WO2015063820A1 - Heat-insulated box - Google Patents

Heat-insulated box Download PDF

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Publication number
WO2015063820A1
WO2015063820A1 PCT/JP2013/006490 JP2013006490W WO2015063820A1 WO 2015063820 A1 WO2015063820 A1 WO 2015063820A1 JP 2013006490 W JP2013006490 W JP 2013006490W WO 2015063820 A1 WO2015063820 A1 WO 2015063820A1
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WO
WIPO (PCT)
Prior art keywords
heat
cold storage
cold
heat insulating
plate
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PCT/JP2013/006490
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French (fr)
Japanese (ja)
Inventor
安人 日下
敬介 笠原
Original Assignee
安人 日下
敬介 笠原
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Application filed by 安人 日下, 敬介 笠原 filed Critical 安人 日下
Priority to PCT/JP2013/006490 priority Critical patent/WO2015063820A1/en
Publication of WO2015063820A1 publication Critical patent/WO2015063820A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3813—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container
    • B65D81/3816—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container formed of foam material

Definitions

  • the present invention relates to a heat-insulating box having a sealing property used as a returnable box having a heat insulating effect, and in particular, by making the heat passage rate of the cover plate and the bottom plate smaller than the heat passage rate of the side plate in order to achieve effective heat insulation.
  • the present invention relates to a heat insulation box that can obtain the maximum heat insulation effect with a minimum amount of heat insulating material and can be kept cool and warm for a desired period.
  • a heat insulating container including a container, a heat insulating bag made of a main body and a lid for containing the container, each wall portion of the bag main body ,
  • a technology related to a heat insulating container using a vacuum heat insulating material on the bottom wall part and the top wall part of the lid body is disclosed, which suggests that it is possible to provide a heat insulating container with greatly improved heat insulating performance. ing.
  • the vacuum heat insulating material is a member that can obtain a high heat insulating effect, and is a member that can be used for a heat insulating container.
  • the heat insulating material is evenly provided on all surfaces in the container. Therefore, the cost required for the vacuum heat insulating material is increased, and it has not been possible to provide a heat insulating container having a high heat insulating effect and excellent heat insulating efficiency in terms of cost effectiveness.
  • the room for storing the cold insulation agent and the room for storing the cold object to be cooled are configured to circulate air without being hermetically sealed. In other words, the cold insulation temperature time (period) is conversely limited, and it cannot be said that the container can achieve a uniform and sufficient cold insulation temperature effect over a desired period (long time).
  • Japanese Patent Application Laid-Open No. 2003-128163 discloses a technique related to a heat insulating cold container that can be manufactured without cost and time and has an excellent heat insulating effect without increasing the thickness of the container main body and the lid. It is disclosed.
  • the container body and the lid of the heat insulating cold container are mixed with 25 to 80% by weight of a polyolefin-based thermoplastic synthetic resin and 20 to 75% by weight of paper powder having an average particle size of 30 to 80 ⁇ m under heating.
  • a technique of forming the mixture from the above is disclosed, and by attaching a foam as a heat insulating material to at least the inner surface of the container main body, the thermal conductivity can be further reduced, and the heat insulating property and the cold insulation property of the container are improved. Techniques for further improvement are suggested.
  • the applicant of the present invention is also the applicant of the invention according to Japanese Patent Application Laid-Open No. 2010-120673.
  • a returnable box having a cold insulation temperature effect the inside of the case body of the heat insulating material is divided into an upper chamber and a lower chamber by a partition plate of the heat insulating material, and the cold storage agent or the heat insulating agent is stored in the upper chamber,
  • the lower chamber a technique for allowing a cold body or the like to be kept for a long time by storing the cold body or the warm body is disclosed.
  • Technical contents are disclosed that can keep a body cold or warm for a long time and can transport a cold body or a warm body from a production site to a remote place as it is.
  • the present invention is a sealed heat insulation box used as a returnable box having a heat insulation effect, and in particular, the temperature distribution in the heat insulation box is a heat load per area with respect to the external temperature.
  • the bottom plate and the bottom plate are larger than the side plate, so that the heat transfer rate of the lid plate and bottom plate is smaller than the heat transfer rate of the side plate in order to achieve effective heat insulation.
  • a heat insulation box that can obtain a heat insulation effect and can exhibit a maximum heat insulation effect at a low cost, which can be kept cold and kept for a desired period of time.
  • the heat insulation box according to the present invention is a heat insulation box for storing a cold-retained warm material and a cold storage warming agent therein to cool or retain the cold-retained warm object, ,
  • the heat insulation box according to the present invention is a heat insulation box for storing a cold-insulated warm material and a cold storage warming agent therein to cool or keep the cold-warm material
  • the heat insulation box includes a regenerator / warmant storage unit that stores a regenerator / warmth agent, a cold-warm / warmth-warm storage unit that stores a cold-warm / warmth material, It is the structure which consists of a heat insulation partition plate which consists of a heat insulating material which interrupts
  • the heat insulation box includes a regenerator / warmant storage unit that stores a regenerator / warmth agent, a cold-warm / warmth-warm storage unit that stores a cold-warm / warmth material, It consists of a heat insulating partition plate made of a heat insulating material for partitioning, and the heat insulating partition plate has a configuration in which a single hole or a plurality of holes penetrating the plate are formed so that mutual air can flow.
  • the cold storage warming agent is composed of a container and a gel-like content for cold storage temperature stored in the container.
  • the regenerator / heater stored in the regenerator / heater storage unit has a maximum volume that can be stored in the regenerator / heater storage unit in order to suppress air convection in the regenerator / heater storage unit. It is the structure which is a single cold storage warming agent which consists of a shape corresponding to the said cold storage warming agent storage part inside dimension so that a surface area may become the minimum.
  • the cold storage warming agent stored in the cold storage warming agent storage unit is configured to have a shape that can be stacked in the cold storage warming agent storage unit without a gap in order to suppress convection of air in the cold storage warming agent storage unit.
  • the cold storage warming agent storage part arranges the cold storage warming agent in the cold storage warming agent storage part and suppresses air convection made of a lightly filled packaging material in the formed gap. It is the structure which has arrange
  • the ratio of the insulating effect of the cover plate and the heat transfer coefficient of the bottom plate (heat transmission coefficient) K 1 and the side plate heat transfer coefficient of the (heat transmission coefficient) K 2 has a heat insulating material made from the range of K 1 ⁇ K 2, the main Further, it is possible to provide a heat insulation box with good heat insulation efficiency by blocking heat flow (leakage) from the top and bottom (the cover surface and the bottom surface) of the heat insulation box. 2.
  • the lid plate, the bottom plate, and the side plate are made of a heat insulating material having the same thermal conductivity, and the thickness t 1 of the lid plate and the bottom plate is at least 2.2 t 2 > t 1 > 1 with respect to the thickness t 2 of the side plate. Since the heat insulating material is in the range of 2 t 2 , heat penetration (leakage) at the top and bottom of the heat insulating box can be blocked, and a heat insulating box with good heat insulating efficiency can be provided.
  • the heat insulation box is divided into a cool storage / warming agent storage part and a cold storage object storage part, and a heat insulating partition plate is provided for partitioning each storage part. The cold insulation temperature and heat from the agent will not be applied to the cold object or the warm material more than necessary, and the cold insulation temperature can be maintained for a long time through the gentle holding heat.
  • each of the above-described structures is a heat insulation box with good heat insulation efficiency, there is no heat insulation partition plate that partitions the heat insulation efficiency cold storage agent storage unit and the cold object storage unit, or there is a hole in the heat insulation partition plate so that air flows. Even in this case, since the heat insulation between the cover plate and the bottom plate is good, the cold insulation temperature can be maintained for a long time. 6).
  • the cold storage warming agent is configured to store the gel-like contents for cold storage temperature in the container, so the fluidity after the freezing point of the cold storage warming agent is suppressed, heat loss due to heat convection is reduced, and the containers and the container and the cold storage
  • the gap between the warming agent storage units can be minimized, and the convection of air in the cold storage warming agent storage unit can be suppressed to effectively keep the cold insulation temperature for a long time.
  • the cool storage warming agent has a shape that corresponds to the inside dimensions of the cool storage warming agent storage part, the maximum amount of the cool storage warming agent that can be stored in the cold storage warming agent storage part and at the same time the surface area of the cold storage warming agent is minimized, so It becomes possible to suppress the air convection. 8). Since the cold storage warming agent has a shape that can be stacked and disposed in the cold storage warming agent storage part without any gap, it becomes difficult for air to enter the cold storage warming agent storage part, and convection of air can be suppressed.
  • the air convection suppressing material is arranged in the gap formed when the cold storage warming agent is stacked and arranged in the cold storage warming agent storage part, it becomes difficult for air to enter the cold storage warming agent storage part and suppresses air convection. Is possible.
  • FIG. 1 is a side sectional view of a heat insulating box in which the heat passing rate (heat transmissivity) of the lid plate / bottom plate and the side plate according to the present invention is changed
  • FIG. 2 shows the change in the thickness of the lid plate / bottom plate and the side plate.
  • FIG. 3 is a side sectional view of a heat insulating box in which the thickness of the lid plate / bottom plate and the side plate is changed
  • FIG. 4 is a side sectional view of the heat insulating box in which the thickness of the lid plate / bottom plate and the side plate is the same.
  • FIG. 5 is a side cross-sectional view of a heat insulating box in which the heat passing rate (heat transmissivity) of the cover plate / bottom plate and the side plate having the heat insulating partition plate is changed
  • FIG. It is side surface sectional drawing of the heat insulation box which changed the thickness of the side plate.
  • FIG. 7 is a side cross-sectional view of a heat insulating box having a heat insulating partition plate in a state in which a cool storage agent and a cold object are stored
  • FIG. 8 has a heat insulating partition plate in a state in which the heat storage agent and a heat stored material are stored. It is side surface sectional drawing of a heat insulation box.
  • FIG. 7 is a side cross-sectional view of a heat insulating box having a heat insulating partition plate in a state in which a cool storage agent and a cold object are stored
  • FIG. 8 has a heat insulating partition plate in a state in which the heat storage agent and a heat stored
  • FIG. 9 is a side cross-sectional view of a heat insulating box having a heat insulating partition plate in a state in which a single cold storage agent and an object to be cooled are stored
  • FIG. 10 has a heat insulating partition plate in a state in which a plurality of cold storage agents are stored. It is side surface sectional drawing of a heat insulation box.
  • FIG. 11 is a side cross-sectional view of a conventional heat insulation box
  • FIG. 12 is a view showing a result of a cold insulation temperature experiment of the heat insulation box according to the present invention.
  • the heat insulation box 10 of the present invention is composed of a box body sealed by a cover plate 20, a side plate 30 erected around the periphery, and a bottom plate 40, and mainly stores a cold insulation material and a regenerator material inside.
  • This is a heat insulation box that can be manufactured at a low cost, and is a box for keeping the temperature of the object to be kept cold or keeping the temperature of the stored object for a long time.
  • the heat insulation box 10 is configured by a rectangular parallelepiped sealed by a cover plate 20, a side plate 30, and a bottom plate 40 in the present embodiment, but the shape of the box is a rectangular parallelepiped.
  • the shape is not limited to the above, and any solid shape having a substantially parallel upper and lower surfaces such as a cylindrical shape or a trapezoidal column may be used.
  • the cover plate 20 and the bottom plate 40 are made of a heat insulating material having substantially the same heat passage rate (heat transmissivity).
  • the heat passage rate (heat transmissivity) of the heat insulating material constituting the cover plate 20 and the bottom plate 40 can be represented by a constant K 1 [kcal / m 2 ⁇ h ⁇ ° C.].
  • the side plate 30 is composed of a heat insulating material having a different heat passage rate (heat transmissivity) from the lid plate 20 and the bottom plate 40.
  • the heat passage rate (heat flow rate) of the heat insulating material constituting the side plate 30 can be represented by a constant K 2 [kcal / m 2 ⁇ h ⁇ ° C.].
  • K 1 and K 2 have a relationship of K 1 ⁇ K 2 . It is necessary that the heat passage rate (heat flow rate) of the heat insulating material constituting the cover plate 20 and the bottom plate 40 is smaller than the heat flow rate (heat flow rate) of the heat insulating material constituting the side plate 30.
  • the conventional heat insulation box has a structure that is generally seen that the cover plate, the bottom plate, and the side plate are all formed of the same member. A box with a different structure (with different materials) was not created. Further, as disclosed in Japanese Patent Application Laid-Open No. 2003-128163, there is a structure in which a heat insulating material is not attached to the cover plate. However, in such a configuration, on the contrary, the cooling efficiency is deteriorated. There was a problem.
  • FIG. 12 shows the experimental results of the cold insulation / heat insulation experiment of the heat insulation box 10 according to the present invention.
  • the heat insulation (cooling) effect produced by the heat insulation box was measured by changing the heat passage rate of each plate by changing the thickness of the cover plate and the bottom plate, and the thickness of the side plate. is there.
  • the box according to the present invention which has an internal space of about 30 cm square as a heat insulating box and is partitioned by a heat insulating partition plate to be described later, is used to store the cold storage agent and the object to be cooled. The time until the temperature reached a predetermined temperature was measured.
  • the XPS extruded polystyrene
  • the thickness was changed by increasing the number of XPS used. Further, 300 g of block-shaped ice stored in a pack as a cold insulation material is stored in the cold storage material storage section, and a plastic bottle containing 600 ml of water as a cold storage object is stored as a dummy in the cold storage object storage section.
  • the outside air temperature during the experiment was approximately 32 ° C. to 34 ° C.
  • T 1 in the regenerator storage unit is ⁇ 18 ° C.
  • T 2 in the cold storage unit storage unit is ⁇ 18 ° C.
  • T 1 and T 2 are approximately ⁇ 2 ° C. to ⁇ 1 ° C., respectively. The elapsed time until was measured.
  • the cold heat retention time was 9 to 10 hours (1 in FIG. 12).
  • the holding time of the cold time is From 12 hours to 13 hours, it can be confirmed that the heat insulation effect is enhanced (2 in FIG. 12).
  • the thickness of the side plate is kept as it is, and the thickness of the lid plate and the bottom plate is added and measured (the cover plate, the bottom plate is composed of 3 XPS, and the side plate is composed of 2 XPS).
  • the holding time of cold heat is 15 hours to 16 hours (3 in FIG. 12), and it is confirmed that a significant heat insulating and heat insulating effect can be obtained only by increasing the thickness of the cover plate and the bottom plate (lowering the heat transfer rate). It was.
  • the cooling time was 15 to 16 hours (4 in FIG. 12), and 2 side plates were used. It was confirmed that there was no change in the heat insulation and heat insulation effect compared with the ones of the above, and the influence of the side plate on the heat insulation and heat insulation effect was small compared to the cover plate and the bottom plate.
  • the thickness of the side plate is left as it is, and the thickness of the lid plate and the bottom plate is added and measured (comprising 4 lids, 4 XPS for the bottom plate, and 3 XPS for the side plate), and the cooling time is kept. It was further increased to 17 to 18 hours (5 in FIG. 12), and it was confirmed that a more efficient heat insulating and heat insulating effect can be obtained only by increasing the thickness of the cover plate and the bottom plate again.
  • the time for the contents to dissolve is compared with the case where the thickness of each of the lid plate, the bottom plate and the side plate is increased evenly. It is speculated that there is no big difference. That is, if the thickness of the cover plate and the bottom plate and the heat transfer rate of the side plate are balanced, if the thickness of the heat insulation plate of the cover plate and the bottom plate is sufficient (the heat transfer between the cover plate and the bottom plate) If the rate is sufficiently low), even if the number of side plates is saved (even if the side plate is made of an inexpensive material with a high heat transfer rate), it may be considered that sufficient heat insulation and heat insulation effects can be obtained. .
  • the heat insulating property of the bottom plate is high (the heat passage rate (heat flow rate) is low)
  • the inside of the heat insulating box is hardly affected by external heat, and as a result, the duration of the cooling state is prolonged. I can do it.
  • the cold storage agent placed in the upper stage in the heat insulation box partitioned by the heat insulation partition plate transmits cold heat to the lower cold object through the heat insulation partition plate, Although it cools, the cold heat which a cool storage agent emits also stays in the upper space at the same time.
  • the heat insulating property of the cover is high as in this embodiment (heat transmission rate (heat When the penetration rate is low), the penetration of warm heat from the outside upward direction is difficult to be transmitted to the inside, and the higher the heat insulation of the lid, the more the cold temperature inside is kept.
  • the influence received from the heat flowing through from the side plate is temporary, it is considered to be a structural improvement due to the fact that the heat insulating property of the lid plate becomes more important.
  • the above-mentioned phenomenon is considered to be the same when performing heat insulation instead of cooling.
  • the location of the object to be warmed is turned upside down, and the point is to suppress the cooling of the raised warm air. That is, the cover plate constituting the heat insulating box, the side plates and the bottom plate, the lid and bottom plates heat transfer coefficient of which is disposed above and below the heat insulating box (heat transmission coefficient) K 1 in a case where it is lower than the K 2 of the side plate
  • the heat insulation effect can be maintained.
  • the cover plate 20, the side plate 30, and the bottom plate 40 are made of a heat insulating material having the same thermal conductivity. ing.
  • the thermal conductivity of the heat insulating material constituting the cover plate 20, the side plate 30, and the bottom plate 40 can be expressed by a constant ⁇ [kcal / m ⁇ h ⁇ ° C.].
  • the thickness of each heat insulating material is represented by t n [mm]
  • the relationship between the thickness t 1 of the cover plate 20 and the bottom plate 40 and the thickness t 2 of the side plate 30 is: 2.2t 2 > t 1 > 1.2t 2
  • the thickness t 1 of the lid plate 20 and the bottom plate 40 is thicker than the thickness t 2 of the side plate 30 and is 1.2 to 2.2 times as thick as t 2 . Since the cover plate 20, the side plate 30, and the bottom plate 40 are made of a heat insulating material having the same thermal conductivity, a thicker plate has higher heat insulating efficiency.
  • the heat insulating box 10 can be configured to be thin and low cost, and can exhibit a sufficient heat insulating effect by increasing the thickness of the cover plate 20 and the bottom plate 40, and exhibit the maximum heat insulating effect at a low cost. Things can be realized. That is, the heat insulation effect becomes higher when the side plate heat insulation is thinned to the lid plate and the bottom plate than when the entire heat insulation box is uniformly insulated, thereby reducing the material cost of the heat insulation plate.
  • a heat insulating material within this range a vacuum heat insulating material (about 0.0035 [kcal / m ⁇ h ⁇ ° C.]) or a polystyrene foam (about 0.035 k [cal / m ⁇ h ⁇ ° C.]) can be considered.
  • a heat insulating material within this range it is possible to construct a heat insulating box with good heat insulating efficiency and an effective heat insulating effect, and to improve the heat insulating box with excellent cost performance. Is possible.
  • the heat insulation box 10 is provided with a cold storage / warming agent storage 50 for storing the cold storage / warming agent 80 and a cold / warm storage container 60 for storing the cold / warmth 90. It has a configuration. Moreover, it is the structure by which the heat insulation partition plate 70 is provided between the cool storage warm material storage part 50 and the to-be-cooled material storage part 60. FIG. The heat insulating partition plate 70 is arranged so as to divide the inside of the heat insulating box 10 in the vertical direction, and plays a role of partitioning the cold storage material storage unit 50 and the cold object storage unit 60 and blocking mutual air circulation.
  • the heat insulating partition plate 70 is made of a heat insulating material such as a polystyrene foam or a vacuum heat insulating plate, but is not limited thereto, and may be appropriately selected as long as it is a material having other heat insulating effects. Is possible.
  • the heat insulating partition plate 70 uses the same material as that of the cover plate 20, the side plate 30, and the bottom plate 40. However, if the material has a heat insulating effect, a different material is appropriately selected and used. May be.
  • FIG. 5 and 6 show an embodiment in which the cool storage material 92a is cooled and cooled by using the cool storage agent 82a.
  • the cool storage temperature storage unit 50 is disposed in the upper stage, and the cool temperature is stored in the lower stage.
  • the object storage part 60 is arrange
  • the heat insulation box 10 is provided with a cold storage / warming agent storage unit 50 for storing a cold storage warming agent and a cold storage material storage unit 60 for storing a cold storage material, and is provided with a heat insulation partition plate 60 made of a heat insulating material for partitioning them.
  • the heat insulating partition plate 60 may have a structure in which a single hole or a plurality of holes are formed. By setting it as this structure, it becomes possible to distribute
  • the heat insulating partition plate that partitions the cold storage agent storage unit and the cold object storage unit.
  • FIG. 11 since the heat insulation between the cover plate and the bottom plate is good as described above, even when the air is circulated through the heat insulation partition plate as shown in FIG. Can be maintained for a long time.
  • the cold storage warming agent 80 has a configuration including a container 84 and a gel-like cold storage temperature content 86 stored in the container 84.
  • the cold storage temperature content 86 which is the content of the cold storage warming agent 80
  • the cold storage temperature content 86 into a gel form, after melting from the freezing point, there is no convection due to the non-flowable gel form, and there is less heat dissipation compared to fluids etc. It becomes possible to keep the temperature of the cold storage warming agent constant over a long period of time. Thereby, the cold insulation and the heat insulation by the heat insulation box 10 over a longer time became possible.
  • the cold storage warming agent 80 can be configured by a single cold storage warming agent having a shape corresponding to the inner dimension of the cold storage warming agent storage unit 50. That is, the cold storage warming agent 80 can be configured in such a shape that the inside of the cold storage warming agent storage unit 50 is filled with the single cold storage warming agent 80.
  • the cold storage warming agent 80 radiates cold / hot heat, and the temperature of the cold storage warming agent 80 itself changes due to the influence of heat from the outside. At this time, if there is a gap between the cold storage warming agent 80 and the inner wall of the cold storage warming agent storage unit 50, air flows therethrough.
  • the air plays a role of gently transmitting the cold / heat received from the outside to the cold storage warming agent 80 while convection, so that the temperature of the cold storage warming agent 80 is likely to change. As a result, the cold storage by the cold storage warming agent 80 ⁇ The insulation time will be shortened.
  • the cold storage warming agent 80 By making the cold storage warming agent 80 have the above structure, it becomes possible to suppress the convection of air in the cold storage warming agent storage unit 50. Further, if the cold storage warming agent 80 has a large surface area, the cold storage heat agent 80 is in contact with the cooling heat and heat, and accordingly, the cold storage and heat retention time is shortened. Therefore, it is desirable that the surface area be as small as possible. By configuring the cold storage warming agent 80 in a single shape as in the present embodiment, it is possible to reduce the total surface area. With the above structure, the cold storage warming agent 80 has a maximum volume that can be stored in the cold storage warming agent storage unit 50, and can minimize the surface area of the cold storage warming agent 80. Can be realized.
  • the cold storage warming agent 80 can be formed into a shape that can be stacked and disposed in the cold storage warming agent storage unit 50 without a gap.
  • the temperature of the air in contact with the cold storage / warming agent 80 always changes, resulting in a reduction in the cool / heat retention time of the cold storage / warming agent 80.
  • the cold storage warming agent 80 is configured as described above, when the cold storage warming agent 80 is stored in the cold storage warming agent storage unit 50, the convection of the air in the cold storage warming agent storage unit 50 is suppressed, and a longer time is required. It is possible to achieve cold and warm insulation over a wide range.
  • the inside of the regenerator / warmant storage part 50 can be configured such that an air convection suppressing material 52 made of a lightweight filling and packaging material is disposed in the formed gap.

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Abstract

Provided is a heat-insulated box that, by means of reducing the overall heat transfer coefficient of a lid plate and a bottom plate below that of a side plate, can obtain the greatest amount of heat-insulating effect using the smallest amount of heat-insulating material, is capable of a desired period of time of cold retention and hot retention, and exerts the greatest amount of heat-insulating effect at a low cost. The heat-insulated box (10) comprises a box body sealed by a lid plate (20), a side plate (30) provided upright at the periphery, and a bottom plate (40), the lid plate (20) and the bottom plate (40) comprise a heat-insulating material having approximately equivalent overall heat transfer coefficients (K1), the side plate (30) comprises an insulating material having an overall heat transfer coefficient (K2) differing from that of the lid plate (20) and the bottom plate (40), and the proportion of the heat-insulating effects of the overall heat transfer coefficient (K1) and the overall heat transfer coefficient (K2) is in the range of K1 < K2.

Description

断熱箱Heat insulation box
　本発明は、断熱効果を有する通い箱として用いる密封性のある断熱箱に関し、特に、効果的断熱を実現するために蓋板および底板の熱通過率を、側板の熱通過率より小さくすることにより、最小限の断熱材で最大限の断熱効果を得ることができ、所望する期間の保冷・保温が可能な断熱箱に関する。 The present invention relates to a heat-insulating box having a sealing property used as a returnable box having a heat insulating effect, and in particular, by making the heat passage rate of the cover plate and the bottom plate smaller than the heat passage rate of the side plate in order to achieve effective heat insulation. The present invention relates to a heat insulation box that can obtain the maximum heat insulation effect with a minimum amount of heat insulating material and can be kept cool and warm for a desired period.
　従来より、保温・保冷が可能な通い箱に関する様々な技術が開発されており、断熱性を有する多くの通い箱が開発され、利用されている。保温・保冷が可能な通い箱の用途としては、例えば、食品などを長時間に渡って運搬するケースが考えられる。生鮮食品を長距離に渡り運搬する場合や、長時間保管する場合など、長時間の保冷を必要とする状況は多数存在している。また、出前（仕出し）のように出来立ての食材を熱いままに届ける場合、一定時間の効果的な保温が出来ないと味を落としてしまう問題が発生するため、長時間または一定時間の保温が要求される。 Conventionally, various technologies relating to returnable containers that can be kept warm and cold have been developed, and many returnable containers having heat insulation properties have been developed and used. As a use of the returnable box capable of keeping warm and cold, for example, a case where food is transported for a long time can be considered. There are many situations that require long-term cooling, such as when transporting fresh food over long distances or storing it for long periods of time. In addition, when delivering freshly prepared ingredients as before delivery (catering), there is a problem that the taste may be lost if effective heat insulation for a certain period of time is not possible. Required.
　更に、血清や人体移植用臓器などの運搬を行う場合、長時間に渡り保冷状態を保つことが要求される。また、被運搬材が凍結してはならない物の場合、寒剤を多く入れて長期の保冷を行う事は不可とされているため、長時間に渡って内部を効率的に一定の温度に保つことが出来る通い箱は、医療の現場においても必要とされている。 Furthermore, when carrying serum or organs for human transplantation, it is required to keep the cold state for a long time. In addition, if the material to be transported must not be frozen, it is not possible to cool it for a long time with a large amount of cryogen. Keep the interior at a constant temperature for a long time. A returnable box is needed in the medical field.
　このような保温・保冷が可能な通い箱に関する技術として、様々な技術が開発されている。例えば、特開２００７－１２６１８８号公報に開示された技術によると、容器と、容器を収容する本体と蓋体からなる断熱性のバッグとを備えた断熱容器であって、バッグ本体の各壁部、底壁部および蓋体の頂壁部に真空断熱材を用いた断熱容器に関する技術が開示されており、これにより、断熱性能を大巾に向上した断熱容器を提供可能となる旨が示唆されている。 A variety of technologies have been developed as technologies related to returnable boxes that can keep warm and cool. For example, according to the technique disclosed in Japanese Patent Application Laid-Open No. 2007-126188, a heat insulating container including a container, a heat insulating bag made of a main body and a lid for containing the container, each wall portion of the bag main body , A technology related to a heat insulating container using a vacuum heat insulating material on the bottom wall part and the top wall part of the lid body is disclosed, which suggests that it is possible to provide a heat insulating container with greatly improved heat insulating performance. ing.
　真空断熱材は、高い断熱効果を得ることが可能となる部材であり、断熱容器に用いることが可能な部材であるが、上記従来技術では、断熱材を容器中の全ての面に均等に装備する構成となっているため、真空断熱材に掛かるコストが大きくなり、費用対効果の点で断熱効果が高く、かつ断熱効率にも優れた断熱容器ということができなかった。また、保冷温剤を収納する室と被保冷温物を収納する室は密閉されることなく空気が循環する構成となっているが、このような構成では、過冷却、過加熱をもたらすばかりでなく、保冷温時間（期間）が逆に限定されることとなり、所望する期間（長時間）に渡り、均等で充分な保冷温効果を果たせる容器とは言えなかった。 The vacuum heat insulating material is a member that can obtain a high heat insulating effect, and is a member that can be used for a heat insulating container. However, in the above prior art, the heat insulating material is evenly provided on all surfaces in the container. Therefore, the cost required for the vacuum heat insulating material is increased, and it has not been possible to provide a heat insulating container having a high heat insulating effect and excellent heat insulating efficiency in terms of cost effectiveness. In addition, the room for storing the cold insulation agent and the room for storing the cold object to be cooled are configured to circulate air without being hermetically sealed. In other words, the cold insulation temperature time (period) is conversely limited, and it cannot be said that the container can achieve a uniform and sufficient cold insulation temperature effect over a desired period (long time).
　また、特開２００３－１２８１６３号では、コストと時間をかけずに製造可能であって、容器本体と蓋との厚さ寸法を大きくしなくても優れた断熱効果を有する断熱保冷容器に関する技術が開示されている。ここでは、断熱保冷容器の容器本体と蓋を、２５～８０重量％のポリオレフィン系熱可塑性合成樹脂と、３０～８０μｍの平均粒径を有する２０～７５重量％の紙粉末とを加熱下に混合した混合物とから形成する技術が開示されており、少なくとも容器本体の内面に断熱材である発泡体を取り付けることにより、より熱伝導率を低下させることができ、容器の断熱性と保冷性とが一層向上する技術が示唆されている。 Japanese Patent Application Laid-Open No. 2003-128163 discloses a technique related to a heat insulating cold container that can be manufactured without cost and time and has an excellent heat insulating effect without increasing the thickness of the container main body and the lid. It is disclosed. Here, the container body and the lid of the heat insulating cold container are mixed with 25 to 80% by weight of a polyolefin-based thermoplastic synthetic resin and 20 to 75% by weight of paper powder having an average particle size of 30 to 80 μm under heating. A technique of forming the mixture from the above is disclosed, and by attaching a foam as a heat insulating material to at least the inner surface of the container main body, the thermal conductivity can be further reduced, and the heat insulating property and the cold insulation property of the container are improved. Techniques for further improvement are suggested.
　しかし、この技術によると確かにある程度長時間に渡って保冷状態を継続することが可能となると考えられるが、より長期に渡って保冷を継続することは難しいという問題があった。特に、容器の側壁部分と、蓋および底部分との熱伝導率の相違は、保冷効率と関係が深く、蓋に断熱材を取り付けない構成の場合は、上部からの熱の浸入・放出が大きいため上記示唆の内容とは逆に断熱（保冷）効率が悪くなるという問題を抱えていた。 However, although it is considered that it is possible to continue the cold state for a long time according to this technique, there is a problem that it is difficult to continue the cold state for a longer period of time. In particular, the difference in thermal conductivity between the side wall portion of the container, the lid and the bottom portion is closely related to the cold insulation efficiency, and in the case where a heat insulating material is not attached to the lid, the heat intrusion / release from the top is large. Therefore, contrary to the content suggested above, there was a problem that the heat insulation (cold insulation) efficiency deteriorated.
　本願発明の出願人は、特開２０１０－１２０６７３号に係る発明の出願人でもある。ここでは、保冷温効果を有する通い箱として、断熱材のケース本体の内部を断熱材の仕切板により上室と下室に分断画成し、上室内には保冷剤または保温剤を収納し、下室には被保冷体または被保温体を収納することにより、被保冷体等を長時間保冷または保温することを可能とする技術が開示されており、簡便な手段により被保冷体や被保温体を長時間保冷または保温でき、生産地から遠隔地まで被保冷体や被保温体をそのままの状態で搬送可能とする技術内容が開示されている。 The applicant of the present invention is also the applicant of the invention according to Japanese Patent Application Laid-Open No. 2010-120673. Here, as a returnable box having a cold insulation temperature effect, the inside of the case body of the heat insulating material is divided into an upper chamber and a lower chamber by a partition plate of the heat insulating material, and the cold storage agent or the heat insulating agent is stored in the upper chamber, In the lower chamber, a technique for allowing a cold body or the like to be kept for a long time by storing the cold body or the warm body is disclosed. Technical contents are disclosed that can keep a body cold or warm for a long time and can transport a cold body or a warm body from a production site to a remote place as it is.
　しかし、この技術によると確かにある程度長時間に渡って保冷温を実現することが可能となるが、断熱材に掛かるコストと断熱効率のバランスがとれたものとは言えず、経費と効率と対比すると無駄があるという問題点があった。特に、断熱部材として真空断熱材を使用すると、コストが掛かる割には予想される断熱効果が得られないという問題が内在していた。 However, with this technology, it is possible to achieve cold insulation over a long period of time, but it cannot be said that the cost of heat insulation and the heat insulation efficiency are balanced, and the cost and efficiency are compared. Then there was a problem of waste. In particular, when a vacuum heat insulating material is used as the heat insulating member, there is a problem that an expected heat insulating effect cannot be obtained for the cost.
　その他の加温・冷却装置等を装備した温度管理を行うことももちろん可能であるが、製造・運用コストがかさむこととなり、故障時に内容物が即座に劣化するという問題点もある。
　そこで、安価に製造できるとともに、断熱効果が高く一定の温度を長時間に渡って保つことが出来る運搬用の断熱箱の開発が望まれていた。
特開２００７－１２６１８８号公報 特開２００３－１２８１６３号公報 特開２０１０－１２０６７３号公報 It is of course possible to carry out temperature management with other heating / cooling devices, but there is also a problem that the production / operation costs increase and the contents deteriorate immediately upon failure.
Therefore, it has been desired to develop a heat insulating box for transportation that can be manufactured at low cost and has a high heat insulating effect and can maintain a constant temperature for a long time.
JP 2007-126188 A JP 2003-128163 A JP 2010-120673 A
　本発明は上記問題を解決するために、断熱効果を有する通い箱として用いる密封断熱箱であって、特に、断熱箱内の温度分布は、外部温度に対して面積当りの熱負荷は、蓋板と底板の方が側板より大となるため、効果的断熱を実現するために蓋板および底板の熱通過率を、側板の熱通過率より小さくすることにより、最小限の断熱材で最大限の断熱効果を得ることができ、所望する期間の保冷・保温が可能な、低コストで最大限の断熱効果を発揮する断熱箱を提供する。 In order to solve the above problems, the present invention is a sealed heat insulation box used as a returnable box having a heat insulation effect, and in particular, the temperature distribution in the heat insulation box is a heat load per area with respect to the external temperature. The bottom plate and the bottom plate are larger than the side plate, so that the heat transfer rate of the lid plate and bottom plate is smaller than the heat transfer rate of the side plate in order to achieve effective heat insulation. Provided is a heat insulation box that can obtain a heat insulation effect and can exhibit a maximum heat insulation effect at a low cost, which can be kept cold and kept for a desired period of time.
　上記の目的を達成するために本発明に係る断熱箱は、内部に被保冷温物と蓄冷温剤を収納して被保冷温物の保冷または保温を行う断熱箱であって、前記断熱箱は、蓋板と、周囲に立設される側板と、底板とによって密封された箱体からなり、前記蓋板と前記底板は、略等しい熱通過率（熱貫流率）Ｋ１＝ｋｃａｌ／ｍ２・ｈ・℃を有する断熱材からなるとともに、前記側板は、前記蓋板と前記底板と異なる熱通過率（熱貫流率）Ｋ２＝ｋｃａｌ／ｍ２・ｈ・℃を有する断熱材からなり、前記熱通過率（熱貫流率）Ｋ１と前記熱通過率（熱貫流率）Ｋ2の断熱効果の割合が、Ｋ１＜Ｋ2の範囲の断熱材からなる構成である。 In order to achieve the above object, the heat insulation box according to the present invention is a heat insulation box for storing a cold-retained warm material and a cold storage warming agent therein to cool or retain the cold-retained warm object, , A cover plate, a side plate erected on the periphery, and a box sealed by a bottom plate, and the cover plate and the bottom plate have substantially the same heat transmission rate (heat transmissivity) K 1 = kcal / m 2. -It is made of a heat insulating material having h · ° C, and the side plate is made of a heat insulating material having a different heat transmission rate (heat transmissivity) K 2 = kcal / m 2 · h · ° C from the lid plate and the bottom plate, the proportion of the heat insulating effect of the heat transfer coefficient (heat transmission coefficient) K 1 and the heat transfer coefficient (heat transmission coefficient) K 2 is a configuration consisting of a heat insulating material in the range of K 1 <K 2.
　また、本発明に係る断熱箱は、内部に被保冷温物と蓄冷温剤を収納して被保冷温物の保冷または保温を行う断熱箱であって、前記断熱箱は、蓋板と、周囲に立設される側板と、底板とによって密封された箱体からなり、前記蓋板と前記底板と前記側板は、同一の熱伝導率λ＝ｋｃａｌ／ｍ・ｈ・℃を有する断熱材からなり、前記蓋板と前記底板の肉厚ｔ１が、少なくとも前記側板の肉厚ｔ２に対し、２．２ｔ２＞ｔ１＞１．２ｔ２の範囲にある断熱材からなる構成でもある。 Further, the heat insulation box according to the present invention is a heat insulation box for storing a cold-insulated warm material and a cold storage warming agent therein to cool or keep the cold-warm material, and the thermal insulation box includes a cover plate, a surrounding The lid plate, the bottom plate, and the side plate are made of a heat insulating material having the same thermal conductivity λ = kcal / m · h · ° C. , the thickness t 1 of the bottom plate and the cover plate, and the wall thickness t 2 of at least said side plates, also a construction consisting of 2.2 t 2> t 1> 1.2 t insulation material in the range of 2.
　また、本発明の断熱箱に使用する断熱材の熱伝導率λの値は、λ＝０．０５ｋｃａｌ／ｍ・ｈ・℃～０．００１５ｋｃａｌ／ｍ・ｈ・℃の範囲の断熱素材からなる構成である。 The heat conductivity λ of the heat insulating material used in the heat insulating box of the present invention is composed of a heat insulating material in the range of λ = 0.05 kcal / m · h · ° C. to 0.0015 kcal / m · h · ° C. It is.
　また、前記断熱箱は、蓄冷温剤を収納する蓄冷温剤収納部と、被保冷温物を収納する被保冷温物収納部と、前記蓄冷温物収納部と前記被冷温物収納部とを仕切る相互の空気流通を遮断する断熱材からなる断熱仕切板と、からなる構成である。
　また、前記断熱箱は、蓄冷温剤を収納する蓄冷温剤収納部と、被保冷温物を収納する被保冷温物収納部と、前記蓄冷温物収納部と前記被冷温物収納部とを仕切る断熱材から成る断熱仕切板からなり、前記断熱仕切板は、相互の空気を流通可能とするため、板を貫通する単一のまたは複数からなる孔を穿設した構成でもある。 The heat insulation box includes a regenerator / warmant storage unit that stores a regenerator / warmth agent, a cold-warm / warmth-warm storage unit that stores a cold-warm / warmth material, It is the structure which consists of a heat insulation partition plate which consists of a heat insulating material which interrupts | blocks the mutual air circulation which partitions off.
The heat insulation box includes a regenerator / warmant storage unit that stores a regenerator / warmth agent, a cold-warm / warmth-warm storage unit that stores a cold-warm / warmth material, It consists of a heat insulating partition plate made of a heat insulating material for partitioning, and the heat insulating partition plate has a configuration in which a single hole or a plurality of holes penetrating the plate are formed so that mutual air can flow.
　また、前記蓄冷温剤は、容器と、該容器内に収納するゲル状の蓄冷温用内容物からなる構成である。また、前記蓄冷温剤収納部に収納する蓄冷温剤は、前記蓄冷温剤収納部内の空気の対流を抑制するため、前記蓄冷温剤収納部に収納可能な最大体積となるとともに蓄冷温剤の表面積が最小となるように、前記蓄冷温剤収納部内側寸法に対応する形状からなる単一の蓄冷温剤である構成である。 Further, the cold storage warming agent is composed of a container and a gel-like content for cold storage temperature stored in the container. The regenerator / heater stored in the regenerator / heater storage unit has a maximum volume that can be stored in the regenerator / heater storage unit in order to suppress air convection in the regenerator / heater storage unit. It is the structure which is a single cold storage warming agent which consists of a shape corresponding to the said cold storage warming agent storage part inside dimension so that a surface area may become the minimum.
　また、前記蓄冷温剤収納部に収納する蓄冷温剤は、前記蓄冷温剤収納部内の空気の対流を抑制するため、前記蓄冷温剤収納部内に隙間なく積層配置可能な形状からなる構成である。 In addition, the cold storage warming agent stored in the cold storage warming agent storage unit is configured to have a shape that can be stacked in the cold storage warming agent storage unit without a gap in order to suppress convection of air in the cold storage warming agent storage unit. .
　更に、前記蓄冷温剤収納部は、内部の空気対流を抑制するため、前記蓄冷温剤を前記蓄冷温剤収納部内に積層配置するとともに、形成された隙間に軽量充填包装材からなる空気対流抑制材を配置した構成である。 Furthermore, in order to suppress internal air convection, the cold storage warming agent storage part arranges the cold storage warming agent in the cold storage warming agent storage part and suppresses air convection made of a lightly filled packaging material in the formed gap. It is the structure which has arrange | positioned material.
　本発明は、上記詳述した通りの構成であるので、以下のような効果がある。
１．蓋板と底板の熱通過率（熱貫流率）Ｋ１と側板の熱通過率（熱貫流率）Ｋ２の断熱効果の割合が、Ｋ１＜Ｋ２の範囲からなる断熱材としたため、主に断熱箱の上下（蓋面と底面）からの熱の貫流（漏出）を遮断し、断熱効率の良い断熱箱を提供できる。
２．蓋板と底板と側板が同一の熱伝導率を有する断熱材からなり、さらに蓋板と底板の肉厚ｔ１が、少なくとも側板の肉厚ｔ２に対して２．２ｔ２＞ｔ１＞１．２ｔ２の範囲にある断熱材としたため、断熱箱の上下における熱の貫流（漏出）を遮断でき、断熱効率の良い断熱箱を提供できる。 Since the present invention is configured as described in detail above, the following effects are obtained.
1. The ratio of the insulating effect of the cover plate and the heat transfer coefficient of the bottom plate (heat transmission coefficient) K 1 and the side plate heat transfer coefficient of the (heat transmission coefficient) K 2 has a heat insulating material made from the range of K 1 <K 2, the main Further, it is possible to provide a heat insulation box with good heat insulation efficiency by blocking heat flow (leakage) from the top and bottom (the cover surface and the bottom surface) of the heat insulation box.
2. The lid plate, the bottom plate, and the side plate are made of a heat insulating material having the same thermal conductivity, and the thickness t 1 of the lid plate and the bottom plate is at least 2.2 t 2 > t 1 > 1 with respect to the thickness t 2 of the side plate. Since the heat insulating material is in the range of 2 t 2 , heat penetration (leakage) at the top and bottom of the heat insulating box can be blocked, and a heat insulating box with good heat insulating efficiency can be provided.
３．熱伝導率λの値を、λ＝０．０５ｋｃａｌ／ｍ・ｈ・℃～０．００１５ｋｃａｌ／ｍ・ｈ・℃の範囲の断熱素材としたため、上記１．、２．の効果が最大限に発揮でき、保冷温を長時間保つことが可能となる。
４．断熱箱を、蓄冷温剤収納部と被保冷温物収納部に区画し、各収納部をそれぞれ仕切るための断熱仕切板を設けたため、各収納部間の空気流通が遮断され、保冷剤や保温剤からの保冷温熱が必要以上に被保冷体や被保温体に与えられないこととなり、緩やかな保持熱を介して保冷温を長時間保つことが可能となる。 3. Since the thermal conductivity λ is a heat insulating material in the range of λ = 0.05 kcal / m · h · ° C. to 0.0015 kcal / m · h · ° C., the above 1. 2. The maximum effect can be exerted, and the cold temperature can be kept for a long time.
4). The heat insulation box is divided into a cool storage / warming agent storage part and a cold storage object storage part, and a heat insulating partition plate is provided for partitioning each storage part. The cold insulation temperature and heat from the agent will not be applied to the cold object or the warm material more than necessary, and the cold insulation temperature can be maintained for a long time through the gentle holding heat.
５．前記各構成により断熱効率の良い断熱箱としたため、断熱効率蓄冷温剤収納部と被冷温物収納部を区画する断熱仕切板が無い場合や、断熱仕切板に孔が設けられて空気が流通する場合であっても、蓋板と底板の断熱が良好であるため、保冷温を長時間保つことが可能となる。
６．蓄冷温剤は、ゲル状の蓄冷温用内容物を容器に収納する構成としたため、蓄冷温剤の凝固点後の流動性を抑え、熱の対流による熱損失を少なくし、容器同士および容器と蓄冷温剤収納部の間の隙間を最小限とすることが可能となり、蓄冷温剤収納部内の空気の対流を抑制して、効果的に保冷温を長時間保つことが可能となる。 5. Since each of the above-described structures is a heat insulation box with good heat insulation efficiency, there is no heat insulation partition plate that partitions the heat insulation efficiency cold storage agent storage unit and the cold object storage unit, or there is a hole in the heat insulation partition plate so that air flows. Even in this case, since the heat insulation between the cover plate and the bottom plate is good, the cold insulation temperature can be maintained for a long time.
6). The cold storage warming agent is configured to store the gel-like contents for cold storage temperature in the container, so the fluidity after the freezing point of the cold storage warming agent is suppressed, heat loss due to heat convection is reduced, and the containers and the container and the cold storage The gap between the warming agent storage units can be minimized, and the convection of air in the cold storage warming agent storage unit can be suppressed to effectively keep the cold insulation temperature for a long time.
７．蓄冷温剤を蓄冷温剤収納部内側寸法に対応する形状としたため、蓄冷温剤が蓄冷温剤収納部に収納可能な最大体積となると同時に蓄冷温剤の表面積が最小となり、蓄冷温剤収納部内の空気の対流を抑制することが可能となる。
８．蓄冷温剤を蓄冷温剤収納部内に隙間なく積層配置可能な形状としたため、蓄冷温剤収納部内に空気が入りにくくなり、空気の対流を抑制することが可能となる。 7). Because the cool storage warming agent has a shape that corresponds to the inside dimensions of the cool storage warming agent storage part, the maximum amount of the cool storage warming agent that can be stored in the cold storage warming agent storage part and at the same time the surface area of the cold storage warming agent is minimized, so It becomes possible to suppress the air convection.
8). Since the cold storage warming agent has a shape that can be stacked and disposed in the cold storage warming agent storage part without any gap, it becomes difficult for air to enter the cold storage warming agent storage part, and convection of air can be suppressed.
９．蓄冷温剤を蓄冷温剤収納部内に積層配置した際に形成された隙間に空気対流抑制材を配置する構成としたため、蓄冷温剤収納部内に空気が入りにくくなり、空気の対流を抑制することが可能となる。 9. Since the air convection suppressing material is arranged in the gap formed when the cold storage warming agent is stacked and arranged in the cold storage warming agent storage part, it becomes difficult for air to enter the cold storage warming agent storage part and suppresses air convection. Is possible.
　以下、本発明に係る断熱箱を、図面に示す実施例に基づいて詳細に説明する。図１は、本発明に係る蓋板・底板と側板の熱通過率（熱貫流率）を変えた断熱箱の側面断面図であり、図２は、蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図である。図３は、蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図であり、図４は、蓋板・底板と側板を同じ肉厚とした断熱箱の側面断面図である。図５は、断熱仕切板を有する蓋板・底板と側板の熱通過率（熱貫流率）を変えた断熱箱の側面断面図であり、図６は、断熱仕切板を有する蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図である。図７は、蓄冷剤と被保冷物を収納した状態の断熱仕切板を有する断熱箱の側面断面図であり、図８は、蓄温剤と被保温物を収納した状態の断熱仕切板を有する断熱箱の側面断面図である。図９は、単一の蓄冷剤と被保冷物を収納した状態の断熱仕切板を有する断熱箱の側面断面図であり、図１０は、複数の蓄冷剤を収納した状態の断熱仕切板を有する断熱箱の側面断面図である。図１１は、従来の断熱箱の側面断面図であり、図１２は、本発明に係る断熱箱の保冷温実験に係る結果を示す図である。 Hereinafter, the heat insulation box according to the present invention will be described in detail based on the embodiments shown in the drawings. FIG. 1 is a side sectional view of a heat insulating box in which the heat passing rate (heat transmissivity) of the lid plate / bottom plate and the side plate according to the present invention is changed, and FIG. 2 shows the change in the thickness of the lid plate / bottom plate and the side plate. It is side surface sectional drawing of the heat insulation box. FIG. 3 is a side sectional view of a heat insulating box in which the thickness of the lid plate / bottom plate and the side plate is changed, and FIG. 4 is a side sectional view of the heat insulating box in which the thickness of the lid plate / bottom plate and the side plate is the same. FIG. 5 is a side cross-sectional view of a heat insulating box in which the heat passing rate (heat transmissivity) of the cover plate / bottom plate and the side plate having the heat insulating partition plate is changed, and FIG. It is side surface sectional drawing of the heat insulation box which changed the thickness of the side plate. FIG. 7 is a side cross-sectional view of a heat insulating box having a heat insulating partition plate in a state in which a cool storage agent and a cold object are stored, and FIG. 8 has a heat insulating partition plate in a state in which the heat storage agent and a heat stored material are stored. It is side surface sectional drawing of a heat insulation box. FIG. 9 is a side cross-sectional view of a heat insulating box having a heat insulating partition plate in a state in which a single cold storage agent and an object to be cooled are stored, and FIG. 10 has a heat insulating partition plate in a state in which a plurality of cold storage agents are stored. It is side surface sectional drawing of a heat insulation box. FIG. 11 is a side cross-sectional view of a conventional heat insulation box, and FIG. 12 is a view showing a result of a cold insulation temperature experiment of the heat insulation box according to the present invention.
　本発明の断熱箱１０は、蓋板２０と、周囲に立設される側板３０と、底板４０とによって密封された箱体からなり、主に内部に被保冷温物と蓄冷温剤を収納して被保冷温物の保冷または保温を行うための箱であり、収納物の保冷温を長時間保つことができる保冷温性および断熱効率を高めた、低コストで製造可能な断熱箱である。 The heat insulation box 10 of the present invention is composed of a box body sealed by a cover plate 20, a side plate 30 erected around the periphery, and a bottom plate 40, and mainly stores a cold insulation material and a regenerator material inside. This is a heat insulation box that can be manufactured at a low cost, and is a box for keeping the temperature of the object to be kept cold or keeping the temperature of the stored object for a long time.
　断熱箱１０は、図１および図２に示すように、本実施例では、蓋板２０と、側板３０と、底板４０とによって密封された直方体により構成されているが、箱体の形状は直方体に限定されるものではなく、円筒形状や台形柱のように略平行である上面と下面を有する立体形状であればよい。 As shown in FIGS. 1 and 2, the heat insulation box 10 is configured by a rectangular parallelepiped sealed by a cover plate 20, a side plate 30, and a bottom plate 40 in the present embodiment, but the shape of the box is a rectangular parallelepiped. The shape is not limited to the above, and any solid shape having a substantially parallel upper and lower surfaces such as a cylindrical shape or a trapezoidal column may be used.
　断熱箱１０の第一の実施例として、図１に示すように、蓋板２０と底板４０は、相互に略等しい熱通過率（熱貫流率）を有する断熱材からなる構成となっている。蓋板２０および底板４０を構成する断熱材の熱通過率（熱貫流率）は、定数Ｋ１［ｋｃａｌ／ｍ２・ｈ・℃］で表すことが可能である。また、側板３０は、蓋板２０と底板４０と異なる熱通過率（熱貫流率）を有する断熱材からなる構成となっている。側板３０を構成する断熱材の熱通過率（熱貫流率）は、定数Ｋ２［ｋｃａｌ／ｍ２・ｈ・℃］で表すことができる。また、熱通過率（熱貫流率）Ｋ１とＫ２は、Ｋ１＜Ｋ２の関係となる事が本発明のポイントとなっている。蓋板２０と底板４０を構成する断熱材の熱通過率（熱貫流率）が側板３０を構成する断熱材の熱通過率（熱貫流率）と比較して小さい事が必要となる。後述するように、箱体の断熱効果を上げるには、側板より、蓋板および底板の断熱効率を高めることが効果的であることが判明しているため、側板３０として断熱効果が低い安価な断熱材を利用し、蓋板２０と底板４０には断熱効果の高い断熱材を使用する事により、低コストで最大限の断熱効果を発揮する断熱箱１０を提供する事が可能となる。 As a first embodiment of the heat insulating box 10, as shown in FIG. 1, the cover plate 20 and the bottom plate 40 are made of a heat insulating material having substantially the same heat passage rate (heat transmissivity). The heat passage rate (heat transmissivity) of the heat insulating material constituting the cover plate 20 and the bottom plate 40 can be represented by a constant K 1 [kcal / m 2 · h · ° C.]. Further, the side plate 30 is composed of a heat insulating material having a different heat passage rate (heat transmissivity) from the lid plate 20 and the bottom plate 40. The heat passage rate (heat flow rate) of the heat insulating material constituting the side plate 30 can be represented by a constant K 2 [kcal / m 2 · h · ° C.]. In addition, it is a point of the present invention that the heat passing rates (heat transmissivity) K 1 and K 2 have a relationship of K 1 <K 2 . It is necessary that the heat passage rate (heat flow rate) of the heat insulating material constituting the cover plate 20 and the bottom plate 40 is smaller than the heat flow rate (heat flow rate) of the heat insulating material constituting the side plate 30. As will be described later, in order to increase the heat insulation effect of the box, it has been found that it is more effective to increase the heat insulation efficiency of the cover plate and the bottom plate than the side plate. By using a heat insulating material and using a heat insulating material having a high heat insulating effect for the cover plate 20 and the bottom plate 40, it is possible to provide the heat insulating box 10 that exhibits the maximum heat insulating effect at a low cost.
　従来の断熱箱は、図１１に示すように、蓋板、底板、側板は全て同じ部材で形成されているのが通常一般に見られる構造であり、いずれかの熱通過率（熱貫流率）が異なる（素材を異にする）ような構造の箱は作成されていなかった。また、特開２００３－１２８１６３号公報に示されているように、蓋板に断熱材を取り付けない構造のものが存在していたが、このような構成の場合は、逆に保冷効率が悪くなるという問題が存在していた。 As shown in FIG. 11, the conventional heat insulation box has a structure that is generally seen that the cover plate, the bottom plate, and the side plate are all formed of the same member. A box with a different structure (with different materials) was not created. Further, as disclosed in Japanese Patent Application Laid-Open No. 2003-128163, there is a structure in which a heat insulating material is not attached to the cover plate. However, in such a configuration, on the contrary, the cooling efficiency is deteriorated. There was a problem.
　本発明に係る断熱箱１０の保冷・保温実験の実験結果を、図１２に示す。これらの実験は、蓋板と底板の肉厚、および側板の肉厚を変更する事によって各板の熱通過率を変える方法により、断熱箱が奏する断熱（保冷）効果の測定を行ったものである。 FIG. 12 shows the experimental results of the cold insulation / heat insulation experiment of the heat insulation box 10 according to the present invention. In these experiments, the heat insulation (cooling) effect produced by the heat insulation box was measured by changing the heat passage rate of each plate by changing the thickness of the cover plate and the bottom plate, and the thickness of the side plate. is there.
　本実験においては、断熱箱として約３０ｃｍ四方の内部空間を有するとともに内部を後述する断熱仕切板で仕切った構成である本発明に係る箱体を使用し、内部に格納した保冷剤および被保冷物の温度が所定の温度に達するまでの時間を測定した。 In this experiment, the box according to the present invention, which has an internal space of about 30 cm square as a heat insulating box and is partitioned by a heat insulating partition plate to be described later, is used to store the cold storage agent and the object to be cooled. The time until the temperature reached a predetermined temperature was measured.
　断熱板にはＸＰＳ（押出ポリスチレン）を使用し、ＸＰＳの使用枚数を増加することによって肉厚を変更する事とした。また、保冷材としてパックに格納したブロック状の氷３００ｇを蓄冷材収納部に格納し、被保冷物として水６００ｍｌを入れたペットボトルをダミーとして被保冷物収納部に格納する事とした。なお、実験時の外気温は概ね３２℃乃至３４℃であった。 The XPS (extruded polystyrene) was used for the heat insulating plate, and the thickness was changed by increasing the number of XPS used. Further, 300 g of block-shaped ice stored in a pack as a cold insulation material is stored in the cold storage material storage section, and a plastic bottle containing 600 ml of water as a cold storage object is stored as a dummy in the cold storage object storage section. The outside air temperature during the experiment was approximately 32 ° C. to 34 ° C.
　測定方法としては、蓄冷材収納部内の温度Ｔ１＝－１８℃、被保冷物収納部内の温度Ｔ２＝－１８℃として、Ｔ１、Ｔ２がそれぞれ概ね－２℃乃至－１℃となるまでの経過時間を測定した。 As a measurement method, assuming that the temperature T 1 in the regenerator storage unit is −18 ° C. and the temperature T 2 in the cold storage unit storage unit is −18 ° C., T 1 and T 2 are approximately −2 ° C. to −1 ° C., respectively. The elapsed time until was measured.
　本実験結果によると、まず、蓋板、底板、側板をそれぞれＸＰＳ１枚で構成した場合、冷熱の保持時間は９時間乃至１０時間であった（図１２の１）。蓋板、底板、側板のそれぞれの肉厚を、図４に示すように、均等に１枚ずつ足した場合（蓋板、底板、側板をそれぞれＸＰＳ２枚で構成）には、冷熱の保持時間は１２時間乃至１３時間となり、断熱効果が高くなることが確認できる（図１２の２）。次に、図３に示すように、側板の肉厚はそのままとし、蓋板と底板の肉厚を１枚足して測定したところ（蓋板、底板をＸＰＳ３枚、側板をＸＰＳ２枚で構成）、冷熱の保持時間は１５時間乃至１６時間となり（図１２の３）、蓋板と底板の厚みを増す（熱通過率を下げる）ことのみによって、大幅な保温・断熱効果を得られることが確認された。 According to the results of this experiment, first, when the cover plate, the bottom plate, and the side plate were each composed of one XPS, the cold heat retention time was 9 to 10 hours (1 in FIG. 12). As shown in FIG. 4, when the thickness of each of the lid plate, the bottom plate, and the side plate is evenly added one by one (the lid plate, the bottom plate, and the side plate are each composed of two XPS), the holding time of the cold time is From 12 hours to 13 hours, it can be confirmed that the heat insulation effect is enhanced (2 in FIG. 12). Next, as shown in FIG. 3, the thickness of the side plate is kept as it is, and the thickness of the lid plate and the bottom plate is added and measured (the cover plate, the bottom plate is composed of 3 XPS, and the side plate is composed of 2 XPS). The holding time of cold heat is 15 hours to 16 hours (3 in FIG. 12), and it is confirmed that a significant heat insulating and heat insulating effect can be obtained only by increasing the thickness of the cover plate and the bottom plate (lowering the heat transfer rate). It was.
　更に、側板の肉厚を１枚足して測定したところ（蓋板、底板、側板それぞれＸＰＳ３枚で構成）、冷熱の保持時間は１５時間乃至１６時間となり（図１２の４）、側板が２枚のものと比べて保温・断熱効果に変化がなく、側板が保温・断熱効果に与える影響は蓋板および底板と比べて小さいことが確認された。 Furthermore, when the thickness of the side plate was added and measured (composed of 3 XPS each for the lid plate, bottom plate, and side plate), the cooling time was 15 to 16 hours (4 in FIG. 12), and 2 side plates were used. It was confirmed that there was no change in the heat insulation and heat insulation effect compared with the ones of the above, and the influence of the side plate on the heat insulation and heat insulation effect was small compared to the cover plate and the bottom plate.
　次に、同様に側板の肉厚はそのままとし、蓋板と底板の肉厚を１枚足して測定したところ（蓋板、底板をＸＰＳ４枚、側板をＸＰＳ３枚で構成）、冷熱の保持時間が更に増加して１７時間乃至１８時間となり（図１２の５）、再度、蓋板と底板の厚みを増すことのみによって、より効率的な保温・断熱効果が得られることが確認された。 Next, similarly, the thickness of the side plate is left as it is, and the thickness of the lid plate and the bottom plate is added and measured (comprising 4 lids, 4 XPS for the bottom plate, and 3 XPS for the side plate), and the cooling time is kept. It was further increased to 17 to 18 hours (5 in FIG. 12), and it was confirmed that a more efficient heat insulating and heat insulating effect can be obtained only by increasing the thickness of the cover plate and the bottom plate again.
　上記実験結果から考察すると、側板の肉厚を蓋板、底板より薄い状態としても、蓋板、底板、側板のそれぞれの肉厚を均等に増した場合と比較して、内容物が溶解する時間に大差がないのではないかと推測される。すなわち、蓋板、底板の肉厚と側板の熱通過率のバランスが取れている場合には、蓋板と底板の断熱板の肉厚が充分にとれていれば（蓋板と底板の熱通過率が充分に低ければ）、側板の枚数を節約しても（側板を熱通過率の高い安価な素材を選択しても）、充分な保温・断熱効果が得られると考えてよいと思われる。 Considering from the above experimental results, even when the thickness of the side plate is thinner than the lid plate and the bottom plate, the time for the contents to dissolve is compared with the case where the thickness of each of the lid plate, the bottom plate and the side plate is increased evenly. It is speculated that there is no big difference. That is, if the thickness of the cover plate and the bottom plate and the heat transfer rate of the side plate are balanced, if the thickness of the heat insulation plate of the cover plate and the bottom plate is sufficient (the heat transfer between the cover plate and the bottom plate) If the rate is sufficiently low), even if the number of side plates is saved (even if the side plate is made of an inexpensive material with a high heat transfer rate), it may be considered that sufficient heat insulation and heat insulation effects can be obtained. .
　このような結果となる理由としては、以下のように考えられる。
　空間内において、温度の高い空気は上昇し、温度の低い空気は下降する。冷却を行う場合を考えると、蓄冷剤を断熱仕切板で仕切られた断熱箱内の上段に配置すると、蓄冷剤が発する冷熱が仕切板を介して下段の空間内に伝達され、該冷熱によって冷却された下段の空気は、断熱箱の底板に向けて下降する。一方で、該冷気よりも温度が高い空気は冷気と入れ替わるように上昇して断熱仕切板の裏に到達し、仕切板を介して蓄冷剤によって冷却される。これにより、蓄冷剤の投入設置直後は、空気の対流が発生することになると考えられる。 The reason for such a result is considered as follows.
In the space, high temperature air rises and low temperature air drops. Considering the case of cooling, if the cool storage agent is placed in the upper stage in the heat insulation box partitioned by the heat insulating partition plate, the cool heat generated by the cool storage agent is transmitted to the lower space through the partition plate and cooled by the cool heat. The lower air thus formed descends toward the bottom plate of the heat insulation box. On the other hand, the air whose temperature is higher than that of the cold air rises so as to replace the cold air, reaches the back of the heat insulating partition plate, and is cooled by the cold storage agent via the partition plate. As a result, it is considered that air convection occurs immediately after the installation of the cool storage agent.
　ここで、冷気が下降して断熱箱の底板に到達すると、断熱箱の底板から貫流する外気からの温熱により冷気が温められることとなる。一方、冷気は側板に沿って下降することから、側板から貫流する温熱からも影響を受けるが、受ける影響は一時的なものである。むしろ、下降した冷気が長時間に渡って停滞する底板の断熱性が重要となると考えられる。 Here, when the cool air descends and reaches the bottom plate of the heat insulation box, the cold air is heated by the heat from the outside air flowing from the bottom plate of the heat insulation box. On the other hand, since cold air descends along the side plate, it is also affected by the heat flowing through the side plate, but the effect is temporary. Rather, it is considered that the heat insulating property of the bottom plate in which the descending cold air stagnates for a long time is important.
　すなわち、底板の断熱性が高い（熱通過率（熱貫流率）が低い）場合には、断熱箱内部は、外部の熱の影響を受け難くなり、結果として冷却状態の持続時間が長くなるということが出来る。 That is, when the heat insulating property of the bottom plate is high (the heat passage rate (heat flow rate) is low), the inside of the heat insulating box is hardly affected by external heat, and as a result, the duration of the cooling state is prolonged. I can do it.
　次に、断熱箱上部について検討すると、断熱仕切板で仕切られた断熱箱内の上段に配置した蓄冷剤は、冷熱を断熱仕切板を介して下段の被保冷物に伝達し、被保冷物を冷却するが、蓄冷剤が発する冷熱は同時に上段の空間内にも留まる。このとき、蓋板から外部の温熱が内部に貫流するため、蓄冷剤が貫流し続ける温熱により温められる事となるが、本実施例のように蓋体の断熱性が高い（熱通過率（熱貫流率）が低い）場合には、外部上方向からの温熱の浸入は内部に伝達し難くなり、蓋体の断熱性が高いほど、内部の冷温はより保たれることとなる。なお、側板から貫流する温熱から受ける影響は一時的なものであるため、蓋板の断熱性がより重要になる事が判明した事による構造上の改良と考えられる。 Next, considering the upper part of the heat insulation box, the cold storage agent placed in the upper stage in the heat insulation box partitioned by the heat insulation partition plate transmits cold heat to the lower cold object through the heat insulation partition plate, Although it cools, the cold heat which a cool storage agent emits also stays in the upper space at the same time. At this time, since the external heat flows from the cover plate to the inside, it is heated by the heat that the cool storage agent continues to flow through, but the heat insulating property of the cover is high as in this embodiment (heat transmission rate (heat When the penetration rate is low), the penetration of warm heat from the outside upward direction is difficult to be transmitted to the inside, and the higher the heat insulation of the lid, the more the cold temperature inside is kept. In addition, since the influence received from the heat flowing through from the side plate is temporary, it is considered to be a structural improvement due to the fact that the heat insulating property of the lid plate becomes more important.
　上記事象は、冷却ではなく保温を行う際にも同様と考えられる。この場合、被保温物の配置箇所は上下逆となり、上昇した暖気の冷却を抑えることがポイントになる。
　すなわち、断熱箱を構成する蓋板、側板および底板は、断熱箱の上下に配置される蓋板および底板の熱通過率（熱貫流率）Ｋ１を側板のＫ２より低くした場合であっても、断熱効果を維持する事が可能ということが出来る。 The above-mentioned phenomenon is considered to be the same when performing heat insulation instead of cooling. In this case, the location of the object to be warmed is turned upside down, and the point is to suppress the cooling of the raised warm air.
That is, the cover plate constituting the heat insulating box, the side plates and the bottom plate, the lid and bottom plates heat transfer coefficient of which is disposed above and below the heat insulating box (heat transmission coefficient) K 1 in a case where it is lower than the K 2 of the side plate However, it can be said that the heat insulation effect can be maintained.
　本発明に係る断熱箱１０の第二の実施例として、図２および図３に示すように、蓋板２０と側板３０と底板４０は、同一の熱伝導率を有する断熱材からなる構成となっている。蓋板２０と側板３０と底板４０を構成する断熱材の熱伝導率は、定数λ［ｋｃａｌ／ｍ・ｈ・℃］で表すことが可能である。 As a second embodiment of the heat insulation box 10 according to the present invention, as shown in FIGS. 2 and 3, the cover plate 20, the side plate 30, and the bottom plate 40 are made of a heat insulating material having the same thermal conductivity. ing. The thermal conductivity of the heat insulating material constituting the cover plate 20, the side plate 30, and the bottom plate 40 can be expressed by a constant λ [kcal / m · h · ° C.].
　また、各断熱材の肉厚をｔｎ［ｍｍ］で表すこととすると、蓋板２０と底板４０の肉厚ｔ１と、側板３０の肉厚ｔ２との関係は、
　　　２．２ｔ２＞ｔ１＞１．２ｔ２
　で表される。すなわち、蓋板２０と底板４０の肉厚ｔ１は、側板３０の肉厚ｔ２より厚く、ｔ２の１．２～２．２倍の肉厚で構成される。蓋板２０と側板３０と底板４０は、同一の熱伝導率を有する断熱材からなるため、肉厚の板の方が断熱効率が高いこととなる。 Moreover, if the thickness of each heat insulating material is represented by t n [mm], the relationship between the thickness t 1 of the cover plate 20 and the bottom plate 40 and the thickness t 2 of the side plate 30 is:
2.2t 2 > t 1 > 1.2t 2
It is represented by That is, the thickness t 1 of the lid plate 20 and the bottom plate 40 is thicker than the thickness t 2 of the side plate 30 and is 1.2 to 2.2 times as thick as t 2 . Since the cover plate 20, the side plate 30, and the bottom plate 40 are made of a heat insulating material having the same thermal conductivity, a thicker plate has higher heat insulating efficiency.
　前述のように、箱体の断熱効果を上げるには、側板より、蓋板および底板の断熱効率を高めることが効果的であることから、第二の実施例の構成とすることにより、側板３０を薄く低コストで構成することが可能であるとともに、蓋板２０と底板４０を厚くする事によって充分な断熱効果を発揮でき、低コストで最大限の断熱効果を発揮する断熱箱１０を構成する事が実現可能となる。すなわち、断熱箱の全体を均等に断熱する事より、側板断熱を薄くした分を蓋板、底板に加えた方が断熱効果高くなるため、断熱板の材料費の削減となる。 As described above, in order to increase the heat insulation effect of the box, it is effective to increase the heat insulation efficiency of the cover plate and the bottom plate from the side plate. The heat insulating box 10 can be configured to be thin and low cost, and can exhibit a sufficient heat insulating effect by increasing the thickness of the cover plate 20 and the bottom plate 40, and exhibit the maximum heat insulating effect at a low cost. Things can be realized. That is, the heat insulation effect becomes higher when the side plate heat insulation is thinned to the lid plate and the bottom plate than when the entire heat insulation box is uniformly insulated, thereby reducing the material cost of the heat insulation plate.
　第一の実施例、第二の実施例で使用している蓋板２０と側板３０と底板４０に用いる断熱材は熱伝導率λで表すことが可能であり、λ＝０．０５ｋ［ｃａｌ／ｍ・ｈ・℃］～０．００１５［ｋｃａｌ／ｍ・ｈ・℃］の範囲の断熱素材で構成することが可能である。この範囲内の断熱材としては、真空断熱材（約０．００３５［ｋｃａｌ／ｍ・ｈ・℃］）や発泡スチロール（約０．０３５ｋ［ｃａｌ／ｍ・ｈ・℃］）が考えられる。すなわち、この範囲内の断熱材を用いる事により、断熱効率の良い、効果的な断熱効果を発揮する断熱箱を構成する事が可能となるとともに、コストパフォーマンスにも優れた断熱箱に改良することが可能となる。 The heat insulating material used for the cover plate 20, the side plate 30 and the bottom plate 40 used in the first embodiment and the second embodiment can be expressed by a thermal conductivity λ, and λ = 0.05 k [cal / m · h · ° C.] to 0.0015 [kcal / m · h · ° C.]. As a heat insulating material within this range, a vacuum heat insulating material (about 0.0035 [kcal / m · h · ° C.]) or a polystyrene foam (about 0.035 k [cal / m · h · ° C.]) can be considered. In other words, by using a heat insulating material within this range, it is possible to construct a heat insulating box with good heat insulating efficiency and an effective heat insulating effect, and to improve the heat insulating box with excellent cost performance. Is possible.
　断熱箱１０は、図５および図６に示すように、蓄冷温剤８０を収納する蓄冷温剤収納部５０と、被保冷温物９０を収納する被保冷温物収納部６０とが設けられた構成となっている。また、蓄冷温物収納部５０と被冷温物収納部６０との間には断熱仕切板７０が設けられる構成である。断熱仕切板７０は、断熱箱１０内部を上下に分断するように配置されており、蓄冷温物収納部５０と被冷温物収納部６０を仕切って相互の空気流通を遮断する役割を果たす。断熱仕切板７０は、本実施例では、発泡スチロールや真空断熱板などの断熱材により構成されるが、これに限定されることはなく、他の断熱効果を有する材質であれば適宜選択する事が可能である。また、本実施例では、断熱仕切板７０は、蓋板２０、側板３０および底板４０と同じ材質を使用しているが、断熱効果を有する素材であれば、異なる材質を適宜選択して使用してもよい。 As shown in FIG. 5 and FIG. 6, the heat insulation box 10 is provided with a cold storage / warming agent storage 50 for storing the cold storage / warming agent 80 and a cold / warm storage container 60 for storing the cold / warmth 90. It has a configuration. Moreover, it is the structure by which the heat insulation partition plate 70 is provided between the cool storage warm material storage part 50 and the to-be-cooled material storage part 60. FIG. The heat insulating partition plate 70 is arranged so as to divide the inside of the heat insulating box 10 in the vertical direction, and plays a role of partitioning the cold storage material storage unit 50 and the cold object storage unit 60 and blocking mutual air circulation. In the present embodiment, the heat insulating partition plate 70 is made of a heat insulating material such as a polystyrene foam or a vacuum heat insulating plate, but is not limited thereto, and may be appropriately selected as long as it is a material having other heat insulating effects. Is possible. In this embodiment, the heat insulating partition plate 70 uses the same material as that of the cover plate 20, the side plate 30, and the bottom plate 40. However, if the material has a heat insulating effect, a different material is appropriately selected and used. May be.
　なお、図５および図６は、蓄冷剤８２ａを使用して被保冷物９２ａの冷却・保冷を行う実施例を示すものであり、上段に蓄冷温物収納部５０を配置し、下段に被冷温物収納部６０を配置しているが、蓄温剤８２ｂを使用して被保温物９２ｂの加熱・保温を行う場合には、図８に示すように、上段に被保冷温物収納部６０を配置し、下段に蓄冷温物収納部５０を配置することにより、加熱・保温を実現する事が可能である。 5 and 6 show an embodiment in which the cool storage material 92a is cooled and cooled by using the cool storage agent 82a. The cool storage temperature storage unit 50 is disposed in the upper stage, and the cool temperature is stored in the lower stage. Although the object storage part 60 is arrange | positioned, when using the heat storage agent 82b and heating / warming the to-be-heated object 92b, as shown in FIG. It is possible to realize heating and heat insulation by arranging and arranging the regenerator / warmth container 50 in the lower stage.
　断熱箱１０は、蓄冷温剤を収納する蓄冷温剤収納部５０と、被保冷温物を収納する被保冷温物収納部６０とを設け、これらを仕切る断熱材から成る断熱仕切板６０を設けるとともに、断熱仕切板６０には、図１１に示すように、単一のまたは複数からなる孔を穿設した構成とする事も可能である。この構成とすることにより、蓄冷温剤収納部５０と被保冷温物収納部６０間の相互の空気を流通可能となり、素早い温度伝達が可能となる。本来は、空気流通を抑制する事で、より長時間における蓄冷温が可能となるが、図１乃至図４に示すように、蓄冷温剤収納部と被冷温物収納部を区画する断熱仕切板が無い場合や、図１１に示すように、断熱仕切板に孔が設けられて空気が流通する場合であっても、前述のように、蓋板と底板の断熱が良好であるため、保冷温を長時間保つことが可能となった。 The heat insulation box 10 is provided with a cold storage / warming agent storage unit 50 for storing a cold storage warming agent and a cold storage material storage unit 60 for storing a cold storage material, and is provided with a heat insulation partition plate 60 made of a heat insulating material for partitioning them. In addition, as shown in FIG. 11, the heat insulating partition plate 60 may have a structure in which a single hole or a plurality of holes are formed. By setting it as this structure, it becomes possible to distribute | circulate the mutual air between the cool storage warming agent storage part 50 and the to-be-cooled warm material storage part 60, and a quick temperature transmission is attained. Originally, it is possible to store cold for a longer time by suppressing the air flow, but as shown in FIGS. 1 to 4, the heat insulating partition plate that partitions the cold storage agent storage unit and the cold object storage unit. As shown in FIG. 11, since the heat insulation between the cover plate and the bottom plate is good as described above, even when the air is circulated through the heat insulation partition plate as shown in FIG. Can be maintained for a long time.
　蓄冷温剤８０は、図７および図８に示すように、容器８４と、容器８４内に収納するゲル状の蓄冷温用内容物８６からなる構成である。蓄冷温剤８０の内容物である蓄冷温用内容物８６をゲル状とすることにより、凝固点より溶解後、流動性の無いゲル状のため対流が無く、流体等と比較して放熱が少なくより長時間に渡って蓄冷温剤の温度を一定に保つことが可能となる。これにより、より長時間に渡る断熱箱１０による保冷・保温が可能となった。 As shown in FIGS. 7 and 8, the cold storage warming agent 80 has a configuration including a container 84 and a gel-like cold storage temperature content 86 stored in the container 84. By making the cold storage temperature content 86, which is the content of the cold storage warming agent 80, into a gel form, after melting from the freezing point, there is no convection due to the non-flowable gel form, and there is less heat dissipation compared to fluids etc. It becomes possible to keep the temperature of the cold storage warming agent constant over a long period of time. Thereby, the cold insulation and the heat insulation by the heat insulation box 10 over a longer time became possible.
　蓄冷温剤８０は、図９に示すように、蓄冷温剤収納部５０の内側寸法に対応する形状からなる単一の蓄冷温剤によって構成することが可能である。すなわち、蓄冷温剤８０は、蓄冷温剤収納部５０内部を一の蓄冷温剤８０で埋め尽くすような形状で構成することが出来る。蓄冷温剤８０は、冷熱・温熱を放射し、外部からの熱に影響を受けて蓄冷温剤８０自体が保有する温度が変化する。このとき、蓄冷温剤８０と蓄冷温剤収納部５０の内壁間に隙間が存在すると、ここを空気が流通する。空気は、対流しながら外部より受けた冷温熱を緩やかに蓄冷温剤８０に伝達する役割を果たすことになるため、蓄冷温剤８０は温度変化しやすくなり、結果として、蓄冷温剤８０による保冷・保温時間が短縮される事となる。 As shown in FIG. 9, the cold storage warming agent 80 can be configured by a single cold storage warming agent having a shape corresponding to the inner dimension of the cold storage warming agent storage unit 50. That is, the cold storage warming agent 80 can be configured in such a shape that the inside of the cold storage warming agent storage unit 50 is filled with the single cold storage warming agent 80. The cold storage warming agent 80 radiates cold / hot heat, and the temperature of the cold storage warming agent 80 itself changes due to the influence of heat from the outside. At this time, if there is a gap between the cold storage warming agent 80 and the inner wall of the cold storage warming agent storage unit 50, air flows therethrough. The air plays a role of gently transmitting the cold / heat received from the outside to the cold storage warming agent 80 while convection, so that the temperature of the cold storage warming agent 80 is likely to change. As a result, the cold storage by the cold storage warming agent 80・ The insulation time will be shortened.
　蓄冷温剤８０を上記構造とすることにより、蓄冷温剤収納部５０内の空気の対流を抑制することが可能となる。
　また、蓄冷温剤８０はその表面積が広いと、その分冷温熱に接することとなり、保冷・保温時間が短縮されるため、表面積は出来るだけ狭い方が望ましい。本実施例のように、蓄冷温剤８０を単一の形状に構成することにより、その全表面積を狭くすることが可能となる。
　上記構造とすることで、蓄冷温剤８０は、蓄冷温剤収納部５０に収納可能な最大体積となるとともに蓄冷温剤８０の表面積を最小とすることができ、より長時間に渡る保冷・保温を実現する事が可能となる。 By making the cold storage warming agent 80 have the above structure, it becomes possible to suppress the convection of air in the cold storage warming agent storage unit 50.
Further, if the cold storage warming agent 80 has a large surface area, the cold storage heat agent 80 is in contact with the cooling heat and heat, and accordingly, the cold storage and heat retention time is shortened. Therefore, it is desirable that the surface area be as small as possible. By configuring the cold storage warming agent 80 in a single shape as in the present embodiment, it is possible to reduce the total surface area.
With the above structure, the cold storage warming agent 80 has a maximum volume that can be stored in the cold storage warming agent storage unit 50, and can minimize the surface area of the cold storage warming agent 80. Can be realized.
　また、蓄冷温剤８０は、図１０に示すように、蓄冷温剤収納部５０内に隙間なく積層配置可能な形状とすることが可能である。前述のように、蓄冷温剤収納部５０内に空気が流通すると、蓄冷温剤８０が接する空気の温度が常に変化することとなり、蓄冷温剤８０による保冷・保温時間が短縮される結果となる。蓄冷温剤８０を上記構成とすることにより、蓄冷温剤８０を蓄冷温剤収納部５０に収納した際に、蓄冷温剤収納部５０内の空気の対流が抑制されることとなり、より長時間に渡る保冷・保温を実現する事が可能となる。 Further, as shown in FIG. 10, the cold storage warming agent 80 can be formed into a shape that can be stacked and disposed in the cold storage warming agent storage unit 50 without a gap. As described above, when air flows through the cold storage / warming agent storage unit 50, the temperature of the air in contact with the cold storage / warming agent 80 always changes, resulting in a reduction in the cool / heat retention time of the cold storage / warming agent 80. . When the cold storage warming agent 80 is configured as described above, when the cold storage warming agent 80 is stored in the cold storage warming agent storage unit 50, the convection of the air in the cold storage warming agent storage unit 50 is suppressed, and a longer time is required. It is possible to achieve cold and warm insulation over a wide range.
　蓄冷温剤８０を蓄冷温剤収納部５０内に積層配置する際、蓄冷温剤８０間や、蓄冷温剤８０と内壁の間に隙間が形成される。蓄冷温剤収納部５０内は、形成された隙間に軽量充填包装材からなる空気対流抑制材５２を配置する構成とすることが可能である。この構成とすることにより、蓄冷温剤収納部５０内部の空気対流が抑制され、より長時間に渡る保冷・保温を実現する事が可能となる。 When stacking the cold storage warming agent 80 in the cold storage warming agent storage 50, a gap is formed between the cold storage warming agent 80 or between the cold storage warming agent 80 and the inner wall. The inside of the regenerator / warmant storage part 50 can be configured such that an air convection suppressing material 52 made of a lightweight filling and packaging material is disposed in the formed gap. By adopting this configuration, air convection inside the regenerator / heat agent storage unit 50 is suppressed, and it is possible to realize cold insulation and heat insulation for a longer time.
本発明に係る蓋板・底板と側板の熱通過率（熱貫流率）を変えた断熱箱の側面断面図Side surface sectional drawing of the heat insulation box which changed the heat passage rate (heat transmissivity) of the cover plate, bottom plate, and side plate which concern on this invention 蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図Side cross-sectional view of a heat insulation box with the thickness of the lid plate / bottom plate and side plate changed 蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図Side cross-sectional view of a heat insulation box with the thickness of the lid plate / bottom plate and side plate changed 蓋板・底板と側板を同じ肉厚とした断熱箱の側面断面図Side cross-sectional view of a heat insulation box with the same thickness for the lid / bottom plate and side plate 断熱仕切板を有する蓋板・底板と側板の熱通過率（熱貫流率）を変えた断熱箱の側面断面図Side sectional view of a heat insulation box with different heat passage rates (heat transmissivity) between the cover plate, bottom plate and side plate with heat insulation partition plates 断熱仕切板を有する蓋板・底板と側板の肉厚を変えた断熱箱の側面断面図Side sectional view of a heat insulation box with the wall thickness of the cover plate, bottom plate and side plate with heat insulation partition plates changed 蓄冷剤と被保冷物を収納した状態の断熱仕切板を有する断熱箱の側面断面図Side sectional view of a heat insulation box having a heat insulation partition plate in a state of storing a cold storage agent and a cold object. 蓄温剤と被保温物を収納した状態の断熱仕切板を有する断熱箱の側面断面図Side surface sectional view of a heat insulation box having a heat insulation partition plate in a state in which a heat storage agent and an object to be heated are stored. 単一の蓄冷剤と被保冷物を収納した状態の断熱仕切板を有する断熱箱の側面断面図Side sectional view of a heat insulating box having a heat insulating partition plate in a state where a single cold storage agent and a cold object are stored. 複数の蓄冷剤を収納した状態の断熱仕切板を有する断熱箱の側面断面図Side sectional view of a heat insulation box having a heat insulation partition plate in a state in which a plurality of cold storage agents are stored 従来の断熱箱の側面断面図Side sectional view of a conventional heat insulation box 本発明に係る断熱箱の保冷温実験に係る結果を示す図The figure which shows the result which concerns on the cold insulation temperature experiment of the heat insulation box which concerns on this invention
　１０　断熱箱
　２０　蓋板
　３０　側板
　４０　底板
　５０　蓄冷温剤収納部
　５２　空気対流抑制材
　６０　被保冷温物収納部
　７０　断熱仕切板
　８０　蓄冷温剤
　８２ａ　蓄冷剤
　８２ｂ　蓄温剤
　８４　容器
　８６　蓄冷温用内容物
　９０　被保冷温物
　９２ａ　被保冷物
　９２ｂ　被保温物
  DESCRIPTION OF SYMBOLS 10 Heat insulation box 20 Lid plate 30 Side plate 40 Bottom plate 50 Cold storage warm agent storage part 52 Air convection suppression material 60 Cooled warm material storage part 70 Thermal insulation partition plate 80 Cold storage warming agent 82a Cold storage agent 82b Thermal storage agent 84 Container 86 Cold storage temperature content Object 90 To-be-cold object 92a To-be-cold object 92b

Claims (9)

  1. 　内部に被保冷温物と蓄冷温剤を収納して被保冷温物の保冷または保温を行う断熱箱において、
    　前記断熱箱は、蓋板と、周囲に立設される側板と、底板とによって密封された箱体からなり、
    　前記蓋板と前記底板は、略等しい熱通過率（熱貫流率）Ｋ１＝ｋｃａｌ／ｍ２・ｈ・℃を有する断熱材からなるとともに、前記側板は、前記蓋板と前記底板と異なる熱通過率（熱貫流率）Ｋ２＝ｋｃａｌ／ｍ２・ｈ・℃を有する断熱材からなり、
    　前記熱通過率（熱貫流率）Ｋ１と前記熱通過率（熱貫流率）Ｋ２の断熱効果の割合が、Ｋ１＜Ｋ２の範囲の断熱材で構成される事を特徴とする断熱箱。     In the heat insulation box that cools or keeps the object to be kept cold by storing the object to be kept warm and the cold storage warming agent inside,
    The heat insulation box comprises a box body sealed by a cover plate, side plates erected around the bottom plate, and a bottom plate,
    The lid plate and the bottom plate are made of a heat insulating material having substantially the same heat transmission rate (heat transmissivity) K 1 = kcal / m 2 · h · ° C., and the side plate has heat different from that of the lid plate and the bottom plate. It consists of a heat insulating material having a passage rate (heat transmissivity) K 2 = kcal / m 2 · h · ° C.,
    The proportion of the heat insulating effect of the heat transfer coefficient (heat transmission coefficient) K 1 and the heat transfer coefficient (heat transmission coefficient) K 2 is thermal insulation, characterized in that is composed of a heat insulating material in the range of K 1 <K 2 box.
  2. 　内部に被保冷温物と蓄冷温剤を収納して被保冷温物の保冷または保温を行う断熱箱において、
    　前記断熱箱は、蓋板と、周囲に立設される側板と、底板とによって密封された箱体からなり、
    　前記蓋板と前記底板と前記側板は、同一の熱伝導率λ＝ｋｃａｌ／ｍ・ｈ・℃を有する断熱材からなり、
    　前記蓋板と前記底板の肉厚ｔ１が、少なくとも前記側板の肉厚ｔ２に対し、２．２ｔ２＞ｔ１＞１．２ｔ２の範囲にある断熱材からなることを特徴とする断熱箱。     In the heat insulation box that cools or keeps the object to be kept cold by storing the object to be kept warm and the cold storage warming agent inside,
    The heat insulation box comprises a box body sealed by a cover plate, side plates erected around the bottom plate, and a bottom plate,
    The lid plate, the bottom plate, and the side plate are made of a heat insulating material having the same thermal conductivity λ = kcal / m · h · ° C.,
    Insulation thickness t 1 of the bottom plate and the cover plate, and the wall thickness t 2 of at least said side plates, characterized in that it consists of 2.2 T 2> t 1> heat insulating material in the range of 1.2 t 2 box.
  3. 　前記断熱材が、熱伝導率λの値をλ＝０．０５ｋｃａｌ／ｍ・ｈ・℃～０．００１５ｋｃａｌ／ｍ・ｈ・℃の範囲の断熱素材で構成されていることを特徴とする請求項１または請求項２記載の断熱箱。 The heat insulating material is formed of a heat insulating material having a value of thermal conductivity λ in a range of λ = 0.05 kcal / m · h · ° C. to 0.0015 kcal / m · h · ° C. The heat insulation box of Claim 1 or Claim 2.
  4. 　前記断熱箱は、蓄冷温剤を収納する蓄冷温剤収納部と、被保冷温物を収納する被保冷温物収納部と、前記蓄冷温物収納部と前記被冷温物収納部とを仕切る相互の空気流通を遮断する断熱材から成る断熱仕切板と、からなることを特徴とする請求項１乃至請求項３記載の断熱箱。 The heat insulation box is configured to partition a cold storage / warmth material storage unit for storing a cold storage warming agent, a cold storage material storage unit for storing a cold storage material, and a cold storage material storage unit and the cold storage material storage unit. The heat insulating box according to claim 1, further comprising: a heat insulating partition plate made of a heat insulating material that blocks air flow.
  5. 　前記断熱箱は、蓄冷温剤を収納する蓄冷温剤収納部と、被保冷温物を収納する被保冷温物収納部と、前記蓄冷温物収納部と前記被冷温物収納部とを仕切る断熱材から成る断熱仕切板からなり、前記断熱仕切板は、相互の空気を流通可能とするため、板を貫通する単一のまたは複数からなる孔を穿設したことを特徴とする請求項１乃至請求項３記載の断熱箱。 The heat insulation box partitions the cold storage material storage unit for storing the cold storage material, the cold storage material storage unit for storing the cold storage material, and the cold storage material storage unit and the cold storage material storage unit. 2. A heat insulating partition plate made of a material, wherein the heat insulating partition plate is formed with a single or a plurality of holes penetrating the plate so that mutual air can flow. The heat insulation box according to claim 3.
  6. 　前記蓄冷温剤は、容器と、該容器内に収納するゲル状の蓄冷温用内容物からなることを特徴とする請求項１乃至請求項５記載の断熱箱。 The heat insulation box according to any one of claims 1 to 5, wherein the cold storage warming agent comprises a container and a gel-like content for cold storage temperature stored in the container.
  7. 　前記蓄冷温剤収納部に収納する蓄冷温剤は、前記蓄冷温剤収納部内の空気の対流を抑制するため、前記蓄冷温剤収納部に収納可能な最大体積となるとともに蓄冷温剤の表面積が最小となるように、前記蓄冷温剤収納部内側寸法に対応する形状からなる単一の蓄冷温剤であることを特徴とする請求項４乃至請求項６記載の断熱箱。 The regenerator / heater stored in the regenerator / heater storage unit has a maximum volume that can be stored in the regenerator / heater storage unit and a surface area of the regenerator / heater in order to suppress air convection in the regenerator / heater storage unit. The heat insulation box according to any one of claims 4 to 6, wherein the heat insulation box is a single cold storage / warming agent having a shape corresponding to the inner dimension of the cold storage / warm storage part so as to be minimized.
  8. 　前記蓄冷温剤収納部に収納する蓄冷温剤は、前記蓄冷温剤収納部内の空気の対流を抑制するため、前記蓄冷温剤収納部内に隙間なく積層配置可能な形状からなることを特徴とする請求項４乃至請求項６記載の断熱箱。 The regenerator / heater stored in the regenerator / heater storage unit has a shape that can be stacked in the regenerator / heater storage unit without any gap in order to suppress convection of air in the regenerator / heater storage unit. The heat insulation box of Claim 4 thru | or 6.
  9. 　前記蓄冷温剤収納部は、内部の空気対流を抑制するため、前記蓄冷温剤を前記蓄冷温剤収納部内に積層配置するとともに、形成された隙間に軽量充填包装材からなる空気対流抑制材を配置したことを特徴とする請求項４乃至請求項６記載の断熱箱。
          In order to suppress internal air convection, the cold storage warming agent storage unit is arranged by laminating the cold storage warming agent in the cold storage warming agent storage unit, and an air convection suppression material made of a lightweight filling packaging material in the formed gap. The heat insulation box according to claim 4, wherein the heat insulation box is arranged.
PCT/JP2013/006490 2013-11-01 2013-11-01 Heat-insulated box WO2015063820A1 (en)

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JP2018177311A (en) * 2017-04-14 2018-11-15 国立研究開発法人宇宙航空研究開発機構 Cold insulation and heat insulation container
EP3798153A1 (en) * 2019-09-26 2021-03-31 va-Q-tec AG Heat insulating container

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JPS60113480U (en) * 1983-12-30 1985-07-31 鐘淵化学工業株式会社 Structure of cold box
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JP2005088924A (en) * 2003-09-16 2005-04-07 Tokiwa Printing Inc Cold insulation box
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JPS5867780U (en) * 1981-10-29 1983-05-09 日本ヒ−タ−株式会社 Cold box for home delivery of delicatessen items
JPS60113480U (en) * 1983-12-30 1985-07-31 鐘淵化学工業株式会社 Structure of cold box
JPS6193067A (en) * 1984-10-08 1986-05-12 株式会社　日欧交易 Cooling vessel
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JP2018177311A (en) * 2017-04-14 2018-11-15 国立研究開発法人宇宙航空研究開発機構 Cold insulation and heat insulation container
JP7170297B2 (en) 2017-04-14 2022-11-14 国立研究開発法人宇宙航空研究開発機構 cold insulation container
EP3798153A1 (en) * 2019-09-26 2021-03-31 va-Q-tec AG Heat insulating container
JP2021054536A (en) * 2019-09-26 2021-04-08 ファ−クー−テック アクチェンゲゼルシャフト Heat insulating container
US11661262B2 (en) 2019-09-26 2023-05-30 Va-Q-Tec Ag Thermal-insulation container

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