JP2003210337A - Inner stopper for air pot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an internal part washable by making an inner stopper for an air pot separable and to prevent the temperature of a content liquid from being lowered by supplying the content liquid into an inner container without removing the inner stopper. <P>SOLUTION: A cylindrical main body 1 of the inner stopper and an inner stopper lid 2 equipped with an introduction port 5 for pressurized air and an injection pipe 8 for the content liquid can be freely attached and detached. By attaching/detaching the main body 1 of the inner stopper and the inner stopper lid, a liquid injection passage cylinder 11 capable of attaching/detaching a connecting pipe 9 with the liquid injection pipe 8 formed on the inner stopper lid 2 and a safety valve cover 4 for holding a safety valve 6 and a hat-like valve holder 3 forming an air passage partitioned from the liquid injection passage cylinder are held. By separating the main body 1 of the inner stopper and the inner stopper lid, the valve holder 3 can be taken out and washed. Further, by forming the introduction port 5 for the pressurized air and the air passage to be communicated to the introduction port 5 and the inside of the inner container in a size capable of supplying the content liquid, the content liquid can be supplied into the inner vessel without removing the inner stopper. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on an opening of an inner container, supplies pressurized air into the inner container by a pump such as a bellows pump, and raises the inner pressure of the inner container to inject the content liquid outside the container. It is an invention relating to the structure of an inner plug for an air pot to be taken out.

[0002]

2. Description of the Related Art A conventional inner plug for an air pot fitted to an opening of an inner container, particularly, a device having a safety valve mechanism for preventing liquid leakage at the time of fall in a liquid injection passage supplies pressurized air into the container. It was generally assembled in a non-decomposable state by providing an air passage for this purpose and a liquid injection passage for leading the content liquid out of the container as the pressure inside the inner container increases. Further, the air passage formed in the conventional inner plug for the air pot has a size that allows only the air to pass therethrough, and not a size that allows the content liquid to pass therethrough.

[0003]

Since the conventional inner plug for an air pot is assembled in a non-decomposable state, the inside of the inner plug cannot be washed. Further, the conventional air pot inner plug is supposed to be removed when the content liquid is supplied into the inner container. Therefore, for example, in the case where the extracted hot coffee is put in the inner container and used for customer service as needed, there is a drawback that the temperature of the content liquid is lowered at the time of liquid supply. Furthermore, there is a problem in that the location of the removed inner stopper is also a problem.

In view of the above-mentioned drawbacks of the conventional inner plug for an air pot, the present invention has an inner plug which can be disassembled and washed, including the inside of the inner plug, preferably the inside of a safety valve mechanism arranged in a liquid injection passage. It is intended to provide. Another object of the present invention is to provide an inner stopper structure capable of supplying the content liquid into the inner container without removing the inner stopper.

[0005]

In order to achieve the above object, in the present invention, an inlet 5 for pressurized air, an air passage communicating with the inlet 5 and the inside of the inner container 7, and a pressure increase in the inner container are provided. Along with the liquid injection passage for discharging the content liquid to the outside of the device, and the internal stopper for the air pot provided with the safety valve mechanism for preventing liquid leakage at the time of fall in the liquid injection passage, the inner plug is a cylindrical inner plug body 1 Also, the cap-shaped inner plug lid 2 having the inlet 5 for pressurized air and the liquid injection pipe 8 for the content liquid is made detachable, and the safety valve mechanism is held therein by mounting the inner plug body 1 and the inner plug lid 2. Let

The air passage for the pressure air formed inside the detachable inner plug has an inlet 5 for the pressure air and an air passage communicating with the inlet 5 and the inner container in the inner container. If you make it large enough to supply the content liquid,
The inner solution can be supplied into the inner container without removing the inner stopper.

The specific structure of the safety valve mechanism held by the inner stopper body and the inner stopper lid is a cap-shaped valve receiving body 3 having an outer diameter which is in close contact with the inner surface of the inner stopper body 1 and / or the inner stopper lid 2. The valve receiving body 3 is provided with a connection pipe 9 for connection with a liquid injection pipe formed on the inner stopper lid, and a liquid passage cylinder 11 to which a safety valve cover 4 for holding a safety valve 6 can be attached and detached. A ventilation hole (10) is formed as an air passage in a state of being partitioned from the cylinder (11).

As another specific structure, as shown in FIG. 6, the inner plug body 1 has a cylindrical shape with a bottom wall 12, and this bottom wall
The safety valve cover 4 part for holding the safety valve 6 is formed on the valve 12, and the valve receiver 3 is arranged between the safety valve cover 4 part and the liquid injection pipe formed on the inner stopper lid 2, and the inner stopper body 1 and the middle stopper body 1 The valve receiving body 6 is held airtight by mounting the stopper lid 2, and a through hole 13 is formed in a part of the bottom wall 12 of the inner stopper body as an air passage.
Can be implemented by providing. Other,
By forming the outer peripheral wall 14 on the upper surface of the inner stopper lid 2 and forming it in a saucer shape, it is possible to prevent the liquid from spilling around when supplying the content liquid with the inner stopper attached. You can

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of an inner plug for an air pot according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view of the entire air pot with a part cut vertically, FIG.
FIG. 6 is a vertical cross-sectional view of the upper end portion of the air pot with the lid open.

The air pot shown in FIG. 1 is a vacuum bottle using a metal vacuum double bottle as the inner container 7,
A shoulder member 15 is attached to the upper end of the inner container 7, and an inner plug is attached to the opening 7a of the inner container 7 supported by the shoulder member 15. Shoulder member
On top of 15, attach a lid 16 that opens and closes using the back as a fulcrum,
Bellows pump 17 operated by lever 18 inside 16
Are arranged. The compressed air generated by the bellows pump 17 is discharged from the air supply packing 19 mounted on the bottom plate of the lid. The air supply packing 19 is in close contact with the inlet port 5 of the inner plug with the lid 16 closed, and the pressure air generated by the operation of the lever 18 is supplied into the inner container 7 through the inlet port 5.
As shown in FIG. 2, when the lid 16 is opened, the inner plug is exposed, so that it can be removed freely. In addition, the contents are stored in the inner container 7 through the inlet 5 that is open as shown by the black arrow. A liquid can be supplied.

The inner plug attached to the opening 7a of the inner container 7 is shown in FIG.
And, as shown in FIG. 4, it is composed of a cap-shaped inner plug lid 2 having an inlet 5 for pressurized air on its upper surface, and a cylindrical inner plug body 1 screwed to the lower end of the inner plug lid 2. The safety valve mechanism can be held inside by screwing the inner plug body 1 and the inner plug lid 2. The inner stopper lid 2 is provided with an inlet 5 on the upper surface and integrally formed with a liquid injection pipe 8 that communicates with the inside and outside of the cylinder. Further, an inner flange 20 is formed at the lower end of the tubular inner plug body 1 to tighten the inner plug body 1 to maintain the airtightness of the safety valve mechanism arranged inside. The inside plug lid 2 in the illustrated embodiment has a disk shape whose upper surface has a diameter larger than that of the cylindrical portion, and has an outer peripheral wall 14 formed into a dish or funnel shape. Further, an extension pipe 21 having a downward pouring port is connected to the liquid injection pipe 8 formed integrally with the inner stopper lid 2 as required.

As shown in FIG. 3, the safety valve mechanism internally held by the inner stopper body 1 and the inner stopper lid 2 is composed of a valve receiver 3, a safety valve cover 4 for holding a safety valve 6, and a valve seat cylinder 22. is doing. As shown in FIG. 5, the valve receiver 3 has a cap shape whose outer diameter is approximately equal to the inner diameter of the inner stopper lid and / or the inner stopper main body, and the connection pipe 9 connected to the liquid injection pipe of the inner stopper lid on the upper surface. And the wall for partitioning the inside of the cap-shaped cylinder causes the liquid passage cylinder 11
Is formed. And the connecting pipe 9 protruding upward
Communicates with the liquid passage cylinder 11. Therefore, when the inner plug body 1 is screwed with the valve receiving body 3 inserted, the lower end of the valve receiving body is lifted by the inner collar 20 formed at the lower end portion of the inner plug body 1, and the liquid filling of the inner stopper lid 2 is performed. When the pipe 8 and the connecting pipe 9 are fitted together, they are firmly held so as not to move. That is,
The inner stopper body 1 functions as a tightening ring.

A funnel-shaped safety valve cover 4 to which a pumping pipe 23 reaching the lower bottom of the inner container 7 is connected is detachably attached to the lower end of the liquid passage cylinder 11. Specifically, the upper end of the safety valve cover 4 is screwed onto the lower end of the liquid passage cylinder 11. By forming radial ribs 24 inside the funnel-shaped safety valve cover, the safety valve 6 having a conical lower surface can be supported while the content liquid passes through. In the embodiment shown in FIG. 5, the valve seat cylinder 22 is inserted into the liquid passage cylinder 11 and then the safety valve cover is screwed on to tighten and hold the valve seat cylinder 22. The safety valve cover may be one that can be attached and detached by simply inserting it instead of screwing. A partition wall 25 is provided on the valve seat cylinder 22, and a through hole is formed in the center of the partition wall 25.
By providing 26, when the air pot falls, the safety valve 6 moves to close the through hole 26 and prevent liquid leakage. By disposing the valve seat cylinder 22 inside the liquid passage cylinder 11, even if the connecting pipe 9 is provided at a position deviated from the center of the liquid passage cylinder, the safety valve 6 can reliably prevent liquid leakage. That is, when the center of the connecting pipe 9 and the center of the liquid passage cylinder 11 coincide with each other, the valve seat cylinder 22 is omitted and the safety valve 6 is omitted.
The opening portion of the connecting pipe 9 can also be closed by.

An outer portion of the liquid passage cylinder 11 inside the valve receiver 3 is opened as an air passage into the inner container 7 at a lower portion thereof, and a ventilation hole 10 is formed in a ceiling wall. As a result, the introduction port 5 of the inner plug lid 2 communicates with the inside of the inner container 7 through the ventilation hole 10. The introduction port 5 of the inner stopper lid 2 and the vent hole 10 of the valve receiver 3 are sized so that not only can pressurized air be supplied into the inner container, but also the content liquid can be supplied into the inner container. By making the size of the vent hole 10 larger than the introduction port 5 as a whole, the liquid supplied through the introduction hole 5 is supplied to the inner container 7 without accumulating in the inner stopper.
That is, by enlarging the introduction hole 5 and the vent hole 10, the content liquid can be supplied into the inner container 7 without removing the inner plug by opening the lid 16 of the air pot. For example, if the coffee coming out of the brewing machine is poured directly into the inner container 7,
The temperature drop of coffee can be minimized. Considering an ordinary coffee brewing machine, a hole having a diameter of about 10 to 15 mm may be used. At this time, if the outer peripheral wall 14 is formed on the upper surface of the inner stopper lid 2, it is possible to prevent the inner solution from spilling to the periphery during liquid supply.

As shown in FIG. 4, an annular packing 27 is attached to the outer peripheral surface of the inner plug lid 2, and the inner plug body 1 is held by being tightened. By mounting the packing 27, the packing 27 is brought into close contact with the opening 7a of the inner container, specifically, the opening portion of the shoulder member holding the opening portion of the inner container, thereby maintaining the airtightness of the air pot. it can. As described above, the inner plug according to the present invention is attached to the air pot and the lid 16 is closed as shown in FIG.
As shown by the arrow, the compressed air generated in the bellows pump 17 by the operation of the lever 18 passes through the inside of the inner stopper and is supplied into the inner container 7, and the content liquid passes from the pumping pipe 23 through the inside of the stopper and is poured. Liquid is injected outside the device through the liquid pipe 8 and the extension pipe 21.

In the opened state shown in FIG. 2, the content liquid can be supplied while the inner plug is attached as shown by the arrow, and the inner plug can be removed for cleaning. When cleaning the inner plug, all the parts are disassembled by separating the inner plug body 1 and the inner plug lid 2 and the safety valve cover 4 from the liquid passage cylinder 11 of the valve receiving body 3 to wash each part. can do. In order to prevent the safety valve 6 from being lost, it is preferable that the safety valve cover 4 cannot be separated. Even if the safety valve cover is fixed to the liquid passage cylinder 11, the insides of the inner plug body 1 and the inner plug lid can be cleaned.

FIG. 6 is a vertical sectional view showing another embodiment of the inner plug for an air pot of the present invention. In this embodiment, the whole is composed of the inner stopper lid 2, the inner stopper main body 1 and the valve receiver 3, and the inner stopper lid 2 and the inner stopper main body 1 are detachable. A liquid injection pipe 8 is integrally molded in the central portion of the inner stopper lid 2 screwed to the inner stopper main body 1, and the inner stopper main body 1 has a bottomed cylindrical shape.
The safety valve cover 4 is integrally formed at the center of the bottom wall 12 of the. The valve receiving body 3 has a cap shape as a whole, and a connecting pipe 9 is projected at a central position. The lower end of the valve receiver is fitted to the upper part of the safety valve cover 4 projecting on the upper surface of the bottom wall 12, and the connecting pipe 9 projecting upward is fitted to the liquid injection pipe 8 of the inner stopper lid 2. There is. Between the lower end of the valve receiver 3 and the bottom wall 12 of the inner plug body 1,
An annular packing 28 is attached.

In the inner plug for the air pot of the embodiment shown in FIG. 6, the safety valve 6 is arranged in the safety valve cover 4 portion of the inner plug body 1, and the connecting pipe 9 and the liquid injection pipe 8 of the valve receiver 3 are arranged.
By screwing the inner plug body 1 with the
The valve receiver 3 is pushed up and held, and the packing 12 forms a liquid injection passage in which a watertight state is secured. On the upper surface of the inner stopper lid 2, an inlet 5 is provided at a position slightly off the center, and a through hole 13 is formed in the bottom wall 12 to supply compressed air into the inner container 7. A passage is formed. In addition, the packing 27 is held on the outer peripheral portion by tightening the inner plug body 1.

In the above-described inner plug for the air pot shown in FIG. 6, the number of parts can be reduced as compared with the inner plug of the embodiment shown in FIG. The size of the introduction hole 5 of the inner plug cover 2 and the size of the through hole 13 of the bottom wall 12 are set to a size that can be used as an air passage. If the size is, it is possible to perform disassembly and cleaning, and at the same time, it is possible to supply liquid to the inner container without removing the inner plug.

[0020]

According to the inner plug for an air pot of the present invention as set forth in claim 1, the inner plug itself can be disassembled and the inside of the inner plug which could not be conventionally washed can be washed.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the content liquid can be supplied into the inner container in a state where the inner plug is attached to the air pot. As a result, it is possible to prevent the place where the removed inner plug is placed from being bothered, and to prevent the temperature of the liquid content from decreasing due to the removal of the inner plug.

According to the invention of claim 3, the inner plug according to the invention of claims 1 and 2 can be implemented with a structure as simple as possible.

According to the invention of claim 4, the inner plug according to the invention of claims 1 and 2 can be implemented with a simple structure having a smaller number of parts.

According to the fifth aspect of the present invention, when the content liquid is supplied with the inner stopper attached, the content liquid can be prevented from spilling from the upper surface of the inner stopper.

[Brief description of drawings]

FIG. 1 is a side view of an entire air pot, in which an inner plug according to the present invention is mounted, and a part of which is cut longitudinally;

2 is a vertical cross-sectional view of the upper end portion of the air pot shown in FIG. 1 with a lid open,

FIG. 3 is an exploded perspective view of an inner plug for an air pot,

FIG. 4 is a vertical sectional view of an inner plug for an air pot,

FIG. 5 is a vertical cross-sectional view of a valve receiver that is housed inside an inner plug, and the safety valve cover has a screw-type detachable structure;

FIG. 6 is a longitudinal sectional view showing another embodiment of the inner plug for the air pot.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Inner stopper main body, 2 ... Inner stopper lid, 3 ... Valve receiving body, 4 ... Safety valve cover, 5 ... Inlet port, 6 ... Safety valve, 7 ... Inner container, 8 ... Injection pipe, 9 ... Connection pipe, 10 ... Ventilation holes, 11
... liquid passage cylinder, 12 ... bottom wall, 13 ... through hole, 14 ... outer peripheral wall, 15 ... shoulder member, 16 ... lid, 17 ... bellows pump,
18 ... Lever, 19 ... Air supply packing, 20 ... Inner collar, 21
… Extension pipe, 22… Valve seat cylinder, 23… Pump pipe, 24… Rib, 25… Partition wall, 26… Through hole, 27,28… Packing.

Claims (5)

[Claims] 1. An inlet for pressurized air, an air passage communicating between the inlet and the inside of the inner container, a liquid injection passage for discharging the content liquid to the outside of the container due to a pressure increase in the inner container, An inner plug for an air pot equipped with a safety valve mechanism to prevent liquid leakage in the liquid passage when it falls, and in a cap-shaped inner plug body, a pressurized air inlet, and a liquid injection pipe for the content liquid. An inner plug for an air pot, wherein the stopper lid is detachable, and a safety valve mechanism is held therein by mounting the inner stopper body and the inner stopper lid. 2. An inlet for pressurized air and an air passage communicating with the inlet and the inside of the inner container are formed to have a size capable of supplying a content liquid into the inside of the inner container. The inner plug for an air pot according to claim 1. 3. A safety valve mechanism held by an inner stopper body and an inner stopper lid is a cap-shaped valve receiving body having an outer diameter which is in close contact with the inner surface of the inner stopper body and / or the inner stopper lid, and the valve receiving body A connection pipe to the liquid injection pipe formed on the inner stopper lid, a liquid passage cylinder to which a safety valve cover for holding the safety valve can be attached and detached, and an air passage separated from the liquid passage cylinder An inner plug for an air pot according to claim 1 or 2. 4. A liquid injection pipe in which the inner stopper body has a cylindrical shape with a bottom wall, a safety valve cover portion for holding a safety valve is formed on the bottom wall, and the safety valve cover portion and the inner stopper lid are formed. A valve receiving body is disposed between the inner stopper body and the inner stopper body, and the valve stopper is held by mounting the inner stopper body and the inner stopper lid, and an air passage is provided in a part of a bottom wall of the inner stopper body. The inner plug for an air pot according to item 1 or 2. 5. The inner stopper for an air pot according to claim 1, wherein an outer peripheral wall is formed on the upper surface of the inner stopper lid to form a saucer shape.