JPWO2016132412A1 - Beverage supply equipment - Google Patents

Abstract

To provide a space-saving beverage supply device capable of supplying a plurality of types of coffee. In the beverage supply device (100), the control unit (50) inputs the coffee bean into the cylinder (311) with the coffee bean powder pulverized with a particle size corresponding to the type selected by the selection operation on the touch panel (3). The operation differs depending on the type of coffee selected by the selection operation and the compression operation of inserting the cap (37) into the cylinder (311) and compressing the coffee bean powder with different pressures depending on the type of coffee selected in the selection operation. Coffee liquid extraction operation for supplying hot water to the cylinder by the hot water pump at the supply speed to extract the coffee liquid is sequentially executed.

Description

  The present invention relates to a beverage supply device that introduces hot water into a container filled with coffee bean powder to extract coffee liquid.

  2. Description of the Related Art Conventionally, a beverage supply device has been installed in which a beverage container such as a cup is placed in a restaurant, a cafe, or the like and coffee or juice is supplied by simply pressing a button. For example, Patent Document 1 discloses a beverage production apparatus that can produce and supply pressure extraction type coffee (hereinafter referred to as espresso).

Japanese Patent No. 5450152

  The beverage production apparatus disclosed in Patent Document 1 includes, for example, a cylinder that can move up and down, and a cap that is fixed to the upper part of the cylinder and that fits into the opening of the cylinder as the cylinder rises. And after putting the ground coffee beans into the cylinder, pressurizing the coffee beans in the cylinder by raising the cylinder and fitting the cap into the cylinder, and then pressurizing from the hot water tank into the cylinder with a hot water pump Introduce hot water. As a result, the inside of the cylinder is pressurized and hot water penetrates into the coffee bean structure, and a dark coffee liquid, that is, espresso is obtained.

  By the way, customers such as restaurants and cafes want to drink not only espresso but also drip coffee. If both a beverage production device for drip coffee and a beverage production device for espresso are installed side by side, the installation space becomes large. Therefore, it is desirable that the drip coffee and espresso can be produced by a single beverage production device. Conventionally, there is one that can produce drip coffee and espresso with one beverage production device, but most of them include a mechanism for producing drip coffee and a mechanism for producing espresso separately, There was a problem that it was not desirable in terms of installation space.

  An object of the present invention is to provide a space-saving beverage supply device that can supply a plurality of types of coffee.

  The beverage supply device of the present invention includes an operation unit that receives a selection operation for selecting one of a plurality of types of coffee, a cylinder that stores coffee bean powder, a cap that closes an opening of the cylinder, A hot water pump for supplying hot water to the cylinder, and a control unit for controlling the operation of inserting the cap into the cylinder so as to compress the coffee bean powder with a different pressure depending on the type of coffee selected in the selection operation. And having.

  ADVANTAGE OF THE INVENTION According to this invention, the drink supply apparatus of the space saving which can supply multiple types of coffee can be provided.

The perspective view of the external structure of the drink supply apparatus which concerns on embodiment of this invention The perspective view of the drink supply mechanism which concerns on embodiment of this invention Side view of beverage supply mechanism according to an embodiment of the present invention The figure which showed the flow of the hot water in the drink supply mechanism which concerns on embodiment of this invention The perspective view of the coffee extraction part which concerns on embodiment of this invention The functional block diagram which shows each function part of the drink supply apparatus which concerns on embodiment of this invention. Operation explanatory drawing of coffee supply operation concerning an embodiment of the invention Operation explanatory drawing of coffee supply operation concerning an embodiment of the invention Operation explanatory drawing of coffee supply operation concerning an embodiment of the invention Operation explanatory drawing of coffee supply operation concerning an embodiment of the invention Operation explanatory drawing of coffee supply operation concerning an embodiment of the invention The figure which shows operation | movement of the principal part in connection with coffee extraction of the drink supply apparatus which concerns on embodiment of this invention. The figure which shows the relationship between the electric current value supplied to a motor in the drink supply apparatus which concerns on embodiment of this invention, and the kind of coffee.

  Hereinafter, a beverage supply device according to an embodiment of the present invention will be described in detail.

[External structure of beverage supply apparatus 100]
First, the external structure of the beverage supply apparatus 100 will be described. FIG. 1 is a perspective view of a beverage supply apparatus 100 according to an embodiment of the present invention.

  As shown in FIG. 1, the beverage supply device 100 includes a housing 1, a front door 2, a touch panel 3, a coffee nozzle 4, a milk nozzle 5, a hot water nozzle 6, and a beverage container support 7.

  The housing 1 holds a beverage supply mechanism 10 to be described later, and a front door 2, a touch panel 3, a coffee nozzle 4, a milk nozzle 5, a hot water nozzle 6, and a beverage container support base 7 are attached to the front surface. Case member.

  The front door 2 is attached to the front surface of the housing 1 so as to be openable and closable, and is normally closed and locked so that the user cannot open and close it. The front door 2 is opened at the time of maintenance, for example, and the administrator of the beverage supply device 100 can access the beverage supply mechanism 10 housed in the beverage supply device 100 from the front surface of the housing 1.

  The touch panel 3 is an operation reception unit that displays beverage options, messages, and the like to the user of the beverage supply apparatus 100 and receives a beverage selection operation and a discharge instruction operation by the user. The beverage supply device 100 can supply different coffee such as drip-flavored coffee or espresso according to the user's selection operation on the touch panel 3.

  The drip coffee is generally a coffee liquid in which hot water is sprayed on coffee bean powder contained in a dripper, filtered by a filter set in the dripper, and dropped from the lower part of the dripper. The drip-flavored coffee supplied by the beverage supply apparatus 100 according to the present embodiment is one in which an extraction chamber is filled with coffee bean powder and extracted at a lower pressure than espresso, which is a pressure extraction type coffee. It is not a drip coffee because it is not filtered and dropped by a filter. However, the drip-flavored coffee supplied by the beverage supply device 100 of the present embodiment is referred to as such because it is substantially the same as the drip coffee in terms of flavor. These coffee supply methods will be described in detail later.

  The coffee nozzle 4 is a nozzle for providing coffee produced by the beverage supply mechanism 10 to a beverage container placed on a beverage container support 7 described later. The milk nozzle 5 is a nozzle for providing foamed milk or steamed milk to a beverage container. The coffee nozzle 4 and the milk nozzle 5 are arranged close to each other, and can mix coffee and milk in a beverage container to supply a mixed coffee / milk beverage such as café au lait, cafe latte, cappuccino, etc. It is configured as follows. The hot water nozzle 6 is a nozzle for providing only hot water to a beverage container for a user who uses a tea bag or the like.

  The beverage container support 7 is a table for placing a beverage container that receives the beverage (or hot water) discharged from each nozzle.

[Beverage supply mechanism 10]
Next, the beverage supply mechanism 10 will be described.

  FIG. 2 is a perspective view of the beverage supply mechanism 10, and FIG. 3 is a side view of the beverage supply mechanism 10. As shown in FIGS. 2 and 3, the beverage supply mechanism 10 includes a hot water tank 11, a hot water pump 12, a canister 13, a mill 14, a coffee grounds receiving unit 15, and a coffee extraction unit 30.

  The hot water tank 11 is a tank capable of storing several liters of hot water, and is provided with a heater (not shown) that heats and holds the stored drinking water at 97 ° C., for example. A hot water pump 12 provided near the bottom of the hot water tank 11 is a pump that pressurizes and discharges hot water in the hot water tank 11. The hot water pump 12 can adjust the pressure applied to the hot water according to the control of the control unit 50 described later.

  The canister 13 is a container for storing roasted coffee beans used for coffee production. A coffee bean acquisition port (not shown) is opened at the bottom of the canister 13, and coffee beans are supplied from the coffee bean acquisition port in accordance with the operation of the mill 14.

  The mill 14 grinds the coffee beans supplied from the canister 13 to a suitable particle size. By being pulverized by the mill 14, hot water can easily permeate into the coffee beans, and suitable coffee extraction is performed. The mill 14 is composed of two mills (not shown) having different particle sizes for pulverizing coffee beans. In the coffee extraction operation, coffee beans are crushed by a mill that can pulverize coffee beans to a particle size corresponding to the type of coffee selected on the touch panel 3.

  The coffee beans (coffee bean powder) crushed by the mill 14 are put into a coffee extraction unit 30 described later. Details of the coffee extraction operation by the coffee extraction unit 30 will be described later.

  The coffee grounds receiving part 15 stores the residue of the coffee bean powder used for the extraction of the coffee liquid by the coffee extracting part 30. The coffee cup receiving portion 15 is configured to be able to be pulled out forward when the front door 2 is opened, and can remove the stored coffee cup.

  FIG. 4 is a view showing the flow of hot water in the beverage supply mechanism 10. As shown in FIG. 4, one end of a hot water supply pipe 24 in which a hot water filter 21, a flow rate sensor 22, and a hot water supply valve 23 are sequentially arranged is connected to the discharge port of the hot water pump 12. The other end of the hot water supply pipe 24 is connected to a hot water supply port 313 provided in a cylinder unit 31 of the coffee extraction unit 30 described later. In the present embodiment, a connector 24A is provided at the other end of the hot water supply pipe 24, thereby being connected to the hot water supply port 313.

  The hot water supply pipe 24 is connected to a drain pipe 25 that is located between the hot water supply valve 23 and the coffee extraction unit 30 and branches from the hot water supply pipe 24 via a flow divider 29. The drain pipe 25 is provided with a drain valve 26. Furthermore, the coffee liquid piping 27 is connected to the coffee liquid extraction part 37B provided in the cap 37 of the coffee extraction part 30 mentioned later. An extraction valve 28 is provided in the coffee liquid pipe 27.

  The hot water filter 21 is a filter that removes impurities and the like of hot water supplied from the hot water tank 11 to the coffee extraction unit 30 via the hot water pump 12. The flow rate sensor 22 as the flow rate detection unit of the present invention measures the amount of hot water supplied from the hot water tank 11 to the coffee extraction unit 30. The hot water supply valve 23 is an electromagnetic valve that is opened and closed under the control of the control unit 50 of the beverage supply device 100 described later. The operation of the hot water supply valve 23 will be described in detail later. The hot water supply pipe 24 is a pipe part that forms a flow path of hot water from the hot water tank 11 to the coffee extraction part 30.

  The drain pipe 25 is a pipe part for controlling discharge of the residual liquid or the like in the coffee extraction part 30 or a coffee liquid pipe 27 described later to the outside. The drain valve 26 is an electromagnetic valve that is opened and closed under the control of the control unit 50, similarly to the hot water supply valve 23 described above. The operation of the drain valve 26 will be described in detail later.

  The coffee liquid pipe 27 is a pipe section for guiding the coffee liquid extracted by the coffee extraction section 30 to the coffee nozzle 4 described above. The extraction valve 28 is an electromagnetic valve that is opened and closed under the control of the control unit 50, similarly to the hot water supply valve 23 and the drain valve 26 described above. The operation of the extraction valve 28 will be described in detail later.

[Coffee extraction unit 30]
Next, the coffee extraction unit 30 will be described with reference to FIG. FIG. 5 is a perspective view of the coffee extraction unit 30. The coffee extraction unit 30 extracts coffee liquid by passing hot water through the coffee bean powder supplied from the mill 14.

  The coffee extraction unit 30 includes a cylinder unit 31, an elevating unit 32, an elevating shaft 33, a motor 34, a pulley 35, a frame unit 36, a cap 37, and a wiper 38.

  The cylinder unit 31 includes a cylinder 311 having an open upper surface and a water-permeable piston 312 that can move up and down in the cylinder 311. The hot water supply port 313 described above is arranged on the bottom side surface of the cylinder 311, and the connector 24 </ b> A of the hot water supply pipe 24 is detachably connected to the hot water supply port 313.

  The piston 312 includes a disk-like member and a rod-like member that are substantially equal to the inner diameter of the cylinder 311, and the rod-like member is fitted in a hole formed in the center of the lower surface of the cylinder 311 and extends downward of the cylinder 311. . On the upper surface of the piston 312, for example, a mesh filter for brewing coffee liquid is disposed.

  The raising / lowering part 32 as a moving part of this invention hold | maintains the cylinder unit 31 mentioned above. As the elevating part 32 moves up and down, the cylinder unit 31 moves up and down.

  The lifting shaft 33 is a shaft portion that supports the lifting portion 32. The elevating unit 32 moves up and down along the elevating shaft 33.

  The motor 34 raises and lowers the elevating unit 32, that is, the cylinder unit 31 in accordance with control of the control unit 50 described later.

  The pulley 35 is connected to the upper end portion of the lifting shaft 33 and transmits the rotation of the motor 34 to the lifting shaft 33. The above-described lifting shaft 33, motor 34, and pulley 35 are each held by a frame portion 36.

  For example, as shown in FIG. 5, the frame portion 36 includes an upper surface portion 36 </ b> A and a lower surface portion 36 </ b> B, and at least one pillar portion 36 </ b> C that connects these. Both ends of the elevating shaft 33 are connected to the upper surface portion 36A and the lower surface portion 36B, respectively. The pulley 35 is connected to the upper surface portion 36 </ b> A side of the elevating shaft 33, and the motor 34 is disposed in the vicinity thereof.

  With such a configuration, when the motor 34 rotates in the forward direction, the elevating shaft 33 rotates and the elevating part 32 rises, and the cylinder unit 31 held by the elevating part 32 also rises. On the contrary, when the motor 34 rotates in the reverse direction, the elevating unit 32 and the cylinder unit 31 descend.

  The cap 37 is a columnar member provided above the cylinder unit 31 in the upper surface portion 36 </ b> A of the frame portion 36. The cap 37 has a lower end substantially the same diameter as the upper surface opening of the cylinder 311, and the lower end of the cap 37 is fitted into the cylinder 311 when the cylinder unit 31 is raised. In other words, the opening of the cylinder 311 is closed by the cap 37 when the cylinder unit 31 is lifted together with the elevating part 32. Therefore, the cylinder 311 can be sealed by raising the cylinder unit 31. Here, the coffee beans crushed by the above-described mill 14 are sealed in the cylinder 311 by the cap 37, and hot water is introduced from the hot water supply port 313, whereby the coffee liquid can be extracted.

  In addition, an extraction port 37A (see FIG. 7 and the like) for leading the coffee liquid extracted in the cylinder 311 to the outside is formed on the lower surface of the cap 37, that is, the surface inserted into the cylinder 311. The extraction port 37A is formed to communicate with an extraction path (not shown) formed through the cap 37 in the vertical direction, and the other end of the extraction path is exposed on the upper surface of the cap 37 so as to remove the coffee liquid. 37B is formed. The coffee liquid piping 27 described above is connected to the coffee liquid extraction portion 37B.

  A sensor for detecting the position of the cylinder unit 31 is appropriately provided in the frame portion 36. As shown in FIG. 5, the position detection sensor includes an upper limit position detection sensor 41, a hot water supply position detection sensor 42, a coffee bean charging position detection sensor 43, and a lower limit position detection sensor 44 in order from the top. Each position detection sensor is an optical sensor (not shown) composed of, for example, a pair of light emitting elements and light receiving elements, and performs position detection by blocking light emitted from the light emitting elements in accordance with the elevation of the cylinder unit 31.

  The upper limit position detection sensor 41 is a sensor that detects the upper limit position of the cylinder unit 31. The hot water supply position detection sensor 42 is a sensor for detecting the position of the cylinder unit 31 for supplying hot water to the cylinder 311. The coffee bean charging position detection sensor 43 is a sensor for detecting the position of the cylinder unit 31 for charging the coffee beans crushed into the cylinder 311. The lower limit position detection sensor 44 is a sensor that detects the lower limit position of the cylinder unit 31.

  The wiper 38 is fixed to a part of the lifting / lowering part 32, for example, a position slightly above the upper end of the cylinder 311, and moves up and down together with the cylinder unit 31 and the lifting / lowering part 32. When the cylinder unit 31 reaches a predetermined height, the wiper 38 performs a wiping operation for jumping off the coffee grounds after the coffee liquid extraction with the fixed position as a fulcrum. The splashed coffee cake is stored in the coffee cake receiver 15 as described above.

[Control unit 50]
Next, the control part 50 of the drink supply apparatus 100 is demonstrated. FIG. 6 is a functional block diagram showing each functional unit of the beverage supply device 100. The control part 50 as a control means is comprised by the general purpose microcontroller, for example.

  On the input side of the control unit 50, the touch panel 3, the flow rate sensor 22, the upper limit position detection sensor 41, the hot water supply position detection sensor 42, the coffee bean charging position detection sensor 43, the lower limit position detection sensor 44, and the like are connected. And the hot water pump 12, the mill 14, the hot water supply valve 23, the drain valve 26, the extraction valve 28, the motor 34, etc. are connected to the output side.

  The control part 50 performs the operation | movement of the coffee supply in the drink supply apparatus 100 by performing the control of an output side based on the information input from the input side. In addition, in the drink supply apparatus 100 of this Embodiment, as above-mentioned, according to the user's selection operation with respect to the touch panel 3, two types of coffee of drip flavor coffee and espresso are supplied. Below, the coffee supply operation | movement in the drink supply apparatus 100 is demonstrated. In the following description, an operation that does not depend on the selected coffee type will be described first, and portions that differ in operation depending on the type of coffee will be described later.

[Coffee Supply Operation of Beverage Supply Device 100]
7 to 11 are operation explanatory views of the coffee supply operation in the beverage supply apparatus 100. FIG. Moreover, FIG. 12 is a figure for demonstrating operation | movement of the principal part in connection with coffee extraction of the drink supply apparatus 100. FIG. Below, the coffee supply operation | movement in the drink supply apparatus 100 is demonstrated with reference to these figures.

  First, before a series of coffee supply operations are started, the cylinder unit 31 (and the elevating unit 32) is in the standby position. The standby position is the position of the cylinder unit 31 after the piston position returning operation described later in the previous coffee supply operation is completed. At the standby position, as shown in “standby” in FIG. 12, the cap 37 is completely fitted in the cylinder 311. Hereinafter, the state in which the cylinder unit 31 is in the standby position is referred to as a standby state. In the standby state, the piston 312 of the cylinder unit 31 is located at the inner bottom portion of the cylinder 311. The control unit 50 stops the hot water pump 12, closes the hot water supply valve 23, the drain valve 26, and the extraction valve 28, and waits for a coffee extraction request operation via the touch panel 3.

(A) Coffee Bean Charging Operation When the user performs a coffee extraction request operation via the touch panel 3 in the standby state, the control unit 50 moves the motor as shown in “down” to “powder” in FIG. 34 is controlled to lower the cylinder unit 31 (cylinder 311 and piston 312) to a powder receiving state. As shown in “powder receiver” in FIGS. 7 and 12, in the powder receiver state, the cap 37 is completely separated from the upper surface of the cylinder 311, and the upper part of the cylinder 311 is opened so that the coffee bean powder can be charged. It has become.

  On the other hand, the control unit 50 pulverizes the coffee beans accommodated in the canister 13 with a blade portion (not shown) of the mill 14 in response to a coffee extraction request operation on the touch panel 3 by the user, thereby obtaining coffee bean powder.

  Here, the control unit 50 causes one of the two mills of the mill 14 to grind the coffee beans according to the type of coffee selected on the touch panel 3. Specifically, when the drip-flavored coffee is selected, the control unit 50 crushes the coffee beans in a drip-flavored coffee mill that can grind the coffee beans with a particle size suitable for the drip-flavored coffee. If selected, the coffee beans are ground into an espresso mill that can grind the coffee beans to a finer particle size than the drip flavor mill. The coffee beans crushed in the mill 14 are put into the cylinder 311 whose upper surface is opened as described above.

(B) Coffee Bean Compression Operation When such a coffee bean charging operation is completed, the control unit 50 executes a coffee bean compression operation. In this coffee bean compression operation, as shown in “tamping (compression)” in FIG. 12, the controller 50 rotates the motor 34 in the forward direction to raise the cylinder unit 31 (the cylinder 311 and the piston 312). As a result, the lower end of the cap 37 is pushed into the opening on the upper surface of the cylinder 311. The coffee bean powder charged into the cylinder 311 is sandwiched between the piston 312 located at the inner bottom and the cap 37, and is compressed. This compression of the coffee bean powder is called tamping. In the tamping operation, the control unit 50 closes the hot water supply valve 23 and the extraction valve 28 shown in FIG. 7 and opens the drain valve 26.

  In this coffee bean compression operation, the compression pressure is set differently when drip-flavored coffee is selected and when espresso is selected.

  Drip coffee is usually extracted without compressing the coffee bean powder. However, in the beverage supply apparatus 100 of the present embodiment, when extracting the drip-flavored coffee, the coffee bean powder is compressed at a suitable pressure that is smaller than when espresso is selected to perform a more suitable extraction. It is configured. The reason is as follows. The coffee bean powder introduced from the upper surface opening of the cylinder 311 is deposited on the upper surface of the piston 312 which is the inner bottom portion of the cylinder 311. Here, when no compression is performed, unevenness in the accumulation state of the coffee bean powder such as the thickness of the coffee bean powder in the cylinder 311 may occur. This unevenness causes the extraction efficiency to deteriorate when the coffee liquid is extracted in the coffee liquid extraction operation to be described later, and causes the coffee liquid to be smeared. By pressing the coffee bean powder at a suitable pressure as described above, such unevenness can be eliminated and the filling degree of the coffee beans in the cylinder 311 can be made uniform. As a result, it is possible to avoid the occurrence of gummy in the extracted coffee liquid.

  On the other hand, espresso presses coffee bean powder more strongly than in the case of drip-flavored coffee, and further pressurizes and supplies hot water in the coffee liquid extraction operation described later, so that the hot water penetrates into the coffee bean powder and is deep. A coffee liquid is obtained. For this reason, the coffee bean compression operation which pressurizes coffee bean powder becomes essential for the extraction of espresso.

  In the coffee bean compression operation described above, in order to change the compression pressure according to the type of coffee selected, for example, the motor 34 is generated by changing the amount of current supplied when the control unit 50 drives the motor 34. What is necessary is just to control the torque to perform. Specifically, for example, the motor 34 has a motor driver (not shown), and the generated torque of the motor 34 may be controlled by feedback-controlling the current value that the control unit 50 supplies to the motor driver. FIG. 13 is a diagram showing the relationship between the current value supplied to the motor 34 and the type of coffee. As shown in FIG. 13, for example, the current value at the time of drip-flavored coffee extraction is set to about 1/3 to 1/4 of the current value of espresso extraction.

(C) Coffee liquid extraction operation When the coffee bean compression operation ends, the control unit 50 executes the coffee liquid extraction operation. As shown in FIG. 8, in the coffee bean compression operation, when the cylinder 311 and the piston 312 are fitted, the hot water supply position detection sensor 42 detects that the cylinder unit has reached a position where hot water can be supplied. As shown in “Extraction” in FIGS. 8 and 12, the controller 50 closes the drain valve 26 and opens the hot water supply valve 23 to supply pressurized hot water from the hot water tank 11 into the cylinder 311. Here, the controller 50 detects the amount of hot water supplied by the flow sensor 22, and first supplies a small amount of hot water into the cylinder 311 to steam the coffee bean powder. When the steaming is completed, the control unit 50 supplies a predetermined amount, for example, a cup of hot water, into the cylinder 311 again. When the supply is completed, the hot water pump 12 is stopped and the hot water supply valve 23 is closed.

  In addition, the control part 50 changes the pressurization state of hot water while changing the flow rate of hot water according to the kind of selected coffee at the time of supply of hot water. By changing the pressurized state of hot water, the degree of penetration of hot water into the coffee bean powder changes during coffee extraction, affecting the strength of the coffee liquid. The change in the flow rate of hot water and the change in the pressurized state are realized by the control unit 50 controlling the hot water pump 12.

  Specifically, at the time of espresso extraction, the control unit 50 controls the hot water pump 12 to pressurize the cylinder 311 at a predetermined pressure (for example, about 5 to 9 atmospheres (0.5 MPa to 0.9 MPa)). As a result, the hot water supplied into the cylinder 311 is pressurized, the internal pressure of the cylinder 311 is increased, the hot water penetrates well into the coffee bean tissue, the extraction is performed at a high speed, and the coffee liquid (thick and less miscellaneous) Espresso) is extracted.

  On the other hand, at the time of drip-flavored coffee extraction, the control unit 50 controls the hot water pump 12 so as not to pressurize hot water more than at the time of espresso extraction. Specifically, the control unit 50 controls the hot water pump 12 so that the inside of the cylinder 311 becomes 1 atm to 1.5 atm (0.1 MPa to 0.15 MPa), for example.

  As described above, in the beverage supply device 100 of the present embodiment, coffee beans having a particle size corresponding to the type of coffee are compressed and filled in the cylinder 311 with a pressure corresponding to the type, and the pressure corresponding to the type is stored in the cylinder 311. Hot water is supplied to extract the coffee liquid. That is, the extraction method itself at the time of espresso extraction and drip flavor coffee extraction is the same, and only the pressure for compressing the coffee bean powder and the pressure in the cylinder 311 at the time of extraction are different. However, the drip-flavored coffee of the present embodiment extracted by such an extraction method is substantially the same in flavor as the drip-type coffee extracted using a dripper or a filter. It is supplied as “flavored coffee”.

  The control unit 50 opens the extraction valve 28 with the start of extraction. The extracted coffee liquid passes through the cap 37 from an extraction port 37A formed on the lower surface of the cap 37, and is discharged from the coffee nozzle 4 via the coffee liquid pipe 27 connected to the coffee liquid extraction portion 37B. The As a result, the coffee liquid is supplied to the beverage container placed below the coffee nozzle 4 on the beverage container support 7. At this time, a milk supply unit (not shown) supplies foamed milk or steamed milk from the milk nozzle 5 at the same time as the coffee liquid, so that a milk / coffee mixed beverage such as cafe au lait, cafe latte, cappuccino, etc. can be provided. May be.

(D) Coffee mash disposal operation When the coffee liquid extraction operation is completed, the beverage supply device 100 executes the coffee mash disposal operation. First, as shown in “residual pressure purge” in FIG. 12, the controller 50 maintains the hot water supply valve 23 closed, opens the drain valve 26 and closes the extraction valve 28. Then, the pressurized pressure in the cylinder 311 is released.

  When the inside of the cylinder 311 reaches a normal pressure, the control unit 50 reverses the motor 34 to lower the cylinder unit 31 as shown in “Suction” in FIGS. 9 and 12. At this time, the control unit 50 closes the hot water supply valve 23 and the drain valve 26 and opens the extraction valve 28. Then, since the volume of the space in the cylinder 311 increases as the cylinder unit 31 descends, the inside of the cylinder 311 becomes negative pressure, and the inside of the pipe from the extraction port 37A to the coffee liquid extraction part 37B and the inside of the coffee liquid pipe 27 The remaining coffee liquid can be sucked into the cylinder 311. In “suction” in FIG. 12, the sucked coffee liquid is shown as a residual liquid.

  When the control unit 50 further lowers the cylinder unit 31, the lower end portion of the piston 312 located at the lowermost end of the cylinder unit 31 comes into contact with the lower surface portion 36 </ b> B of the frame portion 36 as shown in FIG. 9. When the control unit 50 continues the lowering operation, the lower end portion of the piston 312 is pressed against the lower surface portion 36B, and the piston 312 configured to move up and down in the cylinder 311 moves in the cylinder 311. To rise.

  As a result, the coffee cake remaining in the cylinder 311 rises while being collected by the upper surface of the piston 312. When the cylinder unit 31 is further lowered to the lower limit position, the lower limit position detection sensor 44 detects the position. In response to detection by the lower limit position detection sensor 44, the control unit 50 stops driving the motor 34 and stops the lowering of the cylinder unit 31. In this state, as shown in “separation” in FIG. 12, the coffee grounds collected on the upper surface of the piston 312 are pushed up to the outside of the cylinder 311 so as to be positioned above the edge of the upper surface opening of the cylinder 311. Become.

  Here, since the hot water supply valve 23 and the drain valve 26 are closed as described above, when the piston 312 moves up in the cylinder 311, a negative pressure is generated between the upper end portion of the piston 312 and the inner bottom portion of the cylinder 311. Become. Since the piston 312 has water permeability as described above, the moisture contained in the coffee grinder collected on the upper surface of the piston 312 is drawn into the cylinder 311 through the piston 312. In “separation” in FIG. 12, the drawn water is shown as a residual liquid. As a result, the moisture contained in the coffee cake can be reduced, and in the subsequent coffee cake removal operation, the coffee cake containing moisture sticks to the upper surface of the piston 312 and cannot be removed sufficiently. This can be eliminated, and the coffee mash can be suitably removed.

  When the cylinder unit 31 descends to the lower limit position, the control unit 50 next causes the motor 34 to rotate forward and raise the cylinder unit 31 again as shown in FIG. When the cylinder unit 31 reaches a predetermined height, the wiper 38 operates in conjunction with the rising of the cylinder unit 31. As described above, the wiper 38 is positioned slightly above the upper end of the cylinder 311, and when the wiper 38 performs a wiping operation, the coffee cake pushed up to the outside of the cylinder 311 by the piston 312 is removed by the wiper 38. To be removed. Here, the removed coffee cake is received in the coffee cake receiving portion 15 described above.

(E) Piston position return operation After the coffee grinder is discarded, the control unit 50 continues to raise the cylinder unit 31 and execute the piston position return operation as shown in FIG. In the piston position returning operation, the control unit 50 causes the motor 34 to rotate forward until the upper limit position detection sensor 41 detects that the cylinder unit 31 is at the upper limit position. As shown in FIG. 11, detecting that the cylinder unit 31 is in the upper limit position means that the cap 37 is inserted to the innermost part of the cylinder 311. At that time, the piston 312 pushed up to the uppermost part of the cylinder 311 in the above-described coffee grounds discarding operation comes into contact with the lower surface of the cap 37, and is further pushed down to the inner bottom part of the cylinder 311 by raising the cylinder unit 31. .

  In this process, the control unit 50 opens the drain valve 26 as shown in “Waste liquid” in FIG. As a result, the water sucked into the space between the inner bottom portion of the cylinder 311 and the piston 312 in the coffee bowl discarding operation is smoothly discharged from the drain pipe 25 to the outside via the drain valve 26.

  When the control unit 50 is in a state where the position of the piston 312 is pushed down to the inner bottom portion of the cylinder 311, that is, in the above-described standby state (see “standby” in FIG. 12), 23, the drain valve 26, and the extraction valve 28 are all closed, and then waits until a coffee extraction operation is accepted.

  The coffee supply operation of the beverage supply device 100 according to the embodiment of the present invention has been described above.

  As described above, according to the beverage supply device 100 of the present embodiment, in the coffee supply operation, the control unit 50 is crushed coffee with a particle size corresponding to the type of coffee selected by the selection operation on the touch panel 3. A coffee bean charging operation for charging the bean powder into the cylinder 311, a compression operation for inserting the cap 37 into the cylinder 311, and compressing the coffee bean powder with a different pressure depending on the type of coffee selected in the selection operation, and a selection operation The coffee liquid extraction operation of supplying hot water to the cylinder by the hot water pump and extracting the coffee liquid at different supply speeds depending on the selected coffee type is sequentially executed.

  Thereby, for example, when espresso is selected, the coffee bean powder is compressed at a predetermined pressure in the cylinder 311 and the hot water is supplied into the cylinder 311 at a relatively high speed to extract the espresso. . In addition, when coffee with a drip flavor is selected, the coffee bean powder is compressed with a pressure lower than that in the case of espresso, so that the coffee bean powder can be uniformly filled in the cylinder 311, resulting in unevenness. It is possible to prevent aggravation and deterioration of extraction efficiency.

  The above-described embodiment is an example of the present invention, and the present invention is not limited to this. In embodiment mentioned above, it had two or more mills which grind | pulverize coffee beans to a different particle size, respectively, and used different mills according to the kind of coffee selected. However, for example, the beverage supply device of the present invention may adjust the particle size at which one mill 14 grinds coffee beans to at least two or more stages according to the type of coffee selected by the touch panel 3.

  The disclosures of the specification, drawings, and abstract included in the Japanese application of Japanese Patent Application No. 2015-029662 filed on Feb. 18, 2015 are all incorporated herein by reference.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a beverage supply apparatus that introduces hot water into a container in which coffee bean powder is charged and extracts coffee liquid.

DESCRIPTION OF SYMBOLS 100 Beverage supply apparatus 1 Case 2 Front door 3 Touch panel 4 Coffee nozzle 5 Milk nozzle 6 Hot water nozzle 7 Beverage container support 10 Beverage supply mechanism 11 Hot water tank 12 Hot water pump 13 Canister 14 Mill 15 Coffee cup receiving part 21 Hot water Filter 22 Flow rate sensor 23 Hot water supply valve 24 Hot water supply pipe 24A Connector 25 Drain pipe 26 Drain valve 27 Coffee liquid pipe 28 Extraction valve 29 Current divider 30 Coffee extraction part 31 Cylinder unit 311 Cylinder 312 Piston 313 Hot water supply port 32 Elevating part 33 Elevating shaft 34 Motor 35 Pulley 36 Frame portion 36A Upper surface portion 36B Lower surface portion 36C Column portion 37 Cap 37A Extraction port 37B Coffee liquid extraction portion 38 Wiper 41 Upper limit position detection sensor 42 Hot water supply position detection sensor 43 Coffee bean charging position detection sensor 44 Lower limit position detection sensor 50 Control unit

Claims (5)

An operation unit for receiving a selection operation for selecting one of a plurality of types of coffee;
A cylinder containing coffee bean powder;
A cap for closing the opening of the cylinder;
A hot water pump for supplying hot water to the cylinder;
A control unit for controlling the operation of inserting the cap into the cylinder so as to compress the coffee bean powder at a different pressure depending on the type of coffee selected in the selection operation;
Beverage supply apparatus having. And further comprising a mill for crushing coffee beans to produce coffee bean powder,
The said control part controls the said mill so that coffee beans may be grind | pulverized with the particle size according to the kind of coffee selected by the said selection operation before the control which compresses the said coffee bean powder. Beverage supply device. The said control part controls the said hot water pump so that hot water may be poured into the said cylinder with the supply speed which changes with types of coffee selected by the said selection operation after the control which compresses the said coffee bean powder. The beverage supply apparatus described. The plurality of types of coffee include a pressure extraction type coffee and a low pressure extraction type coffee that is extracted at a lower pressure than the pressure extraction type coffee to reproduce the flavor of drip coffee. The beverage supply apparatus according to claim 1. When the low pressure extraction type coffee is selected by the selection operation, the control unit selects the coffee bean powder in the compression operation than when the pressure extraction type coffee is selected by the selection operation. The beverage supply device according to claim 4, wherein the beverage is compressed with a small pressure.

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