JPH0811092B2 - Beverage extractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a beverage extractor for extracting coffee liquid, for example, by utilizing a siphon phenomenon.

(Prior Art) FIG. 5 shows an example of a siphon coffee extractor. The substantially L-shaped main body 1 is composed of a base case 2 and an electric component case 3 which is integrally provided upright from the base case 2. A mill case 6 having a mill chamber 4 and a guide portion 5 communicating with the mill chamber 4 is detachably attached to the upper portion of the electrical component case 3, and in the attached state, a cutter disposed on the inner bottom portion of the mill case 6 is attached. 7
Is connected via a coupling 9 to a shaft of a motor 8 for a mill disposed above the electrical component case 3. The mill motor 8 is driven for a set time of a timer (not shown). Also, a heater is installed on the base case 2.
10 is located and the mill motor 8 by the above timer
When the driving is finished, electricity is supplied to generate heat. On the other hand, 11 is a flask-shaped storage container, the outer periphery of the neck of which is a container support extending from the side of the base case 2.
It is clamped and fixed by an annular portion 13 at the tip of 12 so that the storage container 11 is positioned on the heater 10. An extraction container 15 that communicates with the storage container 11 through a water pipe 14 is placed on the storage container 11. Directly, a cooling fan 16 is provided in the electric component case 3, and the extraction container 15
When the temperature detecting element 17 in contact with the heater detects a predetermined temperature, it is driven and blows air to the lower portion of the storage container 11 and the heater 10.

Now, in order to extract the coffee liquid with the siphon-type coffee extractor having the above-mentioned configuration, first, a predetermined amount of water is stored in the storage container 11, then coffee beans are put into the mill chamber 4 and the timer is set. . Then, the milling motor 8 is driven for a predetermined time to crush the coffee beans and become coffee powder, which falls from the guide portion 5 into the extraction container 15. After this, the heater 10 is energized, the water stored in the storage container 11 is boiled, the vapor pressure due to the boiling, the hot water in the storage container 11 rises into the extraction container 15 through the water pipe 14, As a result, the coffee grounds are wetted and the coffee liquid is extracted. At this time, since the temperature detecting element 17 detects the temperature of the hot water supplied into the extraction container 15, the heater 10 is de-energized and the cooling fan 16 is driven to store the storage container 11 and the heater 10.
Blow to. As a result, the temperature inside the storage container 11 drops,
In response to this, the air pressure in the storage container 11 decreases, so that the coffee liquid in the extraction container 15 passes through the water pipe 14 and drops into the storage container 11 to be stored therein.

(Problems to be solved by the invention) By the way, in the above-mentioned configuration, in the drip coffee extractor, the extraction is started after the coffee powder is wetted at once by the hot water supplied into the extraction container 15. Although it is possible to obtain a unique flavor that cannot be made, the wet state is maintained from the beginning of the supply of hot water from the storage container 11 to the extraction container 15 until the end of the supply, so the extracted coffee liquid is stored. There was a risk that the flavor of the coffee liquid would be impaired by staying in the extraction container 15 for a relatively long time without dropping into the container 11.

Therefore, it is an object of the present invention to provide a beverage extractor that utilizes the siphon phenomenon to extract a beverage such as coffee liquid, but does not excessively extract the beverage.

[Structure of the Invention] (Means for Solving the Problems) A siphon-type beverage extractor of the present invention places an extraction container on a storage container heated by a heater, and installs a filter at the upper opening of the extraction container. Suspended and supported, the opening of the storage container is hermetically sealed by a sealing member, the sealing member penetrates hermetically and one open end faces the filter from above and the other open end is A pumping pipe located close to the inner bottom of the storage container is provided, a check valve is provided at an intermediate part of the pumping pipe, and a communication passage is provided so as to establish communication between the storage container and the extraction container. Further, the communication passage is configured to be able to be closed, and a pressure responsive member that opens the communication passage when the inside of the storage container becomes a predetermined pressure or less in the closed state is provided.

(Operation) When the heater is energized in a state where water is stored in the storage container and, for example, coffee powder is placed on the filter, the heater generates heat and the water in the storage container boils, and accordingly, the storage The vapor pressure in the container rises. At this time, since the communication passage connecting the storage container and the extraction container is closed by the pressure responsive member, the hot water in the storage container is pushed by the vapor pressure and sent into the extraction container through the pumping pipe. Thereby, the coffee powder on the filter is poured with hot water, and the coffee liquid having a relatively low concentration is extracted and retained in the extraction container. Then, after a lapse of a predetermined time from the start of the supply of hot water from the storage container to the extraction container, when the liquid level of the coffee liquid in the extraction container rises to a position where the filter is immersed, the coffee powder on the filter is suddenly wetted. Coffee liquid with good flavor is extracted. At this time, since the storage container is immediately cooled by disconnecting the heater, the pressure in the storage container is immediately reduced to a predetermined pressure after the coffee liquid having a good flavor is extracted as described above. As a result, the pressure responsive member operates to open the communication passage that hermetically connects the storage container and the extraction container, so that the coffee liquid in the extraction container is not excessively extracted and the coffee liquid in the storage container is not excessively extracted. Sent to.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in FIG. 2 showing the whole, a spiral heater 22 is arranged on the upper surface of a base 21, and the heater 22 is energized to generate heat when a switch (not shown) is turned on. Reference numeral 23 is a substantially inverted L-shaped container support fixed to the side surface of the base 21, and an annular portion 24 formed at the tip thereof is located above the base 21. Reference numeral 25 denotes a flask-shaped storage container, which is supported on the heater 22 by fastening and fixing the outer periphery of the neck portion thereof by the annular portion 24 of the container support 23. 26 is an extraction container, the upper and lower ends of which are open,
As shown in FIG. 1, a disc-shaped sealing member 27 is fitted around the outer periphery of the lower end opening. This sealing member 27 is a storage container 25.
Is fitted into the top opening of the
26 is supported on the storage container 25 in an upright state. With the above configuration, the extraction container 26 and the storage container 25 are communicated with each other through the lower end opening of the extraction container 26, and in the present embodiment, the lower end opening is the communication passage 28 (see FIG. 1). .

Reference numeral 29 is a pressure responsive member provided in the communication passage 28, and the structure thereof will be described with reference to FIGS. 1 and 3.

Reference numeral 30 denotes a packing part made of, for example, heat-resistant rubber, in which a hollow chamber 31 is formed, and further, the first and second stoppers having through holes 32a and 33a at the center at the upper and lower parts of the hollow chamber 31, respectively. Portions 32 and 33 are formed. Here, as shown in FIG. 3, a plurality of rectangular plate-shaped ridges 33b are integrally formed on the upper surface of the second stopper portion 33 at a predetermined interval. Reference numeral 34 denotes a thin-walled third stopper portion formed in the middle portion of the hollow chamber 31, which protrudes inward from the inner peripheral surface of the hollow chamber 31 and can be elastically moved up and down. . Reference numeral 35 denotes a ball located between the first and third stopper portions 32 and 34, which is elastically pressed upward by the third stopper portion 34, thereby
It abuts the stopper portion 32 and closes the through hole 32a.

On the other hand, 36 is a pumping pipe, which penetrates the sealing member 27 in an airtight manner, one open end of which faces the extraction container 26 from above as shown in FIG. 2 and the other open end is reserved. Container 25
It is located close to the inner bottom of the. A check valve 37 is provided in the middle of the pumping pipe 36, and is composed of a packing portion 38 having a through hole 38a and a ball 39. Here, the upper surface of the packing portion 38 is formed so as to be inclined toward the through hole, and the ball 39 is located at the center of the upper surface to close the through hole 38a.

Further, reference numeral 40 shown in FIG. 2 is a conical paper filter, which is suspended and supported at the upper opening of the extraction container 26.

 Next, the operation of the above configuration will be described.

First, by removing the sealing member 27 from the opening of the storage container 25, the extraction container 26 is removed from the storage container 25, water is supplied into the storage container 25, and the extraction container 26 is placed on the storage container 25 again. Coffee powder is supplied onto the paper filter 40 while being placed on the paper. When the heater 22 is energized, the heater 22 generates heat and the water in the storage container 25 boils, and the vapor pressure in the storage container 25 rises accordingly. At this time, the pressure responsive member 29
Since the through hole 32a of is closed by the ball 35,
The vapor in the storage container 25 is prevented from flowing into the extraction container 26 through the communication passage 28, and thus the storage container 25
The vapor pressure inside rises more and more. Then, the hot water in the storage container 25 is pushed by the vapor pressure, so that the inside of the pumping pipe 36 rises. At this time, the ball 39 of the check valve 37 provided in the middle of the pumping channel 36 floats up from the packing part 38 by the rising force of the hot water as shown by the broken line in FIG. The hot water is pumped through the pump 36 and the paper filter 40
Is poured into. Therefore, when the coffee powder on the paper filter 40 is poured with hot water, the coffee liquid having a relatively low concentration is extracted and stored in the extraction container 26.

Now, as the hot water in the storage container 25 is extracted as coffee liquid, the liquid level in the extraction container 26 rises so that the coffee powder on the paper filter 40 is finally immersed in the coffee liquid. Then, the whole coffee powder is wetted at once by the coffee liquid having a relatively low concentration, whereby a coffee liquid having a siphon-type unique flavor can be obtained.
At this time, when the heater 22 is cut off, the storage container 25 is cooled and the internal pressure of the storage container 25 is lowered, and accordingly, the balls 35 of the pressure responsive member 29 are sucked toward the storage container 25. Become. Then, when the storage container 25 drops to a predetermined pressure, the ball 35 finally falls against the elastic force of the third stopper portion 34, and as shown by the broken line in FIG. 1, the protrusion of the second stopper portion 33. Received by ridge 33b. Therefore,
The coffee liquid in the extraction container 26 is stored in the hollow chamber of the pressure responsive member 29.
After passing through 31, it descends into the storage container 25 and is stored therein. In addition, in order to reposition the ball 35 that is in contact with the second stopper portion 33 between the first and third stopper portions 32 and 34, the extraction container 26 is removed from the storage container 25 and the pressure responsive member is used. For example, a rod-shaped object such as chopsticks is inserted into the through hole 33a of 29 to push up the ball 35.

In short, according to the configuration described above, when the supply of hot water from the storage container 25 to the extraction container 26 progresses by a predetermined amount, the coffee powder in the paper filter 40 is wetted all at once, and the extraction of the coffee liquid having a good flavor is performed. Then, the coffee liquid extracted immediately by the cooling of the storage container 25 is pressure-responsive member.
Since it can be supplied to the storage container 25 by the operation of 29, unlike the conventional one in which the coffee powder is wet from the time when the hot water of the storage container is supplied to the extraction container,
The extraction time of the coffee liquor does not become excessively long, so that the flavor of the coffee liquor is not impaired.

Further, since the ball 39 moves up and down in accordance with the siphon phenomenon, the siphon phenomenon can be further visually recognized and enjoyed.
Further, since the paper filter 40 is used, the extraction container 26 can be easily cleaned.

Further, the ball 35 of the pressure responsive member 29 drops when the pressure in the storage container 25 has dropped to a predetermined pressure and falls to the extraction container.
Since the coffee liquid in 26 drops into the storage container 25, coffee with a good flavor can be obtained regardless of the amount of coffee in the extraction container 26.

The present invention is not limited to the above embodiment,
As shown in FIG. 4, an arm 43 extending laterally may be attached to the upper end of the pumping pipe 41 via a joint 42. In this case, the paper filter 40 can be easily removed from the extraction container 26 by rotating the arm portion 43 from the position shown by the solid line to the position shown by the broken line.

In addition, the present invention is not limited to the above and shown in the drawings. For example, the communication passage may be provided separately from the storage container, and the pressure responsive member reduces the pressure inside the storage container to a predetermined pressure. Then, it may be constituted by a pressure valve that operates to keep the communication passage open, and various modifications can be made without departing from the scope of the invention.

[Effects of the Invention] As is clear from the above description, according to the beverage extractor of the present invention, when the amount of hot water supplied from the storage container to the extraction container has advanced by a predetermined amount, such as coffee powder on the filter. Since the material to be extracted is suddenly wetted, the siphon phenomenon is utilized to extract a beverage such as coffee liquid, but the beverage is not excessively extracted, which is an excellent effect.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an essential part, FIG. 2 is a front view of the whole, and FIG. 3 is a sectional view of a lower portion of a pressure responsive member. FIG.
Further, FIG. 4 is a perspective view of a main part showing another embodiment of the present invention. FIG. 5 is a vertical sectional view of the whole conventional example. In the figure, 25 is a storage container, 26 is an extraction container, 27 is a sealing member, 28
Is a communication passage, 29 is a pressure responsive member, 36 is a pumping pipe, and 37 is a check valve.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 60-179021 (JP, A) JP 59-209318 (JP, A) JP 36-1797 (JP, Y1) JP 49- 12395 (JP, Y1)

Claims (1)

[Claims] 1. A storage container to be heated by a heater, an extraction container placed on the storage container, a filter suspended and supported by an upper opening of the extraction container, and an opening of the storage container. A sealing member that hermetically seals, and one opening end that is provided so as to penetrate the sealing member airtightly is positioned so as to face the filter from above and the other opening end is the inner bottom portion of the storage container. A pumping pipe positioned so as to be in close proximity to the pumping pipe, a check valve provided at an intermediate part of the pumping pipe, and a communication passage provided so as to communicate between the storage container and the extraction container, A beverage extractor comprising: a communication passage that can be closed; and a pressure responsive member that opens the communication passage when the inside of the storage container has a predetermined pressure or less in the closed state.