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JP4834813B2 - Aeration and stirring fermenter - Google Patents
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JP4834813B2 - Aeration and stirring fermenter - Google Patents

Aeration and stirring fermenter Download PDF

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JP4834813B2
JP4834813B2 JP2005329081A JP2005329081A JP4834813B2 JP 4834813 B2 JP4834813 B2 JP 4834813B2 JP 2005329081 A JP2005329081 A JP 2005329081A JP 2005329081 A JP2005329081 A JP 2005329081A JP 4834813 B2 JP4834813 B2 JP 4834813B2
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aeration
stirring
fermenter
tank body
inclined portion
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JP2007136250A (en
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陽平 中山
徹 粕谷
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Mizkan Group Corp
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12J—VINEGAR; PREPARATION OR PURIFICATION THEREOF
    • C12J1/00—Vinegar; Preparation or purification thereof
    • C12J1/10—Apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
    • B01F23/23342—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer the stirrer being of the centrifugal type, e.g. with a surrounding stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Description

本発明は、例えば、食酢用の深部発酵槽として用いて好適な通気攪拌発酵槽に関する。   The present invention relates to an aeration and stirring fermenter suitable for use as a deep fermenter for vinegar, for example.

この種の通気攪拌発酵槽として、図６に示すものがある（例えば、特許文献１参照）。   There exists what is shown in FIG. 6 as this kind of aeration stirring fermenter (for example, refer patent document 1).

この通気攪拌発酵槽１は、図６に示すように、発酵液Ｓを充填する直胴型の槽本体２を有している。この槽本体２は、円筒状の胴部２ａと、この胴部２ａの上，下側に位置する蓋部２ｂ及び底部２ｃとを備えている。   As shown in FIG. 6, the aeration and stirring fermenter 1 has a straight body tank body 2 filled with a fermentation broth S. The tank body 2 includes a cylindrical body 2a, and a lid 2b and a bottom 2c located above and below the body 2a.

そして、槽本体２内に充填された発酵液Ｓは、上方に湾曲した皿状の底部２ｃの中央に配設されてモータ３の駆動軸４により回転する自吸式の攪拌翼（ローター）５により通気攪拌されるようになっている。   The fermented liquid S filled in the tank body 2 is arranged in the center of the dish-shaped bottom portion 2c curved upward and is rotated by the drive shaft 4 of the motor 3 with a self-priming stirring blade (rotor) 5. It is designed to be aerated and stirred.

特公昭４６−４１５７号公報Japanese Examined Patent Publication No. 46-4157

特開昭５３−８８３９７号公報Japanese Patent Laid-Open No. 53-88397

しかしながら、前記従来の通気攪拌発酵槽１では、直胴型の槽本体２の底部２ｃが上方に湾曲した皿状になっているので、通気効率を高めるために自吸式の攪拌翼５の上方においてある程度の深さの液量が溜まるまで発酵液Ｓを充填しなければならず、低液量からの通気攪拌を安定して実施することは難しかった。   However, in the conventional aeration and stirring fermenter 1, the bottom 2c of the straight body tank body 2 has a dish-like shape that is curved upward. Therefore, it is difficult to stably carry out aeration and agitation from a low liquid volume until the liquid volume of a certain depth has been accumulated.

また、図６に矢印で示すように、自吸式の攪拌翼５より吐出される気泡流が槽本体２の胴部２ａに当たって、そのまま垂直に上昇するため、槽本体２内の発酵液Ｓの流れが悪くなり、発酵効率が悪かった（図４（ｂ）参照）。   Further, as shown by arrows in FIG. 6, since the bubble flow discharged from the self-priming stirring blade 5 hits the trunk portion 2a of the tank body 2 and rises vertically as it is, the fermentation liquid S in the tank body 2 The flow was poor and the fermentation efficiency was poor (see FIG. 4 (b)).

そこで、本発明は、前記した課題を解決すべくなされたものであり、低液量からの通気攪拌を安定して実施することができると共に、発酵効率を高めることができる通気攪拌発酵槽を提供することを目的とする。   Therefore, the present invention has been made to solve the above-described problems, and provides an aeration and stirring fermenter that can stably perform aeration and stirring from a low liquid volume and can increase fermentation efficiency. The purpose is to do.

請求項１の発明は、円筒状の胴部と該胴部の上，下側に位置する蓋部及び底部を備えた槽本体内に発酵液を充填し、この槽本体の底部の中央に配設された攪拌翼の回転で前記発酵液を通気攪拌するようにした通気攪拌発酵槽において、前記槽本体の胴部の下端部と底部の外周部との間に断面逆ハ字状で円環状の傾斜部を連続して形成し、かつ、前記槽本体の胴部下端部の直径に対する底部の外周部の直径が７０％以下に設定されていることを特徴とする。 According to the first aspect of the present invention, a fermented liquid is filled in a tank body provided with a cylindrical body, a lid part and a bottom part located above and below the body part, and arranged at the center of the bottom of the tank body. In the aeration and agitation fermenter in which the fermentation broth is aerated and agitated by rotation of a stirring blade provided, an annular cross-section is formed between the lower end of the trunk part and the outer peripheral part of the bottom of the tank body. And the diameter of the outer peripheral part of the bottom part with respect to the diameter of the lower end part of the trunk part of the tank body is set to 70% or less .

請求項２の発明は、請求項１記載の通気攪拌発酵槽であって、前記傾斜部を逆円錐台状に形成したことを特徴とする。   A second aspect of the present invention is the aeration and stirring fermenter according to the first aspect, wherein the inclined portion is formed in an inverted truncated cone shape.

請求項３の発明は、請求項２記載の通気攪拌発酵槽であって、前記逆円錐台状の傾斜部の元の円錐の頂角を６０°〜１２０°に設定したことを特徴とする。   The invention of claim 3 is the aeration and stirring fermenter according to claim 2, wherein the apex angle of the original cone of the inverted truncated cone-shaped inclined part is set to 60 ° to 120 °.

以上説明したように、請求項１の発明によれば、槽本体の胴部の下端部と底部の外周部との間に断面逆ハ字状で円環状の傾斜部を連続して形成したことにより、低液量からの通気攪拌を安定して実施することができ、発酵効率を高めることができる。   As described above, according to the first aspect of the present invention, an annular inclined portion having an inverted cross-section is continuously formed between the lower end portion of the body portion of the tank body and the outer peripheral portion of the bottom portion. As a result, it is possible to stably carry out aeration and agitation from a low liquid amount, and to improve fermentation efficiency.

請求項２の発明によれば、傾斜部を逆円錐台状に形成したことにより、攪拌翼より吐出される気泡流を逆円錐台状の傾斜部に沿って槽本体の全面に行き渡らせることができ、発酵効率を高めることができる。   According to the invention of claim 2, by forming the inclined portion in the shape of an inverted truncated cone, the bubble flow discharged from the stirring blade can be distributed over the entire surface of the tank body along the inclined portion of the inverted truncated cone shape. And the fermentation efficiency can be increased.

請求項３の発明によれば、逆円錐台状の傾斜部の元の円錐の頂角を６０°〜１２０°に設定したことにより、発酵液の流れを良くすることができ、発酵効率をより一段と高めることができる。   According to the invention of claim 3, by setting the apex angle of the original cone of the inverted frustoconical inclined portion to 60 ° to 120 °, the flow of the fermentation liquor can be improved, and the fermentation efficiency is further improved. It can be further enhanced.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の実施形態の通気攪拌発酵槽を示す断面図、図２は同発酵槽の傾斜部の説明図、図３は同発酵槽の槽内液量と液高さの関係を示す説明図、図４（ａ）は同発酵槽の通気攪拌状態（発酵液の流れ）を示す説明図である。   FIG. 1 is a cross-sectional view showing an aeration and stirring fermenter according to an embodiment of the present invention, FIG. 2 is an explanatory view of an inclined portion of the fermenter, and FIG. 3 shows the relationship between the amount of liquid in the fermenter and the liquid height. Explanatory drawing and FIG. 4 (a) are explanatory drawings which show the aeration stirring state (flow of fermentation liquid) of the fermenter.

図１に示すように、通気攪拌発酵槽１０は、食酢（酢酸）用の深部発酵槽として用いられるものであり、金属製の槽本体１１を有している。この槽本体１１は、金属製で円筒状の胴部１２と、この胴部１２の上側開口部１２ａを覆う下方に湾曲した金属製で皿状の蓋部１３と、胴部１２の下側開口部１２ｂを覆う金属製で逆円錐台状の傾斜部１４及び中央が窪んだ金属製の底部１５を備えている。これら胴部１２と蓋部１３と傾斜部１４及び底部１５は溶接等の手段によりそれぞれ固着されている。また、傾斜部１４には複数本の脚部１６を取り付けてある。   As shown in FIG. 1, the aeration and stirring fermenter 10 is used as a deep fermenter for vinegar (acetic acid) and has a metal tank body 11. The tank body 11 is made of a metal cylindrical body 12, a downwardly curved metal dish-shaped lid 13 covering the upper opening 12 a of the body 12, and a lower opening of the body 12. An inclined frustoconical portion 14 made of metal covering the portion 12b and a metal bottom portion 15 having a depressed center are provided. The trunk portion 12, the lid portion 13, the inclined portion 14, and the bottom portion 15 are fixed by means such as welding. A plurality of leg portions 16 are attached to the inclined portion 14.

図１及び図２に示すように、槽本体１１の傾斜部１４は、正円錐を底部（底面）１５に対して水平に切断した逆円錐台状（断面逆ハ字状で円環状）に形成してあり、胴部１２の下側開口部（下端部）１２ｂと底部１５の外周部１５ｂとの間に位置している。そして、これら胴部１２の下側開口部１２ｂと逆円錐台状の傾斜部１４の上側周縁部１４ａ及び該傾斜部１４の下側周縁部１４ｂと底部１５の外周部１５ｂは溶接等の手段によりそれぞれ固着されている。   As shown in FIG. 1 and FIG. 2, the inclined portion 14 of the tank body 11 is formed in an inverted truncated cone shape (annular shape with a cross-section inverted C shape) obtained by cutting a regular cone horizontally with respect to a bottom portion (bottom surface) 15. It is located between the lower opening (lower end) 12 b of the body 12 and the outer peripheral portion 15 b of the bottom 15. The lower opening 12b of the body 12 and the upper peripheral edge 14a of the inverted frustoconical inclined portion 14 and the lower peripheral edge 14b of the inclined portion 14 and the outer peripheral portion 15b of the bottom 15 are formed by means such as welding. Each is fixed.

また、図２に示すように、逆円錐台状の傾斜部１４の元の円錐の頂角θは例えば９０°に設定してあり、逆円錐台状の傾斜部１４の上辺部分の長さＭは例えば３．６ｍ（即ち、胴部１２の直径は３．６ｍ）に、下辺部分の長さＮは例えば１．８ｍに、その高さＨは例えば０．９ｍに、それぞれ設定してある。これにより、傾斜部１４と底部１５の交わる角度αは４５°に設定してある。さらに、図１に示すように、胴部１２の高さＴは２．１ｍに設定してある。   Further, as shown in FIG. 2, the apex angle θ of the original cone of the inverted truncated cone-shaped inclined portion 14 is set to 90 °, for example, and the length M of the upper side portion of the inverted truncated cone-shaped inclined portion 14 is set. Is set to 3.6 m (that is, the diameter of the body 12 is 3.6 m), the length N of the lower side portion is set to 1.8 m, for example, and the height H is set to 0.9 m, for example. Thus, the angle α at which the inclined portion 14 and the bottom portion 15 intersect is set to 45 °. Further, as shown in FIG. 1, the height T of the body 12 is set to 2.1 m.

図１に示すように、槽本体１１の底部１５はその中央部分１５ａが下側に凹んでおり、その中央に連結部（シール部）１７を介して自吸式の攪拌翼１８を設置してある。この自吸式の攪拌翼１８の中央には、モータ１９の駆動軸１９ａの先端部を固定してある。このモータ１９により、自吸式の攪拌翼１８は例えば毎分８００回転（ｒｐｍ）で回転して、槽本体１１内に充填された発酵液Ｓを通気攪拌するようになっている。即ち、自吸式の攪拌翼１８は、回転することで羽根（翼）の裏側に負圧を発生させ、この負圧により外部から空気を吸い込ませ、その空気を羽根が発酵液Ｓに及ぼす剪断作用によって細分化し、さらに発酵液Ｓと共に吐出させて槽本体１１内に分散させるものである。また、自吸式の攪拌翼１８は、例えば直径０．３ｍのものを用いており、底部１５の中心より例えば０．１ｍ上に設置されている。   As shown in FIG. 1, the bottom portion 15 of the tank body 11 has a central portion 15 a recessed downward, and a self-priming stirring blade 18 is installed in the center via a connecting portion (seal portion) 17. is there. At the center of the self-priming agitating blade 18, the tip of the drive shaft 19 a of the motor 19 is fixed. The motor 19 causes the self-priming stirring blade 18 to rotate at, for example, 800 revolutions per minute (rpm) to aerate and agitate the fermentation liquid S filled in the tank body 11. That is, the self-priming agitating blade 18 rotates to generate a negative pressure on the back side of the blade (blade), and the negative pressure causes air to be sucked in from the outside. It is subdivided by the action, and further discharged together with the fermentation broth S and dispersed in the tank body 11. The self-priming agitating blade 18 has a diameter of 0.3 m, for example, and is installed, for example, 0.1 m above the center of the bottom portion 15.

また、図１に示すように、自吸式の攪拌翼１８の上部中央には、連結部（シール部）２０を介して外気を導入する空気導入管２１を配置してある。また、連結部２０には発酵液Ｓを充填する発酵液送入管２２の排出口２２ａを対向させている。尚、槽本体１１の胴部１２及び傾斜部１４内には、発酵液Ｓを冷却する複数の蛇管２３を配置してある。また、蓋部１３の中央には、排気用のマンホール部１３ａを設けてある。さらに、槽本体１１の底部１５には、発酵液Ｓを外部に排出する発酵液排出管（図示省略）を取り付けてある。   As shown in FIG. 1, an air introduction pipe 21 that introduces outside air through a connecting portion (seal portion) 20 is disposed in the upper center of the self-priming stirring blade 18. Moreover, the discharge port 22a of the fermented liquid supply pipe | tube 22 with which the fermented liquid S is filled is made to oppose the connection part 20. As shown in FIG. In addition, in the trunk | drum 12 and the inclination part 14 of the tank main body 11, the some snake tube 23 which cools the fermentation liquid S is arrange | positioned. In addition, an exhaust manhole portion 13 a is provided in the center of the lid portion 13. Furthermore, a fermentation liquid discharge pipe (not shown) for discharging the fermentation liquid S to the outside is attached to the bottom 15 of the tank body 11.

以上実施形態の通気攪拌発酵槽１０によれば、槽本体１１の円筒状の胴部１２の下側開口部１２ｂと底部１５の外周部１５ｂとの間に逆円錐台状の傾斜部１４を連続して形成すると共に、該逆円錐台状の傾斜部１４の元の円錐の頂角を９０°に設定したことにより、従来の直胴型で底部２ｃが皿状の通気攪拌発酵槽１と比較して同じ液位に達するまでの発酵液Ｓの充填液量は少なくて済む。即ち、従来の直胴皿型の通気攪拌発酵槽１の胴部２ａの直径と本実施形態の逆円錐台型の通気攪拌発酵槽１０の胴部１２の直径を同径の３．６ｍとした場合に、図３に示すように、安定して通気可能になるのは、従来の直胴皿型の通気攪拌発酵槽１では０．７５ｍ３であるのに対し、本実施形態の逆円錐台型の通気攪拌発酵槽１０では０．４０ｍ３であった。これにより、低液量からの通気攪拌を安定して実施することができる。   According to the aeration and stirring fermenter 10 of the above embodiment, the inverted frustoconical inclined part 14 is continuously connected between the lower opening 12b of the cylindrical body 12 of the tank body 11 and the outer peripheral part 15b of the bottom 15. In addition, the apex angle of the original cone of the inverted frustoconical inclined portion 14 is set to 90 °. And the amount of filling liquid of the fermentation liquid S until it reaches the same liquid level may be small. That is, the diameter of the trunk portion 2a of the conventional straight barrel dish-type agitating and stirring fermenter 1 and the diameter of the trunk portion 12 of the inverted truncated cone-shaped agitating and stirring fermenter 10 of the present embodiment are set to 3.6 m. In this case, as shown in FIG. 3, it is 0.75 m 3 in the conventional straight body dish-type aeration and stirring fermenter 1 that allows stable ventilation, whereas the inverted truncated cone type of the present embodiment. It was 0.40 m3 in the aeration and stirring fermenter 10. Thereby, the aeration stirring from the low liquid amount can be carried out stably.

また、自吸式の攪拌翼１８より吐出される気泡流を逆円錐台状の傾斜部１４に沿って槽本体１１内の全面に行き渡らせることができ、発酵効率を高めることができる。即ち、従来の直胴皿型の通気攪拌発酵槽１では、自吸式の攪拌翼５から缶壁としての槽本体２の円筒状の胴部２ａまでの距離が長かったが、本実施形態の逆円錐台型の通気攪拌発酵槽１０では、自吸式の攪拌翼１８から缶壁としての逆円錐台状の傾斜部１４までの距離が短くなり、従来の直胴皿型の通気攪拌発酵槽１と比較して、自吸式の攪拌翼１８より吐出される気泡流が缶壁まで到達し易くなり、酸欠領域を無くすことができると共に、発酵効率を高めることができる。また、自吸式の攪拌翼１８の回転数を下げることも可能になり、モータ１９の消費電力を減少させることができる。   Moreover, the bubble flow discharged from the self-priming type stirring blade 18 can be spread over the entire surface of the tank main body 11 along the inverted frustoconical inclined portion 14, and the fermentation efficiency can be increased. That is, in the conventional straight body dish-type aeration and stirring fermenter 1, the distance from the self-priming stirring blade 5 to the cylindrical body 2a of the tank body 2 as a can wall is long. In the inverted frustoconical aeration and stirring fermenter 10, the distance from the self-priming stirring blade 18 to the inverted frustoconical inclined portion 14 serving as a can wall is shortened, and the conventional straight barrel dish aeration and stirring fermenter 10. Compared with 1, the bubble flow discharged from the self-priming agitating blade 18 can easily reach the can wall, eliminate the oxygen deficient region, and increase the fermentation efficiency. In addition, the number of revolutions of the self-priming stirring blade 18 can be lowered, and the power consumption of the motor 19 can be reduced.

さらに、従来の直胴皿型の通気攪拌発酵槽１では、図４（ｂ）に示すように、自吸式の攪拌翼５より吐出される気泡流が缶壁としての槽本体２の円筒状の胴部２ａに当たって、そのまま垂直に上昇して発酵液Ｓの流れが悪かったが、本実施形態の逆円錐台型の通気攪拌発酵槽１０では、図４（ａ）に示すように、自吸式の攪拌翼１８より吐出される気泡流が逆円錐台状の傾斜部１４に沿って流れるため、発酵液Ｓの流れが良くなり、発酵効率をより一段と高めることができる。   Furthermore, in the conventional straight body dish-type aeration and stirring fermenter 1, as shown in FIG. 4 (b), the bubble flow discharged from the self-priming stirring blade 5 is cylindrical in the tank body 2 as a can wall. 4a, the fermentation liquid S flowed vertically and the flow of the fermentation broth S was poor. However, in the inverted frustoconical aeration and stirring fermenter 10 of the present embodiment, as shown in FIG. Since the bubble flow discharged from the agitating blade 18 of the type flows along the inverted frustoconical inclined portion 14, the flow of the fermentation liquid S is improved, and the fermentation efficiency can be further enhanced.

尚、前記実施形態によれば、通気攪拌発酵槽１０を食酢（酢酸）用の深部発酵槽として用いた場合について説明したが、食酢（酢酸）用以外の醸造用等の深部発酵槽として用いても良い。   In addition, according to the said embodiment, although the case where the aeration stirring fermenter 10 was used as a deep fermentation tank for vinegar (acetic acid) was described, it was used as a deep fermentation tank for brewing other than for vinegar (acetic acid). Also good.

また、逆円錐台状の傾斜部１４の元の円錐の頂角θを９０°に設定したが、この円錐の頂角θは９０°に限定されるものではなく、自吸式の攪拌翼１８から吐出された気泡の自然な動きと対応する角度であれば、６０°〜１２０°（好ましくは、８０°〜１００°）の範囲内でも良い。さらに、逆円錐台状の傾斜部１４の上辺部分の長さＭを３．６ｍに、下辺部分の長さＮを１．８ｍにそれぞれ設定したが、上辺部分の長さＭを１ｍ〜２．５ｍの範囲内に、下辺部分の長さＮを１．５ｍ〜５ｍの範囲内にそれぞれ設定しても良い。ここで、ＭとＮは、Ｍ＝３．６ｍ
に対してＮを１〜２．５ｍの範囲内に設定できるわけで、上限は約７０％となる（６９．４％）。また、実施例のＮ＝１．８に対して上記Ｍの幅１〜２．５ｍの上限２．５ｍとすると、Ｍ当たりのＮが７２％となる。
In addition, the apex angle θ of the original cone of the inverted frustoconical inclined portion 14 is set to 90 °, but the apex angle θ of the cone is not limited to 90 °, and the self-priming stirring blade 18 The angle may be within a range of 60 ° to 120 ° (preferably 80 ° to 100 °) as long as the angle corresponds to the natural movement of bubbles discharged from the air. Further, the length M of the upper side portion of the inverted frustoconical inclined portion 14 is set to 3.6 m, and the length N of the lower side portion is set to 1.8 m, but the length M of the upper side portion is set to 1 m to 2.m. The length N of the lower side portion may be set within the range of 1.5 m to 5 m within the range of 5 m. Here, M and N are M = 3.6 m
N can be set within a range of 1 to 2.5 m, and the upper limit is about 70% (69.4%). Further, when N is 1.8 in the embodiment and the upper limit of 2.5 m is 1 to 2.5 m, the N per M is 72%.

さらに、前記実施形態によれば、槽本体１１の傾斜部１４を逆円錐台状に形成したものを用いたが、図５に示す変形例のように、外側に湾曲した断面逆ハ字状で円環状の傾斜部１４′を用いても良いことは勿論である。   Further, according to the embodiment, the tank body 11 having the inclined portion 14 formed in an inverted truncated cone shape is used. However, as in the modification shown in FIG. Of course, an annular inclined portion 14 'may be used.

本発明の実施形態の通気攪拌発酵槽を示す断面図である。It is sectional drawing which shows the aeration stirring fermenter of embodiment of this invention. 上記通気攪拌発酵槽の傾斜部の説明図である。It is explanatory drawing of the inclination part of the said aeration stirring fermenter. 上記通気攪拌発酵槽の槽内液量と液高さの関係を示す説明図である。It is explanatory drawing which shows the relationship between the liquid amount in a tank of the said aeration stirring fermentation tank, and a liquid height. （ａ）は上記通気攪拌発酵槽の通気攪拌状態（発酵液の流れ）を示す説明図、（ｂ）は従来の通気攪拌発酵槽の通気攪拌状態（発酵液の流れ）を示す説明図である。(A) is explanatory drawing which shows the aeration stirring state (flow of fermentation liquid) of the said aeration stirring fermentation tank, (b) is explanatory drawing which shows the aeration stirring state (flow of fermentation liquid) of the conventional aeration stirring fermentation tank. . 上記通気攪拌発酵槽の傾斜部の変形例を示す説明図である。It is explanatory drawing which shows the modification of the inclination part of the said aeration stirring fermenter. 従来の通気攪拌発酵槽の断面図である。It is sectional drawing of the conventional aeration stirring fermenter.

符号の説明Explanation of symbols

１０ 通気攪拌発酵槽
１１ 槽本体
１２ 円筒状の胴部
１２ｂ 下側開口部（下端部）
１３ 蓋部
１４ 逆円錐台状（断面逆ハ字状で円環状）の傾斜部
１４′ 断面逆ハ字状で円環状の傾斜部
１５ 底部
１５ｂ 外周部
１８ 自吸式の攪拌翼（攪拌翼）
Ｓ 発酵液
θ 傾斜部の元の円錐の頂角 DESCRIPTION OF SYMBOLS 10 Aeration stirring fermenter 11 Tank main body 12 Cylindrical trunk | drum 12b Lower side opening part (lower end part)
DESCRIPTION OF SYMBOLS 13 Lid part 14 Inclined part of reverse frustoconical shape (inverted cross-section in cross section and annular shape) 14 'Inclined section in cross-section of reverse cross-shape in cross section 15 Bottom 15b Outer peripheral part 18 Self-priming type stirring blade
S Fermentation liquid θ The apex angle of the original cone of the inclined part

Claims (3)

円筒状の胴部と該胴部の上，下側に位置する蓋部及び底部を備えた槽本体内に発酵液を充填し、この槽本体の底部の中央に配設された攪拌翼の回転で前記発酵液を通気攪拌するようにした通気攪拌発酵槽において、
前記槽本体の胴部の下端部と底部の外周部との間に断面逆ハ字状で円環状の傾斜部を連続して形成し、かつ、前記槽本体の胴部下端部の直径に対する底部の外周部の直径が７０％以下に設定されていることを特徴とする通気攪拌発酵槽。 A fermented liquid is filled in a tank body provided with a cylindrical body, a lid and a bottom located above and below the body, and rotation of a stirring blade disposed in the center of the bottom of the tank body In the aeration and stirring fermenter in which the fermentation broth is aerated and stirred,
A bottom portion with respect to the diameter of the lower end portion of the body portion of the tank body is formed by continuously forming an annular inclined portion having an inverted cross-sectional shape between the lower end portion of the body portion of the tank body and the outer peripheral portion of the bottom portion. The diameter of the outer peripheral part of is set to 70% or less . 請求項１記載の通気攪拌発酵槽であって、
前記傾斜部を逆円錐台状に形成したことを特徴とする通気攪拌発酵槽。 The aeration and stirring fermenter according to claim 1,
An aeration and stirring fermenter characterized in that the inclined portion is formed in an inverted truncated cone shape. 請求項１記載の通気攪拌発酵槽であって、
前記逆円錐台状の傾斜部の元の円錐の頂角を６０°〜１２０°に設定したことを特徴とする通気攪拌発酵槽。 The aeration and stirring fermenter according to claim 1,
An aeration-stirring fermenter characterized in that the apex angle of the original cone of the inverted frustoconical inclined portion is set to 60 ° to 120 °.
JP2005329081A 2005-11-14 2005-11-14 Aeration and stirring fermenter Expired - Lifetime JP4834813B2 (en)

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PCT/JP2006/312972 WO2007063621A1 (en) 2005-11-14 2006-06-29 Fermentation tank of aeration/agitation type
TW095140049A TW200728459A (en) 2005-11-14 2006-10-30 Fermentation tank with aerate type agitation function

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