Litchi rapid cooling box

Abstract

The utility model relates to litchi processing technical field discloses a kind of litchi rapid cooling box, including bearing plate, the top of bearing plate is equipped with ventilating box, the inside of ventilating box is placed with multiple net frame, the inside of ventilating box is provided with lateral ventilating mechanism, the lateral ventilating mechanism is used to guide the cold air of outside into the inside of ventilating box, the outside of bearing plate is provided with vertical ventilating mechanism, the vertical ventilating mechanism is used to guide the cold air of outside through bottom into the inside of ventilating box.In the utility model, ventilating box is separated area by inner partition and locking assembly, and independent cold air passage is formed by cooperating air flow groove, circulation port etc., fixed assembly stabilizes box, and vertical ventilating mechanism and lateral air current convection at the same time, net frame enhances cold air penetration, realizes the effect that litchi is efficiently rapidly cooled, and multiple-path cold air circulation eliminates cooling dead angle, and cooling efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lychee processing technology, and in particular to a rapid cooling box for lychees. Background Technology

[0002] The lychee cooling box is a professional piece of equipment used for rapid cooling and preservation of lychees after harvesting. It mainly works by constructing a controllable cold air circulation system to quickly lower freshly picked lychees from a high temperature to a suitable low temperature environment for storage, thereby inhibiting fruit respiration and slowing down the rate of spoilage. Its core function is to reduce the temperature of the lychee core in the shortest possible time through physical cooling, while ensuring that the surface of the fruit is not damaged by cold.

[0003] In the lychee industry chain, the cooling box is a key link connecting harvesting and cold chain transportation. Especially for lychees, which are easily perishable, efficient cooling treatment directly affects their shelf life and commercial value. With the development of fresh food cold chain technology, the market has put forward higher requirements for the cooling efficiency, uniformity and energy consumption of lychee cooling equipment, but the existing technology still has obvious shortcomings.

[0004] Existing lychee cooling boxes mostly use unidirectional airflow or static cold air contact to achieve cooling. Relying on natural convection or simple airflow guidance to contact the lychees, they can reduce the surface temperature of the fruit to a certain extent. However, these devices generally suffer from slow cooling speed and poor uniformity. On the one hand, the unidirectional airflow results in poor cold air circulation inside the box, and the center of the lychee stacking area cannot receive enough cold air, forming a cooling dead zone. Especially when multiple layers of lychees are placed in the box, the bottom layer of fruit cools down slower than the surface layer. On the other hand, the airflow channel design of existing devices lacks specificity. The cold air faces greater resistance when flowing inside the box and does not form a three-dimensional circulation, resulting in low heat exchange efficiency between the lychees and the cold air. After entering the box, the cold air cannot penetrate the stacked lychee layers and can only flow along the edges, causing the core temperature of the fruit to drop slowly, which is difficult to meet the time-sensitive requirements of large-scale lychee preservation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a rapid cooling box for lychees, which aims to improve the problems of slow cooling speed and poor uniformity in the existing technology of unidirectional air supply or static cold air contact.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rapid cooling box for lychees, comprising a support plate, a venting box installed on the top of the support plate, multiple mesh frames placed inside the venting box, a lateral ventilation mechanism provided inside the venting box for introducing cold air from the outside into the inside of the venting box, and a vertical ventilation mechanism provided outside the support plate for introducing cold air from the outside into the inside of the venting box through the bottom;

[0007] The lateral ventilation mechanism includes multiple inner partitions, each of which is fixedly connected to the inside of the ventilation box via a locking assembly. Each inner partition has an airflow groove. The ventilation box has multiple external circulation ports around its perimeter. Multiple internal circulation ports are equidistantly located on the front and rear sides of the ventilation box. Each inner partition has a connection port on its front and rear sides, which is connected to the internal circulation ports. Multiple flow ports are located on the left and right sides of the inner partitions, and these flow ports are connected to the connection ports via the airflow grooves. A fixing assembly is provided on the outside of the ventilation box.

[0008] As a further description of the above technical solution:

[0009] The vertical ventilation mechanism includes multiple external circulation ports II, which are respectively opened around the outside of the support plate. Multiple air guide fans are fixedly installed at equal intervals on the bottom inner side of the support plate, and multiple air inlets are opened on the top inner side of the support plate.

[0010] As a further description of the above technical solution:

[0011] The locking assembly includes two tenons, which are respectively fixedly connected to the front and rear top ends of the inner partition. The front and rear top ends of the interior of the vent box are provided with grooves, and the top of the two tenons and the grooves are threadedly connected with locking bolts.

[0012] As a further description of the above technical solution:

[0013] The fixing assembly includes multiple L-shaped connectors, which are respectively fixedly connected to the front and rear sides and left and right ends of the vent box. Each of the multiple L-shaped connectors has a fixing bolt running through its interior, and the ends of the fixing bolts are respectively threaded to the four corners at the top of the support plate.

[0014] As a further description of the above technical solution:

[0015] Anti-slip pads are fixedly connected to the four corners of the bottom of the support plate, and the bottom of the multiple anti-slip pads adopts a toothed corrugated design.

[0016] As a further description of the above technical solution:

[0017] Rubber heat-insulating handles are fixedly connected to the top of both the left and right sides of the vent box, and the exterior of both rubber heat-insulating handles is treated with a frosted finish.

[0018] As a further description of the above technical solution:

[0019] The top of the support plate has a limiting groove, and the internal dimensions of the limiting groove match the bottom dimensions of the vent box.

[0020] As a further description of the above technical solution:

[0021] The top outer sides of multiple mesh frames are designed with an outward tilt angle, and the inner sides of multiple mesh frames are designed with an arc shape.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the ventilation box is divided into areas by the inner partition and locking components, and independent cold air channels are formed with the air flow groove and circulation port. The fixing components stabilize the box, while the vertical ventilation mechanism and the lateral airflow convection, and the mesh frame enhance the penetration of cold air, so as to achieve the effect of efficient and rapid cooling of lychee. The multi-path cold air circulation eliminates the cooling dead corners and greatly improves the cooling efficiency.

[0024] 2. In this utility model, the air is introduced through the external circulation port in two directions, and the guide fan accelerates the push of cold air. The air is evenly distributed in the air inlet. After the cold air enters the ventilation box from the bottom, it forms a three-dimensional circulation with the side airflow, which fully contacts the lychee. This achieves the effect of efficient and uniform introduction of cold air, forming a three-dimensional cold air circulation, accelerating heat exchange, improving the cooling speed and uniformity of the lychee, meeting the needs of rapid cooling, and ensuring that the lychee is quickly cooled to the required temperature. Attached Figure Description

[0025] Figure 1 This is a perspective view of a rapid cooling box for lychees proposed in this utility model;

[0026] Figure 2 This is a front view of a rapid cooling box for lychees proposed in this utility model;

[0027] Figure 3 This is a structural exploded view of a rapid cooling box for lychees proposed in this utility model;

[0028] Figure 4 This is a bottom view of a rapid cooling box for lychees proposed in this utility model;

[0029] Figure 5 This is a partial structural exploded view of the lateral ventilation mechanism in a rapid cooling box for lychees proposed in this utility model.

[0030] Legend:

[0031] 1. Support plate; 2. Ventilation box; 3. Wire frame; 4. Lateral ventilation mechanism; 401. Inner partition; 402. Air flow channel; 403. External circulation port one; 404. Internal circulation port; 405. Connection port; 406. Flow port; 407. Locking component; 4071. Tenon; 4072. Groove; 4073. Locking bolt; 408. Fixing component; 4081. L-shaped connector; 4082. Fixing bolt; 5. Vertical ventilation mechanism; 501. External circulation port two; 502. Guide fan; 503. Air inlet; 6. Anti-slip pad; 7. Rubber heat-insulating handle; 8. Limiting groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 5 An embodiment of this utility model is provided: a rapid cooling box for lychees, including a support plate 1, a ventilated box 2 installed on the top of the support plate 1, a plurality of mesh frames 3 placed inside the ventilated box 2, a lateral ventilation mechanism 4 provided inside the ventilated box 2, the lateral ventilation mechanism 4 being used to introduce cold air from the outside into the inside of the ventilated box 2, and a vertical ventilation mechanism 5 provided outside the support plate 1, the vertical ventilation mechanism 5 being used to introduce cold air from the outside into the inside of the ventilated box 2 through the bottom;

[0034] The lateral ventilation mechanism 4 includes multiple inner partitions 401, all of which are fixedly connected to the inside of the ventilation box 2 by locking components 407. Each locking component 407 includes two tenons 4071, which are respectively fixedly connected to the front and rear top ends of the inner partitions 401. Grooves 4072 are provided on both the front and rear top ends of the inside of the ventilation box 2. Locking bolts 4073 are threaded onto the tops of the adjacent tenons 4071 and grooves 4072. Airflow channels 402 are provided inside the inner partitions 401. Multiple external circulation ports 403 are provided around the outside of the ventilation box 2. Multiple internal circulation ports 404 are equidistantly provided on the front and rear sides of the ventilation box 2. Multiple inner partitions 401 have connection ports 405 on their front and rear sides, and the multiple connection ports 405 are connected to multiple inner circulation ports 404 respectively. Multiple flow ports 406 are opened on the left and right sides of the inner partitions 401. The multiple flow ports 406 and the connection ports 405 are connected through air flow channels 402. A fixing component 408 is provided on the outside of the vent box 2. The fixing component 408 includes multiple L-shaped connectors 4081. The multiple L-shaped connectors 4081 are fixedly connected to the front and rear left and right ends of the vent box 2 respectively. The interior of each of the multiple L-shaped connectors 4081 is penetrated by a fixing bolt 4082. The ends of the multiple fixing bolts 4082 are threaded to the top four corners of the bearing plate 1 respectively.

[0035] Specifically, the inner partitions 401 are equidistantly arranged within the ventilated box 2 and fixed by the locking components 407, dividing the box into multiple independent areas. Each area's mesh frame 3 forms an independent cold air circulation channel through the airflow channels 402 and connection ports 405 of the inner partitions 401, and the external circulation port 403 and internal circulation port 404 of the ventilated box 2. External cold air enters through the external circulation port 403, flows into the airflow channels 402 via the flow port 406, and is evenly guided to each mesh frame 3 through the connection ports 405 and internal circulation ports 404. The L-shaped connectors 4081 and fixing bolts 4082 of the fixing components 408 ensure the stability of the box structure and prevent swaying caused by airflow impact. During the cooling process, multi-path cold air circulation ensures that each lychee within the mesh frame 3 comes into contact with high-speed flowing cold air. The smooth channel design of the airflow groove 402 reduces resistance and ensures uniform distribution of cold air pressure. The diversion effect of the inner baffle 401 causes cold air in adjacent areas to form cross-convection, eliminating cooling dead zones. For example, after the cold air in the front area enters through the inner circulation port 404, it converges with the cold air in the rear area around the mesh frame 3, forming a three-dimensional cooling airflow. This three-dimensional airflow can accelerate heat exchange, shorten the contact time of cold air on the surface of each lychee, and improve cooling efficiency. The mesh structure of the mesh frame 3 further enhances the penetration of cold air, allowing the surface of the lychee to be fully exposed to the cold air. In a mesh structure, as cold air passes through the mesh, it carries away the heat generated by the respiration of the lychee, rapidly lowering the fruit temperature. Under the same airflow rate, the mesh structure significantly increases the heat exchange coefficient on the lychee surface, resulting in a much faster cooling rate for a single lychee compared to traditional sealed containers. Simultaneously, the cold air introduced from the bottom by the vertical ventilation mechanism 5 forms convection with the lateral airflow, accelerating heat exchange. This synergistic effect greatly enhances the cooling rate within a single mesh frame 3, and also significantly improves the simultaneous processing capacity of multiple mesh frames 3. Through the modular design of the inner partitions 401, the number of partitions 401 can be adjusted according to the lychee processing volume, flexibly configuring the cooling area. When the processing volume is small, the number of inner partitions 401 can be reduced, expanding the cooling capacity. The large single cooling area provides ample space; when processing large volumes, additional internal partitions 401 are added to create more independent channels. This adjustability ensures optimal cooling efficiency across different production scales. The detachable locking component 407 facilitates cleaning and maintenance, preventing microbial growth that could affect preservation. The four-point fixing of the fixing component 408 ensures stability of the chamber under high-speed airflow, extending the equipment's lifespan. In practical applications, this structure allows lychees to rapidly cool from harvest temperature to below five degrees Celsius, meeting cold chain transportation requirements. The overall structure achieves triple optimization: simultaneous cooling in multiple areas, efficient cold air circulation, and flexible equipment maintenance, meeting the needs of large-scale lychee preservation processing.

[0036] Reference Figure 2 , Figure 3 and Figure 4The vertical ventilation mechanism 5 includes multiple external circulation ports 501, which are respectively opened around the outside of the support plate 1. Multiple guide fans 502 are fixedly installed at equal intervals on the bottom inner side of the support plate 1, and multiple air inlets 503 are opened on the top inner side of the support plate 1.

[0037] Specifically, the vertical ventilation mechanism 5, through the coordinated operation of the external circulation port 2 501, the guide fan 502, and the air inlet 503, enables external cold air to be introduced into the ventilation box 2 from the bottom. Multiple external circulation ports 2 501 are opened around the outer perimeter of the support plate 1, serving as the initial channel for cold air entry. Multiple guide fans 502, equidistantly installed on the inner bottom, provide airflow power. Multiple air inlets 503 on the inner top guide the cold air into the ventilation box 2. When the guide fan 502 is activated, external cold air is drawn into the support plate 1 through the external circulation port 2 501. The distribution design of the external circulation ports 2 501 allows cold air to enter simultaneously from multiple directions, avoiding uneven airflow caused by a single inlet. The guide fan 502 accelerates and pushes the drawn-in cold air upwards, forming a vertically upward airflow. The air inlets 503 on the inner top of the support plate 1 correspond to the positions of the guide fans 502, ensuring that the accelerated airflow... Cold air can smoothly enter the ventilation box 2 through the air inlet 503. The density of the air inlet 503 matches the distribution density of the guide fan 502, so that the cold air can enter the ventilation box 2 evenly from all positions at the bottom. As the cold air enters the ventilation box 2, it meets the cold air introduced by the side ventilation mechanism 4 during its ascent, forming a three-dimensional circulating airflow. This circulation allows the cold air to fully contact the lychees placed in the mesh frame 3, accelerating heat exchange and achieving rapid cooling of the lychees. Through the multi-directional air intake design of the external circulation port 501, the airflow acceleration effect of the guide fan 502, and the uniform air distribution function of the air inlet 503, the effect of efficient and uniform introduction of cold air into the ventilation box 2 from the bottom is achieved. Through the coordinated operation of the vertical ventilation mechanism 5 and the side ventilation mechanism 4, a three-dimensional cold air circulation is achieved in the ventilation box 2, effectively improving the cooling speed and uniformity of the lychees and meeting the needs of rapid cooling.

[0038] Reference Figure 3 and Figure 4 Anti-slip pads 6 are fixedly connected to the four corners of the bottom of the support plate 1, and the bottom of the multiple anti-slip pads 6 adopts a toothed corrugated design; rubber heat-insulating handles 7 are fixedly connected to the top of the left and right sides of the ventilation box 2, and the exterior of the two rubber heat-insulating handles 7 adopts a frosted process; a limiting groove 8 is opened on the top of the support plate 1, and the internal size of the limiting groove 8 matches the bottom size of the ventilation box 2; the top outer sides of the multiple mesh frames 3 adopt an outward tilting angle design, and the inner four sides of the multiple mesh frames 3 adopt an arc design;

[0039] Specifically, the anti-slip pads 6 at the four corners of the bottom of the support plate 1 have a toothed corrugated design to increase friction with the contact surface. When the equipment is running, the vibration generated by the guide fan 502 and the airflow impact caused by the cold air flow are dispersed to the contact surface through the toothed structure of the anti-slip pads 6, reducing the risk of equipment displacement. The rubber heat-insulating handles 7 on the top of the left and right sides of the ventilation box 2 have a frosted exterior to increase grip friction. When handling or installing the ventilation box 2, the operator's hands come into contact with the frosted surface, increasing friction. At the same time, the rubber material blocks the conduction of cold air inside the box, reducing the degree to which the operator's hands are affected by low temperature. The limiting groove 8 at the top of the support plate 1 has internal dimensions that match the bottom dimensions of the ventilation box 2. When the ventilation box 2 is placed on the support plate 1, the limiting groove 8 forms a lateral constraint on the ventilation box 2. This constraint prevents the ventilation box 2 from horizontal displacement due to airflow impact or external collision during equipment operation, ensuring the lateral ventilation mechanism. Alignment of the interface with the vertical ventilation mechanism 5 ensures the stability of the cold air circulation path. The outward tilt design on the outer top of the mesh frame 3 creates a natural gap when stacked, facilitating grabbing and removal by operators. The arc design on the inner perimeter reduces the contact between the lychees and the frame's sharp edges. When the cold air circulates within the mesh frame 3, the arc surface guides the airflow smoothly, reducing airflow resistance and allowing the cold air to more evenly surround the lychees, thus improving cooling efficiency. The toothed corrugations of the anti-slip pad 6 increase friction, and the frosted finish of the rubber heat-insulating handle 7 enhances grip stability, achieving an anti-slip effect during equipment placement and operation. The positioning constraint of the ventilation box 2 via the limiting groove 8 ensures the structural stability of the cold air circulation system. The tilt and arc design of the mesh frame 3 optimizes the convenience of lychee storage and the efficiency of cold air flow. Through the structural collaboration of multiple components, the cooling box achieves a comprehensive improvement in stability, operability, and cooling performance.

[0040] Working principle: The support plate 1 serves as the basic support component. The limiting groove 8 on its top precisely matches the bottom dimensions of the vent box 2. When the vent box 2 is placed on the support plate 1, the limiting groove 8 provides lateral constraint to the vent box 2, preventing horizontal displacement of the vent box 2 due to vibration of the guide fan 502 or airflow impact during equipment operation. This ensures that the interfaces of the lateral venting mechanism 4 and the vertical venting mechanism 5 remain aligned, maintaining the stability of the cold air circulation path. Simultaneously, the anti-slip pads 6 fixed at the four corners of the bottom of the support plate 1 feature a toothed corrugated design. When in contact with the placement surface, they increase friction to disperse the vibration and airflow impact generated during equipment operation to the contact surface, further reducing the risk of overall displacement of the support plate 1. The vent box 2 serves as the main cooling unit. The system incorporates a lateral ventilation mechanism 4 internally and a vertical ventilation mechanism 5 externally to achieve three-dimensional cold air circulation. Within the lateral ventilation mechanism 4, multiple inner partitions 401 are fixed inside the ventilation box 2 via locking components 407. During installation, the tenons 4071 at the top front and rear sides of the inner partitions 401 are inserted into the grooves 4072 at the top front and rear sides inside the ventilation box 2, and then connected by locking bolts 4073 to securely install the inner partitions 401. This divides the interior of the ventilation box 2 into multiple independent cooling zones. Each inner partition 401 has an airflow groove 402, flow openings 406 on the left and right sides, and connection ports 405 on the front and rear sides, forming a complete cold air circulation system with the external circulation ports 403 around the exterior of the ventilation box 2 and the internal circulation ports 404 on the front and rear sides. In the ring channel, when the equipment is running, external cold air enters from the outer circulation port 403 around the ventilation box 2, flows through the flow port 406 into the air flow groove 402 of the inner baffle 401. Because the air flow groove 402 has a smooth channel design, it effectively reduces the resistance to cold air flow, ensuring uniform distribution of cold air pressure. The cold air flows in the air flow groove 402 to the connection port 405, and through the connection with the inner circulation port 404, it is evenly guided to various areas inside the ventilation box 2. The diversion effect of multiple inner baffles 401 causes the cold air in adjacent areas to form cross-convection. For example, after the cold air in the front area enters through the inner circulation port 404, it converges with the cold air in the rear area around the mesh frame 3, forming a three-dimensional cooling airflow, eliminating cooling dead zones and shortening the cooling time on the surface of the lychee. To improve cooling efficiency, the vertical ventilation mechanism 5 assists in the introduction of cold air from the bottom. External circulation ports 501, located around the perimeter of the support plate 1, serve as the initial inlet for the cold air. Equivalently spaced guide fans 502 at the bottom inner side provide airflow power. When the guide fans 502 are activated, external cold air is drawn into the support plate 1 through the external circulation ports 501. The multi-directional distribution of the external circulation ports 501 avoids uneven airflow caused by a single inlet. The guide fans 502 accelerate the cold air and push it vertically upwards. The air inlets 503 at the top inner side of the support plate 1 correspond to the positions of the guide fans 502, and the density of the air inlets 503 matches the distribution density of the guide fans 502, ensuring that the accelerated cold air enters the ventilation box 2 evenly through the air inlets 503.As the cold air enters the ventilation box 2, it encounters the cold air introduced by the lateral ventilation mechanism 4 during its ascent, forming a three-dimensional circulating airflow. This further accelerates the heat exchange with the lychees. Multiple mesh frames 3 inside the ventilation box 2 are used to store the lychees. Their top outer edges are designed with an outward tilt, creating natural gaps when stacked, making it easy for operators to grab and remove them. The curved design on the inner sides reduces contact between the lychees and the frame's sharp edges. Simultaneously, during cold air circulation, the curved surface guides the airflow smoothly, reducing airflow resistance and allowing the cold air to more evenly surround the lychees, enhancing cold air penetration. When passing through the mesh of frame 3, the air can fully contact the surface of the lychee, carrying away the heat generated by the lychee's respiration. Under the same airflow rate, this significantly increases the heat exchange coefficient of the lychee surface compared to traditional sealed containers, accelerating the cooling rate of individual lychees. In terms of equipment operation, the rubber heat-insulating handles 7 on the top left and right sides of the ventilation box 2 have a frosted finish. When operators move or install the ventilation box 2, the frosted surface increases grip friction. Simultaneously, the rubber material blocks the conduction of cold air inside the ventilation box 2, reducing the impact of low temperatures on the hands. Furthermore, the inner partition 40 in the lateral ventilation mechanism 4... 1. The modular design allows for adjustment of the number of internal partitions 401 based on the lychee processing volume: When processing volume is small, the number of internal partitions 401 can be reduced to expand the space of individual cooling areas; when processing volume is large, more internal partitions 401 can be added to create more independent channels, ensuring optimal cooling efficiency at different production scales. The detachable structure of the locking component 407 facilitates regular cleaning and maintenance, preventing microbial growth that could affect lychee preservation. The fixing component 408 uses L-shaped connectors 4081 and fixing bolts 4082 to fix the venting box 2 at four points on the top four corners of the bearing plate 1, ensuring the box remains stable at high altitudes. Maintaining stability under rapid airflow and extending equipment lifespan, this rapid cooling box for lychees achieves triple optimization through the positioning and coordination of the support plate 1 and the venting box 2, the three-dimensional cold air circulation design of the lateral venting mechanism 4 and the vertical venting mechanism 5, the structural optimization of the mesh frame 3, and the functional synergy of auxiliary components. This results in simultaneous cooling in multiple areas, efficient cold air circulation, and flexible equipment maintenance. In practical applications, it can rapidly reduce lychee temperatures from harvesting temperature to below five degrees Celsius, meeting cold chain transportation requirements and effectively improving the efficiency and cooling speed of lychee preservation processing. It is suitable for large-scale lychee preservation processing scenarios.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid cooling box for lychees, comprising a support plate (1), characterized in that: A ventilation box (2) is installed on the top of the support plate (1). Multiple mesh frames (3) are placed inside the ventilation box (2). A lateral ventilation mechanism (4) is provided inside the ventilation box (2). The lateral ventilation mechanism (4) is used to introduce cold air from the outside into the inside of the ventilation box (2). A vertical ventilation mechanism (5) is provided on the outside of the support plate (1). The vertical ventilation mechanism (5) is used to introduce cold air from the outside into the inside of the ventilation box (2) through the bottom. The lateral ventilation mechanism (4) includes multiple inner partitions (401), which are fixedly connected to the inside of the ventilation box (2) by locking components (407). Each of the inner partitions (401) has an air flow groove (402) inside. Each of the ventilation boxes (2) has multiple external circulation ports (403) around its outer perimeter. Each of the ventilation boxes (2) has multiple internal circulation ports (404) at equal intervals on its front and rear sides. Each of the inner partitions (401) has a connection port (405) on its front and rear sides. Each of the connection ports (405) is connected to the multiple internal circulation ports (404). Each of the inner partitions (401) has a flow port (406) on its left and right sides. Each of the flow ports (406) is connected to the connection port (405) by air flow grooves (402). A fixing component (408) is provided on the outside of the ventilation box (2).

2. The rapid cooling box for lychees according to claim 1, characterized in that: The vertical ventilation mechanism (5) includes multiple external circulation ports (501), which are respectively opened around the outside of the support plate (1). Multiple air guide fans (502) are fixedly installed at equal intervals on the bottom inner side of the support plate (1), and multiple air inlets (503) are opened on the top inner side of the support plate (1).

3. The rapid cooling box for lychees according to claim 1, characterized in that: The locking assembly (407) includes two tenons (4071), which are fixedly connected to the front and rear top ends of the inner partition (401). The front and rear top ends of the vent box (2) are provided with grooves (4072), and the tops of the two tenons (4071) and the grooves (4072) are threadedly connected with locking bolts (4073) between adjacent tenons (4071) and grooves (4072).

4. The rapid cooling box for lychees according to claim 1, characterized in that: The fixing component (408) includes multiple L-shaped connectors (4081), which are fixedly connected to the front and rear left and right ends of the ventilation box (2). Each of the multiple L-shaped connectors (4081) has a fixing bolt (4082) running through its interior. The ends of the multiple fixing bolts (4082) are threaded to the four corners at the top of the bearing plate (1).

5. The rapid cooling box for lychees according to claim 1, characterized in that: Anti-slip pads (6) are fixedly connected to the four corners of the bottom of the bearing plate (1), and the bottom of the multiple anti-slip pads (6) adopts a toothed corrugated design.

6. The rapid cooling box for lychees according to claim 1, characterized in that: Rubber heat-insulating handles (7) are fixedly connected to the top of the left and right sides of the vent box (2), and the exterior of the two rubber heat-insulating handles (7) are both made of frosted material.

7. The rapid cooling box for lychees according to claim 1, characterized in that: The top of the support plate (1) has a limiting groove (8), and the internal dimensions of the limiting groove (8) match the bottom dimensions of the vent box (2).

8. The rapid cooling box for lychees according to claim 1, characterized in that: The top outer sides of the multiple mesh frames (3) are designed with an outward tilt angle, and the inner sides of the multiple mesh frames (3) are designed with an arc shape.

Images