JPH02172419A - Drink extraction device - Google Patents

Abstract

PURPOSE:To enable economical extraction of a drink of constantly stable quality from a raw material through simple structure by a method wherein the feed of a drink and discharge of an extraction residue are effected through a rotation action by which an extraction container is rotated one time. CONSTITUTION:By feeding a raw material from a guide cylinder 6 of a raw material feed device 31 to an extraction container 2 and hot water through a tube 7 of a hot water feed device 41 thereto, extraction of a drink is started. This state is left standing for a while and enough extraction of a drink is effected and an extraction residue is settled on the bottom of the extraction container 2. The extraction container 2 and a cam 65 secured on a rotary shaft 16 of the extraction container 2 are slowly rotated. The extracted drink is collected through a filter 15 to a funnel 3 and flows to a cup 5. Simultaneously, the extraction residue settled on the bottom of the extraction container 2 is scraped off by a scraper 20 secured on a rotary shaft 19. When, with the progress of rotation of the extraction container 2, the scraper 20 is separated away from the container wall of the extraction container 2, the extraction residue is separated away from the scraper 20 under gravity, and is dropped in an extraction residue dumping box 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to improvements in a beverage extraction device that is a component of a beverage supply device that extracts beverages from raw materials for various beverages including Japanese tea and coffee. It is something.

(Background of the Invention) So-called beverage supply devices, which extract and supply beverages from raw materials for various beverages such as Japanese tea, coffee, black tea, and oolong tea, have conventionally been used not only for the purpose of economically supplying beverages, but also for the purpose of supplying beverages economically. In particular, a type of beverage dispensing device that controls the amount of hot water while monitoring the amount of beverage that comes out of the cup, and dispenses as much or as much beverage as the user desires, integrates the amount of hot water that has been supplied and calculates a fixed amount. The raw materials for brewing beverages are replaced every time hot water is supplied.

This is because the beverage extraction mechanism of the conventional beverage supply device is
No. 3328, No. 56-5523, No. 60-27527
As adopted in this issue, the raw materials are put into a filter shaped like a tea warmer, hot water is supplied from the top of the filter, and the raw materials are strained, just as tea is strained by hand every day. In other words, when extracting a beverage from raw materials in this way, the extraction time for the beverage is short, so the amount of raw materials equivalent to one extraction is Since only a weak drink can be obtained, a method is adopted in which, for example, a large amount of raw material equivalent to 10 drinks is put into the filter at one time, and the raw material is replaced every 10 drinks.

In this way, when extracting and providing a beverage from raw materials without replacing the raw materials with new ones each time a beverage is supplied, it is possible to extract and serve beverages from raw materials without replacing the raw materials with new ones each time a beverage is supplied. , Immediately after replacing the raw materials, a drink that is much richer than the average is extracted, and by the time a certain number of drinks are served or a certain amount of drinks are reached, a drink that is considerably thinner than the average is extracted. The density of the beverage is not constant each time the beverage is served, and the beverage served is either too strong or has a watery odor similar to colored hot water, both of which are undesirable.

In addition, in the case of a tea strainer-shaped brewing container, when discarding the brewed grounds, the brewing grounds are turned upside down and the brewed grounds inside the container are discarded, so the brewed grounds are sometimes not completely discarded and end up at the bottom of the brewing container. There is also the problem that some of the extracted residue remains.

Therefore, each time a beverage is served, the raw material for brewing the beverage is supplied from the raw material supply device to the extraction container in the amount required for one batch, and mixed with the liquid supplied from the water heater in the extraction container to make the beverage. If the operation of discharging the brewed residue from the extraction container to the extracted residue disposal box after extraction can be reliably realized as a series of cycles using a mechanism with a simple structure, a stable quality beverage containing constant beverage components can be produced. Therefore, one of the challenges for beverage dispensing devices has been to economically realize a beverage dispensing device that performs such a series of operations with a simple mechanism.

(Object of the Invention) The first object of the present invention is to solve the above-mentioned problems and to provide a beverage extraction device that can economically extract beverages from raw materials with consistently stable quality using an extremely simple structure. That's true.

A second object of the present invention is to provide a beverage extraction device that can efficiently extract beverages from raw materials.

(Characteristics of the Invention) In order to achieve the above object, the present invention provides a beverage extraction device for extracting a beverage by permeating hot water into a raw material. An extraction container having a convex line as a generatrix and a rotating surface formed by rotating the generatrix by a predetermined angle about the straight line as the main container wall and having an opening opening upward; a rotating shaft rotatably supported coaxially with the axis of the rotating surface; a filter attached to a cutout of the container wall at one end of the extraction container; a scraper slidably fixed to at least the bottom inner surface of the container wall; and an extraction container that rotationally drives the extraction container in a direction in which the filter moves to the lowest position in the shortest distance when supplying and discharging beverages. A drive means is provided, and by means of an extremely simple rotational operation of rotating the extraction container around the rotation axis, separation of the extracted beverage and the brewed grounds, supply of the beverage, and discharge of the brewed grounds are performed. It is characterized by the fact that it is made to do.

The present invention also provides a stirring blade rotatably supported inside the extraction container by a rotation shaft coaxial with the rotation shaft of the extraction container, and a stirring blade driving means for rotationally driving the first stirring blade during beverage extraction. The invention is characterized in that hot water is stirred by the stirring blade in the extraction container during beverage extraction.

(Embodiment of the Invention) FIG. 1 is a front external view of a beverage brewing device 1 which is an embodiment of the present invention.

As shown in FIG. 1, the beverage brewing device 1 of the present invention is comprised of a brewing container 2, a funnel 3, and a box 4 for discarding the brewed liquid.

In the beverage brewing device 1 of the present invention, as shown in FIG.
Into an extraction container 2 having the shape shown in the figure, that is, a hollow cylinder with the circular surfaces at both ends divided into two semicircular shapes, a certain amount of Japanese tea (31) was added using a raw material supply device (described later). coffee,
Beverages are extracted by mixing raw materials for various drinks such as black tea and oolong tea with 31 volumes of hot water using a water heater (described later), and then By rotating the extraction container 2 once, the extracted beverage and the brewed dregs are separated, the extracted beverage is supplied through the funnel 3 to the cup 5 (Fig. 1), and the brewed dregs are discarded without being extracted. - A series of beverage extraction operations are performed so as to discharge the beverage into C box 4 (FIG. 1).

The raw material is supplied to the extraction container 2 from the guide cylinder 6 of the raw material supply device, and the hot water is supplied from the tube 7 of the hot water supply device.

As shown in Fig. 752(a)'-, the extraction container 2 of the beverage extraction device 1 which is an embodiment of the present invention has two openings on a straight line A, a predetermined distance apart, and a container with both ends in contact with the point 8. The surface of rotation formed by rotating the generatrix 180 degrees around the straight line A, using the character-shaped lines 2, E, and he (shown as dotted lines) as 1u lines, that is, the surface of rotation to the line 2. A certain semicircular plane 11
．． 12 and the cylindrical surface 13 which is the rotation surface of the line E is the main volume 2g
It has a wall and an opening 14 that opens upward.

A filter 15 is attached to a part of the columnar surface 13, which is the bottom surface of the extraction container 2, to separate the extracted beverage from the brewed dregs.

As shown in FIG. 12(b) as an example, the filter 15 is provided in such a structure that no convex portion is formed on the internal bottom surface of the extraction container 2.

Further, as shown in FIG. 2(c), the extraction container 2 has a hollow rotating shaft 16 attached thereto as a support point for the extraction container 2, which is coaxial with the straight line A (FIG. 2a). .

Further, inside the extraction container 2, as shown in FIG. 2(c), there are a stirring blade 18 attached to a rotating shaft 17 and a scraper fixed to a fixed shaft 19 that rotatably supports the extraction container 2. 20 are provided. The rotating shaft 17 is inserted into the hollow rotating shaft 16, and the other end is connected to a motor (motor M2 in this embodiment, which will be described later) that rotates the stirring blade L8.

As shown in FIG. 13, the funnel 3 has a structure with an obliquely inclined bottom surface 112, and collects the beverage extracted in the extraction container 2 and separated from the extraction residue by the filter 15, and passes through the hole 21.
Beverage is supplied to the cup 5 (Fig. Wj1) through.

Further, as shown in FIG. 4, the extraction and waste box 4 has a filter 22 attached to its bottom, and as shown in FIG. Since a board 4A such as a punch panel that can drain water is used, the water from the unextracted waste that has accumulated in the waste box 4 passes through the filter 22 and the top plate 23 to the water receiver Ill.
24 and evaporate. Therefore, the extraction residue collected in the extraction residue disposal box 4 will not grow mold or rot.1. Hygienic.

First, the overall configuration and operation of the beverage supply device according to the present invention will be explained.

FIG. 5 is a front external view of the beverage supply device, which is composed of a beverage extraction device 11, a raw material supply device 31, and a hot water supply device 41.

The raw material supply device 31 is a device that feeds only the necessary amount of raw material for the beverage to be extracted and does not send it to the fourth extraction device l.
The raw material stored in 2 is crushed in the crushing part 33, and the crushed raw material is passed through the guide cylinder 6 fixed to the crushing part 33 by the centrifugal force of the rotating blades (not shown) of the crushing part 33, and the crushed raw material is Extraction container 2 of the beverage extraction device l for a certain required amount
supply to.

The purpose of pulverizing raw materials before extraction is to increase extraction efficiency, save on the amount of raw materials used, and shorten extraction time, but when using raw materials that are already powdered, such as matcha. , the crushing mechanism of the crushing section 33 is unnecessary,
Since only centrifugal force is required to send the raw material through the guide tube 6, a propeller or the like is used instead of a rotary blade.

Note that the amount of raw material supplied from the raw material supply device 31 is proportional to the operating time of the motor 34, so by keeping the operating time of the motor 34 constant, a constant amount of raw material can be delivered at all times.

The hot water supply device 41 is a device that sends the necessary amount of hot water to the extraction container 2 of the beverage extraction device 1 to extract a beverage from the raw material supplied from the raw material supply device 31 to the extraction container 2 of the beverage extraction device 1. be.

The main tank 42 has a built-in heater 43 and a temperature regulator 44, and stores the hot water it boils itself at a constant temperature. Hot water in the main tank 42 flows through a tube 45 into a sub-tank 46 having a fixed capacity, which is attached to the lower part of the main tank 42. According to the principle of a balanced siphon, when the water levels of the tube 47 connected to the main tank 42 and the sub-tank 46 match at level h in FIG. Fill up. When the sub-tank 46 is filled with hot water, the compressed air supply machine 50 connected to the sub-tank 46 via the tube 47, the joint 48, and the tube 49 is operated under the control of the control circuit of the beverage supply device, and the sub-tank 46 is filled with hot water. Send compressed air into the tube 51. It is delivered through the hand 52 and the tube 7 to the brewing container 2 of the beverage brewing device l.

As shown in FIG. 5, the sub tank 46 is installed so that its top surface is lower than the bottom surface of the main tank 42, so as long as there is hot water in the main tank 42, the sub tank 46 will always be filled with hot water. There is.

FIG. 6 is a sectional view of the sub-tank 46, and the sub-tank 46 is composed of a sub-tank body 53 and a lid 54. An O-ring 55 is attached to the sub-tank body 53 facing the lid 54, and airtightness is maintained by tightening the lid 54.

As shown in FIG. 6, the sub-tank 46 is equipped with a check valve 56. When hot water from the main tank 42 flows into the sub tank 46, the ball valve 57 is pushed up by the water pressure, so the check valve 56 is released.

In the diametrical direction of the plug 58 screwed into the check valve 56,
Since the strip-shaped stopper 59 is attached, the ball valve 57 does not jump out into the sub-tank body 53. Furthermore, when the compressed air supply device 50 operates and compressed air flows into the sub-tank 46, the ball valve 57 is pressed against the forest-like valve seat 60 of the check valve 56.
The check valve 56 is closed, and the liquid in the sub tank 46 will not flow back into the main tank 42.

The on-off valve 61 (FIG. 5) is kept closed to prevent air pressure from dropping while the compressed air supply 8150 is in operation, and kept open at other times. This is because the sub-tank 46 is evacuated when the main tank 42 flows into the sub-tank 46, so the sub-tank 46 must be released to atmospheric pressure.

(1) of hot water supplied to the extraction vessel 2 through the duplex 7
is approximately proportional to the operating time of the compressed air supply device 50, so by keeping the operating time of the compressed air supply device 50 constant, it is possible to always supply a constant amount of hot water to the extraction container 2 of the beverage extraction device I. In addition, if you want to supply hot water by changing the amount according to the amount of beverage required by the user,
For example, an arbitrary amount of hot water can be supplied by changing the operating time of the compressed air supply device 50 in several stages.

Note that the heater 62 is used to keep hot water in the sub-tank 46 warm.

Next, the extraction operation of the beverage extraction device 1, which is a feature of the present invention, will be explained.

FIG. 7 is a diagram showing the extraction operation of the extraction container 2 of the beverage extraction device 1 which is an embodiment of the present invention.

FIG. 8 is an example of an electric circuit for controlling a beverage brewing device 1 according to an embodiment of the present invention.

In FIG. 7(a), raw material is supplied to the extraction container 2 from the guide tube 6 of the raw material supply device 31 (FIG. 5), and hot water is supplied from the tube 7 of the hot water supply device 4 (FIG. 5), respectively. Beverage extraction is started, but the beverage extraction device 1 first turns on the switch 63 (FIG. 8) and turns on the stirring blade 1.
The motor M2 (Fig. 8) connected to the
The hot water is stirred by a stirring blade 18 as shown in Figure (b).

In FIG. 17(C), the switch 63 is shut off to stop stirring, and the beverage is left as it is for a while to fully extract the beverage and allow the brewed residue to settle at the bottom of the extraction container 2.

Next, after a certain period of time, the switch 64 (FIG. 8) is turned on and the motor Ml connected to the rotation shaft 1G of the extraction container 2 is turned on.
(Fig. 8), and as shown in Fig. 7(d), the cam 6 fixed to the rotating shaft 16 of the extraction container 2 and the extraction field 2;
Rotate 5 slowly.

At this time, the extracted beverage passes through the filter 15, is collected in the funnel 3, and begins to flow into the cup 5 (FIG. 5). At the same time as this operation, the extraction residue that had settled at the bottom of the extraction container 2 is removed from the scraper 2 fixed to the fixed $11119.
Scraped by 0.

In FIG. 7(e), the microswitch 66 and the force l.
65, the microswitch 66 is turned on. Thereafter, switch 64 is shut off. (As shown in Figure 8, the microswitch 66 is connected in parallel to the switch a4, so even if the switch 64 is shut off, the rotation of the extraction container 2 continues.

The rotation of the extraction container 2 progresses and the scraper 20 is removed from the extraction container 2.
When separated from the container wall, the brewed dregs are separated from the scraper 20 by their own weight and fall into the extracted dregs disposal box 4.

When the rotation of the extraction container 2 further progresses and the microswitch 66 separates from the cam 65 in FIG. 7(f), the microswitch 66 is shut off, the motor Ml is stopped, and the rotation of the extraction container 2 is stopped.

The stopping position of the extraction container 2 is determined by the cam 65 as shown in FIG.
), and thereafter, the beverage extraction operation i'j is performed using the operations shown in FIGS. 7(a) to 7(f) as one cycle.

As described above, according to the beverage brewing device 1 of the present invention, a very simple rotation operation in which the extraction container 2 is rotated once by the rotary shaft 16 using the power of a motor or the like can always produce drinks of stable quality in a hygienic manner. It can be extracted and supplied to

Note that the shape of the extraction container 2 is not limited to that shown in Fig. 2(a); as shown in Figs. Any shape as long as it is a convex line of a rotating body is sufficient.

Moreover, the extraction container 2 does not have to be a rotating body of 180 degrees, but the rotation angle may be larger or smaller than 180 degrees, as shown in FIGS. 12 and 13.

Furthermore, in the above-mentioned embodiment, the rotating shaft 16 of the extraction container 2 connected to the power source was made hollow, and a rotating shaft 17 connected to the power source for rotating the stirring blade 18 coaxially therewith was provided. As shown in FIG. 14, the structure may be such that the scraper 20 is fixed and the fixed shaft 19 supporting the extraction container 2 is hollow, and the rotating shaft 17 of the stirring blade 18 is coaxially passed through the fixed shaft 19.

(Effects of the Invention) As explained above, according to the invention of claim 1, in a beverage extraction device that extracts a beverage by permeating hot water into a raw material, both ends touch two points separated by a predetermined distance on a straight line. An extraction container having an opening that opens upward, the main container wall being a rotating surface formed by rotating a downwardly convex line by a predetermined angle around the n11 straight line as an axis; a rotating shaft that rotatably supports the extraction container coaxially with the axis of the rotating surface; a filter attached to a cutout of the container wall at one end of the extraction container; A scraper is slidably fixed to at least the bottom inner surface of the container wall of the extraction container, and the extraction container is rotationally driven in a direction in which the filter moves to the lowest position in the shortest distance during beverage supply and brewed grounds discharge. An extraction container driving means is provided, whereby the extracted beverage and the brewed grounds are separated, the beverage is supplied, and the brewed grounds are discharged by a very simple rotational operation of rotating the extraction container once around the rotation axis. By doing so, it is possible to provide a beverage extraction device that has an extremely simple structure, is economical, and always extracts beverages with stable quality from raw materials.

Further, according to the invention of claim 2, a stirring blade rotatably supported inside the extraction container by a rotation shaft coaxial with the rotation shaft of the extraction container, and a stirring blade that rotationally drives the first stirring blade during beverage extraction. A blade driving means is provided, and hot water is stirred by the stirring blade in the extraction container during beverage extraction, so that a beverage extraction device that efficiently extracts beverages from raw materials with an extremely simple structure is provided. can be provided.

[Brief explanation of the drawing]

FIG. 1 is a front external view of a beverage brewing device according to an embodiment of the present invention, FIG. 2(a) is a perspective view of a single brewing container according to an embodiment of the present invention, and FIG. 2(b) is a filter thereof. FIG. 2(C) is a perspective view of the extraction vessel assembly, FIG. 3 is a perspective view and a plan view of a funnel in an embodiment of the present invention, and FIG.
The figure is a perspective view of a brewed waste disposal box according to an embodiment of the present invention, FIG. FIG. 7 is a cross-sectional view of a sub-tank of a water heater used with the invention; FIG. 7 is a diagram showing an extraction operation in an embodiment of the invention; FIG. 8 is a circuit diagram of a motor control circuit in an embodiment of the invention; ~1
3 is a front view and a side view showing another example of a single extraction container according to the present invention, and FIG. 14 is a perspective view showing another example of an extraction container assembly according to the present invention. 186. Beverage extraction device, 211. Extraction vessel, 3 funnel, 4
00. Extraction waste disposal box, 11-1312. A surface forming the main container wall of the extraction container 2, 14, an opening, 15.
,, Filter, 16~+7. ,,rotation axis,18. ,
, Mi stirring blade, 19. . Fixed axis, 20°1. Scraper, 63, 64° switch, 65. ,, Cam, 66,... Micro switch, I11. Straight line, b, c 1.1 point, two, ho, he 0. ,
line. Patent applicant Osaki Electric Industry Co., Ltd. Agent Minoru Nakamura Figure 2 (a) Figure 6 Figure 7 (a) (b) (C) Figure 7 (f) Figure 8

Claims (2)

[Claims] (1) In a beverage extraction device that extracts a beverage by infiltrating raw materials with hot water, the generatrix is a downwardly convex line whose ends touch two points separated by a predetermined distance on a straight line. an extraction container having a rotating surface formed by angular rotation as a main container wall and having an opening that opens upward; the extraction container being coaxial with the axis of the rotating surface;
a rotating shaft rotatably supported; a filter attached to a cutout of the container wall at one end of the extraction container; The invention is characterized in that it is provided with a scraper that is fixed to move, and an extraction container driving means that rotationally drives the extraction container in a direction in which the filter moves to the lowest position in the shortest distance when supplying the beverage and discharging the brewed dregs. Beverage extraction equipment. (2) A stirring blade rotatably supported inside the extraction container by a rotation shaft coaxial with the rotation shaft of the extraction container, and a stirring blade driving means for rotationally driving the first stirring blade during beverage extraction. The beverage brewing device according to claim 1, characterized in that: