Disinfection and killing method of refrigeration house, refrigeration house and computer readable storage medium

Abstract

The invention relates to the technical field of refrigeration house disinfection and killing, and discloses a disinfection and killing method of a refrigeration house, the refrigeration house and a computer readable storage medium, the disinfection and killing method of the refrigeration house comprises the following steps: controlling a refrigeration device of the refrigeration house to operate; acquiring a disinfection type of the refrigeration house; if the mode is the ozone disinfection mode, acquiring the ozone disinfection degree; acquiring a corresponding ozone generation rate and a natural attenuation rate according to the ozone disinfection degree; according to the ozone generation rate and the natural attenuation rate, the working time of an ozone disinfection device and the ozone decomposition time in the refrigeration house are obtained, and the ozone disinfection device is controlled to operate according to the working time and the ozone decomposition time. According to the sterilizing method for the refrigeration house, the working time of sterilization and the ozone decomposition time in the refrigeration house are obtained according to the parameters such as the ozone generation rate and the natural attenuation rate, so that articles such as litchis needing to be preserved in the refrigeration house are sterilized and killed on the premise that breathing health of people is not harmed, and the service life of the refrigeration house is prolonged. And therefore, the fresh-keeping and long-time preservation of articles such as litchis needing fresh-keeping are realized.

Description

Technical Field

[0001] This invention relates to the field of cold storage disinfection technology, specifically to a disinfection method for cold storage, a cold storage facility, and a computer-readable storage medium. Background Technology

[0002] Lychees and other items requiring preservation are highly popular with consumers due to their unique taste and nutritional value, resulting in significant market demand. However, lychees, for example, are characterized by high respiration rates, easy water loss, easy discoloration, and easy rotting, causing them to spoil rapidly shortly after harvesting and making them difficult to preserve for extended periods. Summary of the Invention

[0003] In view of this, the present invention provides a disinfection method for a cold storage, a cold storage facility, and a computer-readable storage medium to solve the problem of the difficulty in preserving fruits such as lychees for a long time.

[0004] In a first aspect, the present invention provides a method for disinfection of a cold storage facility, comprising:

[0005] Control the operation of the refrigeration unit in the cold storage;

[0006] Obtain the type of disinfection required for the cold storage facility;

[0007] If it is ozone disinfection mode, then obtain the ozone disinfection level;

[0008] Based on the ozone elimination level, obtain the corresponding ozone generation rate and natural decay rate;

[0009] The working time of the ozone disinfection device and the ozone decomposition time in the cold storage are obtained based on the ozone generation rate and the natural decay rate, and the operation of the ozone disinfection device is controlled according to the working time and the ozone decomposition time.

[0010] Beneficial effects: The operation of the refrigeration unit not only lowers the temperature inside the cold storage, providing a cooler storage environment for items requiring preservation, such as lychees, but also allows the ozone generated by the ozone disinfection device to reach the surface of these items under the influence of the cold air from the refrigeration unit. Utilizing the strong oxidizing and easily decomposable properties of ozone, it reacts with bacteria and viruses through a series of redox reactions, altering the surface electrical properties of microorganisms and causing their cell membranes to rupture and die. This effectively disinfects the surface of the items, thus achieving the goal of preserving lychees and other items requiring preservation for extended periods. Furthermore, the disinfection method for the cold storage is optimized by adjusting parameters such as ozone generation rate and natural decay rate to determine the working time of the ozone disinfection device and the ozone decomposition time within the cold storage. This ensures that the disinfection of lychees and other items requiring preservation is achieved without harming human respiratory health, thereby enabling their preservation and long-term storage.

[0011] In one optional implementation, obtaining the working time of the ozone disinfection device and the ozone decomposition time in the cold storage based on the ozone generation rate and the natural decay rate includes:

[0012] The final ozone concentration required for disinfection is determined based on the ozone disinfection level described above.

[0013] The working time of the ozone disinfection device and the ozone decomposition time in the cold storage are obtained based on the ozone generation rate, the natural decay rate, and the final ozone concentration.

[0014] Beneficial Effects: The final ozone concentration represents the required ozone concentration for disinfection to ensure a good disinfection effect. Different ozone disinfection levels require different final ozone concentrations. For example, in the preservation mode, since disinfection is needed for items like lychees stored in cold storage that require preservation, the required final ozone concentration needs to be higher and maintained at a higher level for a longer period. Therefore, by obtaining the working time of the ozone disinfection device and the ozone decomposition time in the cold storage based on the ozone generation rate, the natural decay rate, and the final ozone concentration, the obtained working time and ozone decomposition time in the cold storage can be more accurate and suitable, resulting in a better disinfection effect and better preservation and long-term storage of items like lychees.

[0015] In one optional implementation, the ozone disinfection mode includes a preservation mode, wherein, after controlling the ozone disinfection device to operate according to the working time and the ozone decomposition time in the preservation mode, the method further includes:

[0016] Check the surface condition of items that need to be preserved in the cold storage at preset intervals;

[0017] The working time and ozone decomposition time are adjusted according to the surface condition, and the system operates according to the adjusted working time and ozone decomposition time.

[0018] Beneficial effects: By checking the surface condition of items requiring preservation in the cold storage at preset intervals, the preservation effect can be judged by the surface condition of the items requiring preservation. The working time and ozone decomposition time can be adjusted according to the preservation effect, and the system can operate according to the adjusted working time and ozone decomposition time. This can better adapt to the actual situation of the items requiring preservation, obtain better preservation effect, and extend the storage time.

[0019] In one optional implementation, the ozone disinfection mode further includes a deep disinfection mode, which is used to operate when the cold storage is empty.

[0020] Beneficial effects: The deep disinfection mode operates when the cold storage is empty, usually during the off-season for farming, to achieve deep disinfection of the entire surface of the cold storage, preventing damage from mold and corrosion when the equipment is idle.

[0021] In one optional implementation, after obtaining the disinfection type of the cold storage, the method further includes:

[0022] If it is in routine disinfection mode, obtain the ozone safety threshold.

[0023] The discharge voltage and electrode distance of the plasma purification device are obtained based on the ozone safety threshold, and the plasma purification device is controlled to operate according to the discharge voltage and electrode distance.

[0024] Beneficial effects: Routine disinfection mode is generally used during the busy farming season. Staff can open the cold storage door at any time to store and retrieve items that need to be preserved, such as lychees. Therefore, the ozone concentration in routine disinfection mode needs to be controlled within the ozone safety threshold, which is the safe concentration of ozone. So, based on the ozone safety threshold, the discharge voltage and electrode distance of the plasma purification device are obtained, and the plasma purification device is controlled to operate according to the discharge voltage and electrode distance. This allows for disinfection in routine disinfection mode, where the plasma generated by the plasma purification device can effectively disinfect microorganisms through air circulation and inhibit the formation of colonies on the surface of fruits, while also ensuring that staff can enter the cold storage at any time.

[0025] In one alternative implementation, it further includes:

[0026] The ultraviolet disinfection device is controlled to disinfect the water collection tray of the refrigeration device.

[0027] Beneficial effects: The water collection tray is used to collect condensate from the refrigeration unit in a timely manner, preventing condensate from accumulating on the ground, equipment, or goods; controlling the ultraviolet disinfection device to disinfect the water collection tray can prevent bacteria from growing in the condensate, thereby preventing bacteria from growing in the water collection tray from affecting items that need to be preserved, such as lychees, in the cold storage, and maintaining a better preservation effect.

[0028] In one optional embodiment, the controlled ultraviolet disinfection device disinfects the water collection tray of the refrigeration device, including:

[0029] Obtain the amount of condensate in the collection pan;

[0030] If the amount of condensate is greater than zero and less than the preset amount of water, then the ultraviolet disinfection device is controlled to disinfect the water collection tray of the refrigeration device.

[0031] If the amount of condensate is greater than or equal to the preset amount of water, the ultraviolet disinfection device will stop working, and the water collection tray will drain.

[0032] Beneficial effects: When there is condensate in the collection pan and the amount of condensate is lower than the preset amount, the UV disinfection device will be controlled to disinfect the collection pan. When the amount of condensate is greater than or equal to the preset amount, the UV disinfection device will be controlled to stop working and first drain the condensate in the collection pan out of the cold storage to prevent the condensate from overflowing from the collection pan. After drainage, when condensate accumulates in the collection pan again, the UV disinfection device can be restarted for disinfection.

[0033] Secondly, the present invention also provides a cold storage facility, comprising:

[0034] Storage bins;

[0035] The refrigeration unit includes a cold air blower and a refrigeration outdoor unit. The cold air blower has a cold air outlet and a return air inlet, both of which are connected to the interior of the storage compartment.

[0036] An ultraviolet disinfection device is installed at the bottom of the air cooler;

[0037] An ozone disinfection device is installed inside the storage chamber and located at the cold air outlet;

[0038] The control module is communicatively connected to the refrigeration device, the ultraviolet disinfection device, and the ozone disinfection device, and is used to execute the above-mentioned disinfection method for the cold storage.

[0039] Beneficial effects: The operation of the refrigeration unit not only lowers the temperature inside the cold storage, providing a cooler storage environment for items requiring preservation, such as lychees, but also allows the ozone generated by the ozone disinfection device to reach the surface of these items under the influence of the cold air from the refrigeration unit. Utilizing the strong oxidizing and easily decomposable properties of ozone, it reacts with bacteria and viruses through a series of redox reactions, altering the surface electrical properties of microorganisms and causing their cell membranes to rupture and die. This effectively disinfects the surface of the items, thus preserving lychees and other items requiring preservation. The purpose of this method is to preserve items for extended periods. Simultaneously, the disinfection method for the cold storage utilizes parameters such as ozone generation rate and natural decay rate to determine the working time of the ozone disinfection device and the ozone decomposition time within the cold storage. This ensures that items requiring preservation, such as lychees, are disinfected without harming human respiratory health, thereby achieving preservation and long-term storage. Furthermore, the condensate from the air cooler is disinfected using an ultraviolet disinfection device to prevent bacterial growth, thus avoiding any impact from bacteria on the lychees and other items requiring preservation, maintaining optimal preservation.

[0040] In one optional embodiment, the cold storage further includes a plasma purification device, which is installed inside the storage compartment and located at the cold air outlet; the plasma purification device is communicatively connected to the control module.

[0041] Beneficial effects: The plasma purification device is located at the cold air outlet. It can break down the air under high pressure and generate polar active particles. Driven by the cold air from the refrigeration device, these particles are dispersed into the space inside the storage unit, achieving air disinfection throughout the storage unit.

[0042] In one optional embodiment, the refrigeration device includes a cooler fan, which has a cold air outlet and a return air inlet; the cold storage further includes:

[0043] A water collection tray is located at the bottom of the air cooler; an ultraviolet disinfection device is located above the water collection tray.

[0044] A condensate detection structure is installed on the water collection pan to detect the amount of condensate in the water collection pan; the condensate detection structure is communicatively connected to the control module.

[0045] A drain switch is installed at the drain outlet of the water collection tray, and the drain switch is communicatively connected to the control module.

[0046] Beneficial effects: The water collection tray is used to collect condensate from the refrigeration unit in a timely manner, preventing condensate from accumulating on the ground, equipment, or goods; controlling the ultraviolet disinfection device to disinfect the water collection tray can prevent bacteria from growing in the condensate, thereby preventing bacteria from the water collection tray from affecting fresh items such as lychees in the cold storage and maintaining a better preservation effect; the condensate detection structure obtains the amount of condensate in the water collection tray; if the amount of condensate is greater than zero and less than a preset amount, the ultraviolet disinfection device is controlled to disinfect the water collection tray of the refrigeration unit; if the amount of condensate is greater than or equal to the preset amount, the ultraviolet disinfection device is controlled to stop working, and the drain outlet is opened through the drain switch to drain the water from the water collection tray.

[0047] In one optional embodiment, the cold storage further includes a partition structure disposed within the storage chamber, dividing the storage chamber into a static pressure chamber and a disinfection chamber. The cold air outlet is connected to the static pressure chamber, and the return air outlet is connected to the disinfection chamber. The plasma purification device is disposed between the cold air outlet and the static pressure chamber. The partition structure is provided with an air outlet, and the ozone disinfection device is disposed at the air outlet.

[0048] Beneficial effects: The partition structure divides the storage chamber into a static pressure chamber and a disinfection chamber. The cold air from the cold air outlet first enters the static pressure chamber and then enters the disinfection chamber through the air outlet. During this process, polar active particles generated by the plasma purification device can also be introduced into the disinfection chamber, and ozone generated by the ozone disinfection device can also be introduced into the disinfection chamber, avoiding cold air backflow and ensuring the disinfection and purification effect in the disinfection chamber.

[0049] Thirdly, the present invention also provides a computer-readable storage medium storing computer instructions, which, when executed, implement the above-described disinfection method for cold storage.

[0050] Beneficial effects: The computer-readable storage medium provided by the present invention, through the cold storage disinfection method of the above-described embodiments, has all the technical effects of the above-described cold storage disinfection method. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the first process of the disinfection method for cold storage according to an embodiment of the present invention;

[0053] Figure 2 This is a schematic diagram of the second process of the disinfection method for cold storage according to an embodiment of the present invention;

[0054] Figure 3 This is a schematic diagram of the third process of the disinfection method for cold storage according to an embodiment of the present invention;

[0055] Figure 4 This is a schematic diagram of the fourth process of the disinfection method for cold storage according to an embodiment of the present invention;

[0056] Figure 5 This is a schematic diagram of the fifth process of the disinfection method for cold storage according to an embodiment of the present invention;

[0057] Figure 6 This is a schematic diagram of the sixth process of the disinfection method for cold storage according to an embodiment of the present invention;

[0058] Figure 7 This is a diagram illustrating the calculation of the natural decay rate of a cold storage facility according to an embodiment of the present invention.

[0059] Figure 8 This is a diagram illustrating the calculation of ozone generation rate in a cold storage facility according to an embodiment of the present invention.

[0060] Figure 9 Ozone curve during the preservation mode of the cold storage according to an embodiment of the present invention;

[0061] Figure 10 The ozone curve during the deep disinfection mode of the cold storage in this embodiment of the invention;

[0062] Figure 11 This is a schematic diagram of a cold storage facility according to an embodiment of the present invention.

[0063] Explanation of reference numerals in the attached figures:

[0064] 11. Air cooler; 111. Return air vent; 12. Outdoor cooling unit; 2. Ozone disinfection device; 3. Plasma purification device; 4. Water collection tray; 5. Ultraviolet disinfection device; 6. Separation structure; 7. Static pressure chamber; 8. Disinfection chamber; 41. Condensate detection structure; 42. Drain outlet. Detailed Implementation

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0066] The following is combined Figures 1 to 11 The following describes embodiments of the present invention.

[0067] According to an embodiment of the present invention, in one aspect, a method for disinfecting a cold storage facility is provided, comprising:

[0068] S1. Control the operation of the refrigeration unit in the cold storage.

[0069] The refrigeration unit generates cold air, which, through its circulation within the cold storage, lowers the temperature, allowing the cold storage to better preserve items that require preservation, such as lychees.

[0070] S2. Obtain the disinfection type of the cold storage.

[0071] Disinfection methods for cold storage facilities can include ozone disinfection and routine disinfection.

[0072] S3. If it is ozone disinfection mode, then obtain the ozone disinfection level.

[0073] The degree of ozone disinfection can represent the purpose to be achieved through ozone disinfection. For example, the degree of ozone disinfection may include a preservation mode that achieves the function of keeping food fresh, or a deep disinfection mode that performs deep disinfection on a cold storage that is empty.

[0074] S4. Obtain the corresponding ozone generation rate and natural decay rate based on the ozone elimination level.

[0075] Both ozone generation rate and natural decay rate are directly related to the ozone concentration in cold storage, and ozone concentration is an important indicator that reflects the degree of disinfection.

[0076] S5. Obtain the working time of the ozone disinfection device 2 and the ozone decomposition time in the cold storage based on the ozone generation rate and the natural decay rate, and control the operation of the ozone disinfection device 2 according to the working time and the ozone decomposition time.

[0077] The operation of the refrigeration unit not only lowers the temperature inside the cold storage, providing a cooler storage environment for items requiring preservation, such as lychees, but also allows the ozone generated by the ozone disinfection device 2 to reach the surface of these items under the influence of the cold air from the refrigeration unit. Utilizing the strong oxidizing and easily decomposable properties of ozone, it reacts with bacteria and viruses through a series of redox reactions, altering the surface electrical properties of microorganisms and causing their cell membranes to rupture and die. This effectively disinfects the surface of the items, thus achieving the goal of preserving lychees and other items requiring preservation for extended periods. Simultaneously, the disinfection method for the cold storage determines the working time of the ozone disinfection device 2 and the ozone decomposition time within the cold storage based on parameters such as ozone generation rate and natural decay rate. This ensures that the disinfection of lychees and other items requiring preservation is achieved without harming human respiratory health, thereby achieving the goal of preserving and storing these items for extended periods.

[0078] In a specific embodiment, the cold storage is a closed space.

[0079] In one embodiment, obtaining the working time of the ozone disinfection device 2 and the ozone decomposition time in the cold storage based on the ozone generation rate and the natural decay rate includes:

[0080] S511. Obtain the final ozone concentration required for disinfection based on the ozone disinfection level.

[0081] S512. Obtain the working time of the ozone disinfection device 2 and the ozone decomposition time in the cold storage based on the ozone generation rate, the natural decay rate and the final ozone concentration.

[0082] The final ozone concentration represents the required ozone concentration for disinfection to ensure a good disinfection effect. Different ozone disinfection levels require different final ozone concentrations. For example, in the preservation mode, since the disinfection needs to be carried out on items such as lychees stored in cold storage, the required final ozone concentration needs to be higher and maintained at a higher level for a longer period. Therefore, by obtaining the working time of the ozone disinfection device 2 and the ozone decomposition time in the cold storage based on the ozone generation rate, the natural decay rate, and the final ozone concentration, the obtained working time and ozone decomposition time in the cold storage can be more accurate and suitable, resulting in a better disinfection effect and better preservation and long-term storage of items such as lychees.

[0083] In one embodiment, the ozone disinfection mode includes a preservation mode. In the preservation mode, after controlling the ozone disinfection device 2 to operate according to the working time and the ozone decomposition time, the mode further includes:

[0084] S521. Check the surface condition of items that need to be preserved in the cold storage at preset intervals.

[0085] S522. Adjust the working time and ozone decomposition time according to the surface condition, and operate according to the adjusted working time and ozone decomposition time.

[0086] The surface condition of items requiring preservation in the cold storage is checked at preset intervals. The preservation effect can be judged by the surface condition of the items requiring preservation. The working time and ozone decomposition time are adjusted according to the preservation effect. The system operates according to the adjusted working time and ozone decomposition time, which can better adapt to the actual situation of the items requiring preservation, obtain better preservation effect, and extend the storage time.

[0087] In a further embodiment, the method of inspecting the surface condition of items that need to be preserved includes manual entry into the cold storage for inspection. However, when the preservation mode is in operation, people cannot enter the cold storage and must wait until the ozone decomposes to a safe concentration before entering. The safe concentration of ozone is less than or equal to 50 ppb.

[0088] Alternatively, the surface condition of items that need to be preserved can be inspected by taking real-time video of the surface.

[0089] In one embodiment, the ozone disinfection mode further includes a deep disinfection mode, which is used to operate when the cold storage is empty.

[0090] The deep disinfection mode operates when the cold storage is empty, usually during the off-season for farming, to achieve deep disinfection of the entire surface of the cold storage and prevent damage from mold and corrosion when the equipment is idle.

[0091] In a specific implementation, during the deep disinfection mode, people cannot enter the cold storage and must wait until the ozone decomposes to a safe concentration before entering. The safe concentration of ozone is less than or equal to 50 ppb.

[0092] In one embodiment, after obtaining the disinfection type of the cold storage, the method further includes:

[0093] S6. If it is the daily disinfection mode, obtain the ozone safety threshold.

[0094] S7. Obtain the discharge voltage and electrode distance of the plasma purification device 3 according to the ozone safety threshold, and control the plasma purification device 3 to operate according to the discharge voltage and electrode distance.

[0095] Routine disinfection mode is generally used during busy farming seasons. Staff can open the cold storage door at any time to store and retrieve items that need to be preserved, such as lychees. Therefore, the ozone concentration in routine disinfection mode needs to be controlled within the ozone safety threshold, which is the safe concentration of ozone. So, the discharge voltage and electrode distance of the plasma purification device 3 are obtained according to the ozone safety threshold, and the plasma purification device 3 is controlled to operate according to the discharge voltage and electrode distance. This allows for disinfection in routine disinfection mode, where the plasma generated by the plasma purification device 3 can effectively disinfect microorganisms through air circulation and inhibit the formation of colonies on the surface of fruits, while also ensuring that staff can enter the cold storage at any time.

[0096] In a further embodiment, the disinfection principle of the plasma purification device 3 is that high voltage breaks down the air, generating polar active particles, which, combined with airflow, diffuse throughout the space to achieve air disinfection throughout the space. The plasma excitation method preferably uses negative high voltage (positive high voltage can also be used), and the discharge forms include corona discharge, dielectric barrier discharge, glow discharge, etc.

[0097] In a specific implementation, during routine disinfection, the plasma purification device 3 controls the amount of ozone generated within the ozone safety threshold by adjusting the discharge voltage and electrode distance.

[0098] In a preferred embodiment, the ozone safety threshold is 50 ppb.

[0099] In one embodiment, the disinfection method for the cold storage also includes:

[0100] S8. Control the ultraviolet disinfection device 5 to disinfect the water collection tray 4 of the refrigeration device.

[0101] The water collection tray 4 is used to collect condensate from the refrigeration unit in a timely manner, preventing condensate from accumulating on the ground, equipment, or goods. The ultraviolet disinfection device 5 is used to disinfect the water collection tray 4, which can prevent bacteria from growing in the condensate in the water collection tray 4, thereby preventing bacteria from growing in the water collection tray 4 from affecting items that need to be preserved, such as lychees, in the cold storage, and maintaining a better preservation effect.

[0102] In a specific implementation, the temperature inside the cold storage is usually much lower than the dew point temperature of the outside air, causing moisture in the air to condense into water droplets on the equipment surface. If not collected in time, the condensate may accumulate on the ground, equipment, or goods. In this embodiment, the condensate collection tray 4 can collect the condensate, preventing it from accumulating on the ground, equipment, or goods.

[0103] In one embodiment, the ultraviolet disinfection device 5 disinfects the water collection tray 4 of the refrigeration device, including:

[0104] S81. Obtain the amount of condensate in the water collection tray 4;

[0105] S82. If the amount of condensate is greater than zero and less than the preset amount of water, then control the ultraviolet disinfection device 5 to disinfect the water collection tray 4 of the refrigeration device.

[0106] S83. If the amount of condensate is greater than or equal to the preset amount of water, the ultraviolet disinfection device 5 is controlled to stop working, and the water collection tray 4 is controlled to drain water.

[0107] When there is condensate in the water collection pan 4 and the amount of condensate is lower than the preset amount, the ultraviolet disinfection device 5 is controlled to disinfect the water collection pan 4. When the amount of condensate is greater than or equal to the preset amount, the ultraviolet disinfection device 5 is controlled to stop working and first drain the condensate in the water collection pan 4 out of the cold storage to prevent the condensate from overflowing from the water collection pan 4. After draining, when condensate accumulates again in the water collection pan 4, the ultraviolet disinfection device 5 can be restarted for disinfection.

[0108] In a specific embodiment, for 20m 3 In the cold storage room, ozone disinfection device 2 is activated in ozone disinfection mode. An ozone concentration monitoring structure provides feedback on changes in ozone concentration within the cold storage room. The sampling frequency of the ozone concentration monitoring structure can be 1 minute / time. The recorded monitoring data represents the actual ozone concentration in the cold storage room after ozone generation and natural decay. After a certain period, ozone disinfection device 2 is turned off, and a graph is plotted based on the recorded monitoring data, as shown below. Figure 7 As shown, the natural decay rate of ozone is obtained based on the slope of the data trend line during the decay phase; by multiplying the natural decay rate by the unit time and adding the actual ozone concentration inside the chamber, the ozone production curve under ideal conditions without decay is derived, as shown. Figure 8 As shown, the slope of the trend line is the ozone generation rate.

[0109] Methods for obtaining ozone decomposition rate include: testing the ozone concentration change curve of the cold storage over time using an ozone reduction mesh, such as... Figure 9 and Figure 10 As shown, at this time, the ozone concentration in the cold storage must be greater than 500 ppb and the ozone disinfection device 2 must not be working. The slope of the concentration curve trend line is the ozone decomposition rate.

[0110] In one specific embodiment, based on literature and experimental verification, the ozone concentration is typically 1 ppm in the lychee preservation mode and 3 ppm to 5 ppm in the deep disinfection mode. In this embodiment, 5 ppm is selected. Based on the ozone generation rate and natural decay rate mentioned above, the time required for the final ozone concentration to be 1 ppm and 5 ppm can be calculated. Then, based on the ozone decomposition rate, the time required for it to decompose to a safe concentration (≤50 ppb) is determined, thereby establishing the operating logic. Specific data are shown in Table 1.

[0111] Table 1. Working Time and Decomposition Time in Different Ozone Disinfection Modes

[0112] Ozone disinfection mode Production rate Attenuation rate Working hours Ozone decomposition rate Decomposition Time Freshness preservation mode 17.83 0.0175 2h 0.09775 60min Deep disinfection mode 17.83 0.003 10h 0.08325 90min

[0113] According to an embodiment of the present invention, another aspect provides a cold storage facility, including a storage compartment, a refrigeration unit, an ultraviolet disinfection device 5, an ozone disinfection device 2, and a control module. The refrigeration unit includes a cold air blower 11 and a refrigeration outdoor unit 12. The cold air blower 11 has a cold air outlet and a return air inlet 111, both of which are connected to the interior of the storage compartment. The ozone disinfection device 2 is disposed inside the storage compartment and located at the cold air outlet. The control module is communicatively connected to the refrigeration unit, the ultraviolet disinfection device 5, and the ozone disinfection device 2, and is used to execute the above-described disinfection method for the cold storage facility. The ozone generated by the ozone disinfection device 2 flows over the surface of items requiring preservation, such as lychees, driven by the cold air from the cold air outlet, disinfecting them, and then returns to the cold air blower 11 for refrigeration through the return air inlet 111.

[0114] The above-mentioned disinfection methods for cold storage include:

[0115] S1. Control the operation of the refrigeration unit in the cold storage.

[0116] The refrigeration unit generates cold air, which, through its circulation within the cold storage, lowers the temperature, allowing the cold storage to better preserve items that require preservation, such as lychees.

[0117] S2. Obtain the disinfection type of the cold storage.

[0118] Disinfection methods for cold storage facilities can include ozone disinfection and routine disinfection.

[0119] S3. If it is ozone disinfection mode, then obtain the ozone disinfection level.

[0120] The degree of ozone disinfection can represent the purpose to be achieved through ozone disinfection. For example, the degree of ozone disinfection may include a preservation mode that achieves the function of keeping food fresh, or a deep disinfection mode that performs deep disinfection on a cold storage that is empty.

[0121] S4. Obtain the corresponding ozone generation rate and natural decay rate based on the ozone elimination level.

[0122] Both ozone generation rate and natural decay rate are directly related to the ozone concentration in cold storage, and ozone concentration is an important indicator that reflects the degree of disinfection.

[0123] S5. Obtain the working time of the ozone disinfection device 2 and the ozone decomposition time in the cold storage based on the ozone generation rate and the natural decay rate, and control the operation of the ozone disinfection device 2 according to the working time and the ozone decomposition time.

[0124] The refrigeration unit not only lowers the temperature inside the cold storage, providing a cooler storage environment for items like lychees that require preservation, but also allows the ozone generated by the ozone disinfection device 2 to reach the surface of these items under the influence of the cold air from the refrigeration unit. Utilizing the strong oxidizing and easily decomposable properties of ozone, it reacts with bacteria and viruses through a series of redox reactions, altering the surface electrical properties of microorganisms and causing their cell membranes to rupture and die. This effectively disinfects the surface of the items, thus preserving lychees and other items that require preservation for extended periods. The purpose of time preservation is to ensure the sterilization of items such as lychees in the cold storage. Simultaneously, the disinfection method for the cold storage determines the working time of the ozone disinfection device 2 and the ozone decomposition time within the cold storage based on parameters such as ozone generation rate and natural decay rate. This ensures the disinfection of items requiring preservation, such as lychees, without harming human respiratory health, thereby achieving the preservation and long-term storage of these items. Furthermore, the ultraviolet disinfection device 5 disinfects the condensate from the air cooler 11, preventing the growth of bacteria in the condensate and thus avoiding any impact from bacteria on the lychees and other items requiring preservation within the cold storage, maintaining a good preservation effect.

[0125] In a specific embodiment, the refrigeration device includes a cooler 11 and an outdoor refrigeration unit 12. The cooler 11 has a cold air outlet and a return air inlet 111. The cooler 11 can be installed above one side of the storage unit, and the outdoor refrigeration unit 12 can be spaced below the cooler 11. The ozone disinfection device 2 can be an ozone generator. The communication connection includes electrical connections via connecting cables and network connections via wireless networks, etc.

[0126] In one embodiment, the cold storage also includes a plasma purification device 3, which is installed inside the storage compartment and located at the cold air outlet; the plasma purification device 3 is communicatively connected to the control module.

[0127] The plasma purification device 3 is located at the cold air outlet. It can break down the air under high pressure to generate polar active particles. Driven by the cold air from the refrigeration device, these particles are dispersed into the space inside the storage unit, thus achieving air disinfection throughout the storage unit.

[0128] In one embodiment, the refrigeration unit includes a cooler 11, which has a cold air outlet and a return air inlet 111; the cold storage also includes a water collection tray 4 and an ultraviolet disinfection device 5. The water collection tray 4 is located at the bottom of the cooler 11; the ultraviolet disinfection device 5 is located above the water collection tray 4, and the ultraviolet disinfection device 5 is communicatively connected to the control module.

[0129] The water collection tray 4 is used to collect condensate from the refrigeration unit in a timely manner, preventing condensate from accumulating on the ground, equipment, or goods. The ultraviolet disinfection device 5 is used to disinfect the water collection tray 4, which can prevent bacteria from growing in the condensate in the water collection tray 4, thereby preventing bacteria from growing in the water collection tray 4 from affecting items that need to be preserved, such as lychees, in the cold storage, and maintaining a better preservation effect.

[0130] In a preferred embodiment, the water collection tray 4 can be installed on top of the outdoor unit 12, and the ultraviolet disinfection device 5 can be installed at the bottom of the air cooler 11; this saves space while effectively collecting condensate and performing disinfection. The ultraviolet disinfection device 5 includes an ultraviolet lamp.

[0131] In one embodiment, the cold storage further includes a condensate detection structure 41 and a drain switch; the condensate detection structure 41 is disposed on the water collection pan 4 and is used to detect the amount of condensate in the water collection pan 4; the condensate detection structure 41 is communicatively connected to the control module; the drain switch is disposed at the drain outlet 42 of the water collection pan 4 and is communicatively connected to the control module.

[0132] The condensate detection structure 41 obtains the amount of condensate in the water collection tray 4; if the amount of condensate is greater than zero and less than the preset amount of water, the ultraviolet disinfection device 5 is controlled to disinfect the water collection tray 4 of the refrigeration device; if the amount of condensate is greater than or equal to the preset amount of water, the ultraviolet disinfection device 5 is controlled to stop working and the drain outlet 42 is opened through the drain switch to drain the water from the water collection tray 4.

[0133] In a specific implementation, the condensate detection structure 41 is a water level sensor, and the preset water volume is the preset water level line on the water collection pan 4.

[0134] In one embodiment, the cold storage further includes a partition structure 6, which is disposed within the storage chamber and divides the storage chamber into a static pressure chamber 7 and a disinfection chamber 8. The cold air outlet is connected to the static pressure chamber 7, and the return air vent 111 is connected to the disinfection chamber 8. The plasma purification device 3 is disposed between the cold air outlet and the static pressure chamber 7. The partition structure 6 is provided with an air outlet, and the ozone disinfection device 2 is disposed at the air outlet.

[0135] The partition structure 6 divides the storage chamber into a static pressure chamber 7 and a disinfection chamber 8. The cold air from the cold air outlet first enters the static pressure chamber 7 and then enters the disinfection chamber 8 through the air outlet. During this process, polar active particles generated by the plasma purification device 3 can also be introduced into the disinfection chamber 8, and ozone generated by the ozone disinfection device 2 can be introduced into the disinfection chamber 8 to avoid cold air backflow and ensure the disinfection and purification effect in the disinfection chamber 8.

[0136] In a specific implementation, the partition structure 6 is a partition plate with multiple air outlets evenly distributed on the partition plate.

[0137] According to an embodiment of the present invention, in another aspect, a computer-readable storage medium is also provided, the computer-readable storage medium storing computer instructions, which, when executed, implement the above-described disinfection method for cold storage.

[0138] The computer-readable storage medium provided by the present invention, through the cold storage disinfection method of the above-described embodiments, has all the technical effects of the above-described cold storage disinfection method.

[0139] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A disinfection method for cold storage, characterized in that, include: Control the operation of the refrigeration unit in the cold storage; Obtain the type of disinfection required for the cold storage facility; If it is ozone disinfection mode, then obtain the ozone disinfection level; Based on the ozone elimination level, obtain the corresponding ozone generation rate and natural decay rate; The working time of the ozone disinfection device (2) and the ozone decomposition time in the cold storage are obtained according to the ozone generation rate and the natural decay rate, and the operation of the ozone disinfection device (2) is controlled according to the working time and the ozone decomposition time.

2. The disinfection method for cold storage according to claim 1, characterized in that, The process of obtaining the working time of the ozone disinfection device (2) and the ozone decomposition time in the cold storage based on the ozone generation rate and natural decay rate includes: The final ozone concentration required for disinfection is determined based on the ozone disinfection level described above. The working time of the ozone disinfection device (2) and the ozone decomposition time in the cold storage are obtained based on the ozone generation rate, the natural decay rate and the final ozone concentration.

3. The disinfection method for cold storage according to claim 1 or 2, characterized in that, The ozone disinfection mode includes a preservation mode. In the preservation mode, after controlling the ozone disinfection device (2) to operate according to the working time and the ozone decomposition time, the mode further includes: Check the surface condition of items that need to be preserved in the cold storage at preset intervals; The working time and ozone decomposition time are adjusted according to the surface condition, and the system operates according to the adjusted working time and ozone decomposition time.

4. The disinfection method for cold storage according to claim 1 or 2, characterized in that, The ozone disinfection mode also includes a deep disinfection mode, which is used when the cold storage is empty.

5. The disinfection method for cold storage according to claim 1, characterized in that, After obtaining the disinfection type of the cold storage, the method also includes: If it is in routine disinfection mode, obtain the ozone safety threshold. The discharge voltage and electrode distance of the plasma purification device (3) are obtained according to the ozone safety threshold, and the plasma purification device (3) is controlled to operate according to the discharge voltage and electrode distance.

6. The disinfection method for a cold storage facility according to any one of claims 1, 2, or 5, characterized in that, Also includes: The ultraviolet disinfection device (5) is controlled to disinfect the water collection tray (4) of the refrigeration device.

7. The disinfection method for cold storage according to claim 6, characterized in that, The ultraviolet disinfection device (5) disinfects the water collection tray (4) of the refrigeration device, including: Obtain the amount of condensate in the water collection pan (4); If the amount of condensate is greater than zero and less than the preset amount of water, then the ultraviolet disinfection device (5) is controlled to disinfect the water collection tray (4) of the refrigeration device; If the amount of condensate is greater than or equal to the preset amount of water, the ultraviolet disinfection device (5) is controlled to stop working, and the water collection tray (4) is controlled to drain water.

8. A cold storage facility, characterized in that, include: Storage bins; The refrigeration unit includes a cold air blower (11) and a refrigeration outdoor unit (12). The cold air blower (11) has a cold air outlet and a return air inlet (111). Both the cold air outlet and the return air inlet (111) are connected to the interior of the storage compartment. An ultraviolet disinfection device (5) is installed at the lower part of the air cooler (11); An ozone disinfection device (2) is installed inside the storage chamber and located at the cold air outlet; The control module is communicatively connected to the refrigeration device, the ultraviolet disinfection device (5), and the ozone disinfection device (2), and is used to execute the disinfection method of the cold storage according to any one of claims 1 to 7.

9. The cold storage facility according to claim 8, characterized in that, It also includes a plasma purification device (3), which is installed in the storage chamber and located at the cold air outlet; the plasma purification device (3) is communicatively connected to the control module.

10. The cold storage facility according to claim 8, characterized in that, The cold storage also includes: A water collection tray (4) is located at the bottom of the air cooler (11); the ultraviolet disinfection device (5) is located above the water collection tray (4); A condensate detection structure (41) is installed on the water collection pan (4) to detect the amount of condensate in the water collection pan (4); the condensate detection structure (41) is communicatively connected to the control module; A drain switch is installed at the drain outlet (42) of the water collection tray (4), and the drain switch is communicatively connected to the control module.

11. The cold storage facility according to claim 9, characterized in that, It also includes a partition structure (6) set inside the storage chamber, which divides the storage chamber into a static pressure chamber (7) and a disinfection chamber (8). The cold air outlet is connected to the static pressure chamber (7), and the return air vent (111) is connected to the disinfection chamber (8). The plasma purification device (3) is set between the cold air outlet and the static pressure chamber (7). The partition structure (6) is provided with an air outlet, and the ozone disinfection device (2) is set at the air outlet.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions, which, when executed, implement the disinfection method for the cold storage as described in any one of claims 1 to 7.

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