Multi-layer cold chain box

Abstract

The utility model relates to the technical field of cold chain boxes, and discloses a multilayer cold chain box which comprises a box body and a box cover, a rectangular groove-shaped heat preservation inner container is arranged in the box body, and a cold storage module is arranged on the inner side of the heat preservation inner container. According to the multi-layer cold chain box, an efficient and reliable cold chain transportation solution is formed through the design of the box body made of the high-strength polypropylene material, the sealing performance of the high-quality silica gel sealing ring and the configuration of the efficient cold storage module. The unique design of the cold chain box not only improves the thermal insulation performance and the use convenience of the cold chain box, but also ensures the temperature stability under different transportation conditions through the continuously replaceable cold storage module. According to the application of the cold chain box, the efficiency of cold chain logistics is greatly improved, the loss risk of articles in the transportation process is reduced, and a safer and more reliable refrigeration solution is provided for users.

Description

Technical Field

[0001] The utility model relates to the technical field of cold chain boxes, in particular to a multi-layer cold chain box. Background Art

[0002] Cold chain logistics is a crucial component of modern logistics systems, especially in industries such as food, pharmaceuticals, and chemicals that require strict temperature control. The reliability of cold chain transportation is directly related to product safety and quality. As core equipment in cold chain transportation, cold chain boxes bear the critical task of maintaining a low temperature environment during transportation. Traditional cold chain boxes typically rely on a single refrigerant or ice pack to maintain the low temperature environment within the box, and use insulating materials to reduce the intrusion of external heat. However, these traditional cold chain boxes have some significant shortcomings in practical applications.

[0003] First, the insulation performance of traditional cold chain containers is often limited by the amount and distribution of the refrigerant. Because the refrigerant is fixed in place, uneven temperature distribution can occur within the container. This can lead to some areas being too cold, potentially freezing items, while other areas are warmer, making it difficult to effectively maintain the required cold chain temperature. This temperature unevenness can cause serious quality issues in scenarios with long transport times or high temperature requirements.

[0004] Secondly, the refrigerant in traditional cold chain boxes is typically single-use or requires complex procedures for reuse. This not only increases the user burden but also limits the use of cold chain boxes for long-distance transportation or for long-term heat preservation needs. Especially in long-distance transportation, the refrigerant gradually loses its effectiveness over time, and the temperature inside the cold chain box cannot be continuously maintained within the ideal range, thus affecting the quality and safety of the goods. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a multi-layer cold chain box to solve the above problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: a multi-layer cold chain box, comprising a box body and a box cover, wherein a rectangular groove-shaped heat-insulating liner is provided inside the box body, and a cold storage module is provided inside the heat-insulating liner;

[0009] The thermal insulation liner specifically includes the following structure:

[0010] a heat reflecting layer distributed inside the box;

[0011] a heat-insulating layer distributed inside the heat-reflecting layer;

[0012] An inner fixing layer distributed on the inner side of the heat preservation layer;

[0013] The cold storage module specifically includes four water storage box combinations distributed on the front, back, left and right side walls of the inner fixing layer. On both sides of the outer side of each water storage box, two vertically parallel distributed T-shaped splicing teeth are provided, and the two T-shaped splicing teeth on both sides are correspondingly inserted into two docking slots provided on the same side wall of the inner fixing layer.

[0014] As a preferred technical solution of the present invention, the heat reflection layer is made of a multi-layer aluminized polyester film material.

[0015] As a preferred technical solution of the present invention, the heat preservation layer is made of a polyurethane foam plastic material.

[0016] As a preferred technical solution of the present invention, the inner fixing layer is made of a polyethylene material.

[0017] As a preferred technical solution of the present invention, a rectangular frame-shaped anti-slip pad is provided at the bottom of the box body.

[0018] As a preferred technical solution of the present invention, the box cover is hinged at the upper port of the box body, and a sealing ring is provided on the bottom surface of the box cover.

[0019] As a preferred technical solution of the present invention, a water injection port is provided at the center of the top end of the water storage box.

[0020] As a preferred technical solution of the present invention, multiple sets of the cold storage modules are provided for replacement. Compared with

[0021] the prior art, the present invention provides a multi-layer cold chain box, which has the following beneficial effects:

[0022] First of all, the design of the cold storage module realizes efficient temperature control through four independent water storage boxes. Each water storage box is evenly distributed around the inner liner, ensuring the temperature uniformity inside the cold chain box. This design not only improves the cooling efficiency, but also effectively prevents the damage of items caused by uneven temperature. Especially when transporting perishable items, it can better maintain their freshness and safety.

[0023] Secondly, the spiral sealed water injection port design of the water storage box ensures that there is no leakage during the water injection and freezing processes. Users can conveniently inject an appropriate amount of water, avoiding the common water loss problem in the use of traditional cold chain boxes. This sealed design not only improves the convenience of use, but also enhances the overall performance of the cold storage module, enabling it to maintain a low temperature environment for a long time after freezing.

[0024] In addition, the sustainable replacement feature of the cold storage module allows users to replace or add frozen water storage boxes at any time according to their needs during long-distance transportation or long-term storage. This flexibility greatly enhances the applicability of the cold chain box. Users can flexibly adjust the cold chain environment according to different transportation requirements to ensure the safety and freshness of items throughout the transportation process.

[0025] In summary, this multi-layer cold chain box forms an efficient and reliable cold chain transportation solution through the box design of high-strength polypropylene material, the sealing performance of high-quality silicone rubber seals, and the configuration of an efficient cold storage module. Its unique design not only improves the heat preservation performance and usability of the cold chain box but also ensures temperature stability under different transportation conditions through the sustainably replaceable cold storage module. The application of this cold chain box will greatly improve the efficiency of cold chain logistics, reduce the loss risk of items during transportation, and provide users with a safer and more reliable cold storage solution. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural view of the present utility model;

[0027] Figure 2 is a schematic semi-sectional structural view of the present utility model;

[0028] Figure 3 is a schematic view of the split structure of the heat preservation inner liner and the cold storage module of the present utility model

[0029] drawing; Figure 4 is a schematic structural view of the inner fixing layer of the present utility model; Figure 5 is

[0030] an exploded separation schematic view of the cold storage module of the present utility model.

[0031] Wherein: 1, box body; 2, box cover; 3, heat preservation inner liner; 4, cold storage module;

[0032] 11, anti-slip pad;

[0033] 21, seal ring;

[0034] 31, heat reflection layer; 32, heat preservation layer; 33, inner fixing layer;

[0035] 331, docking slot;

[0036] 41, water storage box; 42, water injection port; 43, T-shaped splicing tooth. Detailed Description of the Preferred Embodiments

[0037] The following will further elaborate on the present utility model in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of them. Without conflict, the embodiments and features in the present application can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, "a plurality of" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] Please refer to Figures 1-5 , a multi-layer cold chain box:

[0041] The structure of the box body and the lid:

[0042] The box body 1 is made of high-strength polypropylene material. This material not only has excellent impact resistance and corrosion resistance, but also can maintain its physical properties within a large temperature range, ensuring that the box body can be used normally in different environments. The outer shape of the box body is designed as a rectangle.

[0043] The lid 2 is fixed to the upper port of the box body 1 through a durable stainless steel hinge. A high-quality silicone rubber seal ring 21 is provided on the bottom surface of the lid. This seal ring has high elasticity and durability, and can form a tight seal when closed, preventing the cold air inside the box from leaking out and blocking the outside hot air from entering.

[0044] The design of the thermal insulation inner liner:

[0045] The thermal insulation inner liner 3 is the core part of this cold chain box. Its rectangular groove-like structure design can maximize the utilization rate of the internal space and ensure the safe storage of internal items at the same time. The outer layer of the inner liner is a heat-reflecting layer 31, which is made of multi-layer aluminized polyester film material. The multi-layer structure of this material can not only reflect the radiant heat from the outside, but also form a reflection effect inside the inner liner, reducing the loss of cold air and improving the overall thermal insulation performance.

[0046] The thermal insulation layer 32 is made of polyurethane foam. Polyurethane foam has excellent thermal insulation performance. Since its interior is filled with tiny closed-cell foams, it can effectively isolate heat conduction. The thickness of the thermal insulation layer is carefully designed to ensure good heat insulation effect without occupying too much internal space of the box body, enabling the inner container to hold more cold-chain items.

[0047] The inner fixing layer 33 is made of high-density polyethylene material. This material has good toughness and strength and can provide stable support for the built-in cold storage module. Through precision machining, the inner fixing layer forms multiple docking slots 331. These slots match the T-shaped splicing teeth 43 of the cold storage module 4, ensuring that the cold storage module can be stably installed in the inner container and preventing the cold storage module from shifting due to vibration or jolting during transportation.

[0048] Configuration of the cold storage module:

[0049] The cold storage module 4 is a key component to achieve a low-temperature environment. It is composed of four independent water storage boxes 41. These water storage boxes are attached to the surrounding side walls of the inner fixing layer 33 and are responsible for controlling the temperature of the front, back, left, and right of the inner container respectively. On the outer surface of each water storage box, there are two vertically parallel distributed T-shaped splicing teeth 43. This design ensures a tight combination between the water storage box and the inner fixing layer, preventing the water storage box from falling off when the box body tilts or moves.

[0050] At the center of the top of the water storage box 41, there is a water injection port 42, which is convenient for users to inject water. The water injection port is designed as a spiral sealing port, which can ensure no leakage during the water injection and sealing process. Users can inject an appropriate amount of water through the water injection port according to needs, and then put the water storage box into the refrigerator for freezing. After freezing, solid ice is formed inside the water storage box, which can provide a long-term continuous low-temperature environment after being placed in the cold-chain box. The material of the water storage box is selected as low-temperature resistant plastic to ensure that it will not become brittle or crack in the frozen state, and each water storage box has a certain wall thickness to ensure durability during multiple uses.

[0051] Anti-slip design:

[0052] To improve the stability of the cold-chain box during transportation, a rectangular frame-shaped anti-slip pad 11 is specially designed at the bottom of the box body 1. The anti-slip pad is made of high-wear-resistant rubber material. The rubber material not only provides good anti-slip effect but also can absorb the vibration and impact generated during transportation, further protecting the box body and the internal items. The rectangular frame-shaped design of the anti-slip pad enables the box body to maintain a stable position on the smooth carriage or warehouse floor, preventing the box body from sliding due to vehicle jolting or uneven ground.

[0053] Usage method

[0054] Before use, the user needs to inject an appropriate amount of water into the water storage box 41 through the water injection port 42. The water injection volume should be controlled at about 80% of the volume of the water storage box to reserve space for the expansion of the water body during the freezing process and prevent the water storage box from cracking. Subsequently, place the water injection-filled water storage box flat in the freezer of the refrigerator for freezing, usually for more than 12 hours to ensure that the water is completely frozen into solid ice cubes.

[0055] After the freezing is completed, take out the water storage box and insert it one by one onto the inner fixing layer 33 inside the heat preservation inner liner 3, ensuring that the T-shaped splicing teeth 43 are perfectly fitted with the docking slots 331 of the inner fixing layer to ensure the stability and firmness of the cold storage module.

[0056] Neatly place the items to be refrigerated into the box body 1, avoiding direct contact between the items and the water storage box to prevent the items from being frostbitten due to direct contact. Then, close the box cover 2 and check whether the sealing ring 21 is in close contact with the upper opening of the box body to ensure that the box body is in a good sealed state.

[0057] During transportation, regularly check the state of the box body 1, especially during long-distance transportation, to ensure that the box body is always in an upright state to maintain the best working state of the cold storage module. If the internal temperature of the box body rises due to long-term transportation, it is possible to consider replacing or adding additional frozen water storage boxes during the journey to ensure the continuity of the cold chain environment.

[0058] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0059] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0060] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-layer cold chain box, comprising a box body (1) and a box cover (2), characterized in that: Inside the box body (1), there is a rectangular groove-shaped heat preservation inner container (3), and a cold storage module (4) is arranged on the inner side of the heat preservation inner container (3); The heat preservation inner container (3) specifically includes the following structures: A heat reflection layer (31) distributed on the inner side of the box body (1); A heat preservation layer (32) distributed on the inner side of the heat reflection layer (31); An inner fixing layer (33) distributed on the inner side of the heat preservation layer (32); The cold storage module (4) is specifically composed of four water storage boxes (41) distributed on the front, back, left, and right side walls of the inner fixing layer (33). On both sides of the outer side surface of each water storage box (41), there are two vertically parallel distributed T-shaped splicing teeth (43), and the two T-shaped splicing teeth (43) on both sides are correspondingly inserted into two docking slots (331) arranged on the same side wall of the inner fixing layer (33).

2. The multi-layer cold chain box according to claim 1, characterized in that: The heat reflection layer (31) is made of a multi-layer aluminized polyester film material.

3. The multi-layer cold chain box according to claim 1, wherein: The heat preservation layer (32) is made of a polyurethane foam material.

4. The multi-layer cold chain box according to claim 1, wherein: The inner fixing layer (33) is made of a polyethylene material.

5. A multi-layer cold chain box according to claim 1, characterized in that: A rectangular frame-shaped anti-slip pad (11) is arranged at the bottom of the box body (1).

6. The multi-layer cold chain box according to claim 1, characterized in that: The box cover (2) is hinged at the upper port of the box body (1), and a sealing ring (21) is arranged on the bottom surface of the box cover (2).

7. A multi-layer cold chain box according to claim 1, characterized in that: A water injection port (42) is arranged at the center of the top end of the water storage box (41).

8. A multi-layer cold chain box according to claim 1, characterized in that: Multiple sets of the cold storage module (4) are provided for replacement.

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