JP2020153524A - Cold storage tool - Google Patents

Abstract

To manage beverages in a storage container to an appropriate temperature.SOLUTION: A cold storage tool 1 controls the temperature of the beverage in a bottle 5. The cold storage tool 1 comprises: a heat exchange unit that is filled with a heat storage material whose phase changes at a predetermined temperature, and is configured such that the heat storage material exchanges heat with the beverage; and a packaging unit 3 surrounding the bottle 5 and the heat exchange unit. The melting point of the heat storage material is 5°C or lower and higher than or equal to the freezing temperature of the beverage. Also, the packaging unit 3 comprises a side surface part formed into a cylindrical shape, and a bottom surface part that is connected to one end of the side surface part to form a closed surface, wherein a diameter D1 of the side surface part on the closed surface side is larger than a diameter D2 of the side surface part on an open end side.SELECTED DRAWING: Figure 1A

Description

The present invention relates to a cold storage device that controls the temperature of a beverage in a storage container.

Conventionally, heat insulating materials, particularly alcohols such as wine, beer, and sake, beverages such as juice and water, foods, and pharmaceuticals have storage temperatures suitable for each, and heat insulating materials are used. There is a need for a cold insulation tool that can reach a desired storage temperature more quickly and can be maintained at a desired temperature for a long time. For example, for wines and the like that require a drinking temperature, a wine cooler filled with ice water is used to cool the wine bottle.

Furthermore, in recent years, a new way of drinking sake (alcoholic beverage), which has been drunk as hot sake, room temperature, and cold sake, has been proposed to drink at a temperature below the refrigeration temperature (5 ° C) and not frozen so that the flavor does not change. Has been done.

Patent Document 1 and Patent Document 2 disclose a technique for maintaining wine at an appropriate temperature (temperature range of 5 to 12 ° C.).

Japanese Patent No. 4406683 Japanese Unexamined Patent Publication No. 2003-20173

For example, when cooling alcoholic beverages such as sake, the temperature of alcoholic beverages can be lowered to 5 ° C or less by using a "freezer" instead of the "refrigerator" of a general household refrigerator, but depending on the alcohol content. May freeze alcoholic beverages. For example, it has been confirmed that sake with an alcohol content of 15% freezes at -18 ° C. Therefore, when cooling the beverage, it is necessary to control the temperature so that the freezing temperature is not reached.

Further, the wine cooler disclosed in Patent Document 1 and the cold insulation heat insulating device disclosed in Patent Document 2 are intended to keep cold at 5 ° C. or higher, and are used for beverages taken out from a refrigerator (5 ° C.). The temperature cannot be lowered further. In addition, it does not have a structure for tightening a cold insulation object to enhance the cold insulation effect.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cold insulation tool capable of controlling a beverage in a storage container to an appropriate temperature.

In order to achieve the above object, the present invention has taken the following measures. That is, the cold insulation tool of the present invention is a cold insulation tool that controls the temperature of the beverage in the storage container, and is filled with a heat storage material that changes phase at a predetermined temperature, and the heat storage material exchanges heat with the beverage. A heat exchange unit configured to perform the heat exchange unit, a storage container, and a packaging unit surrounding the heat exchange unit are provided, and the melting point of the heat storage material is 5 ° C. or lower and higher than the freezing temperature of the beverage. ..

According to the present invention, it is possible to sufficiently cool the beverage without freezing it.

It is a figure which shows the outline of the cold insulation tool which concerns on this embodiment. It is a figure which developed the side surface part of the cold insulation tool which concerns on this embodiment. It is a top view which shows the outline of the heat exchange part of the cold insulation tool which concerns on this embodiment. It is a side view which shows the outline of the heat exchange part of the cold insulation tool which concerns on this embodiment. It is a figure which shows the outline of the cold insulation object used in each Example and comparative example. It is a graph which shows the freezing temperature confirmation experiment result of sake. It is a figure which plotted the formula (1) about sodium chloride as an example of a water-soluble inorganic salt. It is a figure which shows the temperature change of the storage container in Example 1. FIG. It is a figure which shows the temperature change rate of each storage container in Example 2 and Comparative Example 1. It is a figure which summarized the temperature change rate of each storage container in Example 2 and Comparative Example 1. It is a figure which shows the temperature change rate of each storage container in Example 1 and Example 2. FIG. It is a figure which summarized the temperature change rate of each storage container in Example 1 and Example 2. It is a figure which shows the temperature change rate of each storage container in Example 1 and Comparative Example 2. It is a figure which summarized the temperature change rate of each storage container in Example 1 and Comparative Example 2. It is a figure which summarized the temperature change rate of each storage container in Example 2 and Comparative Example 2.

The present inventors have focused on the fact that temperature control according to a beverage is necessary in order to avoid the inconvenience caused by overcooling and freezing in a situation where the need for chilling and drinking sake is increasing. However, they have found that appropriate temperature control can be achieved by using a heat storage material having a melting point of 5 ° C. or lower and a freezing temperature of a beverage or higher, and have reached the present invention.

That is, the cold insulation tool of the present invention is a cold insulation tool that controls the temperature of the beverage in the storage container, and is filled with a heat storage material that changes phase at a predetermined temperature, and the heat storage material exchanges heat with the beverage. A heat exchange unit configured to perform the heat exchange unit, a storage container, and a packaging unit surrounding the heat exchange unit are provided, and the melting point of the heat storage material is 5 ° C. or lower and higher than the freezing temperature of the beverage. ..

This made it possible for the present inventors to sufficiently cool the beverage without freezing it. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[Composition of cold storage equipment]
FIG. 1A is a diagram showing an outline of a cold insulation tool according to the present embodiment. FIG. 1B is a developed view of a side surface portion of the cold insulation tool according to the present embodiment. The bottom surface of the heat exchange section and the cold insulation tool as the closing surface is not shown, but the heat exchange section will be described later, and the bottom surface is formed of the same material as the packaging material in a substantially circular shape. As shown in FIGS. 1A and 1B, the cold insulation tool 1 according to the present embodiment is formed into a cylindrical shape by winding a packaging material 3 having a specific two-dimensional shape so as to overlap 3a and 3b. This is the side surface of the cold insulation tool 1. Further, the open end of the cold insulation tool 1 has a shape obtained by cutting a cylinder diagonally, and by storing the bottle 5 as a storage container, it seems that the bottle 5 is worn by matching the front body of the kimono. Appearance can be formed. The fixing belt 7 fixes the neck portion of the bottle 5, stabilizes the position of the bottle 5 inside the cold insulation tool 1, and prevents the bottle 5 from coming off from the cold insulation tool 1 when pouring a beverage or the like.

As shown in FIG. 1A, the diameter D1 on the bottom surface side of the side surface portion formed by the packaging material 3 is larger than the diameter D2 on the open end side of the side surface portion. This is because, as shown in FIG. 1B, the developed view of the packaging material 3 has a two-dimensional specific shape, and in the developed view, the bottom portion that is lower than the paper surface is not a straight line. This is realized because it is formed so as to have an angle of 178 degrees about the point P. As described above, since the cold insulation tool 1 has a so-called "taper", it is possible to prevent the open end portion of the cold insulation tool 1 from opening when the bottle 5 is stored.

Further, the cold insulation tool 1 is provided with a fastener 9 for locking the overlapping packaging materials 3a and 3b to each other at a portion where the packaging materials 3 overlap. By locking the packaging materials 3a and 3b with the fastener 9, the heat exchange portion 20 described later can be brought into close contact with the bottle 5 to enhance the cooling effect. This point will be described later. The packaging material 3 constitutes a side surface portion of the cold insulation tool 1, and a side surface portion and a bottom surface portion (not shown) constitute a packaging portion. By forming the packaging material 3 with an elastic material, it is possible to maintain the adhesion to the bottle 5 even when the heat storage material melts and the volume of the heat storage material shrinks.

FIG. 2A is a top view showing an outline of a heat exchange portion of the cold insulation tool according to the present embodiment. FIG. 2B is a side view showing an outline of a heat exchange portion of the cold insulation tool according to the present embodiment. As shown in FIG. 2A, the heat exchange section 20 includes six heat storage material storage sections 20a for storing the heat storage material 22, and five connecting sections 20b for connecting the heat storage material storage sections 20a. By adopting a structure having a plurality of heat storage material storage portions 20a in this way, after the heat storage material 22 is frozen, the heat storage material 22 is surrounded by the packaging material 3 so as to be in close contact with the bottle 5, so that the bottle 5 can be used as a storage container. Contact is improved. As the number of the heat storage material storage portions 20a and the connecting portions 20b constituting the heat exchange portion 20 increases, the appearance when attached to the bottle 5 becomes slimmer. Although the six heat storage material storage portions 20a and the five connecting portions 20b are shown here, the number is not limited to these.

Further, the heat storage material storage portion 20a has a curved surface portion 20c at a portion in contact with the bottle 5. The curved surface portion 20c is formed in a concave shape having a radius of curvature of 37 mm. This makes it possible to improve the adhesion to the bottle 5. As a result, the heat absorption from the bottle 5 is improved, and the temperature can be easily lowered. Further, by reducing the surface area of the bottle 5 that comes into contact with the outside air, the temperature rise of the beverage in the bottle 5 is suppressed. Furthermore, extra protrusions are eliminated, and it is possible to reduce the overall rugged state and achieve slimming. In the present embodiment, the radius of curvature is 37 mm, but the present invention is not limited to this. The range of the radius of curvature is preferably 26.5 mm to 46.00 mm, but even if it is a curvature size such as a leoboworm size having a capacity 6 times the normal size (750 ml) of a bottle of sake or champagne. good. The rigidity of the curved surface portion 20c may be higher than the rigidity of the other portions. As a result, it is possible to prevent the curved surface portion 20c from being deformed due to the volume expansion generated when the heat storage material is frozen. Further, each heat storage material storage unit 20a of the heat exchange unit 20 may be filled with a dyeing liquid. As a result, even if the heat storage material leaks, it can be recognized at a glance.

[Verification]
Next, in order to verify the effect of the cold insulation tool according to this embodiment, an experiment was conducted under the following conditions. FIG. 3 is a diagram showing an outline of a cold insulation target used in each Example and Comparative Example. As the object to be cooled, the bottle 5 is filled with sake (alcohol content 15 degrees, 720 ml) as the liquid to be cooled. As the liquid to be cooled (sake), a liquid that had been previously cooled in a refrigerator (5 ° C.) was used. The ambient temperature is 23 ° C. The following is a table summarizing the configurations of the cold insulation tools of each Example and Comparative Example.

The filling height when the liquid to be cooled is filled in the storage container is 200 mm from the bottom of the storage container. The temperature measurement points in each of the Examples and Comparative Examples were (I) liquid center: 100 mm from the bottom and (II) liquid top: 180 mm from the bottom.

[Freezing temperature confirmation experiment]
First, an experiment was conducted to confirm the freezing temperature of the liquid (sake) to be kept cold used in this embodiment. A storage container filled with sake (720 ml) was allowed to stand in the refrigerator, the temperature inside the refrigerator was lowered by 1 ° C. every 5 hours, and an experiment was conducted to determine when the temperature inside the refrigerator would freeze. FIG. 4 is a graph showing the results of an experiment for confirming the freezing temperature of sake. As a result of the experiment, as shown in FIG. 4, it was found that sake (alcohol content 15 ° C.) freezes when the internal temperature is -18 ° C. From this result, the sake used in this experiment may be frozen in the freezer (-18 ° C). Therefore, it is necessary to use a latent heat storage material (heat storage material) having a melting point of 5 ° C. or lower and higher than -18 ° C.

なお、ここで、Ｔを融点とし、ｗを前記水溶性無機塩の重量パーセント濃度とし、Ｍを前記水溶性無機塩の分子量とし、Ｒを気体定数とし、Ｔｆを水の融点とし、ΔＨを水の潜熱とし、ｎを１つの水溶性無機塩が水溶液中で電離する数とする。さらに、前記ｗは、水と前記水溶性無機塩との共晶を与える濃度未満である。 [Latent heat storage material]
Here, the latent heat storage material used in the present embodiment will be described. As described above, the latent heat storage material used in the present embodiment is preferably a latent heat storage material having a melting point of 5 ° C. or lower and higher than -18 ° C. Further, the melting point of the latent heat storage material is more preferably less than 0 ° C. The latent heat storage material having a temperature of less than 0 ° C. is preferably an aqueous solution of an inorganic salt, and more preferably, the concentration of the aqueous inorganic salt solution and the melting point satisfy the relationship of the formula (1).

Here, T is the melting point, w is the weight percent concentration of the water-soluble inorganic salt, M is the molecular weight of the water-soluble inorganic salt, R is the gas constant, Tf is the melting point of water, and ΔH is water. Let n be the number at which one water-soluble inorganic salt is ionized in an aqueous solution. Further, w is less than a concentration that gives eutectic of water and the water-soluble inorganic salt.

Thereby, a latent heat storage material having a desired melting point can be easily designed only by changing the concentration of the water-soluble inorganic salt. Further, the formula (1) consists of a dilute aqueous solution having a concentration of less than w that gives eutectic with the water-soluble inorganic salt. Eutectic is obtained near the concentration at which w gives eutectic with the water-soluble inorganic salt. In the eutectic state, it exhibits a single melting point and a high latent heat. Therefore, the cold insulation temperature tends to be constant, and it is possible to keep the cold insulation for a long time.

Further, as the inorganic salt, sodium chloride, potassium chloride, calcium chloride, magnesium chloride, barium chloride, ammonium chloride, potassium hydrogen carbonate, sodium carbonate, sodium nitrate, potassium nitrate, calcium nitrate and magnesium nitrate are preferable. Further, the concentration of the inorganic salt is preferably equal to or less than the concentration that gives eutectic crystals between each inorganic salt and water. When an amount exceeding the concentration that gives eutectic is added, the temperature does not fall below the melting point at the concentration that gives eutectic, and the latent heat per weight decreases because the inorganic salt is excessively precipitated.

FIG. 5 is another diagram in which the formula (1) is plotted for sodium chloride as an example of a water-soluble inorganic salt. The concentration at which water and sodium chloride give eutectic is 23.3 wt%, and FIG. 5 is a plot of regions below the concentration at which eutectic is given. When the temperature at which the liquid to be kept cold should be kept cold is determined, it is required to set the melting point of the latent heat storage material with high accuracy. However, if FIG. 5 is used, the concentration of the inorganic salt can be calculated and the latent heat can be easily calculated. It is possible to determine the composition ratio and material of the heat storage material. The melting point of the eutectic of water and sodium chloride is -21 ° C, but even if it is above the melting point of the eutectic, latent heat storage at the desired melting point can be achieved by adjusting the concentration of the inorganic salt using the formula (1). The material can be obtained. Further, near the eutectic concentration of water and the inorganic salt, a eutectic having a single melting point can be obtained. The inorganic salt constituting the latent heat storage material may be only one type among the above-mentioned inorganic salts, or may be a mixture of a plurality of inorganic salts. By using a latent heat storage material having a melting point of less than 0 ° C., cooling below the freezing point, which cannot be achieved with ice, becomes possible.

Next, using the latent heat storage material having the above melting point, the difference in performance depending on the configuration of the cold insulation tool was verified.

[1. Cooling performance / Example 1]
(Example 1)
-Packaging material: There is a taper and there are 9 fasteners.
-The temperature was measured for 120 minutes after the heat exchange section 20 and the packaging material 3 were attached to the storage container (bottle 5).
The temperature measurement points were the center of the liquid and the outside of the heat exchange section 20 (between the packaging material and the container).

FIG. 6 is a diagram showing a temperature change of the storage container in Example 1. As shown in FIG. 6, the temperature of the center of the liquid kept cold in the refrigerator (5 ° C.) is cooled to below freezing in about 23 minutes. It was found that the cold insulation tool of Example 1 had a cooling performance to bring the temperature below freezing within 30 minutes. Further, it was found that the temperature of the central part of the liquid was cooled toward the temperature of the heat exchange part (cold storage material), but was not frozen even 2 hours after the start of cooling.

[2. Effect of presence / absence of taper / Comparison between Example 2 and Comparative Example 1]
Next, the effect of the presence or absence of taper was verified using Example 2 and Comparative Example 1. As a comparison method, a comparison was performed using normalized values using the temperature change calculated by the following equation (2). This is because the temperature when taken out from the refrigerator is different.

Temperature change rate = (liquid temperature at the time of measurement-initial liquid temperature) / initial liquid temperature ... (2)
Here, a temperature change rate of 0 or more means a temperature rise, and a temperature change rate of less than 0 means a temperature decrease.

(Example 2)
-Packaging material: with taper and without fastener 9.
-After attaching the heat exchange unit 20 and the packaging material 3 to the storage container (bottle 5), the temperature was measured for 30 minutes.
The temperature measurement points were the central part of the liquid and the upper part of the liquid.
(Comparative Example 1)
-Packaging material: No taper, no fastener 9.
-After attaching the heat exchange unit 20 and the packaging material 3 to the storage container (bottle 5), the temperature was measured for 30 minutes.
The temperature measurement points were the central part of the liquid and the upper part of the liquid.

FIG. 7A is a diagram showing the temperature change rate of each storage container in Example 2 and Comparative Example 1. FIG. 7B is a diagram summarizing the temperature change rate of each storage container in Example 2 and Comparative Example 1. Regarding the temperature change ratio after 30 minutes, there was almost no difference in the "liquid center". That is, Comparative Example 1 was only 3% lower, which means that the temperature decrease rate was 3% higher, which means that it was cooled. On the other hand, for the "upper part of the liquid", the temperature change rate of Comparative Example 1 was 22% higher than that of Example 2. That is, it can be said that the temperature rise rate of the upper part of the liquid is 22% higher and the temperature rises easily.

As a result of the above, by providing the taper, a cooling effect can be obtained in the central part of the liquid, an effect of suppressing the temperature rise can be obtained in the upper part of the liquid, and in particular, the temperature rise rate of the upper part of the liquid can be suppressed. It turned out to be.

[3. Effect of presence / absence of fastener / Comparison of Example 1 and Example 2]
Next, the effect of the presence or absence of the fastener 9 was verified using Example 1 and Example 2. The comparison method was the same as the method for comparing the effects of the presence or absence of taper.

(Example 1)
-Packaging material: Tapered and fasteners (magic tape (registered trademark)).
-After attaching the heat exchange unit 20 and the packaging material 3 to the storage container (bottle 5), the temperature was measured for 30 minutes.
The temperature measurement points were the central part of the liquid and the upper part of the liquid.
(Example 2)
-Packaging material: Tapered, without fasteners-The temperature was measured for 30 minutes after the heat exchange section 20 and the packaging material 3 were attached to the storage container (bottle 5).
The temperature measurement points were the central part of the liquid and the upper part of the liquid.

FIG. 8A is a diagram showing the temperature change rate of each storage container in Example 1 and Example 2. FIG. 8B is a diagram summarizing the temperature change rate of each storage container in Example 1 and Example 2. As shown in FIG. 8B, the temperature change rate of Example 1 is 8% lower than that of Example 2 in the “upper part of the liquid” and 28% lower than that of Example 2 in the “center part of the liquid”. .. That is, it was found that by providing the fastener 9, it is possible to reduce the temperature rise rate in both the upper part of the liquid and the central part of the liquid, and in particular, it is possible to reduce the temperature rise in the central part of the liquid. In the present embodiment, the velcro (registered trademark) is used as the fastener 9, but anything is acceptable as long as the overlapping portion of the packaging material 3 can be locked, and the present invention is not limited to this.

[4. Effect of coverage / Comparison of Example 1, Example 2 and Comparative Example 2]
Next, the effect of the coverage was verified using Example 1, Example 2, and Comparative Example 2. That is, a comparison was made according to how much the heat exchange unit 20 covers the filling height of the beverage in the bottle 5. Other configurations other than the coverage, temperature measurement location, and temperature measurement time are the same as in each of the above verifications.

(Example 1, Example 2)
Coverage: 87.0%
Other configurations, temperature measurement points, and temperature measurement times are the same as described above.

(Comparative Example 2)
Coverage: 79.5%
Other configurations, temperature measurement points, and temperature measurement times are the same as described above.

FIG. 9A is a diagram showing the temperature change rate of each storage container in Example 1 and Comparative Example 2. FIG. 9B is a diagram summarizing the temperature change rate of each storage container in Example 1 and Comparative Example 2. As shown in FIG. 9B, the temperature change rate of the “liquid center” is 14% higher in Comparative Example 2. Further, the temperature change rate of the “upper part of the liquid” is also 5% higher in Comparative Example 2. That is, it was found that the cooling performance is improved by increasing the coverage.

FIG. 9C is a diagram summarizing the temperature change rate of each storage container in Example 2 and Comparative Example 2. As shown in FIG. 9C, when the temperature change rates after 30 minutes were compared in Example 2 and Comparative Example 2, it was found that Comparative Example 2 had higher cooling performance than Example 2. Therefore, it was found that the cooling performance can be improved if the coverage is at least 79.5% or more.

It is desirable that the heat storage material 22 has a thickening property in order to improve the operability at the time of filling in the manufacturing process of the heat exchange unit 20. In this case, it can be realized by mixing a thickener into the heat storage material 22.

Further, the storage container such as the bottle 5 filled with the liquid to be cooled may have a temperature display function at least in part. For this temperature display function, for example, the temperature indicating material may be applied (printed) to a storage container such as a bottle 5, or the storage container itself may be made of a material containing the temperature indicating material. This makes it possible to grasp the temperature of the liquid to be cooled. Further, it is preferable that the temperature indicating material is discolored or decolorized at 6 ° C. (or refrigerating temperature). This is based on the assumption that the beverage that has been kept cold in the refrigerating room will be further cooled, and by knowing whether or not the storage container has reached the refrigerating temperature range, the timing of installing the cold storage device can be known, and the user can know the cold storage device. This is because it is possible to know the appropriate timing for demonstrating the original performance of.

The present invention can also take the following aspects.

(A) The cold storage tool according to one embodiment of the present invention is a cold storage tool that controls the temperature of a beverage in a storage container, and is filled with a heat storage material that changes phase at a predetermined temperature, and the heat storage material is the said. A heat exchange unit configured to exchange heat with a beverage, a storage container, and a packaging unit surrounding the heat exchange unit are provided, and the heat storage material has a melting point of 5 ° C. or lower and the beverage has a melting point of 5 ° C. or lower. It is above the freezing temperature.

(B) Further, in the cold insulation tool according to one embodiment of the present invention, the packaging portion includes a side surface portion formed in a cylindrical shape and a bottom surface portion that is combined with one end of the side surface portion to form a closed surface. The diameter of the side surface portion on the closed surface side is larger than the diameter of the side surface portion on the opening end side.

(C) Further, in the cold insulation tool according to one embodiment of the present invention, the side surface portion is formed into a cylindrical shape by being wound so as to partially overlap packaging materials having a specific two-dimensional shape. There is.

(D) Further, the cold insulation tool according to one embodiment of the present invention is provided at a portion where the packaging materials overlap, and further includes a fastener for locking the packaging materials to each other.

(E) Further, in the cold insulation tool according to one embodiment of the present invention, the heat exchange unit includes a plurality of heat storage material storage units for storing the heat storage material and a connecting portion for connecting the heat storage material storage units. Provided and contacted along the surface of the storage container.

(F) Further, in the cold insulation tool according to one embodiment of the present invention, each of the heat storage material storage portions has a curved surface portion that comes into contact with the storage container and conforms to the surface of the storage container.

(G) Further, in the cold insulation tool according to one embodiment of the present invention, the heat exchange section covers 79.5% or more of the filling height of the beverage in the storage container.

(H) Further, in the cold insulation tool according to one embodiment of the present invention, the melting point of the heat storage material is less than 0 ° C.

(I) Further, in the cold insulation tool according to one embodiment of the present invention, the heat storage material contains water and a water-soluble inorganic salt, has a melting point of T, and has a weight percent concentration of the water-soluble inorganic salt as w. The molecular weight of the sex inorganic salt is M, the gas constant is R, the melting point of water is Tf, ΔH is the latent heat of water, the number of ionizing one water-soluble inorganic salt in an aqueous solution is n, and w is water. When the concentration is less than the concentration that gives eutectic with the water-soluble inorganic salt, the following equation is satisfied.

(J) Further, the heat storage material contains water and a water-soluble inorganic salt, and the weight percent concentration of the water-soluble inorganic salt is a concentration that gives eutectic crystals of water and the water-soluble inorganic salt.

(K) Further, in the cold insulation tool according to one embodiment of the present invention, the packaging material is formed of an elastic material.

(L) Further, in the cold insulation tool according to one embodiment of the present invention, the rigidity of the curved surface portion is higher than the rigidity of the portion other than the curved surface portion.

(M) Further, in the cold insulation tool according to one embodiment of the present invention, the heat exchange portion is filled with a dyeing solution.

As described above, according to the present embodiment, it is possible to sufficiently cool the beverage without freezing it.

1 Cold insulation tool 3, 3a, 3b Packaging material 5 Bottle 7 Fixing belt 9 Fastener 20 Heat exchange part 20a Heat storage material storage part 20b Connecting part 20c Curved surface part 22 Heat storage material

Claims (13)

A cold storage device that controls the temperature of beverages in a storage container.
A heat exchange unit filled with a heat storage material that changes its phase at a predetermined temperature so that the heat storage material exchanges heat with the beverage.
The storage container and the packaging part surrounding the heat exchange part are provided.
A cold insulation tool having a melting point of 5 ° C. or lower and a freezing temperature or higher of the beverage. The packaging portion includes a side portion formed in a cylindrical shape and a side portion.
A bottom surface portion that is coupled to one end of the side surface portion to form a closed surface is provided.
The cold insulation tool according to claim 1, wherein the diameter of the side surface portion on the closed surface side is larger than the diameter on the opening end side of the side surface portion. The cold insulation tool according to claim 2, wherein the side surface portion is formed into a cylindrical shape by being wound so as to partially overlap packaging materials having a specific two-dimensional shape. The cold insulation tool according to claim 3, further comprising a fastener that is provided at a portion where the packaging materials overlap and that locks the packaging materials to each other. The heat exchange unit
A plurality of heat storage material storage units for storing the heat storage material, and
A connecting portion for connecting each of the heat storage material storage portions is provided.
The cold insulation tool according to any one of claims 1 to 4, which comes into contact with the surface of the storage container. The cold storage tool according to claim 5, wherein each of the heat storage material storage portions has a curved surface portion that comes into contact with the storage container and conforms to the surface of the storage container. The cold storage tool according to any one of claims 1 to 6, wherein the heat exchange unit covers 79.5% or more of the filling height of the beverage in the storage container. The cold storage tool according to any one of claims 1 to 7, wherein the melting point of the heat storage material is less than 0 ° C. The heat storage material contains water and a water-soluble inorganic salt, and contains water.
Let T be the melting point
Let w be the weight percent concentration of the water-soluble inorganic salt.
Let M be the molecular weight of the water-soluble inorganic salt.
Let R be the gas constant
Let Tf be the melting point of water
Let ΔH be the latent heat of water
Let n be the number of one water-soluble inorganic salt ionized in the aqueous solution.
The cold insulation tool according to any one of claims 1 to 8, which satisfies the following formula, assuming that w is less than a concentration that gives eutectic of water and the water-soluble inorganic salt.

The heat storage material contains water and a water-soluble inorganic salt, and contains water.
The cold insulation tool according to any one of claims 1 to 8, wherein the weight percent concentration of the water-soluble inorganic salt is a concentration that gives eutectic crystals of water and the water-soluble inorganic salt. The cold insulation tool according to claim 3 or 4, wherein the packaging material is made of an elastic material. The cold insulation tool according to claim 6, wherein the curved surface portion has a rigidity higher than that of a portion other than the curved surface portion. The cold insulation tool according to any one of claims 1 to 12, wherein the heat exchange unit is filled with a dyeing solution.

Images