JPH11283118A - Beverage extraction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a beverage of a taste corresponding to the sort of the beverage by controlling a gas feeding means in accordance with the sort of the beverage and adjusting the quantity of gas to be supplied to an extraction room. SOLUTION: At the time of receiving a coffee beverage vending request, a main control part 9 outputs a vending signal corresponding to the sort of the requested coffee beverage to a beverage preparation control part 8. When the vending signal is outputted from the main control part 9, the control part 8 allows a beverage preparing part 2 to control beverage extraction. At the time of an agitation process, the control part 8 controls the rotational frequency of a DC motor for an air pump 2B in accordance with the sort of the beverage to adjust the quantity of air to be supplied to an extraction room 20d and change the strength of agitation to a strong, medium or weak level. Namely the quantity of air to be supplied to the room 20d is adjusted in the agitation process by controlling voltage to be impressed to the DC motor of the air pump 2B by the control part 8. Consequently accurate air discharge can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage extracting apparatus applied to a cup-type vending machine for extracting coffee, black tea, oolong tea, green tea and the like from beverage raw materials and selling them in cups. The present invention relates to a beverage extraction device capable of producing a beverage having a flavor according to the type.

[0002]

2. Description of the Related Art As a conventional beverage extracting device, for example,
There is one disclosed in Japanese Utility Model Laid-Open Publication No. 61-118526.

FIG. 11 shows this beverage brewing apparatus. The beverage extraction device 100 is supported so as to be able to move up and down, and is disposed below the cylinder 101 and a cylinder 101 that discharges a mixed liquid of powdered raw material (coffee powder) and hot water supplied from above. A filter 102 for filtering the discharged mixture, a beverage container 104 having a rubber packing 103 for receiving the beverage extracted by the filtration of the filter 102, and a beverage container 104,
Beverage supply tube 105 for supplying beverage to the cup side, pressing plate 106a and cam 106 for opening and closing beverage supply tube 105
b) and a control unit (not shown) for controlling each unit of the beverage extraction device 100.

[0004] The cylinder 101 is provided with a supply port 1 provided above.
Mixing room 1 for mixing powder raw material and hot water supplied from 01a
01b, and an extraction chamber 101d in which the mixed liquid is discharged from a discharge port 101c provided below and a beverage extraction step is performed, and the mixing chamber 101b is connected to the extraction chamber 101d and a communication port 101e.
Is in communication with The communication port 101e is opened and closed by a valve 107.
An air pipe 109 for introducing pressurized air from the air pump 108 is connected to 01d.

[0005] The beverage brewing apparatus 100 configured as described above.
, The control unit drives the extraction drive motor (not shown) based on the input of the sales signal, thereby lowering the cylinder 101 from the standby position P and lowering the lower end of the beverage receiver 1.
04 is closely attached to the rubber packing 103. Thereafter, the powder raw material and hot water are supplied from the supply port 101a. The control unit is
The air pump 108 is driven to supply pressurized air to the air pipe 10.
9 to the extraction chamber 101d. In this state, the valve 107 is slightly opened, and the pressurized air is supplied to the extraction chamber 101.
d to the mixing chamber 101b through the communication port 101e, and agitates the mixture of the powdery raw material and the hot water supplied into the mixing chamber 101b. When the mixed liquid is sufficiently stirred, the driving of the air pump 108 is stopped, and the mixed liquid flows into the extraction chamber 101d through the communication port 101e.

FIG. 12 shows an extraction process in the beverage extraction device 100. The control unit drives the extraction drive motor to raise the valve 107 to close the communication port 101e. Then, the air pump 108 is driven to supply pressurized air to the extraction chamber 101d via the air pipe 109. Extraction room 10
The mixed liquid stored in 1d is filtered by pressurized air.
02, the cam 106b rotates by a predetermined angle based on the drive of a supply motor (not shown), whereby the pressing of the beverage supply tube 105 by the pressing plate 106a is released, and the beverage supply tube 105 is opened.

When the coffee extract filtered by the filter 102 is supplied to the cup side through the beverage supply pipe 105, the control unit moves the cylinder 101 to the slag disposal position P ', and places the filter 102 in the beverage receiver 104. And the residue remaining on the filter 102 is discarded. When the beverage brewing operation is completed in this way, the control unit drives the brewing drive motor to return the cylinder 101 to the standby position P.

According to the vending machine 100, coffee is extracted by stirring the mixture of powdered beverage and hot water with pressurized air, so that efficient extraction can be performed.

[0009]

However, according to the conventional beverage extracting device 100, the amount of pressurized air sent into the mixing chamber 101b is kept constant when the mixed liquid of the powdered raw material and the hot water is stirred. Even when the types of coffee beverages are different, the degree of elution of coffee components such as taste, astringency, bitterness, and sourness becomes constant, and there is a problem that flavors corresponding to the types of coffee beverages cannot be obtained.

[0010] Accordingly, an object of the present invention is to provide a beverage extraction device capable of producing a beverage having a flavor according to the type of beverage.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is provided at a lower part of the upper chamber through a communication port which is opened and closed by an upper chamber to which a beverage material and hot water are supplied. A beverage extraction apparatus, comprising: a mixture of the beverage raw material and the hot water supplied from the upper chamber to the extraction chamber through the communication port with the gas by stirring the mixture with gas. , A valve driving means for moving the valve to open and close the communication port, a gas supply means for supplying the gas to the extraction chamber, and the mixed liquid from the upper chamber to the extraction chamber via the communication port. Is supplied, the valve drive means is controlled to open the communication port, and the gas supply means is controlled in accordance with the type of the beverage to control the amount of the gas supplied to the extraction chamber. Beverage extraction characterized by comprising means To provide a device. In order to achieve the above object, the present invention provides a beverage extraction device that extracts a beverage after stirring a beverage ingredient and hot water while supplying a predetermined amount of gas, and generates a beverage signal according to the type of the beverage. A signal generation unit, an extraction chamber for agitating the beverage raw material and the hot water, and extracting the beverage, and when performing the agitation, the predetermined amount of the gas supplied to the extraction chamber according to the beverage signal. And a control means for controlling the amount of the beverage.

[0012]

FIG. 1 shows a cup-type vending machine to which a beverage brewing apparatus according to a first embodiment of the present invention is applied. The vending machine 1 includes a beverage manufacturing unit 2 that extracts and manufactures a beverage from a mixture of a powdered raw material (eg, coffee powder) and hot water, a cup supply unit 5 that supplies a cup 4 to a tray 3, a beverage Sugar or cream is added to the coffee beverage produced by the production section 2 and the mixture is supplied to the cup 4 on the tray 3. The additional mixing section 6 supplies powdered raw material and hot water to the beverage production section 2. The vending machine 1 includes a raw material unit 7 that supplies sugar or cream, a beverage production control unit 8 that controls the beverage production unit 2, and a main control unit 9 that controls the entire vending machine 1.

The raw material section 7 includes a hot water tank 70 for storing hot water.
, A coffee raw material container 71 for supplying a coffee raw material from a supply port 71a, a sugar raw material container 72 for supplying sugar from a supply port 72a, and a cream raw material container 73 for supplying cream from a supply port 73a. Also, the raw material section 7
Is a tap water solenoid valve 74 for supplying tap water to the hot water tank 70.
And a heater 7 for heating the tap water supplied from the tap water solenoid valve 74 to the hot water tank 70 to make hot water for extraction at a predetermined temperature.
5, a temperature sensor 76 for detecting the temperature of the hot water in the hot water tank 70 heated by the heater 75, a float 77 for detecting the amount of hot water in the hot water tank 70, and the hot water in the hot water tank 70 to the beverage production unit 2. A hot water electromagnetic valve 79 supplied through a hot water pipe 78 is provided.

The additional mixing section 6 includes a chute 60 disposed immediately below the supply ports 72a and 73a of the sugar raw material container 72 and the cream raw material container 73, and a sugar raw material container 72 for the extracted beverage supplied from the beverage producing section 2. And a mixing ball 61 for mixing the sugar and the cream supplied from the supply ports 72a, 73a of the cream raw material container 73 via the shooter 60 and supplying the mixture to the cup 4 via the supply pipe 61a.

The beverage producing section 2 comprises a cylinder 20 for stirring and discharging a mixed liquid composed of a powdery raw material supplied through a powder chute 2A and hot water supplied through a hot water pipe 78, and a cylinder 20. Filter 21 for filtering the mixture discharged from the filter, and a beverage supply pipe 22C for receiving the beverage extracted by the filtration of the paper filter 21.
Receiver 22 to be supplied to the mixing ball 61 via the
And pressurized air is sent to the extraction chamber 20d via the upper air solenoid valve 50 provided on the air pipe 52, and the beverage receiver 22 is provided via the lower air solenoid valve 51 provided on the air pipe 52.
And an air pump 2B for sending pressurized air. The air pump 2 </ b> B is a diaphragm pump driven by a DC motor, and the number of revolutions is controlled by voltage control of the control unit 8.

FIG. 2 shows the details of the beverage producing section 2. The beverage production section 2 is supported by a guide rail (not shown) so as to be movable up and down, and a cylinder 20 for stirring a mixed liquid of powdered raw material and hot water supplied from above and discharging the mixed liquid downward, and disposed below the cylinder 20. A paper filter 21 for filtering the mixed liquid discharged from the cylinder 20, a beverage receiver 22 for receiving the beverage extracted by the filtration of the paper filter 21, and a disposal unit 40 for discarding scum and the like are provided.

The cylinder 20 is provided with a supply port 20 provided above.
Upper chamber 20b for receiving the powder raw material and hot water supplied from a
And an outlet 20 provided with a mixed liquid of powdered raw material and hot water below.
extraction chamber 20d in which the beverage extraction process is performed by discharging the beverage from c.
The upper chamber 20b and the extraction chamber 20d are formed so as to communicate with each other through a communication port 20e. The communication port 20e is connected to the valve 23
The extraction chamber 20d has an inlet 2 for introducing pressurized air from the air pump 2B.
0f.

The paper filter 21 includes a rotatable shaft 2.
1A is set in a roll shape, and is configured to be pulled out to the left in FIG. 2 by the drive of the disposal motor 40 of the disposal unit 4. The remaining amount of the paper filter 21 is detected by a filter detecting lever 21B whose base end is rotatably supported and whose middle or distal end is always in contact with the roll-shaped paper filter 21; The switching operation is performed by the rotation of the detection lever 21 </ b> B, and a detection signal indicating that the paper filter 21 has run out is output to a control unit described later, and the detection is performed by a filter remaining amount detection sensor 21 </ b> C such as a microswitch that provides an alarm output or the like.

The beverage receiver 22 is provided with an opening 22a at an upper portion, and a rubber packing 22A for preventing the mixture from leaking when the discharge port 20c of the cylinder 20 comes into contact with the periphery of the opening 22a. A roller 22B for guiding the travel of the paper filter 21 is provided, and a beverage supply pipe 22C for supplying the beverage to the cup side and a disposal pipe 22D for discarding the beverage and the like are provided below. In addition, the beverage supply pipe 22C
Is provided with a beverage supply solenoid valve 53.

Further, the beverage production unit 2 includes an extraction motor 24
And the output shafts 25a and 25b project from both sides, respectively.
A speed reducer 25 for reducing the number of revolutions of the extraction motor 24 to a predetermined number of revolutions;
a supporting plate 26 supported by the first output shaft 25a
Cam 27A and valve cam 27 fixed to
B and a cylinder drive plate 28A for driving the cylinder 20
, A valve driving plate 28B for driving the valve 23, a cylinder cam follower 29A mounted on the cylinder driving plate 28A, a valve cam follower 29B mounted on the valve driving plate 28B, and a locking member mounted on the cylinder driving plate 28A 28a and a locking member 28b attached to the valve driving plate 28B, both ends of which are respectively locked. The cylinder driving plate 28A and the valve driving plate 28B are drawn toward each other to move the cylinder cam follower 29A and the valve cam follower 29B to the cylinder cam 27A and the valve cam. Tension coil springs 30 that respectively abut against 27B
A plurality of connecting members 31A, 31B, 31C for connecting the cylinder 20 and the cylinder driving plate 28A;
The lever 32, which is rotatably connected by a pin 32a on the tip side, is attached to the valve driving plate 28B, and the pin 3
2b, a connecting member 33 rotatably connecting the lever 32 and a tension coil spring 34 whose both ends are respectively locked to a rear end side of the lever 32 and a locking member 28c attached to the valve driving plate 28B. ing. The beverage production unit 2 includes output shafts 25a and 25b, and a disposal unit 40.
The output shaft 41a makes one rotation, thereby completing a series of steps of the stirring step, the extraction step, and the slag disposal step.

On the other output shaft 25b side of the speed reducer 25,
A position detection mechanism for detecting a position corresponding to each step is provided. That is, the other output shaft 25b of the speed reducer 25
, One or more position detection plates 35 are attached, and around the position detection plate 35, one or more position detection sensors such as one or more photo sensors for detecting the rotational position of the position detection plate 35. 36 are arranged.

The air pump 2B is connected to an inlet 20f of the extraction chamber 20d and an air pipe 52 communicating with the beverage receiver 22. The air pipe 52 is connected to the inlet 20f of the extraction chamber 20d.
An upper air solenoid valve 50 and an air opening air solenoid valve 55 branched via a T-branch 54 are provided in front of f, and a lower air solenoid valve 51 is provided in front of the beverage receiver 22.

The disposal unit 40 includes a disposal motor 40A.
A reduction gear 41 for reducing the rotation speed of the disposal motor 40A to a predetermined rotation speed, and a notch 44a on the circumference, which is attached to the output shaft 41a of the reduction gear 41, and the paper filter 21 is fixed. Filter feed roller 4 for feeding the length
4, a guide roller 45 that presses the paper filter 21 against the pair of filter feed rollers 44 by a spring (not shown), and is rotatably supported by a support shaft 46a to press and close the waste pipe 22D between the fixing plate 47. And a projection 48 attached to the output shaft 41a of the speed reducer 41 and rotating the pressure plate 46.
and a pressing cam 48 having a.

The main control unit 9 outputs a sales signal corresponding to the type of the requested coffee beverage to the control unit 8 every time there is a coffee beverage sales request, and the hot water solenoid valve 70e.
To supply a fixed amount of hot water to the beverage production unit 2 via the hot water pipe 78, and control the coffee raw material container 71 to supply a constant amount of coffee raw material to the beverage production unit 2 to select the type of coffee beverage. The sugar raw material container 72 and the cream raw material container 73 are controlled accordingly to supply necessary sugar and cream to the additional mixing section 6. Further, the main control unit 9 controls the heater 75 and the tap water solenoid valve 74 based on the detection of the temperature sensor 76 and the float 77 so that the temperature and the amount of hot water in the hot water tank 70 are kept constant. .

When the sales signal is output from the main control unit 9, the control unit 8 controls the beverage production unit 2 to perform beverage extraction control, that is, a series of steps of a stirring step, an extraction step, and a slag disposal step. At the time of the stirring process, the number of rotations of the DC motor of the air pump 2B is controlled in accordance with the type of beverage, and the extraction chamber 20d is controlled.
The amount of air to be supplied to is adjusted, and the stirring intensity is changed to strong, medium, and weak. Air pump 2 with strong / medium / weak agitation strength
The discharge amount of B is, for example, 6 L / min and 5 L / min, respectively.
min, 2.5 L / min. For example, when selling hot black coffee, when selling coffee with low agitation, hot sugar and / or cream, when selling medium agitation, cold (with ice) black coffee If you sell coffee with medium agitation, cold sugar and / or cream, control the amount of air to achieve high agitation.

FIG. 3 shows the characteristics of the DC motor of the air pump 2B. The rotation speed of the DC motor of the air pump 2B is proportional to the voltage applied to the DC motor as shown in FIG. 3A, and the discharge amount of air from the air pump 2B is as shown in FIG. It is proportional to the rotation speed of the DC motor. Therefore,
By controlling the voltage applied to the DC motor of the air pump 2B by the control unit 8, the extraction chamber 20d
The amount of air to be supplied to can be adjusted. Note that the number of rotations of the DC motor may be detected, and feedback control for the DC motor may be performed based on the detection signal.
Thereby, an accurate air discharge amount can be obtained.

Next, the operation of the vending machine 1 will be described with reference to FIGS.

(1) Standby State FIG. 4 shows a standby state of the vending machine 1. In the standby state, the main portion of the automatic vending machine 1 is in a standby position P ₁ shown in FIG. In this standby state, the position detection sensor 3
6 detects the standby position P ₁ , and the pressing plate 46
Each of the solenoid valves 5 abuts against the pressing cam 48 by the elastic force of D.
0, 51, 53 and 55 are closed.

(2) Stirring Step When the sales signal is input from the main control section 9, the control section 8
Control the movement from the standby position P ₁ to the stirring position P _2. That is, the control unit 8 drives the disposal motor 40 to rotate in the normal direction (drive in which the pressing cam 48 rotates counterclockwise in FIG. 2).
The driving torque of the discarding motor 40 is transmitted to the output shaft 41a via the speed reducer 41, and the output shaft 41a rotates forward by about 60 °. As shown in FIG. By pressing the 46, the waste pipe 22D is closed between the pressing plate 46 and the fixing plate 47. Subsequently, the control unit 8 drives the extraction motor 24 to rotate in the normal direction (drive in which the output shaft 25a rotates in the direction of the arrow in FIG. 2). The driving torque of the extraction motor 24 is output to the output shaft 25 via the speed reducer 25.
a, 25b, the output shafts 25a, 25b rotate forward, and the cylinder cam 27A and the valve cam 27B rotate forward, whereby the cylinder drive plate 28A and the valve drive plate 28B descend. When the cylinder drive plate 28A descends, the cylinder 20 descends via the plurality of connecting members 31A, 31B, 31C, and the lower end of the extraction chamber 20d presses the paper filter 21 against the beverage receiver 22. On the other hand, when the valve driving plate 28B descends, the connecting member 33, the lever 32
The valve 32 is also lowered via. Position detection sensor 36
Detects the stirring position P _2, and outputs a stirring position detection signal to the control unit 8, the control unit 8 stops the driving of the extraction motor 24 based on the stirring position detection signal.

FIG. 5 shows the stirring step. This vending machine 1
Major portion of, reaches the stirring position P _2, when the state shown in FIG. 5, the control unit 8 performs agitation step. In this stirring step, the communication port 20e is open. The control unit 8 outputs a supply request signal of the powder raw material and the hot water to the main control unit 9.
The powder raw material and the hot water are supplied to the supply port 20a of the upper chamber 20b under the control of the main controller 9, and the extraction chamber 2 is supplied through the communication port 20e.
Flow into 0d. Next, the control unit 8 opens the lower air solenoid valve 51 in accordance with the supply of the powder raw material and the hot water, drives the air pump 2B, and controls the rotation speed of the motor of the air pump 2B according to the type of the coffee beverage. The air pump 2B
An amount of pressurized air corresponding to the type of the coffee beverage is sent to the beverage receiver 22 via the air pipe 52. The pressurized air passes through the paper filter 21 and flows into the extraction chamber 20d. When the pressurized air passes through the mixture in the extraction chamber 20d, the flow of the bubbles acts to agitate the mixture.

(3) Extraction Step FIG. 6 shows an extraction step of the vending machine 1. Control unit 8
Is previously when set stirring time elapses, close the lower air solenoid valve 51, the air pump 2B is stopped, extraction motor 2 to the position detection sensor 36 detects the extracted position P ₃
4 is driven forward. The valve 23 is further raised by the drive of the extraction motor 24, and closes the communication port 20e. The main part of the automatic vending machine 1 has reached the extraction position P _3, when the state shown in FIG. 6, the control unit 8 performs extraction step. That is, the control unit 8 opens the upper air electromagnetic valve 50 and the beverage supply electromagnetic valve 53, drives the air pump 2B, and supplies the pressurized air from the air pump 2B to the inlet 2 above the extraction chamber 20d.
Supply from 0f. The mixed liquid in the extraction chamber 20d is sent downward by pressurized air from the air pump 2B, and is filtered by the paper filter 21. Paper filter 21
Is filtered and supplied to the cup via the beverage receiver 22 and the beverage supply pipe 22C. Extraction room 20d
, The pressure in the extraction chamber 20d is increased, and the mixed liquid is pushed down to the paper filter 21 side, so that the mixed liquid is separated into coffee beverage and scum in a short time,
It can be filtered efficiently.

(4) Slag disposal process FIGS. 7A and 7B show a slag disposal process of the vending machine 1. FIG. When the preset extraction time has elapsed, the control unit 8
Closes the upper air solenoid valve 50 and the beverage supply solenoid valve 53, the air pump 2B is stopped, the position detecting sensor 36 is driven forward extraction motor 24 to detect the dregs discarding position P _4. The cylinder 20 and the valve 23 are raised to the highest position by driving the extraction motor 24. The main part of the automatic vending machine 1 has reached the dregs discarding position P _4, when the state shown in FIG. 7 (a), the control unit 8 performs the disposal process of the scum 7 remaining on the paper filter 21. That is, the control unit 8
The disposal motor 40 is driven forward. Disposal motor 4
0 is transmitted to the output shaft 41a via the reduction gear 41, the output shaft 41a rotates forward, and the filter feed roller 4
4 rotates and pulls out the paper filter 21. When the residue 7 on the paper filter 21 passes through the roller 22B,
As shown by the imaginary line in FIG. 7B, the slag 7 breaks off from the paper filter 21 and falls into a waste bucket (not shown).

(5) Return Operation to Standby State When the waste disposal step is completed, the control unit 8
And the disposal motor 40 is driven to rotate forward. The main part of the vending machine 1 returns to the standby state shown in FIG. afterwards,
Each time a sales signal is input to the control unit 8, the operations (1) to (5) are repeated.

According to the vending machine 1 having the above-described structure, the amount of air supplied to the extraction chamber 20d is adjusted in the stirring step according to the type of the coffee beverage, so that the vending machine 1 has a flavor corresponding to the type of the coffee beverage. A coffee beverage can be manufactured. That is, when selling black coffee, since the amount of air discharged into the extraction chamber 20d is suppressed and stirring is performed with a weak stirring force, it is possible to produce coffee with a high degree of transparency and less savory taste. In addition, when selling coffee containing sugar or cream, since the amount of air discharged into the extraction chamber 20d is increased and stirring is performed with a strong stirring force, it is necessary to produce coffee with strong astringency and bitterness. And can provide a coffee beverage according to the customer's preference.

Incidentally, the discharge amount of air from the air pump 2B may be kept constant, and the amount of air supplied to the extraction chamber 20d may be adjusted by controlling the air release air solenoid valve 55. Thus, an AC motor having a constant rotation speed can be used as the motor of the air pump 2B.

FIG. 8 shows a second embodiment of the present invention. In the second embodiment, a DC motor is used as the motor of the air pump 2B in the same manner as in the first embodiment, and the control unit 8 rotates the DC motor of the air pump 2B by a PWM method according to the type of coffee beverage. The number is controlled. The rotation speed of the DC motor is proportional to the ON / OFF time by PWM, as shown in FIG. 3A, and the amount of air discharged from the air pump 2B is, as shown in FIG. It is proportional to the rotation speed. Therefore, by controlling the DC motor of the air pump 2B by PWM by the control unit 8,
The amount of air supplied to the extraction chamber 20d in the stirring step can be adjusted.

FIG. 9 shows a beverage producing section according to a third embodiment of the present invention. The beverage production unit 2 includes a beverage receiver 22
A plurality of air pipes having different inner diameters D, that is, an air pipe 52A having a small resistance, an air pipe 52B having a medium resistance,
And an air pipe 52C having a large resistance is provided in parallel, and an air solenoid valve 51 is provided in each of the air pipes 52A, 57B, 57C.
A, 51B, 51C, and each air pipe 52A, 5
7B and 57C are connected to the beverage receiver 22 via the E branch 56, and the control unit 8 selects and opens the air electromagnetic valves 51A, 51B and 51C according to the type of the coffee beverage,
The amount of air supplied to the extraction chamber 20d is adjusted. Thus, an AC motor having a constant rotation speed can be used as the motor of the air pump 2B.

FIG. 10 shows a beverage producing section according to a fourth embodiment of the present invention. The beverage production unit 2 includes an extraction chamber 20
A U-branch 57 is provided instead of the T-branch 54 in the air pipe 52 connected to the inlet 20f of d, an air solenoid valve 55 for releasing air to one side of the U-branch 57, and a pressure sensor 58 is provided in the other of the U-branch 57. The control unit 8 closes the communication port 20e in the stirring step to close the extraction chamber 20d, and supplies the air from the air pump 2B via the solenoid valve 51 to the extraction chamber 20d according to the type of the coffee beverage. Is to adjust. Although the internal pressure of the extraction chamber 20d rises due to the air sent from the air pump 2B into the extraction chamber 20d, the inflow decreases, but the internal pressure decreases by opening the air release air solenoid valve 55, and the inflow increases. The control unit 8 controls the extraction chamber 20
The internal pressure d is detected by the pressure sensor 57, and based on this detection, the air release air solenoid valve 55 is opened and closed, and the amount of air to the extraction chamber 20d is adjusted by adjusting the amount of air release. Thus, an AC motor having a constant rotation speed can be used as the motor of the air pump 2B.

In addition, instead of the air solenoid valve 55 for opening to the atmosphere, a relief valve that opens when the internal pressure of the extraction chamber 20d becomes higher than a predetermined value is incorporated in the extraction chamber 20d.
When air is supplied to the extraction chamber 2 by operating the relief valve
The amount of air supplied to 0d may be adjusted.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the above embodiment, air is used as the gas to be supplied to the extraction chamber 20d in the stirring step, but other gases such as nitrogen gas, carbon dioxide gas, and inert gas may be used. Further, in the above embodiment, the case where the pump is used as the gas generating source has been described. However, the gas cylinder may be used in the above third and fourth embodiments, and after the gas from the gas cylinder is depressurized, the electromagnetic valve is used. May be supplied to the extraction chamber 20d via the. When the vending machine uses a carbon dioxide gas cylinder for producing a carbonated beverage, an air pump for stirring can be omitted, and the configuration can be simplified.

[0041]

As described above, according to the beverage brewing apparatus of the present invention, the amount of gas supplied to the brewing chamber is adjusted according to the type of beverage, so that the flavor according to the type of beverage is improved. A beverage having the same can be manufactured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a cup-type vending machine according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a beverage manufacturing unit according to the first embodiment.

3A and 3B show characteristics of a motor of the air pump according to the first embodiment, wherein FIG. 3A is a diagram showing a relationship between an applied voltage and a rotation speed, and FIG.
7 is a diagram showing the relationship between the number of revolutions and the discharge amount.

FIG. 4 is a diagram illustrating a standby state of the beverage manufacturing unit according to the first embodiment.

FIG. 5 is a diagram illustrating a stirring step of the beverage manufacturing unit according to the first embodiment.

FIG. 6 is a diagram illustrating an extraction process of the beverage manufacturing unit according to the first embodiment.

FIGS. 7 (a) and 7 (b) are views showing a slag discarding process of the beverage production section according to the first embodiment.

FIG. 8 shows characteristics of a motor of an air pump in a cup-type vending machine according to a second embodiment of the present invention, wherein (a)
Is a diagram showing the relationship between the ON / OFF time by PWM and the number of revolutions,
(b) is a relationship diagram between the number of rotations and the discharge amount.

FIG. 9 is a configuration diagram of a beverage production section of a cup-type vending machine according to a third embodiment of the present invention.

FIG. 10 is a configuration diagram of a beverage production section of a cup-type vending machine according to a fourth embodiment of the present invention.

FIG. 11 is a configuration diagram of a conventional beverage extraction device.

FIG. 12 is a diagram showing an extraction process of a conventional beverage extraction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vending machine 2 Beverage production part 2A Powder chute 2B Air pump 3 Tray 4 Cup 5 Cup supply part 6 Additional mixing part 7 Raw material part 8 Beverage production control part 9 Main control part 20 Cylinder 20a Supply port 20b Upper chamber 20c Discharge port 20d Extraction Chamber 20e Communication port 20f Inlet 21 Paper filter 21A shaft 21B Filter detection lever 21C Filter remaining amount detection sensor 22 Beverage receiver 22a Opening 22A Rubber packing 22B Roller 22C Drink supply pipe 22D Waste pipe 24 Extraction motor 25 Reduction gear 25a, 25b Output shaft 26 Support plate 26a Bearing 27A Cylinder cam 27B Valve cam 28A Cylinder drive plate 28B Valve drive plate 28a, 28b, 28c Locking member 29A Cylinder cam follower 29B Valve cam follower 30 Tension coil spring 3 1A, 31B, 31C Connecting member 32 Lever 32a Pin 32b Pin 33 Connecting member 34 Tension coil spring 35 Position detecting plate 36 Position detecting sensor 40 Discarding section 40A Discarding motor 41 Reducer 41a Output shaft 44a Notch section 45 Guide roller 46 Pressing Plate 46a Support shaft 47 Fixing plate 48 Pressing cam 48a Projection 50 Upper air solenoid valve 51 Lower air solenoid valve 51A, 51B, 51C Air solenoid valve 52, 52A, 52B, 52C Air pipe 53 Beverage supply solenoid valve 54 T branch 55 Open to atmosphere Air solenoid valve 56 E branch 57 U branch 58 Pressure sensor 60 Chute 61 Mixing ball 61a Supply pipe 70 Hot water tank 71 Coffee raw material container 71a, 72a, 73a Supply port 72 Sugar raw material container 73 Cream raw material container 74 Tap water electromagnetic valve 75 Over data 76 Temperature sensor 77 float 78 hot water pipe 79 hot solenoid valve D inner diameter

Claims (10)

[Claims] 1. An upper chamber to which a beverage material and hot water are supplied, and an extraction chamber provided at a lower portion of the upper chamber via a communication port opened and closed by a valve, wherein the communication port is provided from the upper chamber. In a beverage extraction device for promoting extraction of a beverage by stirring a mixture of the beverage raw material and the hot water supplied to the extraction chamber via gas with a gas, a valve that moves the valve to open and close the communication port A driving unit, a gas supply unit that supplies the gas to the extraction chamber, and when the mixed liquid is supplied to the extraction chamber from the upper chamber through the communication port, the valve control unit controls the valve driving unit. Control means for opening a communication port and controlling the gas supply means according to the kind of the beverage to adjust the amount of the gas supplied to the extraction chamber. 2. The beverage according to claim 1, wherein said gas supply means includes a gas generation source capable of changing a discharge amount of said gas, and said control means adjusts a discharge amount of said gas from said gas generation source. Extraction device. 3. The beverage brewing apparatus according to claim 2, wherein said gas generating source is a variable-speed pump, and said control means controls the number of revolutions of said variable-speed pump. 4. The gas supply means is provided in parallel with a gas generation source having a constant discharge rate of the gas and between the gas generation source and the extraction chamber, and supplies the gas from the gas generation source. The beverage according to claim 1, further comprising a plurality of supply pipes having different resistances supplied by the extraction chamber, wherein the control unit selects the supply pipe according to a type of the beverage among the plurality of supply pipes. Extraction device. 5. The gas supply means includes a gas generation source having a constant discharge rate of the gas, and an air release valve provided in the extraction chamber or an air release pipe connected to the extraction chamber. 2. The beverage brewing apparatus according to claim 1, wherein the control means controls the opening and closing of the air release valve according to the type of the beverage. 6. The beverage extraction device according to claim 4, wherein the gas generation source is a pump that discharges the gas at a constant rate. 7. The beverage brewing apparatus according to claim 4, wherein the gas generation source is a gas cylinder that discharges the gas at a constant rate. 8. The beverage brewing apparatus according to claim 1, wherein said gas supply means uses air as said gas. 9. The beverage brewing apparatus according to claim 1, wherein said gas supply means uses carbon dioxide gas as said gas. 10. A beverage extraction apparatus for extracting a beverage after stirring a beverage ingredient and hot water while supplying a predetermined amount of gas, comprising: a signal generation means for generating a beverage signal according to the type of the beverage; An extraction chamber for agitating a beverage material and the hot water, and extracting the beverage; and a control means for controlling the predetermined amount of the gas supplied to the extraction chamber to an amount according to the beverage signal when the agitation is performed. A beverage extraction device comprising: