Temperature control express packaging box with detachable composite heat insulation layer

Abstract

The utility model provides a temperature control express packaging box with a detachable composite heat insulation layer. The temperature control express packaging box comprises a protective shell, a plastic outer shell with an outer layer and a polyurethane foaming layer with an inner layer. The heat insulation inner box is detachably located in the protection shell, and the heat insulation inner box is provided with a phase change material layer on the outer layer and a vacuum heat insulation plate on the inner layer; the PCM cold storage plate is detachably located on the inner wall of the heat insulation inner box, and a refrigeration space formed by the PCM cold storage plate is used for storing temperature sensitive products. The temperature control express packaging box is composed of three parts, a protection shell is composed of an outer side plastic shell and an inner side polyurethane foaming layer and used for protecting the box against dust and impact damage, and meanwhile the protection shell serves as a first heat insulation layer; the heat insulation inner box is arranged in the protective shell, serves as a second heat insulation layer and is attached to the protective shell, and the heat insulation inner box is composed of a phase change material layer and a vacuum heat insulation plate. In addition, the purpose of keeping the temperature is achieved through phase change, and a proper phase change material layer can be selected according to product characteristics to be used for heat preservation and refrigeration.

Description

TECHNICAL FIELD

[0001] The utility model relates to a container cold fresh preservation technology, specifically relates to a technology of improving container heat preservation effect and heat preservation time. BACKGROUND

[0002] With the rapid development of pharmaceutical and life science industry, many biological products such as blood, vaccine need to be express transported, and the transportation time is often 24-72 hours. The express packaging box used in the cold chain logistics industry at present adopts the mode of ice bag plus foaming box for express transportation, and the heat preservation time is short, which cannot meet the safe transportation of temperature sensitive products.

[0003] The existing express packaging box mainly adopts single foaming layer as heat insulation shield, and the heat conductivity coefficient is fixed, so the heat insulation effect is poor, the temperature of the packaging box is in linear heating process, and the cold preservation time of the packaging box is short. In addition, the existing express box adopts the method of placing ice blocks in the box to provide cold source, and the phase change temperature of the cold source is 0 DEG C, which has the risk of freezing the temperature sensitive products, that is, the type of phase change material layer cannot be adjusted according to the refrigeration temperature of the product. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the above-mentioned technology, the utility model provides a kind of through improving heat insulation layer and cold source, to solve the problems of poor heat insulation effect, product easy to be frozen, short heat preservation time of prior art.

[0005] The utility model provides a kind of temperature control express packaging box with detachable composite heat insulation layer, it includes protective shell, heat insulation inner box and PCM cold storage plate;

[0006] The protective shell has outer plastic shell and inner polyurethane foaming layer;

[0007] The heat insulation inner box is detachably located inside the protective shell, and the heat insulation inner box has outer phase change material layer and inner vacuum insulation board;

[0008] The PCM cold storage plate is detachably located on the inner wall of the heat insulation inner box, and the cold storage space formed by the PCM cold storage plate is used to store temperature sensitive products.

[0009] Preferably, the phase change material filled in the PCM cold storage plate is a mixture of PEG200 and water.

[0010] Preferably, the phase change material filled in the PCM cold storage plate is 5 DEG C.

[0011] Preferably, the phase change material layer uses paraffin or fatty acid.

[0012] Preferably, the phase change temperature of the phase change material layer is 26 DEG C.

[0013] Preferably, the protective shell has a flip-up top cover, and a phase change material layer, a vacuum insulation panel, and a PCM cold storage panel are sequentially arranged on the inner side of the top cover.

[0014] Preferably, the upper outer side of the vacuum insulation panel of the insulating inner box has a snap-fit ​​opening, the lower outer side of the vacuum insulation panel has a curved bottom support piece, the phase change material layer includes an outer shell, the interior of the outer shell is filled with phase change material, the outer shell can be detachably inserted from the snap-fit ​​opening, and the bottom of the outer shell is snap-fitted with the curved bottom support piece.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The temperature-controlled express packaging box consists of three parts: a protective shell, an insulated inner box, and a PCM cold storage panel module. The protective shell is composed of an outer plastic shell and an inner polyurethane foam layer, which is used to protect the box from dust and impact damage and serves as the first layer of insulation. The insulated inner box is placed inside the protective shell and adheres to the protective shell as the second layer of insulation. It is composed of a phase change material (PCM) layer and a vacuum insulation (VIP) panel. This three-layer structure not only improves the thermal insulation effect, but also achieves the purpose of temperature maintenance through phase change. In addition, the presence of a detachable and replaceable phase change material layer allows the selection of an appropriate phase change material layer according to the characteristics of the product for thermal insulation and refrigeration.

[0017] In addition, in order to solve the problem of high cost of existing temperature-controlled packaging boxes, the utility model provides a detachable insulation layer design, so that the three insulation layers can be disassembled and reused separately, which is convenient for management and greatly reduces the cost of use.

[0018] Preferably, the overall thickness is 30 mm, of which the outer phase change material layer is 10 mm thick and the inner VIP plate is 20 mm thick. For example, the phase change material layer is filled with a phase change material with a phase change temperature of 26°C. The phase change material is solid at room temperature. When the temperature of the packaging box is higher than 26°C, it begins to melt and absorb heat. Therefore, it can be used as a heat storage layer to delay the time for heat to enter the packaging box, thereby extending the cold preservation time of the packaging box; the PCM cold storage plate module is composed of 6 PCM cold storage plates, which are embedded in the inner wall of the insulating box as the third layer of heat insulation. The cold storage plate is filled with a phase change material with a phase change temperature of 4°C. Therefore, the cold storage plate needs to be pretreated in advance, such as placing it in a refrigerator ≤0°C to solidify the material in the cold storage plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an open protective shell of a temperature-controlled express packaging box with a detachable composite insulation layer, in which the insulating inner box is placed inside the protective shell, and the top cover of the protective shell is in an open state;

[0020] Figure 2is the internal structure of the temperature control express packaging box with detachable composite heat insulation layer of the utility model, the top plate of the heat insulation inner box and the top plate of the cold storage plate are removed in the drawing;

[0021] Figure 3 is another angle internal structure of the temperature control express packaging box with detachable composite heat insulation layer of the utility model;

[0022] Figure 4 is the front view of the temperature control express packaging box with detachable composite heat insulation layer of the utility model;

[0023] Figure 5 is the Figure 4 A-A section view of the temperature control express packaging box with detachable composite heat insulation layer of the utility model;

[0024] Figure 6 is the vacuum heat insulation plate and PCM cold storage plate cooperation of the temperature control express packaging box with detachable composite heat insulation layer of the utility model;

[0025] Figure 7 is the vacuum heat insulation plate of the temperature control express packaging box with detachable composite heat insulation layer of the utility model.

[0026] Mark explanation:

[0027] 1-protective shell;2-heat insulation inner box;21-phase change material layer;11-top cover;22-vacuum heat insulation plate;221-engaging aperture;222-bent supporting sheet;3-PCM cold storage plate;4-PCM cold storage plate top plate;5-heat insulation inner box top plate. Specific implementation

[0028] Example 1:

[0029] As Figures 1 to 5 shown, the utility model provides a kind of temperature control express packaging box with detachable composite heat insulation layer, it includes protective shell 1, heat insulation inner box 2 and PCM cold storage plate 3;

[0030] Protective shell 1 has outer plastic shell and inner polyurethane foaming layer;Outer plastic shell plays the role of framework support, and inner polyurethane foaming layer forms the role of first heat insulation and heat preservation.

[0031] Heat insulation inner box 2 is detachably located inside protective shell 1, and heat insulation inner box 2 has outer phase change material layer 21 and inner vacuum heat insulation plate 22;Heat insulation inner box 2 is a cubic closed structure, and top heat insulation inner box top plate 5 can be opened or disassembled;

[0032] The PCM cold storage plate 3 is detachably arranged on the inner wall of the heat insulation inner box 2, and the cold storage space formed by the PCM cold storage plate 3 is used for storing temperature-sensitive products. Preferably, the PCM cold storage plate 3 also combines to form a cubic closed structure, and the top plate of the PCM cold storage plate on the upper side can be detached or closed.

[0033] In the utility model, three layers of heat insulation protection measures are adopted, that is, the outermost polyurethane foaming layer, the middle heat insulation inner box 2 and the inner PCM cold storage plate 3; three layers of heat insulation and heat preservation effects are formed, thereby effectively prolonging the heat preservation time of the packaging box, and each layer of heat insulation structure can be detachably arranged and does not affect each other, so as to facilitate management and reuse, and further reduce the use cost. After being detached, the protective shell 1 can be used as the shell of other packaging boxes of the same size immediately, the heat insulation inner box 2 is placed in a low-temperature environment, the phase change material layer 21 on the outer side can be quickly solidified, and then can be reused; and the PCM cold storage plate 3 can be placed in a freezing room below 0 DEG C for solidification, and then reused.

[0034] The connection and detachment between layers are connected by fasteners, or glued or magic pasted, so that the replacement or assembly is convenient and easy to use.

[0035] The assembly process of the temperature control express packaging box with detachable composite heat insulation layer is as follows:

[0036] The operation steps are as follows:

[0037] (1) the protective shell 1 is made, for example, with the size of 30*30*30cm, which is composed of a plastic shell and a polyurethane foaming layer; the protective shell 1 has a top cover 11, preferably four groups of top covers 11, each of which is hinged to the side plate of the protective shell 1.

[0038] (2) the heat insulation inner box 2 with detachable top plate is made, the outer size of the heat insulation inner box 2 corresponds to the protective shell 1, and the thickness is 30mm, of which the phase change material layer is 10mm and the vacuum insulation (v i p) plate is 20mm. Preferably, the heat insulation inner box 2 includes a bottom plate, four groups of side plates and a heat insulation inner box top plate 5 placed above, the four groups of side plates are detachably fixed on the bottom plate, and then the heat insulation inner box top plate 5 is placed on the four groups of side plates; in the assembly process, the four groups of side plates and the bottom plate are first placed in the protective shell 1, and the heat insulation inner box top plate 5 is placed or taken away according to the need; the four groups of side plates can be connected with the bottom plate by fasteners or adhesion, and the heat insulation inner box top plate 5 can be directly placed on the top of the four groups of side plates without physical connection, or preferably connected on the side plate by existing buckle or adhesion.

[0039] (3) the PCM cold storage plate 3 is made, the size corresponds to the insulation box, and the thickness is 20mm.

[0040] (4) Put the heat insulation inner box 2 into the protective shell 1, and then put the PCM cold storage plate 3 on the inner wall of the heat insulation inner box 2, preferably a plurality of PCM cold storage plates 3 also form a cuboid containing space.

[0041] (5) Put the temperature sensitive product into the box, then cover the PCM cold storage plate top plate 4 and the heat insulation inner box top plate 5, and finally seal the box,

[0042] (6) The packaging process is completed.

[0043] Example 2:

[0044] Based on example 1, this embodiment further includes the following scheme:

[0045] Preferably, the phase change material filled in the PCM cold storage plate 3 is a mixture of PEG200 and water.

[0046] Preferably, the phase change material filled in the PCM cold storage plate 3 is 5℃.

[0047] Preferably, the phase change material layer 31 adopts paraffin or fatty acid.

[0048] Preferably, the phase change temperature of the phase change material layer 31 is 26℃.

[0049] Preferably, the protective shell 1 has a reversible top cover 11, and when the packaging box is in a closed state, the inside of the top cover 11 is provided with a phase change material layer 21, a vacuum insulation plate 22 and a PCM cold storage plate 3 in sequence.

[0050] Compared with the prior art, the utility model has the beneficial effects that:

[0051] The temperature control express packaging box is composed of three parts, a protective shell, a heat insulation inner box and a PCM cold storage plate module. The protective shell is composed of an outer plastic shell and an inner polyurethane foaming layer, and is used for protecting the box from dust and impact damage, and simultaneously serves as a first heat insulation layer; the heat insulation inner box is arranged in the protective shell, serves as a second heat insulation layer and is attached to the protective shell, and is composed of a phase change material (PCM) layer and a vacuum insulation (VIP) plate. Through the three layers, on one hand, the heat preservation and insulation effect is improved, and on the other hand, the temperature is maintained through phase change, and through the existence of the detachable phase change material layer, the appropriate phase change material layer can be selected according to the product characteristics, and is used for heat preservation and refrigeration.

[0052] In addition, in view of the high use cost of the existing temperature control packaging box, the utility model provides a detachable heat insulation layer design, so that the three heat preservation layers can be detached and reused separately, which is convenient for management and greatly reduces the use cost.

[0053] Preferably, the overall thickness is 30mm, wherein the outer phase change material layer is 10mm thick, the inner VIP plate is 20mm thick, for example, the phase change material layer is filled with phase change material with a phase change temperature of 26℃, and the phase change material is solid at room temperature, and starts to melt and absorb heat when the temperature of the packaging box is higher than 26℃, so as to delay the time of heat entering the packaging box as a heat storage layer, thereby prolonging the cold preservation time of the packaging box; the PCM cold storage plate module is composed of 6 PCM cold storage plates, and is embedded in the inner wall of the insulation box as the third heat insulation layer, and the cold storage plate is filled with phase change material with a phase change temperature of 4℃, so that the cold storage plate needs to be pretreated in advance, such as being placed in a refrigerator ≤0℃ to solidify the material in the cold storage plate.

[0054] It should be noted that the phase change material mentioned in the utility model uses materials that belong to the prior art, and the composition of the material is not improved, and the phase change material of the mixture of PEG200 and water belongs to the material of the prior art. In addition, according to the characteristics of the products to be refrigerated, appropriate phase change materials can be selected, and since the box of the present application is convenient to disassemble and replace, different types of phase change materials and cold storage plates can be quickly replaced according to the characteristics of the products to be refrigerated, so that the use effect is better.

[0055] Example 3:

[0056] Based on example 1, the present embodiment further includes the following scheme:

[0057] As shown in Figure 6 and Figure 7 The outer side upper part of the vacuum heat insulation plate 22 of the heat insulation inner box 2 has a clamping hole 221, the outer side lower part of the vacuum heat insulation plate 22 has a curved bottom supporting piece 222, the phase change material layer 21 includes an outer shell, the inner part of the outer shell is filled with phase change material, the outer shell is detachably inserted from the clamping hole 221, and the bottom of the outer shell is clamped and matched with the curved bottom supporting piece 222.

[0058] Through such a structure, the vacuum heat insulation plate 22 and the phase change material layer 21 are quickly assembled and disassembled, and different types of phase change material layers 21 are also convenient to replace, so that the use is more convenient.

Claims

1. A temperature-controlled express packaging box with a detachable composite insulation layer, characterized by: include: A protective shell (1) having an outer plastic shell and an inner polyurethane foam layer; The heat-insulating inner box (2) is detachably located inside the protective shell (1), and the heat-insulating inner box (2) comprises an outer phase-change material layer (21) and an inner vacuum insulation panel (22); the phase-change material layer (21) is solid at room temperature, and begins to melt and absorb heat when the temperature of the packaging box is higher than 26°C, and is configured as a heat storage layer to delay the time for heat to enter the packaging box and extend the cold-keeping time of the packaging box; The PCM cold storage plate (3) is detachably located on the inner wall of the heat-insulating inner box (2); the refrigerated space formed by the PCM cold storage plate (3) is used to store temperature-sensitive products; six PCM cold storage plates (3) constitute a PCM cold storage plate module, which are configured as a third layer of heat insulation and are respectively embedded in the inner wall of the heat-insulating inner box (2); the PCM cold storage plates (3) are filled with a phase change material with a phase change temperature of 4°C, are configured to be pre-treated in advance, and are placed in a refrigerator at ≤0°C to solidify the phase change material in the PCM cold storage plates (3).

2. The temperature-controlled express packaging box with a detachable composite insulation layer according to claim 1, characterized in that: The heat-insulating inner box (2) has a heat-insulating inner box top plate (5).

3. The temperature-controlled express packaging box with a detachable composite insulation layer according to claim 1, characterized in that: The protective shell (1) has a reversible top cover (11); in an assembled state, the phase change material layer (21), the vacuum insulation panel (22), and the PCM cold storage panel (3) are sequentially arranged on the inner side of the top cover (11).

4. The temperature-controlled express packaging box with a detachable composite insulation layer according to claim 1, characterized in that: The phase change material filled in the PCM cold storage plate (3) is a mixture of PEG200 and water.

5. The temperature-controlled express packaging box with a detachable composite insulation layer according to claim 1, characterized in that: The phase change material layer (21) is made of paraffin or fatty acid.

6. The temperature-controlled express packaging box with a detachable composite insulation layer according to claim 1, characterized in that: The upper outer portion of the vacuum insulation panel (22) of the heat-insulating inner box (2) has a snap-fit ​​opening (221), the lower outer portion of the vacuum insulation panel (22) has a curved bottom support sheet (222), the phase change material layer (21) includes an outer shell, the interior of the outer shell is filled with phase change material, the outer shell is detachably inserted from the snap-fit ​​opening (221), and the bottom of the outer shell is snap-fitted with the curved bottom support sheet (222).

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