JP2736196B2 - Vending machine extraction filtration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extraction filtration device.

[0002]

2. Description of the Related Art This type of extraction and filtration apparatus is disclosed in Japanese Utility Model Laid-Open Publication No. 64-31480.
No., for example. It is configured as shown in FIGS.

[0003] The extraction and filtration apparatus is a brewer unit 1 having an open lower surface as shown in FIG. 2, and a filter which is driven up and down to a position where the 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 element 6 for opening and closing the upper opening 5 of the extraction chamber 4 of the brewer unit 1, an opening and closing device 7 for driving the filter receiver 3, and the like.

[0004] The extraction filtration operation is executed as follows.
Initially, as shown in FIG. 3, the filter filter 3 presses the paper filter 12 against the lower opening 2 of the brewer unit 1 to close it. The upper opening 5 is opened. In this state, as shown by arrow A, the raw material and hot water are introduced into the extraction chamber 4 from the upper opening 5, and in this state, air 10 is blown from the supply port 9 as shown in FIG. Then, as shown in FIG. 5, the depression of the valve body 6 is released, the upper opening 5 is closed by the valve body 6, the extraction chamber 4 is sealed, and in this state, air 10 is supplied from the supply port 9. Further, the internal pressure of the extraction chamber 4 is increased by blowing, and the mixture 11 is forcibly filtered by the paper filter 12 sandwiched between the brewer unit 1 and the filter receiver 3. The hot water in which the extracted extract is dissolved passes through the paper filter 12 and is discharged to the cup via the pipe 13, and the raw material residue 14 remains on the paper filter 12. Next, as shown in FIG. 6, the filter receiver 3 is lowered, and the paper filter 12 to which the raw material slag 14 adheres 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 an output shaft 15 of the opening / closing device 7, and the filter receiver 3 is driven 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. 3 to 6 while the output shaft 15 makes one rotation.

[0006]

The extraction and filtration apparatus having such a conventional configuration is used for selling coffee.
When the stirring step is completed, in the step shown in FIG. 5, the upper opening 5 is closed by the valve body 6, the extraction chamber 4 is closed, the internal pressure of the extraction chamber 4 is increased, and the operation of forced filtration starts. When the raw material H adheres between the valve body 6 and the periphery of the upper opening 5, a situation occurs in which the extraction chamber 4 is closed as shown in FIG. Since the pressure becomes incomplete and air for pressurization leaks from the gap G and the internal pressure of the extraction chamber 4 does not rise sufficiently, the filter receiver 3 shifts to a state as shown in FIG. In addition to the shortage of products to be paid out to the cup,
As a result, there is a problem that the remaining mixed liquid 11 spills around, and contaminates the interior of the vending machine.

[0007] It is an object of the present invention to provide an extraction filtration device capable of performing forced filtration.

[0008]

According to a first aspect of the present invention, there is provided an extraction and filtration apparatus comprising: an extraction chamber in which a mixture of a raw material and hot water is put and a filter is interposed at a liquid outlet; and an opening / closing valve at a liquid inlet and a liquid outlet. An attached intermediate chamber, a suction means and a pressure means selectively connected to the inside of the intermediate chamber are provided, a liquid outlet of the extraction chamber is connected to a liquid inlet of the intermediate chamber, and The first state in which the on-off valve at the liquid outlet is closed, the intermediate chamber is connected to the suction means, and the on-off valve at the liquid inlet of the intermediate chamber is opened, and the on-off valve at the liquid outlet in the intermediate chamber is opened, and the intermediate chamber is used as the pressurizing means. A control unit is provided for switching to a second state of connecting and closing the on-off valve at the liquid inlet of the intermediate chamber.

According to a second aspect of the present invention, there is provided an extraction and filtration apparatus comprising: an extraction chamber in which a mixture of a raw material and hot water is charged; a liquid outlet having a filter interposed therein; A suction means and a pressure means selectively connected to the inside of the intermediate chamber, a pressure sensor for detecting a pressure in the intermediate chamber, and a liquid outlet of the extraction chamber connected to a liquid inlet of the intermediate chamber. In the first state, the open / close valve at the liquid outlet of the intermediate chamber is closed, the open / close valve at the liquid inlet of the intermediate chamber is connected to the suction means, and the open / close valve at the liquid inlet of the intermediate chamber is opened. A control unit is provided for opening and closing the liquid opening and closing valve at the liquid outlet of the intermediate chamber, connecting the intermediate chamber to the pressurizing means, and switching to the second state of closing the liquid opening and closing valve at the liquid inlet of the intermediate chamber. It is characterized by the following.

[0010] The extraction and filtration device according to claim 3 is provided in claim 1.
Or the extraction and filtration device according to claim 2, wherein a first three-way valve is interposed between the suction side of the single pump and the intermediate chamber, and a second three-way valve is provided between the discharge side of the pump and the intermediate chamber. And the suction means and the pressure means are configured by switching the first and second three-way valves.

[0011]

According to the first aspect of the present invention, the control unit is in the first state, connects the extraction chamber to the intermediate chamber in a reduced pressure state, and the liquid mixture in the extraction chamber is sucked into the intermediate chamber via the filter and forcedly filtered. And sent to the intermediate room. Thereafter, when the control unit switches to the second state, the intermediate chamber is pressurized and the liquid mixture in the intermediate chamber is forcibly pushed out from the liquid outlet.

According to the second aspect of the present invention, the control unit switches from the first state to the second state based on the detected pressure value of the pressure sensor, forcibly filters the mixture in the extraction chamber, and sends it to the intermediate chamber. Then, the liquid mixture in the intermediate chamber is forcibly pushed out from the liquid outlet.

According to the third aspect of the present invention, in the first state, the suction side of the pump is connected to the decompression chamber through the first three-way valve, and the discharge side of the pump is connected to the atmosphere through the second three-way valve. Connect and depressurize the intermediate chamber. In the second state, the discharge side of the pump is connected to the decompression chamber via the second three-way valve, and the suction side of the pump is connected to the atmosphere via the first three-way valve to depressurize the intermediate chamber. Therefore, in this case, the intermediate chamber can be depressurized or pressurized using a single pump.

[0014]

An embodiment of the present invention will be described below with reference to FIG. In addition, what has the same effect as FIGS.
The description is given with the same reference numerals.

As shown in FIG. 1, in the extraction and filtration apparatus of the present invention, the valve element 6 and the mechanism required for opening and closing the valve element 6 found in the conventional brewer unit 1 are omitted. A suction unit and a pressurizing unit for decompressing or pressurizing the chamber 19 and the inside of the intermediate chamber 19 are added.

Specifically, the liquid inlet 20 and the liquid outlet of the intermediate chamber 19
21 includes first and second solenoid valves 22 as on-off valves, respectively.
A suction means and a pressure means are constituted by a pump 24 and first and second three-way valves 25a and 25b of an electromagnetic drive type. The control unit 26 that controls switching between the first and second three-way valves 25a and 25b and the first and second solenoid valves 22 and 23 is configured as follows.

The control unit 26 closes both the first and second solenoid valves 22 and 23, and the first three-way valve 25a interposed between the suction side IN of the pump 24 and the intermediate chamber 19 includes: The port P1 and the port P2 are switched to communicate with each other, and the second three-way valve 25b disposed between the discharge side OUT of the pump 24 and the intermediate chamber 19 communicates the port P4 with the port P5 opened to the atmosphere. Has been switched to. This state is referred to as a first state in the following description.

In this first state, the pump 24 is operated, and the internal pressure of the intermediate chamber 19 is set at a predetermined pressure lower than the atmospheric pressure to stand by. When the selling operation is started and the raw material and hot water are put into the extraction chamber 4 and the raw material extract is melted, the control unit 26
Opens the first solenoid valve 22 provided at the liquid inlet 20 of the intermediate chamber 19.

Thus, the space B formed below the paper filter 12 by the filter receiver 3 is connected to the depressurized intermediate chamber 19, and the mixture 11 in the extraction chamber 4 is suction-filtered through the paper filter 12. The raw material residue remains on the paper filter 12 and the extract that has passed through the paper filter 12 flows into the intermediate chamber 19. After that, the control unit 26
Are the first and second solenoid valves 22 and 23 and the first and second three-way valves 25
a and 25b are switched from the first state to the second state.

In the second state, the first solenoid valve 22 is closed, the second solenoid valve 23 is opened, and the first three-way valve 25a on the suction side IN of the pump 24 communicates with the port P2 and the atmosphere. The port P3 is switched to a communication state, and the discharge side O of the pump 24 is
The second three-way valve 25b of the UT is switched to a state in which the port P4 communicates with the port P6 communicating with the intermediate chamber 19.

In the second state, the inside of the intermediate chamber 19 is pressurized by the pump 24, and the extract in the intermediate chamber 19 is forcibly discharged to the mixing ball 27. Mixing ball 27
In the extract, milk and sugar as auxiliary materials are dissolved as needed. The extract in which the auxiliary material is dissolved as necessary by the mixing ball 27 is discharged to the cup.

The intermediate chamber 19 is heated and maintained by the heater 29 so that the temperature of the extract is not reduced. As described above, since the extraction chamber 4 is forcibly filtered by the suction force of the intermediate chamber 19 without being pressurized, the valve body 6 and the like conventionally required for pressurizing the extraction chamber 4 are not required, so Extraction operation can be realized.

Further, since the pressure is forcibly discharged from the intermediate chamber 19 to the mixing balls 27, the required discharge time can be shortened, and the position of the mixing balls 27 can be the same height as the intermediate chamber 19 or the intermediate chamber 19 Or higher.

In the above-described embodiment, the operation of the pump 24 is first started, and thereafter the raw material and hot water are charged into the extraction chamber 4. The control unit 26 may be configured so that the pump 24 is operated during a time required to adjust the hot water to reduce the pressure in the intermediate chamber 19.

In the above-described embodiment, the timing at which the control unit 26 switches from the first state to the second state is the second state after a specified time from opening the first solenoid valve 22 in the first state. 1, a pipe 30 communicating with the liquid inlet 20 of the intermediate chamber 19 is provided, and the pressure in the pipe 30 is monitored by a pressure sensor 31 as shown by a broken line in FIG. By configuring the control unit 26 so as to switch from the first state to the second state as soon as the detected pressure becomes the atmospheric pressure, it is possible to eliminate unnecessary waste time and reduce the time required for one sales.

In the above embodiment, the single pump 24 is combined with the first and second three-way valves 25a and 25b, and in the first state, the pump 24 acts on the intermediate chamber 19 as a suction means,
In the state (1), the pump 24 acts on the intermediate chamber 19 as a pressurizing means. However, a pump exclusively for suction and a pump exclusively for pressurizing are provided, and the first chamber is selectively connected to any one of the pumps. , The second state can be switched.

In the above embodiment, the auxiliary material is melted by the mixing ball 27. However, it is also possible to vigorously inject and extract the extract from the intermediate chamber 19 into the cup 28 into which the auxiliary material has been charged, to perform cup mixing. In this case, the mixing ball 27 becomes unnecessary.

[0028]

According to the first aspect of the present invention, there is provided an extraction chamber in which a mixture of raw material and hot water is put and a liquid outlet is provided with a filter, and an intermediate chamber in which a liquid inlet and a liquid outlet are provided with an on-off valve. A suction means and a pressurizing means selectively connected to the inside of the intermediate chamber, a liquid outlet of the extraction chamber connected to a liquid inlet of the intermediate chamber, and an on-off valve for a liquid outlet of the intermediate chamber. The first state in which the intermediate chamber is closed and the intermediate chamber is connected to the suction means and the opening and closing valve of the liquid inlet of the intermediate chamber is opened, and the opening and closing valve of the liquid outlet of the intermediate chamber is opened and the intermediate chamber is connected to the pressurizing means and the liquid in the intermediate chamber is connected Since the control unit for switching to the second state in which the on-off valve at the inlet is closed is provided, more reliable extraction and filtration can be realized as compared with the conventional case where the extraction chamber is pressurized and subjected to forced filtration.

According to a second aspect of the present invention, in addition to the first aspect, a pressure sensor for detecting the pressure of the intermediate chamber is provided, and the control unit switches the first state from the first state based on the detected pressure value of the pressure sensor. In order to switch to the state of, compared to the case where the control unit is configured to detect the passage of the specified time and switch.
It is possible to eliminate unnecessary waiting time and shorten the time required for one sale.

According to the third aspect of the present invention, a single pump can be used for the suction means and the pressurizing means, so that the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an extraction filtration device of the present invention.

FIG. 2 is a front view of a conventional extraction and filtration device.

FIG. 3 is a cross-sectional view of a step of charging a raw material and hot water in a conventional extraction filtration device.

FIG. 4 is a cross-sectional view of a stirring step of a conventional extraction and filtration device.

FIG. 5 is a cross-sectional view of a conventional extraction filtration device in a forced filtration step.

FIG. 6 is a cross-sectional view of a step of removing a raw material residue of a conventional extraction filtration device.

FIG. 7 is a cross-sectional view showing an incompletely closed state of an upper opening of a conventional extraction and filtration device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Brewer unit 3 Filter receiver 4 Extraction chamber 12 Paper filter 19 Intermediate chamber 20 Liquid inlet of intermediate chamber 21 Liquid outlet of intermediate chamber 22, 23 First and second solenoid valves 24, 25a, 25b as on-off valves Pump and second 1, second three-way valve [suction unit and pressurizing unit] 26 control unit 31 pressure sensor

Claims (3)

(57) [Claims] 1. An extraction chamber in which a mixed liquid of raw material and hot water is placed and a filter is interposed at a liquid outlet, an intermediate chamber having a liquid inlet and a liquid outlet provided with an open / close valve, and an intermediate chamber. A suction means and a pressure means, which are connected to each other, connect the liquid outlet of the extraction chamber to the liquid inlet of the intermediate chamber, and close the on-off valve of the liquid outlet of the intermediate chamber to make the intermediate chamber a suction means. A first state in which the open / close valve of the liquid inlet of the intermediate chamber is opened and a first state in which the open / close valve of the liquid outlet of the intermediate chamber is opened, the intermediate chamber is connected to the pressurizing means, and the open / close valve of the liquid inlet of the intermediate chamber is closed. An extraction filtration device provided with a control unit for switching to the state of 2. 2. An extraction chamber in which a mixture of raw materials and hot water is placed and a filter is interposed at a liquid outlet, an intermediate chamber having an on-off valve installed at a liquid inlet and a liquid outlet, and an intermediate chamber selected between the two. A suction means and a pressure means, which are connected to each other, and a pressure sensor for detecting the pressure of the intermediate chamber, a liquid outlet of the extraction chamber is connected to a liquid inlet of the intermediate chamber, and a liquid outlet of the intermediate chamber. In the first state in which the on-off valve is closed, the intermediate chamber is connected to the suction means and the on-off valve at the liquid inlet of the intermediate chamber is opened, it is detected that the detected pressure value of the pressure sensor has risen and has reached the specified pressure. An extraction / filtration apparatus provided with a control unit that opens and closes a liquid outlet opening / closing valve of an intermediate chamber, connects the intermediate chamber to pressurizing means, and switches to a second state in which the liquid inlet / outlet valve of the intermediate chamber is closed. 3. A first three-way valve is interposed between the suction side of the single pump and the intermediate chamber, and a second three-way valve is interposed between the discharge side of the pump and the intermediate chamber. 3. The extraction and filtration device according to claim 1, wherein the suction means and the pressure means are constituted by switching between the first and second three-way valves.