A mobile fruit and vegetable fresh-keeping cold storage with refrigeration, sterilization and fresh-keeping functions
The intelligent cold storage for fruits and vegetables, which integrates radiation refrigeration, ultraviolet sterilization and plasma preservation technologies, solves the problems of high energy consumption and poor sterilization effect in fruit and vegetable preservation, and achieves low-energy and high-efficiency fruit and vegetable preservation. It is suitable for high-end fruit and vegetable storage and long-distance transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
Existing fruit and vegetable preservation technologies suffer from problems such as high initial investment, high equipment energy consumption, inaccurate temperature control, unbalanced humidity control, and limited sterilization effect, resulting in a high risk of fruit and vegetable storage losses.
It adopts an intelligent, mobile cold storage for fruits and vegetables that integrates refrigeration, sterilization, and preservation. Combining radiation refrigeration, ultraviolet sterilization, and plasma preservation technologies, it provides all-round sterilization and preservation. Infrared radiation is used to achieve a low-temperature environment, ultraviolet rays destroy the DNA of microorganisms, and plasma generates hydroxyl free radicals to decompose ripening gases such as ethylene.
It achieves a stable low-temperature environment with low energy consumption, effectively sterilizes and preserves freshness, extends the storage period of fruits and vegetables, reduces the risk of chilling injury, and is suitable for high-end storage and long-distance transportation of fruits and vegetables.
Smart Images
Figure CN224498877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural product storage and preservation technology, and in particular to an intelligent mobile cold storage that integrates radiation refrigeration, ultraviolet sterilization and plasma preservation. Background Technology
[0002] Fresh fruits and vegetables, due to their high water content, are easily affected by seasonality and geographical limitations during production and consumption. In existing post-harvest processing of fruits and vegetables, vacuum precooling equipment in the precooling stage suffers from high initial investment costs and limited applicability to various fruit and vegetable types. Improper control of precooling parameters (such as cooling rate and final temperature threshold) can easily lead to chilling injury. During preservation, some chemical preservatives (such as sulfides, benzoic acid and its salts, and other preservatives) face food safety controversies due to the risk of chemical residues. Their preservation effect is constrained by multiple factors, including the initial quality of the fruits and vegetables, harvest maturity, and processing timeliness. During storage, the high construction and maintenance costs of large-scale storage facilities and the difficulty in precisely controlling environmental parameters (such as temperature, humidity, and gas composition) pose challenges. Furthermore, fruits and vegetables are susceptible to pests and diseases during storage, leading to decreased marketability and economic losses.
[0003] Currently, post-harvest preservation of fruits and vegetables generally employs low-temperature refrigeration technology, which reduces respiration and metabolism, delays ripening and senescence, and significantly extends shelf life. However, low-temperature refrigeration technology has the following limitations in practical applications: First, the equipment needs to operate continuously to maintain the low-temperature environment, which, combined with heat loss from the storage chamber, leads to excessively high overall energy consumption. Second, the temperature control precision is insufficient, resulting in significant and uneven temperature fluctuations within the storage chamber, making it difficult to meet the varying low-temperature tolerance of different types of fruits and vegetables and easily inducing chilling injury. In addition, imbalanced humidity control can easily lead to dehydration or condensation and mold growth in fruits and vegetables, while the refrigeration environment has limited inhibitory effect on low-temperature resistant pathogens (such as Listeria), and existing technologies lack dedicated sterilization and disinfection equipment to collaboratively control microbial activity, further exacerbating the risk of storage losses.
[0004] Therefore, there is an urgent need for an intelligent, mobile cold storage facility that integrates refrigeration, sterilization, and preservation of fruits and vegetables. Utility Model Content
[0005] This invention provides an intelligent, mobile cold storage for fruits and vegetables that integrates refrigeration, sterilization, and preservation. This device can not only provide comprehensive sterilization for the fruits and vegetables stored inside, but also extend their storage period, realizing the combined application of irradiation preservation, ultraviolet sterilization, and plasma preservation technologies.
[0006] This utility model provides an intelligent, mobile cold storage for fruits and vegetables integrating refrigeration, sterilization, and preservation. It includes a storage body, within which are fruit and vegetable cabinets, a temperature and humidity control device, a sterilization and preservation device, a water storage device, a fire prevention device, and a central controller. The sterilization and preservation device includes an ultraviolet sterilization lamp, multiple plasma generators, and an irradiation preservation device. The storage body contains the fruit and vegetable cabinets and the central controller. The ultraviolet sterilization lamp is mounted on the inner top plate of the storage body. The multiple plasma generators are mounted on the side walls of the storage body, with their nozzles facing the fruit and vegetable cabinets. The irradiation preservation device is mounted on the inner floor of the storage body. The water storage device, the temperature and humidity control device, and the fire prevention device are located outside the storage body. The central controller is connected to the temperature and humidity control device, the ultraviolet sterilization lamp, and the multiple plasma generators. The generating device includes a housing, a nozzle, an atomizing chamber, a first motor, and a plasma generator. The rear of the housing has a connecting end connected to the side wall of the tank. The first motor is housed inside the housing. One end of the housing is connected to the nozzle. The atomizing chamber is located between the nozzle and the plasma generator. The liquid inlet of the atomizing chamber is connected to a water tank. The outer contour surface of the plasma generator and the inner wall of the housing form a clearance fit. The inner cavity of the plasma generator sequentially includes a ground electrode, a dielectric layer, and a high-voltage electrode. The ground electrode faces the nozzle. The plasma generator has a through hole coaxial with the airflow channel in the nozzle. The through hole sequentially passes through the ground electrode, the dielectric layer, and the high-voltage electrode. The plasma generator is disc-shaped. The ground electrode has a fan-like structure and is connected to the shaft of the first motor, which passes through the through hole.
[0007] The intelligent mobile cold storage for fruits and vegetables that integrates refrigeration, sterilization and preservation is preferably provided in the following way: the water storage device includes a lid, a water storage tank, a water pipe, a throttling valve and a water pump. The water storage tank is provided with the lid, the bottom of the water storage tank is provided with a drain hole, the water pump is provided inside the water storage tank, the water pump is connected to the storage body through the water pipe, and the throttling valve is provided on the water pipe.
[0008] The intelligent mobile cold storage for fruit and vegetable preservation that integrates refrigeration, sterilization and preservation is preferably equipped with a fire prevention device including an air sampling tube and an air sampling smoke detector. The air sampling tube and the air sampling smoke detector are connected. The air sampling smoke detector is located outside the storage body, the air sampling tube is located inside the storage body, and the air sampling smoke detector is connected to the main controller.
[0009] The aforementioned intelligent mobile cold storage for fruit and vegetable preservation, which integrates refrigeration, sterilization, and preservation, preferably includes an irradiation preservation device comprising a material hopper, a material control valve, an irradiation chamber, a telescopic discharge rod, and a discharge box. The material hopper is connected to the inlet of the irradiation chamber via an inlet pipe, and the material control valve is located at the inlet pipe. The outlet of the irradiation chamber is connected to the telescopic discharge rod via a discharge pipe. An irradiation lamp is installed inside the irradiation chamber. An opening valve is also provided between the discharge pipe and the telescopic discharge rod. The discharge box is located at the bottom of the telescopic discharge rod and is situated on the ground of the storage unit. A discharge port is located on one side of the discharge box.
[0010] The intelligent mobile cold storage for fruit and vegetable preservation that integrates refrigeration, sterilization and preservation is preferably provided in that the opening valve includes a valve plate, a first connecting platform, a second connecting platform and a second motor. The first connecting platform and the second connecting platform are symmetrically arranged at the connection between the discharge pipe and the telescopic discharge rod. The rotating shaft is connected to the second motor. One end of the valve plate is connected to the first connecting platform through the rotating shaft, and the other end of the valve plate may or may not be in contact with the second connecting platform.
[0011] The intelligent mobile cold storage for fruit and vegetable preservation that integrates refrigeration, sterilization and preservation is preferably provided in that the temperature and humidity control device includes a humidity sensor, a temperature sensor and a refrigeration unit. The humidity sensor and the temperature sensor are respectively installed on the inner side wall of the storage body, and the refrigeration unit is installed on the outside of the storage body. The humidity sensor, the temperature sensor and the refrigeration unit are respectively connected to the main controller.
[0012] The intelligent mobile cold storage for fruits and vegetables that integrates refrigeration, sterilization and preservation is preferably provided in the following way: the storage body includes a first wall and a second wall, the second wall is provided outside the first wall and the first wall and the second wall are integrated; the second wall is provided with a door, ventilation holes and a display screen; the door is provided with a handle and a glass window; the ventilation holes are provided with a fan; and the display screen is connected to the main controller.
[0013] Preferably, in the intelligent mobile cold storage for fruit and vegetable preservation that integrates refrigeration, sterilization and preservation, the first wall is made of polyurethane foam board and the second wall is made of color steel plate.
[0014] Preferably, the bottom of the intelligent mobile cold storage for fruit and vegetable preservation, which integrates refrigeration, sterilization and preservation, is equipped with wheels.
[0015] The beneficial effects are:
[0016] This invention's irradiation refrigeration technology utilizes a unique refrigeration principle, employing infrared radiation of a specific wavelength (8-13μm) to penetrate atmospheric windows and achieve direct heat exchange between the object and a low-temperature cosmic cold source (~3K). This differs from traditional active refrigeration technologies that rely on heat transfer paths involving working fluid phase change and mechanical compression. Compared to conventional refrigeration technologies, this invention achieves orders-of-magnitude improvements in key indicators such as energy efficiency ratio (COP→∞), system lifespan (no moving parts), and environmental adaptability (stable operation from -50℃ to 270℃), providing a stable and suitable low-temperature environment for cold storage. This low-temperature environment effectively reduces the respiration and enzyme activity of fruits and vegetables, slowing down their metabolism, thereby helping to maintain their quality and reducing microbial activity and inhibiting their growth and reproduction. Furthermore, the ozone removal technology effectively adsorbs or decomposes ethylene, reducing the ethylene concentration in the storage and further extending the shelf life of fruits and vegetables.
[0017] This invention, in terms of sterilization, disinfection, and synergistic preservation, utilizes ultraviolet lamps to disrupt the DNA structure of microorganisms, effectively inactivating harmful microorganisms such as bacteria and mold in cold storage, thus reducing the spoilage rate of fruits and vegetables. Simultaneously, it inhibits the activity of ethylene synthase on the surface of fruits and vegetables, delaying the ripening process. Furthermore, by combining plasma technology, the generated hydroxyl radicals, ozone, and other highly oxidizing active particles not only penetrate microbial cells for highly efficient sterilization (especially increasing the spore inactivation rate by more than 30% in UV-C shielded areas), but also decompose ripening gases such as ethylene and ethanol in the storage environment, thereby maintaining the quality of fruits and vegetables.
[0018] This invention integrates radiative refrigeration and plasma technology. Radiative refrigeration requires no external energy, relying on natural radiation for cooling, resulting in significant energy savings. Plasma technology provides low-energy sterilization, is more environmentally friendly than traditional chemical disinfectants, and does not contaminate fruits and vegetables. Ultraviolet lamp sterilization technology efficiently inactivates pathogens at low temperatures, overcoming the limitations of traditional cold storage temperature control or chemical antibacterial methods. Compared to single-function cold storage, this device boasts superior comprehensive performance and is widely used in fruit and vegetable preservation, cold chain transportation, and other fields, especially suitable for high-end fruit and vegetable storage and long-distance transportation, meeting diverse preservation needs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the structure within the warehouse;
[0021] Figure 3 This is a schematic diagram of a plasma generator.
[0022] Figure 4 This is a schematic diagram showing the distribution of the plasma generator on the side wall of the tank.
[0023] Figure 5This is a schematic diagram of the structure of an irradiation preservation device;
[0024] Figure 6 This is a schematic diagram of the valve structure.
[0025] 1. Storage body; 3. Fan; 4. Ventilation vents; 5. Air sampling smoke detector; 6. Display screen;
[0026] 7. Main controller; 8. Air sampling tube; 9. Glass window; 10. Handle; 11. Vault door;
[0027] 12. Throttling valve; 13. Water pipe; 14. Water storage tank; 15. Water pump; 16. Drain hole; 17. Tank lid;
[0028] 18. First wall; 19. Second wall; 20. UV fixing plate; 21. Ethylene adsorbent
[0029] 22-1. Temperature sensor; 22-2. Humidity sensor; 23. Ultraviolet sterilization lamp;
[0030] 24. Fruit and vegetable display case; 25. Irradiation preservation device; 26. Plasma generator;
[0031] 27. Refrigeration unit; 28. Coil; 29. Housing; 30. Nozzle; 31. Atomizing chamber; 32. Liquid inlet;
[0032] 33. Plasma generator; 34. Tail end of the casing; 35. Water tank; 36. Ground electrode; 37. Dielectric layer;
[0033] 38. High-voltage electrode; 39. Material hopper; 40. Material control valve; 41. Irradiation chamber; 42. Telescopic discharge rod;
[0034] 43. Discharge box; 44. Valve plate; 45. First connecting platform; 46. Second connecting platform; 47. Rotating shaft;
[0035] 48. Discharge pipe; 49. Irradiation lamp; 50. Second motor. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the use of terms such as "first," "second," etc., to define components is merely for the convenience of distinguishing the aforementioned components; unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] This utility model provides an intelligent, mobile cold storage for fruits and vegetables that integrates refrigeration, sterilization, and preservation. The cold storage includes a body containing fruit and vegetable cabinets, a temperature and humidity control device, a sterilization and preservation device, a water storage device, a fire prevention device, and a central controller. The sterilization and preservation device includes an ultraviolet sterilization lamp, multiple plasma generators, and an irradiation preservation device. The cold storage contains the fruit and vegetable cabinets and the central controller. The ultraviolet sterilization lamp is mounted on the inner top plate of the cold storage. The multiple plasma generators are mounted on the side walls of the cold storage with their nozzles facing the fruit and vegetable cabinets. The irradiation preservation device is mounted on the inner floor of the cold storage. The water storage device, the temperature and humidity control device, and the fire prevention device are located outside the cold storage. The central controller is connected to the temperature and humidity control device, the ultraviolet sterilization lamp, and the multiple plasma generators. This invention integrates a multi-dimensional synergistic mechanism that combines irradiation refrigeration (direct heat exchange from a cosmic cold source based on infrared radiation through an 8-13μm atmospheric window, achieving COP→∞ energy efficiency and stable operation under all conditions), ozone ethylene removal (precisely controlling ethylene concentration), UV-C sterilization (destroying microbial DNA), and plasma active oxidation (decomposing pollutants and pathogens). This constructs a full-chain intelligent preservation system from ultra-low temperature environment control and metabolic inhibition to microbial elimination, significantly delaying the deterioration of fruits and vegetables and maintaining their quality, achieving a green, efficient, low-consumption, and long-lasting innovation in cold chain storage and transportation.
[0040] The following section uses an intelligent, mobile cold storage unit that integrates refrigeration, sterilization, and preservation as an example to illustrate the entire technical process in detail.
[0041] Example 1
[0042] like Figure 1 and Figure 2 As shown, an intelligent, mobile cold storage for fruit and vegetable preservation, integrating refrigeration, sterilization, and preservation, is characterized by comprising a storage body 1. The storage body 1 contains fruit and vegetable cabinets, a temperature and humidity control device, a sterilization and preservation device, a water storage device, a fire prevention device, and a main controller 7. The sterilization and preservation device includes an ultraviolet sterilization lamp 23, multiple plasma generators 25, and an irradiation preservation device 25. The storage body 1 contains fruit and vegetable cabinets 24 and the main controller 7. The ultraviolet sterilization lamp 23 is installed on the inner top plate of the storage body 1. The multiple plasma generators 25 are installed on the side walls of the storage body 1, with the nozzles 30 of the plasma generators 25 facing the fruit and vegetable cabinets 24. The irradiation preservation device 25 is installed on the inner floor of the storage body 1. The water storage device, the temperature and humidity control device, and the fire prevention device are located outside the storage body 1. The main controller 7 is connected to the temperature and humidity control device, the ultraviolet sterilization lamp 23, and the multiple plasma generators 26.
[0043] Among them, the main controller 7 is a PLC controller.
[0044] Among them, the ultraviolet sterilization lamp 23 generally needs to be used regularly (such as at night, before and after fruits and vegetables enter and leave the warehouse) for comprehensive sterilization; when microbial levels are detected to be excessive, or before new goods are put into the warehouse, it also needs to be turned on to avoid contamination of fruits and vegetables.
[0045] like Figure 3 and Figure 4 As shown, the plasma generating device includes a housing 29, a nozzle 30, an atomizing chamber 31, a first motor, and a plasma generator 33. The tail 34 of the housing is provided with a connecting end, which is connected to the side wall of the tank 1. The first motor is provided inside the housing 29. One end of the housing 29 is connected to the nozzle 30. The nozzle 30 and the plasma generator 33 are provided with an atomizing chamber 31. The liquid inlet of the atomizing chamber 31 is connected to the water tank 35. The outer contour surface of the plasma generator 33 and the inner wall of the housing 29 form a clearance fit. The inner cavity of the plasma generator 33 includes a ground electrode 36, a dielectric layer 37, and a high-voltage electrode 38 in sequence. The ground electrode 36 faces the nozzle 30. The plasma generator 33 is provided with a through hole. The through hole is coaxial with the airflow channel in the nozzle 30. The through hole passes through the ground electrode 36, the dielectric layer 37, and the high-voltage electrode 38 in sequence. The plasma generator 33 is disc-shaped. The ground electrode 36 has a fan blade structure. The ground electrode 36 is connected to the rotating shaft of the first motor. The rotating shaft passes through the through hole.
[0046] The ground electrode 36 with its fan-shaped structure generates an airflow during rotation, which diffuses the plasma-activated gas into the atomization chamber 31. The rotation of the ground electrode 36 also agitates the gas within the chamber, breaking down unactivated gas and generating more plasma-activated gas.
[0047] The plasma generator 26 is activated when an odor appears inside the storage chamber 1, when continuous preservation is required (at certain intervals), or when air quality declines and affects the preservation effect, in order to remove odors, inhibit microorganisms, and improve the environment.
[0048] like Figure 5 As shown, the irradiation preservation device includes a material hopper 39, a material control valve 40, an irradiation chamber 41, a telescopic discharge rod 42, and a discharge box 43. The material hopper 39 is connected to the inlet of the irradiation chamber 41 through an inlet pipe. The material control valve 40 is provided at the inlet pipe. The outlet of the irradiation chamber 41 is connected to the telescopic discharge rod 42 through an outlet pipe 48. An irradiation lamp 49 is provided inside the irradiation chamber 41. An opening valve is also provided between the outlet pipe 48 and the telescopic discharge rod 42. The bottom of the telescopic discharge rod 42 is provided with a discharge box 43. The discharge box 43 is set on the ground of the storage body 1, and an outlet is provided on one side of the discharge box 43.
[0049] like Figure 6 As shown, the opening valve includes a valve plate 44, a first connecting platform 45, a second connecting platform 46, and a second motor 50. The first connecting platform 45 and the second connecting platform 46 are symmetrically arranged at the connection between the discharge pipe and the telescopic discharge rod 42. The rotating shaft is connected to the second motor 50. One end of the valve plate 44 is connected to the first connecting platform 45 through the rotating shaft, and the other end of the valve plate 44 is in contact with the second connecting platform 46.
[0050] During operation, the fruits and vegetables to be processed enter the system by gravity through the material hopper 39. The material control valve 40 is activated to adjust the fruits and vegetables. At the same time, the irradiation lamp 49 is turned on to emit rays for sterilization and to assist in preservation. After the irradiation time is reached, the second motor 50 drives the rotating shaft to rotate, causing the valve plate 44 to move away from the second connecting platform 46. At this time, the irradiated fruits and vegetables are transported to the discharge box 43 through the telescopic discharge rod 42, whose telescopic movement precisely controls the transmission rhythm.
[0051] like Figure 1 As shown, the water storage device includes a bucket cover 17, a water storage tank 14, a water pipe 13, a throttle valve 12, and a water pump 15. The water storage tank 14 is provided with a bucket cover 17, and the bottom of the water storage tank 14 is provided with a drain hole 16. The water storage tank 14 is provided with a water pump 15, and the water pump 15 is connected to the reservoir body 1 through the water pipe 13. The water pipe 13 is provided with a throttle valve 12.
[0052] The water storage tank 14 is used to store water. The water pump 15 draws water from the water storage tank 14 and transmits it through the water pipe 13. The throttle valve 12 controls the water flow and provides the necessary water source support for the temperature and humidity regulation device, thereby helping to maintain a suitable temperature and humidity environment inside the cold storage 1, ensuring that the refrigeration and preservation functions of the cold storage are effectively realized, and providing a water source for precise water volume control for humidification or related refrigeration links, thus helping to preserve the goods inside the cold storage.
[0053] like Figure 1 As shown, the fire protection device includes an air sampling tube 8 and an air sampling smoke detector 5. The air sampling tube 8 and the air sampling smoke detector 5 are connected. The air sampling smoke detector 5 is installed outside the storage body 1, and the air sampling tube 8 is installed inside the storage body 1. The air sampling smoke detector 5 is connected to the main controller 7.
[0054] like Figure 2 As shown, the temperature and humidity control device includes a humidity sensor 22-2, a temperature sensor 22-1, and a refrigeration unit 27. The humidity sensor 22-2 and the temperature sensor 22-1 are respectively installed on the inner side wall of the storage body 1, and the refrigeration unit 27 is installed on the outside of the storage body 1. The humidity sensor 22-2, the temperature sensor 22-1, and the refrigeration unit 27 are respectively connected to the main controller 7.
[0055] The refrigeration unit 27 is located outside the cold storage unit 1, which offers the following advantages: First, it facilitates heat dissipation. The refrigeration unit generates a lot of heat during operation, and a well-ventilated outdoor environment allows for heat dissipation, improving refrigeration efficiency and extending equipment lifespan. Second, it reduces noise interference. The refrigeration unit 27 operates noisily; placing it outdoors avoids impacting stored items and the surrounding working environment. Third, it facilitates maintenance and repair. The open outdoor space allows technicians to more easily perform routine inspections, maintenance, and troubleshooting of the refrigeration unit without frequently entering and exiting the cold storage, thus minimizing disruption to the internal environment. Fourth, it reduces the indoor heat load, decreasing energy consumption of indoor cooling equipment such as air conditioners. Furthermore, by implementing protective measures such as constructing a rain shelter and implementing vibration and noise reduction measures when located outside the cold storage unit 1, the stable operation of the equipment can be further ensured.
[0056] like Figure 1 and Figure 2 As shown, the interior of the storage unit 1 is equipped with a fruit and vegetable cabinet 24, and the bottom of the storage unit 1 is equipped with storage wheels 28.
[0057] When the fan 3 is running, it drives the air to circulate inside the storage unit 1, so that the cooling capacity generated by the refrigeration unit 27 or the air processed by the temperature and humidity control device is evenly distributed, ensuring that the temperature and humidity environment inside the storage unit 1 is stable and uniform, which is conducive to the preservation of fruits, vegetables and other items.
[0058] Ventilation hole 4 provides a channel for air to enter and exit, allowing fresh external air to be introduced and humid heat or gases such as ethylene that may accumulate inside to be expelled (ethylene adsorbent can be used to treat this), maintaining fresh air inside the storage body 1 and reducing the impact of odors and unpleasant gases on the preserved items.
[0059] Example 2
[0060] Unlike in Embodiment 1, the warehouse body 1 includes a first wall 18 and a second wall 19. The second wall 19 is provided outside the first wall 18, forming an integral unit. The second wall 19 is provided with a warehouse door 11, a display screen 6, and a ventilation hole 4. A fan 3 is provided on the ventilation hole 4. The warehouse door 11 is provided with a handle 10 and a glass window 9. The display screen 6 is connected to the main controller 7.
[0061] The first wall 18 is made of polyurethane foam board, and the second wall 19 is made of color steel plate.
[0062] Work process:
[0063] The refrigeration system is activated by starting the refrigeration unit 27 via the main controller 7, which absorbs heat from the storage chamber 1 and rapidly cools it down. Humidity sensor 22-2 and temperature sensor 22-1 monitor the temperature and humidity in real time, and the data is displayed on the display screen 6 via the main controller 7.
[0064] After confirming the temperature is suitable, turn handle 10 to open the door 11 via the hinge and place the fruits and vegetables into the storage unit 1. For sterilization, activate the ultraviolet sterilization lamp 23 via the main controller 7. Use ultraviolet light to kill microorganisms inside the storage unit 1, achieving the purpose of disinfection. The ultraviolet light also decomposes ethylene, purifying the air.
[0065] Plasma treatment involves starting the plasma generator 26 via the main controller 7, utilizing its sterilization, ethylene inhibition, and surface modification functions to extend the shelf life of fruits and vegetables and maintain their quality.
[0066] The irradiation preservation device 25 is activated by the main controller 7 to inhibit microbial growth, delay ripening, and reduce nutrient loss, thereby further extending the shelf life.
[0067] Add sterilizing and preservative: Open the lid 17 and add the sterilizing and preservative into the water storage tank 14, then close the lid 17.
[0068] Air sampling smoke detectors 5 and air sampling tubes 8 are used to monitor the air inside the storage unit 1 in real time to ensure early warning of fire and protect the safety of the storage unit 1.
[0069] Maintenance and management: Regularly inspect the operating status of equipment such as refrigeration unit 27, ultraviolet sterilization lamp 23, plasma generator 26, and irradiation preservation device 25.
[0070] Record temperature and humidity data and adjust equipment operating parameters in a timely manner.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An intelligent, mobile cold storage unit for fruit and vegetable preservation that integrates refrigeration, sterilization, and preservation, characterized in that: The device includes a storage unit, which contains fruit and vegetable cabinets, a temperature and humidity control device, a sterilization and preservation device, a water storage device, a fire prevention device, and a main controller. The sterilization and preservation device includes an ultraviolet sterilization lamp, multiple plasma generators, and an irradiation preservation device. The storage unit contains the fruit and vegetable cabinets and the main controller. The water storage device, the temperature and humidity control device, and the fire prevention device are located outside the storage unit. The main controller is connected to the temperature and humidity control device, the ultraviolet sterilization lamp, and the multiple plasma generators. The plasma generating device includes a housing, a nozzle, an atomizing chamber, a first motor, and a plasma generator. The rear of the housing has a connecting end connected to the side wall of the tank. The first motor is housed inside the housing. One end of the housing is connected to the nozzle. The atomizing chamber is located between the nozzle and the plasma generator. The liquid inlet of the atomizing chamber is connected to a water tank. The outer contour surface of the plasma generator and the inner wall of the housing form a clearance fit. The inner cavity of the plasma generator sequentially includes a ground electrode, a dielectric layer, and a high-voltage electrode. The ground electrode faces the nozzle. The plasma generator has a through hole coaxial with the airflow channel in the nozzle. The through hole sequentially passes through the ground electrode, the dielectric layer, and the high-voltage electrode. The plasma generator is disc-shaped. The ground electrode has a fan blade structure. The ground electrode is connected to the shaft of the first motor, and the shaft passes through the through hole.
2. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 1, is characterized in that, The water storage device includes a lid, a water storage tank, a water pipe, a throttling valve, and a water pump. The water storage tank is equipped with the lid, and the bottom of the water storage tank is equipped with a drain hole. The water pump is installed inside the water storage tank, and the water pump is connected to the reservoir body through the water pipe. The throttling valve is installed on the water pipe.
3. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 2, is characterized in that, The fire prevention device includes an air sampling tube and an air sampling smoke detector. The air sampling tube and the air sampling smoke detector are connected. The air sampling smoke detector is located outside the storage body, and the air sampling tube is located inside the storage body. The air sampling smoke detector is connected to the main controller.
4. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 3, is characterized in that, The irradiation preservation device includes a material hopper, a material control valve, an irradiation chamber, a telescopic discharge rod, and a discharge box. The material hopper is connected to the inlet of the irradiation chamber via an inlet pipe. The material control valve is installed at the inlet pipe. The outlet of the irradiation chamber is connected to the telescopic discharge rod via a discharge pipe. An irradiation lamp is installed inside the irradiation chamber. An opening valve is also installed between the discharge pipe and the telescopic discharge rod. The discharge box is located at the bottom of the telescopic discharge rod and is located on the ground of the storage unit. A discharge port is provided on one side of the discharge box.
5. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 4, is characterized in that, The opening valve includes a valve plate, a first connecting platform, a second connecting platform, and a second motor. The first connecting platform and the second connecting platform are symmetrically arranged at the connection between the discharge pipe and the telescopic discharge rod. The rotating shaft is connected to the second motor. One end of the valve plate is connected to the first connecting platform through the rotating shaft, and the other end of the valve plate may or may not be in contact with the second connecting platform.
6. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 5, is characterized in that, The temperature and humidity control device includes a humidity sensor, a temperature sensor, and a refrigeration unit. The humidity sensor and the temperature sensor are respectively installed on the inner side wall of the storage body, and the refrigeration unit is installed on the outside of the storage body. The humidity sensor, the temperature sensor, and the refrigeration unit are respectively connected to the main controller.
7. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 6, is characterized in that, The storage unit includes a first wall and a second wall. The second wall is located outside the first wall and the first wall and the second wall are integrated. The second wall is provided with a storage door, a ventilation hole and a display screen. The storage door is provided with a handle and a glass window. The ventilation hole is provided with a fan. The display screen is connected to the main controller.
8. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in claim 7, is characterized in that, The first wall is made of polyurethane foam board, and the second wall is made of color steel plate.
9. The intelligent mobile cold storage for fruit and vegetable preservation integrating refrigeration, sterilization, and preservation as described in any one of claims 1 to 8, characterized in that, The bottom of the container is equipped with wheels.