JPH0349569Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to a cold storage container in which a liquid refrigerant is sealed between double walls.

(Prior art and its problems) As is well-known, a heat-insulating container was developed in 1972, in which a bowl or cup with an open top has a double-wall structure, and the space between the double walls is vacuumed and insulated. No. 131163 was devised, and a heat insulating container in which a liquid or solid heat medium was sealed in the space between the double walls was devised as Utility Model Application No. 106477/1983. However, in order to create a vacuum in the space between the double walls or to seal in a heat medium inside the space, holes must be provided in the outer wall for venting air or for injecting the heat medium, as in Japanese Utility Model Application No. 1980-19080. Moreover, there was a drawback that the through holes had to be closed in a vacuum state or filled with a heating medium.
In particular, vacuum equipment is expensive and requires a high level of skill to operate, and in the case of containers containing liquid refrigerant, the volume increases as the liquid solidifies. However, there was a problem with the liquid pulsating and making the container unstable.

[Structure of the idea]

(Means for solving the problem) In a container with a double wall structure, a partition plate is provided at the bottom of the space between the double walls to divide the space into an upper space and a lower space. The refrigerant is divided into chambers, the upper chamber is filled with a liquid refrigerant that solidifies at cold temperatures, and the partition plate can be deformed toward the lower chamber as the refrigerant solidifies.

(Function) The refrigerant sealed in the upper cavity is sealed without any gaps to prevent pulsation, and the volume increase due to solidification of the refrigerant is absorbed by the deformation of the partition plate, and the deformed partition plate is restored by melting the refrigerant. do.

(Example) Hereinafter, the structure of the cold storage container of the present invention will be explained with reference to drawings of examples. Reference numeral 1 denotes a container body that opens upward, and a peripheral wall 3 that is continuous with an opening 2 of the main body 1 is connected to a bottomed inner wall 4. It is formed into a double wall structure by a cylindrical outer wall 5, and the outer wall 5 extends further downward than the inner wall bottom 4a, and a void 9 is continuously formed between the inner wall 4 and the outer wall 5 to the outer wall extension 5a. . Reference numeral 7 denotes a partition plate provided at the lower part of the empty chamber 9 of the container body 1. The partition plate 7 is attached to the inner periphery of the lower part of the outer wall 5 forming the empty chamber 9, and the partition plate 7
It is divided into upper and lower parts, and is made of rubber or synthetic resin with high elasticity and elasticity so that it can be deformed and restored in the downward direction. They are formed in concentric circles. A bottom cover 6 is attached to the lower end of the container body 1, and the bottom cover 6 is fitted or screwed into the outer wall extension 5a to close the empty space 9. Reference numeral 10 denotes a refrigerant sealed in the upper cavity 9a divided by the partition plate 7;
As the liquid water, alcohol, etc., which solidify at cold temperatures, are harmless, chemically stable, and inexpensively available, are used. Reference numeral 8 denotes a refrigerant inlet provided in the partition plate 7, and the inlet 8 is closed with a stopper 18 after the refrigerant 10 is sealed in the upper cavity 9a. Reference numeral 16 denotes a ventilation hole bored in the bottom lid 6, which allows the partition plate 7 and the bottom lid 6 to be separated from each other by the ventilation hole 16.
The lower cavity 9b created during this period communicates with the outside air.

Since the cold storage container of the present invention has the above-mentioned structure, the container body 1, the bottom cover 6, and the partition plate 7 are formed separately in advance, and the container body 1 is first turned upside down to create a vacant space that opens downward. After inserting the partition plate 7 into the lower part of the empty chamber 9 and dividing the empty chamber 9 into upper and lower parts by fixing the partition plate 7 to the outer wall 5 with the partition plate 9 facing upward, the inlet 8 of the partition plate 7 is inserted.
Fill the upper cavity 9a with the refrigerant 10 without any gaps, close the injection port 8 with the stopper 18, and then fit the bottom cover 6 to the outer wall extension 5a, or first turn the container body 1 upside down. After filling the empty chamber 9 with the refrigerant 10 to the outer wall extension 5a, insert the partition plate 7 into the empty chamber 9, and fix the partition plate 7 airtightly at the point where it touches the refrigerant 10. The bottom cover 6 is fitted onto the portion 5a.

The cold storage container of the present invention is placed in a freezer to solidify the refrigerant 10 sealed in the empty chamber 9, and the container is kept cool at room temperature by the solidified refrigerant 11. Although the volume of the refrigerant 10 increases due to solidification, the partition plate 7 forming the upper cavity 9a becomes deformable, so the partition plate 7 deforms toward the lower cavity 9b by the increased volume.
Absorb the increased volume. Specifically, the partition plate 7 and its wavy portion 17 bulge and deform in the direction of the lower chamber 9b in accordance with the volume that increases as the refrigerant 10 solidifies. On the other hand, after solidification of the refrigerant 10 sealed in the empty chamber 9,
When the container is used at room temperature, the container is cooled until the solidified refrigerant 11 is completely melted, and as the solidified refrigerant 11 melts, the deformed partition plate 7 is restored.

Note that the cold storage container of the present invention is not limited to the above-mentioned embodiment, but may include, for example, a female screw 25 provided on the extension portion 5a of the main body outer wall 5, a male screw 26 provided on the outer periphery of the bottom cover 6,
The bottom cover 6 can be attached by screwing, or it can be attached to the outer wall 5 using an adhesive like the partition plate 7, or it can be fused to the outer wall 5 using ultrasonic waves. Also, when the partition plate 7 is attached to the bottom cover 6 or the bottom cover 6 and the partition plate 7 are integrally molded, and the bottom cover 6 with the partition plate 7 is fitted into the lower part of the empty chamber 9 of the main body 1, the partition plate 7 The same purpose can be achieved even if empty chambers 9a and 9b are formed at the top and bottom, and in the case of the cold storage container according to the present invention in which the amount of refrigerant 10 enclosed is small, the corrugated portion 17 of the partition plate 7
It is also possible to omit one or both of the injection port 8 and the injection port 8. Further, the shape and structure of the container body 1, the partition plate 7 and the bottom cover 6 provided at the lower part thereof, the procedure for filling the refrigerant 10 into the upper cavity 9a, etc. can be changed as appropriate as long as they do not go against the gist of the present invention.

[Effect of idea]

Therefore, the cold storage container of the present invention has a double-walled structure, and a partition plate is provided at the bottom of the empty space to divide the empty space into upper and lower parts, and a liquid refrigerant is filled in the upper empty space. When the volume increases due to solidification of the refrigerant, the container deforms by the amount of increase in volume, so the refrigerant to be introduced into the upper cavity can be sealed without any gaps, preventing pulsation of the refrigerant and making the container stable. Furthermore, even if the refrigerant is placed in a freezer to solidify the refrigerant, the increased volume due to solidification is absorbed by the deformation of the partition plate, so the container will not be damaged. Furthermore, since the proposed cold storage container can use chemically stable water as the refrigerant, it is easy to fill the refrigerant and can be provided at low cost. When food and drink are placed inside the container, the food and drink can be kept cold until the solidified refrigerant completely melts and becomes liquid, making it ideal as a container for cold beer, ice cream, etc. .

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the proposed cold insulating container, Fig. 2 is a diagram of its usage state, Fig. 3 is a longitudinal sectional view of a similar cold insulating container, and Figs. 4 and 5 A and B show examples of refrigerant filling. A vertical cross-sectional view of the lower part of the main body, and FIGS. 6 to 9 are vertical cross-sectional views of the bottom cover showing examples of forming the partition plate. 1... Container body, 2... Mouth, 3... Peripheral wall, 4
...Inner wall, 5...Outer wall, 5a...Outer wall extension, 6
... Bottom cover, 16 ... Ventilation hole, 7 ... Partition plate, 17
...Wavied portion, 8...Inlet, 9, 9a, 9b...
Vacant room, 10... Refrigerant, 11... Solidified refrigerant.

Claims (1)

[Scope of utility model registration request] In a jock-like container in which the peripheral wall 3 is formed into a double wall structure, a bottom 4a is integrally provided on the inner wall 4 constituting the peripheral wall, and the outer wall 5 is extended downward from the bottom of the inner wall,
A bottom cover 6 is attached to the downward opening formed by the extension part 5a, a cavity 9 is formed spanning the bottom and the peripheral wall, and the cavity is divided into upper and lower parts below the bottom of the inner wall. A deformable partition plate 7 is provided, a liquid refrigerant 10 that solidifies at cold temperatures is sealed in the upper cavity 9a, and a ventilation hole 16 communicating with the lower cavity 9b is provided in the bottom cover, so that the partition plate prevents the solidification of the refrigerant. A cold storage container that can be deformed in the direction of the lower empty space according to the demand.