JP3159434B2 - Continuous sterilization method and apparatus for solid-liquid mixed food - Google Patents
Continuous sterilization method and apparatus for solid-liquid mixed foodInfo
- Publication number
- JP3159434B2 JP3159434B2 JP04683198A JP4683198A JP3159434B2 JP 3159434 B2 JP3159434 B2 JP 3159434B2 JP 04683198 A JP04683198 A JP 04683198A JP 4683198 A JP4683198 A JP 4683198A JP 3159434 B2 JP3159434 B2 JP 3159434B2
- Authority
- JP
- Japan
- Prior art keywords
- solid
- liquid
- mixed food
- liquid mixed
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims description 101
- 230000001954 sterilising effect Effects 0.000 title claims description 58
- 235000013305 food Nutrition 0.000 title claims description 38
- 238000004659 sterilization and disinfection Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 9
- 238000007796 conventional method Methods 0.000 description 3
- 235000021056 liquid food Nutrition 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 244000000626 Daucus carota Species 0.000 description 1
- 235000002767 Daucus carota Nutrition 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Landscapes
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、固液混合食品の連
続殺菌において、製品の排出量を一定に保ち、且つ加熱
部と殺菌部の圧力を一定に制御する連続殺菌方法及びそ
の装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for continuously sterilizing a solid-liquid mixed food in which the discharge amount of the product is kept constant and the pressures in the heating section and the sterilization section are kept constant. It is.
【０００２】[0002]
【従来の技術】水を媒体とする液体食品を１００℃以上
に加熱する場合、外部よりその温度に対する水の飽和蒸
気圧より高い圧力で加圧する必要がある。このとき、こ
の圧力が変動して飽和蒸気圧を下回ると、それは温度の
低下を引き起こし、殺菌工程においては、予定した加熱
処理に不足を生じて殺菌が不充分となり、微生物汚染に
つながる可能性がある。また、これを避けるため殺菌温
度を高めに設定すると、過剰加熱による品質劣化につな
がるおそれがある。2. Description of the Related Art When a liquid food using water as a medium is heated to 100.degree. C. or more, it is necessary to pressurize the liquid food externally at a pressure higher than the saturated vapor pressure of water at that temperature. At this time, if this pressure fluctuates and falls below the saturated vapor pressure, it causes a decrease in temperature, and in the sterilization step, the scheduled heat treatment becomes insufficient and sterilization becomes insufficient, which may lead to microbial contamination. is there. If the sterilization temperature is set higher to avoid this, the quality may be deteriorated due to excessive heating.
【０００３】従来、連続殺菌装置として用いられる二重
管型殺菌装置や、掻き取り型殺菌装置などの連続殺菌装
置における圧力制御は、連続殺菌装置の出口に設置され
た背圧バルブの開度調節により行われている。しかしな
がら、この方法では、液状食品の場合には比較的容易に
圧力を制御できるとしても、固液混合食品では固形物が
バルブに詰まることによって、装置が破損するなどの問
題が生じる。Conventionally, pressure control in a continuous sterilizer such as a double-tube sterilizer used as a continuous sterilizer or a scraper-type sterilizer is performed by adjusting the opening of a back pressure valve installed at the outlet of the continuous sterilizer. It is done by. However, in this method, even if the pressure can be controlled relatively easily in the case of a liquid food, in the case of a solid-liquid mixed food, there is a problem that the solid is clogged in the valve and the device is broken.
【０００４】そこで、固形物対応型の定量型送液ポンプ
と定量型背圧ポンプとを用い、両ポンプの流量制御によ
って圧力を制御する方法や、これに冷却部と背圧ポンプ
との間にエアで一定圧に加圧された密封型バランスタン
クを設け、このバランスタンクの液位を背圧ポンプの流
量により一定にし、圧力を制御する方法が試みられてい
る。しかしながら、前者の方法では、流量差が直接圧力
差につながるため、圧力変動が大きくなる。また、後者
の方法では、密封型バランスタンクを加圧するエアの無
菌化設備が必要であったり、密封型バランスタンクの滅
菌処理など作業性が煩雑化したり、背圧ポンプによる排
出流量が変動することによる充填などの次工程に及ぼす
影響などの問題がある。また、圧力制御の点でも、流体
の粘度が高い場合などは、冷却部での圧損が大きくな
り、密封型バランスタンク内の圧力制御では、殺菌部の
圧力を充分には制御することができないという問題もあ
る。[0004] Therefore, a method of controlling the pressure by controlling the flow rate of both pumps using a fixed type liquid feed pump and a fixed type back pressure pump corresponding to a solid material, and a method of controlling the pressure between the cooling unit and the back pressure pump. There has been attempted a method of providing a sealed balance tank pressurized to a constant pressure with air, and controlling the pressure by making the liquid level in the balance tank constant by the flow rate of a back pressure pump. However, in the former method, since the flow rate difference directly leads to the pressure difference, the pressure fluctuation increases. In addition, the latter method requires equipment for sterilizing air that pressurizes the sealed balance tank, complicates workability such as sterilization of the sealed balance tank, and changes the discharge flow rate by the back pressure pump. There is a problem such as the influence on the next process such as filling by the gas. In addition, in terms of pressure control, when the viscosity of the fluid is high, the pressure loss in the cooling unit increases, and the pressure control in the sealed balance tank cannot control the pressure in the sterilizing unit sufficiently. There are also problems.
【０００５】さらに、従来技術として、背圧バルブ、又
は背圧ポンプの代わりに背圧タンクを用いる方法（特公
昭６１−２９７４４号）が提案されている。この方法
は、殺菌装置の出口に背圧用タンクと圧力緩衝用タンク
とを設置し、これらに接続されたバルブを逐次開閉操作
することにより、殺菌装置内の圧力を制御しながら、固
液混合食品を無菌的に次工程に移送するものであるが、
この方法による殺菌装置は、次工程への移送が間欠移送
となる。Further, as a prior art, a method using a back pressure tank instead of a back pressure valve or a back pressure pump (Japanese Patent Publication No. 61-29744) has been proposed. In this method, a back-pressure tank and a pressure buffer tank are installed at the outlet of the sterilizer, and valves connected to these are sequentially opened and closed to control the pressure in the sterilizer and to control the solid-liquid mixed food. Is aseptically transferred to the next step,
In the sterilization apparatus according to this method, the transfer to the next step is an intermittent transfer.
【０００６】[0006]
【発明が解決しようとする課題】上記の従来技術として
提案されている方法にあっては、固液混合食品の殺菌装
置から次工程の充填機側への移送が、間欠移送となるも
のであり、またそれを実施するための装置においても、
その構成は、背圧タンク以外に、圧力緩衝用タンクも必
要とするものであり、これらのタンクは共に無菌性を要
求されるところから、設備コストや、運転操作の煩雑化
の問題を伴うものである。In the method proposed as the above prior art, the transfer of the solid-liquid mixed food from the sterilizer to the filling machine in the next step is an intermittent transfer. , And also in the equipment for implementing it,
The configuration requires a pressure buffer tank in addition to the back pressure tank, and both of these tanks are required to be sterile, which causes problems of equipment costs and complicated operation. It is.
【０００７】本発明は、これらの問題点を解決するため
に創出されたもので、その目的とするところは、固液混
合食品の連続殺菌において、連続殺菌装置の加熱部及び
殺菌部の圧力変動を抑え、殺菌温度を安定させることに
より製品の品質を安定させ、且つ製品の排出流量を一定
とすることにより、次工程への影響を除くとともに、設
備コストの低減及び運転操作の簡易化を図るところにあ
る。SUMMARY OF THE INVENTION The present invention has been made to solve these problems. It is an object of the present invention to continuously sterilize solid-liquid mixed foods by controlling pressure fluctuations in a heating section and a sterilizing section of a continuous sterilizing apparatus. By stabilizing the sterilization temperature, stabilizing the quality of the product, and keeping the discharge flow rate of the product constant, eliminating the influence on the next process, reducing the equipment cost and simplifying the operation. There.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明にあっては、固液混合食品の定量型送液装
置から定量型排出装置に至る一連の殺菌系において、定
量型送液装置と殺菌装置との間に、背圧をかけるための
エアによる密封型圧力緩衝部を設けることによって、問
題点の解決を図っている。In order to achieve the above-mentioned object, according to the present invention, in a series of sterilization systems from a quantitative liquid feeding device for solid-liquid mixed foods to a quantitative discharging device, a quantitative sterilizing system is used. The problem is solved by providing a sealed pressure buffer unit using air for applying back pressure between the liquid sending device and the sterilizing device.
【０００９】すなわち、本発明の固液混合食品の連続殺
菌方法は、固液混合食品を定量的に送液し、所定の温度
に加熱し、一定時間保持して殺菌し、殺菌終了後冷却し
て排出する固液混合食品の連続殺菌において、排出流量
を一定に固定し、送液部と殺菌部との間の任意の位置に
設置した密封型緩衝部を、エアで一定圧に加圧すること
により、この密封型圧力緩衝部内の固液混合食品の液位
が一定の範囲内にあるように送液流量を制御する構成を
とっており、また、その方法を実施するための装置とし
ては、固液混合食品を送液する定量型送液装置と、送液
された固液混合食品を加熱する加熱装置と、加熱した固
液混合食品を一定時間保持する殺菌装置と、殺菌終了し
た固液混合食品を冷却する冷却装置と、冷却した固液混
合食品に一定の背圧をかけながら定量的に排出する排出
装置および、送液装置と殺菌装置の間の任意の位置に設
置され、エアで一定の背圧をかける密封型圧力緩衝装置
と、この密封型圧力緩衝装置内の固液混合食品の液位が
一定の範囲内にあるように定量型送液装置の流量を制御
する流量制御装置とからなる構成をとっている。さら
に、密封型圧力緩衝装置に固形物を通さず液体のみを通
過させるフィルターを設置している。That is, in the method for continuously sterilizing solid-liquid mixed food of the present invention, the solid-liquid mixed food is quantitatively fed, heated to a predetermined temperature, sterilized for a certain period of time, and cooled after completion of sterilization. In the continuous sterilization of solid-liquid mixed foods to be discharged and discharged, fix the discharge flow rate to a constant value and pressurize the sealed buffer installed at an arbitrary position between the liquid sending section and the sterilization section to a constant pressure with air. According to the configuration, the liquid flow rate is controlled so that the liquid level of the solid-liquid mixed food in the sealed pressure buffer is within a certain range, and as an apparatus for performing the method, A fixed-type liquid feeding device for feeding solid-liquid mixed food, a heating device for heating the fed solid-liquid mixed food, a sterilizing device for holding the heated solid-liquid mixed food for a certain period of time, and a sterilized solid-liquid A cooling device that cools the mixed food and a fixed height A discharge device that discharges quantitatively while applying pressure, and a sealed pressure buffer device that is installed at an arbitrary position between a liquid sending device and a sterilization device and applies a constant back pressure with air, and inside the sealed pressure buffer device And a flow rate control device for controlling the flow rate of the quantitative liquid feeding device so that the liquid level of the solid-liquid mixed food is within a certain range. Further, a filter is provided in the sealed pressure buffer to allow only liquid to pass without passing solids.
【００１０】[0010]
【発明の実施の形態】以下、本発明の固液混合食品の連
続殺菌方法とそれを実施するための装置について図１に
基づき説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A continuous sterilization method for solid-liquid mixed food of the present invention and an apparatus for carrying out the method will be described below with reference to FIG.
【００１１】[0011]
【実施例】図１は、本発明の固液混合食品（以下固液と
いう）の連結殺菌装置の殺菌系の概略を示すものであ
る。この固液の殺菌系は、製品としての固液の移送パイ
プ（１）中に配設された固液の定量型送液装置としての
定量型送液ポンプ（Ｐ1 ）と固液の定量型排出装置とし
ての定量型排出ポンプ（Ｐ2 ）との間に、定量型送液ポ
ンプ（Ｐ1 ）側より加熱装置（ａ）、殺菌装置（ｂ）、
冷却装置（ｃ）が配設され、定量型送液ポンプ（Ｐ1 ）
と加熱装置（ａ）との間に一定の背圧をかける密封型圧
力緩衝装置としての密封型バランスタンク（Ｔ）が設け
られているものである。FIG. 1 schematically shows a sterilization system of a combined sterilization apparatus for solid-liquid mixed food (hereinafter referred to as "solid-liquid") according to the present invention. This solid-liquid sterilization system includes a fixed-type liquid feed pump (P 1 ) as a solid-liquid fixed-quantity liquid transfer device disposed in a solid-liquid transfer pipe (1) as a product, and a solid-liquid fixed type. A heating device (a), a sterilization device (b), and a fixed-type discharge pump (P 2 ) from the fixed-type discharge pump (P 1 ) side as a discharge device.
A cooling device (c) is provided, and a fixed-quantity type liquid sending pump (P 1 )
A sealed balance tank (T) as a sealed pressure buffer device for applying a constant back pressure between the heating device (a) and the heating device (a).
【００１２】密封型バランスタンク（Ｔ）と固液の移送
パイプ（１）との間には、固液を分離するための分離フ
ィルタ（２）が、また密封型バランスタンク（Ｔ）には
タンク（Ｔ）内の分離された液体（Ｌ）の液位を測定す
る液面計（３）が設けられている。分離液体（Ｌ）の液
位を液面計（３）によって測定することにより、流量制
御装置（４）を介して、定量型送液ポンプ（Ｐ1 ）の流
量を制御するようになっている。また、密封型バランス
タンク（Ｔ）には、エアレギュレータ（５）を具有する
エアパイプ（６）及びエアリリーフバルブ（７）を具有
するエアパイプ（８）がそれぞれ設けられている。A separation filter (2) for separating solid and liquid is provided between the sealed balance tank (T) and the solid-liquid transfer pipe (1), and a tank is provided in the sealed balance tank (T). A liquid level gauge (3) for measuring the liquid level of the separated liquid (L) in (T) is provided. By measuring the liquid level of the separated liquid (L) with the liquid level meter (3), the flow rate of the fixed-quantity type liquid feed pump (P 1 ) is controlled via the flow rate control device (4). . The sealed balance tank (T) is provided with an air pipe (6) having an air regulator (5) and an air pipe (8) having an air relief valve (7).
【００１３】定量型送液ポンプ（Ｐ1 ）及び定量型排出
ポンプ（Ｐ2 ）は、固液混合物を定量的に送液及び排出
する必要があるところから、これらのポンプ（Ｐ1 ）、
（Ｐ 2 ）は、定流量性及び固形物対応性の２つの特性が
求められ、特に固形物対応性の点では、使用する固形物
に損傷を与えず、且つその内部に固形物滞留が起こらな
いようにすることが必要である。現在、このようなポン
プとしては、１枚羽根や２枚羽根のかみ合い型ポンプ
や、無脈動型ポンプなどが市販されている。A fixed-quantity type liquid feed pump (P1) And quantitative emissions
Pump (PTwo) Quantitatively sends and discharges the solid-liquid mixture
These pumps (P1),
(P Two) Has two characteristics: constant flow rate and solids handling.
Required, especially in terms of solids compatibility,
And no solids accumulate inside it.
It is necessary to do so. Currently, such a pong
As a pump, one-blade or two-blade meshing pump
And non-pulsating pumps are commercially available.
【００１４】固液を加熱する加熱装置（ａ）は、固液を
通過させながら一定の温度に加熱するものである。ま
た、製品としての固液の物性変化を抑制するために、多
段階で加熱を行う場合もある。このような加熱装置とし
ては、二重管型熱交換機、掻き取り型熱交換機、通電加
熱型熱交換機、マイクロ波型熱交換機等がある。The heating device (a) for heating the solid-liquid heats the solid-liquid to a constant temperature while passing the solid-liquid. In some cases, heating is performed in multiple stages in order to suppress a change in physical properties of the solid-liquid as a product. Examples of such a heating device include a double tube type heat exchanger, a scraping type heat exchanger, a current heating type heat exchanger, and a microwave type heat exchanger.
【００１５】加熱した固液を保持する殺菌装置（ｂ）
は、一般的に最も温度の低い固形物中心の殺菌効果（Ｆ
値）が一定の値になるように保持を行うところで、これ
には、一般的にホールドチューブが多く使用されてい
る。続く冷却装置（ｃ）は、殺菌が終了した固液を冷却
するところで、固液を通過させながら一定の温度まで冷
却する。ここは、殺菌後の工程のため無菌の状態が必要
である。また、冷却により増粘するような流体では、熱
伝達係数が低下する可能性があるため、表面掻き取りな
どの対応が必要である。このような冷却装置には、二重
管型熱交換機や、掻き取り型熱交換機がある。Sterilizer (b) for holding heated solid and liquid
Is generally the bactericidal effect of the solids center with the lowest temperature (F
Value) is held at a constant value, and a hold tube is generally used for this purpose. The subsequent cooling device (c) cools the solid-liquid that has been sterilized to a certain temperature while allowing the solid-liquid to pass therethrough. Here, an aseptic condition is required for the process after sterilization. Further, in the case of a fluid whose viscosity is increased by cooling, it is necessary to take measures such as scraping off the surface, since the heat transfer coefficient may decrease. Such cooling devices include a double-pipe heat exchanger and a scraping heat exchanger.
【００１６】密封型圧力緩衝装置としての密封型バラン
スタンク（Ｔ）は、その内部がエアにより加圧される
が、その圧力は、エアレギュレータ（５）及びエアリリ
ーフバルブ（７）を調節することによって一定圧に制御
される。固液の移送パイプ（１）より分離フィルタ
（２）を通して分離され密封型バランスタンク（Ｔ）内
に流入した液体（Ｌ）は、エアによって一定の圧力に加
圧され、その液位は液面計（３）によって測定される。
この液面計（３）による液面の測定により、流量制御装
置（４）を経て定量型送液ポンプ（Ｐ1 ）の流量が制御
され、密封型バランスタンク（Ｔ）内の一定の圧力によ
って、移送パイプ（１）内には常に一定の背圧がかけら
れている。The inside of a sealed balance tank (T) as a sealed pressure buffer is pressurized by air, and the pressure is adjusted by adjusting an air regulator (5) and an air relief valve (7). Is controlled to a constant pressure. The liquid (L) separated from the solid-liquid transfer pipe (1) through the separation filter (2) and flowing into the sealed balance tank (T) is pressurized to a constant pressure by air, and the liquid level is changed to the liquid level. It is measured by a total (3).
By measuring the liquid level by the liquid level gauge (3), the flow rate of the fixed-quantity type liquid feed pump (P 1 ) is controlled via the flow rate control device (4), and the constant pressure in the sealed balance tank (T) is controlled. A constant back pressure is always applied inside the transfer pipe (1).
【００１７】固液は、定量型排出ポンプ（Ｐ2 ）によっ
て常に充填機側に定量排出されるところから、固液が移
送パイプ（１）により加熱装置（ａ）、殺菌装置
（ｂ）、冷却装置（ｃ）を経て定量の移送を保つため、
この固液の殺菌系中の加熱装置（ａ）部及び殺菌装置
（ｂ）部に対し、密封型バランスタンク（Ｔ）によって
常に一定の圧力、すなわち背圧がかけられている。The solid-liquid is constantly discharged to the filling machine side by the constant-rate discharge pump (P 2 ). The solid-liquid is transferred by the transfer pipe (1) to the heating device (a), the sterilizing device (b), and the cooling device. In order to keep the transfer of the fixed amount through the device (c),
A constant pressure, that is, a back pressure, is always applied to the heating device (a) and the sterilization device (b) in the solid-liquid sterilization system by the sealed balance tank (T).
【００１８】密封型バランスタンク（Ｔ）は、定量型送
液ポンプ（Ｐ1 ）と加熱装置（ａ）との間の（イ）の位
置に設置する。加熱装置（ａ）と殺菌装置（ｂ）との間
の（ロ）の位置に設置してもよいが、この位置では、密
封型バランスタンク（Ｔ）の耐熱化対策が必要となり、
また殺菌装置（ｂ）と冷却装置（ｃ）との間の（ハ）の
位置、又は冷却装置（ｃ）より定量型排出ポンプ
（Ｐ2 ）側の（ニ）の位置に設置した場合には、定量型
送液ポンプ（Ｐ1 ）の流量制御に依存して殺菌装置
（ｂ）を通過する固液の流量が変動するため、殺菌値が
変動する問題を生ずる。このことから、密封型バランス
タンク（Ｔ）の設置場所は（イ）の位置が最も望まし
い。The sealed balance tank (T) is installed at a position (a) between the fixed-quantity type liquid supply pump (P 1 ) and the heating device (a). It may be installed at the position (b) between the heating device (a) and the sterilizing device (b), but at this position, it is necessary to take measures to make the sealed balance tank (T) heat resistant.
In addition, when installed at the position (c) between the sterilizing device (b) and the cooling device (c), or at the position (d) on the quantitative discharge pump (P 2 ) side from the cooling device (c). Since the flow rate of the solid and liquid passing through the sterilizer (b) varies depending on the flow rate control of the fixed-quantity type liquid feed pump (P 1 ), there arises a problem that the sterilization value varies. For this reason, the installation location of the sealed balance tank (T) is most preferably at the position (a).
【００１９】上記の本発明の固液混合食品の殺菌装置を
用い、本発明の方法にて実施した１つの固液についての
殺菌を説明する。固液混合食品としては、カルボキシメ
チルセルロース（ＣＭＣ）の０．５％水溶液に対し、１
０mm角の人参を１０％分散させたものを用い、加熱装置
（ａ）部及び殺菌装置（ｂ）部の圧力を３．０kgf ／cm
2 、排出量を２００Ｌ／ｈの条件で連続殺菌した。図２
は、従来の方法である送液ポンプと背圧ポンプ及び冷却
部と背圧ポンプの間に、エアで一定圧に加圧される密封
型バランスタンクを設け、このバランスタンクの液位を
背圧ポンプの流量によって制御する圧力制御方法により
実施した結果で、殺菌部の圧力と排出流量を示したもの
である。圧力は、約２．６kgf ／cm2 〜３．４kgf ／cm
2 の範囲で変動し、吐出流量は、約１６０Ｌ／ｈ〜２３
０Ｌ／ｈの範囲で変動する結果が示された。The sterilization of one solid-liquid implemented by the method of the present invention using the above-described sterilizing apparatus for a solid-liquid mixed food of the present invention will be described. As solid-liquid mixed food, 0.5% aqueous solution of carboxymethylcellulose (CMC)
Using a carrot of 10 mm square with 10% dispersion, the pressure of the heating device (a) and the sterilization device (b) was 3.0 kgf / cm.
2. Continuous sterilization at a discharge rate of 200 L / h. FIG.
Is provided with a sealed balance tank that is pressurized to a constant pressure with air between a liquid sending pump and a back pressure pump and a cooling unit and a back pressure pump, which are conventional methods. It shows the result of the pressure control method controlled by the flow rate of the pump, and shows the pressure and discharge flow rate of the sterilizing section. The pressure is about 2.6kgf / cm 2 ~3.4kgf / cm
2 , and the discharge flow rate is about 160 L / h to 23
The results varied in the range of 0 L / h.
【００２０】図３は、本発明の装置を用い連続殺菌方法
により実施した結果で、殺菌部の圧力と排出流量を示し
たものである。圧力は、２．９kgf ／cm2 〜３．２kgf
／cm2 の範囲で、排出流量は、１９５Ｌ／ｈ〜２０５Ｌ
／ｈの範囲で、安定した結果が示され、圧力及び排出流
量ともに従来の方法に比べて本発明における連続殺菌方
法の方が安定している結果が示された。FIG. 3 shows the results of the continuous sterilization method using the apparatus of the present invention, showing the pressure and discharge flow rate of the sterilization section. The pressure is between 2.9 kgf / cm 2 and 3.2 kgf
/ Cm 2 , the discharge flow rate is 195 L / h to 205 L
In the range of / h, stable results were shown, and both the pressure and the discharge flow rate showed that the continuous sterilization method of the present invention was more stable than the conventional method.
【００２１】[0021]
【発明の効果】本発明の固液混合食品の連続殺菌方法及
び装置によれば、固液混合食品の連続殺菌において、加
熱部及び殺菌部の圧力を一定に保つことが可能となり、
これにより製品としての固液混合食品の微生物汚染や過
剰殺菌により品質劣化を防ぐことができ、且つ充填のた
めの固液混合食品の排出流量を一定に保つことができ、
次工程への影響を除くとともに、設備コストの低減と運
転操作の簡易化を図ることができる。According to the method and apparatus for continuously sterilizing solid-liquid mixed food of the present invention, it is possible to keep the pressure of the heating section and the sterilizing section constant in continuous sterilization of solid-liquid mixed food,
This can prevent quality deterioration due to microbial contamination and excessive sterilization of the solid-liquid mixed food as a product, and can keep the discharge flow rate of the solid-liquid mixed food for filling constant,
In addition to eliminating the influence on the next process, it is possible to reduce the equipment cost and simplify the operation.
【図１】本発明における固液混合食品の連続殺菌装置の
概略を示す図面FIG. 1 is a schematic view showing an apparatus for continuously sterilizing solid-liquid mixed foods according to the present invention.
【図２】従来の方法による殺菌部の圧力と排出流量の経
時変化を示した図面FIG. 2 is a diagram showing a time-dependent change in pressure and discharge flow rate of a sterilizing unit according to a conventional method.
【図３】本発明の殺菌装置部の圧力と排出流量の経時変
化を示した図面FIG. 3 is a diagram showing a change with time of the pressure and the discharge flow rate of the sterilizing device according to the present invention.
【符号の説明】 Ｌ 液体 Ｐ1 定量型送液ポンプ Ｐ2 定量型排出ポンプ Ｔ 密封型バランスタンク ａ 加熱装置 ｂ 殺菌装置 ｃ 冷却装置 １ 固液混合食品の移送パイプ ２ 分離フィルター ３ 液面計 ４ 流量制御装置 ５ エアレギュレータ ７ エアリリーフバルブ[Description of Signs] L Liquid P 1 Fixed-quantity liquid feed pump P 2 Fixed-quantity discharge pump T Sealed balance tank a Heating device b Sterilizing device c Cooling device 1 Transfer pipe for solid-liquid mixed food 2 Separation filter 3 Level gauge 4 Flow control device 5 Air regulator 7 Air relief valve
Claims (3)
温度に加熱し、一定時間保持して殺菌し、殺菌終了後冷
却して排出する固液混合食品の連続殺菌において、排出
流量を一定に固定し、送液部と殺菌部との間の任意の位
置に設置した密封型緩衝部を、エアで一定圧に加圧する
ことにより、この密封型圧力緩衝部内の固液混合食品の
液位が一定の範囲内にあるように送液流量を制御するこ
とを特徴とする固液混合食品の連続殺菌方法。1. In a continuous sterilization of solid-liquid mixed food, the solid-liquid mixed food is quantitatively fed, heated to a predetermined temperature, held for a certain period of time, sterilized, and cooled and discharged after completion of sterilization. The solid-liquid mixed food in the sealed pressure buffer is fixed at a constant flow rate and pressurized to a constant pressure with air at a sealed buffer installed at an arbitrary position between the liquid sending section and the sterilizing section. A method for continuously sterilizing solid-liquid mixed food, wherein the flow rate of the liquid is controlled so that the liquid level is within a certain range.
と、送液された固液混合食品を加熱する加熱装置と、加
熱した固液混合食品を一定時間保持する殺菌装置と、殺
菌終了した固液混合食品を冷却する冷却装置と、冷却し
た固液混合食品に一定の背圧をかけながら定量的に排出
する排出装置および、送液装置と殺菌装置の間の任意の
位置に設置され、エアで一定の背圧をかける密封型圧力
緩衝装置と、この密封型圧力緩衝装置内の固液混合食品
の液位が一定の範囲内にあるように定量型送液装置の流
量を制御する流量制御装置とからなることを特徴とする
固液混合食品の連続殺菌装置。2. A fixed-quantity liquid feeding device for feeding solid-liquid mixed food, a heating device for heating the fed solid-liquid mixed food, a sterilizing device for holding the heated solid-liquid mixed food for a certain period of time, A cooling device that cools the sterilized solid-liquid mixed food, a discharge device that quantitatively discharges the cooled solid-liquid mixed food while applying a constant back pressure, and an arbitrary position between the liquid feeding device and the sterilizing device A sealed pressure buffer that is installed and applies a constant back pressure with air, and the flow rate of the fixed-type liquid feeder is adjusted so that the liquid level of the solid-liquid mixed food in the sealed pressure buffer is within a certain range. A continuous sterilization device for solid-liquid mixed food, comprising a flow control device for controlling.
体のみを通過させるフィルターを設置した請求項２に記
載の固液混合食品の連続殺菌装置。3. The continuous sterilizing apparatus for solid-liquid mixed food according to claim 2, wherein a filter for passing only liquid without passing solid matter is installed in the sealed pressure buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04683198A JP3159434B2 (en) | 1998-02-27 | 1998-02-27 | Continuous sterilization method and apparatus for solid-liquid mixed food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04683198A JP3159434B2 (en) | 1998-02-27 | 1998-02-27 | Continuous sterilization method and apparatus for solid-liquid mixed food |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11239469A JPH11239469A (en) | 1999-09-07 |
| JP3159434B2 true JP3159434B2 (en) | 2001-04-23 |
Family
ID=12758292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04683198A Expired - Fee Related JP3159434B2 (en) | 1998-02-27 | 1998-02-27 | Continuous sterilization method and apparatus for solid-liquid mixed food |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3159434B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017215436A1 (en) * | 2017-09-04 | 2019-03-07 | Krones Ag | Apparatus and method for pasteurization and filling of medium |
-
1998
- 1998-02-27 JP JP04683198A patent/JP3159434B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11239469A (en) | 1999-09-07 |
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