A cold storage intelligent ventilation, preservation and disinfection system and method

Abstract

The present application relates to the technical field of cold storage, and provides a cold storage intelligent ventilation, preservation and disinfection system and method.The cold storage intelligent ventilation, preservation and disinfection system comprises a cooling fan arranged in the cold storage, a ventilation device having an air inlet side and an air outlet side, a first air supply pipeline with a first end extending to the outside of a passageway and a second end connected with the air inlet of the air inlet side, a second air supply pipeline with a first end connected with the air outlet of the air inlet side and a second end extending to the inside of the cold storage, the second air supply pipeline being provided with a plurality of air outlets in the cold storage, a first air exhaust pipeline with two ends connected with the cold storage and the air inlet of the air outlet side, a second air exhaust pipeline with a first end connected with the air outlet of the air outlet side and a second end extending to the outside of the passageway, and a first sterilization device connected with the ventilation device.The cold storage intelligent ventilation, preservation and disinfection system has a fast sterilization speed, a strong sterilization and disinfection capacity, and no residue, thereby avoiding harm to the human body.

Description

Technical Field

[0001] This invention relates to the field of cold storage technology, and in particular to a smart ventilation, preservation, and disinfection system and method for cold storage. Background Technology

[0002] Fresh flowers, fruits, vegetables, and other foods stored in cold storage rooms undergo anaerobic respiration in an oxygen-deficient environment. This consumes their own organic matter and produces harmful substances such as ethanol and acetaldehyde. Excessive accumulation of these harmful substances can lead to physiological imbalances, causing discoloration, off-flavors, and spoilage, thus shortening the shelf life of the goods. Simultaneously, their metabolic processes produce gases such as carbon dioxide and ethylene. When these gases accumulate in large quantities, they can accelerate the ripening, aging, and even rotting of fruits and vegetables.

[0003] Currently, the common practice is to regularly ventilate cold storage rooms to remove toxic and harmful gases and introduce fresh air. For disinfection, fruits and vegetables, as well as the indoor environment, are typically disinfected and cleaned before being stored. Common disinfection methods include bleaching powder, 84 disinfectant, sodium hypochlorite, peracetic acid, formaldehyde, and ultraviolet disinfection. Spray disinfection uses aerosols formed by various chemical disinfectants to disinfect the air and object surfaces. Currently, most disinfection methods involve manually preparing the solution and using handheld, backpack, vehicle-mounted, or motorized sprayers to spray disinfectant on goods, floors, and walls in cold storage. This method is not integrated with the ventilation system and operates independently, failing to effectively combine the two. Viruses inside the ventilation and refrigeration equipment remain unsterilized. Furthermore, spraying sodium hypochlorite and other aqueous solutions poses certain health risks, and the resulting halogenated compounds can easily cause secondary pollution. Ultraviolet disinfection is limited to the areas directly exposed to the UV light and cannot effectively disinfect the back or interior of fruits and vegetables.

[0004] Given that existing disinfection methods are inefficient, difficult to disinfect in hard-to-reach areas, and ineffective in disinfecting fruits and vegetables, resulting in incomplete disinfection and the presence of bacteria and viruses that can harm human health, there is an urgent need to develop a new intelligent ventilation, preservation, and disinfection system for cold storage. Summary of the Invention

[0005] This invention provides a smart ventilation, preservation, and disinfection system and method for cold storage, which solves the defects of existing fruit and vegetable disinfection methods, such as incomplete disinfection and residual bacteria in fruits and vegetables.

[0006] This invention provides a smart ventilation, preservation, and disinfection system for cold storage, comprising: a cold air blower installed inside the cold storage; a ventilation device installed in a passageway, the ventilation device having an air inlet side and an air outlet side, the passageway being connected to the cold storage; a first air supply duct, the first end of the first air supply duct extending to the outside of the passageway, the second end of the first air supply duct being connected to the inlet of the air inlet side; a second air supply duct, the first end of the second air supply duct being connected to the outlet of the air inlet side, the second end of the second air supply duct extending into the cold storage, the portion of the second air supply duct located inside the cold storage having multiple air outlets; a first exhaust duct, the two ends of the first exhaust duct being connected to the cold storage and the inlet of the exhaust side, respectively; a second exhaust duct, the first end of the second exhaust duct being connected to the outlet of the exhaust side, the second end of the second exhaust duct extending outside the passageway; and a first sterilization device connected to the ventilation device, the first sterilization device being a disinfectant generator.

[0007] According to the present invention, a smart ventilation, preservation, and disinfection system for cold storage is provided. The first sterilization mechanism includes: a pipe connected to the air inlet side of the ventilation device, and a first valve provided on the pipe; a disinfectant generator connected to the pipe; the ventilation device includes: an air supply mechanism disposed on the air inlet side; a second sterilization mechanism disposed on the air inlet side, the second sterilization mechanism being an ultraviolet sterilization mechanism; an energy recovery unit disposed on the air inlet side and the air exhaust side; and an exhaust mechanism disposed on the exhaust side.

[0008] According to the present invention, a smart ventilation, preservation, and disinfection system for cold storage is provided. The air supply mechanism includes: a second valve disposed in the first air supply duct; a blower disposed between the energy recovery unit and the second air supply duct, wherein the outlet of the first sterilization mechanism is connected to the air inlet side of the blower; the second sterilization mechanism includes: a first filter and a second filter disposed side by side between the second valve and the energy recovery unit; and an ultraviolet sterilizer disposed between the second filter and the energy recovery unit.

[0009] According to the present invention, a smart ventilation, preservation and disinfection system for cold storage is provided, wherein the exhaust mechanism includes: an exhaust fan, the air inlet side of which is connected to the first exhaust duct, and the air outlet side of which is connected to the second exhaust duct; and a third valve disposed in the second exhaust duct.

[0010] According to the present invention, a smart ventilation, preservation, and disinfection system for cold storage further includes: a detection mechanism, installed inside and outside the cold storage, for detecting the concentration of various gases inside the cold storage and the outdoor ambient temperature; and a controller electrically connected to the detection mechanism and the ventilation device.

[0011] The present invention also provides a method for intelligent ventilation, preservation, and disinfection of a cold storage based on the intelligent ventilation, preservation, and disinfection system described above, comprising: acquiring outdoor ambient temperature, carbon dioxide concentration, ethylene concentration, and ozone concentration inside the cold storage; and controlling the operation mode of the cold storage based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, and the ozone concentration and each preset value, wherein the operation mode includes: manual ventilation mode, intelligent ventilation mode, intelligent preservation mode, intelligent disinfection mode, and intelligent disinfection post-exhaust mode.

[0012] According to the present invention, a method for intelligent ventilation, preservation, and disinfection of a cold storage facility, the step of controlling the operation mode of the cold storage facility based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, the ozone concentration, and each preset value further includes: controlling the cold storage facility to operate in manual ventilation mode when the outdoor ambient temperature is less than or equal to the preset temperature.

[0013] According to a method for intelligent ventilation, preservation, and disinfection of a cold storage facility provided by the present invention, the step of controlling the operation mode of the cold storage facility based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, the ozone concentration, and each preset value further includes: controlling the cold storage facility to operate in intelligent ventilation mode when the outdoor ambient temperature is less than or equal to a preset temperature, the carbon dioxide concentration is greater than a first preset concentration, or the ethylene concentration is greater than a second preset concentration.

[0014] According to a method for intelligent ventilation, preservation, and disinfection of a cold storage facility provided by the present invention, the step of controlling the operation mode of the cold storage facility based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, the ozone concentration, and each preset value further includes: controlling the cold storage facility to operate in intelligent preservation mode when the ozone concentration is within a preset preservation concentration range; and controlling the cold storage facility to operate in intelligent disinfection mode when the ozone concentration is within a preset disinfection concentration range.

[0015] According to the present invention, a method for intelligent ventilation, preservation, and disinfection of a cold storage facility, the step of controlling the operation mode of the cold storage facility based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, the ozone concentration, and each preset value further includes: after the cold storage facility operates in intelligent disinfection mode, controlling the cold storage facility to operate in intelligent disinfection post-exhaust mode.

[0016] The intelligent ventilation, preservation, and disinfection system for cold storage provided by this invention, by setting up a first pipe and a first sterilization mechanism, can use ozone to disinfect bacteria and viruses in the air, environment, and fruits and vegetables in the cold storage. The sterilization speed is fast, the sterilization ability is strong, and no residue is left after sterilization, thus avoiding harm to the human body. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the intelligent ventilation, preservation, and disinfection system for cold storage provided by the present invention;

[0019] Figure 2 yes Figure 1 The diagram shows the structure of the ventilation device.

[0020] Figure 3 This is the control logic diagram for the intelligent ventilation mode;

[0021] Figure 4 This is the control logic diagram for the intelligent preservation mode;

[0022] Figure 5 This is a logic diagram for intelligent disinfection and ventilation control;

[0023] Figure label:

[0024] 10: First air supply duct; 11: Second valve; 12: Blower; 13: Second air supply duct; 20: First filter; 21: Second filter; 22: Ultraviolet sterilizer; 23: Energy recovery unit; 30: Air cooler; 40: First exhaust duct; 41: Exhaust fan; 42: Second exhaust duct; 43: Third valve; 50: Disinfectant generator; 51: Pipeline; 52: First valve; 100: Cold storage; 200: Passageway; 300: Control panel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] The terms "first" and "second" in the specification and claims of this invention may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] The following is combined with Figures 1-5 This invention describes a smart ventilation, preservation, and disinfection system and method for cold storage.

[0028] like Figure 1 As shown in the embodiment of the present invention, the intelligent ventilation, preservation, and disinfection system for cold storage includes: a first air supply duct 10, a second air supply duct 13, a ventilation device, a cooler 30, a first exhaust duct 40, a second exhaust duct 42, and a first sterilization mechanism. The cooler 30 is disposed inside the cold storage 100, and the ventilation device is disposed inside the passageway 200. The ventilation device has an air inlet side and an air outlet side, and the passageway 200 is connected to the cold storage 100. The first end of the first air supply duct 10 extends to the outside of the passageway 200, and the second end of the first air supply duct 10 is connected to the inlet on the air inlet side. The first end of the second air supply duct 13 is connected to the outlet on the air inlet side, and the second end of the second air supply duct 13 extends into the cold storage 100. The portion of the second air supply duct 13 located inside the cold storage 100 has multiple air outlets. The two ends of the first exhaust duct 40 are connected to the cold storage 100 and the exhaust side inlet, respectively. The first end of the second exhaust duct 42 is connected to the exhaust side outlet, and the second end of the second exhaust duct 42 extends beyond the passageway 200. The first sterilization mechanism is connected to the ventilation device. The first sterilization mechanism is a disinfectant generating device 50.

[0029] Specifically, in this embodiment, the passageway 200 is adjacent to the cold storage 100, and the air cooler 30 is installed inside the cold storage 100 for cooling. A ventilation system is installed inside the passageway 200 to prevent moisture from covering the components and damaging the system. Fresh air is supplied to the cold storage 100 via the first air supply duct 10, the air inlet side of the ventilation system, and the second air supply duct 13. The cold air generated by the air cooler 30 drives the fresh air supplied through the second air supply duct 13 to circulate within the cold storage 100, thereby expelling carbon dioxide and ethylene produced by the fruits and vegetables inside the cold storage 100 from the passageway 200 through the first exhaust duct 40, the exhaust side of the ventilation system, and the second exhaust duct 42, thus achieving ventilation of the cold storage 100.

[0030] Furthermore, when disinfecting the environment and fruits and vegetables inside the cold storage 100, the first sterilization mechanism is activated, and the disinfectant enters the cold storage 100 through the second air supply duct 13. Since the second air supply duct 13 is installed along the wall of the cold storage 100, and the portion of the second air supply duct 13 inside the cold storage 100 has multiple air outlets, under the action of the cold air from the air cooler 30, the disinfectant is driven to flow along the wall of the cold storage 100, forming an upward air supply and downward return circulation pattern. This effectively removes bacteria, viruses, and microorganisms from inside the cold storage 100, the surrounding walls, and the surface of the fruits and vegetables. Furthermore, when the second air supply duct 13 is installed around the wall of the cold storage 100, the disinfectant, after being discharged from multiple air outlets, can be distributed to various locations within the cold storage 100, providing wide coverage and stronger disinfection capabilities.

[0031] After disinfecting the viruses in the cold storage 100 environment and on the fruits and vegetables, the disinfectant is discharged outside the passageway 200 through the first exhaust duct 40, the exhaust side of the ventilation device, and the second exhaust duct 42, so that personnel can enter the cold storage 100. Optionally, in embodiments of the present invention, the disinfectant can be ozone, chlorine dioxide, formaldehyde, etc.

[0032] Furthermore, in the embodiments of the present invention, the disinfectant is ozone. In the storage of fruits and vegetables, ozone not only kills or inhibits mold growth and prevents rot, but also prevents aging and preserves freshness. The mechanism is that ozone can oxidize and decompose ethylene gas (C2H4), a ripening agent produced by the respiration of fruits and vegetables. The reaction process is as follows: the byproducts of the ethylene reaction have an inhibitory effect on microorganisms such as mold. Ozone plays a role in both sterilization and mold prevention, and rapidly decomposes ethylene metabolism, while slowing down metabolism and delaying ripening, aging, and rot. Simultaneously, when using ozone for disinfection, the ozone after sterilization can decompose into oxygen, without causing residual pollution. Ozone has strong penetration ability, is less likely to leave sterilization dead zones, and has a fast sterilization speed, especially in high humidity environments where the sterilization effect is better. This is because in high humidity environments, the cell membranes of bacteria expand and thin, making their tissues easily destroyed by ozone.

[0033] The intelligent ventilation, preservation, and disinfection system for cold storage provided in this embodiment of the invention, by setting up a second air supply duct and a first sterilization mechanism, can use ozone to disinfect bacteria and viruses in the cold storage environment and on fruits and vegetables. The sterilization speed is fast, the sterilization ability is strong, and no residue is left after sterilization, thus avoiding harm to the human body.

[0034] like Figure 1 As shown, in an embodiment of the present invention, the first sterilization mechanism includes: a disinfectant generating device 50, a pipe 51, and a first valve 52. The disinfectant generating device 50 is connected to the air inlet side of a ventilation device via the pipe 51, and the first valve 52 is provided on the pipe 51.

[0035] Specifically, when disinfecting the cold storage 100, the first valve 52 is opened, and the disinfectant generator 50 is used to generate ozone. The ozone enters the cold storage 100 through the pipe 51 and the second air supply pipe 13, and then flows in the cold storage 100 under the action of the cold air from the air cooler, thereby disinfecting the environment inside the cold storage 100 and the fruits and vegetables inside the cold storage 100.

[0036] like Figure 1 As shown, in an embodiment of the present invention, the ventilation device includes: an air supply mechanism, a second sterilization mechanism, an energy recovery unit 23, and an exhaust mechanism.

[0037] Specifically, the air supply mechanism is located on the air inlet side of the ventilation system. When disinfecting the environment and fruits and vegetables inside the cold storage 100, ozone enters the cold storage 100 through the second air supply duct 13 under the action of the air supply mechanism. The second sterilization mechanism is located on the air inlet side of the ventilation system. The second sterilization mechanism is an ultraviolet sterilization mechanism. Fresh air undergoes ultraviolet sterilization in the second sterilization mechanism before being ventilated inside the cold storage 100. This ensures that the virus content in the air entering the cold storage 100 is low, thus preventing further contamination of the fruits and vegetables. The energy recovery unit 23 is located on both the air inlet and exhaust sides of the ventilation system to recover heat or cold energy from the air. The exhaust mechanism is located on the exhaust side of the ventilation system to exhaust the gas inside the cold storage 100.

[0038] Optionally, in an embodiment of the present invention, the energy recovery unit 23 may be a heat exchanger.

[0039] Specifically, such as Figure 2 As shown, in an embodiment of the present invention, the air supply mechanism includes a second valve 11 and a blower 12. The second valve 11 is disposed in the first air supply duct 10, and the blower 12 is disposed between the energy recovery unit 23 and the second air supply duct 13. The outlet of the first sterilization mechanism is connected to the air inlet side of the blower 12.

[0040] Specifically, when the cold storage 100 is ventilated, the second valve 11 is opened, and fresh air enters the air inlet side of the ventilation device through the first air supply duct 10. After being sterilized by the second sterilization mechanism, it enters the energy recovery unit 23 to recover the heat in the air, and then enters the cold storage 100 through the second air supply duct 13 under the action of the blower 12.

[0041] Furthermore, such as Figure 2 As shown, in an embodiment of the present invention, the second sterilization mechanism includes: a first filter 20 and a second filter 21. The first filter 20 and the second filter 21 are arranged side by side between the second valve 11 and the energy recovery unit 23. The first filter 20 and the second filter 21 are used to filter dust and particulate matter in the air. Specifically, the first filter 20 is a primary filter, which can be a filter screen or the like, used to filter dust and larger particulate matter in the air; the second filter 21 is a secondary filter, which can be a high-efficiency filter, used to filter smaller particulate matter or suspended matter in the air.

[0042] Furthermore, such as Figure 2 As shown, the second sterilization mechanism also includes an ultraviolet sterilizer 22. The ultraviolet sterilizer 22 is disposed between the second filter 21 and the energy recovery unit 23.

[0043] Specifically, fresh air from outside the passageway 200 passes through the first air supply duct 10, then passes through the first filter 20 and the second filter 21 in sequence, and is sterilized by the ultraviolet sterilizer 22. After sterilization, the air undergoes heat exchange through the energy recovery unit 23 and enters the cold storage 100 under the action of the blower 12.

[0044] like Figure 2 As shown, in an embodiment of the present invention, the exhaust mechanism includes an exhaust fan 41 and a third valve 43. The air inlet side of the exhaust fan 41 is connected to the first exhaust duct 40, the air outlet side of the exhaust fan 41 is connected to the second exhaust duct 42, and the third valve 43 is disposed in the second exhaust duct 42.

[0045] Specifically, when ventilating the cold storage 100, the third valve 43 is opened, and the gas inside the cold storage 100 is discharged outside the passageway 200 through the first exhaust duct 40 and the second exhaust duct 42 under the action of the exhaust fan 41.

[0046] When ventilation of the cold storage 100 is required, the second valve 11 and the third valve 43 are opened, and the first valve 52 is closed. Fresh air from outside the passageway 200 passes through the first air supply duct 10, then through the first filter 20 and the second filter 21 to filter out dust and particulate matter. After being sterilized by the ultraviolet sterilizer 22, the sterilized air undergoes heat exchange through the energy recovery unit 23 and then enters the cold storage 100 under the action of the blower 12.

[0047] The filtered and sterilized air enters the cold storage 100. The carbon dioxide, ethylene and other gases in the cold storage 100 enter the second exhaust duct 42 through the first exhaust duct 40 and under the action of the exhaust fan 41, and are then discharged outside the passageway 200.

[0048] When disinfection of cold storage 100 is required, the second valve 11 and the third valve 43 are closed, and the first valve 52 is opened. Ozone generated by the disinfectant generator 50 enters the cold storage 100 through the second air supply duct 13 under the action of the blower 12, and then disperses into the cold storage 100 through the various air outlets on the second air supply duct 13. Driven by the cold air from the air cooler 30, it disinfects the environment and fruits and vegetables in the cold storage 100. After disinfection for a certain period of time, the first valve 52 is closed, and the second valve 11 and the third valve 43 are opened to send filtered and disinfected fresh air into the cold storage 100 and expel the ozone from the cold storage 100.

[0049] Furthermore, in an embodiment of the present invention, the intelligent ventilation, preservation, and disinfection system for cold storage also includes a detection mechanism and a controller. The detection mechanism is located both inside and outside the cold storage 100, and the controller is electrically connected to the detection mechanism and the ventilation device.

[0050] Specifically, the testing agency is used to detect the concentration of various gases inside the cold storage 100, and the controller is used to control the opening and closing of the second valve 11 and the third valve 43 of the ventilation device based on the concentration data of various gases detected by the testing agency.

[0051] Specifically, in an embodiment of the present invention, the detection mechanism includes: a carbon dioxide concentration sensor, an ethylene concentration sensor, an ozone concentration sensor, and a temperature sensor. The carbon dioxide concentration sensor is used to detect the concentration of carbon dioxide gas inside the cold storage 100, the ethylene concentration sensor is used to detect the concentration of ethylene gas inside the cold storage 100, the ozone sensor is used to detect the concentration of ozone inside the cold storage 100, and the temperature sensor is used to detect the outdoor ambient temperature. The controller is electrically connected to the carbon dioxide concentration sensor, the ethylene concentration sensor, the ozone concentration sensor, and the temperature sensor to control the first valve 52, the second valve 11, and the third valve 43 to be in an open or closed state based on the carbon dioxide concentration, the ethylene concentration, the ozone concentration, and the outdoor ambient temperature.

[0052] Specifically, when the outdoor ambient temperature is less than or equal to the preset temperature, the cold storage 100 operates in manual ventilation mode, with the first valve 52 closed, the second valve 11 and the third valve 43 open, the supply fan 12 and the exhaust fan 41 turned on, and the ultraviolet sterilizer 22 turned on; when the outdoor ambient temperature is less than or equal to the preset temperature, and the carbon dioxide concentration is greater than the first preset concentration or the ethylene concentration is greater than the second preset concentration, the cold storage 100 operates in intelligent ventilation mode, with the first valve 52, the second valve 11, and the third valve 43 open, the supply fan 12 and the exhaust fan 41 turned on, and the ultraviolet sterilizer 22 turned on; when the ozone concentration is within the preset preservation concentration range, the cold storage 100... When the cold storage 100 operates in intelligent preservation mode, the first valve 52 is open, the second valve 11 and the third valve 43 are closed, the blower 12 is turned on, the exhaust fan 41 is turned off, and the ultraviolet sterilizer 22 is turned on. When the ozone concentration is within the preset disinfection concentration range, the cold storage 100 operates in intelligent disinfection mode, the first valve 52 is open, the second valve 11 and the third valve 43 are closed, the blower 12 is turned on, and the exhaust fan 41 is turned off. After the cold storage operates in intelligent disinfection mode, the cold storage is controlled to operate in intelligent disinfection post-exhaust mode, the first valve 52 is closed, the second valve 11 and the third valve 43 are opened, the blower 12 and the exhaust fan 41 are turned on, and the ultraviolet sterilizer 22 is turned on.

[0053] Furthermore, in an embodiment of the present invention, the intelligent ventilation, preservation, and disinfection system for cold storage also includes a control panel 300. The control panel 300 is located in the passageway and is equipped with a display screen. The display screen is used to display in real time the temperature, relative humidity, outdoor ambient temperature, carbon dioxide concentration, ethylene concentration, ozone concentration, and running time of each operating mode inside the cold storage 100.

[0054] Specifically, the control panel 300 is equipped with a power button, a power off button, up / down buttons, a reset button, numeric keys, an operating mode button, and a mode setting button. The power off button and the power off button control the main unit to start or stop; the up / down buttons switch between modes; the reset button restores the main unit to its initial state; the numeric keys are used to set the duration, time period, and concentration value; the operating mode button selects the operating mode; and the mode setting button sets the ventilation duration, time period, and concentration value for various operating modes.

[0055] Furthermore, the intelligent ventilation, preservation, and disinfection system for cold storage provided in this embodiment of the invention also includes a cloud server. The controller sends the collected carbon dioxide concentration, ethylene concentration, ozone concentration, and outdoor environmental data to the cloud server. The operator's mobile device is equipped with a corresponding APP, and the operator can remotely view various real-time data inside the cold storage 100 through the mobile device to remotely control the operation mode of the cold storage 100.

[0056] This invention also provides a method for intelligent ventilation, preservation, and disinfection in cold storage, specifically including the following steps:

[0057] Step 01: Obtain the outdoor ambient temperature, carbon dioxide concentration, ethylene concentration, and ozone concentration inside the cold storage; Step 02: Based on the relationship between the outdoor ambient temperature, carbon dioxide concentration, ethylene concentration, and ozone concentration inside the cold storage and each preset value, control the operation mode of the cold storage. The operation modes include: manual ventilation mode, intelligent ventilation mode, intelligent preservation mode, intelligent disinfection mode, and intelligent disinfection post-exhaust mode.

[0058] Specifically, when the outdoor ambient temperature is less than or equal to the preset temperature, the cold storage is controlled to operate in manual ventilation mode; when the outdoor ambient temperature is less than or equal to the preset temperature and the carbon dioxide concentration is greater than the first preset concentration or the ethylene concentration is greater than the second preset concentration, the cold storage is controlled to operate in intelligent ventilation mode; when the ozone concentration is within the preset preservation concentration range, the cold storage is controlled to operate in intelligent preservation mode; when the ozone concentration is within the preset disinfection concentration range, the cold storage is controlled to operate in intelligent disinfection mode; after the cold storage operates in intelligent disinfection mode, the cold storage is controlled to operate in intelligent disinfection post-exhaust mode.

[0059] The intelligent ventilation, preservation, and disinfection method for cold storage provided in this invention can automatically control the ventilation, preservation, disinfection, and exhaust of the cold storage based on the outdoor ambient temperature and the concentration of various gases inside the cold storage. This achieves intelligent control of the cold storage, avoiding the problem of excessive gas content in the cold storage and reduced quality of fruits and vegetables caused by manual control, thus ensuring the quality of fruits and vegetables.

[0060] Furthermore, in an embodiment of the present invention, the specific steps for controlling the cold storage 100 to operate in manual ventilation mode include: controlling the first valve 52 to close, the second valve 11 and the third valve 43 to open, simultaneously controlling the supply fan 12 and the exhaust fan 41 to open, and controlling the ultraviolet sterilizer 22 to open. In this state, it operates for 0.5 to 2 hours (time adjustable) to discharge the polluted waste in the cold storage 100 and to perform ultraviolet sterilization and disinfection on the fresh air.

[0061] In an embodiment of the present invention, the specific steps for controlling the cold storage 100 to operate in intelligent ventilation mode include: controlling the first valve 52 to close, the second valve 11 and the third valve 43 to open, simultaneously controlling the supply fan 12 and the exhaust fan 41 to turn on, controlling the ultraviolet sterilizer 22 to turn on, and continuing to run for 10-60 minutes (time adjustable) after the carbon dioxide concentration and ethylene concentration reach the standard, so as to discharge the polluted waste in the cold storage 100 and perform ultraviolet sterilization and disinfection on the fresh air. Specifically, Table 1 shows the maximum allowable carbon dioxide concentration and maximum ethylene concentration for various fruits and vegetables.

[0062] Table 1. Maximum permissible carbon dioxide and ethylene concentrations for various fruits and vegetables.

[0063]

[0064]

[0065] For example, assuming the fruit stored in cold storage 100 is kiwifruit, according to Table 1, when the carbon dioxide concentration in cold storage 100 exceeds the maximum allowable value of 50,000 ppm for kiwifruit, the effect of carbon dioxide on kiwifruit is significant, causing spots on the skin and browning of the fruit. Conversely, when the ethylene concentration exceeds 0.02 ppm, the kiwifruit ripens rapidly, shortening its storage time. Therefore, in this embodiment, when the detection agency detects that the carbon dioxide concentration in cold storage 100 exceeds the first preset concentration corresponding to kiwifruit, or the ethylene concentration exceeds the second preset concentration, the intelligent ventilation mode will be automatically activated to expel carbon dioxide and ethylene from cold storage 100, thereby reducing their concentrations within cold storage 100.

[0066] Furthermore, in an embodiment of the present invention, the specific steps for controlling the cold storage 100 to operate in intelligent preservation mode include: controlling the first valve 52 to open, the second valve 11 and the third valve 43 to close, simultaneously controlling the blower 12 to open, the exhaust fan 41 to close, controlling the disinfectant generator 50 to open, ensuring the ozone concentration reaches the preservation concentration range, and controlling the ultraviolet sterilizer 22 to open to sterilize and disinfect the circulating air. The ozone concentration inside the cold storage is monitored in real time until it reaches a safe concentration for personnel.

[0067] Specifically, after the cold storage 100 is disinfected, fruits, vegetables or other frozen products are placed inside the cold storage 100. The concentration of ozone is controlled according to the type of products stored, so as to use ozone to preserve the fruits, vegetables and other products.

[0068] The specific steps for controlling the cold storage 100 to operate in the intelligent disinfection mode include: controlling the first valve 52 to open, controlling the second valve 11 and the third valve 43 to close, controlling the blower 12 to open, controlling the exhaust fan 41 to close, simultaneously controlling the disinfectant generator 50 to open, the ozone concentration to reach the disinfection concentration range, and controlling the ultraviolet sterilizer 22 to open to sterilize and disinfect the circulating air.

[0069] Specifically, in the embodiments of the present invention, the disinfectant is ozone. Ozone can disinfect the fruits and vegetables, walls, floor, and shelves inside the cold storage 100 when they are stored there. The ultraviolet sterilizer 22 can sterilize the circulating air. Table 2 shows the ozone disinfection concentration and preservation concentration for various fruits and vegetables.

[0070] Table 2. Ozone disinfection and preservation concentrations for various fruits and vegetables.

[0071]

[0072]

[0073] Furthermore, after the cold storage 100 operates in the intelligent disinfection mode, the specific steps for controlling the cold storage to operate in the intelligent disinfection and exhaust mode include: controlling the first valve 52 to close, controlling the second valve 11 and the third valve 43 to open, controlling the supply fan 12 and the exhaust fan 41 to open, controlling the ultraviolet sterilizer 22 to open, the ultraviolet sterilizer 22 can sterilize and disinfect the fresh air, and stop the intelligent disinfection and exhaust mode when the concentration of the disinfectant is less than the preset value, and monitor the ozone concentration in the cold storage in real time until it reaches a safe concentration for personnel.

[0074] Furthermore, in embodiments of the present invention, the ventilation mode, intelligent preservation mode, intelligent disinfection mode, and intelligent disinfection post-exhaust mode can operate individually or in combination. For example, before or during the storage of fruits and vegetables in the cold storage 100, the intelligent disinfection mode is run to disinfect the cold storage 100. The advantage of using ozone to disinfect the cold storage 100 is that it can be done while the fruits and vegetables are stored in the cold storage 100, without needing to remove them from the cold storage 100. Because the concentration of ozone is high during disinfection, the exhaust mode must be run after disinfection to reduce the ozone concentration to a level suitable for preservation. At this point, the intelligent preservation mode is activated to preserve the fruits and vegetables. During operation, the testing agency monitors the carbon dioxide concentration, ethylene concentration, ozone concentration, and outdoor ambient temperature inside the cold storage 100 in real time. When the outdoor ambient temperature is less than or equal to the preset temperature, the manual ventilation mode is activated while the smart preservation mode is running. Alternatively, when the outdoor ambient temperature is less than or equal to the preset temperature, and the carbon dioxide concentration inside the cold storage 100 is greater than the first preset concentration or the ethylene concentration is greater than the second preset concentration, the smart ventilation mode is activated simultaneously.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these 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 the present invention.

Claims

1. A method for intelligent ventilation, preservation, and disinfection in cold storage, characterized in that, include: The system obtains outdoor ambient temperature, carbon dioxide concentration, ethylene concentration, and ozone concentration inside the cold storage. Based on the relationship between the outdoor ambient temperature, the carbon dioxide concentration, the ethylene concentration, and the ozone concentration and each preset value, the operation mode of the cold storage is controlled, wherein the operation mode includes: manual ventilation mode, intelligent ventilation mode, intelligent preservation mode, intelligent disinfection mode, and intelligent disinfection post-exhaust mode. When the outdoor ambient temperature is less than or equal to the preset temperature, the cold storage is controlled to operate in manual ventilation mode. When the outdoor ambient temperature is less than or equal to a preset temperature, the carbon dioxide concentration is greater than a first preset concentration, or the ethylene concentration is greater than a second preset concentration, the cold storage is controlled to operate in intelligent ventilation mode. When the ozone concentration is within the preset preservation concentration range, the cold storage is controlled to operate in intelligent preservation mode; When the ozone concentration is within the preset disinfection concentration range, the cold storage is controlled to operate in intelligent disinfection mode; After the cold storage is in smart disinfection mode, control the cold storage to operate in smart disinfection exhaust mode; The method for intelligent ventilation, preservation, and disinfection of cold storage is based on an intelligent ventilation, preservation, and disinfection system for cold storage, which includes: Air coolers are installed inside the cold storage. A ventilation device is installed in the passageway, the ventilation device having an air inlet side and an air outlet side, and the passageway is connected to the cold storage; A first air supply duct, the first end of which extends to the outside of the passageway, and the second end of which is connected to the inlet on the air intake side; The second air supply duct has a first end connected to the outlet on the air inlet side, and a second end extending into the cold storage. The portion of the second air supply duct located inside the cold storage is provided with multiple air outlets. The first exhaust duct is connected at both ends to the cold storage and the exhaust side inlet, respectively. The second exhaust duct has a first end connected to the outlet on the exhaust side, and a second end extending outside the passageway. A first sterilization mechanism is connected to the ventilation device, and the first sterilization mechanism is a disinfectant generating device; The first sterilization mechanism includes: A duct is connected to the air inlet side of the ventilation device, and a first valve is provided on the duct. A disinfectant generator is connected to the pipeline; The ventilation device includes: An air supply mechanism is located on the air inlet side; A second sterilization mechanism is provided on the air inlet side, and the second sterilization mechanism is an ultraviolet sterilization mechanism; An energy recovery unit is installed on the air inlet side and the air outlet side; An exhaust system is located on the exhaust side; The air supply mechanism includes a second valve, which is disposed in the first air supply duct. The exhaust mechanism includes a third valve, which is located in the second exhaust duct.

2. The method for intelligent ventilation, preservation, and disinfection of cold storage according to claim 1, characterized in that, The air supply mechanism also includes: A blower is installed between the energy recovery unit and the second air supply duct, and the outlet of the first sterilization mechanism is connected to the air inlet side of the blower. The second sterilization mechanism includes: A first filter and a second filter are arranged side by side between the second valve and the energy recovery unit; An ultraviolet sterilizer is disposed between the second filter and the energy recovery unit.

3. The method for intelligent ventilation, preservation, and disinfection of cold storage according to claim 1, characterized in that, The ventilation system further includes a ventilation fan, the air inlet side of which is connected to the first ventilation duct, and the air outlet side of which is connected to the second ventilation duct.

4. The method for intelligent ventilation, preservation, and disinfection of cold storage according to claim 1, characterized in that, The intelligent ventilation, preservation, and disinfection system for cold storage also includes: The testing facility is located both inside and outside the cold storage room to detect the concentration of various gases inside the cold storage room and the outdoor ambient temperature. The controller is electrically connected to the detection mechanism and the ventilation device.

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