺菌された油は出口３１から蒸気の水分を含んだ状態で筒体２９外に取り出され、蒸気は油に熱を奪われた後、出口３２ｂから筒体２９外に排出される。   This secondary heating can also be performed by a steam infusion type heater 5d as shown in FIG. The heater 5d includes a cylindrical body 29 extending in the vertical direction, and an oil inlet 30 formed by a collection of many small holes is provided at the upper end of the cylindrical body 29, and is tapered at the lower end of the cylindrical body 29. An oil outlet 31 is provided. A steam inlet 32 a and an outlet 32 b are provided in the middle of the cylinder 29 in the vertical direction. Oil is injected in a streak shape into each cylinder 29 from each small hole 30a of the inlet 30 in a pressurized state, and steam is injected into the cylinder 29 from its inlet 32a. Oil comes in direct contact with steam and gives a large amount of heat from the steam in a short time and is sterilized quickly and reliably. The sterilized oil is taken out of the cylinder 29 from the outlet 31 in a state of containing moisture of the steam, and after the heat is deprived of heat by the oil, the steam is discharged out of the cylinder 29 from the outlet 32b.

一次冷却（ＩＩＩ）のための一次冷却器６は、図２に示した加熱器４と同様な構造であり、油は加熱器４と同様にして注入されるが、蒸気に代えて冷却水が蒸気の注入される箇所に注入される。この一次冷却により、油は二次加熱温度から、４０°Ｃ〜６０°Ｃ程度にまで冷却されて出口１３ｂ（図２参照）から一次冷却器６外に取り出される。   The primary cooler 6 for primary cooling (III) has the same structure as the heater 4 shown in FIG. 2, and oil is injected in the same manner as the heater 4, but cooling water is used instead of steam. It is injected into the place where steam is injected. By this primary cooling, the oil is cooled from the secondary heating temperature to about 40 ° C. to 60 ° C. and taken out from the primary cooler 6 through the outlet 13b (see FIG. 2).

二次冷却（ＩＶ）のための二次冷却器７も一次冷却器６と同様な構造であり、一次冷却器６外に流出した油が二次冷却器７内に注入され、二次冷却器７内に供給された冷却水によって、好ましくは室温〜６０°Ｃ、より好ましくは３０°Ｃ〜５０°Ｃまで冷却され、出口１３ｂ（図２参照）から二次冷却器７外に取り出される。６０°Ｃより高い温度であると、後に油を袋等に充填しヒートシールした場合に、袋等のヒートシール性を損なうおそれがある。   The secondary cooler 7 for the secondary cooling (IV) has the same structure as the primary cooler 6, and oil that has flowed out of the primary cooler 6 is injected into the secondary cooler 7, and the secondary cooler 7 is preferably cooled to room temperature to 60 ° C., more preferably 30 ° C. to 50 ° C., and is taken out from the secondary cooler 7 through the outlet 13b (see FIG. 2). If the temperature is higher than 60 ° C., the heat sealability of the bag or the like may be impaired when the bag is filled with oil and heat sealed later.

なお、一次冷却器６の冷却性能が高く一次冷却器６のみで上記温度まで油を冷却することができる場合は二次冷却器７を省略することができる。また、一次、二次の冷却器６，７の冷却性能が低い場合は、三次以上の冷却器を設けてもよい。   In addition, when the cooling performance of the primary cooler 6 is high and the oil can be cooled to the above temperature only by the primary cooler 6, the secondary cooler 7 can be omitted. Further, when the cooling performance of the primary and secondary coolers 6 and 7 is low, a tertiary or higher cooler may be provided.

サージタンク９は二次冷却器７を出て制御弁８を通過してきた殺菌処理済みの油を貯留するようになっている。サージタンク９には開閉弁３３の設けられた水抜き管３４が接続される。上記二次加熱器５で混入した水がこのサージタンク９の底に溜まるが、この水が水抜き管３４からサージタンク９外に除去される。このサージタンク９は油の殺菌処理速度と次の充填機の充填速度との調整を図る機能も果たすようになっている。   The surge tank 9 stores the sterilized oil that has exited the secondary cooler 7 and passed through the control valve 8. A drain pipe 34 provided with an opening / closing valve 33 is connected to the surge tank 9. The water mixed in the secondary heater 5 accumulates at the bottom of the surge tank 9, but this water is removed from the drain tank 34 to the outside of the surge tank 9. The surge tank 9 also functions to adjust the oil sterilization speed and the filling speed of the next filling machine.

サージタンク９から包装（ＶＩ）のための充填機１１へと流路１が伸びており、この流路１に設けられたポンプ３５によってサージタンク９内の油が充填機１１へと送られる。充填機１１はチャンバー１１ａを備え、このチャンバー１１ａ内に図示しない製袋機を備えている。チャンバー１１ａ内は過酸化水素等の殺菌剤により殺菌され無菌状態となっている。製袋機は樹脂フィルムをヒートシールして袋３６を作りながら各袋３６に油が定量充填されると袋３６の口をヒートシールにより閉じるようになっている。サージタンク９から伸びる流路１の先端には図示しないノズルが取り付けられ、このノズルが製袋機で作られる袋３６の口に臨んでおり、ノズルから袋３６内に殺菌済みの油を注入する。油は殺菌処理されているので、加熱時に混入した水が残留していたとしても、保存中に腐敗することはない。   A flow path 1 extends from the surge tank 9 to a filling machine 11 for packaging (VI), and oil in the surge tank 9 is sent to the filling machine 11 by a pump 35 provided in the flow path 1. The filling machine 11 includes a chamber 11a, and a bag making machine (not shown) is provided in the chamber 11a. The inside of the chamber 11a is sterilized by a sterilizing agent such as hydrogen peroxide and is in a sterile state. The bag making machine closes the mouth of the bag 36 by heat sealing when a fixed amount of oil is filled in each bag 36 while making the bag 36 by heat sealing the resin film. A nozzle (not shown) is attached to the tip of the flow path 1 extending from the surge tank 9, and this nozzle faces the mouth of the bag 36 made by the bag making machine, and sterilized oil is injected into the bag 36 from the nozzle. . Since the oil has been sterilized, it will not rot during storage even if water mixed in during heating remains.

なお、充填機及び製袋機は公知のものを使用するので、それらの詳細な説明は省略する。   In addition, since a well-known thing is used for a filling machine and a bag making machine, those detailed description is abbreviate | omitted.

図１に示すように、上記油の殺菌装置に対して、水物の殺菌装置を併設しておき、油と一緒に水物を上記充填機で包装することができる。   As shown in FIG. 1, a water sterilizer can be provided alongside the oil sterilizer, and the water can be packaged together with the oil by the filling machine.

水物の殺菌装置は、だし汁等の水物を殺菌しようというもので、水物を加圧状態で流しながら、加熱（Ａ）、冷却（Ｂ）、貯留（Ｃ）の各工程を順次行うようになっている。   The water sterilization apparatus is intended to sterilize water such as soup stock, so that heating (A), cooling (B), and storage (C) are sequentially performed while flowing the water under pressure. It has become.

この水物の殺菌装置は、水物を一方向に流す流路３７を備え、また、この流路３７上に上流側から下流側に向かって、コンテナタンク３８、ポンプ３９、加熱（Ａ）のための加熱器４０、冷却（Ｂ）のための冷却器４１、制御弁４２、貯留（Ｃ）のためのサージタンク４３、ポンプ４４を順に備えている。   The water sterilizer includes a flow path 37 for flowing water in one direction, and the container tank 38, the pump 39, and the heating (A) on the flow path 37 from the upstream side toward the downstream side. A heater 40 for cooling, a cooler 41 for cooling (B), a control valve 42, a surge tank 43 for storage (C), and a pump 44 are provided in this order.

コンテナタンク３８は殺菌前の水物を貯留する。このコンテナタンク３８内の水物は、ポンプ３９によって流路３７に送り出される。流路３７の下流側では制御弁４２が流路３７を絞ることにより、水物はポンプ３９と制御弁４２との間を大気圧以上に加圧されつつ流れる。   The container tank 38 stores water before sterilization. The water in the container tank 38 is sent out to the flow path 37 by the pump 39. On the downstream side of the flow path 37, the control valve 42 throttles the flow path 37, so that water flows between the pump 39 and the control valve 42 while being pressurized to atmospheric pressure or higher.

加熱（Ａ）のための加熱器４０は、室温の水物を加熱することで、水物が例えばだし汁である場合はその温度を１２０°Ｃ〜１６０°Ｃまで高める。加熱時間は望ましくは約２秒〜３秒である。   The heater 40 for heating (A) heats the water at room temperature, and raises the temperature to 120 ° C. to 160 ° C. when the water is dashi stock, for example. The heating time is desirably about 2 to 3 seconds.

加熱器４０としては、図２に示した油の加熱器４と同様な構造のものを使用することができ、蒸気又は熱水を使用した間接加熱により水物を殺菌することができる。   As the heater 40, one having the same structure as the oil heater 4 shown in FIG. 2 can be used, and water can be sterilized by indirect heating using steam or hot water.

冷却（Ｂ）のための冷却器４１は、図２に示した加熱器４と同様な構造であり、水物は加熱器４と同様にして冷却器４１内に注入されるが、加熱器４での蒸気に代えて冷却水が注入される。この冷却により、水物は滅菌温度から、冷却後は３０°Ｃ〜５０°Ｃ程度にまで冷却されて出口１３ｂ（図２参照）から冷却器４１外に取り出される。   The cooler 41 for cooling (B) has the same structure as the heater 4 shown in FIG. 2, and water is injected into the cooler 41 in the same manner as the heater 4. Cooling water is injected instead of the steam. By this cooling, the water is cooled from the sterilization temperature to about 30 ° C. to 50 ° C. after cooling and taken out of the cooler 41 from the outlet 13b (see FIG. 2).

貯留（Ｃ）のためのサージタンク４３は、冷却器４１を出て制御弁４２を通過してきた殺菌処理済みの水物を貯留するようになっている。このサージタンク４３は水物の殺菌処理速度と次の充填機１１の充填速度との調整を図る機能を果たす。   The surge tank 43 for storage (C) stores the sterilized water that has exited the cooler 41 and passed through the control valve 42. The surge tank 43 functions to adjust the water sterilization speed and the filling speed of the next filling machine 11.

図１に示すように、サージタンク４３から包装（ＶＩ）のための充填機１１へと流路３７が伸びており、この流路３７に設けられたポンプ４４によってサージタンク４３内の水物が上述した充填機１１へと送られる。サージタンク４３から伸びる流路３７の先端には図示しないノズルが取り付けられ、このノズルが製袋機１１で作られる袋３６の口に臨んでおり、ノズルから袋３６内に殺菌済みの水物を注入する。すでに袋３６内に注入され又は後から注入される油は殺菌処理されているので、水物が加えられたとしても、保存中に腐敗することはない。   As shown in FIG. 1, a flow path 37 extends from the surge tank 43 to the filling machine 11 for packaging (VI), and water in the surge tank 43 is transferred by a pump 44 provided in the flow path 37. It is sent to the filling machine 11 described above. A nozzle (not shown) is attached to the tip of the flow path 37 extending from the surge tank 43, and this nozzle faces the mouth of the bag 36 made by the bag making machine 11, and sterilized water is put into the bag 36 from the nozzle. inject. Since the oil already injected into the bag 36 or later injected is sterilized, it does not rot during storage even if water is added.

＜実施の形態２＞
図６に示すように、この実施の形態２では実施の形態１における一次冷却器として真空冷却器４５が使用される。二次加熱器５で殺菌された油がこの真空冷却器４５に至ると、二次加熱器５で混入した水分が減圧によって油外に蒸発すると共に、気化熱を油から奪って油を冷却する。また、水分の蒸発によって油の不要な匂いも除去される。 <Embodiment 2>
As shown in FIG. 6, in the second embodiment, a vacuum cooler 45 is used as the primary cooler in the first embodiment. When the oil sterilized by the secondary heater 5 reaches the vacuum cooler 45, the water mixed in the secondary heater 5 evaporates out of the oil due to the reduced pressure, and heats the vaporization from the oil to cool the oil. . Moreover, unnecessary odor of oil is removed by evaporation of moisture.

この一次冷却により油内の水分が除去されることから、サージタンク９から水抜き管３４等（図１参照）が省略されている。   Since the water in the oil is removed by this primary cooling, the drain pipe 34 and the like (see FIG. 1) from the surge tank 9 are omitted.

なお、図６において実施の形態１の場合と同じ部分には同一符号を付して表すこととし、重複した説明を省略する。   In FIG. 6, the same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

本発明は以上説明したように構成されるが、上記実施の形態１，２に限定されるものではなく、例えば上記実施の形態１，２では二次加熱器が一基のみ設けられているが、必要に応じて二基以上設けることも可能である。もちろん水抜き管を併用してもよい。   Although the present invention is configured as described above, it is not limited to the first and second embodiments. For example, in the first and second embodiments, only one secondary heater is provided. Two or more groups can be provided as necessary. Of course, a drain pipe may be used in combination.

本発明の実施の形態１に係る油の殺菌方法を示すブロック図である。It is a block diagram which shows the sterilization method of the oil which concerns on Embodiment 1 of this invention. 一次加熱器の垂直断面図である。It is a vertical sectional view of a primary heater. 二次加熱器の垂直断面図である。It is a vertical sectional view of a secondary heater. 一次加熱器の変形例の斜視図である。It is a perspective view of the modification of a primary heater. 二次加熱器の変形例の垂直断面図である。It is a vertical sectional view of a modification of the secondary heater. 本発明の実施の形態２に係る油の殺菌方法を示すブロック図である。It is a block diagram which shows the sterilization method of the oil which concerns on Embodiment 2 of this invention.

符号の説明Explanation of symbols

１…油の流路
５…加熱器
６…冷却器
９…貯留タンク
３４…水抜き管
４５…真空冷却機 DESCRIPTION OF SYMBOLS 1 ... Oil flow path 5 ... Heater 6 ... Cooler 9 ... Storage tank 34 ... Drain pipe 45 ... Vacuum cooler

Claims (8)

油を加圧状態で流しながら、蒸気又は熱水を注入して直接加熱し、しかる後に油を冷却することを特徴とする油の殺菌方法。   A method for sterilizing oil characterized by injecting steam or hot water and directly heating the oil while flowing the oil in a pressurized state, and then cooling the oil. 請求項１に記載の油の殺菌方法において、直接加熱の前に間接加熱することを特徴とする油の殺菌方法。   2. The oil sterilization method according to claim 1, wherein indirect heating is performed before direct heating. 請求項１に記載の油の殺菌方法において、油の冷却後に油をタンク内に貯留し、直接加熱により混入した水を除去することを特徴とする油の殺菌方法。   The oil sterilization method according to claim 1, wherein the oil is stored in a tank after the oil is cooled, and water mixed in by direct heating is removed. 請求項１に記載の油の殺菌方法において、油の冷却を真空冷却により行うことで、直接加熱により混入した水を除去することを特徴とする油の殺菌方法。   The oil sterilization method according to claim 1, wherein water mixed by direct heating is removed by cooling the oil by vacuum cooling. 油に蒸気又は熱水を注入する直接加熱手段と、直接加熱された油を冷却する冷却手段とが、油を加圧状態で流す油の流路に設けられたことを特徴とする油の殺菌装置。   An oil sterilization characterized in that a direct heating means for injecting steam or hot water into the oil and a cooling means for cooling the directly heated oil are provided in an oil flow path through which oil flows under pressure. apparatus. 請求項５に記載の油の殺菌装置において、直接加熱手段よりも上流側に間接加熱手段が設けられたことを特徴とする油の殺菌方法。   6. The oil sterilizing apparatus according to claim 5, wherein an indirect heating means is provided upstream of the direct heating means. 請求項５に記載の油の殺菌装置において、冷却手段よりも下流側に油の貯留タンクが設けられ、このタンクに直接加熱により混入した水を排出する排出手段が設けられたことを特徴とする油の殺菌装置。   6. The oil sterilization apparatus according to claim 5, wherein an oil storage tank is provided downstream of the cooling means, and a discharge means for discharging water mixed by direct heating is provided in the tank. Oil sterilizer. 請求項５に記載の油の殺菌装置において、冷却手段が真空冷却機であることを特徴とする油の殺菌装置。   6. The oil sterilizer according to claim 5, wherein the cooling means is a vacuum cooler.
JP2006158268A 2006-06-07 2006-06-07 Oil sterilization method Active JP4739123B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009000081A (en) * 2007-06-25 2009-01-08 Dainippon Printing Co Ltd Method and apparatus for sterilizing oil
WO2009059349A1 (en) * 2007-11-05 2009-05-14 Phebra Pty Ltd Sterilisation method
CN102226647A (en) * 2011-04-02 2011-10-26 郑州远洋油脂工程技术有限公司 Cooling circulating water technology and device of vacuum system condenser of grease deodorization workshop section
WO2011138957A1 (en) * 2010-05-07 2011-11-10 株式会社Adeka Method for purification of edible oil or fat
CN103773600A (en) * 2012-10-22 2014-05-07 北京中天金谷粮油工程技术有限公司 Full negative pressure vacuum system leaching process

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JPS6344841A (en) * 1986-08-11 1988-02-25 Asahi Denka Kogyo Kk Production of o/w-type emulsion having high viscosity
JPH0235038A (en) * 1988-07-25 1990-02-05 Asahi Denka Kogyo Kk Production of oil-in-water type emulsion
JP2000201621A (en) * 1998-09-28 2000-07-25 Meka:Kk Method and apparatus for purifying edible oil

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JPS6344841A (en) * 1986-08-11 1988-02-25 Asahi Denka Kogyo Kk Production of o/w-type emulsion having high viscosity
JPH0235038A (en) * 1988-07-25 1990-02-05 Asahi Denka Kogyo Kk Production of oil-in-water type emulsion
JP2000201621A (en) * 1998-09-28 2000-07-25 Meka:Kk Method and apparatus for purifying edible oil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009000081A (en) * 2007-06-25 2009-01-08 Dainippon Printing Co Ltd Method and apparatus for sterilizing oil
WO2009059349A1 (en) * 2007-11-05 2009-05-14 Phebra Pty Ltd Sterilisation method
WO2011138957A1 (en) * 2010-05-07 2011-11-10 株式会社Adeka Method for purification of edible oil or fat
CN102843914A (en) * 2010-05-07 2012-12-26 株式会社艾迪科 Method for purification of edible oil or fat
JP5829209B2 (en) * 2010-05-07 2015-12-09 株式会社Adeka Method for refining edible oils and fats
CN102226647A (en) * 2011-04-02 2011-10-26 郑州远洋油脂工程技术有限公司 Cooling circulating water technology and device of vacuum system condenser of grease deodorization workshop section
CN103773600A (en) * 2012-10-22 2014-05-07 北京中天金谷粮油工程技术有限公司 Full negative pressure vacuum system leaching process

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