KR20080096089A - Cool-keeping system - Google Patents

Abstract

A cool-keeping system is provided to extend the cool-keeping time remarkably by arranging adiabatic material and materials with large latent heat or heat capacity by turns. A cool-keeping system comprises: a first box(10) which is formed by a first wall(12) and a first bottom plate; a lid(40) which covers the upper part of first wall of the first box; a wall member which is parallel with the first wall and includes a second wall installed inside the first box; a first refrigerant interposed between the first wall and the second wall(22); and a second refrigerant placed inside the second wall.

Description

Cooling System {Cool-Keeping System}

1 is a perspective view showing a state in which the components of the cold storage system of the present invention are coupled.

2 is a plan view illustrating a coupling relationship between a first box and a first refrigerant, and a second box and a second refrigerant according to the present invention.

** Description of the symbols for the main parts of the drawings **

10: first box 11: first bottom plate

12: first wall 19: locking jaw

20: second box 21: second bottom plate

22: second wall 29: locking jaw

30: refrigerant tray 40: lid

50: first refrigerant 51: skin part

52: absorber 60: second refrigerant

61: skin 62: absorber

The present invention relates to a cold storage system capable of storing or transporting a storage within a desired temperature range for a long time. Specifically, a partition member is installed inside the outer first box, and a refrigerant is introduced between the first box and the partition member and between the partition member and the storage to alternately arrange the heat insulating material and the latent heat or material having a high heat capacity. The present invention relates to a cold storage system that achieves the effect of extending the cold storage time, which has never been achieved in the conventional single stage cold storage system.

Generally, an ice box is a box-shaped container for transporting a stored object in a refrigerated or frozen state through a coolant such as ice or dry ice. The upper lid is open and closed, and many of the outer and inner surfaces of the box are made of synthetic resin. Polyurethane, polystyrene foam, etc. are used.

The capacity of the ice box varies from about 4 to 40 L, but the cold storage capacity is proportional to the amount of coolant, and depending on the type is slightly different.

For example, in the case of a commonly used 20 to 25 L ice box, when 4 kg of ice is put in a place where the temperature is about 30 ° C., the temperature of the bottom of the box is maintained at 5 ° C. or less on average for 15 hours. to be.

In addition, when dry ice is used instead of ice, the cooling time is about twice as effective.

However, when the coolant and the storage are put together in the same space, ice is rapidly changed into liquid water and dry ice is converted into carbon dioxide in the gas phase, which makes it difficult to maintain the refrigeration or freezing effect for a long time. This problem becomes more serious when purchasing items using an online shopping mall or a TV home shopping channel using the Internet, which requires a longer time for product delivery, than a purchase in person.

Furthermore, when the dry ice is used as a coolant in the ice box, the sublimation point of the dry ice is very low at −78.5 ° C. or lower, and thus, if the dry ice is in direct contact with the storage stored with the dry ice, there may be a problem that these storages may suffer cold damage. .

In order to prevent the problem caused by the cold sea conventionally stored in a box of a small standard, and put it in a box of a large standard containing a coolant, and then a primitive method of filling the box of the large standard with additional coolant This has been used.

However, this method makes it difficult to uniformly and uniformly load the coolant around the box of the small size, and there is a risk that the box of the small size is oriented in one direction during transportation. In this case, the possibility that the temperature control of the storage fails will be significantly increased.

In addition, when the coolant is filled to solve this problem of pulling, there is also a problem of economic disadvantage due to the excessive consumption of the coolant.

Especially for expensive drugs such as vaccines, it is not only economical, but even if the vaccine is well-controlled in temperature control, a single dose can provide sufficient efficacy. It has been the cause.

For this reason, the World Health Organization (WHO) recommends creating "Guidelines on the international packaging and shipping of vaccines" and including them in the technical specification and requirements. In particular, the WHO categorized vaccines into categories to specify the minimum and maximum allowable temperatures that can be exposed for at least 48 hours of international logistics. Therefore, all vaccine manufacturers must ensure that their packaging meets the following criteria. ("Guidelines on the international packaging and shipping of vaccines", 2005, WHO / IVB / 05.23.)

-Class A packaging: Prior to packaging, vaccines should be kept within the storage temperature range requested by the manufacturer, and during packaging and transport, the vaccine will not rise above +8 ° C after exposure to outside temperature + 43 ° C for at least 48 hours. Insulation packaging

-Class B packaging: Prior to packaging, vaccines must be maintained within the storage temperature range requested by the manufacturer, and during packaging and transport, the vaccines must not rise above +30 ° C even if exposed to outside temperature + 43 ° C for at least 48 hours. Insulation packaging

-Class C packaging: Prior to packaging, vaccines must be kept within the storage temperature range requested by the manufacturer, and when packaged and transported, if exposed to an external temperature of + 43 ° C, the internal vaccine will not exceed + 30 ° C for at least 48 hours. Insulation packaging that prevents the vaccine from going down below +2 ° C for at least 48 hours if exposed to an outside temperature of -5 ° C.

WHO classification and temperature criteria for vaccine transport (at least 48 hours) Liu Type of vaccine Outside temperature Allowable temperature Allowable temperature A OPV +43 ℃ No limit + 8 ℃ B BCG Hib (freeze-dried) measles MR MMR meningococcal A & G yellow fever +43 ℃ No limit +30 ℃ C DTP DTP-HepB DTP-Hib (Liquid) DT IPV HepB Hib (Liquid) Td TT +43 ℃ + 2 ℃ +30 ℃ -5 ℃ + 2 ℃ +30 ℃

Table 1 above is a guideline for international logistics packaging to classify vaccines based on their thermal stability.

However, while satisfying these enhanced vaccine transport logistics packaging standards, economical and systematic packaging systems have not yet been developed despite the great social necessity.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a new cooling system that significantly extends the cold holding time by alternately arranging a heat insulating material and a latent heat to a large heat capacity.

In order to achieve the object as described above, the cold storage system of the present invention,

A first box comprising a first bottom plate and a first wall integrally formed vertically from an edge of the first bottom plate;

A lid detachably installed to cover an upper end of the first wall of the first box to be blocked from the outside;

A partition member including a second wall parallel to each of the first walls and provided inside the first box;

A first refrigerant interposed between the first wall and the second wall; And

And a second refrigerant provided on the inner side surface of the second wall.

Moreover, it is preferable that the said partition member is a 2nd box which consists of a 2nd bottom plate integrally formed horizontally from the lower end of the said 2nd wall, and the said 2nd wall.

In addition, it is preferable that the first refrigerant is further interposed between the first bottom plate and the second bottom plate.

In addition, it may further include a refrigerant tray parallel to the lid, the engaging jaw formed in the inner side or the outer side of the first wall, or the second wall, or in contact with the upper end of the second wall.

In addition, it is preferable that the first refrigerant is further provided on the refrigerant tray.

In addition, it is preferable that the second refrigerant is further provided on the second bottom plate.

In addition, it is preferable to further include the second refrigerant to cover the storage stored in the second wall inner space.

In addition, the first refrigerant and the second refrigerant

Liquid,

An absorber for absorbing the liquid substance, and

Epidermis containing the liquid substance and absorbent body

It is preferable that it is a cold pack containing.

In addition, the skin portion is formed by bonding the opposite edges of the front and rear (bonding), it is preferable that the engaging portion for preventing the escape of the absorber is formed in both core portions of the edge bonded later than the remaining three corners.

In addition, it is preferable that the temperature of the said 1st refrigerant | coolant is the above or below its freezing point at the time of cold start, and the temperature of the said 2nd refrigerant | coolant is above the freezing point.

In addition, the liquid substance is preferably water.

In addition, it is preferable that the temperature of the water in the first refrigerant is at least 0 ° C or less and the temperature of the water in the second refrigerant is at least 0 ° C at the start of cold storage.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In addition, in the following description there are shown a number of specific matters such as specific components, which are provided only to aid a more general understanding of the present invention that the present invention may be practiced without these specific matters in the art. It is self-evident to those who have knowledge of the world. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a view showing a state in which each component constituting the cold storage system of the present invention is coupled to each other, Figure 2 is a plan view of the portion except the lid of the cold storage system of the present invention so coupled.

First, the cold storage system of the present invention is formed vertically at the edges of the first bottom plate (11-not shown) and the first bottom plate (11-not shown), and is integrally formed with the first bottom plate (11-not shown). The 1st box 10 formed by the 1 wall 12 is made an essential component. The first box 10 is preferably made of a synthetic resin foam excellent in heat insulating effect.

Then, the lid 40 which covers the upper end of the first wall 12 of the first box 10 from the outside is detachably installed. By covering the lid 40 to the first box 10, the internal storage can achieve a basic air blocking effect.

In the conventional cold storage system, such as an ice box, in addition to such a configuration to achieve the purpose of cooling only by including a refrigerant therein, the problems of the prior art has already been described.

The present invention is characterized in that the first box 10 is provided with a second wall 22 parallel to the first wall 12 of the first box 10.

As the second wall 22, which is thermally insulated, is additionally introduced, the heat or cold outside does not easily affect the storage, and the cold storage duration is extended.

Furthermore, compared to the conventional form of filling a small box into which a refrigerant is filled in a large box and storing the contents therein, a remarkable improvement can be achieved in terms of uniform distribution of the refrigerant and prevention of waste due to use of an appropriate amount.

In addition, by introducing a refrigerant between the second wall 22 and the first wall 12, the cool air can be kept longer, and thus the cold effect can be maintained for a long time.

The partition member 20 ′ (not shown) including the second wall 22 may be fixed to the first box 10, or may be detachably coupled by a configuration such as a recessed groove.

More preferably, the second wall 22 includes a second bottom plate 21-not shown, which is formed to extend horizontally from the lower end of the second wall 22 and is integral with the second wall 22. It is preferable to form the second box 20 together with).

Bottom view side surface of the deposit by interposing a first refrigerant 50 between the second bottom plate 21-not shown of the second box 20 and the first bottom plate 11-not shown of the first box 10. Similarly, the structure of 'insulation material-refrigerant-insulation material' can be achieved.

On the other hand, the upper surface of the storage can also achieve a double heat insulation structure by introducing the refrigerant tray (30).

Specifically, the engaging jaw 19, 29-not shown, or the second wall parallel to the lid 40 and formed on the inside of the first wall 12 or on the inside or outside of the second wall 22. It is further provided with a coolant tray 30 which is brought into contact with the upper end of the sieve 22 and the first coolant 50 is introduced thereon, such that the lid 40-the first coolant 50-the coolant tray 30 'Will have the structure of' insulation-refrigerant-insulation '. This ensures that all six sides surrounding the storage have this structure.

Another feature of the present invention is that not only the insulation but also the refrigerant double wraps the storage.

In general, the refrigerant mainly uses a material that has a high specific heat or heat capacity that does not change easily even when the ambient temperature changes. By providing such a coolant further adjacent to the storage, the storage can be maintained at a more constant temperature.

However, the second refrigerant 60 provided adjacent to the storage in this way is adopted to assist the constant temperature of the storage, and thus cold damage does not occur, and thus, at a temperature above the freezing point of the second refrigerant 60 itself. Insulation should be initiated.

This second refrigerant 60 may be introduced on four sides of the deposit, i.e., on the inner side of the second wall 22, preferably with the bottom of the deposit, i.e. the top of the second bottom plate 21-not shown. It is preferable that the upper surface of the storage, ie, the lower surface of the lid 40 or the refrigerant tray 30, is further provided.

On the other hand, between the walls 12 and 22 of the present invention, and between the bottom plate (11-not displayed, 21-not displayed) is a plate-like space, so it is difficult to apply a refrigerant whose shape is not regular at the time of freezing. In particular, when the thickness of one side is thicker than the thickness of the other side, it may occur that it can not be inserted into the space on the plate.

Therefore, it is preferable to use a refrigerant containing absorbers 52 and 62 which control the form of the liquid substance before freezing. That is, it is preferable to use a cold pack including a liquid material, absorbers 52 and 62 for absorbing the liquid material, and skin parts 51 and 61 for accommodating the liquid material and the absorbers 52 and 62. Do.

The cold pack is suitable for the present invention in that most of the liquid substance is frozen in the state of being absorbed in the absorbents 52 and 62 when frozen, and thus has a uniform plate shape.

However, in the cold pack, when the absorbents 52 and 62 are introduced into the skin 51 and 61 and the liquid material is injected, the absorbents 52 and 62 may float and cause a problem in sealing. have.

Accordingly, when the skin portions 51 and 61 bond edges facing each other on the front and rear surfaces, the skin parts 51 and 61 escape even when the absorbers 52 and 62 float on both cores of the edges bonded later than the other edges. It is preferable to form the locking portion so that it can be suppressed. Such a locking portion can be simply formed by bonding only at a specific point.

Another major feature of the present invention is that water can be used as the medium of the refrigerant to be used.

It was mentioned earlier that the refrigerant has a large specific heat or heat capacity, so that the temperature change itself is slow even when the ambient temperature changes.

In particular, water has a significantly greater latent heat than other substances of similar molecular weight. Therefore, the temperature change of the storage can be induced even more gently due to the heat entering and exiting the water phase change.

Above all, water is environmentally friendly in itself, which also has the advantage of being much easier to handle than other organic-inorganic refrigerants on the gel.

It was mentioned earlier that the second refrigerant 60 of the present invention preferably starts cooling at a temperature above its freezing point. On the other hand, the temperature of the first refrigerant 50 is sufficient below the freezing point if a large amount of cold effect is required, and above the freezing point if a little cold effect is required. If used, it may be appropriately selected based on 0 ° C.

Although the above has been illustrated and described with respect to the preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, those skilled in the art without departing from the gist of the present invention various modifications Of course, implementation is possible. Therefore, the scope of the present invention should not be construed as being limited to the above embodiments, but should be defined by the claims below and equivalents thereof.

According to the present invention, it is possible to prevent the indirect contact with the cold coolant by preventing the cold storage of the original, and to significantly extend the cold time by arranging the heat insulating material and the coolant having a large latent heat or heat capacity alternately.

In particular, in the vaccine sector, it is possible to meet the enhanced vaccine transport logistics packaging standards, to develop economical packaging materials, to design systematic packaging systems, and to promote the export of vaccine industry through logistics costs and packaging optimization. In addition, by reducing unnecessary space inside the packaging container, it can increase price competitiveness, ensure the stability of long-haul vaccines, and prevent condensation due to internal temperature variations, thereby preventing legal problems such as returns or litigation.

The present invention is expected to make a significant contribution to establishing a more reliable logistics industry by being used not only in the pharmaceutical industry, such as vaccine, but also in the logistics of the livestock and agricultural and fisheries industries.

Claims (12)

A first box comprising a first bottom plate and a first wall integrally formed vertically from an edge of the first bottom plate; A lid detachably installed to cover an upper end of the first wall of the first box to be blocked from the outside; A partition member including a second wall parallel to each of the first walls and provided inside the first box; A first refrigerant interposed between the first wall and the second wall; And And a second refrigerant provided on the inner side of the second wall. The method of claim 1, The partition member is a cold storage system, characterized in that the second bottom plate formed integrally horizontally from the lower end of the second wall and the second box consisting of the second wall. The method of claim 2, And the first refrigerant is interposed between the first and second bottom plates. The method of claim 1, And a coolant tray parallel to the lid, the locking jaw formed in the inner side of the first wall, the inner side or the outer side of the second wall, or in contact with the upper end of the second wall. The method of claim 4, wherein The cold storage system, characterized in that the first refrigerant is further provided on the refrigerant tray. The method of claim 3, wherein And the second refrigerant is further provided on the second bottom plate. The method of claim 1, And said second refrigerant covering said deposit stored in said second wall interior space. The method of claim 1, wherein the first refrigerant and the second refrigerant Liquid, An absorber for absorbing the liquid substance, and Epidermis containing the liquid substance and absorbent body Cooling system, characterized in that the cold pack comprising a. The method of claim 8, wherein the skin portion Formed by bonding the opposite edges of the front and rear (bonding), the cold storage system, characterized in that the engaging portion for preventing the escape of the absorber formed on both core portions of the edge bonded later than the remaining three corners. The method of claim 1, At the start of the cold storage, the temperature of the first refrigerant is above or below its freezing point, and the temperature of the second refrigerant is above the freezing point. The method of claim 8, And the liquid material is water. The method of claim 11, The temperature of the water in the first refrigerant is at least 0 ℃ or less at the start of the cold storage, the temperature of the water in the second refrigerant is at least 0 ℃.

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