Fresh commodity distribution box

Abstract

The invention belongs to the technical field of logistics distribution equipment, and provides a fresh goods distribution box which comprises an outer box body, an inner box body is arranged in the outer box body, and a box cover is hinged to the interior of an opening of the outer box body; the air inlet end of the fan assembly is communicated with the inner side of the inner box body; the temperature adjusting assembly comprises a temperature control part, and the air outlet end of the fan assembly communicates with the inner side of the inner box body through the temperature control part; the humidity adjusting assembly comprises a humidifying assembly and a dehumidifying assembly, a plurality of humidifying pipes are arranged on the inner side of the box cover, the air outlet end of the fan assembly communicates with the humidifying pipes through the humidifying assembly, and the air inlet end of the fan assembly communicates with the interior of the inner box body through the dehumidifying assembly; the air-conditioning fresh-keeping assembly comprises an air-conditioning generating device, the air outlet end of the fan assembly communicates with the air-conditioning generating device, and the air-conditioning generating device is used for adjusting the proportion of gas components in the inner box body. According to the invention, precise temperature control, humidity adjustment and long-term preservation can be carried out on fresh goods, and the delivery quality of the fresh goods is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of logistics distribution equipment, and in particular relates to a fresh commodity distribution box. Background Art

[0002] With the rapid development of new retail, the online sales of fresh products are expanding. However, there are many challenges in the distribution of offline fresh products, which have strict requirements on temperature, humidity and preservation conditions.

[0003] Most of the common fresh food delivery boxes currently use only simple insulation materials, which makes it difficult to accurately control the temperature inside the box, lack humidity adjustment functions, and have poor preservation effects, and cannot meet the diverse preservation needs of different fresh products. For example, for products such as meat and seafood that need to be stored at lower temperatures, as well as vegetables and fruits that have specific requirements for temperature and humidity, traditional delivery boxes cannot provide a stable and suitable storage environment, causing fresh products to easily deteriorate during transportation, affecting quality and taste. Summary of the invention

[0004] The purpose of the present invention is to provide a fresh food delivery box to solve the above problems, achieve accurate temperature control, humidity regulation and long-term preservation of fresh food during the delivery process, and improve the delivery quality of fresh products.

[0005] To achieve the above object, the present invention provides the following solution: a fresh food delivery box, comprising:

[0006] An outer box body, wherein an inner box body is arranged inside the outer box body, a cavity is arranged between the outer box body and the inner box body, the tops of the outer box body and the inner box body are respectively provided with openings, and a box cover is hinged in the opening of the outer box body;

[0007] A fan assembly, wherein the air inlet end of the fan assembly is in communication with the inner side of the inner box;

[0008] A temperature regulating component, comprising a temperature controlling member arranged at the bottom of the inner side of the outer box, wherein the air outlet of the fan component is connected to the inner side of the inner box through the temperature controlling member, and the temperature controlling member is used to regulate the temperature of the air blown by the fan component into the inner box;

[0009] A humidity adjustment component, comprising a humidification component and a dehumidification component arranged at the bottom of the inner side of the outer box body, a plurality of humidification pipes are arranged on the inner side of the box cover, an air outlet of the fan component is connected with the humidification pipes through the humidification component, and an air inlet of the fan component is connected with the interior of the inner box body through the dehumidification component;

[0010] The atmosphere-controlled fresh-keeping component comprises an atmosphere-controlled generating device arranged at the inner bottom of the outer box body, the gas outlet end of the fan component is connected to the atmosphere-controlled generating device, and the atmosphere-controlled generating device is used to adjust the gas component ratio in the inner box body.

[0011] Preferably, the fan assembly includes a fan fixedly connected to the bottom inner side of the outer box body, the air inlet end of the fan is connected to the dehumidification assembly and the interior of the inner box body through an air inlet main pipe, and the air outlet end of the fan is connected to the temperature control component, humidification component, and air conditioning generating component through an air outlet main pipe.

[0012] Preferably, the temperature control component includes a refrigerator and a heater fixedly connected to the bottom inner side of the outer box body, the air inlet ends of the refrigerator and the heater are respectively connected to the air outlet main pipe, and the air outlet ends of the refrigerator and the heater are respectively connected to the interior of the inner box body through a blowing assembly, and a fourth solenoid valve and a third solenoid valve are respectively connected between the refrigerator and the heater and the blowing assembly.

[0013] Preferably, the blowing assembly includes a plurality of air inlet pipes fixedly connected to a side wall of the inner box, the plurality of air inlet pipes are provided with a plurality of air inlets connected to the inner box, and also includes a second air collecting pipe connected to the plurality of air inlet pipes, the second air collecting pipe is connected to the air outlet ends of the refrigerator and the heater;

[0014] A plurality of the air inlet pipes are fixedly connected to the inner wall of the outer box body.

[0015] Preferably, a plurality of return air pipes are fixedly connected to the outer wall of the inner box away from the air intake pipe, and a plurality of return air pipes are respectively provided with a plurality of return air ports connected to the inner box, and the bottoms of the plurality of return air pipes are connected to a first collecting pipe, and the first collecting pipe is connected to the air intake main pipe.

[0016] Preferably, the humidification group includes a humidifier fixedly connected to the inner bottom of the outer box body, one end of the humidifier is connected to the main air outlet pipe through a second solenoid valve, and the other end of the humidifier is connected to a plurality of humidification pipes through a connecting component.

[0017] Preferably, the connecting assembly includes a plurality of side humidifying tubes fixedly connected to the side wall of the inner box body, the bottoms of the plurality of side humidifying tubes are connected to a third collecting pipe, the third collecting pipe is connected to an end of the humidifier away from the fan, and the tops of the plurality of side humidifying tubes are connected to the plurality of humidifying tubes through hoses respectively;

[0018] A plurality of the side humidifying pipes are fixedly connected to the inner wall of the outer box body.

[0019] Preferably, the dehumidification assembly includes a dehumidifier fixedly connected to the bottom of the inner side of the outer box body, one end of the dehumidifier is connected to the air intake main pipe through a first solenoid valve, and the other end of the dehumidifier is connected to a dehumidification pipe, and the dehumidification pipe is provided with a plurality of dehumidification inlets connected to the inner box body;

[0020] The dehumidification pipe is fixedly connected between the outer wall of the inner box body and the inner wall of the outer box body.

[0021] Preferably, the gas conditioning generating device comprises a carbon dioxide generator and a nitrogen generator fixedly connected to the inner bottom of the outer box body, and the gas outlet ends of the carbon dioxide generator and the nitrogen generator are respectively connected to the air intake main pipe.

[0022] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the temperature control component is to increase or decrease the temperature of the air blown into the inner box; the main function of the humidification component is to generate water vapor; the main function of the dehumidification component is to remove moisture from the air in the inner box to reduce the air humidity; the main function of the humidification tube is to spray water vapor from the box cover downward into the inner box to achieve uniform humidification; the main function of the gas conditioning generator is to adjust the composition ratio of the gas in the inner box. On the whole, the present invention can accurately control the temperature and humidity in the inner box, provide the most suitable storage environment for different types of fresh products, greatly extend the shelf life of fresh products, and reduce the deterioration loss caused by improper temperature and humidity; at the same time, by adjusting the composition ratio of the air through the gas conditioning generator, the respiration and bacterial growth of fresh products are effectively inhibited, and the preservation effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 Schematic diagram of the invented delivery box.

[0025] Figure 2 It is a schematic diagram of the temperature adjustment component, humidity adjustment component, and atmosphere-controlled fresh-keeping component of the present invention;

[0026] Figure 3 It is a schematic diagram of the inner box of the present invention;

[0027] Figure 4 is another schematic diagram of the inner box of the present invention;

[0028] Among them, 1. outer box body; 2. inner box body; 3. box cover; 4. humidifying pipe; 5. spray hole; 6. air inlet; 7. return air port; 8. air inlet pipe; 9. side humidifying pipe; 10. dehumidifying pipe; 11. controller; 12. dehumidifier; 13. carbon dioxide generator; 14. return air pipe; 15. first solenoid valve; 16. air inlet main pipe; 17. first air collecting pipe; 18. fan; 19. power supply; 20. air outlet main pipe; 21. refrigerator; 22. heater; 23. humidifier; 24. second solenoid valve; 25. second air collecting pipe; 26. third solenoid valve; 27. fourth solenoid valve; 28. third air collecting pipe; 29. ​​nitrogen generator; 30. dehumidification inlet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-Figure 4 The present invention provides a fresh food delivery box, comprising:

[0032] An outer box body 1, an inner box body 2 is arranged inside the outer box body 1, a cavity is arranged between the outer box body 1 and the inner box body 2, the tops of the outer box body 1 and the inner box body 2 are respectively arranged with openings, and a box cover 3 is hinged in the opening of the outer box body 1;

[0033] A fan assembly, the air inlet end of the fan assembly is communicated with the inner side of the inner box 2;

[0034] The temperature regulating component includes a temperature control component arranged at the bottom of the inner side of the outer box body 1, and the air outlet of the fan component is connected to the inner side of the inner box body 2 through the temperature control component, and the temperature control component is used to adjust the temperature of the air blown by the fan component to the inner box body 2;

[0035] The humidity adjustment component includes a humidification component and a dehumidification component arranged at the bottom of the inner side of the outer box body 1, and a plurality of humidification tubes 4 are arranged on the inner side of the box cover 3. The air outlet of the fan component is connected with the humidification tube 4 through the humidification component, and the air inlet of the fan component is connected with the interior of the inner box body 2 through the dehumidification component.

[0036] The atmosphere-controlled fresh-keeping component includes an atmosphere-controlled generating device arranged at the inner bottom of the outer box body 1 , and the gas outlet end of the fan component is connected to the atmosphere-controlled generating device, and the atmosphere-controlled generating device is used to adjust the gas component ratio in the inner box body 2 .

[0037] The main function of the inner box 2 is to store fresh goods that need to be distributed; the main function of the fan assembly is to provide power for the circulation of cold / hot air and water vapor in the inner box 2; the main function of the temperature control component is to increase or decrease the temperature of the air blown into the inner box 2; the main function of the humidification component is to generate water vapor; the main function of the dehumidification component is to remove moisture from the air in the inner box 2 to reduce the air humidity; the main function of the humidification tube 4 is to spray water vapor from the box cover 3 downward into the inner box 2 to achieve uniform humidification; the main function of the gas conditioning generator is to adjust the composition ratio of the gas in the inner box 2. On the whole, the present invention can accurately control the temperature and humidity in the inner box, provide the most suitable storage environment for different types of fresh products, greatly extend the shelf life of fresh products, and reduce the deterioration loss caused by improper temperature and humidity; at the same time, by adjusting the composition ratio of the air through the gas conditioning generator, the respiration and bacterial growth of fresh products are effectively inhibited, and the preservation effect is further improved.

[0038] In a further optimized solution, the inner surface of the inner box 2 is coated with an antibacterial insurance coating. The coating can inhibit bacterial growth and reproduction, thereby reducing bacterial contamination during the transportation of fresh products and further improving the preservation effect.

[0039] The antibacterial and fresh-keeping coating can be made of a coating containing antibacterial ingredients such as nano silver ions or chitosan. After the box is made, the coating is evenly applied to the inner surface of the box and can be used after the coating is dried and cured.

[0040] To further optimize the solution, a power supply 19 and a controller 11 are also provided at the inner bottom of the outer box body 1. The main function of the controller 11 is to control the operation of the temperature adjustment component, the humidity adjustment component, and the atmosphere-controlled fresh-keeping component.

[0041] In a further optimized solution, a plurality of temperature sensors, humidity sensors and gas sensors are arranged on the bottom and side of the inner box 2. The temperature sensors, humidity sensors and gas sensors are all electrically connected to the controller.

[0042] The temperature sensor can be a DS18B20 digital temperature sensor, the humidity sensor can be a capacitive humidity sensor such as SHT20, and the gas sensor can be an oxygen sensor, a carbon dioxide sensor, etc.

[0043] A further optimized solution is that the fan assembly includes a fan 18 fixedly connected to the inner bottom of the outer box body 1, the air inlet end of the fan 18 is connected to the dehumidification component and the interior of the inner box body 2 through the air inlet main pipe 16, and the air outlet end of the fan 18 is connected to the temperature control component, the humidification component, and the air conditioning generating component through the air outlet main pipe 20.

[0044] To further optimize the solution, the temperature control component includes a refrigerator 21 and a heater 22 fixedly connected to the inner bottom of the outer box body 1, the air inlet ends of the refrigerator 21 and the heater 22 are respectively connected to the air outlet main pipe 20, and the air outlet ends of the refrigerator 21 and the heater 22 are respectively connected to the interior of the inner box body 2 through the blowing assembly, and the fourth solenoid valve 27 and the third solenoid valve 26 are respectively connected between the refrigerator 21 and the heater 22 and the blowing assembly.

[0045] like Figure 2 As shown, the refrigerator 21 and the heater 22 are arranged below the inner box 2. The refrigerator 21 can be a small compressor refrigerator, and the heater 22 can be a ceramic heating sheet or a resistance wire heater. The fourth solenoid valve 27 and the third solenoid valve 26 mainly control the on-off of the refrigerator 21, the heater 22 and the blowing assembly.

[0046] Further optimized solution, the blowing assembly includes a plurality of air inlet pipes 8 fixedly connected to a side wall of the inner box body 2, a plurality of air inlet pipes 8 are provided with a plurality of air inlets 6 connected to the inner box body 2, and also includes a second air collecting pipe 25 connected to the plurality of air inlet pipes 8, the second air collecting pipe 25 is connected to the air outlet ends of the refrigerator 21 and the heater 22;

[0047] A plurality of air inlet pipes 8 are fixedly connected to the inner wall of the outer box body 1 .

[0048] To further optimize the solution, a plurality of return air pipes 14 are fixedly connected to the outer wall of the inner box 2 away from the air intake pipe 8, and a plurality of return air ports 7 connected to the inner box 2 are respectively opened on the plurality of return air pipes 14. The bottoms of the plurality of return air pipes 14 are connected to a first collecting pipe 17, and the first collecting pipe 17 is connected to the air intake main pipe 16.

[0049] like Figure 1-Figure 3 As shown, when the temperature sensor detects that the temperature in the inner box 2 is too low, the controller 11 controls the heater 22 to work according to the monitoring signal, and then controls the fan 18 to operate, and at the same time only opens the third solenoid valve 26, so that the hot air enters one side of the inner box 2 through the main air outlet pipe 20, the heater 22, the second air collecting pipe 25, a plurality of air inlet pipes 8 and a plurality of air inlet ports 6. At the same time, the low-temperature air on the other side of the inner box 2 enters the fan 18 through the return air port 7, the return air pipe 14, the first air collecting pipe 17 and the air inlet main pipe 16, thereby realizing air circulation heating.

[0050] Similarly, when the air in the inner box 2 needs to be cooled, the controller 11 controls the refrigerator 21 to operate, and only the fourth solenoid valve 27 is opened, so that the temperature of the air in the inner box 2 can be reduced.

[0051] By controlling the air temperature in the inner box 2, the temperature in the inner box 2 is always kept within a preset range. For example, for fresh products that need to be refrigerated, such as meat and seafood, the temperature in the box is controlled at 0-4°C; for vegetables and fruits that need to be stored at room temperature, the temperature can be controlled at 10-20°C.

[0052] To further optimize the solution, an intelligent temperature adjustment algorithm is written into the controller 11. The algorithm comprehensively considers factors such as the type, quantity, initial temperature, external ambient temperature, and delivery time of the fresh products in the box, dynamically adjusts the working state of the refrigeration and heating equipment, and realizes precise temperature control. For example, when the external temperature is high and the delivery time is long, the refrigeration power is automatically increased to ensure the temperature inside the box is stable; when the temperature inside the box is close to the preset temperature lower limit, the refrigeration power is automatically reduced to avoid over-refrigeration.

[0053] A further optimized solution is that the humidification group includes a humidifier 23 fixedly connected to the inner bottom of the outer box body 1, one end of the humidifier 23 is connected to the exhaust main pipe 20 through a second solenoid valve 24, and the other end of the humidifier 23 is connected to a plurality of humidification pipes 4 through a connecting component.

[0054] Further optimized solution, the connecting component includes a plurality of side humidifying pipes 9 fixedly connected to the side wall of the inner box 2, the bottom of the plurality of side humidifying pipes 9 is connected with the third collecting pipe 28, the third collecting pipe 28 is connected with the end of the humidifier 23 away from the fan 18, and the top of the plurality of side humidifying pipes 9 is connected with the plurality of humidifying pipes 4 through hoses respectively;

[0055] A plurality of side humidifying tubes 9 are fixedly connected to the inner wall of the outer box body 1 .

[0056] According to a further optimized solution, a plurality of spray holes 5 are respectively opened downward on the plurality of humidifying tubes 4 .

[0057] like Figure 1 and Figure 2 As shown, the humidifier 23 can be an ultrasonic humidifier or a wet film humidifier. When the humidity sensor detects that the humidity in the inner box 2 is low, the controller 11 controls the humidifier 23 to work according to the monitoring signal, and then controls the fan 18 to operate, and at the same time opens the second solenoid valve 24. The fan 18 uses the airflow to make the water vapor spray the third collecting pipe 28, the side humidifying pipe 9, the plurality of humidifying pipes 4 and the plurality of spray holes 5 from the top of the inner box 2 to the inside thereof, so as to achieve uniform humidification of the air.

[0058] Further optimized solution, the dehumidification assembly includes a dehumidifier 12 fixedly connected to the inner bottom of the outer box body 1, one end of the dehumidifier 12 is connected to the air intake manifold 16 through the first solenoid valve 15, and the other end of the dehumidifier 12 is connected to the dehumidification pipe 10, and the dehumidification pipe 10 is provided with a plurality of dehumidification inlets 30 connected to the inner box body 2;

[0059] The dehumidification pipe 10 is fixedly connected between the outer wall of the inner box body 2 and the inner wall of the outer box body 1 .

[0060] like Figure 2 and Figure 4 As shown, the dehumidifier 12 can be a condensing dehumidifier or an adsorption dehumidifier. When the humidity sensor detects that the air humidity in the inner box 2 is high, the controller 11 opens the first solenoid valve 15 according to the monitoring signal, so that the air in the inner box 2 enters the dehumidifier 12 through the dehumidification inlet 30 and the dehumidification pipe 10 under the negative pressure created by the fan 18, and the moisture is intercepted, so that the dry air enters the fan 18 and is recirculated into the inner box 2, thereby reducing the air humidity.

[0061] The operation of the humidifier 23 and the dehumidifier 12 is automatically controlled by the controller 11 to ensure that the humidity in the inner box 2 is always kept within a range suitable for preserving fresh products. For example, for most vegetables, the suitable humidity range is 80% to 95%; for fruits, the suitable humidity range is 70% to 85%.

[0062] According to a further optimized solution, the gas conditioning generating device includes a carbon dioxide generator 13 and a nitrogen generator 29 fixedly connected to the inner bottom of the outer box body 1, and the gas outlet ends of the carbon dioxide generator 13 and the nitrogen generator 29 are respectively connected to the air inlet main pipe 16.

[0063] like Figure 2 As shown, the controller 11 controls the carbon dioxide generator 13 or the nitrogen generator 29 to operate according to the preset gas component ratio to adjust the ratio of the gas components in the inner box 2 when the gas sensor detects a change in the gas component in the inner box.

[0064] For example, for fruits such as apples and pears, the oxygen content can be controlled at 3% to 5%, and the carbon dioxide content can be controlled at 5% to 8%; for leafy vegetables, the oxygen content can be controlled at 2% to 3%, and the carbon dioxide content can be controlled at 8% to 12%.

[0065] In a further optimized solution, the inner box 2 is fixed in the outer box 1 through the connection of the air inlet pipe 8, the dehumidification pipe 10, the air return pipe 14 and the side humidification pipe 9. At the same time, there is an air compartment between the outer box 1 and the inner box 2, which can improve the thermal insulation performance of the inner box 2.

[0066] To further optimize the solution, the outer box body 1, the inner box body 2 and the box cover 3 are made of composite materials with high strength and good heat insulation performance, such as polyurethane composite materials or polystyrene composite materials.

[0067] The inner box 2 is sequentially provided with a heat preservation layer and a moisture-proof layer, wherein the heat preservation layer may be made of materials such as polyurethane foam or rock wool, and the moisture-proof layer may be made of polyethylene film or moisture-proof paper, etc. The antibacterial and fresh-keeping coating is coated on the surface of the moisture-proof layer.

[0068] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply 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 a limitation on the present invention.

[0069] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A fresh food delivery box, characterized in that: include: An outer box (1), wherein an inner box (2) is arranged inside the outer box (1), a cavity is arranged between the outer box (1) and the inner box (2), the tops of the outer box (1) and the inner box (2) are respectively provided with openings, and a box cover (3) is hingedly connected to the opening of the outer box (1); A fan assembly, wherein an air inlet end of the fan assembly is in communication with the inner side of the inner box (2); A temperature regulating component, comprising a temperature control element arranged at the bottom of the inner side of the outer box (1), the air outlet of the fan component being connected to the inner side of the inner box (2) through the temperature control element, and the temperature control element being used to regulate the temperature of the air blown by the fan component into the inner box (2); A humidity adjustment component, comprising a humidifying component and a dehumidifying component arranged at the bottom of the inner side of the outer box (1); a plurality of humidifying tubes (4) are arranged on the inner side of the box cover (3); an air outlet of the fan component is connected to the humidifying tubes (4) through the humidifying component; and an air inlet of the fan component is connected to the interior of the inner box (2) through the dehumidifying component; The atmosphere-controlled fresh-keeping component comprises an atmosphere-controlled generating device arranged at the inner bottom of the outer box (1), the gas outlet end of the fan component is connected to the atmosphere-controlled generating device, and the atmosphere-controlled generating device is used to adjust the gas component ratio in the inner box (2).

2. A fresh food delivery box according to claim 1, characterized in that: The fan assembly comprises a fan (18) fixedly connected to the inner bottom of the outer box (1); the air inlet end of the fan (18) is connected to the dehumidification assembly and the interior of the inner box (2) through an air inlet main pipe (16); the air outlet end of the fan (18) is connected to the temperature control component, the humidification component, and the air conditioning generating component through an air outlet main pipe (20).

3. A fresh food delivery box according to claim 2, characterized in that: The temperature control component comprises a refrigerator (21) and a heater (22) fixedly connected to the inner bottom of the outer box (1); the air inlet ends of the refrigerator (21) and the heater (22) are respectively connected to the air outlet main pipe (20); the air outlet ends of the refrigerator (21) and the heater (22) are respectively connected to the interior of the inner box (2) through a blowing assembly; a fourth solenoid valve (27) and a third solenoid valve (26) are respectively connected between the refrigerator (21) and the heater (22) and the blowing assembly.

4. A fresh food delivery box according to claim 3, characterized in that: The air blowing assembly comprises a plurality of air inlet pipes (8) fixedly connected to a side wall of the inner box (2), the plurality of air inlet pipes (8) being provided with a plurality of air inlet ports (6) in communication with the inner box (2), and a second air collecting pipe (25) in communication with the plurality of air inlet pipes (8), the second air collecting pipe (25) being in communication with the air outlet ends of the refrigerator (21) and the heater (22); The plurality of air inlet pipes (8) are fixedly connected to the inner wall of the outer box body (1).

5. A fresh food delivery box according to claim 4, characterized in that: A plurality of return air pipes (14) are fixedly connected to the outer wall of the inner box (2) away from the air intake pipe (8), and a plurality of return air pipes (14) are respectively provided with a plurality of return air ports (7) connected to the inner box (2). The bottoms of the plurality of return air pipes (14) are connected to a first air collecting pipe (17), and the first air collecting pipe (17) is connected to the air intake main pipe (16).

6. A fresh food delivery box according to claim 2, characterized in that: The humidification group comprises a humidifier (23) fixedly connected to the inner bottom of the outer box (1); one end of the humidifier (23) is connected to the main air outlet pipe (20) via a second solenoid valve (24); and the other end of the humidifier (23) is connected to a plurality of humidification pipes (4) via a connecting component.

7. A fresh food delivery box according to claim 6, characterized in that: The connecting assembly comprises a plurality of side humidifying tubes (9) fixedly connected to the side wall of the inner box (2); the bottoms of the plurality of side humidifying tubes (9) are connected to a third air collecting tube (28); the third air collecting tube (28) is connected to an end of the humidifier (23) away from the fan (18); the tops of the plurality of side humidifying tubes (9) are connected to the plurality of humidifying tubes (4) via hoses; The plurality of side humidifying pipes (9) are fixedly connected to the inner wall of the outer box body (1).

8. A fresh food delivery box according to claim 2, characterized in that: The dehumidification assembly comprises a dehumidifier (12) fixedly connected to the inner bottom of the outer box (1), one end of the dehumidifier (12) is connected to the air intake main pipe (16) through a first solenoid valve (15), the other end of the dehumidifier (12) is connected to a dehumidification pipe (10), and the dehumidification pipe (10) is provided with a plurality of dehumidification inlets (30) connected to the inner box (2); The dehumidification pipe (10) is fixedly connected between the outer wall of the inner box (2) and the inner wall of the outer box (1).

9. A fresh food delivery box according to claim 2, characterized in that: The gas conditioning generating device comprises a carbon dioxide generator (13) and a nitrogen generator (29) which are fixedly connected to the inner bottom of the outer box (1); the gas outlet ends of the carbon dioxide generator (13) and the nitrogen generator (29) are respectively connected to the gas inlet main pipe (16).

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