JP5139197B2 - Steam convection oven and cleaning method thereof - Google Patents

Steam convection oven and cleaning method thereof Download PDF

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JP5139197B2
JP5139197B2 JP2008205068A JP2008205068A JP5139197B2 JP 5139197 B2 JP5139197 B2 JP 5139197B2 JP 2008205068 A JP2008205068 A JP 2008205068A JP 2008205068 A JP2008205068 A JP 2008205068A JP 5139197 B2 JP5139197 B2 JP 5139197B2
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JP2010038501A (en
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和芳 小柳
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株式会社マルゼン
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本発明は、飽和蒸気を用いて調理を行うスチームコンベクションオーブンとその洗浄方法に関する。特には、蒸気発生タンクの洗浄を考慮したコンベクションオーブンに関する。   The present invention relates to a steam convection oven that performs cooking using saturated steam and a cleaning method thereof. In particular, the present invention relates to a convection oven in consideration of cleaning of a steam generation tank.

スチームコンベクションオーブンは、蒸気を発生させるタンクと、調理される食品が収容される調理庫を備え、蒸気発生タンクで発生した蒸気が調理庫に送られて、食品を加熱調理するものである。このようなスチームコンベクションオーブンにおいては、調理中の食品から油や煮汁などが飛び散って調理庫の壁面に付着して汚れる。そこで、庫内を洗浄する種々の方法が提案されている（例えば、特許文献１参照）。この方法としては、洗剤を壁面に塗布しておき、次に、蒸気発生装置から庫内に蒸気を散布して壁面に付着した汚れを浮き上がらせ、その後、散水装置から庫内に水を散水して、浮き上がった汚れを洗い流すものが一般的である。
実開平３−５８２２３号公報 The steam convection oven includes a tank that generates steam and a cooking chamber in which food to be cooked is stored, and steam generated in the steam generation tank is sent to the cooking chamber to cook food. In such a steam convection oven, oil, boiled juice, etc. scatters from the food being cooked and adheres to the wall of the cooking cabinet and becomes dirty. Therefore, various methods for cleaning the inside of the cabinet have been proposed (see, for example, Patent Document 1). In this method, a detergent is applied to the wall surface, then steam is sprayed from the steam generator into the chamber to raise the dirt adhering to the wall surface, and then water is sprayed from the watering device into the chamber. It is common to wash away dirt that has floated.
Japanese Utility Model Publication No. 3-58223

一方、蒸気発生タンクは調理庫と離れているので、油や煮汁などで汚れることはない。しかし、水道水が供給されて蒸発するので、タンクの壁面に、水道水中に含まれるミネラル分（カルシウムやマグネシウム）などが白い粉状の物質（カルキともいう）として付着する。このような物質は体に害はないが、タンクも定期的に洗浄することが好ましい。この湯アカは、壁面にこびりついてとれにくい。洗浄方法としては、例えば、洗浄剤（例えば、クエン酸やリン酸）を２５％程度の濃度となるように薄めて洗浄液を作成し、その洗浄液を蒸気発生タンクに貯留させて一晩程度放置した後、排水及びすすぎを行うことが一般的である。洗浄剤が残留していると、洗浄剤を含んだ蒸気が庫内に噴出するので、タンクを十分にすすぐ必要がある。このため、一連の作業には、９時間程度必要となっていた。
なお、前述の特許文献などは、庫内の洗浄のみを提案したものであり、蒸気発生タンクの洗浄には言及されていない。 On the other hand, since the steam generation tank is separated from the cooking chamber, it is not contaminated with oil or broth. However, since tap water is supplied and evaporates, minerals (calcium and magnesium) contained in the tap water adhere to the tank wall surface as a white powdery substance (also called chalk). Such substances are not harmful to the body, but it is preferable to clean the tank regularly. This hot water is hard to stick to the wall. As a cleaning method, for example, a cleaning solution is prepared by diluting a cleaning agent (for example, citric acid or phosphoric acid) so as to have a concentration of about 25%, and the cleaning solution is stored in a steam generation tank and is left overnight. Afterwards, it is common to drain and rinse. If the cleaning agent remains, the steam containing the cleaning agent spouts into the cabinet, so the tank needs to be rinsed sufficiently. For this reason, about 9 hours were required for a series of work.
In addition, the above-mentioned patent documents etc. propose only the cleaning of the inside of the warehouse, and are not referred to the cleaning of the steam generation tank.

本発明は上記の問題点に鑑みてなされたものであって、蒸気発生タンクの洗浄を考慮したスチームコンベクションオーブンとその洗浄方法を提供することを目的とする。   The present invention has been made in view of the above problems, and an object thereof is to provide a steam convection oven and a cleaning method thereof in consideration of cleaning of a steam generation tank.

本発明のスチームコンベクションオーブンは、 蒸気発生タンク及びその発生した蒸気が送られる食品調理庫を備えるスチームコンベクションオーブンであって、 前記蒸気発生タンクのお湯を循環させる循環系統と、 該循環系統に洗浄剤を投入する洗浄剤投入系統と、をさらに備えることを特徴とする。   The steam convection oven of the present invention is a steam convection oven comprising a steam generation tank and a food cooking chamber to which the generated steam is sent, a circulation system for circulating hot water in the steam generation tank, and a cleaning agent in the circulation system And a cleaning agent charging system for charging.

ここで、洗浄剤とは、蒸気発生タンクの壁面に白い粉状の物質としてこびりついた、水道水中に含まれるミネラル分（カルシウムやマグネシウム、カルキともいう）などからなる汚れを除去する液や粉末である。
本発明によれば、蒸気発生タンクのお湯を循環させる循環系統を形成し、この循環系統に洗浄剤を投入して、洗浄剤を含んだお湯を同系統内で循環させる。この循環により、蒸気発生タンク内で洗浄剤を含んだお湯が攪拌されるので、タンク内の汚れが落ちやすくなる。従来の方法では、洗浄剤を蒸気発生タンクに貯留させて放置しておくだけであったので、汚れ除去に長い時間が必要があったが、本発明によれば、タンク内で洗浄剤を攪拌することにより、洗浄時間を短くすることができるとともに、必要な洗浄剤の量を少なくすることができる。 Here, the cleaning agent is a liquid or powder that removes dirt, such as minerals (also called calcium, magnesium, or chalk) contained in tap water, stuck to the wall of the steam generation tank as a white powdery substance. is there.
According to the present invention, a circulation system for circulating hot water in a steam generation tank is formed, and a cleaning agent is introduced into this circulation system, and hot water containing the cleaning agent is circulated in the same system. This circulation stirs the hot water containing the cleaning agent in the steam generation tank, so that the dirt in the tank is easily removed. In the conventional method, since the cleaning agent is only stored in the steam generation tank and left to stand, it takes a long time to remove the dirt. According to the present invention, the cleaning agent is stirred in the tank. As a result, the cleaning time can be shortened and the amount of the necessary cleaning agent can be reduced.

本発明においては、 前記循環系統が、 前記蒸気発生タンクのお湯を前記調理庫の庫内上部の吐湯口に送る庫内洗浄管路と、 前記蒸気発生タンクから前記庫内に蒸気を吹き込む蒸気吹き込み口と前記吐湯口との間を繋ぐ仮設連結管と、を有する。   In the present invention, the circulation system includes an internal cleaning conduit that sends hot water from the steam generation tank to a hot water outlet at the upper part of the cooking chamber, and steam injection that blows steam from the steam generation tank into the storage. A temporary connecting pipe connecting the mouth and the spout.

調理庫に庫内洗浄用の吐湯口が設けられているタイプのスチームコンベクションオーブンにおいては、この吐湯口に仮設連絡管を繋ぐことによって、洗浄剤を含んだお湯循環系統内で循環させて、蒸気発生タンク内で洗浄剤を含んだお湯を攪拌させるようにして蒸気発生タンクを洗浄することができる。   In a steam convection oven of the type in which the hot water outlet for cleaning the inside of the cooking chamber is provided, a temporary connecting pipe is connected to the hot water outlet, and the steam is circulated in the hot water circulation system containing the cleaning agent. The steam generation tank can be cleaned by stirring hot water containing a cleaning agent in the generation tank.

または、 前記循環系統が、 前記蒸気発生タンクの底から出て該タンクの上部に入る管路を有することともできる。   Or the said circulation system can also have a pipe line which goes out from the bottom of the said steam generation tank, and enters into the upper part of this tank.

調理庫に庫内洗浄用の吐湯口が設けられていないタイプのスチームコンベクションオーブンにおいては、蒸気発生タンクの底から出て該タンクの上部に入る管路に洗浄剤を投入することにより、洗浄剤を含んだお湯を循環系統内で循環させるようにして、蒸気発生タンク内で洗浄剤を含んだお湯を攪拌することができる。   In a steam convection oven of the type that does not have a spout for cleaning the inside of the cooking chamber, the cleaning agent is put into the pipeline that goes out from the bottom of the steam generation tank and enters the upper part of the tank. The hot water containing the cleaning agent is circulated in the circulation system, and the hot water containing the cleaning agent can be stirred in the steam generation tank.

または、 前記循環系統が、 前記蒸気発生タンクのお湯を前記調理庫の庫内上部の吐湯口に送る庫内洗浄管路と、 該庫内洗浄管路から前記蒸気発生タンクへ行く分岐管路と、 前記庫内洗浄管路の前記分岐管路への分岐部に設けられた切換え弁と、を備えることともできる。   Alternatively, the circulation system includes an internal cleaning pipe that sends hot water from the steam generation tank to a spout at the upper part of the cooking chamber, and a branch pipe that extends from the internal cleaning pipe to the steam generation tank. And a switching valve provided at a branching portion of the internal cleaning pipeline to the branch pipeline.

本発明においては、調理庫に庫内洗浄用の吐湯口が設けられているタイプのスチームコンベクションオーブンにおいて、庫内洗浄管路から分岐管路を通って蒸気発生タンクに戻る循環系統を形成する。この場合、吐湯口への仮設連絡管路を取り付けることなく、洗浄剤を含んだお湯を循環系統内で循環させるようにして、蒸気発生タンク内で洗浄剤を含んだお湯を攪拌することができる。   In the present invention, in a steam convection oven of a type in which a hot water outlet for cleaning the interior is provided in the cooking cabinet, a circulation system is formed that returns from the interior cleaning pipeline to the steam generation tank through the branch pipeline. In this case, the hot water containing the cleaning agent can be stirred in the steam generation tank by circulating the hot water containing the cleaning agent in the circulation system without attaching a temporary connection pipe to the spout. .

本発明のスチームコンベクションオーブンの洗浄方法は、 蒸気発生タンク及びその発生した蒸気が送られる食品調理庫を備えるスチームコンベクションオーブンの洗浄方法であって、 前記蒸気発生タンクのお湯を循環させる循環系統に、洗浄剤を投入し、 該循環系統に洗浄剤を含んだお湯を循環させることにより、前記蒸気発生タンク内で洗浄剤を含んだお湯を攪拌し、該蒸気発生タンクを洗浄することを特徴とする。   The steam convection oven cleaning method of the present invention is a steam convection oven cleaning method including a steam generation tank and a food cooking chamber to which the generated steam is sent, and a circulation system for circulating hot water in the steam generation tank, A cleaning agent is added, and hot water containing a cleaning agent is circulated in the circulation system, whereby the hot water containing the cleaning agent is stirred in the steam generation tank, and the steam generation tank is cleaned. .

以上の説明から明らかなように、本発明によれば、蒸気発生タンク内で洗浄剤を含んだお湯を攪拌させて同タンクを洗浄するので、洗浄時間を短くすることができるとともに、使用する洗剤の量を少なくすることができる。本発明は、調理庫洗浄用の庫内吐湯口が設けられたタイプのものでも、吐湯口が設けられていないタイプのものにも適用できる。   As is clear from the above description, according to the present invention, hot water containing a cleaning agent is stirred in the steam generation tank to clean the tank, so that the cleaning time can be shortened and the detergent used The amount of can be reduced. The present invention can be applied to a type in which a hot water outlet for cleaning a cooking cabinet is provided or a type in which a hot water outlet is not provided.

発明を実施するための形態BEST MODE FOR CARRYING OUT THE INVENTION

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。
図１は、本発明の実施の形態に係るスチームコンベクションオーブンの構造を模式的に示す図である。
スチームコンベクションオーブン１は、蒸気を発生させるタンク１０と、調理される食品が収容される調理庫２０とを備える。蒸気発生タンク１０と、調理庫２０との間には蒸気供給管１１が設けられている。さらに、同オーブン１には、蒸気発生タンク１０のお湯を循環させる循環系統３０と、同循環系統３０に洗浄剤を投入する洗浄剤投入系統４０と、が備えられている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram schematically showing the structure of a steam convection oven according to an embodiment of the present invention.
The steam convection oven 1 includes a tank 10 that generates steam and a cooking cabinet 20 in which food to be cooked is stored. A steam supply pipe 11 is provided between the steam generation tank 10 and the cooking cabinet 20. Further, the oven 1 is provided with a circulation system 30 for circulating hot water in the steam generation tank 10 and a cleaning agent charging system 40 for supplying a cleaning agent to the circulation system 30.

蒸気発生タンク１０の上面には、蒸気供給管１１が接続している。さらに、同タンク１０には、開閉弁１４を備えた水道水供給管１３が接続しており、同供給管１３からから水道水が供給されて貯留される。また、同タンク１０にはヒータ１５が備えられており、タンク１０に貯留された水道水を沸騰させて蒸気を発生させる。さらに、同タンク１０の底面には、ポンプ１８を備えた排水管１７が接続している。ポンプ１８を駆動することにより、タンク１０内を排水する。   A steam supply pipe 11 is connected to the upper surface of the steam generation tank 10. Further, a tap water supply pipe 13 having an on-off valve 14 is connected to the tank 10, and tap water is supplied from the supply pipe 13 and stored. In addition, the tank 10 is provided with a heater 15, and the tap water stored in the tank 10 is boiled to generate steam. Further, a drain pipe 17 equipped with a pump 18 is connected to the bottom surface of the tank 10. By driving the pump 18, the tank 10 is drained.

調理庫２０の側壁には、蒸気吹き出し口２１が設けられている。同口２１には、蒸気発生タンク１０から延びる蒸気供給管１１が接続している。蒸気発生タンク１０で発生した蒸気は、蒸気供給管１１を通って蒸気吹き込み口２１から調理庫２０内に噴出されて、庫内の食品を加熱調理する。また、調理庫２０の上面には、庫内洗浄用の吐湯口２２が設けられている。   A steam outlet 21 is provided on the side wall of the cooking chamber 20. A steam supply pipe 11 extending from the steam generation tank 10 is connected to the same port 21. The steam generated in the steam generation tank 10 is ejected from the steam inlet 21 into the cooking chamber 20 through the steam supply pipe 11, and heats the food in the chamber. In addition, on the upper surface of the cooking cabinet 20, a hot water outlet 22 for cleaning the inside of the cooking cabinet 20 is provided.

循環系統３０は、蒸気発生タンク１０の底部付近と、調理庫２０の上壁に設けられた吐湯口２２とを接続する庫内洗浄管路３１と、吐湯口２２と蒸気吹き込み口２１との間を繋ぐ仮設連結管３３と、を有する。庫内洗浄管路３１の途中には、ポンプ３２が設けられており、ポンプ３２の駆動により、蒸気発生タンク１０内の液体が庫内洗浄管路３１を通って吐湯口２２に送られる。仮設連絡管３３は、例えば、フレキシブルなホースなどであり、吐湯口２２に取り外し可能に取り付けられる。同連絡管３３は、蒸気吹き込み口２１から蒸気供給管１１内に入り、先端３３ａが下方に折れ曲がって蒸気発生タンク１０内の液面に対して開口している。調理庫２０の蒸気吹き込み口２１において、同口２１の内縁と仮設連絡管３３の外面との間は、シール３５で塞がれている。   The circulation system 30 is connected between the vicinity of the bottom of the steam generation tank 10 and the hot water outlet 22 provided on the upper wall of the cooking chamber 20, and between the hot water outlet 22 and the steam inlet 21. And a temporary connecting pipe 33 for connecting the two. A pump 32 is provided in the middle of the internal cleaning conduit 31, and the liquid in the steam generation tank 10 is sent to the spout 22 through the internal cleaning conduit 31 by driving the pump 32. The temporary connection pipe 33 is a flexible hose, for example, and is detachably attached to the spout 22. The communication pipe 33 enters the steam supply pipe 11 from the steam inlet 21, and the tip 33 a is bent downward and opens to the liquid level in the steam generation tank 10. In the steam blowing port 21 of the cooking chamber 20, a gap is sealed between the inner edge of the port 21 and the outer surface of the temporary connecting pipe 33.

洗浄剤投入系統４０は、洗浄剤（例えば、クエン酸やリン酸）が貯留される洗浄剤タンク４１と、同タンク４１と庫内洗浄管路３１との間に設けられた洗浄剤投入管路４３を有する。同管路４３は、庫内洗浄管路３１のポンプ３２の下流側に接続している。また、同管路４３の途中にはポンプ４４が設けられており、ポンプ４４の駆動により、洗浄剤が洗浄剤タンク４１から洗浄剤挿入管路４３を通って庫内洗浄管路３１に投入される。   The cleaning agent supply system 40 includes a cleaning agent tank 41 in which cleaning agents (for example, citric acid and phosphoric acid) are stored, and a cleaning agent input conduit provided between the tank 41 and the internal cleaning conduit 31. 43. The pipe 43 is connected to the downstream side of the pump 32 of the internal cleaning pipe 31. In addition, a pump 44 is provided in the middle of the pipe 43, and by driving the pump 44, the cleaning agent is supplied from the cleaning agent tank 41 through the cleaning agent insertion pipe 43 to the internal cleaning pipe 31. The

次に、蒸気発生タンク１０を洗浄する方法の一例を説明する。
まず、仮設連絡管３３を吐湯口２２に取り付けて、同管３３を蒸気吹き出し口２１から蒸気供給管１１内に通しておく。そして、蒸気吹き出し口２１と仮設連絡管３３の周囲との間をシール３５で塞いでおく。次に、ヒータ１５を作動して蒸気発生タンク１０内の水道水を所定の温度（例えば、８０℃）に加熱する。所定の温度に加熱後、庫内洗浄管路３１のポンプ３２を作動して、蒸気発生タンク１０内のお湯を庫内洗浄管路３１を通して吐湯口２２に送る。お湯は、吐湯口２２から仮設連絡管３３を通って蒸気発生タンク１０に戻り、これによりお湯が循環する。お湯が循環し始めた後、洗浄剤供給管路４３のポンプ４４を作動し、洗浄剤タンク４１内の洗浄剤を、洗浄剤供給管路４３を通して庫内洗浄管路３１に供給する。すると、洗浄剤が含まれたお湯が、庫内洗浄管路３１−吐湯口２２−仮設連絡管３３−蒸気発生タンク１０を循環するとともに、蒸気発生タンク１０内のお湯が攪拌されることになる。なお、各ポンプ３２、４４の作動時間や作動サイクルは、適宜調整する。 Next, an example of a method for cleaning the steam generation tank 10 will be described.
First, the temporary connecting pipe 33 is attached to the hot water outlet 22, and the pipe 33 is passed through the steam supply pipe 11 from the steam outlet 21. Then, the seal 35 closes the space between the steam outlet 21 and the temporary communication pipe 33. Next, the heater 15 is operated to heat the tap water in the steam generation tank 10 to a predetermined temperature (for example, 80 ° C.). After heating to a predetermined temperature, the pump 32 of the internal cleaning conduit 31 is operated to send hot water in the steam generation tank 10 through the internal cleaning conduit 31 to the spout 22. Hot water returns from the spout 22 through the temporary connection pipe 33 to the steam generation tank 10, thereby circulating hot water. After hot water begins to circulate, the pump 44 of the cleaning agent supply pipe 43 is operated to supply the cleaning agent in the cleaning agent tank 41 to the internal cleaning pipe 31 through the cleaning agent supply pipe 43. Then, the hot water containing the cleaning agent circulates in the internal cleaning pipe 31-the hot water outlet 22-the temporary connection pipe 33-the steam generation tank 10, and the hot water in the steam generation tank 10 is stirred. . In addition, the operation time and the operation cycle of each pump 32 and 44 are adjusted suitably.

このように、蒸気発生タンク１０内で洗浄剤が含まれたお湯を攪拌することにより、タンク１０の壁面に洗浄剤が行き渡り、壁面の汚れを落とすことができる。前述した従来の洗浄方法では、タンク内のお湯を攪拌することができなかったため、洗浄剤を含んだお湯を貯留させて長時間（例えば一晩程度）放置しておくことが必要であった。本例の方法では、従来の方法に比べて、洗浄剤の量を少なくすることができる（一例で１／５程度）とともに、洗浄時間を短縮することができる。   In this way, by stirring the hot water containing the cleaning agent in the steam generation tank 10, the cleaning agent spreads over the wall surface of the tank 10 and the wall surface can be cleaned. In the conventional cleaning method described above, since the hot water in the tank could not be stirred, it was necessary to store the hot water containing the cleaning agent and leave it for a long time (for example, overnight). In the method of this example, the amount of the cleaning agent can be reduced (about 1/5 in one example) and the cleaning time can be shortened as compared with the conventional method.

蒸気発生タンク１０内を所定時間攪拌した後、排水管１７のポンプ１８を作動させて蒸気発生タンク１０内のお湯を排水する。排水後、循環系統２０に、洗浄剤を含まないお湯のみを循環させて蒸気発生タンク１０内に残留している洗浄剤を洗い流す。   After stirring the inside of the steam generation tank 10 for a predetermined time, the pump 18 of the drain pipe 17 is operated to drain hot water in the steam generation tank 10. After draining, only the hot water not containing the cleaning agent is circulated in the circulation system 20 to wash away the cleaning agent remaining in the steam generation tank 10.

本例においては、仮設連絡管３３の先端３３ａが、蒸気発生タンク１０内に対して開口している。このように、連絡管３３の先端３３ａを蒸気吹き込み口２１からできるだけ離すことにより、蒸気吹き込み口２１や蒸気供給管１１に洗浄剤が付着しないようにされている。しかし、タンク洗浄後に、洗浄剤を含まないお湯を十分に循環させてこれらの部分を洗い流せば、仮設連絡管３３の先端３３ａが蒸気吹き込み口２１から近い位置にあっても問題ない。この場合、仮設連絡管２２を蒸気供給管１１の奥まで挿入する必要がなくなり、同管の取付が容易になる。また、蒸気供給管１１内の洗浄も行える。   In this example, the tip 33 a of the temporary connection pipe 33 is open to the inside of the steam generation tank 10. Thus, the cleaning agent is prevented from adhering to the steam blowing port 21 and the steam supply pipe 11 by separating the tip 33a of the communication tube 33 from the steam blowing port 21 as much as possible. However, there is no problem even if the tip 33a of the temporary connecting pipe 33 is located at a position close to the steam blowing port 21 by sufficiently circulating hot water not containing the cleaning agent after the tank cleaning to wash away these portions. In this case, it is not necessary to insert the temporary connecting pipe 22 to the back of the steam supply pipe 11, and the pipe can be easily attached. Further, the inside of the steam supply pipe 11 can be cleaned.

図２は、本発明の他の実施の形態に係るスチームコンベクションオーブンの構造の一例を模式的に示す図である。
この例においては、蒸気発生タンク１０の洗浄方法とともに、調理庫２０の洗浄方法も説明する。このスチームコンベクションオーブン１Ａも、図１のオーブンと同様に、蒸気を発生させるタンク１０と、調理される食品が収容される調理庫２０とを備え、タンク１０と、調理庫２０との間には蒸気供給管１１が設けられている。さらに、同オーブン１には、蒸気発生タンクのお湯を循環させる循環系統５０と、同循環系統に洗浄剤を投入する洗浄剤投入系統６０と、が備えられている。蒸気発生タンク１０、調理庫２０は、図１のオーブンの各々と同じ作用・構成を有するので、図１と同じ符号を付し説明を省略する。 FIG. 2 is a diagram schematically showing an example of the structure of a steam convection oven according to another embodiment of the present invention.
In this example, the cleaning method of the cooking chamber 20 will be described together with the cleaning method of the steam generation tank 10. The steam convection oven 1 </ b> A is also provided with a tank 10 that generates steam and a cooking chamber 20 in which food to be cooked is stored, like the oven of FIG. 1, and between the tank 10 and the cooking chamber 20. A steam supply pipe 11 is provided. Further, the oven 1 is provided with a circulation system 50 for circulating hot water in the steam generation tank, and a cleaning agent charging system 60 for supplying a cleaning agent to the circulation system. Since the steam generation tank 10 and the cooking cabinet 20 have the same operation and configuration as each of the ovens in FIG. 1, the same reference numerals as those in FIG.

循環系統５０と洗浄剤投入系統６０について説明する。
循環系統５０は、蒸気発生タンク１０の底部付近と、調理庫２０の上壁に設けられた吐湯口２２とを接続する庫内洗浄管路５１と、同庫内洗浄管路５１の途中から蒸気供給管路１１に分岐した分岐管路５３とを有する。庫内洗浄管路５１の途中には、ポンプ５２が設けられており、ポンプ５２の駆動により、蒸気発生タンク１０内の液体が庫内洗浄管路５１にくみ上げられる。庫内洗浄管路５１と分岐管路５３との交点には三方弁５４が設けられている。ポンプ５２を稼働し、三方弁５４の、分岐管路側の弁５４ｃを閉じて他の弁５４ａ、５４ｂを開くと、蒸気発生タンク１０内の液体は庫内洗浄管路５１を通って調理庫２０の吐湯口２２に送られる。一方、三方弁５４の、調理庫側の弁５４ｂを閉じて他の弁５４ａ、５４ｃを開くと、蒸気発生タンク１０内の液体は庫内洗浄管路５１から分岐管路５３を通って、蒸気発生管路１１に入り、蒸気発生タンク１０に戻される。
なお、図２では、分岐管路５３が、蒸気供給管路１１の上下方向に延びる部分に連続するように接続しているが、水平方向に延びる部分に接続していてもよい。水平方向に延びる部分に接続する場合は、タンク洗浄時に、蒸気吹き込み口２１をキャップなどで塞いでおく必要がある。 The circulation system 50 and the cleaning agent charging system 60 will be described.
The circulation system 50 includes steam in the cabinet cleaning pipe 51 that connects the vicinity of the bottom of the steam generation tank 10 and the spout 22 provided on the upper wall of the cooking cabinet 20, and steam in the middle of the cabinet cleaning pipeline 51. A branch line 53 branched into the supply line 11; A pump 52 is provided in the middle of the internal cleaning pipeline 51, and the liquid in the steam generation tank 10 is pumped up into the internal cleaning pipeline 51 by driving the pump 52. A three-way valve 54 is provided at the intersection of the internal cleaning pipe 51 and the branch pipe 53. When the pump 52 is operated and the valve 54c on the branch line side of the three-way valve 54 is closed and the other valves 54a and 54b are opened, the liquid in the steam generation tank 10 passes through the internal cleaning pipe 51 and the cooking chamber 20. To the spout 22. On the other hand, when the cooker side valve 54b of the three-way valve 54 is closed and the other valves 54a and 54c are opened, the liquid in the steam generation tank 10 passes through the branch cleaning line 51 through the branch line 53, It enters the generation line 11 and returns to the steam generation tank 10.
In FIG. 2, the branch conduit 53 is connected so as to be continuous with a portion extending in the vertical direction of the steam supply conduit 11, but may be connected to a portion extending in the horizontal direction. When connecting to a portion extending in the horizontal direction, it is necessary to block the steam blowing port 21 with a cap or the like during tank cleaning.

洗浄剤投入系統６０は、調理庫内を洗浄するための洗浄剤（例えば、アルカリ洗剤）を貯留する庫内洗浄剤タンク６１と、同タンク６１と庫内洗浄管路５１とを接続する庫内洗浄剤供給管路６３を有する。庫内洗浄剤供給管路６３の途中にはポンプ６４が設けられている。
さらに、同系統６０は、蒸気発生タンク１０を洗浄する洗浄剤（例えば、クエン酸など）を貯留するタンク洗浄剤タンク６５と、同タンク６５と庫内洗浄剤供給管路６３とを接続するタンク洗浄剤供給管路６７とを有する。タンク洗浄剤供給管路６７と、庫内洗浄剤供給管路６３との交点には、三方弁６８が設けられている。 The cleaning agent charging system 60 includes a cleaning agent tank 61 for storing a cleaning agent (for example, an alkaline detergent) for cleaning the inside of the cooking chamber, and an interior connecting the tank 61 and the cleaning chamber 51. A cleaning agent supply pipe 63 is provided. A pump 64 is provided in the middle of the internal cleaning agent supply pipe 63.
Furthermore, the same system 60 includes a tank cleaning agent tank 65 that stores a cleaning agent (for example, citric acid) that cleans the steam generation tank 10, and a tank that connects the tank 65 and the internal cleaning agent supply pipe 63. And a cleaning agent supply pipe 67. A three-way valve 68 is provided at the intersection of the tank cleaning agent supply line 67 and the internal cleaning agent supply line 63.

庫内洗浄方法の一例を説明する。
初めに、循環系統５０において、庫内洗浄管路５１と分岐管路５３との交点に設けられた三方弁５４の、分岐管路側の弁５４ｃを閉じて他の弁５４ａ、５４ｂを開いておく。そして、調理庫２０の吐湯口２２に、水圧回転ノズル２５を取り付けておく。さらに、洗浄剤投入系統６０において、庫内洗浄剤供給管路６３とタンク洗浄剤供給管路６７との交点に設けられた三方弁６８の、タンク洗浄剤供給管路側の弁６８ｃの弁を閉じて他の弁６８ａ、６８ｂを開いておく。 An example of the interior cleaning method will be described.
First, in the circulation system 50, the branch line side valve 54c of the three-way valve 54 provided at the intersection of the internal cleaning line 51 and the branch line 53 is closed and the other valves 54a and 54b are opened. . Then, a water pressure rotating nozzle 25 is attached to the hot water outlet 22 of the cooking chamber 20. Further, in the cleaning agent supply system 60, the valve 68c on the tank cleaning agent supply line side of the three-way valve 68 provided at the intersection of the internal cleaning agent supply line 63 and the tank cleaning agent supply line 67 is closed. The other valves 68a and 68b are opened.

汚れがほとんど無い場合は、蒸気発生タンク１０内の水道水を加熱した後、ポンプ５２を稼働する。すると、蒸気発生タンク１０内のお湯は、庫内洗浄管路５１を通って吐湯口２２へ送られ、水圧回転ノズル２５から庫内に噴射される。お湯の温度を比較的高温（例えば８０℃）とすることにより、軽度な油汚れを洗い流すことができる。噴射されたお湯は、調理庫２０の排水管２７から排水される。   When there is almost no dirt, after heating the tap water in the steam generation tank 10, the pump 52 is operated. Then, the hot water in the steam generation tank 10 is sent to the hot water outlet 22 through the internal cleaning pipe 51 and is injected into the internal combustion chamber from the water pressure rotating nozzle 25. By setting the temperature of the hot water to a relatively high temperature (for example, 80 ° C.), mild oil stains can be washed away. The injected hot water is drained from the drain pipe 27 of the cooking cabinet 20.

汚れがひどい場合は、庫内洗浄剤供給管路６３のポンプ６４を一定時間稼働して、庫内洗浄剤タンク６１から庫内洗浄剤供給管路６３に洗浄剤を送る。洗浄剤は、庫内洗浄管路５１を流れるお湯に混合され、洗浄剤を含んだお湯が吐湯口２２からノズル２５を介して庫内に噴射される。その後、蒸気発生タンク１０内の水を加熱して蒸気を発生させる。発生した蒸気は蒸気供給管１１を通って吹き出し口２１から庫内に吹き出す。このように、庫内には洗浄水が噴射されるとともに蒸気が吹き出され、油汚れを分解させる。一定時間経過して汚れが壁面から浮きあがった後、蒸気発生タンク１０内のお湯のみを循環系統５０を通して庫内に噴出して、壁面を十分に洗い流す。
洗浄剤の投入量や投入タイミングは、汚れの状態によって適宜調整する。 When the dirt is severe, the pump 64 of the internal cleaning agent supply line 63 is operated for a certain time, and the cleaning agent is sent from the internal cleaning agent tank 61 to the internal cleaning agent supply line 63. The cleaning agent is mixed with hot water flowing through the internal cleaning pipe 51, and hot water containing the cleaning agent is injected from the hot water outlet 22 into the storage through the nozzle 25. Thereafter, the water in the steam generation tank 10 is heated to generate steam. The generated steam blows out from the outlet 21 through the steam supply pipe 11 into the warehouse. In this way, cleaning water is jetted into the chamber and steam is blown out to decompose oil stains. After a certain period of time has passed, the dirt floats up from the wall surface, and then only the hot water in the steam generation tank 10 is ejected into the cabinet through the circulation system 50 to sufficiently wash the wall surface.
The amount and timing of supplying the cleaning agent are appropriately adjusted depending on the state of the dirt.

次に、蒸気発生タンク１０の洗浄方法の一例を説明する。
初めに、循環系統５０において、庫内洗浄管路５１と分岐管路５３との交点に設けられた三方弁５４の、調理庫側の弁５４ｂを閉じて他の弁５４ａ、５４ｃを開いておく。そして、洗浄剤投入系統６０において、庫内洗浄剤供給管路６３とタンク洗浄剤供給管路６７との交点に設けられた三方弁６８の、庫内洗浄剤タンクの弁６８ａを閉じて他の弁６８ｂ、６８ｃを開いておく。 Next, an example of a method for cleaning the steam generation tank 10 will be described.
First, in the circulation system 50, the cooking chamber side valve 54b of the three-way valve 54 provided at the intersection of the internal cleaning pipe 51 and the branch pipe 53 is closed and the other valves 54a and 54c are opened. . In the cleaning agent supply system 60, the internal cleaning agent tank valve 68a of the three-way valve 68 provided at the intersection of the internal cleaning agent supply line 63 and the tank cleaning agent supply line 67 is closed, and the other The valves 68b and 68c are kept open.

次に、蒸気発生タンク１０内の水道水を所定の温度（例えば、８０℃）に加熱する。所定の温度に加熱後、庫内洗浄管路５１のポンプ５２を稼働して、蒸気発生タンク１０内のお湯を庫内洗浄管路５１にくみ上げる。お湯は、庫内洗浄管路５１から三方弁５４を経て分岐管路５３に入り、蒸気供給管路１１を通って蒸気発生タンク１０に戻り、これによりお湯が循環する。お湯が循環し始めた後、洗浄剤供給管路６３のポンプ６４を作動する。すると、タンク洗浄剤タンク６５内の洗浄剤が、タンク洗浄剤供給管路６７から三方弁６８を経て洗浄剤投入管路６３にくみ上げられ、同管路６３から庫内洗浄管路５１に投入される。すると、洗浄剤が含まれたお湯が、庫内洗浄管路５１−分岐管路５３−蒸気供給管路１１−蒸気発生タンク１０を循環するとともに、蒸気発生タンク１０内のお湯が攪拌されることになる。これにより、蒸気発生タンク１０が洗浄される。洗浄後は、前述と同様に、洗浄剤の投入を停止して、十分にすすぎを行う。
なお、洗浄中、調理庫２０の蒸気発生口２１は、キャップなどで塞いでおくことが好ましい。 Next, the tap water in the steam generation tank 10 is heated to a predetermined temperature (for example, 80 ° C.). After heating to a predetermined temperature, the pump 52 of the internal cleaning line 51 is operated to draw hot water in the steam generation tank 10 into the internal cleaning line 51. Hot water enters the branch line 53 from the internal cleaning line 51 via the three-way valve 54, returns to the steam generation tank 10 through the steam supply line 11, and thereby the hot water circulates. After hot water begins to circulate, the pump 64 of the cleaning agent supply line 63 is operated. Then, the cleaning agent in the tank cleaning agent tank 65 is pumped up from the tank cleaning agent supply pipe 67 through the three-way valve 68 to the cleaning agent supply pipe 63 and is supplied from the pipe 63 to the internal cleaning pipe 51. The Then, the hot water containing the cleaning agent circulates in the internal cleaning pipe 51 -the branch pipe 53 -the steam supply pipe 11 -the steam generation tank 10 and the hot water in the steam generation tank 10 is stirred. become. Thereby, the steam generation tank 10 is washed. After the cleaning, as described above, the cleaning agent is stopped and the rinse is sufficiently performed.
In addition, it is preferable to block | close the steam generation opening 21 of the cooking chamber 20 with a cap etc. during washing | cleaning.

また、調理庫２０に吐湯口２２が設けられていない場合は、庫内洗浄管路５１を直接蒸気供給管路１１に接続して、庫内洗浄管路５１−蒸気供給管路１１−蒸気発生タンク１０からなる循環系統を構成する。   Moreover, when the hot water outlet 22 is not provided in the cooking chamber 20, the internal cleaning line 51 is directly connected to the steam supply line 11, and the internal cleaning line 51-steam supply line 11-steam generation. A circulation system composed of the tank 10 is configured.

本発明の実施の形態に係るスチームコンベクションオーブンの構造を模式的に示す図である。It is a figure which shows typically the structure of the steam convection oven which concerns on embodiment of this invention. 本発明の他の実施の形態に係るスチームコンベクションオーブンの構造の一例を模式的に示す図である。It is a figure which shows typically an example of the structure of the steam convection oven which concerns on other embodiment of this invention.

符号の説明Explanation of symbols

１ スチームコンベクションオーブン １０ 蒸気発生タンク
１１ 蒸気供給管 １３ 水道水供給管
１４ 開閉弁 １５ ヒータ
１７ 排水管 １８ ポンプ
２０ 調理庫 ２１ 蒸気吹き出し口
２２ 吐湯口 ２５ 水圧回転ノズル
２７ 排水管 ３０ 循環系統
３１ 庫内洗浄管路 ３２ ポンプ
３３ 仮設連絡管 ３５ シール
４０ 洗浄剤投入系統 ４１ 洗浄剤タンク
４３ 洗浄剤投入管路 ４４ ポンプ
５０ 循環系統 ５１ 庫内洗浄管路
５２ ポンプ ５３ 分岐管路
５４ 三方弁 ６０ 洗浄剤投入系統
６１ 庫内洗浄剤タンク ６３ 庫内洗浄剤供給管路
６４ ポンプ ６５ タンク洗浄剤タンク
６７ タンク洗浄剤供給管路 ６８ 三方弁 DESCRIPTION OF SYMBOLS 1 Steam convection oven 10 Steam generating tank 11 Steam supply pipe 13 Tap water supply pipe 14 On-off valve 15 Heater 17 Drain pipe 18 Pump 20 Cooking chamber 21 Steam outlet 22 Hot water outlet 25 Water pressure rotary nozzle 27 Drain pipe 30 Circulation system 31 Inside the chamber Cleaning line 32 Pump 33 Temporary connecting pipe 35 Seal 40 Cleaning agent input system 41 Cleaning agent tank 43 Cleaning agent input line 44 Pump 50 Circulation system 51 Internal cleaning line 52 Pump 53 Branch line 54 Three-way valve 60 Cleaning agent input System 61 Internal cleaning agent tank 63 Internal cleaning agent supply line 64 Pump 65 Tank cleaning agent tank 67 Tank cleaning agent supply line 68 Three-way valve

Claims (5)

蒸気発生タンク及びその発生した蒸気が送られる食品調理庫を備えるスチームコンベクションオーブンであって、
前記蒸気発生タンクのお湯を循環させる循環系統と、
該循環系統に洗浄剤を投入する洗浄剤投入系統と、
をさらに備えることを特徴とするスチームコンベクションオーブン。 A steam convection oven comprising a steam generation tank and a food cooking chamber to which the generated steam is sent,
A circulation system for circulating hot water in the steam generation tank;
A cleaning agent input system for supplying the cleaning agent to the circulation system;
A steam convection oven characterized by further comprising: 前記循環系統が、
前記蒸気発生タンクのお湯を前記調理庫の庫内上部の吐湯口に送る庫内洗浄管路と、
前記蒸気発生タンクから前記庫内に蒸気を吹き込む蒸気吹き込み口と前記吐湯口との間を繋ぐ仮設連結管と、
を有することを特徴とする請求項１記載のスチームコンベクションオーブン。 The circulation system is
An in-chamber cleaning line for sending hot water from the steam generation tank to a spout at the upper part of the cooking chamber;
A temporary connecting pipe that connects between the steam inlet and the hot water outlet for blowing steam from the steam generation tank into the warehouse;
The steam convection oven according to claim 1, comprising: 前記循環系統が、
前記蒸気発生タンクの底から出て該タンクの上部に入る管路を有することを特徴とする請求項１記載のスチームコンベクションオーブン。 The circulation system is
The steam convection oven according to claim 1, further comprising a conduit that exits from a bottom of the steam generation tank and enters an upper portion of the tank. 前記循環系統が、
前記蒸気発生タンクのお湯を前記調理庫の庫内上部の吐湯口に送る庫内洗浄管路と、
該庫内洗浄管路から前記蒸気発生タンクへ行く分岐管路と、
前記庫内洗浄管路の前記分岐管路への分岐部に設けられた切換え弁と、
を備えることを特徴とする請求項１記載のスチームコンベクションオーブン。 The circulation system is
An in-chamber cleaning line for sending hot water from the steam generation tank to a spout at the upper part of the cooking chamber;
A branch line going from the internal cleaning line to the steam generation tank;
A switching valve provided at a branch portion of the internal cleaning pipeline to the branch pipeline;
The steam convection oven according to claim 1, comprising: 蒸気発生タンク及びその発生した蒸気が送られる食品調理庫を備えるスチームコンベクションオーブンの洗浄方法であって、
前記蒸気発生タンクのお湯を循環させる循環系統に、洗浄剤を投入し、
該循環系統に洗浄剤を含んだお湯を循環させることにより、前記蒸気発生タンク内で洗浄剤を含んだお湯を攪拌し、該蒸気発生タンクを洗浄することを特徴とするスチームコンベクションオーブンの洗浄方法。 A steam convection oven cleaning method comprising a steam generation tank and a food cooking chamber to which the generated steam is sent,
Into the circulation system that circulates the hot water in the steam generation tank,
A method for cleaning a steam convection oven, wherein hot water containing a cleaning agent is circulated in the circulation system so that the hot water containing a cleaning agent is stirred in the steam generation tank and the steam generation tank is cleaned. .
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