JPH0547074Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention promotes the vaporization of carbon dioxide gas dissolved in the beer in the container when a beer container such as a can of beer is opened, thereby causing bubbles of carbon dioxide gas. The present invention relates to a container containing a foam generator capable of generating foam. BACKGROUND TECHNOLOGY Conventionally, beer poured into a beer bottle from a bottle or barrel is poured into a beer bottle under a constant pressure of carbon dioxide gas, which releases the pressurized state and dissolves into the beer. It is thought that it is produced by the rapid vaporization of carbon dioxide gas. On the other hand, many inventions and ideas have been made to produce fine bubbles even in metal cans or plastic containers such as Nos. 2 and 3. These inventions and ideas include, for example, a method of creating a shear velocity gradient in the beer liquid by making the flow of beer into a trickle, and a method of creating vibrations on the surface of the beer by hitting the liquid surface of the poured beer with the trickle of beer. There are methods of feeding the beer, but these methods cannot be effective unless the beer is transferred from the container to a mug or the like. Therefore, a foam generator has been developed that generates foam in the beer liquid without having to transfer the beer from the container to a brewer or the like. An example of such a conventional foam generator is shown in FIGS. 9 to 11.
In FIG. 9, 50 is a container body, and a bubble generator 51 is fixedly installed on the bottom surface 50a of this container body 50. That is, as shown in FIGS. 9 to 11, the bubble generator 51 is fixedly fixed to the bottom part 50a by applying an adhesive to the upper surface of the fixing part 51a. A certain groove 51e is formed around the fixed part 51a, and the movable knob part 51
b is provided. This movable knob part 51b
is elastically supported by a bridging portion 51c that is continuous with the fixed portion 51a. In addition, the movable knob part 5
A protrusion 51d is formed on 1b to propagate vibration from the bottom 50a into the beer liquid upon impact. To generate bubbles, after opening the can, put your finger on the movable knob 51b of the bubble generator 51, deform it so as to pull it away from the bottom 50a, and then quickly release it. The portion 51b attempts to return to its original position due to elastic restoring force, and gives an instantaneous impact to the bottom portion 50a. By repeating this multiple times, from the beer that touches the bottom,
Fine bubbles form and rise upwards. Problems to be solved by the invention However, in such a conventional invention, after the container body 50 is opened, the movable knob portion formed on the foam generator 51 attached to the bottom surface 50a of the container body 50 is removed. Flick 51b with your finger and press the protrusion 51d
It was necessary to touch the bottom surface 50a with the bottom surface 50a, which was very troublesome. Therefore, this idea allows you to drink canned beer as it is without having to pour it into a pot or pour it.
Operation to transfer beer to another place and bottom surface 50 of the can body
It is an object of the present invention to provide a beer container that can automatically generate foam when the can is opened without performing an operation such as flicking a foam generator 51 provided in a with a finger. Means for Solving the Problem In order to achieve this object, this invention is a beer container that has a foam generator 2 for generating foam built into the container body 1, and the foam generator 2 has a cylindrical or prismatic shape. Alternatively, it is formed in the shape of a truncated cone or a truncated pyramid. By recessing the top surface 3 of this foam generator 2 downward to form a recess 4 inside,
The top surface 3 of the foam generator 2, the outer wall 5, and the inner wall 6 of the recess 4
An air storage section 7 is formed in the gap surrounded by , and a plurality of openings 9 are bored in the bottom surface 8 of the recess 4 . Furthermore, as an embodiment of the foam generator 2, the bottom 13 is formed in a hollow state, and is attached to the bottom surface 1a of the container body 1 via the flange 10 or the mounting legs 11 provided on the bottom 13 of the foam generator 2. It is fixed. Function The function of this device having the above structure will be explained. A container body 1 incorporating a foam generator 2 according to this invention is filled with low-temperature beer in which carbon dioxide gas is dissolved, and a lid 1b is rolled up to produce a canned beer product. After filling the container body 1 with beer, when the liquid temperature of the beer rises to room temperature and the pressure inside the container body 1 rises, the beer flows into the foam generator 2 through the opening hole 9, and the beer flows into the bottom of the foam generator 2. It accumulates in and,
As the inflow amount increases, the liquid level becomes higher than the liquid level at the time of filling, and the volume inside the bubble generator 2 decreases due to the inflowing liquid amount, and the air in the air storage section 7 is compressed and at the same time , carbon dioxide gas separation occurs to reach an equilibrium state up to room temperature, and the pressure inside the bubble generator 2 increases. When the container body 1 is opened in this state, the pressure inside the container body 1 will drop to atmospheric pressure, and the air or carbon dioxide trapped inside the bubble generator 2 will return from its compressed state to its normal state. It begins to expand rapidly and the internal pressure drops to atmospheric pressure. As a result, liquid, gas, or a mixture of liquid and gas is ejected into the beer liquid from the opening hole 9 of the foam generator 2, and this ejection creates a complicated velocity gradient in the beer liquid. The vaporization of the carbon dioxide gas dissolved in the beer liquid is promoted, and the ejection creates turbulence in the beer liquid, and this turbulence propagates to the top of the beer liquid and expands, further promoting the vaporization of carbon dioxide gas. It is something to do. Then, creamy and fine foam is generated on the surface of the beer liquid. moreover,
Another feature of this invention is that, as shown in FIGS. 6 and 7, even when the container body 1 is laid down on its side or upside down, the foam generator 2
A certain amount of air always remains inside.
This is because the pressure balance between the air inside the foam generator 2 and the beer liquid inside the container body 1 is always constant and does not collapse, and the density of the gas inside the foam generator 2 is lower than that of beer. This is because the structure is designed to prevent gas from being released from the tube. For example, as shown in FIG. 6, even if it falls down due to vibration during transportation, the opening hole 9 will remain liquid-sealed with beer.
There is no escape route for the gas in the air storage section 7, and a gas phase is secured. Although FIG. 7 shows the case where the beer is inverted, the gas is not released from the opening 9 because its density is lower than that of beer. Therefore, no matter what condition the can is placed in, when the can is opened, the foam generator will secure gas in the air reservoir 7 and generate creamy foam. Embodiment Next, this invention will be explained based on the drawings. Figures 1 to 8 show a foam generator 2 according to this invention.
1 is a drawing showing an embodiment of a container main body 1 and a foam generator 2 that have a built-in container. In FIG. 1, 1 is a container body, and a bubble generator 2 is fixed to a bottom surface 1a inside the container body 1. In the embodiment shown in FIG. 1, this foam generator 2 is formed into a cylindrical shape, with a diameter of 20 mm and a height
30mm, diameter of recess 4 is 15mm, depth of recess 4 is 22
mm. The container body 1 that houses this foam generator 2 has a can diameter of 65 mm, a can height of 115 mm, and a volume.
It is a 300ml aluminum can. Foam generator 2
The dimensions can be arbitrarily designed in consideration of the amount of bubbles generated corresponding to the volume of the container body 1, and the external shape of the bubble generator 2 may be cylindrical, prismatic, or cylindrical. A truncated conical shape etc. can be considered. Furthermore, in this invention, the top surface 3 of the foam generator 2 is recessed downward to form a recess 4 inside the foam generator 2, and an air storage section 7 surrounded by the top surface 3, the outer wall 5, and the inner wall 6. This opening hole 9
The number can be set arbitrarily. Also, the opening hole 9
needs to be large enough to allow beer and carbon dioxide to blow out and flow out at a rate fast enough to cause turbulence in the flow of beer liquid. If it is too large, the speed at the time of outflow will be low, and if it is too small, the speed at the time of outflow will be low due to the resistance of the opening hole 9. In addition, the shape of the opening hole 9 may be polygonal, star-shaped, etc. in addition to a circular diameter, and the cross section of the opening hole 9 is not limited to a straight one, but may be wavy to cause turbulence to the flow. It may be of. Regarding the diameter and number of openings 9 that produce a preferable creamy foam, the following experiments were conducted and the results shown in Table 1 were obtained.

[Table] In this experimental method, beer cooled to 5° C. is poured into a container containing a foam generator 2 inside the container body 1, and the lid 1b is tightened. Thereafter, the temperature was raised to 25°C, then cooled to 2.5°C again, and the can was opened. Then, the height of the foam at its highest point was measured using the scale shown in FIG. From the experimental results, when the opening hole 9 has a diameter of 2 mm, almost no bubbles are generated regardless of the number of holes. This is thought to be because the flow rate of the beer and carbon dioxide ejected from the opening 9 of the foam generator 2 is slow, so that the turbulence imparted to the beer liquid is small. If the opening hole 9 has a diameter of 0.8 mm and the number of holes is 2 to 4, it is not appropriate because bubbles will overflow outside the container body 1. (When the height of the bubbles is 30 mm to 35 mm.) When the diameter of the opening hole 9 is 0.3 mm, the smaller the number of holes, the smaller the amount of bubbles generated. This is thought to be because the flow rate of beer and air ejected from the opening holes 9 of the foam generator 2 is small, and therefore, when the number of holes is small, stirring in the beer liquid becomes insufficient. From the experimental results, fine creamy foam was obtained when the pore diameter was 0.5 mm and the number of pores was 2 to 4. Furthermore, as shown in the embodiment shown in FIG. has been done. Of course, as another embodiment, the foam generator 2 may have a bottom surface. Further, in the embodiment shown in FIG. 2, the bottom portion 13 is similarly formed to be hollow, and is attached to the bottom surface 1a of the container body 1 by means of mounting legs 11 formed at the lower end of the outer wall 5. That is, the mounting leg 11 is elastically engaged with the engaging portion 12 formed in the container body 1 from below, and the bottom surface 1 of the container body 1 is
It is fixed at a. A rubber-like gasket 1 is attached to the tip of the mounting leg 11 that is engaged with the engaging portion 12.
1a is attached to maintain airtightness between the inner wall surface of the container body 1 and the bubble generator 2. The foam generator 2 is fixed to the bottom surface 1a before the lid 1b is wrapped around the container body 1, and is made of synthetic resin, wood, metal, or the like. In the embodiment shown in FIG.
c is provided to form a raised bottom surface 1d. By press-fitting the mounting legs 11 of the bottom portion 13 into the outer periphery of the bottom surface 1d, the embodiment shown in FIG.
e, and a bottom portion 1 is formed on this protrusion 1e.
The foam generator 2 is fixed within the container main body 1 by elastically engaging the mounting legs 11 of 3. Effects As explained above, with this invention, there is no need to pour the beer into a jar or pop, or to perform any special operations to generate foam, as was the case with conventional methods. It can generate creamy bubbles of gas and can provide a milder beer. In particular, this device has a structure in which the bubble generator is provided with a recess, so that the generated bubbles spread throughout the container body and remain constant within the bubble generator even if the container is tilted at any angle during transportation. Since the air of
Bubbles are definitely generated when the package is opened.

[Brief explanation of the drawing]

1 to 8, 12 and 13 show an embodiment of a beer container or a foam generator incorporating a foam generator according to this invention. A cross-sectional view of a cylindrical foam generator fixed in place, Figure 2 is a cross-sectional view of a truncated conical foam generator fixed inside the container body, and Figure 3 is a plan view of the cylindrical foam generator. Figure 4 is A-A of Figure 3.
Figure 5 is a cross-sectional view showing bubbles being generated from the foam generator when the can is opened, Figure 6 is a cross-sectional view when the container body is turned sideways, and Figure 7 is a cross-sectional view when the container body is turned upside down. Figure 8 is a cross-sectional view showing a method for measuring the height of bubbles generated, Figures 9 to 11
The figures show an example of a beer container incorporating a conventional foam generating device.
The figure is a bottom view, 11 is an enlarged sectional view when the foam generator is being flicked with a finger, and FIGS. 12 and 13 are other embodiments of the beer container or foam generator incorporating the foam generator according to this invention. It is a sectional view showing an example. DESCRIPTION OF SYMBOLS 1... Container body, 1a... Bottom surface, 2... Foam generator, 3... Top surface, 4... Recess, 5... Outer wall, 6...
...Inner wall, 7...Air storage section, 8...Bottom surface, 9...
Opening hole, 10... Flange, 11... Mounting leg, 13...
…bottom.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A beer container having a foam generating device built into the container body, the foam generating device having a cylindrical, prismatic, truncated conical shape, or a truncated conical shape. By forming a pyramid shape and recessing the top surface of the foam generator downward to form a recess inside, air is introduced into the gap surrounded by the top surface of the foam generator, the outer wall, and the inner wall of the recess. 1. A beer container incorporating a foam generator, characterized in that a reservoir is formed and a plurality of openings are bored in the bottom of the recess. (2) The foam generator is registered as a utility model, characterized in that the bottom is hollow and is fixed to the bottom of the container body via a flange or mounting legs provided at the bottom of the foam generator. A beer container incorporating the foam generator according to claim 1.