Composite heat-insulating temperature-controlling material and its manufacturing process

Abstract

The present invention provides a composite thermal insulation and temperature control material and a method for making the same, which relates to the field of cold chain transportation technology and solves the technical problem of poor performance of thermal insulation materials in the field of passive cold chain transportation. The composite thermal insulation and temperature control material includes a thermal insulation board, a refrigeration pipe, a phase change material layer and an adhesive protective layer; the refrigeration pipe runs through the phase change material layer and coils and extends inside the phase change material layer; the thermal insulation board is arranged outside the phase change material layer, and the two are arranged parallel to each other; the adhesive protective layer bonds and fixes the thermal insulation board and the phase change material layer to each other; the end of the refrigeration pipe is exposed on the surface of the protective layer and is detachably connected to the refrigeration equipment. The present invention is used to manufacture a passive cold chain transportation box.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain transportation, and in particular to a composite heat-insulating temperature-controlling material and a manufacturing process thereof. Background Art

[0002] In order to ensure the quality of some temperature-sensitive items (such as vaccines, injections, frozen foods, and hazardous chemicals), cold chain transportation must be used, but currently there are only active cold chain vehicles, which consume fuel to maintain the temperature of the refrigerated boxes, so air transportation is not suitable. To solve this problem, passive refrigerated boxes are needed, but the reality is that there are no matching raw materials on the market that can meet the needs of passive refrigerated boxes.

[0003] This application aims to solve the material problem of making passive cold chain vehicles. The material is easy to use, has strong endurance performance, and fully meets the needs of passive transportation. Summary of the invention

[0004] The purpose of the present invention is to provide a composite heat-insulating temperature-controlling material to solve the technical problem of poor performance of heat-insulating materials in the field of passive cold chain transportation in the prior art. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a composite heat-insulating temperature-control material, comprising a heat-insulating plate, a refrigeration pipe, a phase change material layer and an adhesive protective layer; the refrigeration pipe penetrates the phase change material layer and coils and extends inside the phase change material layer; the heat-insulating plate is arranged outside the phase change material layer, and the two are arranged parallel to each other; the adhesive protective layer adheres and fixes the heat-insulating plate and the phase change material layer to each other; the end of the refrigeration pipe is exposed on the surface of the protective layer and is detachably connected to the refrigeration equipment.

[0007] In a preferred or optional embodiment, a storage box is provided outside the phase change material layer, and the storage box includes an upper cover plate and a lower bottom plate, and semicircular limiting grooves are relatively opened at the bottom of the upper cover plate and the top of the lower bottom plate, and the diameter of the circular hole formed by the combination of the semicircular limiting grooves of the two is equal to the diameter of the refrigeration tube.

[0008] In a preferred or optional embodiment, a first limiting groove matching with the thermal insulation board is provided on one side of the adhesive protective layer, and a second limiting groove matching with the storage box is provided on the other side of the adhesive protective layer.

[0009] In a preferred or optional embodiment, the number of the thermal insulation plates and the number of the phase change material layers are at least two, and all the thermal insulation plates and the phase change material layers are neatly arranged on two parallel surfaces.

[0010] In a preferred or optional embodiment, the refrigeration pipe includes a refrigeration branch pipe and a refrigeration main pipe, the refrigeration branch pipe is S-shaped, the number of the refrigeration branch pipes is the same as the number of the phase change material layers, all the refrigeration branches are connected in parallel through the refrigeration main pipe, and the refrigeration main pipe is detachably connected to an external refrigeration device.

[0011] In a preferred or optional embodiment, the outer side of the composite heat-insulating temperature-controlling material is also covered with a protective shell, and the outer side of the protective shell is sprayed with a heat-insulating coating.

[0012] In a preferred or optional embodiment, a heat dissipation plate is provided on a side wall of the protective shell close to the phase change material layer.

[0013] A manufacturing process for producing the above-mentioned composite heat-insulating temperature-controlling material comprises the following steps: first, manufacturing a mold box of appropriate size as required; second, storing a box and filling the storage box with phase-change material; third, fixing an embedded block and an embedded groove below the top cover of the mold box, wherein the embedded block has the same shape and size as the storage box, and the diameter of the embedded groove is equal to the diameter of the refrigeration pipe; fourth, fixing an insulation board at the bottom of the mold box; fifth, filling the mold box with a foaming agent; and sixth, removing the mold box after the foaming layer is formed, and installing the refrigeration pipe and the storage box on top of the foaming layer.

[0014] A manufacturing process for producing the above-mentioned composite heat-insulating temperature-controlling material, the first step: preparing a protective shell opening box body and a protective shell upper cover of appropriate sizes according to requirements; the second step: spraying a heat-insulating coating on the outside of the protective shell; the third step: laying an insulation board at the bottom of the protective shell, laying a refrigeration pipe on top of the insulation board, and hot-melting the phase change material into the protective shell; the fourth step: after the phase change material cools to room temperature, installing and fixing the protective shell upper cover; the fifth step: a foaming tube is opened on the protective shell, and the foaming material is injected into the protective shell through the foaming tube to form an adhesive protective layer.

[0015] In a preferred or optional embodiment, the insulation board adopts a vacuum insulation board, and the manufacturing process of the vacuum insulation board is: the air-barrier material is made into a square bag, a core material is arranged inside, and the air in the air-barrier material is extracted by a vacuum pump. When the vacuum degree in the air-barrier material reaches 100 Pa, the air-barrier material is sealed; an exhaust pipe is arranged on the protective shell, and air is exhausted after the fourth step is completed. After the exhaust is completed, the exhaust pipe is closed, and the excess part is sawed off to proceed to the fifth step.

[0016] The composite heat-insulating temperature-control material provided by the present invention comprises a heat-insulating plate, a refrigeration tube, a phase-change material layer and an adhesive protective layer; the refrigeration tube runs through the phase-change material layer and coils and extends inside the phase-change material layer; the heat-insulating plate is arranged outside the phase-change material layer, and the two are arranged parallel to each other; the adhesive protective layer adheres and fixes the heat-insulating plate and the phase-change material layer to each other; the end of the refrigeration tube is exposed on the surface of the protective layer and is detachably connected to the refrigeration equipment. The use of the refrigeration tube makes it easy for the user to cool down and charge the phase-change material layer, and cooperates with the heat-insulating plate to effectively reduce heat loss, and can maintain a low temperature state for a long time in a passive environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the first composite heat-insulating temperature-controlling material involved in the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure of the bonding protective layer in the embodiment;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of the storage box in the embodiment;

[0021] Figure 4 yes Figure 1 A schematic diagram of the structure of the refrigeration tube in the embodiment;

[0022] Figure 5 It is a structural schematic diagram of the second composite heat-insulating temperature-controlling material involved in the present invention;

[0023] Figure 6 yes Figure 5 A cross-sectional view of the composite thermal insulation and temperature control material involved in the embodiment;

[0024] Figure 7 It is produced Figure 1 A schematic diagram of the structure of the mold box required for the embodiment;

[0025] Figure 8 It is produced Figure 2 Schematic diagram of the structure of the protective shell required for the embodiment

[0026] In the figure, 1, insulation board; 2, refrigeration pipe; 21, refrigeration branch pipe; 22, refrigeration main pipe; 3, phase change material layer; 4, adhesive protection layer; 41, first limiting groove; 42, second limiting groove; 5, protective shell; 51, heat sink; 52, foaming tube; 53, exhaust pipe; 6, mold box; 61, embedded block; 62, embedded groove. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] like Figure 1-4 As shown, the present invention provides a composite heat insulation and temperature control material, including a heat preservation board 1, a refrigeration tube 2, a phase change material layer 3 and an adhesive protective layer 4; the refrigeration tube 2 penetrates the phase change material layer 3, and coils and extends inside the phase change material layer 3; the heat preservation board 1 is arranged outside the phase change material layer 3, and the two are arranged parallel to each other; the adhesive protective layer 4 adheres and fixes the heat preservation board 1 and the phase change material layer 3 to each other; the end of the refrigeration tube 2 is exposed on the surface of the protective layer, and is detachably connected to the refrigeration equipment. The use of the refrigeration tube 2 makes it easy for the user to cool down and charge the phase change material layer 3, and cooperates with the heat preservation board 1 to effectively reduce heat loss, and can maintain a low temperature state for a long time in a passive environment.

[0029] As an optional implementation, a storage box is provided outside the phase change material layer 3, and the storage box includes an upper cover plate and a lower bottom plate. Semicircular limiting grooves are relatively opened at the bottom of the upper cover plate and the top of the lower bottom plate. The diameter of the circular hole formed by the combination of the semicircular limiting grooves of the two is equal to the diameter of the refrigeration pipe 2.

[0030] As an optional implementation, a first limiting groove 41 matching with the insulation board 1 is provided on one side of the adhesive protection layer 4, and a second limiting groove 42 matching with the storage box is provided on the other side of the adhesive protection layer 4.

[0031] As an optional implementation, the outer surface of the insulation board 1 and the storage box is flush with the outer surface of the adhesive protection layer 4 .

[0032] Example 1: Phase change material presents solid, gel, liquid (at least one form) during use

[0033] When in use, the composite thermal insulation and temperature control material is used to manufacture a box with a sealed space. The insulation board 1 is a vacuum insulation board located on the outside of the box to reduce thermal energy interaction and extend the insulation time during passive transportation. The phase change material is placed in a storage box, which is located on the inside of the box with the surface of the storage box exposed, to ensure smooth heat interaction between the phase change insulation layer and the internal environment of the box, to avoid the phase change insulation layer being unable to accurately maintain the original temperature after the internal environment temperature changes. The adhesive protective layer 4 (using components such as polyurethane prepolymer, foaming agent, and catalyst) bonds the insulation board 1 and the storage box together to provide physical protection for the two and avoid damage from bumps. In addition, the adhesive protective layer 4 also has an insulation effect.

[0034] Specifically, the refrigeration equipment using the existing technology is not within the protection scope of the present invention. According to the needs of use, the external connector of the refrigeration pipe 2 protrudes from the adhesive protective layer 4, or in order to prevent the protruding refrigeration pipe 2 from being bumped, a groove with a diameter larger than the diameter of the refrigeration pipe 2 can be opened on the adhesive protective layer 4, and the connector of the refrigeration pipe 2 is connected to the external refrigeration equipment in the groove.

[0035] As an optional implementation, the number of the insulation boards 1 and the phase change material layers 3 is at least two, and all the insulation boards 1 and the phase change material layers 3 are neatly arranged on two parallel surfaces.

[0036] As an optional implementation, the refrigeration pipe 2 includes a refrigeration branch pipe 21 and a refrigeration main pipe 22. The number of the refrigeration branch pipes 21 is the same as the number of the phase change material layers 3. All the refrigeration branch pipes 21 are connected to the refrigeration main pipe 22. The refrigeration main pipe 22 is detachably connected to the external refrigeration equipment. The combination of the refrigeration branch pipes 21 and the refrigeration main pipe 22 facilitates all-round and unified cooling of the composite thermal insulation and temperature control material as a whole, and can be applicable to various structural design cases.

[0037] As an optional implementation, the refrigeration branch pipe 21 is S-shaped, and all the refrigeration branch pipes 21 are connected in parallel. The parallel connection has strong adaptability, and after a local refrigeration pipe 2 fails, it can still be used.

[0038] like Figure 5 , 6 As shown, as an optional implementation, the outer side of the composite heat insulation and temperature control material is also covered with a protective shell 5, and the outer side of the protective shell 5 is sprayed with a heat insulation coating. The protective shell 5 can be made of lightweight materials such as alloy aluminum or glass fiber board.

[0039] As an optional implementation, a heat dissipation plate 51 is disposed on the side wall of the protective shell 5 close to the phase change material layer 3 .

[0040] Example 2: Phase change material presents solid and gel state during use

[0041] A protective shell 5 is used to cover the composite thermal insulation temperature control material as a whole to ensure that the physical properties of the composite thermal insulation temperature control material are stable and easy to use; in order to reduce the heat transfer rate caused by the protective shell 5, a thermal insulation coating is sprayed on the outside of the protective shell 5. In addition, in order not to affect the cooling effect of the phase change material layer 3, a heat sink 51 is arranged on the side of the protective shell 5 close to the phase change material layer 3.

[0042] Specifically, the refrigeration branches 21 may be connected to each other in series, and the refuge flow rates are uneven, resulting in different cooling rates of various parts of the phase change material layer 3, which is not conducive to temperature control.

[0043] As an optional implementation, the bonding protection layer 4 is made of polyurethane foam material.

[0044] As an optional implementation, the insulation board 1 is a vacuum insulation board 1 .

[0045] like Figure 7 As shown, a production process for producing the above-mentioned composite heat-insulating temperature-controlling material comprises the following steps: first, manufacturing a mold box of appropriate size as required; second, storing a box and filling the storage box with phase change material; third, fixing an embedded block and an embedded groove below the top cover of the mold box, wherein the embedded block has the same shape and size as the storage box, and the diameter of the embedded groove is equal to the diameter of the refrigeration pipe; fourth, fixing the insulation board at the bottom of the mold box; fifth, filling the mold box with a foaming agent; and sixth, removing the mold box after the foaming layer is formed, and installing the refrigeration pipe and the storage box on top of the foaming layer.

[0046] Specifically, to facilitate production and consumer use, the composite thermal insulation and temperature control material involved in the present invention can be mass-produced in modular form, and the composite thermal insulation and temperature control material modules can be used to assemble the required structure, and the refrigeration pipes 2 of all modules can be connected in series; a limit block or a limit groove is also provided at the bottom of the inner cavity of the mold box 6 to prevent the insulation board 1 from shifting during the production process; the installation groove formed by the storage box and the embedded block 61 is an interference fit, and in order to enhance the installation stability of the storage box, an anti-slip protrusion can also be provided on the side wall of the storage box.

[0047] like Figure 8 As shown, a manufacturing process for producing the above-mentioned composite heat-insulating temperature-controlling material comprises the following steps: the first step: preparing an opening box body of a protective shell 5 and an upper cover of the protective shell 5 of appropriate size according to requirements; the second step: spraying a heat-insulating coating on the outside of the protective shell 5; the third step: laying an insulation board 1 at the bottom of the protective shell 5, laying a refrigeration pipe 2 on top of the insulation board 1, and hot-melting the phase change material into the protective shell 5; the fourth step: after the phase change material cools to room temperature, installing and fixing the upper cover of the protective shell 5, which can be fixed by bolts; the fifth step: a foaming tube 52 is opened on the protective shell 5, and the foaming material is injected into the protective shell 5 through the foaming tube 52 to form an adhesive protective layer 4.

[0048] In a preferred or optional embodiment, the insulation board 1 adopts a vacuum insulation board, and the manufacturing process of the vacuum insulation board is: the gas-barrier material is made into a square bag (the gas-barrier material can be selected from metal aluminum foil film, nano-glass fiber polymer film, special adhesive and other main materials, and is made of a composite film material with high gas barrier, high water barrier, puncture resistance and easy heat sealing through heat sealing technology), and a core material is arranged inside (the core material can be selected from gas-phase silica), and the air in the gas-barrier material is extracted by a vacuum pump. When the vacuum degree in the gas-barrier material reaches 100pa, the gas-barrier material is sealed; the protective shell 5 is provided with an exhaust pipe 53, and exhaust is performed after the fourth step is completed. After the exhaust is completed, the exhaust pipe 53 is closed, and the excess part is sawed off to proceed to the fifth step.

[0049] Specifically, before the foam tube 52 is used, a sealing pin is provided to keep it in a closed state; after being shaped, the foam material seals the holes at the foam tube 52 , and the excess foam tube 52 can be directly cut off.

[0050] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A composite thermal insulation and temperature control material, characterized in that: It includes a heat preservation board, a refrigeration pipe, a phase change material layer and an adhesive protection layer; The refrigeration pipe penetrates the phase change material layer and coils and extends in the phase change material layer; The heat preservation plate is arranged outside the phase change material layer, and the two are arranged parallel to each other; The bonding protection layer bonds and fixes the thermal insulation board and the phase change material layer to each other; The end of the refrigeration pipe is exposed on the surface of the protective layer and is detachably connected to the refrigeration equipment; A storage box is arranged outside the phase change material layer, and the storage box comprises an upper cover plate and a lower bottom plate, and semicircular limiting grooves are provided at the bottom of the upper cover plate and the top of the lower bottom plate, and the diameter of the circular hole formed by the combination of the semicircular limiting grooves of the two is equal to the diameter of the refrigeration tube; A first limiting groove that matches the insulation board is provided on one side of the adhesive protective layer, and a second limiting groove that matches the storage box is provided on the other side of the adhesive protective layer; The thermal insulation board is a vacuum thermal insulation board or a vacuum heat insulation board; the bonding protective layer is a polyurethane foam material.

2. The composite heat-insulating temperature-controlling material according to claim 1, characterized in that: The number of the thermal insulation plates and the number of the phase change material layers are at least two, and all the thermal insulation plates and the phase change material layers are neatly arranged on two parallel surfaces.

3. The composite heat-insulating temperature-controlling material according to claim 2, characterized in that: The refrigeration pipe includes a refrigeration branch pipe and a refrigeration main pipe, the refrigeration branch pipe is S-shaped, the number of the refrigeration branch pipes is the same as the number of the phase change material layers, all the refrigeration branches are connected in parallel through the refrigeration main pipe, and the refrigeration main pipe is detachably connected to an external refrigeration device.

4. The composite heat-insulating temperature-controlling material according to claim 1, characterized in that: The outer side of the composite heat-insulating temperature-controlling material is also covered with a protective shell, and the outer side of the protective shell is sprayed with a heat-insulating coating.

5. The composite heat-insulating temperature-controlling material according to claim 4, characterized in that: A heat dissipation plate is arranged on a side wall of the protective shell close to the phase change material layer.

6. A process for producing the composite thermal insulation and temperature control material according to any one of claims 1 to 3, Step 1: Make a mold box of appropriate size according to needs; Step 2: Store the box and fill it with phase change material; Step 3: An embedded block and an embedded groove are fixedly arranged below the top cover of the mold box, wherein the embedded block has the same shape and size as the storage box, and the diameter of the embedded groove is equal to the diameter of the refrigeration pipe; Step 4: Fix the insulation board on the bottom of the mold box; Step 5: Fill the mold box with foaming agent; Step 6: After the foam layer is formed, remove the mold box and install the refrigeration pipe and storage box on the top of the foam layer.

7. A process for producing the composite thermal insulation and temperature control material according to claim 4 or 5, Step 1: Prepare a protective shell opening box body and a protective shell upper cover of appropriate size according to requirements; Step 2: Spray heat-insulating paint on the outside of the protective shell; Step 3: Lay an insulation board at the bottom of the protective shell, lay the refrigeration pipe on the insulation board, and hot-melt the phase change material into the protective shell; Step 4: After the phase change material cools down to room temperature, install and fix the upper cover of the protective shell; Step 5: A foaming tube is opened on the protective shell, and the foaming material is injected into the protective shell through the foaming tube to form an adhesive protective layer.

8. The manufacturing process of the composite heat-insulating temperature-controlling material according to claim 7, characterized in that: The insulation board adopts a vacuum insulation board, and the manufacturing process of the vacuum insulation board is as follows: the air-barrier material is made into a square bag, a core material is arranged inside, and the air in the air-barrier material is extracted by a vacuum pump. When the vacuum degree in the air-barrier material reaches 100 Pa, the air-barrier material is sealed; an exhaust pipe is arranged on the protective shell, and exhaust is carried out after the fourth step is completed. After the exhaust is completed, the exhaust pipe is closed, and the excess part is sawed off to proceed to the fifth step.

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