JPH07115906A - Extraction of drink and apparatus therefor - Google Patents

Abstract

PURPOSE:To provide a drink extraction method capable of adjusting the average concentration of the total extracted liquid to a target concentration, decreasing the risk of the production of defective product and enabling the back-up of the defective product to another extraction tank and the processing to an acceptable product. CONSTITUTION:An extraction step to add water to an extraction raw material filled in an extraction tank and extract the extracted liquid containing an extract of an extracting raw material is finished in an extraction tank among plural extraction tanks 31. The extracted liquid is discharged, the weight and concentration of the extracted liquid are determined and transmitted to a controller 60, the concentration of the extracted liquid in the extraction tank 31 is compared with a preset target concentration value, the temperature and flow rate of water to be supplied to the extracting tank of the next extraction step and an extraction period are calculated and the calculation results are fed-back to the next extraction tank 31 to bring the concentration closer to the target concentration. Similar control is continued thereafter to adjust the average concentration of the total extracted liquid to the target concentration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage extraction method and apparatus for extracting an extraction liquid containing an extract of an extraction raw material by adding feed water to the extraction raw material placed in an extraction tank.

[0002]

2. Description of the Related Art A conventional beverage extraction apparatus puts an extraction raw material in one large tank, adds hot water to it, holds it for a certain period of time, extracts an extraction liquid containing the extract of the extraction raw material, and then extracts it. The liquid (beverage liquid) is discharged, and then the raw material slag is poured out together with the washing water. This conventional example (refer to Japanese Patent Publication No. 59-6684 if necessary) will be described with reference to FIG.

Reference numeral 6 designates an extraction tank, a top plate of the extraction tank 6, a supply duct 1 having a coffee ground bean opening / closing valve 1'on its upper surface, a filter cleaning spray nozzle 2, a tank cleaning spray ball 3 and an extraction spray. A nozzle 4 is provided, a filter 5 is provided at the lower opening of the extraction tank 6, a spray nozzle 2 for cleaning the filter, a spray ball 3 for cleaning the tank, and a spray nozzle 4 for the extraction.
A hot water supply pipe 7 is connected to and via open / close valves 8 and 8 '.

A coffee bean meal discharge pipe 9 is connected to the lower opening of the extraction tank 6, and a coffee bean meal guide pipe 11 is connected to the tip of the coffee bean meal discharge pipe 9 through an opening / closing valve 10 to make a coffee bean meal discharge pipe. A coffee extract liquid take-out pipe 12 and a sample take-out pipe 13 are connected to an intermediate portion of 9, and a pair of open / close valves 14 and 14 'are provided at predetermined intervals in the middle of the coffee extract liquid take-out pipe 12 to provide an open / close valve. 14, 1
The steam supply pipe 15 is connected to the coffee extract liquid extraction pipe 12 between 4 '.
The operation valve 16 is provided in the middle of the steam supply pipe 15, the opening / closing valves 17 and 17 'are provided on both sides of the operation valve 16, and the top plate of the extraction tank 6 and the operation valve 16 are compressed via the opening / closing valve 19. The air supply pipe 18 is connected.

A shaft 21 that moves up and down by a manual handle 20 is provided below the filter 5, and the shaft 21 is lifted to lift the filter 5 from the bottom of the extraction tank 6 and By opening the lower surface opening and lowering the shaft 21, the filter 5 is fitted into the lower surface opening of the extraction tank 6 so that the ground coffee beans are prevented from flowing out and the coffee is filtered. ing.

In the above beverage brewing apparatus, the opening / closing valve 1'is first opened to store a predetermined amount of ground coffee beans in the brewing tank 6, and then the opening / closing valves 17, 17 ', 14'.
Open and open the operation valve 16 to introduce steam into the extraction tank 6 through the coffee extract extraction pipe 12, the coffee bean lees discharge pipe 9 and the filter 5, and steam the ground coffee beans stored in the extraction tank 6. Preheat expansion, and then open / close valve 8'to open extraction spray nozzle 4
The hot water is sprayed evenly in the form of mist onto the upper surface of the ground coffee beans that have been preheated and allowed to flow naturally.

The coffee obtained at this time is extracted through the filter 5, and the extracted liquid is taken out through the coffee extracted liquid extraction pipe 12 through the coffee bean lees discharge pipe 9 and the opening / closing valves 14 and 14 'which are opened in advance. . When the coffee brewing operation is completed, the manual handle 20 is turned to lift the filter 5 from the bottom of the brewing tank 6, and then the brewing tank 6 is filled with water in an amount equal to the weight of the coffee beans and the open / close valve 19 is opened. Open, introduce compressed air into the extraction tank 6 and pressurize it, open the open / close valve 10 and discard it all at once through the coffee bean lees discharge pipe 9 and the guide pipe 11 and then open the open / close valve 8 to wash the filter. The filter 5, the tank 6, and the like are washed by the spray nozzle 2 and the tank cleaning spray ball 3, and a series of coffee extraction is completed.

[0008]

The conventional beverage extraction device shown in FIG. 4 is large in size, and when a large amount of extraction is performed at one time with this beverage extraction device, extraction conditions for the extraction raw material (for example, supply water temperature, The target extraction rate (extract concentration) could not be obtained due to fluctuations in the extraction time and the amount of water supplied. In that case, it was difficult to correct the concentration of the extract solution, and it took time to correct it, causing the flavor to fly. In such a case, the correction becomes impossible.

The present invention is proposed in view of the above problems, and the object thereof is to adjust the average concentration of the total amount of the extracted liquid to the target concentration. Another object of the present invention is to provide a beverage extraction method and apparatus that can reduce the risk of manufacturing defective products and can back up defective products with another extraction tank to easily make them good products.

[0010]

In order to achieve the above-mentioned object, the beverage extraction method of the present invention adds feed water to the extraction raw material placed in the extraction tank to extract the extraction liquid containing the extract of the extraction raw material. Finish the extraction process with one of the multiple extraction tanks, discharge the extraction liquid, measure the weight and concentration of the extraction liquid, send it to the controller, and set the extraction liquid concentration value in the extraction tank in advance. Compared with the target concentration value,
Calculate the feed water temperature, flow rate, and extraction time of the extraction tank in the next extraction process, feed back the calculation result to the next extraction tank, bring it closer to the target concentration, and perform similar control thereafter to discharge. The feature is that the average concentration of all the extracted liquids is adjusted to the target concentration.

In the beverage extraction method, the concentration value of the extraction liquid in the extraction tank is compared with a preset target concentration value, and the weight and the concentration of the extraction liquid are used to determine the temperature and flow rate of the water supplied to the extraction tank in the next extraction step. When calculating the extraction time, the supply water temperature, the flow rate, and the extraction time may be set within a preset range. In the beverage extraction method, two conditions out of three conditions of the supply water temperature, the flow rate, and the extraction time are first fixed, and the remaining one condition is changed within a preset range. One of the conditions may be changed.

Further, the beverage extraction apparatus of the present invention is provided with a plurality of extraction tanks provided on the downstream side of the branch pipes of the common supply water, washing water, and the supply pipes for the extraction raw material, and the extraction tanks. Having a common extract discharge means for collecting and sending the extract, after the extraction process is completed in one extract tank,
In the beverage extraction device that sequentially shifts to the extraction process of the next extraction tank, the flow rate control means and temperature control means of the supply water provided in the supply water pipe for each extraction tank, and the extraction liquid outlet for each extraction tank Extraction liquid weight detection means and liquid concentration detection means provided in the section, and compares the extraction liquid concentration value of an arbitrary extraction tank in the extraction step with a preset target concentration value, and the extraction tank of the next extraction step The control device adjusts the supply water temperature, the flow rate, and the extraction time, sends the calculation result to the extraction tank in the next extraction step, and adjusts the average concentration of the discharged total amount of the extraction liquid to the target concentration. .

In the beverage brewing apparatus, a feed water flow rate controller and a flow rate adjusting valve provided as flow rate control means in each brewing tank supply pipe, and a heat exchanger provided in the supply water pipe as temperature control means of the feed water. And a temperature controller attached to the supply water pipe at the outlet of the heat exchanger, a flow rate adjustment valve provided in the hot water pipe of the heat exchanger controlled by the temperature controller, and an extraction liquid outlet for each extraction tank. In the extraction step, there is a buffer tank having a load cell provided as the extraction liquid weight detection means, a concentration meter such as a liquid densitometer, an absorption concentration meter, and an electrical resistance concentration meter provided in the buffer tank as the liquid concentration detection means. Compare the concentration value of the extraction liquid in any extraction tank with a preset target concentration value, and based on the weight and concentration of the extraction liquid, supply water temperature and flow rate of the extraction tank in the next extraction process, extraction time And a controller for adjusting the average concentration of the total amount of the extracted liquid discharged by issuing a command to the flow controller of the supply water and the temperature controller attached to the supply water pipe at the outlet of the heat exchanger. You may make it available.

[0014]

The beverage extraction method and apparatus of the present invention are configured as described above, and are provided with a plurality of extraction steps for adding the feed water to the extraction raw material placed in the extraction tank to extract the extraction liquid containing the extract of the extraction raw material. After ending with one of the extraction tanks, discharge the extraction liquid, measure the weight and concentration of the extraction liquid, send it to the control device, extract liquid concentration value of the extraction tank and the preset target concentration The value is compared, the supply water temperature and flow rate of the extraction tank in the next extraction process, the extraction time are calculated, and the calculation result is fed back to the next extraction tank to bring it closer to the target concentration, and thereafter the same. Control
Adjust the average concentration of all discharged extract to the target concentration.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of a beverage extracting device used for carrying out the beverage extracting method of the present invention will be described with reference to FIGS.
1 is a block diagram showing the beverage extraction device, FIG. 2 is a side view showing an extraction tank and peripheral devices of the beverage extraction device, FIG.
FIG. 4 is an explanatory diagram showing a state of the extraction tank of FIG. 2 during cleaning.

In FIGS. 1 and 2, 50 is a common pure water supply pipe, 54 is a wash water pipe, 56 is a supply pipe for extraction raw materials and the like, and 53 is hot water which is a heat source for a heat exchanger for heating pure water. It is piping. The n extraction tank devices 30 mainly including the extraction tank 31 are connected downstream of the pipes branched from the respective pipes. In the n number of extraction tank devices 30, the extracted beverages are collected in a common extraction liquid receiving trough 51, and sent out to a storage tank (not shown) via a delivery pipe 52 and a pump 45. Each extraction tank device 30 includes a control device 60.
After the extraction of one extraction tank device 30 is completed, the process is sequentially shifted to the extraction process of the next extraction tank device 30.

As a means for controlling the flow rate of pure water, a solenoid valve 46 for stopping the supply of pure water, a flow rate controller 36 and a flow rate adjusting valve 40 are provided in a branch pipe of a pipe 50 for supplying pure water to each extraction tank 31. ing. A heat exchanger 38 is provided in a branch pipe of the pure water supply pipe 50 as a pure water temperature control means.
The temperature controller 37 is connected to the pure water supply pipe 50 at the outlet of the heat exchanger 38.
The temperature controller 37 controls the flow rate adjusting valve 39 attached to the hot water pipe 53 to adjust the flow rate of the hot water and change the temperature of the pure water.
The hot water pipe 53 also has a solenoid valve 4 for each extraction tank device 30.
7 is provided, and the supply of hot water is stopped when it is not needed.

A metering feeder 57 is provided for each extraction tank device 30 in the supply pipe 56 for the extraction raw material grains and the like, and a fixed amount of the extraction raw material grains or the like is extracted at a predetermined timing according to a command from the control device 60. Raw material grains and the like are supplied to the extraction tank 31. An electromagnetic valve 48 is also provided for each extraction tank device 30 in the cleaning water pipe 54, and a nozzle 55 is attached to the tip of the cleaning water pipe 54 in the extraction tank 31. After the extraction process is completed and the extraction liquid is discharged, the bottom 59 of the extraction tank 31 is driven together with the outlet pipe, the solenoid valve 41, and the raw material lees discharge gutter 70 according to a command from the control device 60, as shown in FIG. It is pushed upward by a device (not shown), the electromagnetic valve 48 is opened, washing water is blown out from the nozzle 55, the raw meal is washed out, and the filter 58 attached to the bottom 59 is washed. Reference numeral 49 is a solenoid valve that opens only during cleaning in order to flush the cleaning water accumulated in the bottom 59 and the pipe.

In the extraction tank 31, after warmed pure water is added to the extraction raw material grains put in the extraction tank 31 to extract the extraction liquid containing the extract of the extraction raw material grains, a command from the control device 60 is given. As a result, the solenoid valve 41 is opened, and the extract flows into the buffer tank 32, which is the extract weight detecting means below. After the inflow of the extract is completed, the load cell 33
Measures the total weight including the buffer tank 32, and the controller 60 subtracts the weights of the buffer tank 32 and accessories to calculate and record the weight of the extract. The buffer tank 32 is mechanically disconnected from the extraction liquid discharge pipe of the extraction tank 31 and from the extraction liquid receiving trough 51 at the lower part, so that the connection with these pipes does not affect the weight measurement. Not at all.

In the buffer tank 32, a densitometer 34 (a liquid densitometer, an absorption densitometer, an electric resistance densitometer, or the like) for detecting the characteristics of the liquid by a sensor 35 in the buffer tank 32 as a liquid concentration detecting means. Is provided. The control device 60 controls the solenoid valve 46, depending on the timing of charging the pure water, the cleaning water, and the extraction raw material to be supplied to each extraction tank 31,
47, 48 and the metering and supplying device 57 are sequentially issued, and the concentration value of the extraction liquid discharged from an arbitrary extraction tank 31 in the extraction step is preset in response to the signal from the measurement controller. The temperature and flow rate of the water supplied to the extraction tank 31 in the next extraction step and the extraction time are calculated based on the weight and concentration of the extract, and the calculated results are calculated as the flow rate controller 36 and the temperature controller 37. Then, the timing for opening the solenoid valve 41 is instructed to adjust the average concentration of all the discharged extract to the target concentration.

Next, the operation of the beverage extraction device shown in FIGS. 1 to 3 will be specifically described. Common pure water, hot water, wash water,
N extraction tank devices 30 are provided downstream of the branch pipe of the supply pipe for the extraction raw material particles and the like, and one extraction tank device 30 is provided.
After the extraction work of (for example, the extraction tank device 30) is completed, the extraction work is sequentially performed so that the extraction process of the next extraction tank device 30 (for example, the extraction tank device 30) starts.
The beverages extracted in the extraction tank device 30 are collected in the common extraction liquid receiving trough 51 and sent to the storage tank.

At the beginning of the extraction process, the controller 60
In response to a command from the metering device 57, the metering and supplying device 57 operates, and a specified amount of the extraction raw material is accumulated in the extraction tank 31. The pure water supply to the extraction tank 31 is started by opening the electromagnetic valve 46 in response to a command from the control device 60 (at this time, the bottom of the extraction tank 31 is lowered and the lower portion of the extraction tank 31 is kept airtight. However, the solenoid valve 41 of the discharge pipe is in a closed state).

The target concentration value of the pure water flow rate to the extraction tank 31 is transmitted from the control device 60 to the flow rate controller 36, and the pure water flow rate is controlled by the flow rate controller 36 and the flow rate adjusting valve 40. Further, the control device 60 instructs the temperature controller 37 of the pure water at the outlet of the heat exchanger 38 to operate the flow rate adjusting valve 39 provided in the hot water pipe 53 of the heat exchanger 38,
By controlling the flow rate of hot water, the temperature of pure water is controlled to approach the specified temperature. The pure water supply time is calculated from the capacity of the extraction tank 31 and the pure water flow rate, and when the extraction tank 31 is full, the solenoid valve 46 is supplied.
Is closed.

Here, in order to extract the extract from the extraction raw material grain or the extraction raw material leaf, after being held for a certain period of time, the solenoid valve 41 is opened by a command from the control device 60, and the extraction liquid is stored in the lower buffer tank 32. Run down. In the buffer tank 32, the weight is measured as described later, and after the liquid concentration is detected, the electromagnetic valve 42 is opened, the extraction liquid flows down into the extraction liquid receiving trough 51, and is discharged to the storage tank by the pump 45. It

On the other hand, the extraction tank 3 which has sent out the extraction liquid
In 1, the electromagnetic valve 48 of the cleaning water pipe 54 is opened, the tank bottom 59 is lifted, the cleaning water is blown out from the nozzle 55, the extracted rame of the raw material flows out into the discharge gutter 70, and at the same time, the inside of the extraction tank 31 and the filter 58, The piping etc. are cleaned. After the cleaning is completed, the solenoid valve 48 is closed, the bottom 59 is lowered, and the lower part of the tank is sealed to prepare for the next extraction.

Although the extraction process of the extraction tank device 30 has been described above, the same applies to the extraction tank device 30, the extraction tank device 30, ... The extraction tank device n30. Next, the control method of the control device 60, that is, the concentration of the extraction liquid discharged from the first extraction tank device 30 is compared with a preset target concentration value, and the result is fed back to the control of the next extraction tank device 30. Then, calculate the supply water temperature, flow rate, and extraction time, indicate the extraction conditions to the temperature controller and the flow controller of the supply water pipe, determine the extraction time, and perform similar feedback control one after another. A control method for adjusting the average concentration of all the extraction liquid discharged from the plurality of extraction tank devices 30 to the target concentration will be described.

The load cell 33 supporting the buffer tank 32 measures the weight of the extraction liquid discharged from the extraction tank 31 and transmits the measured value to the control device 60. The densitometer 34 provided in the buffer tank 32 detects the liquid concentration and transmits the detected value to the control device 60. The control device 60 compares and calculates the weight and concentration of the extract in the buffer tank 32 with a preset target concentration value, and corrects the variation of the concentration of the extract with respect to the target concentration value. The temperature and flow rate of pure water to 31 and the extraction time are calculated, and the extraction conditions are instructed to the flow controller 36 and the temperature controller 37 of the pure water piping of the extraction tank 31, and at the same time the extraction holding time of the extraction tank 31 is determined. .

The extraction liquid discharged from the extraction tank 31 under the above conditions is accumulated in the buffer tank 32, and similarly, the weight of the discharged extraction liquid is measured and the measured value is transmitted to the control device 60, which is provided in the buffer tank. The densitometer 34
The liquid concentration is detected and the detected value is transmitted to the control device 60. In the control device 60, the weight of the extraction liquid in the buffer tank 32 and the extraction liquid in the buffer tank 32, and the average of the extraction liquid concentration are calculated from the concentration, and this value is compared with the target concentration value, and the total extraction liquid concentration of the tank and the tank is calculated. And the target concentration value are calculated, and the pure water temperature and flow rate to the next extraction tank 31 and the extraction time are calculated so as to correct this difference, and the extraction conditions are set to the pure water piping of the extraction tank 31. At the same time as instructing the flow rate controller 36 and the temperature controller 375, the extraction holding time of the extraction tank 31 is determined.

Similarly, the extraction condition of the next extraction tank is determined by feeding back the results of the average concentration of the extraction liquid in each extraction tank device so that the concentration of the total extraction liquid up to the extraction tank n31 will be the target concentration. In this way, the average extract concentration is adjusted so as to be as close to the target concentration as possible. The relationship between the extract concentration and the extraction conditions should be verified in advance by a test.

Further, as a method for adjusting the concentration of the extraction liquid so as to be close to the target concentration, the three conditions of the feed water temperature of the extraction tank, the flow rate and the extraction time in the next extraction step are simultaneously changed,
A method of correcting and adjusting while taking a value as close as possible to the condition of the initial extraction tank device 30 is adopted. Furthermore, the control device 60 is provided with a function for setting the upper and lower limits of the three conditions of the supply water temperature and flow rate of the extraction tank and the extraction time, and which condition is given priority in that range depending on the type of beverage, and other By fixing the two conditions and changing the priority condition, if it is still not enough, by changing the next condition,
It is also possible to adjust the extract concentration and the target concentration so that they are close to each other.

[0031]

EFFECT OF THE INVENTION The beverage extraction method and apparatus of the present invention is configured as described above, and extraction is performed by adding the feed water to the extraction raw material granules contained in the extraction tank to extract the extraction liquid containing the extract of the extraction raw material granules. The process is completed in one of the plurality of extraction tanks, the extraction liquid is discharged, the weight and concentration of the extraction liquid are measured, sent to the control device, and the extraction liquid concentration value of the extraction tank is preset. Compared with the target concentration value, the feed water temperature and flow rate of the extraction tank of the next extraction process, the extraction time is calculated, and the calculation result is fed back to the next extraction tank to approach the target concentration, Since the same control is performed thereafter, the average concentration of all the discharged extract can be easily adjusted to the target concentration.

Even if the extraction concentration in a particular extraction tank is out of the target value, the effect of the total extraction liquid in a plurality of extraction tanks on the extraction concentration is a value divided by the number of extraction tanks. The risk of manufacturing can be reduced, and defective products can be backed up by another extraction tank, so that they can be easily made into good products.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a beverage extraction device used for implementing the beverage extraction method of the present invention.

FIG. 2 is a side view showing an extraction tank and peripheral devices of the beverage extraction device.

FIG. 3 is an explanatory diagram showing a state of the extraction tank of FIG. 2 during cleaning.

FIG. 4 is a vertical sectional side view showing a conventional beverage extraction device.

[Explanation of symbols]

 30 Extraction tank device 31 Extraction tank 32 Buffer tank 33 Extraction liquid weight detection means (load cell) 34 Liquid concentration detection means (concentration meter) 36, 40 Flow rate control means (flow rate controller) 37 Temperature control means (temperature controller) 38 Temperature Control means (heat exchanger) 39 Temperature control means (flow rate controller) 50 Pure water supply pipe 51 Extraction liquid receiving trough 60 Control device

Claims (5)

[Claims] 1. The extraction step of adding the feed water to the extraction raw material placed in the extraction tank to extract the extraction liquid containing the extract of the extraction raw material is completed in one of the plurality of extraction tanks, and the extraction liquid is discharged. Then, measure the weight and concentration of the extract, send it to the control unit, compare the extract tank concentration value with the preset target concentration value, and supply water to the extract tank for the next extraction step. The temperature, the flow rate, and the extraction time are calculated, and the calculation result is fed back to the next extraction tank to bring it closer to the target concentration, and then the same control is performed.
A beverage extraction method, characterized in that the average concentration of all discharged extract is adjusted to a target concentration. 2. The extraction liquid concentration value of the extraction tank is compared with a preset target concentration value, and the weight and concentration of the extraction liquid are used to determine the feed water temperature and flow rate of the extraction tank in the next extraction step, and the extraction time. The beverage extraction method according to claim 1, wherein the temperature of the supplied water, the flow rate, and the extraction time are calculated within a preset range when the calculation is performed. 3. Two of the three conditions of supply water temperature, flow rate, and extraction time are fixed first, and the remaining one condition is changed within a preset range. 3. The beverage extraction method according to claim 2, wherein one of the conditions is changed. 4. A plurality of extraction tanks provided on the downstream side of a branch pipe of a common supply pipe for supply water, washing water, extraction raw materials, and the like, and a common for collecting and delivering the extraction liquid extracted in each extraction tank. In the beverage extraction device that has the extract liquid discharging means, and the extraction process is completed in one extraction tank, and then sequentially proceeds to the extraction process in the next extraction tank, provided in the supply water pipe for each of the extraction tanks. Flow rate control means and temperature control means of the supply water, extraction liquid weight detection means and liquid concentration detection means provided at the extraction liquid outlet of each extraction tank, and extraction liquid of any extraction tank in the extraction process The concentration value and the preset target concentration value are compared, the temperature of the supply water of the extraction tank in the next extraction process, the flow rate, and the extraction time are calculated, and the calculation result is sent to the extraction tank in the next extraction process. , The average of all discharged extract A beverage extraction device comprising: a control device for adjusting the concentration to a target concentration. 5. The same heat as a flow rate controller and a flow rate control valve of supply water provided as flow rate control means in each of the extraction tank supply pipes, and a heat exchanger provided as supply water temperature control means in the supply water pipes. The temperature controller attached to the feed water pipe at the outlet of the exchanger, the flow rate adjusting valve provided in the hot water pipe of the heat exchanger controlled by the temperature controller, and the weight of the extract at the extract outlet of each extraction tank A buffer tank having a load cell provided as detection means, a concentration meter such as a liquid densitometer, an absorption concentration meter, and an electrical resistance concentration meter provided as liquid concentration detection means in the buffer tank, and any extraction in the extraction step The concentration value of the extraction liquid in the tank is compared with a preset target concentration value, and the temperature and flow rate of the supply water and the extraction time of the extraction tank in the next extraction process are calculated from the weight and concentration of the extraction liquid to calculate the flow rate of the supply water. It is characterized by including a volume controller and a temperature controller attached to the feed water pipe at the outlet of the heat exchanger, and a controller for issuing an instruction to adjust the average concentration of the total amount of the extracted liquid to a target concentration. The beverage extraction device according to claim 4.