JP2015017792A - Simple refrigeration machine integrated cold insulation container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple refrigeration machine integrated cold insulation container that can transport frozen cells at a freezing temperature or less at which the quality of the frozen cells can be kept with cold of a refrigeration machine, and that can be manufactured at low cost.SOLUTION: In a simple refrigeration machine integrated cold insulation container, a heat insulation container is divided into: a first heat insulation container that thermally integrates a storage container, storing a capsule containing freezing cells inserted from an atmosphere side, with the cooling stage of a refrigeration machine, and in which parts of the cooling part and cooling stage of the refrigeration are included in a heat insulation space; and a second heat insulation container that includes a part of the first heat insulation container, a part of the cooling stage, and a cooled object thermally connected to the part of the cooling stage. The first heat insulation container can be mounted and removed to and from the inside of the second heat insulation container easily in atmosphere.

Description

The present invention relates to a cold storage container, and more particularly, to a simple refrigerator-integrated cold storage container in which a cooled object can be transferred by holding the cooled object such as cells in a frozen state. .

Conventionally, cells such as cattle and horse sperm, for example, are contained in, for example, plastic capsules, and the whole capsule is placed in, for example, liquid nitrogen, and the cells are instantly frozen and supplied in a supply center that supplies the cells. Stored for a long time in a freezer at -150 ° C or lower.

Development of a refrigerator-integrated type cold storage container in which a refrigerator and a cold storage container are integrated as a cold storage container capable of transporting a long distance while maintaining the capsule containing the frozen cells at a freezing temperature is in progress.

In particular, frozen cells will be damaged when the temperature rises during transportation, so the quality of the cells will change and it must be always cooled below the freezing temperature in the refrigerator cold, and has good cooling performance, There is also a need to provide a simple refrigerator-integrated cold storage container that is inexpensive to manufacture.

In a vacuum space of a vacuum heat insulating container composed of an outer cylinder container and an inner cylinder container, using a refrigerator in which a cooling part is thermally connected to the outer surface of the inner cylinder container bottom, pressurized helium gas is A capsule in which cold is generated by adiabatic expansion of a refrigerator as a working fluid, the bottom of the inner cylinder of the vacuum vessel is cooled to the cryogenic temperature by the cold, and a frozen cell is embedded in the inner bottom space of the inner cylinder Japanese Patent Laid-Open No. 2009-288234 (Patent Document 1) discloses a structure for inserting the air from the atmosphere side.

JP 2009-288234 A

However, in Patent Document 1, since the capsule is inserted from the atmosphere side, the capsule is in direct contact with the bottom of the inner cylinder container that is thermally integrated in the cooling stage of the refrigerator, and the contact portion is cooled most, When removing capsules to the atmosphere side, taking out long tweezers or dedicated tools for each capsule is cumbersome and the workability is poor, causing the capsule temperature to rise abnormally during removal. .

Further, in order to facilitate the take-out operation, when using a storage container storing a capsule group, it is inserted through the atmosphere opening of the inner cylinder container and is cooled by a refrigerator in order to store the storage container at the bottom. There is a problem that a thermal difference such as bolting between the cooling stage part and the storage container is not possible, and thus a temperature difference occurs between them, and the cooling temperature of the capsule group becomes considerably higher than that of the cooling stage part. there were.

Moreover, in patent document 1, in order to arrange | position a refrigerator in the heat insulation vacuum space of a vacuum vessel, heat insulation container structures, such as a vacuum vessel for exclusive use for refrigerator arrangement | positioning, are required, and there also existed a problem which manufacturing cost raised. . In addition, when the heat insulation performance deteriorates over time, the outer surface of the outer cylinder container is cooled, moisture in the atmosphere is condensed, and the lower part of the heat insulation container is also wetted.

The present invention has been made in view of the above circumstances, and an object of the present invention is to transport frozen cells at a freezing temperature or lower that can ensure the quality of the frozen cells by freezing the refrigerator, and is simple in manufacturing cost. The object is to provide a refrigerator-integrated cold storage container.

In order to achieve the above-described object, the present invention has a structure in which a storage container storing a capsule group inserted from the atmosphere side and a cooling stage of a refrigerator are thermally integrated.

In order to solve the above-described problems, the simple refrigerator-integrated cold storage container according to claim 1 is configured such that the end portion of the mounting support base for supporting and fixing the cooling stage portion of the refrigerator and the storage container is insulated for insertion. Arranged inside the container, thermally integrated with each other via a heat conductor, thermally integrated the storage container with the atmosphere side exposed end of the mounting support base, the storage container is cooled at another low temperature The heat insulating container has a structure that is inserted into the inner bottom portion of the inner tube container from the atmosphere opening port.

According to this simple refrigerator-integrated cold storage container, the storage container can be thermally integrated with the cooling stage portion of the refrigerator via the heat conductor and the mounting support, so that the storage container, the capsule to be incorporated, and the cooling stage can be integrated. The temperature difference can be reduced, and the temperature of the storage container can be stored in a heat insulating container for cold insulation having a heat insulating vacuum space, thus preventing the amount of heat intrusion from room temperature and ensuring the quality of frozen cells. It becomes possible to provide a simple refrigerator-integrated cold storage container that can be maintained at a low temperature for a long time.

In addition, the size of the heat insulating container for inserting the cooling stage part of the refrigerator is smaller than the heat insulating container for low-temperature cold insulation, so that the manufacturing cost can be reduced. Therefore, the manufacturing cost can be reduced, and a low-cost simple refrigerator-integrated cold storage container can be provided.

According to the simple refrigerator-integrated cold storage container according to claim 2, the cooling stage portion of the refrigerator and the room temperature portion thereof are arranged at the bottom portion of the heat insulating container for insertion, and the end of the mounting support base for supporting and fixing the storage container This is characterized in that it has a structure in which it is thermally integrated with the part via the shortest thermal conductor.

According to this configuration, the mounting support can be thermally integrated with the cooling stage portion of the refrigerator via a short heat conductor, so that the temperature difference in the heat conductor is further reduced, and the storage container and the built-in Since the temperature difference between the capsule to be cooled and the cooling stage can be further reduced, it is possible to provide a simple refrigerator-integrated cold storage container that can improve the performance of ensuring the quality of frozen cells.

The simple refrigerator-integrated cold storage container according to claim 3 is configured such that the heat insulating container for insertion is fixed upward in the direction of gravity, and the heat insulating container for cold storage is inserted into the heat insulating container for insertion from the top like a sheath when the capsule is taken in and out. It is a structure that can be attached and detached.

According to this structure, both hands are free when the capsule is inserted into and removed from the storage container, and the capsule can be taken in and out quickly and in a short time, and the temperature rise of the capsule can be minimized.

The simple refrigerator-integrated cold storage container according to claim 4 has a structure in which air cooled by the compressor portion of the refrigerator is circulated around the heat insulating container for insertion and the heat insulating container for cold storage.

According to this structure, even when the heat insulation performance of the heat insulation container for cold insulation and the heat insulation container for insertion deteriorates over time, moisture in the atmosphere is condensed on the surface where the heat insulation container for cold insulation and the heat insulation container for insertion are in contact with the atmosphere. It is possible to prevent the bottom of the simple refrigerator-integrated cold storage container from getting wet with moisture.

According to the present invention, a simple refrigerator-integrated cooling system that can maintain a cell quality using a refrigerator below the freezing temperature, can transport frozen cells by cooling, has excellent operability, and is inexpensive to manufacture. A container can be provided.

It is a block diagram of the simple refrigerator integrated cold storage container of 1st Example of this invention. It is a block diagram of the simple refrigerator integrated cold storage container of 2nd Example of this invention. It is a block diagram of the simple refrigerator integrated cold storage container of 3rd Example of this invention. It is a block diagram of the simple refrigerator integrated cold storage container of 4th Example of this invention.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent.

[Example 1]

The simple refrigerator integrated cold storage container of the first embodiment of the present invention will be described more specifically with reference to FIG. FIG. 1 shows a configuration diagram of a simple refrigerator-integrated cold storage container 1 according to a first embodiment of the present invention.

In the simple refrigerator-integrated cold storage container 1 of the present embodiment, for example, a cell preservation solution 2 of an object to be cooled containing cells such as cow and horse sperm is incorporated in a capsule 4 with a plastic lid 3, for example. Each capsule is immersed in, for example, liquid nitrogen in a supply center that supplies cells, and the cell preservation solution 2 is instantly frozen and stored in liquid nitrogen or in a freezer at −150 ° C. or lower for a long time.

A storage container 5 made of, for example, copper or aluminum having a high thermal conductivity capable of storing a plurality of capsules 4 has a capsule insertion hole 6, and a soft metal sheet (not shown) such as indium is formed on the upper portion thereof with a bolt 7. For example, it is thermally integrated with the exposed end portion of the atmosphere side of the mounting support base 8 made of copper having a high thermal conductivity.

The inside of the adiabatic expansion refrigeration unit 10 that generates cold by adiabatic expansion of the working gas of the refrigerator 9 is, for example, high-pressure helium gas that is adiabatic expansion working gas discharged from the working gas supply / exhaust hole 11 of the normal temperature part through the conduit 12. For example, an epoxy made of a non-magnetic and low thermal conductivity material, for example, a non-magnetic, low-heat-conducting material having a built-in cold-storage material that is formed by laminating a non-magnetic, disc-shaped uncovered copper wire woven copper mesh Coil spring for self-excited vibration that optimizes the relationship between the position of the regenerator 14 and the operating gas pressure of the regenerator 14 made of resin and the regenerator 14 that moves in the vertical direction on the paper surface due to the differential pressure between the operating gas pressures of adiabatic expansion. 15 and a low temperature gas communication hole 16 provided at a low temperature / normal temperature end of the regenerator 14 and a high and low pressure working gas flows in the regenerator 14 and a normal temperature gas communication hole 17.

The normal temperature part flange 18 of the adiabatic expansion refrigeration part 10 has a low thermal conductivity, for example, a normal temperature end flange 20 of a heat insulating container 19 for insertion made of stainless steel, for example, an airtight weld or an O-ring and a bolt (see FIG. (Not shown).

The adiabatic expansion refrigeration unit 10 is periodically supplied and exhausted with high and low pressure working gas through a conduit 12 from a room temperature compressor unit 21 of a refrigerator placed in the atmospheric space.

At the bottom of the heat insulating container 19 for insertion, the joint surface with the mounting support base 8 is airtightly integrated with, for example, silver solder, and the mounting support base 8 and a heat conductor 22 made of copper or aluminum having a high thermal conductivity. The joint surface is thermally integrated by bolt fastening (not shown) or welding, and the heat conductor 22 and the cooling stage 23 of the adiabatic expansion refrigeration unit 10 are flexible and have a large thermal conductivity. For example, the copper mesh 24 made of copper is thermally integrated by soldering or the like. The inside of the heat insulating container 19 for insertion is evacuated by an external vacuum pump 27 through, for example, a vacuum pipe 25 and a vacuum valve 26.

The heat insulation container 28 for cold insulation is composed of an outer cylinder container 29 and an inner cylinder container 30, and the upper part of the flange part 31 of the inner cylinder container 30 and the end of the outer cylinder container 29 are hermetically integrated by welding or the like.

The insertion heat insulation container 19 is inserted into the inner cylinder container 30 of the cold insulation heat insulation container 28, and then the male screw at the end of the inner cylinder container 30 is fitted with the female screw in the tightening nut 32 attached to the end of the inner cylinder container 30. It is supported and fixed by a rubber fastening ring 34 that is deformed in the radial direction by the fastening rotation of the portion 33.

The inside of the heat insulating container 28 is evacuated by an external vacuum pump 37 through a vacuum pipe 35 and a vacuum valve 36, for example. The room temperature compressor unit 21 is fixed and supported by a gantry 39 via a support 38, and the air cooling fan 40 and the battery 41 are directly fixed and supported by the gantry 39. The heat generated in the room temperature compressor unit 21 is cooled by air at room temperature by the air cooling fan 40. The room temperature compressor unit 21 and the air cooling fan 40 are operated by, for example, a direct current power source fed from a power cable 42.

The process of generating cold at the cooling stage 23 of the adiabatic expansion refrigeration unit 10 of the Stirling refrigerator of the refrigerator 9 will be described. The position of the regenerator 14 in FIG. 1 shows a state in which the working gas has expanded in the expansion cold generation space 43. Next, the coil spring 15 in a contracted state is expanded by a restoring force, and the regenerator moves downward in the drawing, so that the working gas having a pressure of 1 MPa, for example, in the expansion chill generation space 43 passes through the low temperature gas communication hole 16 into the regenerator 14. Heat is exchanged with the laminated copper mesh regenerator 13 and is heated to substantially normal temperature and discharged from the normal temperature gas communication hole 17 to the outside of the regenerator 14, and the adiabatic expansion refrigeration unit working gas supply / exhaust hole 11 and conduit 12. Is sucked into the normal temperature compressor section 21 in the suction process.

Next, when the room temperature compressor unit 21 proceeds to the compression process, the high-pressure working gas having a pressure of 2 MPa that has been compressed and removed by the air cooling fan 40 is stored in the cold through the conduit 12 and the air supply / exhaust hole 11 from the room temperature gas communication hole 17. The coil spring 15 is supplied into the vessel 14, cooled while exchanging heat with the regenerator material 13, and flows into the cold / cold generating space 43 that is narrowed from the low-temperature gas communication hole 16. At first, the high-temperature working gas in the regenerator 14 flows into the expansion cold generation space 43 and the coil spring 15 is contracted, that is, the room temperature compressor section is in a state where the tension cold generation space 43 is maximized. 21 is a suction step in a low pressure state, and the filled space filled with the high pressure working gas is adiabatically expanded from the high pressure to the low pressure. In this state, the state returns to the initial state. This process is repeated continuously, the cooling stage 23 is gradually cooled, and the storage container 5 is cooled to, for example, liquid nitrogen temperature in the steady state of the refrigerator 9.

Further, in the gap between the inner container 30 of the heat insulating container and the insulating container 19 for insertion, a cylindrical body 44 for heat insulation such as polystyrene foam is arranged, and convection such as air existing in the gap or heat conduction of gas. In this way, heat penetration from the atmosphere side is prevented from increasing.

The procedure for transporting frozen cells in this embodiment is to operate the refrigerator 9 of a simple refrigerator-integrated cold storage container in advance and cool the temperature of the empty storage container 5 to a predetermined temperature that can ensure the quality of the frozen cells. To do. Next, preparation for taking out the capsule 4 having the frozen cell solution 2 separately stored in liquid nitrogen from the liquid nitrogen is completed, and the insertion heat insulating container 19 is kept in the atmosphere while the refrigerator 9 is operated. The capsule 4 is immediately inserted into the storage container 5 after being taken out, and immediately after that, the heat insulating container 19 for insertion is inserted into the inner cylinder container 30, tightened with a tightening nut 32, and airtight with the heat insulating container 19 for insertion with a restraining ring 34. It is fixed and mechanically supported and fixed to the atmosphere side flange 20 of the inner cylinder container 30 with a bolt (not shown) or the like.

During transportation, the refrigerator 21 and the fan 40 are operated by the power source of the battery 41 to keep the temperature of the storage container 5 at a predetermined temperature. Since the heat insulating container 28 is insulated by vacuum, the heat intrusion into the storage container 5 due to the radiant heat from the atmosphere side is very small, and the heat intrusion amount due to the conduction heat transfer from the atmosphere side of the inner cylinder container 30 is also small. The inner cylinder container 30 can be kept low by increasing the depth of the inner cylinder container 30 and by reducing the cylindrical wall thickness of the inner cylinder container 30 to about 0.5 mm. The storage container 5 can be cooled.

Further, when carrying out the transportation work, the vacuum valves 26 and 36 are closed from the vacuum pumps 27 and 37 to separate the simple refrigerator-integrated cold storage container 1, and after transporting to the transportation destination, the refrigerator 21 and the fan 40. The heat insulating container 19 for insertion is pulled out from the inner cylinder container 30 of the heat insulating container 28 for cooling, the capsule 4 is taken out from the storage container 5, and is quickly transferred to the liquid nitrogen in the destination liquid nitrogen tank for transportation. Exit.

Further, the inner cylinder container 30 is moved from the lower side so that the heat insulating container 19 for insertion is inserted into the inner cylinder container 30 opened to the atmosphere, the tightening nut 32 is tightened, and the inner ring container 30 is tightened by the tightening ring 34. After the inside is sealed with the atmosphere, the inner container 30 is connected to the atmosphere in order to avoid the risk that the residual gas in the inner container 30 will thermally expand due to troubles such as the shutdown of the refrigerator. When the pressure rises to a predetermined pressure, the automatic pressure adjustment valve 47 is opened and the gas is released to the atmosphere side, and the inside of the inner cylinder container 30 is provided. Reduce the pressure.

In the simple refrigerator-integrated cold storage container 1 of the present embodiment, when the capsule 4 in which the frozen cells are stored is cooled and transported by the refrigerator 9, the capsule is below a predetermined temperature that can ensure the quality of the frozen cells by the refrigerator 9. 4 is exposed to the atmosphere, and can be cooled without any obstacles that obstruct the operation of storing and taking out the capsules 4, so a liquid nitrogen tank or a low-temperature freezer in which the capsules 4 are always kept cool. Can be taken out from the atmosphere and stored in the storage container 5 for transport in a short time, and can be taken out in a short time, so that the temperature rise can be prevented even when the storage container 5 is exposed to the atmosphere. The capsule 4 can be cooled to a predetermined temperature or lower, and there is an effect that it is possible to provide the simple refrigerator-integrated cold storage container 1 that can ensure the quality of the frozen cells.

Further, since the heat insulating container 19 for insertion can be made smaller than the heat insulating container 28 for cold insulation, and the heat insulating container 28 for cold insulation has a simple vacuum container structure, the manufacturing cost of the vacuum container can be reduced, and the low-cost simple refrigerator-integrated cold insulation can be achieved. There exists an effect which can provide the container 1. FIG.

Further, as the cold insulation heat insulating container 28, a commercially available metal thermos can be diverted, whereby the manufacturing cost of the cold insulation heat insulating container 28 can be greatly reduced, and the low-cost simple refrigerator-integrated cold storage container 1 can be provided. effective. Further, as the cold insulation heat insulation container 28, the external appearance and the interior shape of the cold insulation heat insulation container 28 are made the same with a heat insulating material such as styrene foam instead of the vacuum insulation, and the flange portion 31 and the tightening nut 32 are made of, for example, plastic. If the heat insulating container bonded and bonded to the polystyrene foam is constructed, there is an effect that it is possible to provide the low-cost and lightweight simple refrigerator integrated type cold insulating container 1.

[Example 2]

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a configuration diagram of the simple refrigerator integrated cold storage container of the present invention.

In the simple refrigerator-integrated cold storage container 1 of the second embodiment, the heat conductor 22 is eliminated, and the cooling stage 23 and the mounting support 8 of the adiabatic expansion refrigeration unit 10 of the refrigerator 9 are separated from the copper mesh 24. It is thermally integrated by soldering or the like, and is disposed at the bottom of the heat insulating container for insertion including the normal temperature portion of the adiabatic expansion refrigeration unit 10. The piping 12 through which the working gas flows and the air supply / exhaust holes 11 of the adiabatic expansion refrigeration unit 10 Is conducted through a conduit 48 disposed in the heat insulating space 50.

The adiabatic expansion refrigeration unit 10 is a plastic spacer 49 having a small thermal conductivity, and is supported in the radial direction from the inner surface of the heat insulating container 19 for insertion.

Moreover, in the heat insulation space 50 of the heat insulation container 19 for insertion, the lamination | stacking heat insulating material 51 is wound around the heat insulation expansion refrigerating part 10, and the penetration | invasion of the radiant heat to a low-temperature part is prevented.

According to this configuration, since the adiabatic expansion refrigeration unit 10 is disposed in the heat insulation space 50 of the heat insulating container 19 for insertion, the cooling stage 23 can be brought close to the mounting support base 8 and the mounting support base 8 can be connected to the refrigerator. Since it can be thermally integrated with the cooling stage portion 23 via a short copper mesh 24, the thermal resistance by the heat conductor can be further reduced, the temperature of the storage container 5 can be further reduced, and the quality of the frozen cells can be ensured. It becomes possible to provide a simple refrigerator integrated cold storage container that can further improve the above.

In addition, since the room temperature pipe 48 is accommodated in the upper part of the space of the heat insulation space 50, there is no need for heat insulation, and heat insulation such as polystyrene foam for preventing heat from entering the cooling stage 23 by convection of residual gas instead of vacuum heat insulation. By filling the material in the upper part of the space of the heat insulating space 50, heat insulation can be performed without evacuation, so there is no need to prepare a vacuum pump, and there is an effect that the low-cost simple refrigerator integrated cold storage container 1 can be provided.

[Example 3]

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a configuration diagram of a simple refrigerator integrated cold storage container of the present invention. The simple refrigerator-integrated cold storage container 1 of the third embodiment is configured such that the heat insulating container 19 for insertion is fixed upward on the lower side of the paper, and the heat insulating container 28 is inserted into the heat insulating container for insertion like a sheath when the capsule is taken in and out. It is a structure that can be attached to and detached from the container 19 from above.

In this configuration, since the cold insulation heat insulating container 28 can be attached to and detached from the insertion heat insulation container 19 like a sheath from the top, and the bottom of the removed cold insulation heat insulation container 28 is at a normal temperature downward, the removed cold insulation heat insulation container For example, if the container 28 is placed on a floor or desk with the flange down, and further placed on a rubber or gel mat, the air tightness can be maintained on the flange surface. It is possible to minimize frost formation on the internal low temperature part.

Therefore, according to the present embodiment, both hands are free when the capsule 4 is inserted into and removed from the storage container 5, and the capsule 4 can be taken in and out more quickly. Further, by covering the storage container 5 with a convection prevention cover 52 made of, for example, sponge polyimide or styrene foam for preventing convection of the atmosphere after the capsule 4 is stored, the temperature of the storage container 5 exposed to the atmosphere is covered. Then, it is possible to quickly mount the cold insulation heat insulating container 28 from above, so that air can be minimized and a large amount of ice can be prevented from icing.

In addition, since the convection prevention cover made of polyimide has a 52 spongy shape, about 97% of the volume of the main body is air, the heat capacity is small, and it can be cooled to the same temperature with the heat capacity of several degrees Centigrade of the storage container 5 and Since the temperature rise can be cooled in a short time by the coldness of the refrigerator 9, the temperature of the capsule 4 does not rise.

Therefore, in this embodiment, since the storage container 5 is indirectly supported by the gantry 39, it is not necessary to hold it by hand, and it is possible to carry out the capsule 4 with both hands of the attachment / detachment of the capsule 4 in a shorter time. There is an effect that the temperature rise of the capsule 4 can be minimized.

[Example 4]

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a configuration diagram of the simple refrigerator integrated cold storage container of the present invention. The simple refrigerator-integrated cold storage container 1 of the fourth embodiment is provided with an exhaust port 53 of an air cooling fan 40 on a wall of a mount 39, covers a cold insulation heat insulating container 28 and the like with a plastic or polystyrene wall 54, and compresses at room temperature. The air whose temperature has risen beyond the atmospheric temperature by cooling the machine unit 21 is guided from the exhaust port 53 to the space 55 as shown by the arrows in the figure, and from the lower exhaust port 56 to the outside of the simple refrigerator-integrated cold storage container 1. It is a structure that is discharged.

In this configuration, even when the heat insulation performance of the heat insulation container 2 for cold insulation and the heat insulation container 19 for insertion deteriorates over time and the surface of each container cools down from the temperature before deterioration, air higher than the atmospheric temperature is blown into the space 55. Therefore, in this embodiment, it is possible to prevent moisture in the atmosphere from condensing on the surface where the cold insulation heat insulating container 2 and the heat insulating container 19 for insertion are in contact with the air, and to prevent the bottom portion of the mount 39 from getting wet with water. There is.

In the above embodiment, the case where the object to be cooled thermally integrated with the mounting support 8 is a capsule containing the storage container 5 and the frozen cells incorporated therein, but the object to be cooled is a superconducting bulk. Even if it is a body, a cryogenic object for cryotherapy, etc., the same effect is produced as a cooling and holding effect for holding at a predetermined temperature.

Further, in the above-described embodiment, the case where the Stirling type refrigerator in which the regenerator moves during operation has been described as the refrigerator. However, the Gifford McMahon type refrigerator and the Solvay type refrigerator which are other types of refrigerators Even if a pulse tube refrigerator is applied, the same effect is produced.

As described above, according to the simple refrigerator-integrated cold storage container according to the present invention, the frozen cells can be cooled and transported at a temperature below the freezing temperature at which the quality of the cells can be ensured by using the refrigerator, the operability is excellent, and the manufacturing cost is low. In addition, there is an effect that a simple refrigerator integrated cold storage container can be provided.

DESCRIPTION OF SYMBOLS 1 ... Simple refrigerator integrated cold storage container, 2 ... Cell preservation solution, 4 ... Capsule, 5 ... Storage container, 8 ... Mounting support, 9 ... Refrigerator, 10 ... Adiabatic expansion freezing part, 12 ... Conduit, 13 ... Cold storage 14 ... Regenerator, 19 ... Insertion heat insulation container, 21 ... Room temperature compressor part, 22 ... Heat conductor, 23 ... Cooling stage, 24 ... Copper net, 28 ... Heat insulation container for cold insulation, 29 ... Outer cylinder container, 30 ... inner cylinder container, 32 ... clamping nut, 34 ... clamping ring, 40 ... air cooling fan, 41 ... capacitor, 43 ... expansion / cold generation space

Claims (4)

In the refrigerator-integrated cold storage container that cools the object to be cooled by the coldness of the refrigerator,
A cooling unit of the refrigerator, and a cooling stage thermally integrated with the cooling unit,
A first heat insulating container including a cooling unit of the refrigerator and a part of the cooling stage in a heat insulating space;
A second body having a cooled object holding space including a part of the first heat insulating container, a part of the cooling stage, and the cooled object thermally connected to a part of the cooling stage. Have an insulated container,
A refrigerator-integrated cold storage container characterized in that the first heat insulating container can be attached to and detached from the inside of the second heat insulating container in the atmosphere. The cooling unit of the refrigerator is arranged on the cooling stage side of the heat insulation space,
2. The refrigerator integrated cold storage container according to claim 1, wherein a pipe for working fluid to the refrigerator is arranged in the heat insulating space. The first heat insulating container that supports the object to be cooled thermally connected to the cooling stage is fixedly held on a support base,
The refrigerator-integrated cold storage container according to claim 1 or 2, wherein the second heat insulating container can be attached to and detached from the first heat insulating container. In contact with the atmosphere of the first heat insulation container and the second heat insulation container, and at a temperature lower than the atmospheric temperature,
4. The refrigerator-integrated cold storage container according to claim 1, wherein a flow path is provided so that air heated by exhaust heat of the refrigerator is in contact therewith.