Air purifying device, purification control method, and refrigeration apparatus

Abstract

The application discloses an air purification device, a purification control method and refrigeration equipment thereof, and relates to the technical field of electrical equipment, wherein the air purification device comprises a frame, a catalyst module and an ionization module; the catalyst module comprises a carrier, and the carrier is provided with an electrocatalytic material; the ionization module comprises a first electrode and a second electrode; the first electrode is arranged in the catalyst module or the catalyst module is configured as the first electrode; and an ionization zone is formed between the first electrode and the second electrode. By making the airflow flow in the ionization zone in a direction parallel to the catalyst module, the effective area of the airflow passing through the ionization zone is increased, and the single purification effect is improved. Moreover, after the airflow passes through the ionization zone, the airflow flows out through the catalyst module, so that the ionized pollutants and oxidizing substances further react on the surface of the catalyst module, the pollutant removal rate is improved, and the concentration of the oxidizing substances circulating into the air is reduced.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to an air purification device, a purification control method, and a refrigeration device thereof. Background Technology

[0002] In related technologies, refrigerators typically use physical adsorption or chemical decomposition to remove internal odors. However, physical adsorption is prone to saturation and requires periodic replacement, while chemical decomposition often leaves chemical residues, resulting in unsatisfactory odor removal. Plasma catalysis is a relatively good purification method, but in related technologies, the contact area between air and the discharge zone is small, leading to poor purification effects in a single pass. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an air purification device that can improve the purification effect in a single pass.

[0004] The present invention also proposes a purification control method and a refrigeration device using the above-mentioned air purification device.

[0005] An air purification device according to a first aspect of the present invention includes a frame, a catalyst module, and an ionization module. The catalyst module and the ionization module are disposed in the frame. The catalyst module includes a ventilable carrier, and the carrier is provided with an electrocatalytic material. The ionization module includes a first electrode and a second electrode. The first electrode is disposed in the catalyst module or the catalyst module is configured as the first electrode. The second electrode is spaced apart from the catalyst module to form an ionization region between the first electrode and the second electrode. A ventilation channel is provided within the frame. The ventilation channel is configured such that at least one section of the channel within the ionization region allows airflow to flow in a direction parallel to the catalyst module and exit through the catalyst module.

[0006] The air purification device according to embodiments of the present invention has at least the following beneficial effects: by causing the airflow to flow in a direction parallel to the catalyst module within the ionization zone, the effective area of ​​the airflow passing through the ionization zone is increased, thereby improving the purification effect per pass. Furthermore, after passing through the ionization zone, the airflow exits through the catalyst module, allowing the ionized pollutants and oxidizing substances to further react on the surface of the catalyst module, increasing the pollutant removal rate and reducing the concentration of oxidizing substances circulating into the air. Moreover, the ionized gas exiting through the catalyst module can remove ozone that may be generated during the ionization process, and the reaction of ozone with odor molecules on the surface of the catalyst module further enhances the purification effect.

[0007] According to some embodiments of the present invention, the frame includes a partition connecting the catalyst module, the partition being located on the side of the catalyst module opposite to the second electrode, the gas flow passing through the catalyst module from one side of the partition into the ionization region, and exiting the catalyst module from the other side of the partition.

[0008] According to some embodiments of the present invention, the frame includes a guide plate connecting the partition, the guide plate being located on the side of the partition away from the catalyst module, the guide plate and the catalyst module defining a first air inlet and an air outlet.

[0009] According to some embodiments of the present invention, the air purification device includes two catalyst modules, the ionization module includes two first electrodes, and the second electrode is located between the two catalyst modules.

[0010] According to some embodiments of the present invention, a second air inlet is restricted on one side of the two catalyst modules, and a baffle is provided on the other side of the two catalyst modules, with the two ends of the baffle respectively connected to the two catalyst modules.

[0011] According to some embodiments of the present invention, the second electrode is provided with a plurality of tips for generating tip discharge on the side facing the catalyst module, the tips being arranged on the surface of the second electrode.

[0012] According to some embodiments of the present invention, the second electrode includes an insulating layer and a conductive layer, wherein the insulating layer covers the conductive layer.

[0013] According to some embodiments of the present invention, when the catalyst module is configured as the first electrode, the catalyst module includes a conductive frame, the carrier is fixed within the frame, and the carrier or the electrocatalytic material is a conductive material and is electrically connected to the frame.

[0014] According to a second aspect of the present invention, a purification control method is used in an air purification device, the air purification device comprising a frame, a catalyst module, an ionization module, and a fan, wherein the catalyst module and the ionization module are disposed in the frame, the catalyst module comprising a ventilable carrier, the carrier being provided with an electrocatalytic material; the ionization module comprising a first electrode and a second electrode, the first electrode being disposed in the catalyst module or the catalyst module being configured as the first electrode, the second electrode being spaced apart from the catalyst module, and an ionization region being formed between the first electrode and the second electrode; wherein a ventilation channel is provided within the frame, the ventilation channel being configured such that, within the ionization region, at least one section of the channel allows airflow to flow in a direction parallel to the catalyst module and exit through the catalyst module, the method comprising:

[0015] In purification mode, the ionization module and the fan are turned on;

[0016] In regeneration mode, the fan is shut down while the ionization module remains on.

[0017] The purification control method according to embodiments of the present invention has at least the following beneficial effects: the purification control method is applicable to air purification devices. In purification mode, the ionization module and fan are controlled to be turned on and operated. The fan sends air into the ionization zone for purification. In the ionization zone, the degradation efficiency of odor gases can be improved, and the components that cannot be degraded and adsorbed on the surface of the catalyst module can be reduced. In regeneration mode, the fan is turned off and the ionization module is turned on. Under the action of ionization, the chemical substances adsorbed on the surface of the catalyst module can be further oxidized and decomposed, achieving the effect of regenerating the catalyst material. This makes the purification performance more stable, the service life longer, and maintains a better deodorization effect, making it suitable for refrigeration equipment such as refrigerators.

[0018] According to some embodiments of the present invention, controlling the shutdown of the fan while keeping the ionization module on includes:

[0019] When the ionization module is turned on, its operating time is controlled to be 0.5h-2h.

[0020] According to some embodiments of the present invention, the method further includes:

[0021] When the cumulative running time of the purification mode reaches a preset time and the purification mode ends, the regeneration mode is activated.

[0022] A control device according to a third aspect of the present invention includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the purification control method as described in the second aspect of the present invention.

[0023] A refrigeration device according to a fourth aspect embodiment of the present invention includes an air purification device as described in the first aspect embodiment or a control device as described in the third aspect embodiment.

[0024] According to a fifth aspect embodiment of the present invention, a computer-readable storage medium stores computer-executable instructions for performing the purification control method described in the second aspect embodiment above.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0027] Figure 1 This is a schematic diagram of one embodiment of the air purification device of the present invention;

[0028] Figure 2 for Figure 1 The image shown is a 3D view of the air purification device with the fan omitted.

[0029] Figure 3 for Figure 1 A schematic diagram of one embodiment of the second electrode is shown;

[0030] Figure 4 for Figure 1 A schematic diagram of another embodiment of the second electrode is shown;

[0031] Figure 5 for Figure 1 A schematic diagram of another embodiment of the second electrode is shown;

[0032] Figure 6 This is a schematic diagram of another embodiment of the air purification device of the present invention;

[0033] Figure 7 This is a flowchart of a purification control method according to an embodiment of the present invention;

[0034] Figure 8 This is a flowchart of a purification control method according to another embodiment of the present invention;

[0035] Figure 9 This is a flowchart of a purification control method according to another embodiment of the present invention.

[0036] Figure label:

[0037] 101. Catalyst module; 102. Fan; 103. Second electrode; 104. Ionization zone; 105. Separator; 106. Guide plate; 107. First air inlet; 108. Air outlet; 109. Baffle;

[0038] 301, Insulating layer; 302, Conductive layer;

[0039] 401. Tip;

[0040] 601. Second air inlet. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0045] refer to Figures 1 to 6 The air purification device described in this invention is applicable to refrigeration equipment such as refrigerators and freezers, and can also be applied to storage equipment such as lockers. The air purification device is described below with specific examples.

[0046] Reference Figure 1 As shown, the air purification device provided in this embodiment of the invention includes a frame, two catalyst modules 101, an ionization module, and a fan 102. Both catalyst modules 101 and the ionization module are mounted on the frame. The ionization module includes a first electrode and a second electrode 103. Each of the two catalyst modules 101 serves as an electrode, i.e., both catalyst modules 101 act as the first electrode. The second electrode 103 is located between the two catalyst modules 101, spaced apart from them. The two catalyst modules 101 are respectively distributed on both sides of the second electrode 103, each forming a discharge region with the second electrode 103. This discharge region is the ionization region 104.

[0047] Figure 1In the embodiment shown, the catalyst module 101 has conductive properties, so that the catalyst module 101 itself serves as the first electrode. In this way, only the second electrode 103 needs to be laid out, and there is no need to set up the first electrode separately, which can reduce the number of electrodes and wind resistance.

[0048] It is understood that the catalyst module 101 includes a support, and an electrocatalytic material (not shown in the attached figure) is disposed on the surface of the support. The support is made of a ventilable material, and a ventilation structure can also be provided on the support, such as opening through holes for ventilation, so that air can enter the ionization region 104. Electrocatalysis can be generated through the electrocatalytic material, which is beneficial to improving the degradation effect and making the deodorization efficiency higher.

[0049] Specifically, the catalyst module 101 includes a frame (not shown in the figure), which is made of a metallic material and has conductive properties. The frame is square in shape, and the carrier is fixed inside the frame. The carrier itself can also be conductive. After the carrier and the frame are fixed, they are electrically connected, forming an electrode structure, i.e., the first electrode. Alternatively, the electrocatalytic material can be conductive. When the carrier and the frame are fixedly connected, the electrocatalytic material and the frame are electrically connected. In this way, the electrocatalytic material on the surface of the frame and the carrier forms the first electrode, thus integrating the first electrode with the catalyst module 101 into a single structure, eliminating the need for a separate first electrode and simplifying the structure of the ionization module.

[0050] It should be noted that the support, as the framework structure for supporting the catalytic material, can ensure the uniform dispersion of the catalytic material and improve structural strength. In this embodiment, the support can be made of a porous and breathable material, allowing air to enter the ionization region 104 through the support and then flow out through the support from the ionization region 104.

[0051] Understandably, the surface of the carrier has a grid structure, which can be formed by uniformly distributed concave surfaces on the carrier surface. The grid structure can be located on the side of the carrier facing the second electrode 103, or it can be located on both sides of the carrier. The grid structure increases the surface area of ​​the carrier, allowing more catalytic material to be covered, which is beneficial for improving the catalytic effect.

[0052] It should be noted that the electrocatalytic materials used in the embodiments include oxides such as manganese oxide, copper oxide, and cerium oxide, as well as one or more of precious metals such as silver, gold, and platinum. The carrier can be a honeycomb substrate made of materials with adsorption properties such as alumina, silicates, activated carbon, and molecular sieves, or it can be a metal substrate such as honeycomb aluminum or foamed nickel.

[0053] It should be noted that the first electrode can also be disposed separately on the catalyst module 101. For example, a layer of metal can be added to the outside of the catalyst module 101 as the first electrode, and the catalyst module 101 is between the first electrode and the second electrode 103.

[0054] The ionization module utilizes the first and second electrodes 103 in conjunction to perform high-voltage discharge in the ionization region 104. Under the action of high-voltage discharge, odor gas molecules are in a state of ionization, dissociation, and excitation, which can form plasma. The energy required for molecular reactions in these states is reduced. At the same time, the plasma promotes the decomposition and electrolysis of organic matter (odor molecules) in the air, thus making odor gases easier to degrade and improving odor removal efficiency. It can also effectively reduce the non-degradable components adsorbed on the surface of the catalyst module 101, which is beneficial to improving the performance stability of the catalyst module 101.

[0055] Figure 1 The diagram shown is a cross-sectional view of the air purification device of the embodiment. The catalyst module 101, the second electrode 103 and the catalyst module 101 are arranged from top to bottom in that order. The fan 102 is installed on one side of the frame.

[0056] It should be noted that the air purification device can also be installed in the air duct of the refrigerator. The fan 102 in the air duct can be used to blow air into the air purification device. In this case, the air purification device does not need to be equipped with the fan 102, which can simplify the structure and save costs.

[0057] Reference Figure 1 and Figure 2 As shown, it can be understood that the fan 102 is located on the left side of the frame. After the fan 102 is started, it drives the airflow, causing the air to flow from the right side of the frame to the left. When the air passes through the ionization region 104, it mainly flows in a direction parallel to the catalyst module 101, that is... Figure 1 The left and right directions shown ensure that all air passes through the discharge area, resulting in more complete ionization and thus improving the purification effect per cycle.

[0058] Understandably, in related technologies, the ionization scheme involves air passing vertically through the catalyst module 101 and maintaining its original direction until it passes through the discharge region. That is, air flows directly out of the holes in the catalyst module 101, with relatively little air passing between the electrodes and the physical structure of the catalyst module 101. The discharge between the two electrodes mainly relies on the interaction between the physical entities; in other words, the strongest ionization occurs between the electrode entities and at the electrode edges, while ionization does not occur in the areas where the electrodes are hollowed out. Therefore, the technical solution used in the previous related technologies resulted in poor ionization performance. However, the improved embodiment of this invention ensures that when air passes through the ionization region 104, it mainly flows in a direction parallel to the catalyst module 101, meaning that the air passes between the electrode entities and at the electrode edges in the flow direction, thus improving the purification effect per pass.

[0059] Reference Figure 1 and Figure 2 As shown, the frame includes a partition 105 connected to the catalyst module 101, thereby dividing the catalyst module 101 into left and right parts. The frame also includes two baffles 109, which are respectively disposed on the left and right sides of the catalyst module 101. One end of each baffle 109 is connected to the side of one catalyst module 101, and the other end is connected to the side of the other catalyst module 101, so that the two baffles 109 and the two catalyst modules 101 are interconnected to form a closed-loop space, and the second electrode 103 is located in this space.

[0060] Reference Figure 1 As shown, it can be understood that air passes through the catalyst module 101 from the right side of the partition 105, undergoes the first catalytic reaction, and then enters the ionization zone 104, where pollutants and oxidizing substances are ionized. The gas to be treated flows from left to right, passing through most of the discharge area, thus improving the single-pass removal efficiency. The ionized gas exits the catalyst module 101 from the left side of the partition 105 and undergoes another catalytic reaction. The pollutant components and oxidizing components that have not been completely decomposed react further on the surface of the catalyst module 101, further enhancing the purification effect.

[0061] It should be noted that in some other embodiments, only one catalyst module 101 may be used. In this case, the baffle 109 can be configured as a semi-enclosed structure, for example, in a U-shape. The catalyst module 101 is disposed at the opening of the semi-enclosed structure, forming a closed-loop space, and the second electrode 103 is located within this space. Figure 1 and Figure 2 In the embodiment shown, a catalyst module 101 is provided on each of the upper and lower sides of the second electrode 103. The advantage is that the symmetrical structure is designed to make full use of the electrode surface for ionization and improve the utilization rate of the electrode.

[0062] Reference Figure 1 and Figure 2 As shown, the frame also includes a guide plate 106 connected to the partition 105, and the guide plate 106 is located at one end of the partition 105 opposite to the catalyst module 101, i.e., the catalyst module 101 and the guide plate 106 are located at opposite ends of the partition 105. On the right side of the partition 105, the catalyst module 101 and the guide plate 106 define a vent, which is defined as a first air inlet 107. On the left side of the partition 105, the catalyst module 101 and the guide plate 106 define a vent, which is defined as an air outlet 108.

[0063] By defining the first air inlet 107 and the air outlet 108, air enters the first air inlet 107 from the right side of the air purifier, flows horizontally, then vertically through the catalyst module 101, flows horizontally within the ionization zone 104, then vertically through the catalyst module 101 again, and finally flows horizontally out of the air outlet 108. The air outlet 108 and the first air inlet 107 are located on the left and right sides of the frame, respectively, with the air outlet 108 facing the fan 102. By setting the guide plate 106, the airflow flows along a predetermined path, making the air volume more concentrated.

[0064] Reference Figure 3 As shown, the second electrode 103 includes an insulating layer 301 and a conductive layer 302, with the insulating layer 301 covering the conductive layer 302. In other words, the second electrode 103 has a coaxial structure, with an insulating outer layer and a conductive inner layer. Thus, the second electrode 103 forms a dielectric barrier discharge (DBD), which suppresses sparks generated during discharge, resulting in a more uniform discharge across the entire electrode. The insulating layer 301 can be made of quartz or ceramic. In this case, the power supply for both the first and second electrodes 103 is AC high voltage or pulse.

[0065] Dielectric barrier discharge is typically driven by a sinusoidal AC high-voltage power supply. As the supplied voltage increases, the state of the reactant gas in the system undergoes three stages of change: from an insulating state to discharge and finally breakdown. When the supplied voltage is relatively low, although some gas undergoes ionization and diffusion, the amount is too small and the current is too low to induce a plasma reaction in the reaction zone; at this point, the current is zero. As the supplied voltage gradually increases, the number of electrons in the reaction zone also increases. However, before reaching the breakdown voltage of the reactant gas, the electric field between the two electrodes is too low to provide sufficient energy for the electrons to undergo inelastic collisions with the gas molecules. The lack of inelastic collisions results in a limited increase in the number of electrons; therefore, the reactant gas remains in an insulating state and cannot produce a discharge. At this point, the current increases slightly with the voltage applied to the electrodes, but remains almost zero. If the supply voltage is increased further, when the electric field between the two electrodes is large enough to cause gas molecules to undergo inelastic collisions, the gas will increase significantly due to ionization from these inelastic collisions. When the electron density in the space is higher than a critical value and the Paschen breakdown voltage is reached, many micro-discharge filaments will be generated and conduct between the two electrodes. At the same time, the phenomenon of light emission can be clearly observed in the system. At this time, the current will increase rapidly as the applied voltage increases.

[0066] Reference Figure 4 As shown, it can be understood that the second electrode 103 can also be configured to have multiple pointed tips 401 on the side facing the catalyst module 101. It can be understood that a strong electric field is generated between the first electrode and the second electrode 103 in the ionization region 104. Under the action of this strong electric field, tip discharge can occur at the pointed tips 401 of the second electrode 103, thereby improving ionization efficiency and making the electrocatalytic effect more efficient. The pointed tips 401 on both sides of the second electrode 103 are staggered. Of course, referring to... Figure 5 As shown, in some other embodiments, the tips 401 on both sides of the second electrode 103 can also be symmetrically arranged. In this case, the second electrode 103 and the first electrode are also subjected to corona discharge, and the power supply is a DC high voltage or pulse.

[0067] The tip 401 can be a filamentous, serrated, needle-like, or spiral structure. In a specific example, a filamentous tip 401 can be understood as a long, thin metal wire, with multiple wires distributed on the surface of the second electrode 103. A serrated tip 401 can be a protrusion with a serrated cross-section on the surface of the second electrode 103, where a tip discharge can be generated. Similarly, the protrusion on the surface of the second electrode 103 can also be needle-like or spiral, thus forming a needle-like or spiral tip 401.

[0068] Reference Figure 6As shown, it can be understood that the right side of the two catalyst modules 101 defines a second air inlet 601, and the left sides of the two catalyst modules 101 are connected by a baffle 109, that is, the two ends of the baffle 109 are respectively connected to the two catalyst modules 101. Air can directly enter the ionization region 104 from the second air inlet 601 in the left-right direction. The baffle 109 blocks the airflow, thereby changing the direction of the airflow, so that the airflow passes through the catalyst module 101 in the up-down direction.

[0069] It should be noted that it can also be configured to close the first air inlet 107 and the second air inlet 601 at the top and the air outlet 108 at the bottom, so that the airflow enters from the first air inlet 107 at the bottom, passes through the catalyst module 101 on the lower side of the second electrode 103 and enters the ionization region 104, then passes through the catalyst module 101 on the upper side of the second electrode 103 and flows out from the air outlet 108 at the top. This also allows the airflow to flow in a direction parallel to the catalyst module 101 and flow out through the catalyst module 101.

[0070] Understandably, the frame's partition 105, air guide plate, and baffle 109 collectively define the ventilation channel, which allows airflow to follow a predetermined path and flow parallel to the catalyst module 101. This increases the effective area of ​​the airflow passing through the ionization zone 104, improving the purification effect per cycle. Furthermore, after passing through the ionization zone 104, the airflow exits through the catalyst module 101, allowing the ionized pollutants and oxidizing substances to further react on the surface of the catalyst module 101, increasing the pollutant removal rate and reducing the concentration of oxidizing substances circulating into the air. Additionally, the ionized gas exiting through the catalyst module 101 removes ozone that may have been generated during ionization, and the reaction of ozone with odor molecules on the surface of the catalyst module 101 further enhances the purification effect.

[0071] The following uses a refrigerator as an example to illustrate the refrigeration equipment of this invention. During long-term use, the meat, seafood, fruits, and vegetables stored inside a refrigerator will release different odors. Because the refrigerator is well-sealed and has little airflow with the outside, the odors accumulate inside over a long period of time. When the user opens the door, they will smell an odor, and it will also cause the food inside to have mixed flavors, affecting the taste.

[0072] The refrigerator (not shown in the figure) of this embodiment includes a shell and a high-voltage power module. A freezer compartment and a refrigerator compartment are formed inside the shell. The air purification device of this embodiment is connected to the shell and located in either the freezer compartment or the refrigerator compartment. The frame of the air purification device is fixed inside the refrigerator. The high-voltage power module is connected to the first electrode and the second electrode 103. The gas inside the refrigerator flows through the air purification device. On the one hand, plasma is used to decompose and electrolyze organic matter (odor molecules) in the air. On the other hand, the catalyst module 101 is used to enhance the degradation effect, making the odor removal efficiency higher. Since the refrigerator of this embodiment is equipped with the air purification device of this embodiment, it has all the beneficial effects of the air purification device embodiments described above, which will not be repeated here.

[0073] refer to Figures 7 to 9 The present invention describes a purification control method applicable to the air purification device shown in the above embodiments. The specific structure of the air purification device can be found in [reference needed]. Figures 1 to 6 The embodiments shown will not be described in detail here. The purification control method will be explained below with specific examples.

[0074] See Figure 7 As shown, in some embodiments, the purification control method includes, but is not limited to, the following steps:

[0075] Step S710: In purification mode, turn on the ionization module and the fan;

[0076] In step S720, during regeneration mode, the fan is shut down while the ionization module remains on.

[0077] It is understandable that the above method is explained using a refrigerator as an example. The air purifier is installed inside the refrigerator. When it is necessary to remove odors from the inside of the refrigerator, an activation command can be sent to the air purifier through a mobile application or the refrigerator's on-screen application. After receiving the command, the air purifier starts working and uses a fan to send the air inside the refrigerator into the ionization zone for purification. At this time, both the fan and the ionization module are turned on and running, which can be understood as the purification mode of the air purifier.

[0078] In some embodiments, the concentration of odorous gases in the air is acquired, and when the concentration exceeds a preset value, the purification mode is activated. It is understood that a gas sensor for detecting the concentration of odorous gases, such as hydrogen sulfide and methylamine, can be installed inside the refrigerator. This gas concentration sensor acquires real-time information about the air quality inside the refrigerator. When the odorous gas concentration exceeds the preset value, a control signal is generated and sent to the air purifier, thereby activating the fan and ionization module to achieve automatic air purification. It should be noted that a control device can receive the control signal and output control to the air purifier; this control device can be located within the refrigerator or the air purifier itself.

[0079] It should be noted that, as Figure 1 In the schematic diagram of the air purification device shown, the fan drives the air through the ionization zone. Under the action of high-voltage discharge, odor gas molecules are in a state of ionization, dissociation, and excitation, making the odor gases easier to degrade and improving odor removal efficiency. After passing through the ionization zone, the air passes through the catalyst module. The residual ozone generated by the high-voltage discharge enters the catalyst module, which can decompose the ozone into active oxygen and oxygen, effectively reducing the risk of secondary pollution and achieving highly efficient air purification.

[0080] Considering that during prolonged use of air purifiers, some non-degradable gas molecules and other substances may adsorb onto the surface of the catalyst module, and this accumulation over time can lead to a decline in the catalyst module's performance, the control method in this embodiment controls the air purifier to execute the aforementioned step S720 to further decompose the residual substances adsorbed on the surface of the catalyst module, achieving the effect of regenerating the catalyst material. This can also be understood as a regeneration mode relative to the purification mode.

[0081] Specifically, in this embodiment, the preset time can be set to 100 hours, that is, the air purifier will run in regeneration mode after the accumulated running time reaches 100 hours. Of course, the preset time can be set according to the actual usage scenario requirements. For example, the preset time can be 80 hours, 150 hours, 200 hours, etc.

[0082] Considering that the point at which the accumulated running time reaches the preset time happens to be during the purification mode, the regeneration mode needs to be controlled to run only after the purification mode ends. Specifically, the fan is turned off first, and then the ionization module is run. In other words, in the regeneration mode, ionization is used for decomposition.

[0083] See Figure 8 As shown, in some other embodiments, the purification control method includes, but is not limited to, the following steps:

[0084] Step S711: In purification mode, turn on the ionization module and the fan;

[0085] Step S721: When the cumulative running time of the purification mode reaches 100h and the purification mode ends, control the fan to be turned off and the ionization module to be turned on to run for 0.5h-2h.

[0086] In regeneration mode, the operating time of the ionization module can be set according to the actual application scenario. For example, the ionization module can be set to run for 0.5 hours, 1 hour, 2 hours, etc. It can be understood that electrocatalysis has a catalytic decomposition effect. When the fan is shut down, the operation of the ionization module can promote the further degradation and desorption of residual substances adsorbed on the surface of the catalyst module, releasing the activity of the electrocatalytic material on the carrier surface, thus achieving a regeneration effect. Comparative tests show that after treatment in regeneration mode, the performance of the catalyst module can be restored to 90%-95% of its initial efficiency, demonstrating a significant regeneration effect.

[0087] See Figure 9 The regeneration mode is illustrated with a specific example. Figure 9 The flowchart shown illustrates the regeneration mode. It can be understood that when the air purifier's cumulative operating time has not reached 100 hours, it operates according to normal control logic. This means users can control the air purifier to turn on or off via their mobile phones, refrigerator screens, etc., as needed. When the cumulative operating time reaches 100 hours, it needs to determine if the air purifier is in purification mode. If so, it needs to wait until the purification mode ends before activating regeneration mode; otherwise, it activates regeneration mode directly. In regeneration mode, the fan is first stopped, then the ionization module is activated and runs for 0.5-2 hours. After regeneration, the catalyst module's performance can be effectively restored to an optimal level, resulting in a longer service life and maintaining excellent odor removal.

[0088] Embodiments of the present invention also provide a control device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor and the memory can be connected via a bus or other means.

[0089] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0090] The non-transient software program and instructions required to implement the purification control method of the above embodiments are stored in memory. When executed by a processor, the purification control method in the above embodiments is executed, for example, the method described above is executed. Figure 7 Method steps S710 to S720 in the text Figure 8Method steps S711 to S721.

[0091] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0092] Furthermore, embodiments of the present invention also provide a refrigeration device, including the control device as described in the above embodiments. Since the refrigeration device employs all the technical solutions of the control device described in the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0093] Furthermore, one embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions that are executed by a processor or controller, for example, by a processor in the above-described refrigeration device embodiment, causing the processor to execute the purification control method of the refrigeration device in the above-described embodiment, for example, performing the above-described... Figure 7 Method steps S710 to S720 in the text Figure 8 Method steps S711 to S721.

[0094] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0095] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An air purification device, characterized by, The air purification device comprises a frame, a catalyst module, an ionization module and a fan, the catalyst module and the ionization module are arranged in the frame, the catalyst module comprises a ventilable carrier, and the carrier is provided with an electrocatalytic material; the ionization module comprises a first electrode and a second electrode, the first electrode is arranged in the catalyst module or the catalyst module is configured as the first electrode, and the second electrode is arranged in the catalyst module; the first electrode and the second electrode form an ionization area; wherein the frame is provided with a ventilation flow channel, the ventilation flow channel is configured to, in the ionization area, at least one section of the flow channel makes the airflow flow in the direction parallel to the catalyst module, and the airflow flows out of the catalyst module; the frame comprises a partition plate connected to the catalyst module, the partition plate is located on the side of the catalyst module away from the second electrode, the airflow passes through the catalyst module from one side of the partition plate into the ionization area, and flows out of the catalyst module from the other side of the partition plate. The frame comprises a guide plate connected to the partition plate, the guide plate is located on the side of the partition plate away from the catalyst module, and the guide plate and the catalyst module define a first air inlet and an air outlet. The air purification device comprises two catalyst modules, the ionization module comprises two first electrodes, and the second electrode is located between the two catalyst modules. One side of the two catalyst modules defines a second air inlet, and the other side of the two catalyst modules is provided with a baffle, and the two ends of the baffle are connected to the two catalyst modules respectively. The side of the second electrode facing the catalyst module is provided with a plurality of sharp parts for generating sharp discharge, and the sharp parts are arranged on the surface of the second electrode.

2. The air purification device of claim 1, wherein, The second electrode comprises an insulating layer and a conductive layer, and the insulating layer covers the conductive layer.

3. The air purification device of claim 1, wherein, When the catalyst module is configured as the first electrode, the catalyst module comprises an electrically conductive frame, the carrier is fixed in the frame, the carrier or the electrocatalytic material is made of an electrically conductive material and is electrically connected with the frame.

4. The air purification device of claim 3, wherein, The air purification device comprises a frame, a catalyst module, an ionization module and a fan, the catalyst module and the ionization module are arranged in the frame, the catalyst module comprises a ventilable carrier, and the carrier is provided with an electrocatalytic material; the ionization module comprises a first electrode and a second electrode, the first electrode is arranged in the catalyst module or the catalyst module is configured as the first electrode, and the second electrode is arranged in the catalyst module; the first electrode and the second electrode form an ionization area; wherein the frame is provided with a ventilation flow channel, the ventilation flow channel is configured to, in the ionization area, at least one section of the flow channel makes the airflow flow in the direction parallel to the catalyst module, and the airflow flows out of the catalyst module, the method comprises:

5. The air purification device of claim 1, wherein, When the purification mode is started, the ionization module and the fan are started; 6. The air purification device of claim 1, wherein, When the regeneration mode is started, the fan is controlled to be closed, and the ionization module is kept on.

7. The air purification device of claim 1, wherein, The control to close the fan and keep the ionization module on comprises:

8. A purification control method for an air purification device, characterized by, ​ ​ ​ 9. The decontamination control method according to claim 8, characterized by, ​ When the ionization module is turned on, the operation time of the ionization module is controlled to be 0.5h-2h.

10. The decontamination control method according to claim 8, characterized by, The method further comprises: When the operation time accumulation of the purification mode reaches a preset time, and the purification mode ends, the regeneration mode is turned on.

11. Control device, characterized in that A computer program product comprising a memory, a processor, and computer program stored on the memory and executable on the processor, wherein the processor implements the purification control method according to any one of claims 8-10 when executing the computer program.

12. A refrigeration appliance characterised in that, An air purification device according to any one of claims 1-7 or a control device according to claim 11.

13. A computer-readable storage medium storing computer-executable instructions, wherein execution of the computer-executable instructions by one or more processors of a computing system causes the one or more processors to perform operations comprising: The computer executable instructions are used to execute the purification control method according to any one of claims 8-10.

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