JP5786667B2 - Cold storage container - Google Patents

Description

  The present invention relates to a cold storage container, and more particularly to a cold storage container used for storage and transportation of specimens, pharmaceuticals, drugs, reagents, and the like that require temperature management.

  When storing and transporting specimens, pharmaceuticals, chemicals, reagents, etc. in medical institutions, inspection institutions, research institutions, by storing the object to be cooled together with a cold insulation material such as dry ice or a cold storage material in a cold insulation container, The temperature of the object to be cooled is maintained for a long time.

  Examples of the cold insulation container as described above include a metal container body having a vacuum heat insulating structure and a lid body having a sheet-like foam cushioning material mounted on the inner surface, and the foam cushioning when the lid body is closed. A transport container has been proposed in which an appropriate hermetic state is maintained by a material. And when using such a container, the small box in which the frozen pharmaceutical was accommodated as a to-be-cooled object was stored in the container main body, and the dry ice was piled up on the upper part of the small box (patent document 1).

  In addition, as a cold storage container used for the same purpose, an object to be cooled is stored in an inner box made of expanded polystyrene, and a cool storage material is stored together with the inner box in a box (outer box) made of the same material. Storage containers have been proposed. And in such a container, by arranging the latent heat type regenerator material over the entire outer peripheral side of the inner box and using the regenerator material in two types of solidified state and molten state, a precise temperature can be obtained. Management is performed (Patent Document 2).

Utility Model Registration No. 3071064 JP 2011-51632 A

  By the way, although the container of a vacuum heat insulation structure is excellent in heat insulation, there exists a problem that the weight is too large to carry. On the other hand, foamed polystyrene containers are easily damaged by external impacts and have a problem that they are not durable enough to be used repeatedly. And all the conventional cold storage containers need to arrange | position these in an appropriate position, when accommodating the inner box (small box) in which the to-be-cooled object was accommodated, and a cold insulating material in a container main body (outer box). In addition, there is a problem that it takes time to put in and out the object to be cooled and the cold insulation material, and it is difficult to handle.

  The present invention has been made in view of the above circumstances, and its purpose is to be relatively lightweight and easy to carry, excellent in durability, extremely easy to put in and out the object to be cooled and the cold insulation material, and to be covered. An object of the present invention is to provide a cold insulation container capable of keeping the temperature of a cooling object constant for a long time.

  In order to solve the above problems, the cold box of the present invention adopts a double box structure comprising an outer box having a flexible structure and an inner box having heat insulation properties, and a gap is provided in the outer box. By arranging the inner box, it is possible to prevent damage to the inner box due to external impacts, further enhance the heat insulation by the air layer around the inner box, and the inner box body of the inner box has a specific structure. By arranging the partition member and forming the cooled object accommodation area and the cold insulation material accommodation area by the partition member, the lid of the outer box and the inner box can be opened, and the cooled object and the cold insulation material can be directly put in and out of each. I did it.

That is, the gist of the present invention is a cold storage container for storing an object to be cooled together with a cold insulating material and maintaining the temperature of the object to be cooled in a predetermined range, and a lid is provided on the upper end of the bottomed cylindrical outer box main body. A portable outer box having a flexible structure, and a heat-insulating inner box with a lid attached to the upper end of the bottomed cylindrical inner box main body, The outer side of the box body is provided with a gap and is positioned in the outer box, and a cylindrical body is erected along the center line of the inner box body in the inner box body. A partition member having a structure is arranged, and in a state where the lid of the outer box and the lid of the inner box are opened, an object to be cooled can be directly taken in and out of the cylindrical body from above, and the cylindrical body the outer peripheral portion are out capable constructed directly cold material from above, thermally insulating material constituting the inner box is gold A composite material layered plate and the foamed resin, at least the outer surface of the inner box is resides in cold container, characterized in that it is constituted by a metal plate.

  According to the cold insulation container according to the present invention, the double box structure in which the heat-insulating inner box is arranged in the outer box can enhance the heat insulation performance and the impact resistance, and the outer box lid and the inner box. Since the object to be cooled and the cold insulating material can be taken in and out directly by opening the lid, the handling is extremely easy. And since the inside of the inner box body can be partitioned into a cooled object storage area and a cold insulation material storage area by the partition member and the periphery of the cooled object can be surrounded by the cold insulation material, the temperature of the cooled object can be kept for a long time. Can be held constant.

It is an expansion | deployment perspective view which shows the structure of the principal part of the cold storage container which concerns on this invention. It is an expansion | deployment perspective view which shows the internal structure of the inner box of the cold storage container which concerns on this invention. It is a graph which shows the cold storage performance of the cold storage container which concerns on this invention (measurement example 1). It is a graph which shows the cold storage performance of the cold storage container which concerns on this invention (measurement example 2).

  An embodiment of a cold container according to the present invention will be described with reference to the drawings. As shown in FIG. 2, the cold container according to the present invention is a container that accommodates an object 5 to be cooled together with the cold insulator 4 and keeps the temperature of the object to be cooled within a predetermined range. Used for storage and transportation. Samples, medicines, and the like that are the objects to be cooled 5 may be packaged with a packaging material such as a film in order to shield the outside air, and are stored in a dedicated small container to prevent contamination and overcooling. It may be.

  Examples of the cold insulating material 4 used in the present invention include dry ice and a cold storage material, which are appropriately selected according to the management temperature of the object to be cooled. The regenerator material is suitable for managing the temperature of the object 5 to be cooled over a relatively long time with a positive temperature threshold. Examples of the regenerator material having a melting point of 0 ° C. include a superabsorbent polymer, a preservative, and a stabilizer added to water. Examples of the regenerator material having a melting point of 0 ° C. or lower include a material in which an inorganic salt such as sodium chloride, ammonium chloride, or potassium chloride is dissolved in water. In addition, as a cold storage material having a melting point higher than 0 ° C., tetra n-butylammonium (TBAB), n-tetradecane (n-paraffin type), capric acid (fatty acid), sodium thiosulfate (inorganic hydrate), etc. What was dissolved in water is mentioned.

  As shown in FIG. 1, the cold storage container of the present invention is configured in a double box structure in order to improve impact resistance and heat insulation, and a lid 11 is provided on the upper end of a bottomed cylindrical outer box body 10. And a portable outer box 1 having a flexible structure, and an inner box 2 having a heat insulating property with a lid 21 attached to the upper end of a bottomed cylindrical inner box body 20.

  The outer box 1 is made of a mat-like material formed by covering both surfaces of a foamed resin sheet such as foamed polyurethane having a thickness of about 3 to 8 mm with a water-repellent sheet. Specifically, the outer box 1 is obtained by sandwiching a foamed polyurethane sheet between cloth-like materials and sewing them. Examples of the cloth-like material used for the surface of the outer box 1 include a material such as nylon or polyester that has been subjected to a water-repellent finish.

  The outer box main body 10 is formed in a square cylinder shape whose bottom shape is, for example, square and whose upper end is opened, and the lid is formed in a square covering the opening of the outer box main body 10. One side of the lid 11 is sewn to the outer box body 10, and ear pieces are projected from the other three sides. A hook-and-loop fastener is attached to the inner side of these ear pieces and the outer periphery of the upper end of the outer box main body 10 so that the ear pieces stick to the outer box main body 10 when the lid 11 is closed. The outer dimensions of the outer box 1 are designed such that one side when viewed in horizontal section is about 300 to 400 mm and the height is about 300 to 400 mm. Further, a handle or a shoulder strap is attached to the outer box body 10 so that it can be easily carried. Reference numeral 14 in FIG. 1 indicates a shoulder strap.

  The inner box 2 is composed of a composite material in which a metal plate and a foamed resin are laminated in order to improve heat insulation and impact resistance. Specifically, as shown in FIG. 2, the inner box body 20 of the inner box 2 is formed of a stainless steel plate having a thickness of about 0.5 to 2 mm and has a bottomed cylindrical outer shape with different diameters and heights. The can and the inner can are stacked in a nested state, and urethane, for example, is injected into the gap and foamed. When the surface of the inner box body 20 is made of metal as described above, it can be cleaned every time the object 5 is replaced.

  The lid 21 of the inner box 2 is formed of a composite material in which a metal plate and a foamed resin are laminated, as in the inner box body 20. Specifically, the top plate portion is formed in an inverted shallow dish shape having a circular planar shape and a falling portion on the outer peripheral portion, and a shallow dish shape having a circular planar shape and a ridge on the outer peripheral portion of the upper end. For example, urethane is injected and foamed into the gap between the back plate and the back plate. That is, the lid 21 is formed in a short-axis two-stage columnar shape, and the small diameter portion on the lower end side is designed to fit into the opening of the inner box body 20.

  The outer diameter of the inner box body 20 is about 240 to 300 mm, the inner diameter of the inner box body 20 is about 210 to 270 mm, and the thickness of the heat insulating material (foamed urethane) of the inner box body 20 is about 10 to 20 mm. The height of 20 is about 240 to 300 mm. The thickness of the lid 21 of the inner box 2 is about 70 to 80 mm, and the thickness of the lid 21 is 40 to 60 mm when the plate-like heat insulating material 23 described later is not separately disposed on the upper portion of the inner box body 20. Degree. A fastener 24 is attached to the outer peripheral surface of the inner box body 20 and the outer peripheral portion of the lid 21 in order to close the lid in an airtight manner. Furthermore, a handle 25 is attached to the inner box body 20 so that the inner box 2 can be easily put in and out of the outer box 1.

  Further, a thermometer 7 for managing the internal temperature is attached to the lid 21 of the inner box 2. As such a thermometer 7, various thermometers can be used as long as they use a platinum resistance thermometer, a thermocouple, a thermistor or the like as a sensor and display the measured temperature on a liquid crystal screen. Examples of the thermometer 7 that can be embedded in the lid 21 include a data logger “TR-71Ui” (trade name) manufactured by T & D Corporation.

  As shown in FIG. 1, the inner box 2 is arranged in a state of being positioned in the outer box 1 with a gap provided on the outer surface side of the inner box body 20. Specifically, the bottom and upper end in the outer box body 10 are formed of foamed urethane or foamed polystyrene, and the planar shape is fitted to the outer box body 10, in other words, the planar shape is formed in a square shape. Support plates 12 and 13 are arranged. The support plate 12 disposed at the bottom of the outer box body 10 is provided with a circular recess 12c into which the bottom of the inner box 2 is fitted on the upper surface of the support plate. Further, the support plate 13 disposed at the upper end portion in the outer box body 10 is provided with a circular recess 13c in the lower surface of the support plate, into which the upper end portion (the lid 21 portion) of the inner box 2 is fitted. Yes.

  The thickness of the upper and lower support plates 12 and 13 is about 60 to 80 mm, and the depth of the recesses 12c and 13c is about 40 to 60 mm. That is, when the inner box 2 is disposed inside the outer box 1, the inner box 2 is positioned between the upper and lower support plates 12 and 13 so as to be positioned at the center inside the outer box without floating. In addition, in order to improve operativity, the support plate 13 arrange | positioned at the upper end part in the outer case main body 10 may be previously affixed on the back surface of the lid | cover 11 of the outer case 1 with a hook-and-loop fastener.

  In the cold storage container of the present invention, in order to improve the handleability and keep the temperature of the object to be cooled constant, as shown in FIG. 2, the inner box body 20 has a center line along the center line of the inner box body. A partition member 3 having a structure in which a cylindrical body is erected is disposed. The partition member 3 divides the inside of the inner box main body 20 into a cooled object accommodation area and a cold insulation material accommodation area. By injection molding polyethylene, polypropylene, etc., for example, a flat bottomed cylindrical shape It is formed in a double bottomed cylindrical shape having a structure in which an inner cylindrical portion 31 as a cylindrical body is protruded from the center of an outer cylindrical portion 30 as a container.

  In the state in which the partition member 3 is disposed in the inner box 2, the inside of the inner cylindrical portion 31 of the partition member is a cooled object storage region, and the gap between the outer cylindrical portion 30 and the inner cylindrical portion 31 is a cold insulation material storage region. It is said. The partition member 3 has a thickness of about 0.5 to 2 mm and a height of about 100 to 140 mm, the outer cylindrical portion 30 has an outer diameter of about 210 to 270 mm, and the inner cylindrical portion 31 has an outer diameter of 50 to 130 mm. Degree. The cold insulation container of the present invention has the inner cylindrical portion 31 (in the state where the lid 11 of the outer box 1 and the lid 21 of the inner box 2 are opened by arranging the partition member 3 as described above in the inner box 2. The object 5 to be cooled can be directly taken into and out of the inside of the cylindrical body), and the cold insulator 4 can be directly taken in and out of the outer peripheral part of the inner cylindrical portion 31 (cylindrical body). The partition member 3 may have a structure in which a cylindrical body is disposed along the center line of the disk at the center of the disk.

  Further, in the cold storage container of the present invention, in order to further enhance the heat insulation performance of the inner box 2, the bottom and upper end in the inner box body 20 are made of a foamed resin such as foamed polystyrene, as shown in FIG. Plate-shaped heat insulating materials 22 and 23 that fit into the cross-section of the outer box body 10 are disposed. That is, in the inner box 2, the heat insulating material 22 is disposed at the bottom of the inner box body 20, the partition member 3 is disposed on the heat insulating material, and the heat insulating material 23 is disposed above the partition member. ing. The heat insulating materials 22 and 23 are formed in a disk shape as illustrated in the figure, and the thickness thereof is designed to be about 10 to 30 mm. In addition, in order to improve operativity, the heat insulating material 23 arrange | positioned at the upper part of the partition member 3 may be previously affixed on the back surface of the lid | cover 21 with a hook-and-loop fastener. Moreover, the thickness of the disk-shaped resin molded body inside the lid 21 of the inner box 2 can be designed to be thick without using the heat insulating material 23 described above.

  When using the cold storage container of the present invention, first, the lid 11 of the outer box 1 is opened, the support plate 13 at the top of the outer box body 10 is taken out, the lid 21 of the inner box 2 is opened, and the inner box body is opened. The upper heat insulating material 23 in 20 is taken out. Next, a cold storage material that has been cooled or frozen in advance as the cold insulation material 4 is loaded along the partition member 3 in the inner box 2. Specifically, the cold storage material is arranged in the cold insulation material accommodation region partitioned by the partition member 3, in other words, in the outer peripheral portion of the inner cylindrical portion 31 (tubular body).

  The kind and amount of the regenerator material to be used and the arrangement method thereof can be appropriately selected according to the temperature to be maintained by the object 5 to be cooled. For example, two or three kinds of cold storage materials having different melting points may be used, and the cold storage material having a low melting point may be disposed outside. FIG. 2 shows an example in which three types of cold storage materials having different melting points are arranged in a ring shape as the cold insulation material 4. In addition, when charging the regenerator material into the inner box 2, the regenerator material before cooling is accommodated in the partition member 3, and the partition member is accommodated in the refrigerator or freezer to cool or freeze the regenerator material for use. The partition member 3 may be housed in the inner box body 20.

  After the cool storage material is loaded in the inner box 2, the object to be cooled 5 is accommodated in the object-to-be-cooled accommodation area partitioned by the partition member 3, in other words, inside the inner cylindrical portion 31 (tubular body). And after arrange | positioning the heat insulating material 23 again in the upper part in the inner case main body 20, the inner case 21 of the inner case 2 is closed, and then the support plate 13 is arrange | positioned in the upper part of the outer case main body 10, and the upper end of the inner case 2 is shown. After fixing the part, the lid 11 of the outer box 1 is closed. When the object to be cooled 5 is taken out after being stored or transported as described above, the cover 11 of the outer box 1 is opened, the support plate 13 is taken out, and then the cover 21 of the inner box 2 is removed. The object 5 to be cooled can be easily taken out from the inner cylindrical portion 31 (tubular body) of the partition member 3 by opening and removing the upper heat insulating material 23.

  As described above, in the cold storage container of the present invention, a double box structure including the outer box 1 having a flexible structure and the inner box 2 having heat insulation is adopted, and a gap is provided in the outer box 1. By disposing the inner box 2, damage to the inner box 2 against an external impact is prevented, and heat insulation is further enhanced by an air layer around the inner box 2. Then, the partition member 3 having a specific structure is arranged in the inner box body 20 of the inner box 2, and the object to be cooled and the cold insulation material storage area are formed by the partition member, so that the lid 11 of the outer box 1 and The lid 21 of the inner box 2 is opened, and the object to be cooled 5 and the cold insulating material 4 are directly put in and out of each.

  That is, according to the cold insulation container of the present invention, the heat insulation performance and the impact resistance performance can be improved by the double box structure in which the inner box 2 having heat insulation is arranged in the outer box 1. By opening the lid 11 and the lid 21 of the inner box 2, the object to be cooled 5 and the cold insulating material 4 can be directly taken in and out, so that handling is extremely easy. And since the inside of the inner box main body 20 can be partitioned into the cooled object storage area and the cold insulation material storage area by the partition member 3, and the periphery of the cooled object 5 can be surrounded by the cold insulation material 4, the cooled object can be cooled for a long time. The temperature of the object 5 can be kept constant.

  About the cold storage container of this invention, the to-be-cooled object 5 was accommodated with the cold insulating material, and the temperature retention performance was confirmed by measuring the temperature change of the to-be-cooled object. The cold storage container was manufactured according to the specifications shown in the following table.

  As a sample of the object 5 to be cooled, 50 ml of water is put in three bottles each having a diameter of 37 mm and a height of 80 mm, and these bottles are accommodated in a plastic bag, and the outside of the plastic bag is wrapped with aluminum foil. did. The cold insulation material 4 prepared 2 types, a 4 degreeC type (melting temperature 4 degreeC) cold storage material, and a 0 degreeC type (melting temperature 0 degreeC) cold storage material. Each cool storage material is a bag filled with a liquid composition composed of water and TPAB. One cool storage material in a packaged state has a width 60 × length 120 × thickness 20 (mm) and a weight 90 g. It was.

Measurement example 1:
The outer box 1 and the inner box 2 were left open for 2 hours or more in a room where the room temperature was set to 25 ° C. The object to be cooled 5 is a refrigerator set at an internal temperature of 3 ° C. until the temperature of the object to be cooled becomes constant after the temperature sensor is attached to the inside of the aluminum foil (indicated by reference numeral 6 in FIG. 2). Cool enough. In addition, 22 4 ° C. type regenerator materials were once frozen in a freezer having an internal temperature of −20 ° C., and then transferred to a refrigerator set at an internal temperature of 3 ° C. and stored for 12 hours or more.

  In the measurement, a cold storage container is placed in a room at a room temperature of 25 ° C., and the above-mentioned 22 4 ° C. type regenerators are formed in an annular form in a state of being overlapped on the outer peripheral portion of the inner cylindrical portion 31 of the partition member 3. In addition, the object to be cooled 5 was loaded into the inner cylindrical portion 31 of the partition member 3, and the lid 21 of the inner box 2 and the lid 11 of the outer box 1 were immediately closed. And when temperature change was confirmed with the temperature sensor attached to the to-be-cooled object 5, the temperature transition as shown in the graph of FIG. 3 is seen, and the temperature of the two measurement points of the to-be-cooled object 5 becomes 6 degreeC or more. The time required until 17 hours and 19 hours.

Measurement example 2:
As the cold insulating material 4, 12 4 ° C type cold storage materials and 10 0 ° C type cold storage materials were used. About 12 4 degreeC type cool storage materials, after freezing once with the freezer of the internal temperature -20 degreeC, this was moved to the refrigerator set to the internal temperature 3 degreeC, and was stored for 12 hours or more. On the other hand, about 10 0 degree-type cool storage materials, after making it freeze once with the freezer of the internal temperature -20 degreeC, this was moved to the other refrigerator set to the internal temperature 0 degreeC, and was stored for 1 hour or more.

  In the measurement, when the regenerator material was annularly arranged on the outer peripheral portion of the inner cylindrical portion 31 of the partition member 3, the 4 ° C type regenerator material was arranged on the inner side, and the 0 ° C type regenerator material was arranged on the outer side. The other conditions were the same as those in Measurement Example 1, and when the temperature change was confirmed with the temperature sensor attached to the object 5 to be cooled as in Measurement Example 1, a temperature transition as shown in the graph of FIG. 4 was observed. The time required for the temperature at the two measurement points of the object to be cooled 5 to be 6 ° C. or higher was 20 hours or longer. As in measurement example 2, in the inner box 2, a 4 ° C. type regenerator material is disposed on the inner side, and a 0 ° C. type regenerator material is disposed on the outer side, thereby obtaining a higher cold insulation effect on the object 5 to be cooled. It was confirmed that

DESCRIPTION OF SYMBOLS 1: Outer box 10: Outer box main body 11: Lid 12: Support plate 12c: Indentation 13: Support plate 13c: Indentation 14: Shoulder strap 2: Inner box 20: Inner box main body 21: Lid 22: Insulation material 23: Insulation material 24: Fastener 25: Handle 3: Partition member 30: Outer cylindrical part 31: Inner cylindrical part (tubular body)
4: Cooling material 5: Object to be cooled 6: Temperature measurement point 7: Thermometer

Claims (3)

A cold storage container that holds an object to be cooled together with a cold insulating material and maintains the temperature of the object to be cooled in a predetermined range, and has a flexible structure with a lid provided at the upper end of a bottomed cylindrical outer box body. A portable outer box, and a bottomed cylindrical inner box body with a lid attached to the upper end of the inner box body and having heat insulation, the inner box having a gap on the outer surface side of the inner box body A partition member having a structure in which a cylindrical body is erected along the center line of the inner box main body is disposed in the inner box main body. In the state where the lid of the outer box and the lid of the inner box are opened, the object to be cooled can be directly taken in and out of the cylindrical body from above, and the cold insulator is placed on the outer peripheral portion of the cylindrical body from above. are out capable constructed directly thermally insulating material constituting the inner box is obtained by laminating a metal plate and the foamed resin double A timber, cold container at least an outer surface of the inner box, characterized in that it is constituted by a metal plate.   The cold storage container according to claim 1, wherein the soft elastic material constituting the outer box is a mat-like material formed by coating both surfaces of a foamed resin sheet with a water-repellent sheet. The cold storage container according to claim 1 or 2 , wherein a plate-like heat insulating material made of foamed resin is disposed at the bottom and upper end in the inner box body.