JPH05217067A - Extracting filter for automatic vending machine - Google Patents

Abstract

PURPOSE:To efficiently wash dirt stuck to the inside of an extraction room by forming a washing water passage on a valve body and a shaft for driving the valve body and forming a pressurizing device for pressing washing water to the washing water passage. CONSTITUTION:When a pump P2 is driven at the time of washing the extraction room 4, hot water H is jetted from respective outlets 34 of the washing water passage 30 opened on the outer periphery of the valve body 6 into the inside of the room 4 through the washing water passage 30 of the shaft 23 and the passage 30 formed on the valve body 6. The output spindle 15 of an opening/ closing device is rotated in accordance with the operation of the pump P2, a lever 24 is rotated from a solid line position to a virtual line position around a supporting point 35 through an opening/closing cam 16 and a cam roller 26, the shaft 23 is depressed by the lever 24, and the valve body 6 is moved from the solid line position up to the virtual line position. The valve body 6 is lifted in the room 4 in accordance with the rotation of the cam 16 and hot water H jetted from the valve body 6 is brought into collision with the inside of the room 4 to wash up dirt stuck to the inside of the room 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extraction and filtration device for a vending machine.

[0002]

2. Description of the Related Art This type of extraction / filtering device is used in the actual construction of Shokai 64-31480.
It is disclosed in Japanese Patent Publication No. It is constructed as shown in FIGS.

As shown in FIG. 4, 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 the lower surface opening 2 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 brewer unit 1 is fixed side 20 via the metal fitting 19.
It is detachably attached to.

The extraction filtering operation is executed as follows.
First, as shown in FIG. 5, the paper filter 12 is pressed against the lower surface opening 2 of the brewer unit 1 by the filter receiver 3 to close it, and the valve body 6 is pushed down against the bias of the compression spring 8 to push down the extraction chamber 4. Open the upper opening 5 of. In this state, as shown by the arrow A, the raw material and the hot water are charged into the extraction chamber 4 through the upper opening 5, and in this state, the air 10 is blown from the supply port 9 to mix the raw material and the hot water 11 as shown in FIG. Then, as shown in FIG. 6, the pushing down of the valve body 6 is released to close the upper opening 5 with the valve body 6 to seal the extraction chamber 4, and in this state, the air 10 is supplied from the supply port 9. Further, it is blown in to raise 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. 8, the filter receiver 3 descends, and the paper filter 12 having the raw material slag 14 attached thereto 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. 5 to 8 while the output shaft 15 makes one rotation.

[0006]

The extraction and filtration device having such a conventional structure is used for selling coffee.
If it is used for a long period of time, dirt will adhere to the inner surface of the extraction chamber 4. Therefore, conventionally, as shown in FIG. 9, the detergent 21 is put into the extraction chamber 4 and air 10 is supplied from the supply port 9.
Is blown in to stir the detergent 21 to wash the inner surface of the extraction chamber 4, and when the washing is completed, the valve body 6 closes the upper opening 5 to seal the extraction chamber 4, and in this state, air 10 is supplied from the supply port 9. Is further blown in to raise the internal pressure of the extraction chamber 4 to forcibly discharge the washed detergent 21.

However, such cleaning by air agitation has a problem that the cleaning efficiency is poor and the dirt adhering to the inner surface of the extraction chamber 4 is difficult to remove. An object of the present invention is to provide an extraction / filtration device that can be expected to improve cleaning efficiency.

[0008]

According to a first aspect of the present invention, there is provided an extraction / filtration apparatus in which a raw material is introduced into an extraction chamber through an upper opening of an extraction chamber of a brewer unit, and after the introduction, a valve body is pushed from the inside of the extraction chamber to a valve seat. In the cup-type vending machine, which closes the upper opening by applying, pressurizes the extraction chamber to forcibly filter the mixed solution of hot water and the raw material with a filter, and dispenses the extracted filtrate into a cup,
A washing water passage is formed in the valve body and a shaft for driving the valve body, and a pressurizing device for pumping the washing water is provided in the washing water passage.

The extraction and filtration device according to the second aspect is the first aspect.
In the above, the pressurizing device is constituted by a pump for supplying hot water in the hot water tank. According to a third aspect of the present invention, there is provided the extraction and filtration device according to the first aspect, wherein the pressurizing device is configured by a pump that switches and supplies the water in the reservoir tank to the hot water tank and the wash water passage.

[0010]

According to the structure of the first aspect of the present invention, at the time of cleaning, when the detergent or hot water as the cleaning water is pressure-fed to the cleaning water passage by the pressurizing device, the cleaning water passes through the cleaning water passage of the shaft for driving the valve body. It is injected into the extraction chamber through the wash water passage of the valve body. By spraying this cleaning water, the dirt adhering to the inner surface of the extraction chamber is washed away.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. It should be noted that components having the same functions as those in FIGS. 4 to 9 will be described with the same reference numerals.

In the extraction / filtration apparatus of the present invention, as shown in FIG. 1, the shaft 23 for driving the valve body 6 for closing the upper opening 5 of the extraction chamber 4 is rotatably connected to one end of a lever 24 by a pin 25. Has been done. An intermediate portion of the lever 24 is rotatably supported around a fulcrum 35, and a cam roller shaft 27 having a roller 26 for detecting the valve opening / closing cam 16 attached to the other end of the lever 24 is rotated by a pin 28. It is freely pivoted. The rotation of the cam roller shaft 27 is restricted by the guide 29, and the cam roller shaft 27 moves up and down in a direction perpendicular to the cam surface of the valve opening / closing cam 16.

As shown in FIGS. 2 and 3, a wash water passage 30 is formed in the valve body 6 and the shaft 23, and the wash water passage 30 formed in the valve body 6 extends toward the outer periphery of the valve body 6. And is extending radially.

A pump P is attached to the shaft 23 via a hose 31.
The two discharge sides are connected. The suction side of this pump P2 as a pressurizing device is connected to the hot water tank 32. The hot water tank 32 is a tank for producing hot water used for cooking, and tap water W is supplied to the hot water tank 32 from a reservoir tank 33 via a pump P1.

With this configuration, when the pump P2 is operated during cleaning of the extraction chamber 4, the valve body 6 is passed through the cleaning water passage 30 of the shaft 23 and the cleaning water passage 30 formed in the valve body 6.
The hot water H is jetted toward the inner surface of the extraction chamber 4 from the outlets 34 of the wash water passage 30 which are open at the outer periphery of the extraction chamber 4. With the operation of the pump P2, the output shaft 15 of the opening / closing device 7 rotates, and the lever 24 rotates from the solid line position to the virtual line position about the fulcrum 35 via the opening / closing cam 16 and the cam roller 26, and the shaft 23 moves. The valve body 6 is pushed down by the lever 24 and moves from the solid line position to the virtual line position.

The valve body 6 moves up and down inside the extraction chamber 4 in accordance with the rotation of the opening / closing cam 16, and the hot water H jetted from the valve body 6 collides with the inner surface of the extraction chamber 4 and the temperature of the extraction chamber 4 rises. Rinse away the dirt adhering to the inner surface.

In the above embodiment, the pump P2 for sending the wash water from the warm water tank 32 to the wash water passage 30 is the reservoir tank 33.
Although it was provided separately from the pump P1 for sending tap water from the hot water tank 32 to the hot water tank 32, the discharge path of the pump P1 is the first path for supplying tap water to the hot water tank 32 and the second path for supplying tap water to the wash water passage 30. A valve for switching to the
2 can be omitted.

In each of the above embodiments, the extraction chamber 4 is used for cleaning.
Although it has been described that the hot water H is injected into the above, the cleaning efficiency is further improved by adding the detergent instead of the hot water H.

[0019]

According to the first aspect of the invention, the raw material is put into the extraction chamber through the upper opening of the extraction chamber of the brewer unit, and after the introduction, the valve body is pressed against the valve seat from the inside of the extraction chamber to open the upper opening. In a cup-type vending machine that closes, pressurizes the extraction chamber, forcibly filters the mixture of hot water and raw material with a filter, and dispenses the extraction filtrate into a cup, the valve element and the shaft that drives this valve element Since the wash water passage was formed and a pressurizing device was provided to send the wash water under pressure to the wash water passage, the wash water is sprayed onto the inner surface of the extraction chamber while raising and lowering the valve body to remove dirt adhering to the inner surface of the extraction chamber. It can be washed out more efficiently than before.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a shaft and a valve body of the device.

FIG. 3 is a bottom view of a valve body of the same device.

FIG. 4 is a front view of a conventional extraction and filtration device.

FIG. 5 is a cross-sectional view of a step of charging a raw material and hot water of a conventional extraction and filtration device.

FIG. 6 is a cross-sectional view of a stirring process of a conventional extraction filtration device.

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

FIG. 8 is a cross-sectional view of a step of removing a raw material slag of a conventional extraction and filtration device.

FIG. 9 is an explanatory diagram of a cleaning process of a conventional extraction and filtration device.

[Explanation of symbols]

 1 Brewer unit 3 Filter receiver 4 Extraction chamber 11 Mixed liquid 12 Paper filter [filter] 16 Open / close cam 23 Shaft 24 Lever 30 Wash water passage 32 Hot water tank 33 Reservoir tank 34 Outlet P2 pump [pressurizer]

Claims (3)

[Claims] 1. A raw material is introduced into the extraction chamber from the upper opening of the extraction chamber of the brewer unit, and after the introduction, the valve body is pressed against the valve seat from the inside of the extraction chamber to close the upper opening and pressurize the extraction chamber. Forcibly filter the mixture of hot water and raw material with a filter,
In a cup-type vending machine that dispenses the extracted filtrate into a cup, a washing water passage is formed in the valve body and a shaft that drives the valve body, and an automatic pressurizing device is provided to pump the washing water into the washing water passage. Extraction filtering device for vending machines. 2. The extraction and filtration device for a vending machine according to claim 1, wherein the pressurizing device is a pump for supplying hot water from the hot water tank. 3. The extraction / filtering device for a vending machine according to claim 1, wherein the pressurizing device comprises a pump for switching the water in the reservoir tank to the hot water tank and the wash water passage.