Refrigerating device for cold chain transportation container

Abstract

The utility model discloses a cold chain transportation container refrigeration device which comprises an assembling structure and a phase change refrigeration structure, the assembling structure comprises a ridge frame, an air chamber is formed in the center of the interior of the ridge frame, the front side and the rear side of the air chamber are both provided with through open devices, and the open end opening of the rear side is connected with a telescopic heat insulation pipeline in a sealed mode through a bolt; the telescopic heat insulation pipeline is a telescopic and twistable square pipe body; the phase change refrigeration structure comprises an isolation box, the isolation box is connected to the surface of the ridge frame through bolts, flow guide wing plates are connected to the rear side face, the left side face, the right side face and the lower portion of the front side and the lower portion of the rear side through bolts, and a phase change material is stored in the isolation box and blocks the interior of the isolation box through heat conduction pieces. One end of the heat-conducting fin is inserted into the air chamber from the isolation box and is in direct contact with cold air entering the air chamber; after the container is powered off, the refrigeration requirement of the container can be met, and meanwhile the load of the device in the truck transportation process can be reduced through airflow.

Description

Technical Field

[0001] This utility model relates to the field of cold chain equipment technology, specifically a refrigeration device for cold chain transport cargo boxes. Background Technology

[0002] Refrigeration units in cold chain transport containers are crucial equipment for ensuring goods remain in a specific low-temperature environment. Their working principle primarily involves cooling through a compression refrigeration cycle, including compression, condensation, expansion, and evaporation. The main types include mechanical refrigeration units, which offer high refrigeration efficiency, precise temperature control, and strong reliability, but are large, heavy, and have high installation and maintenance costs, as well as high energy consumption; liquid nitrogen refrigeration units offer fast cooling, no pollution, and simple operation, but have high storage and transportation costs and may have limited supply; and dry ice refrigeration units are low-cost and readily available, but have limited cooling effect, short duration, and require attention to the effects of carbon dioxide gas. Key technologies include temperature control technology, including precise temperature sensors and intelligent control systems; insulation technology, using high-quality insulation materials and ensuring good sealing; and fault diagnosis technology, which can monitor operating status in real time and quickly determine the cause of failure. Its applications are wide-ranging. In food transportation, it can be used to maintain the freshness and prevent spoilage of fresh and frozen foods. In pharmaceutical transportation, temperature-sensitive vaccines and biological products need to be transported in a low-temperature environment to ensure quality and safety. In flower transportation, fresh flowers and potted plants also need suitable temperatures to prolong their lifespan and prevent frost damage and wilting.

[0003] In modern cold chain logistics, ensuring that goods maintain a suitable temperature throughout the transportation process is crucial. To cope with potential unforeseen circumstances, such as failure of the vehicle's main refrigeration system or power outage, many vehicle owners install auxiliary refrigeration devices inside the refrigerated cargo box as a backup plan. The original intention of this design was to maintain a low-temperature environment for a period of time even if the main power fails, thereby buying valuable time for repair work and reducing the risk of cargo loss due to temperature runaway. However, while this approach improves safety and reliability, it also introduces some additional burdens. First, because these additional devices are directly installed inside the cargo box, they increase the overall weight, which not only affects fuel efficiency but may also adversely affect vehicle performance. Second, with the increased weight, tire wear will also accelerate, increasing operating costs in the long run. Furthermore, for companies pursuing lightweight and high-efficiency transportation, this is clearly not the best choice.

[0004] Therefore, this utility model provides a refrigeration device for cold chain transport cargo boxes to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a refrigeration device for cold chain transport cargo boxes, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a refrigeration device for a cold chain transport cargo box, including an assembly structure, wherein a phase change refrigeration structure is sealed to the front side of the assembly structure by bolts;

[0007] The assembly structure includes a ridge frame, an air chamber is provided at the center of the ridge frame, and the air chamber is provided with open access on both the front and rear sides. A telescopic heat insulation pipe is connected to the open port on the rear side by bolts. The telescopic heat insulation pipe is a square tube that can be extended and twisted, and a suction cup is connected to the port of the tube by bolts.

[0008] The phase change refrigeration structure includes an isolation box, which is bolted to the surface of the ridge frame. Guide vanes are bolted to the rear side, left and right sides, and the lower part of the front and rear sides. The isolation box stores phase change material, which is sealed inside the isolation box by a heat-conducting plate. One end of the heat-conducting plate passes through the isolation box and enters the interior of the air chamber, directly contacting the cold air entering the air chamber.

[0009] Preferably, the interior of the ridge frame has through-holes extending from the left and right inner walls of the air chamber outwards, and the through-holes on the left and right sides are not in a straight line interconnected state.

[0010] Preferably, the inside of the check vent is equipped with a check valve.

[0011] Preferably, a rotating shaft is fixedly provided at the upper end of the ridge frame, and the two ends of the rotating shaft are rotatably positioned at the center position on the front side of the fixing plate through bearing seats. At least two through mounting holes are provided on the upper surface of the fixing plate.

[0012] Preferably, the heat-conducting plate is composed of a plate with the same cross-section as the isolation box, a plate with the same height as the inside of the isolation box, and a plate that contacts the cold air, wherein the cold air contact end of the plate that contacts the cold air is set to be pointed.

[0013] Beneficial effects

[0014] This utility model provides a refrigeration device for cold chain transport cargo containers. Compared with the prior art, it has the following advantages:

[0015] (1) When the refrigeration system of the cold chain transport container is running normally, the cold air flows stably in the air chamber of the assembly structure. The cold air can contact the heat-conducting plate in a directional manner, so that the cold energy is efficiently transferred to the phase change material in the isolation box. After absorbing the cold energy, the phase change material undergoes a phase change, changing from one phase state to another phase state. In the normal refrigeration process, it can continuously absorb cold energy for energy storage. This energy storage method ensures that even if the refrigeration system fails to supply power unexpectedly during transportation, the phase change material can release the stored cold energy in time. The cold energy is transferred in the reverse direction through the heat-conducting plate, passing through the air chamber and the telescopic heat insulation pipe in sequence, and finally exchanging heat with the air in the container through the suction cup, thereby maintaining the low temperature environment in the container, providing the necessary time for maintenance, ensuring that the goods are in a suitable low temperature environment, and effectively avoiding the risk of goods deterioration due to power failure.

[0016] (2) In this cold chain transport cargo box refrigeration device, when the vehicle is moving, the vehicle's exhaust flow acts on the surface of the guide vane. Under the support of the airflow, the isolation box will rotate at a certain angle through the pivot of the ridge frame, and at the same time, the telescopic heat insulation pipe connected to the ridge frame will be stretched. This design cleverly utilizes the airflow dynamics during vehicle movement, which reduces the pressure on the cargo box to a certain extent, thereby indirectly improving the vehicle's carrying capacity and transportation efficiency, and reducing the adverse effects of excessive weight on vehicle performance and transportation costs. Attached Figure Description

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is an exploded structural diagram of this utility model;

[0019] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the phase change refrigeration structure of this utility model.

[0021] In the diagram: 1. Assembly structure; 11. Ridge frame; 111. Bearing seat; 112. Air chamber; 113. Anti-reverse air hole; 12. Fixing plate; 13. Telescopic heat insulation pipe; 131. Suction cup; 2. Phase change refrigeration structure; 21. Isolation box; 22. Guide vane; 23. Heat-conducting plate; 24. Phase change material. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A refrigeration device for a cold chain transport container includes: an assembly structure 1, wherein a phase change refrigeration structure 2 is connected to the front side of the assembly structure 1 by bolt sealing.

[0024] The assembly structure 1 includes a ridge frame 11, which is a 7-shaped metal plate. An air chamber 112 is located at the center of the ridge frame 11. Through-hole check vents 113 extend from the left and right inner walls of the air chamber 112 outwards from the ridge frame 11. The check vents 113 on the left and right sides are not linearly interconnected. Each check vent 113 is equipped with a pressure relief valve. The air chamber 112 has through-hole openings on both the front and rear sides, and a screw thread is used at the rear opening. The bolt seal is connected to a telescopic heat insulation pipe 13, which is a telescopic and twistable square tube. The pipe end is sealed with a suction cup 131 by bolts. The suction cup 131 is attached and positioned at the window reserved in the cargo box door, thereby connecting the interior of the cargo box with the air chamber 112. A rotating shaft is fixedly installed at the upper end of the ridge frame 11, and the two ends of the rotating shaft are rotated and positioned at the center of the front side of the fixing plate 12 through the bearing seat 111. At least two through mounting holes are opened on the upper surface of the fixing plate 12.

[0025] The phase change refrigeration structure 2 includes an isolation box 21, which is bolted to the surface of the ridge frame 11. The rear side, left and right sides, and the lower part of the front and rear sides are all bolted with guide vanes 22. The isolation box 21 stores phase change material 24, and the phase change material 24 is sealed inside the isolation box 21 by heat-conducting plates 23. The heat-conducting plates 23 are composed of a plate with the same cross-section as the isolation box 21, a plate with the same height as the inside of the isolation box 21, and a plate that contacts the cold air. The cold air contact end of the plate that contacts the cold air is set to be pointed, and the pointed end penetrates into the interior of the air chamber 112, so that it can directly contact the cold air entering the air chamber 112.

[0026] During operation, the refrigeration system generates cold air that flows in the air chamber 112. Due to the backflow prevention vent 113 and check valve of the ridge frame 11, the cold air flows in a directional manner and comes into contact with the heat-conducting plate 23. The cold energy is transferred to the phase change material 24 in the isolation box 21, causing it to undergo a phase change and store energy. When the power is off, the phase change material 24 releases cold air and passes through the heat-conducting plate 23, the air chamber 112, and the telescopic heat insulation pipe 13. The suction cup 131 exchanges with the air in the cargo box to maintain the low temperature. When the refrigerated truck is moving, the vehicle's exhaust jet acts on the guide vane 22, the isolation box 21 rotates, and the telescopic heat insulation pipe 13 stretches, using airflow to reduce weight.

[0027] In summary, when the refrigeration system is operating normally, the cold air flows stably in the air chamber 112 of the assembly structure 1. The cold air can directionally contact the heat-conducting plate 23, allowing the cold energy to be efficiently transferred to the phase change material 24 in the isolation box 21. After absorbing the cold energy, the phase change material 24 undergoes a phase change, transforming from one phase state to another. Furthermore, it can continuously absorb cold energy for energy storage during normal refrigeration. This energy storage method ensures that even if the refrigeration system experiences an unexpected power outage during transportation, the phase change material 24 can promptly release the stored cold energy, which is then transferred through the heat-conducting plate. The heat transfer occurs in reverse, passing through the air chamber 112 and the telescopic heat-insulating pipe 13 in sequence. Finally, the suction cup 131 exchanges heat with the air inside the cargo box, maintaining a low-temperature environment and providing necessary time for maintenance. This ensures the goods are kept in a suitable low-temperature environment, effectively avoiding the risk of spoilage due to power outages. When the vehicle is moving, the vehicle's exhaust jet acts on the surface of the guide vane 22. Lifted by the airflow, the isolation box 21 rotates at a certain angle via the pivot of the ridge frame 11, while the telescopic heat-insulating pipe 13 connected to the ridge frame 11 is stretched. This design cleverly utilizes the airflow dynamics during vehicle movement, reducing the pressure on the cargo box to some extent, thereby indirectly improving the vehicle's carrying capacity and transportation efficiency, and mitigating the adverse effects of excessive device weight on vehicle performance and transportation costs.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] Working Principle: During operation, the refrigeration system first starts running, generating cold air. This cold air flows within the air chamber 112 of the assembly structure 1. Because the ridge frame 11 has through-holes 113 extending from the left and right inner walls of the air chamber 112 outwards, and these through-holes 113 are not linearly interconnected, and because each through-hole 113 is equipped with a check valve, this ensures that the cold air flows only in a specific direction within the air chamber 112, preventing backflow and ensuring the cold air can flow freely. The cold air is continuously and stably in contact with the heat-conducting plate 23 in the phase change refrigeration structure 2. When the cold air comes into contact with the heat-conducting plate 23, the cold energy of the cold air is transferred to the phase change material 24 stored inside the isolation box 21 through the heat-conducting plate 23. After absorbing the cold energy, the phase change material 24 undergoes a phase change, changing from one phase state to another. During normal refrigeration, the phase change material 24 continuously absorbs cold energy for energy storage. When the refrigeration system experiences an unexpected power outage during transportation, the phase change material 24 begins to release the stored cold energy. The cold air is transferred in reverse through the heat-conducting plate 23, first entering the air chamber 112. Then, the cold air in the air chamber 112 passes through the telescopic heat-insulating pipe 13. Due to the telescopic and tortuous square pipe structure of the telescopic heat-insulating pipe 13, it can adapt to different spatial layouts and installation position requirements inside the cargo box. At the same time, its heat insulation performance can reduce the loss of cold air during the transfer process. Finally, the cold air exchanges heat with the air inside the cargo box through the suction cup 131. Because the suction cup 131 is attached and positioned at the window reserved in the cargo box door, it realizes the connection between the inside of the cargo box and the air chamber 112, thereby maintaining the low temperature environment inside the cargo box, providing the necessary time for maintenance, and ensuring that the goods are in a suitable low temperature environment. At the same time, during the operation of the refrigerated truck, the exhaust of the vehicle will act on the surface of the guide vane 22. Under the support of the airflow, the isolation box 21 will rotate at a certain angle through the pivot of the ridge frame 11. At the same time as the rotation, the telescopic heat-insulating pipe 13 connected to the ridge frame 11 will be stretched, thereby using the airflow to reduce the load of the device on the cargo box.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold chain shipping container refrigeration apparatus, characterized by, The utility model relates to a phase change refrigeration structure and a heat insulation structure of a heat insulation door, and relates to the technical field of heat insulation doors. The utility model discloses a phase change refrigeration structure and a heat insulation structure of a heat insulation door, and relates to the technical field of heat insulation doors. The phase change refrigeration structure (2) includes an isolation box (21), the isolation box (21) is connected on the surface of the ridge frame (11) through bolts, and the back side, left and right sides and the lower part of the front and back sides are all connected with the flow guide wing plate (22) through bolts, the isolation box (21) stores phase change material (24) inside, and the phase change material (24) is blocked inside the isolation box (21) through the heat conduction sheet (23), one end of the heat conduction sheet (23) is inserted into the inside of the air chamber (112) from the isolation box (21) and directly contacts the cold air entering the inside of the air chamber (112). The inside of the ridge frame (11) is provided with through anti-backflow holes (113) outside by the left and right inner walls of the air chamber (112), and the anti-backflow holes (113) on the left and right sides are not in the state of straight-line intercommunication.

2. The cold chain shipping container refrigeration apparatus of claim 1, wherein: The inside of the anti-backflow hole (113) is provided with an anti-backflow valve.

3. A cold chain shipping container refrigeration unit as claimed in claim 2, wherein: The upper end of the ridge frame (11) is fixedly provided with a rotating shaft, both ends of the rotating shaft are rotationally positioned on the center position of the front side of the fixed plate (12) through the bearing seat (111), and the upper surface of the fixed plate (12) is provided with at least two through mounting through holes.

4. The cold chain shipping container refrigeration unit of claim 1, wherein: The heat conduction sheet (23) is composed of a plate body with the same section as the isolation box (21), a plate body with the same height as the inside of the isolation box (21) and a plate body in contact with the cold air, wherein the cold air contact end of the plate body in contact with the cold air is provided in a sharp shape.

5. The cold chain shipping container refrigeration unit of claim 1, wherein: ​

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