A refrigerator sterilization control method, a computer readable storage medium and a refrigerator

Abstract

The application discloses a refrigerator sterilization control method, a computer readable storage medium and a refrigerator. The refrigerator is provided with a sterilization device. The sterilization control method comprises the following steps: dividing a sterilization process into a defrosting stage, a refrigeration stage before the defrosting stage and a sterilization stage after the defrosting stage; when being in the refrigeration stage, controlling the sterilization device in the refrigerator to be at a highest opening frequency; when being in the defrosting stage, controlling the sterilization device to be at a lowest opening frequency, and increasing the opening frequency of the sterilization device according to the evaporator temperature and the compartment humidity in the refrigerator; when being in the sterilization stage, controlling the sterilization device to be at the highest opening frequency, and decreasing the opening frequency of the sterilization device according to the evaporator temperature and the compartment humidity in the refrigerator. Compared with the prior art, the application can effectively inhibit the breeding of bacteria, and reduce the peculiar smell generated by the operation of the sterilization device.

Description

Technical Field

[0001] This invention relates to the field of refrigeration, and in particular to a method for controlling sterilization in a refrigerator, a computer-readable storage medium, and a refrigerator. Background Technology

[0002] Refrigerators primarily rely on low temperatures to preserve food. However, low temperatures can only slow down the reproduction rate of microorganisms; they cannot completely kill the microorganisms in food. Under certain conditions, microorganisms will find a space to survive and multiply rapidly, causing food spoilage and food safety issues. These problems are particularly pronounced in refrigerator compartments such as the crisper drawer and the fruit and vegetable compartment, where the temperature does not reach below zero.

[0003] Some refrigerators are equipped with sterilization devices, such as ion generators. When the ion generator is working, it produces ozone, which smells like spoiled food and is very unpleasant. When the refrigerator is in defrost mode, the fan cannot be turned on, and the ion generator continues to work, which can easily lead to ozone accumulation, causing an odor when the refrigerator is opened later. Current methods often involve stopping the sterilization device during defrost mode. At this time, harmful bacteria such as E. coli and mold can multiply on the surface of food. Moreover, after defrosting and cooling, the evaporator temperature has not completely dropped. The air blown out at this time not only carries a lot of moisture generated during defrosting, but also provides a breeding ground for harmful bacteria, accelerating food spoilage.

[0004] Therefore, how to design a refrigerator sterilization control method, a computer-readable storage medium, and a refrigerator that can effectively inhibit bacterial growth is a technical problem that the industry urgently needs to solve. Summary of the Invention

[0005] To address the problem of poor sterilization effect of existing refrigerator sterilization devices, this invention proposes a refrigerator sterilization control method, a computer-readable storage medium, and a refrigerator.

[0006] The technical solution of this invention is to propose a refrigerator sterilization control method, wherein the refrigerator has a built-in sterilization device, and the refrigerator sterilization control method includes:

[0007] The sterilization process is divided into a defrosting stage, a refrigeration stage before the defrosting stage, and a sterilization stage after the defrosting stage.

[0008] When the refrigerator is in the cooling phase, the sterilization device in the refrigerator is controlled to operate at the highest frequency.

[0009] During the defrosting stage, the sterilization device is controlled to operate at the lowest frequency, and the frequency of operation of the sterilization device is increased according to the evaporator temperature and compartment humidity in the refrigerator.

[0010] When in the sterilization stage, the sterilization device is controlled to operate at the highest frequency, and the frequency of operation of the sterilization device is reduced according to the evaporator temperature and compartment humidity in the refrigerator.

[0011] This invention divides the sterilization process into three stages. During the cooling stage, the refrigerator fan is on, effectively removing ozone generated by the sterilization device. Therefore, the sterilization device is set to its highest operating frequency during this stage to ensure effective sterilization. During the defrosting stage, the refrigerator fan cannot be turned on. This invention sets the sterilization device to its lowest operating frequency. Although ozone is still generated, the amount is small, and due to its water-soluble nature, it does not produce any odor. Furthermore, during the defrosting stage, this invention dynamically adjusts the operating frequency of the sterilization device based on evaporator temperature and compartment humidity to ensure its effectiveness and prevent excessive growth of harmful bacteria. During the sterilization stage, since the evaporator temperature has not completely decreased after the defrosting stage, it provides a breeding ground for harmful bacteria. This invention sets the sterilization device's activation frequency to the highest frequency initially, which can effectively prevent bacterial growth. At the same time, as the evaporator temperature and compartment humidity decrease, the refrigerator's internal environment will no longer be suitable for the growth of harmful bacteria. This invention then dynamically reduces the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity, which can effectively prevent the generation of odors while ensuring the sterilization effect, and at the same time saves energy consumption generated by the sterilization device to a certain extent.

[0012] Furthermore, during the cooling phase, the sterilization device is normally open at its highest operating frequency.

[0013] During the cooling phase, since sterilization has not yet been performed, this invention sets the activation frequency of the sterilization device to a constantly open state, which can maximize the sterilization effect inside the refrigerator.

[0014] Furthermore, during the cooling phase, the refrigerator sterilization control method further includes:

[0015] The refrigerator compartment temperature is monitored in real time. When the cooling stage is activated for a first preset duration, it is determined whether the compartment temperature has reached a first threshold temperature.

[0016] If so, the cooling stage ends and the defrosting stage begins;

[0017] If not, the cooling phase is maintained until the room temperature reaches the first threshold temperature.

[0018] This invention provides an accurate switching indicator for the cooling and defrosting stages, enabling timely defrosting inside the refrigerator and preventing frost from obstructing the flow of cold air, which would lead to a decrease in cooling efficiency.

[0019] Furthermore, the defrosting stage includes a first defrosting stage. During the first defrosting stage, the activation frequency of the sterilization device includes a first activation frequency, a second activation frequency, and a third activation frequency. The first activation frequency is the lowest activation frequency, the second activation frequency is higher than the first activation frequency, and the third activation frequency is higher than the second activation frequency.

[0020] Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0021] When the evaporator temperature is less than the second threshold temperature and the room humidity is less than the first threshold humidity, the opening frequency of the sterilization device is controlled to the first opening frequency.

[0022] When the evaporator temperature is greater than the second threshold temperature and the room humidity is less than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency.

[0023] When the evaporator temperature is lower than the second threshold temperature and the humidity in the compartment is higher than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency.

[0024] When the evaporator temperature is greater than the second threshold temperature and the chamber humidity is greater than the first threshold humidity, the operating frequency of the sterilization device is increased to the third operating frequency.

[0025] Since the sterilization device is always on during the cooling stage, it can kill most of the harmful bacteria in the refrigerator. Therefore, the number of harmful bacteria in the refrigerator is the lowest when the defrosting stage begins. In the first defrosting stage, this invention sets the opening time of the sterilization device to the lowest frequency, which can minimize ozone generation and avoid odors while ensuring basic sterilization effect. At the same time, this invention also dynamically adjusts the opening frequency of the sterilization device in combination with the evaporator temperature and the humidity of the compartment, so that the sterilization effect of the sterilization device can change according to the operating conditions of the refrigerator and avoid the growth of harmful bacteria.

[0026] Furthermore, the defrosting stage also includes a second defrosting stage. In the second defrosting stage, the opening frequency of the sterilization device includes a third opening frequency, a fourth opening frequency, and a fifth opening frequency. The third opening frequency is the lowest opening frequency, the fourth opening frequency is higher than the third opening frequency, and the fifth opening frequency is higher than the fourth opening frequency.

[0027] Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0028] When the evaporator temperature is less than the third threshold temperature and the room humidity is less than the second threshold humidity, the sterilization device is controlled to open at the third opening frequency.

[0029] When the evaporator temperature is greater than the third threshold temperature and the room humidity is less than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency.

[0030] When the evaporator temperature is lower than the third threshold temperature and the humidity in the compartment is higher than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency.

[0031] When the evaporator temperature is greater than the third threshold temperature and the chamber humidity is greater than the second threshold humidity, the operating frequency of the sterilization device is increased to the fifth operating frequency.

[0032] As the defrosting process begins, the temperature inside the refrigerator starts to rise, which can lead to the growth of harmful bacteria. In the second defrosting stage, this invention sets the minimum operating frequency higher than that in the first defrosting stage. This allows the sterilization effect of the sterilization device to better match the changing conditions inside the refrigerator. At the same time, in this second defrosting stage, the operating frequency of the sterilization device is dynamically adjusted from the minimum operating frequency. This ensures the sterilization effect while minimizing the odor caused by ozone generated during the operation of the sterilization device.

[0033] Furthermore, the defrosting stage also includes a third defrosting stage. In the third defrosting stage, the opening frequency of the sterilization device includes a fifth opening frequency, a sixth opening frequency, and a seventh opening frequency. The fifth opening frequency is the lowest opening frequency, the sixth opening frequency is higher than the fifth opening frequency, and the seventh opening frequency is higher than the sixth opening frequency.

[0034] Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0035] When the evaporator temperature is less than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the opening frequency of the sterilization device is controlled to the fifth opening frequency.

[0036] When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency.

[0037] When the evaporator temperature is less than the fourth threshold temperature and the humidity in the compartment is greater than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency.

[0038] When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is greater than the third threshold humidity, the opening frequency of the sterilization device is increased to the seventh opening frequency.

[0039] As the defrosting process begins, the temperature inside the refrigerator starts to rise, which can lead to the growth of harmful bacteria. In the third defrosting stage, this invention sets the minimum operating frequency higher than that in the second defrosting stage. This allows the sterilization effect of the sterilization device to better match the changing conditions inside the refrigerator. At the same time, in this third defrosting stage, the operating frequency of the sterilization device is dynamically adjusted from the minimum operating frequency. This ensures the sterilization effect while minimizing the odor caused by ozone generated during the operation of the sterilization device.

[0040] Furthermore, the defrosting stage also includes a fourth defrosting stage. In the fourth defrosting stage, the opening frequency of the sterilization device includes a seventh opening frequency and an eighth opening frequency, and the seventh opening frequency is the lowest opening frequency, while the eighth opening frequency is higher than the seventh opening frequency.

[0041] Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0042] When the humidity of the room is less than the fourth threshold humidity, the opening frequency of the sterilization device is controlled to the seventh opening frequency;

[0043] When the humidity of the room is greater than the fourth threshold humidity, the opening frequency of the sterilization device is increased to the eighth opening frequency until defrosting is completed.

[0044] The fourth defrosting stage is the last part of the defrosting process. During this period, the refrigerator is the longest away from the end of the cooling stage, and there are more harmful bacteria growing inside the refrigerator. Therefore, the minimum opening frequency set by this invention is the highest among the four defrosting stages, which can minimize the growth of harmful bacteria and maximize the sterilization effect. At the same time, when the humidity in the compartment is higher than the fourth threshold humidity, that is, when it is suitable for the growth of harmful bacteria, the opening time of the sterilization device is further increased until defrosting is completed. This can maximize sterilization while limiting the generation of odors from ozone.

[0045] Furthermore, the first activation frequency is five seconds per minute, the second activation frequency is ten seconds per minute, the third activation frequency is fifteen seconds per minute, the fourth activation frequency is twenty seconds per minute, the fifth activation frequency is twenty-five seconds per minute, the sixth activation frequency is thirty seconds per minute, the seventh activation frequency is thirty-five seconds per minute, and the eighth activation frequency is forty seconds per minute.

[0046] This invention divides the activation frequency of the sterilization device during the defrosting stage into multiple stages. Compared with the traditional solution of always turning on the sterilization device or directly turning off the sterilization device, it increases variability and adaptability. It can dynamically adapt and adjust the sterilization effect according to changes in the refrigerator's internal environment to avoid bacterial growth. At the same time, it can minimize the odor caused by ozone generated by the sterilization device without affecting the current sterilization effect.

[0047] Furthermore, the start duration of the first defrosting stage, the second defrosting stage, and the third defrosting stage is the same, and the first defrosting stage precedes the second defrosting stage, the second defrosting stage precedes the third defrosting stage, the third defrosting stage precedes the fourth defrosting stage, and the fourth defrosting stage is the stage from the end of the third defrosting stage to the completion of defrosting.

[0048] During the defrosting stage, the temperature and humidity inside the refrigerator gradually increase, which becomes increasingly conducive to the growth of harmful bacteria. This invention divides the defrosting stage into four stages, which can adapt to the changes in refrigerator environmental parameters during the defrosting stage and adjust the different control logics of the sterilization device accordingly. This allows the sterilization effect of the sterilization device to best match the environmental parameters inside the refrigerator, thereby reducing odors and suppressing the growth of harmful bacteria as much as possible.

[0049] Furthermore, the sterilization stage includes a first sterilization stage, in which the sterilization device is maintained at the highest opening frequency, which is a normally open state.

[0050] When the defrosting stage has just ended and the sterilization stage has begun, the evaporator temperature has not yet completely dropped. At this time, the environment inside the refrigerator is most conducive to the growth of harmful bacteria. In the first sterilization stage, this invention sets the highest opening frequency to a constantly open state, which allows the sterilization device to be in the highest sterilization state and effectively inhibits the growth of harmful bacteria in this stage.

[0051] Furthermore, the sterilization stage also includes a second sterilization stage. In the second sterilization stage, the opening frequency of the sterilization device includes a ninth opening frequency, a tenth opening frequency, and an eleventh opening frequency. The ninth opening frequency is the highest opening frequency, the tenth opening frequency is lower than the ninth opening frequency, and the eleventh opening frequency is lower than the tenth opening frequency.

[0052] Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0053] When the evaporator temperature is greater than the fifth threshold temperature and the chamber humidity is greater than the fifth threshold humidity, the opening frequency of the sterilization device is controlled to the ninth opening frequency.

[0054] When the evaporator temperature is greater than the fifth threshold temperature and the room humidity is less than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency.

[0055] When the evaporator temperature is lower than the fifth threshold temperature and the room humidity is higher than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency.

[0056] When the evaporator temperature is less than the fifth threshold temperature and the room humidity is less than the fifth threshold humidity, the operating frequency of the sterilization device is reduced to the eleventh operating frequency.

[0057] After the defrosting stage ends and the sterilization stage begins, the refrigerator will start cooling again. During this time, the fan inside the refrigerator will remain on. As the sterilization stage proceeds, the harmful bacteria inside the refrigerator will gradually decrease. This invention first sets the operating frequency of the sterilization device to the highest operating frequency, and then gradually reduces the operating frequency of the sterilization device according to the evaporator temperature and the humidity of the compartment. This allows the operating frequency of the sterilization device to decrease as the harmful bacteria decrease. Under these conditions, the sterilization device can not only ensure an effective sterilization effect, but also save operating time to the greatest extent, thus achieving energy saving and odor reduction to a certain extent.

[0058] Furthermore, the sterilization stage also includes a third sterilization stage. In the third sterilization stage, the opening frequency of the sterilization device includes an eleventh opening frequency, a twelfth opening frequency, and a thirteenth opening frequency. The eleventh opening frequency is the highest opening frequency, the twelfth opening frequency is lower than the eleventh opening frequency, and the thirteenth opening frequency is lower than the twelfth opening frequency.

[0059] Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0060] When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is greater than the sixth threshold humidity, the opening frequency of the sterilization device is controlled to the eleventh opening frequency.

[0061] When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is less than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency.

[0062] When the evaporator temperature is lower than the sixth threshold temperature and the room humidity is higher than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency.

[0063] When the evaporator temperature is less than the sixth threshold temperature and the room humidity is less than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the thirteenth opening frequency.

[0064] As the sterilization stage is carried out, the harmful bacteria in the refrigerator gradually decrease. In the third sterilization stage, the maximum opening frequency is set lower than that in the second sterilization stage. This allows the sterilization effect of the sterilization device to better match the changes in the working conditions inside the refrigerator. At the same time, in this third sterilization stage, the opening frequency of the sterilization device is dynamically adjusted from the maximum opening frequency. This can minimize the opening frequency of the sterilization device while ensuring the sterilization effect, thereby minimizing the generation of odors and achieving energy-saving effects.

[0065] Furthermore, the sterilization stage also includes a fourth sterilization stage, in which the opening frequency of the sterilization device includes a thirteenth opening frequency and a fourteenth opening frequency, and the thirteenth opening frequency is the highest opening frequency, while the fourteenth opening frequency is lower than the thirteenth opening frequency.

[0066] Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes:

[0067] Whether the refrigeration conditions are met is determined based on the evaporator temperature and the humidity of the compartment in the refrigerator.

[0068] If not, the opening frequency of the sterilization device is controlled to the thirteenth opening frequency;

[0069] If so, the opening frequency of the sterilization device is reduced to the fourteenth opening frequency, and the sterilization process ends after the second preset duration is started in the fourth sterilization stage.

[0070] The fourth sterilization stage is the last stage of the entire sterilization process. During this stage, the number of harmful bacteria in the refrigerator is the lowest. Therefore, although the present invention still adjusts the opening frequency of the sterilization device downward from the highest opening frequency, the opening frequency in the fourth sterilization stage is much lower than the opening frequency in the first sterilization stage. At this time, the sterilization ability of the sterilization device not only matches the number of harmful bacteria in the refrigerator at this time, but also minimizes the opening frequency of the sterilization device, reduces the generation of odors, and saves energy.

[0071] Furthermore, the ninth activation frequency is 50 seconds per minute, the tenth activation frequency is 45 seconds per minute, the eleventh activation frequency is 40 seconds per minute, the twelfth activation frequency is 35 seconds per minute, the thirteenth activation frequency is 30 seconds per minute, and the fourteenth activation frequency is 20 seconds per minute.

[0072] This invention divides the frequency of the sterilization device's activation during the sterilization phase into multiple stages. Compared to traditional solutions that either keep the sterilization device constantly on or turn it off directly, this invention increases variability and adaptability. It can dynamically adjust the sterilization effect based on changes in the refrigerator's internal environment to prevent bacterial growth. Furthermore, it can minimize odors caused by ozone generated during the sterilization device's operation and achieve energy-saving effects without affecting the current sterilization effect.

[0073] Furthermore, the activation duration of the first sterilization stage, the second sterilization stage, and the third sterilization stage is the same, and the first sterilization stage precedes the second sterilization stage, the second sterilization stage precedes the third sterilization stage, the third sterilization stage precedes the fourth sterilization stage, and the fourth sterilization stage is from the end of the third sterilization stage to the end of the sterilization process.

[0074] During the sterilization stage, the number of harmful bacteria in the refrigerator gradually decreases. This invention divides the sterilization stage into four stages, which can adapt to changes in the refrigerator's environmental parameters during the sterilization stage by adjusting the different control logics of the sterilization device. This allows the sterilization effect of the sterilization device to best match the environmental parameters inside the refrigerator. While ensuring the sterilization effect of the sterilization device, the frequency of its operation can be reduced as much as possible, thereby reducing odors and saving energy.

[0075] The present invention also proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described refrigerator sterilization control method.

[0076] The present invention also proposes a refrigerator having the aforementioned computer-readable storage medium.

[0077] Compared with the prior art, the present invention has at least the following beneficial effects:

[0078] This invention divides the sterilization process into three stages. During the cooling stage, the fan inside the refrigerator is turned on, which can effectively remove the ozone generated when the sterilization device is working. Therefore, this process sets the sterilization device to the highest operating frequency, which can effectively ensure the sterilization effect inside the refrigerator.

[0079] During the defrosting stage, the refrigerator fan cannot be turned on. This invention sets the sterilization device to the lowest operating frequency. Although ozone is produced, the amount produced is small and, due to the water-soluble nature of ozone, no odor is produced. At the same time, during the defrosting stage, this invention also dynamically adjusts the operating frequency of the sterilization device in conjunction with the evaporator temperature and the humidity of the compartment to ensure the sterilization effect of the sterilization device and avoid excessive growth of harmful bacteria during the defrosting stage.

[0080] During the sterilization stage, since the evaporator temperature has not completely decreased after the defrosting stage, it provides a breeding ground for harmful bacteria. This invention sets the sterilization device's activation frequency to the highest frequency initially, which can effectively prevent bacterial growth. At the same time, as the evaporator temperature and compartment humidity decrease, the refrigerator's internal environment will no longer be suitable for the growth of harmful bacteria. This invention then dynamically reduces the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity, which can effectively prevent the generation of odors while ensuring the sterilization effect, and at the same time saves energy consumption generated by the sterilization device to a certain extent. Attached Figure Description

[0081] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0082] Figure 1 This is a schematic diagram of the refrigerator structure in this invention;

[0083] Figure 2 This is the overall control flow of the refrigerator sterilization control method in this invention;

[0084] Figure 3 This is the control process for the first defrosting stage in this invention;

[0085] Figure 4 This is the control process for the second defrosting stage in this invention;

[0086] Figure 5 This is the control process for the third defrosting stage in this invention;

[0087] Figure 6 This is the control process for the fourth defrosting stage in this invention;

[0088] Figure 7 This is the control process for the first sterilization stage in this invention;

[0089] Figure 8 This is the control process for the second sterilization stage in this invention;

[0090] Figure 9 This is the control process for the third sterilization stage in this invention;

[0091] Figure 10 This is the control process for the fourth sterilization stage in this invention. Detailed Implementation

[0092] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0093] In existing technologies, sterilization is generally achieved by installing a sterilization device inside the refrigerator. However, sterilization devices such as ion generators produce ozone when they are working, which can cause odors. In particular, when the refrigerator is in defrost mode, the fan cannot be turned on, which can easily lead to ozone accumulation and odors. If the ion generator is stopped in defrost mode, it can lead to the proliferation of harmful bacteria.

[0094] To address the above problems, this invention proposes a refrigerator sterilization control method. Please refer to [link / reference]. Figure 2 Based on the refrigerator's working mode, the sterilization process is divided into three stages: the defrosting stage, the cooling stage before the defrosting stage, and the sterilization stage after the defrosting stage.

[0095] The cooling stage is the stage in which the refrigerator cools and sterilizes before defrosting. It is usually set one or two hours before the defrosting stage. During this stage, the fan and compressor in the refrigerator can work normally to ensure the refrigerator's cooling effect and remove the ozone buildup caused by the sterilization device, thus avoiding odors. This cooling stage needs to ensure the sterilization effect in the refrigerator. This invention sets the opening frequency of the sterilization device to the highest opening frequency.

[0096] During the defrosting stage, the compressor and fan inside the refrigerator are turned off. At this time, the temperature and humidity inside the refrigerator begin to rise, providing an environment for the growth of harmful bacteria. Since the sterilization device is set to the highest operating frequency during the cooling stage, most of the harmful bacteria have already been killed. Therefore, during the defrosting stage, the harmful bacteria inside the refrigerator will start to grow in the lowest quantity and gradually increase. During the defrosting stage, this invention first sets the operating frequency of the sterilization device to the lowest frequency to avoid the odor generated by the ozone produced by the ion generator. As defrosting is carried out, the operating frequency of the sterilization device is gradually increased so that the sterilization effect increases with the growth of harmful bacteria, avoiding insufficient sterilization effect leading to excessive growth of harmful bacteria. At the same time, the operating frequency of the sterilization device is dynamically adjusted in conjunction with the evaporator temperature and compartment humidity to increase variability and applicability.

[0097] The sterilization stage occurs after defrosting. At this time, the refrigerator's compressor and fan restart. However, since defrosting has just ended, the evaporator temperature hasn't fully dropped, and the blown-out air carries a large amount of moisture and a certain temperature generated during defrosting, providing a breeding ground for harmful bacteria. Furthermore, because the compressor and fan stop running during defrosting, the temperature and humidity inside the refrigerator rise. Therefore, theoretically, the environment inside the refrigerator is most suitable for the growth of harmful bacteria at the beginning of the sterilization stage. To address this, this invention initially sets the ion generator's operating frequency to the highest frequency to ensure the sterilization effect. As the refrigerator cools, the internal temperature decreases, inhibiting the growth of harmful bacteria. The sterilization device also significantly reduces the number of harmful bacteria. Therefore, as the sterilization stage progresses, the demand for sterilization capacity gradually decreases. To this end, this invention gradually reduces the operating frequency of the sterilization device from the highest frequency during the sterilization stage. This ensures the sterilization effect while minimizing the frequency of the sterilization device's operation, avoiding odors generated by the device and achieving energy savings.

[0098] In other words, the technical solution provided by this invention divides the sterilization process into three stages. During the cooling stage, the fan inside the refrigerator is turned on, which can effectively remove the ozone generated when the sterilization device is working. Therefore, this process sets the sterilization device to the highest operating frequency, which can effectively ensure the sterilization effect inside the refrigerator.

[0099] During the defrosting stage, the refrigerator fan cannot be turned on. This invention sets the sterilization device to the lowest operating frequency. Although ozone is produced, the amount produced is small and, due to the water-soluble nature of ozone, no odor is produced. At the same time, during the defrosting stage, this invention also dynamically adjusts the operating frequency of the sterilization device based on the evaporator temperature and the humidity of the compartment, which can ensure the sterilization effect of the sterilization device and avoid excessive growth of harmful bacteria during the defrosting stage.

[0100] During the sterilization stage, since the evaporator temperature has not completely decreased after the defrosting stage, it provides a breeding ground for harmful bacteria. This invention sets the sterilization device's activation frequency to the highest frequency initially, which can effectively prevent bacterial growth. At the same time, as the evaporator temperature and compartment humidity decrease, the refrigerator's internal environment will no longer be suitable for the growth of harmful bacteria. This invention then dynamically reduces the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity, which can effectively prevent the generation of odors while ensuring the sterilization effect, and can also save on the power consumption of the sterilization device to a certain extent.

[0101] The control logic for each stage is explained below;

[0102] For the refrigeration stage, the sterilization control method of the present invention in this stage includes:

[0103] The sterilization device is controlled to operate at its highest frequency, and this highest frequency is normally open.

[0104] Based on this maximum activation frequency setting, the present invention can maximize the sterilization effect inside the refrigerator, while also preparing for the subsequent defrosting stage.

[0105] Meanwhile, during this refrigeration stage, the refrigerator sterilization control method proposed in this invention also includes:

[0106] The refrigerator monitors the compartment temperature in real time. When the cooling stage is activated for the first preset duration, it determines whether the compartment temperature has reached the first threshold temperature.

[0107] If so, the cooling phase ends and the defrosting phase begins;

[0108] If not, the cooling phase will continue until the room temperature reaches the first threshold temperature.

[0109] This invention sets the cooling stage approximately two hours before the defrosting stage begins. The first preset duration is set to 2 hours, and the first threshold temperature is set to -2°C. When the cooling stage operates and meets the above conditions, it indicates that the refrigerator has achieved the corresponding cooling effect. To prevent frost from hindering the circulation of cold air, this invention provides an accurate switching indicator between the cooling stage and the defrosting stage through the above scheme, so as to defrost the refrigerator in a timely manner and avoid reducing the refrigerator's cooling effect.

[0110] Regarding the defrosting stage, this invention divides the defrosting stage into a first defrosting stage, a second defrosting stage, a third defrosting stage, and a fourth defrosting stage, depending on the defrosting time. Since the refrigerator does not cool during these defrosting stages and the fan does not turn on, the growth rate of harmful bacteria inside the refrigerator gradually increases. Therefore, this invention dynamically increases the activation frequency of the sterilization device during these stages. Specifically, for example... Figure 3 As shown, in the first defrosting stage of the present invention, the opening frequency of the sterilization device includes a first opening frequency, a second opening frequency, and a third opening frequency, wherein the first opening frequency is the lowest opening frequency, the second opening frequency is higher than the first opening frequency, and the third opening frequency is higher than the second opening frequency.

[0111] When the evaporator temperature is lower than the second threshold temperature and the room humidity is lower than the first threshold humidity, the sterilization device is controlled to open at the first opening frequency.

[0112] When the evaporator temperature is greater than the second threshold temperature and the room humidity is less than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency.

[0113] When the evaporator temperature is lower than the second threshold temperature and the humidity in the compartment is higher than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency.

[0114] When the evaporator temperature is greater than the second threshold temperature and the room humidity is greater than the first threshold humidity, the opening frequency of the sterilization device is increased to the third opening frequency.

[0115] The first opening frequency is 5 seconds per minute, the second opening frequency is 10 seconds per minute, and the third opening frequency is 15 seconds per minute. The second threshold temperature is -20℃, and the first threshold humidity is 30%.

[0116] Since the sterilization device is always on during the cooling stage, it can kill most of the harmful bacteria in the refrigerator. Therefore, the number of harmful bacteria in the refrigerator is the lowest when the defrosting stage begins. In the first defrosting stage, this invention sets the opening time of the sterilization device to the lowest frequency, which can minimize ozone generation and avoid odors while ensuring basic sterilization effect. At the same time, this invention also dynamically adjusts the opening frequency of the sterilization device in combination with the evaporator temperature and the humidity of the compartment, so that the sterilization effect of the sterilization device can change according to the operating conditions of the refrigerator and avoid the growth of harmful bacteria.

[0117] like Figure 4 As shown, in the second defrosting stage of the present invention, the opening frequency of the sterilization device includes a third opening frequency, a fourth opening frequency, and a fifth opening frequency, wherein the third opening frequency is the lowest opening frequency, the fourth opening frequency is higher than the third opening frequency, and the fifth opening frequency is higher than the fourth opening frequency.

[0118] When the evaporator temperature is lower than the third threshold temperature and the room humidity is lower than the second threshold humidity, the sterilization device is controlled to open at the third opening frequency.

[0119] When the evaporator temperature is greater than the third threshold temperature and the humidity in the compartment is less than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency.

[0120] When the evaporator temperature is lower than the third threshold temperature and the humidity in the compartment is higher than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency.

[0121] When the evaporator temperature is greater than the third threshold temperature and the room humidity is greater than the second threshold humidity, the opening frequency of the sterilization device is increased to the fifth opening frequency.

[0122] The third opening frequency is 15 seconds per minute, the fourth opening frequency is 20 seconds per minute, and the fifth opening frequency is 25 seconds per minute. The third threshold temperature is -5℃, and the first threshold humidity is 50%.

[0123] As the defrosting process begins, the temperature inside the refrigerator starts to rise, which can lead to the growth of harmful bacteria. In the second defrosting stage, this invention sets the minimum operating frequency higher than that in the first defrosting stage. This allows the sterilization effect of the sterilization device to better match the changing conditions inside the refrigerator. At the same time, in this second defrosting stage, the operating frequency of the sterilization device is dynamically adjusted from the minimum operating frequency. This ensures the sterilization effect while minimizing the odor caused by ozone generated during the operation of the sterilization device.

[0124] like Figure 5 As shown, in the third defrosting stage of the present invention, the opening frequency of the sterilization device includes a fifth opening frequency, a sixth opening frequency, and a seventh opening frequency, and the fifth opening frequency is the lowest opening frequency, the sixth opening frequency is higher than the fifth opening frequency, and the seventh opening frequency is higher than the sixth opening frequency.

[0125] When the evaporator temperature is less than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the sterilization device is controlled to open at the fifth opening frequency.

[0126] When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency.

[0127] When the evaporator temperature is lower than the fourth threshold temperature and the humidity in the compartment is higher than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency.

[0128] When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is greater than the third threshold humidity, the opening frequency of the sterilization device is increased to the seventh opening frequency.

[0129] Among them, the fifth opening frequency is 25 seconds per minute, the sixth opening frequency is 30 seconds per minute, the seventh opening frequency is 35 seconds per minute, the third threshold temperature is 0℃, and the first threshold humidity is 65%.

[0130] As the defrosting process begins, the temperature inside the refrigerator starts to rise, which can lead to the growth of harmful bacteria. In the third defrosting stage, this invention sets the minimum operating frequency higher than that in the second defrosting stage. This allows the sterilization effect of the sterilization device to better match the changing conditions inside the refrigerator. At the same time, in this third defrosting stage, the operating frequency of the sterilization device is dynamically adjusted from the minimum operating frequency. This ensures the sterilization effect while minimizing the odor caused by ozone generated during the operation of the sterilization device.

[0131] like Figure 6As shown, in the fourth defrosting stage of the present invention, the opening frequency of the sterilization device includes a seventh opening frequency and an eighth opening frequency, and the seventh opening frequency is the lowest opening frequency, while the eighth opening frequency is higher than the seventh opening frequency.

[0132] When the humidity in the room is less than the fourth threshold humidity, the sterilization device is controlled to open at the seventh frequency.

[0133] When the humidity in the room exceeds the fourth threshold humidity, the frequency of the sterilization device is increased to the eighth frequency until defrosting is completed.

[0134] Among them, the seventh opening frequency is 35 seconds per minute, the eighth opening frequency is 40 seconds per minute, and the fourth threshold humidity is 80%.

[0135] The fourth defrosting stage is the last part of the defrosting process. During this period, the refrigerator is the longest away from the end of the cooling stage, and there are more harmful bacteria growing inside the refrigerator. Therefore, the minimum opening frequency set by this invention is the highest among the four defrosting stages, which can minimize the growth of harmful bacteria and maximize the sterilization effect. At the same time, when the humidity in the compartment is higher than the fourth threshold humidity, that is, when it is suitable for the growth of harmful bacteria, the opening time of the sterilization device is further increased until defrosting is completed. This can maximize sterilization while limiting the generation of odors from ozone.

[0136] From the above four defrosting stages, the present invention sets the activation frequency of the sterilization device to eight stages. Compared with the traditional solution of always turning on the sterilization device or directly turning off the sterilization device, it increases variability and adaptability. It can dynamically adapt and adjust the sterilization effect according to the changes in the refrigerator's internal environment to avoid the growth of bacteria. It can also minimize the odor caused by ozone generated by the sterilization device without affecting the current sterilization effect.

[0137] The first, second, and third defrosting stages have the same start time, with the first defrosting stage preceding the second, the second preceding the third, and the third preceding the fourth. The fourth defrosting stage is the stage from the end of the third defrosting stage to the completion of defrosting.

[0138] Generally speaking, the defrosting time of a refrigerator is about 30 minutes to 1 hour. That is, the total time of the four defrosting stages in this invention is about 30 minutes to 1 hour. In order to reasonably plan each defrosting stage, the duration of the first defrosting stage, the second defrosting stage, and the third defrosting stage in this invention is set to 10 minutes each. The first defrosting stage is the first ten minutes after the start of defrosting, the second defrosting stage is the second ten minutes after the start of defrosting, the third defrosting stage is the third ten minutes after the start of defrosting, and then the remaining defrosting time is set as the fourth defrosting stage.

[0139] In this design, the first, second, and third defrosting stages are the processes in which the temperature inside the refrigerator begins to rise and the humidity begins to increase, and the growth rate of harmful bacteria begins to increase. This invention adapts to the sterilization effect by gradually increasing the minimum opening frequency, which can effectively inhibit bacterial growth. In the fourth defrosting stage, the temperature and humidity inside the refrigerator tend to stabilize. This invention maintains the opening frequency of the sterilization device at the eighth opening frequency during the process from the fourth threshold humidity to the end of defrosting. This eighth opening frequency is the highest opening frequency during the defrosting stage, which can effectively inhibit the growth of harmful bacteria.

[0140] For the sterilization stage, immediately after the defrosting stage ends, the evaporator temperature hasn't fully decreased, resulting in the blowing of humid and warm air. Since the refrigerator isn't cooling during defrosting, the environment inside is highly conducive to the growth of harmful bacteria. As sterilization continues and the refrigerator re-cools, lowering the compartment temperature, the number of harmful bacteria gradually decreases. This invention divides the sterilization stage into a first, second, third, and fourth sterilization stage based on its duration. By initially setting the sterilization device to its highest operating frequency to ensure the removal of harmful bacteria, and then dynamically reducing the operating time of the sterilization device, the sterilization effect changes with the number of harmful bacteria. This ensures effective sterilization while minimizing the operating time of the sterilization device. Figure 7 As shown, in the first sterilization stage, the present invention controls the opening frequency of the sterilization device to be maintained at the highest opening frequency, which is the normally open state.

[0141] In this first sterilization stage, the present invention sets the opening frequency of the sterilization device to a normally open state, which enables the sterilization device to be in the highest sterilization state and effectively inhibits the growth of harmful bacteria in this stage.

[0142] like Figure 8 As shown, in the second sterilization stage of the present invention, the opening frequency of the sterilization device includes a ninth opening frequency, a tenth opening frequency, and an eleventh opening frequency, and the ninth opening frequency is the highest opening frequency, the tenth opening frequency is lower than the ninth opening frequency, and the eleventh opening frequency is lower than the tenth opening frequency.

[0143] When the evaporator temperature is greater than the fifth threshold temperature and the room humidity is greater than the fifth threshold humidity, the sterilization device is controlled to open at the ninth opening frequency.

[0144] When the evaporator temperature is greater than the fifth threshold temperature and the room humidity is less than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency.

[0145] When the evaporator temperature is lower than the fifth threshold temperature and the room humidity is higher than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency.

[0146] When the evaporator temperature is lower than the fifth threshold temperature and the room humidity is lower than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the eleventh opening frequency.

[0147] Among them, the ninth opening frequency is 50 seconds per minute, the tenth opening frequency is 45 seconds per minute, the eleventh opening frequency is 40 seconds per minute, and the fifth threshold temperature is 0℃ and the fifth threshold humidity is 50%.

[0148] After the defrosting stage ends and the sterilization stage begins, the refrigerator will start cooling again. During this time, the fan inside the refrigerator will remain on. As the sterilization stage proceeds, the harmful bacteria inside the refrigerator will gradually decrease. This invention first sets the operating frequency of the sterilization device to the highest operating frequency, and then gradually reduces the operating frequency of the sterilization device according to the evaporator temperature and the humidity of the compartment. This allows the operating frequency of the sterilization device to decrease as the harmful bacteria decrease. Under these conditions, the sterilization device can not only ensure an effective sterilization effect, but also save operating time to the greatest extent, thus achieving energy saving and odor reduction to a certain extent.

[0149] like Figure 9 As shown, in the third sterilization stage of the present invention, the opening frequency of the sterilization device includes an eleventh opening frequency, a twelfth opening frequency, and a thirteenth opening frequency, with the eleventh opening frequency being the highest opening frequency, the twelfth opening frequency being lower than the eleventh opening frequency, and the thirteenth opening frequency being lower than the twelfth opening frequency.

[0150] When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is greater than the sixth threshold humidity, the sterilization device is controlled to open at the eleventh frequency.

[0151] When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is less than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency.

[0152] When the evaporator temperature is lower than the sixth threshold temperature and the humidity in the compartment is higher than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency.

[0153] When the evaporator temperature is lower than the sixth threshold temperature and the room humidity is lower than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the thirteenth opening frequency.

[0154] Among them, the eleventh opening frequency is 40 seconds per minute, the twelfth opening frequency is 35 seconds per minute, the thirteenth opening frequency is 30 seconds per minute, and the fifth threshold temperature is -30℃ and the fifth threshold humidity is 30%.

[0155] As the sterilization stage is carried out, the harmful bacteria in the refrigerator gradually decrease. In the third sterilization stage, the maximum opening frequency is set lower than that in the second sterilization stage. This allows the sterilization effect of the sterilization device to better match the changes in the working conditions inside the refrigerator. At the same time, in this third sterilization stage, the opening frequency of the sterilization device is dynamically adjusted from the maximum opening frequency. This can minimize the opening frequency of the sterilization device while ensuring the sterilization effect, thereby minimizing the generation of odors and achieving energy-saving effects.

[0156] like Figure 10 As shown, in the fourth sterilization stage of the present invention, the opening frequency of the sterilization device includes a thirteenth opening frequency and a fourteenth opening frequency, and the thirteenth opening frequency is the highest opening frequency, while the fourteenth opening frequency is lower than the thirteenth opening frequency.

[0157] Reducing the frequency of sterilization device activation based on evaporator temperature and compartment humidity in the refrigerator includes:

[0158] Determine whether the refrigeration conditions are met based on the evaporator temperature and the humidity of the refrigerator compartment;

[0159] If not, the sterilization device will be controlled to operate at the thirteenth operating frequency.

[0160] If so, the sterilization device will be turned on at the fourteenth frequency, and the sterilization process will end after the second preset duration is started in the fourth sterilization stage.

[0161] Among them, the thirteenth opening frequency is 30 seconds per minute, and the fourteenth opening frequency is 20 seconds per minute. Here, the refrigeration conditions are determined based on the temperature of the generator and the humidity of the compartment. In essence, it is to determine whether each compartment needs to be refrigerated. It can be set according to the refrigeration program preset by the refrigerator. In order to ensure the sterilization effect, the second preset duration is set to three hours in this invention. At this time, most of the harmful bacteria in the refrigerator can be basically eliminated.

[0162] The fourth sterilization stage is the last stage of the entire sterilization process. During this stage, the number of harmful bacteria in the refrigerator is the lowest. Therefore, although the present invention still adjusts the opening frequency of the sterilization device downward from the highest opening frequency, the opening frequency in the fourth sterilization stage is much lower than the opening frequency in the first sterilization stage. At this time, the sterilization ability of the sterilization device not only matches the number of harmful bacteria in the refrigerator at this time, but also minimizes the opening frequency of the sterilization device, reduces the generation of odors, and saves energy.

[0163] As mentioned above, this invention divides the frequency of the sterilization device's activation during the sterilization phase into multiple stages. Compared to the traditional solution of always keeping the sterilization device on or directly turning it off, this increases variability and adaptability. It can dynamically adapt and adjust the sterilization effect according to changes in the refrigerator's internal environment to prevent bacterial growth. Furthermore, it can minimize odors caused by ozone generated during the operation of the sterilization device and achieve energy-saving effects without affecting the current sterilization effect.

[0164] The first, second, and third sterilization stages have the same start duration, with the first sterilization stage preceding the second, the second preceding the third, the third preceding the fourth, and the fourth being the period from the end of the third to the end of the sterilization process.

[0165] Specifically, in this invention, the first sterilization stage is set to the first hour after defrosting, the second sterilization stage is set to the second hour after defrosting, the third sterilization stage is set to the third hour after defrosting, and the fourth sterilization stage is set to the end of the third sterilization stage and the start of the refrigeration stage. Generally, the sterilization stage lasts for six hours. After the fourth sterilization stage is completed, the sterilization process ends.

[0166] During the sterilization stage, the number of harmful bacteria in the refrigerator gradually decreases. This invention divides the sterilization stage into four stages, which can adapt to changes in the refrigerator's environmental parameters during the sterilization stage by adjusting the different control logics of the sterilization device. This allows the sterilization effect of the sterilization device to best match the environmental parameters inside the refrigerator. While ensuring the sterilization effect of the sterilization device, the frequency of its operation can be reduced as much as possible, thereby reducing odors and saving energy.

[0167] The present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described refrigerator sterilization control method.

[0168] Please see Figure 1 The present invention also proposes a refrigerator having the aforementioned computer-readable storage medium for executing the refrigerator sterilization control method described above. Due to its control over the sterilization device, it can achieve energy saving and is suitable for energy-saving refrigerators.

[0169] Compared with the prior art, the present invention has at least the following beneficial effects:

[0170] This invention divides the sterilization process into three stages. During the cooling stage, the fan inside the refrigerator is turned on, which can effectively remove the ozone generated when the sterilization device is working. Therefore, this process sets the sterilization device to the highest operating frequency, which can effectively ensure the sterilization effect inside the refrigerator.

[0171] During the defrosting stage, the refrigerator fan cannot be turned on. This invention sets the sterilization device to the lowest operating frequency. Although ozone is produced, the amount produced is small and, due to the water-soluble nature of ozone, no odor is produced. At the same time, during the defrosting stage, this invention also dynamically adjusts the operating frequency of the sterilization device in conjunction with the evaporator temperature and the humidity of the compartment to ensure the sterilization effect of the sterilization device and avoid excessive growth of harmful bacteria during the defrosting stage.

[0172] During the sterilization stage, since the evaporator temperature has not completely decreased after the defrosting stage, it provides a breeding ground for harmful bacteria. This invention sets the sterilization device's activation frequency to the highest frequency initially, which can effectively prevent bacterial growth. At the same time, as the evaporator temperature and compartment humidity decrease, the refrigerator's internal environment will no longer be suitable for the growth of harmful bacteria. This invention then dynamically reduces the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity, which can effectively prevent the generation of odors while ensuring the sterilization effect, and at the same time saves energy consumption generated by the sterilization device to a certain extent.

[0173] It should be noted that the terminology used above is for describing specific embodiments only and is not intended to limit the exemplary embodiments of the present invention. When the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. The order of execution of actions, steps, etc., in the apparatus and methods shown in the specification and drawings may be implemented in any order unless a specific express order is specified, and as long as the output of a previous process is not used in a subsequent process. Similar sequential terms used for ease of description do not imply that such an order must be followed.

[0174] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as constraints. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0175] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling sterilization in a refrigerator, wherein the refrigerator has a built-in sterilization device, characterized in that, The refrigerator sterilization control method includes: The sterilization process is divided into a defrosting stage, a refrigeration stage before the defrosting stage, and a sterilization stage after the defrosting stage. When the refrigerator is in the cooling phase, the sterilization device in the refrigerator is controlled to operate at the highest frequency. During the defrosting stage, the sterilization device is controlled to operate at the lowest frequency, and the frequency of operation of the sterilization device is increased according to the evaporator temperature and compartment humidity in the refrigerator. When in the sterilization stage, the sterilization device is controlled to operate at the highest frequency, and the frequency of operation of the sterilization device is reduced according to the evaporator temperature and compartment humidity in the refrigerator.

2. The refrigerator sterilization control method according to claim 1, characterized in that, When in the cooling phase, the sterilization device is in a normally open state at its highest operating frequency.

3. The refrigerator sterilization control method according to claim 1, characterized in that, When the refrigerator is in the cooling phase, the sterilization control method further includes: The refrigerator compartment temperature is monitored in real time. When the cooling stage is activated for a first preset duration, it is determined whether the compartment temperature has reached a first threshold temperature. If so, the cooling stage ends and the defrosting stage begins; If not, the cooling phase is maintained until the room temperature reaches the first threshold temperature.

4. The refrigerator sterilization control method according to claim 1, characterized in that, The defrosting stage includes a first defrosting stage. During the first defrosting stage, the activation frequency of the sterilization device includes a first activation frequency, a second activation frequency, and a third activation frequency. The first activation frequency is the lowest activation frequency, the second activation frequency is higher than the first activation frequency, and the third activation frequency is higher than the second activation frequency. Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the evaporator temperature is less than the second threshold temperature and the room humidity is less than the first threshold humidity, the opening frequency of the sterilization device is controlled to the first opening frequency. When the evaporator temperature is greater than the second threshold temperature and the room humidity is less than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency. When the evaporator temperature is lower than the second threshold temperature and the humidity in the compartment is higher than the first threshold humidity, the opening frequency of the sterilization device is increased to the second opening frequency. When the evaporator temperature is greater than the second threshold temperature and the chamber humidity is greater than the first threshold humidity, the operating frequency of the sterilization device is increased to the third operating frequency.

5. The refrigerator sterilization control method according to claim 4, characterized in that, The defrosting stage also includes a second defrosting stage. In the second defrosting stage, the opening frequency of the sterilization device includes a third opening frequency, a fourth opening frequency, and a fifth opening frequency. The third opening frequency is the lowest opening frequency, the fourth opening frequency is higher than the third opening frequency, and the fifth opening frequency is higher than the fourth opening frequency. Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the evaporator temperature is less than the third threshold temperature and the room humidity is less than the second threshold humidity, the sterilization device is controlled to open at the third opening frequency. When the evaporator temperature is greater than the third threshold temperature and the room humidity is less than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency. When the evaporator temperature is lower than the third threshold temperature and the humidity in the compartment is higher than the second threshold humidity, the opening frequency of the sterilization device is increased to the fourth opening frequency. When the evaporator temperature is greater than the third threshold temperature and the chamber humidity is greater than the second threshold humidity, the operating frequency of the sterilization device is increased to the fifth operating frequency.

6. The refrigerator sterilization control method according to claim 5, characterized in that, The defrosting stage also includes a third defrosting stage. In the third defrosting stage, the opening frequency of the sterilization device includes a fifth opening frequency, a sixth opening frequency, and a seventh opening frequency. The fifth opening frequency is the lowest opening frequency, the sixth opening frequency is higher than the fifth opening frequency, and the seventh opening frequency is higher than the sixth opening frequency. Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the evaporator temperature is less than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the opening frequency of the sterilization device is controlled to the fifth opening frequency. When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is less than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency. When the evaporator temperature is less than the fourth threshold temperature and the humidity in the compartment is greater than the third threshold humidity, the opening frequency of the sterilization device is increased to the sixth opening frequency. When the evaporator temperature is greater than the fourth threshold temperature and the room humidity is greater than the third threshold humidity, the opening frequency of the sterilization device is increased to the seventh opening frequency.

7. The refrigerator sterilization control method according to claim 6, characterized in that, The defrosting stage also includes a fourth defrosting stage. In the fourth defrosting stage, the opening frequency of the sterilization device includes a seventh opening frequency and an eighth opening frequency, and the seventh opening frequency is the lowest opening frequency, while the eighth opening frequency is higher than the seventh opening frequency. Increasing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the humidity of the room is less than the fourth threshold humidity, the opening frequency of the sterilization device is controlled to the seventh opening frequency; When the humidity of the room is greater than the fourth threshold humidity, the opening frequency of the sterilization device is increased to the eighth opening frequency until defrosting is completed.

8. The refrigerator sterilization control method according to claim 7, characterized in that, The first activation frequency is five seconds per minute, the second activation frequency is ten seconds per minute, the third activation frequency is fifteen seconds per minute, the fourth activation frequency is twenty seconds per minute, the fifth activation frequency is twenty-five seconds per minute, the sixth activation frequency is thirty seconds per minute, the seventh activation frequency is thirty-five seconds per minute, and the eighth activation frequency is forty seconds per minute.

9. The refrigerator sterilization control method according to claim 7, characterized in that, The first defrosting stage, the second defrosting stage, and the third defrosting stage have the same start duration, and the first defrosting stage precedes the second defrosting stage, the second defrosting stage precedes the third defrosting stage, the third defrosting stage precedes the fourth defrosting stage, and the fourth defrosting stage is the stage from the end of the third defrosting stage to the completion of defrosting.

10. The refrigerator sterilization control method according to claim 1, characterized in that, The sterilization stage includes a first sterilization stage, during which the sterilization device is maintained at the highest opening frequency, which is a normally open state.

11. The refrigerator sterilization control method according to claim 10, characterized in that, The sterilization stage also includes a second sterilization stage. In the second sterilization stage, the opening frequency of the sterilization device includes a ninth opening frequency, a tenth opening frequency, and an eleventh opening frequency. The ninth opening frequency is the highest opening frequency, the tenth opening frequency is lower than the ninth opening frequency, and the eleventh opening frequency is lower than the tenth opening frequency. Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the evaporator temperature is greater than the fifth threshold temperature and the chamber humidity is greater than the fifth threshold humidity, the opening frequency of the sterilization device is controlled to the ninth opening frequency. When the evaporator temperature is greater than the fifth threshold temperature and the room humidity is less than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency. When the evaporator temperature is lower than the fifth threshold temperature and the room humidity is higher than the fifth threshold humidity, the opening frequency of the sterilization device is reduced to the tenth opening frequency. When the evaporator temperature is less than the fifth threshold temperature and the room humidity is less than the fifth threshold humidity, the operating frequency of the sterilization device is reduced to the eleventh operating frequency.

12. The refrigerator sterilization control method according to claim 11, characterized in that, The sterilization stage also includes a third sterilization stage. In the third sterilization stage, the opening frequency of the sterilization device includes an eleventh opening frequency, a twelfth opening frequency, and a thirteenth opening frequency. The eleventh opening frequency is the highest opening frequency, the twelfth opening frequency is lower than the eleventh opening frequency, and the thirteenth opening frequency is lower than the twelfth opening frequency. Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is greater than the sixth threshold humidity, the opening frequency of the sterilization device is controlled to the eleventh opening frequency. When the evaporator temperature is greater than the sixth threshold temperature and the room humidity is less than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency. When the evaporator temperature is lower than the sixth threshold temperature and the room humidity is higher than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the twelfth opening frequency. When the evaporator temperature is less than the sixth threshold temperature and the room humidity is less than the sixth threshold humidity, the opening frequency of the sterilization device is reduced to the thirteenth opening frequency.

13. The refrigerator sterilization control method according to claim 12, characterized in that, The sterilization stage also includes a fourth sterilization stage. In the fourth sterilization stage, the opening frequency of the sterilization device includes a thirteenth opening frequency and a fourteenth opening frequency, and the thirteenth opening frequency is the highest opening frequency, while the fourteenth opening frequency is lower than the thirteenth opening frequency. Reducing the activation frequency of the sterilization device based on the evaporator temperature and compartment humidity in the refrigerator includes: Whether the refrigeration conditions are met is determined based on the evaporator temperature and the humidity of the compartment in the refrigerator. If not, the opening frequency of the sterilization device is controlled to the thirteenth opening frequency; If so, the opening frequency of the sterilization device is reduced to the fourteenth opening frequency, and the sterilization process ends after the second preset duration is started in the fourth sterilization stage.

14. The refrigerator sterilization control method according to claim 13, characterized in that, The ninth activation frequency is 50 seconds per minute, the tenth activation frequency is 45 seconds per minute, the eleventh activation frequency is 40 seconds per minute, the twelfth activation frequency is 35 seconds per minute, the thirteenth activation frequency is 30 seconds per minute, and the fourteenth activation frequency is 20 seconds per minute.

15. The refrigerator sterilization control method according to claim 13, characterized in that, The first sterilization stage, the second sterilization stage, and the third sterilization stage have the same start duration, and the first sterilization stage precedes the second sterilization stage, the second sterilization stage precedes the third sterilization stage, the third sterilization stage precedes the fourth sterilization stage, and the fourth sterilization stage is from the end of the third sterilization stage to the end of the sterilization process.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the refrigerator sterilization control method as described in any one of claims 1 to 15.

17. A refrigerator, characterized in that, The refrigerator has a computer-readable storage medium as described in claim 16.

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