Refrigerating system for cold chain transport vehicle

Abstract

The invention discloses a refrigeration system for a cold chain transport vehicle, and relates to the technical field of cold chain refrigeration, the refrigeration system comprises an intelligent control module, the output end of the intelligent control module communicates with the input ends of a liquid nitrogen rapid refrigeration module, a phase change cold storage module and a mechanical constant temperature refrigeration module; the output end of the liquid nitrogen rapid refrigeration module and the output end of the mechanical constant-temperature refrigeration module communicate with the input end of the phase change cold storage module. Through the intelligent control module, the liquid nitrogen rapid refrigeration module, the phase change cold storage module and the mechanical constant-temperature refrigeration module, the effects of efficient temperature control response, cooling capacity gradient utilization and optimal system energy consumption are achieved; by means of the waste heat recovery module and the mechanical constant-temperature refrigeration module, the effects of efficient energy recovery, stable and lasting refrigeration and energy conservation and efficiency improvement of the system are achieved; and through the liquid nitrogen rapid refrigeration module, the phase change cold storage module and the mechanical constant-temperature refrigeration module, the purposes of rapid cooling response, reasonable coldness allocation and high efficiency and energy conservation of the system are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cold chain refrigeration technology, in particular to a refrigeration system for a cold chain transport vehicle. BACKGROUND

[0002] The cold chain transport vehicle is the key equipment to ensure the quality of fresh food, medicine and other perishable goods from production to consumption. Its core requirements are precise temperature control, energy optimization and hygiene safety. Traditional cold chain transport vehicles rely on single mechanical refrigeration mode, which has slow temperature control response, high energy consumption, serious waste of cold energy, and insufficient temperature uniformity in the cargo box, which easily leads to local deterioration of goods. At the same time, microbial contamination and waste heat from the cold machine are not effectively utilized, which restricts the efficiency and sustainability of cold chain transportation. With the rapid development of fresh food e-commerce and medicine cold chain, there is an increasing demand for cold chain equipment with small temperature fluctuation, high intelligence and low carbon energy saving during transportation.

[0003] Existing cold chain refrigeration technologies mainly include mechanical refrigeration, liquid nitrogen refrigeration and cold storage refrigeration. Mechanical refrigeration relies on continuous operation of the compressor, which has high energy consumption, large temperature fluctuation and frequent start-stop, which easily damages the equipment. Liquid nitrogen refrigeration has fast cooling speed but high cost, and the waste of cold energy is easy to cause waste. The cold storage refrigeration has limited cold storage capacity and is difficult to meet the long-time or high-load temperature control requirements. In addition, the traditional technology lacks a multi-mode collaborative control mechanism and cannot dynamically adjust the refrigeration strategy according to the real-time temperature, so it is necessary to design a refrigeration system for a cold chain transport vehicle to solve the above problems. SUMMARY

[0004] To achieve the above purpose, the present application realizes the following technical scheme: a refrigeration system for a cold chain transport vehicle, comprising an intelligent control module, the output end of the intelligent control module being in communication with the input end of a liquid nitrogen rapid refrigeration module, a phase change cold storage module and a mechanical constant temperature refrigeration module, the output end of the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module being in communication with the input end of the phase change cold storage module, and the output end of the liquid nitrogen rapid refrigeration module also being in communication with the input end of the mechanical constant temperature refrigeration module; the output end of the intelligent control module is also in communication with the input end of a hygiene safety module; the output end of the mechanical constant temperature refrigeration module is in communication with the input end of a waste heat recovery module. The intelligent control module is used to dynamically switch the refrigeration modes of the liquid nitrogen rapid refrigeration module, the mechanical constant temperature refrigeration module and the phase change cold storage module. The liquid nitrogen rapid refrigeration module is used to rapidly cool through liquid nitrogen vaporization and store excess cold energy in the phase change cold storage module, and can also assist the mechanical constant temperature refrigeration module to quickly reach the set temperature. The phase change cold storage module adopts a phase change cold storage plate made of sodium polyacrylate composite material, which is arranged on the inner wall of the container and is used for absorbing the excess cold generated by the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module, and releasing cold to maintain the temperature stable when the temperature in the container fluctuates. The mechanical constant temperature refrigeration module is used for refrigeration by a variable frequency compressor to maintain a constant temperature environment in the container and provide waste heat source for the waste heat recovery module. The waste heat recovery module is integrated in the mechanical constant temperature refrigeration module and is used for converting the waste heat generated by the mechanical constant temperature refrigeration module into electrical energy.

[0005] Preferably, the liquid nitrogen rapid refrigeration module comprises a liquid nitrogen storage tank unit and a multi-stage ejector valve unit. The multi-stage ejector valve unit is used for accurately adjusting the liquid nitrogen injection amount according to the instructions of the intelligent control module. The liquid nitrogen storage tank unit is used for storing liquid nitrogen.

[0006] Preferably, the mechanical constant temperature refrigeration unit comprises a variable frequency compression unit, a pressure balance unit and a jet refrigeration cycle unit. The variable frequency compression unit is used for adjusting the rotation speed of the compressor according to the instructions of the intelligent control module to dynamically adjust the refrigeration capacity. The pressure balance unit is used for balancing the pressure in the refrigeration cycle system to prevent the refrigeration efficiency and equipment life from being affected by pressure fluctuations. The jet refrigeration cycle unit is used for driving with the waste heat recovered by the tail gas waste heat recovery unit to complement the refrigeration of the variable frequency compressor and improve the overall refrigeration efficiency.

[0007] Preferably, the intelligent control module dynamically adjusts the refrigeration temperature in combination with the temperature sensor in the container. When ΔT≥5℃, the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration unit operate in dual mode, and the phase change cold storage plate synchronously stores cold. When 3℃≤ΔT<5℃, the mechanical constant temperature refrigeration module is the main one, and the liquid nitrogen rapid refrigeration module intermittently works to supplement the cold of the phase change cold storage plate. When ΔT<3℃, only the mechanical constant temperature refrigeration unit maintains a constant temperature, and the phase change cold storage plate releases cold as needed.

[0008] Preferably, the surface of the phase change cold storage plate of the phase change cold storage module is coated with a nano-level antibacterial coating, which comprises silver ions and titanium dioxide composite components to inhibit the growth of microorganisms on the inner wall of the container.

[0009] Preferably, the waste heat recovery module adopts a combined power generation mode of thermoelectric generator and organic Rankine cycle, the thermoelectric generator is used for directly converting the medium-low temperature waste heat generated by the mechanical constant temperature refrigeration module into electric energy, and the organic Rankine cycle system is used for generating power for the high temperature waste heat.

[0010] Preferably, the health safety module comprises an ultraviolet sterilization unit and an ozone purification unit. The ultraviolet sterilization unit sterilizes the interior of the container in all directions through arrangement on the top and side wall of the container. The ozone purification unit is started in the state that the vehicle is parked and no goods are loaded, and decomposes odor molecules and kills stubborn microorganisms by using ozone.

[0011] In summary, the application provides a refrigeration system for a cold chain transport vehicle, which has the following beneficial effects: 1. Through the intelligent control module, the liquid nitrogen rapid refrigeration module, the phase change cold storage module and the mechanical constant temperature refrigeration module, efficient temperature control response, cold energy gradient utilization and optimal system energy consumption are achieved; at the same time, the intelligent control module switches the refrigeration mode and the phased temperature control strategy dynamically, so that the temperature fluctuation of the container is precisely controlled, and the response speed is improved; the liquid nitrogen rapid refrigeration module can rapidly cool down in a high temperature emergency scenario, and store the excess cold energy in the phase change cold storage module for recycling; the phase change cold storage module uniformly releases cold energy through the sodium polyacrylate cold storage plate, thereby reducing the start-stop frequency of the refrigeration module; the variable frequency compressor of the mechanical constant temperature refrigeration module is combined with the waste heat recovery technology, thereby reducing the energy consumption of the traditional system, increasing the waste heat utilization rate, and constructing a precise, energy-saving and recycling cold chain refrigeration system.

[0012] 2. Through the waste heat recovery module and the mechanical constant temperature refrigeration module, energy efficient recovery, stable and durable refrigeration, and system energy saving and efficiency increase are achieved; at the same time, the waste heat recovery module utilizes the thermoelectric generator and the organic Rankine cycle to capture and convert the waste heat generated by the mechanical constant temperature refrigeration module during operation, thereby increasing the waste heat recovery rate; the converted electric energy is preferentially supplied to the variable frequency compressor of the mechanical constant temperature refrigeration module, so that the refrigeration capacity can be accurately adjusted according to the temperature in the container, the refrigeration precision is increased, unnecessary energy consumption is reduced, and the mechanical constant temperature refrigeration module is continuously and stably maintained at a temperature in the container under the assistance of the waste heat recovery module, thereby reducing the overall energy consumption and the probability of equipment failure caused by overheating compared with the traditional refrigeration system.

[0013] 3. By the liquid nitrogen rapid refrigeration module, the phase change cold storage module and the mechanical constant temperature refrigeration module, the goals of rapid cooling response, reasonable cold distribution and system high efficiency and energy saving are realized; meanwhile, when encountering high temperature sudden conditions, the liquid nitrogen rapid refrigeration module can make the temperature of the container drop rapidly by virtue of multi-stage precise spraying technology, and the excess cold can be rapidly transmitted to the phase change cold storage module; the phase change cold storage module adopts sodium polyacrylate cold storage plate, can store cold efficiently, slowly and uniformly release cold when the temperature fluctuates, reduce the start-stop frequency of the refrigeration module, and maintain the temperature uniformity in the container; the variable frequency compressor of the mechanical constant temperature refrigeration module cooperates with the liquid nitrogen rapid refrigeration module and the phase change cold storage module, refrigerates on demand in the stable stage, and in combination with advanced heat exchange technology, the energy consumption is reduced compared with traditional refrigeration combination. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a system architecture schematic diagram of the refrigeration system for the cold chain transport vehicle of the application; Figure 2 It is a duck egg rapid refrigeration module architecture schematic diagram of the refrigeration system for the cold chain transport vehicle of the application; Figure 3 It is a mechanical constant temperature refrigeration module architecture schematic diagram of the refrigeration system for the cold chain transport vehicle of the application; Figure 4 It is a sanitary safety module architecture schematic diagram of the refrigeration system for the cold chain transport vehicle of the application. DETAILED DESCRIPTION

[0015] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 4 , the application will be further described in detail.

[0016] Embodiment: The application provides a technical scheme: a refrigeration system for a cold chain transport vehicle, comprising an intelligent control module, an output end of the intelligent control module being in communication with input ends of a liquid nitrogen rapid refrigeration module, a phase change cold storage module and a mechanical constant temperature refrigeration module, output ends of the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module being in communication with an input end of the phase change cold storage module, and the output end of the liquid nitrogen rapid refrigeration module being in communication with an input end of the mechanical constant temperature refrigeration module; the output end of the intelligent control module is also in communication with an input end of a sanitary safety module; and the output end of the mechanical constant temperature refrigeration module is in communication with an input end of a waste heat recovery module. The intelligent control module is used for dynamically switching the refrigeration modes of the liquid nitrogen rapid refrigeration module, the mechanical constant temperature refrigeration module and the phase change cold storage module, through intelligent dynamic switching, each refrigeration module can be flexibly distributed according to the actual working condition, long time high load operation of a single module is avoided, the service life of the equipment is prolonged, the optimal balance between refrigeration efficiency and energy consumption is realized, and the energy cost of the cold chain transport is reduced; The liquid nitrogen rapid refrigeration module is used for rapid cooling by liquid nitrogen vaporization and transporting excess cold to the phase change cold storage module for storage, while assisting the mechanical constant temperature refrigeration module to quickly reach the set temperature. By using the rapid cooling characteristics of liquid nitrogen vaporization, the system can quickly respond when the temperature of the cargo box suddenly rises and quickly restore the cold chain environment. The excess cold is stored in the phase change cold storage module to avoid waste of cold and realize energy recycling, thereby improving the energy efficiency of the system. The phase change cold storage module uses a phase change cold storage plate made of sodium polyacrylate composite material, which is arranged on the inner wall of the cargo box. It is used to absorb and store excess cold generated by the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module, and release cold to maintain temperature stability when the temperature in the cargo box fluctuates. The phase change cold storage plate made of sodium polyacrylate composite material has high cold storage density and stable phase change characteristics, which can buffer temperature fluctuations and reduce the frequent start-stop of the refrigeration module, thereby reducing energy consumption. At the same time, it is uniformly arranged on the inner wall of the cargo box to ensure uniform temperature distribution in the cargo box and improve the stability of the goods storage environment. The mechanical constant temperature refrigeration module is used for refrigeration by a variable frequency compressor to maintain a constant temperature environment in the cargo box and provide waste heat for the waste heat recovery module. The variable frequency compressor can adjust the speed according to the actual refrigeration demand to realize precise control of the refrigeration capacity and avoid excessive refrigeration and energy waste. At the same time, the waste heat generated by the variable frequency compressor provides energy for the waste heat recovery module, realizes the secondary use of energy, and improves the overall energy efficiency of the system. The waste heat recovery module is integrated in the mechanical constant temperature refrigeration module, which is used to convert the waste heat generated by the mechanical constant temperature refrigeration module into electrical energy. The waste heat is converted into electrical energy, which effectively improves the energy utilization rate and reduces the energy consumption in the cold chain transportation process. The generated electrical energy can be used to assist the system operation, reduce the dependence on external power supply, and reduce the operating cost. The health and safety module is used for sterilization of microorganisms in the cargo box. By continuous sterilization, the number of microorganisms in the cargo box can be effectively reduced to prevent the goods from deteriorating and spoiling due to microbial contamination during transportation, thereby ensuring the quality and safety of the goods and reducing the loss of goods.

[0017] The liquid nitrogen rapid refrigeration module includes a liquid nitrogen storage tank unit and a multi-stage injection valve unit. The liquid nitrogen storage tank unit provides a stable supply of liquid nitrogen to ensure continuous operation of the liquid nitrogen rapid refrigeration module. The multi-stage injection valve unit cooperates with the intelligent control module to realize precise control of the liquid nitrogen injection amount, which not only ensures the rapid cooling effect but also avoids waste of liquid nitrogen, thereby improving the refrigeration efficiency and economy. The multi-stage injection valve unit is used to precisely adjust the liquid nitrogen injection amount according to the instructions of the intelligent control module. Precise adjustment of the liquid nitrogen injection amount can make the liquid nitrogen rapid refrigeration module run efficiently under different working conditions, avoid the increase in cost caused by excessive use of liquid nitrogen, and reduce the potential damage to the goods at low temperature, thereby achieving a balance between refrigeration effect and cost. The liquid nitrogen storage tank unit is used for storing liquid nitrogen, and stable liquid nitrogen storage guarantees the emergency response capability of the liquid nitrogen rapid refrigeration module. When the temperature of the container suddenly rises, liquid nitrogen can be quickly released for cooling to ensure the safety and reliability of the cold chain transportation environment.

[0018] The mechanical constant temperature refrigeration unit includes a variable frequency compression unit, a pressure balance unit and an ejector refrigeration cycle unit. The three units work together to build a stable and efficient refrigeration cycle system. The variable frequency compression unit realizes dynamic adjustment of refrigerating capacity. The pressure balance unit guarantees stable operation of the system. The ejector refrigeration cycle unit uses waste heat to improve refrigeration efficiency, and improves the performance of the mechanical constant temperature refrigeration unit. The variable frequency compression unit is used to adjust the speed of the compressor according to the instructions of the intelligent control module, and dynamically adjust the refrigerating capacity. By dynamically adjusting the refrigerating capacity, the mechanical constant temperature refrigeration unit can adapt to different refrigeration requirements, avoid frequent start-stop and overrunning of the compressor, prolong the service life of the equipment, and reduce energy consumption. The pressure balance unit is used to balance the pressure in the refrigeration cycle system to prevent pressure fluctuations from affecting refrigeration efficiency and equipment life. A stable pressure environment can ensure stable operation of the refrigeration cycle system, reduce refrigeration efficiency and equipment failure caused by abnormal pressure, reduce maintenance costs, and improve system reliability. The ejector refrigeration cycle unit is used to drive the waste heat recovered by the tail gas waste heat recovery unit, which is complementary to the variable frequency compressor refrigeration to improve the overall refrigeration efficiency. The waste heat is converted into refrigeration power, which works with the variable frequency compressor refrigeration to improve the refrigeration capacity without additional energy consumption, improve energy utilization efficiency, and reduce the operating cost of cold chain transportation.

[0019] The intelligent control module dynamically adjusts the refrigeration temperature in combination with the temperature sensor in the container. Based on real-time temperature data, it can accurately control the refrigeration system to quickly respond to temperature changes and always control the container temperature within the ideal range to ensure the quality of goods storage. At the same time, it optimizes the working mode of each module to reduce energy consumption. When ΔT≥5℃, the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration unit operate in dual mode, and the phase change heat storage plate synchronously stores cold. When the temperature fluctuates greatly, the dual-mode rapid refrigeration can quickly reduce the temperature of the container to avoid damage to the goods due to high temperature. The phase change heat storage plate synchronously stores cold to store excess cold for subsequent temperature regulation, improving the system's ability to respond to temperature changes. When 3℃≤ΔT<5℃, the mechanical constant temperature refrigeration module is the main one, and the liquid nitrogen rapid refrigeration module works intermittently to supplement the cold of the phase change heat storage plate. When the temperature fluctuates moderately, the mechanical constant temperature refrigeration module is used as the main one to maintain the temperature, and the liquid nitrogen rapid refrigeration module works intermittently to supplement the cold. This not only ensures the stability of the temperature, but also reduces the consumption of liquid nitrogen and the operating cost. When ΔT < 3℃, only the mechanical constant-temperature refrigeration unit maintains constant temperature, and the phase change cold storage plate releases cold energy on demand, when the temperature fluctuation is small, the mechanical constant-temperature refrigeration unit runs at low energy consumption, and the phase change cold storage plate releases cold energy on demand to assist temperature control, which maximizes the system energy consumption and realizes energy-saving operation.

[0020] The phase change cold storage plate of the phase change cold storage module is coated with a nano-level antibacterial coating, which contains silver ions and titanium dioxide composite components to inhibit the growth of microorganisms on the inner wall of the container. The nano-level antibacterial coating can continuously inhibit the growth of microorganisms on the inner wall of the container, prevent microorganisms from breeding and contaminating the goods on the surface of the cold storage plate, and reduce the adhesion of stains to maintain good heat exchange performance of the cold storage plate and ensure the refrigeration effect.

[0021] The waste heat recovery module adopts a combined power generation method combining thermoelectric power generation sheets and organic Rankine cycle. The thermoelectric power generation sheets are used to directly convert the medium-low temperature waste heat generated by the mechanical constant-temperature refrigeration module into electrical energy, and the organic Rankine cycle system generates electricity for high-temperature waste heat. The combined power generation method fully covers different temperature waste heat generated by the mechanical constant-temperature refrigeration module, greatly improves the waste heat recovery efficiency, and produces self-sufficient electrical energy, reduces the energy consumption of the whole vehicle, reduces carbon emissions, and realizes green and environmentally friendly transportation.

[0022] The health and safety module includes an ultraviolet sterilization unit and an ozone purification unit. The two sterilization units work together. The ultraviolet sterilization unit can sterilize the goods and space in real time, and the ozone purification unit can deeply clean the container. The two units are alternately operated to form a comprehensive and dead-angle-free sterilization and protection system, ensuring that the container is always in a high sanitary state and ensuring the quality and safety of the goods. The ultraviolet sterilization unit is arranged on the top and side wall of the container to sterilize the interior of the container in all directions. The ultraviolet lamps arranged in all directions can sterilize every corner of the container, effectively kill common bacteria, viruses and other microorganisms, reduce the risk of goods being contaminated by microorganisms, and ensure the safety of goods transportation. The ozone purification unit is started when the vehicle is parked and there is no goods. It uses ozone to decompose odor molecules and kill stubborn microorganisms. The strong oxidizing property of ozone can deeply decompose odor molecules and eliminate residual odors in the container. At the same time, it can kill stubborn microorganisms to provide a clean environment for the next transportation and reduce the risk of goods odor and pollution.

[0023] The embodiments of the specific implementation are the preferred embodiments of the present application, not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A refrigeration system for a cold chain transport vehicle comprising an intelligent control module, characterized in that: The output end of the intelligent control module is connected with the input end of the liquid nitrogen rapid refrigeration module, the phase change cold storage module and the mechanical constant temperature refrigeration module, the output end of the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module is connected with the input end of the phase change cold storage module, and the output end of the liquid nitrogen rapid refrigeration module is also connected with the input end of the mechanical constant temperature refrigeration module; the output end of the intelligent control module is also connected with the input end of the health safety module; and the output end of the mechanical constant temperature refrigeration module is connected with the input end of the waste heat recovery module. The intelligent control module is used for dynamically switching the refrigeration modes of the liquid nitrogen rapid refrigeration module, the mechanical constant temperature refrigeration module and the phase change cold storage module. The liquid nitrogen rapid refrigeration module is used for rapidly reducing the temperature through vaporization of liquid nitrogen and delivering the excess cold energy to the phase change cold storage module for storage, and can assist the mechanical constant temperature refrigeration module to rapidly reach the set temperature. The phase change cold storage module is made of a phase change cold storage plate made of a sodium polyacrylate composite material, which is arranged on the inner wall of the container and is used for absorbing and storing the excess cold energy generated by the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration module and releasing the cold energy to maintain the temperature stable when the temperature in the container fluctuates. The mechanical constant temperature refrigeration module is used for refrigerating through a variable frequency compressor to maintain a constant temperature environment in the container and provide waste heat for the waste heat recovery module. The waste heat recovery module is integrated in the mechanical constant temperature refrigeration module and is used for converting the waste heat generated by the mechanical constant temperature refrigeration module into electrical energy. The health safety module is used for sterilizing microorganisms in the container.

2. A refrigeration system for a cold chain transport vehicle according to claim 1, characterized in that: The liquid nitrogen rapid refrigeration module comprises a liquid nitrogen storage tank unit and a multi-stage injection valve unit. The multi-stage injection valve unit is used for accurately adjusting the liquid nitrogen injection amount according to the instruction of the intelligent control module. The liquid nitrogen storage tank unit is used for storing liquid nitrogen.

3. A refrigeration system for a cold chain transport vehicle according to claim 1, characterized in that: The mechanical constant temperature refrigeration unit comprises a variable frequency compression unit, a pressure balance unit and a jet refrigeration cycle unit. The variable frequency compression unit is used for adjusting the rotation speed of the compressor according to the instruction of the intelligent control module to dynamically adjust the refrigeration capacity. The pressure balance unit is used for balancing the pressure in the refrigeration cycle system to prevent the refrigeration efficiency and equipment life from being affected by pressure fluctuation. The jet refrigeration cycle unit is used for driving the waste heat recovered by the tail gas waste heat recovery unit to complement the variable frequency compressor refrigeration and improve the overall refrigeration efficiency.

4. The refrigeration system for a cold chain transport vehicle of claim 1, wherein: The intelligent control module dynamically adjusts the refrigeration temperature in combination with the temperature sensor in the container. When ΔT≥5℃, the liquid nitrogen rapid refrigeration module and the mechanical constant temperature refrigeration unit operate in dual mode, and the phase change cold storage plate synchronously stores cold; When 3℃≤ΔT<5℃, the mechanical constant temperature refrigeration module is the main mode, and the liquid nitrogen rapid refrigeration module intermittently works to supplement the cold of the phase change cold storage plate; When ΔT<3℃, only the mechanical constant temperature refrigeration unit maintains a constant temperature, and the phase change cold storage plate releases cold as needed.

5. A refrigeration system for a cold chain transport vehicle according to claim 1, characterized in that: The surface of the phase change cold storage plate of the phase change cold storage module is coated with a nano-level antibacterial coating, which comprises silver ions and titanium dioxide composite components to inhibit the growth of microorganisms on the inner wall of the container.

6. A refrigeration system for a cold chain transport vehicle according to claim 1, characterized in that: The waste heat recovery module adopts a combined power generation mode of thermoelectric generator and organic Rankine cycle, the thermoelectric generator is used for directly converting the medium-low temperature waste heat generated by the mechanical constant temperature refrigeration module into electric energy, and the organic Rankine cycle system is used for generating power for the high temperature waste heat.

7. A refrigeration system for a cold chain transport vehicle according to claim 1, characterized in that: The health safety module comprises an ultraviolet sterilization unit and an ozone purification unit. The ultraviolet sterilization unit is arranged on the top and side wall of the container, and can sterilize the container in all directions. The ozone purification unit is started when the vehicle is parked and has no goods, and is used for decomposing odor molecules and killing stubborn microorganisms.

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