Fruit and vegetable packaging box

Abstract

The utility model relates to a fruit and vegetable packing box, including heat preservation box body, heating element and water absorption spare, heat preservation box body includes box body and lid, the accommodation cavity with the opening of one side is formed in the box body, the lid is detachably covered in the opening of box body to close the accommodation cavity, the bottom of box body is provided with the air hole through to the bottom of accommodation cavity, heating element and water absorption spare are located in the bottom of accommodation cavity. The fruit and vegetable packing box provided in the application, through the combination packing mode that sets up heating element, water absorption spare and the air hole of box body accommodation cavity bottom in the packing box body, guarantees the temperature and humidity of fruit and vegetable products when being transported to the high temperature area with larger temperature difference in the low temperature area, significantly reduces the fruit and vegetable product freeze damage rate.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging and logistics, and in particular to a fruit and vegetable packaging box. Background Technology

[0002] With the booming development of e-commerce and modern logistics, the cross-regional circulation of agricultural products and various commodities is becoming increasingly frequent. Especially during the transportation of seasonal fruits and vegetables, the problem of frost damage due to excessively low temperatures is common. For example, strawberries from Northeast China may suffer frost damage when transported to Hainan in winter due to the large temperature difference; while tropical fruits from Hainan may experience a decline in quality due to the cold climate when transported to the north. Furthermore, during the Spring Festival, the transportation of fruits and vegetables often results in damage due to low temperatures.

[0003] Currently, industry solutions to these problems primarily rely on insulation measures during transportation, such as temporary wrapping with materials like blankets and foam boxes. However, these methods have significant limitations: firstly, their insulation effect is limited, making it difficult to maintain a suitable temperature for extended periods in extreme cold environments; secondly, sorting and loading / unloading stages in logistics often lack effective temperature protection measures, potentially causing goods to suffer frost damage at multiple transit points. Furthermore, existing insulation methods typically cannot simultaneously control both temperature and humidity, easily leading to dehydration or condensation in fruits and vegetables, affecting product quality.

[0004] In existing technologies, some cold chain transportation solutions utilize temperature-controlled boxes or refrigerated trucks, but these devices are costly and unsuitable for the low-cost transportation needs of ordinary agricultural products. While traditional foam boxes offer some insulation, they are still insufficient to prevent freezing damage during long-distance transport or in extreme weather conditions. Therefore, the market urgently needs a cost-effective, easy-to-use, and adaptable antifreeze packaging solution that can adapt to different transportation stages to meet the protection needs of fruits and vegetables in winter logistics. Utility Model Content

[0005] Therefore, it is necessary to provide a fruit and vegetable packaging box that combines heating elements, water-absorbing elements, and air holes at the bottom of the box's accommodating cavity to ensure the temperature and humidity of fruit and vegetable products when transported from low-temperature regions to high-temperature regions with large temperature differences, thereby significantly reducing the freezing damage rate of fruit and vegetable products.

[0006] An embodiment of this utility model provides a fruit and vegetable packaging box, including an insulated box body, a heating element, and a water-absorbing element. The insulated box body includes a box body and a lid. A receiving cavity with an opening on one side is formed in the box body. The lid is detachably covered on the opening of the box body to close the receiving cavity. An air hole is opened at the bottom of the box body and extends to the bottom of the receiving cavity. The heating element and the water-absorbing element are located at the bottom of the receiving cavity.

[0007] The fruit and vegetable packaging box provided in this application features a sealed box and lid combination that effectively isolates the box from external low temperatures and prevents cold air from entering. The bottom vent design ensures adequate ventilation, providing oxygen to the heating element and preventing moisture buildup or excessive carbon dioxide concentration. The heating element, located at the bottom of the enclosure, continuously releases gentle heat, maintaining a suitable temperature inside the box in frigid environments and preventing frost damage to fruits and vegetables. This design ensures proper temperature and humidity control for fruits and vegetables when transported from low-temperature regions to high-temperature regions with significant temperature differences, significantly reducing the freezing loss rate of fruits and vegetables.

[0008] In one embodiment, the absorbent element is laid at the bottom of the accommodating cavity, and the heating element is laid on the side of the absorbent element opposite to the bottom of the accommodating cavity.

[0009] In one embodiment, the absorbent element covers the air hole.

[0010] In one embodiment, the heating element is located directly above the vent.

[0011] In one embodiment, there are multiple absorbent elements, which are laid at the bottom of the accommodating cavity.

[0012] In one embodiment, the plurality of absorbent elements avoid the air hole, and the heating element is disposed above the air hole; or, the absorbent elements and the heating element avoid the air hole so that the air hole communicates with the receiving cavity.

[0013] In one embodiment, the vent is one or more combinations of round holes, square holes, and strip holes, and / or the vent is located in the bottom central region of the insulation box.

[0014] In one embodiment, the vent is a circular hole with a diameter of 6 mm to 14 mm;

[0015] Alternatively, the vent is a square hole, and the maximum diameter of the square hole is 6mm to 14mm;

[0016] Alternatively, the pores may be strip-shaped, with a length of 6 mm to 14 mm and a width of 3 mm to 7 mm.

[0017] In one embodiment, a refrigerant is also included, which is disposed on the sidewalls and / or top of the accommodating cavity.

[0018] In one embodiment, the heating element includes a heat pack, the absorbent element includes eight absorbent sheets, and the refrigerant includes eight ice packs. Each absorbent sheet is laid flat on the bottom of the cavity. The heat pack is located on the side of the absorbent sheet away from the bottom of the cavity and facing the air hole. Six ice packs are located on the side wall of the cavity, and two ice packs are located on the top of the cavity. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 A schematic diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in an embodiment of this application;

[0021] Figure 2 A schematic diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in an embodiment of this application;

[0022] Figure 3 A schematic diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in an embodiment of this application;

[0023] Figure 4 This is a partial structural schematic diagram of a fruit and vegetable packaging box provided in one embodiment of this application.

[0024] Reference numerals: 10 for insulated box; 11 for accommodating cavity; 12 for bottom; 13 for box body; 20 for heating element; 30 for water absorption element; 40 for air vent. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] With the booming development of e-commerce and modern logistics, the cross-regional circulation of agricultural products and various commodities is becoming increasingly frequent. Especially during the transportation of seasonal fruits and vegetables, the problem of frost damage due to excessively low temperatures is common. For example, strawberries from Northeast China may suffer frost damage when transported to Hainan in winter due to the large temperature difference; while tropical fruits from Hainan may experience a decline in quality due to the cold climate when transported to the north. Furthermore, during the Spring Festival, the transportation of fruits and vegetables often results in damage due to low temperatures.

[0030] Currently, industry solutions to these problems primarily rely on insulation measures during transportation, such as temporary wrapping with materials like blankets and foam boxes. However, these methods have significant limitations: firstly, their insulation effect is limited, making it difficult to maintain a suitable temperature for extended periods in extreme cold environments; secondly, sorting and loading / unloading stages in logistics often lack effective temperature protection measures, potentially causing goods to suffer frost damage at multiple transit points. Furthermore, existing insulation methods typically cannot simultaneously control both temperature and humidity, easily leading to dehydration or condensation in fruits and vegetables, affecting product quality.

[0031] In existing technologies, some cold chain transportation solutions utilize temperature-controlled boxes or refrigerated trucks, but these devices are costly and unsuitable for the low-cost transportation needs of ordinary agricultural products. While traditional foam boxes offer some insulation, they lack active temperature control and cannot effectively prevent freezing damage during long-distance transportation or in extreme weather conditions. Therefore, the market urgently needs a cost-effective, easy-to-use, and adaptable antifreeze packaging solution that can adapt to different transportation stages to meet the protection needs of fruits and vegetables in winter logistics.

[0032] In this regard, refer to Figures 1 to 4 This application relates to the technical field of packaging and logistics, and is applicable to the transportation of fruit and vegetable products from low-temperature areas to high-temperature areas with large temperature differences. Figure 1 This is a schematic diagram of the structure of the bottom 12 of the receiving cavity 11 of a fruit and vegetable packaging box provided in an embodiment of this application. An air hole 40 is provided on the side of the bottom 12 of the box body near the receiving cavity 11. Figure 2 This is a schematic diagram of the structure of the bottom 12 of the accommodating cavity 11 of a fruit and vegetable packaging box provided in an embodiment of this application. A water-absorbing component 30 in a moist state is laid on the air hole 40 on the side of the bottom 12 of the box near the accommodating cavity 11. Figure 3 This is a schematic diagram of the structure of the bottom 12 of the accommodating cavity 11 of a fruit and vegetable packaging box provided in an embodiment of this application. A water-absorbing component 30 in a wet state is laid on the air hole 40 on the side of the bottom 12 of the box near the accommodating cavity 11, and a heating component 20 is provided on the water-absorbing component 30. Figure 4 This is a partial structural diagram of a fruit and vegetable packaging box provided in an embodiment of this application. A refrigerant is provided on the inner wall of the receiving cavity. This embodiment of the application provides a fruit and vegetable packaging box, including an insulated box body 10, a heating element 20, and a water-absorbing element 30. The insulated box body 10 includes a box body 13 and a lid. A receiving cavity 11 is formed in the box body 13. The lid is detachably placed on the box body 13 to close the receiving cavity 11. An air hole 40 is provided at the bottom 12 of the box body 13, penetrating to the bottom 12 of the receiving cavity 11. The heating element 20 and the water-absorbing element 30 are located at the bottom 12 of the receiving cavity 11.

[0033] The fruit and vegetable packaging box includes an insulated box body 10, a heating element 20, and a water-absorbing element 30. The insulated box body 10 can be a foam box. In some embodiments, the insulated box body 10 can be a rectangular foam box. The insulated box body 10 includes a box body 13 and a lid, which can provide a good seal. The foam box can be made of polystyrene or other foamed materials, and its interior is filled with a large number of independent closed microbubbles. These pores 40 form a honeycomb structure. The closed pores 40 can block airflow. The thermal conductivity of the plastic matrix is ​​much lower than that of cardboard. Usually, the white foam surface can reflect heat radiation. Therefore, the foam box is suitable for cold chain transportation that requires temperature control, and can significantly reduce cold loss compared to cardboard boxes. A receiving cavity 11 is formed inside the box body 13. The size of the receiving cavity 11 can be set according to needs. The receiving cavity 11 can accommodate various fruits and vegetables being transported. The size and shape of the lid and the box body 13 are matched. The matching lid can be detachably placed on the box body 13 to seal the receiving cavity 11. In some embodiments, when the cover is placed on the insulation box 10, the cover can be fixed to the insulation box 10 with transparent tape to increase the seal between the insulation box 10 and the cover, so as to ensure that the internal environment of the insulation box 10 is not affected by the external temperature.

[0034] In some embodiments, the bottom 12 of the box body 13 has an air hole 40 extending through to the bottom 12 of the accommodating cavity 11. The through air hole 40 ensures air circulation without affecting the heat preservation effect. A heating element 20 is provided in the bottom 12 area of ​​the accommodating cavity 11. The heating element 20 can continuously and stably release heat, providing warmth and protection for fruits and vegetables in cold environments. Simultaneously, the air hole 40 design at the bottom 12 of the box body promotes air circulation, prevents heat accumulation or moisture retention, and avoids excessive carbon dioxide concentration in a sealed environment, which could lead to spoilage of fruits and vegetables. In some embodiments, the heating element 20 can be a heat pack, for example, a pet-specific heat pack with a heating duration of 110 hours. The heat pack is filled with special iron powder, which undergoes an oxidation reaction upon contact with oxygen in the air, continuously and stably releasing heat during the chemical reaction process. Users only need to unpack and preheat the insulated box 10 30 minutes before packaging. During the above chemical reaction process, the vents 40 at the bottom 12 of the box 13 can continuously provide oxygen to the insulated box 10 to ensure that the heat pack can work normally. In this way, when transporting from a low-temperature area to a high-temperature area with a large temperature difference, the temperature inside the insulated box 10 can be guaranteed.

[0035] To ensure the temperature and humidity of fruits and vegetables transported from low-temperature regions to high-temperature regions with large temperature differences, a water-absorbing component 30 is also provided at the bottom 12 of the fruit and vegetable packaging box. In some embodiments, the water-absorbing component 30 is in a moist state, which can effectively balance the humidity inside the insulated box 10, preventing fruits and vegetables from dehydrating due to excessively low humidity or condensing and moldy due to excessively high humidity. The combination of the water-absorbing component 30 and the heating element 20 can also regulate the local microenvironment through water evaporation, further improving the preservation effect. By combining the heating element 20, the water-absorbing component 30, and the air holes 40 at the bottom 12 of the box's accommodating cavity, the temperature and humidity of fruits and vegetables transported from low-temperature regions to high-temperature regions with large temperature differences are ensured, significantly reducing the freezing loss rate of fruits and vegetables. Unlike traditional insulation measures that only address the transportation stage, this fruit and vegetable packaging box provides continuous protection throughout the entire logistics process, including sorting, transshipment, and temporary storage. Its modular design allows for flexible adjustment of the quantity and position of the refrigerant in the heating element 20 and water-absorbing element 30 according to the characteristics of the goods, making it suitable for various easily frozen fruits and vegetables such as strawberries and tropical fruits. Furthermore, the insulated box body 10, heating element 20, and water-absorbing element 30 used in the fruit and vegetable packaging box can utilize functional materials commonly used in express delivery, eliminating the need for customization and resulting in a significantly lower cost than professional cold chain equipment, making it applicable to a wider range of scenarios. In addition, the box body is reusable or recyclable, aligning with the trend of green packaging.

[0036] In some embodiments, the absorbent element 30 is covered with vents 40. The special fiber structure of the absorbent element 30 allows air to pass through slowly while effectively preventing excessive evaporation of moisture. When moisture inside the box comes into contact with the absorbent element 30, some water molecules are adsorbed and retained, while dry air can circulate naturally through the vents 40. The combination of the humidified absorbent element 30 and the vents 40 keeps the fruit and vegetable packaging box in a relatively balanced dynamic humidity state. Specifically, when the environment is dry, the humidified absorbent element 30 releases the stored moisture to prevent the fruits and vegetables from dehydrating; when the humidity is too high, excess moisture is absorbed by the absorbent element 30 to avoid condensation and water accumulation. The vents 40 always maintain moderate ventilation to prevent carbon dioxide accumulation. The special layout of the absorbent element 30 covering the vents 40 forms a three-dimensional protection. The upper layer provides basic temperature protection for the heating element 20, the middle layer is the humidified absorbent element 30 to maintain humidity balance, and the lower layer is the vents 40 to ensure necessary air exchange. In addition, the absorbent part 30 is covered with air holes 40, which can prevent external dust, impurities or small insects and other organisms from entering the box, thus providing a safety protection function.

[0037] The vents 40 are located in the central area of ​​the bottom 12 of the insulated box 10. The vents 40 allow for slow airflow. Specifically, the vents 40 can take various shapes, such as round holes, square holes, and strip-shaped holes, or a combination thereof. Round holes distribute pressure evenly around their perimeter, ensuring uniform airflow diffusion; square holes increase ventilation per unit area; and strip-shaped holes form directional airflow channels. The vents 40 can be a single shape or a combination of multiple shapes to meet different preservation needs. All the vents 40 are concentrated in the central area of ​​the bottom of the box, forming a central ventilation network. Airflow diffuses evenly from the center outwards, avoiding dead ventilation corners and maintaining consistent temperature and humidity throughout the box. In one embodiment, round holes 40 can be used for fragile fruits such as strawberries, providing gentle ventilation; square holes 40 are suitable for leafy vegetables and other products requiring high ventilation; strip-shaped holes 40 are suitable for root vegetables and other fruits and vegetables requiring directional dehumidification; and combined vent types are suitable for comprehensive preservation of mixed loads. Before transportation, users can select a suitable combination of pore types based on the characteristics of the goods to ensure that the area of ​​the pores 40 is not blocked by the padding material or the goods. Fine-tuning can also be made according to different transportation conditions. For example, in humid environments, the exposed area of ​​the pores 40 can be appropriately reduced, and in extremely cold environments, some of the pores 40 can be temporarily covered.

[0038] To ensure a suitable preservation environment for fruits and vegetables, the vent 40 is configured as follows: When the vent 40 is a round hole, the diameter is 6mm to 14mm; when the vent 40 is a square hole, the maximum diameter is 6mm to 14mm; when the vent 40 is a strip-shaped hole, the length is 6mm to 14mm and the width is 3mm to 7mm. The vent 40 configuration ensures sufficient fresh air exchange while effectively preventing the rapid intrusion of cold air. It maintains a stable microclimate within the enclosure, preventing insects and other organisms from entering. For example, when the vent 40 is a round hole, a 3mm to 5mm vent 40 provides basic ventilation, maintaining minimum air exchange requirements; a larger 5mm to 7mm vent enhances airflow, accommodating products with high respiration rates. Preferably, the vent 40 uses a round hole with a radius of 5mm, which effectively promotes air circulation, prevents heat accumulation or moisture retention, and avoids excessive carbon dioxide concentration in a sealed environment that could lead to spoilage of fruits and vegetables.

[0039] In some embodiments, the heating element 20 is located directly above the air vent 40. The warm air generated by the heating element rises naturally, and the air vent 40 below continuously replenishes fresh air, forming a stable vertical thermal convection circulation so that the heat is evenly diffused throughout the entire chamber space, resulting in a better temperature distribution. Specifically, the upper area maintains a suitable storage temperature for fruits and vegetables, the middle area buffers temperature fluctuations, and the bottom 12 area adjusts the ventilation through the air vent 40.

[0040] In some embodiments, multiple absorbent elements 30 are arranged at the bottom 12 of the accommodating cavity 11. When transporting the same type of fruits and vegetables, multiple absorbent elements 30 can provide stable temperature and humidity control. When the fruit and vegetable packaging box transports multiple types of fruits and vegetables in mixed shipments, the configuration of multiple absorbent elements 30 can provide precise humidity control for different types of fruits and vegetables. For example, the density of the absorbent elements can be adjusted according to the type of fruits and vegetables to achieve differentiated humidity management in different areas of the box. Damaged individual absorbent elements 30 can be quickly replaced without affecting the overall structure.

[0041] In one embodiment, multiple absorbent components 30 are arranged to avoid the air vents 40. For example, the absorbent components 30 are distributed in a dispersed manner, actively avoiding the area of ​​the air vents 40 when laid on the bottom of the box, forming a surrounding distribution. The absorbent components 30 do not cover the air vents 40, allowing the air vents to directly contact the heating element 20. The heating element 20 is placed above the air vents 40. The multiple absorbent components 30 form multiple independent moisturizing units on the bottom of the box, while leaving a smooth ventilation channel for the central air vent 40. The heating element 20 covers the central air vent 40, forming thermal convection. The rising warm airflow drives the air circulation inside the box, and the 12 air vents 40 at the bottom continuously replenish fresh air, achieving active ventilation and temperature balance. At the same time, the peripherally distributed absorbent components 30 maintain local humidity stability and avoid dehydration caused by ventilation. In another embodiment, the water-absorbing component 30 and the heating component 20 are arranged to avoid the air vents 40. During installation, a clear space is actively reserved for the air vents 40 to ensure that the air vents are always in direct communication with the receiving cavity. For example, the water-absorbing component 30 adopts a segmented or ring-shaped layout, precisely avoiding the location of the air vents 40 during installation. The heating component 20 is offset and installed above the water-absorbing component, forming a misaligned relationship with the air vents 40. This arrangement allows the air vents 40 to communicate with the receiving cavity 11. Both the water-absorbing component 30 and the heating component 20 adopt an avoidance design to ensure that the air vents 40 are fully open, forming a natural air convection path. Cold air flows in naturally from the bottom 12 air vents 40, achieving continuous ventilation. For temperature-sensitive fruits and vegetables, the first embodiment can be used to obtain stable heating; for fruits and vegetables with high ventilation requirements, the second embodiment can be used to ensure sufficient ventilation.

[0042] In some implementations, the fruit and vegetable packaging box also includes refrigerant. The refrigerant can be placed on the inner side of the box, on top of the items being stored, or a combination of both. Placing it on the side wall creates a surrounding low-temperature zone, while placing it on the top creates a downward-flowing cold air circulation. Combined arrangements achieve three-dimensional temperature control coverage. The refrigerant provides a better preservation environment for fruits and vegetables. Users can choose the refrigerant installation location based on the characteristics of the goods and the ambient temperature, ensuring that the refrigerant maintains an appropriate distance from the product. Specifically, the refrigerant can be a 250g white, unfrozen tap water ice pack. Many fruits and vegetables have a freezing point of 3-4 degrees Celsius, while the ice pack's freezing point is 0 degrees Celsius. Therefore, using an unfrozen ice pack allows the unfrozen ice pack to freeze first if the temperature inside the insulated box drops in low ambient temperatures, thus reducing the risk of frostbite to the fruits and vegetables.

[0043] In one embodiment, the heating element 20 includes a heat pack, the absorbent element 30 includes eight absorbent sheets, and the refrigerant includes four ice packs. Each absorbent sheet is laid flat at the bottom of the cavity 11. The heat pack is located on the side of the absorbent sheet facing away from the bottom 12 of the cavity 11 and directly opposite the air vent 40. The four ice packs are positioned around the perimeter of the cavity 11. A 5mm radius circular hole is formed in the center of the bottom 12 of the S4 model foam box. Specifically, the fruit and vegetable packaging box configuration includes a 3mm thick insulation bag, an S4 model foam box (as the insulation box body 10), a heat pack (as the heating element 20), two layers of bubble wrap, eight absorbent sheets, and four ice packs (as the refrigerant), with the ice packs placed around the perimeter of the foam box.

[0044] In another embodiment, the heating element 20 includes a heat pack, the absorbent element 30 includes eight absorbent sheets, and the refrigerant includes four ice packs. Each absorbent sheet is laid flat at the bottom of the cavity 11. The heat pack is located on the side of the absorbent sheet facing away from the bottom 12 of the cavity 11 and directly opposite the air vent 40. The four ice packs are placed on the top of the cavity 11. A circular hole with a radius of 5mm is opened in the middle of the bottom 12 of the S4 model foam box. Specifically, the fruit and vegetable packaging box configuration includes a 3mm thick insulation bag, an S4 model foam box (as the insulation box body 10), a heat pack (as the heating element 20), two layers of bubble wrap, eight absorbent sheets, and four ice packs. All four ice packs are placed on the top of the foam box. Placing ice packs on top can improve the cooling effect to some extent. The natural sinking characteristic of cold air may help create a certain temperature gradient, making the upper part of the box cooler and the lower part slightly warmer, thereby preventing strawberries from being damaged by excessive cold.

[0045] In another embodiment, the heating element 20 includes a heat pack, the absorbent element 30 includes eight absorbent sheets, and the refrigerant includes eight ice packs. Each absorbent sheet is laid flat at the bottom of the cavity 11. The heat pack is located on the side of the absorbent sheet opposite to the bottom 12 of the cavity 11 and facing the air vent 40. Six ice packs are placed on the sidewalls of the cavity 11, and two ice packs are placed on the top of the cavity 11. Preferably, the fruit and vegetable packaging box configuration includes a 3mm thick insulated bag, an S4 model foam box (as the insulated box body 10), a heat pack (as the heating element 20), a layer of bubble wrap, eight absorbent sheets, and eight ice packs (as the refrigerant), with six ice packs placed on the sides and two ice packs placed on the top. The high-density ice pack distribution ensures uniform coverage of the cold air; the side ice packs form a surrounding cooling effect, and the top ice pack helps stabilize the overall temperature, thereby effectively inhibiting the respiration and microbial growth of the strawberries. In addition, the single layer of bubble wrap provides cushioning inside the box while preventing excessive insulation from causing temperature rise, thus further optimizing the internal environment.

[0046] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fruit and vegetable packaging box, characterized in that, The device includes an insulated box, a heating element, and a water-absorbing element. The insulated box includes a box body and a cover. The box body forms a receiving cavity with an opening on one side. The cover is detachably placed over the opening of the box body to close the receiving cavity. The bottom of the box body has an air hole that extends to the bottom of the receiving cavity. The heating element and the water-absorbing element are located at the bottom of the receiving cavity.

2. The fruit and vegetable packaging box according to claim 1, characterized in that, The absorbent element is laid at the bottom of the accommodating cavity, and the heating element is laid on the side of the absorbent element away from the bottom of the accommodating cavity.

3. The fruit and vegetable packaging box according to claim 2, characterized in that, The absorbent element is covered with the air hole.

4. The fruit and vegetable packaging box according to claim 2, characterized in that, The heating element is located directly above the air hole.

5. The fruit and vegetable packaging box according to claim 4, characterized in that, The number of absorbent elements is multiple, and the multiple absorbent elements are laid at the bottom of the accommodating cavity.

6. The fruit and vegetable packaging box according to claim 5, characterized in that, The plurality of absorbent elements avoid the air vents, and the heating element is positioned above the air vents; or, the absorbent elements and the heating element avoid the air vents so that the air vents communicate with the accommodating cavity.

7. The fruit and vegetable packaging box according to claim 1, characterized in that, The vent is one or more of the following: round hole, square hole, strip hole, and / or the vent is located in the bottom center area of ​​the insulation box.

8. The fruit and vegetable packaging box according to claim 7, characterized in that, The vent is a round hole with a diameter of 6 mm to 14 mm; Alternatively, the vent is a square hole, and the maximum diameter of the square hole is 6mm to 14mm; Alternatively, the pores may be strip-shaped, with a length of 6 mm to 14 mm and a width of 3 mm to 7 mm.

9. The fruit and vegetable packaging box according to claim 1, characterized in that, It also includes a refrigerant, which is disposed on the sidewalls and / or top of the accommodating cavity.

10. The fruit and vegetable packaging box according to claim 9, characterized in that, The heating element includes one heat pack, the absorbent element includes eight absorbent sheets, and the refrigerant includes eight ice packs. Each absorbent sheet is laid flat on the bottom of the cavity. The heat pack is located on the side of the absorbent sheet away from the bottom of the cavity and facing the air hole. Six ice packs are located on the side wall of the cavity, and two ice packs are located on the top of the cavity.

Images