Photovoltaic power supply type fruit fresh-keeping device

Abstract

The application discloses a photovoltaic power supply type fruit fresh-keeping device, which comprises a flow channel type fruit storage box, an inorganic sterilization water supply unit, a cooling unit and a photovoltaic generator set. The flow channel type fruit storage box is divided into an upper cover and a storage cavity. An input pipe is arranged at the bottom of the storage cavity, and an output pipe is arranged on the upper cover. The top end of the input pipe and the bottom end of the output pipe are both communicated with a closed storage chamber in the flow channel type fruit storage box. The bottom end of the input pipe and the top end of the output pipe are connected with the cooling unit through a cooling circulation pipeline. The bottom end of the input pipe and the top end of the output pipe are also connected with the inorganic sterilization water supply unit through an inorganic sterilization water circulation pipeline. The power input ends of the inorganic sterilization water supply unit and the cooling unit are respectively connected with the power output end of the photovoltaic generator set. The fresh picked fruits are subjected to early surface sterilization, pre-cooling treatment and heat preservation transportation and storage, so that the fresh-keeping period of the fruits is greatly prolonged.

Description

Technical Field

[0001] This invention relates to the field of fruit and vegetable preservation equipment technology, specifically a photovoltaic-powered fruit preservation device. Background Technology

[0002] Currently, harvested fruits and vegetables have a limited shelf life, some longer and some shorter. Sometimes, they need to undergo long periods of storage and multiple layers of logistics transportation before reaching consumers, placing higher demands on their shelf life. Refrigeration is a relatively common solution, but due to the large investment and high operating costs (electricity) of cold storage facilities, they are generally only located in large logistics hubs and at the beginning and end of the supply chain. Even so, a certain percentage of fruits and vegetables still rot, some during logistics, some at retail, and some hidden inside the packaging until consumers take them home. To overcome this problem, some businesses use chemical treatments, applying various physical and chemical sterilization treatments to the surface of the fruit to reduce rot and extend shelf life; however, this method also poses health risks.

[0003] Studies have shown that early pretreatment of freshly harvested fruits and vegetables can effectively extend their shelf life while meeting organic labeling requirements. Current pretreatment methods involve pre-cooling fruits and vegetables before placing them in cold storage, primarily targeting internal cooling to inhibit respiration and reduce surface microbial activity. However, these pre-cooling devices are typically located in warehouses near agricultural production sites, where there is still a time lag between harvesting and distribution. Furthermore, research indicates that bacteria and mold often accumulate on fruit surfaces, even in their pits, which can lead to overall mold growth, such as green or yellow mold. Therefore, finding more effective, economical, and earlier organic preservation methods for fruits, especially high-value fruits, to effectively extend their shelf life remains a challenge for the industry. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a photovoltaic-powered fruit preservation device that performs early surface sterilization, pre-cooling treatment and heat preservation transportation and storage on freshly picked fruit, thereby greatly extending the shelf life of the fruit.

[0005] The technical solution of this invention is as follows:

[0006] A photovoltaic-powered fruit preservation device includes a flow-channel fruit storage box, an inorganic sterilization water supply unit, a cooling unit, and a photovoltaic generator. The flow-channel fruit storage box includes an outer shell, an inner shell, and a thermal insulation layer. The inner shell is disposed inside the outer shell, and the thermal insulation layer fills the space between the outer shell and the inner shell. The flow-channel fruit storage box is divided into a top cover and a storage cavity. The groove of the inner shell portion of the top cover faces downward, and the groove of the inner shell portion of the storage cavity faces upward. The top cover and the storage cavity are joined vertically, forming a closed storage space inside the inner shell. The storage chamber has an input pipe at the bottom and an output pipe on the top cover. The top and bottom of the input and output pipes are connected to the closed storage chamber to form a flow channel. The bottom and top of the input and output pipes are connected to a cooling unit through a cooling circulation pipe. The bottom and top of the input and output pipes are also connected to an inorganic sterilization water supply unit through an inorganic sterilization water circulation pipe. The power input terminals of the inorganic sterilization water supply unit and the cooling unit are respectively connected to the power output terminals of the photovoltaic generator set.

[0007] Both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline include an input pipeline and an output pipeline. The output end of the input pipeline of both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline is connected to the bottom end of the input pipe through an inlet switching valve group. The input end of the output pipeline of both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline is connected to the top end of the output pipe through an outlet switching valve group. An external circulating water pump is installed on the connecting pipeline between the inlet switching valve group and the bottom end of the input pipe or on the connecting pipeline between the outlet switching valve group and the top end of the output pipe.

[0008] The inorganic bactericidal water supply unit, cooling unit, and photovoltaic generator unit are all mounted on a mobile vehicle.

[0009] The flow channel type fruit storage box has multiple inner shells inside its outer shell, and a heat insulation layer is filled between the outer shell and the multiple inner shells. The input pipe includes a main input pipe and multiple branch input pipes located at the bottom of the storage cavity. The output pipe includes a main output pipe and multiple branch output pipes located on the top cover. Each inner shell has a corresponding branch input pipe connected to its bottom end. The bottom ends of the multiple branch input pipes are all connected to the main input pipe. The bottom ends of each branch output pipe are connected to the interior of a corresponding inner shell. The top ends of the multiple branch output pipes are all connected to the main output pipe. The main input pipe and the main output pipe are connected to a cooling unit through a cooling circulation pipe. The main input pipe and the main output pipe are connected to an inorganic sterilization water supply unit through an inorganic sterilization water circulation pipe.

[0010] The inner walls of both the cover and the outer shell are completely covered with a low-emissivity coating.

[0011] The inner shell of the storage cavity is a hollow nested tubular structure, and the hollow cavities between the nested tubular shells are filled with a cold storage medium.

[0012] The top of the cover and the bottom of the storage cavity, or the bottom of the storage cavity and the top of the cover, are respectively provided with tenons and mortises. When two flow channel fruit storage boxes are stacked, a tenon and mortise joint structure is formed between the two flow channel fruit storage boxes. The input pipe of the upper flow channel fruit storage box is connected to the output pipe of the lower flow channel fruit storage box.

[0013] The inorganic bactericidal water supply unit is selected from either an ozone water supply unit or an electrolyzed water supply unit. The inorganic bactericidal water supply unit includes an inorganic bactericidal water generator and an inorganic bactericidal water storage tank. The inlet and outlet of the inorganic bactericidal water generator are connected to the internal inlet and outlet of the inorganic bactericidal water storage tank through an internal inorganic bactericidal water circulation pipeline. An internal inorganic bactericidal water circulation pump is installed on the internal inorganic bactericidal water circulation pipeline. The external inlet of the inorganic bactericidal water storage tank is connected to the top of the output pipe through the inorganic bactericidal water circulation pipeline, and the external outlet of the inorganic bactericidal water storage tank is connected to the bottom of the input pipe through the inorganic bactericidal water circulation pipeline.

[0014] The cooling unit is selected from either an air cooler or a water cooling unit. The water cooling unit includes a chiller and a cooling water storage tank. The inlet and outlet of the chiller are connected to the internal inlet and outlet of the cooling water storage tank through an internal cooling water circulation pipeline. An internal cooling water circulation pump is installed on the internal cooling water circulation pipeline. The external inlet of the cooling water storage tank is connected to the top of the output pipe through a cooling circulation pipeline, and the external outlet of the cooling water storage tank is connected to the bottom of the input pipe through a cooling circulation pipeline.

[0015] The photovoltaic generator set includes a photovoltaic bracket and an electrical mounting bracket connected to the bottom of a mobile vehicle body, a photovoltaic array mounted on the top of the photovoltaic bracket, and an intelligent control box, a DC / AC control box, a lithium battery module, a photovoltaic inverter, and a distribution box installed on the electrical mounting bracket. The photovoltaic array converts solar energy into DC power, which is then combined by the intelligent control box and sent to the DC / AC control box and the photovoltaic inverter. The DC / AC control box supplies DC power to the lithium battery module for charging. The DC power output from the intelligent control box and the lithium battery module is converted into AC power by the photovoltaic inverter and then sent to the distribution box. The inorganic sterilization water supply unit and the cooling unit are both located directly below the photovoltaic array, and their power input terminals are connected to the power output terminals of the distribution box.

[0016] Advantages of this invention:

[0017] (1) The flow channel fruit storage box of the present invention, together with the inorganic sterilization water supply unit and the cooling unit, performs internal sterilization and cooling on the fresh fruit stored inside the flow channel fruit storage box, so that the flow channel fruit storage box has the functions of cold storage, heat preservation and storage. The flow channel fruit storage box can be transported with logistics transportation. Its cold storage and heat preservation functions help maintain the low temperature of the fruit, greatly reduce the chance of fruit mold, and extend the shelf life of the fruit.

[0018] (2) The present invention is equipped with a photovoltaic generator set, which can directly supply power to the inorganic sterilization water supply unit and the cooling unit without the need for wiring to connect to the mains power, which greatly reduces the complexity of power supply. Moreover, the inorganic sterilization water supply unit, the cooling unit and the photovoltaic generator set of the present invention are all mounted on a mobile vehicle, which makes it easy to move the whole assembly to the picking site and connect with the flow channel fruit storage box, so as to realize rapid pretreatment of fruit after picking, further reducing the probability of fruit quality deterioration and extending the shelf life of fruit.

[0019] (3) The flow channel fruit storage box of the present invention is provided with a tenon and mortise joint structure, which greatly improves the stability of the flow channel fruit storage box when stacked and facilitates subsequent stacking and transportation.

[0020] (4) The outer shell of the flow channel fruit storage box of the present invention can be provided with multiple inner shells. The inner shells can be set according to the shape of the fruit to avoid mutual collision and damage during fruit transportation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure excluding the photovoltaic generator set in Embodiment 1 of the present invention.

[0022] Figure 2 This is a schematic diagram of the flow channel fruit storage box in the open state in Embodiment 1 of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the inorganic sterilization water supply unit, cooling unit and photovoltaic generator set installed on the mobile vehicle body in Embodiment 1 of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the fruit and vegetables placed in the flow channel type fruit storage box in Embodiment 2 of the present invention.

[0025] Figure 5 This is a schematic diagram of the stacked state of the flow channel type fruit storage box in Embodiment 2 of the present invention.

[0026] Reference numerals: 1-Flow channel type fruit storage box, 11-Outer shell, 12-Inner shell, 13-Thermal insulation layer, 14-Cold storage medium, 15-Low emissivity coating, 16-Mortise, 17-Tenon, 18-Input pipe, 181-Main input pipe, 182-Branch input pipe, 19-Output pipe, 191-Main output pipe, 192-Branch output pipe, 121-Long strip inner shell, 2-Electrolyte water supply unit. 21-Electrolyzed water generator, 22-Electrolyzed water storage tank, 23-Electrolyzed water internal circulation pump, 3-Cooling water unit, 31-Chiller, 32-Cooling water storage tank, 33-Cooling water internal circulation pump, 41-Photovoltaic bracket, 42-Electrical bracket, 43-Photovoltaic array, 44-Intelligent control box, 45-DC AC control box, 46-Lithium battery module, 47-Photovoltaic inverter, 48-Distribution box, 5-Inlet water switching valve group, 6-Outlet water switching valve group, 7-External circulation pump, 8-Mobile vehicle body. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] See Figure 1 and Figure 2A photovoltaic-powered fruit preservation device includes a flow channel fruit storage box 1, an inorganic sterilization water supply unit 2, a cooling water unit 3, and a photovoltaic generator. The flow channel fruit storage box includes an outer shell 11, two inner shells 12, and a thermal insulation layer 13. The two inner shells 12 are both located inside the outer shell 11 and have a large-bellied structure. The thermal insulation layer 13 is filled between the outer shell 11 and the two inner shells 12 and is made of extruded polystyrene (XPS) insulation board. Made of insulating material, the flow-channel fruit storage box is divided into a top cover and a storage cavity. The inner shell 12 of the top cover has its slot facing downwards, while the inner shell 12 of the storage cavity has its slot facing upwards. The top cover and the storage cavity are joined together vertically, forming a closed storage chamber inside the inner shell 12. The inner shell 12 of the storage cavity has a hollow nested tube structure. The hollow chamber between the nested tubes is filled with a cold storage medium 14. When the fruit in the inner shell 12 is cooled down, the cold storage medium 14 is simultaneously replaced. In the process of storing fruit, the cooling medium 14 of the flow channel fruit storage box 1 can absorb the heat generated by the fruit's respiration. The inner walls of the cover 11 and the outer shell 11 are completely covered with a low emissivity coating 15, which effectively isolates the heat from the external environment from entering the interior of the flow channel fruit storage box 1. The top of the cover and the bottom of the storage cavity are respectively provided with a mortise 16 and a tenon 17. When two flow channel fruit storage boxes 1 are stacked, a tenon and mortise joint structure is formed between the two flow channel fruit storage boxes 1. Two input pipes 18 are provided at the bottom of the storage cavity, and two output pipes 19 are provided on the cover. The top of each input pipe 18 and the bottom of each output pipe 19 are connected to a corresponding closed storage chamber to form a flow channel. When two flow channel fruit storage boxes 1 are stacked, the input pipe 18 of the upper flow channel fruit storage box is connected to the output pipe 19 of the lower flow channel fruit storage box to form a vertically connected flow channel.

[0030] The inorganic sterilization water supply unit uses an electrolyzed water supply unit. The electrolyzed water supply unit 2 includes an electrolyzed water generator 21 and two electrolyzed water storage tanks 22. The internal inlet and outlet of each electrolyzed water storage tank 22 are connected to the inlet and outlet of the electrolyzed water generator 21 through the corresponding inorganic sterilization water internal circulation pipeline. Each inorganic sterilization water internal circulation pipeline is equipped with an electrolyzed water internal circulation pump 23. The external inlet of the electrolyzed water storage tank 22 is connected to the top of the output pipe 19 through the input pipe of the inorganic sterilization water circulation pipeline. The external outlet of the electrolyzed water storage tank 22 is connected to the bottom of the input pipe 18 through the output pipe of the inorganic sterilization water circulation pipeline.

[0031] The cooling water unit 3 includes a chiller 31 and a cooling water storage tank 32. The inlet and outlet of the chiller 31 are connected to the internal inlet and outlet of the cooling water storage tank 32 through an internal cooling water circulation pipeline. An internal cooling water circulation pump 33 is installed on the internal cooling water circulation pipeline. The external inlet of the cooling water storage tank 32 is connected to the top of the output pipe 19 through the input pipe of the cooling circulation pipeline. The external outlet of the cooling water storage tank 32 is connected to the bottom of the input pipe 18 through the output pipe of the cooling circulation pipeline.

[0032] The output ends of the input pipes of the cooling circulation pipe and the inorganic sterilization water circulation pipe are connected to the bottom end of the input pipe 18 through the inlet water switching valve group 5. The input ends of the output pipes of the cooling circulation pipe and the inorganic sterilization water circulation pipe are connected to the top end of the output pipe 19 through the outlet water switching valve group 6. An external circulating water pump 7 is installed on the connecting pipe between the inlet water switching valve group 5 and the bottom end of the input pipe 18.

[0033] See Figure 3 The electrolytic water supply unit 2, cooling water unit 3, and photovoltaic generator set are all mounted on the mobile vehicle body 8. The photovoltaic generator set includes a photovoltaic bracket 41 and an electrical mounting bracket 42 connected to the bottom of the mobile vehicle body 8, a photovoltaic array 43 mounted on the top of the photovoltaic bracket 41, and an intelligent control box 44, a DC / AC control box 45, a lithium battery module 46, a photovoltaic inverter 47, and a distribution box 48 mounted on the electrical mounting bracket 42. The photovoltaic array 43 converts solar energy into DC power, which is then transmitted through the intelligent control box 44. After convergence, the DC power is sent to the DC / AC control box 45 and the photovoltaic inverter 47. The DC / AC control box 45 supplies DC power to the lithium battery module 46 for charging. The DC power output from the intelligent control box 44 and the lithium battery module 46 is converted into AC power by the photovoltaic inverter 47 and then sent to the distribution box 48. The inorganic sterilization water supply unit 2 and the cooling unit 3 are both located directly below the photovoltaic array 43. The power input terminals of the inorganic sterilization water supply unit 2 and the cooling unit 3 are respectively connected to the power output terminals of the distribution box 48.

[0034] Example 2

[0035] See Figure 4 A photovoltaic-powered fruit preservation device includes a flow channel fruit storage box 1, an inorganic sterilization water supply unit 2, a cooling water unit 3, and a photovoltaic generator set. The structural composition of the inorganic sterilization water supply unit 2, the cooling water unit 3, and the photovoltaic generator set is the same as in the embodiment, except that: see Figure 4The flow-channel fruit storage box 1 has multiple vertically arranged elongated inner shells 121 inside its outer shell 11 to meet the needs of vertically arranged fruits in the mesh bag. A heat-insulating layer 13 is filled between the outer shell 11 and the multiple elongated inner shells 121. The input pipe includes a main input pipe 181 and multiple branch input pipes 182 located at the bottom of the storage cavity. The output pipe includes a main output pipe 191 and multiple branch output pipes 192 located on the top cover. A corresponding [device / device] is connected to the bottom of each elongated inner shell 121. A branch input pipe 182, the bottom ends of multiple branch input pipes 182 are all connected to the main input pipe 181, the bottom end of each branch output pipe 192 is connected to the interior of a corresponding elongated inner shell 121, the top ends of multiple branch output pipes 192 are all connected to the main output pipe 191, the main input pipe 181 and the main output pipe 191 are connected to the cooling unit 3 through a cooling circulation pipe, and the main input pipe 181 and the main output pipe 191 are connected to the inorganic sterilization water supply unit 2 through an inorganic sterilization water circulation pipe.

[0036] See Figure 5 When multiple flow channel fruit storage boxes 1 are stacked, a tenon and mortise joint structure is formed between the upper and lower flow channel fruit storage boxes. The inlet end of the total input pipe 181 and the outlet end of the total output pipe 191 are led out to the outside of the flow channel fruit storage box and then connected to the inorganic sterilization water supply unit 2 and the cooling unit 3 respectively.

[0037] In use, first open the valves connected to the inorganic sterilization water circulation pipeline in the inlet switching valve group 5 and the outlet switching valve group 6. The brine in the electrolyzed water generator 21 is electrolyzed to generate electrolyzed water. The electrolyzed water stored in the electrolyzed water storage tank 22 enters the inner shell 12 through the input pipe and input pipe 18 of the inorganic sterilization water circulation pipeline to perform sterilization circulation treatment on the fruit installed in the inner shell 12. During the sterilization circulation process, the sterilized electrolyzed water flows back to the electrolyzed water storage tank 22 through the output pipe 19 and the output pipe of the inorganic sterilization water circulation pipeline. After the sterilization treatment is completed, close the valves connected to the inorganic sterilization water circulation pipeline in the inlet switching valve group 5 and the outlet switching valve group 6. Close the valves in the inlet switching valve group 5 and the outlet switching valve group 6 that are connected to the cooling circulation pipeline. The cooling water generated by the chiller 31 is stored in the cooling water storage tank 32. The cooling water in the cooling water storage tank 32 enters the inner shell 12 through the input pipe and input pipe 18 of the cooling circulation pipeline to cool and circulate the fruit installed in the inner shell 12. During the cooling circulation process, the heated cooling water flows back to the cooling water storage tank 32 through the output pipe 19 and the output pipe of the cooling circulation pipeline. After the cooling process is completed, the input pipe 18 and the output pipe 19 are sealed with sealing plugs to form a closed storage chamber inside the flow channel fruit storage box 1.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic-powered fruit preservation device, characterized in that: The system includes a flow channel fruit storage box, an inorganic sterilization water supply unit, a cooling unit, and a photovoltaic generator. The flow channel fruit storage box comprises an outer shell, an inner shell, and a thermal insulation layer. The inner shell is located inside the outer shell, and the thermal insulation layer fills the space between the outer shell and the inner shell. The flow channel fruit storage box is divided into a top cover and a storage cavity. The groove of the inner shell portion of the top cover faces downward, and the groove of the inner shell portion of the storage cavity faces upward. The top cover and the storage cavity are joined vertically to form a closed storage chamber inside the inner shell. An input pipe is provided at the bottom of the storage cavity, and an output pipe is provided on the top cover. The top end of the input pipe and the bottom end of the output pipe are connected to the closed storage chamber to form a flow channel. The bottom end of the input pipe and the top end of the output pipe are connected to the cooling unit through a cooling circulation pipe, and the bottom end of the input pipe and the top end of the output pipe are also connected to the inorganic sterilization water supply unit through an inorganic sterilization water circulation pipe. The power input terminals of the inorganic sterilization water supply unit and the cooling unit are respectively connected to the power output terminals of the photovoltaic generator.

2. The photovoltaic-powered fruit preservation device according to claim 1, characterized in that: Both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline include an input pipeline and an output pipeline. The output end of the input pipeline of both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline is connected to the bottom end of the input pipe through an inlet switching valve group. The input end of the output pipeline of both the cooling circulation pipeline and the inorganic sterilization water circulation pipeline is connected to the top end of the output pipe through an outlet switching valve group. An external circulating water pump is installed on the connecting pipeline between the inlet switching valve group and the bottom end of the input pipe or on the connecting pipeline between the outlet switching valve group and the top end of the output pipe.

3. The photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The inorganic bactericidal water supply unit, cooling unit, and photovoltaic generator unit are all mounted on a mobile vehicle.

4. The photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The flow channel type fruit storage box has multiple inner shells inside its outer shell, and a heat insulation layer is filled between the outer shell and the multiple inner shells. The input pipe includes a main input pipe and multiple branch input pipes located at the bottom of the storage cavity. The output pipe includes a main output pipe and multiple branch output pipes located on the top cover. Each inner shell has a corresponding branch input pipe connected to its bottom end. The bottom ends of the multiple branch input pipes are all connected to the main input pipe. The bottom ends of each branch output pipe are connected to the interior of a corresponding inner shell. The top ends of the multiple branch output pipes are all connected to the main output pipe. The main input pipe and the main output pipe are connected to a cooling unit through a cooling circulation pipe. The main input pipe and the main output pipe are connected to an inorganic sterilization water supply unit through an inorganic sterilization water circulation pipe.

5. A photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The inner walls of both the cover and the outer shell are completely covered with a low-emissivity coating.

6. The photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The inner shell of the storage cavity is a hollow nested tubular structure, and the hollow cavities between the nested tubular shells are filled with a cold storage medium.

7. A photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The top of the cover and the bottom of the storage cavity, or the bottom of the storage cavity and the top of the cover, are respectively provided with tenons and mortises. When two flow channel fruit storage boxes are stacked, a tenon and mortise joint structure is formed between the two flow channel fruit storage boxes. The input pipe of the upper flow channel fruit storage box is connected to the output pipe of the lower flow channel fruit storage box.

8. The photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The inorganic bactericidal water supply unit is selected from either an ozone water supply unit or an electrolyzed water supply unit. The inorganic bactericidal water supply unit includes an inorganic bactericidal water generator and an inorganic bactericidal water storage tank. The inlet and outlet of the inorganic bactericidal water generator are connected to the internal inlet and outlet of the inorganic bactericidal water storage tank through an internal inorganic bactericidal water circulation pipeline. An internal inorganic bactericidal water circulation pump is installed on the internal inorganic bactericidal water circulation pipeline. The external inlet of the inorganic bactericidal water storage tank is connected to the top of the output pipe through the inorganic bactericidal water circulation pipeline, and the external outlet of the inorganic bactericidal water storage tank is connected to the bottom of the input pipe through the inorganic bactericidal water circulation pipeline.

9. A photovoltaic-powered fruit preservation device according to claim 1, characterized in that: The cooling unit is selected from either an air cooler or a water cooling unit. The water cooling unit includes a chiller and a cooling water storage tank. The inlet and outlet of the chiller are connected to the internal inlet and outlet of the cooling water storage tank through an internal cooling water circulation pipeline. An internal cooling water circulation pump is installed on the internal cooling water circulation pipeline. The external inlet of the cooling water storage tank is connected to the top of the output pipe through a cooling circulation pipeline, and the external outlet of the cooling water storage tank is connected to the bottom of the input pipe through a cooling circulation pipeline.

10. A photovoltaic-powered fruit preservation device according to claim 3, characterized in that: The photovoltaic generator set includes a photovoltaic bracket and an electrical mounting bracket connected to the bottom of a mobile vehicle body, a photovoltaic array mounted on the top of the photovoltaic bracket, and an intelligent control box, a DC / AC control box, a lithium battery module, a photovoltaic inverter, and a distribution box installed on the electrical mounting bracket. The photovoltaic array converts solar energy into DC power, which is then combined by the intelligent control box and sent to the DC / AC control box and the photovoltaic inverter. The DC / AC control box supplies DC power to the lithium battery module for charging. The DC power output from the intelligent control box and the lithium battery module is converted into AC power by the photovoltaic inverter and then sent to the distribution box. The inorganic sterilization water supply unit and the cooling unit are both located directly below the photovoltaic array, and their power input terminals are connected to the power output terminals of the distribution box.

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