WO2016116981A1 - 飲料供給装置 - Google Patents
飲料供給装置 Download PDFInfo
- Publication number
- WO2016116981A1 WO2016116981A1 PCT/JP2015/006187 JP2015006187W WO2016116981A1 WO 2016116981 A1 WO2016116981 A1 WO 2016116981A1 JP 2015006187 W JP2015006187 W JP 2015006187W WO 2016116981 A1 WO2016116981 A1 WO 2016116981A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coffee
- cylinder
- hot water
- extraction
- coffee liquid
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
- A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
- A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
- A47J31/469—Details of hydraulic circuits
Definitions
- the present invention relates to a beverage supply device that pressurizes and supplies hot water to coffee raw material powder to extract coffee liquid.
- Patent Document 1 discloses an extraction unit that can make both an American coffee drink and an espresso coffee drink.
- the conventional beverage supply apparatus including Patent Document 1 generally includes an extraction chamber that stores, for example, ground coffee beans, and a lid that seals the extraction chamber. Then, the extraction chamber or the lid is driven by a driving device such as a motor so that the inside of the extraction chamber can be pressurized.
- a hot water supply pipe for supplying hot water to the extraction chamber
- an extraction pipe for providing the extracted coffee liquid to the user
- a drain pipe for draining the waste liquid after extraction.
- Each pipe connected to the extraction chamber is provided with a valve.
- ground coffee beans are stored in the extraction chamber and sealed with a lid. And hot water is introduced from the hot water supply pipe. At this time, the valve of the drain pipe is closed, and the coffee liquid extracted in the extraction chamber is provided to the beverage container outside from the extraction pipe.
- the beverage supply device is generally configured to include a flow rate sensor in the hot water supply pipe, and to stop the hot water supply when there is an abnormality in the flow rate.
- An object of the present invention is to provide a beverage supply device that can cope with an extraction tube that is clogged during extraction before it becomes uncontrollable.
- the beverage supply apparatus of the present invention includes a cylinder for storing coffee bean powder, a hot water pump for supplying hot water into the cylinder, a coffee liquid pipe for delivering coffee liquid extracted by the cylinder, and the cylinder A drain valve for discharging the residual liquid in the interior, and when clogging of the coffee liquid pipe is detected during the extraction of the coffee liquid, the hot water pump stops supplying the hot water and the drain valve is opened.
- a control unit for storing coffee bean powder, a hot water pump for supplying hot water into the cylinder, a coffee liquid pipe for delivering coffee liquid extracted by the cylinder, and the cylinder
- a drain valve for discharging the residual liquid in the interior, and when clogging of the coffee liquid pipe is detected during the extraction of the coffee liquid, the hot water pump stops supplying the hot water and the drain valve is opened.
- 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.
- FIG. 1 is a perspective view of a beverage supply apparatus 100 according to an embodiment of the present invention.
- 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 base 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 receiving 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 coffee nozzle 4 is a nozzle for providing the 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 are configured so as to be able to supply a coffee / milk mixed drink such as cafe latte or cappuccino by mixing coffee and milk in a beverage container.
- 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.
- FIG. 2 is a perspective view of the beverage supply mechanism 10
- FIG. 3 is a side view of the beverage supply mechanism 10.
- 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 that can store several liters of hot water, and a heater (not shown) that heats and holds the stored drinking water at, for example, 97 ° C. is provided therein.
- 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 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 lower portion of the canister 13, and coffee beans are supplied from the 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 coffee beans (ground beans) 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 bowl receiving unit 15 stores the residue of ground beans used for the extraction of the coffee liquid by the coffee extraction unit 30.
- the coffee bowl receiving portion 15 is configured to be able to be pulled forward with the front door 2 opened, and can remove the stored coffee bowl.
- FIG. 4 is a view showing the flow of hot water in the beverage supply mechanism 10.
- 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.
- a connector 24 ⁇ / b> A 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 which 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.
- 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 flow divider 29 is provided with a pressure sensor 291 for monitoring the pressure in a cylinder 311 (see FIG. 5 and the like to be described later) to which a hot water supply pipe is connected.
- the pressure sensor 291 may be disposed at any position as long as the pressure in the cylinder 311 can be monitored.
- the pressure sensor 291 may be disposed on the hot water supply pipe 24 from the hot water supply valve 23 to the hot water supply port 313 of the cylinder unit 31 via the flow divider 29. It may be arranged at a predetermined position or a predetermined position in the cylinder 311.
- 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 sensor 22 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 the discharge of the residual liquid in the coffee extraction part 30 and the 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.
- 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 ground beans 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 top 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. .
- a mesh filter for brewing coffee liquid is disposed on the upper surface of the piston 312, for example.
- the elevating unit 32 holds the above-described cylinder unit 31 and moves up and down together with the cylinder unit 31.
- the elevating shaft 33 is a shaft portion that supports the elevating unit 32, and the elevating unit 32 moves up and down along the elevating shaft 33.
- the motor 34 is a drive unit that rotationally drives the elevating shaft 33.
- the motor 34 is a motor with an electromagnetic brake, for example.
- the motor 34 of the present embodiment it is preferable to use a brushless motor.
- the motor 34 which is a brushless motor, has a rotor position detection sensor (Hall element) 341 (see FIG. 6 described later) that detects the position of the rotor (rotor), and rotation of the motor generated by the rotor position detection sensor 341.
- a pulse signal having a frequency proportional to the number (FG (Frequency ⁇ Generator) signal: an example of the operation signal of the present invention) is output.
- FG Frequency ⁇ Generator
- the pulley 35 is connected to the upper end 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.
- the frame portion 36 includes an upper surface portion 36 ⁇ / b> A, a lower surface portion 36 ⁇ / b> B, and at least one pillar portion 36 ⁇ / b> C that connects them.
- 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.
- 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.
- 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.
- the coffee beans ground by the mill 14 described above 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.
- 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.
- the position detection sensor includes an upper limit position detection sensor 41, a hot water supply position detection sensor 42, a coffee bean input 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) including, 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 elevating unit 32.
- the upper limit position detection sensor 41 is a sensor that detects the upper limit position of the cylinder unit 31.
- the hot water pouring position detection sensor 42 is a sensor for detecting the position of the cylinder unit 31 for pouring hot water into the cylinder 311.
- the coffee bean input position detection sensor 43 is a sensor for detecting the position of the cylinder unit 31 for supplying ground coffee beans to 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 at 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 unit 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.
- FIG. 6 is a functional block diagram showing each functional unit of the beverage supply device 100.
- the control unit 50 is configured by a general-purpose microcontroller, for example.
- the touch panel 3 On the input side of the control unit 50, the touch panel 3, the flow sensor 22, the pressure sensor 291, the rotor position detection sensor 341, the upper limit position detection sensor 41, the hot water supply position detection sensor 42, the coffee bean input position detection sensor 43, and the lower limit position detection A sensor 44 or the like is 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 controlling on the output side based on the information input from the input side.
- FIG. 7 to 11 are explanatory diagrams of the coffee supply operation in the beverage supply apparatus 100.
- FIG. 12 is a figure for demonstrating operation
- movement in the drink supply apparatus 100 is demonstrated with reference to these figures.
- 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.
- the cap 37 is completely fitted in the cylinder 311.
- the state in which the cylinder unit 31 is in the standby position is referred to as a 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 elevating part 32 and to be in a powder receiving state. 7 and 12, in the powder receiving 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 ground beans (powder) can be charged. It is like that.
- the control unit 50 drives the blade portion (not shown) of the mill 14 to grind the coffee beans stored in the canister 13 to obtain ground beans.
- the coffee beans ground in the mill 14 are put into a cylinder 311 having an open top.
- (B) Coffee liquid extraction operation When such a coffee bean charging operation is completed, the control unit 50 next executes a coffee liquid extraction operation.
- the coffee liquid extraction operation first, as shown in “tamping (compression)” of FIGS. 8 and 12, the control unit 50 rotates the motor 34 in the normal 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 ground beans thrown into the cylinder 311 are sandwiched between the piston 312 located at the inner bottom and the cap 37 and are compressed. This compaction of ground beans 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. 6 and opens the drain valve 26.
- the hot water pouring position detection sensor 42 detects that the cylinder unit 31 has reached a position where hot water can be poured.
- the control unit 50 operates the hot water pump 12 to pressurize the hot water and closes the drain valve 26 and opens the hot water supply valve 23 as shown in “Extraction” in FIGS. Pressurized hot water is supplied from the tank 11 into the cylinder 311.
- the control unit 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 ground beans.
- the control unit 50 supplies a predetermined amount of hot water, for example, a cup of coffee, into the cylinder 311 again.
- the hot water pump 12 is stopped and the hot water supply valve 23 is closed.
- the pressurized hot water is introduced into the cylinder 311 sealed by the cap 37, so that the pressure in the cylinder 311 rises and the hot water penetrates into the ground bean structure.
- a strong coffee liquor that is, espresso is obtained.
- 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 coffee liquid is supplied to the beverage container placed below the coffee nozzle 4 on the beverage container support 7.
- a milk / coffee mixed beverage may be provided by a milk supply unit (not shown) supplying foamed milk or steamed milk from the milk nozzle 5 simultaneously with the coffee liquid.
- (C) 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 pressure in the cylinder 311 reaches a normal pressure, the control unit 50 reverses the motor 34 to lower the cylinder unit 31 (the cylinder 311 and the piston 312) as shown in “Suction” in FIGS. 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.
- the coffee mash remaining in the cylinder 311 rises while being collected by the upper surface of the piston 312.
- the lower limit position detection sensor 44 detects the position.
- the control unit 50 stops driving the motor 34 and stops the elevating unit 32 from descending.
- 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.
- the control unit 50 next causes the motor 34 to rotate forward and raise the cylinder unit 31 again as shown in FIG.
- the wiper 38 operates in conjunction with the raising / lowering operation of the cylinder unit 31.
- 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.
- the removed coffee cake is received in the coffee cake receiving portion 15 described above.
- control unit 50 opens the drain valve 26 as shown in “Waste liquid” in FIG.
- 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.
- the control unit 50 stops the rotation of the motor 34 and hot water supply valve 23, drain valve 26, and extraction valve 28. All the valves are closed, and then wait until the coffee extraction operation is accepted.
- the coffee supply operation of the beverage supply device 100 has been described above.
- the coffee supply operation described above assumes a case where each unit operates suitably and without delay.
- any one of paths hereinafter referred to as coffee liquid supply paths
- coffee liquid supply paths any one of paths from the coffee liquid extraction portion 37B of the piston 312 to the coffee nozzle 4 via the coffee liquid pipe 27 is described.
- the operation of the beverage supply apparatus 100 in such a case will be described in detail below.
- the control unit 50 monitors the flow rate of hot water flowing through the hot water supply pipe 24 by the flow rate sensor 22.
- the controller 50 detects an abnormality such as the hot water flow being stopped with the hot water supply valve 23 opened, or a state where the flow rate is lower than the flow rate during normal coffee liquid extraction operation for a predetermined time or longer, The hot water supply valve 23 is closed and the hot water pump 12 is stopped.
- control unit 50 monitors the pressure sensor 291 during the coffee liquid extraction operation. When the pressure in the cylinder 311 detected by the pressure sensor 291 exceeds a predetermined threshold value higher than the normal coffee liquid extraction operation and the state continues for a predetermined time or longer, the control unit 50 closes the hot water supply valve 23. Stop the hot water pump 12.
- control unit 50 monitors the FG signal output from the rotor position detection sensor 341 of the motor 34. Since the FG signal is a signal output from the rotor position detection sensor 341 as the motor 34 rotates, the FG signal should not be detected during the coffee extraction operation in which the motor 34 is stopped so as not to raise or lower the elevating unit 32. It is. That is, if the controller 50 detects the FG signal during the coffee extraction operation, it means that the motor 34 has started to reverse due to the pressure in the cylinder 311.
- control unit 50 detects the FG signal while the motor 34 is stopped, the control unit 50 determines that an abnormality, that is, clogging of the coffee liquid supply path has been detected, closes the hot water supply valve 23, and turns the hot water pump 12 on. stop.
- the control unit 50 monitors the hot water supply amount by the flow rate sensor 22, the pressure in the cylinder 311 by the pressure sensor 291, and the FG signal output from the rotor position detection sensor 341 during the coffee liquid extraction operation. Monitor.
- the beverage supply apparatus 100 can suitably detect the occurrence of clogging of the coffee liquid supply path during the coffee liquid extraction operation.
- the hot water supply amount, the pressure in the cylinder 311 and the FG signal are simultaneously monitored. However, for example, only one of them is monitored to detect an abnormality. May be.
- the drink supply apparatus 100 performs the following operation
- FIG. 13 is a diagram for explaining the operation of the main part of the beverage supply device 100 when clogging occurs in the coffee liquid supply path in the coffee liquid extraction operation. As shown in “drainage” in FIG. 13, for example, when the FG signal is detected while the motor 34 is stopped at the time of “extraction”, the beverage supply device 100 executes the drainage operation.
- the extraction valve 28 is open.
- the coffee liquid supply path is clogged, so that the inside of the cylinder 311 is sealed. Therefore, a large force is required for lowering the elevating unit 32.
- the drain valve 26 may be opened and the inside of the cylinder 311 may be set to the same pressure as the outside.
- the cylinder 311 that stores the coffee bean powder
- the hot water pump 12 that pressurizes hot water into the cylinder 311, and the cylinder 311.
- the control part 50 which stops the pressurization supply of the hot water by the hot water pump 12, and makes the drain valve 26 open is provided.
- the cap 37 that closes the opening of the cylinder 311 and the motor 34 that moves the cylinder 311 so that the cap 37 closes the opening are further provided.
- the controller 50 detects clogging of the coffee liquid pipe 27 based on a signal indicating the rotation of the motor 34 when the coffee liquid is extracted. As a result, the pressure in the cylinder 311 becomes larger than the brake pressure of the motor 34, and the cylinder 311 moves in the direction of expanding the volume, so that the pressure in the cylinder 311 decreases and hot water supply continues. Can be prevented.
- the pressure sensor 291 that detects the internal pressure of the cylinder 311 is further provided, and the control unit 50 detects the internal pressure detected by the pressure sensor 291 when the coffee liquid is extracted. Based on the above, the clogging of the coffee liquid pipe 27 is detected. Thereby, the beverage supply apparatus 100 can detect clogging of the coffee liquid supply path based on the pressure abnormality in the cylinder 311.
- the beverage supply device 100 further includes the flow sensor 22 that detects the flow rate of hot water supplied into the cylinder 311, and the control unit 50 performs the flow sensor when extracting coffee liquid.
- the clogging of the coffee liquid pipe 27 is detected on the basis of the flow rate detected by 22.
- the beverage supply apparatus 100 can detect clogging of the coffee liquid supply path based on an abnormality in the hot water supply amount.
- the controller 3 further includes a water-permeable piston 312 that moves in the cylinder 311 and accumulates the coffee grounds after the extraction of the coffee liquid in the upper part.
- the speed 50 moves the cylinder 311 with respect to the piston 312 having the coffee grinder accumulated on the upper side than when the clogging of the coffee liquid pipe 27 is not detected.
- the elevating unit 32 is lowered for a long time in the coffee bowl discarding operation.
- the beverage supply device 100 compresses coffee beans and pressurizes hot water to produce a dark coffee liquid, that is, espresso.
- the present invention can also be applied to a beverage supply device that pressurizes hot water at a low pressure to supply drip-flavored coffee.
- the present invention can also be applied to a beverage supply apparatus that can produce a plurality of types of coffee beverages such as drip-flavored coffee, American coffee, and high-pressure extraction espresso by controlling the pressurization of the hot water with a hot water pump.
- the present invention is suitable for a beverage supply apparatus that introduces hot water into a container charged with coffee bean powder and extracts coffee liquid.
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Abstract
Description
まず、飲料供給装置100の外部構造について説明する。図1は、本発明の実施の形態に係る飲料供給装置100の斜視図である。
次に、飲料供給機構10について説明する。
次に、図5を参照してコーヒー抽出部30について説明する。図5はコーヒー抽出部30の斜視図である。コーヒー抽出部30は、ミル14から供給される挽き豆に湯を通してコーヒー液を抽出するものである。
次に、飲料供給装置100の制御部50について説明する。図6は、飲料供給装置100の各機能部を示す機能ブロック図である。制御部50は、例えば汎用のマイクロコントローラにより構成される。
図7~図11は飲料供給装置100におけるコーヒー供給動作の動作説明図である。また図12は、飲料供給装置100のコーヒー抽出に関わる主要部分の動作を説明するための図である。以下では、これらの図を参照して飲料供給装置100におけるコーヒー供給動作について説明する。
上記待機状態において利用者によりタッチパネル3を介してコーヒーの抽出要求操作がなされると、図12の「下降」から「粉受け」に示すように、制御部50はモータ34を制御して昇降部32を降下させ、粉受け状態とする。図7および図12の「粉受け」に示すように、当該粉受け状態では、シリンダ311の上面からキャップ37が完全に離間し、シリンダ311の上部が開口して挽き豆(粉)を投入できるようになっている。
このようなコーヒー豆投入動作が終了すると、制御部50は、次にコーヒー液抽出動作を実行する。コーヒー液抽出動作では、まず、図8および図12の「タンピング(圧縮)」に示すように、制御部50はモータ34を正転させてシリンダユニット31(シリンダ311およびピストン312)を上昇させる。これにより、シリンダ311の上面の開口部内にキャップ37の下端が押し込まれていく。シリンダ311内に投入された挽き豆は、内底部に位置するピストン312と、キャップ37により挟まれて閉じこめられ、圧縮される。この挽き豆の圧縮はタンピングと称される。タンピング動作において、制御部50は図6に示す給湯弁23と抽出弁28を閉じ、排水弁26を開く。
上記コーヒー液抽出動作が終了すると、飲料供給装置100はコーヒー滓廃棄動作を実行する。まず、図12の「残圧パージ」に示すように、制御部50は、給湯弁23が閉じた状態を維持し、排水弁26を開くとともに抽出弁28を閉じる。すると、加圧されていたシリンダ311内の圧力が抜ける。シリンダ311内が通常の圧力になると、図9および図12の「吸込み」に示すように、制御部50はモータ34を逆転させてシリンダユニット31(シリンダ311およびピストン312)を降下させる。このとき、制御部50は給湯弁23および排水弁26を閉じ、抽出弁28を開く。すると、シリンダユニット31の下降に伴ってシリンダ311内の空間の容積が増大するため、シリンダ311内が負圧となり、抽出口37Aからコーヒー液取出部37Bまでの配管内、およびコーヒー液配管27内に残っていたコーヒー液をシリンダ311内に吸い込むことができる。
コーヒー滓が廃棄された後、制御部50は、引き続き昇降部32を上昇させてピストン位置戻し動作を実行する。ピストン位置戻し動作では、制御部50は、図11に示すように上限位置検出センサ41によってシリンダユニット31が上限位置であると検出されるまでモータ34を正転させる。シリンダユニット31が上限位置であると検出されることは、キャップ37がシリンダ311の最奥部まで嵌入されたことを意味する。その際、上述したコーヒー滓廃棄動作においてシリンダ311の最上部にまで押し上げられたピストン312は、キャップ37の下面に当接し、さらにシリンダユニット31が上昇することでシリンダ311の内底部にまで押し下げられる。
図12の「抽出」に示すように、コーヒー液抽出動作時には排水弁26は閉じた状態となっている。このため、コーヒー液供給路が詰まると、給湯配管24から湯が供給され続けるにもかかわらず排水管25およびコーヒー液配管27におけるコーヒー液の通過ができないため、シリンダ311内の圧力が上昇する。これにより、コーヒー液がシリンダ311とキャップ37のシール部から漏れ出してしまう事態が生じうる。
上述したようにコーヒー液供給路の詰まりが検知されると、飲料供給装置100はコーヒー液を正常に供給することができなくなるため、例えば管理者等のメンテナンスを受けるまで待機する必要がある。このため、飲料供給装置100は例えば図示しない報知部等により詰まりが発生した旨の報知を行う。
コーヒー液抽出動作においてコーヒー液供給路に詰まりが発生したとき、シリンダ311内は抽出中のコーヒー液で満たされ、圧力が高い状態となっている。このため、図13の「排水」に示すように、制御部50は給湯弁23を閉じて排水弁26を開き、シリンダ311内のコーヒー液を外部に排出し、シリンダ311内の圧力を下げる。
上述した排水動作が終了すると、シリンダ311内には水分を含むコーヒー滓が残された状態となる。このため、飲料供給装置100はコーヒー滓廃棄動作を実行する。ただし、上述した排水動作において排水弁26を開放することでシリンダ311内の圧力は既に抜けている。このため、飲料供給装置100は、図13に示すように、図12に示した「吸込み」から「廃液」までのコーヒー滓廃棄動作と同様の動作を行うことでコーヒー滓の除去と残り液の排水とを行う。
1 筐体
2 前面扉
3 タッチパネル
4 コーヒー用ノズル
5 ミルク用ノズル
6 湯用ノズル
7 飲料容器支持台
10 飲料供給機構
11 湯タンク
12 湯ポンプ
13 キャニスタ
14 ミル
15 コーヒー滓受け部
21 湯フィルタ
22 流量センサ
23 給湯弁
24 給湯配管
24A コネクタ
25 排水管
26 排水弁
27 コーヒー液配管
28 抽出弁
29 分流器
291 圧力センサ
30 コーヒー抽出部
31 シリンダユニット
311 シリンダ
312 ピストン
313 給湯口
32 昇降部
33 昇降軸
34 モータ
341 ロータ位置検出センサ
35 プーリ
36 枠部
36A 上面部
36B 下面部
36C 柱部
37 キャップ
37A 抽出口
37B コーヒー液取出部
38 ワイパー
41 上限位置検出センサ
42 湯投入位置検出センサ
43 コーヒー豆投入位置検出センサ
44 下限位置検出センサ
50 制御部
Claims (5)
- コーヒー豆粉末を収容するシリンダと、
前記シリンダ内に湯を加圧供給する湯ポンプと、
前記シリンダにて抽出されたコーヒー液を送出するコーヒー液配管と、
前記シリンダ内の残液を排出する排水弁と、
前記コーヒー液の抽出時に前記コーヒー液配管の詰まりを検出した場合に、前記湯ポンプによる前記湯の加圧供給を停止させるとともに、前記排水弁を開状態とする制御部と、
を備える飲料供給装置。 - 前記シリンダが有する開口を閉塞するキャップと、
前記キャップが前記開口を閉塞するように前記シリンダを移動させるモータと、をさらに備え、
前記制御部は、前記コーヒー液の抽出時に、前記モータの回転を示す信号に基づいて前記コーヒー液配管の詰まりを検出する、
請求項1に記載の飲料供給装置。 - 前記シリンダの内圧を検出する圧力センサをさらに備え、
前記制御部は、前記コーヒー液の抽出時に、前記圧力センサにより検出された内圧に基づいて前記コーヒー液配管の詰まりを検出する、
請求項2に記載の飲料供給装置。 - 前記シリンダ内に供給される湯の流量を検出する流量センサをさらに備え、
前記制御部は、前記コーヒー液の抽出時に、前記流量センサにより検出された流量に基づいて前記コーヒー液配管の詰まりを検出する、
請求項2に記載の飲料供給装置。 - 前記シリンダ内を移動するとともに、前記コーヒー液の抽出後のコーヒー滓を上部に蓄積する、通水性のピストンをさらに備え、
前記制御部は、前記コーヒー液配管の詰まりを検出しない場合よりも、前記コーヒー液配管の詰まりを検出した場合に、前記コーヒー滓を上部に蓄積したピストンに対して前記シリンダを移動させる速度を遅くする、
請求項2に記載の飲料供給装置。
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AU2015379238A AU2015379238B2 (en) | 2015-01-20 | 2015-12-11 | Beverage supply device |
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JP (3) | JP6655836B2 (ja) |
CN (2) | CN110537842B (ja) |
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