JP4197837B2 - Coffee beverage production equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for manufacturing a coffee beverage, and more particularly to an apparatus for manufacturing a coffee beverage that prevents poor coffee extraction and variation in taste based on individual differences in coffee beans.
[0002]
[Prior art]
Conventionally, as an apparatus for producing a coffee beverage provided with a measuring device for measuring ground beans obtained by grinding coffee beans to a predetermined particle size, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 57-110216.
[0003]
This coffee beverage manufacturing apparatus is provided inside a weighing chamber to which ground beans are supplied, has a disk-shaped rotating member provided with blades at predetermined intervals in the circumferential direction, and a required amount of coffee beans is removed from the coffee mill. The ground beans formed by pulverizing and feeding are fed to the peripheral wall of the measuring chamber and the space formed by the two blades and weighed. It is supplied to the coffee extractor based on the rotation.
[0004]
[Problems to be solved by the invention]
However, according to the conventional coffee beverage manufacturing apparatus, a certain amount of ground beans is measured based on the area of the space formed by the peripheral wall of the measuring chamber and between the two blades. The amount of ground beans cannot be adjusted based on fluctuations in extraction conditions accompanying environmental changes such as the type of coffee beverage, temperature, and humidity. In addition, if the weighing accuracy of coffee beans put into the coffee mill is low, the weighing accuracy of ground beans supplied to the coffee extractor will also be low, so it will not be possible to supply coffee beverages of stable quality and extracted state, and extraction conditions In the coffee extractor having a small adjustment range, there is a problem that defects such as poor extraction occur.
[0005]
Accordingly, an object of the present invention is to produce a coffee beverage that can set the amount of coffee beans used without causing poor extraction even in a coffee extractor that has excellent coffee bean weighing accuracy and a small adjustment range of extraction conditions. To provide an apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention produces a coffee beverage that supplies a coffee beverage by pulverizing coffee beans supplied from a coffee bean container with a coffee mill and supplying them to a coffee extractor as ground beans for extraction. In the apparatus, there is provided a weighing unit for weighing the coffee beans based on a volume corresponding to the weight, and a coffee bean weighing unit for supplying the measured coffee beans to the coffee mill, and the coffee beans from the coffee bean storage unit. has a feed-out member that feeds out the beans have a bean supplying means for supplying the coffee beans to the metering unit on the basis of the feeding operation of the feeding member, wherein the coffee bean metering means, the coffee beans accommodated by said feed member A weighing chamber for receiving the coffee beans sent out from the unit, and a movably provided inside the weighing chamber, In synchronism with the top plate for setting the product, the door provided at the lower part of the weighing chamber with the one end portion as a pivot, and the direction in which the top plate and the door are moved toward and away from each other. The weighing unit includes: a slider provided to operate; a drive motor that generates a driving force for driving the slider; and a sensor that detects an origin position of the slider when the volume is set. A coffee beverage production apparatus is provided.
[0007]
According to the coffee beverage manufacturing apparatus described above, the coffee beans fed from the coffee bean container are filled in the weighing chamber based on the feeding operation of the feeding member, and are weighed based on the volume (bulk). For example, when changing the amount of coffee beans used based on the extraction conditions, the volume of the weighing chamber is set based on the ratio of the weight of the coffee beans weighed with respect to the reference volume of the weighing chamber and the newly set weight of the coffee beans. Change and weigh the coffee beans in the new weighing chamber. By doing in this way, a certain amount of coffee beans can be accurately measured.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a coffee beverage production apparatus of the present invention will be described in detail with reference to the drawings.
[0009]
FIG. 1 shows a coffee beverage production apparatus according to an embodiment of the present invention. A cistern 2 connected to a water intake pipe 1, a float switch 2A that outputs a water level lowering signal of the cistern 2, and a water intake pipe 1 are provided. The water intake valve 1A, the hot water tank 10 for storing hot water heated from drinking water supplied from the cistern 2 through the pipe 3A, the electromagnetic valve 20 provided in the pipe 3A, and the outer periphery of the hot water tank 10 are fixed. A pump 60 for supplying hot water under pressure, a bypass pipe 60A connected to the pump 60 and the hot water tank 10, a valve 60B for returning hot water in the pump 60 to the hot water tank 10 by opening the bypass pipe 60A, and coffee A coffee bean container 40 for storing beans, and a coffee bean meter (coffee bean meter) that measures coffee beans delivered from the coffee bean container 40 based on volume. 50), a coffee bean auger (bean supply means) 43 that is provided at the lower part of the coffee bean container 40 and feeds the coffee beans by rotating, and a rotation shaft 43A of the coffee bean auger 43 via a speed reducer 45. An auger drive motor 44 that transmits rotational torque, a coffee mill 80 that pulverizes coffee beans supplied from the coffee bean meter 50 via the bean chute 80A to a predetermined particle size, and the pulverized ground beans are dropped downward. A coffee extractor 30 for extracting ground beans supplied through the ground bean outlet 80B and the ground bean chute 81 with hot water to produce a coffee beverage, and a coffee beverage extracted by the coffee extractor 30 to the cup 9 A beverage supply pipe 30A to be supplied, a pipe 6A for supplying hot water from the pump 60 to the coffee extractor 30, and a pressure in the pipe provided in the pipe 6A. A pressure sensor 25 that outputs a closed pressure signal, a flow rate sensor 19 that is provided in the pipe 6A and outputs a flow rate signal corresponding to the flow rate of hot water, and a pipe 6A that prevents backflow of hot water upstream. A check valve 21, a pipe 6 </ b> B branched from the pipe 6 </ b> A on the upstream side of the check valve 21 and connected to the hot water tank 10, an extraction hot water valve 22 provided in the pipe 6 </ b> B, and a solid material generated in the coffee extractor 30. A bowl bucket 17 for receiving a ground bean extraction bowl (extraction bowl A), a drain bucket 18 disposed at the bottom of the cup 9, a sugar container 11 for storing sugar, and a cream container 12A for storing cream ingredients , A cream container 12B containing cream raw material for cappuccino, and a mixing bowl that receives sugar and cream through a chute 13, dissolves in a predetermined amount of hot water, and supplies the cup 9 through a supply pipe 14A The ur 14, a pipe 15 </ b> A for supplying hot water from the hot water tank 10 to the mixing bowl 14 disposed in the lower part of the cream container, a hot water valve 23 </ b> A provided in the pipe 15 </ b> A, and the mixing bowl 14 disposed in the lower part of the sugar container 11. A pipe 15B for supplying hot water from the hot water tank 10, a hot water valve 23 B provided in the pipe 15 B, and a pipe 6 A on the downstream side of the check valve 21, and the waste liquid is discharged to the drain bucket 18 through the hot water valve 24. A pipe 6C is provided.
[0010]
The hot water tank 10 has a power supply 10A for supplying current to the heater H ₁ for heating the drinking water, and a float that detects a change in the water level of the hot water in the tank and outputs a water level lowering signal when the water level falls below a predetermined level. It has switch 10B and hot water temperature sensor 10D which outputs the temperature detection signal according to the hot water temperature in a tank. The amount of water stored in the hot water tank 10 is 5 liters, the output of the heater H ₁ is 1 kW, and the hot water temperature in the hot water tank 10 is kept at about 97 ° C. The check valve 21 is formed by housing a ball made of fluororubber and a spring for urging the ball in a predetermined direction in a housing. In the present embodiment, the flow direction of hot water from the hot water tank 10 to the coffee extractor 30 is the forward direction, and the ball is urged upstream by a spring.
[0011]
The pump 60 holds the hot water stored in the hot water tank 10 in a space formed between the side wall of the pair of gears and the inner wall of the main body, and moves it to the outflow portion side along the inner wall of the main body. Is a gear pump that continuously delivers The amount of hot water delivered can be adjusted by controlling the rotational speed of a set of gears. A set of gears rotates by driving the shaft of one gear with a motor.
[0012]
The coffee extractor 30 includes a cylinder 32 to which ground beans are supplied from a coffee mill 80 via a ground bean chute 81, a piston drive motor 33 that raises and lowers a piston 39 in the cylinder 32, and a drive torque of the piston drive motor 33 that is driven by the piston 39. A cylinder unit D composed of a torque transmission unit 34 that transmits to the motor, a motor 35 that is driven based on the extraction operation and tilts the cylinder unit D at a predetermined angle via the gear 36, and a cylinder unit based on the rotation of the motor 35 A cap 37 is inserted into the cylinder 32 when D is inclined. The cap 37 supplies predetermined high-temperature hot water into the cylinder 32 via the pipe 6 </ b> A when the coffee beverage is extracted. The coffee beverage extracted by the cylinder 32 is supplied to the cup 9 through the beverage supply pipe 30A.
[0013]
Further, in the cup type vending machine having the above configuration, for the sake of simplicity, a cup supply unit that supplies the cup 9, a power supply unit that supplies current to the pump 60, and a power supply that supplies current to the mill motor of the coffee mill 80 The components such as the agitator, the agitator for agitating the beverage in the cup 9, the pipe for the cold beverage, and the raw material storage unit are not shown.
[0014]
2A and 2B show the coffee bean meter 50, where FIG. 2A shows a state in which the main part is viewed from the side, and FIG. 2B shows a state where the coffee bean storage unit 40 is partially opened. The coffee bean weighing device 50 is provided in a rectangular weighing chamber 51 for storing coffee beans, a supply port 51A for supplying the measured coffee beans by dropping them in the direction of arrow B, and a lower portion provided at the supply port 51A. A door 52, a protrusion 52 </ b> A provided on the lower door 52, a shaft 52 </ b> C that rotatably supports the lower door 52 in the measuring chamber 51, a spring 52 </ b> B that is coaxially attached to the shaft 52 </ b> C, and a vertical position in the measuring chamber 51. A top plate 53 movably provided in the direction, a slider 54 integrally fixed via the top plate 53 and the pin member 53A, and a guide groove formed in the measuring chamber 51 according to the moving direction of the pin member 53A. 51B, a base part 54C provided on the slider 54, a lower door drive part 54A provided on the upper part of the base part 54C, and a close attachment to the supply port 51A to detect the open state of the lower door 52 An optical sensor 56 composed of a light emitting element and a light receiving element, an engaging protrusion 51C for fixing the coffee bean meter 50 to the coffee bean container 40, and a coffee bean inlet for introducing the coffee bean into the measuring chamber 51. 51D, a shutter 51E made of a metal plate that restricts the supply of coffee beans to the weighing chamber 51, a rack portion 57 fitted to the base portion 54C, a sensor detection portion 58 provided in the rack portion 57, and a slider 54 A drive motor 70 for driving the motor, a pulse encoder 70A for generating a pulse corresponding to the rotational speed of the drive motor 70, a drive gear 71 attached to the rotating shaft of the drive motor 70 and engaged with the rack portion 57 in gear. A frame member 72 for fixing the drive motor 70, and a set of light-emitting elements and light-receiving elements attached to the frame member 72 for detecting the sensor detector 58. It has an optical sensor 73 consisting of.
[0015]
The frame member 72 is provided adjacent to a support frame F that supports the rack portion 57. The support frame F is provided with engagement portions (not shown) formed so as to engage with grooves (not shown) formed on both sides of the rack portion 57. The rack portion 57 is supported so as to be movable in the vertical direction when the grooves on both sides are engaged with the engaging portions of the support frame F. Moreover, the rack part 57 is attached to the base part 54C by fitting when the coffee bean weighing machine 50 is attached to the coffee bean container 40. When removing the coffee bean meter 50 from the coffee bean container 40, it is separated from the base 54C while being supported by the support frame F.
[0016]
The lower door 52 is formed so as to keep the supply port 51A closed by a spring 52B when not in operation. The spring 52B has a spring force that can open the lower door 52 and cause the ground beans to fall downward when the amount of coffee beans exceeding the capacity of the weighing chamber 51 is supplied due to abnormal driving of the coffee bean auger 43 or the like. Use what you have.
[0017]
The top plate 53 is formed in an L-shape having a long side portion that can move along the inner wall of the measuring chamber 51 when the slider 54 is driven. This long side portion functions as a bridge prevention member that prevents the occurrence of a bridge in which coffee beans remain in the measurement chamber 51 by moving upward in the measurement chamber 51 in synchronization with the opening operation of the lower door 52. To do.
[0018]
The coffee bean container 40 has a coffee bean auger 43 provided with a spiral feed blade at the lower part, and the coffee bean auger 43 is rotated into the metering chamber 51 based on a feeding operation by rotationally driving the auger drive motor 44. Supply beans.
[0019]
The coffee bean supply amount (weight) based on the volume of the measuring chamber 51 is set based on the relationship between the weight of the coffee beans in the reference volume of the measuring chamber 51 and the weight of the coffee beans actually supplied. The weight of the coffee beans in the reference volume is an amount that can be accommodated in the measuring chamber 51 when the slider 54 is driven by the drive motor 70 and the number of output pulses of the pulse encoder 70A becomes the reference value (reference pulse value). This is the weight of the coffee beans, and the weight of the coffee beans at this time is taken as the reference weight (reference value). When changing the weight of the coffee beans actually used, the pulse value (change pulse value) corresponding to the change amount is obtained based on the ratio from the reference pulse value, the reference value, and the coffee bean weight (change amount) to be set. The number of output pulses of the pulse encoder 70A from the origin position is monitored and when the changed pulse value is reached, the drive motor 70 is stopped and the slider 54 is stopped to bring the measuring chamber 51 to a volume corresponding to the changed amount. Set. By storing the reference pulse value and the reference value in a table in a memory (not shown), for example, the volume of the measuring chamber 51 is varied according to the change amount.
[0020]
3 shows the coffee bean meter 50 shown in FIG. 2 from the direction of the arrow A, and the slider 54 has a pair of plate-like members 54B on both sides of the weighing chamber 51, and a pin member on the pair of plate-like members 54B. 53A is fixed. The pair of plate-like members 54B are integrated with the base portion 54C at the lower part. A rack portion 57 is fitted to the base portion 54 </ b> C, and a sensor detection portion 58 is formed on the rack portion 57. By driving the rack portion 57 with a drive gear 71 (not shown), the slider 54 moves in the vertical direction. The amount of vertical movement of the slider 54 is determined based on the amount of coffee beans stored in a memory (not shown) and the output pulse of the pulse encoder 70A corresponding to the amount of coffee beans. Further, the slider 54 has a shutter opening / closing member 51G for opening and closing the shutter 51E on the side surface. The shutter opening / closing member 51G is a metal spring material, and moves together with the slider 54 to contact the end of the shutter 51E, thereby rotating the shutter 51E around the shutter fixing shaft 51F. In the figure, the shutter opening / closing member 51G is in contact with the end portion of the shutter 51E, whereby the shutter 51E rotates around the shutter fixing shaft 51F and closes the coffee bean inlet 51D. A slight gap is formed in the coffee bean inlet 51D in a state where the shutter 51E is activated. This is because the coffee beans do not pass even if there is a slight gap when the coffee bean introduction port 51D is closed, and the parts cost and assembly cost can be reduced by providing the gap. The shutter 51E is formed to be opened by a spring (not shown) attached to the shutter fixing shaft 51F when the shutter opening / closing member 51G is not in contact with the end.
[0021]
The shutter opening / closing member 51G is formed so as to be elastically deformed when coffee beans are sandwiched between the shutter 51E and the coffee bean introduction port 51D, and the slider 54 can be raised even when the coffee beans are sandwiched. It is formed as follows.
[0022]
Hereinafter, the weighing operation of the coffee bean meter 50 and the operation of the coffee beverage production apparatus of the present invention will be described based on the timing chart shown in FIG.
FIG. 5 shows a state in which the slider 54 is moved based on the volume setting operation and the top plate 53 is arranged at a position corresponding to the coffee bean supply amount, partially opened. The slider 54 corresponds to the coffee bean supply amount. The volume is lowered from the uppermost part in the measuring chamber 51, and the volume setting of the measuring chamber 51 is performed. The shutter 51E is lifted to open the coffee bean inlet 51D. The slider 54 has a movable amount by which the top plate 53 can be moved within the range where the guide groove 51 </ b> B is formed from the uppermost portion in the measuring chamber 51 by the engagement of the drive gear 71 of the drive motor 70 and the rack portion 57. ing. In the lower door 52, the lower door driving portion 54A of the base portion 54C is separated from the projecting portion 52A, and the elastic force of the spring 52B rotates counterclockwise around the shaft 52C to close the supply port 51A. Yes.
[0023]
A drive control unit (not shown) supplies power to the auger drive motor 44 when there is a coffee bean supply command. The auger drive motor 44 rotates based on the supply of electric power, whereby the coffee bean auger 43 rotates to send out the coffee beans B, thereby supplying the coffee beans B from the coffee bean inlet 51D to the measuring chamber 51.
[0024]
FIG. 6 shows a state in which coffee beans are fed into the weighing chamber 51 in a partially opened state, and the lower door 52 is slightly pushed open by the coffee beans B.
[0025]
The optical sensor 56 outputs a light reception (ON) signal to the drive control unit when the lower door 52 is slightly opened by the pressure of the coffee beans B filled in the weighing chamber 51 (lower door opening). The drive control unit stops energization to the auger drive motor 44 when the ON signal of the optical sensor 56 is input. The coffee bean auger 43 stops rotating.
[0026]
FIG. 7 shows the coffee bean meter 50 partially opened before the coffee beans are dispensed, and the drive control unit supplies power to the drive motor 70 based on the ON signal of the optical sensor 56. The drive motor 70 rotates based on the supply of power, thereby raising the slider 54. The slider 54 moves in the uppermost direction in the weighing chamber 51 and closes the coffee bean inlet 51D by driving the shutter 51E. In FIG. 7, the lower door 52 is in a state where the protruding portion 52 </ b> A is in contact with the lower door driving portion 54 </ b> A of the base portion 54 </ b> C that is raised together with the slider 54.
[0027]
When the top 53 is raised based on the rise of the slider 54, the long side portion in contact with the coffee bean B in the measuring chamber 51 moves to prevent the coffee bean B from bridging in the measuring chamber 51. To do. Lower door driving unit 54A, based on the rise of the slider 54 abuts against the projections 52A after the shutter 51E is closed, the supply port 51A Open rotates the lower door 52 in a clockwise direction based on the rising operation.
[0028]
FIG. 8 shows the coffee bean meter 50 partially opened after the coffee beans have been dispensed, and the slider 54 has moved to the top in the measuring chamber 51 and the lower door 52 has been opened to weigh. In this state, coffee beans B are paid out from the room 51. At the coffee bean introduction port 51 </ b> D, the shutter 51 </ b> E is operated to restrict the coffee bean B from entering the measuring chamber 51.
[0029]
The coffee bean meter 50 opens the lower door 52 to supply the coffee beans filled in the measuring chamber 51 to the lower side of the supply port 51A. When the optical sensor 73 is shielded from light (OFF) by the sensor detection unit 58 raised by the rise of the rack unit 57, the optical sensor 73 outputs an OFF signal to the drive control unit. The drive control unit stops energization of the drive motor 70 based on the detection signal. As a result, the drive motor 70 stops.
[0030]
The coffee beans B delivered from the coffee bean meter 50 are supplied to the coffee mill 80 and pulverized to a predetermined particle size. The drive control unit executes the volume setting operation of the weighing chamber 51 after the delay time corresponding to the ground bean forming operation in the coffee mill 80 has elapsed.
[0031]
The drive control unit supplies power to the drive motor 70. The drive motor 70 rotates based on the supply of electric power, thereby lowering the slider 54. The lower door 52 closes the supply port 51 </ b> A based on the lowering of the slider 54. When the lower door 52 is closed, the shutter 51E is opened. The drive control unit determines the vertical movement amount of the slider 54 so that the weighing chamber 51 has a volume corresponding to the weight of the coffee beans, counts the output pulses output from the pulse encoder 70A, and counts according to the set value. When the value is reached, the power supply to the drive motor 70 is stopped. The amount of vertical movement of the slider 54 from when the shutter 51E is fully opened to when the drive motor 70 stops is the volume adjustment amount of the measuring chamber 51. The slider 54 is placed in a standby state shown in FIG. 5 with the top plate 53 disposed at a predetermined height in the weighing chamber 51 based on the stop of the drive motor 70.
[0032]
FIG. 9 shows the results measured for the weight of the coffee beans, (a) the weight of the coffee beans weighed by the coffee bean meter 50, and (b) the weight of the coffee beans supplied only by the coffee bean auger. Show. In the measurement, when the coffee bean container is sufficiently filled with coffee beans, the operation is performed to supply the amount of coffee beans necessary for extraction, and the coffee bean meter 50 is used to measure based on the coffee bean volume. In addition, the fluctuation range of the coffee bean weight is within an allowable range. On the other hand, in the supply of coffee beans by rotation control of the coffee bean auger, the fluctuation range of the coffee bean weight exceeds the allowable range, and further, the coffee beans in the coffee bean container are reduced to reduce the coffee between the auger blades. The bean filling property is reduced, resulting in a decrease in coffee bean weight.
[0033]
The coffee extractor 30 receives the ground beans supplied from the coffee mill 80 via the ground bean chute 81 in the cylinder 32 of the cylinder unit D that stands by in an upright state. Next, the extraction control unit (not shown) supplies power to the motor 35. The motor 35 is supplied with electric power and rotates to transmit a driving force to the gear 36. The cylinder unit D rotates counterclockwise about the shaft 34A based on the driving force transmitted through the gear 36, and stops in the inclined state. Next, the cap 37 is inserted into the cylinder 32 of the cylinder unit D in the inclined state. The cap 37 moves in the insertion direction by transmitting the driving force of the motor 35 via a driving force transmitting member (not shown). Next, the extraction control unit supplies power to the piston drive motor 33. The piston drive motor 33 is rotated by being supplied with electric power to move the piston 39 in the upward direction in the cylinder 32. Thus, the piston 39 cooperates with the cap 37 to compress (tamping) the ground beans accommodated in the cylinder 32. Next, the extraction control unit supplies power to the motor of the pump 60. The motor of the pump 60 is supplied with electric power and rotates to supply hot hot water into the cylinder 32 via the pipe 6A. When hot water passes through the compressed ground beans, it extracts coffee components and becomes a coffee beverage. The extracted coffee beverage is supplied to the cup 9 through the beverage supply pipe 30A. The extraction control unit supplies the cup 9 with auxiliary ingredients such as sugar and cream according to the type of beverage (sugar, black, cream, etc.). The coffee beverage thus prepared is sold to the buyer.
[0034]
The extraction control unit supplies power to the piston drive motor 33 after the extraction operation is completed. The piston drive motor 33 is rotated by being supplied with electric power to move the piston 39 in the upward direction in the cylinder 32. As a result, the piston 39 cooperates with the cap 37 to compress and solidify the ground beans from which the coffee has been extracted. The coffee liquid squeezed out at the time of compression is discharged into the drain bucket through the pipe 6C. Next, the extraction control unit supplies power to the motor 35. The motor 35 transmits driving force to the gear 36 by rotating based on the supply of electric power. The cap 37 is detached from the cylinder 32 by transmitting the driving force of the motor 35 via a driving force transmitting member (not shown). After the cap 37 is detached from the cylinder 32, the extraction control unit temporarily stops the cap 37 by stopping energization of the motor 35. Next, the piston 39 pushes up the extraction basket A obtained by solidifying the ground beans so as to be exposed to the outside of the cylinder 32. The extraction control unit supplies power to the motor 35 again. The cylinder unit D rotates clockwise about the shaft 34A based on the driving force transmitted through the gear 36, and shifts from the inclined state to the upright state. In the process, the extracted soot A exposed to the outside of the cylinder 32 falls to the soot bucket 17 by being wiped with a wiper (not shown). The extraction control unit stops energization of the motor 35 when the cylinder unit D returns to the upright state. Further, electric power is supplied to the piston drive motor 33. The piston drive motor 33 is supplied with electric power and rotates to move the piston 39 to the lowermost part in the cylinder 32. In this way, the standby state is entered.
[0035]
According to the above-described embodiment, the following actions and effects can be obtained.
(A) At the outlet of the coffee bean container 40, a coffee bean meter 50 for measuring coffee beans based on volume is provided, so when coffee beans are dispensed due to individual differences in coffee bean size, water content, etc. Variation in the taste of coffee beverages extracted thereby, and the adjustment range of extraction conditions is small. For example, poor extraction in a pressure extraction type coffee extractor such as an espresso machine Thus, it is possible to sell a stable quality coffee beverage without causing such problems.
(B) Since the coffee bean meter 50 has the measuring chamber 51 whose volume is determined by the lower door 52 and the top plate 53, variation in measuring accuracy can be reduced, and the extraction state in the coffee extractor 30 Accordingly, the amount of coffee beans used can be increased or decreased with high accuracy. Also, increase or decrease the amount of coffee beans used with high accuracy based on the type of coffee beverage (eg, blend, American, espresso) and the presence or absence of auxiliary ingredients (eg, sugar, cream, sugar and cream) You can also.
(C) By providing a plurality of coffee bean containers 40 to which a coffee bean meter 50 is attached, the amount of coffee beans used is high when blended coffee using a plurality of types of coffee beans is extracted by one extraction. Since it can be set with accuracy, the mixing accuracy of ground beans is improved, and a blended coffee with a stable taste can be extracted.
(D) Since the coffee bean meter 50 is formed so as to be fed from the coffee bean container 40 by the coffee bean auger 43, the coffee beans can be fed without causing a gap in the weighing chamber 51. As a result, variations in weighing accuracy due to the filling properties of the coffee beans can be eliminated.
[0036]
In the coffee beverage manufacturing apparatus described above, the coffee beans are fed out in the horizontal direction by the coffee bean auger 43 and filled in the coffee bean meter 50. However, the coffee beans are fed in the vertical direction. The coffee bean meter 50 may be filled with coffee beans using other bean supply means other than the coffee bean auger 43.
[0037]
In the embodiment described above, in the volume setting operation after the coffee beans are dispensed from the coffee bean meter 50, the output pulses of the pulse encoder 70A based on the vertical movement amount of the slider 54 are counted. The control step 70 is, for example, the second volume setting for the increase / decrease (difference) of the coffee beans based on the weight of the coffee beans desired to be set after performing the first volume setting operation for setting the reference volume of the measuring chamber 51. A method for performing the operation, or a plurality of change pulse values for setting the volume of the measuring chamber 51 according to the weight of the coffee bean to be set is tabulated in advance and provided in a memory (not shown), and feedback control according to the extraction state The output pulse of the pulse encoder 70A is counted and the changed pulse value read from the memory is obtained. In a method to stop the slider 54 or the like. Moreover, you may perform by other volume setting operation | movement.
[0038]
【The invention's effect】
As described above, according to the coffee beverage manufacturing apparatus of the present invention, the coffee bean weighing unit is provided with the weighing unit that measures the coffee beans supplied from the coffee bean container by the feeding operation of the feeding member based on the volume. Even in a coffee extractor having excellent coffee bean weighing accuracy and a small adjustment range of extraction conditions, the amount of coffee beans used can be set without causing poor extraction.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a coffee beverage manufacturing apparatus according to an embodiment of the present invention. FIG. 2 shows a coffee bean meter, (a) is a side view, and (b) is attached to a coffee bean container. FIG. 3 is a side view showing the coffee bean meter from the direction of bean introduction. FIG. 4 is a timing chart showing the operation of the coffee bean meter. FIG. 5 shows the operation of the coffee bean meter. Partially opened side view [Fig. 6] Partially opened side view showing the operation of the coffee bean meter [Fig. 7] Partially opened side view showing the operation of the coffee bean meter [Fig. 8] Coffee bean meter Fig. 9 is a partially opened side view showing the operation of Fig. 9. Fig. 9 shows a measurement diagram measured for the weight of the coffee beans, (a) the weight of the coffee beans weighed by the coffee bean meter, and (b) the coffee bean auger. Only supplied by The weight of the Coffee Bean DESCRIPTION OF SYMBOLS
1. Intake pipe 1A, intake valve 2, cistern 2A, float switch 3A, pipe 6A, pipe 6B, pipe 6C, pipe 9, cup 10, hot water tank 10A, power supply unit 10B, float switch 10D, hot water temperature sensor 11, sugar Container 12A, Cream container 12B, Cream container 13, Chute 14, Mixing bowl 14A, Supply pipe 15A, Pipe 15B, Pipe 17, Straw bucket 18, Drain bucket 19, Flow sensor 20, Solenoid valve 21, Check valve 22, Extraction Hot water valve 23A, hot water valve 23B, hot water valve 24, hot water valve 25, pressure sensor 30, coffee extractor 30A, beverage supply pipe 32, cylinder 33, piston drive motor 34, torque transmission unit 34A, shaft 35, motor 36, gear 37, cap 39, piston 40, coffee bean container 41, stirring gear 41A, shaft 43, co Coffee beans auger 43A, rotating shaft 44, auger drive motor 45, speed reducer 50, coffee bean meter 51, weighing chamber 51A, supply port 51B, guide groove 51C, engaging projection 51D, coffee bean inlet 51E, shutter 51F, Shutter fixing shaft 51G, shutter opening / closing member 52, lower door 52A, protrusion 52B, spring 52C, shaft 53, top plate 53A, pin member 54, slider 54A, lower door driving portion 54B, plate-like member 54C, base portion 56 , Optical sensor 57, rack part 58, sensor detection part 60, pump 60A, bypass pipe 60B, valve 70 drive motor 70A, pulse encoder 71, drive gear 72, frame member 73, optical sensor 80, coffee mill 80A, bean chute 80B , Ground bean outlet 81, ground bean chute

Claims (13)

In a coffee beverage production apparatus for supplying coffee beverages by pulverizing coffee beans supplied from a coffee bean container with a coffee mill and supplying them to a coffee extractor as ground beans and extracting them,
A coffee bean weighing unit having a weighing unit for weighing the coffee beans based on a volume according to weight, and supplying the measured coffee beans to the coffee mill;
Wherein a coffee beans feed from the accommodation unit sends out the coffee beans member, it has a bean supplying means for supplying the coffee beans to the metering unit on the basis of the feeding operation of the feed member,
The coffee bean weighing means includes
A weighing chamber for receiving the coffee beans fed from the coffee bean container by the feed member;
A top plate that is movably provided inside the weighing chamber and sets the volume;
A door provided at the lower part of the weighing chamber so as to be rotatable about one end as a rotation fulcrum;
A slider provided to operate the top plate and the door in synchronization with a direction in which they approach each other and a direction in which they move away from each other;
A driving motor for generating a driving force for driving the slider;
An apparatus for producing a coffee beverage, comprising: the weighing unit including a sensor that detects an origin position of the slider when the volume is set . The coffee beans metering means, claim paragraph 1, wherein placing the slider to a position corresponding to the volume based on the output pulses of the encoder for generating a pulse corresponding to the rotational speed of the drive motor Coffee beverage production equipment. The weighing unit determines the amount of movement of the slider based on a ratio of the weight of the coffee bean at a reference volume obtained by moving the slider by a reference amount from the origin position and the weight of the coffee bean to be set. coffee beverage production device as set forth in claim 1, wherein claims, characterized in that. The top plate, the coffee beverage preparation device of claim 1 wherein claims, characterized in that it has a coffee bean bridge prevention member movable along the inside wall of the metering chamber. The coffee beans metering means, the coffee beverage preparation device of claim 1 wherein claims, characterized in that it comprises a door sensor for detecting that the door is opened by the coffee beans supplied to the metering chamber. The coffee beans metering means, said coffee beverage preparation device of claim 1 wherein claims, characterized in that it comprises from coffee beans accommodating portion shutter for regulating the introduction of the coffee beans in the passage leading to the metering chamber. The coffee beverage manufacturing apparatus according to claim 6 , wherein the shutter opens and closes in synchronization with opening and closing of the door based on driving of the slider. The shutter, the opening of the passage in synchronization with the descent of the slider, the manufacturing apparatus according to claim 6 wherein wherein the coffee beverage in synchronization with rising of the slider, characterized in that closing said passage. The said shutter is closed after the introduction operation | movement of the said coffee beans from the said coffee bean accommodating part to the said measurement chamber stops, The manufacturing apparatus of the coffee drink of Claim 6 characterized by the above-mentioned. The said shutter has a clearance gap smaller than the size of the said coffee bean between the said channel | paths when the said channel | path is closed, The manufacturing apparatus of the coffee drink of Claim 6 characterized by the above-mentioned. The apparatus for producing a coffee beverage according to claim 6 , wherein the door is opened when the shutter is in a state in which the passage is closed.   2. The coffee beverage production according to claim 1, wherein the bean supply means feeds the coffee beans accommodated in the coffee bean accommodating portion horizontally by the delivery member and supplies the coffee beans to the weighing portion. apparatus.   2. The apparatus for producing a coffee beverage according to claim 1, wherein the feeding member is a coffee bean auger provided at a lower portion of the coffee bean container.

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