JPH0716470B2 - Extractor - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for mixing a powder raw material and hot water to extract a solution.

(B) Conventional Technique As such an extraction device, a device is well known in which coffee powder raw materials ground with coffee beans are mixed with hot water and brewed to extract the extracted liquid. As described above, in order to dissolve a certain amount of powder raw material with a certain amount of hot water, a good effect cannot be obtained in a stationary state where hot water and powder raw material are simply mixed, and stirring is required. Stirring can be considered as a relative motion between hot water and powder raw material, but in Japanese Patent Publication No. Sho 56-35234, a piston is arranged under the mixing chamber of hot water and powder raw material through a filter, and the piston is moved up to mix. It is disclosed that air is introduced into the chamber to stir. However, in this case, the relative movement between the hot and cold water and the powder raw material is determined by the amount of air pushed out from the piston, so the stirring effect cannot be varied, and when the temperature of the hot water is low or the particle size of the powder raw material is coarse, it is not sufficiently stirred. .

Further, according to the publication, the solution is extracted by generating a negative pressure in the mixing chamber when the piston descends, but this extraction effect is also determined by the volume of the piston, and extraction may not be sufficient. Moreover, in the case of the piston, there is a drawback that extraction cannot be completed completely if there is air leakage due to the gap between the cylinder and the piston.

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

From the above point of view, the present invention provides an apparatus in which arbitrary stirring and extraction can be set by a simple configuration and which can be easily controlled.

(D) Means for Solving the Problems To explain the basic configuration of the present invention, the funnel (4) for introducing the powder raw material and the hot water from the upper opening and discharging the mixed liquid from the lower outlet, and the funnel at the outlet. An extraction chamber (8) communicating with the filter, a filter (25) that is permeable to gas and liquid and forms the bottom surface of the extraction chamber (8), an outlet is opened during agitation, and an outlet during extraction A brewing chamber valve (9) that closes the beverage container, a beverage receiver (22) that is in close contact with the brewing chamber via the filter at least during stirring and brewing, and pressurized air from above the filter into the brewing chamber. An extraction air tube (20) to be introduced, an agitation air tube (29) to introduce pressurized air into the extraction chamber from below the filter, and the beverage receiver for discharging the extraction liquid from the extraction chamber. Beverage tube (2 7), an air pump (44) for introducing pressurized air into the extraction air tube and the agitation air tube, and a tube provided in each of the air tube and the beverage tube and closed by crushing the tube Actuating member for switching to the state (31)
(32) (33), and energizes the corresponding operating member so that only the stirring air tube is opened at the time of stirring, and the extraction air tube and the beverage tube are opened at the time of extraction And a control cam device (37) (38) (39) for urging the operating member.

(E) Function During stirring, the compressed air from the air pump is introduced into the extraction chamber from below the filter to mix the powder raw material and the hot water, and during extraction, the compressed air from the air pump is introduced from above the filter to mix the liquid mixture into the filter. The extract is extracted into a beverage tube after being filtered.

(F) Example FIG. 1 is a block diagram of an apparatus according to the present invention. (1) is a raw material supply device for supplying a predetermined amount of coffee powder raw material for each sales operation, (2) is a raw material shooter, and (3) ) Is a hot water supply nozzle for pouring hot water from a hot water supply tank (not shown), and (4) is a funnel for mixing the powder raw material introduced from the upper opening (5) and the hot water. Then, in the lower part of the funnel (4), an outlet (6) having a diameter smaller than that of the upper opening (5) is opened, and an inclined portion (7) is formed toward the outlet (6). (8) is an extraction chamber, and the take-out port (6) of the funnel (4)
The communication is controlled by the extraction valve (9). Then, a pin (15) is attached to the outer wall of the extraction chamber (8) and is locked to one end of the lever (14).
The other end is pivotally supported on the shaft (16), and a constant pressure device (19) having a spring (18) is arranged in the central portion. (17) is an extraction chamber drive plate that moves downward by the rotation of the extraction chamber drive cam (16) by a predetermined angle to press the constant pressure device (19), and has a shaft (40) at one end. I have it. The extraction chamber drive plate (17) is biased upward by the spring (61) mounted on the substrate (60). (10) is
A rotatable lever whose center is supported by a shaft (40) that moves in the vertical direction with the movement of the extraction chamber drive plate (17), and an extraction chamber valve (9) via a pin (62) at one end. Connect
The other end is provided with a movable pin (63). Reference numeral (43) is an extraction valve drive plate which moves downward by rotation of the extraction chamber valve drive cam (44) at a predetermined angle, and one end of which is provided with a constant pressure device (42) having a spring (41). Lever (1
0) is connected to the end of the movable pin (63) side. The extraction chamber valve drive plate (43) is biased upward by a spring (64) attached to the extraction chamber drive plate (17).
When the extraction chamber valve drive plate (43) moves downward, the extraction chamber valve (9) rises and closes the outlet (6), but the extraction chamber valve (9) is connected to the pin (62) by a connecting shaft. (43)
Further, the roller (11) is provided, and the vertical movement of the roller (11) is restricted by sliding the guide plate (12). Further, an air hole (21) connected to an air tube (20) for injecting extraction air is opened in the upper part of the extraction chamber (8). (22) is a beverage receiver, peripheral wall extraction device (8)
A ring-shaped gasket (24) is embedded in the surface facing to the extraction chamber (8), and the lower end of the peripheral wall of the extraction chamber (8) is urged by the extraction chamber drive plate (17) and a paper filter (25) is sandwiched between the gasket ( Adhere to 24). And a spout (28) connected to the beverage tube (27) is opened at the bottom of the beverage receiver (22), and further connected at the side to an air tube (29) for injecting stirring air. The air hole (30) is open. The air tubes (20), (29) and the beverage tube (27) are made of silicone rubber, and their opening and closing are controlled by pressing the operating members (31), (32), (33). Each of the actuating members (31), (32), (33) has one end rotatably supported by the shafts (34), (35), (36) and the other end bent so that the actuating portion ( 31A), (32A), (33A)
And corresponding cams (37), (38), (39)
Rotation causes the actuating members (31), (32), (33) to rotate to close the tubes (20), (29), (27). (44)
Is connected to air tubes (20), (29) through a manifold (45) with an air pump. (46) is a drive motor, and the drive shaft (47) has cams (16), (37), (38),
(44) is mounted, and a driven shaft (48) that is linked with the drive shaft (47) by a set of toothed pulleys (49), (50) and a toothed belt (51) with a reduction ratio of 1: 1. ) Is equipped with a cam (39). (51) and (52) are raw material delivery devices that supply a predetermined amount of sugar and milk for each sales operation, (53) is a mixing ball that mixes sugar and milk into the coffee introduced through the beverage tube (27), (55) is a selling cup supplied from a cup sending mechanism (not shown) for each selling operation.

The operation of the above configuration will be described with reference to the cam operation timing chart of FIG. In the standby position, the cam (3
7), (38) and (39) are actuating members (31), (32),
The air tubes (20) and (29) and the beverage tube (27) are not acting on the (33) and are in an open state. On the other hand, the cam (16) biases the dispensing chamber drive plate (17) downward, and the lower part of the dispensing chamber (8) sandwiches the paper filter (25) and contacts the beverage receiver (22). . The extraction chamber valve (9) opens the outlet (6). The state of this standby position is shown in FIG.

When the drive motor (46) operates and each cam rotates by 65 degrees, the air agitation position is reached. At this time, the extraction chamber drive plate (17) is pushed down via the cam follower (16A) of the cam (16), and the pressing force is transmitted to the constant pressure device (19) arranged on the lever (14). Therefore, since the lever (14) rotates counterclockwise about the shaft (16) as a fulcrum, the brewing chamber (8) is urged toward the beverage receiver (22), and the paper filter (25) is caught in the gasket (8). Close to 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. The extraction chamber valve drive plate (43) is set by the cam (44) so as to move downward by 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. Further, when the cam (38) rotates by this angle, the actuating member (32) does not rotate and the air tube (29) remains open. On the other hand, when the cams (37) and (39) are rotated by this angle, the actuating members (31) and (33) are biased and rotated, respectively, and the air tube (20) and the beverage tube (27) are It is crushed and put in a closed state. The state of this air agitation position is shown in FIG. In this state, when a required amount of hot water and coffee powder are supplied to the funnel (4), the coffee powder is poured into the extraction chamber (8) by the hot water through the outlet (6). When the air pump (44) is operated at the same time as the supply of hot water and coffee powder, the air tube (20) is closed at this time, and pressurized air is delivered from the air tube (29). ) Is also closed, pressurized air is introduced into the extraction chamber (8) from below the paper filter (25) and blows through the outlet (6) to the funnel (4). Therefore, hot water and coffee powder are mixed and stirred by the passage of air in the chamber of the extraction chamber (8), but effective stirring (air agitation) is achieved by arbitrarily setting the air delivery time.

Then, the drive motor (4
6) operates again, and when each cam rotates 130 degrees, it becomes the extraction position. At this time, since the position of the cam line of the cam (16) is A and does not change from the air agitation position, the brewing chamber drive plate (17) continues to bring the brewing chamber (8) into close contact with the beverage receiver (22). . Further, since the cam line of the cam (44) is higher than the cam line of the cam (16) by B, the extraction chamber valve drive plate (43) is pushed downward by the cam follower (44A) of the cam (44). It descends relatively to the extraction chamber drive plate (17). Accordingly, the clockwise rotation of the lever (10) about the shaft (40) as a fulcrum moves the extraction chamber valve (9) upward to close the outlet (6). When the cam (38) rotates by this angle, the actuating member (32) is urged to rotate, and the air tube (29) is crushed by the actuating portion (32A) to be in the closed state. Further, when the cams (37) and (39) rotate by this angle, the air tubes (20) and the beverage tubes (27) are released in order to release the bias of the operating members (31) and (33).
Switch from the closed state to the open state, respectively. The state of this extraction position is shown in FIG. In this state, the compressed air from the air pump (44) is delivered from the air tube (20), but the compressed air is extracted because the extraction port (6) is closed by the extraction chamber valve (9). The mixed liquid of coffee powder and hot water in the chamber (8) is pushed out toward the beverage tube (27). Therefore, the dissolved solution of coffee powder is filtered through the paper filter (25) and introduced into the beverage tube (27) at the beverage receiver (22) to be mixed with the mixing ball (53).
Sent to. In the mixing bowl (53), coffee liquid is mixed with cream and sugar and poured into the cup (55). Then, when the coffee liquid is extracted from the extraction chamber (8), the coffee powder from which the components are extracted remains as dust on the upper surface of the paper filter (25).

When the coffee liquid is thus extracted from the extraction chamber (8) and sent out through the beverage tube (27), the drive motor (46) is driven until each cam returns to the standby position. During the drive period of the drive motor (46), the cams (16) and (14) are respectively the extraction chamber drive plate (17) and the extraction chamber valve drive plate (43).
In order to release the bias of the extraction chamber drive plate (17) and the extraction chamber valve drive plate (43), the springs (61) and (64) respectively.
Is pulled up by. At this time, the relative positional relationship between the extraction chamber drive plate (17) and the extraction chamber valve drive plate (43) is such that the extraction chamber valve (9) is open. Lever (14)
Is urged by the spring (65) by the upward movement of the extraction chamber drive plate (17) and rotates clockwise about the shaft (16). Therefore, the extraction chamber (8) is pulled up by a certain distance to the state shown in FIG. On the other hand, the cam (38) continues to be in the extraction position halfway. Further, in synchronization with this drive period of the drive motor (46), the paper filter feeding device (not shown) moves the paper filter (2
5) is fed for a certain length, and the portion on which the waste is placed is removed from the extraction chamber (8). Then, when each cam rotates 360 degrees, the drive motor (46) stops, and the extraction chamber (8) returns to the standby state in which the paper filter (25) is held in contact with the beverage receiver (22).

(G) Effect of the Invention According to the present invention, the relative motion of the powder raw material and the hot water can be adjusted by changing the time for introducing the pressurized air from below the filter into the extraction chamber. Therefore, it can be arbitrarily set depending on the temperature of the hot water or the particle size of the powder raw material so as to obtain the optimum stirring effect. Then, since compressed air is introduced into the extraction chamber from above the filter for extraction, sufficient extraction can be performed by introducing compressed air even after the extraction liquid is taken out. Further, the air tube for introducing the pressurized air and the beverage tube for extracting the extracted liquid into the beverage receiver are controlled by the cam device so as to switch to the closed state by being crushed by the corresponding operating members. Effective stirring and extraction can be performed with a simple structure.

[Brief description of drawings]

FIG. 1 is a block diagram of an extracting device according to the present invention, FIG. 2 is a timing chart showing a cam operation, FIG. 3 is a diagram showing a standby state, FIG. 4 is a diagram showing a stirring state, and FIG. 5 is an extracting state. FIG. 6 is a view showing a state in which the extraction chamber is pulled up, and FIG. 7 is a side view of the apparatus. (1) …… Material supply device, (4) …… Funnel, (8)
…… Extractor, (9) …… Extraction chamber valve, (20) …… Extraction air tube, (29) …… Stirring air tube,
(27) …… Beverage tube, (31) (32) (33) …… Actuating member, (37) (38) (39) …… Cam device.

Claims (1)

[Claims] 1. A raw material supply device for supplying a predetermined amount of powder raw material, a hot water supply mechanism for supplying a predetermined amount of hot water, and the powder raw material and the hot water are introduced from an upper opening to have a diameter smaller than that of the upper opening. A funnel that forms an outlet, an extraction chamber that communicates with the funnel at the outlet and into which a mixed liquid is introduced, and a filter that is permeable to gas and liquid and forms the bottom surface of the extraction chamber, An extraction chamber valve that opens the outlet during stirring and closes the outlet during extraction, a beverage receiver that is in close contact with the extraction chamber through the filter at least during stirring and during extraction, and above the filter. An extraction air tube for introducing pressurized air into the extraction chamber, an agitation air tube for introducing pressurized air into the extraction chamber from below the filter, and a liquid extract from the extraction chamber. A beverage tube provided in the beverage receiver, an air pump that introduces pressurized air into the extraction air tube and the stirring air tube, and a crushed tube that is provided in each of the air tube and the beverage tube and is in an open state The operation member that is switched to the closed state by pressing the corresponding operation member so that only the stirring air tube is opened during stirring, and the extraction air tube and the beverage tube are opened during extraction. And a control cam device for urging the actuating member.