JP6601560B2 - Cooler - Google Patents

Description

  The present invention relates to a cold insulator.

  In the case of pharmaceutical products, there are products that need to maintain the temperature within an appropriate temperature range until the final consumption point. For example, in the case of a vaccine preparation, 2 ° C. to 8 ° C. may be an appropriate temperature range. In such a vaccine formulation, it is necessary to avoid a temperature higher than the proper temperature range or freezing. When the temperature is outside the proper temperature range, vaccine microorganisms are killed, and the vaccine preparation must be discarded. In order to reduce the disposal rate of vaccine preparations, it is important to ensure that it is within the proper temperature range.

  For example, a vaccine preparation can be transported to a village in a developing country in a portable cold storage container when a vaccination business trip service, that is, an outreach service is performed.

  The portable medical storage (1) disclosed in Patent Document 1 below includes a heat insulating container (2), a device storage (4) containing a Stirling refrigerator (3), and a lid (5). .

Japanese Unexamined Patent Publication No. 2006-64249

  Vaccine preparations are contained in small containers such as ampoules, vials, and prefilled syringes. Assuming that a large number of vaccine preparations contained in such small containers are stored and stored in the medical storage (1) of Patent Document 1, there are the following problems.

  First, when there are many items to be stored, the circulation of cool air in the storage is hindered, resulting in temperature unevenness. The temperature of the vaccine preparation at a position where cold air is difficult to reach exceeds the upper limit of the appropriate temperature range, or the temperature of the vaccine preparation at a position where the air is exposed to excessive cold tends to fall below the lower limit of the appropriate temperature range.

  Secondly, each time the vaccine preparations are taken out from the medical storage (1) one by one, the lid (5) is opened and the cool air in the storage leaks, so that the temperature in the storage is likely to fluctuate. As a result, the temperature of the stored vaccine preparation tends to be outside the appropriate temperature range.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cold-retaining device that is advantageous in equalizing the temperature of each part in the storage.

The cold-reserving device of the present invention is a cold-reserving device that refrigerates an object, and includes a storage rack for storing the object, a main body that stores the storage rack, and a cooling unit that cools the inside of the storage, The storage rack includes an outer shell, at least one partition that divides a space inside the outer shell, and an inner wall that at least partially covers the inner surface of the outer shell , At least one partition has a higher thermal conductivity than the outer shell, the outer shell has a larger specific heat than the at least one partition, and the inner wall has a higher thermal conductivity than the outer shell. .
The cold-reserving device of the present invention is a cold-reserving device that refrigerates an object, and includes a storage rack for storing the object, a main body that stores the storage rack, and a cooling means that cools the interior of the storage, The rack is at least partially removable from the main body, and the storage rack includes an outer shell and at least one partition that divides a space inside the outer shell, and the at least one partition is higher than the outer shell. Having a thermal conductivity, the outer shell has a larger specific heat than the at least one partition, the storage rack comprises a thermal connector for thermally connecting at least one partition to the cooling means, the thermal connector is The thermal connector has a contact surface that contacts a cold part of the cooling means , the contact surface is not covered by the shell, and the thermal connector has at least one With two partitions Are connected, thermally connectors are separable der shall from a low temperature portion of the cooling means.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the cool storage apparatus advantageous in equalizing the temperature of each part in a store | warehouse | chamber.

1 is a schematic perspective view showing a cold insulation device of Embodiment 1. FIG. 3 is a schematic perspective view of a storage rack included in the cold insulation device of Embodiment 1. FIG. It is a disassembled perspective view of the 1st partition with which a storage rack is provided, and a coating layer. It is a disassembled perspective view of the 1st partition with which a storage rack is provided, and a coating layer. It is sectional drawing of the location where a 1st partition and a 2nd partition cross. It is a top view of the 1st partition which can be removed. It is sectional drawing of a storage rack. FIG. 2 is a schematic cross-sectional view showing the cold insulation device of the first embodiment. It is a typical bottom view of the cover part with which the cold insulation apparatus of Embodiment 1 is provided. 3 is a flowchart showing a control routine in the first embodiment. It is a typical perspective view of the storage rack with which the cold insulation apparatus of Embodiment 2 is provided. FIG. 6 is a schematic exploded perspective view showing a cold insulation device of a third embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. Elements common to the drawings are denoted by the same reference numerals, and redundant description is simplified or omitted. The present disclosure may include any combination of configurations that can be combined among the configurations described in the following embodiments.

Embodiment 1 FIG.
FIG. 1 is a schematic perspective view showing a cold-retaining device 1A according to the first embodiment. As shown in FIG. 1, the cold insulator 1 </ b> A includes a storage rack 2, a main body 3, and a lid 4. The cold insulator 1A may be portable. In the following description, a description will be given based on a posture in which the cold insulator 1A is placed on a horizontal plane. In the following description, for the sake of convenience, the front side in FIG. 1 is defined as the front surface of the cold insulator 1A, and the back is defined as the rear surface of the cold insulator 1A.

  The main body 3 has an upper surface opening. The lid 4 can block the upper surface opening of the main body 3. The lid 4 is detachable from the main body 3. FIG. 1 shows a state where the lid 4 is removed from the main body 3. The lid 4 may be connected to the main body 3 so as to be opened and closed by, for example, a hinge.

  The cold insulator 1A refrigerates a medicine such as a vaccine preparation. In the case of a vaccine preparation, it is necessary to maintain the temperature in the range of 2 ° C to 8 ° C, for example.

  A thing refrigerated by the cold insulation device 1A, that is, a refrigerated product may be a product other than a pharmaceutical product, for example, a chemical, a blood bag, a frozen food, a fresh food, a marine product, or the like.

  The storage rack 2 has a plurality of cells or small rooms for storing refrigerated products. In the present embodiment, the following effects can be obtained. Since the refrigerated products can be separately put into the plurality of cells of the storage rack 2, the refrigerated products can be organized and stored.

  The main body 3 has a box shape. The main body 3 has a storage chamber in which the storage rack 2 can be stored. The main body 3 has a heat insulating property to insulate the storage rack 2 from the outside air. The main body 3 may include a heat insulating material (not shown). The heat insulating material may be at least one of, for example, a vacuum heat insulating material, foamed plastic, and glass wool. The storage rack 2 can be taken out of the main body 3 at least partially. The main body 3 only needs to accommodate at least one storage rack 2. In the present embodiment, the main body 3 can accommodate three storage racks 2. FIG. 1 shows a state in which one of the three storage racks 2 is partially taken out of the main body 3.

  In the present embodiment, since the refrigerated product is stored in the cell of the storage rack 2, the cold air hardly leaks when the lid 4 is opened. For this reason, the temperature rise of a refrigerated product can be reduced. By partially taking out the storage rack 2 to the outside of the main body 3, refrigerated goods can be taken in and out. By pulling out only the necessary portion of the storage rack 2, the leakage of cold air in the storage rack 2 can be reduced. Since the refrigerated goods can be arranged and put into the storage rack 2, it is easy to find the refrigerated goods to be taken out. Therefore, the time during which the lid 4 is opened can be shortened, so that the leakage of cold air can be reduced.

  In the present embodiment, the storage rack 2 can be drawn upward from the upper surface opening of the main body 3. According to such a configuration, when the storage rack 2 is pulled out, cold air having a high specific gravity is difficult to leak. For example, the storage rack 2 may be pulled out from the main body 3 in the horizontal direction, that is, in the horizontal direction.

  The lid part 4 is provided with a cooling means for cooling the inside of the warehouse. As will be described later, the cooling means in the present embodiment includes a thermoelectric element that performs thermoelectric conversion.

  If it is this Embodiment, the following effects are acquired by arrange | positioning the cooling means to the cover part 4. FIG. Cooling air having a high specific gravity descends from the lid 4 to the lower part of the interior, which is advantageous for equalizing the interior temperature.

  FIG. 2 is a schematic perspective view of the storage rack 2 provided in the cold insulator 1A of the first embodiment. As shown in FIG. 2, the storage rack 2 includes an outer shell 5, a first partition 6, and a second partition 7. The outer shell 5 has a rectangular frame shape. The first partition 6 and the second partition 7 partition the space inside the outer shell 5 into a plurality of cells. The first partition 6 and the second partition 7 at least partially form a wall of each cell of the storage rack 2. The first partition 6 and the second partition 7 intersect each other. The first partition 6 and the second partition 7 are orthogonal to each other. The first partition 6 extends in the horizontal direction. The second partition 7 extends in the vertical direction. The first partition 6 and the second partition 7 may be plate-shaped.

  Each cell of the storage rack 2 has an opening in the front of the storage rack 2. The storage rack 2 may include a back panel that covers the back surface of the storage rack 2. The outer shell 5 may cover the outer surface of the back panel. The back panel may be formed as a part of the outer shell 5.

  The first partition 6 and the second partition 7 have a higher thermal conductivity than the outer shell 5. The first partition 6 and the second partition 7 may be made of, for example, aluminum or an aluminum alloy. The 1st partition 6 and the 2nd partition 7 may be comprised with other metals, for example, stainless steel, copper, copper alloy, etc. The outer shell 5 has a larger specific heat than the first partition 6 and the second partition 7. The outer shell 5 may be made of a resin material, for example. The resin material may be, for example, at least one of polyolefin, polyester, and fluorine resin. The specific heat corresponds to the heat capacity per mass.

  When the storage rack 2 is pulled out from the main body 3, the surface of the outer shell 5 is exposed to the outside air. In the present embodiment, the outer shell 5 is made of a material having a specific heat larger than that of the first partition 6 and the second partition 7, thereby reducing the temperature drop of the outer shell 5 when the surface of the outer shell 5 is exposed to the outside air. it can. For this reason, the temperature rise of a refrigerated product can be reduced.

  If it is this Embodiment, the following effects are acquired by having comprised the 1st partition 6 and the 2nd partition 7 with the material whose heat conductivity is higher than the outer shell 5. FIG. The heat rapidly moves through the first partition 6 and the second partition 7, so that the temperature of the wall forming each cell of the storage rack 2 can be equalized. As a result, the temperature of the plurality of cells of the storage rack 2 can be equalized. Therefore, the temperature of the several refrigerated goods accommodated in the storage rack 2 can be equalized. This is advantageous in maintaining the temperature of a refrigerated product such as a vaccine preparation in an appropriate temperature range.

  Only one of the first partition 6 and the second partition 7 may be made of a material having a higher thermal conductivity than the outer shell 5. Only some of the first partitions 6 among the plurality of first partitions 6 may be made of a material having a higher thermal conductivity than the outer shell 5. Only some of the second partitions 7 among the plurality of second partitions 7 may be made of a material having a higher thermal conductivity than the outer shell 5. Even in those cases, an effect similar to the above effect can be obtained.

  3 and 4 are exploded perspective views of the first partition 6 and the covering layer 8 provided in the storage rack 2. The storage rack 2 may include a coating layer 8 that at least partially covers the surface of the first partition 6. The covering layer 8 has a larger specific heat than the first partition 6. The covering layer 8 may be made of a resin material, for example. The resin material may be, for example, at least one of polyolefin, polyester, and fluorine resin. The covering layer 8 may be made of the same material as the outer shell 5. FIG. 3 shows an example in which only one surface of the first partition 6 is covered with the coating layer 8. FIG. 4 shows an example in which both surfaces of the first partition 6 are covered with the coating layer 8. The first partition 6 and the coating layer 8 may be joined by, for example, an anchor effect or an adhesive. The fine porous or dimple may be formed on the metal surface of the first partition 6 and the resin of the coating layer 8 may be molded on the metal surface to integrate them.

  If it is this Embodiment, the following effects are acquired by providing the coating layer 8 comprised with the material whose specific heat is larger than the 1st partition 6. FIG. Since it can suppress that the low temperature 1st partition 6 touches a refrigerated product directly, it can suppress reliably that the temperature of the contact part to the 1st partition 6 of a refrigerated product becomes low too much. Moreover, when the storage rack 2 is pulled out from the main body 3, it is possible to suppress the first partition 6 from rising in temperature due to the heat of the outside air.

  You may provide the coating layer 8 which coat | covers the surface of the 2nd partition 7 at least partially. By providing the covering layer 8 for the second partition 7, an effect similar to the above effect is obtained. The covering layer 8 may be provided only on one of the first partition 6 and the second partition 7.

  FIG. 5 is a cross-sectional view of a location where the first partition 6 and the second partition 7 intersect. In the example shown in FIG. Both surfaces of the first partition 6 are covered with the coating layer 8. Both surfaces of the second partition 7 are covered with the coating layer 8. The first partition 6 and the second partition 7 are thermally connected. In the present specification, “thermally connected” means, for example, among thermally conductive grease, thermally conductive sheet, thermally conductive adhesive, thermally conductive double-sided adhesive tape, metal, ceramics, and heat pipe. It shall be connected to be able to transfer heat through at least one, or directly contacted or integrated.

  In the example shown in FIG. 5, the second partition 7 is inserted into the slit formed in the first partition 6, and the inner surface of the slit of the first partition 6 is in contact with the surface of the second partition 7. Both are thermally connected.

  If it is this Embodiment, the following effects are acquired by the 1st partition 6 and the 2nd partition 7 being thermally connected. By transferring heat between the first partition 6 and the second partition 7, the temperature of the wall forming each cell of the storage rack 2 can be further equalized. As a result, the temperatures of the plurality of cells of the storage rack 2 can be further equalized.

  The storage rack 2 may include a removable partition. In the present embodiment, some of the first partitions 6 among the plurality of first partitions 6 included in the storage rack 2 are removable. FIG. 6 is a plan view of the removable first partition 6. FIG. 7 is a cross-sectional view of the storage rack 2. As shown in FIG. 7, the storage rack 2 of the present embodiment includes three first partitions 6 of an upper stage, a middle stage, and a lower stage. Of these, the upper and lower first partitions 6 are removable. The middle first partition 6 is a fixed partition that cannot be removed. As shown in FIG. 6, a slit 9 is formed in the removable first partition 6. In a state where the first partition 6 is attached to the storage rack 2, the second partition 7 is inserted into the slit 9. The storage rack 2 may include holding means for holding the removable first partition 6. The holding means may use snap-fit or press-fitting. For example, the holding means may engage the claw portion 10 in FIG. 6 with the second partition 7. The claw portion 10 may be formed integrally with the covering layer 8 joined to the first partition 6. When the coating layer 8 is made of a resin material, the claw portion 10 can be easily molded together with the coating layer 8.

  If it is this Embodiment, it will become possible to change the magnitude | size of the cell of the storage rack 2 according to the magnitude | size of the refrigeration goods to store by providing the 1st partition 6 which can be removed. At least some of the second partitions 7 among the plurality of second partitions 7 may be removable. Even in that case, a similar effect can be obtained.

  The storage rack 2 shown in FIG. 7 includes inner walls 11, 12, 13 that at least partially cover the inner surface of the outer shell 5. The inner walls 11, 12, 13 have a higher thermal conductivity than the outer shell 5. The inner walls 11, 12, 13 may be made of, for example, aluminum or an aluminum alloy. The inner walls 11, 12, and 13 may be made of other metals such as stainless steel, copper, and copper alloys. The inner walls 11, 12, 13 may be made of the same material as the first partition 6 and the second partition 7. The inner surfaces of the inner walls 11, 12, 13 may be at least partially covered with the coating layer 8.

  In the case of the storage rack 2 shown in FIG. 7, the following effects can be obtained by including the inner walls 11, 12, and 13 made of a material having higher thermal conductivity than the outer shell 5. Since the heat is quickly conducted through the inner walls 11, 12, and 13, the temperature of the wall forming each cell of the storage rack 2 can be made more equal. As a result, the temperature of the plurality of cells of the storage rack 2 can be made more equal.

  In the example shown in FIG. The inner wall 11 covers the inner surface of the outer shell 5 on the side surface of the storage rack 2. The inner wall 12 covers the inner surface of the outer shell 5 on the upper surface of the storage rack 2. The inner wall 13 covers the inner surface of the outer shell 5 on the bottom surface of the storage rack 2. In the example illustrated in FIG. 7, the outer shell 5 covers the upper surface, the side surface, and the bottom surface of the storage rack 2. Instead of such an example, there may be a region that is not covered with the outer shell 5 in a part of the side surface, the upper surface, and the bottom surface of the storage rack 2.

  The storage rack 2 includes a thermal connector 14 for thermally connecting the first partition 6 and the second partition 7 to the cooling means. The thermal connector 14 has a higher thermal conductivity than the outer shell 5. The thermal connector 14 may be made of, for example, aluminum or an aluminum alloy. The thermal connector 14 may be made of other metals such as stainless steel, copper, copper alloy, and the like. The thermal connector 14 may be made of the same material as the first partition 6 and the second partition 7.

  The thermal connector 14 includes a contact surface that protrudes above the position of the outer shell 5 on the upper surface of the storage rack 2. The thermal connector 14 is cooled by the contact surface of the thermal connector 14 coming into contact with the low temperature portion of the cooling means.

  The thermal connector 14 is thermally connected to the inner wall 12. The thermal connector 14 and the inner wall 12 may be integrated.

  The upper end of the second partition 7 is thermally connected to the inner wall 12. The second partition 7 and the inner wall 12 may be integrated. The second partition 7 is thermally connected to the cooling means via the thermal connector 14 and the inner wall 12. The second partition 7 is cooled by the cooling means via the thermal connector 14 and the inner wall 12.

  As described above, the first partition 6 is thermally connected to the second partition 7. At least a part of the plurality of first partitions 6 and at least a part of the plurality of second partitions 7 may be integrated. The first partition 6 is thermally connected to the cooling means via the thermal connector 14, the inner wall 12 and the second partition 7. The first partition 6 is cooled by the cooling means via the thermal connector 14, the inner wall 12 and the second partition 7.

  In the present embodiment, each cell of the storage rack 2 formed by the first partition 6 and the second partition 7 is obtained by thermally connecting the first partition 6 and the second partition 7 to the cooling means. Cooling more efficiently and evenly.

  If it is this Embodiment, the 1st partition 6 and the 2nd partition 7 are thermally connected to a cooling means via the thermal connector 14 comprised with the material whose heat conductivity is higher than the outer shell 5. The first partition 6 and the second partition 7 can be cooled more efficiently and evenly. The end of the first partition 6 may be thermally connected to the inner wall 11. The fixed first partition 6 that cannot be removed and the inner wall 11 may be integrated. The lower end of the second partition 7 may be thermally connected to the inner wall 13. The second partition 7 and the inner wall 13 may be integrated.

  A plurality of holding portions 15 for holding the removable first partition 6 are provided on the inner surface of the inner wall 11. The fixing position of the first partition 6 can be changed by selecting a position where the removable first partition 6 is attached from the plurality of holding portions 15. The structure of the holding part 15 is not particularly limited. For example, the holding part 15 may have a recess in which the end of the first partition 6 is fitted.

  FIG. 8 is a schematic cross-sectional view showing the cold insulating device 1A of the first embodiment. FIG. 8 shows a state where the lid 4 is removed from the main body 3. The storage rack 2 shown in FIG. 8 shows a state where the upper and lower first partitions 6 of the storage rack 2 shown in FIG. 7 are removed.

  As shown in FIG. 8, the cooling means in the present embodiment includes a Peltier element 16 installed on the lid 4. The Peltier element 16 is an example of a thermoelectric element. The Peltier element 16 includes a low temperature part 20 and a high temperature part 21. When the Peltier element 16 is energized, heat is transported from the low temperature portion 20, that is, the heat absorption side, to the high temperature portion 21, that is, the heat generation side. The lid 4 is further provided with a heat sink 17, a blower 18, and an electrical connector 19.

  In a state where the lid portion 4 is attached to the main body 3, that is, in a state where the lid portion 4 is closed, the thermal connector 14 of the storage rack 2 is thermally connected to the low temperature portion 20 of the Peltier element 16. At this time, the thermal connector 14 may be in direct contact with the low temperature part 20, or the thermal connector 14 may be joined to the low temperature part 20 via a heat conductive material such as a heat conductive sheet. .

  In the present embodiment, the low temperature portion 20 is in the recess 22 formed on the lower surface of the lid portion 4. The thermal connector 14 is thermally connected to the low temperature part 20 by inserting the thermal connector 14 into the recess 22. With such a configuration, the thermal connector 14 can be reliably connected to the low temperature portion 20.

  The heat sink 17 is thermally connected to the high temperature portion 21 of the Peltier element 16. The heat sink 17 dissipates heat from the high temperature portion 21 of the Peltier element 16 to the outside air. The heat sink 17 includes heat radiating fins for increasing the surface area. The blower 18 blows outside air to the heat dissipating fins of the heat sink 17. In FIG. 8, the outside air flows in the horizontal direction from the blower 18 toward the heat sink 17 as indicated by a straight line with an arrow. When the blower 18 blows outside air, heat dissipation from the heat sink 17 can be promoted. The electrical connector 19 is electrically connected to the Peltier element 16. Power is supplied from the electrical connector 19 to the Peltier element 16.

  The main body 3 is provided with a circuit board 23, a first temperature sensor 24, a second temperature sensor 25, a third temperature sensor 26, and an electrical connector 27. When the lid 4 is attached to the main body 3, that is, when the lid 4 is closed, the electrical connector 19 of the lid 4 and the electrical connector 27 of the main body 3 are electrically connected. Electricity can be supplied from the circuit board 23 of the main body 3 to the Peltier element 16 and the blower 18 of the lid 4 via the electrical connectors 19 and 27. In the present embodiment, the convex portion formed by the electrical connector 27 is inserted into the concave portion formed by the electrical connector 19 so that the two are electrically connected.

  The circuit board 23 includes a power supply circuit and a processing circuit. The power supply circuit of the circuit board 23 supplies power to each part of the cold insulator 1 </ b> A including the Peltier element 16 and the blower 18. A power cord 28 is connected to the main body 3. The power cord 28 can be connected to an external power source (not shown). The power supply circuit of the circuit board 23 converts the power supplied from the external power supply via the power cord 28 and supplies the power to each part of the cold insulator 1A. Not only in such a configuration, the power of a storage battery (not shown) provided in the main body 3 may be supplied to each part of the cold insulator 1A. In that case, the storage battery may be rechargeable by connecting the power cord 28 to an external power source.

  The 1st temperature sensor 24, the 2nd temperature sensor 25, and the 3rd temperature sensor 26 are examples of the temperature detection means which detects the internal temperature of several different positions. In the present embodiment, an example in which the first temperature sensor 24, the second temperature sensor 25, and the third temperature sensor 26 are provided will be described, but it goes without saying that the number of temperature sensors is not limited to this.

  The processing circuit of the circuit board 23 corresponds to control means or a control device provided in the cold insulator 1A. The control device controls the cooling means according to the internal temperature detected by the temperature detecting means. In the present embodiment, the control device controls energization to the Peltier element 16. The control device may control the operation of the blower 18.

  In the present embodiment, the control device controls energization to the Peltier element 16 so that the internal temperature is within the appropriate temperature range. The appropriate temperature range when the refrigerated product is a vaccine preparation may be, for example, a range of 2 ° C to 8 ° C. The appropriate temperature range may be changeable. For example, an appropriate temperature range may be set by a user or the like operating an operation panel (not shown) provided in the cold insulator 1A.

  If it is this Embodiment, it will become advantageous when controlling each part in the store | warehouse | chamber of 1 A of cold storage apparatuses to equal temperature by controlling a cooling means according to the store | warehouse | chamber temperature of several different positions. In other words, it is advantageous for equalizing the temperatures of a plurality of refrigerated products stored in the storage rack 2. Therefore, it is advantageous in maintaining the temperature of a refrigerated product such as a vaccine preparation in an appropriate temperature range.

  The first temperature sensor 24 detects the internal temperature at a position corresponding to the upper portion of the storage rack 2 with respect to the position in the vertical direction. The first temperature sensor 24 detects the internal temperature at a position close to one side surface of the storage rack 2 with respect to the horizontal position.

  Regarding the position in the vertical direction, the second temperature sensor 25 detects the internal temperature at a position corresponding to the height between the first temperature sensor 24 and the third temperature sensor 26. The second temperature sensor 25 detects the internal temperature at a position close to the center of the storage rack 2 with respect to the horizontal position.

  The third temperature sensor 26 detects the internal temperature at a position corresponding to the lower portion of the storage rack 2 with respect to the position in the vertical direction. The third temperature sensor 26 detects the internal temperature at a position close to the other side surface of the storage rack 2 with respect to the horizontal position.

  The first temperature sensor 24, the second temperature sensor 25, and the third temperature sensor 26 may be attached to the inner wall of the main body 3. Alternatively, the first temperature sensor 24, the second temperature sensor 25, and the third temperature sensor 26 may be attached to the storage rack 2.

  If it is this Embodiment, it is advantageous in equalizing the temperature distribution of the vertical direction in the store | warehouse | chamber of 1 A of cold storage apparatuses by controlling a cooling means according to the some chamber | room temperature from which the position of a perpendicular direction differs. Become.

  If it is this Embodiment, it is advantageous in equalizing the temperature distribution of the horizontal direction in the store | warehouse | chamber of 1 A of cold storage apparatuses by controlling a cooling means according to the some chamber | room temperature from which the position of a horizontal direction differs. Become.

  The control device has a difference between the internal temperature detected by the first temperature sensor 24, the internal temperature detected by the second temperature sensor 25, and the internal temperature detected by the third temperature sensor 26. The cooling means may be controlled to reduce the size. By doing in that way, the temperature of each part in the store | warehouse | chamber of 1 A of cold insulators can be equalized reliably.

  As described above, in the present embodiment, a plurality of storage racks 2 are stored in the main body 3. The cold insulator 1 </ b> A may include temperature detection means for detecting the internal temperature of each of the plurality of storage racks 2 accommodated in the main body 3 as temperature detection means for detecting the internal temperature at a plurality of different positions. For example, the first temperature sensor 24, the second temperature sensor 25, and the third temperature sensor 26 may be provided for each storage rack 2. By doing so, the internal temperature of each storage rack 2 can be detected.

  FIG. 9 is a schematic bottom view of the lid 4 provided in the cold insulation device 1A of the first embodiment. As shown in FIG. 9, in the present embodiment, a plurality of Peltier elements 16 are installed on the lid 4. Each Peltier element 16 corresponds to each of the plurality of storage racks 2 stored in the main body 3. In the present embodiment, the cooling for each storage rack 2 accommodated in the main body 3 can be adjusted by individually controlling the energization of each Peltier element 16.

  The control device may control the cooling of each storage rack 2 according to the internal temperature of each storage rack 2. By doing so, the internal temperature of each storage rack 2 can be well controlled. For example, when there is a storage rack 2 whose inside temperature is higher than the appropriate temperature range, the power applied to the Peltier element 16 that cools the storage rack 2 may be controlled to increase. On the contrary, when there is a storage rack 2 whose inside temperature is lower than the appropriate temperature range, the power applied to the Peltier element 16 that cools the storage rack 2 may be controlled to decrease.

  When comparing the internal temperature of the plurality of storage racks 2, for example, the temperature detected by the second temperature sensor 25 at the center of each storage rack 2 is used as a representative value of the internal temperature of the storage rack 2. Also good. Or you may use the average value of the detected temperature of the 1st temperature sensor 24 of each storage rack 2, the 2nd temperature sensor 25, and the 3rd temperature sensor 26 as a representative value of the internal temperature of the said storage rack 2. FIG.

  FIG. 10 is a flowchart showing a control routine in the first embodiment. In the present embodiment, the control device may periodically and repeatedly execute the control of the flowchart of FIG.

  In step S1 of FIG. 10, the control device confirms that a certain time or more has elapsed since the start of cooling, for example, the start of energization of the Peltier element 16. When it is confirmed that a certain time or more has elapsed since the start of cooling, the process proceeds to step S2.

  In step S2, the control device detects the internal temperature Ta detected by the first temperature sensor 24, the internal temperature Tb detected by the second temperature sensor 25, and the internal temperature detected by the third temperature sensor 26. It is determined whether all of Tc is within the proper temperature range. As an example, a suitable temperature range is 2 ° C to 8 ° C. When all of the internal temperatures Ta, Tb, and Tc are in the appropriate temperature range of 2 ° C. to 8 ° C., the current cooling capacity is considered to be an appropriate capacity. In this case, the process proceeds from step S2 to step S3. In step S3, the control device maintains the power applied to the Peltier element 16 at the current value so as to maintain the current cooling capacity. After step S3, the routine ends.

  If at least one of the internal temperatures Ta, Tb, and Tc is not within the appropriate temperature range in step S2, the process proceeds to step S4. In step S4, the control device determines whether all of the interior temperatures Ta, Tb, and Tc exceed 8 ° C., which is the upper limit of the appropriate temperature range. If all of the internal temperatures Ta, Tb, and Tc exceed the upper limit of the appropriate temperature range, it is considered that the current cooling capacity is insufficient. In this case, the process proceeds from step S4 to step S5. In step S5, the control device increases the power applied to the Peltier element 16 from the current level so that the cooling capacity is higher than the current level. After step S5, the routine ends.

  If at least one of the internal temperatures Ta, Tb, and Tc is equal to or lower than the upper limit of the appropriate temperature range in step S4, the process proceeds to step S6. In step S6, the control device determines whether all of the internal temperatures Ta, Tb, and Tc are below 2 ° C., which is the lower limit of the appropriate temperature range. If all of the internal temperatures Ta, Tb, and Tc are below the lower limit of the appropriate temperature range, the current cooling capacity is considered excessive. In this case, the process proceeds from step S6 to step S7. In step S7, the control device lowers the power applied to the Peltier element 16 from the current level so that the cooling capacity is lower than the current level. After step S7, the routine ends.

  If at least one of the internal temperatures Ta, Tb, and Tc is equal to or higher than the lower limit of the appropriate temperature range in step S6, the process proceeds to step S8. When step S8 is reached, the difference between the highest temperature and the lowest temperature among the internal temperatures Ta, Tb, and Tc is large, that is, the variation between the internal temperatures Ta, Tb, and Tc is large. Can be considered. In this case, the control device performs an operation of intermittently cooling in time by periodically increasing or decreasing the power applied to the Peltier element 16. By performing the intermittent cooling operation, the variation among the internal temperatures Ta, Tb, and Tc can be gradually reduced.

Embodiment 2. FIG.
Next, the second embodiment will be described with reference to FIG. 11. However, the difference from the first embodiment will be mainly described, and the description of the same or corresponding parts will be simplified or omitted.

  FIG. 11 is a schematic perspective view of the storage rack 2 provided in the cold insulation device of the second embodiment. As shown in FIG. 11, the storage rack 2 of the second embodiment includes a plurality of doors 29. The door 29 can be moved between a closed position where the front opening of each cell of the storage rack 2 is closed and an open position where the front opening is not blocked. The door 29 in the present embodiment is a sliding door. The door 29 may be a hinged door that can be opened and closed by a hinge.

  In the present embodiment, the following effects can be obtained. When taking out the refrigerated product from the storage rack 2, each cell of the storage rack 2 can be selectively opened by the door 29. Among the cells of the storage rack 2, cells that do not need to be opened can be closed by the door 29, so that it is possible to reliably suppress the leakage of cold air from cells that do not need to be opened.

Embodiment 3 FIG.
Next, the third embodiment will be described with reference to FIG. 12. The description will focus on the differences from the first embodiment described above, and the description of the same or corresponding parts will be simplified or omitted.

  FIG. 12 is a schematic exploded perspective view showing the cold insulating device 1B of the third embodiment. As shown in FIG. 12, the cold insulation device 1 </ b> B of Embodiment 3 includes a storage rack 2, a main body 30, a drawer 31, and a lid 4.

  The drawer 31 has a box shape. The drawer 31 has an internal space for accommodating at least one storage rack 2. The drawer 31 has an upper surface opening. FIG. 12 shows a state in which three storage racks 2 are housed inside the drawer 31. Each storage rack 2 can be drawn upward from the drawer 31.

  The main body 30 has a box shape. The main body 30 has a storage chamber for storing a drawer 31 containing the storage rack 2. The main body 30 has a front opening. A drawer 31 can be inserted into the main body 30 from the front opening. FIG. 12 shows a state in which the drawer 31 is pulled out from the main body 30. The drawer 31 is pulled out from the main body 30 in the horizontal direction.

  The main body 30 has a heat insulating property to insulate the storage rack 2 from the outside air. The main body 30 may include a heat insulating material (not shown). In a state where the drawer 31 is inserted into the main body 30, the front surface of the drawer 31 closes the front opening of the main body 30. At least the front wall of the drawer 31 has a heat insulating property to insulate the storage rack 2 from the outside air. The side wall of the drawer 31 may have heat insulation properties.

  The lid 4 can be attached to and detached from the upper surface of the main body 30. FIG. 12 shows a state where the lid 4 is removed from the main body 30.

  A heat transfer section 32 is installed on the upper portion of the main body 30. The heat transfer unit 32 protrudes from the upper surface of the main body 30. The lower surface of the heat transfer section 32 forms part of the ceiling of the storage chamber of the main body 30 that stores the drawer 31. The heat transfer section 32 may be configured using a material having a high thermal conductivity or a heat pipe. For example, the heat transfer unit 32 may have a configuration using at least one of aluminum, aluminum alloy, stainless steel, copper, copper alloy, ceramics, heat conductive sheet, and heat pipe.

  In a state where the drawer 31 is inserted into the main body 30, the thermal connector 14 of the storage rack 2 contacts the lower surface of the heat transfer section 32. In a state where the drawer 31 is inserted into the main body 30, the thermal connector 14 of the storage rack 2 is thermally connected to the low temperature portion 20 of the Peltier element 16 of the lid portion 4 via the heat transfer portion 32. The configuration of the main body 30 is the same as or similar to the main body 3 of the first embodiment except for the above points.

  According to the third embodiment, the following effects can be obtained. When taking out the storage rack 2 at the front position among the plurality of storage racks 2 housed in the drawer 31, the drawer 31 may be pulled out to the position of the storage rack 2. Since the storage rack 2 at the back of the storage rack 2 to be taken out remains inside the main body 30, it is possible to prevent the storage rack 2 at the back from touching the outside air.

  The cooling means in the present invention is not limited to one using a thermoelectric element such as the Peltier element 16. The cooling means in the present invention may use, for example, a cold insulating agent or a cold storage agent. A mixture of water, a superabsorbent resin, a preservative, a shape stabilizer, etc. may be sufficient as a cold insulator or a cool storage agent, for example. The cooling means in the present invention may use, for example, a vapor compression refrigeration cycle.

  The processing circuit of the circuit board 23, that is, the control device included in the cold insulation device may include at least one processor and at least one memory. When the processing circuit includes at least one processor and at least one memory, each function of the control device may be realized by software, firmware, or a combination of software and firmware. At least one of software and firmware may be described as a program. At least one of the software and firmware may be stored in at least one memory. The at least one processor may realize each function of the control device by reading and executing a program stored in at least one memory. The at least one memory may include a nonvolatile or volatile semiconductor memory, a magnetic disk, or the like.

  The processing circuit may comprise at least one dedicated hardware. When the processing circuit includes at least one dedicated hardware, the processing circuit may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-). (Programmable Gate Array) or a combination thereof. The function of each part of the control device may be realized by a processing circuit. Further, the functions of the respective units of the control device may be collectively realized by a processing circuit. Some of the functions of the control device may be realized by dedicated hardware, and the other part may be realized by software or firmware. Each function of the control device may be realized by hardware, software, firmware, or a combination thereof.

  The configuration is not limited to a configuration in which the operation is controlled by a single control device, and a configuration in which the operation is controlled by cooperation of a plurality of control devices may be employed.

1A, 1B cooler, 2 storage rack, 3 body, 4 lid, 5 outer shell, 6 first partition, 7 second partition, 8 coating layer, 9 slit, 10 claw, 11, 12, 13 inner wall, 14 heat Connector, 15 holding part, 16 Peltier element, 17 heat sink, 18 blower, 19 electrical connector, 20 low temperature part, 21 high temperature part, 22 recess, 23 circuit board, 24 first temperature sensor, 25 second temperature sensor, 26 Third temperature sensor, 27 electrical connector, 28 power cord, 29 units, 30 body, 32 heat transfer section

Claims (9)

A cold storage device for refrigerated goods,
A storage rack for storing the object;
A main body for storing the storage rack;
A cooling means for cooling the inside of the cabinet,
With
The storage rack is at least partially removable from the body;
The storage rack includes an outer shell, at least one partition that divides a space inside the outer shell, and an inner wall that at least partially covers the inner surface of the outer shell ,
The at least one partition has a higher thermal conductivity than the outer shell;
The outer shell has a specific heat greater than the at least one partition;
The inner wall is a cold insulator having a higher thermal conductivity than the outer shell . A cold storage device for refrigerated goods,
A storage rack for storing the object;
A main body for storing the storage rack;
A cooling means for cooling the inside of the cabinet,
With
The storage rack is at least partially removable from the body;
The storage rack includes an outer shell and at least one partition that partitions a space inside the outer shell,
The at least one partition has a higher thermal conductivity than the outer shell;
The outer shell has a specific heat greater than the at least one partition;
The storage rack includes a thermal connector that thermally connects the at least one partition to the cooling means,
The thermal connector has a higher thermal conductivity than the outer shell;
The thermal connector comprises a contact surface that contacts a cold part of the cooling means ;
The contact surface is not covered by the outer shell,
The thermal connector is thermally connected to the at least one partition;
The thermal connector, cold device Ru separable der from the cold section of the cooling unit. A coating layer that at least partially covers the surface of the at least one partition;
The cold insulation device according to claim 2, wherein the coating layer has a specific heat larger than that of the partition.   The cold storage device according to any one of claims 1 to 3, wherein the at least one partition is thermally connected to the cooling means. The at least one partition includes a first partition and a second partition intersecting the first partition,
The cold insulator according to any one of claims 1 to 4, wherein the first partition and the second partition are thermally connected. The cold storage device according to any one of claims 1 to 5 , wherein the at least one partition includes a removable partition. An inner wall that at least partially covers the inner surface of the outer shell,
The cold insulator according to claim 2 or 3 , wherein the inner wall has a higher thermal conductivity than the outer shell. The cold insulator according to any one of claims 1 to 7 , wherein the cooling means includes a thermoelectric element. The cold storage device according to any one of claims 1 to 8 , wherein the storage rack includes a plurality of doors.

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