A refrigerator and a method for deodorizing and controlling odors.

Abstract

This application discloses a refrigerator and an odor-removing control method. The method includes: acquiring the humidity value inside the refrigerator compartment when it is determined that an odor purification device needs to be activated; controlling a humidifier to activate compensatory humidification when the humidity value inside the refrigerator compartment is less than a preset humidity threshold; and controlling the odor purification device to activate when the humidity value inside the refrigerator compartment is greater than or equal to the preset humidity threshold. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than a first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than a second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first and second preset humidity values. According to the embodiments of this application, the ozone concentration can be reduced, the odor removal effect can be improved, and water consumption can be minimized, thereby improving the user experience.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and more particularly to a refrigerator and a method for odor control. Background Technology

[0002] An odor purifier is a functional module or system installed inside a refrigerator to remove odors and inhibit bacterial growth. Its core function is to eliminate odorous gases (such as ammonia, hydrogen sulfide, and methanethiol) produced by food storage inside the refrigerator, while killing or inhibiting common foodborne pathogens (such as Listeria, Salmonella, and Escherichia coli).

[0003] Currently, the most commonly used odor purification device is the ion generator. Ion generators ionize the air using a high-voltage electric field, producing a large number of positive and negative ions and other active particles. These active particles oxidize bacteria and odor molecules, thus achieving a purification effect. However, this process also produces ozone, which is highly irritating and can cause discomfort to users if inhaled. Summary of the Invention

[0004] This application provides a refrigerator and a method for controlling odor removal, which can reduce ozone concentration, improve odor removal effect, and minimize water consumption, thereby enhancing user experience.

[0005] In a first aspect, a refrigerator is provided, comprising: a cabinet, in which a storage compartment is formed, the storage compartment including at least a refrigeration compartment; Odor purification device, installed in the storage room, is used to purify odorous gases in the storage room. The odor purification device generates ozone when it is running. A humidifier is installed inside the refrigerator compartment to regulate the humidity level inside the refrigerator compartment; The controller connected to the odor purification device and the humidification device is configured as follows: When it is determined that the odor purification device needs to be activated, obtain the humidity value inside the refrigerator compartment; If the humidity level in the refrigerator compartment is lower than the preset humidity threshold, the humidifier will be activated to compensate for the humidity. When the humidity value in the refrigerator is greater than or equal to the preset humidity threshold, the odor purification device is activated. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than the first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than the second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value.

[0006] In some embodiments, when the humidity level in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the humidity difference between the increased humidity value inside the refrigerator and the preset humidity threshold. If the humidity difference is greater than or equal to the preset difference, the humidifier will stop compensating for humidification. If the humidity difference is less than the preset difference, the humidifier will continue to compensate for humidification until the humidity difference reaches the preset difference.

[0007] In some embodiments, when the humidity level in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the preset operating time of the odor purification device; The preset difference is determined based on the preset running time. The preset difference is greater than the humidity decrease rate, which is the decrease in humidity in the refrigerator compartment when the odor purification device runs for the preset running time. The preset running time and the preset difference are positively correlated.

[0008] In some embodiments, when the humidity value in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to immediately control the humidifier to stop compensating for humidification.

[0009] In some embodiments, the refrigerator further includes at least two humidity sensors, wherein when acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured to: Acquire at least two first sampled values ​​collected by at least two humidity sensors respectively; The average of at least two first sampled values ​​is determined as the humidity value inside the refrigerator.

[0010] In some embodiments, the refrigerator further includes at least two humidity sensors, wherein when acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured to: Acquire a second sample value from the first target sensor among at least two humidity sensors, wherein the sampling end of the first target sensor is adjacent to the output end of the odor purification device; The second sample value was determined as the humidity value inside the refrigerator.

[0011] In some embodiments, the humidification device includes at least two humidification units, and when the humidification device is activated for compensated humidification, the controller is specifically configured to: Control the operation of the first humidifying unit in at least two humidifying units, wherein the humidification area corresponding to the first humidifying unit is adjacent to the output end of the odor purification device.

[0012] In some embodiments, the refrigerator further includes: at least two ozone concentration sensors, the humidification device including at least two humidification units, and when controlling the humidification device to start compensated humidification, the controller is configured to: Acquire at least two third sampling values ​​collected by at least two ozone concentration sensors; The collection area corresponding to the second target sensor among at least two ozone concentration sensors is taken as the target humidification area, wherein the third sample value collected by the second target sensor is greater than the preset concentration threshold. Control the operation of the second humidification unit in at least two humidification units, wherein the humidification area corresponding to the second humidification unit matches the target humidification area.

[0013] In some embodiments, when it is determined that the odor purification device needs to be activated, the controller is further configured to: If the concentration of odorous gases in the storage room exceeds the preset concentration threshold, it is determined that the odor purification device needs to be activated. Upon receiving an odor removal command sent by the user through a terminal device, it is determined that the odor purification device needs to be activated. If the current time reaches the preset start time of the odor purification device, it is determined that the odor purification device needs to be activated.

[0014] Secondly, a method for controlling odor removal is provided, including: when it is determined that an odor purification device needs to be activated, obtaining the humidity value inside the refrigerator compartment; If the humidity level in the refrigerator compartment is lower than the preset humidity threshold, the humidifier will be activated to compensate for the humidity. When the humidity value in the refrigerator is greater than or equal to the preset humidity threshold, the odor purification device is activated. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than the first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than the second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value.

[0015] In the above embodiments, a refrigerator and an odor control method are provided. Through the control logic linking the odor purification device and the humidification device, the ozone released by the odor purification device can be absorbed by the atomized water flow and converted into highly oxidizing hydroxyl radicals. This synergistic strategy can: extend the working time of the odor purification device, thus releasing more negative ions and improving the sterilization and purification effect; reduce the ozone concentration inside the refrigerator, preventing ozone exceedances while ensuring user health; and convert harmful ozone into highly oxidizing hydroxyl radicals, further enhancing the sterilization and purification effect. Furthermore, by activating the odor purification device only when the humidity in the refrigerator compartment reaches a preset humidity threshold, the ozone dissolution and conversion efficiency can be improved, and water consumption can be minimized, thus resolving the contradiction between ozone dissolution and conversion and water consumption. The odor control method includes: when it is determined that the odor purification device needs to be activated, obtaining the humidity value inside the refrigerator; when the humidity value inside the refrigerator is less than a preset humidity threshold, controlling the humidification device to start compensating humidification; when the humidity value inside the refrigerator is greater than or equal to the preset humidity threshold, controlling the odor purification device to start, the ozone dissolution and conversion efficiency increases with the humidity value, when the humidity value is less than a first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than a second preset humidity value, the first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a refrigerator provided in an embodiment of this application; Figure 2 This is another external structural diagram of the refrigerator provided in an embodiment of this application; Figure 3 This is an exploded view of the humidification device provided in the embodiments of this application; Figure 4 This is another exploded view of the humidification device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the air duct in the refrigerator compartment provided in an embodiment of this application; Figure 6 This is a block diagram of the internal structure of a refrigerator provided in an embodiment of this application; Figure 7 This is a structural block diagram of a controller provided in an embodiment of this application; Figure 8 This is a flowchart of an odor control method provided in an embodiment of this application; Figure 9 This is a graph showing the change in ozone concentration under different humidity values ​​provided in the embodiments of this application; Figure 10This is a flowchart illustrating an example of odor control provided in an embodiment of this application. Detailed Implementation

[0017] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0018] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0019] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0020] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0021] To maintain a fresh odor inside refrigerators, the industry currently primarily utilizes ion technology, catalytic technology, and electric field-assisted catalytic technology for sterilization and odor removal. Ion technology, in particular, releases positive and negative ions and strong oxidizing substances from the odor purification device to oxidize odor molecules, thereby mineralizing them and achieving effective odor removal. However, this process inevitably produces ozone, and excessive ozone release can affect human health, causing discomfort upon inhalation. Therefore, strict control of ozone production is necessary, significantly limiting the continuous operating time of the odor purification device. The effectiveness of sterilization and purification is strongly correlated with the operating time of the odor purification device; the longer the continuous operating time, the greater the ion release, and the better the sterilization and purification effect. However, extending the operating time of the odor purification device increases both the release of negative ions and ozone levels. This leads to the current practice of using a fixed operating logic to periodically activate the odor purification device for deodorization: after the user closes the refrigerator door, the odor purification device begins periodic operation, starting with t1 (working period), stopping with t2 (short idle period for ion diffusion), running for M cycles, followed by a long idle period T (long idle period for ozone decomposition), and then repeating the process. In other words, the operation of the odor purification device consists of three parts: a working period (t1), a short idle period (t2), and a long idle period (T); the values ​​of t1, t2, and T are fixed during operation. This means the odor purification device works for a period and then stops for a period. The stopping process is for ion diffusion, and another important reason is to allow ozone to gradually decompose, thus avoiding the risk of ozone accumulation caused by continuous operation. At the same time, t1 and M are set conservatively, failing to fully utilize its sterilization and deodorization capabilities, affecting the final deodorization effect of the refrigerator. Therefore, this application provides a refrigerator and an odor control method.

[0022] Figure 1 This is a schematic diagram of the external structure of a refrigerator provided in an embodiment of this application. Figure 2 This is another external structural diagram of the refrigerator provided in an embodiment of this application. See also... Figures 1-2 The refrigerator 100 of this embodiment has an approximately rectangular shape. The refrigerator includes a cabinet defining a storage space and multiple doors located at the opening of the cabinet. Each door includes a door shell located outside the cabinet, a door inner liner located inside the cabinet, an upper cover, a lower cover, and an insulation layer located between the door shell, door inner liner, upper cover, and lower cover; typically, the insulation layer is filled with foam material. The cabinet has chambers, each including storage space for storing food, etc. These storage spaces can be divided into multiple storage compartments. Depending on their purpose, these compartments can be configured as a refrigerator compartment 10 and a freezer compartment 20, and may also include a variable temperature compartment, a vacuum drawer, a humidifier drawer, etc. Each storage compartment corresponds to one or more doors, for example, in... Figure 1The upper storage compartment features double doors. These doors can pivot at the opening of the cabinet or open like drawers for drawer-style storage. The compartment also includes a component storage space for refrigerator parts. This component storage space contains a humidifier 30, which can be an ultrasonic humidifier with high humidification efficiency and low noise. Alternatively, the humidifier 30 can utilize pressure atomization, such as a spray nozzle or centrifugal atomizer.

[0023] Figure 3 This is an exploded view of the humidification device provided in the embodiments of this application. Figure 4 This is another exploded view of the humidification device provided in the embodiments of this application. See also... Figures 3-4The humidifier 30 has a mist outlet 301, through which it sprays water mist into the refrigerator compartment 10 to increase the humidity. The humidifier 30 includes a base 310, which is the outer casing of the humidifier 30. The base 310 is fixed to the casing by methods including, but not limited to, screw fixing or snap-fitting. The base 310 forms a mounting cavity 311 for mounting the humidifying component of the humidifier 30. The mounting cavity 311 has a disassembly port 312, through which the humidifying component of the humidifier 30 is installed in the mounting cavity 311, or detached from the mounting cavity 311. The humidifier 30 also includes a water tank 320 with a water inlet 321 for adding water. When water needs to be added, the water tank 320 is pulled out of the mounting cavity 311 through the disassembly port 312. The water box 320 includes a box body 324, a first cover 325, and a second cover 326, wherein a mist outlet 301 is disposed on the box body 324. The box body 324 forms a chamber with a top opening, and a partition is provided on the box body 324 to divide the chamber into different chambers. A non-communicating water storage chamber 322 and an electrical chamber 323 are formed within the box body 324. The water storage chamber 322 is used for water storage, and the electrical chamber 323 is used for housing electrical components. The water storage chamber 322 and the electrical chamber 323 are isolated from each other, reducing the possibility of moisture erosion of the electrical components. The first cover 325 is placed over the water storage chamber 322, forming a closed water storage space; the second cover 326 is placed on top of the box body 324 to cover the first cover 325, the electrical chamber 323, and the wiring within the box body 324, making the water box 320 appear wireless. The humidifier 30 also includes an atomizer 330, which is installed in the water storage chamber 322 and configured to generate water mist. The mist outlet of the atomizer 330 is opposite to the mist outlet 301, facilitating the spraying of water mist into the refrigerator compartment 10. The humidifier 30 also includes a water tank drive plate 340, which is installed in the electrical cavity 323 and electrically connected to the atomizer 330 to control its operating state. The humidifier 30 also includes an electrical connector 350, located in the electrical cavity 323 and electrically connected to the water tank drive plate 340. Furthermore, the electrical connector 350 is detachably electrically connected to an electrical connection structure within the base 310, which is electrically connected to the refrigerator's power supply and control device via cables. When the water box 320 is installed in the base 310, the electrical connector 350 is electrically connected to the electrical connection structure in the base 310. The power supply of the refrigerator provides power to the atomizer 330 through the electrical connector 350 and the electrical connection structure in the base 310. The refrigerator's control device is electrically connected to the water box drive board 340 through the electrical connector 350 and the electrical connection structure in the base 310, and controls the working state of the atomizer 330.When the water box 320 is removed from the base 310, the electrical connector 350 separates from the electrical connection structure inside the base 310, thereby de-energizing the atomizer 330 and the water box drive board 340 inside the water box 320, allowing for safe water replenishment.

[0024] Figure 5 This is a schematic diagram of the air duct in the refrigerator compartment provided in an embodiment of this application. See also... Figure 5 A gas sensor 11 is installed inside the refrigerator compartment 10 to detect the concentration of odorous gases flowing into the compartment. An odor purification device 12 is installed inside the refrigerator compartment 10 to purify the odors in the compartment. The odor purification device 12 can be, for example, an ion generator, which purifies the air by generating negative and positive ions. A fan 13 is installed inside the refrigerator air duct 101 to circulate the gas within the refrigerator air duct and the refrigerator compartment 10.

[0025] Figure 6 This is a block diagram of the internal structure of a refrigerator provided in an embodiment of this application. See also... Figure 6 The refrigerator also includes a controller 14, which is connected to electrical components in the gas sensor 11, the odor purification device 12, and the humidification device 30. The controller 14 receives the concentration of odor gases in the storage compartment detected by the gas sensor 11. The controller 14 can also control the start and stop of the odor purification device 12.

[0026] Figure 7 This is a structural block diagram of a controller provided in an embodiment of this application. See also... Figure 7The controller 14 includes a processor 141 and a memory 142 storing computer program instructions. The processor 141 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of this disclosure. The memory 142 may include a mass storage device for information or instructions. For example, and not limitingly, the memory 142 may include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disk drive, a magneto-optical disk drive, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 142 may include removable or non-removable (or fixed) media. Where appropriate, the memory 142 may be internal or external to the integrated gateway device. In a particular embodiment, the memory 142 is a non-volatile solid-state memory. In a particular embodiment, the memory 142 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (Electrically Programmable ROM, EPROM), an electrically erasable PROM (EEPROM), an electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these. The processor 141 executes the steps of the control method for the refrigerator 100 provided in this disclosure by reading and executing computer program instructions stored in the memory 142. In one example, the controller 14 may further include a transceiver 143 and a bus 144. As shown in the figures, the processor 141, the memory 142, and the communication interface are connected via the bus 144 and communicate with each other. The communication interface can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface can be a module, circuit, transceiver, or any device capable of communication. Bus 144 includes peripheral component interconnect (PCI) lines or extended industry standard architecture (EISA) buses, etc.Bus 144 can be divided into address bus, data bus, control bus, etc.

[0027] In some embodiments, the controller is configured to acquire the humidity value inside the refrigerator compartment when it is determined that the odor purification device needs to be activated; If the humidity level in the refrigerator compartment is lower than the preset humidity threshold, the humidifier will be activated to compensate for the humidity. When the humidity value in the refrigerator is greater than or equal to the preset humidity threshold, the odor purification device is activated. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than the first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than the second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value.

[0028] In some embodiments, when the humidity level in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the humidity difference between the increased humidity value inside the refrigerator and the preset humidity threshold. If the humidity difference is greater than or equal to the preset difference, the humidifier will stop compensating for humidification. If the humidity difference is less than the preset difference, the humidifier will continue to compensate for humidification until the humidity difference reaches the preset difference.

[0029] In some embodiments, when the humidity level in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the preset operating time of the odor purification device; The preset difference is determined based on the preset running time. The preset difference is greater than the humidity decrease rate, which is the decrease in humidity in the refrigerator compartment when the odor purification device runs for the preset running time. The preset running time and the preset difference are positively correlated.

[0030] In some embodiments, when the humidity value in the refrigerator compartment is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the controller is further configured to immediately control the humidifier to stop compensating for humidification.

[0031] In some embodiments, the refrigerator further includes at least two humidity sensors, wherein when acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured to: Acquire at least two first sampled values ​​collected by at least two humidity sensors respectively; The average of at least two first sampled values ​​is determined as the humidity value inside the refrigerator.

[0032] In some embodiments, the refrigerator further includes at least two humidity sensors, wherein when acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured to: Acquire a second sample value from the first target sensor among at least two humidity sensors, wherein the sampling end of the first target sensor is adjacent to the output end of the odor purification device; The second sample value was determined as the humidity value inside the refrigerator.

[0033] In some embodiments, the humidification device includes at least two humidification units, and when the humidification device is activated for compensated humidification, the controller is specifically configured to: Control the operation of the first humidifying unit in at least two humidifying units, wherein the humidification area corresponding to the first humidifying unit is adjacent to the output end of the odor purification device.

[0034] In some embodiments, the refrigerator further includes: at least two ozone concentration sensors, the humidification device including at least two humidification units, and when controlling the humidification device to start compensated humidification, the controller is configured to: Acquire at least two third sampling values ​​collected by at least two ozone concentration sensors; The collection area corresponding to the second target sensor among at least two ozone concentration sensors is taken as the target humidification area, wherein the third sample value collected by the second target sensor is greater than the preset concentration threshold. Control the operation of the second humidification unit in at least two humidification units, wherein the humidification area corresponding to the second humidification unit matches the target humidification area.

[0035] In some embodiments, when it is determined that the odor purification device needs to be activated, the controller is further configured to: If the concentration of odorous gases in the storage room exceeds the preset concentration threshold, it is determined that the odor purification device needs to be activated. Upon receiving an odor removal command sent by the user through a terminal device, it is determined that the odor purification device needs to be activated. If the current time reaches the preset start time of the odor purification device, it is determined that the odor purification device needs to be activated.

[0036] Figure 8 This is a flowchart of an odor control method provided in an embodiment of this application. See also... Figure 8 The method includes: S810. When it is determined that the odor purification device needs to be activated, obtain the humidity value inside the refrigerator.

[0037] Specifically, there are various ways to "determine whether the odor purification device needs to be activated". Typical examples are described below, but they do not constitute a limitation of this application.

[0038] Optionally, the odor purification device needs to be activated under any of the following conditions: the concentration of odor gas in the storage room is greater than a preset concentration threshold; an odor removal command is received from the user via a terminal device; or the current time reaches the preset activation time of the odor purification device.

[0039] Specifically, the storage room is equipped with gas sensors to monitor the concentration of odor gases. When the concentration of odor gases exceeds a preset threshold, the odor purification device is activated. This eliminates the need for manual intervention and provides a timely response when the concentration of odor gases exceeds the limit.

[0040] Specifically, users can actively send odor removal commands via a mobile app or smart speaker. Upon receiving the command, the controller will determine that the odor purification device needs to be activated regardless of the current concentration of the odor gas. In this way, users can flexibly activate the odor purification device based on their subjective perception of the odor.

[0041] Specifically, users can preset fixed purification times (such as 2 AM every day, or every 4 hours). When the system clock reaches this purification time, it automatically determines that the odor purification device needs to be activated. In this way, preventative purification can be achieved, proactively addressing odors before they can develop.

[0042] Specifically, the humidity value inside the refrigerator is used to reflect the air humidity inside the refrigerator.

[0043] In some embodiments, the refrigerator further includes: at least two humidity sensors to acquire humidity values ​​inside the refrigerator compartment, including: acquiring at least two first sampling values ​​collected by the at least two humidity sensors respectively; The average of at least two first sampled values ​​is determined as the humidity value inside the refrigerator.

[0044] Specifically, different humidity sensors are placed in different locations inside the refrigerator to collect humidity data from different humidity collection areas inside the refrigerator.

[0045] Specifically, the first sampled value refers to the humidity data collected by the humidity sensor at a certain moment or within a certain time period. In one example, the first sampled value can be the instantaneous value output by the humidity sensor. In another example, the first sampled value can also be the value obtained after preprocessing (such as taking the average, maximum, minimum, or median value) multiple collection results from the humidity sensor over a period of time. However, it is not limited to these examples.

[0046] Specifically, the average value of the first sampled values ​​collected by each humidity sensor is calculated to obtain the humidity value inside the refrigerator.

[0047] Understandably, by combining the first sampling values ​​from multiple humidity collection areas inside the refrigerator, the overall humidity level inside the refrigerator can be reflected more comprehensively and objectively. This avoids measurement deviations caused by local environmental interference from a single humidity sensor, thereby improving the accuracy and reliability of humidity characterization and thus improving the accuracy and reliability of the odor purification device's start-up timing.

[0048] In some other embodiments, the refrigerator further includes: at least two humidity sensors to acquire humidity values ​​in the refrigerator compartment, including: acquiring a second sampling value of a first target sensor among the at least two humidity sensors, wherein the sampling end of the first target sensor is adjacent to the output end of the odor purification device; The second sample value was determined as the humidity value inside the refrigerator.

[0049] Specifically, the sampling end of the first target sensor is placed close to the output end of the odor purification device so that the first target sensor can collect the humidity value around the output end of the odor purification device. The output end of the odor purification device refers to the air outlet that discharges clean air after the air has been processed.

[0050] Specifically, the second sampled value refers to the humidity data collected by the first target sensor at a certain moment or within a certain time period. In one example, the second sampled value can be the instantaneous value output by the first target sensor. In another example, the second sampled value can also be a value obtained after preprocessing (such as taking the average, maximum, minimum, median, etc.) multiple collection results from the first target sensor over a period of time. However, it is not limited to these examples.

[0051] Understandably, the ozone concentration is highest around the output of the odor purification device, therefore, the humidity requirements around the output are also the most stringent. Using the humidity value around the output as the humidity value for the refrigerator compartment ensures that humidity control prioritizes the efficient dissolution and conversion of ozone around the output, thereby improving the overall purification effect within the refrigerator compartment.

[0052] In some other embodiments, the refrigerator further includes: at least two humidity sensors to acquire humidity values ​​inside the refrigerator compartment, including: acquiring at least two first sample values ​​collected by the at least two humidity sensors respectively; The humidity value is determined by taking the weighted average of at least two first sampled values. The weighting coefficient is pre-set based on the ease of ozone accumulation (or ozone concentration) in the humidity collection area corresponding to the first sampled value. The easier it is for ozone to accumulate (or the higher the ozone concentration), the larger the weighting coefficient.

[0053] S820: When the humidity value in the refrigerator compartment is less than the preset humidity threshold, control the humidifier to start compensating humidification.

[0054] Specifically, the working principle of an odor purification device is to apply high voltage to the discharge electrodes through a high-voltage circuit, causing corona discharge, which ionizes the surrounding air, generating a large number of positive and negative ions and other active particles, along with ozone. In other words, the positive and negative ions and ozone originate from the ionization of the air surrounding the odor purification device; therefore, the composition of the surrounding air will affect the final ionization result. The main components of air are nitrogen, oxygen, water, and carbon dioxide (approximately 78% nitrogen, 21% oxygen, 0.9% argon, and 0.1% water and carbon dioxide). In a refrigerator environment, the content of nitrogen and oxygen does not change significantly, while the moisture content can be adjusted using a humidifier.

[0055] Under no-load conditions, the humidity level in the refrigerator compartment is approximately 35% RH. After humidification with a humidifier, the humidity level can reach around 95% RH. This significant change in humidity indicates a substantial difference in the moisture content within the odor purification device's working environment, leading to variations in the air ionization process. The change in ozone concentration is primarily due to two factors: firstly, ozone dissolves in high humidity environments; secondly, the electrode discharge of the odor purification device converts ozone into hydroxyl radicals, further reducing the ozone concentration. Hydroxyl radicals, being the most reactive free radicals with the highest oxidation potential in nature, effectively enhance the odor purification device's sterilization and purification capabilities.

[0056] However, the water tank capacity of humidifiers is limited. Excessive use of additional humidifiers could significantly increase water consumption, leading to more frequent refills and a poor user experience. Therefore, water consumption must be considered when odor purifiers and humidifiers work together; simply increasing the humidity level in the refrigerator compartment is insufficient. To resolve the conflict between ozone dissolution and water consumption, tests were conducted on ozone dissolution and humidification. Relevant parameters under different humidity conditions were studied, as shown in Table 1. Figure 9 As shown in Table 2: Table 1

[0057] From Table 1 and Figure 9 It can be seen that as the humidity level (referring to the average humidity level) in the refrigerator increases, the ozone concentration gradually decreases within the same time period. Furthermore, the change in ozone concentration diminishes once the humidity exceeds 75% RH. In other words, if the humidity level in the refrigerator can be maintained at 75% RH during the operation of the odor purification device, it can effectively reduce the ozone concentration and minimize the amount of humidification required. This minimizes the increase in water consumption caused by the humidifier assisting the odor purification device in reducing ozone, thus avoiding increased water refill frequency for the user.

[0058] Table 2

[0059] As can be seen from Table 2, when the ozone concentration is fixed at 0.05 ppm (the national standard requires that it should not exceed 0.05 ppm), when the humidity value in the cold storage room increases from 35% to 75%, the continuous working time of the odor purification device increases from 10s to 17s, and the working time of the odor purification device is significantly improved.

[0060] Further research revealed a non-linear relationship between ozone dissolution and conversion efficiency and humidity. Specifically, ozone dissolution and conversion efficiency generally increases with increasing humidity, but the growth rate varies significantly across different humidity ranges. When the humidity is below a first preset humidity value, the growth rate of ozone dissolution and conversion efficiency with increasing humidity is higher; when the humidity is above a second preset humidity value, the growth rate decreases significantly. Here, the first preset humidity value is less than the second preset humidity value, and the growth rate refers to the increase in ozone dissolution and conversion efficiency per unit increase in humidity. Based on this, this application sets the preset humidity threshold between the first and second preset humidity values, i.e., within the transition range where ozone dissolution and conversion efficiency shifts from high-speed to low-speed growth. Within this range, both high ozone dissolution and conversion efficiency can be achieved, while avoiding water waste caused by excessive humidification. Optionally, the preset humidity threshold is the turning point where ozone dissolution and conversion efficiency shifts from high-speed to low-speed growth; that is, when the humidity is below the preset humidity threshold, the growth rate of ozone dissolution and conversion efficiency with increasing humidity is higher; when the humidity is above the preset humidity threshold, the growth rate decreases significantly. For example, the difference between the first preset humidity value and the second preset humidity value can be less than or equal to 2%, the first preset humidity value can be 74%, the second preset humidity value can be 76%, and the preset humidity threshold can be 75%, but it is not limited to these. For different models (or series) of refrigerators, the ozone dissolution and conversion efficiency of the odor purification device under different humidity environments can be monitored, and the relationship curve between the continuous working time of the odor purification device and the ozone concentration can be plotted. Then, the corresponding first preset humidity value and second preset humidity value can be determined, thereby obtaining the mapping relationship between the model (or series), the first preset humidity value, and the second preset humidity value.

[0061] Specifically, starting compensation humidification means controlling the humidification device to increase the humidification amount in order to supplement the humidification between the current humidity value of the refrigerator compartment (i.e., the humidity value obtained in S810) and the preset humidity threshold.

[0062] In some embodiments, the humidification device includes at least two humidification units, and controlling the humidification device to start compensated humidification includes: controlling the operation of a first humidification unit among the at least two humidification units, wherein the humidification area corresponding to the first humidification unit is adjacent to the output end of the odor purification device (i.e., the output end of the odor purification device is located at the edge of the humidification area corresponding to the first humidification unit), or the output end of the odor purification device is located within the humidification area corresponding to the first humidification unit.

[0063] Specifically, different humidification units are set in different locations within the refrigerator compartment to humidify different humidification areas within the refrigerator compartment.

[0064] The first humidification unit refers to the humidification unit adjacent to the output end of the odor purification device. The humidification area corresponding to the first humidification unit refers to the local space range that the humidification unit mainly affects when it is working, that is, the area that its humidifying airflow can directly cover.

[0065] Specifically, the humidification area corresponding to the first humidification unit is adjacent to the output end of the odor purification device, and the output end of the odor purification device is located at the edge of the humidification range of the first humidification unit.

[0066] It is understandable that the ozone concentration around the output of the odor purification device is usually higher than in other areas. Therefore, the compensating humidification operation can be limited to the humidification area corresponding to the first humidification unit to specifically increase the humidity value of that area, thereby specifically improving the ozone dissolution and conversion efficiency in that area. In this way, not only can the ozone concentration be reduced, but water use efficiency can also be improved, achieving the effect of saving water.

[0067] In other embodiments, the refrigerator further includes: at least two ozone concentration sensors, the humidification device includes at least two humidification units, and controlling the humidification device to start compensated humidification includes: acquiring at least two third sampling values ​​collected by the at least two ozone concentration sensors respectively; The collection area corresponding to the second target sensor among at least two ozone concentration sensors is taken as the target humidification area, wherein the third sample value collected by the second target sensor is greater than the preset concentration threshold. Control the operation of the second humidification unit in at least two humidification units, wherein the humidification area corresponding to the second humidification unit matches the target humidification area.

[0068] Specifically, different ozone concentration sensors are placed in different locations within the refrigerator to collect ozone concentration data from different ozone collection areas within the refrigerator.

[0069] Specifically, the third sampled value refers to the ozone concentration data collected by the ozone concentration sensor at a certain moment or within a certain time period. In one example, the first sampled value can be the instantaneous value output by the ozone concentration sensor. In another example, the first sampled value can also be the value obtained after preprocessing (such as taking the average, maximum, minimum, or median value) multiple collection results from the ozone concentration sensor over a period of time. However, it is not limited to these.

[0070] Specifically, for the collection area corresponding to the ozone concentration sensor, if the corresponding third sampling value is higher than the preset concentration threshold, it will be included in the target humidification area; otherwise, it will not be included in the target humidification area.

[0071] Specifically, for a humidification unit, if the overlap rate between its corresponding humidification area and the target humidification area is greater than a preset overlap threshold, then it is identified as a second humidification unit. It should be noted that the specific value of the preset overlap threshold can be set by those skilled in the art according to actual conditions; for example, it can be arbitrarily selected within the range of 50% to 80%, but is not limited to this.

[0072] It is understandable that by limiting the humidification operation to the humidification area corresponding to the second humidification unit, the humidity value of the area with high ozone concentration can be increased in a targeted manner, thereby specifically improving the ozone dissolution and conversion efficiency in that area. In this way, not only can the ozone concentration be reduced, but water use efficiency can also be improved, achieving the effect of saving water.

[0073] In some other embodiments, the humidification device humidifies the entire refrigerator compartment, which can simultaneously raise the humidity value of each area in the refrigerator compartment to a preset humidity threshold, thereby greatly improving the ozone dissolution and conversion efficiency and significantly reducing the ozone concentration in the refrigerator.

[0074] S830: When the humidity value in the refrigerator compartment is greater than or equal to the preset humidity threshold, the odor purification device is activated.

[0075] Specifically, starting the odor purification device means controlling it to begin operation until the purification cycle is complete. The triggering conditions for the end of this purification cycle include, but are not limited to, at least one of the following: odor concentration decreases to a preset threshold, the timer ends at a specified time, a user-triggered end command is received via a terminal device or the refrigerator's control panel, a preset number of operating cycles is completed, the refrigerator door is opened, or the cumulative operating time reaches a preset operating time.

[0076] Specifically, after the odor purification device starts running, it can operate periodically according to the start-up t1 (working period) and stop t2 (small idle period), or it can continue to operate until the purification is completed. This application does not limit this.

[0077] In this embodiment, the control logic linking the odor purification device and the humidification device allows the atomized water flow to absorb the ozone released by the odor purification device and convert it into highly oxidizing hydroxyl radicals. This synergistic strategy can: extend the working time of the odor purification device, thus releasing more negative ions and improving the sterilization and purification effect; reduce the ozone concentration inside the refrigerator, preventing ozone exceedances while ensuring user health; and convert harmful ozone into highly oxidizing hydroxyl radicals, further enhancing the sterilization and purification effect. Furthermore, by activating the odor purification device only when the humidity in the refrigerator compartment reaches a preset threshold, the ozone dissolution and conversion efficiency can be improved, and water consumption can be minimized, thus resolving the contradiction between ozone dissolution and conversion and water consumption.

[0078] In some embodiments, when the humidity value is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the method further includes: obtaining the humidity difference between the increased humidity value in the refrigerator room and the preset humidity threshold. If the humidity difference is greater than or equal to the preset difference, the humidifier will stop compensating for humidification. If the humidity difference is less than the preset difference, the humidifier will continue to compensate for humidification.

[0079] Specifically, the increased humidity difference in the refrigerator compartment refers to the difference between the humidity value in the refrigerator compartment and the preset humidity threshold after compensating for humidification to make the humidity value in the refrigerator compartment greater than or equal to the preset humidity threshold.

[0080] Specifically, if the humidity difference is greater than or equal to the preset difference, it indicates that the humidity level inside the refrigerator compartment differs significantly from the preset humidity threshold after compensatory humidification. In this case, although the humidity level will slowly and naturally decrease over a period of time after stopping compensatory humidification, this process prolongs the time the humidity level remains above or equal to the preset humidity threshold, which is beneficial for continuously promoting the dissolution and conversion of ozone. On the other hand, by avoiding unnecessary continuous humidification, water conservation is achieved.

[0081] Specifically, if the humidity difference is less than the preset difference, it indicates that after compensating for humidification, the humidity level inside the refrigerator is only slightly different from the preset humidity threshold. In this case, by continuing to compensate for humidification until the humidity difference reaches the preset difference, and then stopping the compensation humidification, the time the humidity level remains greater than or equal to the preset humidity threshold can be extended, which is beneficial for continuously promoting the dissolution and conversion of ozone.

[0082] Optionally, when the humidity value in the refrigerator is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the method further includes: obtaining the preset operating time of the odor purification device. The preset difference is determined based on the preset running time. The preset difference is greater than the humidity decrease rate, which is the decrease in humidity value when the odor purification device runs for the preset running time. The preset running time and the preset difference are positively correlated.

[0083] Specifically, the preset running time refers to the cumulative time that the odor purification device is actually in working condition from the time it is started until the end of this purification process.

[0084] Specifically, the decrease refers to the decrease in humidity in the refrigerator compartment from the start of operation to the end of the current purification process (i.e., the end of operation). That is, humidity decrease = humidity value at the start of operation - humidity value at the end of operation.

[0085] Understandably, by setting a preset difference value greater than the humidity decrease, it can be ensured that the humidity decrease remains within the allowable range after the odor purification device finishes operating. This prevents the odor purification device from operating for extended periods with humidity values ​​below the preset threshold, thus promoting the continuous dissolution and conversion of ozone. Simultaneously, the preset operating time is positively correlated with the preset difference value; that is, the longer the preset operating time, the larger the preset difference value. This ensures that the preset humidity threshold matches the humidity decrease value, preventing either insufficient or excessive humidification compensation.

[0086] In some embodiments, when the humidity value is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the method further includes: immediately controlling the humidification device to stop compensating for humidification. This can improve the purification effect while minimizing water consumption, thereby achieving water conservation.

[0087] In some embodiments, when the humidity value is greater than or equal to a preset humidity threshold, after the odor purification device is activated, the method further includes: obtaining the historical humidity difference between the humidity value before humidification and the preset humidity threshold. If the historical humidity difference is less than or equal to the preset difference, the humidifier will stop compensating for humidification. If the historical humidity difference is greater than the preset difference, the humidifier will continue to compensate for humidification.

[0088] Specifically, the historical humidity difference refers to the difference between the humidity value inside the refrigerator and the preset humidity threshold before compensation humidification.

[0089] Specifically, if the historical humidity difference is less than or equal to the preset difference, it indicates that the humidity level in the refrigerator compartment was close to the preset humidity threshold before compensation humidification. In this case, after raising the humidity to above the preset threshold through compensation humidification, the humidity level will slowly and naturally drop after compensation humidification stops because the difference in humidity before and after compensation humidification is small. However, this process also allows the humidity level to remain above or equal to the preset humidity threshold for a longer period, which is beneficial for continuously promoting the dissolution and conversion of ozone; on the other hand, it achieves the effect of saving water.

[0090] Specifically, if the historical humidity difference is greater than the preset difference, it indicates that the humidity level in the refrigerator compartment differed significantly from the preset humidity threshold before compensation humidification. In this case, after the humidity is raised above the preset threshold through compensation humidification, the humidification device continues to maintain compensation humidification because of the large humidity difference before and after compensation humidification. This ensures that the humidity level in the refrigerator compartment is stably maintained near the preset humidity threshold, thereby providing a continuous and stable high-humidity environment for the dissolution and conversion of ozone.

[0091] To illustrate the odor control method provided in this application in detail, a specific example is given below, but this does not constitute a limitation of this application. Figure 10 This is a flowchart illustrating an example of odor control provided in an embodiment of this application. See also... Figure 10Upon initial power-on and door closing, the system checks if the water tank in the humidifier is filled. If not, it prompts the user to add water; otherwise, it humidifies according to the user's selected setting. The humidifier offers three humidity levels: less than 75% RH, approximately 75% RH, and greater than 75% RH. Based on the previous analysis, 75% RH is a humidity level that consumes the least water and effectively reduces ozone concentration. Of the three levels, only the first (less than 75% RH) requires additional humidification; the other two do not, thus not increasing water tank consumption. For the first humidification setting, the atomization water consumption is approximately 18 g / h, which translates to about 5 μl / s. Testing showed that when the average humidity inside the refrigerator is approximately 40% RH (the average humidity at the first setting is greater than 40% RH), humidifying to 75% RH takes approximately 150 seconds and consumes 750 μl of water, close to 1 ml, which may increase the frequency of water refills. Therefore, to reduce water consumption and avoid increasing the frequency of water refills for users, when a user selects the first humidification setting, to achieve a humidity level of 75%RH, the humidifier only needs to temporarily raise the humidity around the odor purification device to 75%RH when it needs to be activated, and it does not need to maintain this level for an extended period. Therefore, the activation time of the odor purification device varies depending on the humidification setting. For the first setting, to achieve a humidity level of 75%RH, the odor purification device needs to complete normal first-level humidification, then activate an additional 55 seconds (Ts) of humidification, and immediately activate the odor purification device to ensure it operates at 75%RH. For the second setting, the humidity level is greater than or equal to 75%RH, with a small probability of a short period where the humidity may be less than 75%RH. Therefore, when it is determined that the odor purification device needs to be activated, the humidity sensor data should be consulted, and the odor purification device should be activated immediately when the humidity level reaches 75%RH. For the third setting, the humidity level is greater than 75%RH, so the activation time of the odor purification device is unlimited; it can be activated immediately when needed.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0093] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: A box, in which a storage room is formed, the storage room including at least a cold storage room; An odor purification device is installed in the storage room to purify odorous gases in the storage room. The odor purification device generates ozone when it is in operation. A humidifier is installed in the refrigerator compartment to regulate the humidity level inside the refrigerator compartment; The controller connected to the odor purification device and the humidification device is configured as follows: When it is determined that the odor purification device needs to be activated, the humidity value inside the refrigerator is obtained; If the humidity level inside the refrigerator is lower than a preset humidity threshold, the humidification device is controlled to start compensatory humidification. When the humidity value in the refrigerator compartment is greater than or equal to the preset humidity threshold, the odor purification device is activated. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than the first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than the second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value.

2. The refrigerator according to claim 1, characterized in that, When the humidity level inside the refrigerator compartment is greater than or equal to the preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the humidity difference between the increased humidity value inside the refrigerator and the preset humidity threshold. If the humidity difference is greater than or equal to a preset difference, the humidification device is controlled to stop compensating for humidification. If the humidity difference is less than the preset difference, the humidification device is controlled to continue compensating for humidification until the humidity difference reaches the preset difference.

3. The refrigerator according to claim 2, characterized in that, When the humidity level inside the refrigerator compartment is greater than or equal to the preset humidity threshold, after the odor purification device is activated, the controller is further configured to: Obtain the preset operating time of the odor purification device; The preset difference is determined based on the preset running time, wherein the preset difference is greater than the humidity decrease rate, and the humidity decrease rate is the decrease rate of the humidity value in the refrigerator compartment when the odor purification device runs for the preset running time. The preset runtime is positively correlated with the preset difference.

4. The refrigerator according to claim 1, characterized in that, When the humidity value in the refrigerator compartment is greater than or equal to the preset humidity threshold, after the odor purification device is activated, the controller is also configured to immediately control the humidification device to stop compensating for humidification.

5. The refrigerator according to any one of claims 1 to 4, characterized in that, The refrigerator also includes at least two humidity sensors. When acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured as follows: Obtain at least two first sampled values ​​collected by the at least two humidity sensors respectively; The average of the at least two first sampled values ​​is determined as the humidity value inside the refrigerator.

6. The refrigerator according to any one of claims 1 to 4, characterized in that, The refrigerator also includes at least two humidity sensors. When acquiring the humidity value inside the refrigerator compartment, the controller is specifically configured as follows: Acquire a second sample value from the first target sensor among the at least two humidity sensors, wherein the sampling end of the first target sensor is adjacent to the output end of the odor purification device; The second sampled value is determined as the humidity value inside the refrigerator.

7. The refrigerator according to any one of claims 1 to 4, characterized in that, The humidification device includes at least two humidification units. When the humidification device is activated for compensated humidification, the controller is specifically configured as follows: Control the operation of the first humidifying unit among the at least two humidifying units, wherein the humidification area corresponding to the first humidifying unit is adjacent to the output end of the odor purification device.

8. The refrigerator according to any one of claims 1 to 4, characterized in that, The refrigerator also includes at least two ozone concentration sensors, and the humidification device includes at least two humidification units. When the humidification device is activated for compensated humidification, the controller is configured to: Acquire at least two third sampling values ​​collected by the at least two ozone concentration sensors respectively; The collection area corresponding to the second target sensor among the at least two ozone concentration sensors is taken as the target humidification area, wherein the third sampling value collected by the second target sensor is greater than a preset concentration threshold. Control the operation of the second humidifying unit among the at least two humidifying units, wherein the humidification area corresponding to the second humidifying unit matches the target humidification area.

9. The refrigerator according to claim 1, characterized in that, When it is determined that the odor purification device needs to be activated, the controller is also configured to: If the concentration of odorous gas in the storage room exceeds a preset concentration threshold, it is determined that the odor purification device needs to be activated. Upon receiving an odor removal command sent by the user through a terminal device, it is determined that the odor purification device needs to be activated; If the current time reaches the preset start time of the odor purification device, it is determined that the odor purification device needs to be activated.

10. A method for controlling odor removal, characterized in that, include: When it is determined that the odor purification device needs to be activated, obtain the humidity value inside the refrigerator compartment; If the humidity level inside the refrigerator is lower than a preset humidity threshold, the humidification device will be activated to compensate for humidification. When the humidity value in the refrigerator compartment is greater than or equal to the preset humidity threshold, the odor purification device is activated. The ozone dissolution and conversion efficiency increases with the humidity value. When the humidity value is less than the first preset humidity value, the growth rate of the dissolution and conversion efficiency with the humidity value is greater than the growth rate of the dissolution and conversion efficiency with the humidity value when the humidity value is greater than the second preset humidity value. The first preset humidity value is less than the second preset humidity value, and the preset humidity threshold is located between the first preset humidity value and the second preset humidity value.

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