A cold chain packaging box based on phase change material

Abstract

The utility model discloses a cold chain packing box based on phase change material, including box body subassembly, phase change material refrigerating body, lid and connecting component, box body subassembly includes box body and at least one baffle, the inside hollow of box body, and top opening, the inner wall of baffle is connected to the box body, and is formed with the inner wall of box body between the combination and encloses the accommodation cavity, phase change material refrigerating body is built -in in the accommodation cavity, and with baffle abuts, the lid is set up to the top opening of box body, and one end of lid is hinged with box body, connecting component is connected to the lid, and can with box body detachable connection is used for opening or plugging the top opening of box body. The utility model can effectively solve the defect that the traditional cold chain packing box adopts the plastic foam material in prior art and has poor heat preservation performance, short time limit, and the problem that food, medicine is easily damaged or invalid due to overtemperature.

Description

Technical Field

[0001] This utility model relates to the field of cold chain packaging box technology, specifically to a cold chain packaging box based on phase change material. Background Technology

[0002] For perishable foods and temperature-sensitive pharmaceuticals, maintaining a precise and stable low-temperature environment during transportation and storage is crucial to ensuring their quality, safety, and effectiveness.

[0003] Currently, refrigerated trucks are used for transporting large quantities of food and medicine in my country, while temperature-controlled packaging is used for transporting small batches of food and medicine. Refrigerated trucks consume a lot of energy (fuel) during low-temperature delivery, resulting in high transportation costs and significant environmental pollution. To reduce transportation costs and energy (fuel) consumption, the most common temperature-controlled packaging method in the domestic market is foam boxes or plastic boxes with ice.

[0004] However, the traditional method of adding ice to foam boxes or plastic boxes uses a large amount of plastic foam material, which not only causes long-term and serious pollution to the ecological environment such as soil and water, exacerbating the problem of white pollution, but also has poor heat insulation performance and short lifespan, which can easily cause food and medicine to be damaged or become ineffective due to excessive temperature. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a cold chain packaging box based on phase change materials. This solves the technical problem that the traditional cold chain packaging boxes using plastic foam materials have poor heat preservation performance and short shelf life, which can easily lead to food and medicine being damaged or becoming ineffective due to overheating.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a cold chain packaging box based on phase change material, comprising:

[0008] A housing assembly includes a housing and at least one partition, wherein the interior of the housing is hollow and the top is open, and the partition is connected to the inner wall of the housing and forms a receiving cavity between the partition and the inner wall of the housing;

[0009] A phase change material cooler is built into the receiving cavity and abuts against the partition plate;

[0010] A lid is provided with an opening at the top of the box body, and one end of the lid is hinged to the box body; and

[0011] A connecting component, attached to the lid and detachably connected to the body, is used to open or close the top opening of the body.

[0012] In some embodiments, the top of the receiving cavity is formed with a communicating groove that communicates with the box body, and the cold chain packaging box based on phase change material further includes at least one elastic abutment strip, which is connected to the box cover and can be embedded in the communicating groove.

[0013] In some embodiments, the housing assembly further includes at least one snap-fit ​​element, which includes a snap-fit ​​rod and an elastic snap-fit ​​portion. One end of the snap-fit ​​rod is hinged to the inner wall of the communicating groove, and the other end is capable of abutting against the phase change material cooler. The elastic snap-fit ​​portion is connected to the other end of the snap-fit ​​rod and is capable of snapping against the inner wall of the communicating groove, thereby restricting the snap-fit ​​rod from rotating relative to the housing or releasing the restriction.

[0014] In some embodiments, the snap-fit ​​element includes a hinge seat, which is connected to the inner wall of the communicating groove and one end of the snap-fit ​​rod, so that the snap-fit ​​rod can rotate relative to the housing.

[0015] In some embodiments, the connecting groove has a slot relative to the locking rod, and the elastic locking part includes a locking block and a first elastic body, which is disposed relative to the slot. One end of the first elastic body is connected to the locking block and the other end is connected to the other end of the locking rod, for pushing the locking block into the slot and engaging with the slot.

[0016] In some embodiments, the other end of the latching rod is provided with a guide groove relative to the latching slot, one end of the latching block is disposed relative to the latching slot and the other end is slidably inserted into the guide groove, the first elastic body is placed in the guide groove, and one end of the first elastic body is connected to the latching block and the other end is connected to the inner wall of the guide groove.

[0017] In some embodiments, the card block has a gradually decreasing cross-sectional area along the direction away from the first elastomer and has a rounded end.

[0018] In some embodiments, the other end of the snap-fit ​​rod is provided with a sliding groove, which is connected to the guide groove. The snap-fit ​​component also includes a pull rod, one end of which is connected to the snap-fit ​​block and the other end is externally located at the other end of the snap-fit ​​rod.

[0019] In some embodiments, the number of partitions in the housing assembly is four, and the four partitions are respectively spaced apart from the four inner sidewalls of the housing and are all connected to the bottom inner wall of the housing. The phase change material cooler is arranged in a one-to-one correspondence with the receiving cavity.

[0020] In some embodiments, the cold chain packaging box based on phase change material further includes a temperature sensor connected to the inner wall of the box.

[0021] Compared with existing technologies, the beneficial effects of the cold chain packaging box based on phase change material provided by this utility model include: the partition is built into the inner wall of the box and connected to the inner wall of the box, so that the box forms a sandwich structure; the phase change material refrigeration body is placed in the receiving cavity and abuts against the partition, which is used to transfer low temperature to the items inside the box through the partition; the box lid is hinged to the box body and detachably connected to the box body through a connecting component, which is used to open or seal the top opening of the box body. Compared with existing technologies, the sealing structure composed of the box body and the box lid is used to keep the items warm. At the same time, by setting the phase change material refrigeration body in the receiving cavity, the phase change material absorbs or releases latent heat through the phase change process to maintain a constant temperature inside the box. This can effectively overcome the defects of poor heat preservation performance and short time caused by plastic foam materials, and can avoid food and medicine from being damaged or deteriorated due to overheating. It can solve the technical problem in the existing technology that the traditional cold chain packaging box using plastic foam materials has defects of poor heat preservation performance and short time, which easily leads to food and medicine being damaged or deteriorated due to overheating. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a cold chain packaging box based on phase change material provided in an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a cold chain packaging box based on phase change material provided in one embodiment of this utility model;

[0024] Figure 3 It is along Figure 2 Enlarged diagram of point A in the middle

[0025] Figure 4 This is a cross-sectional view from another perspective of a cold chain packaging box based on phase change material provided in one embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] Box body 110; Box body assembly 100; Partition 120; Snap-fit ​​component 130; Snap-fit ​​rod 131; Elastic snap-fit ​​part 132; Hinge seat 133; Snap block 1321; First elastic body 1322; Pull rod 1323; Phase change material cooler 200; Box cover 300; Connecting assembly 400; Elastic abutment strip 500; Temperature sensor 600. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] To address the shortcomings of traditional cold chain packaging boxes using plastic foam materials, such as poor insulation performance and short insulation time, which easily lead to damage or failure of food and medicine due to excessive temperature, this utility model provides a cold chain packaging box based on phase change materials. This box utilizes a sealed structure composed of the box body 110 and the lid 300 to insulate the items. Simultaneously, by placing a phase change material cooler 200 within the containment cavity, the phase change material absorbs or releases latent heat through a phase change process to maintain a constant temperature inside the box. This effectively overcomes the shortcomings of poor insulation performance and short insulation time caused by plastic foam materials, and can prevent food and medicine from being damaged or failing due to excessive temperature.

[0030] Please see Figure 1 , Figure 2 and Figure 4 , Figure 1 , Figure 2 This is a schematic diagram of the structure of a cold chain packaging box based on phase change material according to an embodiment of the present invention. The cold chain packaging box based on phase change material includes: a box body assembly 100, a phase change material cooler 200, a box cover 300, and a connecting assembly 400. The box body assembly 100 includes a box body 110 and at least one partition 120. The box body 110 is hollow inside and has an opening at the top. The partition 120 is connected to the inner wall of the box body 110 and forms a receiving cavity with the inner wall of the box body 110. The phase change material cooler 200 is built into the receiving cavity and abuts against the partition 120. The box cover 300 is disposed opposite to the top opening of the box body 110, and one end of the box cover 300 is hinged to the box body 110. The connecting assembly 400 is connected to the box cover 300 and can be detachably connected to the box body 110 for opening or sealing the top opening of the box body 110.

[0031] Compared to existing technologies, this device utilizes a sealed structure consisting of a box body 110 and a lid 300 to insulate items. Simultaneously, by installing a phase change material cooler 200 within the containment cavity, the phase change material absorbs or releases latent heat through a phase change process to maintain a constant temperature inside the box. This effectively overcomes the defects of poor insulation performance and short shelf life caused by plastic foam materials. It can prevent food and medicine from being damaged or becoming ineffective due to overheating. It can solve the technical problem in existing technologies where the use of plastic foam materials in traditional cold chain packaging boxes results in poor insulation performance and short shelf life, easily leading to damage or ineffectiveness of food and medicine due to overheating.

[0032] Furthermore, here, phase change material (PCM, an abbreviation for Phase Change Material) refers to a substance that changes its state of matter while maintaining a constant temperature and can provide latent heat. The process of changing physical properties is called a phase change process, during which the phase change material absorbs or releases a large amount of latent heat, which will not be elaborated further here.

[0033] Furthermore, the connecting component 400 here includes a male hook and loop fastener and a female hook and loop fastener. Either the male hook and loop fastener or the female hook and loop fastener is connected to one of the box body 110 or the box cover 300, and the other is connected to the other of the box body 110 or the box cover 300. The male hook and loop fastener and the female hook and loop fastener are bonded together. For reference, please refer to the Chinese invention patent with publication number CN119660162A, entitled "A Green and Environmentally Friendly Cold Chain Recycling Insulated Cardboard Box". Further details will not be provided here.

[0034] Furthermore, the box body 110 and the box cover 300 are made of steel and have a heat insulation effect. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0035] Furthermore, the partition 120 here has high thermal conductivity and is made of materials that are common and readily available on the market, such as expanded graphite or graphene nanosheets. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0036] In this embodiment, a communicating groove is formed on the top of the receiving cavity, which is connected to the box body 110. The cold chain packaging box based on phase change material also includes at least one elastic abutment strip 500, which is connected to the box cover 300 and can be embedded in the communicating groove.

[0037] The top connecting groove of the receiving cavity is sealed by the elastic abutment strip 500 to improve the sealing and heat preservation effect.

[0038] Furthermore, by abutting the elastic abutment strip 500 against the phase change material refrigerant 200, the sealing and heat preservation effects can be significantly improved. Here, the elastic abutment strip 500 is a common and readily available rubber sealing strip on the market, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0039] In one embodiment, please refer to Figures 2 to 4 The housing assembly 100 also includes at least one snap-fit ​​member 130. The snap-fit ​​member 130 includes a snap-fit ​​rod 131 and an elastic snap-fit ​​part 132. One end of the snap-fit ​​rod 131 is hinged to the inner wall of the connecting groove, and the other end can abut against the phase change material cooler 200. The elastic snap-fit ​​part 132 is connected to the other end of the snap-fit ​​rod 131 and can snap against the inner wall of the connecting groove, for limiting the rotation of the snap-fit ​​rod 131 relative to the housing 110 or releasing the restriction.

[0040] The snap-fit ​​rod 131 and the elastic snap-fit ​​part 132 form a detachable connection structure, which can restrict the phase change material cooler 200 from sliding out of the receiving cavity along the connecting groove, thereby facilitating the replacement of the phase change material cooler 200 and improving the reusability of the phase change material cooler 200.

[0041] In one embodiment, please refer to Figure 2 The snap-fit ​​component 130 includes a hinge seat 133, which is connected to the inner wall of the communicating groove and one end of the snap-fit ​​rod 131, so that the snap-fit ​​rod 131 can rotate relative to the housing 110.

[0042] The hinge seat 133 is used to realize the rotational connection between the snap rod 131 and the inner wall of the connecting groove.

[0043] Furthermore, the hinge seat 133 here is a common and readily available hinge on the market. The hinge is connected to the inner wall of the connecting groove and one end of the locking rod 131. This hinge is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0044] In one embodiment, please refer to Figure 2 , Figure 3 The connecting groove is provided with a slot relative to the locking rod 131. The elastic locking part 132 includes a locking block 1321 and a first elastic body 1322, which are arranged relative to the slot. One end of the first elastic body 1322 is connected to the locking block 1321 and the other end is connected to the other end of the locking rod 131, which is used to push the locking block 1321 into the slot and engage with the slot.

[0045] Under the elastic restoring force of the first elastic body 1322, the locking block 1321 can slide out relative to the locking rod 131 and engage with the locking groove opened on the inner wall of the connecting groove.

[0046] Furthermore, the first elastic body 1322 here is a spring, elastic block or spring sheet that is common and readily available in the market, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0047] In one embodiment, please refer to Figure 3 The other end of the locking rod 131 is provided with a guide groove relative to the locking slot. One end of the locking block 1321 is set relative to the locking slot, and the other end is slidably inserted into the guide groove. The first elastic body 1322 is built into the guide groove, and one end of the first elastic body 1322 is connected to the locking block 1321, and the other end is connected to the inner wall of the guide groove.

[0048] The guide groove is used to realize the sliding connection between the locking block 1321 and the locking rod 131, which improves the stability of the locking structure operation.

[0049] In one embodiment, please refer to Figure 3 The cross-sectional area of ​​the card block 1321 gradually decreases along the direction away from the first elastic body 1322, and it has a rounded end.

[0050] The card block 1321 has an arc end, which makes it easy to insert the card block 1321 into the card slot, thereby improving the stability of the card connection structure.

[0051] In one embodiment, please refer to Figure 3 The other end of the locking rod 131 is provided with a sliding groove, which is connected to the guide groove. The locking component 130 also includes a pull rod 1323, one end of which is connected to the locking block 1321 and the other end is placed outside the other end of the locking rod 131.

[0052] The lever 1323 is connected to the locking block 1321, which allows the user to easily release the locking structure between the locking block 1321 and the locking slot by pulling the lever 1323.

[0053] Furthermore, the pull rod 1323 is set perpendicular to the locking block 1321 and connected to the locking block 1321. The other end of the pull rod 1323 is externally placed in the slide groove, which makes it convenient for the user to release the locking structure between the locking block 1321 and the slot. This will not be described in detail here.

[0054] In one embodiment, the number of partitions 120 in the housing assembly 100 is four. The four partitions 120 are respectively spaced apart from the four inner side walls of the housing 110 and are all connected to the bottom inner wall of the housing 110. The phase change material cooler 200 is arranged in a one-to-one correspondence with the receiving cavity.

[0055] To improve the insulation effect of cold chain packaging boxes, phase change material refrigerants 200 are installed on all four sides of the box body 110.

[0056] Furthermore, the snap-fit ​​component 130 is provided in a one-to-one correspondence with the phase change material cooler 200, and a waterproof layer is provided between the phase change material cooler 200 and the partition plate, and a waterproof layer is provided between the phase change material cooler 200 and the inner wall of the box. The waterproof layer here is a common and readily available device on the market, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0057] In this embodiment, as Figure 4 As shown, the cold chain packaging box based on phase change material also includes a temperature sensor 600, which is connected to the inner wall of the box body 110.

[0058] By installing a temperature sensor 600 inside the enclosure 110, the temperature inside the enclosure can be monitored in real time, making it convenient for users to monitor or use.

[0059] Furthermore, the temperature sensor 600 should also be electrically connected to a temperature display. The temperature display is a common and readily available device on the market and is a conventional setup known to those skilled in the art, so it will not be described in detail here.

[0060] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below:

[0061] The partition 120 is built into and connected to the inner wall of the box 110, forming a sandwich structure. The phase change material cooler 200 is built into the receiving cavity and abuts against the partition 120, which is used to transfer low temperature to the items inside the box 110 through the partition 120. The lid 300 is hinged to the box 110 and detachably connected to the box 110 through the connecting component 400, which is used to open or seal the top opening of the box 110. Compared with the prior art, the sealed structure formed by the box 110 and the lid 300 is used to keep the items warm. At the same time, by setting the phase change material cooler 200 in the receiving cavity, the phase change material absorbs or releases latent heat through the phase change process to maintain a constant temperature inside the box. This can effectively overcome the defects of poor heat preservation performance and short time caused by plastic foam materials, and can prevent food and medicine from being damaged or becoming ineffective due to overheating.

[0062] In the specific working process of this utility model, the user first drives the locking rod 131 to rotate relative to the box 110, and after opening the connecting slot, places the phase change material cooler 200 into the receiving cavity. Then, the user drives the locking rod 131 to rotate in the opposite direction. When the guide groove is opposite to the slot, under the action of the elastic restoring force of the first elastic body 1322, the locking block 1321 is inserted into the slot and engages with the slot. Finally, the items to be packaged or stored are placed into the box 110, and the box cover 300 is connected to the box 110 using the connecting component 400.

[0063] Furthermore, when it is necessary to replace the phase change material cooler 200, the user first opens the cover 300. At this time, the elastic abutment strip 500 separates from the connecting groove. Then, the user pulls the lever 1323 by hand and slides it along the guide of the slide groove, so that the lever 1323 drives the locking block 1321 to separate from the locking groove. After the locking block 1321 is completely separated from the locking groove, the user continues to pull the lever 1323, which can drive the locking rod 131 to rotate relative to the box 110 and open the connecting groove. Finally, the new phase change material cooler 200 is replaced, the locking rod 131 is inserted into the connecting groove, and the cover 300 is connected to the box 110.

[0064] This application, through the aforementioned structure, can solve the technical problem in the prior art where the use of traditional cold chain packaging boxes with plastic foam materials results in poor heat insulation performance and short shelf life, easily leading to damage or failure of food and medicine due to excessive temperature.

[0065] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A cold chain packaging box based on phase change materials, characterized in that, include: A housing assembly includes a housing and at least one partition, wherein the interior of the housing is hollow and the top is open, and the partition is connected to the inner wall of the housing and forms a receiving cavity between the partition and the inner wall of the housing; A phase change material cooler is built into the receiving cavity and abuts against the partition plate; A lid is provided with an opening at the top of the box body, and one end of the lid is hinged to the box body; and A connecting component, attached to the lid and detachably connected to the body, is used to open or close the top opening of the body.

2. The cold chain packaging box based on phase change material according to claim 1, characterized in that, The top of the receiving cavity is formed with a communicating groove that communicates with the box body. The cold chain packaging box based on phase change material also includes at least one elastic abutment strip, which is connected to the box cover and can be embedded in the communicating groove.

3. The cold chain packaging box based on phase change material according to claim 2, characterized in that, The housing assembly further includes at least one snap-fit ​​component, which includes a snap-fit ​​rod and an elastic snap-fit ​​part. One end of the snap-fit ​​rod is hinged to the inner wall of the communicating groove, and the other end can abut against the phase change material cooler. The elastic snap-fit ​​part is connected to the other end of the snap-fit ​​rod and can snap against the inner wall of the communicating groove, thereby restricting the snap-fit ​​rod from rotating relative to the housing or releasing the restriction.

4. The cold chain packaging box based on phase change material according to claim 3, characterized in that, The snap-fit ​​component includes a hinge base, which is connected to the inner wall of the communicating groove and one end of the snap-fit ​​rod, so that the snap-fit ​​rod can rotate relative to the housing.

5. The cold chain packaging box based on phase change material according to claim 3, characterized in that, The connecting groove has a slot opposite to the locking rod. The elastic locking part includes a locking block and a first elastic body, which are positioned opposite the slot. One end of the first elastic body is connected to the locking block, and the other end is connected to the other end of the locking rod. It is used to push the locking block into the slot and engage with the slot.

6. The cold chain packaging box based on phase change material according to claim 5, characterized in that, The other end of the latching rod is provided with a guide groove relative to the latching slot. One end of the latching block is positioned relative to the latching slot, and the other end is slidably inserted into the guide groove. The first elastic body is placed in the guide groove, and one end of the first elastic body is connected to the latching block, and the other end is connected to the inner wall of the guide groove.

7. The cold chain packaging box based on phase change material according to claim 6, characterized in that, The cross-sectional area of ​​the card block gradually decreases along the direction away from the first elastic body, and it has a rounded end.

8. The cold chain packaging box based on phase change material according to claim 7, characterized in that, The other end of the snap-fit ​​rod is provided with a sliding groove, which is connected to the guide groove. The snap-fit ​​component also includes a pull rod, one end of which is connected to the snap-fit ​​block and the other end is externally placed at the other end of the snap-fit ​​rod.

9. The cold chain packaging box based on phase change material according to claim 1, characterized in that, The number of partitions in the housing assembly is four. The four partitions are respectively spaced apart from the four inner side walls of the housing and are all connected to the bottom inner wall of the housing. The phase change material cooler is arranged in a one-to-one correspondence with the receiving cavity.

10. The cold chain packaging box based on phase change material according to claim 1, characterized in that, The cold chain packaging box based on phase change material also includes a temperature sensor, which is connected to the inner wall of the box.

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