JPH0531413B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an apparatus for mixing powdered raw materials and hot water to extract a solution.

(B) Prior Art As such an extraction device, a well-known device is one that mixes ground coffee beans and powdered coffee with hot water, decocts the mixture, and extracts the resulting liquid. In order to dissolve a certain amount of the powder raw material in a certain amount of hot water in this manner, stirring is required since a good effect cannot be obtained by simply mixing the hot water and the powder raw material in a static state. Stirring can be thought of as the relative movement between hot water and powdered raw materials, but in Japanese Patent Publication No. 56-35234, a piston is placed at the bottom of a mixing chamber for hot water and powdered raw materials through a filter, and the rising of the piston causes mixing. It is disclosed that air is introduced into the chamber for stirring. However, in this case, the relative motion between the hot water and the powdered raw material is determined by the amount of air pushed out by the piston, so the stirring effect cannot be varied. is not stirred.

According to the publication, extraction of the dissolved solution is carried out by generating negative pressure in the mixing chamber by lowering the piston, but this extraction effect also depends on the capacity of the piston, and the extraction may not be sufficient.

(c) Problems to be Solved by the Invention As described above, the conventional technology has the drawback that stirring and extraction are determined by the capacity of the piston.

In view of the above points, the present invention provides an extraction device that can effectively perform stirring and extraction.

(d) Means for Solving Problems To explain the basic configuration of the present invention, there is a funnel 4 into which powdered raw materials and hot water are introduced from an upper opening and a mixed liquid is discharged from a lower outlet, and a funnel 4 which is connected to a funnel at the outlet. An extraction chamber 8 in communication with a filter 2 that is permeable to gas and liquid and forms the bottom of the extraction chamber.
5, an extraction chamber valve 9 that opens the outlet during stirring and closes the outlet during extraction; means 31 for stirring the mixed liquid by introducing pressurized air into the extraction chamber from below the filter during stirring; and means 32 for extracting the mixed liquid through the filter by introducing pressurized air into the extraction chamber from above the filter.

(E) Action The powdered raw material and hot water are stirred in the extraction chamber by the flow of air through the filter from below, and the mixed liquid is filtered by the filter by air pressure from above to the filter, and the extract is extracted.

(F) Embodiment FIG. 1 is a block diagram of an apparatus according to the present invention.
2 is a raw material supply device that supplies a predetermined amount of coffee powder raw material for each sales operation; 2 is a raw material shoot; 3 is a hot water nozzle that pours hot water from a hot water tank (not shown);
4 is a funnel for mixing the powder raw material and hot water introduced from the upper opening 5. As shown in FIG. 7, an outlet 6 having a smaller diameter than the upper opening 5 is opened in the lower part of the funnel 4, and an inclined part 7 is formed toward the outlet 6. 8 is the extraction room,
It is connected to the outlet 6 of the funnel 4, and communication is controlled by an extraction chamber valve 9. And extraction chamber 8
A pin 15 is attached to the outer wall of the lever 14, which is fixed to one end of the lever 14. The other end of the lever 14 is pivotally supported by a shaft 36, and a constant pressure device 19 having a spring 18 is mounted in the center of the lever 14. It is set up. Reference numeral 17 denotes an extraction chamber drive plate that moves downward to press the constant pressure device 19 by rotation of the extraction chamber drive cam 16 at a predetermined angle, and is provided with a shaft 40 at one end. The extraction chamber drive plate 17 is urged upward by a spring 51 attached to the base plate 50. 10 is
It is a rotatable lever whose central part is supported by a shaft 40 that moves up and down as the extraction chamber drive plate 17 moves.One end is connected to the extraction chamber valve 9 via a pin 52, and the other end is connected to the extraction chamber valve 9 via a pin 52. A movable pin 53 is provided.
Reference numeral 43 denotes a brewing chamber valve driving plate that moves downward as the brewing chamber valve driving cam 44 rotates by a predetermined angle, and one end is connected to the movable pin 53 side of the lever 10 via a constant pressure device 42 having a spring 41. is connected to the end of the In addition, the extraction chamber valve drive plate 43
is the spring 5 attached to the extraction chamber drive plate 17.
4, it is urged upward. When the extraction chamber valve drive plate 43 moves downward, the extraction chamber valve 9 rises and closes the extraction port 6, but the extraction chamber valve 9 is equipped with a roller 11 on a connecting shaft 43 with a pin 52. As the roller 11 slides on the guide plate 12, vertical movement is restricted. Further, an air hole 21 is opened in the upper part of the extraction chamber 8, and an air tube 20 is passed through the air hole 21 and connected to a pump 32. In this example, a pump 32 is used as a means for introducing pressurized air into the extraction chamber 8 to extract the extract. 2
Reference numeral 2 denotes a beverage receptacle, and an annular gasket 24 is buried in the surface of the peripheral wall 23 facing the extraction device 8 . Scissor and attach tightly to gasket 24. A spout 28 connected to a beverage tube 27 is opened at the bottom of the beverage receiver 22, and an air hole 30 is opened at the side, through which an air tube 29 is passed and connected to a pump 31. In this example, a pump 31 is used as a means for introducing pressurized air into the extraction chamber 8 from below the filter 25 and stirring the liquid mixture. Beverage tube 2
7 is made of silicone rubber, and its opening and closing are controlled by pressing the operating member 34. Actuation member 34
has one end rotatably supported on a shaft 35 and the other end bent to form an actuating portion 34A, and when the cam 37 rotates, the actuating member 34 rotates to close the beverage tube 27. . 46 is a drive motor, and the drive shaft 47 is equipped with cams 16 and 44, and is driven by a pair of toothed pulleys 49 and 55 with a reduction ratio of 1:1 and a toothed belt 56.
A cam 37 is attached to a driven shaft 48 that interlocks with the cam 37. 57 and 58 are a predetermined amount of sugar for each sales operation;
59 is a mixing bowl that mixes sugar and milk into the coffee introduced through the beverage tube 27; 60 is a vending cup that is fed from a cup feeding mechanism (not shown) for each vending operation.

The operation of the above configuration will be explained with reference to FIG. In the standby position, the cam 37 does not act on the actuating member 34 and the beverage tube 27 is in the open position. On the other hand, the cam 16 urges the brewing chamber drive plate 17 downward, and the lower part of the brewing chamber 8 is in contact with the beverage receiver 22 with the paper filter 25 sandwiched therebetween. The extraction chamber valve 9 opens the extraction port 6. The state of this standby position is shown in FIG.

Then, the drive motor 46 operates, and each cam 65
When rotated once, it is in the air agitation position. At this time, the extraction chamber drive plate 17 is pushed down via the cam follower 16A of the cam 16, and the lever 14
The pressurizing force is transmitted to a constant pressurizing device 19 disposed at. Therefore, since the lever 14 rotates counterclockwise about the shaft 36, the extraction chamber 8 is urged toward the beverage receptacle 22, pinching the paper filter 25 and coming into close contact with the gasket 24. At this time, when the extraction chamber 8 moves downward, the lever 14 is also pulled by the extraction chamber drive plate 17 and moves downward by the same distance. And the extraction chamber valve drive plate 43 is
The cam 44 is set to move downward the same distance as the extraction chamber drive plate 17. Therefore, even if the extraction chamber 8 moves, the relative positional relationship with the extraction chamber valve 9 does not change, and the outlet 6 remains open.
This air agitation position is shown in FIG. In this state, when the required amount of hot water and coffee powder are supplied to the funnel 4, the coffee powder flows through the inclined portion 7 by the hot water and is poured into the extraction chamber 8 through the outlet 6. When the air pump 31 is activated at the same time as hot water and coffee powder are supplied, pressurized air is sent out from the air tube 29, but since the beverage tube 27 is closed, the pressurized air is sent from below the paper filter 25 to the extraction chamber. 8 and blows through the outlet 6 into the funnel 4. Therefore, hot water and coffee powder are mixed and agitated by the passage of air in the extraction chamber 8, but effective agitation (air agitation) can be achieved by arbitrarily setting the air delivery time. .

Then, after the set time for stirring has elapsed, the drive motor 46 operates again, and each cam rotates 130 degrees to reach the extraction position. At this time, since the position of the cam line of the cam 16 is A, which is the same as the air agitation position, the brewing chamber drive plate 17 continues to bring the brewing chamber 8 into close contact with the beverage receptacle 22. Also cam 4
Since the cam line of cam 4 is higher than the cam line of cam 16 by the amount B, the extraction chamber valve drive plate 43 is higher than the cam line of cam 16.
It is pushed down by the cam follower 44A of No. 4, and descends relative to the extraction chamber drive plate 17. Therefore, by rotating the lever 10 clockwise about the shaft 40, the extraction chamber valve 9 moves upward and closes the outlet 6. Also, when the cam 37 rotates through this angle, it releases the biasing of the actuating member 34, thereby switching the beverage tube 27 from the closed state to the open state. The state of this extraction position is shown in FIG. When the pump 32 is operated in this state, pressurized air is sent out from the air tube 20, but since the outlet 6 is closed by the extraction chamber valve 9, the pressurized air is transferred to the coffee powder in the extraction chamber 8. The mixture of water and hot water is forced out toward the beverage tube 27. The coffee powder solution is thus filtered through the paper filter 25 and introduced into the beverage tube 27 at the beverage receiver 22 and delivered to the mixing bowl 59 . Mixing bowl 59 mixes cream and sugar into the coffee liquid and makes cup 6.
Pour into 0. When the coffee liquid is extracted from the extraction chamber 8, coffee powder from which its components have been extracted remains as residue on the upper surface of the paper filter 25.

When the coffee liquid is thus extracted from the brewing chamber 8 and delivered through the beverage tube 27, the drive motor 46 is driven until the respective cam returns to its standby position. During this drive period of the drive motor 46, the cams 16 and 14 release the biasing force of the brewing chamber drive plate 17 and the brewing chamber valve drive plate 43, respectively, so that the brewing chamber drive plate 17 and the brewing chamber valve drive plate 43 are moved by springs, respectively. 51 and 54. At this time, the relative positional relationship between the extraction chamber drive plate 17 and the extraction valve drive plate 43 is such that the extraction chamber valve 9 is in an open state. Further, the lever 14 is biased by the spring 61 due to the upward movement of the extraction chamber drive plate 17, and rotates clockwise about the shaft 36 as a fulcrum. Therefore, the extraction chamber 8 is pulled upwards by a certain distance and becomes the state shown in FIG. Also, the drive motor 4
6, a paper filter feeding device (not shown) feeds the paper filter 25 by a certain length to remove the portion on which the waste is placed from the extraction chamber 8. When each cam rotates 360 degrees, the drive motor 46 stops, and the brewing chamber 8 returns to a standby state in which it holds the paper filter 25 and contacts the beverage receiver 22.

(G) Effects of the Invention According to the present invention, the relative movement between the powdered raw material and the hot water can be adjusted by changing the time for introducing pressurized air into the extraction chamber from below the filter. Therefore, it can be arbitrarily set to obtain the optimum stirring effect depending on the temperature of the hot water or the particle size of the powder raw material. Since pressurized air is introduced into the extraction chamber from above the filter for extraction, sufficient extraction can be carried out by introducing pressurized air even after extracting the extract.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an extraction device according to the present invention, and FIG.
3 is a diagram showing the standby state, FIG. 4 is a diagram showing the air agitation state, FIG. 5 is a diagram showing the extraction state, FIG. 6 is a diagram showing the filter set state, FIG. 7 shows a side view of the device. 1...Raw material supply device, 4...Fannel, 8...
Extraction chamber, 9...extraction chamber valve, 31...stirring means, 32...extraction means.

Claims (1)

[Claims] 1. A raw material supply device that supplies a predetermined amount of powder raw material, a hot water supply mechanism that supplies a predetermined amount of hot water, and an outlet into which the powder raw material and hot water are introduced from an upper opening and which has a smaller diameter than the upper opening. an extraction chamber that communicates with the funnel through the outlet and into which the mixed liquid is introduced; a filter that is permeable to gas and liquid and forms the bottom of the extraction chamber; an extraction chamber valve having an open outlet and closing the outlet during extraction; a means for introducing pressurized air into the extraction chamber from below the filter during stirring to stir the mixed liquid; an extraction device comprising means for introducing pressurized air into the extraction chamber from above to extract the mixed liquid through the filter.