Dry ice cooling energy quick release auxiliary cooling device in refrigerated trucks

Abstract

The present invention relates to a dry ice cooling device for rapidly releasing cold energy in a refrigerated truck. The device comprises an air intake assembly, a tray assembly, a suspension pipe, and an anti-escape mechanism. The air intake assembly comprises an air intake duct and a fan, with the air intake duct having an air intake end and an air outlet end. The tray assembly comprises a tray seat and a tray for placing granular dry ice. The tray seat is connected to the air outlet end of the air intake duct and is used to support the tray. The bottom of the tray has a mesh structure. The suspension pipe is a length-adjustable structure with an inlet end and an outlet end. The inlet end of the suspension pipe is connected to the tray seat. The anti-escape mechanism is connected to the outlet end of the suspension pipe and comprises an anti-escape body having an umbrella-shaped structure. The fan is configured to provide an airflow to the air intake end, which passes through the air intake duct and the tray seat in sequence. The airflow is used to blow the granular dry ice in the tray from the bottom of the tray and deliver the granular dry ice into the suspension pipe. The anti-escape body is used to prevent the granular dry ice from escaping.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain logistics, and in particular to a dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated truck. Background Art

[0002] Existing cold chain operation regulations have strict limits on the entry temperature of refrigerated trucks. To ensure the refrigeration or freezing of goods, empty refrigerated trucks need to be pre-cooled before the goods enter the warehouse. The current cold chain transportation system is subject to the dual constraints of the on-board refrigeration system power and the ambient temperature. In high temperature environments, the cooling efficiency of the on-board refrigeration system decreases, resulting in longer pre-cooling time, which in turn lengthens the logistics chain cycle, reduces logistics efficiency, and is not conducive to maintaining the freshness and quality of goods such as food and medicine. On the other hand, the extended pre-cooling time also leads to excessive fuel consumption on the vehicle, resulting in more frequent refueling of the vehicle and increased stop time during transportation, which further lengthens the logistics chain cycle and reduces material efficiency. Excessive fuel consumption means inefficient energy utilization, resulting in waste of resources, increased carbon emissions, and exacerbated environmental pollution, which is not in line with the development trend of green logistics.

[0003] Therefore, how to effectively shorten the pre-cooling time of empty refrigerated trucks, improve logistics efficiency, and optimize energy utilization efficiency has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The purpose of the present invention is to provide a dry ice cooling device for quickly releasing cold energy in a refrigerated truck. The technical problem it solves is how to effectively shorten the pre-cooling time of an empty refrigerated truck, improve logistics efficiency, and optimize energy utilization efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0006] On the one hand, the present invention provides a dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated truck, comprising: an air intake assembly, comprising an air intake duct and a fan, wherein the two ends of the air intake duct are respectively an air intake end and an air outlet end; a tray assembly, comprising a tray seat and a tray for placing granular dry ice, the tray seat is connected to the air outlet end of the air intake duct and is used to support the tray, and the bottom of the tray is a mesh structure; a suspension pipe is a length-adjustable structure, wherein the two ends of the suspension pipe are respectively an inlet end and an outlet end, and the inlet end of the suspension pipe is connected to the tray seat; an anti-escape mechanism is connected to the outlet end of the suspension pipe, and the anti-escape mechanism includes an anti-escape body with an umbrella-shaped structure; wherein the fan is configured to provide an airflow to the air intake end of the air intake duct, which passes through the air intake duct and the tray seat in sequence, wherein the airflow is used to blow the granular dry ice in the tray from the bottom of the tray and send the granular dry ice into the suspension pipe, and the anti-escape body is used to prevent the granular dry ice from escaping.

[0007] In some embodiments of the present application, the dry ice cold energy quick release auxiliary cooling device in the refrigerated truck also includes a slewing bearing, the slewing bearing includes an inner ring and an outer ring rotatably mounted outside the inner ring, the inner ring is fixedly connected to the air outlet end of the air intake duct, and the outer ring is fixedly connected to the tray seat so that the tray seat can be rotatably arranged on the air intake duct.

[0008] In some embodiments of the present application, the suspension tube includes an inner tube, an outer tube and a positioning member. The outer tube can be slidably mounted outside the inner tube and is provided with a plurality of positioning holes spaced apart along its length. The positioning member is connected to the inner tube and can be inserted and matched with different positioning holes when the inner tube extends outward or retracts inward relative to the outer tube, so as to lock the inner tube in different positions relative to the outer tube.

[0009] In some embodiments of the present application, the positioning hole passes through the inner wall and the outer wall of the outer tube; the positioning member includes an elastic member and a cylindrical pin, and the two ends of the elastic member are respectively connected to the outer wall of the inner tube and the cylindrical pin, and are used to provide an elastic force to drive the cylindrical pin; when it is necessary to fix the length of the suspension tube, the cylindrical pin and the positioning hole are at the same horizontal axis position, and are driven by the elastic force of the elastic member to extend axially into the positioning hole to lock the inner tube and the outer tube relative to each other; when it is necessary to adjust the length of the suspension tube, the cylindrical pin is acted upon by the force outside the outer tube, compresses the elastic member, and causes the cylindrical pin to disengage from the positioning hole to unlock the inner tube and the outer tube.

[0010] In some embodiments of the present application, the tray seat is a hollow tubular structure, the inner wall of the tray seat is provided with an annular receiving groove along its circumference, and the tray seat is provided with a clearance opening connected to the outside and the receiving groove respectively. The tray enters the receiving groove through the clearance opening, and its bottom is pressed against the groove wall of the receiving groove.

[0011] In some embodiments of the present application, the anti-escape mechanism further includes a pipe fitting, the two ends of which are respectively connected to the outlet end of the suspension tube and the flared end of the anti-escape body with an umbrella-shaped structure, and the pipe fitting is provided with a gas release hole running through its peripheral wall.

[0012] In some embodiments of the present application, the air intake duct includes a horizontal pipe portion and a vertical pipe portion, one end of the horizontal pipe portion is connected to one end of the vertical pipe portion, and the other end of the horizontal pipe portion is the air intake end, and the other end of the vertical pipe portion is the air outlet end; the vertical pipe portion, the tray seat, the suspension pipe and the anti-escape mechanism are arranged in sequence from bottom to top, and are all arranged vertically.

[0013] In some embodiments of the present application, the dry ice cold energy quick release auxiliary cooling device in the refrigerated truck also includes a fixing assembly, the fixing assembly includes a bracket, a clamp and a connector for connecting the bracket and the clamp, the clamp is engaged with the outside of the vertical tube portion and keeps the horizontal tube portion in a horizontal state, and the vertical tube portion, the pallet seat, the suspension tube and the anti-escape mechanism remain in a vertical state.

[0014] In some embodiments of the present application, the bracket includes a plurality of support rods arranged around the outer circumference of the vertical tube portion, and a gap is provided between two adjacent support rods in a group for the horizontal tube portion to extend out of the bracket; the clamp is provided with connecting ears, and the number of the connecting ears is the same as the number of the support rods, and each connecting ear is arranged at intervals along the circumference of the clamp and corresponds one-to-one to each support rod; the connecting member includes the same number of fastening bolts as the support rods, and each fastening bolt corresponds one-to-one to each support rod and each connecting ear, and the fastening bolt is used to pass through and lock the connecting ear and the support rod.

[0015] On the other hand, the present invention also provides a refrigerated truck, which includes a truck compartment and the dry ice quick-release auxiliary cooling device in the refrigerated truck in the above-mentioned embodiments, wherein the dry ice quick-release auxiliary cooling device in the refrigerated truck is fixed in the truck compartment.

[0016] It can be seen from the above technical solutions that the embodiments of the present invention have at least the following advantages and positive effects:

[0017] In the dry ice cold energy rapid release auxiliary cooling device in a refrigerated truck according to an embodiment of the present invention, granular dry ice is evenly placed on a tray, and the selection of granular shapes can increase the specific surface area of dry ice per unit mass. After the fan is started, the airflow first enters the air intake duct from the air inlet end, then flows out through the air outlet end and enters the tray seat. The airflow passes through the mesh holes of the mesh structure and contacts the granular dry ice in the tray, blowing up the granular dry ice to accelerate the air flow rate on the surface of the granular dry ice while preventing the granular dry ice, which gradually decreases in volume during the sublimation process, from falling through the mesh holes due to gravity. Subsequently, the airflow drives the granular dry ice through the other end of the holding tank, enters from the inlet end and is suspended in the suspension tube to promote the full sublimation of the granular dry ice under the action of continuous airflow. Since the suspension tube is a length-adjustable structure, the length of the suspension tube can be adjusted according to the airflow speed, and the anti-escape body is used to prevent the escape of insufficiently sublimated granular dry ice from the outlet. On the one hand, such a configuration can further promote the full sublimation of the granular dry ice. On the other hand, it can reduce the possibility of accidents caused by slippery ground caused by the escape of granular dry ice due to excessive airflow speed, thereby improving safety.

[0018] The auxiliary refrigeration device for rapid release of cold energy of dry ice in the refrigerated truck accelerates the air flow rate on the surface of granular dry ice with a larger specific surface area, improves the sublimation efficiency of dry ice, promotes rapid release of cold energy of dry ice, and enables the granular dry ice to fully sublime therein, thereby improving the refrigeration efficiency. As an auxiliary pre-cooling device in the pre-cooling stage of the refrigerated truck, it can greatly save pre-cooling time, shorten the cycle of the logistics chain, improve logistics efficiency, and reduce vehicle fuel consumption, thereby optimizing energy utilization efficiency. In addition, the sublimation of dry ice does not produce substances that are harmful to the environment, can reduce carbon emissions, and has the properties of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The various objects, features, and advantages of the present invention will become more apparent upon consideration of the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely illustrative illustrations of the present invention and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout.

[0020] Figure 1 The figure is a schematic structural diagram of a dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated truck according to an exemplary embodiment.

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the fixed components.

[0022] Figure 3 yes Figure 2 Schematic diagram of the overall structure when the suspension tube is in the extended state.

[0023] Figure 4 yes Figure 2 sectional view of .

[0024] Figure 5 yes Figure 4 A magnified schematic diagram of area A in the middle.

[0025] Figure 6 yes Figure 2 Schematic diagram of the decomposition structure.

[0026] Figure 7 yes Figure 2 Schematic diagram of the exploded structure of the pallet holder and pallet.

[0027] Figure 8 yes Figure 1 Schematic diagram of the structure of the fixed components.

[0028] Figure 9 FIG2 is a schematic structural diagram of a refrigerated truck according to an exemplary embodiment.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Air intake assembly; 11. Air intake duct; 111. Horizontal pipe; 1111. Air intake end; 112. Vertical pipe; 1121. Air outlet end; 12. Fan;

[0031] 2. Tray assembly; 21. Tray seat; 211. Receiving slot; 212. Yield opening; 22. Tray;

[0032] 3. Suspension tube; 31. Inner tube; 311. Inlet; 32. Outer tube; 321. Outlet; 322. Positioning hole; 33. Positioning member; 331. Elastic member; 332. Cylindrical pin;

[0033] 4. Anti-escape mechanism; 41. Anti-escape body; 411. Flared end; 42. Pipe fitting; 421. Gas release hole;

[0034] 5. Slewing bearing; 51. Inner ring; 52. Outer ring;

[0035] 6. Carriage; 61. Floor;

[0036] 7. Fixing assembly; 71. Bracket; 711. Support rod; 712. Gap; 72. Clamp; 721. Half clamp; 722. Connecting ear; 73. Connector; 731. Fastening bolt. DETAILED DESCRIPTION

[0037] Although the present invention is susceptible of being embodied in different forms, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to that described herein.

[0038] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than to imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise noted, the described combinations are not intended to be limiting.

[0039] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, these directional indications will also change accordingly.

[0040] See also Figures 1 to 4 An embodiment of the present invention provides a dry ice cooling energy rapid release auxiliary cooling device in a refrigerated vehicle, comprising an air intake assembly 1, a tray assembly 2, a suspension pipe 3, and an anti-escape mechanism 4. The air intake assembly 1 comprises an air intake duct 11 and a fan 12. The two ends of the air intake duct 11 are an air intake end 1111 and an air outlet end 1121, respectively. The tray assembly 2 comprises a tray seat 21 and a tray 22 for placing granular dry ice. The tray seat 21 is connected to the air outlet end 1121 of the air intake duct 11 and is used to support the tray 22. The bottom of the tray 22 is a mesh structure. The suspension pipe 3 is a length-adjustable structure, and its two ends are an inlet end 311 and an outlet end 321, respectively. The inlet end 311 of the suspension pipe 3 is connected to the tray seat 21. The anti-escape mechanism 4 is connected to the outlet end 321 of the suspension pipe 3. The anti-escape mechanism 4 comprises an anti-escape body 41 with an umbrella-shaped structure. Among them, the fan 12 is configured to provide an airflow to the air inlet end 1111 of the air inlet duct 11, which passes through the air inlet duct 11 and the tray seat 21 in sequence. The airflow is used to blow up the granular dry ice in the tray 22 from the bottom of the tray 22 and send the granular dry ice into the suspension tube 3. The anti-escape body 41 is used to prevent the granular dry ice from escaping.

[0041] In the dry ice rapid-release auxiliary cooling device for refrigerated vehicles according to an embodiment of the present invention, granular dry ice is evenly distributed on a tray 22. The granular shape increases the specific surface area of the dry ice per unit mass. After the fan 12 is activated, air flows through the air inlet end 1111 into the air intake duct 11, then flows out through the air outlet end 1121 and into the tray holder 21. The air flows through the mesh of the mesh structure, contacting the granular dry ice in the tray 22 and lifting the granular dry ice. This accelerates the air velocity at the surface of the granular dry ice while preventing the granular dry ice, which gradually decreases in volume during sublimation, from falling through the mesh due to gravity. The air then carries the granular dry ice through the other end of the holding tank 211 and into the suspension tube 3 through the inlet end 311, where it is suspended, promoting its full sublimation under the continuous airflow. Since the suspension tube 3 has an adjustable length, the length of the suspension tube 3 can be adjusted according to the airflow velocity. The anti-escape body 41 is used to prevent insufficiently sublimated granular dry ice from escaping from the outlet 321. On the one hand, such a configuration can further promote the sufficient sublimation of the granular dry ice. On the other hand, it can reduce the possibility of accidents caused by slippery ground caused by the escape of granular dry ice due to excessive airflow velocity, thereby improving user safety.

[0042] The auxiliary refrigeration device for rapid release of cold energy of dry ice in the refrigerated truck accelerates the air flow rate on the surface of granular dry ice with a larger specific surface area, improves the sublimation efficiency of dry ice, promotes rapid release of cold energy of dry ice, and enables the granular dry ice to fully sublime therein, thereby improving the refrigeration efficiency. As an auxiliary pre-cooling device in the pre-cooling stage of the refrigerated truck, it can greatly save pre-cooling time, shorten the cycle of the logistics chain, improve logistics efficiency, and reduce vehicle fuel consumption, thereby optimizing energy utilization efficiency. In addition, the sublimation of dry ice does not produce substances that are harmful to the environment, can reduce carbon emissions, and has the properties of energy saving and environmental protection.

[0043] It should be noted that the dry ice cold energy quick release auxiliary refrigeration device in the refrigerated truck in each embodiment can be used not only for auxiliary pre-cooling of the refrigerated truck, but also can be used in various other scenarios requiring rapid cooling.

[0044] In actual use scenarios, as the ambient temperature drops rapidly to the dew point of water vapor in the air, that is, 0°C, a large amount of ice will form on the tray 22, blocking the mesh and thus hindering the passage of air. At this time, the dry ice in the refrigerated truck will release the cooling energy quickly and the auxiliary refrigeration device will automatically stop operating.

[0045] It should be noted that by synchronously controlling and adjusting the flow rate of the airflow provided by the fan 12 and the length of the suspension pipe 3, the cooling efficiency of the auxiliary cooling device for rapid release of dry ice cooling energy in the refrigerated truck can be adjusted, which is more flexible in use.

[0046] See also Figure 4 and Figure 6 In a specific embodiment, the dry ice cold energy rapid release auxiliary refrigeration device in a refrigerated vehicle further includes a slewing bearing 5, which includes an inner ring 51 and an outer ring 52 rotatably mounted outside the inner ring 51. The inner ring 51 is fixedly connected to the air intake duct 11, and the outer ring 52 is fixedly connected to the tray holder 21 via bolts or other fasteners, so that the tray holder 21 is rotatably mounted on the air intake duct 11. The slewing bearing 5 serves as a connecting component between the air intake duct 11 and the tray holder 21. When the outer ring 52 rotates relative to the inner ring 51, it drives the tray holder 21, the tray 22, and the granular dry ice on the tray 22 to rotate relative to the air intake duct 11, thereby changing the contact angle between the granular dry ice and the airflow, ensuring more uniform contact between the granular dry ice and the airflow. This optimizes airflow utilization and improves the uniformity and efficiency of dry ice sublimation.

[0047] It should be noted that the outer ring 52 of the slewing bearing 5 can be driven by an external motor, gear or worm gear transmission device.

[0048] See also Figures 5 to 7 In a specific embodiment, the suspension tube 3 comprises an inner tube 31, an outer tube 32, and a positioning member 33. The outer tube 32 slidably fits over the inner tube 31 and is provided with a number of positioning holes 322 spaced along its length. The positioning member 33 is connected to the inner tube 31 and, when the inner tube 31 extends outward or retracts inward relative to the outer tube 32, intersects with different positioning holes 322 to lock the inner tube 31 in different positions relative to the outer tube 32. The outer tube 32 and the inner tube 31 form a telescopic foundation. By adjusting the telescopic state between the inner and outer tubes 31, and by aligning the positioning member 33 with the different positioning holes 322, the suspension tube 3 can be stably maintained at different lengths. The interaction between the positioning member 33 and the positioning holes 322 not only limits relative movement between the inner and outer tubes 31, 32, but also limits relative rotation, enhancing the stability and reliability of the overall structure.

[0049] In this embodiment, the inner tube 31 is connected to the tray seat 21 , and the outer tube 32 is connected to the anti-escape mechanism 4 .

[0050] See also Figure 4 and Figure 5In this embodiment, the positioning hole 322 passes through the inner and outer walls of the outer tube 32. The positioning member 33 includes an elastic member 331 and a cylindrical pin 332. The two ends of the elastic member 331 are respectively connected to the outer wall of the inner tube 31 and the cylindrical pin 332, and are used to provide an elastic force to drive the cylindrical pin 332. When it is necessary to fix the length of the suspension tube 3, the cylindrical pin 332 and the positioning hole 322 are at the same horizontal axis position, and are driven by the elastic force of the elastic member 331 to extend axially into the positioning hole 322 to lock the inner tube 31 and the outer tube 32 relative to each other. When it is necessary to adjust the length of the suspension tube 3, the cylindrical pin 332 is acted upon by the force outside the outer tube 32, compressing the elastic member 331 and causing the cylindrical pin 332 to disengage from the positioning hole 322 to unlock the inner tube 31 and the outer tube 32.

[0051] During specific use, since the positioning hole 322 passes through the inner wall and the outer wall of the outer tube 32, the operator presses the cylindrical pin 332 from the outside to make it withdraw from the corresponding positioning hole 322, and then pulls the inner tube 31 or the outer tube 32, so that the inner tube 31 and the outer tube 32 produce axial relative sliding, driving the cylindrical pin 332 to move to the other positioning hole 322 for alignment. At this time, the elastic member 331 is reset, providing elastic force to drive the cylindrical pin 332 into the positioning hole 322, thereby completing a length adjustment of the suspension tube 3. The adjustment is relatively fast, simple and labor-saving.

[0052] In this embodiment, the elastic member 331 is a spring, and the cylindrical pin 332 includes a connecting plate and a positioning column connected to each other. The aperture of the positioning hole 322 is larger than the diameter of the positioning column and smaller than the width of the connecting plate. The connecting plate is connected to the elastic member 331, and the positioning column is used to extend into the positioning hole 322. The positioning column has a reduced diameter structure, and the reduced end of the positioning column is exposed in the positioning hole 322.

[0053] In other embodiments, the positioning member 33 is a bolt, and the positioning member 33 is connected to the inner tube 31 by a threaded connection. When adjusting, it is necessary to first release the threaded connection to allow the positioning member 33 to withdraw from the corresponding positioning hole 322. After adjusting the relative state of the inner tube 31 and the outer tube 32, the positioning member 33 is inserted into another positioning hole 322 and repeatedly threaded on the inner tube 31. This method is more cumbersome and laborious in operation.

[0054] See also Figure 4 and Figure 7In a specific embodiment, the tray seat 21 has a hollow tubular structure. An annular receiving groove 211 is formed along the inner wall of the tray seat 21 along its circumference. A clearance opening 212 is formed on the tray seat 21, communicating with the exterior and the receiving groove 211. The tray 22 enters the receiving groove 211 through the clearance opening 212, with its bottom pressing against the wall of the receiving groove 211. By pushing the tray 22 from the exterior through the clearance opening 212 into the receiving groove 211 and pressing the tray 22 against the wall of the receiving groove 211, the tray 22 is stably placed on the tray seat 21. The tray 22 and tray seat 21 form a drawer-like fit, which is quick and convenient, and facilitates the loading and replacement of dry ice, improving user convenience.

[0055] In this embodiment, the tray 22 includes a tray body and a stainless steel mesh. The mesh structure at the bottom of the tray 22 is formed on the stainless steel mesh. The mesh size of the stainless steel mesh is 18 meshes.

[0056] In a further embodiment, the tray 22 is completely embedded in the tray seat 21 , and the outer peripheral wall of the tray body is flush with the outer peripheral wall of the tray seat 21 , thereby increasing the aesthetics of the overall structure.

[0057] In an embodiment not shown in the drawings, a handle for easy pulling is provided on the portion of the tray body exposed from the clearance opening 212 , thereby facilitating the removal of the tray 22 from the tray seat 21 .

[0058] In other embodiments, the tray 22 can enter from both ends of the receiving groove 211 and be placed as a whole in the receiving groove 211. However, such a structural arrangement requires that the connection between the tray seat 21 and the air intake duct 11 or the suspension pipe 3 be released when the dry ice needs to be loaded or replaced, which is inconvenient in operation.

[0059] See also Figures 2 to 4 as well as Figure 6 In this specific embodiment, the escape prevention mechanism 4 further includes a pipe 42, whose ends are respectively connected to the outlet end 321 of the suspension tube 3 and the flared end 411 of the umbrella-shaped escape prevention body 41. The pipe 42 is provided with a gas release hole 421 extending through its circumference. The cooled airflow and the gas generated by the sublimation of the granular dry ice are released through the gas release hole 421. This release of the cooled airflow effectively cools the device and reduces the pressure inside the pipe 42, reducing pressure buildup within the device and improving its safety and service life.

[0060] In a further embodiment, a plurality of gas release holes 421 are provided and are evenly spaced along the circumference of the tube 42 , so that the cooled air flow can be released and diffused outward in a mixed manner.

[0061] It should be noted that the gas release hole 421 may also be provided on the outer tube 32 connected to the escape prevention mechanism 4 .

[0062] See also Figures 2 to 4 In a further embodiment, the air intake duct 11 includes a horizontal tube portion 111 and a vertical tube portion 112. One end of the horizontal tube portion 111 is connected to one end of the vertical tube portion 112, and the other end of the horizontal tube portion 111 is an air intake end 1111, while the other end of the vertical tube portion 112 is an air outlet end 1121. The vertical tube portion 112, the tray seat 21, the suspension tube 3, and the anti-escape mechanism 4 are arranged in sequence from bottom to top and are all arranged vertically. The curved connection design of the horizontal tube portion 111 and the vertical tube portion 112 optimizes the airflow path, provides a buffer for the airflow to contact the granular dry ice, and avoids instability caused by rapid and direct impact. The remaining structures are arranged vertically, which conforms to the natural upward characteristics of the airflow and the gas formed after the sublimation of the granular dry ice. The structural arrangement and layout of this embodiment make the overall structure lightweight, compact, and space-saving.

[0063] See also Figure 1 and Figure 8 In a specific embodiment, the dry ice quick-release auxiliary cooling device for a refrigerated truck further includes a fixing assembly 7, which includes a bracket 71, a clamp 72, and a connector 73 for connecting the bracket 71 and the clamp 72. The clamp 72 is engaged with the outside of the vertical tube 112, maintaining the horizontal tube 111 in a horizontal state, and maintaining the vertical tube 112, the tray seat 21, the suspension tube 3, and the anti-escape mechanism 4 in a vertical state. Through the coordinated cooperation between the bracket 71, the clamp 72, and the connector 73, the dry ice quick-release auxiliary cooling device for a refrigerated truck can be kept stable as a whole, and the corresponding components mentioned in the above embodiments can be maintained in their vertical state, thereby enabling the dry ice quick-release auxiliary cooling device for a refrigerated truck to fully realize its advantages of optimizing airflow, saving space, improving energy efficiency, and facilitating maintenance.

[0064] In a specific embodiment in which the above-mentioned connecting member 73 is used to connect the bracket 71 and the clamp 72, the bracket 71 includes a plurality of support rods 711 arranged around the outer circumference of the vertical tube portion 112, and a gap 712 is provided between two adjacent support rods 711 in one group so that the horizontal tube portion 111 can extend out of the bracket 71. The clamp 72 is provided with connecting ears 722, and the number of connecting ears 722 is the same as the number of support rods 711. Each connecting ear 722 is arranged at intervals along the circumference of the clamp 72 and corresponds one-to-one to each support rod 711. The connecting member 73 includes the same number of fastening bolts 731 as the number of support rods 711, and each fastening bolt 731 corresponds one-to-one to each support rod 711 and each connecting ear 722. The fastening bolt 731 is used to pass through and lock the connecting ear 722 and the support rod 711.

[0065] Since multiple support rods 711 are arranged around the outer circumference of the vertical tube portion 112, and multiple connecting ears 722 are arranged at intervals along the circumference of the clamp 72, the support rods 711 and the connecting ears 722 are connected one by one by fastening bolts 731, providing a specific and feasible connection structure for the bracket 71 and the clamp 72 through the connector 73, and can provide uniform and stable support for the air intake duct 11 and various components thereon, thereby improving the stability and reliability of the dry ice cold energy rapid release auxiliary refrigeration device in the refrigerated truck, ensuring that it can exert its rapid cooling effect.

[0066] In this embodiment, three support rods 711 are provided. One support rod 711 is located in the horizontal extension direction of the horizontal tube portion 111 and is arranged on the side of the horizontal tube portion 111 facing away from the air inlet end 1111. The other two support rods 711 are arranged on both sides of the horizontal tube portion 111 in a direction perpendicular to the horizontal extension direction, forming a gap 712. The clamp 72 includes two semi-circular half-piece clamps 721, which are connected end to end to clamp the vertical tube portion 112. One half-piece clamp 721 is provided with a connecting ear 722, and the other half-piece clamp 721 is provided with two connecting ears 722.

[0067] Three support rods 711 are arranged around the vertical tube portion 112, one of which is located opposite to the extension direction of the horizontal tube portion 111, and the other two are perpendicular to the direction. This support structure is mechanically stable. The clamp 72 includes two half-pieces of the clamp 721 and the connecting ears 722 are respectively provided on the two half-pieces of the clamp 721, which can effectively disperse the stress. When installing the clamp 72, the two half-pieces of the clamp 721 are allowed to be installed from both sides of the vertical tube portion 112 respectively, and then the two half-pieces of the clamp 721 are connected by bolts and other fasteners, which is more convenient in operation.

[0068] In a further embodiment, a positioning groove is provided on the support rod 711, and the connecting ear 722 is embedded in the positioning groove, which can increase the contact area between the support rod 711 and the connecting ear 722, enhance the stability of the connection, and facilitate rapid positioning during connection, thereby improving assembly efficiency.

[0069] See also Figures 1 to 9 Another embodiment of the present invention provides a refrigerated truck comprising a compartment 6 and the dry ice quick-release auxiliary refrigeration device of any of the above-described embodiments, wherein the dry ice quick-release auxiliary refrigeration device is fixed within the compartment 6. The refrigerated truck has the characteristics of a short pre-cooling time and high fuel energy utilization efficiency.

[0070] See also Figure 1 and Figure 9In this embodiment, the support rod 711 is fixedly connected to the bottom plate 61 of the carriage 6 by welding, screwing, etc., and stands upright on the bottom plate 61 of the carriage 6, and the horizontal pipe portion 111 of the air intake duct 11 is in a horizontal state and adheres to the bottom plate 61 of the carriage 6.

[0071] It should be noted that refrigerated trucks are suitable for transporting frozen goods or refrigerated goods. When compartment 6 is suitable for refrigerating goods, the ambient temperature when the dry ice cold energy quick release auxiliary refrigeration device in the refrigerated truck automatically stops running has reached the standard for the goods to enter the cold storage. When compartment 6 is suitable for freezing goods, the dry ice cold energy quick release auxiliary refrigeration device in the refrigerated truck plays an auxiliary pre-cooling role, and the subsequent refrigeration tasks will be completed by the on-board refrigeration system until the ambient temperature in compartment 6 reaches below -18°C. In the above two cases, the use of the dry ice cold energy quick release auxiliary refrigeration device in the refrigerated truck can effectively save energy and significantly shorten the pre-cooling time, thereby improving overall energy efficiency and operational efficiency.

[0072] It should be noted that in specific usage scenarios, one or more refrigerated dry ice quick-release auxiliary cooling devices can be set in the compartment 6 according to the specifications of the compartment 6 and the need for pre-cooling time to meet the usage requirements of the specific scenario.

[0073] It should be noted that the components involved in the above embodiments are preferably made of low-temperature-resistant, corrosion-resistant, and high-strength materials, such as stainless steel, aluminum alloy, or engineering plastics. For components that come into direct contact with granular dry ice, such as stainless steel mesh and the inner wall of the pipe, inert materials such as stainless steel or PTFE are preferred. For components requiring high-strength connections, metal materials are preferred.

[0074] It should be noted that in the above-mentioned embodiments, various connection methods can be selected for the connections between two components, including but not limited to the connections between the air intake duct 11 and the inner ring 51 of the slewing bearing 5, the outer ring 52 of the slewing bearing 5 and the tray seat 21, the tray body and the stainless steel mesh, the tray seat 21 and the suspension tube 3, and the suspension tube 3 and the anti-escape mechanism 4, depending on the actual situation. Preferably, metric connection methods, such as welding, bolt and nut connection, bolt or screw connection, and other detachable or non-detachable connection methods can be used. In particular, welding is preferred for all references to fixed connections mentioned above.

[0075] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are those of description and illustration, rather than limitation. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A device for rapidly releasing dry ice cooling energy in a refrigerated vehicle, characterized in that: include: An air intake assembly comprises an air intake duct and a fan, wherein the two ends of the air intake duct are an air intake end and an air outlet end respectively; A tray assembly, comprising a tray seat and a tray for placing granular dry ice, wherein the tray seat is connected to the air outlet end of the air inlet duct and is used to support the tray, and the bottom of the tray is a mesh structure; The suspension tube is a length-adjustable structure having an inlet end and an outlet end at its two ends, the inlet end of the suspension tube being connected to the tray seat, the suspension tube comprising an inner tube, an outer tube, and a positioning member, the outer tube being slidably sleeved on the outside of the inner tube and provided with a plurality of positioning holes spaced apart along its length, the positioning member being able to interpenetrate and cooperate with different positioning holes when the inner tube extends outward or retracts inward relative to the outer tube, so as to lock the inner tube in different positions relative to the outer tube, the positioning member comprising an elastic member and a cylindrical pin, the two ends of the elastic member being respectively connected to the outer wall of the inner tube and the cylindrical pin, and being used to provide an elastic force to drive the cylindrical pin; an anti-escape mechanism connected to the outlet end of the suspension tube, the anti-escape mechanism comprising an anti-escape body in an umbrella-shaped structure; The fan is configured to provide an airflow to the air inlet end of the air inlet duct, which passes through the air inlet duct and the tray seat in sequence. The airflow is used to blow up the granular dry ice in the tray from the bottom of the tray and send the granular dry ice into the suspension tube. The anti-escape body is used to prevent the granular dry ice from escaping.

2. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 1, characterized in that: It also includes a slewing bearing, which includes an inner ring and an outer ring rotatably mounted outside the inner ring. The inner ring is fixedly connected to the air outlet end of the air intake duct, and the outer ring is fixedly connected to the tray seat so that the tray seat can be rotatably mounted on the air intake duct.

3. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 1, characterized in that: The positioning hole passes through the inner wall and the outer wall of the outer tube; When the length of the suspension tube needs to be fixed, the cylindrical pin and the positioning hole are located at the same horizontal axis position, and are driven by the elastic force of the elastic member to extend axially into the positioning hole to relatively lock the inner tube and the outer tube; When the length of the suspension tube needs to be adjusted, the cylindrical pin is acted upon by the force outside the outer tube, compressing the elastic member and causing the cylindrical pin to escape from the positioning hole, thereby unlocking the inner tube and the outer tube.

4. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 1, characterized in that: The tray seat is a hollow tubular structure, and the inner wall of the tray seat is provided with an annular receiving groove along its circumference. The tray seat is provided with a clearance opening which is connected to the outside and the receiving groove respectively. The tray enters the receiving groove through the clearance opening, and its bottom is pressed against the groove wall of the receiving groove.

5. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 1, characterized in that: The anti-escape mechanism also includes a pipe fitting, the two ends of which are respectively connected to the outlet end of the suspension tube and the flared end of the anti-escape body in an umbrella-shaped structure, and the pipe fitting is provided with a gas release hole running through its peripheral wall.

6. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 1, characterized in that: The air intake duct includes a horizontal pipe portion and a vertical pipe portion, one end of the horizontal pipe portion is connected to one end of the vertical pipe portion, and the other end of the horizontal pipe portion is the air intake end, and the other end of the vertical pipe portion is the air outlet end; The vertical tube portion, the tray seat, the suspension tube and the anti-escape mechanism are arranged in sequence from bottom to top and are all arranged vertically.

7. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 6, characterized in that: It also includes a fixing assembly, which includes a bracket, a clamp and a connector for connecting the bracket and the clamp. The clamp is engaged with the outside of the vertical tube portion and keeps the horizontal tube portion in a horizontal state, and the vertical tube portion, the tray seat, the suspension tube and the anti-escape mechanism remain in a vertical state.

8. The dry ice cooling energy rapid release auxiliary refrigeration device in a refrigerated vehicle according to claim 7, characterized in that: The bracket includes a plurality of support rods arranged around the outer circumference of the vertical tube portion, and a gap is provided between two adjacent support rods in a group for the horizontal tube portion to extend out of the bracket; The hoop is provided with connecting ears, the number of which is the same as the number of the support rods, and the connecting ears are arranged at intervals along the circumference of the hoop and correspond one-to-one to the support rods; The connecting member includes the same number of fastening bolts as the supporting rods, and each fastening bolt corresponds to each supporting rod and each connecting ear one by one, and the fastening bolt is used to pass through and lock the connecting ear and the supporting rod.

9. A refrigerated truck, characterized in that: The invention comprises a vehicle compartment and the auxiliary refrigeration device for rapidly releasing the cold energy of dry ice in a refrigerated vehicle according to any one of claims 1 to 8, wherein the auxiliary refrigeration device for rapidly releasing the cold energy of dry ice in a refrigerated vehicle is fixed in the vehicle compartment.

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