Double-effect evaporation cold storage device for vehicle cargo compartment and cooling method of double-effect evaporation cold storage device

Abstract

The invention discloses a double-effect evaporation cold storage device for a vehicle cargo compartment and a cooling method of the double-effect evaporation cold storage device. The cold storage device comprises a cold storage box body arranged in the cargo room, a cold release channel which can be opened and closed and is communicated with the interior of the cold storage box body is arranged on the cold storage box body, a cold storage plate assembly is arranged in the cold storage box body, and the outer side 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 which can be opened and closed, and a first cooling assembly is arranged in the cooling circulation box body; the first heat dissipation assembly is arranged outside the cargo room, and the first heat dissipation assembly is connected with the first cooling assembly. Through a multi-mode control strategy, split type air duct design and cooling capacity path directional optimization, whole-process refined management and control of storage, release, dynamic and cold supplement of the cooling capacity of the cold storage cargo chamber are achieved. The method has the advantages of temperature uniformity improvement, energy consumption reduction, space utilization rate optimization and environmental adaptability enhancement.

Description

Technical Field

[0001] The invention relates to the technical field of cooling devices for vehicle cargo compartments, and in particular to a double-effect evaporative cold storage device for vehicle cargo compartments 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. Existing technologies mostly adopt the design of laying phase-change cold storage ice plates directly on the inner wall of the cargo compartment, and use air coolers to force cold air to convect to the surface of the ice plates to achieve cold storage. When the cold storage device is running alone, it relies on the passive release of cold energy by the ice plates to maintain a low temperature environment in the box; when the cold storage capacity is insufficient, the steam compression refrigeration system needs to be started for supplementary cooling to ensure that the temperature meets national regulations. However, this type of technology still has the following significant defects in practical applications: 1. The existing cold storage ice plates are directly exposed to the interior of the cargo room, and their cold release rate is significantly affected by the temperature fluctuations of the external environment, and the temperature in the cargo room is uncontrollable. 2. The ice plates are concentrated on the walls of the cargo room, and their cold release process is prone to form local low-temperature areas. Areas far away from the ice plates may experience temperature stratification due to unreasonable airflow organization, resulting in poor temperature uniformity in the cargo room. 3. Ice plates are prone to frost when exposed to high humidity environments for a long time, which not only reduces their cold storage efficiency, but also increases the operating load of the air cooler. At the same time, the rigid fixing method of the ice plates and the cargo room structure leads to high maintenance or replacement costs, further limiting the universality and reliability of the technology. Summary of the invention

[0003] The object of the present invention is to provide a double-effect evaporative cold storage device and a cooling method for a vehicle cargo compartment in order to solve the above-mentioned problems, so as to improve the cooling efficiency and temperature uniformity.

[0004] The technical solution adopted by the present invention is as follows: A double-effect evaporative cold storage device for a vehicle cargo compartment comprises a cold storage box disposed in the cargo compartment, the cold storage box being provided with a switchable cold release channel connected to the cold storage box, the cold storage box being provided with a cold storage plate assembly, the outer side of the cold storage box being connected to a cooling circulation box, the cold storage box and the cooling circulation box being connected via a switchable air inlet and an air outlet, the cooling circulation box being provided with a first cooling assembly; and further comprising a first heat dissipation assembly disposed outside the cargo compartment, the first heat dissipation assembly being connected to the first cooling assembly.

[0005] Optionally, the outer sides of the cold storage box and the cooling cycle box are jointly provided with an outer box, and the left side and / or right side of the outer box are provided with a switchable air inlet door; the cold release channel is arranged along the front and back; A first fan is provided at the rear side of the cold release channel through a first air guide cover, and the first fan is connected to the outer box and the cold storage box; the cold release channel leads forward to the outer box, and a switchable cold release door is provided at the front side of the cold release channel; Alternatively, a first fan is provided on the front side of the cold release channel through a first air guide cover, and the first fan is connected to the outer box body and the cold storage box body; it also includes a duct assembly arranged in the cargo compartment, and the cold release channel leads rearward to the outer box body, and the rear side of the cold release channel is connected to the duct assembly through a switchable cold release door.

[0006] Optionally, the cooling circulation box is arranged on the left side or right side of the cold storage box; the cold storage plate assembly includes a plurality of vertical cold storage plates, and the vertical cold storage plates are arranged in the cold storage box through a rotating shaft, and the rotating shaft is arranged along the up and down direction to drive the vertical cold storage plates to switch in the left and right direction or the front and back direction.

[0007] Optionally, the cold storage plate assembly includes at least one horizontal cold storage plate layer, and the horizontal cold storage plate layers are spaced apart in the up and down directions to divide the cold storage box into at least two horizontal air ducts, and the horizontal air ducts are interconnected; the air outlet is arranged on one side of the topmost horizontal air duct; and the air inlet is arranged on one side of the remaining horizontal air duct at the bottom.

[0008] Optionally, one side of the horizontal cold storage plate layer close to the cooling circulation box is in contact with the cold storage box, and one side of the horizontal cold storage plate layer far from the cooling circulation box is connected with an upward arc bend, and there is a gap between this side and the cold storage box; an arc-shaped cold storage plate is provided between the side of the cold storage box far from the cooling circulation box and the top and bottom surfaces.

[0009] Optionally, the first cooling component includes an evaporator, the evaporator is arranged on the outside of the air inlet, a second air guide cover is provided on the outside of the evaporator, and a second fan is provided on the second air guide cover.

[0010] Optionally, the outer box body is further provided with a second cooling component; it also includes a second heat dissipation component arranged outside the cargo room, the second heat dissipation component is connected to the second cooling component; the outer box body is also provided with a switchable cooling door.

[0011] Optionally, the cooling door is arranged on the front side of the outer box body; or, the cooling door is arranged on the rear side of the outer box body, and the cooling door is connected to the air duct assembly.

[0012] A cooling method for a double-effect evaporative cold storage device comprises the following steps: S1, air enters the cold storage box; S2, start the cold storage mode: close the cold release channel, the air enters the cooling circulation box through the air inlet, is cooled by the first cooling component, and then enters the cold storage box through the air outlet, and circulates continuously to continuously freeze the cold storage plate component; S3. When the temperature of the cold storage box reaches the required value, the cold storage mode is turned on: the cooling cycle box and the cold storage box are isolated, and all the cold energy is sealed in the cold storage box; S4. When the cargo room needs to be cooled, the cooling mode is turned on: the cooling channel is turned on, and the air enters the cold storage box through the cooling channel, is cooled after passing through the cold storage plate assembly, and then enters the cargo room through the cooling channel to achieve cooling.

[0013] The following steps are involved: S1, opening the cold release channel, opening the air inlet door of the outer box, and the air in the cargo room enters the cold release channel through the first fan, and then enters the cold storage box; Alternatively, when the cold storage box is assembled, the outside air is retained in the box and preserved; S2, start the cold storage mode: only open the air inlet, air outlet, first cooling assembly and second fan, and adjust the vertical cold storage plate to the left or right direction; air enters the cooling circulation box on the left or right side through the air outlet, is cooled by the first cooling assembly, 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, and flows upward from the side far from the cooling circulation box to the uppermost horizontal air duct, and then enters the cooling circulation box from the air outlet, and circulates continuously to continuously freeze the cold storage plate assembly; S3. When the temperature of the cold storage box reaches the required value, the cold storage mode is turned on: the air inlet, the air outlet, the first cooling assembly and the second fan are closed, the cooling cycle box and the cold storage box are isolated, and all the cold energy is sealed in the cold storage box; S4. When the cargo compartment needs to be cooled, the cooling mode is turned on: the cooling door, the air inlet door and the first fan are turned on, and the vertical cold storage plate is adjusted to the front-to-back direction; air enters the outer box through the air inlet door on the side of the outer box, and then enters the cold storage box through the first fan, is cooled after passing through the cold storage plate assembly, and then enters the cargo compartment through the cooling door to achieve cooling; or enters the air duct assembly through the cooling door to achieve cooling of the cargo compartment; S5. When the cooling capacity is insufficient, the supplementary cooling mode is turned on: the first fan and the cooling door are turned off, and the air inlet door, the supplementary cooling door and the second cooling assembly are turned on; the 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 assembly, and then enters the cargo room through the supplementary cooling door to achieve cooling; or enters the air duct assembly through the supplementary cooling door to achieve cooling of the cargo room; At the same time, the cold storage mode is turned on: the air inlet, air outlet, first cooling assembly and second fan are turned on, and the vertical cold storage plate is adjusted to the left or right direction; the air enters the cooling circulation box on the left or right side through the air outlet, is cooled by the first cooling assembly, and then enters the cold storage box from the air inlet through the second fan; the air passes from the air inlet through the lower horizontal air duct divided by the horizontal cold storage plate layer, and flows upward from the side far from the cooling circulation box to the top horizontal air duct, and then enters the cooling circulation box from the air outlet, and circulates continuously to continuously freeze the cold storage plate assembly.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The double-effect evaporative cold storage device and cooling method for a vehicle cargo compartment provided by the present invention realizes the refined management and control of the entire process of cold storage, release, dynamics and cold replenishment in the cold storage cargo compartment through multi-modal control strategy, split air duct design and directional optimization of cold path. Its advantages are concentrated on 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 long-distance cold chain transportation of temperature-sensitive goods in vehicle mobile scenarios, providing a high-reliability, low-energy consumption solution for vehicle mobile cold chain scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 The present invention is a front view of the installation of a double-effect evaporative cold storage device for a vehicle cargo compartment.

[0016] Figure 2 A top view of the installation of a double-effect evaporative cold storage device for a vehicle cargo compartment Figure 1 .

[0017] Figure 3 A top view of the installation of a double-effect evaporative cold storage device for a vehicle cargo compartment Figure 2 .

[0018] Figure 4 yes Figure 1 Enlarged view of point A.

[0019] Figure 5 yes Figure 2 Enlarged view of point B.

[0020] Figure 6 yes Figure 3 Enlarged view of point C.

[0021] Figure 7 It is a schematic diagram of air flow in cold storage mode.

[0022] Figure 8This is a schematic diagram of air flow in cooling mode.

[0023] Fig. 9 It is a schematic diagram of air flow in supplementary cooling mode.

[0024] Markings in the figure: 1-cargo room, 11-air duct assembly, 2-cold storage box, 21-first air guide cover, 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 cold storage plate, 4-cooling cycle box, 41-air inlet, 42-air outlet, 5-first cooling assembly, 51-evaporator, 52-second air guide cover, 53-second fan, 6-outer box, 61-air inlet door, 7-second cooling assembly, 8-cold supply door, 9-first heat dissipation assembly, 10-second heat dissipation assembly. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0028] A double-effect evaporative cold storage device for a vehicle cargo compartment, such as Figure 1-Figure 6 As shown, it includes a cold storage box 2 arranged in the cargo room 1, the cold storage box 2 is provided with a switchable cold release channel connected to the cold storage box 2, a cold storage plate assembly 3 is arranged in the cold storage box 2, the outer side of the cold storage box 2 is connected to a cooling cycle box 4, the cold storage box 2 and the cooling cycle box 4 are connected through a switchable air inlet 41 and an air outlet 42, and a first cooling assembly 5 is arranged in the cooling cycle box 4; it also includes a first heat dissipation assembly 9 arranged outside the cargo room 1, and the first heat dissipation assembly 9 is connected to the first cooling assembly 5.

[0029] The physical isolation of the three stages of cold storage, cold storage and cold release is achieved through the switchable cold release channel and the inlet / outlet 42. The cold storage mode closes the cold release channel, and forces the air to circulate in a closed loop between the cold storage box 2 and the cooling cycle box 4, avoiding external thermal interference and unnecessary cooling of the external space, thereby improving the cold storage efficiency and cold storage intensity; the cold storage mode isolates the cooling cycle box 4, and completely seals the cold inside the cold storage box 2, reducing the cold loss caused by ambient temperature fluctuations; the cold release mode opens the cold release channel in a directional manner, and realizes the on-demand release of cold through airflow path optimization, avoiding the risk of temperature out of control caused by traditional passive cold release. Preferably, temperature sensors are provided in the cargo room 1 and the cold storage box 2, and the temperature sensors are connected to a logic control unit. The switchable and rotatable components mentioned in this solution (such as multiple doors, fans and cooling components) are all connected to control devices, which can switch modes in real time and adjust the air outlet opening to ensure that the temperature inside the box is stable within the set threshold, significantly reducing the start and stop frequency of the standby refrigeration system. The cold storage box 2 and the cooling cycle box 4 are designed separately. The first cooling component 5 actively cools the circulating air multiple times, accelerates the freezing rate of the cold storage plate component 3, improves the cold storage density, and ensures the cold storage strength, without considering the impact of excessive cold storage strength on the items in the cargo room. In the cold release mode, the cold air is directed into the cargo room 1 through the cold release channel to form a forced convection cycle, avoid the problem of local cold accumulation caused by traditional wall-mounted ice plates, improve the uniformity of spatial temperature, and optimize and improve the uniformity of the temperature field. The first heat dissipation component 9 forms a thermal cycle with the first cooling component 5, and the air cooling or additional heat dissipation device during vehicle driving 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 in the cold storage box 2, reduce the loss of ineffective cold release, extend the cold maintenance time, and reduce the demand for supplementary cold. It supports centralized cold charging during the low electricity price period or when the vehicle is stationary, and only relies on cold storage to release cold during peak hours, reducing the overall operating cost. The dynamic isolation design effectively blocks the thermal erosion of the cold storage box 2 by the external high temperature and high humidity environment, and improves the anti-interference ability. The cooling cycle box 4 is separated from the cold storage box 2 to reduce the risk of ice plate frost, and the split structure is convenient for modular maintenance and replacement.

[0030] As another specific embodiment, the outer sides of the cold storage box 2 and the cooling cycle box 4 are jointly provided with an outer box 6, 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 back; The rear side of the cold release channel is provided with a first fan 22 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 the front side of the cold release channel is provided with a switchable cold release door 23; 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 connects the outer box body 6 and the cold storage box body 2; it also includes a duct assembly 11 arranged in the cargo room 1, and the cold release channel extends rearward to the outer box body 6, and the rear side of the cold release channel is connected to the duct assembly 11 through a switchable cold release door 23.

[0031] When the cold storage box 2 and the cooling cycle box 4 are arranged in the cargo room, in order to prevent interference with the assembly of the goods, it is preferably installed on the side of the cargo room. The outer box 6 is designed to allow air to enter from the side and release cold in the front and rear directions, allowing external air to enter the outer box 6, and then guided to the cold storage box 2 by the fan, so that the cold air can flow smoothly inside the cargo room, reducing the resistance of air flow, forming an effective air convection cycle, and helping to improve the cooling efficiency. The combination of the fan and the air guide cover can enhance the power of air flow, make the air flow more orderly, and improve the cooling efficiency. The cold release door 23 can be opened or closed as needed, accurately controlling the release of the cold air flow, optimizing the air flow path, and improving the cooling efficiency. Optionally, the cold release door 23 is a cold release shutter. The air duct assembly 11 can guide the air flow so that the cooling air can be more effectively distributed to every corner of the cargo room, improving the uniformity and efficiency of cooling. Furthermore, the air duct is soft, heat-insulating and shrinkable. Therefore, the air duct is arranged in the interlayer at the top of the cargo room, and multiple small holes are opened under the interlayer. One-way jet holes are installed in the small holes to blow the cooling air vertically into the cold storage through the air duct for circulation, thereby reducing the temperature in the cold storage. The one-way jet hole designed in this scheme is to install a circular blade similar to a one-way valve at the position of the small hole to prevent the cold air from entering from the jet hole during the circulation process in the cooling mode, causing the loss of cooling capacity and gas flow.

[0032] As another specific embodiment, the cooling cycle box 4 is arranged on the left or right side of the cold storage box 2; the cold storage plate assembly 3 includes a plurality of vertical cold storage plates 31, and the vertical cold storage plates 31 are arranged in the cold storage box 2 through a rotating shaft, and the rotating shaft is arranged in the up and down direction, driving the vertical cold storage plates 31 to switch in the left and right direction or the front and back direction. The air between the cooling cycle box 4 and the cold storage box 2 flows in the left and right direction, which can prevent the cooling cycle airflow from directly interfering with the airflow of the cold release channel, thereby avoiding the formation of airflow short circuit or vortex, and 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 room more compact. The vertical cold storage plate 31 switches in the left and right direction or the front and back direction to switch between the cold storage and cold release modes, which improves the flexibility and ease of operation of the system, and forces the cold storage airflow 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, increase the contact area with the air, improve the cooling of the cold storage plate by the air when storing cold, and improve the cooling of the cold storage plate by the air when releasing cold. It should be noted that the rotating shaft includes multiple, and each of the rotating shafts is sequentially provided with multiple vertical cold storage plates 31 in the up and down directions. There is an upper and lower gap between the vertical cold storage plates 31 arranged on the same rotating shaft, so that a horizontal cold storage plate is arranged in the gap to prevent motion interference between the vertical cold storage plate 31 and the horizontal cold storage plate.

[0033] As another specific embodiment, the cold storage plate assembly 3 includes at least one horizontal cold storage plate layer 32, and the horizontal cold storage plate layer 32 is arranged at intervals in the vertical direction to divide the cold storage box 2 into at least two horizontal air ducts, and the horizontal air ducts are interconnected; 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 duct at the bottom. The horizontal cold storage plate layer 32 is arranged at intervals in the vertical direction to divide the cold storage box 2 into at least two horizontal air ducts, and the horizontal air ducts are interconnected to form a continuous air flow path. The air enters the cooling cycle box 4 from the air inlet 41, is cooled by the first cooling assembly 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 layer 32 to cool it. The air eventually re-enters the cooling cycle box 4 from the top horizontal air duct through the air outlet 42 to form a closed loop. 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 circulation of cooling air in the cold storage box 2 can distribute the cold more evenly and reduce cooling dead corners. Since the air forms a closed loop in the cold storage box 2, the cold storage plate assembly 3 can be evenly cooled, avoiding the problem of local overcooling or overheating. The air flows upward from the lower horizontal air duct, utilizing the principle of rising hot air, which helps natural convection and further optimizes the cooling effect. Through the continuous operation of the closed loop, the cold storage plate assembly 3 can be continuously frozen to maintain the low temperature environment in the cold storage box 2. Usually, the internal box temperature of the cold storage box 2 is ≤-18°C. Among them, each horizontal cold storage plate layer 32 can be composed of multiple horizontal cold storage plates, or it can be in the form of a single horizontal cold storage plate.

[0034] As another specific embodiment, the 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 the side of the horizontal cold storage plate layer 32 far from the cooling circulation box 4 is connected with an upward arc bend, 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 and bottom surfaces. The upward arc bend and gap design help guide the air to flow from the bottom to the top, utilizing the principle of natural convection to improve the air flow efficiency. The arc-shaped cold storage plate 33 can make the air form a vortex in the cold storage box 2, increase the contact time between the air and the cold storage plate, and thus improve 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 reduce cooling dead corners.

[0035] As another specific embodiment, the first cooling assembly 5 includes an evaporator 51, the evaporator 51 is arranged on the outside of the air inlet 41, the outside of the evaporator 51 is provided with a second air guide hood 52, and the second air guide hood 52 is provided with a second fan 53. The evaporator 51 is located at the entrance of the cooling cycle box 4, and the air first passes through the evaporator 51 before entering the cooling cycle box 4. The second air guide hood 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 guide hood 52 and the second fan 53 together helps to reduce space occupancy, make the entire cooling assembly more compact, and 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 guide cover 52 and the second fan 53 each include one, and are disposed together on the outside of the air inlet 41; the number of the evaporator 51, the second air guide cover 52 and the second fan 53 may also be one less than the number of the horizontal air ducts, and they are correspondingly disposed on the outside of the lower horizontal air duct. Furthermore, a water receiving pan is correspondingly disposed below the evaporator 51, and the water receiving pan is provided with a drain port connected to a drain pipe to collect condensed water generated by the evaporator 51.

[0036] As another specific embodiment, a second cooling component 7 is further provided in the outer box body 6; it also includes a second heat dissipation component 10 arranged outside the cargo room 1, and the second heat dissipation component 10 is connected to the second cooling component 7; the outer box body 6 is also provided with a switchable cold supplement door 8. When the cold release capacity of the cold storage box 2 is insufficient to maintain the required low temperature, the second cooling component 7 can be started, and the cooling capacity can be supplemented by the cold supplement door 8 to ensure that the temperature inside the cargo room is maintained within the specified range. The second cooling component 7 serves as a backup or auxiliary cooling means, which increases the reliability of the system. By controlling the switch of the cold supplement 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 cold supplement door 8 and the second cooling component 7 can be closed to reduce energy consumption.

[0037] As another specific embodiment, the supplementary cold door 8 is arranged on the front side of the outer box body 6; or, the supplementary cold door 8 is arranged on the rear side of the outer box body 6, and the supplementary cold door 8 is connected to the duct assembly 11. When the supplementary cold 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 supplementary cold door 8 is located on the rear side of the outer box body 6 and connected to the duct assembly 11, the direction and speed of air flow can be more effectively controlled by the duct assembly 11. This method can make the cooling air form a better circulation inside the cargo compartment and improve the cooling efficiency. Among them, when the supplementary cold door 8 is arranged on the front side of the outer box body 6, the internal structure of the second cooling assembly 7 is consistent with that of the first cooling assembly 5, and the fan can use an axial flow fan with direct current in the direction, only the size is different, and the second cooling assembly 7 is sequentially provided with an axial flow fan, a guide cover and an evaporator at the supplementary cold door 8 along the air flow direction. Furthermore, when the supplementary cooling door 8 is disposed at the rear side of the outer box 6 and connected to the duct assembly 11, in order to ensure the flow effect, the air will be turned 90° after passing through the supplementary cooling door 8, and the air will be turned 90° and then transmitted in parallel to the duct assembly 11. The second cooling assembly 7 includes a centrifugal fan, a shroud and an evaporator, and the evaporator, the shroud and the centrifugal fan are sequentially arranged at the supplementary cooling door 8 along the air flow direction.

[0038] A cooling method for a double-effect evaporative cold storage device comprises the following steps: S1, air enters the cold storage box 2; this stage is the starting point of the cooling process, and the air is guided into the cold storage box 2 to prepare for the subsequent cooling process.

[0039] S2, start the cold storage mode: close the cold release channel to ensure that the cold in the cold storage box 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 4 through the air inlet 41, is cooled by the first cooling assembly 5, and then enters the cold storage box 2 through the air outlet 42, and circulates continuously to continuously freeze the cold storage plate assembly 3. Figure 7 The cold storage mode closes the cold release channel and forces the air to circulate in a closed loop between the cold storage box 2 and the cooling cycle box 4, avoiding external heat interference and unnecessary cooling of the external space, thereby improving the cold storage efficiency and cold storage strength.

[0040] S3. When the temperature of the cold storage box 2 reaches the required value, the cold storage mode is turned on: 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. The cold storage mode isolates the cooling cycle box 4 and completely seals the cold energy inside the cold storage box 2, reducing the cold energy loss caused by ambient temperature fluctuations.

[0041] S4. When the cargo compartment needs to be cooled, the cooling mode is turned on: the cooling channel is turned on to allow air to enter the cold storage box 2 through the cooling channel. The air enters the cold storage box 2 through the cooling channel, is cooled after passing through the cold storage plate assembly 3, and then enters the cargo compartment 1 through the cooling channel to achieve cooling. Figure 8 The cooling mode opens the cooling channel in a directional manner and optimizes the airflow path to achieve on-demand cooling, avoiding the risk of temperature out of control caused by traditional passive cooling.

[0042] Actively cool the circulating air multiple times to accelerate the freezing rate of the cold storage plate assembly 3, increase the cold storage density, and ensure the cold storage strength without considering the impact of excessive cold storage strength on the items in the cargo room. In the cold release mode, the cold air is directed into the cargo room 1 through the cold release channel to form a forced convection cycle, avoiding the problem of local cold accumulation caused by traditional wall-mounted ice plates, improving the uniformity of spatial temperature, and optimizing and improving the uniformity of the temperature field. The air cooling or additional heat dissipation device during vehicle driving 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 in the cold storage box 2, reduce the ineffective cold release loss, extend the cold maintenance time, and reduce the need for supplementary cold. It supports centralized cold charging during the low electricity price period or when the vehicle is stationary, and only relies on cold storage to release cold during peak hours, reducing the overall operating cost. The dynamic isolation design effectively blocks the thermal erosion of the cold storage box 2 by the external high temperature and high humidity environment, and improves the anti-interference ability.

[0043] As another specific implementation, the method comprises the following steps: S1, opening the cold release channel, opening the air inlet door 61 of the outer box 6, and the air in the cargo room 1 enters the cold release channel through the first fan 22, and then enters the cold storage box 2; Alternatively, when the cold storage box 2 is assembled, the outside air is retained in the box and retained; 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 the 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 through the cooling door 23 to achieve cooling; or enters the air duct assembly 11 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, such as Fig. 9 As shown; 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 from the air inlet 41 through the lower horizontal air duct divided by the horizontal cold storage plate layer 32, 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.

[0044] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

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), a first cooling assembly (5) being provided in the cooling circulation box (4); and a first heat dissipation assembly (9) being arranged outside the cargo compartment (1), the first heat dissipation assembly (9) being connected to the first cooling assembly (5).

2. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 1, characterized in that: 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 it also includes an air duct assembly (11) arranged in the cargo room (1), and 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).

3. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 2, characterized in that: 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.

4. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 2, 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.

5. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 4, 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.

6. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 2, 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).

7. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 2, 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).

8. The double-effect evaporative cold storage device for a vehicle cargo compartment according to claim 7, 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).

9. 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 8, 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, and the air enters the cooling circulation box (4) through 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), 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.

10. The cooling method of the double-effect evaporative cold storage device according to claim 9, 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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