Fruit and vegetable packaging box and fruit and vegetable packaging method

Abstract

The invention relates to a fruit and vegetable packaging box and a fruit and vegetable packaging method.The fruit and vegetable packaging box comprises a heat preservation box body, a heating part and a water absorption part, the heat preservation box body comprises a box body and a cover body, a containing cavity with an opening in one side is formed in the box body, and the cover body detachably covers the opening of the box body to seal the containing cavity; the bottom of the box body is provided with an air hole penetrating to the bottom of the containing cavity, and the heating piece and the water absorption piece are arranged at the bottom of the containing cavity. According to the fruit and vegetable packaging box and the fruit and vegetable packaging method, through the combined packaging mode that the heating piece, the water absorption piece and the air holes in the bottom of the containing cavity of the box body are arranged in the packaging box body, the temperature and humidity of fruit and vegetable products are guaranteed when the fruit and vegetable products are conveyed to a high-temperature area with the large temperature difference in a low-temperature area, and the freezing damage rate of the fruit and vegetable products is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging and logistics, and in particular to a fruit and vegetable packaging box and a fruit and vegetable packaging method. Background Art

[0002] With the booming development of e-commerce and modern logistics, cross-regional circulation of agricultural products and various commodities is becoming increasingly frequent. The transportation of seasonal fruits and vegetables, in particular, often faces the problem of freezing damage due to low ambient temperatures. For example, strawberries from Northeast China can suffer frostbite when shipped to Hainan during winter due to the significant temperature difference; tropical fruits from Hainan can also suffer quality degradation when shipped north due to the cold weather. Furthermore, fruit and vegetable products often suffer damage during transportation during the Spring Festival due to low temperatures.

[0003] Currently, the industry's solution to this problem primarily relies on insulation measures during transportation, such as using quilts, foam boxes, and other materials for temporary wrapping. However, these methods have significant limitations: on the one hand, the insulation effect is limited, making it difficult to maintain a suitable temperature for extended periods in extremely low-temperature environments; on the other hand, the sorting, loading and unloading processes in the logistics process often lack effective temperature protection measures, resulting in products potentially suffering from frost damage during multiple transit links. Furthermore, existing insulation methods are generally unable to simultaneously regulate both temperature and humidity, which can easily cause fruits and vegetables to dehydrate or condense, affecting product quality.

[0004] Some existing cold chain transportation solutions utilize constant-temperature boxes or refrigerated trucks, but these devices are relatively expensive and unsuitable for the low-cost transportation of common agricultural products. Traditional foam boxes, while providing some insulation, are ineffective in preventing freeze damage during long transport periods or in extreme weather conditions. Therefore, the market urgently needs a cost-effective, user-friendly, and adaptable antifreeze packaging solution to meet the winter logistics needs of fruits and vegetables. Summary of the Invention

[0005] Based on this, it is necessary to provide a fruit and vegetable packaging box and a fruit and vegetable packaging method. By arranging a heating element, a water-absorbing element and air holes at the bottom of the box cavity in the packaging box, the temperature and humidity of fruit and vegetable products are ensured when they are transported from low-temperature areas to high-temperature areas with large temperature differences, thereby significantly reducing the freezing damage rate of fruit and vegetable products.

[0006] An embodiment of the present invention provides a fruit and vegetable packaging box, comprising an insulated box body, a heating element, and a water absorbing element. The insulated box body comprises a box body and a cover body. A receiving cavity with an opening on one side is formed in the box body. The cover body is detachably covered on the opening of the box body to seal the receiving cavity. An air hole is formed at the bottom of the box body extending through the bottom of the receiving cavity. The heating element and the water absorbing element are arranged at the bottom of the receiving cavity.

[0007] In one embodiment, the water absorbing member is laid on the bottom of the accommodating cavity, and the heating member is laid on a side of the water absorbing member away from the bottom of the accommodating cavity.

[0008] In one embodiment, the water absorbing member covers the air hole.

[0009] In one embodiment, the heating element is located directly above the air hole.

[0010] In one embodiment, there are multiple water absorbent members, and the multiple water absorbent members are laid on the bottom of the accommodating cavity.

[0011] In one embodiment, the plurality of water absorbing members avoid the air holes, and the heating member covers the air holes; or, the water absorbing members and the heating member avoid the air holes, so that the air holes are connected to the accommodating cavity.

[0012] In one embodiment, the air holes are one or more combinations of circular holes, square holes, and strip holes, and / or the air holes are located in the bottom center area of ​​the thermal insulation box.

[0013] In one embodiment, the air hole is a circular hole, and the diameter of the circular hole is 6 mm to 14 mm;

[0014] Alternatively, the air hole is a square hole, and the maximum diameter of the square hole is 6 mm to 14 mm;

[0015] Alternatively, the air holes are strip-shaped holes, the length of the strip-shaped holes is 6 mm to 14 mm, and the width of the strip-shaped holes is 3 mm to 7 mm.

[0016] In one embodiment, a refrigerant is further included, and the refrigerant is disposed on the side wall and / or the top of the accommodating cavity.

[0017] A method for packaging fruit and vegetables, comprising:

[0018] S1: Obtain a heat-insulating box having an air hole at the bottom, the heat-insulating box comprising a box body, a receiving cavity formed in the box body, and the air hole extending to the bottom of the receiving cavity;

[0019] S2: absorbing water from the water absorbing member until it is saturated and no water is dripping, and laying the water absorbing member on the bottom of the accommodating cavity;

[0020] S3: Laying a heating element above the water absorbing element so that the heating element is located above the air hole;

[0021] S4: placing the object to be stored in the accommodating cavity;

[0022] S5: placing a refrigerant on the wall of the accommodating cavity and / or the object to be stored.

[0023] The fruit and vegetable packaging box and method provided in this application utilizes a sealed box and lid combination for its insulated housing, effectively isolating the outside world from low temperatures and preventing cold air intrusion. The air holes at the bottom ensure adequate ventilation, providing oxygen to the heating element and preventing moisture accumulation or excessive carbon dioxide concentrations. The heating element, located at the bottom of the chamber, continuously releases gentle heat, maintaining a suitable temperature within the box in severe cold conditions and preventing frostbite on fruits and vegetables. This ensures consistent temperature and humidity when transporting fruit and vegetable products from low-temperature areas to high-temperature areas with large temperature differences, significantly reducing the freeze-damage rate of fruit and vegetable products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 This is a schematic structural diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in one embodiment of the present application;

[0026] Figure 2 This is a schematic structural diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in one embodiment of the present application;

[0027] Figure 3 This is a schematic structural diagram of the bottom of the accommodating cavity of a fruit and vegetable packaging box provided in one embodiment of the present application;

[0028] Figure 4 This is a partial structural diagram of a fruit and vegetable packaging box provided in one embodiment of the present application.

[0029] Reference numerals: heat-insulating box body 10 ; accommodating cavity 11 ; bottom 12 ; box body 13 ; heating element 20 ; water absorbing element 30 ; air hole 40 . DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] With the booming development of e-commerce and modern logistics, cross-regional circulation of agricultural products and various commodities is becoming increasingly frequent. The transportation of seasonal fruits and vegetables, in particular, often faces the problem of freezing damage due to low ambient temperatures. For example, strawberries from Northeast China can suffer frostbite when shipped to Hainan during winter due to the significant temperature difference; tropical fruits from Hainan can also suffer quality degradation when shipped north due to the cold weather. Furthermore, fruit and vegetable products often suffer damage during transportation during the Spring Festival due to low temperatures.

[0035] Currently, the industry's solution to this problem primarily relies on insulation measures during transportation, such as using quilts, foam boxes, and other materials for temporary wrapping. However, these methods have significant limitations: on the one hand, the insulation effect is limited, making it difficult to maintain a suitable temperature for extended periods in extremely low-temperature environments; on the other hand, the sorting, loading and unloading processes in the logistics process often lack effective temperature protection measures, resulting in products potentially suffering from frost damage during multiple transit links. Furthermore, existing insulation methods are generally unable to simultaneously regulate both temperature and humidity, which can easily cause fruits and vegetables to dehydrate or condense, affecting product quality.

[0036] Some existing cold chain transportation solutions utilize constant-temperature boxes or refrigerated trucks, but these devices are relatively expensive and unsuitable for the low-cost transportation of common agricultural products. Traditional foam boxes, while offering some insulation, lack active temperature control and are unable to effectively prevent freeze damage during long transport periods or in extreme weather conditions. Therefore, the market urgently needs a cost-effective, user-friendly, and adaptable antifreeze packaging solution to meet the winter logistics needs of fruit and vegetable products.

[0037] In this regard, refer to Figures 1 to 4 This application relates to the technical field of packaging and logistics, and is suitable for transporting fruit and vegetable products from low-temperature areas to high-temperature areas with large temperature differences. Figure 1 This is a structural diagram of the bottom 12 of the accommodating cavity 11 of a fruit and vegetable packaging box provided in one embodiment of the present application. An air hole 40 is provided on the bottom 12 of the box body near the accommodating cavity 11. Figure 2 This is a structural diagram of the bottom 12 of the accommodating cavity 11 of a fruit and vegetable packaging box provided in one embodiment of the present application. The air holes 40 on the bottom 12 of the box body close to the accommodating cavity 11 are covered with a water absorbing member 30 in a wet state. Figure 3 This is a schematic structural diagram of the bottom 12 of the accommodating chamber 11 of a fruit and vegetable packaging box according to an embodiment of the present application. A water-absorbing member 30 in a moistened state is provided on the air holes 40 on one side of the accommodating chamber 11 at the bottom 12 of the box, and a heating element 20 is provided on the water-absorbing member 30. Figure 4 This is a partial structural diagram of a fruit and vegetable packaging box provided in one embodiment of the present application, in which a refrigerant is provided on the inner wall of the accommodating chamber. This embodiment of the present application provides a fruit and vegetable packaging box, comprising an insulated box body 10, a heating element 20, and a water-absorbing element 30. The insulated box body 10 comprises a box body 13 and a lid. The box body 13 defines an accommodating chamber 11. The lid detachably covers the box body 13 to seal the accommodating chamber 11. The bottom 12 of the box body 13 is provided with an air hole 40 extending through the bottom 12 of the accommodating chamber 11. The heating element 20 and the water-absorbing element 30 are disposed at the bottom 12 of the accommodating chamber 11.

[0038] The fruit and vegetable packaging box includes an insulating box body 10, a heating element 20 and a water-absorbing element 30. The insulating box body 10 can be a foam box. In some embodiments, the insulating box body 10 can be a rectangular foam box. The insulating box body 10 includes a box body 13 and a cover body. The box body 13 and the cover body can be well sealed. The foam box can be made of a foam material such as polystyrene. The interior of the foam box is filled with a large number of independent closed microbubbles. These pores 40 form a honeycomb structure. The closed pores 40 can block air flow. The thermal conductivity of the plastic matrix is ​​extremely small compared to cardboard. Usually, the white bubble 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 accommodating cavity 11 is formed inside the box body 13. The size of the accommodating cavity 11 can be set according to demand. The accommodating cavity 11 can accommodate various types of fruit and vegetable products for transportation. The size and shape of the cover body and the box body 13 are adapted. The matching cover body is detachable and is placed on the box body 13 to seal the accommodating cavity 11. In some embodiments, when the cover is installed on the insulation box 10, the cover can be fixed to the insulation box 10 by transparent tape to increase the sealing between the insulation box 10 and the cover to ensure that the internal environment of the insulation box 10 is not affected by the external temperature.

[0039] In some embodiments, the bottom 12 of the box body 13 is provided with air holes 40 that penetrate to the bottom 12 of the accommodating cavity 11. The through-type air holes 40 ensure air circulation without affecting the heat preservation effect. In the bottom 12 area of ​​the accommodating cavity 11, a heating element 20 is provided. The heating element 20 can release heat continuously and stably, providing warm protection for fruit and vegetable products in a severe cold environment; at the same time, the air holes 40 at the bottom 12 of the box body are designed to promote air circulation, prevent heat accumulation or moisture retention, and avoid excessive carbon dioxide concentration in a sealed environment that causes the fruit and vegetables to deteriorate. In some embodiments, the heating element 20 can be a heating patch. For example, a pet version heating patch can be used. The heating time is selected to be 110 hours. The heating patch is filled with special iron powder, which undergoes an oxidation reaction when in contact with oxygen in the air, and continuously and stably releases heat during the chemical reaction process. The user only needs to unpack and preheat the insulation box 10 30 minutes before packaging. During the above-mentioned chemical reaction process, the air holes 40 at the bottom 12 of the box body 13 can continuously provide oxygen to the insulation box 10 to ensure that the heating pad can work normally, and then ensure the temperature inside the insulation box 10 when transporting it from a low-temperature area to a high-temperature area with a large temperature difference.

[0040] In order to ensure the temperature and humidity of fruit and vegetable products when they are transported from low-temperature areas to high-temperature areas with large temperature differences, a water-absorbing member 30 is also provided at the bottom 12 of the fruit and vegetable packaging box. In some embodiments, the water-absorbing member 30 is in a moist state, and the water-absorbing member 30 can effectively balance the humidity within the insulation box 10, preventing fruits and vegetables from dehydrating due to low humidity or condensing and mildewing due to high humidity. The cooperation between the water-absorbing member 30 and the heating element 20 can also regulate the local microenvironment through water evaporation, further improving the preservation effect. By providing a combined packaging method of the heating element 20, the water-absorbing member 30, and the air holes 40 at the bottom 12 of the box cavity 11 within the packaging box, the temperature and humidity of fruit and vegetable products when they are transported from low-temperature areas to high-temperature areas with large temperature differences are ensured, significantly reducing the freeze damage rate of fruit and vegetable products. Unlike traditional insulation measures that only protect against heat during transportation, this fruit and vegetable packaging box provides continuous protection throughout the entire logistics process, including sorting, transit, and temporary storage. Its modular design allows for flexible adjustment of the quantity and location of the heating element 20 and the water-absorbing element 30 based on the product's characteristics, making it suitable for a variety of easily frozen fruits and vegetables, such as strawberries and tropical fruits. Furthermore, the insulation box 10, heating element 20, and water-absorbing element 30 can be made of functional materials commonly used in express delivery, eliminating the need for customization. This significantly reduces the cost of specialized cold chain equipment and allows for a wide range of applications. Furthermore, the box is reusable or recyclable, aligning with the trend toward green packaging.

[0041] In some embodiments, the absorbent element 30 is covered with air holes 40. The special fiber structure of the absorbent element 30 allows air to pass slowly while effectively preventing excessive evaporation. When moisture inside the box contacts the absorbent element 30, some water molecules are absorbed and retained, while dry air can naturally circulate through the air holes 40. The combination of the moist absorbent element 30 and the air holes 40 can maintain a relatively balanced dynamic humidity in the fruit and vegetable packaging box. Specifically, when the environment is dry, the moist absorbent element 30 releases stored moisture, preventing dehydration of the fruits and vegetables. When the humidity is too high, excess moisture is absorbed by the absorbent element 30, preventing condensation and accumulation. The air holes 40 maintain moderate ventilation at all times, preventing carbon dioxide accumulation. The special layout of the absorbent element 30 covering the air holes 40 creates a three-dimensional protective structure. The upper layer provides a basic temperature guarantee for the heating element 20, the middle layer is the moist absorbent element 30 to maintain humidity balance, and the lower layer is the air holes 40 to ensure necessary air exchange. In addition, the water absorbing member 30 is covered with air holes 40 to prevent external dust, impurities or small insects and other organisms from entering the box, thus providing a safety protection function.

[0042] The air holes 40 are located in the center of the bottom 12 of the insulated box 10. The arrangement of the air holes 40 allows air to pass slowly. Specifically, the air holes 40 can take a variety of shapes, for example, the air holes 40 can be a combination of one or more of circular holes, square holes, and strip holes. Circular holes are evenly distributed around the edges, ensuring uniform airflow diffusion; square holes 40 can increase ventilation per unit area; and strip holes 40 can form directional airflow channels. The air holes 40 can take a single shape or a combination of multiple shapes to meet different preservation needs. All air holes 40 are concentrated in the center of the box bottom, forming a central ventilation network. Airflow is evenly diffused from the center to the surrounding area, avoiding ventilation dead spots within the box and maintaining consistent temperature and humidity at all locations. In one embodiment, circular air holes 40 can be used for delicate fruits such as strawberries to provide gentle ventilation; square air holes 40 are suitable for leafy vegetables that require extensive ventilation; and strip holes 40 are suitable for root vegetables that require directional dehumidification. A combination of hole shapes can be used for comprehensive preservation of mixed loads. Before transport, users can select the appropriate hole pattern combination based on the characteristics of the cargo, ensuring that the air holes 40 are not blocked by the bedding or cargo. Fine-tuning can also be performed based on different transport conditions. For example, in humid environments, the exposed area of ​​the air holes 40 can be appropriately reduced, while in extremely cold environments, some of the air holes 40 can be temporarily covered.

[0043] In order to ensure a suitable fresh-keeping environment for fruit and vegetable products, when the pores 40 are round holes, the diameter of the round holes is 6mm to 14mm; when the pores 40 are square holes, the maximum diameter of the square holes is 6mm to 14mm; when the pores 40 are strip holes, the length of the strip holes is 6mm to 14mm, and the width of the strip holes is 3mm to 7mm. The setting of the pores 40 can simultaneously ensure sufficient fresh air exchange and effectively prevent the rapid invasion of cold air. Maintain a stable microclimate in the box to prevent insects and other organisms from entering. For example, when the pores 40 are set as round holes, 3mm to 5mm pores 40 can achieve basic ventilation and maintain the minimum ventilation requirements; 5mm to 7mm large holes can enhance airflow and cope with high breathing intensity products. Preferably, the pores 40 use round holes with a radius of 5mm, which can better promote air circulation, prevent heat accumulation or moisture retention, and avoid excessive carbon dioxide concentration in a sealed environment that causes fruit and vegetables to deteriorate.

[0044] In some embodiments, the heating element 20 is located directly above the air hole 40. The warm air generated by the heating element rises naturally, and the air hole 40 below continuously replenishes fresh air to form a stable vertical heat convection cycle, so that the heat is evenly diffused throughout the entire box space, and a better temperature distribution can be formed. 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 volume through the air hole 40.

[0045] In some embodiments, multiple absorbent members 30 are arranged on the bottom 12 of the accommodating chamber 11. When transporting the same type of fruit and vegetable products, these multiple absorbent members 30 can provide stable temperature and humidity. When transporting a mixed variety of fruits and vegetables in a fruit and vegetable packaging box, the multiple absorbent members 30 can provide precise humidity control for each type of fruit and vegetable. For example, the density of absorbent members 30 can be adjusted based on the type of fruit and vegetable, achieving differentiated humidity management for different areas within the box. Damaged individual absorbent members 30 can be quickly replaced without affecting the overall system.

[0046] In one embodiment, multiple water-absorbing members 30 are arranged to avoid the air holes 40. For example, the water-absorbing members 30 are arranged in a dispersed manner, and when laid on the bottom of the box, they actively avoid the area around the air holes 40, forming a surrounding distribution. The water-absorbing members 30 do not cover the air holes 40, so that the air holes are in direct contact with the heating element 20. The heating element 20 covers the air holes 40, and the multiple water-absorbing members 30 form multiple independent moisturizing units on the bottom of the box, while leaving a clear ventilation channel for the central air hole 40. The heating element 20 covers the central air hole 40, forming heat convection. The rising warm air flow drives the air circulation in the box, and the 12 air holes 40 at the bottom continuously replenish fresh air, achieving active ventilation and temperature balance. At the same time, the water-absorbing members 30 distributed around the periphery maintain local humidity stability to avoid dehydration caused by ventilation. In another embodiment, the water-absorbing component 30 and the heating component 20 are arranged to avoid the air holes 40. During installation, a clear space channel is actively reserved for the air holes 40 to ensure that the air holes are always directly connected to the accommodating cavity. For example, the water-absorbing component 30 adopts a segmented or annular layout, and when laid, it precisely avoids the location of the air holes 40. The heating component 20 is offset and installed above the water-absorbing component, forming a staggered relationship with the air holes 40. This arrangement enables the air holes 40 to communicate with the accommodating cavity 11. Both the water-absorbing component 30 and the heating component 20 adopt an avoidance design, ensuring that the air holes 40 are fully open, forming a natural air convection path, and cold air naturally flows into the air holes 40 from the bottom 12, achieving continuous ventilation. For temperature-sensitive fruit and vegetable products, the first embodiment can be used to obtain stable heating; for fruit and vegetable products with high ventilation requirements, the second embodiment can be used to ensure sufficient ventilation.

[0047] In some embodiments, the fruit and vegetable packaging box also includes a refrigerant, and the refrigerant can be placed on the inner side of the box, on the consignment, or in a combination of the two. If it is set at the side wall, a wrap-around low-temperature zone can be formed. If it is set at the top area, a sinking cold air circulation can be established. The combined arrangement can achieve three-dimensional temperature control coverage. The setting of the refrigerant can provide a better fresh-keeping environment for fruit and vegetable products. The user can choose the refrigerant installation position according to the characteristics of the goods and the ambient temperature, and ensure that the refrigerant maintains an appropriate distance from the product. Specifically, the refrigerant can be a 250g white unfrozen tap water ice bag. The freezing point of many fruit and vegetable products is 3-4 degrees Celsius, and the freezing point of the ice bag is 0 degrees Celsius. Therefore, if an unfrozen ice bag is used, when the outside temperature is low, if the temperature inside the insulation box 10 drops, the unfrozen ice bag will be frozen first, thereby reducing the phenomenon of frostbite on fruit and vegetable products.

[0048] In one embodiment, the heating element 20 includes a heating pad, the absorbent element 30 includes 8 sheets of absorbent paper, and the cooling medium includes 4 ice bags. Each absorbent paper is laid flat on the bottom of the accommodating cavity 11. The heating pad is located on the side of the absorbent paper away from the bottom 12 of the accommodating cavity 11 and facing the air hole 40. The 4 ice bags are arranged around the accommodating cavity 11. A circular hole with a radius of 5 mm is provided in the middle of the bottom 12 of the S4 model foam box. Specifically, the packaging configuration of the fruit and vegetable packaging box includes a 3mm thick insulation bag, an S4 model foam box (as an insulation box body 10), a heating pad (as a heating element 20), 2 layers of bubble film, 8 sheets of absorbent paper and 4 ice bags (as cooling medium), and the ice bags are placed around the foam box.

[0049] In another embodiment, the heating element 20 includes a heating pad, the absorbent element 30 includes 8 sheets of absorbent paper, and the refrigerant includes 4 ice bags. Each absorbent paper is laid flat on the bottom of the accommodating chamber 11. The heating pad is located on the side of the absorbent paper away from the bottom 12 of the accommodating chamber 11 and facing the air hole 40. The 4 ice bags are arranged at the top of the accommodating chamber 11. A circular hole with a radius of 5 mm is opened in the middle of the bottom 12 of the S4 model foam box. Specifically, the packaging configuration of the fruit and vegetable packaging box includes a 3mm thick insulation bag, an S4 model foam box (as an insulation box body 10), a heating pad (as a heating element 20), 2 layers of bubble film, 8 sheets of absorbent paper and 4 ice bags. The 4 ice bags are all placed on the top of the foam box. Placing the ice bags on the top can improve the cooling effect to a certain extent. The natural sinking property of cold air may help form a certain temperature gradient, so that the temperature in the upper part of the box is lower and the temperature in the lower part is slightly higher, thereby preventing the strawberries from being frostbitten due to overcooling.

[0050] In another embodiment, the heating element 20 includes a heating pad, the absorbent element 30 includes 8 sheets of absorbent paper, and the cooling medium includes 8 ice bags. Each absorbent paper is laid flat on the bottom of the accommodating chamber 11. The heating pad is located on the side of the absorbent paper away from the bottom 12 of the accommodating chamber 11 and facing the air hole 40. Six ice bags are arranged on the side walls of the accommodating chamber 11, and two ice bags are arranged on the top of the accommodating chamber 11. Preferably, the packaging configuration of the fruit and vegetable packaging box includes a 3mm thick insulation bag, an S4 model foam box (as an insulation box body 10), a heating pad (as a heating element 20), a layer of bubble film, 8 sheets of absorbent paper and 8 ice bags (as a cooling medium), of which 6 ice bags are placed on the side and 2 ice bags are placed on the top. The high-density distribution of ice bags ensures uniform coverage of cold air, the side ice bags form a surround cooling, and the top ice bag helps stabilize the overall temperature, thereby effectively inhibiting the respiration of strawberries and the growth of microorganisms. In addition, one layer of bubble film not only provides a buffer for the box, but also avoids the temperature rise caused by excessive insulation, further optimizing the environment inside the box.

[0051] The fruit and vegetable packaging method according to the second embodiment of the present invention comprises:

[0052] S1: Obtain a heat-insulating box 10 having an air hole 40 at the bottom. The heat-insulating box 10 includes a box body 13 , wherein a receiving cavity is formed in the box body 13 , and the air hole 40 extends to the bottom of the receiving cavity 11 ;

[0053] S2: The water absorbing member 40 absorbs water until it is saturated and no water drops, and the water absorbing member 40 is laid on the bottom of the accommodating cavity 11;

[0054] S3: Laying the heating element 20 on the water absorbing element 40 so that the heating element 20 is located above the air hole 40;

[0055] S4: placing the object to be stored in the accommodating cavity 11;

[0056] S5: Place refrigerant on the wall of the accommodating chamber 11 and / or the objects to be stored. Since this embodiment adopts all the technical features of the fruit and vegetable packaging box of the first embodiment, this embodiment has all the beneficial effects brought by the first embodiment, which will not be repeated here.

[0057] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A fruit and vegetable packaging box, characterized in that: The invention comprises an insulation box body, a heating element and a water absorbing element. The insulation box body comprises a box body and a cover body. A receiving cavity with an opening on one side is formed in the box body. The cover body 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 passes through the bottom of the receiving cavity. The heating element and the water absorbing element are arranged at the bottom of the receiving cavity.

2. The fruit and vegetable packaging box according to claim 1, characterized in that: The water absorbing component is laid on the bottom of the accommodating cavity, and the heating component is laid on a side of the water absorbing component away from the bottom of the accommodating cavity.

3. The fruit and vegetable packaging box according to claim 2, characterized in that: The water absorbing member covers 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: There are multiple water absorbing members, and the multiple water absorbing members are laid on the bottom of the accommodating cavity.

6. The fruit and vegetable packaging box according to claim 5, characterized in that: The plurality of water absorbing members avoid the air holes, and the heating member covers the air holes; or the water absorbing members and the heating member avoid the air holes, so that the air holes are connected to the accommodating cavity.

7. The fruit and vegetable packaging box according to claim 1, characterized in that: The air holes are one or more combinations of circular holes, square holes, and strip holes, and / or the air holes are located in the bottom center area of ​​the thermal insulation box.

8. The fruit and vegetable packaging box according to claim 7, characterized in that: The air holes are circular holes, and the diameter of the circular holes is 6 mm to 14 mm; Alternatively, the air hole is a square hole, and the maximum diameter of the square hole is 6 mm to 14 mm; Alternatively, the air holes are strip-shaped holes, the length of the strip-shaped holes is 6 mm to 14 mm, and the width of the strip-shaped holes is 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 arranged on the side wall and / or the top of the accommodating cavity.

10. A method for packaging fruits and vegetables, characterized in that: include: S1: Obtain a heat-insulating box having an air hole at the bottom, the heat-insulating box comprising a box body, a receiving cavity formed in the box body, and the air hole extending to the bottom of the receiving cavity; S2: absorbing water from the water absorbing member until it is saturated and no water is dripping, and laying the water absorbing member on the bottom of the accommodating cavity; S3: Laying a heating element above the water absorbing element so that the heating element is located above the air hole; S4: placing the object to be stored in the accommodating cavity; S5: placing a refrigerant on the wall of the accommodating chamber and / or the object to be stored.

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