Refrigeration system and refrigerated vehicle

Abstract

The utility model provides a kind of refrigeration system and refrigerated car belong to refrigeration technical field, including refrigeration compartment, solid-state elastic card mechanism and heat conduction mechanism.Solid-state elastic card mechanism is located the outside of refrigeration compartment, solid-state elastic card mechanism includes driver and shape memory alloy, driver releases heat by loading shape memory alloy, or driver releases cold by unloading shape memory alloy;Heat conduction mechanism includes refrigeration cycle loop and heat dissipation cycle loop that are connected with solid-state elastic card mechanism, refrigeration cycle loop is located the inside of refrigeration compartment, and heat dissipation cycle loop is located the outside of refrigeration compartment.The utility model provides a kind of refrigeration system, reduces power shunt and power waste from source, avoids the problem of low energy efficiency caused by additional consumption of power or power in traditional system.Improves overall refrigeration energy efficiency, indirectly reduces the endurance pressure of vehicle.Eliminates the source of noise and vibration, more quiet and stable in running process.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, and more specifically, relates to a refrigeration system and a refrigerated truck. Background Technology

[0002] With socio-economic development and rising living standards, a high-quality life has become a universal pursuit, leading to a boom in the cold chain transportation industry. Its coverage has expanded from urban centers to remote areas, and its service sectors have broadened from fresh food to medical reagents, precision electronics, and other fields, demonstrating enormous development potential. As the core equipment of cold chain transportation, the performance of refrigerated truck refrigeration systems directly determines the quality of cargo preservation, transportation costs, and operational efficiency. However, current refrigeration solutions for refrigerated trucks still have significant shortcomings, making it difficult to meet the industry's high-quality development needs.

[0003] Currently, mainstream refrigeration systems for refrigerated trucks are mainly divided into two categories: one relies on the vehicle's engine to directly drive the compressor, and the other is powered by the electric vehicle's battery. Both solutions revolve around traditional compression refrigeration technology. While this technology is mature, it has revealed its low energy efficiency in refrigerated truck scenarios. In engine-driven mode, the refrigeration system consumes engine output power, increasing fuel consumption and exacerbating power loss during long-distance transport. Furthermore, in battery-powered mode, the high energy consumption of the refrigeration system rapidly depletes battery power, significantly shortening the electric vehicle's driving range and severely limiting the refrigerated truck's transport radius. Simultaneously, the compressor's operating noise and vibration are significant, limiting its application in noise-sensitive environments. Utility Model Content

[0004] The purpose of this invention is to provide a refrigeration system that addresses the problems of low energy efficiency, high noise, and high vibration in traditional compressor-based refrigeration systems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a refrigeration system, comprising: Refrigerated compartment; A solid-state ejector mechanism is located outside the refrigeration compartment. The solid-state ejector mechanism includes a driver and a shape memory alloy. The driver releases heat by loading the shape memory alloy, or the driver releases cold energy by unloading the shape memory alloy. The heat conduction mechanism includes a refrigeration circulation loop and a heat dissipation circulation loop, both connected to the solid spring mechanism. The refrigeration circulation loop is located inside the refrigeration compartment and is used to conduct the cooling capacity into the refrigeration compartment via a refrigeration heat exchange medium. The heat dissipation circulation loop is located outside the refrigeration compartment and is used to conduct the heat to the outside of the refrigeration compartment via a heat dissipation heat exchange medium.

[0006] In one possible implementation, the inner wall of the refrigeration compartment is provided with a guiding structure that extends along the length of the refrigeration compartment to guide the cooling capacity of the refrigeration cycle circuit to be conducted along the length of the refrigeration compartment.

[0007] In one possible implementation, the bootstrap structure includes: A liquid cooling channel is disposed along the length of the refrigeration compartment on the inner wall of the refrigeration compartment. The liquid cooling channel has two liquid ports connecting to the refrigeration circulation loop, so that the liquid refrigeration heat exchange medium enters from one liquid port and flows back to the refrigeration circulation loop from the other liquid port; or A gas cooling channel is disposed along the length of the refrigeration compartment on the inner wall of the refrigeration compartment. The gas cooling channel has at least one gas port facing the refrigeration cycle loop. A fan is disposed inside the refrigeration compartment, and the fan is used to introduce the cooling capacity of the refrigeration cycle loop into the gas cooling channel through the gas port; or The cooling chamber includes a liquid cooling channel and a gas cooling channel. The liquid cooling channel is disposed along the length of the refrigeration chamber on the inner wall of the refrigeration chamber, and the gas cooling channel is disposed along the extension direction of the liquid cooling channel on the side of the liquid cooling channel away from the inner wall of the refrigeration chamber.

[0008] In one possible implementation, the refrigeration system further includes: A cold storage component is installed inside the refrigeration compartment; When the refrigerated compartment is not refrigerated, the cold storage component is used to store the cold energy of the refrigeration cycle loop.

[0009] In one possible implementation, the cold storage component includes: A cold storage shell with a built-in cold storage agent is installed on the inner wall of the refrigeration compartment and located between two adjacent liquid cooling channels or gas cooling channels.

[0010] In one possible implementation, the cross-section of the cold storage shell is a first cross-sectional structure that increases from away from the inner wall of the refrigeration chamber to closer to the inner wall of the refrigeration chamber, and the cross-section of the adjacent liquid cooling channel or the adjacent gas cooling channel is a second cross-sectional structure that decreases from away from the inner wall of the refrigeration chamber to closer to the inner wall of the refrigeration chamber. The first cross-sectional structure and the second cross-sectional structure are mortised and tenoned to allow two adjacent liquid cooling channels or gas cooling channels to form a circumferential limit on the cold storage shell.

[0011] In one possible implementation, the refrigeration system further includes: A power generation component is disposed on the outer wall of the refrigeration compartment. The power generation component is electrically connected to the solid-state spring mechanism to provide power for the driver to load or unload the shape memory alloy.

[0012] In one possible implementation, the refrigerated compartment is provided with a door, and a variable temperature zone is formed inside the refrigerated compartment near the door. A temperature detection module and a switch detection module that are electrically connected are provided in the variable temperature zone, and the temperature detection module is electrically connected to the solid spring mechanism. The switch detection module is used to detect the time data of the door opening and closing. The temperature detection module is used to detect the temperature rise data of the temperature-changing area after the door is opened and closed.

[0013] In one possible implementation, the interior of the refrigerated compartment has a high-temperature zone and a low-temperature zone; The refrigeration cycle loop is only provided in the low-temperature zone; or The refrigeration cycle circuit includes two refrigeration cycle sub-circuits, which are respectively located in the high-temperature zone and the low-temperature zone. The refrigeration cycle sub-circuit located in the high-temperature zone provides less cooling capacity than the refrigeration cycle sub-circuit located in the low-temperature zone.

[0014] The beneficial effects of the refrigeration system provided by this utility model are as follows: Compared with the prior art, the solid-state spring mechanism realizes the conversion between hot and cold by loading and unloading the shape memory alloy through the driver, without relying on the vehicle engine power or consuming a large amount of power battery power. It reduces power diversion and power waste from the source and avoids the problem of low energy efficiency caused by the extra power or power consumption of traditional systems.

[0015] Meanwhile, the refrigeration and heat dissipation circulation loops of the heat transfer mechanism are connected to a solid-state spring-loaded mechanism. The refrigeration circulation loop conducts cold energy into the refrigeration compartment without energy leakage, while the heat dissipation circulation loop conducts heat to the outside of the refrigeration compartment without energy return. This heat exchange mode avoids the energy loss caused by chaotic heat exchange in traditional systems, further improving overall cooling efficiency and indirectly reducing the vehicle's range pressure.

[0016] Furthermore, the core refrigeration component of this system is a solid-state spring-loaded mechanism, which achieves heat transfer through the physical deformation of shape memory alloys. Without compressors or other mechanical moving parts, it eliminates the source of noise and vibration, resulting in quieter and smoother operation. This low-noise and low-vibration characteristic allows the refrigeration system to be adapted to noise-sensitive scenarios that traditional systems struggle to cover. For example, in the transportation of medical reagents, it avoids the impact of vibration on reagent stability; in short-distance cold chain delivery around residential areas, it reduces noise disturbance to residents' lives, significantly improving the adaptability of refrigerated trucks and better meeting the development needs of high-quality cold chain transportation.

[0017] This utility model also provides a refrigerated truck, including the aforementioned refrigeration system.

[0018] The beneficial effects of the refrigerated truck provided by this utility model are as follows: compared with the prior art, since the refrigerated truck uses the above-mentioned refrigeration system, it has the same beneficial effects as the above-mentioned refrigeration system, which will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the refrigeration system provided by this utility model; Figure 2 A schematic diagram of the structure adapted to the guiding structure and refrigeration cycle circuit provided by this utility model; Figure 3 A schematic diagram of the structure of the liquid cooling tank and the gas cooling tank used in this utility model; Figure 4 Installation diagram of the cold storage component provided by this utility model; Figure 5 This utility model provides a schematic diagram of the structure of a refrigeration system.

[0021] In the picture: 100. Solid spring mechanism; 200. Refrigeration circulation loop; 300. Heat dissipation circulation loop; 400. Liquid cooling channel; 500. Gas cooling channel; 600. Cold storage shell; 610. Cold storage agent; 700. Refrigeration compartment; 710. Side door; 720. Rear door; 730. Partition; 731. Connecting door; 701. High temperature zone; 702. Low temperature zone; 800. Fan. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects 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.

[0023] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0024] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0025] Please see Figure 1 The present invention provides a refrigeration system. A refrigeration system includes a refrigeration compartment 700, a solid spring mechanism 100, and a heat transfer mechanism.

[0026] The solid-state ejector mechanism 100 is located outside the refrigeration compartment 700. The solid-state ejector mechanism 100 includes a driver and a shape memory alloy. The driver releases heat by loading the shape memory alloy, or the driver releases cold energy by unloading the shape memory alloy. The heat conduction mechanism includes a refrigeration circulation loop 200 and a heat dissipation circulation loop 300, both connected to the solid-state ejector mechanism 100. The refrigeration circulation loop 200 is located inside the refrigeration compartment 700 and is used as a refrigeration heat exchange medium to conduct cold energy into the refrigeration compartment 700. The heat dissipation circulation loop 300 is located outside the refrigeration compartment 700 and is used as a heat dissipation heat exchange medium to conduct heat to the outside of the refrigeration compartment 700.

[0027] This utility model provides a refrigeration system that, compared to existing technologies, relies on engine power or battery power for traditional compressor systems, resulting in continuous power diversion or battery consumption and energy loss. In this solution, the solid-state spring mechanism 100 uses a driver to load and unload the shape memory alloy to achieve heat transfer, eliminating the need for vehicle engine power or significant battery consumption. This reduces power diversion and energy waste at the source, avoiding the energy inefficiency problems caused by additional power or energy consumption in traditional systems.

[0028] Meanwhile, the refrigeration circulation loop 200 and the heat dissipation circulation loop 300 of the heat conduction mechanism are connected to the solid spring clip mechanism 100. The refrigeration circulation loop 200 conducts cold energy into the refrigeration compartment 700 without energy leakage, while the heat dissipation circulation loop 300 conducts heat to the outside of the refrigeration compartment 700 without energy return. This heat exchange mode avoids the energy loss caused by chaotic heat exchange in traditional systems, further improving the overall cooling efficiency and indirectly reducing the vehicle's range pressure.

[0029] Furthermore, the noise and vibration of traditional systems mainly originate from the mechanical operation of the compressor. In contrast, the core refrigeration component of this solution is the solid-state spring-loaded mechanism 100, which achieves heat transfer through the physical deformation of a shape memory alloy. Without compressors or other moving mechanical parts, it eliminates the source of noise and vibration at its root, resulting in quieter and more stable operation. This low-noise and low-vibration characteristic allows the refrigeration system to be adapted to noise-sensitive scenarios that traditional systems struggle to cover. For example, in the transportation of medical reagents, it avoids the impact of vibration on reagent stability; in short-distance cold chain delivery around residential areas, it reduces noise disturbance to residents' lives, significantly improving the adaptability of refrigerated trucks and better meeting the development needs of high-quality cold chain transportation.

[0030] It is worth noting that loading in this refrigeration system can be understood as applying external force to the shape memory alloy through a driver, causing the shape memory alloy to transform from austenite to martensite, releasing latent heat and forming heat, which in turn causes the temperature of the shape memory alloy itself to rise; unloading can be understood as unloading the external force, causing the shape memory alloy to transform from martensite back to austenite, absorbing latent heat and forming cold, which in turn causes the temperature of the shape memory alloy itself to drop.

[0031] The inner wall of the refrigerated compartment 700 is equipped with a guiding structure that extends along the length of the refrigerated compartment 700. This guiding structure guides the cold energy from the refrigeration cycle circuit 200 along the length of the refrigerated compartment 700. As a directional cold energy conduction channel, the guiding structure rapidly transfers the cold energy released by the refrigeration cycle circuit 200 along the length of the refrigerated compartment 700, preventing cold energy from accumulating only near the refrigeration circuit. This significantly shortens the time it takes for the refrigerated compartment 700 to reach a uniform overall temperature after refrigeration is started, making it particularly suitable for long-wheelbase refrigerated trucks and solving the problem of large temperature differences between the front and rear of the truck.

[0032] For example, for goods stacked along the length, the guiding structure can ensure that the cooling energy is evenly distributed to every area of ​​the goods along the length, preventing the goods near the cooling end from becoming too cold and the goods far from the cooling end from not reaching the required temperature, thereby reducing the loss rate of goods due to temperature fluctuations.

[0033] By adopting the above-mentioned guiding structure, it is not necessary to increase the cooling power to compensate for the loss of cooling capacity in the length direction. Instead, the guiding structure forms directional conduction, which can reduce the operating load of the refrigeration system and indirectly reduce energy consumption while ensuring that the overall temperature meets the standard.

[0034] Based on the aforementioned guide structure along the length direction, guide structures along the width and height directions can also be added. For refrigerated trucks with a large width and height of refrigerated compartment 700, all space areas within the refrigerated compartment 700 can be fully covered, thereby eliminating temperature gradients in the width and height directions.

[0035] Please see Figure 2 The guiding structure includes a liquid cooling tank 400 and / or a gas cooling tank 500.

[0036] In the first embodiment, the liquid cooling tank 400 adopts a closed tank structure with an overall arc-shaped cross-section, made of aluminum alloy, which ensures high thermal conductivity and resists the squeezing and collision of goods. Each liquid cooling tank 400 has a liquid port at both ends, one end being the liquid inlet port and the other end being the liquid outlet port. Both ports are connected to the refrigeration circulation loop 200 through pipes to form a closed circulation path.

[0037] The liquid cooling tank 400 is fixed to the inner wall of the refrigeration compartment 700. The spacing between the tank sections is set according to the length of the refrigeration compartment 700, generally 30-50cm, to ensure that the cooling capacity can evenly cover every area along the length of the refrigeration compartment 700. The cooling heat exchange medium is antifreeze, such as an aqueous solution of ethylene glycol, which is driven by the power component of the refrigeration circulation loop 200, such as a fluid pump, to flow into the liquid cooling tank 400 from the inlet port. During the flow in the tank, it exchanges heat with the interior of the refrigeration compartment 700, and then flows back to the refrigeration circulation loop 200 from the outlet port, completing the cooling capacity transfer cycle.

[0038] In the above embodiments, the enclosed tank structure can completely enclose the liquid heat exchange medium, preventing leakage and reducing the unnecessary diffusion of cold energy to the outside of the tank during conduction, thus improving the efficiency of cold energy utilization. Furthermore, the aluminum alloy liquid cooling tank 400 not only has good thermal conductivity but also high hardness, capable of withstanding long-term stacking and compression of goods within the refrigerated compartment 700, preventing refrigeration system failure due to structural damage and extending the equipment's service life.

[0039] In the second embodiment, the gas cooling channel 500 is an open channel with openings at both ends, a U-shaped cross-section, and is made of stainless steel. Each gas cooling channel 500 has 2-3 gas ports on the side closest to the refrigeration cycle loop 200. A fan 800 is installed inside the refrigeration compartment 700, with the fan's outlet facing the gas ports, forming an airflow path through the refrigeration cycle loop 200, the gas ports, and the gas cooling channel 500.

[0040] When the refrigeration system is running, the refrigeration cycle loop 200 outputs cooling capacity, the fan 800 starts, and blows the cooling capacity into the gas cooling channel 500 through the gas port. The cooling capacity diffuses along the length of the channel and is finally discharged from the openings at both ends of the gas cooling channel 500, evenly filling the entire interior space of the refrigeration compartment 700.

[0041] In the above embodiment, the open-type cooling tank, combined with the forced airflow of the fan 800, allows the cold air to quickly diffuse along its length to every corner of the refrigerated compartment 700. Compared to natural convection cooling, the refrigerated compartment 700 reaches the set temperature in a shorter time, making it particularly suitable for scenarios where goods need to be quickly reheated after loading and unloading. Furthermore, the cold air evenly covers the surface of the goods in the form of gas flow, avoiding the problem of frozen goods caused by excessively low local temperatures in traditional liquid cooling tanks 400. This makes it more suitable for temperature-sensitive goods such as fruits, vegetables, and medical reagents.

[0042] In the third embodiment, please refer to Figure 3 The liquid cooling channel 400 and the gas cooling channel 500 coexist and work together. Specifically, the gas cooling channel 500 is positioned along the extension direction of the liquid cooling channel 400 on the side of the liquid cooling channel 400 away from the inner wall of the refrigeration compartment 700. The liquid cooling channel 400 directly conducts cooling energy to the refrigeration compartment 700 through the channel body, while the gas cooling channel 500 diffuses cooling energy with the assistance of airflow, forming a dual cooling structure.

[0043] The gas cooling channel 500 is located on the outer side of the liquid cooling channel 400, away from the inner wall of the refrigerated compartment 700. The two channels have the same width and are stacked on top of each other. When goods are compressed inside the refrigerated compartment 700, they will first come into contact with the gas cooling channel 500, avoiding direct force on the liquid cooling channel 400. This significantly reduces the probability of leakage from the liquid cooling channel 400 due to collision and improves the stability of system operation.

[0044] The refrigeration system also includes a cold storage component. This component is located within the refrigeration compartment 700; when the compartment 700 is not refrigerating, the cold storage component stores the cooling capacity of the refrigeration cycle loop 200. The storage and release of cooling capacity by the cold storage component can be flexibly switched according to the usage scenario, and is divided into active energy replenishment mode and passive release mode.

[0045] In active energy replenishment mode, when the refrigeration system is running (or the refrigerated truck is charging / recharging), the cold storage component is connected to the refrigeration cycle circuit 200 through the side interface. The cold energy generated by the solid spring mechanism 100 is transported to the cold storage component through the refrigeration cycle circuit 200, so that the cold storage agent 610 can complete the cold storage. Energy can be replenished without disassembling the component, which is suitable for the mobile use scenario of new energy refrigerated trucks.

[0046] In passive release mode, when the refrigeration system is not in a refrigeration state (such as when the refrigerated truck is turned off or shut down for energy saving), the cold storage component slowly releases the stored cold energy into the refrigerated compartment 700 through the high thermal conductivity of the shell, maintaining the temperature of the refrigerated compartment 700 within the set range and achieving energy-free cold preservation.

[0047] Traditional refrigeration systems experience a rapid temperature rebound in the refrigerated compartment (700°C) upon shutdown, causing goods (such as fresh produce and reagents) to spoil. Cold storage components, however, passively release stored cold energy, extending the cooling time. For example, when refrigerated trucks need to make temporary stops for unloading during long-distance transport (engine off), or when delivering goods in remote areas with power outages, cold storage components effectively maintain the required temperature for the goods, reducing spoilage due to temperature fluctuations. Furthermore, frequent start-stop cycles of the refrigeration system lead to soaring energy consumption. Cold storage components store cold energy while the refrigeration system is running and release it when the refrigerated compartment (700°C) temperature approaches the set upper limit, maintaining the temperature without restarting the refrigeration system. Compared to traditional continuous operation, energy consumption is significantly reduced, especially suitable for new energy refrigerated trucks, indirectly extending the vehicle's driving range.

[0048] Please see Figure 4 The cold storage component includes a cold storage shell 600. The cold storage shell 600 contains a cold storage refrigerant 610. The cold storage shell 600 is a closed cavity structure, made of a high thermal conductivity material compatible with the liquid cooling channel 400 and the gas cooling channel 500, such as aluminum alloy or stainless steel. This ensures that the shell can quickly conduct cold energy while also withstanding the compression and impact of goods inside the refrigerated compartment 700. The cold storage refrigerant 610 filling the shell is matched according to the refrigeration requirements. For refrigeration scenarios (0-8℃), a liquid sensible heat cold storage refrigerant 610, such as a modified ethylene glycol aqueous solution, is selected; for freezing scenarios (below -18℃), a solid phase change cold storage refrigerant 610, such as a polyol composite cold storage refrigerant 610, is selected. The cold storage refrigerant 610 fills 90%-95% of the internal space of the shell, with a small amount of expansion space reserved to avoid damage to the cold storage shell 600 due to phase change volume changes.

[0049] The cold storage shell 600 is installed on the inner wall of the refrigeration compartment 700 and located between two adjacent liquid cooling channels 400 or gas cooling channels 500. The cold storage shell 600 is directly embedded in the groove between the adjacent cooling channels, eliminating the need for additional installation space within the refrigeration compartment 700 and thus not occupying cargo storage area.

[0050] The cross-section of the cold storage shell 600 is a first cross-sectional structure that increases in width from the side furthest from the inner wall of the refrigeration compartment 700 towards the side furthest from the inner wall of the refrigeration compartment 700. That is, the side of the cold storage shell 600 closest to the inner wall of the refrigeration compartment 700 (bottom) is wider, and the side furthest from the inner wall of the refrigeration compartment 700 (top) is narrower. The cross-section of the adjacent liquid cooling channel 400 or the adjacent gas cooling channel 500 is a second cross-sectional structure that decreases in width from the side furthest from the inner wall of the refrigeration compartment 700 towards the side furthest from the inner wall of the refrigeration compartment 700. Taking the liquid cooling channel 400 as an example, the side of the liquid cooling channel 400 closest to the inner wall of the refrigeration compartment 700 (bottom) is narrower, and the side furthest from the inner wall of the refrigeration compartment 700 (top) is wider.

[0051] This structure creates a recessed space, narrower at the top and wider at the bottom, between two adjacent cooling channels. This space perfectly matches the first cross-sectional structure of the cold storage shell 600, which is also narrower at the top and wider at the bottom, forming a mortise and tenon joint. When the cold storage shell 600 is embedded into the recessed space between two adjacent cooling channels, the trapezoidal side of the cold storage shell 600 is equidistant from the trapezoidal side of the cooling channel, with a gap of 1-2 cm, which can compensate for volume changes due to thermal expansion and contraction. The second cross-sectional structure of the cooling channel, wider at the top and narrower at the bottom, provides lateral restraint to the cold storage shell 600, restricting its left-right movement. The width of the top of the cooling channel is the same as the width of the top of the cold storage shell 600, and the height of the cold storage shell 600 is designed to be slightly lower than the height of the cooling channel, with a difference of about 2 cm, further providing longitudinal restraint, restricting its up-down movement. Finally, through the complementary fit of the cross-sectional structures, the circumferential restraint of the cold storage shell 600 can be achieved without additional bolts or clips, preventing displacement of the cold storage shell 600 when the refrigerated truck is bumpy.

[0052] Preferably, when the refrigerant 610 is solid, the pre-cooled solid refrigerant 610 can passively release its cooling capacity during refrigerated truck transportation, eliminating the need for continuous operation of the solid spring-loaded refrigeration and heating device. This is particularly suitable for long-distance transportation scenarios, reducing the frequency of device start-ups and shutdowns, lowering overall energy consumption, and indirectly extending the driving range of new energy refrigerated trucks. When the refrigerant 610 is liquid, it can be directly connected to the solid spring-loaded refrigeration and heating device, which is especially suitable for scenarios requiring lower cooling temperatures. By unloading the shape memory alloy to generate basic cooling capacity, the liquid refrigerant 610 carries the stored cooling capacity into the refrigeration cycle loop 200. After being superimposed with the basic cooling capacity, it is conducted to the interior of the refrigerated compartment 700 through the cooling channel, quickly lowering the temperature to the target low temperature and maintaining stability.

[0053] Preferably, the refrigeration system also includes a power generation component. The power generation component is designed for mobile applications of the refrigeration compartment 700 and employs a complementary renewable energy power generation design. Specifically, it includes two types: photovoltaic power generation components and wind power generation components, which can be installed individually or in combination, as detailed below: The photovoltaic power generation module consists of multiple foldable photovoltaic panels, a photovoltaic controller, and an energy storage battery. The photovoltaic panels are made of monocrystalline silicon and can be installed on the top and / or sides of the refrigeration compartment 700, depending on the area of ​​the outer wall. The photovoltaic controller and energy storage battery are integrated into a waterproof box on the outer wall of the refrigeration compartment 700. The controller is used to regulate the voltage and current of the photovoltaic panels to prevent overload damage, while the energy storage battery is used to store photovoltaic energy to ensure power supply even when there is no sunlight.

[0054] The wind power electronic assembly consists of a miniature vertical axis wind turbine, a wind turbine generator, and a rectifier and voltage regulator. The wind turbine is made of lightweight nylon and is installed on the front outer wall of the refrigerated compartment 700 to ensure maximum airflow capture during operation. The wind turbine generator and the rectifier and voltage regulator are also integrated into a waterproof box. The generator converts the mechanical energy of the wind turbine rotation into electrical energy, which is then processed into stable DC power by the rectifier and voltage regulator before being supplied to the energy storage battery or directly to the solid-state ejector mechanism 100.

[0055] In addition, photovoltaic power generation modules and wind power generation modules can be applied to the refrigerated compartment 700. The wind power generation module is designed for the mobile characteristics of refrigerated trucks, with the wind turbine facing the direction of travel. When the refrigerated truck is moving, the airflow can drive the wind turbine to rotate and generate electricity. At the same time, the photovoltaic power generation module can continuously generate electricity under daylight conditions. The two form a complementary mode of mobile wind power generation and static sunlight power generation, ensuring that the refrigerated truck can provide stable power to the solid-state spring-loaded mechanism 100 during transportation, avoiding refrigeration interruption due to lack of external power.

[0056] The photovoltaic panels and wind turbine of the power generation component are both installed on the outer wall of the refrigeration compartment 700, avoiding key components such as the refrigeration compartment 700 door and the heat dissipation circulation loop 300. The top photovoltaic panel does not block the heat dissipation vent of the heat dissipation circulation loop 300, the side photovoltaic panel does not affect the opening and closing of the door, and the front wind turbine does not interfere with the driving line of sight and aerodynamic design of the refrigerated truck, ensuring that the power generation component has no functional conflict with other components of the refrigeration system.

[0057] Please see Figure 5 The refrigerated compartment 700 is equipped with doors, including a rear door 720 and side doors 710. A temperature-variable zone forms near the doors inside the refrigerated compartment 700. When the doors are opened, hot outside air rushes in rapidly, causing the temperature within a 1-2 meter radius of the door to rise first; this area is the temperature-variable zone. The temperature fluctuation in this zone is much greater than in other areas inside the compartment, making it a key area affecting the overall temperature stability of the compartment.

[0058] The variable temperature area is equipped with an electrically connected temperature detection module and a switch detection module. The temperature detection module is electrically connected to the switch of the solid-state spring mechanism 100. The detection module is used to detect the time data of the door opening and closing; the temperature detection module is used to detect the temperature rise data of the variable temperature area after the door is opened and closed.

[0059] Specifically, the temperature detection module consists of a high-precision temperature sensor (such as a platinum resistance sensor) and a data transmission unit. It is installed on the inner wall or side wall of the top of the compartment near the door within the variable temperature zone. This location ensures it is not obstructed by cargo and can quickly capture temperature changes when hot air enters. The sensor housing is made of waterproof and dustproof material, such as ABS plastic, to prevent condensation or cargo dust inside the compartment from affecting detection accuracy. The data transmission unit is electrically connected to the control terminal of the solid-state spring clip mechanism 100 via wires, ensuring that temperature rise data is transmitted to the core control components of the refrigeration system in real time. The switch detection module uses contact or non-contact door magnetic sensors, installed at the junction of the door and the compartment door frame. For the rear door 720, the switch detection module sensors are fixed to the top of the door frame and the top of the door; for the side door 710, the switch detection module is fixed to the side of the door frame and the side of the door. The switch detection module has a built-in timing unit. When the door is opened, the sensor triggers the timing function to start recording the door opening time. When the door is closed, the timing stops and the time data from opening to closing is automatically generated. At the same time, it is electrically connected to the temperature detection module through wires to realize the synchronous correlation of the data of the two.

[0060] When the operator opens the door, the sensor of the switch detection module senses the door separating and immediately starts timing, while sending a signal to the temperature detection module to start detection. After receiving the signal, the temperature detection module begins to collect temperature data of the variable temperature area in real time, and records key parameters such as the initial temperature, maximum temperature rise, and average temperature rise during the opening of the door. When the door is closed, the switch detection module stops timing and generates time data (such as door opening time b seconds), and the temperature detection module stops collecting data simultaneously and generates temperature rise data (such as average temperature rise c℃). The two data are integrated and transmitted to the control terminal of the solid-state spring mechanism 100. The solid-state card ejector mechanism 100 automatically adjusts the loading / unloading frequency of the driver to the shape memory alloy according to the preset temperature / time / cooling capacity correlation model. For example, if the required temperature is a℃, the door is opened for b seconds and the temperature rises by c℃, it needs to run at the highest energy efficiency ratio for d seconds. This allows it to quickly replenish the cooling capacity to the variable temperature area until the temperature of that area returns to the set value.

[0061] Please see Figure 5 The interior of the refrigeration compartment 700 has a high-temperature zone 701 and a low-temperature zone 702. A partition 730 is installed inside the refrigeration compartment 700, which divides the interior space of the refrigeration compartment 700 into two spaces, namely the high-temperature zone 701 and the low-temperature zone 702. The required temperature of the high-temperature zone 701 is higher than that of the low-temperature zone 702.

[0062] The partition 730 may be equipped with an openable and closable connecting door 731 to enable the connection and closure of the high-temperature zone 701 and the low-temperature zone 702.

[0063] Specifically, multiple solid-state card ejector mechanisms 100 can be set up, each corresponding to a high-temperature zone 701 and a low-temperature zone 702. That is, each solid-state card ejector mechanism 100 corresponds to one high-temperature zone 701 or one low-temperature zone 702. Multiple solid-state card ejector mechanisms 100 can work simultaneously or separately for the high-temperature zone 701 or the low-temperature zone 702. Each zone is temperature-controlled by an independent mechanism, and the cooling output can be adjusted independently, avoiding the problem of large temperature deviations caused by a single mechanism controlling the temperature. This is suitable for scenarios with high temperature accuracy requirements, such as transporting refrigerated fruits and vegetables and frozen meats simultaneously.

[0064] The above solution does not require all mechanisms to be continuously running. When the temperature in a certain area reaches the standard, the corresponding mechanism can be suspended, and only the temperature control of another area can be maintained. Compared with the full-load operation of a single mechanism, energy consumption can be significantly reduced.

[0065] Alternatively, a single solid-state spring-loaded mechanism 100 can simultaneously cool both the high-temperature zone 701 and the low-temperature zone 702. In this case, the refrigeration cycle loop 200 includes two sub-loops, located in the high-temperature zone 701 and the low-temperature zone 702 respectively. The cooling capacity provided by the sub-loop in the high-temperature zone 701 is less than that provided by the sub-loop in the low-temperature zone 702, thereby achieving the goal of a higher temperature in the high-temperature zone 701 than in the low-temperature zone 702. This eliminates the need for multiple solid-state spring-loaded mechanisms 100; dual-zone temperature control can be achieved simply by splitting the loop, reducing equipment costs and minimizing the space occupied by equipment on the exterior wall of the compartment.

[0066] In the above scheme, a single mechanism drives a dual-loop system, avoiding synchronization problems when multiple mechanisms operate in coordination, and reducing the number of failure points, thus reducing the difficulty and frequency of later maintenance.

[0067] Alternatively, the cooling cycle loop 200 of the solid-state card ejector mechanism 100 can be set only in the low-temperature zone 702, while the high-temperature zone 701 neither cools nor heats. In this case, the high-temperature zone 701 becomes a normal temperature zone, and its required temperature is also higher than that of the low-temperature zone 702. Only the low-temperature zone 702 needs active cooling, while the high-temperature zone 701 has no additional energy consumption. Compared to active temperature control in both zones, the overall energy consumption is significantly reduced. This is suitable for scenarios where the high-temperature zone 701 does not have strict low-temperature requirements, such as transporting seafood that needs to be frozen and dry goods that only need to be stored at room temperature at the same time.

[0068] The above solution does not require complex circuit splitting or multi-mechanism coordination, has the simplest structure, and is convenient to install and maintain.

[0069] In special cases, the high-temperature zone 701 can become a heating zone. Specifically, the cooling circulation loop 200 of the solid-state card ejector mechanism 100 is located in the low-temperature zone 702, while the heat dissipation circulation loop 300 is located in the high-temperature zone 701. Waste heat generated during the operation of the solid-state card ejector mechanism 100 (which would otherwise be discharged to the outside) is recovered and reused for heating in the high-temperature zone 701, eliminating the need for additional heating equipment and improving energy efficiency. This solution can meet the special needs of one area requiring cooling and another requiring heating, such as transporting refrigerated medicines and insulated liquid reagents during winter.

[0070] The refrigeration cycle circuit 200 includes two refrigeration cycle sub-circuits, which are respectively located in the high temperature zone 701 and the low temperature zone 702. The refrigeration cycle sub-circuit located in the high temperature zone 701 provides less cooling capacity than the refrigeration cycle sub-circuit located in the low temperature zone 702.

[0071] Based on the same inventive concept, this utility model also provides a refrigerated truck, which includes the above-mentioned refrigeration system. Since the refrigerated truck uses the above-mentioned refrigeration system, it has the same beneficial effects as the above-mentioned refrigeration system.

[0072] Refrigerated trucks integrating this refrigeration system inherit all the advantages of such systems. During transportation, they do not require engine power or large amounts of battery power, effectively reducing operating costs and range anxiety. The system features various optimized functions, such as cold storage components, power generation components, and automated detection modules. Simultaneously, the solid-state refrigerant cartridge mechanism uses 100% CFC-free refrigerant, and the power generation components utilize clean energy, reducing environmental pollution. Throughout its entire lifecycle, the refrigerated truck offers comprehensive advantages in reduced energy consumption and lower operating costs, improving economic efficiency for cold chain logistics companies and adapting to various cold chain transportation needs.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A refrigeration system, characterized in that, include: Refrigerated compartment (700); A solid-state ejector mechanism (100) is located outside the refrigeration compartment (700). The solid-state ejector mechanism (100) includes a driver and a shape memory alloy. The driver releases heat by loading the shape memory alloy, or the driver releases cold energy by unloading the shape memory alloy. The heat conduction mechanism includes a refrigeration circulation loop (200) and a heat dissipation circulation loop (300) both connected to the solid spring mechanism (100). The refrigeration circulation loop (200) is located inside the refrigeration compartment (700) and is used to conduct the cooling capacity into the refrigeration heat exchange medium inside the refrigeration compartment (700). The heat dissipation circulation loop (300) is located outside the refrigeration compartment (700) and is used to conduct the heat to the outside of the refrigeration compartment (700) via a heat dissipation heat exchange medium.

2. The refrigeration system as described in claim 1, characterized in that, The inner wall of the refrigeration compartment (700) is provided with a guiding structure, which extends along the length of the refrigeration compartment (700) to guide the cooling capacity of the refrigeration cycle circuit (200) to be conducted along the length of the refrigeration compartment (700).

3. A refrigeration system as described in claim 2, characterized in that, The guiding structure includes: A liquid cooling channel (400) is disposed along the length of the refrigeration compartment (700) on the inner wall of the refrigeration compartment (700). The liquid cooling channel (400) has two liquid ports connected to the refrigeration circulation loop (200), so that the liquid refrigeration heat exchange medium enters from one of the liquid ports and flows back to the refrigeration circulation loop (200) from the other liquid port; or A gas cooling channel (500) is disposed along the length of the refrigeration compartment (700) on the inner wall of the refrigeration compartment (700). The gas cooling channel (500) has at least one gas port facing the refrigeration cycle loop (200). A fan (800) is disposed inside the refrigeration compartment (700), and the fan (800) is used to introduce the cooling capacity of the refrigeration cycle loop (200) into the gas cooling channel (500) through the gas port; or A liquid cooling channel (400) and a gas cooling channel (500) are provided. The liquid cooling channel (400) is disposed on the inner wall of the refrigeration compartment (700) along the length direction of the refrigeration compartment (700). The gas cooling channel (500) is disposed on the side of the liquid cooling channel (400) away from the inner wall of the refrigeration compartment (700) along the extension direction of the liquid cooling channel (400).

4. A refrigeration system as described in claim 3, characterized in that, The refrigeration system also includes: A cold storage component is installed inside the refrigeration compartment (700); When the refrigeration compartment (700) is not refrigerated, the cold storage component is used to store the cold energy of the refrigeration cycle loop (200).

5. A refrigeration system as described in claim 4, characterized in that, The cold storage component includes: A cold storage shell (600) with a built-in cold storage agent (610) is installed on the inner wall of the refrigeration compartment (700) and located between two adjacent liquid cooling channels (400) or gas cooling channels (500).

6. A refrigeration system as described in claim 5, characterized in that, The cross-section of the cold storage shell (600) is a first cross-sectional structure that increases from the direction away from the inner wall of the refrigeration compartment (700) towards the direction closer to the inner wall of the refrigeration compartment (700), and the cross-section of the adjacent liquid cooling channel (400) or the adjacent gas cooling channel (500) is a second cross-sectional structure that decreases from the direction away from the inner wall of the refrigeration compartment (700) towards the direction closer to the inner wall of the refrigeration compartment (700). The first cross-sectional structure and the second cross-sectional structure are mortised and tenoned to allow two adjacent liquid cooling channels (400) or gas cooling channels (500) to form a circumferential limit on the cold storage shell (600).

7. A refrigeration system as described in claim 1, characterized in that, The refrigeration system also includes: A power generation component is disposed on the outer wall of the refrigeration compartment (700), and the power generation component is electrically connected to the solid spring mechanism (100) to provide power for the drive to load or unload the shape memory alloy.

8. A refrigeration system as described in claim 1, characterized in that, The refrigerated compartment (700) is provided with a door. A temperature-changing area is formed inside the refrigerated compartment (700) near the door. A temperature detection module and a switch detection module are electrically connected in the temperature-changing area. The temperature detection module is electrically connected to the solid spring clip mechanism (100). The switch detection module is used to detect the time data of the door opening and closing; The temperature detection module is used to detect the temperature rise data of the temperature-changing area after the door is opened and closed.

9. A refrigeration system as described in claim 1, characterized in that, The interior of the refrigerated compartment (700) includes a high-temperature zone (701) and a low-temperature zone (702); The refrigeration cycle loop (200) is only located in the low-temperature zone (702); or The refrigeration cycle circuit (200) includes two refrigeration cycle sub-circuits, which are respectively located in the high temperature zone (701) and the low temperature zone (702). The refrigeration cycle sub-circuit located in the high temperature zone (701) provides less cooling capacity than the refrigeration cycle sub-circuit located in the low temperature zone (702).

10. A refrigerated truck, characterized in that, Includes the refrigeration system as described in any one of claims 1-9.

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