JP3796045B2 - Beverage extractor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a beverage extraction apparatus applied to, for example, a cup-type vending machine that extracts coffee, tea, oolong tea, green tea, and the like from beverage ingredients and sells them in cups, and in particular, has a flavor according to the type of beverage. The present invention relates to a beverage extraction apparatus that can produce a beverage.
[0002]
[Prior art]
As a conventional beverage extraction device, for example, there is one disclosed in Japanese Utility Model Publication No. 61-118526.
[0003]
FIG. 11 shows this beverage extraction apparatus. The beverage extraction device 100 is supported so as to be movable up and down, and is disposed below the cylinder 101 and a cylinder 101 that discharges a mixed solution of powdered raw material (coffee powder) and hot water supplied from above. A filter 102 for filtering the discharged mixed liquid, a beverage receiver 104 including a rubber packing 103 for receiving a beverage extracted by filtration of the filter 102, and a beverage supply connected to the beverage receiver 104 and supplying the beverage to the cup side It has a pipe 105, a cam mechanism 106 comprising a pressing plate 106a and a cam 106b for opening and closing the beverage supply pipe 105, and a control unit (not shown) for controlling each part of the beverage extraction device 100.
[0004]
The cylinder 101 includes a mixing chamber 101b for mixing the powder raw material and hot water supplied from the supply port 101a provided at the upper side, and an extraction chamber for discharging the mixed liquid from the discharge port 101c provided at the lower side to perform a beverage extraction process. 101d, and the mixing chamber 101b communicates with the extraction chamber 101d through a communication port 101e. The communication port 101e is opened and closed by a valve 107, and an air pipe 109 for introducing pressurized air from an air pump 108 is connected to the extraction chamber 101d.
[0005]
In the beverage extraction device 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. The rubber packing 103 of the receiver 104 is brought into close contact. Thereafter, powder raw material and hot water are supplied from the supply port 101a. The control unit drives the air pump 108 to supply pressurized air to the extraction chamber 101d through the air pipe 109. In this state, the valve 107 is slightly opened, and the pressurized air is sent from the extraction chamber 101d to the mixing chamber 101b through the communication port 101e, and the mixture of the powder raw material and hot water supplied into the mixing chamber 101b is stirred. To do. When the liquid mixture is sufficiently stirred, the driving of the air pump 108 is stopped, and the liquid mixture flows into the extraction chamber 101d through the communication port 101e.
[0006]
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 and close the communication port 101e. Then, the air pump 108 is driven to supply pressurized air to the extraction chamber 101d through the air pipe 109. The mixed liquid stored in the extraction chamber 101d is filtered by the filter 102 with pressurized air, and the cam 106b rotates by a predetermined angle based on the drive of a supply motor (not shown), whereby the beverage supply pipe 105 by the pressing plate 106a. Is released, and the beverage supply pipe 105 is opened.
[0007]
When the coffee extract filtered by the filter 102 is supplied to the cup side via the beverage supply pipe 105, the control unit moves the cylinder 101 to the trash disposal position P ′ and removes the filter 102 from the beverage receiver 104. At the same time, the soot remaining on the filter 102 is discarded. When the beverage extraction operation is thus completed, the control unit drives the extraction drive motor to return the cylinder 101 to the standby position P.
[0008]
According to the vending machine 100, since the coffee is extracted by stirring the mixed liquid of the powdered beverage and hot water with the pressurized air, efficient extraction can be performed.
[0009]
[Problems to be solved by the invention]
However, according to the conventional beverage extraction device 100, when stirring the mixed liquid of the powder raw material and hot water, the amount of pressurized air fed into the mixing chamber 101b is constant, so even if the type of coffee beverage is different, There was a problem that the elution degree of coffee components such as taste, astringency, bitterness, and sourness became constant, and a flavor corresponding to the type of coffee beverage could not be obtained.
[0010]
Therefore, the objective of this invention is providing the drink extraction apparatus which can manufacture the drink which has the flavor according to the kind of drink.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has an upper chamber to which beverage ingredients and hot water are supplied, and an extraction chamber provided at a lower portion of the upper chamber through a communication port opened and closed by a valve. In a beverage extraction device that promotes the extraction of a beverage by stirring the mixed liquid consisting of the beverage raw material and the hot water supplied from the upper chamber to the extraction chamber via the communication port with gas, the valve is moved to A valve driving means for opening and closing the communication port; a gas supply means for supplying the gas to the extraction chamber; and the valve drive when the liquid mixture is supplied to the extraction chamber from the upper chamber via the communication port. and controls the means to open the communication port, by controlling the gas supply means in accordance with the type of the beverage and a control means for adjusting the amount of the gas supplied to the extraction chamber, the gas supply means Is a gas generator with a constant gas discharge rate. And a plurality of supply pipes provided in parallel between the gas generation source and the extraction chamber and having different resistances for supplying the gas from the gas generation source to the extraction chamber. The beverage extraction apparatus is characterized in that the supply pipe is selected according to the type of the beverage among the plurality of supply pipes .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
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 production unit 2 that extracts and produces a beverage from a mixed liquid of a powder raw material (for example, coffee powder) and hot water, a cup supply unit 5 that supplies a cup 4 to a tray 3, and a beverage. An additional mixing unit 6 for adding sugar or cream to the coffee beverage manufactured by the manufacturing unit 2 and supplying the coffee beverage to the cup 4 on the tray 3, and supplying the powder raw material and hot water to the beverage manufacturing unit 2, and an additional mixing unit 6 A raw material unit 7 for supplying sugar or cream to the beverage, a beverage production control unit 8 for controlling the beverage production unit 2, and a main control unit 9 for controlling the whole of the vending machine 1.
[0013]
The raw material section 7 supplies hot water tank 70 for storing hot water, a coffee raw material container 71 for supplying 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 from a supply port 73a. The cream raw material container 73 is provided. The raw material section 7 heats the tap water supplied to the hot water tank 70 from the tap water electromagnetic valve 74 and supplies the hot water to the hot water tank 70 to extract hot water of a predetermined temperature. The heater 75, the temperature sensor 76 for detecting the temperature of the hot water in the hot water tank 70 heated by the heater 75, the 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 are produced as beverages. A hot water solenoid valve 79 is provided to supply the unit 2 via a hot water pipe 78.
[0014]
The additional mixing unit 6 includes the sugar raw material container 72 and the cream raw material 72 on the 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 the extracted beverage supplied from the beverage manufacturing unit 2. A mixing ball 61 is provided that mixes sugar and cream supplied from the supply ports 72a and 73a of the container 73 via the shooter 60 and supplies the mixture to the cup 4 via the supply pipe 61a.
[0015]
The beverage production unit 2 stirs a mixed liquid composed of the powder raw material supplied via the powder chute 2A and hot water supplied via the hot water pipe 78 and discharges it downward, and is discharged from the cylinder 20. A paper filter 21 that filters the mixed liquid, a beverage receiver 22 that receives the beverage extracted by the filtration of the paper filter 21 and supplies it to the mixing ball 61 via the beverage supply pipe 22C, and an upper air electromagnetic wave provided in the air pipe 52 An air pump 2B that sends pressurized air to the extraction chamber 20d via the valve 50 and sends pressurized air to the beverage receiver 22 via the lower air electromagnetic valve 51 provided on the air pipe 52 is provided. The air pump 2 </ b> B is a diaphragm type pump driven by a DC motor, and the rotation speed is controlled by voltage control of the control unit 8.
[0016]
FIG. 2 shows the details of the beverage production unit 2. The beverage production unit 2 is supported by a guide rail (not shown) so as to be movable up and down, and is disposed below the cylinder 20 and a cylinder 20 that stirs and discharges the mixed liquid of the powder raw material and hot water supplied from above. And a paper filter 21 that filters the mixed liquid discharged from the cylinder 20, a beverage receiver 22 that receives the beverage extracted by the filtration of the paper filter 21, and a disposal processing unit 40 that discards straw and the like.
[0017]
The cylinder 20 is configured to extract the beverage by discharging the mixed material of the powder raw material and hot water from the upper chamber 20b for receiving the powder raw material and hot water supplied from the supply port 20a provided at the upper side, and the discharge port 20c provided at the lower side. The upper chamber 20b and the extraction chamber 20d are formed to communicate with each other through a communication port 20e. The communication port 20e is opened and closed by a valve 23, and the extraction chamber 20d is provided with an introduction port 20f for introducing pressurized air from the air pump 2B.
[0018]
The paper filter 21 is set in a roll shape on a rotatable shaft 21 </ b> A, and is configured to be pulled out to the left in FIG. 2 by driving the disposal processing motor 40 of the disposal processing unit 4. In the detection of the remaining amount of the paper filter 21, the base end side is rotatably supported, the middle part or the distal end side is always in contact with the roll-shaped paper filter 21, and the remaining amount of the paper filter 21 is reduced. The detection lever 21B rotates to perform a switching operation, and a detection signal indicating that the paper filter 21 has been lost is output to a control unit to be described later, and is performed by a filter remaining amount detection sensor 21C such as a microswitch for use in alarm output or the like.
[0019]
The beverage receiver 22 is provided with an opening 22a at the top, provided with a rubber packing 22A for preventing the liquid mixture from leaking when the discharge port 20c of the cylinder 20 abuts around the opening 22a, and a paper filter 21 at the end. Are provided with a beverage supply pipe 22C for supplying beverages to the cup side and a disposal tube 22D for discarding beverages. The beverage supply pipe 22C is provided with a beverage supply electromagnetic valve 53.
[0020]
The beverage production unit 2 also has an extraction motor 24 and output shafts 25a and 25b projecting from both sides to reduce the rotational speed of the extraction motor 24 to a predetermined rotational speed, and one output shaft 25a. A support plate 26 having one end thereof supported by a bearing 26a, a cylinder cam 27A and a valve cam 27B fixed to one output shaft 25a, a cylinder drive plate 28A for driving the cylinder 20, and a valve drive plate 28B for driving the valve 23. A cylinder cam follower 29A attached to the cylinder drive plate 28A, a valve cam follower 29B attached to the valve drive plate 28B, a locking member 28a attached to the cylinder drive plate 28A, and an engagement attached to the valve drive plate 28B. Both ends are locked to the stop member 28b, and the cylinder drive plate 28A and the valve drive are A plurality of connecting members 31A, 31B, which connect the cylinder 20 and the cylinder drive plate 28A, and a tension coil spring 30 that pulls the plate 28B together to bring the cylinder cam follower 29A and the valve cam follower 29B into contact with the cylinder cam 27A and the valve cam 27B, respectively. 31C, a lever 32 rotatably connected to the valve 23 by a pin 32a on the tip side, a connecting member 33 attached to the valve drive plate 28B and rotatably connected to the lever 32 by a pin 32b, and a lever 32 A tension coil spring 34 having both ends locked to a rear end side and a locking member 28c attached to the valve drive plate 28B is provided. In the beverage production unit 2, the output shafts 25a and 25b and the output shaft 41a of the disposal processing unit 40 each rotate once to complete a series of steps of the stirring process, the extraction process, and the waste disposal process. .
[0021]
On the other output shaft 25b side of the speed reducer 25, a position detection mechanism for detecting a position corresponding to each process is provided. That is, one or more position detection plates 35 are attached to the other output shaft 25 b of the speed reducer 25, and one position detection plate 35 detects the rotational position of the position detection plate 35 around the position detection plate 35. Alternatively, position detection sensors 36 such as two or more photo sensors are arranged.
[0022]
The air pump 2B is connected to an inlet 20f of the extraction chamber 20d and an air pipe 52 leading to the beverage receiver 22. The air pipe 52 is provided with an upper air solenoid valve 50 and a T branch 54 upstream of the inlet 20f of the extraction chamber 20d. An air solenoid valve 55 for opening to the atmosphere branched via the air and a lower air solenoid valve 51 are provided in the front stage of the beverage receiver 22.
[0023]
The disposal processing unit 40 includes a disposal processing motor 40A, a speed reducer 41 that reduces the rotational speed of the disposal processing motor 40A to a predetermined rotational speed, and a notch 44a on the circumference, and an output shaft of the speed reduction gear 41. A filter feed roller 44 that is attached to 41a and feeds the paper filter 21 by a certain length, a guide roller 45 that presses the paper filter 21 toward the pair of filter feed rollers 44 by a spring (not shown), and a pivot 46a. Is attached to the output shaft 41a of the speed reducer 41 and on the circumference for rotating the pressing plate 46. And a pressing cam 48 having a protrusion 48a.
[0024]
The main control unit 9 outputs a sales signal corresponding to the requested type of coffee beverage to the control unit 8 every time there is a coffee beverage sales request, and controls the hot water electromagnetic valve 70e to supply a certain amount of hot water. It supplies to the beverage production part 2 via the hot water pipe 78, controls the coffee raw material container 71 to supply a certain amount of coffee raw material to the beverage production part 2, and depending on the type of coffee beverage, the sugar raw material container 72 and the cream raw material The container 73 is controlled and necessary sugar and cream are supplied to the additional mixing unit 6. The main control unit 9 controls the heater 75 and the tap water electromagnetic valve 74 so that the hot water temperature and the amount of hot water in the hot water tank 70 are kept constant based on the detection of the temperature sensor 76 and the float 77. .
[0025]
When the sales signal is output from the main control unit 9, the control unit 8 causes the beverage production unit 2 to perform a series of processes of beverage extraction control, that is, the stirring process, the extraction process, and the waste disposal process, and the stirring process. At this time, the amount of air supplied to the extraction chamber 20d is adjusted by controlling the number of revolutions of the direct current motor of the air pump 2B according to the type of beverage, and the stirring strength is changed between strong, medium and weak. The discharge amount of the air pump 2B with strong, medium and weak stirring strength is, for example, 6 L / min, 5 L / min, and 2.5 L / min, respectively. For example, when selling hot black coffee, when selling weak agitation, hot sugar and / or creamed coffee, when selling medium agitation, cold (with ice) black coffee If you are selling coffee with medium agitation power, cold sugar and / or cream, control the amount of air to achieve a strong agitation power.
[0026]
FIG. 3 shows the characteristics of the DC motor of the air pump 2B. The rotational speed of the direct current motor of the air pump 2B is proportional to the voltage applied to the direct current motor as shown in the figure (a), and the amount of air discharged from the air pump 2B is as shown in the figure (b). It is proportional to the rotational speed of the DC motor. Therefore, the amount of air supplied to the extraction chamber 20d in the stirring process can be adjusted by controlling the voltage applied to the DC motor of the air pump 2B by the control unit 8. Note that the rotational speed 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.
[0027]
Next, the operation of the vending machine 1 will be described with reference to FIGS.
[0028]
(1) Standby State FIG. 4 shows the standby state of the vending machine 1. In the standby state, the main part of the vending machine 1 is at the standby position P ₁ shown in FIG. In this standby state, the position detecting sensor 36 detects the standby position P _1, the pressing plate 46 is in contact with the pressing cam 48 by the elastic force of the waste pipe 22D, the solenoid valves 50,51,53,55 are closed Yes.
[0029]
(2) stirring process control unit 8, when the sales signals from the main control unit 9 is input, controls the movement of the stirring position P ₂ from the standby position P _1. That is, the control unit 8 drives the disposal motor 40 to rotate forward (drive in which the pressing cam 48 rotates counterclockwise in FIG. 2). The driving torque of the disposal motor 40 is transmitted to the output shaft 41a via the speed reducer 41, the output shaft 41a rotates forward by about 60 °, and the protrusion 48a of the pressing cam 48 is pressed against the pressing plate as shown in FIG. By pressing 46, the waste pipe 22 </ b> D is closed between the pressing plate 46 and the fixed plate 47. Subsequently, the control unit 8 drives the extraction motor 24 to rotate forward (drive in which the output shaft 25a rotates in the arrow direction in FIG. 2). The drive torque of the extraction motor 24 is transmitted to the output shafts 25a and 25b via the speed reducer 25, the output shafts 25a and 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 descends. 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 drive plate 28B is lowered, the valve 32 is also lowered via the connecting member 33 and the lever 32. Position detecting 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.
[0030]
FIG. 5 shows the stirring step. When the main part of the vending machine 1 reaches the stirring position P ₂ and enters the state shown in FIG. 5, the control unit 8 performs the stirring process. In this stirring step, the communication port 20e is opened. The control unit 8 outputs a powder raw material and hot water supply request signal to the main control unit 9. Under the control of the main controller 9, the powder raw material and hot water are supplied to the supply port 20a of the upper chamber 20b and flow into the extraction chamber 20d through the communication port 20e. Next, the control unit 8 opens the lower air solenoid valve 51 in accordance with the supply of the powder raw material and 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 coffee beverage. The air pump 2 </ b> B sends pressurized air in an amount corresponding to the type of coffee beverage 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 this pressurized air passes through the liquid mixture in the extraction chamber 20d, the flow of bubbles acts to stir the liquid mixture.
[0031]
(3) Extraction Process FIG. 6 shows the extraction process of the vending machine 1. Control unit 8, the time agitation preset elapses, close the lower air solenoid valve 51, the air pump 2B is stopped and rotated forward the extracted motor 24 to the position detection sensor 36 detects the extracted position P ₃ . The valve 23 is further raised by driving the extraction motor 24 and closes the communication port 20e. When the main part of the vending machine 1 reaches the extraction position P ₃ and enters the state shown in FIG. 6, the control unit 8 performs the extraction process. 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 pressurized air from the air pump 2B from the inlet 20f above the extraction chamber 20d. The mixed liquid in the extraction chamber 20d is pumped downward by the pressurized air from the air pump 2B and filtered by the paper filter 21. The coffee beverage filtered by the paper filter 21 is supplied to the cup side via the beverage receiver 22 and the beverage supply pipe 22C. By sending pressurized air to the extraction chamber 20d, the air pressure in the extraction chamber 20d increases and the mixed solution is pushed down to the paper filter 21 side, so that the mixed solution is separated into coffee drinks and straws in a short time and efficiently. It can be filtered.
[0032]
(4) Waste disposal process Figures 7 (a) and 7 (b) show the waste disposal process of the vending machine 1. After a predetermined extraction time has elapsed, the control unit 8, extracts until close the upper air solenoid valve 50 and the beverage supply solenoid valve 53, the air pump 2B is stopped, the position detecting sensor 36 detects the dregs discarding position P ₄ The motor 24 is driven forward. The cylinder 20 and the valve 23 are raised to the highest position by driving the extraction motor 24. When the main part of the vending machine 1 reaches the waste disposal position P ₄ and enters the state shown in FIG. 7 (a), the control unit 8 performs a disposal process for the waste 7 remaining on the paper filter 21. That is, the control unit 8 drives the disposal processing motor 40 to rotate forward. The driving torque of the disposal motor 40 is transmitted to the output shaft 41a via the speed reducer 41, the output shaft 41a rotates forward, and the filter feed roller 44 rotates to pull out the paper filter 21. When the ridge 7 on the paper filter 21 passes the roller 22B, the ridge 7 is folded away from the paper filter 21 as shown by the imaginary line in FIG. 7 (b), and falls into a waste bucket (not shown).
[0033]
(5) Returning operation to the standby state When the discarding step is completed, the control unit 8 drives the extraction motor 24 and the disposal processing motor 40 to rotate forward. The main part of the vending machine 1 returns to the standby state shown in FIG. Thereafter, the above operations (1) to (5) are repeated each time a sales signal is input to the control unit 8.
[0034]
According to the vending machine 1 configured as described above, since the amount of air supplied to the extraction chamber 20d is adjusted in accordance with the type of coffee beverage in the stirring step, a coffee beverage having a flavor corresponding to the type of coffee beverage is selected. Can be manufactured. That is, when selling black coffee, the amount of air discharged into the extraction chamber 20d is suppressed and stirring is performed with a weak stirring force, so that a coffee with a rich sense of transparency and less miscellaneous taste can be produced. In addition, when selling coffee containing sugar or cream, the amount of air discharged into the extraction chamber 20d is increased and stirred with a strong stirring force, so that coffee with strong astringency and bitterness should be produced. And can provide coffee beverages according to customer preferences.
[0035]
Note that the amount of air supplied from the air pump 2B to the extraction chamber 20d may be adjusted by controlling the air solenoid valve 55 for opening to the atmosphere while keeping the amount of air discharged from the air pump 2B constant. As a result, an AC motor having a constant rotational speed can be used as the motor of the air pump 2B.
[0036]
FIG. 8 shows a second embodiment of the present invention. In the second embodiment, a DC motor is used for the motor of the air pump 2B as in the first embodiment, and the control unit 8 rotates the DC motor of the air pump 2B in a PWM system according to the type of coffee beverage. Number control. The rotational speed of the DC motor is proportional to the ON / OFF time by PWM as shown in FIG. 5A, and the amount of air discharged from the air pump 2B is as shown in FIG. Proportional to rotation speed. Therefore, the amount of air supplied to the extraction chamber 20d in the stirring process can be adjusted by controlling the DC motor of the air pump 2B by PWM by the control unit 8.
[0037]
FIG. 9 shows a beverage production unit according to the third embodiment of the present invention. The beverage production unit 2 includes a plurality of air pipes having different inner diameters D as air pipes connecting the beverage receiver 22 and the air pump 2B, that is, an air pipe 52A having a small resistance, an air pipe 52B having a resistance, and a large resistance. Air pipes 52C are provided in parallel, air solenoid valves 51A, 51B, and 51C are interposed in the air pipes 52A, 57B, and 57C, and the air pipes 52A, 57B, and 57C are connected to the beverage receiver 22 via the E branch 56, and controlled. The part 8 adjusts the amount of air supplied to the extraction chamber 20d by selecting and opening the air solenoid valves 51A, 51B, 51C according to the type of coffee beverage. As a result, an AC motor having a constant rotational speed can be used as the motor of the air pump 2B.
[0038]
FIG. 10 shows a beverage production unit according to the fourth embodiment of the present invention. The beverage production unit 2 includes a U branch 57 instead of the T branch 54 in the air pipe 52 connected to the inlet 20f of the extraction chamber 20d, and an air release air solenoid valve 55 on one side of the U branch 57. A pressure sensor 58 is provided on the other side of the branch 57, and the control unit 8 closes the communication port 20e in the stirring process to make the extraction chamber 20d sealed, and depending on the type of coffee beverage from the air pump 2B via the electromagnetic valve 51. The amount of air supplied to the extraction chamber 20d is adjusted. Although the internal pressure of the extraction chamber 20d is increased by the air sent from the air pump 2B to the extraction chamber 20d and the inflow amount is decreased, the internal pressure is decreased and the inflow amount is increased by opening the air release air electromagnetic valve 55. The control unit 8 detects the internal pressure of the extraction chamber 20d with the pressure sensor 57, and based on this detection, opens and closes the air solenoid valve 55 for opening the atmosphere, and adjusts the amount of air released to adjust the amount of air to the extraction chamber 20d. Adjust the amount. As a result, an AC motor having a constant rotational speed can be used as the motor of the air pump 2B.
[0039]
A relief valve that opens when the internal pressure of the extraction chamber 20d exceeds a certain value is incorporated in the extraction chamber 20d instead of the air solenoid valve 55 for opening the atmosphere, and the relief valve is operated when air is supplied to the extraction chamber 20d. The amount of air supplied to the extraction chamber 20d may be adjusted.
[0040]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible. For example, in the above embodiment, air is used as the gas 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.
In the above embodiment, the case where a pump is used as a gas generation source has been described. However, a gas cylinder may be used in the third and fourth embodiments, and a solenoid valve is used after decompressing the gas from the gas cylinder. You may make it supply to the extraction chamber 20d via. When the vending machine uses a carbon dioxide gas cylinder for producing carbonated beverages, the air pump for stirring can be omitted, and the configuration can be simplified.
[0041]
【The invention's effect】
As described above, according to the beverage extraction device of the present invention, the amount of gas supplied to the extraction chamber is adjusted according to the type of beverage, so a beverage having a flavor according to the type of beverage is produced. be able to.
[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.
FIGS. 3A and 3B show characteristics of the motor of the air pump according to the first embodiment, in which FIG. 3A is a relationship diagram between an applied voltage and a rotation speed, and FIG.
FIG. 4 is a diagram showing a standby state of the beverage manufacturing unit according to the first embodiment.
FIG. 5 is a diagram showing an agitation process of the beverage production unit according to the first embodiment.
FIG. 6 is a diagram showing an extraction process of the beverage manufacturing unit according to the first embodiment.
FIGS. 7A and 7B are diagrams showing a waste disposal process of the beverage production unit according to the first embodiment.
FIG. 8 shows the characteristics of an air pump motor in a cup-type vending machine according to a second embodiment of the present invention, (a) is a relationship diagram between ON / OFF time by PWM and the number of revolutions, (b) Is a relationship diagram between the rotation speed 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 manufacturing unit 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 Outlet 20d Extraction Chamber 20e Communication port 20f Inlet port 21 Paper filter 21A Shaft 21B Filter detection lever 21C Filter remaining amount detection sensor 22 Beverage receptacle 22a Opening 22A Rubber packing 22B Roller 22C Beverage supply pipe 22D Waste pipe 24 Extraction motor 25 Reduction gears 25a, 25b Output shaft 26 Support plate 26a Bearing 27A Cylinder cam 27B Valve cam 28A Cylinder drive plate 28B Valve drive plates 28a, 28b, 28c Locking member 29A Cylinder cam follower 29B Valve cam follower 30 Tension coil springs 31A, 31B, 31C 32 Lever 32a Pin 32b Pin 33 Connecting member 34 Tension coil spring 35 Position detection plate 36 Position detection sensor 40 Discard processing unit 40A Discard processing motor 41 Reducer 41a Output shaft 44a Notch 45 Guide roller 46 Press plate 46a Support shaft 47 Fixing plate 48 Press 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 Air release 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 solenoid valve 75 Heater 76 Temperature sensor 77 Float 78 Hot water Pipe 79 hot water Solenoid valve D inner diameter

Claims (6)

An upper chamber to which beverage ingredients and hot water are supplied, and an extraction chamber provided at a lower portion of the upper chamber through a communication port opened and closed by a valve, and the extraction from the upper chamber through the communication port In a beverage extraction device that promotes the extraction of a beverage by stirring the mixed liquid consisting of the beverage raw material and the hot water supplied to a chamber with a gas, the valve driving means for moving the valve to open and close the communication port; and A gas supply means for supplying the gas to the extraction chamber; and when the liquid mixture is supplied to the extraction chamber from the upper chamber via the communication port, the valve driving means is controlled to open the communication port. And a control means for adjusting the amount of the gas supplied to the extraction chamber by controlling the gas supply means in accordance with the type of the beverage, the gas supply means having a constant gas discharge amount. Generation source, gas generation source and extraction chamber A plurality of supply pipes having different resistances for supplying the gas from the gas generation source to the extraction chamber, and the control means includes the kind of the beverage among the plurality of supply pipes The beverage extraction device is characterized in that the supply pipe is selected according to the condition.   The gas supply means includes a gas generation source having a constant gas discharge amount, and an atmosphere release valve provided in the extraction chamber or an atmosphere release pipe connected to the extraction chamber. The beverage extraction device according to claim 1, wherein the opening / closing control of the air release valve is performed according to a type of the beverage. The beverage extraction device according to claim 1 or 2 , wherein the gas generation source is a pump having a constant discharge amount of the gas. The beverage extraction apparatus according to claim 1 or 2 , wherein the gas generation source is a gas cylinder in which the discharge amount of the gas is constant.   The beverage extraction apparatus according to claim 1, wherein the gas supply means uses air as the gas.   The beverage extraction apparatus according to claim 1, wherein the gas supply means uses carbon dioxide gas as the gas.

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