JP2012147686A - Liquid food-sterilization device and method for producing liquid food - Google Patents
Liquid food-sterilization device and method for producing liquid food Download PDFInfo
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Abstract
Description
本発明は、高温の蒸気で満たされた空間に、液体食品を注入することにより、上記液体食品の殺菌を行う、液体食品の殺菌装置であって、特に繊維質（以下パルプと称する）を含有する液体食品の加熱殺菌を行う殺菌装置に関する。 The present invention is a liquid food sterilization apparatus for sterilizing the liquid food by injecting the liquid food into a space filled with high-temperature steam, particularly containing fiber (hereinafter referred to as pulp). The present invention relates to a sterilization apparatus for performing heat sterilization of liquid food.
液体食品の製造プラントにおいて、上記液体食品を加熱殺菌する殺菌装置は、液体食品の品質管理上、非常に重要な装置である。
液体食品の加熱殺菌の手段としては、プレート式熱交換器、シェル＆チューブタイプの熱交換器に代表されるように、熱媒と液体食品とが直接接触せずに、金属等の熱媒伝導体を介して、熱媒の熱を液体食品に伝導して加熱する、所謂間接加熱式加熱殺菌装置と、高温の蒸気に、殺菌対象の液体食品を直接流し込み、混合することによって、液体食品を加熱殺菌する所謂直接加熱式殺菌装置に大別される。
In a liquid food production plant, the sterilization apparatus for heating and sterilizing the liquid food is a very important apparatus for quality control of the liquid food.
As a means of heat sterilization of liquid foods, as represented by plate-type heat exchangers and shell & tube type heat exchangers, heat medium conduction such as metal without direct contact between the heat medium and liquid food The so-called indirect heating type heat sterilizer that conducts the heat of the heat transfer medium to the liquid food and heats it through the body, and the liquid food to be sterilized is poured directly into the high-temperature steam and mixed, thereby mixing the liquid food. It is roughly classified into so-called direct heating type sterilizers for heat sterilization.
図３は、液体食品の製造プラント（図３には図示せず）に組み込まれた、直接加熱式殺菌装置７０の構成を示す軸方向断面図である。
図３に示すように、直接加熱式殺菌装置７０は、液体食品７１が流通しうる中空円柱形の殺菌装置本体部７２と、上記殺菌装置本体部７２の上端部内方に配設され、殺菌対象の液体食品７１を上記殺菌装置本体部７２内に供給する液体食品供給部７３とを備えている。
FIG. 3 is an axial sectional view showing a configuration of a direct heating sterilizer 70 incorporated in a liquid food production plant (not shown in FIG. 3).
As shown in FIG. 3, the direct heating sterilizer 70 is disposed inside the hollow cylindrical sterilizer main body 72 through which the liquid food 71 can circulate and the upper end of the sterilizer main body 72, and is subject to sterilization. A liquid food supply unit 73 for supplying the liquid food 71 into the sterilizer main body 72.
上記液体食品供給部７３は、上記殺菌装置本体部７２の上端部内方に配置され、前工程から送出された殺菌前の液体食品を殺菌装置本体部７２に注入する液体食品注入管路部７４と、上記液体食品注入管路部７４の下方に配置され、上記液体食品注入管路部７４から供給される液体食品７１を、所定量貯留すると共に、上記殺菌装置本体部７２内に送出しうる容器状の貯留送出部７５とを備えている。 The liquid food supply unit 73 is arranged inside the upper end of the sterilizer main body 72, and a liquid food injection conduit 74 for injecting the liquid food before sterilization sent from the previous process into the sterilizer main body 72; A container which is disposed below the liquid food injection conduit portion 74 and stores a predetermined amount of liquid food 71 supplied from the liquid food injection conduit portion 74 and can be delivered into the sterilizer main body 72. The storage and delivery part 75 of a shape is provided.
また、上記液体食品注入管路部７４は、細円筒形に形成され、上記殺菌装置本体部７２の上面部７７を貫通して配設されている。
また、上記殺菌装置本体部７２の上端部近傍には、上記殺菌装置本体部７２の内部の空気を排出する空気排出用スリーブ部８６が上記殺菌装置本体部７２の径方向外方に突出して配設されている。
The liquid food injection conduit 74 is formed in a thin cylindrical shape and is disposed through the upper surface 77 of the sterilizer main body 72.
Further, in the vicinity of the upper end portion of the sterilizer main body 72, an air discharge sleeve 86 for discharging the air inside the sterilizer main body 72 protrudes radially outward of the sterilizer main body 72. It is installed.
図４は、図３の液体食品供給部７３の拡大図である。
図４に示すように、上記貯留送出部７５は、円形の底面部７６と、上記底面部７６の外周縁部に延設されると共に、上方に向かって次第に拡開して形成された立ち上がり部７８とから形成され、上記立ち上がり部７８の上端部に形成されたフランジ部７９と上記殺菌装置本体部７２の内壁上端部に設けられた段部８０とが互いに係合することによって、上記殺菌装置本体部７２の上端部内方に固定されている。
FIG. 4 is an enlarged view of the liquid food supply unit 73 of FIG.
As shown in FIG. 4, the storage and delivery part 75 has a circular bottom part 76 and a rising part formed to extend to the outer peripheral edge of the bottom part 76 and gradually expand upward. 78, the flange portion 79 formed at the upper end portion of the rising portion 78 and the step portion 80 provided at the upper end portion of the inner wall of the sterilization device main body 72 are engaged with each other, whereby the sterilization device. It is fixed inside the upper end of the main body 72.
また、図４に示すように、上記貯留送出部７５の底面部７６には、厚さ方向に貫通する複数の送出孔部８１が上記底面部７６の周方向に沿って所定間隔寸法毎に設けられ、上記送出孔部８１の上端部には、上端に向かって次第に拡開する漏斗状のテーパー部８２が形成されている。 Further, as shown in FIG. 4, a plurality of delivery hole portions 81 penetrating in the thickness direction are provided in the bottom surface portion 76 of the storage and delivery portion 75 at predetermined intervals along the circumferential direction of the bottom surface portion 76. In addition, a funnel-shaped tapered portion 82 is formed at the upper end portion of the delivery hole portion 81 so as to gradually expand toward the upper end.
また、図３に示すように、上記殺菌装置本体部７２の下端部近傍には、上記殺菌装置本体部７２の内部に高温の蒸気を送入する加熱蒸気送入部８３が径方向外方に突出して形成されると共に、上記殺菌装置本体部７２の下端部には、殺菌後の液体食品７１を次工程に搬送する、殺菌後液体食品送出部８４が配設されている。 In addition, as shown in FIG. 3, in the vicinity of the lower end portion of the sterilizer main body 72, a heating steam inlet 83 for feeding high temperature steam into the sterilizer main body 72 is provided radially outward. At the lower end of the sterilizing apparatus main body 72, a post-sterilized liquid food delivery unit 84 for conveying the sterilized liquid food 71 to the next process is disposed.
図３に示すように、上記液体食品供給部７３において、上記液体食品注入管路部７４から供給された液体食品７１は、上記貯留送出部７５内の空間８５に所定量が貯留され、上記液体食品７１の自重によって、上記送出孔部８１、８１．．から、上記殺菌装置本体部７２内に自由落下により送出される。 As shown in FIG. 3, in the liquid food supply unit 73, a predetermined amount of the liquid food 71 supplied from the liquid food injection conduit unit 74 is stored in a space 85 in the storage and delivery unit 75, and the liquid Due to the weight of the food 71, the delivery holes 81, 81. . Then, it is sent into the sterilizer main body 72 by free fall.
上記送出孔部８１、８１．．から送出された液体食品７１は、予め上記加熱蒸気送入部８３から送入した高温の蒸気で満たされた上記殺菌装置本体部７２内に落下する過程において、高温蒸気と接触することによって加熱殺菌され、殺菌後の液体食品７１は殺菌後液体食品送出部８４を介して、冷却、減圧工程等の次工程（図３には図示せず）に搬送される。 The delivery holes 81, 81. . The liquid food 71 delivered from the heat sterilizer is brought into contact with the high-temperature steam in the process of dropping into the sterilizer main body 72 filled with the high-temperature steam previously fed from the heated steam feed section 83, thereby being heat sterilized. Then, the sterilized liquid food 71 is conveyed to the next process (not shown in FIG. 3) such as a cooling and decompression process via the sterilized liquid food delivery unit 84.
直接加熱式殺菌装置は、間接加熱式殺菌装置と比較して、液体食品を約1 秒未満という極めて短時間で高温に加熱することができることから、液体食品の風味等を損なうことなく、確実に、且つ短時間で加熱殺菌処理が完了するという利点を有している。 Compared with indirect heating sterilizers, direct heating sterilizers can heat liquid foods to a high temperature in an extremely short time of less than about 1 second, ensuring that the flavor of liquid foods is not impaired. And, it has the advantage that the heat sterilization process is completed in a short time.
しかしながら、図４に示すように上記貯留送出部７５の底面部７６は平滑に形成されていることから、上記液体食品注入管路部７４から供給された液体食品７１は上記底面部７６に対して垂直に衝突するため、液体食品７１の流速が急激に減じられ、上記貯留送出部７５の空間８５内に貯留された液体食品７１には、不均一な対流が発生する。
加えて、上記送出孔部８１、８１．．のテーパー部８２、８２においては、更に流速が減じられるため、特に、液体食品７１がパルプを含有する場合には、十分な対流が起こらず、結果的に上記テーパー部８２、８２において上記送出孔部８１、８１．．を塞ぐようにパルプが沈殿してしまうことから、上記送出孔部８１、８１．．への液体食品７１のスムーズな導入が困難となり、殺菌装置７０の稼動時間の経過と共に、上記送出孔部８１、８１．．に目詰まりが発生する。
However, as shown in FIG. 4, since the bottom surface portion 76 of the storage and delivery portion 75 is formed smoothly, the liquid food 71 supplied from the liquid food injection pipe portion 74 is not in the bottom surface portion 76. Since the liquid food 71 collides vertically, the flow rate of the liquid food 71 is drastically reduced, and non-uniform convection occurs in the liquid food 71 stored in the space 85 of the storage and delivery unit 75.
In addition, the delivery holes 81, 81. . In the taper portions 82 and 82, the flow velocity is further reduced. Therefore, particularly when the liquid food 71 contains pulp, sufficient convection does not occur. As a result, the taper portions 82 and 82 have the delivery holes. Part 81, 81. . Since the pulp settles so as to block the feed hole portions 81, 81. . As a result, it becomes difficult to smoothly introduce the liquid food 71 into the sterilizer 70, and as the operation time of the sterilizer 70 elapses, the delivery holes 81, 81. . Clogging occurs.
これにより、液体食品７１の殺菌装置本体部７２への送出が阻害され、上記貯留送出部７５内の空間８５が上記液体食品７１で満たされると、それ以上液体食品７１の注入が行えない状態となり、加熱殺菌プラントの運転を停止して清掃作業が必要となる。また、清掃を行わずに放置した場合は、殺菌装置７０の故障要因にもなり得る。
以上のように、図３に示す従来の殺菌装置１０にあっては、現状連続稼働が可能な時間は１０時間以内に留まっており、この時間を越えた場合は、都度分解清掃が必要となるため、液体食品７１の加熱殺菌効率が低下すると共に、清掃等に要するメンテナンスコストが増大するという不具合を有していた。
As a result, the delivery of the liquid food 71 to the sterilization apparatus main body 72 is inhibited, and when the space 85 in the reservoir delivery section 75 is filled with the liquid food 71, the liquid food 71 cannot be injected any more. Then, the operation of the heat sterilization plant is stopped and cleaning work is required. Moreover, when it is left without cleaning, it may be a cause of failure of the sterilizer 70.
As described above, in the conventional sterilization apparatus 10 shown in FIG. 3, the current continuous operation time remains within 10 hours. When this time is exceeded, disassembly and cleaning are required each time. For this reason, the heat sterilization efficiency of the liquid food 71 is reduced, and the maintenance cost required for cleaning and the like is increased.
本発明の解決する課題は、パルプを含有する液体食品であっても、貯留送出部の目詰まりが発生し難く、長時間の連続運転が可能な液体食品の殺菌装置を提供することにある。 The problem to be solved by the present invention is to provide a liquid food sterilization apparatus that can prevent clogging of a storage and delivery section and can be operated continuously for a long time even for liquid food containing pulp.
上記課題を解決するために、請求項１に記載した発明に係る液体食品の殺菌装置は、液体食品を流通させて殺菌する殺菌装置本体部と、殺菌前の液体食品を上記殺菌装置本体部内に供給する液体食品供給部とを備える液体食品の殺菌装置であって、上記殺菌装置本体部は、上記殺菌装置本体部内に高温の蒸気を送入する加熱蒸気送入部を備えると共に、上記液体食品供給部は、上記殺菌装置本体部の上端部内方に配置され、前工程から送出された殺菌前の液体食品を殺菌装置本体部に注入する液体食品注入管路部と、上記液体食品注入管路部の下方に配置され、上記液体食品注入管路部から供給される液体食品を、所定量貯留すると共に、上記殺菌装置本体部内に送出しうる容器状の貯留送出部とを備え、上記貯留送出部の底面部には、上記殺菌装置本体部内に上記液体食品を送出する複数の送出孔部が形成されると共に、上記液体食品注入管路部の下端部と対向する位置において、上記液体食品注入管路部に向かって突出する錐形の突部が形成されていることを特徴とする。 In order to solve the above-mentioned problems, a liquid food sterilization apparatus according to the invention described in claim 1 includes a sterilization apparatus main body for circulating and sterilizing liquid food, and a liquid food before sterilization in the sterilization apparatus main body. A sterilizer for liquid food comprising a liquid food supply unit for supplying, wherein the sterilizer main body includes a heated steam feed section for feeding high-temperature steam into the sterilizer main body, and the liquid food The supply unit is disposed inside the upper end of the sterilizer main body, and injects liquid food before sterilization sent from the previous process into the sterilizer main body, and the liquid food injection conduit. A container-like storage / delivery part that is disposed below the part and stores a predetermined amount of liquid food supplied from the liquid food injection pipe part and can be delivered into the sterilization apparatus main body part. On the bottom of the A plurality of delivery holes for delivering the liquid food are formed in the fungus device main body, and project toward the liquid food injection conduit at a position facing the lower end of the liquid food injection conduit. Conical protrusions are formed.
従って、請求項１の発明にあっては、液体食品供給部の貯留送出部に注入された液体食品は、上記突部の外面に沿って径方向外方に向かって拡がり乍ら滑り落ちることから、上記液体食品注入管路部から注入された液体食品の流速が減じることがない。
更に、上記貯留送出部に所定量が貯留された場合、貯留された液体食品には、常に対流が発生する。
Therefore, in the invention of claim 1, the liquid food injected into the storage and delivery part of the liquid food supply part spreads radially outward along the outer surface of the protrusion, and slides down. The flow rate of the liquid food injected from the liquid food injection conduit is not reduced.
Further, when a predetermined amount is stored in the storage and delivery unit, convection always occurs in the stored liquid food.
また、請求項２に記載した発明に係る液体食品の殺菌装置は、上記液体食品注入管路部は細円筒形に形成され、上記突部は円錐形に形成されると共に、上記突部の頂点は、上記液体食品注入管路部の中心軸の直下に配置されることを特徴とする。 In the liquid food sterilization apparatus according to the second aspect of the present invention, the liquid food injection conduit is formed in a thin cylindrical shape, the protrusion is formed in a conical shape, and the apex of the protrusion. Is arranged directly below the central axis of the liquid food injection conduit.
従って、上記液体食品は、流速を保持しつつ、上記貯留送出部の底面部に均等に拡がり易くなり、貯留された液体食品に発生する対流の速度も全域で均等になる。 Therefore, the liquid food easily spreads evenly on the bottom surface of the storage and delivery unit while maintaining the flow rate, and the speed of convection generated in the stored liquid food is also uniform over the entire area.
また、請求項３に記載した発明に係る液体食品の殺菌装置は、上記送出孔部は、上記突部の基端部の外周に沿って、夫々所定間隔寸法離間して複数配置されていることを特徴とする。 Further, in the liquid food sterilization apparatus according to the invention described in claim 3, a plurality of the delivery hole portions are arranged along the outer periphery of the base end portion of the protrusion, each being spaced apart by a predetermined distance. It is characterized by.
従って、夫々の送出孔部にかかる液圧がより均等になる。 Therefore, the hydraulic pressure applied to each delivery hole is more uniform.
また、請求項４に記載した発明に係る液体食品の殺菌装置は、上記貯留送出部はフッ素系樹脂で形成されていることを特徴とする。 The liquid food sterilization apparatus according to the invention described in claim 4 is characterized in that the storage and delivery section is formed of a fluorine-based resin.
また、請求項５に記載した発明に係る液体食品の製造方法は、上記請求項１から４何れか１項の殺菌装置を用いて殺菌を行う加熱殺菌工程を備えることを特徴とする。
また、請求項６に記載した発明に係る液体食品の製造方法は、上記液体食品は、１０乃至３５の範囲のスラッジボリューム値を有することを特徴とする。
また、請求項７に記載した発明に係る液体食品の製造方法は、上記液体食品は、野菜汁、果実汁、若しくはその混合物を、容量比において５０％以上を含むことを特徴とする。
従って、パルプ入りの液体食品であっても、迅速且つ確実に加熱殺菌処理を行うことができる。
Moreover, the manufacturing method of the liquid food based on the invention described in Claim 5 is provided with the heat sterilization process which sterilizes using the sterilizer of any one of the said Claim 1 to 4.
According to a sixth aspect of the present invention, there is provided a method for producing a liquid food product, wherein the liquid food product has a sludge volume value in a range of 10 to 35.
The method for producing a liquid food according to the invention described in claim 7 is characterized in that the liquid food contains vegetable juice, fruit juice, or a mixture thereof in a volume ratio of 50% or more.
Therefore, even if it is a liquid food containing a pulp, it can heat-sterilize quickly and reliably.
請求項１の発明にあっては、液体食品を流通させて殺菌する殺菌装置本体部と、殺菌前の液体食品を上記殺菌装置本体部内に供給する液体食品供給部とを備える液体食品の殺菌装置であって、上記殺菌装置本体部は、上記殺菌装置本体部内に高温の蒸気を送入する加熱蒸気送入部を備えると共に、上記液体食品供給部は、上記殺菌装置本体部の上端部内方に配置され、前工程から送出された殺菌前の液体食品を殺菌装置本体部に注入する液体食品注入管路部と、上記液体食品注入管路部の下方に配置され、上記液体食品注入管路部から供給される液体食品を、所定量貯留すると共に、上記殺菌装置本体部内に送出しうる容器状の貯留送出部とを備え、上記貯留送出部の底面部には、上記殺菌装置本体部内に上記液体食品を送出する複数の送出孔部が形成されると共に、上記液体食品注入管路部の下端部と対向する位置において、上記液体食品注入管路部に向かって突出する錐形の突部が形成されていることから、貯留送出部に注入された液体食品は、上記突部の外面に沿って径方向外方に向かって拡がり乍ら滑り落ちることから、上記液体食品注入管路部から注入された液体食品の流速が減じることがなく、更に、上記貯留送出部に所定量が貯留された場合、貯留された液体食品には、常に上下方向に回転する対流が発生するため、対流により、液体食品が含有するパルプの繊維が激しく動くことから、パルプが上記貯留送出部の底面部に対流し難くなり、上記送出孔部にスムーズに送り込み易くなる。
従って、パルプを含有する液体食品であっても、貯留送出部の目詰まりが発生し難く、長時間の連続運転が可能な液体食品の殺菌装置を提供することができる。
In the invention of claim 1, a sterilizer for liquid food comprising a sterilizer main body for circulating and sterilizing liquid food, and a liquid food supply for supplying the liquid food before sterilization into the sterilizer main body. The sterilizer main body includes a heated steam inlet that feeds high-temperature steam into the sterilizer main body, and the liquid food supply unit is located inside the upper end of the sterilizer main body. A liquid food injection conduit portion that is arranged and injects the liquid food before sterilization sent from the previous process into the sterilizer main body, and the liquid food injection conduit portion disposed below the liquid food injection conduit portion. The liquid food supplied from the container is stored in a predetermined amount, and is provided with a container-like storage and delivery part that can be delivered into the sterilization apparatus main body part. Multiple delivery to deliver liquid food And a conical protrusion that protrudes toward the liquid food injection conduit at a position facing the lower end of the liquid food injection conduit. The liquid food injected into the portion spreads radially outward along the outer surface of the protrusion and slides down, so that the flow rate of the liquid food injected from the liquid food injection conduit may be reduced. Furthermore, when a predetermined amount is stored in the storage and delivery unit, convection that always rotates in the vertical direction is generated in the stored liquid food, so that the fibers of the pulp contained in the liquid food are intense due to convection. Since it moves, it becomes difficult for a pulp to convect to the bottom face part of the said storage delivery part, and it becomes easy to send smoothly into the said delivery hole part.
Therefore, even if it is a liquid food containing a pulp, the clogging of a storage and delivery part does not occur easily, and a liquid food sterilization device capable of continuous operation for a long time can be provided.
また、請求項２の発明にあっては、上記液体食品注入管路部は細円筒形に形成され、上記突部は円錐形に形成されると共に、上記突部の頂点は、上記液体食品注入管路部の中心軸の直下に配置されることから、上記貯留送出部の底面部おいて、流速を保持しつつ、均等に拡がり易くなり、貯留された液体食品に発生する対流の速度も全域で均等になるため、更に貯留送出部の目詰まりが発生し難くなる。 According to a second aspect of the present invention, the liquid food injection conduit is formed in a thin cylindrical shape, the protrusion is formed in a conical shape, and the apex of the protrusion is the liquid food injection Since it is arranged immediately below the central axis of the pipeline section, it is easy to spread evenly while maintaining the flow velocity at the bottom surface of the storage and delivery section, and the convection speed generated in the stored liquid food is also the entire area. Therefore, the clogging of the storage and delivery section is less likely to occur.
また、請求項３の発明にあっては、上記送出孔部は、上記突部の基端部の外周に沿って、夫々所定間隔寸法離間して複数配置されていることから、夫々の送出孔部にかかる液圧がより均等となり、各送出孔部から均一に液体食品が送出される。
従って、送出孔部の一部に液体食品が偏ることによる目詰まりが発生し難くなる。
Further, in the invention of claim 3, since the plurality of delivery holes are arranged at predetermined intervals along the outer periphery of the base end of the projection, each delivery hole is provided. The liquid pressure applied to the part becomes more uniform, and the liquid food is uniformly delivered from each delivery hole.
Therefore, clogging due to the liquid food being biased to a part of the delivery hole portion is less likely to occur.
また、請求項４の発明にあっては、上記貯留送出部がフッ素系樹脂で形成されているため、耐酸性、耐薬品性、及び焦げ付き防止性能に優れ、殺菌装置の耐久性能がより向上する。 In the invention of claim 4, since the storage and delivery part is formed of a fluorine-based resin, it is excellent in acid resistance, chemical resistance, and anti-burning performance, and the durability of the sterilizer is further improved. .
また、請求項５から７の発明にあっては、液体食品がパルプを含有する場合であっても、迅速且つ確実に加熱殺菌処理が行われ、高品質の液体食品を効率的に製造することができる。 Moreover, in invention of Claim 5-7, even if it is a case where liquid food contains a pulp, heat sterilization processing is performed rapidly and reliably, and high quality liquid food is manufactured efficiently. Can do.
本発明を実施するための形態について、添付図面を用いて以下説明する。
図１に示すように、本実施例に係る液体食品の殺菌装置１０は、液体食品１１を流通させて殺菌する殺菌装置本体部１２と、殺菌前の液体食品１１を上記殺菌装置本体部１２内に供給する液体食品供給部１３とを備えている。
上記殺菌装置本体部１２は、上記殺菌装置本体部１２内に高温の蒸気を送入する加熱蒸気送入部１４を備えると共に、上記液体食品供給部１３は、上記殺菌装置本体部１２の上端部内方に配設され、前工程から送出された殺菌前の液体食品１１を上記殺菌装置本体部１２に注入する液体食品注入管路部１５と、上記液体食品注入管路部１５の下方に配置され、細円筒形に形成された上記液体食品注入管路部１５から供給される液体食品１１を、所定量貯留すると共に、上記殺菌装置本体部１２内に送出しうる、フッ素系樹脂からなる容器状の貯留送出部１６とを備え、上記貯留送出部１６の底面部１７には、上記殺菌装置本体部１２内に上記液体食品１１を送出する複数の送出孔部１８、１８．．が形成されると共に、上記液体食品注入管路部１５の下端部１９と対向する位置において、上記液体食品注入管路部１５に向かって突出する円錐形の突部２０が形成されている。
また、上記突部２０の頂点は、上記液体食品注入管路部１５の中心軸の直下に配置される。
また、上記送出孔部１８、１８．．は、上記突部２０の基端部２１の外周に沿って、夫々所定間隔寸法離間して７箇所配置されている。
EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below using an accompanying drawing.
As shown in FIG. 1, a liquid food sterilization apparatus 10 according to this embodiment includes a sterilization apparatus main body 12 that circulates and sterilizes liquid food 11, and the liquid food 11 before sterilization in the sterilization apparatus main body 12. And a liquid food supply unit 13 for supplying the liquid food.
The sterilizer main body 12 includes a heating steam inlet 14 that feeds high-temperature steam into the sterilizer main body 12, and the liquid food supply unit 13 is located in the upper end of the sterilizer main body 12. The liquid food injection line section 15 for injecting the liquid food 11 before sterilization sent from the previous process into the sterilizer main body section 12 and the liquid food injection pipe section 15 are arranged below the liquid food injection pipe section 15. A container made of a fluororesin that can store a predetermined amount of the liquid food 11 supplied from the liquid food injection pipe section 15 formed in a thin cylindrical shape and can be delivered into the sterilizer main body 12. And a plurality of delivery holes 18, 18... For delivering the liquid food 11 into the sterilizer main body 12. . And a conical protrusion 20 that protrudes toward the liquid food injection conduit 15 is formed at a position facing the lower end 19 of the liquid food injection conduit 15.
In addition, the apex of the protrusion 20 is disposed directly below the central axis of the liquid food injection conduit 15.
Also, the delivery holes 18, 18. . Are arranged along the outer periphery of the base end portion 21 of the projection 20 at a predetermined distance from each other at seven locations.
本実施例の構成について、添付図面を用いて説明する。
図１は、本実施例に係る液体食品の殺菌装置全体の軸方向断面図であり、図２は図１の殺菌装置における液体食品供給部の拡大断面図である。
The configuration of this embodiment will be described with reference to the accompanying drawings.
FIG. 1 is an axial cross-sectional view of the entire liquid food sterilizer according to the present embodiment, and FIG. 2 is an enlarged cross-sectional view of a liquid food supply unit in the sterilizer of FIG.
図１に示すように、本実施例に係る液体食品の殺菌装置１０は、液体食品の加熱殺菌プラント（図１には図示せず）を構成する一機器である。 As shown in FIG. 1, the liquid food sterilization apparatus 10 according to the present embodiment is one device constituting a liquid food heat sterilization plant (not shown in FIG. 1).
図１に示すように、上記殺菌装置本体部１２はステンレス等の金属からなり、細長円筒形に形成されている。
上記殺菌装置本体部１２の上面部２２は、内部を透視しうる透明な合成樹脂、若しくはガラス等から形成された窓部（図１には図示せず）を備えている。
また、上記殺菌装置本体部１２の上端部近傍には、上記殺菌装置本体部１２の内部の空気を排出する空気排出用スリーブ部２４が上記殺菌装置本体部１２の径方向外方に突出して配設されている。
また、上記殺菌装置本体部１２の下端部近傍には、殺菌用の高温蒸気を送入する加熱蒸気送入部１４が径方向外方に突出して配設されている。
As shown in FIG. 1, the said sterilizer main-body part 12 consists of metals, such as stainless steel, and is formed in the elongate cylindrical shape.
The upper surface portion 22 of the sterilizer main body portion 12 includes a window portion (not shown in FIG. 1) formed of a transparent synthetic resin or glass that can be seen through.
Further, in the vicinity of the upper end portion of the sterilizer main body 12, an air discharge sleeve portion 24 for discharging the air inside the sterilizer main body 12 protrudes radially outward of the sterilizer main body 12. It is installed.
Further, a heating steam feeding portion 14 for feeding high-temperature steam for sterilization is provided in the vicinity of the lower end portion of the sterilizing apparatus main body portion 12 so as to protrude radially outward.
また、図２に示すように、液体食品供給部１３の液体食品注入管路部１５は、細径の円筒管から形成され、上記殺菌装置本体部１２の上面部２２の中心部を厚さ方向に貫通すると共に、上記液体食品注入管路部１５は上記貯留送出部１６の空間３０内に突出し、下端部１９は底面部１７に近接して配設されている。 Moreover, as shown in FIG. 2, the liquid food injection | pouring pipe line part 15 of the liquid food supply part 13 is formed from a small diameter cylindrical tube, and the thickness direction is centered on the upper surface part 22 of the said sterilizer main body part 12. The liquid food injection conduit portion 15 projects into the space 30 of the storage and delivery portion 16, and the lower end portion 19 is disposed close to the bottom surface portion 17.
また、上記貯留送出部１６は、所定の厚みを有する略円形の底面部１７と、上記底面部１７の周囲から上方に拡開する立ち上がり部２５とからなる、全体容器状に形成され、上記立ち上がり部２５の上端部に形成されたフランジ部２６と上記殺菌装置本体部１２の上端部内壁部に設けられた段部２７とが互いに係合することによって、上記貯留送出部１６は、上記殺菌装置本体部１２の上端部内壁に固定されている。
また、上記立ち上がり部２５には、上記殺菌装置本体部１２内と上記貯留送出部の圧力を一定に保持するための通気口２８、２８が設けられている。
In addition, the storage and delivery unit 16 is formed in an overall container shape including a substantially circular bottom surface portion 17 having a predetermined thickness and a rising portion 25 that expands upward from the periphery of the bottom surface portion 17. When the flange portion 26 formed on the upper end portion of the portion 25 and the step portion 27 provided on the inner wall portion of the upper end portion of the sterilizer main body portion 12 are engaged with each other, the storage and delivery portion 16 is It is fixed to the inner wall of the upper end portion of the main body portion 12.
Further, the rising portion 25 is provided with vent holes 28 and 28 for maintaining a constant pressure in the sterilizing apparatus main body 12 and the storage and delivery portion.
また、上記突部２０は上記貯留送出部１６の底面部１７の中心位置に形成され、上記突部２０の頂点と、上記液体食品注入管路部１５の下端部１９とが略同一の高さ位置となるように配設されている。 Further, the protrusion 20 is formed at the center position of the bottom surface portion 17 of the storage and delivery portion 16, and the apex of the protrusion 20 and the lower end portion 19 of the liquid food injection pipe portion 15 are substantially the same height. It arrange | positions so that it may become a position.
また、上記加熱蒸気送入部１４の上方には、上記殺菌装置本体部１２の内部を視認しうる窓部（図１には図示せず）が上記殺菌装置本体部１２の径方向に対向して設けられている。 Further, a window portion (not shown in FIG. 1) through which the inside of the sterilizer main body 12 can be visually recognized is opposed to the sterilizer main body 12 in the radial direction above the heating steam feeding portion 14. Is provided.
以下添付図面を用いて、本実施例の作用について説明する。
図１に示すように、液体食品１１は、上記液体食品供給部１３の液体食品注入管路部１５を介して、貯留送出部１６内に供給され、上記貯留送出部１６の突部２０の側面に沿って流れ落ち、上記貯留送出部１６内の空間３０に所定量貯留される。
なお、貯留送出部１６内の圧力と殺菌装置本体部１２内の圧力は、上記貯留送出部１６の立ち上がり部２５に設けられた通気口２８、２８を通して均一に調節されているため、貯留された液体食品１１には特段の圧力はかからず、自重による自由落下によって、上記送出孔部１８、１８．．から、上記殺菌装置本体部１２の内部に流れ落ちる。
The operation of this embodiment will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the liquid food 11 is supplied into the storage / delivery section 16 via the liquid food injection conduit section 15 of the liquid food supply section 13, and the side surface of the protrusion 20 of the storage / delivery section 16. And a predetermined amount is stored in the space 30 in the storage and delivery unit 16.
In addition, since the pressure in the storage and delivery part 16 and the pressure in the sterilizer main body part 12 are uniformly adjusted through the vents 28 and 28 provided in the rising part 25 of the storage and delivery part 16, the pressure is stored. No special pressure is applied to the liquid food 11, and the delivery holes 18, 18. . To the inside of the sterilizer main body 12.
上記液体食品１１が、上記液体食品供給部１３の液体食品注入管路部１５を介して、貯留送出部１６内に供給される際、上記突部２０の外周面部に沿って、貯留送出部１６内に滑り落ちることから、上記液体食品１１の流速が落ちにくい。
従って、上記貯留送出部１６内に貯留された液体食品１１内には、絶えず上下方向に回転する対流が発生するため、液体食品１１にパルプが含有されている場合でも、上記パルプが激しく動くことから、上記送出孔部１８、１８．．からスムーズに送出され易くなる。
その結果、殺菌装置１０を長時間に亘って稼動させた場合にも、上記送出孔部１８の目詰まりが発生し難くなり、貯留送出部１６の空間３０が液体食品１１により満たされてしまうことがない。従って、より長時間の連続運転が可能となる。
When the liquid food 11 is supplied into the storage / delivery section 16 via the liquid food injection conduit section 15 of the liquid food supply section 13, the storage / delivery section 16 along the outer peripheral surface of the protrusion 20. Since the liquid food 11 slides inward, the flow rate of the liquid food 11 is difficult to drop.
Therefore, in the liquid food 11 stored in the storage and delivery unit 16, convection constantly rotating in the vertical direction is generated, so that even when the liquid food 11 contains pulp, the pulp moves violently. To the delivery holes 18, 18. . It becomes easy to send out smoothly.
As a result, even when the sterilizer 10 is operated for a long time, the delivery hole 18 is not easily clogged, and the space 30 of the storage delivery unit 16 is filled with the liquid food 11. There is no. Therefore, continuous operation for a longer time is possible.
また、図１に示すように、上記送出孔部１８、１８．．から流れ落ちた液体食品１１は、上記加熱蒸気送入部１４から送入された高温の蒸気で満たされた、上記殺菌装置本体部１２内を落下する過程において急激に昇温され、加熱殺菌される。
加熱殺菌が終了した液体食品１１は、上記殺菌装置本体部１２から液体食品送出部３１までの間で加熱殺菌処理後送出され、殺菌温度が保持された状態で、冷却工程等（図１、図２には図示せず）の次工程に送られる。
As shown in FIG. 1, the delivery holes 18, 18,. . The liquid food 11 that has flowed down from the inside is rapidly heated and sterilized by heating in the process of falling inside the sterilizing device main body 12 filled with the high-temperature steam fed from the heating steam feeding section 14. .
The liquid food 11 after the heat sterilization is sent after the heat sterilization process between the sterilizer main body 12 and the liquid food delivery unit 31, and the sterilization temperature is maintained in a cooling process or the like (FIG. 1, FIG. 2 is not shown).
なお、突部は錐形であれば、本実施例の円錐形のほか、四角錘、三角錐等の形状を適宜選択することができる。
更に、突部の形状は、全体錐形であれば、突部の表面に、適宜溝部等の形状を形成することもできる。
In addition, if a protrusion is a cone shape, shapes, such as a square pyramid and a triangular pyramid other than the cone shape of a present Example, can be selected suitably.
Furthermore, if the shape of the protrusion is an overall cone shape, a shape such as a groove can be appropriately formed on the surface of the protrusion.
以下、本実施例に係る殺菌装置１０、及び図３に示す、従来の殺菌装置７０を、液体食品として多量のパルプを含有するトマトジュースを採用した場合を例として、連続稼動した場合における、貯留送出部の送出孔部の目詰まりの発生有無の状況を実験した結果を示す。 Hereinafter, the sterilization apparatus 10 according to the present embodiment and the conventional sterilization apparatus 70 shown in FIG. 3 are stored in a case where the tomato juice containing a large amount of pulp is used as a liquid food as an example and continuously operated. The result of having experimented the condition of the generation | occurrence | production presence or absence of clogging of the delivery hole part of a delivery part is shown.
（１）トマトジュース（液体食品）の条件
トマトジュース（スラッジボリューム値：２０、ＲＩ値５．０、ｐＨ値４．５）は、原料タンク内での初期温度を２０℃に設定し、殺菌装置に導入する前に、予め加熱二重管等で予備加熱して８０℃±５℃まで昇温する。
また、殺菌装置での加熱後の昇温温度は１４６．５℃±２℃となるように、あらかじめ殺菌装置本体部に送入する高温蒸気の温度、送入量等を調整する。
(1) Conditions of tomato juice (liquid food) Tomato juice (sludge volume value: 20, RI value 5.0, pH value 4.5) is set at an initial temperature in the raw material tank of 20 ° C. Prior to introduction into the preheating, it is preheated in advance with a heating double tube or the like and heated to 80 ° C. ± 5 ° C.
In addition, the temperature of the high-temperature steam fed into the sterilizer main body, the feed amount, etc. are adjusted in advance so that the temperature rise temperature after heating in the sterilizer is 146.5 ° C. ± 2 ° C.
（２）貯留送出部の形状
貯留送出部の形状は、図１及び図２に示す本実施例に係る貯留送出部１６と同様の形状であり、送出孔部１８は全７箇所に形成されている。
また、対比例としての従来形状の貯留送出部は、図３及び図４に示す貯留送出部７５の形状と同様であり、送出孔部８１は全７箇所に形成されている。
なお、貯留送出部の形状以外の構成については、本実施例の構成と従来例の構成との差異はない。
(2) Shape of the storage and delivery part The shape of the storage and delivery part is the same shape as the storage and delivery part 16 according to the present embodiment shown in FIGS. 1 and 2, and the delivery hole parts 18 are formed at all seven locations. Yes.
Further, the storage / delivery part having a conventional shape as a comparative example is the same as the shape of the storage / delivery part 75 shown in FIGS. 3 and 4, and the delivery hole parts 81 are formed at all seven locations.
Note that there is no difference between the configuration of this embodiment and the configuration of the conventional example with respect to the configuration other than the shape of the storage and delivery unit.
（３）測定内容
殺菌装置を連続的に稼働させ、所定時間毎に、貯留送出部の送出孔部に発生する目詰まり状況を殺菌装置上端部に設けられた窓部から目視によって確認した。
確認結果を下表１に示す。
The confirmation results are shown in Table 1 below.
（４）実験結果の考察
上記表１の通り、本実施例に係る構成の殺菌装置の場合、２０時間連続稼働後においても、目詰まりの発生は前７箇所中２箇所に留まり、液面高さの変化も実験開始から５％以内であり、稼動には何らの支障も発生しなかった。
従って、本実施例の構成によって、従来と比較して少なくとも２倍以上の連続稼働時間が確保できることが確認された。
なお、実施例の２０時間稼動後及び比較例の１０時間稼動後の状態は共に目詰まり発生の送出孔部の数は一致しているが、液面の高さは、実施例の構成の場合が３０％であるのに対し、従来例の場合は７５％に達している。
これは、目詰まりが発生していない送出孔部においても、パルプが蓄積した状態となっており、液体食品が流れ難くなっているためと考えられる。
(4) Consideration of Experimental Results As shown in Table 1 above, in the case of the sterilization apparatus having the configuration according to the present example, clogging occurred at two locations in the previous seven locations even after 20 hours of continuous operation, and the liquid level was high. The change was within 5% from the start of the experiment, and there was no problem in operation.
Therefore, it was confirmed that the continuous operation time can be secured at least twice as long as the conventional configuration by the configuration of this example.
In addition, although the number of clogged delivery holes is the same for both the state after 20 hours of operation and the state of operation for 10 hours of the comparative example, the height of the liquid level is the case of the configuration of the example. Is 30%, whereas in the case of the conventional example, it reaches 75%.
This is considered to be because the pulp is accumulated in the delivery hole portion where no clogging occurs, and the liquid food is difficult to flow.
実験において使用したトマトジュースの他、パルプを含む液体食品に対して本発明は極めて好適であるが、特にパルプの含有量がＳＶ（スラッジボリューム）値１０〜３５、特に１５〜２５の範囲の間である場合が最も好適である。
なお、上記スラッジボリューム値とは、液体１０ｍｌを長さ１０５ｍｍの遠心沈殿管内に封入し、回転半径１４．５ｃｍ、回転数３０００回／分、時間１０分の条件で遠心分離した際に、液体全体に対する沈殿物の割合を示す値である。
In addition to the tomato juice used in the experiment, the present invention is very suitable for liquid foods containing pulp, but the pulp content is particularly in the range of SV (sludge volume) value of 10 to 35, particularly 15 to 25. The case is most preferable.
The above sludge volume value means that 10 ml of liquid is sealed in a 105 mm long centrifugal sedimentation tube and centrifuged at a rotational radius of 14.5 cm, a rotational speed of 3000 times / minute, and a time of 10 minutes. It is a value which shows the ratio of the precipitate with respect to.
本発明は高温の蒸気で満たされた空間に、液体食品を注入することにより、上記液体食品の殺菌を行う、液体食品の殺菌装置であって、特にパルプを含有する液体食品の加熱殺菌を行う殺菌装置に適用可能である。 The present invention is a liquid food sterilization apparatus that sterilizes the liquid food by injecting the liquid food into a space filled with high-temperature steam, and particularly heat sterilizes the liquid food containing pulp. Applicable to sterilizers.
１０ 殺菌装置
１１ 液体食品
１２ 殺菌装置本体部
１３ 液体食品供給部
１４ 加熱蒸気送入部
１５ 液体食品注入管路部
１６ 貯留送出部
１７ 貯留送出部の底面部
１８ 送出孔部
１９ 液体食品注入管路部の下端部
２０ 突部
２１ 突部の基端部
２２ 殺菌装置本体部の上面部
２４ 空気排出用スリーブ部
２５ 貯留送出部の立ち上がり部
２６ 貯留送出部のフランジ部
２７ 殺菌装置本体部の段部
２８ 貯留送出部の通気孔
３０ 貯留送出部の空間
３１ 液体食品送出部
７０ 殺菌装置
７１ 液体食品
７２ 殺菌装置本体部
７３ 液体食品供給部
７４ 液体食品注入管路部
７５ 貯留送出部
７６ 貯留送出部の底面部
７７ 殺菌装置本体部の上面部
７８ 立ち上がり部
７９ フランジ部
８０ 殺菌装置本体部の段部
８１ 貯留送出部内の送出孔部
８２ 送入孔部のテーパー部
８３ 加熱蒸気送入部
８４ 液体食品送出部
８５ 貯留送出部の空間
８６ 空気排出用スリーブ部
DESCRIPTION OF SYMBOLS 10 Sterilizer 11 Liquid food 12 Sterilizer main-body part 13 Liquid food supply part 14 Heated steam inflow part 15 Liquid food injection | pouring pipe part 16 Reservoir | feeding part 17 Reservoir / outlet part bottom part 18 Delivery hole part 19 Lower end portion 20 Protruding portion 21 Proximal end portion 22 Upper surface portion 24 of sterilizing apparatus main body portion 24 Air discharge sleeve portion 25 Reservoir sending portion rising portion 26 Reservoir sending portion flange portion 27 Sterilizing device main body step portion 28 Ventilation hole 30 of the storage / delivery part 31 Space 31 of the storage / delivery part Liquid food delivery part 70 Sterilizer 71 Liquid food 72 Sterilizer main body 73 Liquid food supply part 74 Liquid food injection line part 75 Storage / delivery part 76 Bottom surface portion 77 Upper surface portion 78 of sterilizer main body portion Standing portion 79 Flange portion 80 Step portion 81 of sterilizer main body portion Delivery hole portion 82 in storage and delivery portion Taper portion 83 of feed hole portion Addition Thermal steam feed-in part 84 Liquid food delivery part 85 Space 86 in the storage and delivery part Air discharge sleeve part
Claims (7)
上記殺菌装置本体部は、上記殺菌装置本体部内に高温の蒸気を送入する加熱蒸気送入部を備えると共に、
上記液体食品供給部は、上記殺菌装置本体部の上端部内方に配置され、前工程から送出された殺菌前の液体食品を殺菌装置本体部に注入する液体食品注入管路部と、上記液体食品注入管路部の下方に配置され、上記液体食品注入管路部から供給される液体食品を、所定量貯留すると共に、上記殺菌装置本体部内に送出しうる容器状の貯留送出部とを備え、
上記貯留送出部の底面部には、上記殺菌装置本体部内に上記液体食品を送出する複数の送出孔部が形成されると共に、上記液体食品注入管路部の下端部と対向する位置において、上記液体食品注入管路部に向かって突出する錐形の突部が形成されていることを特徴とする液体食品の殺菌装置。 A sterilizer for liquid food comprising a sterilizer main body for circulating and sterilizing liquid food, and a liquid food supply for supplying the liquid food before sterilization into the sterilizer main body,
The sterilizer main body includes a heating steam inlet that feeds high-temperature steam into the sterilizer main body,
The liquid food supply unit is disposed inside the upper end of the sterilizer main body, and injects the liquid food before sterilization sent from the previous process into the sterilizer main body, and the liquid food. A container-shaped storage and delivery unit that is disposed below the injection line part and stores a predetermined amount of liquid food supplied from the liquid food injection line part and can be sent into the sterilizer main body part,
A plurality of delivery holes for delivering the liquid food is formed in the sterilizer main body in the bottom part of the storage and delivery part, and at a position facing the lower end of the liquid food injection conduit part, A liquid food sterilization apparatus, characterized in that a cone-shaped protrusion projecting toward the liquid food injection conduit is formed.
上記突部は円錐形に形成されると共に、上記突部の頂点は、上記液体食品注入管路部の中心軸の直下に配置されることを特徴とする請求項１記載の液体食品の殺菌装置。 The liquid food injection conduit is formed in a thin cylindrical shape,
2. The liquid food sterilizing apparatus according to claim 1, wherein the protrusion is formed in a conical shape, and the apex of the protrusion is disposed immediately below the central axis of the liquid food injection conduit. .
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57202276A (en) * | 1981-05-26 | 1982-12-11 | Fmc Corp | Method and apparatus for heat treating liquid substance |
| JPS6110111B2 (en) * | 1979-10-10 | 1986-03-28 | Dasi Industries | |
| JPH09173707A (en) * | 1995-12-28 | 1997-07-08 | Iwai Kikai Kogyo Kk | Steam remover for removing steam-component from heat sterilization treated liquid by steam |
| JPH09182781A (en) * | 1995-12-28 | 1997-07-15 | Iwai Kikai Kogyo Kk | Pasteurization method of liquid material and pasteurizer |
| JP2001299302A (en) * | 2000-04-28 | 2001-10-30 | Terada Seisakusho Co Ltd | Sterilizer |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6110111B2 (en) * | 1979-10-10 | 1986-03-28 | Dasi Industries | |
| JPS57202276A (en) * | 1981-05-26 | 1982-12-11 | Fmc Corp | Method and apparatus for heat treating liquid substance |
| JPH09173707A (en) * | 1995-12-28 | 1997-07-08 | Iwai Kikai Kogyo Kk | Steam remover for removing steam-component from heat sterilization treated liquid by steam |
| JPH09182781A (en) * | 1995-12-28 | 1997-07-15 | Iwai Kikai Kogyo Kk | Pasteurization method of liquid material and pasteurizer |
| JP2001299302A (en) * | 2000-04-28 | 2001-10-30 | Terada Seisakusho Co Ltd | Sterilizer |
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