How to use replacement parts for beverage containers

Abstract

To provide a method of using a replacement part for a beverage container which can be readily fitted to a beverage take-out pipe of the beverage container.SOLUTION: A replacement part for a beverage container comprises: a cylindrical member fitted to a beverage take-out pipe of the beverage container; a second beverage take-out pipe extending from the cylindrical member to a bottom part of the beverage container; and a bag body which is fitted to the cylindrical member or the second beverage take-out pipe, and stores a beverage. A method of using the replacement part for the beverage container comprises: a step of preparing fittings to be fitted to a mouth piece of the beverage container; a fitting step of fitting the replacement part to the fittings, by fitting the cylindrical member to a lower end part of the beverage take-out pipe configuring a part of the fittings; an inserting step of inserting the fittings to which the replacement part is fitted in the beverage container; and a second fitting step of fitting a fitting part of the fittings to the mouth piece of the beverage container.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a method for using a replacement part for a beverage container. [Background technology]

[0002] There is known a technique for forming a beverage outlet by fixing a fitting to a mouthpiece of a beverage storage container.

[0003] Fig. 1 shows an example of a conventional beverage storage container 1. Fig. 1 shows a state in which the fitting 10 is attached to the nozzle part 15 by screwing the male thread part 10s of the fitting 10 and the female thread part 15s of the nozzle part 15 together.

[0004] When taking a beverage out of a conventional beverage storage container 1, carbon dioxide gas is supplied into the beverage storage container 1 to increase the pressure inside the beverage storage container 1, and the pressure pushes the beverage out of the beverage storage container 1. In a conventional beverage storage container 1, the beverage comes into direct contact with the beverage storage container 1. For this reason, when collecting and reusing the beverage storage container 1, it is laborious and costly to manage the internal condition of the beverage storage container 1.

[0005] As a related technique, Patent Document 1 discloses a beverage supply device. The beverage supply device disclosed in Patent Document 1 comprises a container body including a neck, and a flexible bag placed inside the container body. In the beverage supply device disclosed in Patent Document 1, pressurized gas is introduced into the space between the inner wall of the container body and the outside of the bag, so that the beverage inside the bag is dispensed from the neck. The entire beverage supply device disclosed in Patent Document 1 is used in a one-way system that is not reused. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2018-30639 A Summary of the Invention [Problem to be solved by the invention]

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a method for using a replacement part for a beverage container which is easy to attach to the beverage outlet pipe of the beverage container. [Means for solving the problem]

[0008] The means for solving the problems will be described below using the numbers and symbols used in the description of the embodiment of the invention. These numbers and symbols are added in parentheses for reference purposes to show an example of the correspondence between the description of the claims and the description of the embodiment of the invention. Therefore, the description in parentheses should not be interpreted as limiting the scope of the claims.

[0009] In some embodiments, a replacement part (2) for a beverage container is a part that is attached to a beverage outlet tube (52) of a beverage container. The replacement part (2) includes a tubular member (20) that is attached to the beverage outlet tube (52), a second beverage outlet tube (28) that extends from the tubular member (20), and a bag (30) that is attached to the tubular member (20) or the second beverage outlet tube (28) and that is used to contain a beverage.

[0010] In the above replacement part (2), the tubular member (20) may include a tubular member main body (25) and an annular sealing member (23) arranged between the beverage extraction tube (52) and the tubular member main body (25).

[0011] In the replacement part (2), the annular sealing member (23) may be configured to be pressed by a lower end (52e) of the beverage outlet pipe (52).

[0012] In the replacement part (2), the annular sealing member (23) may be disposed between an outer surface (52u) of the beverage outlet pipe (52) and an inner circumferential surface of the tubular member (20).

[0013] In the above replacement part (2), the tubular member (20) may have a recess (26c; 20d) that engages with an annular protrusion (52t) of the beverage extraction tube (52), or a protrusion that engages with an annular recess of the beverage extraction tube (52).

[0014] In the above replacement part (2), the tubular member (20) may have a large diameter portion (261) facing the beverage extraction pipe (52), a small diameter portion (264) connected to the second beverage extraction pipe (28), and a connecting portion (267) connecting the large diameter portion (261) and the small diameter portion (264).

[0015] The replacement part (2) may further include a non-bag-shaped protective sheet (60) disposed above the bag body (30). The protective sheet (60) may have a through hole (60h) through which the beverage extraction tube (52) or the tubular member (20) can be inserted.

[0016] In the replacement part (2), the bag (30) may be made of a synthetic resin or a laminated film including a light-shielding layer or an oxygen barrier layer and a synthetic resin layer, and the second beverage outlet tube (52) may be made of a synthetic resin.

[0017] In some embodiments, a combination of a replacement part (2) for a beverage container and a beverage container (4) includes a beverage container (4) and a replacement part (2) for a beverage container. The beverage container (4) includes a beverage container body (40) and a beverage outlet tube (52) made of stainless steel. The replacement part (2) includes a tubular member (20) attached to the beverage outlet tube (52), a second beverage outlet tube (28) extending from the tubular member (20) toward a bottom (45) of the beverage container (4), and a bag (30) attached to the tubular member (20) or the second beverage outlet tube (28) for containing a beverage.

[0018] In the combination of the beverage container replacement part (2) and the beverage container (4), the beverage container (4) may further include a removal prevention member (59) for preventing the beverage outlet tube (52) from being removed from the beverage container (4). The replacement part (2) may also include a protective sheet (60) for preventing the bag body (30) from directly contacting the removal prevention member (59).

[0019] In the combination of the above-mentioned replacement part (2) for a beverage container and the beverage container (4), a lower end (52e) of the beverage extraction tube (52) made of stainless steel and an outer circumferential surface of a lower end portion (521) of the beverage extraction tube (52) may be covered by the tubular member (20).

[0020] In the combination of the above-mentioned replacement part (2) for a beverage container and the beverage container (4), the beverage container (4) may further include a mouth part (44). In addition, the lower end of the mouth part (44) may have a tapered surface (44t) for smoothly reducing the diameter of the bag body (30) that comes into contact with the mouth part (44) when the replacement part (2) is removed from the beverage container (4).

[0021] In some embodiments, a method of using a replacement part (2) for a beverage container, the replacement part (2) comprises a tubular member (20) attached to a beverage outlet tube (52) of a beverage container, a second beverage outlet tube (28) extending from the tubular member (20) toward a bottom (45) of the beverage container (4), and a bag (30) attached to the tubular member (20) or the second beverage outlet tube (28) for containing a beverage. The method of use includes a step of preparing a fitting (50) to be attached to the nozzle portion (44) of the beverage container (4); an attachment step of attaching the replacement part (2) to the fitting (50) by attaching the tubular member (20) to a lower end portion (521) of the beverage outlet tube (52) constituting a part of the fitting (50); an insertion step of inserting the fitting (50) having the replacement part (2) attached thereto into the beverage container (4); and a second attachment step of attaching the attachment portion (51) of the fitting (50) to the nozzle portion (44) of the beverage container (4).

[0022] In the method of using the replacement part (2) for the beverage container described above, by performing the installation process, the lower end (521) of the beverage extraction tube (52) may be inserted into the tubular member (20), or the engagement portion (290) of the tubular member (20) may be inserted into the lower end (521) of the beverage extraction tube (52).

[0023] In the method of using the replacement part (2) for a beverage container, the beverage outlet tube (52) may have a shoulder portion (52s). Also, by performing the mounting step, the shoulder portion (52s) may be covered by the tubular member (20) or an engagement portion (290) of the tubular member (20) may engage with the shoulder portion (52s).

[0024] The method of using the replacement part (2) for a beverage container may further include a removal step of removing the replacement part (2) from the fitting (50) and a reinstallation step of installing a new replacement part (2n) to the fitting (50). The fitting (50) to which the new replacement part (2n) is installed in the reinstallation step may be a part that is cleaned and reused. Effect of the Invention

[0025] According to the present invention, it is possible to provide a method of using a replacement part for a beverage container which is easy to attach to the beverage outlet pipe of the beverage container. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a cross-sectional view showing a typical conventional beverage storage container. [Diagram 2] FIG. 2 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the first embodiment. [Diagram 3] FIG. 3 is a schematic cross-sectional view showing a state before the replacement part for a beverage container in the first embodiment is attached to a beverage extraction pipe. [Figure 4A] FIG. 4A is a schematic cross-sectional view illustrating a replacement part for a beverage container in the first embodiment. [Figure 4B] FIG. 4B is a schematic plan view showing the replacement part for the beverage container in the first embodiment. [Diagram 5] FIG. 5 is a schematic two-sided view showing a protective sheet. [Figure 6] FIG. 6 is a schematic cross-sectional view showing a state before a replacement part for a beverage container in a modified example of the first embodiment is attached to a beverage extraction pipe. [Figure 7] FIG. 7 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container in a second modified example of the first embodiment. [Figure 8]FIG. 8 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the second embodiment. [Figure 9] FIG. 9 is a schematic cross-sectional view showing a state before a replacement part for a beverage container in the second embodiment is attached to a beverage outlet pipe. [Figure 10] FIG. 10 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the third embodiment. [Figure 11] FIG. 11 is a schematic cross-sectional view showing a state before a replacement part for a beverage container in the third embodiment is attached to a beverage outlet pipe. [Figure 12] FIG. 12 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the fourth embodiment. [Figure 13] FIG. 13 is a schematic cross-sectional view showing a state before a replacement part for a beverage container in the fourth embodiment is attached to a beverage outlet pipe. [Figure 14] FIG. 14 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the fifth embodiment. [Figure 15] FIG. 15 is a schematic cross-sectional view showing a state before a replacement part for a beverage container in the fifth embodiment is attached to a beverage extraction pipe. [Figure 16] FIG. 16 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the sixth embodiment. [Figure 17] FIG. 17 is a flowchart showing an example of a method of using a replacement part for a beverage container in an embodiment. [Figure 18] FIG. 18 is a flowchart showing an example of a method of using a replacement part for a beverage container in an embodiment. [Figure 19] FIG. 19 is a schematic diagram showing the state during the insertion step. [Figure 20] FIG. 20 is a diagram that illustrates a state in which the beverage filling process is being carried out. [Figure 21]FIG. 21 is a schematic diagram showing a state in which the beverage dispensing process is being performed. [Figure 22] FIG. 22 is a schematic diagram showing a state in which a step of removing a replacement part is being performed. [Figure 23] FIG. 23 is a schematic diagram showing how a new replacement part is attached to the cleaning fitting. [Figure 24] FIG. 24 is a schematic cross-sectional view showing a combination of a replacement part for a beverage container and a beverage container according to the seventh embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, the replacement part 2 for a beverage container, the combination of the replacement part 2 for a beverage container and a beverage container 4, and the method of using the replacement part 2 for a beverage container will be described with reference to the attached drawings. In the following description, the same reference numerals are used for members and parts having the same functions, and repeated description of members and parts with the same reference numerals is omitted. In the following description, the "bag" is a bag capable of containing a beverage. The bag may be a bag capable of containing alcoholic beverages such as beer, happoshu, wine, sake, or distilled liquor. The "bag" may be a bag capable of containing non-alcoholic beverages such as non-alcoholic beer, juice, and carbonated beverages.

[0028] (First embodiment) With reference to Figs. 2 to 7, a replacement part 2A for a beverage container in the first embodiment and a combination of the replacement part 2A for a beverage container and a beverage container 4 will be described. Fig. 2 is a schematic cross-sectional view showing a combination of the replacement part 2A for a beverage container and the beverage container 4 in the first embodiment. Fig. 2 shows a state after the replacement part 2A for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D. Fig. 3 is a schematic cross-sectional view showing a state before the replacement part 2A for a beverage container in the first embodiment is attached to the beverage extraction tube 52. Fig. 4A is a schematic cross-sectional view showing the replacement part 2A for a beverage container in the first embodiment. Fig. 4B is a schematic plan view showing the replacement part 2A for a beverage container in the first embodiment. Fig. 5 is a schematic two-sided view showing the protective sheet 60. A plan view is shown on the upper side of Fig. 5, and a side view is shown on the lower side of Fig. 5. Fig. 6 is a schematic cross-sectional view showing a state before a replacement part 2A for a beverage container in a modified example of the first embodiment is attached to a beverage extraction pipe 52. Fig. 7 is a schematic cross-sectional view showing a combination of a replacement part 2A for a beverage container and a beverage container 4 in a second modified example of the first embodiment.

[0029] In the example shown in FIG. 2, the beverage container 4 includes a beverage container body 40 and a beverage outlet tube 52. The beverage container body 40 defines a space for accommodating the bag body 30. The beverage container body 40 is made of, for example, stainless steel. The beverage outlet tube 52 is used to take out the beverage D stored in the bag body 30 in the beverage container 4 to the outside of the beverage container 4. The beverage outlet tube 52 is made of, for example, stainless steel. The lower end 52e of the beverage outlet tube 52 is disposed in the beverage container body 40. In the example shown in FIG. 2, when the height of the lower end of the nozzle part 44 of the beverage container 4 based on the bottom 45 of the beverage container body 40 is defined as H, the height of the lower end 52e of the beverage outlet tube 52 based on the bottom 45 of the beverage container body 40 is 0.5H or more, 0.6H or more, or 0.7H or more.

[0030] The beverage container 4 may include a beverage valve V1 and / or a gas valve V2. The beverage valve V1 is a valve that can change between an open state that allows the beverage to pass and a closed state that prohibits the beverage from passing. The gas valve V2 is a valve that can change between an open state that allows the gas to pass and a closed state that prohibits the gas from passing. The beverage container 4 may include a bottom protector 48 that protects the bottom 45 of the beverage container body 40 and / or a top protector 49 that protects the top or the cap part 44 of the beverage container body 40. The bottom protector 48 and / or the top protector 49 are attached to the beverage container body 40 by welding or the like.

[0031] In the example shown in FIG. 2, the replacement part 2A for a beverage container is attached to the beverage outlet pipe 52. The replacement part 2A includes a tubular member 20, a second beverage outlet pipe 28, and a bag body 30. The tubular member 20 is a member attached to the beverage outlet pipe 52. The second beverage outlet pipe 28 is a tube extending downward from the tubular member 20, in other words, toward the bottom 45 of the beverage container 4. The bag body 30 is a member for storing a beverage D. The bag body 30 is attached to the tubular member 20 or the second beverage outlet pipe 28.

[0032] Next, referring to FIG. 3, a procedure for attaching the replacement part 2A for a beverage container to the beverage extraction tube 52 will be described. The replacement part 2A for a beverage container can be attached to the beverage extraction tube 52. In the example shown in FIG. 3, the replacement part 2A is attached to the beverage extraction tube 52 by attaching the tubular member 20 to the lower end 521 of the beverage extraction tube 52. In the example shown in FIG. 3, the bag body 30 is attached to the tubular member 20. Therefore, the bag body 30 is supported by the beverage extraction tube 52 via the tubular member 20 by attaching the tubular member 20 to the beverage extraction tube 52. Alternatively, the bag body 30 may be attached to the second beverage extraction tube 28. In this case, the bag body 30 is supported by the beverage extraction tube 52 via the second beverage extraction tube 28 by attaching the tubular member 20 to the beverage extraction tube 52.

[0033] The beverage container replacement part 2A in the first embodiment has a tubular member 20 that can be attached to the beverage outlet tube 52, and the tubular member 20 can be easily attached to the beverage outlet tube 52. For example, in the example shown in FIG. 3, the tubular member 20 can be attached to the beverage outlet tube 52 simply by moving the beverage outlet tube 52 linearly toward the tubular member 20.

[0034] In the first embodiment, the beverage extraction pipe 52 to which the cylindrical member 20 is attached is not included in the replacement part 2A. This reduces the manufacturing cost of the replacement part 2A. If the fitting 50 including the beverage extraction pipe 52, the beverage valve V1, the gas valve V2, and the mounting part 51 is not included in the replacement part 2A, the manufacturing cost of the replacement part 2A is further significantly reduced. It is preferable that the fitting 50 including the beverage extraction pipe 52 is washed and reused. In this case, the operating cost of the beverage container as a whole is significantly reduced by making the fitting 50 having a complex structure reusable and making the replacement part 2A have a simple structure. In this specification, the "fitting" means a member that is attached to the mouth part 44 of the beverage container 4 and used to fill the beverage inside the beverage container 4 with a beverage and / or to extract a beverage from the inside of the beverage container 4.

[0035] The beverage container replacement part 2A in the first embodiment includes a bag body 30 for containing a beverage. This prevents or suppresses the beverage from directly contacting the beverage container body 40. In this case, the effort required to manage the internal state of the beverage container 4 can be reduced.

[0036] The replacement part 2A for a beverage container in the first embodiment includes a second beverage outlet pipe 28 extending from the tubular member 20 toward the bottom 45 of the beverage container 4. By including the second beverage outlet pipe 28 in the replacement part 2A, the beverage present in the lower part of the bag body 30 can be preferentially taken out over the beverage present in the upper part of the bag body 30. In this case, gas G (see FIG. 2), such as carbon dioxide gas and air, present in the upper part of the bag body 30 is less likely to be mixed into the beverage taken out from the bag body 30, compared to the case where the beverage present in the upper part of the bag body 30 is preferentially taken out. In addition, when the beverage present in the lower part of the bag body 30 is preferentially taken out, it is possible to reduce the amount of beverage ultimately remaining in the bag body 30, compared to the case where the beverage present in the upper part of the bag body 30 is preferentially taken out.

[0037] In addition, since the second beverage outlet pipe 28, which is a part of the beverage outlet pipes (52, 28) that come into direct contact with the beverage, is a replaceable part, the fitting 50 can be made short. When the fitting 50 is short, the fitting 50 is easy to handle. In addition, when the fitting 50 is reused, the inner surface of the fitting 50 is easy to clean.

[0038] As described above, the replacement part 2A for a beverage container in the first embodiment includes the tubular member 20 that can be attached to the beverage extraction tube 52, the bag body 30, and the second beverage extraction tube 28. In this case, three different effects are synergistically achieved: (1) the manufacturing cost of the replacement part 2A is reduced, (2) direct contact of the beverage with the beverage container body 40 is prevented or suppressed, and (3) the gas G present in the bag body 30 is suppressed from being mixed into the beverage extracted from the bag body 30.

[0039] 2, the combination of the replacement part 2A for a beverage container and the beverage container 4 is a combination after the replacement part 2A for a beverage container is attached to the beverage container 4 (more specifically, the beverage outlet pipe 52). Alternatively, the combination of the replacement part 2A for a beverage container and the beverage container 4 in the first embodiment may be a combination before the replacement part 2A for a beverage container is attached to the beverage container 4 (more specifically, the beverage outlet pipe 52), in other words, a combination in a state in which the replacement part 2A and the beverage container 4 are provided as combinable parts.

[0040] Next, optional additional configurations that can be adopted in the first embodiment will be described with reference to FIGS.

[0041] (Cylindrical member 20) In the example shown in FIG. 2, the tubular member 20 includes a tubular member main body 25 and an annular seal member 23 disposed in the tubular member main body 25.

[0042] In the example shown in FIG. 2, the annular seal member 23 is disposed between the beverage extraction pipe 52 and the tubular member main body 25. The annular seal member 23 may be a seal ring 23a, an adhesive disposed in an annular shape, or an annular adhesive sheet. When the annular seal member 23 is a seal ring 23a, the material of the seal ring 23a is made of a material that is softer than the material of the tubular member main body 25. In other words, the elastic modulus of the seal ring 23a is lower than the elastic modulus of the tubular member main body 25. The seal ring 23a is made of an elastic material such as silicone rubber. When the tubular member 20 includes the annular seal member 23, leakage of beverage from the gap between the tubular member 20 and the beverage extraction pipe 52 is more reliably prevented.

[0043] The seal ring 23a is, for example, molded separately from the tubular member main body 25 and attached to the tubular member main body 25. In the example shown in Fig. 2, the seal ring 23a is attached to an annular recess 25d provided in the tubular member main body 25. Alternatively, the seal ring 23a may be attached to the tubular member main body 25 by molding the seal ring 23a in a molding die that houses the molded tubular member main body 25. Alternatively still, the seal ring 23a and the tubular member main body 25 may be molded simultaneously in a molding die.

[0044] 2, the annular sealing member 23 is configured to be pressed by the lower end 52e of the beverage outlet pipe 52. In this case, adverse effects associated with dimensional errors in the direction along the central axis C of the tubular member 20 (in other words, variations in the shape of the tubular member 20) can be automatically mitigated by the amount by which the lower end 52e of the beverage outlet pipe 52 is pressed into the annular sealing member 23.

[0045] 2, the tubular member 20 (more specifically, the tubular portion 26 described below) has an engagement recess 26c that engages with the lower end 52e of the beverage extraction pipe 52. In the example shown in Fig. 2, the engagement recess 26c is formed by an annular recess 25d (more specifically, an annular recess 25d that houses the annular sealing member 23) that is arranged so as to surround the central axis C of the tubular member 20.

[0046] 2, the lower end 52e of the beverage extraction pipe 52 engages with the engagement recess 26c and contacts the annular sealing member 23. In this case, incomplete contact between the annular sealing member 23 and the beverage extraction pipe 52 due to a dimensional error of the cylindrical member 20 in the direction along the central axis C of the cylindrical member 20 is more reliably prevented.

[0047] 2, the lower end 52e of the beverage outlet pipe 52 is bent so as to face outward. In other words, the lower end 52e of the beverage outlet pipe 52 is bent so as to face in a direction away from the central axis of the beverage outlet pipe 52. In this case, the lower end 52e of the beverage outlet pipe 52 functions as an annular protrusion that engages with the annular recess (26c) of the tubular member 20.

[0048] 2, the lower end 52e of the stainless steel beverage extraction pipe 52 and the outer circumferential surface of the lower end 521 of the beverage extraction pipe 52 are covered by the tubular member 20. In this case, the bag body 30 is prevented from being damaged due to the lower end 521 of the stainless steel beverage extraction pipe 52 coming into contact with the bag body 30. In particular, when the lower end 52e of the beverage extraction pipe 52 is disposed inside the bag body 30 as in the example shown in FIG. 2, it is preferable that the lower end 52e of the stainless steel beverage extraction pipe 52 and the outer circumferential surface of the lower end 521 of the beverage extraction pipe 52 are covered by the tubular member 20.

[0049] 3, the tubular member main body 25 has a tubular portion 26 and a flange portion 27. In other words, the tubular portion 26 and the flange portion 27 constitute the tubular member main body 25. The tubular member main body 25 is made of a synthetic resin such as polyethylene or polypropylene.

[0050] The cylindrical portion 26 is, for example, a cylindrical portion extending in a direction along the longitudinal direction of the second beverage extraction pipe 28. In the example shown in FIG. 3, the inner diameter of the lower end of the cylindrical portion 26 is smaller than the inner diameter of the upper end of the cylindrical portion 26. When the cylindrical member 20 is attached to the beverage extraction pipe 52, the upper end 26a of the cylindrical portion 26 is disposed opposite to the outer surface 52u of the beverage extraction pipe 52. More specifically, the inner surface of the upper end 26a of the cylindrical portion 26 contacts the outer surface 52u of the beverage extraction pipe. Also, when the cylindrical member 20 is attached to the beverage extraction pipe 52, the lower end 26b of the cylindrical portion 26 is located below the lower end 52e of the beverage extraction pipe 52 (see FIG. 2 if necessary). The lower end 26b of the cylindrical portion 26 is connected to the second beverage extraction pipe 28.

[0051] In the example shown in FIG. 4A, the tubular member 20 (more specifically, the tubular portion 26) includes a large diameter portion 261 that is arranged opposite the outer surface 52u of the beverage extraction pipe 52, a small diameter portion 264 that is connected to the second beverage extraction pipe 28, and a connecting portion 267 that connects the large diameter portion 261 and the small diameter portion 264.

[0052] In the example shown in FIG. 2, the large diameter portion 261 is arranged to cover the lower end 521 of the beverage extraction tube 52. More specifically, the large diameter portion 261 is arranged to cover the outer surface of the lower end 521 of the beverage extraction tube 52. In the example shown in FIG. 2, the beverage extraction tube 52 has a first portion which is the lower end 521 and a second portion 523 having a larger outer diameter than the lower end 521. In this case, the large diameter portion 261 may have a large diameter portion first portion 261b which covers the first portion (in other words, the lower end 521) of the beverage extraction tube 52 and a large diameter portion second portion 261a which covers the second portion 523 of the beverage extraction tube 52. In the example shown in FIG. 2, the outer diameter of the large diameter portion first portion 261b is smaller than the outer diameter of the large diameter portion second portion 261a.

[0053] In the example shown in Fig. 4A, the small diameter portion 264 is a portion to which the second beverage extraction pipe 28 is connected. When the second beverage extraction pipe 28 is connected to the small diameter portion 264, it is possible to reduce the inner diameter and / or the outer diameter of the second beverage extraction pipe 28. When the outer diameter of the second beverage extraction pipe 28 is small, it is possible to compactly arrange the bag body 30 around the second beverage extraction pipe 28 when inserting the replacement part 2A into the beverage container body 40.

[0054] 2, the inner diameter of the small diameter portion 264 (and the outer diameter of the small diameter portion 264) is smaller than the inner diameter of the lower end 52e of the beverage outlet pipe 52. The inner diameter of the lower end 52e of the beverage outlet pipe is, for example, larger than 7.5 mm, 10.5 mm, or 13.5 mm. On the other hand, the inner diameter of the small diameter portion 264 is, for example, 13.5 mm or less, 11.5 mm or less, 9.5 mm or less, or 7.5 mm or less.

[0055] The connecting portion 267 is a portion that connects the large diameter portion 261 and the small diameter portion 264. In the example shown in FIG. 4A, an annular recess 25d for disposing the annular seal member 23 is formed on the upper portion of the connecting portion 267. In the example shown in FIG. 4A, an annular wall 267w is formed on the upper surface of the connecting portion 267 to prevent the annular seal member 23 (more specifically, the seal ring 23a) from being displaced inward. The annular wall 267w may be omitted.

[0056] The flange portion 27 functions as an attachment portion (more specifically, a welding portion) for attaching the bag body 30. In the example shown in Fig. 4A, the flange portion 27 is connected to the large diameter portion 261 (more specifically, the large diameter portion second portion 261a).

[0057] The flange 27 and the bag body 30 are welded by, for example, high-frequency welding. Alternatively, the flange 27 and the bag body 30 may be welded by heat welding or ultrasonic welding. In order to facilitate welding between the flange 27 and the bag body 30, the material of the flange 27 is preferably the same as the material of the bag body 30. In the example shown in FIG. 4A, the bag body 30 is attached to the flange 27 via a protective sheet 60 (more specifically, the bag body 30 is welded to the flange 27 via the protective sheet 60). Alternatively, the bag body 30 may be attached directly to the flange 27 (more specifically, the bag body 30 may be welded directly to the flange 27).

[0058] In the example shown in Fig. 4B, the flange 27 has a ring shape in a plan view (in other words, when viewed in a direction along the central axis C of the tubular member 20). In the example shown in Fig. 4A, the flange 27 and a peripheral portion of the through hole 31h of the bag body 30 are welded to each other. Also, in the example shown in Fig. 4A, the bag body 30 is welded to the lower surface of the flange 27. Alternatively, the bag body 30 may be welded to the upper surface of the flange 27.

[0059] From the viewpoint of facilitating attachment (more specifically, welding) between flange 27 and bag body 30, the difference between the diameter of outer edge 27u of flange 27 and the diameter of inner edge 27n of flange 27 is preferably 6 mm or more, 8 mm or more, or 10 mm or more. Moreover, from the viewpoint of making the size of flange 27 compact, the difference between the diameter of outer edge 27u of flange 27 and the diameter of inner edge 27n of flange 27 is preferably 18 mm or less.

[0060] The second beverage extraction pipe 28 is connected to the tubular member 20. In the example shown in FIG. 4A, the upper end of the second beverage extraction pipe 28 is connected to the lower end of the tubular member 20 (more specifically, the small diameter portion 264). In the example shown in FIG. 4A, the second beverage extraction pipe 28 is attached to the tubular member 20 by engagement. More specifically, an engagement portion 28c (e.g., an engagement recess or an engagement protrusion) formed on the outer surface of the second beverage extraction pipe 28 is engaged with an engagement portion 264c (e.g., an engagement protrusion or an engagement recess) formed on the inner surface of the tubular member 20. Alternatively, the second beverage extraction pipe 28 may be attached to the tubular member 20 by screwing, welding, or bonding. Furthermore, alternatively, the second beverage extraction pipe 28 may be integrally formed with the tubular member 20.

[0061] 4A, a flange 281 is disposed at the upper end of the second beverage outlet pipe 28. The flange 281 functions as a stopper that prevents the second beverage outlet pipe 28 from falling off the cylindrical member 20.

[0062] In the example shown in FIG. 2, the outer diameter of the second beverage extraction pipe 28 (and the inner diameter of the second beverage extraction pipe 28) is smaller than the inner diameter of the lower end 52e of the beverage extraction pipe 52. The outer diameter L1 of the second beverage extraction pipe 28 is, for example, 14 mm or less, 12 mm or less, 10 mm or less, 8 mm or less, or 7 mm or less. The inner diameter of the second beverage extraction pipe 28 is, for example, 13.5 mm or less, 11.5 mm or less, 9.5 mm or less, 7.5 mm or less, or 6.5 mm or less. When the outer diameter L1 of the second beverage extraction pipe 28 is small, the bag body 30 can be compactly arranged around the second beverage extraction pipe 28 when the replacement part 2A is inserted into the beverage container body 40.

[0063] In the example shown in Figure 2, the connection portion B between the tubular member 20 and the second beverage extraction pipe 28 (more specifically, the engagement portion between the tubular member 20 and the second beverage extraction pipe 28) is positioned below the lower end 52e of the beverage extraction pipe 52 and closer to the central axis C of the tubular member 20 than the lower end 52e of the beverage extraction pipe 52.

[0064] In the example shown in Fig. 2, the lower end 28e of the second beverage outlet pipe 28 is disposed near the bottom 45 of the beverage container body 40. In a default state (e.g., when the beverage valve V1 and the gas valve V2 are closed), the distance L2 between the lower end 28e of the second beverage outlet pipe 28 and the inner surface of the bottom 45 of the beverage container body 40 is, for example, 4 cm or less, 3 cm or less, 2 cm or less, or 1 cm or less. By disposing the lower end 28e of the second beverage outlet pipe 28 near the bottom 45 of the beverage container body 40, the amount of beverage that is ultimately left without being taken out of the bag body 30 can be reduced.

[0065] In order to dispose the lower end 28e of the second beverage outlet pipe 28 near the bottom 45 of the beverage container body 40, the second beverage outlet pipe 28 is preferably a long pipe. The length of the second beverage outlet pipe 28 is, for example, 5 cm or more, 10 cm or more, or 15 cm or more. The length of the second beverage outlet pipe 28 is preferably longer than the length of the beverage outlet pipe 52.

[0066] In the example shown in Fig. 2, the beverage is taken into the second beverage outlet pipe 28 through an opening OP arranged at the lower end 28e of the second beverage outlet pipe 28. Alternatively or additionally, an opening for taking in the beverage may be formed in the side of the second beverage outlet pipe 28.

[0067] The second beverage outlet pipe 28 is made of a synthetic resin, such as polyethylene or polypropylene.

[0068] (Bag body 30) The bag body 30 is made of synthetic resin such as polyethylene and polypropylene. The bag body 30 may be made of any one of a high-density polyethylene layer, a low-density polyethylene layer, a polyethylene terephthalate layer, and a nylon layer, or may be made of a laminate of these layers. In addition, the bag body 30 may be made of a laminate film in which a light-shielding layer or an oxygen barrier layer such as an aluminum foil or an aluminum deposition layer is arranged between a plurality of synthetic resin layers in order to ensure light-shielding and / or oxygen barrier properties. In addition, the bag body 30 may be made of a laminate film in which an oxygen barrier layer such as an ethylene-vinyl alcohol copolymer is arranged between a plurality of synthetic resin layers. The bag body 30 may be made of a laminate film including a nylon layer, a polyethylene layer, and an aluminum layer. The material of the bag body 30 is not limited to the above-mentioned example. In the example shown in FIG. 4A, the bag body 30 has a through hole 31h into which the beverage extraction tube 52 or the tubular member 20 can be inserted. The bag body 30 (more specifically, the portion around the through hole 31h) and the flange portion 27 described above are welded together, whereby the bag body 30 and the tubular member 20 are integrated together.

[0069] 4A, the entire second beverage extraction pipe 28 is disposed inside the bag body 30. In addition, in the example shown in FIG. 4A, an annular sealing member 23 is disposed inside the bag body 30.

[0070] (Protective sheet 60) As illustrated in FIG. 2, the replacement part 2A for a beverage container may have a protective sheet 60 arranged above the bag body 30. The protective sheet 60 prevents or suppresses the bag body 30 from contacting the through-hole portion 54h of the fitting 50. In the example illustrated in FIG. 2, if the bag body 30 contacts the through-hole portion 54h, the bag body 30 may be damaged. In contrast, when the protective sheet 60 is arranged above the bag body 30, the bag body 30 is protected by the protective sheet 60, and damage to the bag body 30 is prevented or suppressed. It is preferable that the protective sheet 60 is not a bag body, in other words, the protective sheet 60 is a non-bag-shaped protective sheet. In addition, when the possibility of damage to the bag body 30 is low, the protective sheet 60 may be omitted.

[0071] In the example shown in Fig. 5, the protective sheet 60 has a through hole 60h into which the beverage extraction pipe 52 or the tubular member 20 can be inserted. From the viewpoint of preventing the protective sheet 60 from being caught between the nozzle portion 44 and the fitting 50, it is preferable that the distance L3 from the center of the through hole 60h to the outermost edge 60e of the protective sheet 60 is set to a distance such that the outermost edge 60e of the protective sheet 60 does not reach the nozzle portion 44 when the fitting 50 is attached to the nozzle portion 44 (see Fig. 2 if necessary). More specifically, it is preferable that the distance L3 is about 7 cm (5 cm or more and 9 cm or less).

[0072] 5, the protective sheet 60 is a circular sheet. The circular sheet has a through hole 60h formed therein. The protective sheet 60 may be made of synthetic resin or other materials (for example, cloth).

[0073] 4A, the protective sheet 60 is connected to the bag body 30 (in other words, the protective sheet 60 is fixed to the bag body 30). More specifically, the protective sheet 60 is welded to the flange 27 together with the bag body 30. Alternatively, the protective sheet 60 and the bag body 30 do not have to be integrated together (in other words, the protective sheet 60 and the bag body 30 do not have to be connected to each other).

[0074] (Position of flange 27) In the example shown in Fig. 4A, the flange portion 27 is disposed at the upper end of the tubular portion 26. Alternatively, as illustrated in Fig. 6 showing a modified example of the first embodiment, the flange portion 27 may be disposed at the middle portion of the tubular portion 26 (in other words, the region between the upper end and the lower end of the tubular portion 26). The flange portion 27 may be provided at the large diameter portion 261 of the tubular member 20, or at the small diameter portion 264 or the connecting portion 267 of the tubular member 20. Further alternatively, the flange portion 27 may be provided at the second beverage extraction pipe 28.

[0075] In addition, when the tubular portion 26 has a small diameter portion 264 connected to the second beverage extraction pipe 28 and a large diameter portion 261 having an outer diameter larger than that of the small diameter portion 264, it is preferable that the flange portion 27 is arranged in the large diameter portion 261.

[0076] (Beverage container 4) In the example shown in FIG. 2, the beverage container 4 includes a beverage container body 40, a mouthpiece 44, and a fitting 50.

[0077] The beverage container body 40 includes a bottom portion 45, a body portion 46, and a shoulder portion 47. The lower end of the body portion 46 is connected to the outer edge of the bottom portion 45, and the upper end of the body portion 46 is connected to the outer edge of the shoulder portion 47. The beverage container body 40 defines a space for accommodating the bag body 30. The beverage container body 40 is made of, for example, stainless steel. When the beverage container body 40 is made of stainless steel, the bag body 30 (and the beverage) placed in the beverage container body 40 is effectively protected from impact, wind, rain, or light. In addition, the beverage container body 40 can be used for a long period of time, such as 10 years or more.

[0078] The nozzle portion 44 is connected to the beverage container body 40 (more specifically, the shoulder portion 47). In the example shown in FIG. 2, the nozzle portion 44 is welded to the inner edge of the shoulder portion 47. A fitting 50 is attached to the nozzle portion 44. In the example shown in FIG. 2, the nozzle portion 44 has a female thread portion that screws into the male thread portion 51s of the fitting 50. When the nozzle portion 44 (more specifically, the female thread portion of the nozzle portion 44) and the fitting 50 (more specifically, the male thread portion 51s of the fitting 50) are made of stainless steel, deterioration of the thread portion is suppressed over a long period of time.

[0079] In the example shown in Fig. 2, the lower end of the nozzle portion 44 has a tapered surface 44t. The tapered surface 44t is a surface whose inner diameter decreases toward the top. Since the lower end of the nozzle portion 44 has the tapered surface 44t, when the replacement part 2A is removed from the beverage container 4, the bag body 30 that comes into contact with the lower end of the nozzle portion 44 is smoothly reduced in diameter by the tapered surface 44t. In this way, the bulky bag body 30 can be smoothly removed from the beverage container 4 via the nozzle portion 44.

[0080] The fitting 50 includes an attachment portion 51, a beverage outlet pipe 52, a beverage valve V1, and a gas valve V2. The fitting 50 may include an outer cylinder portion .

[0081] The attachment portion 51 is a portion that is attached to the nozzle portion 44 of the beverage container 4. The attachment portion 51 has a cylindrical shape and is preferably made of stainless steel. The attachment portion 51 has a male thread portion 51s that screws into the nozzle portion 44. The attachment portion 51 is preferably provided with an engagement portion 51g for attaching a dispense head (not shown in FIG. 2) for dispensing a beverage from the beverage container 4. In the example shown in FIG. 2, the engagement portion 51g is an engagement protrusion.

[0082] 2, the mounting portion 51 has an inclined surface 51k that is inclined with respect to the central axis of the mounting portion 51. The inclined surface 51k functions as a valve seat portion VB2 of the gas valve V2.

[0083] The beverage outlet pipe 52 is used to receive the beverage D stored in the bag body 30 in the beverage container 4 via the second beverage outlet pipe 28 and take the received beverage out of the beverage container 4. In the example shown in FIG. 3, a beverage valve V1 is arranged in the beverage outlet pipe 52. More specifically, a valve body VA1 of the beverage valve V1 and a valve seat portion VB1 of the beverage valve V1 are arranged in the beverage outlet pipe 52. A biasing member 55 (e.g., a spring member) that biases the valve body VA1 toward the valve seat portion VB1 may be arranged in the beverage outlet pipe 52. The biasing member 55 (e.g., a spring member) is made of, for example, metal. When the valve body VA1 is pressed downward against the biasing force of the biasing member 55, the state of the beverage valve V1 is switched from a closed state to an open state.

[0084] In the example shown in FIG. 3, the beverage outlet pipe 52 is provided with a valve body VA2 of the gas valve V2. More specifically, a first valve member 56 that functions as the valve body VA2 of the gas valve V2 is attached to the upper end of the beverage outlet pipe 52. In the example shown in FIG. 2, the upper part of the first valve member 56 functions as the valve body VA2 of the gas valve V2, and the lower part of the first valve member 56 functions as the valve seat portion VB1 of the beverage valve V1. The fitting 50 may have a second biasing member 55b (e.g., a spring member) that biases the valve body VA2 of the gas valve V2 toward the valve seat portion VB2. The second biasing member 55b (e.g., a spring member) is made of, for example, metal. When the valve body VA2 is pressed downward against the biasing force of the second biasing member 55b, the state of the gas valve V2 is switched from the closed state to the open state, and the beverage outlet pipe 52 moves in a direction approaching the bottom portion 45 of the beverage container 4.

[0085] The outer cylinder portion 54 has a plurality of through holes 54h for passing gas. In the example shown in FIG. 3, the upper end of the outer cylinder portion 54 is connected to the lower end of the attachment portion 51. The outer cylinder portion 54 is arranged to surround the beverage extraction pipe 52. In the example shown in FIG. 3, the outer cylinder portion 54 also functions as a housing portion for housing the second biasing member 55b. A spring receiving member 550 for supporting the lower end of the second biasing member 55b is arranged in the outer cylinder portion 54. The outer cylinder portion 54 is made of, for example, stainless steel.

[0086] As illustrated in Fig. 7 showing a second modified example of the first embodiment, the fitting 50 of the beverage container 4 may be provided with a removal prevention member 59 that prevents the beverage outlet tube 52 from being removed from the beverage container 4. The removal prevention member 59 prevents the beverage outlet tube 52 from being removed from the beverage container 4 without using a dedicated tool. On the other hand, the fitting 50 including the beverage outlet tube 52 can be removed from the beverage container 4 after the removal prevention member 59 is moved in a direction toward the central axis of the nozzle part 44 using a dedicated tool.

[0087] In the example shown in Fig. 7, the removal prevention member 59 protrudes outward beyond the outer tube portion 54. If the removal prevention member 59 comes into contact with the bag body 30, the bag body 30 may be damaged. Therefore, in the example shown in Fig. 7, the above-mentioned protective sheet 60 prevents the bag body 30 from directly contacting the removal prevention member 59. In this way, damage to the bag body 30 is prevented. Note that the aspect in which the protective sheet 60 that prevents the bag body 30 from directly contacting the removal prevention member 59 is provided can also be adopted in the embodiments (second embodiment to seventh embodiment) described later.

[0088] Second Embodiment A replacement part 2B for a beverage container in the second embodiment and a combination of the replacement part 2B for a beverage container and a beverage container 4 will be described with reference to Fig. 8 and Fig. 9. Fig. 8 is a schematic cross-sectional view showing a combination of the replacement part 2B for a beverage container and the beverage container 4 in the second embodiment. Fig. 8 shows a state after the replacement part 2B for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D. Fig. 9 is a schematic cross-sectional view showing a state before the replacement part 2B for a beverage container in the second embodiment is attached to the beverage extraction pipe 52.

[0089] The replacement part 2B for a beverage container and the combination of the replacement part 2B for a beverage container and the beverage container 4 in the second embodiment differ from the replacement part 2A for a beverage container and the combination of the replacement part 2A for a beverage container and the beverage container 4 in the first embodiment in terms of the arrangement of the annular sealing member 23 and the engagement position between the tubular member 20 and the beverage extraction tube 52. In other respects, the second embodiment is similar to the first embodiment.

[0090] In the second embodiment, differences from the first embodiment will be mainly described. On the other hand, in the second embodiment, repeated descriptions of matters already described in the first embodiment will be omitted. Therefore, it goes without saying that the matters already described in the first embodiment can be applied to the second embodiment even if they are not explicitly described in the second embodiment.

[0091] A replacement part 2B for a beverage container in the second embodiment is a replacement part that can be attached to a beverage outlet tube 52 of a beverage container. The replacement part 2B includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward a bottom 45 of the beverage container 4. Additionally, the replacement part 2B may include a protective sheet 60.

[0092] As the beverage container 4 in the second embodiment, it is possible to use a container having the same shape as the beverage container 4 in the first embodiment, except for the lower end portion of the beverage extraction tube 52. The beverage container 4 has a beverage container body 40, a mouth part 44, and a fitting 50. The fitting 50 also has a beverage extraction tube 52. The structures, shapes, and materials of the beverage container body 40, the mouth part 44, and the fitting 50 have been described in the first embodiment. Therefore, repeated descriptions of the structures, shapes, and materials of the beverage container body 40, the mouth part 44, and the fitting 50 will be omitted.

[0093] (Arrangement of the annular seal member 23) In the example shown in FIG. 9, the annular seal member 23 (more specifically, the seal ring 23a) is disposed on the inner circumferential surface of the tubular member main body 25 (more specifically, the tube portion 26). When the beverage extraction tube 52 is inserted into the tubular member main body 25, the annular seal member 23 is disposed between the inner circumferential surface of the tubular member main body 25 and the outer surface 52u of the beverage extraction tube 52 (see FIG. 8 if necessary). The annular seal member 23 prevents the beverage from leaking out from between the tubular member main body 25 and the beverage extraction tube 52. As illustrated in FIG. 9, the tube portion 26 (more specifically, the large diameter portion 261) may be formed with an annular recess 25d in which the annular seal member 23 is disposed.

[0094] 9, the seal ring 23a and the tubular member main body 25 may be molded simultaneously in a mold. The seal ring 23a is made of, for example, silicone rubber or the like, and the tubular member main body 25 is made of a resin such as polyethylene or polypropylene. Alternatively, the seal ring 23a may be molded separately from the tubular member main body 25. In this case, the molded seal ring 23a is attached to the tubular member main body 25.

[0095] (Engagement position between the tubular member 20 and the beverage outlet pipe 52) In the example shown in FIG. 8, the inner peripheral surface of the cylindrical member 20 and the outer surface of the lower end 521 of the beverage extraction tube 52 are engaged with each other. In the example shown in FIG. 9, an annular recess 20d is formed on the inner peripheral surface of the cylindrical member 20, and an annular protrusion 52t is formed on the outer surface 52u of the lower end 521 of the beverage extraction tube 52. The annular recess 20d and the annular protrusion 52t are engaged with each other, so that the cylindrical member 20 is held by the beverage extraction tube 52. In the example shown in FIG. 9, the recess (20d) of the cylindrical member 20 and the protrusion (52t) of the beverage extraction tube 52 are engaged with each other. Alternatively, the protrusion of the cylindrical member 20 and the recess of the beverage extraction tube 52 may be engaged with each other.

[0096] (Third embodiment) A replacement part 2C for a beverage container in the third embodiment and a combination of the replacement part 2C for a beverage container and a beverage container 4 will be described with reference to Fig. 10 and Fig. 11. Fig. 10 is a schematic cross-sectional view showing a combination of the replacement part 2C for a beverage container and the beverage container 4 in the third embodiment. Fig. 10 shows a state after the replacement part 2C for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D. Fig. 11 is a schematic cross-sectional view showing a state before the replacement part 2C for a beverage container in the third embodiment is attached to the beverage extraction pipe 52.

[0097] A replacement part 2C for a beverage container and a combination of the replacement part 2C for a beverage container and the beverage container 4 in the third embodiment differ from the replacement part 2A for a beverage container and the combination of the replacement part 2A for a beverage container and the beverage container 4 in the first embodiment in terms of the arrangement of the annular sealing member 23 and the shape of the tubular member 20. In other respects, the third embodiment is similar to the first embodiment.

[0098] In the third embodiment, differences from the first and second embodiments will be mainly described. On the other hand, in the third embodiment, repeated descriptions of matters already described in the first or second embodiment will be omitted. Therefore, it goes without saying that the matters already described in the first or second embodiment can be applied to the third embodiment even if they are not explicitly described in the third embodiment.

[0099] A replacement part 2C for a beverage container in the third embodiment is a replacement part that can be attached to a beverage outlet tube 52 of a beverage container. The replacement part 2C includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward a bottom 45 of the beverage container 4. Additionally, the replacement part 2C may include a protective sheet 60.

[0100] (Arrangement of the annular seal member 23) In the example shown in FIG. 10, the annular seal member 23 (more specifically, the seal ring 23a) is disposed on the inner peripheral surface (more specifically, the inclined surface) of the top of the tubular member main body 25 (more specifically, the tube portion 26). When the beverage extraction tube 52 is inserted into the tubular member main body 25, the annular seal member 23 is disposed between the top of the tubular member main body 25 and the outer surface 52u of the beverage extraction tube 52. In the example shown in FIG. 10, the annular seal member 23 is disposed in contact with the shoulder portion 52s (more specifically, the shoulder portion supporting the biasing member 55) of the beverage extraction tube 52. The annular seal member 23 prevents the beverage from leaking out from between the tubular member main body 25 and the beverage extraction tube 52. As illustrated in FIG. 11, the tube portion 26 (more specifically, the large diameter portion 261) may be formed with an annular recess 25d in which the annular seal member 23 is disposed.

[0101] (Shape of tubular member 20) In the examples shown in Figs. 2, 7, and 8, the cylindrical member 20 (more specifically, the cylindrical member main body 25) is configured to cover the shoulder 52s of the beverage extraction tube 52, the entire portion of the beverage extraction tube 52 below the shoulder 52s, and a portion of the portion of the beverage extraction tube 52 above the shoulder 52s. In this case, the cylindrical member 20 is stably supported by the beverage extraction tube 52. On the other hand, in the example shown in Fig. 10, the cylindrical member 20 (more specifically, the cylindrical member main body 25) is configured to cover a portion of the shoulder 52s of the beverage extraction tube 52 and the entire portion of the beverage extraction tube 52 below the shoulder 52s, but not to cover the portion of the beverage extraction tube 52 above the shoulder 52s. In this case, the size of the cylindrical member 20 can be made compact.

[0102] (Fourth embodiment) A replacement part 2D for a beverage container in the fourth embodiment and a combination of the replacement part 2D for a beverage container and a beverage container 4 will be described with reference to Fig. 12 and Fig. 13. Fig. 12 is a schematic cross-sectional view showing a combination of the replacement part 2D for a beverage container and the beverage container 4 in the fourth embodiment. Fig. 12 shows a state after the replacement part 2D for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D. Fig. 13 is a schematic cross-sectional view showing a state before the replacement part 2D for a beverage container in the fourth embodiment is attached to the beverage extraction pipe 52.

[0103] The replacement part 2D for a beverage container in the fourth embodiment differs from the replacement part 2A for a beverage container in the first embodiment in that the recess (25d) in which the annular seal member 23 is disposed and the engagement part 20c that engages with the beverage extraction tube 52 are separated from each other, and in that the upper end of the tubular member 20 is positioned below the shoulder part 52s of the beverage extraction tube 52. In other respects, the fourth embodiment is similar to the first embodiment.

[0104] In the fourth embodiment, differences from the first to third embodiments will be mainly described. On the other hand, in the fourth embodiment, repeated descriptions of matters already described in the first, second, or third embodiments will be omitted. Therefore, it goes without saying that the matters already described in the first, second, or third embodiments can be applied to the fourth embodiment even if they are not explicitly described in the fourth embodiment.

[0105] A replacement part 2D for a beverage container in the fourth embodiment is a replacement part that can be attached to a beverage outlet tube 52 of a beverage container. The replacement part 2D includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward a bottom 45 of the beverage container 4. Additionally, the replacement part 2D may include a protective sheet 60.

[0106] (Arrangement of the annular seal member 23) 13, the annular seal member 23 (more specifically, the seal ring 23a) is disposed so as to contact the inner surface of the tubular portion 26 and also contact the upper surface of a connecting portion 267 that connects the large diameter portion 261 and the small diameter portion 264. An annular recess 25d is formed in the upper surface of the connecting portion 267, and the annular seal member 23 is disposed in the annular recess 25d. Also, in the example shown in FIG. 12, the annular seal member 23 is configured to be pressed by the lower end 52e of the beverage extraction pipe 52.

[0107] In the example shown in Fig. 13, the cross section of the seal ring 23a perpendicular to the circumferential direction has a substantially rectangular shape. Alternatively, the cross section of the seal ring 23a perpendicular to the circumferential direction may have a substantially circular or elliptical shape. The seal ring 23a is, for example, molded separately from the tubular member main body 25 and attached to the tubular member main body 25. Alternatively, the seal ring 23a and the tubular member main body 25 may be molded simultaneously in a molding die.

[0108] 13, the tubular member main body 25 has an engagement portion 20c that engages with the beverage extraction tube 52 above the annular seal member 23 (more specifically, at the upper end of the tube portion 26). In the example shown in FIG. 13, the engagement portion 20c is an annular recess that engages with a protrusion 52t of the beverage extraction tube 52. Alternatively, the engagement portion 20c may be a protrusion that engages with a recess of the beverage extraction tube 52.

[0109] Fifth embodiment A replacement part 2E for a beverage container in the fifth embodiment and a combination of the replacement part 2E for a beverage container and a beverage container 4 will be described with reference to Fig. 14 and Fig. 15. Fig. 14 is a schematic cross-sectional view showing a combination of the replacement part 2E for a beverage container and the beverage container 4 in the fifth embodiment. Fig. 14 shows a state after the replacement part 2E for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D. Fig. 15 is a schematic cross-sectional view showing a state before the replacement part 2E for a beverage container in the fifth embodiment is attached to the beverage extraction pipe 52.

[0110] The replacement part 2E for a beverage container in the fifth embodiment differs from the replacement part 2A for a beverage container in the first embodiment in that the cylindrical member 20 engages with the inner surface of the beverage extraction tube 52 (more specifically, the inner peripheral surface of the shoulder portion 52s) and that the upper end of the large diameter portion 261 is positioned below the shoulder portion 52s of the beverage extraction tube 52. In other respects, the fifth embodiment is similar to the first embodiment.

[0111] In the fifth embodiment, differences from the first to fourth embodiments will be mainly described. On the other hand, in the fifth embodiment, repeated descriptions of matters already described in the first, second, third, or fourth embodiments will be omitted. Therefore, it goes without saying that the matters already described in the first, second, third, or fourth embodiments can be applied to the fifth embodiment even if they are not explicitly described in the fifth embodiment.

[0112] A replacement part 2E for a beverage container in the fifth embodiment is a replacement part that can be attached to a beverage outlet tube 52 of a beverage container. The replacement part 2E includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward a bottom 45 of the beverage container 4. Additionally, the replacement part 2E may include a protective sheet 60.

[0113] (Engagement portion 290) 15, the cylindrical member 20 includes an engagement portion 290 that can engage with the inner surface (more specifically, the inner circumferential surface of the shoulder portion 52s) of the beverage extraction pipe 52. The engagement portion 290 is, for example, an engagement portion formed on the leg portion 29 that protrudes upward from the cylindrical member main body 25.

[0114] 15, when the leg 29 is inserted into the beverage extraction tube 52, the leg 29 is configured to be elastically deformed. When the leg 29 returns to its original shape, an engagement portion 290 provided on the leg 29 engages with the inner surface of the beverage extraction tube 52. In the example shown in FIG. 15, in a state in which the engagement portion 290 engages with the inner surface of the beverage extraction tube 52, the lower end 52e of the beverage extraction tube 52 is configured to press the annular seal member 23. In the example shown in FIG. 15, the annular seal member 23 is disposed in an annular recess 25d formed in the tubular member main body 25.

[0115] 14, a shoulder portion 52s of the beverage extraction tube 52 functions as an engagement portion that engages with the tubular member 20. Therefore, it is not necessary to form an engagement portion that engages with the tubular member 20 on an outer surface 52u of the beverage extraction tube 52. Therefore, in the example shown in FIG. 14, a beverage extraction tube 52 that can engage with the tubular member 20 can be formed simply by cutting and shortening an existing beverage extraction tube 52 (see FIG. 1, for example).

[0116] In the fifth embodiment, it is not excluded to form an engagement portion on the outer surface 52u of the beverage extraction tube 52 to engage with the tubular member 20. For example, the engagement portion formed on the outer surface 52u of the beverage extraction tube 52 and the tubular member 20 may be engaged with each other, and the inner surface of the beverage extraction tube 52 and the engagement portion 290 of the tubular member 20 may be engaged with each other.

[0117] Sixth embodiment A replacement part 2F for a beverage container in the sixth embodiment and a combination of the replacement part 2F for a beverage container and a beverage container 4 will be described with reference to Fig. 16. Fig. 16 is a schematic cross-sectional view showing the combination of the replacement part 2F for a beverage container and a beverage container 4 in the sixth embodiment. Fig. 16 shows a state after the replacement part 2F for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with beverage D.

[0118] The replacement part 2F for a beverage container in the sixth embodiment differs from the replacement part 2B for a beverage container in the second embodiment in that the cylindrical member 20 is not formed with an engaging protrusion or an engaging recess for engaging with the beverage extraction tube 52. In other respects, the sixth embodiment is similar to the second embodiment.

[0119] In the sixth embodiment, differences from the first to fifth embodiments will be mainly described. On the other hand, in the sixth embodiment, repeated descriptions of matters already described in the first, second, third, fourth, or fifth embodiments will be omitted. Therefore, it goes without saying that the matters already described in the first, second, third, fourth, or fifth embodiments can be applied to the sixth embodiment, even if they are not explicitly described in the sixth embodiment.

[0120] 16, the tubular member 20 is held by the beverage extraction tube 52 only by frictional forces between the tubular member 20 and the annular seal member 23 and the outer surface 52u of the beverage extraction tube 52, or by adhesive forces between the annular seal member 23 and the outer surface 52u of the beverage extraction tube 52. In the example shown in FIG. 16, no engaging protrusion or engaging recess for engaging with the tubular member 20 is formed on the outer surface 52u of the beverage extraction tube 52. Therefore, in the example shown in FIG. 16, the beverage extraction tube 52 that is inserted into the tubular member 20 and holds the tubular member 20 can be formed by simply cutting and shortening the existing beverage extraction tube 52 (see FIG. 1, for example).

[0121] (How to use replacement parts 2 for beverage containers) Next, a method of using the replacement part 2 for a beverage container in the embodiment will be described with reference to Figs. 2 to 23. Figs. 17 and 18 are flow charts showing an example of a method of using the replacement part 2 for a beverage container in the embodiment. Fig. 19 is a diagram showing a schematic view of a state during an insertion process. Fig. 20 is a diagram showing a schematic view of a state during a beverage filling process. Fig. 21 is a diagram showing a schematic view of a state during a beverage removal process. Fig. 22 is a diagram showing a schematic view of a state during a process of removing the replacement part 2. Fig. 23 is a diagram showing a schematic view of a state in which a new replacement part 2n is attached to the fitting 50 after cleaning.

[0122] The replacement part used in the method of using replacement part 2 for a beverage container in the embodiments may be replacement part 2A for a beverage container in the first embodiment, replacement part 2B for a beverage container in the second embodiment, replacement part 2C for a beverage container in the third embodiment, replacement part 2D for a beverage container in the fourth embodiment, replacement part 2E for a beverage container in the fifth embodiment, replacement part 2F for a beverage container in the sixth embodiment, or any other replacement part for a beverage container.

[0123] The replacement part 2 for a beverage container is a replacement part that can be attached to the beverage outlet tube 52 of the beverage container. The replacement part 2 includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward the bottom 45 of the beverage container 4. Additionally, the replacement part 2 may include a protective sheet 60. The tubular member 20, the bag body 30, the second beverage outlet tube 28, and the protective sheet 60 have been described in the first to sixth embodiments, so repeated descriptions of these members will be omitted.

[0124] The beverage container 4 to which the beverage container replacement part 2 is attached includes a beverage container body 40, a mouth part 44, and a beverage extraction tube 52 (or a fitting 50 having the beverage extraction tube 52). The beverage container body 40, the mouth part 44, and the beverage extraction tube 52 (or a fitting 50 having the beverage extraction tube 52) have been described in the first to sixth embodiments, so repeated description of these members will be omitted.

[0125] In a first step ST1, a fitting 50 to be attached to the mouthpiece 44 of the beverage container 4 is prepared. The first step ST1 is a fitting preparation step. The fitting 50 has a beverage outlet pipe 52 (more specifically, a stainless steel beverage outlet pipe 52). The fitting 50 may have a beverage valve V1, a gas valve V2, and / or an attachment part 51 (more specifically, a stainless steel attachment part) to be attached to the mouthpiece 44. The fitting 50 may also have a removal prevention member 59.

[0126] The fitting 50 prepared in the first step ST1 may be a brand new fitting, or may be a fitting that has been used to dispense a beverage and has been cleaned.

[0127] In the second step ST2, a replacement part 2 for a beverage container is prepared. The second step ST2 is a preparation step of the replacement part 2. The replacement part 2 prepared in the second step ST2 is an assembly (in other words, an assembly) having a tubular member 20, a pouch 30, and a second beverage extraction tube 28. The assembly is produced, for example, by welding the pouch 30 to the tubular member 20 and attaching the second beverage extraction tube 28 to the tubular member 20. The step of welding the pouch 30 to the tubular member 20 is performed, for example, before the step of attaching the second beverage extraction tube 28 to the tubular member 20. The replacement part 2 prepared in the second step ST2 may be an assembly (in other words, an assembly) having the tubular member 20, the pouch 30, the second beverage extraction tube 28, and a protective sheet 60. In this case, the assembly is produced, for example, by welding the bag body 30 and the protective sheet 60 to the tubular member 20, and attaching the second beverage outlet pipe 28 to the tubular member 20. Alternatively, the assembly having the tubular member 20, the bag body 30, and the second beverage outlet pipe 28, and the protective sheet 60 do not have to be integrated with each other.

[0128] The second step ST2 may be performed after the first step ST1, may be performed before the first step ST1, or may be performed simultaneously with the first step ST1.

[0129] In a third step ST3, the replacement part 2 for a beverage container is attached to the fitting 50. The third step ST3 is an attachment step. The third step ST3 (attachment step) is performed by attaching the tubular member 20 to the lower end 521 of the beverage extraction tube 52 that constitutes a part of the fitting 50. When the tubular member 20 and the protective sheet 60 are integrated, when the tubular member 20 is attached to the beverage extraction tube 52, the protective sheet 60 is also attached to the beverage extraction tube 52. On the other hand, when the tubular member 20 and the protective sheet 60 are not integrated, the protective sheet 60 is attached to the beverage extraction tube 52 after the protective sheet 60 is attached to the beverage extraction tube 52. The state in which the third step ST3 is being performed is shown in FIG. 3, FIG. 6, FIG. 9, FIG. 11, FIG. 13, and FIG. 15. The third step ST3 is executed, for example, by linearly moving the cylindrical member 20 relative to the beverage outlet pipe 52 in a direction along the central axis of the beverage outlet pipe 52.

[0130] In the example shown in Figs. 3 and 6, in the third step ST3, the lower end 521 of the beverage extraction tube 52 is inserted into the tubular member 20. Furthermore, the beverage extraction tube 52 (more specifically, the lower end 52e of the beverage extraction tube 52) engages with the engagement portion (26c) of the tubular member 20. In the example shown in Figs. 3 and 6, by performing the third step ST3, the lower end 52e of the beverage extraction tube 52 presses the annular seal member 23. Furthermore, the shoulder portion 52s of the beverage extraction tube 52 is covered by the tubular member 20 (more specifically, the tube portion 26).

[0131] In the example shown in FIG. 9, in the third step ST3, the lower end 521 of the beverage extraction pipe 52 is inserted into the tubular member 20. Furthermore, the beverage extraction pipe 52 (more specifically, the annular protrusion 52t) engages with the engagement portion (20d) of the tubular member 20. In the example shown in FIG. 9, by performing the third step ST3, the outer surface 52u of the beverage extraction pipe 52 (more specifically, a portion located above the shoulder portion 52s) comes into contact with the annular seal member 23. Furthermore, the shoulder portion 52s of the beverage extraction pipe 52 is covered by the tubular member 20 (more specifically, the tube portion 26).

[0132] 11, in a third step ST3, the lower end 521 of the beverage extraction pipe 52 is inserted into the tubular member 20. Furthermore, the beverage extraction pipe 52 (more specifically, the annular protrusion 52t) engages with the engagement portion (20d) of the tubular member 20. In the example shown in FIG. 11, by performing the third step ST3, an outer surface 52u of the beverage extraction pipe 52 (more specifically, the outer peripheral surface of the shoulder portion 52s) comes into contact with the annular sealing member 23.

[0133] 13, in a third step ST3, the lower end 521 of the beverage extraction pipe 52 is inserted into the tubular member 20. Furthermore, the beverage extraction pipe 52 (more specifically, the annular protrusion 52t) engages with the engagement portion (20c) of the tubular member 20. In the example shown in FIG. 13, the execution of the third step ST3 causes the lower end 52e of the beverage extraction pipe 52 to press against the annular sealing member 23.

[0134] 15, in the third step ST3, the engaging portion 290 provided on the tubular member 20 is inserted into the lower end portion 521 of the beverage extraction tube 52. Furthermore, the engaging portion 290 engages with the shoulder portion 52s of the beverage extraction tube 52. Furthermore, in the example shown in FIG. 15, the execution of the third step ST3 causes the lower end 52e of the beverage extraction tube 52 to press the annular sealing member 23.

[0135] In a fourth step ST4, the fitting 50 to which the replacement part 2 is attached is inserted into the beverage container 4 (more specifically, the internal space of the beverage container 4 defined by the beverage container body 40 and the mouthpiece 44). The fourth step ST4 is an insertion process. FIG. 19 shows a state in which the fourth step ST4 is being performed. Note that FIG. 19 shows a state in which the replacement part 2D in the fourth embodiment is inserted into the beverage container 4. Of course, the replacement part 2 inserted into the beverage container 4 may be the replacement part 2A in the first embodiment, the replacement part 2B in the second embodiment, the replacement part 2C in the third embodiment, the replacement part 2E in the fifth embodiment, the replacement part 2F in the sixth embodiment, or a replacement part in another embodiment.

[0136] The inserting step is performed in a state where the bag body 30 is folded around the second beverage extraction tube 28 or wrapped around the second beverage extraction tube 28. The second beverage extraction tube 28 is preferably a rigid tube. When the second beverage extraction tube 28 is a substantially inflexible rigid tube and is long, the second beverage extraction tube 28 around which the bag body 30 is arranged can be smoothly inserted into the beverage container 4. In addition, since the outer diameter of the second beverage extraction tube 28 is small (for example, the outer diameter is 14 mm or less), the bag body 30 arranged around the second beverage extraction tube 28 can be made compact.

[0137] In a fifth step ST5, the attachment portion 51 of the fitting 50 is attached to the mouth portion 44 of the beverage container 4. The fifth step ST5 is a second attachment process.

[0138] In the example shown in FIG. 19, the fitting 50 is attached to the base portion 44 by screwing the male thread portion 51s of the fitting 50 into the female thread portion 44f of the base portion 44.

[0139] By carrying out the first step ST1 to the fifth step ST5, a double container consisting of a bag body 30 which is an inner container and a beverage container 4 which is an outer container having greater rigidity than the bag body 30 is formed.

[0140] Next, a process of filling the pouch 30 placed in the beverage container 4 with a beverage (in other words, a beverage filling method of filling the pouch 30 placed in the beverage container 4 with a beverage) will be described.

[0141] After the fifth step ST5 is performed, in a sixth step ST6, the bag 30 placed in the beverage container 4 is filled with a beverage. The sixth step ST6 is a beverage filling step. FIG. 20 shows a state in which the sixth step ST6 (beverage filling step) is being performed. In FIG. 20, a filling nozzle for filling the bag 30 with a beverage is omitted in order to avoid complicating the drawing. In the example shown in FIG. 20, the beverage filling step is performed with the beverage container 4 in an inverted state, in other words, with the nozzle 44 of the beverage container 4 positioned below the bottom 45 of the beverage container 4. Alternatively, the beverage filling step may be performed with the beverage container 4 in an upright state.

[0142] When filling the bag body 30 with a beverage, first, in sub-step ST6-1, the tip of the filling nozzle is inserted into the fitting 50. By inserting the filling nozzle, the beverage valve V1 is opened and the gas valve V2 is opened. Secondly, in sub-step ST6-2, as shown by arrow E in FIG. 20, the beverage is supplied from the filling nozzle into the bag body 30 through the beverage valve V1, and as shown by arrow F in FIG. 20, gas (more specifically, air) present in the space between the beverage container 4 and the bag body 30 is discharged to the outside of the beverage container 4 through the gas valve V2. In this way, the bag body 30 is filled with the beverage.

[0143] In the example shown in Fig. 20, the shape of the mouth part 44 is similar to that of the mouth part of an existing stainless steel beverage container, and the shape of the upper end part of the fitting 50 is similar to that of the upper end part of the existing fitting 10 (see Fig. 1). Therefore, in the example shown in Fig. 20, the bag body 30 in the beverage container 4 can be filled with beverage using an existing beverage filling system.

[0144] Next, a process of removing a beverage from the pouch 30 placed in the beverage container 4 (in other words, a beverage removal method for removing a beverage from the pouch 30 placed in the beverage container 4) will be described.

[0145] The seventh step ST7 (in other words, the beverage taking-out step) is performed after the beverage filling step (sixth step ST6). In the seventh step ST7, the beverage is taken out from the bag 30 arranged in the beverage container 4. FIG. 21 shows the seventh step ST7 (beverage taking-out step) being performed.

[0146] In the example shown in FIG. 21, the removal of the beverage from the pouch 30 is carried out via the dispense head 8 .

[0147] In the beverage taking-out process, first, in sub-step ST7-1, the dispense head 8 is attached to the fitting 50 attached to the mouthpiece 44 of the beverage container 4. The attachment is performed, for example, by engaging the second engagement portion 81g provided on the main body 80 of the dispense head 8 with the engagement portion 51g of the fitting 50.

[0148] In the example shown in FIG. 21, the dispense head 8 includes a main body portion 80 and a plunger member 85 that is movable relative to the main body portion 80.

[0149] The above-mentioned second engagement portion 81g is provided at the lower end of the main body portion 80, and a first seal member S1 (annular seal member) is held at the lower end of the main body portion 80. When the dispense head 8 is attached to the fitting 50, the first seal member S1 seals between the main body portion 80 and the fitting 50. The main body portion 80 is provided with a gas introduction hole 80h for introducing a gas such as air.

[0150] A beverage flow path P1 is provided inside the plunger member 85. A check valve V3 may be disposed inside the plunger member 85.

[0151] A second seal member S2 (annular seal member) is disposed on the outer surface of the plunger member 85 to seal between the plunger member 85 and the first valve member 56. In the example shown in FIG. 21, the first valve member 56 functions as the valve body VA2 of the gas valve V2 and has a valve seat portion VB1 of the beverage valve V1. The lower end of the plunger member 85 has a pressing portion 851 that presses the second valve member 57. In the example shown in FIG. 21, the second valve member 57 functions as the valve body VA1 of the beverage valve V1.

[0152] A gas flow path P2 is provided between the plunger member 85 and the main body 80. When the plunger member 85 is in the upper position, the gas flow path P2 and the gas introduction hole 80h are not in communication with each other. When the plunger member 85 is in the upper position, the pressing portion 851 is separated from the second valve member 57. When the plunger member 85 is in the upper position, the second seal member S2 is separated from the first valve member 56.

[0153] Secondly, in the beverage extraction process, in sub-step ST7-2, the beverage valve V1 is opened. Sub-step ST7-2 is a beverage valve opening process. The beverage valve V1 is opened, for example, by moving the plunger member 85 from an upper position to a lower position. When the plunger member 85 moves to the lower position, the pressing portion 851 of the plunger member 85 presses the valve body VA1 of the beverage valve V1. As a result, the valve body VA1 is separated from the valve seat portion VB1, and the beverage valve V1 is opened.

[0154] As shown in Fig. 21, when the plunger member 85 is in the lower position, the second seal member S2 contacts the first valve member 56. Thus, the beverage flow path P1 of the plunger member 85 and the gas flow path P2 between the plunger member 85 and the main body 80 are isolated from each other. In the example shown in Fig. 21, when the plunger member 85 moves towards the lower position, the gas valve V2 is also opened. In the example shown in Fig. 21, the second seal member S2 functions as a pressing part that presses the valve body VA2 of the gas valve V2.

[0155] As shown in FIG. 21, when the plunger member 85 moves toward the downward position, the gas introduction hole 80h and the gas flow path P2 communicate with each other.

[0156] Thirdly, in the beverage taking-out process, in sub-step ST7-3, gas (e.g., air) is supplied to the first space SP1 between the beverage container 4 and the bag body 30. The gas is supplied via the dispense head 8. Sub-step ST7-3 is a gas supplying step.

[0157] More specifically, in sub-step ST7-3, gas supplied from a gas supply source (e.g., an air pump) is introduced into the gas introduction hole 80h (see arrow M in FIG. 21). The gas introduced into the gas introduction hole 80h is supplied to the first space SP1 between the beverage container 4 and the bag body 30 via the gas flow path P2 (see arrow N in FIG. 21). The gas supplied into the first space SP1 presses the bag body 30 so that the bag body 30 contracts.

[0158] Fourthly, in the beverage dispensing step, in sub-step ST7-4, the beverage is dispensed from the bag 30. The beverage is dispensed via the beverage valve V1 and the dispense head 8.

[0159] Sub-step ST7-4 will be described in more detail. By performing the above-mentioned sub-step ST7-3 (gas supply step), the bag body 30 is pressed inward. Therefore, the beverage in the bag body 30 moves toward the beverage valve V1 through the internal space of the second beverage extraction pipe 28 and the internal space of the beverage extraction pipe 52. In the above-mentioned sub-step ST7-2 (beverage valve opening step), the beverage valve V1 is opened, so the beverage in the internal space of the beverage extraction pipe 52 is taken out to the outside of the dispense head 8 through the beverage valve V1 and the beverage flow path P1 of the plunger member 85 (see the arrow W in FIG. 21).

[0160] In the beverage taking-out method in the embodiment, a beverage is taken out of the bag body 30 by supplying gas to the first space SP1 between the beverage container 4 and the bag body 30. Therefore, the beverage in the bag body 30 does not come into contact with the supply gas (e.g., air) supplied through the dispense head 8. Therefore, the taste, texture, etc. of the beverage are not deteriorated due to the beverage coming into contact with the supply gas. Furthermore, if the beverage is a sparkling beverage such as beer, the feel of the foam is not deteriorated. Therefore, the quality of the beverage in the bag body 30 is maintained at a high quality even after a long period of time (e.g., after four days or more have passed) since the start of taking out the beverage from the bag body 30 in the beverage container 4.

[0161] Furthermore, in the beverage taking-out method in the embodiment, air can be used as the gas supplied to the first space SP1 between the beverage container 4 and the bag body 30. Therefore, unlike the conventional beverage taking-out method, it is not necessary to prepare a carbon dioxide gas cylinder. When preparing a carbon dioxide gas cylinder, it is necessary to prepare multiple carbon dioxide gas cylinders including a spare cylinder. In addition, it is necessary to monitor the remaining amount of CO2 in the carbon dioxide gas cylinder, carry in the carbon dioxide gas cylinder, replace it, and so on. In addition, space is also required to place multiple carbon dioxide gas cylinders. In contrast, in the beverage taking-out method in the embodiment, it is only necessary to prepare a small air pump as a gas supply source instead of multiple carbon dioxide gas cylinders. Therefore, it is possible to take out a beverage from the bag body 30 in the beverage container 4 even in a small store with limited space or outdoors. Note that using air as the gas supplied to the first space SP1 is an optional configuration. In other words, in the embodiment, it is not excluded to use a gas other than air (e.g., carbon dioxide gas) as the gas supplied to the first space SP1 between the beverage container 4 and the bag body 30.

[0162] When the beverage container 4 is made of stainless steel, the beverage container 4 has extremely high durability and corrosion resistance, and has excellent light blocking properties. Therefore, the beverage container 4 with the bag body 30 disposed therein may be stored outdoors.

[0163] Next, the process of removing the replacement part 2 from the fitting 50 (in other words, a method of removing the replacement part 2 from the beverage extraction pipe 52) will be described.

[0164] The eighth step ST8 (in other words, the step of removing the replacement part) is performed after the beverage taking-out step (the seventh step ST7). In the eighth step ST8, the replacement part 2 is removed from the fitting 50.

[0165] In the process of removing the replacement part, first, in sub-step ST8-1, the fitting 50 to which the replacement part 2 is attached is removed from the beverage container 4. The removal is performed, for example, by releasing the engagement (more specifically, screwing) between the mouth part 44 of the beverage container 4 and the fitting 50, and then pulling out the fitting 50 from the beverage container 4. FIG. 22 shows a state in which sub-step ST8-1 is being performed. It goes without saying that the dispense head 8 is removed from the fitting 50 before performing sub-step ST8-1.

[0166] 22, the lower end of the nozzle portion 44 has a tapered surface 44t for smoothly reducing the diameter of the bag body 30 (and the protective sheet 60) that comes into contact with the lower end of the nozzle portion 44 when the replacement part 2 is removed from the beverage container 4. This allows the bag body 30 (and the protective sheet 60) to be smoothly removed from the beverage container 4.

[0167] Secondly, in the step of removing the replacement part, in sub-step ST8-2, the replacement part 2 is removed from the fitting 50 that has been removed from the beverage container 4 (see the left diagram in FIG. 23). Sub-step ST8-2 is a step of removing the replacement part. The removal step is performed, for example, by pulling out the beverage extraction tube 52 from the tubular member 20. Sub-step ST8-2 is performed, for example, by linearly moving the tubular member 20 relative to the beverage extraction tube 52 in a direction along the central axis of the beverage extraction tube 52.

[0168] It is preferable that the beverage outlet pipe 52 or the fitting 50 from which the replacement part 2 has been removed and the beverage container 4 are reused the next time the beverage is filled. Fig. 23 shows that the fitting 50 is cleaned and reused.

[0169] On the other hand, it is preferable that a replacement part 2 that has been used once is replaced with a new replacement part 2n (more specifically, a brand new replacement part). Since the structure of the replacement part 2 in the embodiment is simple, the manufacturing cost of the replacement part 2 is low.

[0170] 23, in a ninth step ST9, after the fitting 50 is cleaned, a new replacement part 2n is attached to the fitting 50. The ninth step ST9 is a reattachment step. The new replacement part 2n is preferably a part having the same shape and structure as the replacement part 2 removed from the fitting in sub-step ST8-2.

[0171] The fitting 50 to which the new replacement part 2n is attached in the reinstallation process is a part that is cleaned and reused. In this case, the operating cost of the beverage container 4 as a whole is reduced. More specifically, the expensive beverage container 4 and the fitting 50 are made reusable and the inexpensive replacement part 2 is made disposable, thereby reducing the operating cost of the beverage container as a whole.

[0172] In the embodiment, the bag body 30 is filled with a beverage, and the beverage does not come into direct contact with the reusable beverage container 4. This reliably ensures the safety of the beverage. In addition, since the beverage does not come into direct contact with the beverage container body 40 to be reused, adhesion of organic matter (dirt) or odors to the inside of the beverage container body 40 is suppressed. For these reasons, the beverage container 4 can be easily managed when collected and reused. In addition, the process of cleaning the beverage container 4 can be simplified.

[0173] Seventh embodiment In the first to sixth embodiments, the fitting 50 is a well-type fitting having a recess 50a (see FIG. 22, for example) formed on the top of the fitting. Alternatively, the fitting 50 in the embodiments may be a flat-type fitting having a substantially flat top.

[0174] Fig. 24 is a schematic cross-sectional view showing a combination of a replacement part 2G for a beverage container and a beverage container 4 in the seventh embodiment. Fig. 24 shows a state after the replacement part 2G for a beverage container is attached to the beverage container 4 and the bag body 30 is filled with a beverage D.

[0175] The seventh embodiment differs from the first to sixth embodiments in that a replacement part 2G is a part attached to a beverage extraction pipe 52 constituting a part of a flat-type fitting 50. In other respects, the seventh embodiment is similar to any of the first to sixth embodiments.

[0176] In the seventh embodiment, differences from the first to sixth embodiments will be mainly described. On the other hand, in the seventh embodiment, repeated descriptions of matters already described in the first, second, third, fourth, fifth, or sixth embodiments will be omitted. Therefore, it goes without saying that the matters already described in the first, second, third, fourth, fifth, or sixth embodiments can be applied to the seventh embodiment, even if they are not explicitly described in the seventh embodiment.

[0177] A replacement part 2G for a beverage container in the seventh embodiment is a replacement part that can be attached to a beverage outlet tube 52 (more specifically, a stainless steel beverage outlet tube 52) of a beverage container. The replacement part 2G includes a tubular member 20 attached to the beverage outlet tube 52, a bag body 30 attached to the tubular member 20 or the second beverage outlet tube 28, and a second beverage outlet tube 28. The second beverage outlet tube 28 extends from the tubular member 20 toward a bottom 45 of the beverage container 4. Additionally, the replacement part 2G may include a protective sheet 60.

[0178] In the example shown in FIG. 24, the tubular member 20 includes a tubular member main body 25 and an annular seal member 23 (more specifically, a seal ring 23a) disposed between the beverage extraction tube 52 and the tubular member main body 25. The annular seal member 23 is configured to be pressed by the lower end 52e of the beverage extraction tube 52. In the example shown in FIG. 24, the tubular member 20 has a recess (20c) that engages with the annular protrusion of the beverage extraction tube 52. Alternatively, the tubular member 20 may have a protrusion that engages with the annular recess of the beverage extraction tube 52. In the example shown in FIG. 24, the tubular member 20 includes a large diameter portion 261 facing the beverage extraction tube 52, a small diameter portion 264 connected to the second beverage extraction tube 28, and a connecting portion 267 that connects the large diameter portion 261 and the small diameter portion 264. In the example shown in FIG. 24, the protective sheet 60 is a non-bag-shaped sheet disposed above the bag body 30. The protective sheet 60 has a through hole through which the beverage outlet pipe 52 or the tubular member 20 can be inserted.

[0179] In the combination of the beverage container replacement part 2G and the beverage container 4 in the seventh embodiment, the beverage container 4 includes a beverage container body 40, a mouth part 44, and a beverage extraction pipe 52 disposed in an internal space defined by the mouth part 44 and the beverage container body 40. The beverage container body 40, the mouth part 44, and the beverage extraction pipe 52 have been described in detail in the first to sixth embodiments, and therefore repeated descriptions of these members will be omitted. Among the members constituting the beverage container 4, those having the same functions as the members constituting the beverage container 4 in the first embodiment are given the same reference numerals as those given to the members constituting the beverage container 4 in the first embodiment, and the description of the members to which these reference numerals are given will be referred to in the description of the first embodiment.

[0180] The method of using the replacement part 2G for beverage containers in the seventh embodiment can employ the method of using the replacement part 2 for beverage containers described above. Each step of the method of using the replacement part for beverage containers (first step ST1 to ninth step ST9, substeps ST6-1 and ST6-2, substeps ST7-1 to ST7-4, substeps ST8-1 and ST8-2) has already been described in detail using Figures 2 to 23, so repeated description of each step of the method of using the replacement part 2G for beverage containers will be omitted.

[0181] The seventh embodiment provides the same effects as the first to sixth embodiments.

[0182] The present invention is not limited to the above-described embodiments, and it is clear that each embodiment or modification can be appropriately modified or changed within the scope of the technical concept of the present invention. In addition, various techniques used in each embodiment or modification can be applied to other embodiments or other modifications as long as no technical contradiction occurs. Furthermore, any additional configurations in each embodiment or modification can be omitted as appropriate.

[0183] The beverage container replacement part 2 in the embodiment can be applied to any container in which a beverage outlet pipe is disposed inside the beverage container. For example, the beverage container replacement part 2 can be applied to a drum can in which a beverage outlet pipe is disposed inside. [Explanation of symbols]

[0184] 1: Beverage storage container 2, 2A, 2B, 2C, 2D, 2E, 2F, 2G: Replacement parts for beverage containers 2n: New replacement parts 4: Beverage container 8: Dispense head 10: Fitting 10s: Male thread part 15: Cap part 15s: Female thread 20: Cylindrical member 20c: Engagement part 20d: Recess 23: Annular sealing member 23a: Seal ring 25: Cylindrical member body 25d: Recess 26:Cylinder part 26a: Upper end 26b: Bottom end 26c: Engagement recess 27: Flange 27n : Common-law marriage 27u: Outer edge 28:Second beverage outlet pipe 28c: Engagement part 28e: bottom edge 29: Legs 30: Bag body 31h: Through hole 40: Beverage container body 44: Cap part 44f: Female thread 44t: Tapered surface 45: Bottom 46: Torso 47:Shoulder 48: Bottom protector 49: Top protector 50: Fitting 50a: Recess 51: Mounting part 51g: Engagement part 51k: Inclined surface 51s: Male thread 52: Beverage removal pipe 52e: bottom edge 52s:Shoulder 52t:Protrusion 52u: External surface 54: Outer cylinder 54h: Through hole part 55: Pressing member 55b: Second biasing member 56: First valve member 57: Second valve member 59: Removal prevention member 60: Protective sheet 60e: outermost edge 60h: Through hole 80: Main body 80h: Gas inlet 81g: 2nd engaging part 85: Plunger member 261: Large diameter section 261a: Large diameter section 2 261b: Large diameter section 1 264: Small diameter part 264c: Engagement part 267 :Connection part 267w: Circular wall 281: Tsuba section 290: Engagement part 521: Bottom end 523 :Second part 550: Spring support member 851: Pressing part B: Connection part D: Beverage G: Gas OP: Opening P1: Beverage flow path P2: Gas flow path S1: First sealing member S2: Second seal member SP1: 1st space V1: Beverage valve V2: Gas valve V3: Check valve VA1: Beverage valve body VA2: Gas valve body VB1: Seat of beverage valve VB2: Gas valve seat

Claims

1. 1. A method of using a replacement part for a beverage container, comprising: The replacement part is A cylindrical member attached to a beverage outlet pipe of a beverage container; a second beverage outlet pipe extending from the tubular member toward a bottom of the beverage container; a bag body attached to the tubular member or the second beverage outlet pipe for containing a beverage; Equipped with The method of use includes: providing a fitting to be attached to a nozzle of the beverage container; an attachment step of attaching the replacement part to the fitting by attaching the tubular member to a lower end of the beverage outlet pipe that constitutes a part of the fitting; an inserting step of inserting the fitting having the replacement part attached thereto into the beverage container; a second attachment step of attaching the attachment portion of the fitting to the mouthpiece of the beverage container; Equipped with How to use replacement parts for beverage containers.

2. By performing the attachment step, the lower end of the beverage outlet pipe is inserted into the tubular member, or the engaging portion of the tubular member is inserted into the lower end of the beverage outlet pipe.

13. A method of using the replacement part for a beverage container according to claim 1.

3. The beverage outlet tube has a shoulder, By carrying out the mounting step, the shoulder portion is covered by the tubular member, or an engaging portion of the tubular member is engaged with the shoulder portion.

3. A method of using the replacement part for a beverage container according to claim 2.

4. a removal step of removing the replacement part from the fitting; a reinstallation step of installing a new replacement part in the fitting; Further comprising: The fitting to which the new replacement part is attached in the reinstallation step is a part that is cleaned and reused.

4. Use of a replacement part for a beverage container according to any one of claims 1 to 3.

5. The attaching step includes attaching the replacement part to the fitting such that an upper end of a cylindrical portion of the cylindrical member is disposed opposite an outer surface of the beverage outlet pipe.

5. Use of a replacement part for a beverage container according to any one of claims 1 to 4.

6. The method further includes filling the pouch disposed within the beverage container with the beverage; the fitting having a beverage valve and a gas valve; The step of filling the bag with the beverage includes: inserting a tip of a filling nozzle into the fitting to open the beverage valve and the gas valve; supplying the beverage from the filling nozzle into the bag through the beverage valve, and discharging gas present in a space between the beverage container and the bag to the outside of the beverage container through the gas valve; Includes 6. Use of a replacement part for a beverage container according to any one of claims 1 to 5.

Images