JP3672600B2 - Humidification amount control method in solid-state culture device - Google Patents
Humidification amount control method in solid-state culture device Download PDFInfo
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- JP3672600B2 JP3672600B2 JP27735094A JP27735094A JP3672600B2 JP 3672600 B2 JP3672600 B2 JP 3672600B2 JP 27735094 A JP27735094 A JP 27735094A JP 27735094 A JP27735094 A JP 27735094A JP 3672600 B2 JP3672600 B2 JP 3672600B2
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- air
- humidity
- humidification
- water
- humidifier
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Description
【０００１】
【産業上の利用分野】
本発明は、醤油製造等の醸造工業又は酵素製造工業等で使用している固体培養装置における加湿量制御方法に関するものである。
【０００２】
【従来の技術】
従来、醤油麹、麩麹等の固体培養には100％の飽和に近い湿度の空気が必要とされるため、加湿水量は、送風する空気の相対湿度が100％以上になる過剰量を噴霧していた。また、加湿装置の下流側に湿度センサを設置して加湿調整している例は実公昭60-18075号にみられる。しかし、飽和付近の湿度(RH100％付近)が感度よく測定できないため制御が困難であった。
【０００３】
これら、従来の方法では基質に送風する空気の湿度が過飽和になりやすく、吸水しやすい基質においては部分的に水分過多となり、品質が低下する。
【０００４】
通常、多孔板上に基質を堆積して下向から送風するが、この場合多孔板に接触する部分が水分過多となり、品質低下、雑菌の発生が部分的におこる。RH92％〜RH100％未満に加湿が調節できれば、このような欠点は解消される。
【０００５】
そこで、特開平６-78号では、固体培養装置本体へ供給する空気の流れに対して、加湿装置より上流側で温度及び湿度を測定し、加湿装置より下流側で温度を測定し、それらの測定データから所定の湿度にするための加湿水量を演算して加湿装置から所定量の水を供給するようにしている。
【０００６】
この方式によると培養装置より出る空気はほぼRH100％である。しかし、温度調節のために外気を導入したり、送風機を通過して加熱されるとRHは下がる。従って、加湿前の温・湿度が正確に測定でき、次いで加湿後の温度測定のみで、加湿後の湿度をコンピュータ制御で予測でき、その予測値に基いて定量ポンプを動かすこと等で加湿装置を調整すれば容易に所定湿度に保持できる特徴がある。
【０００７】
【発明が解決しようとする課題】
本発明は上記特開平６-78号の加湿方法に更に検討を加えて、加湿精度を高めて培養装置における高品質の麹を得ようとするものである。
【０００８】
【課題を解決するための手段】
上記課題を検討した結果、本発明は、固体培養装置本体へ供給する空気の流れに対して、加湿装置より上流側で乾球温度及び湿球温度又は乾球温度及び湿度を測定し、それらの測定データと供給する空気の風量と加湿装置での加湿効率から所定の湿度にするための加湿量を演算して加湿量を制御することとした。
【０００９】
基質に供給する空気の風量は、送風機の上流側又は下流側の風速を測定して風量に換算しても、送風機の回転数から風量に換算してもいずれでもよい。加湿ノズルから噴霧された水の粒子が気化する前に空気調和機の内壁面に接触した場合はドレン水となり、加湿効率が低下するため、事前に各風量における加湿効率を測定しておく必要がある。
【００１０】
また、加湿の方法は、超音波加湿機を利用しても、空気と水を同時に噴霧する２流体ノズルを利用しても、更には、高圧ポンプで水を噴霧してもよく、加湿水量の調節は定量ポンプの能力を比例制御する方法、加湿ノズルの数を変更する方法等いずれでもよい。
【００１１】
【作用】
本発明によると、加湿装置より上流側で乾球温度及び湿球温度又は乾球温度及び湿度を測定するのみで、そのデータをもとに所定の湿度にするための空気線図にしたがう加湿水量が演算され、それによって加湿量が制御されるので、加湿後の湿度をコンピュータ制御で予測できる。例えば、その予測値に基いて定量ポンプを動かすこと等で加湿装置を調整すれば容易に所定湿度に保持できる。
【００１２】
基質に送風する温度調節と湿度調節を分離し、送風量及び加湿効率を加湿水量の演算に加えたことにより湿度制御の自動化も容易となる。
【００１３】
【実施例】
図１は本発明の加湿水量制御方法に使用する固体培養装置の一例を示す断面図である。この装置は常法通り吹込ダクト８内に設定した温度センサ９からの信号を送風温調節計３に入力して吸気ダンパ10、中間ダンパ11、排気ダンパ12、冷水ポンプ13を制御することにより固体培養装置本体５に送風する空気を所定の温度に調節するようになっている。
【００１４】
本実施例は、加湿装置として空気調和装置７の内部に設置した加湿ノズル６より上流側に設けた乾球温度センサ１、湿球温度センサ２及び風速センサ４からの信号をそれぞれ温度変換器14及び風量変換器15に入力して加湿ノズル上流側の空気の乾球温度、湿球温度、風量の現在値を加湿水量演算器16に入力することを特徴としている。加湿水量演算器16にはあらかじめ加湿ノズル下流側の設定湿度と各風量での加湿効率を入力しておき、これらのデータから加湿水量を演算して定量ポンプ17、ノズルコントロールバルブ18を制御して加湿ノズル６より所定量の水を噴霧する。
【００１５】
具体的実施態様は次のとおりである。原料として、脱脂大豆1,200Kg、小麦1,200kgを常法通り原料処理、混合、種付けを行って、固体培養装置本体５内の多孔板19上に堆積して、下から通風して麹菌を増殖させ醤油麹を生産した。
【００１６】
加湿量の制御は次のようであった。一例として示すと、加湿ノズル６の上流側の乾球温度が28.5℃、湿球温度が24.1℃、送風量が118m3/minであった場合、送風する空気の相対湿度設定を99％とすると、送風量118m3/minの場合の加湿効率は95％であるため、空気線図に基づいて加湿水量演算器16で演算すると16.1Kg/hrの水を噴霧すればよいことになり、これに従って定量ポンプ17を制御した。
【００１７】
培養は約42時間継続し、その間数回基質を撹拌した。撹拌を行う直前に多孔板19のすぐ上の基質をサンプリングしたが、水分過多になっていなかった。また加湿ノズルの上流側で行なう乾球温度,湿球温度及び風速の測定は高湿度でないため容易に行うことが可能であった。その結果として目的とする雑菌数の少ない醤油麹を収率よく生産することができた。
【００１８】
【発明の効果】
本方法により、送風する空気の湿度が過飽和にならないため、基質が部分的に水分過多になることがなく、固体培養装置本体内壁面及び多孔板への結露水も減少して雑菌数が低下し、品質が向上する。また、能率的な加湿管理により、噴霧水量が減少し、製造コストの低下にもつながる効果が得られた。加えて、基質に送風する温度調節と湿度調節を分離し、送風量及び加湿効率を加湿水量の演算に加えたことにより湿度制御の自動化も容易となった。
【図面の簡単な説明】
【図１】本方法に使用する装置の一例を示す概略説明図である。
【符号の説明】
１ 乾球温度センサ
２ 湿球温度センサ
３ 送風温調節計
４ 風速センサ
５ 固体培養装置本体
６ 加湿ノズル
７ 空気調和装置
８ 吹込ダクト
９ 温度センサ
10 吸気ダンパ
11 中間ダンパ
12 排気ダンパ
13 冷水ポンプ
14 温度変換器
15 風量変換器
16 加湿水量演算器
17 定量ポンプ
18 ノズルコントロールバルブ
19 多孔板[0001]
[Industrial application fields]
The present invention relates to a method for controlling the amount of humidification in a solid culture apparatus used in brewing industries such as soy sauce manufacturing or enzyme manufacturing industries.
[0002]
[Prior art]
Conventionally, solid cultures such as soy sauce koji, koji, etc. require air with a humidity close to 100% saturation. It was. An example of humidity adjustment by installing a humidity sensor on the downstream side of the humidifier can be found in Japanese Utility Model No. 60-18075. However, the humidity near saturation (roughly 100% RH) cannot be measured with high sensitivity, making it difficult to control.
[0003]
In these conventional methods, the humidity of the air blown to the substrate is likely to be oversaturated, and the substrate that is likely to absorb water partially becomes excessively watery, resulting in a reduction in quality.
[0004]
Usually, a substrate is deposited on the perforated plate and blown from below. In this case, the portion in contact with the perforated plate becomes excessively watery, resulting in partial deterioration of quality and generation of various bacteria. If the humidification can be adjusted to RH92% to less than RH100%, such drawbacks are eliminated.
[0005]
Therefore, in Japanese Patent Laid-Open No. 6-78, the temperature and humidity are measured upstream of the humidifier and the temperature is measured downstream of the humidifier with respect to the air flow supplied to the solid culture device body. The amount of humidified water for obtaining a predetermined humidity is calculated from the measurement data, and a predetermined amount of water is supplied from the humidifier.
[0006]
According to this method, the air coming out of the culture device is almost RH100%. However, RH falls when outside air is introduced for temperature control or when the air passes through a blower and is heated. Therefore, the temperature and humidity before humidification can be measured accurately, then the humidity after humidification can be predicted by computer control only by measuring the temperature after humidification, and the humidifier can be operated by moving the metering pump based on the predicted value. If adjusted, it has a feature that it can be easily maintained at a predetermined humidity.
[0007]
[Problems to be solved by the invention]
The present invention is to further study the humidification method of the above-mentioned JP-A-6-78, and to improve the humidification accuracy so as to obtain a high-quality koji in the culture apparatus.
[0008]
[Means for Solving the Problems]
As a result of studying the above problems, the present invention measures the dry bulb temperature and wet bulb temperature or dry bulb temperature and humidity upstream of the humidifier with respect to the air flow supplied to the solid culture device main body. The humidification amount is controlled by calculating the humidification amount for obtaining a predetermined humidity from the measurement data, the air volume of the supplied air, and the humidification efficiency of the humidifier.
[0009]
The air volume supplied to the substrate may be converted into an air volume by measuring the upstream or downstream air speed of the blower, or may be converted into an air volume from the rotational speed of the blower. If the water sprayed from the humidifying nozzle comes into contact with the inner wall of the air conditioner before it vaporizes, it becomes drain water, and the humidifying efficiency decreases. is there.
[0010]
The humidification method may be an ultrasonic humidifier, a two-fluid nozzle that sprays air and water at the same time, or may spray water with a high-pressure pump. The adjustment may be performed by a method of proportionally controlling the capacity of the metering pump or a method of changing the number of humidifying nozzles.
[0011]
[Action]
According to the present invention, only by measuring the dry bulb temperature and wet bulb temperature or dry bulb temperature and humidity upstream from the humidifier, the amount of humidified water according to the air diagram for obtaining a predetermined humidity based on the data Is calculated and the amount of humidification is thereby controlled, so that the humidity after humidification can be predicted by computer control. For example, if the humidifier is adjusted by moving a metering pump based on the predicted value, it can be easily maintained at a predetermined humidity.
[0012]
Humidity control can be easily automated by separating temperature control and humidity control for blowing air to the substrate and adding air flow and humidification efficiency to the calculation of the amount of humidified water.
[0013]
【Example】
FIG. 1 is a cross-sectional view showing an example of a solid culture apparatus used in the humidified water amount control method of the present invention. This apparatus inputs a signal from a temperature sensor 9 set in the blowing duct 8 to a blower temperature controller 3 as usual, and controls an intake damper 10, an intermediate damper 11, an exhaust damper 12, and a chilled water pump 13 to control the solid state. The air blown to the culture apparatus main body 5 is adjusted to a predetermined temperature.
[0014]
In this embodiment, signals from the dry bulb temperature sensor 1, the wet bulb temperature sensor 2 and the wind speed sensor 4 provided on the upstream side of the humidification nozzle 6 installed inside the air conditioner 7 as a humidifier are respectively converted into temperature converters 14. The present invention is characterized in that the current value of the dry bulb temperature, the wet bulb temperature and the air volume of the air upstream of the humidifying nozzle is inputted to the humidifying water quantity calculator 16 by being inputted to the air quantity converter 15. The humidifying water amount calculator 16 inputs in advance the set humidity downstream of the humidifying nozzle and the humidifying efficiency at each air volume, calculates the humidifying water amount from these data, and controls the metering pump 17 and
[0015]
Specific embodiments are as follows. As raw materials, 1,200 kg of defatted soybeans and 1,200 kg of wheat are processed, mixed and seeded as usual, and deposited on the perforated plate 19 in the main body of the solid culture device 5 and ventilated from below to propagate the koji mold. Produced soy sauce cake.
[0016]
The amount of humidification was controlled as follows. As an example, if the dry bulb temperature on the upstream side of the humidifying nozzle 6 is 28.5 ° C., the wet bulb temperature is 24.1 ° C., and the air flow rate is 118 m 3 / min, the relative humidity setting of the blown air is 99%. Since the humidification efficiency is 95% when the air flow rate is 118m 3 / min, when calculated by the humidification water amount calculator 16 based on the air diagram, it is necessary to spray 16.1Kg / hr of water. The metering pump 17 was controlled.
[0017]
Incubation was continued for about 42 hours, during which the substrate was agitated several times. The substrate immediately above the perforated plate 19 was sampled immediately before stirring, but was not excessive in water. Also, the dry bulb temperature, wet bulb temperature and wind speed measurements upstream of the humidifying nozzle could be easily performed because the humidity was not high. As a result, the desired soy sauce cake with a small number of miscellaneous bacteria could be produced with high yield.
[0018]
【The invention's effect】
By this method, since the humidity of the air to be blown does not become supersaturated, the substrate does not partially become excessively watery, the condensed water on the inner wall surface of the solid culture device main body and the porous plate is reduced, and the number of germs is reduced. , Improve the quality. In addition, efficient humidification management reduced the amount of water sprayed, and the effect of reducing the manufacturing cost was obtained. In addition, temperature control and humidity control for blowing air to the substrate are separated, and automation of humidity control is facilitated by adding the air flow rate and humidification efficiency to the calculation of the humidified water amount.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory diagram showing an example of an apparatus used in the present method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dry bulb temperature sensor 2 Wet bulb temperature sensor 3 Blower temperature controller 4 Air velocity sensor 5 Solid culture apparatus main body 6 Humidification nozzle 7 Air conditioner 8 Blowing duct 9 Temperature sensor
10 Intake damper
11 Intermediate damper
12 Exhaust damper
13 Cold water pump
14 Temperature transducer
15 Airflow converter
16 Humidification water amount calculator
17 Metering pump
18 Nozzle control valve
19 Perforated plate
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27735094A JP3672600B2 (en) | 1994-11-11 | 1994-11-11 | Humidification amount control method in solid-state culture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27735094A JP3672600B2 (en) | 1994-11-11 | 1994-11-11 | Humidification amount control method in solid-state culture device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08131155A JPH08131155A (en) | 1996-05-28 |
| JP3672600B2 true JP3672600B2 (en) | 2005-07-20 |
Family
ID=17582309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27735094A Expired - Fee Related JP3672600B2 (en) | 1994-11-11 | 1994-11-11 | Humidification amount control method in solid-state culture device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3672600B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3044192U (en) * | 1997-04-08 | 1997-12-16 | 永田醸造機械株式会社 | Blower of raw material cooling device |
| JP2005331862A (en) * | 2004-05-21 | 2005-12-02 | Inst Of Research & Innovation | Microscope observation culture equipment |
| CN115281022B (en) * | 2022-07-21 | 2024-06-11 | 中国农业科学院农田灌溉研究所 | Humidification cooling device and method for reducing harm of dry hot air |
| JP7272723B1 (en) * | 2022-11-24 | 2023-05-12 | 株式会社フジワラテクノアート | Aerated solid culture apparatus and aerated solid culture method |
-
1994
- 1994-11-11 JP JP27735094A patent/JP3672600B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08131155A (en) | 1996-05-28 |
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