JPH07231770A - Air-containing cooking and sterilizing machine - Google Patents
Air-containing cooking and sterilizing machineInfo
- Publication number
- JPH07231770A JPH07231770A JP4982194A JP4982194A JPH07231770A JP H07231770 A JPH07231770 A JP H07231770A JP 4982194 A JP4982194 A JP 4982194A JP 4982194 A JP4982194 A JP 4982194A JP H07231770 A JPH07231770 A JP H07231770A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- temperature
- analog
- data
- steam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、不活性ガス置換した含
気レトルト食品の含気調理殺菌機に関し、詳しくは所定
の温度推移曲線に追従し、殺菌槽内の温度と圧力を時系
列に調整することのできる含気調理殺菌機に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-containing cooking and sterilizing machine for air-containing retort foods that have been replaced with an inert gas. The present invention relates to an aerated cooking sterilizer that can be adjusted.
【０００２】[0002]
【従来の技術】従来、含気レトルト食品を前調理と加熱
殺菌する含気調理殺菌機においては、図３に示すように
加熱蒸気を第１蒸気開閉弁２１を介して熱交換器２に導
き、殺菌槽内を循環する循環水と熱交換して殺菌槽１内
を加熱するとともに、第２蒸気開閉弁２２により熱交換
器２に流入する蒸気をバイパスするバイパス管路２３を
設け、さらに槽内に第１圧力調節弁２４を介して空気圧
を導入する管路と、第２圧力調節弁２５を通して空気圧
をバイパスする圧力バイパス管路２６を設ける。そして
第１蒸気開閉弁２１および第２蒸気開閉弁２２、第１圧
力調節弁２４および第２圧力調節弁２５を開閉制御し
て、含気レトルト食品の殺菌に適した槽内温度と圧力を
設定するようにしている。これらの蒸気開閉弁や圧力調
節整弁としては、通常バタフライ弁やボール弁が用いら
れ、殺菌槽１内に配設した複数の温度センサ５や圧力セ
ンサ６により殺菌槽１内の温度と圧力を検出する一方、
予めＦ値コンピュータ２０により設定してデータメモリ
２８にさせた温度推移曲線より基準値を求め、この基準
値と前記センサの検出値を比較回路２９により時系列に
比較し、その結果の両者の偏差に従い、逐次蒸気開閉弁
２１，２２や圧力調節弁２４，２５を電磁的にＯＮ−Ｏ
ＦＦ制御することにより所定の温度と圧力の条件が維持
されるように制御している。３０は蒸気開閉弁制御回
路、３１は圧力調節弁制御回路を示す。この場合、第１
蒸気開閉弁２１は槽内の温度が予め設定された温度推移
曲線上の所定温度に達するまでＯＮ状態に維持され、以
後時間の経過につれて温度推移曲線上の設定値に追従し
てＯＮ−ＯＦＦを繰り返し、設定値を越える場合は第２
蒸気開閉弁２２により加熱蒸気をバイパス管路に逃がす
ようにしている。このため、図２に示すように槽内の温
度はＯＮ−ＯＦＦ操作毎に階段状に上昇し、設定温度に
近くなると第１蒸気開閉弁２１は頻繁にＯＮ−ＯＦＦ動
作を繰り返し、第１圧力調節弁２５についても所定の空
気圧力に達した時にＯＦＦし、以後槽内の空気圧の変化
に追従してＯＮ−ＯＦＦ動作を繰り返し、殺菌槽１内の
温度と圧力は設定値を中心に鋸歯状に変化し、含気レト
ルト食品の加熱殺菌処理に適切な温度・圧力を安定して
維持することができず、加熱温度を上げたり殺菌時間を
長くしたりする必要が生じ、従って殺菌処理された含気
レトルト食品の品質にもバラツキを生じ、安定した品質
状態を維持することができなかった。2. Description of the Related Art Conventionally, in an air-containing cooking and sterilizing machine for pre-cooking and heat sterilizing an air-containing retort food, heating steam is guided to a heat exchanger 2 through a first steam opening / closing valve 21 as shown in FIG. , Heats the inside of the sterilization tank 1 by exchanging heat with circulating water circulating in the sterilization tank, and provides a bypass pipe line 23 for bypassing the steam flowing into the heat exchanger 2 by the second steam opening / closing valve 22. A pipe line for introducing air pressure through the first pressure control valve 24 and a pressure bypass pipe line 26 for bypassing air pressure through the second pressure control valve 25 are provided therein. Then, the first steam opening / closing valve 21, the second steam opening / closing valve 22, the first pressure adjusting valve 24, and the second pressure adjusting valve 25 are controlled to be opened / closed to set the temperature and pressure in the tank suitable for sterilization of the aerated retort food. I am trying to do it. A butterfly valve or a ball valve is usually used as the steam opening / closing valve or the pressure regulating valve, and the temperature and pressure in the sterilization tank 1 are controlled by a plurality of temperature sensors 5 and pressure sensors 6 arranged in the sterilization tank 1. While detecting
A reference value is obtained from the temperature transition curve set in advance by the F value computer 20 and stored in the data memory 28, and this reference value and the detected value of the sensor are compared in time series by the comparison circuit 29, and the difference between the two results is obtained. In accordance with the above, the sequential steam opening / closing valves 21 and 22 and the pressure control valves 24 and 25 are electromagnetically turned ON-O.
The FF control is performed so that the predetermined temperature and pressure conditions are maintained. 30 is a steam on-off valve control circuit, and 31 is a pressure control valve control circuit. In this case, the first
The steam on-off valve 21 is kept in an ON state until the temperature in the tank reaches a predetermined temperature on a preset temperature transition curve, and thereafter turns ON-OFF following the set value on the temperature transition curve as time passes. Repeatedly, if the set value is exceeded, the second
The steam on-off valve 22 allows the heated steam to escape to the bypass line. Therefore, as shown in FIG. 2, the temperature in the tank rises stepwise for each ON-OFF operation, and when the temperature approaches the set temperature, the first steam on-off valve 21 frequently repeats the ON-OFF operation, and the first pressure. The control valve 25 is also turned off when a predetermined air pressure is reached, and thereafter the ON-OFF operation is repeated following the change in the air pressure in the tank, and the temperature and pressure in the sterilization tank 1 are sawtooth-shaped around the set value. The temperature and pressure suitable for heat sterilization of aerated retort foods cannot be stably maintained, and it is necessary to raise the heating temperature and increase the sterilization time. The quality of the aerated retort food also varied, and a stable quality state could not be maintained.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の問題点を解
決するため、本発明では殺菌槽内の温度と圧力を含気レ
トルト食品の加熱殺菌に適切な温度推移曲線に適合する
ように制御する含気調理殺菌機を提供することを目的と
している。In order to solve the above conventional problems, in the present invention, the temperature and pressure in the sterilization tank are controlled so as to conform to a temperature transition curve suitable for heat sterilization of aerated retort food. It is intended to provide an aerated cooking sterilizer.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、熱交換器に流入する加熱蒸気の流量を制御するアナ
ログ蒸気調整弁と、殺菌槽内に加圧する空気圧力を制御
するアナログ圧力調整弁を設け、制御盤にアナログ蒸気
調整弁およびアナログ圧力調整弁を制御するプログラム
コントローラを配設し、外部インターフェースから所定
の温度推移曲線に追従して入力された複数の温度データ
および圧力データを時系列に記憶するプログラムコント
ローラのデータメモリと、前記殺菌槽内の温度センサと
圧力センサの出力と前記データメモリに記憶された温度
データおよび圧力データとを逐次時系列に比較するデー
タ比較手段と、データ比較手段の出力に基づき前記アナ
ログ蒸気調整弁およびアナログ圧力調整弁を制御して殺
菌槽内の温度と圧力を所定の温度推移曲線に追従させる
調整手段とを有するようにした。In order to achieve the above object, an analog steam adjusting valve for controlling the flow rate of heating steam flowing into a heat exchanger and an analog pressure adjusting for controlling air pressure to be pressurized in a sterilization tank. A valve is installed, and a program controller that controls the analog steam control valve and analog pressure control valve is installed on the control panel, and multiple temperature data and pressure data input from an external interface following a predetermined temperature transition curve are stored. Data memory of the program controller to store in series, data comparison means for sequentially comparing the output of the temperature sensor and pressure sensor in the sterilization tank and the temperature data and pressure data stored in the data memory in time series, and data The temperature and pressure in the sterilization tank are controlled by controlling the analog steam control valve and the analog pressure control valve based on the output of the comparison means. Was to have an adjustment means to follow the predetermined temperature deviation curve.
【０００５】[0005]
【作用】以上のように構成することにより、アナログ蒸
気調整弁により熱交換器と殺菌槽の間を循環する熱水の
温度を連続的に調整するとともに、アナログ圧力調整弁
により殺菌槽内を槽内温度に見合う所定の空気圧に調整
するようにし、殺菌槽内に配設した温度センサと圧力セ
ンサにより殺菌槽内の温度と圧力を逐次検出し、その検
出値をあらかじめ設定された食品殺菌処理に適切な温度
推移曲線に基づく温度および圧力の設定値と時系列に比
較し、その比較出力に応じて逐次アナログ蒸気調整弁お
よびアナログ圧力調整弁の開口度を調整するようにし
て、加熱蒸気の流量と空気圧力を変えて殺菌槽内の温度
と空気圧を所定の温度推移曲線に追従させ、含気レトル
ト食品の殺菌処理を適切に行うことができる。[Function] With the above configuration, the temperature of the hot water circulating between the heat exchanger and the sterilization tank is continuously adjusted by the analog steam control valve, and the sterilization tank is controlled by the analog pressure control valve. The temperature and pressure in the sterilization tank are sequentially detected by the temperature sensor and pressure sensor installed in the sterilization tank so that the air pressure is adjusted to a predetermined air pressure that matches the internal temperature, and the detected value is used for the preset food sterilization treatment. The temperature and pressure set values based on an appropriate temperature transition curve are compared with the time series, and the opening degree of the analog steam control valve and analog pressure control valve is adjusted sequentially according to the comparison output, and the flow rate of the heating steam is adjusted. The air pressure can be changed so that the temperature and the air pressure in the sterilization tank follow a predetermined temperature transition curve to appropriately perform the sterilization treatment of the aerated retort food.
【０００６】[0006]
【実施例】本発明の実施例を添付図面を参照して詳細に
説明する。図１は本発明の構成を示すブロック図で、ボ
イラー（図示せず）により生成した加熱蒸気をアナログ
蒸気調整弁３を介して熱交換器２の１次側に送り、熱交
換器２の２次側を循環ポンプＰにより循環する熱水に熱
交換して、この熱水を殺菌槽１内の含気レトルト食品に
噴射してその熱を放出し、熱交換した排水は殺菌槽１の
底に集まり回収されて熱交換器２に戻り、このルートを
所定温度および所定時間に達するまで繰り返し循環して
殺菌槽１内の温度を上げる。他方、アナログ圧力調整弁
４を介して殺菌槽１内にコンプレッサ等により空気圧力
を加え、流入する熱水の温度に見合う飽和蒸気圧に高め
て含気レトルト食品の殺菌処理を行う。Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of the present invention, in which heating steam generated by a boiler (not shown) is sent to a primary side of a heat exchanger 2 via an analog steam control valve 3 to generate a heat exchanger 2 of the heat exchanger 2. The secondary side heat-exchanges with the circulating hot water by the circulation pump P, this hot water is sprayed to the aerated retort food in the sterilization tank 1 to release the heat, and the heat-exchanged wastewater is the bottom of the sterilization tank 1. Are collected and returned to the heat exchanger 2, and this route is repeatedly circulated through the route until the temperature reaches a predetermined temperature and a predetermined time to raise the temperature in the sterilization tank 1. On the other hand, air pressure is applied to the sterilization tank 1 via the analog pressure control valve 4 by a compressor or the like to increase the saturated vapor pressure corresponding to the temperature of the inflowing hot water to sterilize the aerated retort food.
【０００７】殺菌槽１内の所定位置に槽内の温度を検出
する温度センサ５と、槽内の空気圧を検出する圧力セン
サ６を設け、槽内温度および空気圧を検出して、そのデ
ータをプログラムコントローラ７に送り、槽内温度を予
め設定された対象食品の温度推移曲線（Ｆ値曲線）の温
度と時系列に比較し、その差に応じて逐次アナログ蒸気
調整弁３の開口度を変えるとともに、槽内空気圧と槽内
温度に見合う飽和蒸気圧を時系列に比較し、その差に応
じて逐次アナログ圧力調整弁４を制御し、圧力が所定の
飽和蒸気圧以上の場合に排気弁２７により排気するよう
にしている。A temperature sensor 5 for detecting the temperature in the tank and a pressure sensor 6 for detecting the air pressure in the tank are provided at predetermined positions in the sterilization tank 1, and the temperature and air pressure in the tank are detected and the data is programmed. The temperature in the tank is compared with the temperature of the preset temperature transition curve (F value curve) of the target food in time series, and the opening degree of the analog steam control valve 3 is sequentially changed according to the difference. , The saturated vapor pressure commensurate with the in-tank air pressure and the in-tank temperature are compared in time series, and the analog pressure adjusting valve 4 is sequentially controlled according to the difference, and when the pressure is equal to or higher than a predetermined saturated vapor pressure, the exhaust valve 27 is used. I try to exhaust it.
【０００８】プログラムコントローラ７は、温度センサ
５から出力するアナログ信号の槽内温度を温度Ａ／Ｄ変
換器８により、また圧力センサ６から出力するアナログ
信号の槽内圧力を圧力Ａ／Ｄ変換器９によりそれぞれＡ
／Ｄ変換し、変換されたそれぞれのデジタル信号によ
り、殺菌槽１内の温度と圧力をそれぞれ温度表示器１１
および圧力表示器１２に表示すると同時に、そのデータ
信号を基準回路１０に送る。基準回路１０には、検出さ
れたそれぞれのデータ信号を記憶する第２データメモリ
（ＤＭ２）１３、予め設定された基準値を記憶する第１
データメモリ（ＤＭ１）１４、シーケンス回路１５、変
更回路１６、温度Ｄ／Ａ変換器１７および圧力Ｄ／Ａ変
換器１８から構成され、シーケンス回路１５により第２
データメモリ１３に記憶された温度および空気圧のデー
タを、予め第１データメモリ１４に記憶された基準値と
時系列に比較し、その偏差に応じてそれぞれの温度また
は圧力の制御信号をその都度出力し、これを温度Ｄ／Ａ
変換器１７または圧力Ｄ／Ａ変換器１８によりアナログ
信号に変換して第１アナログ調整弁３または第２アナロ
グ調整弁４を制御する。外部インターフェース１９によ
り、Ｆ値コンピュータ２０の温度推移曲線のデータを定
期的に（例えば20秒に１回の割合）プログラムコントロ
ーラ７に送り、変更回路１６を介して第１データメモリ
１４にその温度推移曲線のデータを記憶し、シーケンス
回路１５によりシーケンシャルに更新する。そして、第
１データメモリ１４に記憶された温度推移曲線上のデー
タと、第２データメモリ１３に記憶された槽内の検出温
度および検出空気圧のデータを時系列に基準回路１０に
より比較し、その偏差に応じそれぞれの制御信号を生成
しアナログ蒸気調整弁３とアナログ圧力調整弁４に送る
ことにより、殺菌槽内の温度と圧力を温度推移曲線に追
従して変化するように調整することができる。外部イン
ターフェース１９を介して、予め対象とする食品とその
量および大きさから殺菌処理に適切な温度推移曲線を算
出するＦ値コンピュータ２０が設けられている。The program controller 7 uses the temperature A / D converter 8 for the temperature inside the tank of the analog signal output from the temperature sensor 5, and the pressure A / D converter for the pressure inside the tank of the analog signal output from the pressure sensor 6. 9 by A
The temperature and pressure in the sterilization tank 1 are respectively displayed on the temperature display 11 by the D / D conversion and the converted digital signals.
At the same time as displaying the pressure on the pressure indicator 12, the data signal is sent to the reference circuit 10. The reference circuit 10 has a second data memory (DM2) 13 for storing each detected data signal, and a first data memory (DM2) 13 for storing a preset reference value.
A data memory (DM1) 14, a sequence circuit 15, a change circuit 16, a temperature D / A converter 17 and a pressure D / A converter 18, and the sequence circuit 15 makes a second
The temperature and air pressure data stored in the data memory 13 is compared with a reference value stored in advance in the first data memory 14 in time series, and each temperature or pressure control signal is output in accordance with the deviation. And this is the temperature D / A
The converter 17 or the pressure D / A converter 18 converts the analog signal into an analog signal to control the first analog adjusting valve 3 or the second analog adjusting valve 4. Data of the temperature transition curve of the F value computer 20 is sent to the program controller 7 periodically (for example, once every 20 seconds) by the external interface 19, and the temperature transition is made to the first data memory 14 via the change circuit 16. The curve data is stored and sequentially updated by the sequence circuit 15. Then, the data on the temperature transition curve stored in the first data memory 14 and the data of the detected temperature and the detected air pressure in the tank stored in the second data memory 13 are compared in time series by the reference circuit 10, and the By generating respective control signals according to the deviations and sending them to the analog steam adjusting valve 3 and the analog pressure adjusting valve 4, the temperature and pressure in the sterilization tank can be adjusted so as to follow the temperature transition curve. . An F value computer 20 for calculating a temperature transition curve suitable for sterilization processing from the target food and its amount and size in advance is provided via the external interface 19.
【０００９】予め、Ｆ値コンピュータ２０により対象と
する食品毎に、対象とする細菌や微生物の加熱致死時間
（Ｆ値）と、食品の量および大きさから殺菌処理に適切
な温度推移曲線を算出して、その食品に最適な殺菌温度
と圧力の目標値を記憶し、含気レトルト食品の加熱殺菌
を開始する時に、マニュアルにより入力された対象の含
気レトルト食品とその大きさおよびその量等の入力情報
と、殺菌槽１の温度センサ５と圧力センサ６からの初期
値信号を確認し、所定の温度推移曲線に基づく温度と圧
力の基準値を算出し、プログラムコントローラ７に送り
第１データメモリ１４に記憶する。そして第１データメ
モリ１４に記憶した基準値と第２データメモリ１３に記
憶された温度センサ５と圧力センサ６の検出値とを基準
回路１０により時系列に比較して偏差を求め、その偏差
を温度Ｄ／Ａ変換器１７と圧力Ｄ／Ａ変換器１８により
Ｄ／Ａ変換して、制御信号としてアナログ蒸気調整弁３
およびアナログ圧力調整弁４を制御する。The F-value computer 20 previously calculates a temperature transition curve suitable for sterilization for each target food from the heat-killing time (F-value) of the target bacteria and microorganisms and the amount and size of the food. Then, the target values of the optimum sterilization temperature and pressure for the food are stored, and when the heat sterilization of the air-containing retort food is started, the target air-containing retort food and its size and amount are input manually. Input information and the initial value signals from the temperature sensor 5 and the pressure sensor 6 of the sterilization tank 1, the reference values of temperature and pressure based on a predetermined temperature transition curve are calculated, and sent to the program controller 7 to send the first data. It is stored in the memory 14. Then, the reference value stored in the first data memory 14 and the detected values of the temperature sensor 5 and the pressure sensor 6 stored in the second data memory 13 are compared in time series by the reference circuit 10 to obtain a deviation, and the deviation is calculated. The temperature D / A converter 17 and the pressure D / A converter 18 perform D / A conversion, and the analog steam control valve 3 is used as a control signal.
And controlling the analog pressure regulating valve 4.
【００１０】[0010]
【発明の効果】以上のように本発明では、殺菌槽内に槽
内の温度を検出する温度センサと圧力を検出する圧力セ
ンサを設け、加熱蒸気をアナログ蒸気調整弁を介して熱
交換器に供給し、殺菌槽内を循環する循環水に熱交換し
て殺菌槽内にこの循環水を注水し含気レトルト食品を加
熱する一方、循環する高温水に見合う高圧の空気圧をア
ナログ圧力調整弁を介して殺菌槽内に供給し、予め食品
の種類やその量または大きさから算出された温度推移曲
線に沿って時系列的にアナログ蒸気調整弁およびアナロ
グ圧力調整弁を制御することにより、含気レトルト食品
に最適な殺菌処理を行うことができ、且つ殺菌処理した
食品の品質を安定した品質に維持することができる。ま
た、従来は殺菌槽内の温度を制御するために、熱交換器
に供給する加熱蒸気を調整する蒸気調整弁と、殺菌槽内
の温度が上り過ぎた時に加熱蒸気をバイパスする蒸気調
整弁を必要とし、また殺菌槽内の圧力を制御するために
流入する空気圧力を調整する圧力調整弁と、殺菌槽内の
圧力が上り過ぎた時にバイパスして圧力を下げる圧力調
節弁をそれぞれ必要としていたが、従来と同程度の制御
をアナログ蒸気調整弁とアナログ圧力調整弁のそれぞれ
１基で行うことができ、制御装置を簡単にして、装置全
体のコストダウンを図ることができる。As described above, in the present invention, the temperature sensor for detecting the temperature inside the sterilization tank and the pressure sensor for detecting the pressure are provided in the sterilization tank, and the heated steam is supplied to the heat exchanger via the analog steam adjusting valve. While supplying heat to the circulating water circulating in the sterilization tank and injecting this circulating water into the sterilization tank to heat the aerated retort food, a high pressure air pressure corresponding to the circulating high temperature water is converted to an analog pressure control valve. It is supplied to the sterilization tank via the sterilization tank, and the analog steam control valve and analog pressure control valve are controlled in time series along the temperature transition curve calculated from the type of food and its amount or size in advance. Optimal sterilization treatment can be performed on the retort food, and the quality of the sterilized food can be maintained at a stable quality. Further, conventionally, in order to control the temperature in the sterilization tank, a steam adjustment valve that adjusts the heating steam supplied to the heat exchanger and a steam adjustment valve that bypasses the heating steam when the temperature in the sterilization tank rises too much. In addition, a pressure control valve that regulates the inflowing air pressure to control the pressure in the sterilization tank and a pressure control valve that lowers the pressure by bypassing when the pressure in the sterilization tank rises too much were required. However, the same degree of control as in the conventional case can be performed by each one of the analog steam adjusting valve and the analog pressure adjusting valve, and the control device can be simplified and the cost of the entire device can be reduced.
【図１】本発明の構成を示すブロック図である。FIG. 1 is a block diagram showing a configuration of the present invention.
【図２】本発明の殺菌槽の温度特性曲線と従来の殺菌槽
の温度特性曲線を示す温度特性図である。FIG. 2 is a temperature characteristic diagram showing a temperature characteristic curve of a sterilization tank of the present invention and a temperature characteristic curve of a conventional sterilization tank.
【図３】従来の構成を示すブロック図である。FIG. 3 is a block diagram showing a conventional configuration.
１ 殺菌槽 ２ 熱交換器 ３ アナログ蒸気調整弁 ４ アナログ圧力調整弁 ５ 温度センサ ６ 圧力センサ ７ プログラムコントローラ ８ 温度Ａ／Ｄ変換器 ９ 圧力Ａ／Ｄ変換器 １０ 基準回路 １１ 温度表示器 １２ 圧力表示器 １３ 第２データメモリ １４ 第１データメモリ １５ シーケンス回路 １６ 変更回路 １７ 温度Ｄ／Ａ変換器 １８ 圧力Ｄ／Ａ変換器 １９ 外部インターフェース ２０ Ｆ値コンピュータ ２１ 第１蒸気開閉弁 ２２ 第２蒸気開閉弁 ２３ バイパス管路 ２４ 第１圧力調節弁 ２５ 第２圧力調節弁 ２６ 圧力バイパス管路 ２７ 排気弁 ２８ データメモリ ２９ 比較回路 ３０ 蒸気開閉弁制御回路 ３１ 圧力調節弁制御回路 1 Sterilization tank 2 Heat exchanger 3 Analog steam regulating valve 4 Analog pressure regulating valve 5 Temperature sensor 6 Pressure sensor 7 Program controller 8 Temperature A / D converter 9 Pressure A / D converter 10 Reference circuit 11 Temperature display 12 Pressure display Device 13 Second data memory 14 First data memory 15 Sequence circuit 16 Change circuit 17 Temperature D / A converter 18 Pressure D / A converter 19 External interface 20 F value computer 21 First steam opening / closing valve 22 Second steam opening / closing valve 23 Bypass Pipeline 24 First Pressure Control Valve 25 Second Pressure Control Valve 26 Pressure Bypass Pipeline 27 Exhaust Valve 28 Data Memory 29 Comparison Circuit 30 Steam Open / Close Valve Control Circuit 31 Pressure Control Valve Control Circuit
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年６月２３日[Submission date] June 23, 1994
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００１[Correction target item name] 0001
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００１】[0001]
【産業上の利用分野】本発明は、不活性ガス置換した含
気レトルト食品の含気調理殺菌機に関し、詳しくは所定
の温度時間推移曲線に追従し、殺菌槽内の温度と圧力を
時系列に調整することのできる含気調理殺菌機に関する
ものである。BACKGROUND OF THE INVENTION This invention relates to aerated cooking sterilizer of aerated retort foods inert gas substitution, details to follow a predetermined temperature time course curve, time series of temperature and pressure of the sterilizing chamber The present invention relates to an aerated cooking sterilizer that can be adjusted to.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Name of item to be corrected] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００２】[0002]
【従来の技術】従来、含気レトルト食品を前調理と加熱
殺菌する含気調理殺菌機においては、図３に示すように
加熱蒸気を第１蒸気開閉弁２１を介して熱交換器２に導
き、殺菌槽内を循環する循環水と熱交換して殺菌槽１内
を加熱するとともに、第２蒸気開閉弁２２により熱交換
器２に流入する蒸気をバイパスするバイパス管路２３を
設け、さらに槽内に第１圧力調節弁２４を介して空気圧
を導入する管路と、第２圧力調節弁２５を通して空気圧
をバイパスする圧力バイパス管路２６を設ける。そして
第１蒸気開閉弁２１および第２蒸気開閉弁２２、第１圧
力調節弁２４および第２圧力調節弁２５を開閉制御し
て、含気レトルト食品の殺菌に適した槽内温度と圧力を
設定するようにしている。これらの蒸気開閉弁や圧力調
節整弁としては、通常バタフライ弁やボール弁が用いら
れ、殺菌槽１内に配設した複数の温度センサ５や圧力セ
ンサ６により殺菌槽１内の温度と圧力を検出する一方、
予めＦ値コンピュータ２０により設定してデータメモリ
２８に記憶させた温度時間推移曲線より基準値を求め、
この基準値と前記センサの検出値を比較回路２９により
時系列に比較し、その結果の両者の偏差に従い、逐次蒸
気開閉弁２１，２２や圧力調節弁２４，２５を電磁的に
ＯＮ−ＯＦＦ制御することにより所定の温度と圧力の条
件が維持されるように制御している。３０は蒸気開閉弁
制御回路、３１は圧力調節弁制御回路を示す。この場
合、第１蒸気開閉弁２１は槽内の温度が予め設定された
温度時間推移曲線上の所定温度に達するまでＯＮ状態に
維持され、以後時間の経過につれて温度推移曲線上の設
定値に追従してＯＮ−ＯＦＦを繰り返し、設定値を越え
る場合は第２蒸気開閉弁２２により加熱蒸気をバイパス
管路に逃がすようにしている。このため、図２に示すよ
うに槽内の温度はＯＮ−ＯＦＦ操作毎に階段状に上昇
し、設定温度に近くなると第１蒸気開閉弁２１は頻繁に
ＯＮ−ＯＦＦ動作を繰り返し、第１圧力調節弁２５につ
いても所定の空気圧力に達した時にＯＦＦし、以後槽内
の空気圧の変化に追従してＯＮ−ＯＦＦ動作を繰り返
し、殺菌槽１内の温度と圧力は設定値を中心に鋸歯状に
変化し、含気レトルト食品の加熱殺菌処理に適切な温度
・圧力を安定して維持することができず、加熱温度を上
げたり殺菌時間を長くしたりする必要が生じ、従って殺
菌処理された含気レトルト食品の品質にもバラツキを生
じ、安定した品質状態を維持することができなかった。2. Description of the Related Art Conventionally, in an air-containing cooking and sterilizing machine for pre-cooking and heat sterilizing an air-containing retort food, heating steam is guided to a heat exchanger 2 through a first steam opening / closing valve 21 as shown in FIG. , Heats the inside of the sterilization tank 1 by exchanging heat with circulating water circulating in the sterilization tank, and provides a bypass pipe line 23 for bypassing the steam flowing into the heat exchanger 2 by the second steam opening / closing valve 22. A pipe line for introducing air pressure through the first pressure control valve 24 and a pressure bypass pipe line 26 for bypassing air pressure through the second pressure control valve 25 are provided therein. Then, the first steam opening / closing valve 21, the second steam opening / closing valve 22, the first pressure adjusting valve 24, and the second pressure adjusting valve 25 are controlled to be opened / closed to set the temperature and pressure in the tank suitable for sterilization of the aerated retort food. I am trying to do it. A butterfly valve or a ball valve is usually used as the steam opening / closing valve or the pressure regulating valve, and the temperature and pressure in the sterilization tank 1 are controlled by a plurality of temperature sensors 5 and pressure sensors 6 arranged in the sterilization tank 1. While detecting
The reference value is obtained from the temperature- time transition curve set in advance by the F value computer 20 and stored in the data memory 28.
The reference value and the detection value of the sensor are compared in time series by the comparison circuit 29, and the sequential steam on-off valves 21, 22 and the pressure control valves 24, 25 are electromagnetically turned on and off according to the deviation between the results. By doing so, the temperature and pressure conditions are controlled to be maintained. 30 is a steam on-off valve control circuit, and 31 is a pressure control valve control circuit. In this case, the first steam on-off valve 21 is kept in the ON state until the temperature in the tank reaches the predetermined temperature on the preset temperature- time transition curve, and thereafter follows the set value on the temperature transition curve as time passes. Then, ON-OFF is repeated, and when the set value is exceeded, the second steam opening / closing valve 22 allows the heated steam to escape to the bypass line. Therefore, as shown in FIG. 2, the temperature in the tank rises stepwise for each ON-OFF operation, and when the temperature approaches the set temperature, the first steam on-off valve 21 frequently repeats the ON-OFF operation, and the first pressure. The control valve 25 is also turned off when a predetermined air pressure is reached, and thereafter, the ON-OFF operation is repeated following the change in the air pressure in the tank, and the temperature and pressure in the sterilization tank 1 are sawtooth-shaped around the set value. The temperature and pressure suitable for heat sterilization of aerated retort foods cannot be stably maintained, and it is necessary to raise the heating temperature and increase the sterilization time. The quality of the aerated retort food also varied, and a stable quality state could not be maintained.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】[0003]
【発明が解決しようとする課題】前記従来の問題点を解
決するため、本発明では殺菌槽内の温度と圧力を含気レ
トルト食品の加熱殺菌に適切な温度時間推移曲線に適合
するように制御する含気調理殺菌機を提供することを目
的としている。In order to solve the above conventional problems, in the present invention, the temperature and pressure in the sterilization tank are controlled so as to conform to a temperature- time transition curve suitable for heat sterilization of aerated retort food. It is intended to provide an aerated cooking sterilizer.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、熱交換器に流入する加熱蒸気の流量を制御するアナ
ログ蒸気調整弁と、殺菌槽内に加圧する空気圧力を制御
するアナログ圧力調整弁を設け、制御盤にアナログ蒸気
調整弁およびアナログ圧力調整弁を制御するプログラム
コントローラを配設し、外部インターフェースから所定
の温度時間推移曲線に追従して入力された複数の温度デ
ータおよび圧力データを時系列に記憶するプログラムコ
ントローラのデータメモリと、前記殺菌槽内の温度セン
サと圧力センサの出力と前記データメモリに記憶された
温度データおよび圧力データとを逐次時系列に比較する
データ比較手段と、データ比較手段の出力に基づき前記
アナログ蒸気調整弁およびアナログ圧力調整弁を制御し
て殺菌槽内の温度と圧力を所定の温度時間推移曲線に追
従させる調整手段とを有するようにした。In order to achieve the above object, an analog steam adjusting valve for controlling the flow rate of heating steam flowing into a heat exchanger and an analog pressure adjusting for controlling air pressure to be pressurized in a sterilization tank. A valve is provided, and a program controller for controlling the analog steam control valve and analog pressure control valve is installed on the control panel, and multiple temperature data and pressure data input from an external interface following a predetermined temperature- time transition curve are input. Data memory of the program controller to store in time series, data comparison means for sequentially comparing the output of the temperature sensor and pressure sensor in the sterilization tank and the temperature data and pressure data stored in the data memory in time series, The temperature in the sterilization tank is controlled by controlling the analog steam adjusting valve and the analog pressure adjusting valve based on the output of the data comparing means. And to have an adjustment means to follow the pressure to a predetermined temperature time transition curve.
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】[0005]
【作用】以上のように構成することにより、アナログ蒸
気調整弁により熱交換器と殺菌槽の間を循環する熱水の
温度を連続的に調整するとともに、アナログ圧力調整弁
により殺菌槽内を槽内温度に見合う所定の空気圧に調整
するようにし、殺菌槽内に配設した温度センサと圧力セ
ンサにより各殺菌時間に対して殺菌槽内の温度と圧力を
逐次検出し、その検出値をあらかじめ設定された食品殺
菌処理に適切な温度時間推移曲線に基づく温度および圧
力の設定値と時系列に比較し、その比較出力に応じて逐
次アナログ蒸気調整弁およびアナログ圧力調整弁の開口
度を調整するようにして、加熱蒸気の流量と空気圧力を
変えて殺菌槽内の温度と空気圧を所定の温度時間推移曲
線に追従させ、含気レトルト食品の殺菌処理を適切に行
うことができる。[Function] With the above configuration, the temperature of the hot water circulating between the heat exchanger and the sterilization tank is continuously adjusted by the analog steam control valve, and the sterilization tank is controlled by the analog pressure control valve. The temperature and pressure inside the sterilization tank are sequentially detected for each sterilization time by the temperature sensor and pressure sensor arranged inside the sterilization tank, and the detected value is set in advance. The temperature and pressure set values based on the temperature / time transition curve appropriate for the food sterilization process are compared with the time series, and the degree of opening of the analog steam adjustment valve and analog pressure adjustment valve is adjusted sequentially according to the comparison output. Then, the flow rate of heated steam and the air pressure are changed so that the temperature and the air pressure in the sterilization tank follow a predetermined temperature- time transition curve, and the sterilization treatment of the aerated retort food can be appropriately performed.
【手続補正８】[Procedure Amendment 8]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】殺菌槽１内の所定位置に槽内の温度を検出
する温度センサ５と、槽内の空気圧を検出する圧力セン
サ６を設け、槽内温度および空気圧を時間ごとに検出し
て、そのデータをプログラムコントローラ７に送り、槽
内温度を予め設定された対象食品の温度時間推移曲線
（Ｆ値曲線）の温度と時系列に比較し、その差に応じて
逐次アナログ蒸気調整弁３の開口度を変えるとともに、
槽内空気圧と槽内温度に見合う飽和蒸気圧を時系列に比
較し、その差に応じて逐次アナログ圧力調整弁４を制御
し、圧力が所定の飽和蒸気圧以上の場合に排気弁２７に
より排気するようにしている。A temperature sensor 5 for detecting the temperature in the tank and a pressure sensor 6 for detecting the air pressure in the tank are provided at predetermined positions in the sterilization tank 1, and the temperature and air pressure in the tank are detected every time , and the The data is sent to the program controller 7, the temperature in the tank is compared with the temperature of the preset temperature- time transition curve (F value curve) of the target food in time series, and the opening of the analog vapor control valve 3 is sequentially opened according to the difference. With changing the degree,
The saturated vapor pressure commensurate with the in-tank air pressure and the in-tank temperature is compared in time series, and the analog pressure adjusting valve 4 is sequentially controlled according to the difference, and when the pressure is equal to or higher than a predetermined saturated vapor pressure, exhaust is performed by the exhaust valve 27. I am trying to do it.
【手続補正９】[Procedure Amendment 9]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】プログラムコントローラ７は、温度センサ
５から出力するアナログ信号の槽内温度を温度Ａ／Ｄ変
換器８により、また圧力センサ６から出力するアナログ
信号の槽内圧力を圧力Ａ／Ｄ変換器９によりそれぞれＡ
／Ｄ変換し、変換されたそれぞれのデジタル信号によ
り、殺菌槽１内の温度と圧力をそれぞれ温度表示器１１
および圧力表示器１２に表示すると同時に、そのデータ
信号を基準回路１０に送る。基準回路１０には、検出さ
れたそれぞれのデータ信号を記憶する第２データメモリ
（ＤＭ２）１３、予め設定された基準値を記憶する第１
データメモリ（ＤＭ１）１４、シーケンス回路１５、変
更回路１６、温度Ｄ／Ａ変換器１７および圧力Ｄ／Ａ変
換器１８から構成され、シーケンス回路１５により第２
データメモリ１３に記憶された温度および空気圧のデー
タを、予め第１データメモリ１４に記憶された基準値と
時系列に比較し、その偏差に応じてそれぞれの温度また
は圧力の制御信号をその都度出力し、これを温度Ｄ／Ａ
変換器１７または圧力Ｄ／Ａ変換器１８によりアナログ
信号に変換して第１アナログ調整弁３または第２アナロ
グ調整弁４を制御する。外部インターフェース１９によ
り、Ｆ値コンピュータ２０の温度時間推移曲線のデータ
を定期的に（例えば２０秒に１回の割合）プログラムコ
ントローラ７に送り、変更回路１６を介して第１データ
メモリ１４にその温度時間推移曲線のデータを記憶し、
シーケンス回路１５によりシーケンシャルに更新する。
そして、第１データメモリ１４に記憶された温度時間推
移曲線上のデータと、第２データメモリ１３に記憶され
た槽内の検出温度および検出空気圧のデータを時系列に
基準回路１０により比較し、その偏差に応じそれぞれの
制御信号を生成しアナログ蒸気調整弁３とアナログ圧力
調整弁４に送ることにより、殺菌槽内の温度と圧力を温
度時間推移曲線に追従して変化するように調整すること
ができる。外部インターフェース１９を介して、予め対
象とする食品とその量および大きさから殺菌処理に適切
な温度時間推移品温曲線からＦ０値を算出するＦ値コン
ピュータ２０が設けられている。The program controller 7 uses the temperature A / D converter 8 for the temperature inside the tank of the analog signal output from the temperature sensor 5, and the pressure A / D converter for the pressure inside the tank of the analog signal output from the pressure sensor 6. 9 by A
The temperature and pressure in the sterilization tank 1 are respectively displayed on the temperature display 11 by the D / D conversion and the converted digital signals.
At the same time as displaying the pressure on the pressure indicator 12, the data signal is sent to the reference circuit 10. The reference circuit 10 has a second data memory (DM2) 13 for storing each detected data signal, and a first data memory (DM2) 13 for storing a preset reference value.
A data memory (DM1) 14, a sequence circuit 15, a change circuit 16, a temperature D / A converter 17 and a pressure D / A converter 18, and the sequence circuit 15 makes a second
The temperature and air pressure data stored in the data memory 13 is compared with a reference value stored in advance in the first data memory 14 in time series, and each temperature or pressure control signal is output in accordance with the deviation. And this is the temperature D / A
The converter 17 or the pressure D / A converter 18 converts the analog signal into an analog signal to control the first analog adjusting valve 3 or the second analog adjusting valve 4. By the external interface 19, the data of the temperature- time transition curve of the F value computer 20 is sent to the program controller 7 periodically (for example, once every 20 seconds), and the temperature is stored in the first data memory 14 via the change circuit 16. Stores the data of time transition curve,
The sequence circuit 15 updates sequentially.
Then, the data on the temperature- time transfer curve stored in the first data memory 14 and the data of the detected temperature and the detected air pressure in the tank stored in the second data memory 13 are chronologically used as a reference circuit. 10, and each control signal is generated according to the deviation and sent to the analog steam adjusting valve 3 and the analog pressure adjusting valve 4 to change the temperature and pressure in the sterilization tank by following the temperature- time transition curve. Can be adjusted. An F value computer 20 for calculating an F0 value from a temperature- time transition product temperature curve suitable for sterilization processing based on the target food and its amount and size is provided via the external interface 19 in advance.
【手続補正１０】[Procedure Amendment 10]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】予め、Ｆ値コンピュータ２０により対象と
する食品毎に、対象とする細菌や微生物の加熱致死時間
（Ｆ値）と、食品の量および大きさから殺菌処理に適切
な温度時間推移曲線を算出して、その食品に最適な殺菌
温度と圧力の目標値を記憶し、含気レトルト食品の加熱
殺菌を開始する時に、マニュアルにより入力された対象
の含気レトルト食品とその大きさおよびその量等の入力
情報と、殺菌槽１の温度センサ５と圧力センサ６からの
初期値信号を確認し、所定の温度時間推移曲線に基づく
温度と圧力の基準値を算出し、プログラムコントローラ
７に送り第１データメモリ１４に記憶する。そして第１
データメモリ１４に記憶した基準値と第２データメモリ
１３に記憶された温度センサ５と圧力センサ６の検出値
とを基準回路１０により時系列に比較して偏差を求め、
その偏差を温度Ｄ／Ａ変換器１７と圧力Ｄ／Ａ変換器１
８によりＤ／Ａ変換して、制御信号としてアナログ蒸気
調整弁３およびアナログ圧力調整弁４を制御する。In advance, the F-value computer 20 calculates a temperature- time transition curve suitable for sterilization treatment from the heat-killing time (F-value) of the target bacteria or microorganisms and the amount and size of the food for each target food. Calculate and memorize the target value of the optimum sterilization temperature and pressure for the food, and when starting the heat sterilization of the aerated retort food, the target aerated retort food and its size and its amount Confirm the input information such as, and the initial value signals from the temperature sensor 5 and the pressure sensor 6 of the sterilization tank 1, calculate the reference values of temperature and pressure based on a predetermined temperature- time transition curve, and send them to the program controller 7. 1 Stored in the data memory 14. And the first
The reference value stored in the data memory 14 and the detection values of the temperature sensor 5 and the pressure sensor 6 stored in the second data memory 13 are compared in time series by the reference circuit 10 to obtain a deviation,
The deviation is calculated by the temperature D / A converter 17 and the pressure D / A converter 1.
D / A conversion is performed by 8 to control the analog steam adjusting valve 3 and the analog pressure adjusting valve 4 as control signals.
【手続補正１１】[Procedure Amendment 11]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】[0010]
【発明の効果】以上のように本発明では、殺菌槽内に槽
内の温度を検出する温度センサと圧力を検出する圧力セ
ンサを設け、加熱蒸気をアナログ蒸気調整弁を介して熱
交換器に供給し、殺菌槽内を循環する循環水に熱交換し
て殺菌槽内にこの循環水を注水し含気レトルト食品を加
熱する一方、循環する高温水に見合う高圧の空気圧をア
ナログ圧力調整弁を介して殺菌槽内に供給し、予め食品
の種類やその量または大きさから算出された温度時間推
移曲線に沿って時系列的にアナログ蒸気調整弁およびア
ナログ圧力調整弁を制御することにより、含気レトルト
食品に最適な殺菌処理を行うことができ、且つ被殺菌物
の容量に関係なく温度時間推移曲線に沿って殺菌処理が
可能であるため殺菌処理した食品の品質を安定した品質
に維持することができる。また、従来は殺菌槽内の温度
を制御するために、熱交換器に供給する加熱蒸気を調整
する蒸気調整弁と、殺菌槽内の温度が上り過ぎた時に加
熱蒸気をバイパスする蒸気調整弁を必要とし、また殺菌
槽内の圧力を制御するために流入する空気圧力を調整す
る圧力調整弁と、殺菌槽内の圧力が上り過ぎた時にバイ
パスして圧力を下げる圧力調節弁をそれぞれ必要として
いたが、従来と同程度の制御をアナログ蒸気調整弁とア
ナログ圧力調整弁のそれぞれ１基で行うことができ、制
御装置を簡単にして、装置全体のコストダウンを図るこ
とができる。As described above, in the present invention, the temperature sensor for detecting the temperature inside the sterilization tank and the pressure sensor for detecting the pressure are provided in the sterilization tank, and the heated steam is supplied to the heat exchanger via the analog steam adjusting valve. While supplying heat to the circulating water circulating in the sterilization tank and injecting this circulating water into the sterilization tank to heat the aerated retort food, a high pressure air pressure corresponding to the circulating high temperature water is converted to an analog pressure control valve. Supplied to the sterilization tank through the sterilization tank, and controls the analog steam adjustment valve and analog pressure adjustment valve in time series along the temperature- time transfer curve calculated in advance from the type of food and its amount or size. by, it is possible to perform optimum sterilization treatment in aerated retort food, and the sterilizing object
Sterilization can be performed along the temperature-time transition curve regardless of the capacity of
Since it is possible, the quality of the sterilized food can be maintained at a stable quality. Further, conventionally, in order to control the temperature in the sterilization tank, a steam adjustment valve that adjusts the heating steam supplied to the heat exchanger and a steam adjustment valve that bypasses the heating steam when the temperature in the sterilization tank rises too much. In addition, a pressure control valve that regulates the inflowing air pressure to control the pressure in the sterilization tank and a pressure control valve that lowers the pressure by bypassing when the pressure in the sterilization tank rises too much were required. However, the same degree of control as in the conventional case can be performed by each one of the analog steam adjusting valve and the analog pressure adjusting valve, and the control device can be simplified and the cost of the entire device can be reduced.
Claims (1)
環する循環水と熱交換するとともに、密閉された槽内を
所定空気圧に加圧して槽内に載置した不活性ガス置換し
た含気レトルト食品を殺菌処理してなる含気調理殺菌機
において、 前記熱交換器に流入する加熱蒸気の流量を制御するアナ
ログ蒸気調整弁と、前記殺菌槽内に加圧する空気圧力を
制御するアナログ圧力調整弁を設け、 制御盤にアナログ蒸気調整弁およびアナログ圧力調整弁
を制御するプログラムコントローラを配設し、 外部インターフェースから所定の温度推移曲線に追従し
て入力された複数の温度データおよび圧力データを時系
列に記憶するプログラムコントローラのデータメモリ
と、 前記殺菌槽内の温度センサと圧力センサの出力と前記デ
ータメモリに記憶された温度データおよび圧力データと
を逐次時系列に比較するデータ比較手段と、 データ比較手段の出力に基づき前記アナログ蒸気調整弁
およびアナログ圧力調整弁を制御して殺菌槽内の温度と
圧力を所定の温度推移曲線に追従させる調整手段とを有
することを特徴とする含気調理殺菌機。1. The heating steam is introduced into a heat exchanger to exchange heat with circulating water circulating in the sterilization tank, and the sealed tank is pressurized to a predetermined air pressure to replace an inert gas placed in the tank. In an air-containing cooking sterilizer obtained by sterilizing an air-containing retort food, an analog steam control valve for controlling the flow rate of heating steam flowing into the heat exchanger, and an analog for controlling the air pressure to be pressurized in the sterilization tank. A pressure regulating valve is installed, and a control panel is equipped with an analog steam regulating valve and a program controller that controls the analog pressure regulating valve. Plural temperature data and pressure data are input from an external interface following a predetermined temperature transition curve. The data memory of the program controller that stores the time series, the output of the temperature sensor and the pressure sensor in the sterilization tank and the temperature stored in the data memory Data comparing means for sequentially comparing data and pressure data in time series, and the analog steam adjusting valve and the analog pressure adjusting valve are controlled based on the output of the data comparing means to control the temperature and pressure in the sterilization tank to a predetermined temperature. An aerated cooking and sterilizing machine comprising: an adjusting unit that follows a transition curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4982194A JPH07231770A (en) | 1994-02-23 | 1994-02-23 | Air-containing cooking and sterilizing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4982194A JPH07231770A (en) | 1994-02-23 | 1994-02-23 | Air-containing cooking and sterilizing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07231770A true JPH07231770A (en) | 1995-09-05 |
Family
ID=12841777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4982194A Pending JPH07231770A (en) | 1994-02-23 | 1994-02-23 | Air-containing cooking and sterilizing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07231770A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11190665A (en) * | 1997-12-26 | 1999-07-13 | T & D:Kk | Temperature measuring device and temperature measuring method |
| JP2011045249A (en) * | 2009-08-25 | 2011-03-10 | Samson Co Ltd | Heat sterilization device of pneumatic container |
| JP2012217391A (en) * | 2011-04-09 | 2012-11-12 | Samson Co Ltd | Heat sterilization device |
| KR101413288B1 (en) * | 2012-03-23 | 2014-06-27 | 주식회사 경한 | Temperature control apparatus of sterilizer using response delay compensation of valve and method thereof |
-
1994
- 1994-02-23 JP JP4982194A patent/JPH07231770A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11190665A (en) * | 1997-12-26 | 1999-07-13 | T & D:Kk | Temperature measuring device and temperature measuring method |
| JP2011045249A (en) * | 2009-08-25 | 2011-03-10 | Samson Co Ltd | Heat sterilization device of pneumatic container |
| JP2012217391A (en) * | 2011-04-09 | 2012-11-12 | Samson Co Ltd | Heat sterilization device |
| KR101413288B1 (en) * | 2012-03-23 | 2014-06-27 | 주식회사 경한 | Temperature control apparatus of sterilizer using response delay compensation of valve and method thereof |
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