Sterilization methods, devices, equipment and storage media for refrigeration equipment

Abstract

This application discloses a method, apparatus, device, and storage medium for sterilizing refrigeration equipment, belonging to the field of household appliances. The refrigeration equipment includes an electrode array deployed therein, which is used to construct a multi-gradient sterilization electric field. The sterilization method for the refrigeration equipment includes: activating the multi-gradient sterilization electric field in response to an energizing signal from the refrigeration equipment; the multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing-intensity field, and a weak electric field; receiving sensor signals transmitted by sensors in the refrigeration equipment; determining the contamination type of the refrigeration equipment based on the sensor signals; determining a target sterilization mode based on the contamination type; and adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment. This method enables safe and efficient sterilization of refrigeration equipment.

Description

Technical Field

[0001] This application belongs to the field of household appliances, specifically relating to a method and apparatus for sterilizing refrigeration equipment, a refrigeration equipment, and a storage medium. Background Technology

[0002] If food is not stored properly, temperature is not controlled properly, or hygiene inside the refrigeration equipment is not taken into account, various bacteria and molds can easily multiply in large quantities inside the refrigeration equipment.

[0003] In related technologies, ozone sterilization or photocatalytic sterilization is commonly used to sterilize refrigeration equipment. However, ozone sterilization cannot avoid the oxidative damage to food and corrosion of seals caused by ozone, and high concentrations of ozone may pose health risks if inhaled by users. Photocatalytic sterilization has limited coverage, and long-term use can accelerate plastic aging, affecting the lifespan of refrigeration equipment and even its safety.

[0004] Therefore, how to achieve safe and efficient sterilization of refrigeration equipment has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a method for sterilizing refrigeration equipment to address the safety risks and poor sterilization effects of existing sterilization methods for refrigeration equipment in related technologies.

[0006] Accordingly, embodiments of this application also provide a performance evaluation device, a refrigeration device, and a storage medium to ensure the implementation and application of the above methods.

[0007] To solve the above-mentioned technical problems, this application is implemented as follows:

[0008] In a first aspect, embodiments of this application provide a method for sterilizing a refrigeration device, wherein an electrode array is deployed in the refrigeration device, the electrode array being used to construct a multi-gradient sterilization electric field, the method comprising:

[0009] In response to the power-on signal of the refrigeration equipment, the multi-gradient sterilization electric field is activated; the multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing intensity field, and a weak electric field.

[0010] Receive sensor signals sent by the sensors in the refrigeration equipment;

[0011] The type of contamination in the refrigeration equipment is determined based on the sensor signals.

[0012] Determine the target sterilization mode based on the type of contamination;

[0013] The multi-gradient sterilization electric field is adjusted according to the target sterilization mode to sterilize the refrigeration equipment.

[0014] Optionally, the refrigeration equipment is equipped with at least a door magnetic sensor, an ion concentration sensor, and a biosensor. Determining the contamination type of the refrigeration equipment based on the sensor signals includes:

[0015] The type of contamination in the refrigeration equipment is determined based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor and the biosensor; the door magnetic sensor is used to detect the opening and closing of the equipment door of the refrigeration equipment; the ion concentration sensor is used to detect the ion concentration of the air in the refrigeration equipment; and the biosensor is used to detect specific markers of microorganisms in the refrigeration equipment.

[0016] Optionally, determining the contamination type of the refrigeration equipment based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor and the biosensor includes:

[0017] When the door magnetic sensor sends an open signal and the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, the contamination type of the refrigeration equipment is determined to be door opening intrusion.

[0018] Optionally, the specific markers of the microorganisms include at least bacterial biofilm markers and fungal spore markers. The determination of the contamination type of the refrigeration equipment based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the gate magnetic sensor and the biosensor includes:

[0019] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects mold spore markers, the contamination type of the refrigeration equipment is determined to be mold contamination.

[0020] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects bacterial biofilm markers, the contamination type of the refrigeration equipment is determined to be bacterial contamination.

[0021] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor simultaneously detects bacterial biofilm markers and mold spore markers, the contamination type of the refrigeration equipment is determined to be mixed contamination.

[0022] Optionally, the contamination types include door entry, mold contamination, bacterial contamination, and mixed contamination, and determining the target sterilization mode based on the contamination type includes:

[0023] In the case where the contamination type is door opening intrusion, the target sterilization mode is determined to be the strong pulse mode;

[0024] In the case where the contamination type is mold contamination, the target sterilization mode is determined to be a high-frequency mode;

[0025] In the case where the contamination type is bacterial contamination, the target sterilization mode is determined to be a low-frequency mode;

[0026] In the case where the contamination type is mixed contamination, the target sterilization mode is determined to be a mixed frequency mode.

[0027] Optionally, the target sterilization mode includes a high-frequency mode, a low-frequency mode, and a mixed-frequency mode, and adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment includes:

[0028] When the target sterilization mode is a mixed frequency mode, the concentration of mold spores and bacteria detected by the sensor are determined based on the sensor signal;

[0029] The duration of the high-frequency mode within the preset unit sterilization time is determined based on the mold spore concentration and the bacterial concentration.

[0030] The high-frequency mode and the low-frequency mode are switched according to the duration ratio.

[0031] Optionally, the method further includes:

[0032] In response to the power-on signal of the refrigeration equipment, a preset sterilization mode is operated;

[0033] Before adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment, the method further includes:

[0034] The current preset sterilization mode is determined based on the current time;

[0035] When the preset sterilization mode differs from the target sterilization mode, the multi-gradient sterilization electric field is adjusted according to the target sterilization mode.

[0036] Optionally, the refrigeration equipment is provided with a refrigeration air duct, and an inclined guide fin assembly is installed downstream of the refrigeration air duct;

[0037] After the multi-gradient sterilization electric field is activated, the charged particles generated by the multi-gradient sterilization electric field are blown through the cooling air duct equipped with inclined guide fins.

[0038] Optionally, the refrigeration equipment is equipped with a dust collection unit, which includes a dust collection ring and a spectral sensor. The method further includes:

[0039] The color of the dust collection ring is detected by the spectral sensor;

[0040] The amount of contamination in the dust collection unit is determined based on the color of the dust collection ring;

[0041] If the amount of contamination exceeds a preset contamination threshold, a dust collection ring cleaning reminder will be sent to the user.

[0042] Secondly, embodiments of this application provide a sterilization device for a refrigeration unit, wherein an electrode array is deployed in the refrigeration unit, the electrode array being used to construct a multi-gradient sterilization electric field, and the device comprising:

[0043] An activation module is used to activate the multi-gradient sterilization electric field in response to a power-on signal from the refrigeration equipment; the multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing-intensity field, and a weak electric field;

[0044] A receiving module is used to receive sensor signals sent by sensors in the refrigeration equipment;

[0045] A contamination type determination module is used to determine the contamination type of the refrigeration equipment based on the sensor signals;

[0046] A target sterilization mode determination module is used to determine a target sterilization mode based on the type of contamination.

[0047] An adjustment module is used to adjust the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment.

[0048] Thirdly, embodiments of this application provide a refrigeration device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the method described in the first aspect.

[0049] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0050] In this embodiment, an electrode array for constructing a multi-gradient sterilization electric field is deployed in the refrigeration equipment. Then, in response to the energizing signal of the refrigeration equipment, the multi-gradient sterilization electric field is activated. The multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing-intensity field, and a weak electric field. Sensor signals from sensors in the refrigeration equipment are received. The type of contamination in the refrigeration equipment is determined based on the sensor signals. A target sterilization mode is determined based on the contamination type. The multi-gradient sterilization electric field is adjusted according to the target sterilization mode to sterilize the refrigeration equipment. By constructing and activating the multi-gradient sterilization electric field, gradient-based safe sterilization can be achieved in the refrigeration equipment. Furthermore, by dynamically adjusting the multi-gradient sterilization electric field based on the corresponding target sterilization mode determined according to the type of contamination in the refrigeration equipment, the sterilization effect of the refrigeration equipment can be improved. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a flowchart illustrating the steps of an embodiment of a sterilization method for refrigeration equipment according to this application;

[0053] Figure 2 This is a topological diagram of a multi-gradient sterilization electric field according to an embodiment of a sterilization method for refrigeration equipment in this application;

[0054] Figure 3 This is a flowchart illustrating the steps of another embodiment of the sterilization method for refrigeration equipment in this application;

[0055] Figure 4 This is a diagram of the internal structure of a refrigerator refrigeration duct according to an embodiment of a sterilization method for refrigeration equipment in this application;

[0056] Figure 5 This is a flowchart illustrating the steps of another embodiment of the sterilization method for refrigeration equipment according to this application;

[0057] Figure 6 This is a structural block diagram of an embodiment of a sterilization device for refrigeration equipment according to this application. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0060] The sterilization method for refrigeration equipment provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0061] In related technologies, ozone sterilization or photocatalytic sterilization technologies are commonly used to sterilize various refrigeration equipment such as refrigerators, refrigerated display cases, and freezers. Ozone sterilization generates ozone inside the refrigeration equipment through high-voltage discharge, utilizing ozone's strong oxidizing properties to kill bacteria. However, this method cannot avoid the oxidative damage ozone causes to food and other refrigerated items, as well as the corrosion of the equipment's seals. Furthermore, high concentrations of ozone inhaled by humans or long-term corrosion of refrigeration equipment components pose safety hazards. Photocatalytic sterilization activates photocatalysts through ultraviolet irradiation, causing them to generate free radicals to kill microorganisms. However, the coverage area of ​​ultraviolet light is limited, and it is ineffective in shadowed areas such as deep drawers, slide rails, dead corners in air ducts, door seams, and recesses. These areas easily become breeding grounds for microorganisms, resulting in poor sterilization effects. Long-term use can also accelerate the aging of the internal plastics of the refrigeration equipment, creating safety risks. In order to solve or partially solve the problems existing in the above-mentioned related technologies, this application proposes a sterilization method for refrigeration equipment, so as to ensure the sterilization effect while achieving safe sterilization of refrigeration equipment, and meet the user's dual needs for efficient sterilization and safe use.

[0062] In one embodiment of this application, an electrode array is deployed in the refrigeration equipment to construct a multi-gradient sterilization electric field. The deployed electrode array can be a honeycomb composite electrode array, which can be embedded within the curved surface of the top air duct of the refrigeration compartment or freezer compartment of the refrigeration equipment. Multiple gradient electric field networks can be constructed by alternating positive and negative electrodes in the electrode array. (Refer to...) Figure 1 This is a flowchart illustrating the steps of an embodiment of a sterilization method for refrigeration equipment according to this application. The method includes the following steps:

[0063] Step 101: In response to the power-on signal of the refrigeration equipment, activate the multi-gradient sterilization electric field; the multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing intensity field, and a weak electric field;

[0064] The power-on signal of the refrigeration equipment indicates that the equipment is currently powered on, meaning its circuitry is connected to a power source and the switch is closed. The multi-gradient sterilization electric field can represent a sterilization electric field with multiple intensity gradients, including at least three gradients: a high-intensity electric field, a decreasing-intensity field, and a weak electric field, with the corresponding electric field strengths decreasing from strong to weak. For example, refer to... Figure 2 The diagram illustrates a multi-gradient sterilization electric field topology of an embodiment of a sterilization method for refrigeration equipment according to this application. This topology can construct at least a three-dimensional gradient sterilization electric field, including a high-intensity electric field, a decreasing intensity field, and a weak electric field. The high-intensity electric field generated by a high-density electrode cluster at the top layer serves as the main sterilization zone in the refrigeration equipment. The decreasing intensity field formed by transitional electrodes in the middle layer serves as a dynamic purification layer. The weak electric field extending to the depths of the refrigeration equipment drawers or to the bottom corners serves as a long-lasting antibacterial layer. The arrows in the diagram indicate that the electric field intensity of the multi-gradient sterilization electric field decreases vertically from top to bottom. The high-intensity electric field at the top can rapidly inactivate core bacteria, the decreasing intensity field in the middle layer serves as a transition zone to effectively capture free microorganisms, and the weak electric field at the bottom can continuously inhibit residual microorganisms or pathogens deep within the drawers.

[0065] Step 102: Receive sensor signals sent by the sensors in the refrigeration equipment;

[0066] The refrigeration equipment can be equipped with various types of sensors, including at least temperature and humidity sensors, door magnetic sensors, ion concentration sensors, and biosensors.

[0067] Step 103: Determine the type of contamination of the refrigeration equipment based on the sensor signals;

[0068] The contamination type of the refrigeration equipment is used to indicate the current level of contamination of the refrigeration equipment.

[0069] Step 104: Determine the target sterilization mode based on the type of contamination;

[0070] Among them, the target sterilization mode can be used to indicate the working mode of sterilization of refrigeration equipment.

[0071] Step 105: Adjust the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment.

[0072] The refrigeration equipment of this application can be equipped with an electrode array for constructing a multi-gradient sterilization electric field. In response to the power-on signal of the refrigeration equipment, the multi-gradient sterilization electric field can be activated. Then, sensor signals sent by sensors within the refrigeration equipment are received. Based on the sensor signals, the type of contamination in the refrigeration equipment can be determined. Based on the contamination type, a target sterilization mode can be determined. The multi-gradient sterilization electric field can then be adjusted according to the target sterilization mode to sterilize the refrigeration equipment. Through the above implementation process, after the multi-gradient sterilization electric field is activated, the electric field force can be propagated through the spatial medium within the refrigeration equipment. The high-intensity electric field only acts on the electrode cluster area on the curved surface of the top air duct, rather than directly on the food contact surface; the electric field force is propagated only through the air medium. By embedding the electrode array within the curved surface of the top air duct, combined with the attenuation characteristics of electric field energy in the air, it can be ensured that the multi-gradient sterilization electric field only acts on microorganisms in the airflow path, preventing the surface of food stored in the refrigeration equipment from being directly exposed to the strong electric field, thereby completely avoiding the risk of oxidative damage. By constructing and enabling a multi-gradient sterilization electric field, gradient-based safe sterilization can be achieved in refrigeration equipment. Furthermore, by determining the corresponding target sterilization mode based on the type of contamination in the refrigeration equipment, the multi-gradient sterilization electric field can be dynamically adjusted, effectively improving the sterilization effect of the refrigeration equipment.

[0073] In one embodiment of this application, the refrigeration equipment is equipped with at least a door magnetic sensor, an ion concentration sensor, and a biosensor. Determining the contamination type of the refrigeration equipment based on the sensor signals includes:

[0074] The type of contamination in the refrigeration equipment is determined based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor and the biosensor; the door magnetic sensor is used to detect the opening and closing of the equipment door of the refrigeration equipment; the ion concentration sensor is used to detect the ion concentration of the air in the refrigeration equipment; and the biosensor is used to detect specific markers of microorganisms in the refrigeration equipment.

[0075] Among them, the door magnetic sensor can be used to detect the opening and closing status of the refrigeration equipment door; the ion concentration sensor can be used to detect changes in the concentration of positive and negative ions in the air of the refrigeration equipment through electrode sensing, which can detect microbial activity signals, thereby identifying whether the refrigeration equipment is contaminated and indirectly inferring the degree of contamination; the biosensor can be used to detect microbial metabolic products in the air of the refrigeration equipment, such as some volatile organic compounds, enzymes released by spores, and other microbial specific markers. For example, the ion sensor can be placed in the air duct of the refrigeration equipment to facilitate monitoring the overall ion concentration inside the refrigeration equipment, and the biosensor can be placed near the integrated unit to facilitate the detection of microbial specific markers. In addition, the refrigeration equipment can also be equipped with a temperature and humidity sensor, which can detect the temperature and humidity in the refrigeration equipment to further determine whether the current internal environment of the refrigeration equipment is suitable for the reproduction of microorganisms. For example, when the temperature and humidity sensor detects that the air humidity in the refrigeration equipment is greater than 80%, it can be determined that the current internal environment of the refrigeration equipment is prone to mold growth.

[0076] Environmental changes in refrigeration equipment can be monitored in real time using door magnetic sensors, ion concentration sensors, and biosensors. The type of contamination in the refrigeration equipment can be determined based on the sensor signals sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor or biosensor. Changes in ion concentration in the refrigeration equipment may be caused by other non-contamination factors, such as volatile substances from stored food. By combining the sensor signals sent by the ion concentration sensor with at least one sensor signal sent by the door magnetic sensor and biosensor for collaborative judgment, the accuracy of determining the presence and type of contamination in the refrigeration equipment can be improved.

[0077] In one embodiment of this application, determining the contamination type of the refrigeration equipment based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor and the biosensor includes:

[0078] When the door magnetic sensor sends an open signal and the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, the contamination type of the refrigeration equipment is determined to be door opening intrusion.

[0079] Each time the door of a refrigeration unit is opened, bacteria and mold may enter, causing a surge in the ion concentration of the air inside. A door magnetic sensor detects when the door is opened and sends an opening signal. Upon receiving this signal and detecting a sudden increase in air ion concentration exceeding a preset concentration, it indicates a high risk of contamination due to a large influx of microorganisms. In this case, the contamination type can be identified as door intrusion. The preset concentration can be set according to actual needs, and this application does not impose specific limitations on it. Through the above implementation process, combining the signals from the door magnetic sensor and the ion concentration sensor, it can be determined that there is a risk of a large influx of microorganisms after the refrigeration unit door is opened, thus classifying the contamination type as door intrusion.

[0080] In one embodiment of this application, the specific markers of the microorganisms include at least bacterial biofilm markers and fungal spore markers. The step of determining the contamination type of the refrigeration equipment based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the gate magnetic sensor and the biosensor includes:

[0081] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects mold spore markers, the contamination type of the refrigeration equipment is determined to be mold contamination.

[0082] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects bacterial biofilm markers, the contamination type of the refrigeration equipment is determined to be bacterial contamination.

[0083] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor simultaneously detects bacterial biofilm markers and mold spore markers, the contamination type of the refrigeration equipment is determined to be mixed contamination.

[0084] Microbial specific biomarkers refer to biomarkers that are highly specific to microorganisms and can be used for microbial classification. Microbial specific biomarkers include at least bacterial biofilm biomarkers and fungal spore biomarkers. Bacterial biofilm biomarkers may include at least bacterial lipopolysaccharides and protein fragments, while fungal spore biomarkers may include at least chitin fragments and spore proteins. Microorganisms release charged particles during metabolism, and these charged particles can be detected by ion concentration sensors.

[0085] The detection of mold spore markers by biosensors indicates the presence of mold in the refrigeration equipment. If the ion concentration sensor detects an air ion concentration higher than a preset concentration, and the biosensor also detects mold spore markers, this indicates a high risk of mold contamination in the refrigeration equipment, thus classifying the contamination type as mold. Similarly, the detection of bacterial biofilm markers by biosensors indicates the presence of bacteria in the refrigeration equipment. If the ion concentration sensor detects an air ion concentration higher than a preset concentration, and the biosensor also detects bacterial biofilm markers, this indicates a high risk of both mold and bacterial contamination, classifying the contamination type as mixed contamination. Through this process, the type of microbial contamination within the refrigeration equipment can be accurately determined based on the environmental conditions monitored by the ion concentration sensor and biosensor, providing support for more efficient sterilization efforts targeting different types of contamination.

[0086] For example, the type of contamination in refrigeration equipment can also be determined by combining sensor signals sent by temperature and humidity sensors. Mold spores exhibit significantly enhanced activity in high humidity environments. Correspondingly, a preset concentration under high humidity conditions can be set, which is lower than the normal preset concentration. If the ion concentration sensor detects that the ion concentration in the air is greater than the preset concentration under high humidity conditions, and the biosensor detects mold spore markers, the contamination type of the refrigeration equipment is determined to be mold contamination. The high humidity condition can be set to an internal air humidity of greater than 80% as detected by the temperature and humidity sensor. The specific setting of the high humidity condition can be determined according to actual needs, and this application does not impose specific limitations on it.

[0087] Reference Figure 3 This is a flowchart illustrating the steps of another embodiment of the sterilization method for refrigeration equipment in this application. In one embodiment of this application, the contamination type includes door intrusion, mold contamination, bacterial contamination, and mixed contamination. Determining the target sterilization mode based on the contamination type includes:

[0088] Step 301: In the case where the contamination type is door opening intrusion, determine that the target sterilization mode is strong pulse mode;

[0089] Step 302: If the contamination type is mold contamination, determine that the target sterilization mode is high-frequency mode;

[0090] Step 303: If the contamination type is bacterial contamination, determine that the target sterilization mode is a low-frequency mode;

[0091] Step 304: If the contamination type is mixed contamination, determine the target sterilization mode as mixed frequency mode.

[0092] When the contamination type is door-opening intrusion, the target sterilization mode can be determined to be the strong pulse mode. The strong pulse mode refers to applying a transient high-voltage electric pulse with a significantly higher intensity than the already activated multi-gradient sterilization electric field. This pulse can be used to break down cell membranes, creating irreversible electroporation, thereby effectively eliminating the microbial contaminants that invade when the door is opened. Upon confirming that the current contamination type is door-opening intrusion, the strong electric field pulse can be quickly triggered. For example, when the door magnetic sensor sends an opening signal and the ion concentration sensor detects a sudden increase in the ion concentration in the air exceeding a preset concentration, a millisecond-level transient high-voltage electric pulse can be triggered to achieve rapid removal of the door-opening intrusion. For example, the trigger response time of the transient high-voltage electric pulse can be set to 200ms. The response time can be set according to specific needs, and this application does not impose specific limitations on it.

[0093] In cases where the contamination type is mold contamination, the target sterilization mode can be determined as a high-frequency mode. High-frequency (HF) mode refers to adjusting the electric field frequency of the already activated multi-gradient sterilization electric field to a high-frequency range. The electric field frequency range corresponding to HF mode can be set from 100 kHz (kilohertz) to 1 MHz (megahertz), and the specific intensity setting can be determined separately according to actual needs; this application does not impose specific limitations on this. The electromagnetic waves generated in HF mode can interfere with the ion channels and ATP (adenosine triphosphate) synthase activity of mold spores, thereby interfering with the metabolic activity of mold spores, blocking the energy metabolism of mold spores, and inhibiting the germination and reproduction of mold spores.

[0094] When the contamination type is bacterial, the target sterilization mode can be determined as low-frequency mode. Low-frequency (LF) mode refers to adjusting the electric field frequency of the already activated multi-gradient sterilization electric field to a lower frequency range. The electric field frequency range corresponding to LF mode can be set from 1kHz to 10kHz, and the specific intensity setting can be determined separately according to actual needs; this application does not impose specific limitations on this. The electromagnetic waves generated in LF mode have stronger penetrating power, capable of disrupting bacterial biofilm structures and inhibiting the survival of stubborn bacterial populations (such as psychrophilic bacteria).

[0095] In cases of mixed contamination, a mixed-frequency sterilization mode can be determined as the target sterilization mode. This mixed-frequency mode refers to alternating the frequency of the activated multi-gradient sterilization electric field between high and low frequencies. Through this process, the appropriate target sterilization mode can be determined for different contamination types, enabling targeted sterilization. The spatial sterilization structure constructed by the multi-gradient sterilization electric field, combined with dynamic frequency control, effectively enhances sterilization, achieving precise and efficient sterilization of refrigeration equipment. Furthermore, high-frequency modes typically consume more power than low-frequency modes. Dynamically adjusting the target sterilization mode based on different contamination types can also reduce energy consumption of refrigeration equipment to a certain extent, achieving energy-saving sterilization. This provides users with energy-efficient refrigerators, freezers, and other refrigeration equipment that can efficiently sterilize, improving the user experience.

[0096] In one embodiment of this application, the target sterilization mode includes a high-frequency mode, a low-frequency mode, and a mixed-frequency mode. Adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment includes:

[0097] When the target sterilization mode is a mixed frequency mode, the concentration of mold spores and bacteria detected by the sensor are determined based on the sensor signal;

[0098] The duration of the high-frequency mode within the preset unit sterilization time is determined based on the mold spore concentration and the bacterial concentration.

[0099] The high-frequency mode and the low-frequency mode are switched according to the duration ratio.

[0100] When the target sterilization mode is a mixed frequency mode, the concentrations of mold spores and bacteria detected by the sensor can be determined based on the sensor signal. Then, the proportion of high-frequency mode within a preset unit sterilization time can be determined based on the mold spore concentration and bacterial concentration. The unit sterilization time refers to the time it takes for the refrigeration equipment to alternate between one high-frequency mode and one low-frequency mode sterilization. The specific duration can be obtained through pre-calibration, and this application does not impose specific restrictions on it. The proportion of high-frequency mode within the preset unit sterilization time can be expressed by the following formula: HF proportion = (mold spore concentration × α + bacterial concentration × β) / (mold spore concentration + bacterial concentration). Here, α and β are weighting factors. Since mold spores are significantly more sensitive to high-frequency electric fields than bacteria, the value of α can usually be limited to be greater than the value of β. The values ​​of α and β can be obtained through pre-calibration and can be dynamically adjusted according to the degree of contamination in the refrigeration equipment; this application does not impose specific restrictions on them.

[0101] The degree of contamination in the refrigeration equipment can be determined based on the detected concentrations of mold spores and bacteria. For example, if the degree of mold spore contamination in the refrigeration equipment is moderate, the corresponding value of α can be set to 0.6 and the corresponding value of β can be set to 0.4; if the degree of mold spore contamination in the refrigeration equipment is high, the corresponding value of α can be set to 0.8 and the corresponding value of β can be set to 0.2. The degree of contamination can be determined by a pre-calibrated ion threshold, and this application does not impose specific limitations on this. After determining the proportion of time in the high-frequency mode within the preset unit sterilization time, the high-frequency mode and the low-frequency mode can be switched according to this proportion. For example, when the mold spore concentration is 500 cfu / m³ (colony forming units per cubic meter) and the bacterial concentration is 1500 cfu / m³, the mold contamination level is moderate. The value of α can be 0.6, and the value of β can be 0.4. The corresponding HF ratio is (500 × 0.6 + 1500 × 0.4) / (500 + 1500) × 100% = 45%. When the mold spore concentration is 1000 cfu / m³ and the bacterial concentration is 200 cfu / m³, it indicates that the detected mold spore concentration is much higher than the bacterial concentration, indicating a high level of mold contamination. In this case, the weight of the mold spore concentration can be increased. The value of α can be 0.8, and the value of β can be 0.2. The corresponding HF ratio is (1000 × 0.8 + 200 × 0.6) / (1000 + 200) × 100% = 79.7%.

[0102] For example, during the sterilization of refrigeration equipment in the target sterilization mode, the internal contamination level of the refrigeration equipment is constantly changing. The proportion of high-frequency mode within the preset unit sterilization time can be recalculated after completing one round of high-frequency and low-frequency modes in the mixed frequency mode. This allows for dynamic adjustment of the high-frequency mode's proportion based on the contamination level of the refrigeration equipment, reducing unnecessary energy waste. Through this process, the proportion of high-frequency mode within the preset unit sterilization time can be set according to the mold spore concentration and the determined bacterial concentration. Then, the electric field parameters can be adjusted in a timely manner to achieve effective sterilization of mixed contamination.

[0103] In one embodiment of this application, the method further includes:

[0104] In response to the power-on signal of the refrigeration equipment, a preset sterilization mode is operated;

[0105] Before adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment, the method further includes:

[0106] The current preset sterilization mode is determined based on the current time;

[0107] When the preset sterilization mode differs from the target sterilization mode, the multi-gradient sterilization electric field is adjusted according to the target sterilization mode.

[0108] The preset sterilization mode refers to the sterilization mode that the refrigeration equipment operates by default after being powered on. Preset sterilization modes can include daytime sterilization mode and nighttime sterilization mode. Refrigeration equipment is typically used more frequently during the day, so the daytime sterilization mode defaults to a low-frequency mode, capable of handling basic bacterial contamination that may occur due to frequent door openings and food handling during the day. Refrigeration equipment is typically used less frequently at night, so the nighttime sterilization mode can default to a low-electricity mode, adjusting and maintaining the electric field strength of the multi-gradient sterilization electric field at a low intensity, such as below 100V / cm (voltage / cm), to continuously inhibit residual microorganisms with low energy consumption, providing continuous protection while saving energy. For example, the time period corresponding to the daytime mode can be set to 6:00-22:00, and the time period corresponding to the nighttime mode can be set to 22:00-6:00.

[0109] In response to the power-on signal of the refrigeration equipment, a preset sterilization mode can be run. Before adjusting the multi-gradient sterilization electric field to sterilize the refrigeration equipment according to the target sterilization mode, the currently default preset sterilization mode can be determined based on the current time. If the preset sterilization mode differs from the target sterilization mode, the multi-gradient sterilization electric field is adjusted according to the target sterilization mode. For example, if the currently running preset sterilization mode is daytime mode and the current target sterilization mode is also low-frequency mode, no further adjustment of the multi-gradient sterilization electric field is needed. If the currently running preset sterilization mode is daytime mode and the current target sterilization mode is high-frequency mode, the multi-gradient sterilization electric field can be adjusted to the electric field frequency corresponding to the high-frequency mode. If the currently running preset sterilization mode is daytime mode and the current target sterilization mode is high-frequency mode, the proportion of high-frequency mode within the preset unit sterilization time can be determined based on the detected mold spore concentration and bacterial concentration, and then the corresponding mixed frequency mode can be run. By operating the preset sterilization mode, the basic sterilization needs of refrigeration equipment can be met during the day and night while maintaining relatively energy efficiency. This provides users with energy-saving refrigerators, freezers and other energy-saving refrigeration equipment that can efficiently sterilize, thus improving the user experience.

[0110] Reference Figure 4 This is an internal structural diagram of a refrigerator refrigeration duct according to an embodiment of a sterilization method for a refrigeration device in this application. In one embodiment of this application, the refrigeration device is provided with a refrigeration duct, and an inclined guide fin assembly is installed downstream of the refrigeration duct.

[0111] After the multi-gradient sterilization electric field is activated, the charged particles generated by the multi-gradient sterilization electric field are blown through the cooling air duct equipped with inclined guide fins.

[0112] The refrigeration duct of the refrigeration equipment delivers low-temperature air into the equipment, achieving uniform cooling. The guide fin assembly typically consists of multiple thin metal fins arranged at a specific angle to form airflow channels for adjusting airflow paths. Normally, the airflow transported by the refrigeration duct is vertically downward. By installing an inclined guide fin assembly downstream of the refrigeration duct, the refrigeration duct can be reconfigured, changing the original airflow direction to an oblique flow. The inclination angle of the guide fin assembly can be adapted to different sizes and designs of refrigeration equipment; this application does not impose specific limitations on this.

[0113] After activating the multi-gradient sterilization electric field, charged particles generated by the multi-gradient sterilization electric field can be blown through the refrigeration air duct equipped with inclined guide fins. For example, the reconstructed refrigerator refrigeration air duct, by loading guide fins at a 15°-30° angle downstream of the electrode area, can transform the original refrigeration airflow into a carrier for charged particles. After the high-density electrode cluster at the top of the refrigeration unit is energized, it ionizes the air to generate charged particles. These charged particles can be transported to every corner of the refrigeration unit by the refrigeration airflow guided by the guide fins, thus enabling the gradient electric field to fully cover the refrigeration compartment. Figure 4 The arrows indicate the adjustable airflow path that directs charged particles generated by a high-density electrode cluster embedded in the top duct of the refrigerator compartment to various corners. The oblique airflow can deliver charged particles generated by the multi-gradient sterilization electric field within the refrigerator to various hard-to-reach areas inside, such as drawer slide gaps and door seal recesses. Through this process, charged particles generated by the multi-gradient sterilization electric field can be delivered to various hard-to-reach areas within the refrigerator, improving the coverage and effectiveness of the sterilization function. Furthermore, this design is achieved by adjusting the direction of the refrigerator's original cold airflow, without increasing the refrigerator's energy consumption.

[0114] Reference Figure 4 This is a structural diagram of the internal structure of a refrigerator's refrigeration duct, representing an embodiment of a sterilization method for a refrigeration device according to this application. In one embodiment, the refrigeration device includes a dust collection unit, which is equipped with a dust collection ring and a spectral sensor. The method further includes:

[0115] The color of the dust collection ring is detected by the spectral sensor;

[0116] The amount of contamination in the dust collection unit is determined based on the color of the dust collection ring;

[0117] If the amount of contamination exceeds a preset contamination threshold, a dust collection ring cleaning reminder will be sent to the user.

[0118] The dust collection unit can be a structure in a refrigeration unit used to adsorb / filter dust, mold, and bacteria from the air inside the refrigeration unit, while the dust collection ring is the specific component used to store the adsorbed material. The spectral sensor can be a miniature spectral sensor used to analyze light and generate spectral curves that reflect the optical characteristics of a substance.

[0119] The dust collection ring can be optically scanned periodically using an LED light source. A spectral sensor receives the reflected light signal and generates a corresponding spectral curve. The color of the current dust collection ring is then determined based on this curve, and the level of contamination in the current dust collection unit is determined by consulting a pre-set color-contamination mapping table. For example, the contamination level of the dust collection ring unit, from low to high, corresponds to a color from light gray to dark brown. The color-contamination mapping table can be pre-determined experimentally. Generally, the higher the contamination level, the darker the color of the dust collection ring. If the contamination level exceeds a preset threshold, a dust collection ring cleaning reminder can be sent to the user to remind them to clean or replace the ring. Upon sensing that the user has reinstalled the dust collection ring, an optical scan is triggered, updating the ring's color and corresponding contamination level. For example, cleaning reminders can be sent to the user via a smart home / smart appliance app.

[0120] Reference Figure 4 The dust collection unit can be installed at the end of the refrigeration air duct of the refrigeration equipment. The outer shell of the dust collection unit can be transparent to allow the spectral sensor to better identify the color of the dust collection ring inside. The ion sensor can be installed in the air duct near the dust collection unit, and the biosensor can be installed near the dust collection unit. While the dust collection unit adsorbs pollutants such as dust, mold, and bacteria from the air, it can perform microbial detection on the unfiltered air. Figure 4 The specific locations of the dust collection unit, ion sensor, and biosensor shown are merely examples; their locations can be adjusted according to actual needs, and this application does not impose any specific limitations. Through the above implementation process, when the contamination level of the dust collection ring exceeds a preset threshold, the user is promptly alerted to replace or clean it. This prevents excessive contamination from affecting the adsorption or filtration effect of the dust collection unit, or even causing reverse contamination of the internal environment of the refrigeration equipment.

[0121] For example, refrigeration equipment can also be equipped with colored lighting devices to visually indicate the overall operating status of the equipment. These colored lighting devices can include various types such as ring-shaped breathing lights and colored light strips. The operating status of the refrigeration equipment can include normal operation, low-power mode, and abnormal alarm states. Different lighting colors can be pre-set for different operating states, and the colored lighting devices can then emit corresponding colors based on the current status of the refrigeration equipment. For example, green light can indicate that the refrigeration equipment is in normal operation, blue light can indicate that it is in low-power mode, and red light can indicate that an abnormal alarm is present. The triggering conditions for abnormal alarms can include abnormal electrode insulation withstand voltage detection, which will trigger a leakage alarm; abnormal air duct air tightness detection, which will trigger an air leakage alarm; and high-voltage system overload, which will trigger an electric field voltage over-limit alarm and automatically cut off the power supply to the refrigeration equipment. Through the above implementation process, the operating status of refrigeration equipment can be visualized using colored lighting devices, allowing users to intuitively receive feedback on the operating status of the refrigeration equipment.

[0122] For example, key components in refrigeration equipment can be encapsulated with food-grade insulation, including: covering the electrode surface with a nano-alumina ceramic protective layer and vacuum-sealing all high-voltage contacts with medical-grade silicone. Regular, automatic airtightness testing of the air duct and electrode insulation withstand voltage verification are performed to ensure the continuous and safe operation of the refrigeration equipment. The refrigeration equipment can also be equipped with a fault diagnosis module that can monitor the stability of the sterilization electric field in real time, automatically cutting off the power and triggering a red alarm when an abnormality occurs in the electric field.

[0123] Reference Figure 5 This is a flowchart illustrating the steps of another embodiment of the sterilization method for refrigeration equipment in this application.

[0124] With the refrigeration equipment door closed, the control center will switch between day and night modes based on the current time. Day and night modes include a daytime mode and a nighttime mode. The daytime mode can use the default low-frequency mode or a mixed electric field with low-frequency as the primary mode. The nighttime mode can use a micro-electric mode. A mixed electric field with low-frequency as the primary mode refers to an electric field in a mixed frequency mode where the duration of the low-frequency electric field accounts for a relatively high proportion within a preset unit sterilization time.

[0125] In addition, the control center continuously collects pollution-related data through various sensors in the refrigeration equipment and activates corresponding multi-level electrostatic fields (multi-gradient sterilization electric fields) based on the pollution data. These multi-level electrostatic fields can include strong electric fields (high-intensity electric fields), intermediate electric fields (intensity decreasing fields), and weak electric fields. The strong electric field at the top can effectively kill bacteria, the intermediate electric field can effectively purify microorganisms, and the weak electric field at the bottom can effectively inhibit bacteria. Furthermore, the frequency of the multi-level electrostatic fields can be dynamically adjusted according to the specific type of pollution. If the internal air humidity of the refrigeration equipment is detected to be particularly high, which easily leads to the rapid reproduction of mold, or if the ion concentration is detected to be greater than the preset concentration and mold spores are present, the control center can automatically adjust to a high-frequency mode to sterilize the mold; if only the ion concentration is detected to be greater than the preset concentration and bacteria are present, the control center can automatically adjust to a low-frequency mode to sterilize the bacteria.

[0126] Charged particles generated by multi-level electrostatic fields can be carried to every corner of the refrigeration equipment through airflow circulation. These charged particles can adsorb microorganisms in the air within the refrigeration equipment and carry them to the integrated unit for deposition.

[0127] The integrated amount of pollution in the dust collection unit can be determined by a spectral sensor, and visual prompts can be sent to the user.

[0128] Users can wash and reuse the dust collection ring, which can then continue to filter and deposit microorganisms generated by the multi-stage electrostatic field.

[0129] Through the above implementation process, the control center in the refrigeration equipment can monitor the environmental status of the equipment based on various signals fed back by sensors, such as humidity levels and temperature, and especially the level of contamination inside the equipment, such as the presence of mold, bacteria, or other microbial activity. Then, based on the environmental status, it automatically adjusts multi-level electrostatic fields, utilizing the internal airflow circulation to achieve targeted active sterilization. This creates a refrigeration equipment sterilization solution that includes spatial electric field reshaping, dynamic contamination removal, intelligent environmental decision-making, proactive risk defense, and intuitive status feedback.

[0130] For example, the control center of the refrigeration equipment can have a built-in preset rule base. The control center can determine the type of contamination and select the target sterilization mode based on the preset rule base and the currently received sensor information. The localized preset rule base enables real-time decision-making, avoiding reliance on the cloud. The rules in the preset rule base can be constructed based on experimental data from pre-conducted experiments; this application does not impose specific limitations on this. The corresponding weights of the high-frequency and low-frequency modes in the mixed-frequency mode can also be obtained by matching the mold spore concentration and bacterial concentration in the preset rule base. The control center can intelligently switch the working mode (target sterilization mode) of the multi-gradient sterilization electric field based on the real-time status of the internal environment of the refrigeration equipment and the type of microbial threat, achieving precise, efficient, and energy-saving sterilization of the refrigeration equipment. This provides users with energy-efficient refrigerators, freezers, and other energy-saving refrigeration equipment capable of efficient sterilization, improving the user experience.

[0131] It should be noted that the refrigeration equipment sterilization method provided in this application embodiment can be executed by a refrigeration equipment sterilization device, or a control module in the refrigeration equipment sterilization device for executing the refrigeration equipment sterilization method. This application embodiment uses the refrigeration equipment sterilization device executing the refrigeration equipment sterilization method as an example to illustrate the refrigeration equipment sterilization method provided in this application embodiment.

[0132] Reference Figure 6 The diagram illustrates a structural block diagram of an embodiment of a sterilization device for a refrigeration equipment according to this application. The refrigeration equipment includes an electrode array, which is used to construct a multi-gradient sterilization electric field. Specifically, the electrode array may include the following modules:

[0133] The activation module 601 is used to activate the multi-gradient sterilization electric field in response to the power-on signal of the refrigeration equipment; the multi-gradient sterilization electric field includes a high-intensity electric field, a decreasing intensity field, and a weak electric field;

[0134] The receiving module 602 is used to receive sensor signals sent by the sensors in the refrigeration equipment;

[0135] The contamination type determination module 603 is used to determine the contamination type of the refrigeration equipment based on the sensor signal;

[0136] The target sterilization mode determination module 604 is used to determine the target sterilization mode according to the type of contamination.

[0137] The adjustment module 605 is used to adjust the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment.

[0138] The refrigeration equipment is equipped with at least a door magnetic sensor, an ion concentration sensor, and a biosensor. The contamination type determination module includes:

[0139] The contamination type determination submodule is used to determine the contamination type of the refrigeration equipment based on the sensor signal sent by the ion concentration sensor and at least one sensor signal sent by the door magnetic sensor and the biosensor; the door magnetic sensor is used to detect the opening and closing of the equipment door of the refrigeration equipment; the ion concentration sensor is used to detect the ion concentration of the air in the refrigeration equipment; and the biosensor is used to detect specific markers of microorganisms in the refrigeration equipment.

[0140] The pollution type determination submodule is further used for:

[0141] When the door magnetic sensor sends an open signal and the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, the contamination type of the refrigeration equipment is determined to be door opening intrusion.

[0142] The specific markers of the microorganisms include at least bacterial biofilm markers and fungal spore markers, and the contamination type determination submodule is further used for:

[0143] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects mold spore markers, the contamination type of the refrigeration equipment is determined to be mold contamination.

[0144] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor detects bacterial biofilm markers, the contamination type of the refrigeration equipment is determined to be bacterial contamination.

[0145] If the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, and the biosensor simultaneously detects bacterial biofilm markers and mold spore markers, the contamination type of the refrigeration equipment is determined to be mixed contamination.

[0146] The contamination types include door-opening intrusion, mold contamination, bacterial contamination, and mixed contamination. The target sterilization mode determination module is further used for:

[0147] In the case where the contamination type is door opening intrusion, the target sterilization mode is determined to be the strong pulse mode;

[0148] In the case where the contamination type is mold contamination, the target sterilization mode is determined to be a high-frequency mode;

[0149] In the case where the contamination type is bacterial contamination, the target sterilization mode is determined to be a low-frequency mode;

[0150] In the case where the contamination type is mixed contamination, the target sterilization mode is determined to be a mixed frequency mode.

[0151] The target sterilization mode includes a high-frequency mode, a low-frequency mode, and a mixed-frequency mode. The adjustment module includes:

[0152] When the target sterilization mode is a mixed frequency mode, the concentration of mold spores and bacteria detected by the sensor are determined based on the sensor signal;

[0153] The duration of the high-frequency mode within the preset unit sterilization time is determined based on the mold spore concentration and the bacterial concentration.

[0154] The high-frequency mode and the low-frequency mode are switched according to the duration ratio.

[0155] The device further includes:

[0156] The operation module is used to respond to the power-on signal of the refrigeration equipment and run a preset sterilization mode;

[0157] Before adjusting the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment, the device further includes:

[0158] The preset sterilization mode determination module is used to determine the currently running preset sterilization mode based on the current time.

[0159] An adjustment module is used to adjust the multi-gradient sterilization electric field according to the target sterilization mode when the preset sterilization mode is different from the target sterilization mode.

[0160] The refrigeration equipment is provided with a refrigeration air duct, and an inclined guide fin assembly is installed downstream of the refrigeration air duct. The device also includes:

[0161] The blowing module is used to blow charged particles generated by the multi-gradient sterilization electric field through the cooling air duct equipped with inclined guide fins after the multi-gradient sterilization electric field is activated.

[0162] The refrigeration equipment is equipped with a dust collection unit, which includes a dust collection ring and a spectral sensor. The device also includes:

[0163] A color detection module is used to detect the color of the dust collection ring through the spectral sensor;

[0164] A pollution level determination module is used to determine the pollution level of the dust collection unit based on the color of the dust collection ring;

[0165] The push module is used to push a dust collection ring cleaning reminder to the user when the amount of pollution exceeds a preset pollution threshold.

[0166] The refrigeration equipment sterilization device in this application embodiment can be a device, or it can be a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. For example, mobile electronic devices can be mobile phones, tablets, laptops, PDAs, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), etc., while non-mobile electronic devices can be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc. This application embodiment does not make specific limitations.

[0167] The refrigeration equipment sterilization device in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not specifically limit its use.

[0168] The refrigeration equipment sterilization device provided in this application embodiment can achieve... Figures 1 to 5 The various processes implemented by the sterilization device of the refrigeration equipment in the method embodiment will not be described again here to avoid repetition.

[0169] The refrigeration equipment of this application can be equipped with an electrode array for constructing a multi-gradient sterilization electric field. The deployed electrode array can be a honeycomb composite electrode array, which can be embedded within the curved surface of the top air duct of the refrigerator or freezer compartment of the refrigeration equipment. Multiple gradient electric field networks can be constructed through the alternating arrangement of positive and negative electrodes in the electrode array. At least a three-dimensional gradient sterilization electric field, including a high-intensity electric field, a decreasing intensity field, and a weak electric field, can be constructed. The high-intensity electric field generated by the high-density electrode clusters in the top layer can serve as the main sterilization zone in the refrigeration equipment; the decreasing intensity field formed by the transitional electrodes in the middle layer can serve as the dynamic purification layer in the refrigeration equipment; and the weak electric field extending to the depths of the refrigeration equipment drawers or to the bottom corners of the refrigeration equipment can serve as a long-lasting antibacterial layer in the refrigeration equipment. This application provides a sterilization device for refrigeration equipment. In response to the power-on signal of the refrigeration equipment, a multi-gradient sterilization electric field can be activated. Then, sensor signals from sensors within the refrigeration equipment are received. Based on these sensor signals, the type of contamination in the refrigeration equipment can be determined. Based on the contamination type, a target sterilization mode can be determined. The multi-gradient sterilization electric field can then be adjusted according to the target sterilization mode to sterilize the refrigeration equipment. Through this process, after activating the multi-gradient sterilization electric field, the electric field force can propagate through the spatial medium within the refrigeration equipment. The high-intensity electric field only acts on the electrode cluster area on the curved surface of the top air duct, rather than directly on the food contact surface; the electric field force is propagated only through the air medium. By embedding the electrode array within the curved surface of the top air duct, combined with the attenuation characteristics of electric field energy in the air, it can be ensured that the multi-gradient sterilization electric field only acts on microorganisms in the airflow path, preventing the surface of food stored in the refrigeration equipment from being directly exposed to the strong electric field, thereby completely avoiding the risk of oxidative damage. By constructing and enabling a multi-gradient sterilization electric field, gradient-based safe sterilization can be achieved in refrigeration equipment. Furthermore, by determining the corresponding target sterilization mode based on the type of contamination in the refrigeration equipment, the multi-gradient sterilization electric field can be dynamically adjusted, thereby improving the sterilization effect of the refrigeration equipment.

[0170] Optionally, this application embodiment also provides a refrigeration device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the various processes of the above-described refrigeration device sterilization method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0171] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described refrigeration equipment sterilization method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0172] The processor mentioned above is the processor in the refrigeration device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0173] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0174] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0175] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method of degerming a refrigeration appliance, comprising: The cold storage equipment is provided with an electrode array for constructing a multi-gradient sterilization electric field, and the method comprises the following steps: In response to a power-on signal of the cold storage equipment, the multi-gradient sterilization electric field is enabled; the multi-gradient sterilization electric field comprises a high-intensity electric field, a strength-decreasing field and a weak electric field; Receiving a sensor signal sent by a sensor in the cold storage equipment; Determining a pollution type of the cold storage equipment according to the sensor signal; the pollution type comprises an open-door intrusion, mold pollution, bacterial pollution and mixed pollution; According to the pollution type, a target sterilization mode is determined, including: in the case that the pollution type is open-door intrusion, the target sterilization mode is determined as a strong pulse mode; in the case that the pollution type is mold pollution, the target sterilization mode is determined as a high-frequency mode; in the case that the pollution type is bacterial pollution, the target sterilization mode is determined as a low-frequency mode; in the case that the pollution type is mixed pollution, the target sterilization mode is determined as a mixed frequency mode; According to the target sterilization mode, the multi-gradient sterilization electric field is adjusted to sterilize the cold storage equipment, including: in the case that the target sterilization mode is a mixed frequency mode, the concentration of mold spores and the concentration of bacteria detected by the sensor are determined according to the sensor signal; the proportion of the time length of the high-frequency mode in the preset unit sterilization time is determined according to the concentration of mold spores and the concentration of bacteria; the high-frequency mode and the low-frequency mode are switched according to the proportion of the time length.

2. The method of claim 1, wherein, The cold storage equipment is provided with at least a door magnetic sensor, an ion concentration sensor and a biological sensor, and the determination of the pollution type of the cold storage equipment according to the sensor signal comprises: According to the sensor signal sent by the ion concentration sensor and at least one of the sensor signals sent by the door magnetic sensor and the biological sensor, the pollution type of the cold storage equipment is determined; the door magnetic sensor is used to detect the opening and closing of the equipment door of the cold storage equipment; the ion concentration sensor is used to detect the ion concentration of the air in the cold storage equipment; the biological sensor is used to detect the specific markers of microorganisms in the cold storage equipment.

3. The method of claim 2, wherein, According to the sensor signal sent by the ion concentration sensor and at least one of the sensor signals sent by the door magnetic sensor and the biological sensor, the pollution type of the cold storage equipment is determined, comprising: In the case that the door magnetic sensor sends an open-door signal and the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration, the pollution type of the cold storage equipment is determined as open-door intrusion.

4. The method of claim 2, wherein, The specific markers of the microorganisms at least include bacterial biofilm markers and mold spore markers, and the determination of the pollution type of the cold storage equipment according to the sensor signal sent by the ion concentration sensor and at least one of the sensor signals sent by the door magnetic sensor and the biological sensor comprises: In the case that the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration and the biological sensor detects mold spore markers, the pollution type of the cold storage equipment is determined as mold pollution; In a case where the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration and the biosensor detects a bacterial biofilm marker, it is determined that the contamination type of the refrigeration equipment is bacterial contamination. In a case where the ion concentration sensor detects that the ion concentration in the air is greater than a preset concentration and the biosensor detects both a bacterial biofilm marker and a mold spore marker, it is determined that the contamination type of the refrigeration equipment is mixed contamination.

5. The method of claim 1, wherein, The method further comprises: in response to a power-on signal of the refrigeration equipment, running a preset sterilization mode; before the adjusting of the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment, the method further comprises: determining a currently running preset sterilization mode according to a current time; in a case where the preset sterilization mode is different from the target sterilization mode, adjusting the multi-gradient sterilization electric field according to the target sterilization mode.

6. The method of claim 1, wherein, The refrigeration equipment is provided with a refrigeration air duct, and a group of inclined flow guide fins is installed downstream of the refrigeration air duct, and the method further comprises: after the multi-gradient sterilization electric field is enabled, blowing the charged particles generated by the multi-gradient sterilization electric field through the refrigeration air duct.

7. The method of claim 1, wherein, The refrigeration equipment is provided with a dust collection unit, and the dust collection unit is provided with a dust collection ring and a spectrum sensor, and the method further comprises: detecting the color of the dust collection ring through the spectrum sensor; determining the contamination amount of the dust collection unit according to the color of the dust collection ring; in a case where the contamination amount is greater than a preset contamination amount threshold, pushing a dust collection ring cleaning prompt to a user.

8. A refrigerating appliance sterilization device, characterized in that, The refrigeration equipment is deployed with an electrode array for constructing a multi-gradient sterilization electric field, and the device comprises: an enabling module configured to enable the multi-gradient sterilization electric field in response to a power-on signal of the refrigeration equipment; the multi-gradient sterilization electric field comprises a high-intensity electric field, a strength-decreasing field, and a weak electric field; a receiving module configured to receive a sensor signal sent by a sensor in the refrigeration equipment; a contamination type determination module configured to determine a contamination type of the refrigeration equipment according to the sensor signal; the contamination type comprises door opening intrusion, mold contamination, bacterial contamination, and mixed contamination; a target sterilization mode determination module configured to determine a target sterilization mode according to the contamination type; in a case where the contamination type is door opening intrusion, the target sterilization mode is determined to be a strong pulse mode; in a case where the contamination type is mold contamination, the target sterilization mode is determined to be a high-frequency mode; in a case where the contamination type is bacterial contamination, the target sterilization mode is determined to be a low-frequency mode; and in a case where the contamination type is mixed contamination, the target sterilization mode is determined to be a mixed frequency mode. The adjusting module is configured to adjust the multi-gradient sterilization electric field according to the target sterilization mode to sterilize the refrigeration equipment, including: in the case that the target sterilization mode is a mixed frequency mode, determining the concentration of mold spores and the concentration of bacteria detected by the sensor according to the sensor signal; determining the proportion of the time length of the high-frequency mode in a preset unit sterilization time according to the concentration of mold spores and the concentration of bacteria; and switching the high-frequency mode and the low-frequency mode according to the proportion of the time length.

9. A cold appliance, characterized in A processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions being executed by the processor to implement the steps of the refrigeration equipment sterilization method as claimed in claims 1-7.

10. A readable storage medium, characterized by, A program or instructions stored on the readable storage medium, the program or instructions being executed by the processor to implement the steps of the refrigeration equipment sterilization method as claimed in claims 1-7.

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