JP5004552B2 - Coffee extractor - Google Patents

Description

  The present invention relates to a coffee extractor, and more particularly, to a coffee extractor that can extract stable quality coffee even when the amount of coffee to be extracted changes.

  In a coffee extractor that pours hot coffee from the upper pouring nozzle into the coffee powder in the dripper placed on the server and extracts the coffee to the server, the amount of coffee to be extracted, that is, the amount of coffee powder in the dripper changes. However, various ideas have been added to extract coffee with the same flavor and fragrance.

For example, it is known that a pouring nozzle is swirled in a spiral shape or moved so as to draw a character of “no”. Further, in order to improve these disadvantages, the pouring nozzle is moved to the X axis and There is also known one that moves in two directions on the Y-axis to make a circular movement and controls the amount of pouring per unit time (for example, see Patent Document 1).
Japanese Patent No. 3654853

  However, in the coffee extractor described in Patent Document 1, a complicated mechanism is required to move the pouring nozzle in two directions, the X axis and the Y axis, which not only increases the manufacturing cost but also requires maintenance and inspection. There is an inconvenience that it must be done frequently.

  Accordingly, the present invention provides a coffee extractor that can perform pouring according to the amount of coffee powder in the dripper with a simple mechanism, and can extract stable quality coffee even if the amount of coffee to be extracted changes. The purpose is to provide.

In order to solve the above problems, the present invention is an extractor for pouring hot water from an upper pouring nozzle into coffee powder in a dripper disposed on a server and extracting the coffee to the server, the dripper and the A bottomed cylindrical pouring disperser having an open top is provided between the pouring nozzle so as to be rotatable about the central axis of the dripper, and a partition is provided inside the pouring disperser to provide the pouring The inside of the disperser is partitioned into a first pouring part at the inner peripheral part and a second pouring part at the outer peripheral part, and a pouring hole is provided at the bottom of each pouring part, and further, as the pouring nozzle, A pouring valve for controlling the pouring from each pouring nozzle provided with a first pouring nozzle for pouring into the first pouring portion and a second pouring nozzle for pouring into the second pouring portion. If, formed by providing a drive means for rotating said pouring distributor in coffee extractor, the following It is characterized in that take the deposition.

That is, according to the present invention, the partition wall that partitions the first pouring part and the second pouring part of the pouring disperser has a shape in which the central part is constricted, and the bottom part of the first pouring part has a central part and a peripheral part. a first pouring hole and the first pouring out holes provided in the two locations of the parts, second pouring hole and the second pouring out near constriction part of the partition wall central to the bottom of the second pouring portion the hole is provided, and the positional relationship between Kakuchuyu out holes, dispensing position from the order of closeness to the center of rotation of the water distributor, first pouring hole, a second pouring hole, first pouring out hole, It is characterized by being arranged so as to be the second pouring outer hole .

  Further, when the coffee extraction amount is ½ or less of the preset maximum extraction amount, for example, when the set amount is two cups and one cup is taken, the pouring valve of the second pouring nozzle is closed and the first pouring nozzle is closed. When only the pouring nozzle is poured into the first pouring part and the coffee extraction amount exceeds 1/2 of the maximum extraction amount, for example when two cups are taken, the pouring valve of the second pouring nozzle is opened. By setting so that both hot water pouring nozzles are poured into both hot water pouring parts, the hot water can be poured evenly into the coffee powder in the dripper.

  Furthermore, by setting the number of revolutions of the pouring disperser to 4 to 8 revolutions per minute, which is faster than the moving speed of the conventional pouring nozzle, the entire coffee powder can be poured in a short time, By setting each pouring flow rate of the 1 pouring nozzle and the 2nd pouring nozzle to 100 to 200 ml per minute, which is smaller than conventional, it is possible to extract coffee over a sufficient time even when the coffee extraction amount is small. It is possible to extract the flavor and fragrance sufficiently. Furthermore, the amount of remaining hot water in the 2nd pouring part after completion | finish of pouring can be decreased by making the outer peripheral wall inner surface of the said pouring disperser into the conical surface to which a diameter shrinks below.

  According to the coffee extractor of the present invention, when the coffee extraction amount is small and the coffee powder is in the center of the dripper, the pouring disperser is rotated while pouring from the first pouring nozzle to the first pouring portion. As a result, an appropriate amount of hot water can be poured into the entire coffee powder in the dripper. When the coffee extraction amount is large and there is coffee powder in the entire dripper, each of the first and second pouring parts is poured by pouring hot water from both the first pouring nozzle and the second pouring nozzle. An appropriate amount of hot water can be poured into the entire coffee powder in the dripper from the pouring hole. Therefore, coffee can be extracted in an optimum state without impairing the flavor and aroma, whether the coffee extraction amount is small or large. Moreover, the structure is simple and can be manufactured at low cost, and maintenance and inspection can be easily performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of a coffee brewing machine to which the present invention is applied . FIG. 1 is a sectional side view, FIG. 2 is a sectional plan view, FIG. 3 is a sectional view of the main part, and FIG. FIG. 5 is a front view of the pouring disperser and FIG.

  The coffee extractor 11 includes two left and right extraction units having the same configuration, and has a warmer plate 14 on which the server 13 is placed on the front upper surface of the base plate 12, and the rear of the base plate 12. A casing 17 containing a hot water storage tank 15 and a power supply board 16 is erected. Further, a pouring mechanism 18 is accommodated in front of the upper portion of the casing 17, a head portion 20 having an operation board 19 is provided on the front surface, and a dripper holder that holds a dripper 21 in front of the middle portion in the vertical direction of the casing 17. 22 is provided. Further, a water supply port 24 having a water supply electromagnetic valve 23 is provided behind the base plate 12.

  The pouring mechanism 18 includes a first pouring nozzle 31 and a second pouring nozzle 32, a pouring disperser 34 that is rotated by a motor 33, and hot water supply to the first pouring nozzle 31 and the second pouring nozzle 32. The first solenoid valve 35 and the second solenoid valve 36 which are pouring valves for controlling each of the above are provided, and are attached to the bottom plate of the head portion 20 by a nozzle attachment member 37.

  The pouring disperser 34 has a bottomed cylindrical shape with an upper opening, and is provided so as to be rotatable about the central axis of the dripper 21. On the bottom plate of the pouring disperser 34, there is provided a partition wall 40 that divides the interior of the pouring disperser 34 into a first pouring portion 38 at the inner peripheral portion and a second pouring portion 39 at the outer peripheral portion. A first pouring hole 41 and a second pouring hole 42 are provided at the bottoms of the first pouring part 38 and the second pouring part 39, respectively. Furthermore, the inner surface 34a of the outer peripheral wall of the pouring disperser 34 is formed in a conical surface whose diameter is reduced on the lower side, and a joint portion having a peripheral groove 34b protrudes at the center.

  The pouring disperser 34 is detachably connected to the motor 33 via the rotating member 44 rotatably held by the pouring bearing 43. The rotating member 44 is composed of a hollow member whose upper end and lower end are rotatably and liquid-tightly held on the pouring bearing 43 by the upper joint 45 and the lower joint 46, respectively. A cylindrical fitting member 44 a into which the circumferential groove 34 b is detachably fitted is provided, and a pipe connection portion 47 constituting the first pouring nozzle 31 is provided on the side of the pouring bearing 43. Yes. Hot water in the first pouring nozzle 31 flows from the hot water storage tank 15 through the first electromagnetic valve 35 and the pipe 31a into the pouring bearing 43 through the pipe connection portion 47, and through the rotating member 44 through the opening 44b. The rotary member 44 flows down from the lower end portion into the first pouring portion 38.

  Further, a nozzle portion 32b to which a pipe 32a constituting the second pouring nozzle 32 is connected is provided on the lower side of the pouring bearing 43. The hot water of the second pouring nozzle 32 is stored in the hot water storage tank 15. From the nozzle part 32b and into the second pouring part 39 through the second electromagnetic valve 36 and the pipe 32a.

  Next, the usage example of the coffee extractor 11 corresponding to taking one cup of coffee and taking two cups will be described. First, when the coffee extractor 11 is turned on, the water supply electromagnetic valve 23 opens and closes according to the amount of hot water stored in the hot water storage tank 15 to supply water to the hot water storage tank 15, and the amount of water in the hot water storage tank 15 is set to a set amount. In addition, the heater 15a in the hot water storage tank 15 operates to heat the hot water in the hot water storage tank 15 to a predetermined temperature, for example, 95 ° C.

  When the coffee extraction amount is one cup, a predetermined filter is set on the dripper 21, and one cup of coffee powder is charged, and then the dripper 21 is set on the dripper holder 22. At this time, the normal dripper 21 is formed in a funnel shape at the bottom, and the upper part of the filter is also expanded so that the coffee powder on the filter is put into the center of the dripper 21. Will be.

  Next, when a button for taking a cup on the operation board 19 is pressed, the motor 33 is operated to rotate the pouring disperser 34 and the first electromagnetic valve 35 is opened, so that the hot water in the hot water storage tank 15 is heated. Hot water is sent from the first pouring nozzle 31 to the first pouring part 38 on the inner peripheral part of the pouring disperser 34 through the path, and the first pouring hole located on the inner peripheral side of the pouring disperser 34. Hot water is poured from 41 toward the center of the dripper 21.

  Therefore, in the case of taking one cup, the hot water is not poured into the outer peripheral portion of the dripper 21 having almost no coffee powder, and the hot water is effectively poured toward the coffee powder charged in the central portion of the dripper 21. Will be. In addition, the amount of pouring when taking a cup can be arbitrarily set according to the required amount and concentration of coffee for one cup, but is generally 140 to 200 ml, and pouring is performed several times. It is divided into two. The first time of pouring is to pour hot water into the whole coffee powder and steam the coffee powder. The second and subsequent times are used for coffee extraction, 15-30 ml of hot water is absorbed by the coffee powder and filter, and the rest It flows down from the dripper 21 to the server 13 below.

  Since the amount of the first pouring at the time of taking one cup is about 12 to 25 ml, the number of rotations per unit time of the pouring disperser 34 and the amount of pouring per unit time from the first pouring nozzle 31 are set. By setting appropriately, hot water can be poured evenly over the whole of the coffee powder and effective steaming can be performed. For example, if the number of revolutions of the pouring disperser 34 is set to 6 revolutions per minute and the amount of pouring per unit time from the first pouring nozzle 31 is set to 150 ml per minute, the pouring disperser 34 is rotated once. 25 ml of hot water is poured from the first pouring nozzle 31 through the pouring disperser 34, so that the entire coffee powder in the dripper 21 can be poured evenly.

  If the amount of pouring per unit time is too small, it takes a long time to extract coffee, and if it is too large, the number of revolutions per unit time of the pouring disperser 34 must be increased, and it rotates at high speed. Since the hot water may be scattered from the pouring disperser 34, the number of rotations of the pouring disperser 34 is suitably 4 to 8 rotations per minute, and the amount of pouring from the first pouring nozzle 31 is 100 to 100 minutes per minute. 200 ml is appropriate. In addition, the second and subsequent pouring may be performed by dividing an appropriate amount of hot water into a plurality of times, as in the prior art.

  Next, when taking two cups, the dripper 21 into which two cups of coffee powder have been put on the filter is set in the dripper holder 22, and then a button for taking two cups of coffee is pressed. Thereby, both the 1st solenoid valve 35 and the 2nd solenoid valve 36 open, and the hot water in the hot water storage tank 15 passes through the 1st pouring part 38 of the pouring disperser 34 from the 1st pouring nozzle 31, and the 2nd. Hot water is sent from the pouring nozzle 32 to the first pouring part 39 of the pouring disperser 34, and hot water is supplied to the dripper 21 from the first pouring hole 41 on the inner peripheral side and the second pouring hole 42 on the outer peripheral side. Poured.

  Therefore, in the case of taking two cups where the amount of coffee powder is larger and the surface area is wider than in the case of taking a cup, hot water is poured from both the inner and outer circumferences of the pouring disperser 34. As a result, hot water is poured evenly over the entire coffee powder in the dripper 21. If the amount of pouring per unit time from the second pouring nozzle 32 is set to the same amount as that of the first pouring nozzle 31, double hot water will be poured into the dripper 21 when two cups are taken. If the number of rotations per unit time of the pouring disperser 34 is also the same as when taking a cup, pouring hot water at the same timing as when taking a cup makes 1 from the steaming of coffee powder to the extraction. Two cups of coffee can be poured in the same time as the cup. As a result, approximately the same quality of coffee can be obtained by taking 1 cup and 2 cups, and even if the amount of coffee extracted changes, the flavor and aroma are not impaired.

Moreover, since the bottom area of the 2nd pouring part 39 can be made small by forming the outer peripheral wall inner surface of the 2nd pouring part 39 by the conical surface 42 to which a diameter is reduced below, 2 The amount of remaining hot water in the pouring part 39 can be reduced, and almost the entire amount of hot water that has flowed into the second pouring part 39 from the second pouring nozzle 32 is poured out toward the coffee powder in the dripper 21. Can do. It is also possible to expand the lower portion of the partition wall 40 and reduce the lower portions of the pouring portions 38 and 39 so as to form a V-shaped groove. The upper surface of the bottom plate is inclined downward toward the pouring holes 41 and 42. It can also be formed.

  Furthermore, the shape and size of the pouring disperser 34 can be appropriately selected according to conditions such as the coffee extraction amount. For example, the shape of the partition wall 40 provided in the pouring disperser 34 is flat as described above. It can be formed into a polygonal shape instead of a circular shape, and the partition wall 40 is provided in double or more to make the pouring part into three or more, and according to this, the number of pouring nozzles is increased, It is also possible to form so as to control the opening and closing of the electromagnetic valve of each pouring nozzle.

  Further, in the above description, the description has been given of taking one cup and two cups. However, it is possible to cope with more than three cups, and the start of pouring from the second pouring nozzle 32 is the maximum extraction amount of coffee. For example, when the maximum extraction amount is 6 cups, the hot water is poured only from the first pouring nozzle when the maximum extraction amount is 6 cups or less, that is, 1 to 3 cups, and when it exceeds 1/2, that is, 4 cups. It can be set to pour from both pouring nozzles when there are more than a cup.

6 to 8 show an embodiment of the present invention . FIG. 6 is a plan view of a pouring disperser, and FIG. 7 is an explanation showing a pouring state when pouring from only the first pouring nozzle. FIG. 8 and FIG. 8 are explanatory views showing a pouring state when pouring from both the first pouring nozzle and the second pouring nozzle.

As shown in FIG. 6, the pouring disperser 51 shown in the present embodiment has a partition 54 that partitions the first pouring part 52 and the second pouring part 53 in a shape in which the central part is constricted, and the first pouring part 51 is formed. with the hot water unit 52 first pouring hole 55a and the first pouring out hole 55b is provided at two locations between the central portion and the peripheral portion, the bottom portion of the second pouring portion 53 constricted central bulkhead 54 second pouring hole 56a and the second pouring out hole 56b is provided in a portion near. Kakuchuyu out holes 55a, 55b, 56a, the positional relationship of 56b, as shown in FIGS. 7 and 8, dispensing position from the order of closeness to the center of rotation of the water distributor 51, the first pouring hole 55a, the 2 pouring hole 56a, first pouring out hole 55b, it is arranged such that the second pouring out hole 56b. Therefore, the optimal pouring according to the height (thickness) of the coffee powder 57 from the filter 58 can be performed.

Thus, first pouring hole 55a provided in the first molten metal 52 and second molten metal 53, the first pouring out hole 55b and the second pouring hole 56a, second pouring out hole 56b By appropriately setting the arrangement of the coffee according to the conditions such as the shape of the dripper and the amount of coffee extracted, the flavor and aroma of the extracted coffee can be further stabilized as compared with the case where it is simply divided into the inner periphery and the outer periphery as described above. Can be made.

It is a section side view showing one embodiment of a coffee extraction machine to which the present invention is applied . Similarly, it is a cross-sectional plan view. It is a sectional view of the principal part similarly. It is a front view of a pouring disperser similarly. It is a top view of a pouring disperser similarly. It is a top view of the pouring disperser which shows one Embodiment of the coffee extractor of this invention. It is explanatory drawing which shows the pouring state when pouring only from the 1st pouring nozzle. It is explanatory drawing which shows the pouring state when pouring from both the 1st pouring nozzle and the 2nd pouring nozzle.

DESCRIPTION OF SYMBOLS 11 Coffee extractor 12 Base plate 13 Server 14 Warmer plate 15 Hot water storage tank 15a Heater 16 Power supply board 17 Casing 18 Pouring mechanism 19 Operation board 20 Head part 21 Dripper 22 Dripper holder 23 Water supply solenoid valve 24 Water supply port 31 1st pouring water Nozzle 31a Pipe 32 Second pouring nozzle 32a Pipe 32b Nozzle portion 33 Motor 34 Pouring distributor 34a Outer wall inner surface 34b Circumferential groove 35 First solenoid valve 36 Second solenoid valve 37 Nozzle mounting member 38 First pouring portion 39 First 2 Pouring part 40 Bulkhead 41 1st pouring hole 42 2nd pouring hole 43 Pouring bearing 44 Rotating member 44a Fitting member 44b Opening 45 Upper joint 46 Lower joint 47 Piping connection part 51 Pouring distributor 52 1st Pouring part 53 Second pouring part 54 Bulkhead
55a 1st pouring hole
55b 1st pouring outer hole
56a 2nd pouring hole
56b 2nd pouring outer hole 57 coffee powder 58 filter

Claims (6)

An extractor for pouring hot water from an upper pouring nozzle into coffee powder in a dripper arranged on a server to extract coffee to the server, wherein the upper portion is open between the dripper and the pouring nozzle. The bottomed cylindrical pouring disperser is provided so as to be rotatable about the central axis of the dripper, and a partition is provided inside the pouring disperser so that the inside of the pouring disperser has a first pouring in the inner periphery. A partition is formed in the hot water part and the second pouring part on the outer peripheral part, a pouring hole is provided in the bottom part of each pouring part, and the first pouring part is poured into the first pouring part as the pouring nozzle. 1 pouring nozzle and a second pouring nozzle for pouring into the second pouring section are provided, a pouring valve for controlling pouring from each pouring nozzle, and a drive for rotating the pouring disperser In a coffee extractor comprising means,
The partition wall (54) that partitions the first pouring part (52) and the second pouring part (53) of the pouring disperser (51) is shaped so that the central part is constricted, and the first pouring part (52 ) bottom of the first pouring hole and (55a) a first molten metal out hole (55b) at two positions between the central portion and the peripheral portion is provided in the, in the bottom of the second pouring portion (53) partition wall (54) a second pouring hole and (56a) a second pouring out hole (56b) in the constricted portion near the center is provided, and, Kakuchuyu out holes (55a, 55b, 56a, 56b) the positional relationship between and in order from the location closest to the note rotation center of the hot water distributor (51), first pouring hole (55a), a second pouring hole (56a), a first pouring out hole (55b), the second coffee extractor, characterized in that arranged so as to be poured out hole (56b). When the coffee extraction amount is ½ or less of the preset maximum extraction amount, the pouring valve of the second pouring nozzle is closed and only the first pouring nozzle is poured into the first pouring portion. when the coffee extract amount exceeds the half of the maximum extraction amount is claims, characterized in that the pouring on both pouring part from both pouring nozzle by opening the pouring valve of the second pouring nozzle The coffee extractor according to 1 . 3. The coffee extractor according to claim 2, wherein the maximum extraction amount is two cups of coffee. The coffee extractor according to any one of claims 1 to 3, wherein the number of rotations of the pouring disperser is set to 4 to 8 rotations per minute. The coffee extraction machine according to any one of claims 1 to 4, wherein a pouring flow rate from each pouring nozzle is set to 100 to 200 ml per minute. The coffee extractor according to any one of claims 1 to 5, wherein an inner surface of an outer peripheral wall of the pouring disperser is formed as a conical surface whose diameter is reduced downward.

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