A dual-effect evaporation cold storage device for a vehicle cargo compartment and its cooling method

Abstract

The present invention discloses a dual-effect evaporation cold storage device for a vehicle cargo compartment and its cooling method. The cold storage device includes a cold storage box body disposed in the cargo compartment. A cold release channel that can be opened and closed and is communicated with the inside of the cold storage box body is provided on the cold storage box body. A cold storage plate assembly is provided inside the cold storage box body. The outside of the cold storage box body is connected with a cooling circulation box body. The cold storage box body and the cooling circulation box body are communicated through an air inlet and an air outlet that can be opened and closed. A first cooling assembly is provided inside the cooling circulation box body; further includes a first heat dissipation assembly disposed outside the cargo compartment, and the first heat dissipation assembly is connected to the first cooling assembly. Through a multi-modal control strategy, a split air duct design, and an optimization of the cold quantity path orientation, the full-process fine control of cold quantity storage, release, dynamics, and cold replenishment in the cold storage cargo compartment is realized. Its advantages are concentrated in improving temperature uniformity, reducing energy consumption, optimizing space utilization, and enhancing environmental adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling devices for vehicle cargo compartments, and in particular to a dual-effect evaporation cold storage device for a vehicle cargo compartment and a cooling method thereof. Background Art

[0002] In recent years, vehicle cold storage cargo compartments have been widely used in cold chain logistics due to their flexibility and energy-saving characteristics. Most of the existing technologies adopt a design scheme of directly laying phase change cold storage ice plates on the inner wall of the cargo compartment, and the cold air is forced to convect to the surface of the ice plates through a cold air blower to achieve cold storage. When the cold storage device operates alone, it relies on the passive release of cold from the ice plates to maintain the low-temperature environment inside the box; when the cold storage capacity is insufficient, the vapor compression refrigeration system needs to be started for supplementary cooling to ensure that the temperature meets the national standard requirements. However, such technologies still have the following significant defects in practical applications:

[0003] 1. The existing cold storage ice plates are directly exposed inside the cargo compartment, and the cold release rate is significantly affected by the fluctuation of the external environmental temperature, and the temperature inside the cargo compartment is uncontrollable. 2. The ice plates are centrally arranged on the wall surface of the cargo compartment, and local low-temperature areas are easily formed during the cold release process, while temperature stratification may occur in the areas far from the ice plates due to unreasonable air flow organization, resulting in poor temperature uniformity in the cargo compartment space. 3. The ice plates are easily frosted when exposed to a high-humidity environment for a long time, which not only reduces their cold storage efficiency but also increases the operating load of the cold air blower. At the same time, the rigid fixing method of the ice plates and the cargo compartment structure leads to high maintenance or replacement costs, further limiting the universality and reliability of the technology. Summary of the Invention

[0004] The object of the present invention is to provide a dual-effect evaporation cold storage device for a vehicle cargo compartment and a cooling method thereof, which can improve the cooling efficiency and temperature uniformity in view of the above problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A dual-effect evaporation cold storage device for a vehicle cargo compartment includes a cold storage box body arranged inside the cargo compartment. The cold storage box body is provided with a cold release channel that can be opened and closed and is communicated with the inside of the cold storage box body. A cold storage plate assembly is arranged inside the cold storage box body. The outside of the cold storage box body is connected with a cooling circulation box body. The cold storage box body and the cooling circulation box body are communicated through an air inlet and an air outlet that can be opened and closed. A first cooling component is arranged inside the cooling circulation box body; a first heat dissipation component arranged outside the cargo compartment is also included, and the first heat dissipation component is connected with the first cooling component;

[0007] An outer box body is jointly arranged outside the cold storage box body and the cooling circulation box body. An air inlet door that can be opened and closed is arranged on the left side and / or the right side of the outer box body; the cold release channel is arranged along the front and back;

[0008] A first blower is provided at the rear side of the cold release channel through a first air deflector, and the first blower communicates with the outer box body and the cold storage box body; the cold release channel leads forward to the outer box body, and a switchable cold release door is provided at the front side of the cold release channel;

[0009] Alternatively, a first blower is provided at the front side of the cold release channel through a first air deflector, and the first blower communicates with the outer box body and the cold storage box body; further included is an air duct assembly provided in the cargo compartment, the cold release channel leads backward to the outer box body, and the rear side of the cold release channel is connected to the air duct assembly through a switchable cold release door;

[0010] The cooling circulation box body is provided on the left side or the right side of the cold storage box body; the cold storage plate assembly includes a plurality of vertical cold storage plates, the vertical cold storage plates are arranged in the cold storage box body through rotating shafts, the rotating shafts are arranged in the up-and-down direction, and drive the vertical cold storage plates to switch in the left-and-right direction or the front-and-back direction.

[0011] Optionally, the cold storage plate assembly includes at least one layer of horizontal cold storage plate layers, the horizontal cold storage plate layers are arranged at intervals in the up-and-down direction, dividing the cold storage box body into at least two horizontal air ducts, and the horizontal air ducts communicate with each other; the air outlet is provided on one side of the uppermost horizontal air duct; the air inlet is provided on one side of the remaining horizontal air ducts below.

[0012] Optionally, one side of the horizontal cold storage plate layer close to the cooling circulation box body is in contact with the cold storage box body, an upward arc-shaped bend is connected to the side of the horizontal cold storage plate layer far from the cooling circulation box body, and there is a gap between this side and the cold storage box body; arc-shaped cold storage plates are provided between the side of the cold storage box body far from the cooling circulation box body and the top surface and the bottom surface.

[0013] Optionally, the first cooling assembly includes an evaporator, the evaporator is provided outside the air inlet, a second air deflector is provided outside the evaporator, and a second blower is provided on the second air deflector.

[0014] Optionally, a second cooling assembly is further provided in the outer box body; further included is a second heat dissipation assembly provided outside the cargo compartment, the second heat dissipation assembly is connected to the second cooling assembly; a switchable cold supplement door is further provided on the outer box body.

[0015] Optionally, the cold supplement door is provided on the front side of the outer box body; or, the cold supplement door is provided on the rear side of the outer box body, and the cold supplement door is connected to the air duct assembly.

[0016] A cooling method for a dual-effect evaporation cold storage device includes the following steps:

[0017] S1. Air enters the cold storage box body;

[0018] S2. Start the cold storage mode: Close the cold release channel. Air enters the cooling circulation box through the air inlet, is cooled by the first cooling component, then enters the cold storage box through the air outlet, and circulates continuously to freeze the cold storage plate component continuously.

[0019] S3. When the temperature of the cold storage box reaches the required value, start the cold storage mode: Isolate the cooling circulation box and the cold storage box, and store all the cold in the cold storage box.

[0020] S4. When it is necessary to cool the cargo compartment, start the cold release mode: Open the cold release channel. Air enters the cold storage box through the cold release channel, is cooled after passing through the cold storage plate component, and then enters the cargo compartment through the cold release channel to achieve cooling.

[0021] It includes the following steps:

[0022] S1. Open the cold release channel and the air inlet door of the outer box. The air in the cargo compartment enters the cold release channel through the first fan and then enters the cold storage box.

[0023] Or, when assembling the cold storage box, let the outside air remain in the box and keep it.

[0024] S2. Start the cold storage mode: Only open the air inlet, air outlet, first cooling component and the second fan. Adjust the vertical cold storage plate to the left - right direction. Air enters the left - hand or right - hand cooling circulation box through the air outlet, is cooled by the first cooling component, and then enters the cold storage box from the air inlet through the second fan. Air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer from the air inlet, flows upward from one side of the far - away cooling circulation box to the uppermost horizontal air duct, and then enters the cooling circulation box from the air outlet, and circulates continuously to freeze the cold storage plate component continuously.

[0025] S3. When the temperature of the cold storage box reaches the required value, start the cold storage mode: Close the air inlet, air outlet, first cooling component and the second fan. Isolate the cooling circulation box and the cold storage box, and store all the cold in the cold storage box.

[0026] S4. When it is necessary to cool the cargo compartment, start the cold release mode: Open the cold release door, air inlet door and the first fan. Adjust the vertical cold storage plate to the front - back direction. Air enters the outer box through the air inlet door on the side of the outer box, then enters the cold storage box through the first fan, is cooled after passing through the cold storage plate component, and then enters the cargo compartment through the cold release door forward to achieve cooling; or enters the air duct component through the cold release door backward to cool the cargo compartment.

[0027] S5. When the cold release amount is insufficient, turn on the supplementary cooling mode: turn off the first fan and the cold release door, and turn on the air inlet door, the supplementary cold door and the second cooling component; air enters the outer box through the air inlet door on the side of the outer box, is cooled after passing through the second cooling component, and then enters the cargo compartment through the supplementary cold door forward to achieve temperature reduction; or enters the air duct component through the supplementary cold door backward to cool the cargo compartment;

[0028] Meanwhile, turn on the cold storage mode: turn on the air inlet, the air outlet, the first cooling component and the second fan, and adjust the vertical cold storage plate to the left - right direction; air enters the left or right cooling circulation box through the air outlet, is cooled by the first cooling component, and then enters the cold storage box through the second fan from the air inlet; air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer from the air inlet, and flows upward from one side of the far - away cooling circulation box to the uppermost horizontal air duct, then enters the cooling circulation box from the air outlet and circulates continuously, continuously freezing the cold storage plate component.

[0029] In summary, due to the adoption of the above - mentioned technical solutions, the beneficial effects of the present invention are as follows:

[0030] A dual - effect evaporation cold storage device and its cooling method for a vehicle cargo compartment provided by the present invention realize the full - process fine control of cold storage, release, dynamic and supplementary cooling in the cold storage cargo compartment through a multi - modal control strategy, a split - type air duct design and the directional optimization of the cold quantity path. Its advantages are concentrated in improving temperature uniformity, reducing energy consumption, optimizing space utilization and enhancing environmental adaptability, overcoming the technical bottlenecks of large temperature fluctuations, low space utilization and strong environmental dependence in traditional cold storage cargo compartments. It is particularly suitable for the long - distance cold chain transportation of temperature - sensitive goods in the vehicle mobile scenario, providing a highly reliable and low - energy - consumption solution for the vehicle mobile cold chain scenario. Brief Description of the Drawings

[0031] The present invention will be described by way of examples with reference to the accompanying drawings, where:

[0032] Figure 1 is the main installation view of a dual - effect evaporation cold storage device for a vehicle cargo compartment.

[0033] Figure 2 is the top - down installation view of a dual - effect evaporation cold storage device for a vehicle cargo compartment Figure 1 .

[0034] Figure 3 is the top - down installation view of a dual - effect evaporation cold storage device for a vehicle cargo compartment Figure 2 .

[0035] Figure 4 is Figure 1 the enlarged view of part A of

[0036] Figure 5 isFigure 2 Enlarged view at position B.

[0037] Figure 6 is Figure 3 Enlarged view at position C.

[0038] Figure 7 Schematic diagram of air flow in cold storage mode.

[0039] Figure 8 Schematic diagram of air flow in cold release mode.

[0040] Figure 9 Schematic diagram of air flow in cold replenishment mode.

[0041] Markings in the figure: 1 - cargo compartment, 11 - air duct assembly, 2 - cold storage box, 21 - first deflector, 22 - first fan, 23 - cold release door, 3 - cold storage plate assembly, 31 - vertical cold storage plate, 32 - horizontal cold storage plate layer, 33 - arc-shaped cold storage plate, 4 - cooling circulation box, 41 - air inlet, 42 - air outlet, 5 - first cooling assembly, 51 - evaporator, 52 - second deflector, 53 - second fan, 6 - outer box, 61 - air inlet door, 7 - second cooling assembly, 8 - cold replenishment door, 9 - first heat dissipation assembly, 10 - second heat dissipation assembly. Detailed implementation mode

[0042] The present invention will be described in detail below with reference to the accompanying drawings.

[0043] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0044] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

[0045] A dual-effect evaporation cold storage device for a vehicle cargo compartment, as Figures 1-6 shown, includes a cold storage box 2 disposed in the cargo compartment 1, the cold storage box 2 is provided with a cold release channel that can be opened and closed and is communicated with the inside of the cold storage box 2, a cold storage plate assembly 3 is disposed in the cold storage box 2, a cooling circulation box 4 is connected to the outside of the cold storage box 2, the cold storage box 2 and the cooling circulation box 4 are communicated through an air inlet 41 and an air outlet 42 that can be opened and closed, and a first cooling assembly 5 is disposed in the cooling circulation box 4; it further includes a first heat dissipation assembly 9 disposed outside the cargo compartment 1, and the first heat dissipation assembly 9 is connected to the first cooling assembly 5;

[0046] An outer box body 6 is jointly provided on the outer sides of the cold storage box body 2 and the cooling circulation box body 4, and an openable and closable air inlet door 61 is provided on the left side and / or the right side of the outer box body 6; the cold release channel is arranged along the front and back directions;

[0047] A first fan 22 is provided at the rear side of the cold release channel through a first air guide cover 21, and the first fan 22 communicates the outer box body 6 and the cold storage box body 2; the cold release channel leads forward to the outer box body 6, and an openable and closable cold release door 23 is provided at the front side of the cold release channel;

[0048] Alternatively, a first fan 22 is provided at the front side of the cold release channel through a first air guide cover 21, and the first fan 22 communicates the outer box body 6 and the cold storage box body 2; further included is an air duct assembly 11 provided in the cargo compartment 1, the cold release channel leads backward to the outer box body 6, and the rear side of the cold release channel is connected to the air duct assembly 11 through an openable and closable cold release door 23;

[0049] The cooling circulation box body 4 is arranged on the left side or the right side of the cold storage box body 2; the cold storage plate assembly 3 includes a plurality of vertical cold storage plates 31, the vertical cold storage plates 31 are arranged in the cold storage box body 2 through rotating shafts, the rotating shafts are arranged along the up and down directions, and drive the vertical cold storage plates 31 to switch in the left and right directions or the front and back directions.

[0050] Through the switchable cold release channel and the inlet / outlet air vent 42, physical isolation in the three stages of cold storage, cold storage, and cold release is achieved. In the cold storage mode, the cold release channel is closed, and the air is forced to circulate in a closed loop between the cold storage box 2 and the cooling circulation box 4, avoiding external heat interference and unnecessary cooling of the external space, and improving the cold storage efficiency and cold storage intensity; in the cold storage mode, the cooling circulation box 4 is isolated, and the cold quantity is completely sealed inside the cold storage box 2, reducing the cold quantity loss caused by environmental temperature fluctuations; in the cold release mode, the cold release channel is directionally opened, and the on-demand release of cold quantity is realized through the optimization of the air flow path, avoiding the risk of temperature runaway caused by traditional passive cold release. Preferably, temperature sensors are provided in the cargo compartment 1 and the cold storage box 2, and the temperature sensors are connected to a logic control unit. In this solution, each switchable and rotatable component (such as multiple doors, fans, and cooling components) mentioned is connected to a control device, which can switch modes in real time and adjust the opening degree of the air vent to ensure that the temperature inside the box is stable within the set threshold, significantly reducing the start-stop frequency of the standby refrigeration system. The cold storage box 2 and the cooling circulation box 4 are designed separately, and the circulating air is actively cooled multiple times by the first cooling component 5 to accelerate the freezing rate of the cold storage plate component 3, improve the cold storage density, and ensure the cold storage intensity, without considering the impact of excessive cold storage intensity on the items in the cargo compartment. In the cold release mode, the cold air is directionally introduced into the cargo compartment 1 through the cold release channel to form a forced convection cycle, avoiding the problem of local cold quantity accumulation caused by traditional wall-mounted ice plates, improving the spatial temperature uniformity, and optimizing and improving the temperature field uniformity. The first heat dissipation component 9 and the first cooling component 5 form a thermal cycle, which can utilize the air cooling during vehicle driving or an additional heat dissipation device to enhance the heat dissipation efficiency and reduce the energy consumption of the refrigeration system. The cold storage mode can seal the cold quantity in the cold storage box 2, reduce the loss of ineffective cold release, extend the cold quantity maintenance time, and reduce the cold replenishment demand. It supports centralized cold charging during low electricity price periods or when the vehicle is stationary, and only relies on cold storage and cold release during peak periods, reducing the overall operating cost. The dynamic isolation design effectively blocks the thermal erosion of the external high-temperature and high-humidity environment on the cold storage box 2 and improves the anti-interference ability. The cooling circulation box 4 is separated from the cold storage box 2, reducing the risk of ice plate frosting, and the split structure is convenient for modular maintenance and replacement.

[0051] When the cold storage box body 2 and the cooling circulation box body 4 are arranged in the cargo compartment, in order to prevent interference with the assembly of the goods, it is preferably installed on the side of the cargo compartment. The design of the outer box body 6 allows air to enter from the side and release cold air in the front-rear direction. External air is allowed to enter the outer box body 6 and then guided to the cold storage box body 2 by the fan, so that cold air can flow smoothly inside the cargo compartment, reducing the resistance of air flow, forming an effective air convection cycle, and contributing to the improvement of cooling efficiency. The combination of the fan and the air deflector can enhance the power of air flow, making the air flow more orderly and improving the cooling efficiency. The cold air release door 23 can be opened or closed as needed to precisely control the release of cold air flow, optimize the air flow path, and improve the cooling efficiency. Optionally, the cold air release door 23 is a cold air release louver. The air duct assembly 11 can guide the air flow, enabling the cooling air to be more effectively distributed to all corners of the cargo compartment, improving the uniformity and efficiency of cooling. Further, the air duct is soft, heat-insulating, and shrinkable. Therefore, the air duct is arranged in the sandwich layer at the top of the cargo compartment, and a plurality of small holes are opened below the sandwich layer. One-way jet holes are installed in the small holes, and the cooling air is blown out vertically into the cold storage through the air duct for circulation to reduce the temperature inside the cold storage. The one-way jet holes designed in this solution, that is, a circular blade similar to a one-way valve is installed at the position of the small hole to prevent cold air from entering through the jet hole during the cold release mode, resulting in cold quantity and gas flow loss during the circulation process.

[0052] The air between the cooling circulation box body 4 and the cold storage box body 2 flows in the left-right direction, which can prevent the direct interference between the cooling circulation air flow and the air flow in the cold release channel, thus avoiding the formation of air flow short circuit or eddy current, ensuring the cooling efficiency. It also helps to save space and prevent interference with the cold release channel structure, making the internal structure of the cargo compartment more compact. The vertical cold storage plate 31 switches between the left-right direction and the front-rear direction to switch between the cold storage and cold release modes, improving the flexibility and operation convenience of the system, and forcing the cold storage air flow and the cold release channel to flow in the specified direction, ensuring the efficiency of cold storage and cold release. In addition, the vertical cold storage plate 31 can contact the air more effectively, increasing the contact area with the air, enhancing the cooling of the cold storage plate by the air during cold storage, and enhancing the cooling of the air by the cold storage plate during cold release. It should be noted that there are multiple rotating shafts, and a plurality of the vertical cold storage plates 31 are sequentially arranged on each rotating shaft in the up-down direction. There is an up-down gap between the vertical cold storage plates 31 arranged on the same rotating shaft to enable a horizontal cold storage plate to be arranged in this gap, preventing movement interference between the vertical cold storage plate 31 and the horizontal cold storage plate.

[0053] As another specific embodiment, the cold storage plate assembly 3 includes at least one layer of horizontal cold storage plate layers 32, which are arranged at intervals in the up and down direction, dividing the cold storage box 2 into at least two horizontal air ducts, and the horizontal air ducts communicate with each other; the air outlet 42 is arranged on one side of the uppermost horizontal air duct; the air inlet 41 is arranged on one side of the remaining horizontal air ducts below. The horizontal cold storage plate layers 32 are arranged at intervals in the up and down direction, dividing the cold storage box 2 into at least two horizontal air ducts, and the horizontal air ducts communicate with each other to form a continuous air flow path. Air enters the cooling circulation box 4 from the air inlet 41, is cooled by the first cooling component 5, and then enters the cold storage box 2 through the air outlet 42. The cooled air enters the cold storage box 2 from the air inlet 41, flows along the horizontal air duct, and flows upward from the lower horizontal air duct to the uppermost horizontal air duct. When the air flows in the cold storage box 2, it will pass through the horizontal cold storage plate layers 32 to cool them. The air finally re-enters the cooling circulation box 4 from the uppermost horizontal air duct through the air outlet 42, forming a closed cycle. By dividing the cold storage box 2 into multiple horizontal air ducts, the contact area between the air and the cold storage plate assembly 3 is increased, and the cooling efficiency is improved. The circulating flow of the cooling air in the cold storage box 2 can distribute the cold quantity more evenly and reduce the cooling dead angle. Since the air forms a closed cycle in the cold storage box 2, the cold storage plate assembly 3 can be cooled evenly, avoiding the problems of local overcooling or overheating. The air flows upward from the lower horizontal air duct, utilizing the principle of hot air rising, which helps natural convection and further optimizes the cooling effect. Through the continuous operation of the closed cycle, the cold storage plate assembly 3 can be continuously frozen to maintain a low-temperature environment in the cold storage box 2. Usually, it is sufficient to make the internal temperature of the cold storage box 2 ≤ -18°C. Among them, each layer of the horizontal cold storage plate layer 32 can be spliced by multiple horizontal cold storage plates or can be in the form of a single horizontal cold storage plate.

[0054] As another specific embodiment, one side of the horizontal cold storage plate layer 32 close to the cooling circulation box 4 is in contact with the cold storage box 2, and an upward arc-shaped bend is connected to the side of the horizontal cold storage plate layer 32 far from the cooling circulation box 4, and there is a gap between this side and the cold storage box 2; an arc-shaped cold storage plate 33 is provided between the side of the cold storage box 2 far from the cooling circulation box 4 and the top surface and the bottom surface. The upward arc-shaped bend and the gap design help to guide the air to flow from the lower part to the upper part, utilizing the principle of natural convection and improving the air flow efficiency. The arc-shaped cold storage plate 33 can make the air form a vortex in the cold storage box 2, increasing the contact time between the air and the cold storage plate, thereby improving the cooling efficiency. The combined design of the arc-shaped cold storage plate 33 and the horizontal cold storage plate layer 32 helps to achieve a more uniform cooling effect and reduces the cooling dead angle.

[0055] As another specific embodiment, the first cooling assembly 5 includes an evaporator 51. The evaporator 51 is disposed outside the air inlet 41. A second air deflector 52 is provided outside the evaporator 51, and a second fan 53 is provided on the second air deflector 52. The evaporator 51 is located at the entrance of the cooling circulation box 4, and air first passes through the evaporator 51 before entering the cooling circulation box 4. The second air deflector 52 helps to guide the air flow and ensure that the air passes through the evaporator 51 evenly. The second fan 53 is used to enhance the air flow and improve the cooling efficiency. Integrating the evaporator 51, the second air deflector 52 and the second fan 53 together helps to reduce the space occupation, make the whole cooling assembly more compact, and can optimize the air flow path and speed, reduce energy loss, and improve the overall energy efficiency of the system. Optionally, the evaporator 51, the second air deflector 52 and the second fan 53 each include one and are jointly disposed outside the air inlet 41; the number of the evaporator 51, the second air deflector 52 and the second fan 53 can also be one less than the number of the horizontal air ducts, and they are distributively and correspondingly disposed outside the lower horizontal air ducts. Further, a water receiving tray is correspondingly disposed below the evaporator 51, and the water receiving tray is provided with a drain port communicated with a drain pipe to collect the condensed water generated by the evaporator 51.

[0056] As another specific embodiment, a second cooling assembly 7 is further provided in the outer box 6; a second heat dissipation assembly 10 disposed outside the cargo compartment 1 is further included, and the second heat dissipation assembly 10 is connected to the second cooling assembly 7; a supplementary cold door 8 that can be opened and closed is further provided on the outer box 6. When the cooling capacity released by the cold storage box 2 is insufficient to maintain the required low temperature, the second cooling assembly 7 can be started to supplement the cooling capacity through the supplementary cold door 8 to ensure that the temperature inside the cargo compartment is maintained within the specified range. The second cooling assembly 7 serves as a backup or auxiliary cooling means, increasing the reliability of the system. By controlling the opening and closing of the supplementary cold door 8, the cooling capacity can be flexibly adjusted to adapt to different cargo cooling requirements and ambient temperature changes. When additional cooling is not required, the supplementary cold door 8 and the second cooling assembly 7 can be closed to reduce energy consumption.

[0057] As another specific embodiment, the cold supplement door 8 is provided on the front side of the outer box body 6; alternatively, the cold supplement door 8 is provided on the rear side of the outer box body 6, and the cold supplement door 8 is connected to the air duct assembly 11. When the cold supplement door 8 is located on the front side, cold air can enter from the front and then be distributed to the entire space through the air flow inside the cargo compartment, which helps to quickly reduce the temperature inside the cargo compartment. When the cold supplement door 8 is located on the rear side of the outer box body 6 and is connected to the air duct assembly 11, the direction and speed of the air flow can be more effectively controlled through the air duct assembly 11. In this way, the cooling air can form a better circulation inside the cargo compartment, improving the cooling efficiency. Among them, when the cold supplement door 8 is provided on the front side of the outer box body 6, the internal structures of the second cooling assembly 7 and the first cooling assembly 5 are the same, and axial fans with direct current in one direction can be used for both, only the sizes are different. The second cooling assembly 7 is sequentially provided with an axial fan, a flow guide cover and an evaporator along the air flow direction at the cold supplement door 8. Further, when the cold supplement door 8 is provided on the rear side of the outer box body 6 and is connected to the air duct assembly 11, in order to ensure the flow effect, the air will have a 90° turn after passing through the cold supplement door 8, and the air is transferred parallel to the air duct assembly 11 after being turned 90°. The second cooling assembly 7 includes a centrifugal fan, a flow guide cover and an evaporator, and the evaporator, the flow guide cover and the centrifugal fan are sequentially provided along the air flow direction at the cold supplement door 8.

[0058] A cooling method for a dual-effect evaporation cold storage device includes the following steps:

[0059] S1. Air enters the cold storage box body 2; this stage is the starting point of the cooling process, and the air is guided into the cold storage box body 2 to prepare for the subsequent cooling process.

[0060] S2. Start the cold storage mode: close the cold release channel to ensure that the cold in the cold storage box body 2 will not be lost, and all the cooling energy is used to freeze the cold storage plate assembly 3. The air enters the cooling circulation box body 4 through the air inlet 41, is cooled by the first cooling assembly 5, and then enters the cold storage box body 2 through the air outlet 42 and circulates continuously, continuously freezing the cold storage plate assembly 3, as Figure 7 shown. The cold storage mode closes the cold release channel and forces the air to circulate in a closed loop between the cold storage box body 2 and the cooling circulation box body 4, avoiding external heat interference and unnecessary cooling of the external space, and improving the cold storage efficiency and cold storage intensity.

[0061] S3. When the temperature of the cold storage box body 2 reaches the required value, start the cold storage mode: isolate the cooling circulation box body 4 and the cold storage box body 2, and seal all the cold in the cold storage box body 2. The cold storage mode isolates the cooling circulation box body 4 and completely seals the cold inside the cold storage box body 2, reducing the cold loss caused by environmental temperature fluctuations.

[0062] S4. When it is necessary to cool the cargo compartment, activate the cold release mode: Open the cold release channel to allow air to enter the cold storage box body 2 through the cold release channel. The air enters the cold storage box body 2 through the cold release channel, is cooled after passing through the cold storage plate assembly 3, and then enters the cargo compartment 1 through the cold release channel to achieve cooling, as Figure 8 shown. The cold release mode directionally opens the cold release channel, and realizes the on-demand release of cold energy through the optimization of the air flow path, avoiding the risk of temperature runaway caused by traditional passive cold release.

[0063] Actively cool the circulating air multiple times to accelerate the freezing rate of the cold storage plate assembly 3, improve the cold storage density, and ensure the cold storage intensity, without considering the impact of excessive cold storage intensity on the items in the cargo compartment. In the cold release mode, the cold air is directionally introduced into the cargo compartment 1 through the cold release channel to form a forced convection cycle, avoiding the problem of local cold energy accumulation caused by traditional wall-mounted ice plates, improving the spatial temperature uniformity, and optimizing and improving the temperature field uniformity. The air cooling during vehicle driving or an additional heat dissipation device can be used to enhance the heat dissipation efficiency and reduce the energy consumption of the refrigeration system. The cold storage mode can seal the cold energy in the cold storage box body 2, reduce the loss of ineffective cold release, extend the cold energy maintenance time, and reduce the cold replenishment demand. It supports centralized cold charging during the low electricity price period or when the vehicle is stationary, and only relies on cold storage and cold release during the peak period, reducing the overall operation cost. The dynamic isolation design effectively blocks the thermal erosion of the external high-temperature and high-humidity environment on the cold storage box body 2 and improves the anti-interference ability.

[0064] As another specific implementation method, it includes the following steps:

[0065] S1. Open the cold release channel and the air inlet 61 of the outer box body 6. The air in the cargo compartment 1 enters the cold release channel through the first fan 22 and thus enters the cold storage box body 2;

[0066] Alternatively, when assembling the cold storage box body 2, let the outside air remain in the box body and keep it;

[0067] S2. Activate the cold storage mode: Only open the air inlet 41, the air outlet 42, the first cooling component 5 and the second fan 53, and adjust the vertical cold storage plate 31 to the left-right direction; The air enters the left or right cooling circulation box body 4 through the air outlet 42, is cooled by the first cooling component 5, and then enters the cold storage box body 2 from the air inlet 41 through the second fan 53; The air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer 32 from the air inlet 41, flows upward from one side of the far cooling circulation box body 4 to the uppermost horizontal air duct, and then enters the cooling circulation box body 4 from the air outlet 42 and circulates continuously, continuously freezing the cold storage plate assembly 3;

[0068] S3. When the temperature of the cold storage box body 2 reaches the required value, activate the cold storage mode: Close the air inlet 41, the air outlet 42, the first cooling component 5 and the second fan 53, isolate the cooling circulation box body 4 and the cold storage box body 2, and seal all the cold energy in the cold storage box body 2;

[0069] S4. When it is necessary to cool the cargo compartment, turn on the cold release mode: turn on the cold release door 23, the air intake door 61 and the first fan 22, and adjust the vertical cold storage plate 31 to the front-back direction; air enters the outer box 6 through the air intake door 61 on the side of the outer box 6, then enters the cold storage box 2 through the first fan 22, is cooled after passing through the cold storage plate assembly 3, and then enters the cargo compartment 1 through the cold release door 23 forward to achieve cooling; or enters the air duct assembly 11 through the cold release door 23 backward to cool the cargo compartment 1.

[0070] S5. When the cold release amount is insufficient, turn on the supplementary cooling mode: turn off the first fan 22 and the cold release door 23, and turn on the air intake door 61, the supplementary cold door 8 and the second cooling assembly 7; air enters the outer box 6 through the air intake door 61 on the side of the outer box 6, is cooled after passing through the second cooling assembly 7, and then enters the cargo compartment 1 through the supplementary cold door 8 forward to achieve cooling; or enters the air duct assembly 11 through the supplementary cold door 8 backward to cool the cargo compartment 1, as Figure 9 shown;

[0071] At the same time, turn on the cold storage mode: turn on the air inlet 41, the air outlet 42, the first cooling assembly 5 and the second fan 53, and adjust the vertical cold storage plate 31 to the left-right direction; air enters the left or right cooling circulation box 4 through the air outlet 42, is cooled by the first cooling assembly 5, and then enters the cold storage box 2 from the air inlet 41 through the second fan 53; air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer 32 from the air inlet 41, flows upward from one side of the far cooling circulation box 4 to the uppermost horizontal air duct, and then enters the cooling circulation box 4 from the air outlet 42 and circulates continuously, continuously freezing the cold storage plate assembly 3.

[0072] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature disclosed in this specification or any new combination, as well as any new method or process step disclosed or any new combination.

Claims

1. A double-effect evaporative cold storage device for a vehicle cargo compartment, characterized in that: The invention comprises a cold storage box (2) arranged in a cargo compartment (1), the cold storage box (2) being provided with a cold release channel which can be switched and communicated with the cold storage box (2), a cold storage plate assembly (3) being provided in the cold storage box (2), a cooling circulation box (4) being connected to the outside of the cold storage box (2), the cold storage box (2) and the cooling circulation box (4) being communicated with each other through a switchable air inlet (41) and an air outlet (42), and a first cooling assembly (5) being provided in the cooling circulation box (4); and further comprising a first heat dissipation assembly (9) arranged outside the cargo compartment (1), the first heat dissipation assembly (9) being connected to the first cooling assembly (5); An outer box (6) is provided on the outside of the cold storage box (2) and the cooling cycle box (4), and a switchable air inlet door (61) is provided on the left and / or right side of the outer box (6); the cold release channel is arranged along the front and rear; A first fan (22) is provided on the rear side of the cold release channel through a first air guide cover (21), and the first fan (22) is connected to the outer box (6) and the cold storage box (2); the cold release channel leads forward to the outer box (6), and a switchable cold release door (23) is provided on the front side of the cold release channel; Alternatively, a first fan (22) is provided on the front side of the cold release channel through a first air guide cover (21), and the first fan (22) is connected to the outer box (6) and the cold storage box (2); and further comprises an air duct assembly (11) arranged in the cargo room (1), the cold release channel leads rearward to the outer box (6), and the rear side of the cold release channel is connected to the air duct assembly (11) through a switchable cold release door (23); The cooling circulation box (4) is arranged on the left side or the right side of the cold storage box (2); the cold storage plate assembly (3) comprises a plurality of vertical cold storage plates (31), and the vertical cold storage plates (31) are arranged in the cold storage box (2) via a rotating shaft, and the rotating shaft is arranged in the up-down direction to drive the vertical cold storage plates (31) to switch in the left-right direction or the front-back direction.

2. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 1, characterized in that: The cold storage plate assembly (3) comprises at least one horizontal cold storage plate layer (32), the horizontal cold storage plate layers (32) being arranged at intervals in the up-down direction, dividing the cold storage box (2) into at least two horizontal air ducts, the horizontal air ducts being interconnected; the air outlet (42) being arranged on one side of the uppermost horizontal air duct; and the air inlet (41) being arranged on one side of the remaining horizontal air duct at the bottom.

3. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 2, characterized in that: The side of the horizontal cold storage plate layer (32) close to the cooling circulation box (4) contacts the cold storage box (2), and the side of the horizontal cold storage plate layer (32) far from the cooling circulation box (4) is connected to an upward arc-shaped bend, and a gap is provided between the side and the cold storage box (2); an arc-shaped cold storage plate (33) is provided between the side of the cold storage box (2) far from the cooling circulation box (4) and the top surface and the bottom surface.

4. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 1, characterized in that: The first cooling component (5) comprises an evaporator (51), the evaporator (51) is arranged on the outside of the air inlet (41), a second air guide cover (52) is arranged on the outside of the evaporator (51), and a second fan (53) is arranged on the second air guide cover (52).

5. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 1, characterized in that: The outer box (6) is also provided with a second cooling assembly (7); it also includes a second heat dissipation assembly (10) arranged outside the cargo room (1), the second heat dissipation assembly (10) being connected to the second cooling assembly (7); and the outer box (6) is also provided with a switchable cooling door (8).

6. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 5, characterized in that: The cooling door (8) is arranged on the front side of the outer box body (6); or, the cooling door (8) is arranged on the rear side of the outer box body (6), and the cooling door (8) is connected to the air duct assembly (11).

7. A cooling method for a double-effect evaporative cold storage device, used for the double-effect evaporative cold storage device for a vehicle cargo compartment as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, air enters the cold storage box (2); S2, start the cold storage mode: close the cold release channel, the air enters the cooling circulation box (4) through the air outlet (42), is cooled by the first cooling component (5), and then enters the cold storage box (2) through the air inlet (41), and circulates continuously to continuously freeze the cold storage plate component (3); S3. When the temperature of the cold storage box (2) reaches the required value, the cold storage mode is turned on: the cooling circulation box (4) and the cold storage box (2) are isolated, and all the cold energy is sealed in the cold storage box (2); S4. When the cargo compartment needs to be cooled, the cooling mode is turned on: the cooling channel is turned on, and air enters the cooling box (2) through the cooling channel, is cooled after passing through the cooling plate assembly (3), and then enters the cargo compartment (1) through the cooling channel to achieve cooling.

8. The cooling method of the double-effect evaporative cold storage device according to claim 7, characterized in that: The following steps are involved: S1, opening the cold release channel, opening the air inlet door (61) of the outer box (6), and allowing the air in the cargo room (1) to enter the cold release channel through the first fan (22), and then enter the cold storage box (2); Alternatively, when the cold storage box (2) is assembled, the outside air is retained in the box and preserved; S2, start the cold storage mode: only open the air inlet (41), the air outlet (42), the first cooling assembly (5) and the second fan (53), and adjust the vertical cold storage plate (31) to the left or right direction; the air enters the cooling circulation box (4) on the left or right side through the air outlet (42), is cooled by the first cooling assembly (5), and then enters the cold storage box (2) from the air inlet (41) through the second fan (53); the air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer (32) from the air inlet (41), and flows upward from the side far from the cooling circulation box (4) to the uppermost horizontal air duct, and then enters the cooling circulation box (4) from the air outlet (42), and circulates continuously to continuously freeze the cold storage plate assembly (3); S3. When the temperature of the cold storage box (2) reaches a required value, the cold storage mode is turned on: the air inlet (41), the air outlet (42), the first cooling assembly (5) and the second fan (53) are closed, the cooling cycle box (4) and the cold storage box (2) are isolated, and all the cold energy is sealed in the cold storage box (2); S4. When the cargo compartment needs to be cooled, the cooling mode is turned on: the cooling door (23), the air inlet door (61) and the first fan (22) are turned on, and the vertical cold storage plate (31) is adjusted to the front-to-back direction; the air enters the outer box (6) through the air inlet door (61) on the side of the outer box (6), and then enters the cold storage box (2) through the first fan (22), is cooled after passing through the cold storage plate assembly (3), and then enters the cargo compartment (1) forward through the cooling door (23) to achieve cooling; or enters the air duct assembly (11) backward through the cooling door (23) to achieve cooling of the cargo compartment (1); S5. When the cooling capacity is insufficient, the supplementary cooling mode is turned on: the first fan (22) and the cooling door (23) are turned off, and the air inlet door (61), the supplementary cooling door (8) and the second cooling assembly (7) are turned on; the air enters the outer box (6) through the air inlet door (61) on the side of the outer box (6), is cooled after passing through the second cooling assembly (7), and then enters the cargo room (1) through the supplementary cooling door (8) to achieve cooling; or enters the air duct assembly (11) through the supplementary cooling door (8) to achieve cooling of the cargo room (1); At the same time, the cold storage mode is turned on: the air inlet (41), the air outlet (42), the first cooling assembly (5) and the second fan (53) are turned on, and the vertical cold storage plate (31) is adjusted to the left or right direction; the air enters the cooling circulation box (4) on the left or right side through the air outlet (42), is cooled by the first cooling assembly (5), and then enters the cold storage box (2) from the air inlet (41) through the second fan (53); the air passes through the lower horizontal air duct divided by the horizontal cold storage plate layer (32) from the air inlet (41), and flows upward from the side far from the cooling circulation box (4) to the uppermost horizontal air duct, and then enters the cooling circulation box (4) from the air outlet (42), and circulates continuously to continuously freeze the cold storage plate assembly (3).

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