JPH05258172A - Method and device of extraction/filtration for vending machine - Google Patents

Abstract

PURPOSE:To securely execute forced filtration by charging material and hot water from the upper part opening of an extraction room to rotate a valve element, pouring hot water from the upper opening and pressing the valve element to a valve sheet after that to execute forced-filtration. CONSTITUTION:A filter receiver 3 blocks the bottom face opening 2 of a brewer unit 1 to push down the valve element 6 against the energizing force of a compression spring 21 to open the upper part opening 5. Then, material and hot water are charged to the extraction room from the upper part opening 5. Air 10 is blown from a feeding port 9 in the state so as to stir the mixed liquid 11 of material and hot water. Next, a motor 27 is driven to rotate a shaft 19 to rotate the valve element 6 and a stirring body 28. Then, a little amt. of hot water is poured from the upper part opening 5. With the rotation of the valve element 6, material stuck to the valve element 6 is overshot by centrifugal force, splashed to the extraction room 4 and removed. Then, the driving of the motor 27 is finished and the pushing-down of the valve element 6 is released to block the upper part opening 5 with the valve element 6 to hermetically close the extraction room 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extracting and filtering in a vending machine.

[0002]

2. Description of the Related Art This type of extraction / filtering device is known as the SAIkai 64-314
It is disclosed in Japanese Patent No. 80 and the like. It is constructed as shown in FIGS.

As shown in FIG. 5, the extraction and filtration device is a filter which is driven up and down to a brewer unit 1 whose lower surface is opened, a position where a lower surface opening 2 of the brewer unit 1 is closed, and a position where it is opened as shown in FIG. It comprises a receiver 3, a valve body 6 for opening and closing the upper opening 5 of the extraction chamber 4 of the brewer unit 1, an opening / closing device 7 for driving the filter receiver 3, and the like.

The extraction / filtration operation is carried out in the steps shown in FIG. Initially, the filter holder 3 is shown in # 1 as shown in FIG.
The lower surface opening 2 of the brewer unit 1 is closed with, and the valve body 6 is pushed down against the bias of the compression spring 8 with # 2 to open the upper opening 5 of the extraction chamber 4. In this state, in step # 3, as shown by arrow A in FIG.
Throw in. In this state, as shown in FIG. 7, air 10 is blown from the supply port 9 to stir the mixed liquid 11 of the raw material and the hot water,
In # 4, as shown in FIG. 8, the pushing down of the valve body 6 is released, and the valve body 6 closes the upper opening 5 to seal the extraction chamber 4. In # 5, air 10 is further blown from the supply port 9 to increase the internal pressure of the extraction chamber 4, and the mixed liquid 11 is forcibly filtered by the paper filter 12 held between the brewer unit 1 and the filter receiver 3. The hot water in which the extracted extract is melted passes through the paper filter 12 and is discharged to the cup through the pipe 13, and the raw material slag 14 remains on the paper filter 12. Next, as shown in FIG. 9, the filter receiver 3 descends, and the paper filter 12 to which the raw material slag 14 is attached is replaced with the one used for the next sale.

The valve body 6 is driven by a valve opening / closing cam 16 attached to the output shaft 15 of the opening / closing device 7, and the filter receiver 3 is moved by a main cam 17 attached to the output shaft 15 of the opening / closing device 7 via a slide shaft 18. While being driven, the valve body 6 and the filter receiver 3 move as shown in FIGS. 6 to 9 while the output shaft 15 makes one rotation.

[0006]

The extraction and filtration device having such a conventional structure is used for selling coffee.
When the stirring process is completed, in # 4, as shown in FIG.
In order to prepare for the operation of the forced filtration in # 5 by closing the upper opening 5 to close the extraction chamber 4 and increasing the internal pressure of the extraction chamber 4, if the raw material adheres to the valve body 6, Body 6 and upper opening 5
When the raw material H adhering to the surroundings of the extraction chamber 4 is sandwiched, the hermetically sealed state of the extraction chamber 4 becomes incomplete as shown in FIG. Since air leakage occurs and the internal pressure of the extraction chamber 4 does not rise sufficiently, the filter tray 3 moves to the state of falling as shown in FIG. 9 during the forced filtration, and the product to be dispensed into the cup is insufficient. At the same time, when the filter receiver 3 descends, the remaining mixed liquid 11 spills around it, and the interior of the vending machine is contaminated.

An object of the present invention is to provide an extraction / filtration method capable of performing reliable forced filtration even if the raw material adheres to the valve body in the step # 3.

[0008]

According to the extraction and filtration method of the present invention, the raw material and hot water are charged into the extraction chamber through the upper opening of the extraction chamber of the brewer unit, and after charging, the valve body is pushed from the inside of the extraction chamber to the valve seat. In the cooking process in which the upper opening is blocked and the extraction chamber is pressurized to forcibly filter the mixture of hot water and the raw material with a filter and the extraction filtrate is discharged, the raw material and hot water are extracted from the upper opening of the extraction chamber. Next to the step of introducing into the chamber, the valve body is rotated, hot water is poured from the upper opening, and after this step, the valve body is pressed against the valve seat to perform forced filtration.

[0009]

According to this structure, when the raw material and hot water are poured into the extraction chamber from the upper opening of the extraction chamber, the raw material attached to the valve body is
As the valve body rotates, it is shaken off by centrifugal force and removed. Since the hot water is poured from the upper opening when the valve body is rotated, the adhesive force of the adhered raw material to the valve body is weakened by the poured hot water, and it can be reliably shaken off and removed from the valve body. Therefore, in the forced filtration step, the extraction chamber can be sufficiently sealed.

[0010]

EXAMPLES The extraction and filtration method of the present invention will be described below with reference to FIGS. 1 to 3 showing specific examples.

Elements having the same functions as those in FIGS. 5 to 9 will be described with the same reference numerals. In the extraction / filtration apparatus of this embodiment, as shown in FIG. 2, a shaft 19 for driving the valve body 6 is inserted into a hole 20 formed in the brewer unit 1 and slidable in the axial direction. The shaft 19 is urged by the urging force of the compression spring 21 in a direction of pressing the valve body 6 around the upper opening 5, and the lower end of the compression spring 21 and the hole
A washer 22 and a bearing 23 are provided between the upper end of the shaft 20 and the periphery of the upper end of the shaft 20 so that the washer 22 can smoothly rotate around the axis of the shaft 19. Ball on top of shaft 19
24 is embedded, and the shaft 19 is in contact with the peripheral surface of the valve opening / closing cam 16 via the ball 24. A gear 25 is attached near the upper end of the shaft 19, and a gear 27 that meshes with the gear 25 is attached to the fixed side of the motor 27.
Are arranged.

The lower end of the shaft 19 is extended downward toward the extraction chamber 4, and a stirring member 28 is attached to it.
The extraction and filtration operation is performed in the process shown in FIG. 1, and is different from the conventional extraction and filtration method shown in FIG. 4 between # 2 and # 4.
The difference is that 3d is carried out.

Specifically, in # 1, the lower surface opening 2 of the brewer unit 1 is closed by the filter receiver 3, and in # 2, the valve body 6 is pushed down against the bias of the compression spring 21 and the upper portion of the extraction chamber 4 is pressed. Open the opening 5. In step # 3a, the raw material and hot water are charged into the extraction chamber 4 through the upper opening 5. In this state, air 10 is blown from the supply port 9 to stir the mixed liquid 11 of the raw material and the hot water. In # 3b shown in FIG. 2, the motor 27 is operated to drive the shaft 19
Is rotated to rotate the valve body 6 and the stirring body 28. During this rotation of the valve body 6, in # 3c, a small amount of hot water is poured from the upper opening 5 as shown by an arrow B in FIG.

By the rotation of the valve body 6, the raw material adhered to the valve body 6 in the step of # 3a is shaken off by the centrifugal force and scattered in the extraction chamber 4 to be removed. The pouring of the hot water weakens the adhesion of the raw material to the valve body 6 and can be reliably shaken off and removed.

At # 3d, the operation of the motor 27 is terminated, and at # 4, the pushing down of the valve body 6 is released to allow the valve body 6 to open the upper opening 5.
To close the extraction chamber 4. In this way, after performing the steps # 3b and # 3c to surely remove the adhered raw material,
Since the forced filtration step 4 and subsequent steps are performed, the extraction chamber can be sufficiently sealed in the forced filtration step, and the filtration can be completed within the specified time.

The process after this is the same as the conventional one, and the hot water in which the extracted extract forcibly filtered is melted is discharged to a cup, and the paper filter 12 to which the raw slag 14 is attached is used for the next sale. To complete one operation.

[0017]

As described above, according to the extraction and filtration method of the present invention, the raw material and the hot water are charged into the extraction chamber through the upper opening of the extraction chamber of the brewer unit, and after the charging, the valve element is placed on the valve seat from the inside of the extraction chamber. In the cooking process of pressing and closing the upper opening, pressurizing the extraction chamber to forcibly filter the mixed liquid of hot water and raw material with a filter, and discharging the extraction filtrate, the raw material and hot water are discharged from the upper opening of the extraction chamber. Next to the step of charging into the extraction chamber, the valve body is rotated and hot water is poured from the upper opening, and after this step, the valve body is pressed against the valve seat to perform forced filtration. When the hot water is poured into the extraction chamber, the raw materials attached to the valve body are removed by centrifugal force when the valve body rotates. Since hot water is poured from the upper opening when the valve body is rotated, the adhesive force of the adhered raw material to the valve body is weakened by the poured hot water and can be reliably shaken off and removed from the valve body. In the forced filtration step, the extraction chamber can be sufficiently sealed and a reliable extraction operation can be realized.

[Brief description of drawings]

FIG. 1 is a process drawing of a specific example of the cooking method of the present invention.

FIG. 2 is a cross-sectional view immediately after adding the raw material and hot water of the same example.

FIG. 3 is a cross-sectional view of a pressure extraction process of the same example.

FIG. 4 is a cooking process diagram in a conventional extraction and filtration device.

FIG. 5 is a front view of a conventional extraction and filtration device.

FIG. 6 is a cross-sectional view of a step of charging a raw material and hot water of a conventional extraction and filtration device.

FIG. 7 is a cross-sectional view of a stirring process of a conventional extraction filtration device.

FIG. 8 is a cross-sectional view of a forced filtration process of a conventional extraction filtration device.

FIG. 9 is a cross-sectional view of a step of removing a raw material slag of a conventional extraction and filtration device.

FIG. 10 is a cross-sectional view showing an incompletely sealed state of an upper opening of a conventional extraction and filtration device.

[Explanation of symbols]

 1 Brewer unit 3 Filter holder 4 Extraction chamber 5 Upper opening 6 Valve body 19 Shaft 21 Compression spring 25, 26 Gear 27 Motor

Claims (2)

[Claims] 1. The raw material and hot water are charged into the extraction chamber through the upper opening of the extraction chamber of the brewer unit, and the valve body is pressed against the valve seat from the inside of the extraction chamber to close the upper opening, and the extraction chamber is closed. In the cooking process of pressurizing the mixed liquid of hot water and the raw material with a filter and discharging the extraction filtrate, following the step of charging the raw material and hot water into the extraction chamber through the upper opening of the extraction chamber, A method for extracting and filtering an automatic vending machine, which comprises rotating and pouring hot water from the upper opening, and pressing a valve element against a valve seat after this step to perform forced filtration. 2. The raw material and hot water are charged into the extraction chamber through the upper opening of the extraction chamber of the brewer unit, and after the injection, the valve body is pressed against the valve seat from the inside of the extraction chamber to close the upper opening to close the extraction chamber. In a vending machine that pressurizes a mixed liquid of hot water and raw material with a filter to discharge the extracted filtrate, while supporting the shaft to which the valve element is attached rotatably, the shaft is rotated around its axis. Extraction filtration device for vending machines equipped with a drive source that rotates.