JPH07313368A - Pneumatic feeding type beverage extractor - Google Patents

Abstract

PURPOSE:To eliminate the hazard of burning and a problem of wetting the surrounding area while dispensing with a solenoid valve to lower the cost due to the simplification of the construction. CONSTITUTION:This apparatus is provided with a pneumatic feeding means 14 to force air into a sealed container 13, an opening/closing means 26 to open or close a pipe for making a space within the sealed container 13 communicate with the outside side and an operation means to drive the pneumatic feeding means 14. Moreover, an opening/closing means 26 is provided to open or close the pipe communicating between the space within the sealed container 13 and the outside by moving operation of the operation means for driving the pneumatic feeding means 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-fed beverage extractor for extracting an extracted beverage such as coffee, storing the extracted beverage, and discharging the stored extracted beverage by feeding pressurized air. .

[0002]

2. Description of the Related Art A conventional pneumatic feed beverage extraction device of this type was filed by the applicant of the present application on Dec. 11, 1992, in Japanese Patent Application No. 4-3.
There is a patent application as Japanese Patent No. 31658 shown in FIG.

This beverage extraction device 51 is provided with a hot water supply section 52.
And a extracting section 53 and a coffee liquid storage section 54.
The hot water supply unit 52 includes a hot water tank 55 and a heater 56. When water is supplied from the water supply port 57 to the hot water tank 55 through the water supply pipe 58, the same amount of hot water as that supplied is siphoned. According to the above principle, it is sent out to the extraction part 53 through the hot water supply pipe 59.

A paper filter 61 into which ground coffee beans 60 are put is arranged in the extraction section 53, and the hot and cold water poured into the extraction section 53 extracts coffee components in the ground beans 60 to extract a coffee liquid. Thus, the coffee liquid is taken out from the coffee liquid outlet 62 at the bottom of the extraction unit 53. The coffee liquid reservoir 54 is provided below the coffee liquid outlet 62, and includes a sealed container 63, an air pump (air pressure feeding means), and a solenoid valve 65 (open / close valve).

The hermetic container 63 has a coffee liquid outlet 62.
It is disposed on the heat retaining heater 66 provided below the. The sealed container 63 includes a container body 67 having an open upper end and a lid 68 that closes the upper end of the container body 67. The inside of the sealed container 63 is sealed between the lid body 68 and the container body 67. A sealing material 69 is provided.

A coffee liquid inlet / outlet 70 is formed in the center of the lid 68 so as to face the coffee liquid outlet 62. A lead-out guide hole 71 is formed inside the lid 68. The outlet guide hole 71 has an inner end opened to the coffee liquid inlet / outlet 70, and an outer end opened to the side surface of the lid 68, and a nozzle 72 is attached to the outer end. A coffee liquid inlet / outlet pipe 73 is erected inside the sealed container 63, and its upper end is connected to a lid 68 and communicates with a coffee liquid inlet / outlet 70. Further, the lower end of the coffee liquid introducing / discharging pipe 73 extends to the bottom surface of the container body 67.

An air vent hole 74 is formed in the lid 68, and the air pump 64 is connected to the air vent hole 74 via an air tube 75. The solenoid valve 65 is provided in the middle of the air tube 75. A switch 76 is connected to the air pump 64. The switch 76 is also provided on the outer surface of the beverage extraction device 51, and is connected to the air pump 64 by wiring (not shown). The air pump 64 is operated while the switch 76 is pressed.

During the operation of injecting the coffee liquid, the coffee liquid dropped downward from the above-mentioned coffee liquid outlet 62 is covered by the lid 6.
Coffee liquid introduction outlet 7 from coffee liquid introduction outlet 70 of 8
It is stored in the container body 67 through 3. At this time, the solenoid valve 65 is kept open. Therefore, even if the storage of the coffee liquid progresses and is blocked by the coffee liquid at the lower end of the coffee liquid inlet / outlet pipe 73, the inside of the hermetically sealed container 63 is not sealed, and the air in the hermetically sealed container is released to the outside via the solenoid valve 65. Is discharged to. Therefore, the coffee liquid can be stored up to almost the entire space in the container 63.

When pouring coffee liquid into the cup 77, the electromagnetic valve 65 is first closed to seal the inside of the hermetic container 63, and then the switch 76 is pressed to drive the air pump 64 to drive the air into the hermetic container 63. Pump air. The internal pressure of the airtightly sealed container 63 increases, and as the internal pressure increases, the coffee liquid rises in the coffee liquid introduction / exit pipe 73 to reach the coffee liquid introduction / outlet 70, and is guided from the discharge guide hole 71 to the nozzle 72 to the cup 72. It is poured into 77.

Further, as a method for taking out a beverage such as coffee liquid from a sealed container, an actual open-air 2-148222 is used, and as a method for further taking out with a pressurized air, Japanese Patent Laid-Open No. 4-1355.
16 are disclosed.

[0011]

In the conventional beverage brewing apparatus 51, the air in the sealed vessel 63 is supplied to the inside of the beverage brewing apparatus 51 through the solenoid valve 65 during the coffee liquid extraction / injection storage operation in the sealed vessel 63. Is discharged to. Since the coffee liquid extracted at this time has a high temperature, water vapor is generated in the sealed container 63, and this water vapor is guided to the solenoid valve 65 through the air vent hole 74 and the air tube 75, so that the internal parts are rusted due to the water content. Poor operation or accumulation of water vapor may cause water droplets to block the air vent passage in the solenoid valve.

Further, there is a possibility that the solenoid valve may remain closed due to a failure of the solenoid valve itself, a drive circuit failure or the like. In such a state, during the operation of extracting and injecting the coffee liquid into the hermetically sealed container 63, the coffee liquid is not stored in the container and flows out from the nozzle 72, which may cause a risk of burns and wet the surroundings.

Further, water vapor or water drops are discharged into the beverage extracting device 51 via the electromagnetic valve 65, and the humidity inside the coffee extracting device 51 rises, causing problems such as rusting of internal parts and deterioration of electrical insulation of electric parts. There was also. In addition, there is a possibility that water vapor or water droplets may enter the inside of the air pump 64, causing a problem of deterioration of the air pump 64. Further, since the solenoid valve is used as the air bleeding valve, the solenoid valve and its drive circuit are expensive. Further, in the operation of pouring the coffee liquid into the cup, there is a problem in that the coffee liquid may overflow from the coffee liquid introduction outlet 70 when the pumping capacity is high due to the variation in the capacity of the air pump 64.

Therefore, it is an object of the present invention to provide an air pressure type beverage brewing apparatus having a simple structure, safety, and stable coffee liquid storage / pressure feeding operation.

[0015]

In order to achieve such an object, the pneumatic feed type beverage extraction device of the present invention is defined by claim 1.
In the invention described, a beverage introduction outlet is formed at the upper end, and a sealed container provided with a beverage introduction outlet pipe in which the upper end communicates with the beverage introduction outlet and the lower end reaches the container bottom, and in the sealed container. Air pressure feeding means for pressure feeding air,
By opening / closing means for opening / closing a pipe that communicates the space inside the sealed container with the outside, operating means for driving the space pressure feeding means, and up / down or forward / backward movement of the operating means for driving the air pressure feeding means, It is constituted by an opening / closing means for opening / closing a pipe that communicates the space inside the sealed container with the outside.

Further, in the invention described in claim 2, in addition to the structure of the invention described in claim 1, the opening / closing means compresses a flexible pipe such as rubber or vinyl from the outside or shuts off inside the pipe. The means is inserted, or the end of the tube is opened and closed by means of external closing means.

The invention according to claim 3 is the same as claim 1
In addition to the configuration of the invention described above, the operating means for driving the air pressure feeding means is constituted by an adjusting means for restricting the maximum movement amount of vertical or forward / backward movement operation.

Further, in the invention according to claim 4, a beverage introducing outlet is formed at an upper end, and a beverage introducing outlet pipe having an upper end communicating with the beverage introducing outlet and a lower end reaching a container bottom is hermetically sealed. A container, an air pressure feeding means for feeding air into the hermetically sealed container, an opening / closing means for opening / closing a pipe for communicating the internal space of the hermetically sealed container with the outside, and a drainage container and the opening / closing means for communicating with the outside. It is composed of a pipe that guides the pipe to a drainage container.

Further, the invention according to claim 5 is the same as claim 4
In addition to the configuration of the invention described, the drainage container has a structure that also serves as a cup mounting table. Further, in the invention of claim 6, a beverage introduction outlet is formed at the upper end,
Inside, a sealed container provided with a beverage introduction pipe whose upper end communicates with the beverage introduction outlet and whose lower end reaches the container bottom, air pressure feeding means for feeding air into the sealed container, and the sealed container inner space. An opening / closing means for opening / closing a pipe communicating with the outside, a connecting pipe communicating with the air pressure feeding means, and the sealed container and the opening / closing means are opened from the air pressure feeding means in the direction of the sealed container and the opening / closing means and sealed. The check valve is configured to close from the container and the opening / closing means in the direction of the air pressure feeding means.

Further, the invention according to claim 7 is a hermetically sealed container having a beverage introduction outlet formed at an upper end thereof, and a beverage introduction outlet pipe having an upper end communicating with the beverage introduction outlet and a lower end reaching a container bottom. An air pressure feeding means for feeding air into the hermetically sealed container, an opening / closing means for opening and closing a pipe communicating the internal space of the hermetically sealed container with the outside, and the hermetically sealed container,
An accumulator is provided in a connecting pipe that communicates the air pressure feeding means and the opening / closing means.

In addition to the configuration of the invention of claim 7, the invention of claim 8 is an accumulator in which the bottom surface portion of the accumulator has a structure inclining upward in the direction of the sealed container. It is a thing.

Further, the invention according to claim 9 is a hermetically sealed container having a beverage introduction outlet formed at an upper end thereof, and a beverage introduction outlet pipe having an upper end communicating with the beverage introduction outlet and a lower end reaching a container bottom. And an air pressure feeding means for feeding air to the hermetically sealed container, and an opening and closing means for closing the pipe communicating the space inside the hermetically sealed container with the outside by the air pressure only when the air pressure is sent by the air pressure feeding means. is there.

[0023]

According to the configuration of the invention as set forth in claim 1, the pneumatic feed type beverage extraction device of the present invention has the above-mentioned construction, and is operated by the vertical or forward / backward movement of the operating means for driving the pneumatic feed means (air pump). By opening and closing a pipe that connects the space inside the sealed container and the outside, coffee liquid is extracted and injected into the sealed container at the time of opening, and coffee liquid is pressure-fed into the cup by air feeding of an air pump at the time of closing. You can

According to the second aspect of the present invention, a flexible pipe such as rubber or vinyl is externally used as the opening / closing means for opening / closing the pipe communicating the space inside the sealed container with the outside. It can be compressed and opened / closed, or a shielding means can be inserted inside the tube to open / close, or the end of the tube can be opened / closed by external closing means. Further, according to the configuration of the invention described in claim 3, the maximum movement amount of the up-down or forward-backward movement operation of the operating means for driving the air pressure feeding means is regulated, and when the coffee liquid is pressure-fed and poured into the cup, the inside of the sealed container is The pressure can be adjusted.

Further, according to the structure of the invention described in claim 4, it is possible to discharge the water vapor and water droplets generated during the extraction and injection operation of the coffee liquid into the sealed container to the drain container.

According to the fifth aspect of the present invention, the drainage container can be made compact by also including a cup mounting table. According to the invention of claim 6, the check valve opens from the air pressure feeding means toward the sealed container and the opening / closing means and closes from the sealed container and opening / closing means toward the air pressure feeding means to the air pump. It is possible to prevent the intrusion of water vapor and water droplets and to promote the discharge to the outside. According to the configuration of the invention as set forth in claim 7, water drops generated when the coffee liquid is extracted and injected into the sealed container are accumulated in the accumulator, and are returned to the sealed container at the time of pressure-feeding into the cup. You can Further, according to the structure of the invention described in claim 8, it is possible to return all the water droplets accumulated in the accumulator to the sealed container at the time of pouring by pressure delivery to the cup.

Further, according to the structure of the invention described in claim 9, the pipe for communicating the space inside the sealed container with the outside is closed on the side of the air pump when the coffee liquid is injected into the sealed container. The discharge side of water vapor and water drops is opened, and when the coffee liquid is pressure-fed and poured into the cup, it can be closed by the air pressure of the air pump.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pneumatically fed beverage extraction device of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of an air pressure type beverage extraction device which is an embodiment of the present invention.

The beverage extraction device 1 comprises a hot water supply unit 2, an extraction unit 3 and a coffee liquid storage unit 4. The hot water supply unit 2 is provided with a hot water tank 5 and a heater 6. When water is supplied from the water supply port 7 to the hot water tank 5 through the water supply pipe 8, the same amount of hot water as that supplied is siphoned. According to the above principle, the water is supplied to the extraction unit 3 via the hot and cold water supply pipe 9. Ground coffee 10 in the extraction section 3
The paper filter 11 in which the water is put in is arranged, and the hot water poured into the extraction unit 3 extracts the coffee component in the ground beans 10 to become coffee liquid, and the coffee liquid outlet 12 at the bottom of the extraction unit 3 It is designed to drip downward from.

The hermetic container 13 is a coffee liquid outlet 12
It is arranged on the heat insulation heater 16 provided below. The sealed container 13 includes a container body 17 having an open upper end, and a lid 18 that closes the upper end of the container body 17, and the sealed container 13 is provided between the lid 18 and the container body 17.
A sealing material 19 that seals the inside is provided.

A coffee liquid inlet / outlet 20 is formed in the center of the lid 18 so as to face the coffee liquid outlet 12. A lead-out guide hole 21 is formed inside the lid 18. The outlet guide hole 21 has an inner end opened to the coffee liquid inlet / outlet 20, and an outer end opened to the side surface of the lid 18, and a nozzle 22 is attached to the outer end. A coffee liquid inlet / outlet pipe 23 is erected inside the sealed container 13, and the upper end thereof is connected to the lid 18 and communicates with the coffee liquid inlet / outlet 20. Further, the lower end of the coffee liquid introducing / extracting pipe 23 extends to the bottom surface of the container body 17.

An air vent hole 24 is formed in the lid 18. The above configuration is the same as the conventional one.

In this embodiment, the air pump 14 and the sealed container 1 are used.
3 It is characterized by an open / close structure that opens and closes the pipe that connects the internal space and the outside. That is, the air vent hole 24 of the sealed container 13 is connected to the air tube opening / closing means 26 via the air tube 25, and further the air tube 30.
Also, it is connected to the air pump 14 (air pressure feeding means) via the check valve 15. Also, the air tube opening / closing means 2
One side of 6 is connected to the air tube 31, and the other end of this air tube 31 is opened inside the drainage container 28.

A drainboard 28 is provided with a drainboard 29 on the upper part thereof, and a cup 27 is loaded thereon. If the coffee liquid is poured from the nozzle 22 when there is no cup 27, the coffee liquid enters the drainage container 28 through the drainboard 29 and does not overflow to the surroundings. In addition, drainage container 2
8 is removable, and coffee liquid and water accumulated inside can be removed and discarded.

FIG. 6 shows an embodiment of the check valve 15. The inside is composed of a valve 601 and a spring 602. In the normal state, the valve 601 closes the tube on the side of the air pump 14 by the pressing of the spring 602, but when the air pump 14 is activated, the pressure-feeding force of air exceeds the pressing force of the spring 602 and the valve 60.
1 moves to the air tube 30 side, and the air flows through the check valve 15.

FIG. 2 shows an embodiment of the air tube opening / closing means 26.

The air tube 25 connected to the air vent hole 24 of the hermetically sealed container 13 is branched into two directions in a T shape inside the beverage extracting device 1, one of which is connected via the air tube 30 and the check valve 15. It is connected to the air pump 14. The other is an air tube 31, and the other end is opened inside the drainage container 28.

A part of the pouring lever 201, which is an operating means for driving the air pump 14 (pneumatic feeding means), projects to the outside of the beverage brewing apparatus 1, and in the normal state, the spring 20 is provided.
It is pushed up by the tension of 3. In this state, the switch 2 which is the operation detecting means of the dispensing lever 201
02 is OFF, and R at the lower end of the dispensing lever 201
The part is in a state where the air tube 31a is not pressed.

First, during the coffee liquid extraction / injection operation into the sealed container 13, the coffee liquid dropped downward from the coffee liquid outlet 12 at the bottom of the extraction unit 3 is supplied from the coffee liquid inlet 20 of the lid 18 to the coffee liquid. It is stored in the container body 17 through the introduction / extraction pipe 23. At this time, since the air tube 31 is open to the outside, the inside of the hermetically sealed container 13 is not sealed even if the storage of the coffee liquid progresses and the lower end of the coffee liquid inlet / outlet pipe 23 is closed by the coffee liquid. The air in the sealed container is discharged to the outside via the air tube 31.

Therefore, the coffee liquid can be stored up to almost the entire space in the container 13. Further, at this time, water vapor generated from the hot coffee liquid is discharged together with the air in the sealed container 13. This water vapor is in the air tube 2
While flowing through the inside of 5, 31, it is condensed into water droplets and finally discharged from the end of the air tube 31 into the drainage container 28.
Most of the water vapor and water drops are in the air tube 31.
However, in order to prevent these water vapor and water droplets from entering the air pump 14, the air tube 25,
At the branch portion of 30, 31, the tube 30a to the air pump 14 side is raised above the tube 25 on the sealed container 13 side, while the air tube 31 on the discharge side is lowered to the lower side and the check valve 15 is connected. Air leakage at the air pump 14 is blocked to prevent air / steam flow toward the air tube 30.

Next, the operation of pouring the coffee liquid into the cup 27 will be described. When pushing down the dispensing lever 201,
Inclined portion 201b integrally formed with the dispensing lever 201
Turns on the switch 202. The switch 202 is connected to the air pump 14 by a wire (not shown), and the air pump 14 operates while the switch 202 is ON, that is, while the dispensing lever 201 is pushed downward. Further, as shown by the broken line in FIG. 2, the R portion at the lower end of the dispensing lever 201 is lowered, and the flexible air tube 31a portion such as rubber or vinyl is crushed between the support table 204 and communication with the outside. Be cut off.

At this time, the air pump 14 is operating, and the air pumped by the air pump 14 pushes open the valve 601 (FIG. 6) in the check valve 15 and seals it through the air tubes 30 and 25 and the air vent hole 24. It is pumped into the container 13. The internal pressure in the sealed container 13 to which air is pumped increases,
As the internal pressure increases, the coffee liquid rises in the coffee liquid inlet / outlet pipe 23 to reach the coffee liquid inlet / outlet 20, and is guided from the outlet guide hole 21 to the nozzle 22 and poured into the cup 27.

When the cup 27 is filled with the coffee liquid, the pressing operation of the switch 201 is released to complete the injection of the coffee liquid. That is, the dispensing lever 201 returns upward due to the tension of the spring 203, the switch 202 is turned off, and the air pump is stopped. Furthermore, since the pressing of the air tube 31a is released and the air tube 31 is communicated with the outside, the air pressure remaining in the sealed container 13 is quickly discharged to the outside through the air tube 31. As a result, the coffee liquid that has risen in the coffee liquid introduction / exit pipe 23 and has reached the coffee liquid introduction / exit port 20 quickly returns to the inside of the hermetically sealed container 13, and the breakage of the coffee liquid in the nozzle 22 is improved.

In the above-mentioned operation of pouring the coffee liquid into the cup 27, when the internal pressure in the airtightly sealed container 13 is excessively increased due to the variation in the air pressure feeding capacity of the air pump 14, the coffee liquid introduction / extraction pipe 23 is raised. Coffee liquid may overflow from the coffee liquid inlet / outlet 20. For this reason, a stopper 205 that can be moved up and down is provided, and when the dispensing lever 201 is pushed down, the dispensing lever 2
The upper end portion 201c of 01 comes in contact with the stopper 205 so that the stroke of pushing down can be changed. That is, by raising the stopper 205 upward, the stroke by which the dispensing lever 201 is pressed down becomes small, and the crushing of the air tube 31a becomes incomplete, and some air is discharged from the air tube 31 to the outside, and the sealed container 13 The internal pressure inside can be adjusted.

As described above, in this example, the air is evacuated from the hermetically sealed container 13 which is conventionally performed by the solenoid valve, and the discharging lever 20 is used.
Since it is realized by a simple mechanism linked to 1, the coffee liquid is not stored in the container at the time of the coffee liquid extraction / injection storage operation in the sealed container 13 due to the blockage of the air vent portion, and the coffee liquid flows out from the nozzle 22 to the outside. There is no risk of burns or getting wet in the surroundings.The solenoid valve is not required and the structure is simple, so the cost can be reduced, and the diameter of the air tube that communicates with the outside, which is difficult with a solenoid valve, can be increased.・ Water droplets can be discharged smoothly.

Further, since the steam or water drops are discharged to the drain container 28 through the air tube 31, the water drops and steam are not discharged inside the coffee extracting apparatus 1 and the internal parts are not adversely affected. Further, since the solenoid valve is not used, the cost can be reduced, and the variation in the capacity of the air pump 14 can be adjusted, so that the pouring operation into the cup is stabilized. Further, since the drainage container 28 also serves as the cup mounting table, there is no need to provide a dedicated cup mounting table and the cost does not increase.

At the branch portion of the air tubes 25, 30, and 31, the tube 30a to the air pump 14 side is raised above the tube 25 on the sealed container 13 side, while the air tube 31 on the discharge side is lowered to the lower side. , The check valve 15 is connected to block air leakage in the air pump 14 to prevent air / water vapor from flowing toward the air tube 30, prevent water vapor / water droplets from entering the air pump 14, and prevent deterioration of the air pump 14. I'm out.

FIG. 3 shows another embodiment of the air tube opening / closing means 26. Although it is basically the same as the configuration of FIG. 2, an opening / closing part 304 having an open top and a seal packing is provided in the middle of the air tubes 25 and 30. In the normal state, the dispensing lever 301 is pushed upward by the tension of the spring 303, and in this state, the switch 302 is off, and the dispensing lever 301a
The section is located at the upper end of the opening / closing section 304, and the opening / closing section 304 is in an open state.

First, during the operation of extracting and injecting the coffee liquid into the sealed container 13, since the opening / closing portion 304 opens the air / water vapor / water droplets from the inside of the sealed container 13, the drain container 28 via the air tube 31. Is discharged to. Next, the operation of pouring the coffee liquid into the cup 27 will be described. When the dispensing lever 301 is pushed downward, the inclined portion 301b integrally formed with the dispensing lever 301 turns the switch 302 to the O position.
N The switch 302 is connected to the air pump 14 by a wiring (not shown), and the air pump 14 operates while the switch 302 is ON, that is, while the dispensing lever 301 is pushed downward.

Further, as shown by the broken line in FIG. 30, the 301a portion at the lower end of the dispensing lever 301 is lowered, the opening / closing portion 304 is closed, and communication with the outside is cut off. The opening at the upper part of the opening / closing part 304 and the 301a part at the lower end of the pouring lever 301 are sealed by the packing 306 so that there is no air leakage. Therefore, the air pumped from the air pump 14 is
Inside, coffee liquid is poured out. Further, the air pressure sent from the air pump 14 is the same as in FIG.
The position can be adjusted. That is, the dispensing lever 3
The way in which the 301a portion at the lower end of 01 enters the opening / closing portion 304 is changed, and the air leakage at the opening / closing portion 304 can be changed.

As described above, in this example, the air tube 3
When opening and closing 04, the 301a portion at the lower end of the pouring lever 301 is inserted into the air tube 304.
4 is not damaged and durability is increased.

FIG. 4 shows another embodiment of the air tube opening / closing means 26. The feature of this is that the accumulator 405 is provided in the middle of the air tube (connection pipe) and that the end surface of the air tube 404 is closed. An accumulator 405 is provided in the middle of the air tube 25 connected to the sealed container 13 and the air tube 30 connected to the air pump 14. The bottom surface 405a of the accumulator 405 is the air tube 2
5, that is, the structure is such that the air tube 30 rises and inclines toward the hermetically sealed container 13, and the air tube 404 is located on the air tube 30 side.
The other end of the air tube 404 is open to the outside.

The spout button 401 is the spring 4 in the normal state.
It is pushed to the front side by the tension of 03, the switch 402 is OFF in this state, and the U-shaped portion 401a at the other end of the spout button 401 is in a state where the air tube 404 is opened.

First, during the coffee liquid extraction / injection operation into the sealed container 13, air, water vapor, and water droplets from the sealed container 13 are open to the air tube 404. While flowing in the direction, water droplets are accumulated in the accumulator 405 during this.

Next, as for the operation of pouring the coffee liquid into the cup 27, when the pouring button 401 is pushed in, the inclined portion 401b integrally formed with the pouring button 401 turns on the switch 402. The switch 402 is connected to the air pump 14 by a wiring (not shown).
Is operated while the switch 402 is ON, that is, while the pouring button 401 is pressed. Further, as shown by the broken line in FIG. 4, the U-shaped portion 401a at the other end of the spout button 401 closes the end of the air tube 404, and the communication with the outside is blocked.

Therefore, the air pumped from the air pump 14 enters the sealed container 13 and the coffee liquid is poured out.
At this time, the water droplets accumulated in the accumulator 405 are returned to the inside of the sealed container 13 by pressure feeding of air, but the bottom surface 405a of the accumulator 405 has the air tube 2
5, that is, the water drops do not remain in the accumulator 405 because it is inclined upward toward the sealed container 13.

As described above, in this example, since the water droplets are accumulated in the accumulator 405, the drainage container 28 is not necessary, and when the coffee droplets accumulated in the accumulator 405 are poured into the cup, they are sealed by air pressure feeding. Since it is returned to the container, the accumulator 405 does not overflow with water drops. Also, the air tube 4
When opening and closing 04, the U-shaped portion 401 at the other end of the spout button 401
Since the a portion is pressed against the end surface of the air tube 404, the air tube 404 is not damaged and the durability is increased.

FIG. 5 shows still another embodiment of the air tube opening / closing means 26. This is characterized in that a movable piston 501 having a spring 503 is provided inside the air tube. The piston 502 is in close contact with the air tube with a packing 502. In the normal state, the piston 501 closes the air tube 30 connected to the air pump 14 by the pulling force of the spring 503.

First, during the coffee liquid extraction / injection operation into the sealed container 13, the air tube 30 is closed by air, water vapor, and water droplets from the sealed container 13, and the air tube 31 is opened. It is discharged to the drainage container 28 via 31. Next, the cup of coffee liquid 27
In the pouring operation, a switch (not shown) is turned on when a pouring lever (not shown) is operated, and the air pump 14 is operated while the switch is on, that is, while the pouring lever is operated. When the air pump 14 operates, air is pumped to the air tube 30, and the piston 501
This air pressure moves to the position where the air tube 31 is closed as shown by the broken line in FIG. 3, and closes the opening to the outside.

Therefore, the air pumped from the air pump 14 enters the sealed container 13 and the coffee liquid is poured out.
When the air pump 14 is stopped, the air pressure applied to the piston 501 disappears, so the piston 501 is replaced by the spring 50.
The tension of 1 restores the original position.

As described above, in this example, the air pump 14
Since the air tube is opened and closed by the air pressure of, the air tube interlocked with the pouring lever does not require an opening and closing structure, which is a simple structure.

FIG. 7 shows an embodiment of venting the airtight container 13. In this, the lid 18 of the sealed container 13 is attached to the sealed container 1
3 is provided with a small hole opening 701 for communicating the inner space with the outside. In this case, the air tube from the air pump 14 is directly connected to the air vent hole 24. At the time of pouring and injecting coffee liquid into the sealed container 13,
Air and water vapor from inside the sealed container 13 is a small hole opening 701.
Is discharged from the outside. Therefore, water vapor does not enter the air tube to form water droplets.

During the operation of pouring coffee liquid into the cup, air is inserted from the air vent hole 24 by an air pump having a capacity larger than the amount of air discharged from the small hole opening 701.
The amount of air that is pumped into the sealed container 13 depends on the small hole opening 701.
The coffee liquid can be poured out by using an air pump having a larger amount of air discharged to the outside.

Further, the adjustment screw 70 is attached to the small hole opening 701.
2 is provided so that the amount of air released from the small hole opening 701 can be adjusted, which corresponds to the variation in the capacity of the air pump. That is, during the operation of pouring the coffee liquid into the cup, the internal pressure of the air-pumped sealed container 13 is excessively increased due to the variation of the air pumping capacity of the air pump, and the coffee liquid having risen in the coffee liquid introduction / exhaust pipe 23 is The overflow from the coffee liquid inlet / outlet 20 is made possible by adjusting the opening diameter of the small hole opening 701 with the adjusting screw 702.

As described above, in this example, air, water vapor,
No opening / closing means for draining water is required and the structure is very simple. In each of the above-mentioned embodiments, some of the constituent means have been described in combination, but they may be implemented independently.

In addition to the present inventions of claims 1 to 9, the pneumatic feed type beverage extraction apparatus of the present invention has a beverage introduction outlet formed at the upper end of the invention, and the beverage introduction outlet is formed at the upper end inside thereof. And a sealed container having a beverage introduction / exhaust pipe whose lower end reaches the container bottom, and an air pumping means for pumping air into the sealed container, and the sealed container is provided on a lid for closing the main body of the sealed container. If the structure of the pneumatic feed type beverage extraction device provided with a small hole opening that communicates the inner space and the outside, no opening / closing means for removing air, water vapor, and water droplets is required, which is a very simple structure. It is expected that the operation reliability is improved and the cost can be reduced.

Further, in addition to the constitution of the first aspect of the present invention, if the constitution of the pneumatic feed type beverage brewing apparatus is provided with adjusting means for adjusting the opening diameter of the small hole opening, the effect of the constitution of the present invention will be obtained. In addition, it is possible to adjust the variation in the capacity of the air pump (adjust the air removal amount at the small hole opening and lower the internal pressure of the sealed container), so the pouring operation into the cup is stable and the coffee in the sealed container is stable. The effect that the coffee liquid does not overflow from the liquid introduction outlet is obtained.

According to the present invention, a beverage introduction outlet is formed at the upper end, and a sealed container provided with a beverage introduction outlet pipe having an upper end communicating with the beverage introduction outlet and a lower end reaching the container is provided inside the sealed container. Air pressure feeding means for pressure feeding air,
The sealed container inner space, a three-way pipe for communicating the air pressure feeding means and the outside are provided, and the pipe communicating with the air pressure feeding means is raised above the pipe communicating with the sealed container inner space, and If the air communication type beverage extraction device is constructed so that the pipe that communicates with the outside stands downward with respect to the pipe that communicates with the space inside the sealed container, it prevents the flow of water vapor and water droplets to the air pump side, prevents intrusion, and deteriorates the air pump. Can be prevented, and water droplets can be easily discharged to the outside.

[0069]

Since the pneumatic feed type beverage extraction device of the present invention has the above-mentioned constitution, in the invention of claim 1, the air-bleeding lever (button) for venting air from the hermetically sealed container, which is conventionally performed by the solenoid valve, is used. ), The coffee liquor is not stored in the container when the coffee liquid is extracted and stored and stored in the sealed container, and the coffee liquid flows out from the nozzle to the outside due to the blockage of the air vent, which may cause burns. There is no danger or wetting of the surroundings, cost is reduced because the solenoid valve is not required and the structure is simple, and the diameter of the air tube that communicates to the outside, which is difficult with a solenoid valve, can be increased. The effect is that the discharge of can be done smoothly.

Further, in the invention described in claim 2, in addition to the effect of the invention described in claim 1, the structure is simple and the cost can be reduced, and there is no structural air leakage at the air tube opening / closing part. There is an effect that durability is increased without damaging the air tube (opening / closing portion) when opening / closing the air tube. According to the invention of claim 3, in addition to the effect of the invention of claim 1, it is possible to adjust the variation of the capacity of the air pump (by adjusting the air venting amount at the air tube opening / closing part to reduce the internal pressure of the sealed container). Lower)
There is an effect that the pouring operation into the cup is stable and the coffee liquid does not overflow from the coffee liquid introduction outlet of the sealed container.

Further, in the invention of claim 4, water vapor or water droplets generated at the time of the operation for extracting and injecting the coffee liquid into the hermetically-sealed container are discharged into the drainage container through the air tube, so that the coffee-extracting device is provided with the inside thereof. It has the effect of not discharging water droplets or water vapor and having no adverse effect on internal parts. Further, in the invention of claim 5, in addition to the effect of the invention of claim 4, since the drainage container also serves as the cup mounting table, there is no effect that cost is not increased without providing a dedicated cup mounting table. It plays.

Further, in the sixth aspect of the present invention, water vapor or water droplets generated during the operation of extracting and injecting the coffee liquid into the hermetically-sealed container do not enter the air pump and do not have an adverse effect. In addition, to prevent air leaks from the air pump, the flow of air and water vapor in the direction of the air tube (outward discharge direction) is promoted to prevent the ingress of water vapor and water droplets into the air pump, and the outside of water vapor and water droplets. This has the effect of enabling smooth discharge to the (drainage container).

In the invention according to claim 7,
Drain container 28 for accumulating water drops in the accumulator
Is unnecessary and has an effect that the cost can be reduced.

In addition, in the invention described in claim 8, in addition to the invention described in claim 7, the water droplets accumulated in the accumulator are stored in a hermetically sealed container by pumping air during the pumping operation of the coffee liquid to the cup. The effect is that the accumulator will not overflow with water drops.

Further, according to the invention of claim 9, since the air tube is opened and closed by the air pressure of the air pump, the air tube interlocking with the pouring lever does not require a structure for opening and closing and has a simple structure. And the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of an air pressure type beverage extraction device which is an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part showing an embodiment of the air tube opening / closing means of FIG.

FIG. 3 is an enlarged sectional view of an essential part showing another embodiment of the air tube opening / closing means of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part showing another embodiment of the air tube opening / closing means of FIG.

FIG. 5 is an enlarged cross-sectional view of a main part showing still another embodiment of the air tube opening / closing means of FIG. 1.

FIG. 6 is an enlarged cross-sectional view of an essential part showing an embodiment of the stop valve of FIG.

7 is an enlarged sectional view of an essential part showing an embodiment of air venting of the sealed container of FIG.

FIG. 8 is a cross-sectional view of essential parts showing the structure of a conventional pneumatic feed type beverage extraction device.

[Explanation of reference numerals] 13 airtight container 14 air pump (air pressure feeding means) 15 check valve 18 lid 20 coffee liquid introduction outlet (beverage introduction outlet) 23 coffee liquid introduction outlet pipe (beverage introduction outlet pipe) 25 air tube (three-way) 26) Opening / closing means 28 Drainage container 30 Air tube (3-way tube) 31 Air tube (3-way tube) 201 Discharge lever (opening / closing means) 202 Switch (operating means) 204 Support (opening / closing means) 205 Stopper (adjusting means) ) 301 pouring lever (opening / closing means) 301a pouring lever lower end (shielding means) 302 switch (operating means) 305 stopper (adjusting means) 401 pouring button (opening / closing means) 401a U-shaped part at the other end of the pouring button ( Closing means) 402 Switch (operating means) 405 Accumulator 501 Piston (opening / closing means) 701 Small hole opening Part 702 adjusting screw (adjusting means)

Claims (9)

[Claims] 1. A hermetically sealed container having a beverage introduction outlet formed at an upper end thereof, the upper end of which communicates with the beverage introduction outlet and a lower end of which extends to a container bottom, and an air inside the hermetically sealed container. An air pressure feeding means for pressure feeding, a opening and closing means for opening and closing a pipe communicating the space inside the sealed container with the outside, and an operating means for driving the space pressure feeding means, and an operation for driving the air pressure feeding means An air-fed beverage brewing apparatus comprising opening / closing means for opening / closing a pipe that communicates the space inside the sealed container with the outside by moving the means up and down or back and forth. 2. The opening / closing means compresses a flexible tube such as rubber or vinyl from the outside, inserts a blocking means inside the tube, or opens / closes the end of the tube by an external closing means. The pneumatically-fed beverage extraction device according to claim 1, wherein 3. The pneumatically fed beverage brewing apparatus according to claim 1, further comprising adjusting means for regulating a maximum movement amount of an up / down or forward / backward movement operation of an operation means for driving the air pressure feeding means. 4. A hermetically sealed container having a beverage introduction outlet formed at an upper end thereof, the upper end of which communicates with the beverage introduction outlet and a lower end of which extends to a container bottom, and an air inside the hermetically sealed container. And an opening / closing means for opening / closing a pipe communicating the space inside the sealed container and the outside, and a pipe connected to the opening / closing means and communicating with the outside is guided to a drainage container. Pneumatic delivery type beverage extraction device. 5. The pneumatic beverage dispenser according to claim 4, wherein the drainage container also serves as a cup mounting table. 6. A hermetically sealed container having a beverage introduction outlet formed at an upper end thereof, the upper end of which communicates with the beverage introduction outlet, and the lower end of which extends to a container bottom, and an air inside the hermetically sealed container. An air pressure feeding means for pressure feeding, and an opening and closing means for opening and closing a pipe that communicates the sealed container inner space and the outside, the air pressure feeding means, and a connecting pipe that communicates the sealed container and the opening and closing means, An air-fed beverage brewing apparatus comprising a check valve that opens from the air pressure feeding means toward the airtight container and the opening / closing means, and closes from the airtight container and opening / closing means toward the air pressure feeding means. 7. A sealed container having a beverage introduction outlet formed at an upper end thereof, the inside of which is connected to the beverage introduction outlet and the lower end of which extends to the bottom of the container, and a sealed container provided with air. And an opening / closing means for opening / closing a pipe that communicates the inner space of the sealed container with the outside, and the accumulator is connected to the connection pipe that communicates the sealed container with the air feeding means and the opening / closing means. An air-fed beverage extraction device characterized by comprising a vibrator. 8. The pneumatically fed beverage brewing apparatus according to claim 7, wherein the bottom surface of the accumulator has a structure that is inclined upward toward the sealed container. 9. A sealed container having a beverage introduction outlet formed at an upper end, a beverage introduction outlet pipe having an upper end communicating with the beverage introduction outlet and a lower end reaching the container bottom, and air in the sealed container. An air pressure feeding means for pressure feeding and an opening / closing means for opening / closing a pipe communicating the space inside the sealed container with the outside are provided, and the opening / closing means has a structure that is closed by the air pressure only when the air pressure feeding by the air pressure feeding means is performed. An air-fed beverage extraction device characterized by being present.