JP5368836B2 - Circulating heating type extraction device and extraction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a apparatus for circulation heating extraction which is capable of minimizing boiling of processed liquid in a heating device or a circulation passage even when extraction temperature is high so as to restrict burning of extraction components attaching to inner walls of the heating device and the circulation device. <P>SOLUTION: The apparatus is provided with an extractor body 1 to pour processed liquid W to extraction material C to generate extraction liquid, and a heating device 2 to heat the extraction liquid. The extractor body 1 and the heating device 2 are connected to each other to form a closed circulation passage 6 for heating extraction liquid to be circulated to the extractor body 1. In the circulation passage 6, a pressurization device 8 to pressure-feed pressurization fluid into the circulation passage 6 to pressurize the inside of the circulation passage is provided. A control means 9 is provided to actuate the pressurization device 8 to pressurize the inside of the circulation passage 6 to pressure higher than saturated steam pressure of the processing liquid W in the circulation passage 6 during circulation heating operation for heating extraction liquid discharged from the extractor body 1 by the heating device 2 to be circulated to the extractor body 1 for extraction. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention includes an extractor body that generates an extract containing an extraction component extracted from the extract raw material by pouring a processing liquid into the extract raw material, and a heating device that heats the extract discharged from the extractor main body. The present invention relates to an extraction device and an extraction method.

In such an extraction apparatus and extraction method, the temperature of the processing liquid when the processing liquid is poured into the extraction raw material to generate the extraction liquid, that is, the extraction temperature is an important factor.
Therefore, conventionally, there is known a configuration in which the temperature of the treatment liquid is adjusted in advance to a predetermined extraction temperature (60 to 150 ° C.), and the temperature-adjusted treatment liquid is introduced into the extractor body and poured into the extraction raw material. (For example, refer to Patent Document 1).

Japanese Patent No. 3619448

However, in the extraction device and the extraction method described in Patent Document 1, the temperature of the treatment liquid is adjusted in advance to a temperature slightly higher than the extraction temperature, and then the treatment liquid is introduced into the extractor body. As a result of the extraction, the temperature of the processing liquid at the time of extraction in the extractor body is not necessarily a predetermined extraction temperature.
In recent years, it has been noticed that it is possible to extract an active ingredient (for example, polyphenol), which has been impossible in the past, by increasing the extraction temperature.

However, in the extraction apparatus and the extraction method described in Patent Document 1, since it is necessary to raise the temperature of the treatment liquid to an extraction temperature of about 200 ° C. at a time, there is a problem with the temperature rise of the treatment liquid. At the time of extraction in the extractor body, it is difficult to reliably maintain the temperature of the treatment liquid at the extraction temperature.
In order to solve such problems, the extractor body and the heating device are connected by a circulation path, and the extraction liquid discharged from the extractor body is heated by the heating device and circulated again to the extractor body. It is conceivable to employ a circulating heating type extraction apparatus and extraction method that gradually raise the temperature of the liquid.

However, in the circulation heating type extraction apparatus and extraction method, since a high-temperature extract containing the extraction component extracted from the extraction raw material flows through the circulation path, boiling occurs in the circulation path, particularly in the heating apparatus, There is a possibility that the eluted extracted component excessively heats up due to the boiling of the extract, and adheres to the inner wall of the heating device or the circulation path to cause scorching.
If the extracted component burns and adheres to the heating device or the inner wall of the circulation path, it is naturally necessary to remove it. In particular, when performing extraction from different extraction raw materials using the same extraction device, it is necessary to reliably remove the burned extraction component, and the removal of the burned extraction component becomes a big problem.

  The present invention pays attention to such conventional problems, and its purpose is to suppress the boiling of the processing liquid in the heating device and the circulation path as much as possible even if the extraction temperature is high, and extract components Is to provide a circulating heating type extraction device and an extraction method capable of suppressing scorching due to adhesion to the heating device and the inner wall of the circulation path.

In order to achieve the above object, the characteristic configuration of the circulating heating type extraction apparatus according to the present invention is an extractor main body that generates a liquid extract containing an extraction component extracted from the extraction raw material by pouring a treatment liquid into the extraction raw material. A heating device that heats the extract discharged from the extractor body, the extractor body and the heating device are connected to each other, and the extract discharged from the extractor body is heated by the heating device. A hermetic circulation path that circulates in the extractor body is provided, and a pressurization device that pressurizes the pressurizing fluid into the circulation path to pressurize the path is provided, and the extractor body In order to perform a circulating heating operation in which the extraction liquid discharged from the heating apparatus is heated by the heating device and circulated in the extractor body, the pressurization device is operated and the saturated vapor pressure of the processing liquid in the circulation path is determined. High pressure Wherein a control means for pressurizing the circulation path, said control means, said at the start of the circulating heating operation, to pressurize the inside circulation route at a higher pressure than the saturation vapor pressure at the highest extraction temperature of the treatment liquid It is where it is configured .

According to this characteristic configuration, an extractor body that generates an extract containing an extraction component extracted from the extract raw material by pouring a processing liquid into the extract raw material, and a heating device that heats the extract discharged from the extractor main body The extractor body and the heating device are connected to each other, and a so-called circulation is formed in which a closed circulation path is formed in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body. Since it is a heating type extraction device, by performing a circulating heating operation in which the extraction liquid is circulated, the temperature of the treatment liquid is increased to a high temperature of, for example, 200 ° C. or more without difficulty. The temperature can be easily maintained.
In order to perform the circulating heating operation, the control means pressurizes the pressurizing fluid into the circulation path and operates a pressurizing device capable of pressurizing the path, so that the saturated vapor of the processing liquid in the circulation path It is configured to pressurize the circulation path to a pressure higher than the pressure, so there is little possibility that the processing liquid will boil in the circulation path including the heating device, and the extracted component will burn on the inner wall of the heating device and the circulation path. It is suppressed.
In particular, at the start of the circulating heating operation in which the control means pours the processing liquid into the extraction raw material to generate the extraction liquid, the pressurization device is activated to reach a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the processing liquid. Since the interior is pre-pressurized, it does not require a large number of sensors and complicated control to gradually pressurize the inside of the circulation path in response to the temperature rise of the extract, and it is relatively simple With a simple device, it is possible to suppress scorching of the extracted component.

In order to achieve the above object, the characteristic configuration of the circulating heating type extraction apparatus according to the present invention is an extractor main body that generates a liquid extract containing an extraction component extracted from the extraction raw material by pouring a treatment liquid into the extraction raw material. , Equipped with a heating device for heating the extract discharged from the extractor body,
The extractor body and the heating device are connected to each other, and a hermetic circulation path is formed in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body. A pressurizing device capable of pressurizing the inside of the circulation path by pressurizing the pressurizing fluid;
In order to perform a circulation heating operation in which the extract liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body, the pressurizing device is operated and the treatment liquid in the circulation path is Control means for pressurizing the inside of the circulation path to a pressure higher than the saturated vapor pressure;
A temperature detecting means for detecting the temperature of the extract in the heating device;
The control means increases the pressure in the circulation path to a pressure higher than the saturated vapor pressure of the processing liquid under the detected temperature in response to the temperature rise of the detected temperature of the extract by the temperature detecting means. It is in the place where is configured.

According to this characteristic configuration, an extractor body that generates an extract containing an extraction component extracted from the extract raw material by pouring a processing liquid into the extract raw material, and a heating device that heats the extract discharged from the extractor main body The extractor body and the heating device are connected to each other, and a so-called circulation is formed in which a closed circulation path is formed in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body. Since it is a heating type extraction device, by performing a circulating heating operation in which the extraction liquid is circulated, the temperature of the treatment liquid is increased to a high temperature of, for example, 200 ° C. or more without difficulty. The temperature can be easily maintained.
In order to perform the circulating heating operation, the control means pressurizes the pressurizing fluid into the circulation path and operates a pressurizing device capable of pressurizing the path, so that the saturated vapor of the processing liquid in the circulation path It is configured to pressurize the circulation path to a pressure higher than the pressure, so there is little possibility that the processing liquid will boil in the circulation path including the heating device, and the extracted component will burn on the inner wall of the heating device and the circulation path. It is suppressed.
In particular, a temperature detecting means for detecting the temperature of the extract in the heating device is provided, and the control means controls the pressurizing device in response to a temperature rise of the detected temperature of the extract by the temperature detecting means, and the circulation path Is increased to a pressure higher than the saturated vapor pressure of the processing liquid at the detected temperature, so pressurization in the circulation path by the pressurizing device corresponds to a rise in the temperature of the extraction liquid. This can be done gradually, and the efficiency of the extraction work can be improved. In addition, since the circulation path is hermetically sealed, the pressure in the path increases with heating by the heating device. Therefore, the pressurizing device needs to pressurize only the amount that is insufficient with respect to the saturated vapor pressure. It is possible to suppress energy consumption for the purpose.

In order to achieve the above object, the characteristic configuration of the circulating heating type extraction method according to the present invention includes an extractor main body that generates an extract containing an extraction component that is extracted from the extract raw material by pouring a treatment liquid into the extract raw material. , Equipped with a heating device for heating the extract discharged from the extractor body,
Circulation in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated through the extractor body through a closed circulation path provided between the extractor body and the heating device. To perform heating operation,
With the pressurizing fluid injected into the circulation path at the start of the circulation heating operation, the circulation path is pressurized to a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the treatment liquid in the circulation path. The extraction liquid discharged from the extractor body is circulated while heating to perform extraction.

According to this characteristic configuration, an extractor body that generates an extract containing an extraction component extracted from the extract raw material by pouring a processing liquid into the extract raw material, and a heating device that heats the extract discharged from the extractor main body The extract liquid discharged from the extractor body is heated by the heating device and circulated through the extractor body through a closed circulation path provided between the extractor body and the heating device. Since it is a so-called circulation heating type extraction method to be performed, by heating the extract liquid while circulating, as a result, the temperature of the treatment liquid is raised to a high temperature of, for example, 200 ° C. or more without difficulty. The temperature can be easily maintained.
Then, a state in which the inside of the circulation path is pressurized to a pressure higher than the saturated vapor pressure of the processing liquid in the circulation path by a pressurizing device capable of pressurizing the pressurizing fluid into the circulation path and pressurizing the inside of the flow path. Therefore, the extraction liquid discharged from the extractor body is circulated while heating, so that extraction is not likely to boil in the circulation path including the heating device, and the extraction is performed on the inner wall of the heating apparatus and the circulation path. The burning of the component is suppressed.
In particular, at the start of the circulating heating operation in which the processing liquid is poured into the extraction raw material to generate the extraction liquid, the pressurization device is activated to preliminarily add the inside of the circulation path to a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the processing liquid. Because it is configured to keep pressure, it does not require a large number of sensors and complicated control for gradually pressurizing the inside of the circulation path in response to the temperature rise of the extract, and it is a relatively simple device, Burning of the extracted component can be suppressed.

In order to achieve the above object, the characteristic configuration of the circulating heating type extraction method according to the present invention includes an extractor main body that generates an extract containing an extraction component that is extracted from the extract raw material by pouring a treatment liquid into the extract raw material. A heating device for heating the extract discharged from the extractor body, and a temperature detecting means for detecting the temperature of the extract in the heating device, provided between the extractor body and the heating device. In order to perform a circulating heating operation in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body through the sealed circulation path provided.
A pressurizing fluid is press-fitted into the circulation path, and the pressure in the circulation path is changed to a saturated vapor of the treatment liquid at the detected temperature in response to a temperature rise in the temperature detected by the temperature detection means. In the state where the pressure is higher than the pressure , the extraction liquid discharged from the extractor body is circulated while heating and extraction is performed.

According to this characteristic configuration, an extractor body that generates an extract containing an extraction component extracted from the extract raw material by pouring a processing liquid into the extract raw material, and a heating device that heats the extract discharged from the extractor main body And a temperature detection means for detecting the temperature of the extraction liquid in the heating device, and the extraction discharged from the extractor body through a closed circulation path provided between the extractor body and the heating device This is a so-called circulation heating type extraction method in which the liquid is heated by a heating device and circulated through the extractor body, so that the temperature of the processing liquid can be increased by heating while circulating the extraction liquid. For example, the temperature can be raised to a high temperature of 200 ° C. or higher and the temperature can be easily maintained.
Then, a state in which the inside of the circulation path is pressurized to a pressure higher than the saturated vapor pressure of the processing liquid in the circulation path by a pressurizing device capable of pressurizing the pressurizing fluid into the circulation path and pressurizing the inside of the flow path. Therefore, the extraction liquid discharged from the extractor body is circulated while heating, so that extraction is not likely to boil in the circulation path including the heating device, and the extraction is performed on the inner wall of the heating apparatus and the circulation path. The burning of the component is suppressed.
In particular, it comprises a temperature detection means for detecting the temperature of the extract in the heating device, controls the pressurizer in response to the temperature rise of the detected temperature of the extract by the temperature detection means, the pressure in the circulation path, The extraction liquid discharged from the extractor body is circulated while being heated while being pressurized to a pressure higher than the saturated vapor pressure of the treatment liquid at the detected temperature. The pressurization in the circulation path by the pressure device can be gradually performed in response to the temperature rise of the extract, and the efficiency of the extraction work can be improved. In addition, since the circulation path is hermetically sealed, the pressure in the path increases with heating by the heating device. Therefore, the pressurizing device needs to pressurize only the amount that is insufficient with respect to the saturated vapor pressure. It is possible to suppress energy consumption for the purpose.

Schematic block diagram of the circulating heating type extraction device according to the first embodiment Chart showing the relationship between water temperature and saturated vapor pressure Schematic configuration diagram of a circulation heating type extraction device according to the second embodiment Chart showing the relationship between ethanol temperature and saturated vapor pressure

An embodiment of a circulating heating type extraction apparatus and extraction method according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the circulating heating type extraction device according to the first embodiment includes a high-temperature and high-pressure extractor body 1 that can withstand high temperatures and high pressures, a heating device 2, and the like.
The extractor body 1 generates an extract containing extracted components extracted from the coffee beans C by pouring hot water W as a processing solution into the ground coffee beans C, which is an example of an extraction raw material. A lid 3 that can be freely opened and closed is provided in the section, and a basket 5 made of a solid-liquid separating mesh or the like for storing the ground coffee beans C is detachably disposed in the extraction chamber 4 inside thereof. Yes.

A first pipe L1 for supplying hot water W is connected to the extraction chamber 4 of the extractor main body 1, and a first on-off valve V1 is provided in the first pipe L1, and a tip portion of the first pipe L1. Although not shown, a rotary shower nozzle for pouring hot water W evenly onto the coffee beans C and a rotary leveling blade for leveling the coffee beans C are provided.
The bottom of the extractor body 1 is connected to a second pipe L2 for discharging hot water W and extract from the extraction chamber 4, and a second on-off valve V2 is provided in the second pipe L2. Two pipes L2 are connected to the heating device 2 in communication.
The heating device 2 is for heating the hot water W or the extract liquid discharged from the extractor body 1 through the second pipe L2, for example, a type that exchanges heat with high-temperature steam or gas, or a heater It is possible to use various types of heating devices, such as those that are directly heated by, for example.

And the 2nd piping L2 is connected to the inlet side of the heating apparatus 2, and the 1st piping L1 is connected to the exit side of the heating apparatus 2 in communication. That is, the extractor body 1 and the heating device 2 are connected to each other by the first pipe L1 and the second pipe L2, and the extract liquid discharged from the extractor body 1 is heated by the heating device 2 to extract the extractor body 1. A hermetic circulation path 6 that circulates in the air is formed.
In the second pipe L2 that forms the circulation path 6, a circulation pump 7 for circulating the extract is disposed between the second valve V2 and the heating device 2, and the first pipe L1 includes A third pipe L3 having a control valve V3 is connected in communication between the heating device 2 and the first valve V1, and an inert gas such as nitrogen or a pressurizing gas such as air (heating gas) is connected to the third pipe L3. An example of a pressure fluid) is press-fitted (supplied at a high pressure), and a pressurizing device 8 such as a compressor capable of pressurizing the extraction chamber 4 and the circulation path 6 of the extractor body 1 is connected. In the present embodiment, an example in which the third pipe L3 for injecting the pressurizing gas is connected to the first pipe L1 will be described. The third pipe is connected to any part of the circulation path 6. For example, it may be connected to the extraction chamber 4 of the extractor body 1 via the lid 3.

Moreover, the control part 9 as a control means which performs the circulating heating operation which heats the extract liquid discharged | emitted from the extractor main body 1 with the heating apparatus 2, and circulates to the extractor main body 1 is provided. The device 8 and the control valve V3 are also configured to be controlled by the control unit 9. An extraction chamber pressure sensor 10 that detects the pressure in the extraction chamber 4 is provided in the extractor body 1, and a temperature detection that detects the temperature of the extract in the heating device 2 is provided in the first pipe L 1 in the vicinity of the outlet of the heating device 2. Heating device temperature sensors 11 are provided as means, and signals from the extraction chamber pressure sensor 10 and the heating device temperature sensor 11 are input to the control unit 9.
A fourth pipe L4 having a fourth on-off valve V4 is connected to the first pipe L1 between the connection point of the third pipe L3 and the first on-off valve V1, and the second pipe L2 is connected to the second pipe L2. A fifth pipe L5 having a five open / close valve V5 is connected in communication between the second open / close valve V2 and the circulation pump 7, so that the pressure in the extraction chamber 4 does not exceed the set pressure in the extractor body 1. A sixth pipe L6 having a relief valve V6 for communication is connected in communication.

Next, the operation of the circulating heating type extraction apparatus according to the first embodiment will be described, and the circulating heating type extraction method will be mentioned.
For example, if the extraction raw material is coffee beans and the treatment liquid is hot water, the lid 3 of the extractor body 1 is opened, the ground coffee beans C are charged in the basket 5, and the extraction chamber 4 is filled. Hot water W is charged, the lid 3 is closed, the fourth on-off valve V4 and the fifth on-off valve V5 are closed, the first on-off valve V1 and the second on-off valve V2 are opened, and the extractor body 1 and the heating device 2 are connected. The circulation path 6 including it is sealed.
Thereafter, the control unit 9 controls, and in order to perform the circulating heating operation, the control valve V3 is opened and the pressurizing device 8 is operated, and the hot water W is extracted with the pressurizing gas such as an inert gas. The inside of the circulation path 6 is pressurized to a pressure higher than the saturated vapor pressure at the temperature.

For example, in the case of water, since the temperature and the saturated vapor pressure (gauge pressure) have the relationship shown in FIG. 2, if the maximum extraction temperature by the hot water W is set to 200 ° C., the saturation at 200 ° C. After pressurizing the inside of the circulation path 6 to a pressure higher than the vapor pressure (about 1.5 MPa) and confirming that the predetermined pressure was obtained by a signal from the extraction chamber pressure sensor 10, the circulation pump 7 was operated, Hot water W in the extraction chamber 4 is circulated along the circulation path 6.
Thereby, the hot water W in the extraction chamber 4 is heated by the heating device 2 and poured into the coffee beans C, and an extract containing the extracted components extracted from the coffee beans C is generated. Heated again by the heating device 2 and poured into the coffee beans C.
When the maximum extraction temperature is set to 200 ° C., the temperature detected by the heating device temperature sensor 11 is a temperature obtained by adding the amount of heat released to the outside when flowing through the first pipe L1. Also gets higher. Therefore, in order to reliably prevent the boiling of the extract in the circulation path 6, it is desirable to pressurize the circulation path 6 to about 2.0 MPa, for example.

By this extraction liquid circulation, the extraction temperature rises with time, finally rises to the maximum extraction temperature of 200 ° C., and is circulated and extracted over a predetermined time while being maintained at the maximum extraction temperature of 200 ° C. In the meantime, the heat radiation to the outside is replenished and heated by the heating device 2. Then, the extracted liquid after the completion of extraction closes the first on-off valve V1, opens the fourth on-off valve V4, is discharged from the fourth pipe L4, and is discharged after being cooled by a cooling device (not shown).
As described above, according to the circulation heating type extraction method of the present invention, the saturated vapor pressure at the maximum extraction temperature of the hot water W prior to the start of the circulation heating operation in which the hot water W is poured into the coffee beans C to generate the extract. Since the inside of the circulation path 6 is preliminarily pressurized to a higher pressure, boiling of the hot water W in the circulation path 6 is prevented, and scorching of the extraction component contained in the extract is avoided.
In this embodiment, in order to pressurize the inside of the circulation path 6 to a pressure higher than the saturated vapor pressure at the start of the circulation heating operation, the inside of the path 6 is preliminarily pressurized before the operation. The inside of the path 6 is pressurized to a pressure higher than the saturated vapor pressure immediately after the start of the circulating heating operation or immediately after the start of the boiling within the range where the boiling of the water can be prevented. It doesn't matter.

Next, the circulating heating type extraction device according to the second embodiment will be described. In order to avoid redundant description, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. A configuration different from that of the first embodiment will be described.
In the circulating heating type extraction apparatus according to the second embodiment, as shown in FIG. 3, an extraction chamber temperature sensor 12 for detecting the temperature of the extraction liquid flowing down in the extraction chamber 4 is provided in the extractor body 1, Further, a circulation pump pressure sensor 13 for detecting the pressure at the outlet of the circulation pump 7 is provided in the second pipe L2, and a pressure device pressure sensor 14 for detecting the pressure at the outlet of the pressurizer 8 is provided in the third pipe L3. Is provided.
And the signal from these temperature sensor 12 for extraction chambers and both pressure sensors 13 and 14 is also input into the control part 9, The temperature and saturated steam which are shown in FIG. The relationship with pressure is stored as data.

The operation of the circulation heating type extraction device according to the second embodiment is substantially the same as that of the first embodiment, but at the start of the circulation heating operation, a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the hot water W. In response to the temperature rise of the extract over time, the pressure in the circulation path 6 is gradually increased to a pressure exceeding the saturated vapor pressure at that time, Finally, it differs from the first embodiment in that the pressure is increased to a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the hot water W.
That is, after the ground coffee beans C are charged in the basket 5 and hot water W is charged in the extraction chamber 4 to seal the circulation path 6, the control unit 9 opens the control valve V3 and pressurizes. 8 is operated, and before and after the pressurization device 8 is operated, the circulation pump 7 is also operated, and the hot water W in the extraction chamber 4 is circulated along the circulation path 6.

By this circulation, the hot water W and the extract are heated by the heating device 2 and gradually rise in temperature. The temperature of the hot water W and the extract is determined by the temperature sensor 11 for the heating device as a temperature detecting means, Is detected in real time by the extraction chamber temperature sensor 12 and input to the controller 9.
The controller 9 stores the relationship between the water temperature and the saturated vapor pressure shown in FIG. 2 as data, and pressurizes the data corresponding to the temperature rise of the hot water W and the extract over time based on the data. The apparatus 8 is controlled, and the pressure in the circulation path 6 is increased over time to a pressure higher than the saturated vapor pressure of the hot and cold water W at the detection temperature at that time. The inside of the circulation path 6 is pressurized to a pressure higher than the saturated vapor pressure (about 1.5 MPa) corresponding to the maximum extraction temperature, and the circulation extraction is performed for a predetermined time in this state.

[Another embodiment]
In the first and second embodiments, the case where the extraction raw material is coffee beans and the treatment liquid is hot water has been described as an example. However, the extraction raw materials include cocoa and various teas in addition to coffee beans. In that case, hot water is mainly used as the treatment liquid.
In addition, various raw materials such as livestock meat raw materials, fishery raw materials, food / agricultural / fishery waste can be used as extraction raw materials, and ethanol (alcohol-based organic solvent) can be used as a treatment liquid depending on the extraction raw materials. ), Acetone (ketone-based organic solvent), hexane, and the like are used, and the relationship between the temperature and the saturated vapor pressure varies depending on the treatment liquid used.

For example, in the case of ethanol, the relationship between temperature and saturated vapor pressure (gauge pressure) is as shown in FIG.
Therefore, in the case of the second embodiment, the relationship between the temperature and the saturated vapor pressure shown in FIG. 4 is stored as data in the control unit 9, and further, water or ethanol is included in the control unit 9. In addition, the relationship between the temperature of acetone or hexane and the saturated vapor pressure can be stored as data, and can be selected and used according to the processing liquid to be used.

  Furthermore, the present inventors have found that by setting the extraction temperature to about 195 ° C., it is possible to extract rutin and quercetin effective as an antiallergic component from cocoa, which is a raw material for extraction, using water as a treatment liquid. It was. Because the extraction temperature is high, quercetin is understood to be obtained by hydrolysis of rutin.

  In the above-described embodiment, the inside of the path 6 is pressurized by press-fitting a pressurizing gas as a pressurizing fluid into the hermetic circulation path 6, but separately, a processing liquid as the pressurizing fluid is used. You may comprise so that the inside of the said path | route 6 may be pressurized by press-fitting the liquid for pressurization, such as a certain hot water W, in the sealed circulation path | route 6. FIG.

DESCRIPTION OF SYMBOLS 1 Extractor body 2 Heating device 6 Circulation path 8 Pressurizing device 9 Control means 11 Temperature detection means C Extraction raw material W Processing liquid

Claims (4)

An extractor body for pouring a treatment liquid into the extraction raw material to produce an extract containing an extraction component extracted from the extraction raw material, and a heating device for heating the extract discharged from the extractor main body,
The extractor body and the heating device are connected to each other, and a hermetic circulation path is formed in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body. A pressurizing device capable of pressurizing the inside of the circulation path by pressurizing the pressurizing fluid;
In order to perform a circulation heating operation in which the extract liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body, the pressurizing device is operated and the treatment liquid in the circulation path is Control means for pressurizing the inside of the circulation path to a pressure higher than the saturated vapor pressure ;
The circulation heating type extraction device configured to pressurize the inside of the circulation path to a pressure higher than a saturated vapor pressure at the maximum extraction temperature of the processing liquid at the start of the circulation heating operation . An extractor body for pouring a treatment liquid into the extraction raw material to produce an extract containing an extraction component extracted from the extraction raw material, and a heating device for heating the extract discharged from the extractor main body,
The extractor body and the heating device are connected to each other, and a hermetic circulation path is formed in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body. A pressurizing device capable of pressurizing the inside of the circulation path by pressurizing the pressurizing fluid;
In order to perform a circulation heating operation in which the extract liquid discharged from the extractor body is heated by the heating device and circulated to the extractor body, the pressurizing device is operated and the treatment liquid in the circulation path is Control means for pressurizing the inside of the circulation path to a pressure higher than the saturated vapor pressure;
A temperature detecting means for detecting the temperature of the extract in the heating device;
The control means increases the pressure in the circulation path to a pressure higher than the saturated vapor pressure of the processing liquid under the detected temperature in response to the temperature rise of the detected temperature of the extract by the temperature detecting means. A circulating heating type extraction device. An extractor body for pouring a treatment liquid into the extraction raw material to produce an extract containing an extraction component extracted from the extraction raw material, and a heating device for heating the extract discharged from the extractor main body,
Circulation in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated through the extractor body through a closed circulation path provided between the extractor body and the heating device. To perform heating operation,
With the pressurizing fluid injected into the circulation path at the start of the circulation heating operation, the circulation path is pressurized to a pressure higher than the saturated vapor pressure at the maximum extraction temperature of the treatment liquid in the circulation path. A circulation heating type extraction method in which the extraction liquid discharged from the extractor body is circulated while heating. An extractor body for pouring a treatment liquid into the extraction raw material to generate an extract containing an extraction component extracted from the extraction raw material, a heating device for heating the extract discharged from the extractor main body, and the heating device Temperature detecting means for detecting the temperature of the extract of
Circulation in which the extraction liquid discharged from the extractor body is heated by the heating device and circulated through the extractor body through a closed circulation path provided between the extractor body and the heating device. To perform heating operation,
A pressurizing fluid is press-fitted into the circulation path, and the pressure in the circulation path is changed to a saturated vapor of the treatment liquid at the detected temperature in response to a temperature rise in the temperature detected by the temperature detection means. in a state where pressurized to a pressure higher than the pressure, circulating heating extraction method for extracting by circulating while heating the extract discharged from the extractor body.

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