JPH0529446B2 - - Google Patents

Description

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

(b) Prior Art As such an extraction device, there is a technique disclosed in Japanese Patent Publication No. 35234/1983. In this system, a piston is placed at the bottom of a mixing chamber for hot water and powder raw materials through a filter, and as the piston rises, air is introduced into the mixing chamber for stirring, and as the piston descends, negative pressure is generated in the mixing chamber. Extraction is performed using Therefore, since the extraction device performs extraction by stirring and extruding hot water and powder raw materials, it takes a relatively long time to supply the beverage, and the temperature of the beverage decreases due to the introduction of air.

(c) Problems to be Solved by the Invention As described above, the brewing device had a problem in that the temperature of the beverage was low.

In view of the above points, the present invention provides a beverage brewing device that can prevent the temperature of the beverage from decreasing.

(d) Means for Solving the Problems The present invention provides an extraction chamber into which powder raw materials and hot water are introduced, a filter that is permeable to gas and liquid and forms the bottom of the extraction chamber, and It consists of a steam generator that introduces pressurized steam into the room.

(E) Effect With the above configuration, when the extraction chamber is opened to the atmosphere and pressurized steam is introduced, the mixed liquid in the extraction chamber is stirred, and when the pressurized steam is introduced with the extraction chamber sealed, the beverage is extracted through the filter. .

(F) Example Figure 1 shows a side view of the extraction device according to the present invention, in which 1 is an extraction chamber, an upper chamber 3 into which powdered raw materials and hot water are introduced and stirs the mixed liquid, and an upper chamber 3 in which a beverage is extracted. It consists of a lower chamber 5. The upper chamber 3 and the lower chamber 5 are connected through a communication port 4, and communication is controlled by a valve device 7. A pin 12 is attached to the outer wall of the extraction chamber 1 and is locked to one end of a yoke 13. A pressure device 16 is provided. Extraction chamber drive plate 1
7 is in contact with the cam 18 via a cam follower 19, and moves downward to press the constant pressure device 16 when the cam 18 rotates at a predetermined angle, and is provided with a pin 20 at one end. . Further, the extraction chamber drive plate 17 is always urged upward by a spring (not shown). The lever 21 is a pin 2 that moves vertically as the extraction chamber drive plate 17 moves.
The central part is supported by 0, and a pin 22 is attached to one end.
is connected to the valve device 7 via a connecting shaft 23, and the other end is connected to a movable pin 24. The valve drive plate 25 is configured to come into contact with a cam 27 via a cam follower 26 and move downward as the cam 27 rotates through a predetermined angle, and one end is connected to the movable pin 24 via an adjustment nut 28. are doing. This valve drive plate 25 is also constantly urged upward by a spring (not shown).
With this configuration, when the valve drive plate 25 moves downward and the lever 21 rotates clockwise about the pin 20, the valve device 7 rises and closes the communication port 4, but at this time, the connection shaft 23 The provided rollers 29 slide on the guide rails 30 to guide movement in the vertical direction. The lower chamber 5 has a hole 29 formed in its side and is connected to a steam generator 30 through a tube 8. The steam generator 30 is composed of, for example, an electric boiler with a generated pressure gauge pressure of about 1 Kg/cm ² . A pressure regulator 31 and a solenoid valve 36 are connected to the tube 8 . A filter 6, which forms the bottom surface of the extraction chamber 5, is provided at the upper opening of the beverage receiver 32. A gasket 33 is disposed annularly around the opening of the beverage receiver 32, and the lower end of the brewing chamber 1 is brought into close contact with the gasket 33 by the urging of the brewing chamber drive plate 17. Further, a pouring hole 35 connected to a beverage tube 34 is opened at the bottom of the beverage receiver 32 . The beverage tube 34 is made of, for example, silicone rubber, which has excellent resilience, and its opening and closing are controlled by pressing the pressure plate 37. The pressing plate 37 is rotatably supported at one end, and is urged by the rotation of the cam 39 to rotate. The cams 18 and 27 are attached to the drive shaft 41 of the deceleration motor 40, and the cam 39
is attached to the driven shaft 42. and driven shaft 4
2 is a pair of pulleys 43, 4 with a reduction ratio of 1:1.
4 and a timing belt 45 to interlock with the drive shaft 41. The wiper 46 is configured to reciprocate over the filter surface of the beverage tray 32 by means of a crank cam 49 attached to a drive shaft 48 of a motor 47 to wipe away raw material scum after component extraction. That is, the other end of the link 50, which has the wiper 46 attached to one end, is connected by a pin 54 to a link 52 which rotates about a shaft 53 by a connecting rod 51 connected to a crank cam 49.
As the link 52 rotates due to the rotation, the link 50 moves back and forth. The steam from the steam generator 30 is also adapted to heat the surface of the beverage tube 34 through the tube 38 so that the brewed beverage does not cool down while passing through the beverage tube 34. Therefore, the pressure regulator 31 is also connected to the tube 38.
A and a solenoid valve 36A are attached.

The operation of the above configuration will be explained. 5 shows the positional relationship between the cam 18 and the cam follower 19, and FIG. 6 shows the positional relationship between the cam 27 and the cam follower 26. In the standby position, the cam 39
is not acting on the pressing plate 37 and the beverage tube 34
is in the open state. Also, the cam 18 is the cam follower 1
9 urges the extraction chamber drive plate 17 downward. Therefore, the yoke 13 is urged to rotate counterclockwise by the pressing force from the extraction chamber drive plate 17 applied to the constant pressure device 16, and the lower end of the extraction chamber 1 is rotated as shown in FIG. , it is in a state just before coming into contact with the gasket 33.

In this standby state, the deceleration motor 40 is driven by a predetermined extraction signal, and stops when each cam rotates by a predetermined angle and reaches the stirring position. At this stirring position, the brewing chamber drive plate 17 is further pushed down by the cam 18, and the brewing chamber 1 is brought into close contact with the beverage receptacle 32. on the other hand,
When the valve drive plate 25 is urged downward via the cam follower 26 by the rotation of the cam 27, the lever 21 rotates clockwise about the pin 20, and the valve device 7 closes the communication port 4. move upwards. In this way, the deceleration motor 40
When the cams 18 and 27 are rotated to the stirring position by the drive of the extraction chamber drive plate 17 and the valve drive plate 25
are moved downward, but by setting the amount of movement of the valve drive plate 25 to be larger than the amount of movement of the extraction chamber drive plate 17, the lever 21 is rotated clockwise. Further, at this time, the valve device 7 is closed only to the extent that it does not come into contact with the rubber ring 60 provided around the communication port 4. That is, the communication port 4 is closed by the valve device 7 in a half-open state where the gap 61 is formed.
The rotation of the cam 39 causes the pressure plate 37 to rotate clockwise, thereby closing the beverage tube 34. The above state is the stirring state shown in FIG. 2, and after a predetermined period of time has elapsed since the generation of the extraction signal, the solenoid valve 36 is opened to introduce pressurized steam from the steam generator 30 into the extraction chamber 5. At the same time, the powder raw material and hot water are introduced into the receiving part 3A, and the powder raw material is introduced into the upper chamber 3 while being mixed with the hot water. However, by opening the solenoid valve 36A, the lower chamber 5
Since the beverage tube 34 is closed, the pressurized steam introduced therein blows through the gap 61 into the upper chamber 3 which is open to the atmosphere. Therefore, the liquid mixture in the upper chamber 3 is prevented from being introduced into the lower chamber 5 through the gap 61 due to the rising of the pressurized air, and the liquid mixture stored in the upper chamber 3 is agitated by the passage of steam. Ru. When the pressurized gas is steam, it has high thermal energy, and a drop in temperature of the beverage that occurs during stirring is prevented.

After performing such agitation for a predetermined time, the deceleration motor 40 is rotated by a predetermined angle to set each cam at the introduction position.Since the shapes of the stirring position and the introduction position of the cam 18 are set to have the same radius, The extraction chamber drive plate 17 does not move, and the extraction chamber 5 remains in close contact with the beverage receiver 32. In addition, since the shape of the cam 27 at the introduction position has a smaller diameter than the shape at the stirring position, the valve drive plate 25 moves upward, and the lever 21
rotates counterclockwise about the pin 20 as a fulcrum.
Therefore, the valve device 7 moves downward and the communication port 4
opens wide. Therefore, the mixed liquid in the upper chamber 3 is introduced into the lower chamber 5 through the communication port 4. At this time, the solenoid valve 30 is closed with a slight delay after the stirring is completed. Since the cam 39 does not act on the pressing plate 37, the beverage tube 34 uses its elastic restoring force to push up and open the pressing plate 37, allowing the coffee beverage to pass through. In such an introduced state, the lever 21, the valve drive plate 25, the valve device 7,
The states of the pressing plate 37 and the cam follower 26 are indicated by dotted lines in FIG.

When the movement of the mixed liquid from the upper chamber 3 to the lower chamber 5 is completed, the deceleration motor 40 is rotated by a predetermined angle to set each cam at the extraction position. The radius of the extraction position of the cam 18 is set equal to the radius of the stirring position,
The extraction chamber 5 is maintained in close contact with the beverage receptacle 32. Also, since the shape of the extraction position of the cam 27 has a larger radius than the shape of the introduction position, the valve drive plate 25 moves downward, and the lever 21 moves to the pin 2.
Rotates clockwise with 0 as the fulcrum. Therefore, the valve device 7 moves upward and closes the communication port 4. Since the radius of the extraction position of the cam 27 is larger than the radius of the stirring position, the valve device 7 closes the communication port 4 at the extraction position by closely contacting the rubber ring 60 without leaving a gap 61. Therefore, the space above the liquid level in the lower chamber 5 is sealed. This extraction state is shown by the solid line in FIG. 3, and when pressurized steam is introduced into the lower chamber 5 by opening the solenoid valve 36, the space above the liquid level in the lower chamber 5 is sealed. The mixed liquid is forced out by pressurized steam and filtered through the filter 6, and the coffee liquid is introduced into the beverage tube 34 through the beverage receiver 32.

After the coffee liquid has been extracted, the solenoid valve 36 is stopped with a slight delay. After the extraction is completed, the deceleration motor 40 is rotated by a predetermined angle to set each cam at the slag discharge position. Both the cams 18 and 27 have a smaller radius compared to the extraction position, so the extraction chamber drive plate 17 is moved upward by the action of the spring described above. Therefore, the lever 21 also moves upward with almost no rotation. Then, as the extraction chamber drive plate 17 rises, the pressing force on the constant pressure device 16 is removed, the yoke 13 rotates clockwise, and the extraction chamber 1 is lifted. Therefore, the pressure between the brewing chamber 1 and the beverage receiver 32 via the gasket 33 is released, and the brewing chamber 1 rises to a position where the wiper 46 can pass over the surface of the filter 6, as shown in FIG. . When this rise of the extraction chamber 1 is detected by a switch (not shown), a drive signal is given to the motor 47, and the power of the motor 47 is transferred to the connecting rod 51.
The wiper 46 removes the coffee grounds remaining on the filter 6 through the links 52 and 51. One rotation of the crank cam 49 is detected to indicate that the removal of the coffee grounds has been completed (not shown). When detected by the switch, the deceleration motor 40 is rotated by a predetermined angle to return each cam to its standby position, and the apparatus is placed in the standby state shown in FIG.

FIG. 7 shows another embodiment, in which the extraction chamber 1 is not separated, but stirring and extraction are carried out in the same chamber. Components that perform the same functions as those in the previous embodiment are given the same reference numbers and their explanations will be omitted. The steam generator 30 is connected to a stirring tube 71 and an extraction tube 70, and the extraction tube 70 is connected to an inlet 75 provided at the upper part of the extraction chamber 1 .
The stirring tube 71 is connected to the beverage receiver 3.
It communicates with an inlet 76 provided in 2. With this configuration, the powder raw material and hot water are taken out into the funnel 74 and introduced into the extraction chamber 1 , and the solenoid valve 73 is opened while the valve device 7 is kept open, and pressurized steam is introduced into the extraction chamber 1 through the filter 6. do. At this time, since the beverage tube 34 is closed, the pressurized steam blows through through the communication port 4 and the mixed liquid is stirred in the extraction chamber 1 . Then, with the valve device 7 closed, the solenoid valve 72 is opened, and the beverage tube 34 is opened.
When the container is opened, the mixed liquid is forced out into pressurized steam and filtered through a filter 6 for extraction.

(G) Effects of the Invention According to the present invention, since the beverage is stirred and extracted using steam, a drop in the temperature of the beverage is prevented. By changing the introduction time of pressurized steam,
You can easily get any stirring and extraction effect.

[Brief explanation of drawings]

Fig. 1 is a side view of the device according to the present invention, Figs. 2 and 3 are explanatory diagrams of the operation, Fig. 4 is a side view of the device when discharging slag, and Fig. 5 is a cam for driving the extraction chamber and its FIG. 6 is a positional relationship diagram of a cam follower, FIG. 6 is a positional relationship diagram of a cam for driving a valve device and its cam follower, and FIG. 7 is a side view of a device according to another embodiment. 1 ...extraction chamber, 6...filter, 30...steam generator.

Claims (1)

[Claims] 1. An extraction chamber into which powdered raw materials and hot water are introduced, a filter that is permeable to gas and liquid and forms the bottom surface of the extraction chamber, and a steam generator that introduces pressurized steam into the extraction chamber. Pressurized steam is introduced into the extraction chamber that is open to the atmosphere to stir the mixed liquid, and pressurized steam is introduced into the extraction chamber whose space above the liquid level is sealed and the filter is stirred. Beverage brewing equipment that extracts beverages through.