JPH0687756B2 - Method and device for extraction and separation of soy milk and okara - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method and apparatus for extracting and separating soybean milk and okara, and in particular, it can be used as a simple household maker capable of easily producing soymilk and okara.

[Conventional technology]

Traditionally, processed soybean foods such as tofu, okara, or soymilk have long been popular as a daily food in Japan, and have also been attracting attention as healthy foods due to their high nutritional value and good digestion. Overseas demand is also expanding.

Here, the above-mentioned tofu is obtained by adding a coagulant such as bittern to soy milk and solidified. Okara is obtained as a by-product of soy milk production, and the basis of soybean processed food is extracted with the active ingredient of soybean. Soy milk.

In the production of this soymilk, first, a mixture of finely crushed soybean and water (Kure) is made, and the container containing this Kure is heated directly or boiled with high-temperature steam to boil the soybean, and the active ingredient is added to the water content. Produces boiled Kure which is eluted in. The soybean curd obtained here is a state in which soybean fiber residue (okara) is mixed in soymilk, and soymilk needs to be separated from these mixtures. For this reason, it has been practiced to wrap these mixtures in a filter cloth such as cotton and to squeeze and filter using a pressing device or to use a centrifugal separator.

[Problems to be Solved by the Invention]

By the way, in recent years, preference for freshly prepared foods and foods without additives has become strong, and there is a demand for easy production of soy milk, okara, or tofu at home.

Therefore, it is possible to reduce the size of the conventional manufacturing method and apply it as a simple manufacturing device. However, soy milk, okara, etc. that are consumed in ordinary households are extremely small compared to general commercial production, and it is necessary to simply downsize the extraction container and separation device used in large-scale commercial facilities. It is difficult.

For example, a small extraction container has lower thermal efficiency than a large extraction container, and heating cannot be made uniform. In addition, the press device and centrifuge used for separating soybean milk and okara by the conventional method are inevitably mechanically complicated, and it is costly impossible to apply to a simple home-use manufacturing device. there were.

An object of the present invention is to provide a method and apparatus for extracting and separating soybean milk and okara which can be applied to a simple production device for easily producing soymilk and okara at home.

[Means for Solving the Problems]

The present invention, if the mixture of soy milk and okara is a small amount, it is possible to sufficiently separate the okara by suctioning the soy milk under reduced pressure through a filtration filter, and to supply hot water for extraction and suction of the soy milk. Pays attention to the fact that a pressure increase due to heating and evaporation of water in a closed container and a pressure reduction due to condensation of water vapor in the container can be used, respectively, and based on these, the following extraction method and apparatus for soy milk and okara. Is configured.

That is, the method for extracting and separating soybean milk and okara of the present invention is such that, as described in claim 1, an extraction container containing ground soybeans and a pressure container sealed with water are connected by a communication pipe. The pressure vessel side opening of this communication pipe is immersed in water, the pressure vessel is heated, the pressure vessel is pressurized by the generated steam, and hot water and steam in the pressure vessel are passed through the communication tube. Sequentially pumped into the extraction container, the crushed soybeans are heated by this hot water and steam to extract the active ingredient, the heating in the pressure container is stopped, the pressure container is decompressed by the condensation of the steam, and the communication pipe is connected. Through suctioning the soy milk in the extraction container through and collecting it in the pressure container, and separating it by leaving the okara in the extraction container by the filtering means provided at the opening part of the communication pipe on the extraction container side. Provided It has been made.

Further, the soybean milk and okara extract / separation apparatus of the present invention is an apparatus used in the extraction / separation method, and, as described in claim 2, an extraction container in which crushed soybeans are put, and water is put in. A sealable pressure container, a heating means for heating water in the pressure container, a communication pipe for connecting the extraction container and the pressure container and having both end openings arranged near the bottom surface of each container, and the communication pipe. And a filtering means arranged at the opening on the side of the extraction container.

[Action]

In the present invention thus configured, the pressure inside the pressure vessel increases with the heating of the water inside the pressure vessel, so the opening of the communication pipe on the pressure vessel side should be placed near the bottom surface that becomes underwater. For example, the hot water heated from the communication pipe is sent to the extraction container under pressure, and the hot water heats the ground soybeans in the extraction container.

When the hot water is delivered to the extraction vessel, the water level in the pressure vessel drops, and when the water level reaches the pressure vessel-side opening of the communication pipe, high-temperature steam is supplied to the extraction vessel, and this steam causes the inside of the extraction vessel to move. The crushed soybeans are heated further. In addition, the mixture of hot water and ground soybeans in the extraction container is stirred by the momentum of the supplied steam, etc., and the active ingredient of the ground soybeans is efficiently extracted.

On the other hand, since the pressure inside the container is reduced due to the condensation of water vapor inside the pressure container due to the stop of heating, the water content (soy milk) inside the container is sucked from the communication pipe. This communication pipe is arranged with the opening on the extraction container side near the bottom surface, and soy milk is reliably collected up to the amount accumulated in the bottom of the extraction container. In addition, since the filtering means is installed in the opening portion of the communication pipe on the side of the extraction container, when soybean milk is sucked, the solid content (okara) of soybeans is filtered and remains in the extraction container. The soybean milk and the okara are separated from the soybean milk.

Therefore, after preparing water and ground soybeans, by appropriately heating and stopping the heating, soybean milk can be extracted or separated from the okara in the same apparatus, and the operation can be significantly simplified. . In addition, since each device for extraction and separation is integrated, it does not have to be a large device as in the past and does not require mechanical power such as squeezing and centrifugation, soybean milk at home It also makes it possible to easily carry out a small-scale production of okara, which achieves the above-mentioned object.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a soybean milk okara simple production device 1 for extracting and separating soybean milk and okara based on the present invention. This device 1 has a bottomed cylindrical main body case 10, a holding cylinder 21 is installed at the bottom of the case 10, and water 2 can be stored inside by using a heat permeable material. A pressure vessel 30 formed in a bottomed tubular shape is housed.

Here, the holding cylinder 21 is formed so as to substantially surround the outer circumference of the pressure container 30, and an electric heater 22 such as a sheath wire is installed spirally on the inner peripheral surface facing the pressure container 30. The electric heater 22 generates heat when energized by a power source (not shown), and can heat the pressure vessel 30. Further, the inner peripheral surface of the holding cylinder 21 is a reflecting surface 23 capable of reflecting the heat rays from the electric heater 22 toward the pressure vessel 30 side, and the electric heater 22 and the reflecting surface 23 allow water in the pressure vessel 30 to be reflected. A heating means 20 is provided for heating the.

Above the pressure vessel 30, a bottomed cylindrical extraction vessel 40 capable of storing the crushed soybeans 3 and the water 2 is accommodated.

The extraction container 40 has a peripheral surface having the same outer shape as the pressure container 30, and a step portion 41 that can come into contact with the upper end edge 31 of the pressure container 30 over the entire circumference is formed at the lower edge of the peripheral surface. The pressure container 30 and the extraction container 40 are connected to each other in a cylindrical shape by connecting the upper edge 31 and the step portion 41.

Further, a funnel-shaped portion 42 whose diameter is reduced downward from the step portion 41 is formed on the bottom surface portion of the extraction container 40, and a communication pipe 50 extending downward is formed at the tip thereof. This communication pipe
In the lower end 50, the opening 51 on the lower end side is arranged at a predetermined height from the bottom surface inside the pressure vessel 30, and the opening 52 on the upper end side is covered with a filter 60 as a filtering means.

As shown in FIG. 2, the filter 60 is formed by wrapping one surface of a punch metal 61 with a filter cloth 62 and fitting the filter cloth into a filter accommodating portion 43 formed inside the tip of the funnel-shaped portion 42 while being wrapped around the periphery. Therefore, the solid content can be filtered from the water flowing from the opening 52 into the communication pipe 50.

Further, the upper end of the extraction container 40 is fixed to a predetermined height near the upper end opening of the main body case 10 by the bayonet structure 70.

As shown in FIG. 3, three thin plate-shaped protrusions 71 are formed around the upper end opening of the extraction container 40, and each protrusion 71 is formed on the inner periphery of the upper end opening of the main body case 10. It is locked in the groove 72. Here, the extraction container 40 is rotated and the projection 71 is taken out from the notch 73 of the engaging groove 72, whereby the extraction container 40 can be removed from the main body case 10.

With the extraction container 40 fixed by such a bayonet structure 70, the pressure container 30 is sandwiched with the bottom surface side of the main body case 10 with a predetermined pressing force, and the connection with the extraction container 40 is maintained. Here, an elastic seal material 32 such as a rubber O-ring is interposed between the upper edge 31 of the pressure container 30 and the step portion 41 of the extraction container 40, and the inside of the pressure container 30 is sufficiently It is configured so that it can be maintained in a tightly sealed state.

In this embodiment having such a configuration, soybean milk and okara are separated and extracted by the following procedure.

First, as shown in FIG. 4 (A), water 2 is stored in the pressure vessel 30.
Then, as shown in FIG. 4 (B), the extraction container 40 is connected to the pressure container 30 to seal the pressure container 30. At this time, the water 2 in the pressure vessel 30 is set so that the opening 51 at the lower end of the communication pipe 50 is sufficiently immersed. It is efficient to use the water 2 that has been heated to some extent in advance. Further, the crushed soybeans 3 are put in the extraction container 40 from above the filter 60.

Next, the heating means 20 is energized to heat the water 2 in the pressure vessel 30 to extract the soybean active ingredient.

As shown in FIG. 4 (C), the water 2 becomes hot water 2A by heating, and steam 2B is generated in the gas phase portion of the pressure vessel 20. As the steam 2B increases, The pressure rises. Hot water 2A as the pressure inside the pressure vessel 30 rises
Is pressurized, and the hot water 2A is pressure-fed from the pressure container 30 into the extraction container 40 through the communication pipe 50 and the filter 60. The hot water 2A flowing into the extraction container 40 is mixed with ground soybeans 3
At the same time as 3A, this ground soybean 3 is heated with water and the active ingredient is eluted in 2A of hot water.

With the progress of heating, the hot water 2A in the pressure vessel 30 decreases,
As shown in FIG. 4 (D), the water surface of the hot water 2A is lowered to open the opening 51.
When it reaches the lower side, the water vapor 2B in the vapor phase part is
Blows inside. Therefore, the pumping of hot water 2A from the communication pipe 50 is stopped, and instead the hot water vapor 2B is supplied from the communication pipe 50 to the extraction container 40. This water vapor 2B is connected to the communication pipe 50.
It flows into the extraction container 40 through the filter 60 from the opening 52 at the upper end, and rises as bubbles 2C toward the surface of the go 3A.
Therefore, Kure 3A is agitated by bubbles 2C and further heated, and the ground soybeans 3 in Kure 3A are efficiently extracted with the active ingredient. By such extraction, hot water 2A changes to soy milk 2D.

After a sufficient time for heating has passed, the heating means 20 is stopped and the soymilk 2D and the okara 3B are separated.

As shown in Fig. 4 (E), when heating is stopped, the pressure vessel
30 is gradually cooled, the water vapor 2B in the vapor phase portion is condensed, and the pressure inside the pressure vessel 30 is reduced. Due to this pressure reduction, the soy milk 2D in the extraction container 40 is sucked, collected through the filter 60 and the communication pipe 50 into the pressure container 30. However, the solid content such as fiber of the crushed soybean 3 is filtered by the filter 60 and remains in the extraction container 40 as Okara 3B.

After this, soy milk 2D is continuously sucked into the lower communication tube 50,
The back pressure from above and the gravity from the atmosphere infiltrate and move downward in Okara 3B one by one, and the funnel-shaped portion 42 connects the communication pipe 50.
Are efficiently collected. As a result, soy milk 2D and okara 3B are completely separated.

According to this embodiment, the following effects can be obtained.

That is, after a preparatory step such as filling with water 2 and ground soybeans 3 and the like, by appropriately operating heating and stopping heating,
Soymilk 2D extraction and okara 3B separation can be sequentially performed in the same apparatus, and the procedure for manufacturing can be extremely simplified.

In addition, since the pressurization and depressurization of the steam 2B was used for the pumping of the hot water 2A for extraction and the recovery of the soymilk 2D, or the filtration of the okara 3B, power such as a pump other than the heating means 20 is not necessary at all, Power consumption can be reduced and operation and adjustment can be simplified.

Furthermore, by unifying the extraction and separation in one device, the device can be downsized and the operation can be simplified. In particular, it is not necessary to use a mechanical device such as squeezing or centrifugation after extracting the active ingredient as in the conventional method,
In addition to preventing a series of device configurations from becoming complicated, there is no need to perform an operation in each procedure or link each procedure, and thus the operation can be significantly simplified.

Further, in the above-mentioned embodiment, the pressure container is provided in the main body case 10.
Since 30, the extraction container 40, the heating means 20, and the like are integrated, handling during preparation before use or during storage can be extremely easily performed.

For this reason, soy milk 2D and Okara 3B in ordinary households etc.
It is ideal for small-quantity production of soy milk, and is ideal as a simple household maker that can easily obtain fresh soy milk 2D and Okara 3B.

The present invention is not limited to the above embodiment,
The following modifications are also included.

That is, the crushed soybeans 3 put in the extraction container 40 may be dried crushed ones, wet crushed soybeans, or the like, or may be gourd-like ones preliminarily mixed with water 2.

Further, the amount of water 2 to be put in the pressure vessel 30 may be such that at least the opening 51 at the lower end of the communication pipe 50 is immersed so that hot water is pumped by heating. The hot water 2A that is pumped by the time it shifts to the supply of steam 2B has the opening 51
Corresponds to the portion above the height of. Therefore, the water surface position from the opening 51 is preferably adjusted in consideration of the amount required for extraction in the extraction container 40.

Further, the height of the opening 51 at the lower end of the communication pipe 50 from the bottom surface of the pressure vessel 30 is increased by the water level in the pressure vessel 30 due to the decrease of water vapor.
It regulates the amount of hot water 2A remaining in the pressure vessel 30 when 2B comes to be delivered. Therefore, if this opening 51 is placed high, the steam 2B
Stirring and heating in the extraction container 40 can be obtained by
Since soy milk 2D to be collected is thinned if a large amount of water remains in 30, the height of the lower end opening 51 of the communication pipe 50 is preferably set appropriately as necessary.

Further, heating to the inside of the pressure vessel 30 and its stopping are performed by heating means.
Not only the manual operation of the power supply device that supplies power to 40, but also the use of a power supply device having a timer or the like, the heating can be automatically stopped after a predetermined time has elapsed after the start of heating, and the operation can be further simplified. Here, the temperature inside the extraction container 40 or the pressure container 30 are
If it is used together with a sensor that detects the water level inside, the operation can be simplified and the temperature conditions can be set more precisely, so that high-quality soymilk 2D and okara 3B can be obtained.

On the other hand, in the heating means 20, the electric heater 22 is connected to the pressure vessel 30.
It may be directly wound around the outer peripheral surface of the, or may be directly contacted with the water 2 as the inner side. In this case, the holding cylinder 21 can be omitted as appropriate, but it is desirable to appropriately provide a reflecting surface 23, a heat insulating layer or the like in order to recover energy leaking to the outside.

Further, the pressure container 30 is not limited to one connected to the extraction container 40, and may be provided separately from the extraction container 40. The arrangement at that time is the extraction container 40 and the pressure container.
The arrangement is not limited to the arrangement of 30 at the top and the bottom, and they may be arranged in parallel at the same height. However, with the vertical arrangement as in the above-mentioned embodiment, it is possible to utilize gravity as well as decompression when collecting soymilk 2D.

Furthermore, the pressure vessel 30 is not limited to being sealed at the bottom surface portion of the extraction vessel 40 by using an appropriate lid, but even in this case, a sufficient sealing is obtained at the joint portion between the pressure vessel 30 and the lid. It is desirable to install a sealant 32 equivalent. When the pressure container 30 is not hermetically sealed by connecting to the extraction container 40, the tubular main body case 10 and the fixing bayonet structure 70 may be omitted as appropriate.

Further, the extraction container 40 is not limited to the one in which the communication pipe 50 is integrally formed at the lower end of the funnel-shaped portion 42 of the bottom surface, and the opening 52 of the communication pipe 50 may be formed directly on the flat bottom surface, or tube
The 50 may be a detachable separate body. In particular, when arranging the extraction container 40 and the pressure container 30 in parallel, it suffices to connect both containers by a siphon-shaped communication pipe, and the pressure container side of the communication pipe at that time has a slight distance toward the bottom surface of the container. You can use the ones that have been placed in advance.

Further, the filter 60 may be any one that can prevent the passage of solids in order to separate the okara 3B, and in addition to the configuration of the above-described embodiment, a filter paper, a foamed resin, a metal net, or the like is used or appropriately. It may be used in combination. Such a filter 60 may be provided not only in the filter accommodating portion 43 but also along the inner side surface of the funnel-shaped portion 42, in short, the communication pipe 50.
It may be arranged so as to cover the opening 52 at the upper end of the.

〔The invention's effect〕

As described above, according to the method and apparatus for extracting and separating soybean milk and okara of the present invention, it is possible to efficiently produce small amounts of soybean milk and okara, and to reduce the size and power of the apparatus. Since it is possible and easy to operate, if it is applied as a simple production device for easily producing soy milk or okara at home or the like, excellent performance can be exhibited.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view showing an essential part of the embodiment, FIG. 3 is a top view showing the embodiment, and FIGS. E) is a schematic diagram showing a procedure for producing soy milk and okara according to the above-mentioned embodiment. 1 …… Soy milk okara simple manufacturing device, 2 …… Water, 2A …… Hot water,
2B ... steam, 2C ... air bubbles, 2D ... soy milk, 3 ... ground soybeans, 3A ... Kure, 3B ... Okara, 20 ... heating means, 30 ...
Pressure vessel, 40 ... Extraction vessel, 50, 51, 52 ... Communication pipe and openings at both ends, 60 ... Filter which is a filtering means.

Claims (2)

[Claims] 1. An extraction container containing crushed soybeans and a pressure container sealed with water are connected by a communication pipe, and the opening of the communication pipe on the pressure container side is immersed in water. The inside of the pressure vessel is heated by the generated steam, and the hot water and steam in the pressure vessel are sequentially sent under pressure through the communication pipe into the extraction vessel. The hot water and steam heat the ground soybeans to activate the active ingredient. The heating of the pressure vessel is stopped, the pressure vessel is decompressed by the condensation of water vapor, and the soy milk in the extraction vessel is sucked through the communication tube to be collected in the pressure vessel, and A method for extracting and separating soybean milk and okara, characterized in that the okara is left in the extraction container and separated by a filtering means provided at the opening on the side of the extraction container. 2. An extraction container containing crushed soybeans, a sealable pressure container containing water, a heating means for heating water in the pressure container, the extraction container and the pressure container communicating with each other and opening at both ends. The soybean milk and okara extractor / separator, which comprises a communication pipe arranged near the bottom surface of each container and a filtering means arranged at the opening of the communication pipe on the extraction container side.