Negative ion generating device and air purifier

Abstract

The utility model relates to a negative ion generating device and an air purifier. The negative ion generating device comprises an air outlet shell which is provided with an air outlet channel; the negative ion emitter communicates with the air outlet channel and is used for emitting negative ions to the air outlet channel; and the water mist sprayer is communicated with the air outlet channel and is used for spraying water mist on the emission path of the negative ions. According to the negative ion generating device, the water mist is sprayed through the water mist sprayer, the humidity near the negative ion emitter can be increased, more water molecules are obtained, the combination efficiency of negative ions and water is improved, the concentration of negative oxygen water ions is improved, and therefore the negative ions in the air can survive for a long time and can move to farther places along with air flow; in addition, high-concentration negative ions can also exist at the position far away from the air outlet end of the air outlet shell, and therefore the negative ion propagation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of negative ion technology, and in particular to a negative ion generating device and an air purifier. Background Technology

[0002] Negative ions can cause particulate matter in the air to settle, and they also have the kinetic energy to sterilize and disinfect. In addition, they have a positive impact on human health, mainly in that they can enhance the body's ability to synthesize and store vitamins. Therefore, negative ions are also known as "air vitamins".

[0003] Most air purifiers on the market now come with negative ion functionality. However, negative ions, being easily eliminated, have very high environmental requirements. Generally, in a windless state, the concentration of negative ions is undetectable 3 meters away from the emitter. In a windy state, the concentration at 1 meter is only about 10% higher than at the air outlet, and at 3 meters, it is only 1%. Therefore, improving the negative ion transmission efficiency of air purifiers is a major problem for existing air purifiers. Utility Model Content

[0004] Therefore, it is necessary to provide a negative ion generator and an air purifier to address the problem of low negative ion propagation efficiency in existing air purifiers.

[0005] This application provides a negative ion generating device, comprising:

[0006] The air outlet housing has an air outlet channel;

[0007] A negative ion emitter, connected to the air outlet channel, is used to emit negative ions into the air outlet channel; and

[0008] A water mist sprayer is connected to the air outlet duct and is used to spray water mist along the emission path of negative ions.

[0009] The aforementioned negative ion generator sprays water mist through a water mist sprayer, which increases the humidity near the negative ion emitter, thereby increasing the number of water molecules, enhancing the efficiency of negative ion binding with water, and increasing the concentration of negative oxygen water ions. This allows negative ions to survive in the air for a long time, and with the airflow, they can move to farther places. Even at a distance from the air outlet of the air outlet housing, there can be a high concentration of negative ions, thus improving the negative ion propagation efficiency.

[0010] In one embodiment, the negative ion generator further includes a grounding element disposed on the emission path of the negative ions to enhance the electric field strength at the emitting end of the negative ion emitter.

[0011] When the grounding element is placed in the emission path of negative ions, the grounding element, acting as a counter electrode, forms an asymmetrical electric field distribution with the tip. Because the emitting end of the negative ion emitter carries a negative high voltage, the electric field lines are highly concentrated on the surface of the emitting end, resulting in a high electric field strength. Therefore, more electrons can be ionized and combine with water and oxygen molecules to form negative ions. In the negative ion generating device of this embodiment, the presence of a water mist sprayer increases the humidity near the negative ion emitter, leading to more water molecules. Simultaneously, the grounding element increases the electric field strength at the emitting end of the negative ion emitter, generating even more negative ions. Thus, with an increase in both negative ions and water molecules, the combination of negative ions and water is easier and more efficient, further increasing the concentration of negative oxygen water ions. This allows negative ions to survive longer in the air and travel further, resulting in higher propagation efficiency.

[0012] In one embodiment, the water mist sprayer is positioned on the negative ion emission path between the negative ion emitter and the grounding element; or

[0013] Water mist sprayers are used to spray water mist onto grounding components.

[0014] When a water mist sprayer is positioned along the emission path of negative ions between the negative ion emitter and the grounding component, the grounding component's location on the emission path ensures an increase in the electric field strength at the emitter's end. The water mist sprayer's proximity to the emitter further enhances humidity and water molecule concentration near the emitter, allowing negative ions to combine with water molecules immediately, minimizing loss during transit and increasing the concentration of negative oxygen ions. When the water mist sprayer targets the grounding component, water droplets adhere to it. Consequently, as negative ions pass through the grounding component, they combine with water molecules on the component to form negative oxygen ions, further increasing the concentration of negative oxygen ions.

[0015] In one embodiment, the negative ion emitter includes a tip corona discharge type negative ion emitter, which is connected to the air outlet channel.

[0016] The tip corona discharge negative ion emitter primarily uses a high-voltage electric field to induce corona discharge at the electrode tip, ionizing air molecules to generate negative ions. It offers advantages such as high-efficiency purification, low cost, long lifespan, and high safety. When a grounding component is placed in the emission path of the negative ions, it can reliably combine with a water mist sprayer to form negative oxygen water ions.

[0017] In one embodiment, the negative ion emitter includes a brush-type negative ion emitter connected to an air outlet duct.

[0018] The carbon brush negative ion emitter is a type of tip corona discharge negative ion emitter. It uses carbon fiber or carbon material as the emission tip, leveraging carbon's high conductivity and oxidation resistance to achieve stable discharge. The carbon brush negative ion emitter is highly corrosion-resistant, has a long lifespan, and is suitable for applications requiring long-term operation. When used in conjunction with the water mist sprayer described in this application, it can provide a long-term supply of high-concentration negative oxygen water ions, and in the case of airflow, it can deliver the ions to locations further from the air outlet, thus increasing the coverage area of ​​the negative ion emitter.

[0019] In one embodiment, the grounding element includes a grounding grid disposed in the emission path of the negative ions.

[0020] The grounding grid is a grounding component with multiple mesh openings. Since the grounding component is located downstream of the water mist sprayer along the emission path of negative ions, the mesh openings of the grounding component reduce the impact on the airflow towards the air outlet, and thus reduce the impact on the discharge of negative oxygen water ions towards the air outlet.

[0021] In one embodiment, the grounding grid has multiple mesh openings, which may be square or honeycomb-shaped.

[0022] Because square mesh openings are large, the airflow area is large. Therefore, when multiple square meshes are distributed on the grounding component, the meshes are neatly arranged and closely spaced, increasing the overall airflow area of ​​the grounding component and allowing negative oxygen water ions to be discharged more smoothly to the air outlet. When all the meshes are honeycomb-shaped, the meshes are also closely spaced and the openings are large, thus increasing the overall airflow area of ​​the grounding component and allowing negative oxygen water ions to be discharged more smoothly to the air outlet.

[0023] In one embodiment, the grounding grid is vertically disposed in the air outlet channel in a direction perpendicular to the air outlet channel.

[0024] When the grounding component is vertically installed in the air outlet channel in a direction perpendicular to the air outlet channel, multiple mesh holes can be directed towards the air outlet direction, further reducing the obstruction of airflow by the grounding component and allowing negative oxygen water ions to be discharged more smoothly to the air outlet.

[0025] In one embodiment, there is a preset distance between the grounding element and the negative ion emitter, and the preset distance is no more than 20 centimeters.

[0026] Research has found that when the distance between the grounding component and the negative ion emitter is too large, the potential effect of the electric field strength is not significant. Therefore, this application sets the preset distance between the grounding component and the negative ion emitter to no more than 20 centimeters, which can improve the reliability of the electric field strength at the emitting end of the negative ion emitter.

[0027] In one embodiment, the negative ion generator further includes a controller that is communicatively connected to the water mist sprayer. The controller is used to control the water mist sprayer to adjust the amount or direction of the sprayed water mist.

[0028] In one embodiment, the water mist sprayer has a nozzle for spraying water mist, which is located on the inner wall of the air outlet duct.

[0029] In this way, the dispersion area of ​​the sprayed water mist can be increased without occupying the internal space of the air outlet channel, so that the water mist sprayer sprays more comprehensively along the emission path of negative ions, which is more conducive to the combination of negative ions with multiple water molecules and increases the concentration of negative oxygen water ions.

[0030] In one embodiment, the negative ion generator further includes an air outlet device connected to an air outlet channel for providing airflow to the air outlet channel.

[0031] In this way, after negative oxygen water ions are generated in the air outlet channel, they can be discharged to the air outlet under the action of the airflow provided by the air outlet device, so as to move to a farther place.

[0032] In one embodiment, the air outlet is located on the side of the negative ion emitter facing away from the water mist sprayer, and the negative ion generator also includes a mounting part located in the air outlet channel. The mounting part is used to install the negative ion emitter, and the mounting part has a through flow hole.

[0033] Thus, due to the installation part, on the one hand, it provides a mounting base for the negative ion emitter, and on the other hand, the airflow generated by the air outlet device in the air outlet channel can be discharged to the air outlet through the flow hole of the installation part. The installation part does not block the airflow, allowing the negative oxygen water ions to be transmitted further.

[0034] This application also provides an air purifier, including the negative ion generating device in any of the above embodiments.

[0035] The air purifier described above sprays water mist through a water mist injector, which increases the humidity near the negative ion emitter. This results in more water molecules, enhancing the efficiency of negative ions combining with water and increasing the concentration of negative oxygen water ions. This allows negative ions to survive in the air for a long time, and with the airflow, they can move to farther places. Even at a distance from the air outlet of the air outlet housing, a high concentration of negative ions can still exist, thus improving the efficiency of negative ion propagation. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a negative ion generating device in one or more embodiments of this application.

[0037] Figure 2 This is a schematic diagram of the principle of a negative ion generating device in one or more embodiments of this application.

[0038] Figure 3 This is a cross-sectional structural diagram of a portion of the negative ion generator in one or more embodiments of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] Negative ion generator 100, air outlet housing 10, air outlet channel 11, air outlet 12, negative ion emitter 20, water mist sprayer 30, spray nozzle 31, air outlet device 35, mounting part 38, flow hole 381, grounding part 40, mesh 41. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] As mentioned in the background section, improving the negative ion transmission efficiency of air purifiers is a major problem for existing air purifiers.

[0048] The applicant discovered in the research that negative ions are inherently unstable and have a short lifespan. Positive ions in the air can significantly affect the concentration of negative ions. Only when the concentration of negative ions in the air is greater than or equal to the concentration of positive ions can people feel comfortable.

[0049] If the concentration of negative ions is increased by simply increasing the number of negative ion emitters, the concentration at the air outlet can only be increased, which is far less than the exponential decay due to distance. If the discharge voltage of the negative ion emitters is increased in one direction, the concentration of negative ions can only be increased by about 1 time. Similarly, it can only affect the concentration of negative ions at the air outlet and cannot allow them to diffuse stably to an area of ​​1 meter or even 3 meters away.

[0050] Therefore, the applicant further discovered a significant positive correlation between indoor relative humidity and negative ion concentration. This is because the generation principle of negative ions involves converting the low voltage of the indoor power supply into a DC negative high voltage through a pulse and oscillating electrical appliance. The output negative high voltage is then connected to a corona wire, causing a discharge phenomenon that ionizes the surrounding air and releases a large number of free electrons. These free electrons combine with oxygen and water molecules in a very short time to form negative ions. When indoor humidity is higher, there are more water molecules, which, after combining with negative ions, can form negative oxygen water ions. These negative ions are more stable and can survive in the air for a long time, thus increasing the concentration of negative ions.

[0051] Therefore, this application proposes a negative ion generating device that can spray water mist through a water mist sprayer along the negative ion emission path of the negative ion emitter to increase the humidity near the negative ion emitter, thereby increasing the number of water molecules, enhancing the binding efficiency of negative ions and water, and increasing the concentration of negative oxygen water ions. This allows negative ions to survive in the air for a long time, and with the airflow, they can move to farther places. Even in places far from the air outlet, there can be a high concentration of negative ions, thus improving the propagation efficiency of negative ions.

[0052] Figure 1 This is a schematic diagram of the structure of a negative ion generating device in one or more embodiments of this application.

[0053] See Figure 1 An embodiment of this application provides a negative ion generator 100, which includes an air outlet housing 10, a negative ion emitter 20, and a water mist sprayer 30. The negative ion generator 100 of this application can be applied to air purifiers or other devices suitable for negative ion generator 100, such as air conditioners or fresh air systems.

[0054] Specifically, the air outlet housing 10 has an air outlet channel 11, the negative ion emitter 20 is connected to the air outlet channel 11 and is used to emit negative ions into the air outlet channel 11, and the water mist sprayer 30 is connected to the air outlet channel 11 and is used to spray water mist in the emission path of negative ions.

[0055] In this way, by spraying water mist through the water mist sprayer 30, the humidity near the negative ion emitter 20 can be increased, which in turn increases the number of water molecules, enhances the efficiency of negative ions combining with water, and increases the concentration of negative oxygen water ions. This allows negative ions to survive in the air for a long time, and with the airflow, they can move to a farther place. Even in places far from the air outlet of the air outlet housing 10, there can be a high concentration of negative ions, thus improving the efficiency of negative ion propagation.

[0056] Figure 2This is a schematic diagram of the negative ion generating device in one or more embodiments of this application; combined with Figure 2 To facilitate understanding of this application, the following explanation of the formation of negative oxygen water ions is provided:

[0057] Taking the negative ion emitter 20 as an example of a tip corona discharge type negative ion emitter, this device generates negative ions by ionizing air molecules through a high-voltage electric field. The high-voltage circuit inside the generator is connected to the tip electrode, creating an extremely strong local electric field at the tip. Under the influence of this strong electric field, free electrons near the electrode tip are humidified, gaining sufficient kinetic energy to collide with air molecules. The molecules are ionized into positive ions and secondary electrons, forming a plasma region (corona layer).

[0058]

[0059] Then, the secondary electrons rapidly react with neutral molecules (such as...) or They combine to form negative ions:

[0060] or

[0061] If there are many water molecules nearby, some negative ions will further combine with multiple water molecules to form a more stable cluster structure, which is negative oxygen water ions, for example. or .

[0062] In some embodiments, the air outlet housing 10 is tubular, and the air outlet channel 11 is a tubular channel. The shape of the air outlet housing 10 can be cuboid or cylindrical, and there is no specific limitation.

[0063] Both the negative ion emitter 20 and the water mist sprayer 30 are mounted on the air outlet housing 10. Specifically, the negative ion emitter 20 is installed inside the air outlet channel 11, specifically in the middle of the air outlet channel 11. The water mist sprayer 30 can be directly mounted on the air outlet housing 10, with the spray nozzle 31 for spraying water mist connected to the air outlet channel 11. Alternatively, only the spray nozzle 31 of the water mist sprayer 30 can be mounted on the air outlet housing 10 and connected to the air outlet channel 11, while the main body of the water mist sprayer 30 is mounted on the outside of the air outlet housing 10. In the specific embodiment of this application, the spray nozzle 31 is located on the inner wall of the air outlet channel 11. In this way, the dispersion area of ​​the sprayed water mist can be increased without occupying the internal space of the air outlet channel 11, allowing the water mist sprayer 30 to spray more comprehensively along the emission path of negative ions, which is more conducive to the combination of negative ions with multiple water molecules and increases the concentration of negative oxygen water ions.

[0064] Please continue reading. Figure 1In some embodiments, the air outlet housing 10 has an air outlet 12 located downstream of the emission path of the negative ions from the negative ion emitter 20. The water mist sprayer 30 is connected to the air outlet channel 11 between the negative ion emitter 20 and the air outlet 12.

[0065] In order to transmit the negative oxygen water ions generated by the negative ion generator 100 further, in the embodiments of this application, the negative ion generator 100 further includes an air outlet device 35, which is connected to the air outlet channel 11 and is used to provide airflow to the air outlet channel 11.

[0066] Thus, after negative oxygen water ions are generated in the air outlet channel 11, they can be discharged to the air outlet 12 under the action of the airflow provided by the air outlet device 35, so as to move to a farther place.

[0067] Optionally, the air outlet device 35 can be a fan, such as a centrifugal fan motor or an inertial fan motor; it can also be a regular fan, etc., and there are no specific restrictions.

[0068] In some embodiments, the air outlet device 35 is located on the side of the negative ion emitter 20 facing away from the water mist sprayer 30. The negative ion generator 100 also includes a mounting portion 38 located within the air outlet channel 11. The mounting portion 38 is used to mount the negative ion emitter 20 and has a through-hole 381. Thus, due to the installation of the mounting portion 38, on the one hand, a mounting base is provided for the negative ion emitter 20; on the other hand, the airflow generated by the air outlet device 35 within the air outlet channel 11 can be discharged to the air outlet 12 through the through-hole 381 of the mounting portion 38. The mounting portion 38 does not obstruct the airflow, allowing the negative oxygen water ions to be transported further.

[0069] In the embodiments of this application, as described above, the negative ion emitter 20 may include a tip corona discharge type negative ion emitter, which is connected to the air outlet channel 11. The tip corona discharge type negative ion emitter mainly generates negative ions by inducing corona discharge at the electrode tip through a high-voltage electric field, ionizing air molecules. The tip corona discharge type negative ion emitter has advantages such as high efficiency purification, low cost, long lifespan, and high safety.

[0070] Optionally, the negative ion emitter 20 specifically includes a carbon brush negative ion emitter, which is connected to the air outlet duct 11. The carbon brush negative ion emitter is a type of tip corona discharge negative ion emitter. It uses carbon fiber or carbon material as the release tip, utilizing the high conductivity and oxidation resistance of carbon to achieve stable discharge. The carbon brush negative ion emitter has strong corrosion resistance, long lifespan, and is suitable for scenarios requiring long-term operation. When used in conjunction with the water mist sprayer 30 of this application, it can provide a high concentration of negative oxygen water ions for a long time, and in the case of air supply, it can deliver the ions to a place farther away from the air outlet 12, thereby increasing the coverage area of ​​the negative ion emitter 20.

[0071] In other embodiments, the negative ion emitter 20 can also be a metal needle-tip negative ion emitter. The metal needle-tip negative ion emitter is also a type of tip corona discharge negative ion emitter. It uses a pointed electrode made of metals such as stainless steel or tungsten, and a strong electric field is formed on the surface of the needle by applying a DC negative high voltage (usually thousands to tens of thousands of volts), ionizing air molecules to generate negative ions. The metal needle-tip negative ion emitter has the advantages of high electric field concentration and high discharge efficiency.

[0072] In embodiments of this application, the negative ion generator 100 further includes a grounding member 40, which is disposed on the emission path of the negative ions to enhance the electric field strength at the emitting end of the negative ion emitter 20.

[0073] Grounding component 40 is a conductor connected to the earth, and its potential is zero.

[0074] When the grounding element 40 is placed on the emission path of negative ions, the grounding element 40, acting as a counter electrode, forms an asymmetrical electric field distribution with the tip. Since the emitting end of the negative ion emitter 20 carries a negative high voltage, the electric field lines are highly concentrated on the surface of the emitting end of the negative ion emitter 20, resulting in a high electric field strength at the emitting end of the negative ion emitter 20. Therefore, more electrons can be ionized and combine with water molecules and oxygen molecules to form negative ions. In this embodiment of the negative ion generating device 100, the presence of the water mist sprayer 30 increases the humidity near the negative ion emitter 20, leading to more water molecules. Simultaneously, the grounding element 40 increases the electric field strength at the emitting end of the negative ion emitter 20, generating more negative ions. Thus, with the increase in both negative ions and water molecules, the combination of negative ions and water is easier and more efficient, further increasing the concentration of negative oxygen water ions. This allows negative ions in the air to survive for a longer period and travel to farther locations, resulting in higher propagation efficiency.

[0075] In other embodiments, the electric field strength at the emitting end of the negative ion emitter 20 can be increased by increasing the discharge voltage of the negative ion emitter 20. Specifically, this can be achieved by adding a boost module electrically connected to the negative ion emitter 20 to increase the electric field strength at the emitting end of the negative ion emitter 20. This also allows the negative ion emitter 20 to generate more negative ions, which then combine with water molecules to increase the concentration of negative oxygen ions in the water.

[0076] Furthermore, the water mist jet 30 is positioned on the negative ion emission path between the negative ion emitter 20 and the grounding member 40.

[0077] Thus, since the grounding component 40 is located on the emission path of negative ions, it ensures that the electric field strength at the emission end of the negative ion emitter 20 can be increased. The water mist sprayer 30 is located on the emission path of negative ions between the negative ion emitter 20 and the grounding component 40, and is therefore closer to the negative ion emitter 20. This results in greater humidity and more water molecules near the emission end of the negative ion emitter 20, allowing the negative ions generated at the emission end of the emitter 20 to combine with water molecules immediately, avoiding loss during the movement process and increasing the concentration of negative oxygen water ions.

[0078] In other embodiments, the water mist sprayer 30 is used to spray water mist onto the grounding member 40.

[0079] When the water mist sprayer 30 sprays water mist onto the grounding component 40, water droplets will adhere to the grounding component 40. In this way, when negative ions pass through the grounding component 40, they can combine with water molecules on the grounding component 40 to form negative oxygen water ions, thereby increasing the concentration of negative oxygen water ions.

[0080] It is understood that when the water mist sprayer 30 is used to spray water mist onto the grounding component 40, the water mist sprayer 30 can be placed between the negative ion emitter 20 and the grounding component 40, or it can be placed on the side of the grounding component 40 that is away from the negative ion emitter 20, without any restrictions.

[0081] In some embodiments, the negative ion generator 100 further includes a controller, which is communicatively connected to the water mist sprayer 30. The controller controls the water mist sprayer 30 to adjust the amount or direction of the sprayed water mist. This allows the amount or direction of the water mist to be adjusted based on the current state of negative ion emission from the negative ion emitter 20, enabling negative ions to better combine with water molecules and thus reliably increasing the concentration of negative oxygen ions. Of course, adjusting the direction of the sprayed water mist can also increase the spray coverage area, thereby increasing the probability of water molecules combining with negative ions and further increasing the concentration of negative oxygen ions.

[0082] Combination Figure 3In some embodiments, the grounding element 40 includes a grounding grid disposed on the emission path of the negative ions.

[0083] The grounding grid is a grounding component 40 with multiple mesh holes 41. Since the grounding component 40 is located downstream of the water mist jet 30 along the emission path of negative ions, the mesh holes 41 of the grounding component 40 reduce the impact on the airflow to the air outlet 12, and thus reduce the impact on the discharge of negative oxygen water ions to the air outlet 12.

[0084] Optionally, the mesh 41 can be square or all the mesh 41 can be honeycomb-shaped.

[0085] Because the square mesh openings 41 are large, the airflow area is large. Therefore, when multiple square mesh openings 41 are distributed on the grounding component 40, the mesh openings 41 are neatly arranged and closely spaced, increasing the overall airflow area of ​​the grounding component 40 and allowing negative oxygen water ions to be discharged more smoothly to the air outlet 12. When all the mesh openings 41 are honeycomb-shaped, all the mesh openings 41 are closely spaced and have large openings, thus also increasing the overall airflow area of ​​the grounding component 40 and allowing negative oxygen water ions to be discharged more smoothly to the air outlet 12.

[0086] In other embodiments, the mesh 41 may also be circular or rhomboid, etc., and there is no specific limitation.

[0087] Furthermore, the grounding element 40 is vertically disposed in the air outlet channel 11 in a direction perpendicular to the air outlet channel 11.

[0088] When the grounding component 40 is vertically installed in the air outlet 11 in a direction perpendicular to the air outlet 11, multiple mesh holes 41 can face the air outlet direction of the air outlet 11, further reducing the obstruction of the airflow by the grounding component 40, and making the negative oxygen water ions discharge to the air outlet 12 more smoothly.

[0089] Furthermore, there is a preset distance between the grounding component 40 and the negative ion emitter 20, and the value of the preset distance is no greater than 20 centimeters.

[0090] Studies have found that when the distance between the grounding component 40 and the negative ion emitter 20 is too large, the potential effect of the electric field strength is not obvious. Therefore, this application sets the preset distance between the grounding component 40 and the negative ion emitter 20 to no more than 20 centimeters, which can improve the reliability of enhancing the electric field strength at the emitting end of the negative ion emitter 20.

[0091] Optionally, the preset distance between the grounding element 40 and the negative ion emitter 20 is 10 cm.

[0092] When the preset distance between the grounding component 40 and the negative ion emitter 20 is 10 cm, the electric field strength at the emitting end of the enhanced negative ion emitter 20 can be reliably increased, ensuring the formation of more negative ions.

[0093] Based on the same inventive concept, an air purifier is also provided, including the negative ion generator 100 in any of the above embodiments.

[0094] In this way, by spraying water mist through the water mist sprayer, the humidity near the negative ion emitter 20 can be increased, which in turn increases the number of water molecules, enhances the efficiency of negative ions combining with water, and increases the concentration of negative oxygen water ions. This allows negative ions to survive in the air for a long time, and with the airflow, they can move to a farther place. Even in places far from the air outlet of the air outlet housing 10, there can be a high concentration of negative ions, thus improving the negative ion propagation efficiency.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A negative ion generating device, characterized in that, include: The air outlet housing has an air outlet channel; A negative ion emitter, connected to the air outlet channel, is used to emit negative ions into the air outlet channel; A water mist sprayer is connected to the air outlet channel and is used to spray water mist along the emission path of negative ions. as well as A grounding element is disposed on the emission path of negative ions to enhance the electric field strength at the emitting end of the negative ion emitter; Wherein, the water mist sprayer is located on the negative ion emission path between the negative ion emitter and the grounding component; or The water mist sprayer is used to spray water mist onto the grounding component.

2. The negative ion generating device according to claim 1, characterized in that, The negative ion emitter includes a tip corona discharge type negative ion emitter, which is connected to the air outlet channel.

3. The negative ion generating device according to claim 2, characterized in that, The negative ion emitter includes a carbon brush negative ion emitter, which is connected to the air outlet channel.

4. The negative ion generating device according to claim 1, characterized in that, The grounding component includes a grounding grid, which is disposed on the emission path of the negative ions.

5. The negative ion generating device according to claim 4, characterized in that, The grounding grid has multiple mesh openings, which may be square or honeycomb-shaped.

6. The negative ion generating device according to claim 4, characterized in that, The grounding grid is vertically installed in the air outlet channel in a direction perpendicular to the air outlet channel.

7. The negative ion generating device according to claim 1, characterized in that, There is a preset distance between the grounding component and the negative ion emitter, and the value of the preset distance is no greater than 20 centimeters.

8. The negative ion generating device according to claim 1, characterized in that, The negative ion generating device also includes a controller, which is communicatively connected to the water mist sprayer. The controller is used to control the water mist sprayer to adjust the amount or direction of the sprayed water mist.

9. The negative ion generating device according to claim 1, characterized in that, The water mist sprayer has a nozzle for spraying water mist, and the nozzle is located on the inner wall of the air outlet channel.

10. The negative ion generating device according to claim 1, characterized in that, The negative ion generator also includes an air outlet device, which is connected to the air outlet channel and is used to provide airflow to the air outlet channel.

11. The negative ion generating device according to claim 10, characterized in that, The air outlet device is located on the side of the negative ion emitter facing away from the water mist sprayer, and the negative ion generating device also includes a mounting part located in the air outlet channel. The mounting part is used to install the negative ion emitter, and the mounting part has a through flow hole.

12. An air purifier, characterized in that, Includes the negative ion generating device according to any one of claims 1 to 11.

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