Negative ion air purifying device and control method thereof

Abstract

The application relates to the technical field of air purification, in particular to a negative ion air purification device and a control method thereof. The negative ion air purification device comprises a negative ion generator and a fan. The control method comprises the following steps: obtaining a real-time negative ion concentration in an environment; judging a corresponding relationship between the real-time negative ion concentration and a preset negative ion concentration threshold; and controlling the negative ion generator and / or the fan to execute a corresponding working mode based on the corresponding relationship between the real-time negative ion concentration and the preset negative ion concentration threshold. The negative ion air purification device provided by the application can automatically adjust the working mode of the negative ion generator and / or the fan according to the obtained negative ion concentration in the environment, so that the purpose of ensuring that the negative ion concentration in the air is in a better state and saving energy consumption can be considered, the degree of intelligence is higher, and the user experience is better.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to a negative ion air purification device and its control method. Background Technology

[0002] Besides their purifying effects on microorganisms, air ions have a significant impact on human life activities. Known as "air vitamins" or "longevity factors," air ions can work in the central nervous system and blood circulation, effectively improving brain function, enhancing immunity, promoting metabolism, and relieving fatigue. When the concentration of negative ions in the air is below 100 per cubic centimeter, it can induce physiological disorders such as headaches and insomnia; when the number of negative ions in the air reaches 200 or more per cubic centimeter, it can improve physical health and provide a better user experience, such as greater calmness. Therefore, the concentration of negative ions in the air directly affects the user experience.

[0003] Negative ion air purifiers are air purifiers that can generate negative ions. They are increasingly favored by users because they can purify the air while producing negative ions. However, traditional negative ion air purifiers have a fixed and single working mode and cannot be adjusted according to the external environment, resulting in low adaptability and intelligence. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of existing negative ion air purification devices, which have a constant and single working mode, cannot be adjusted according to the external environment, and have low adaptability and intelligence. The present invention provides a negative ion air purification device and its control method that can adjust the working mode of the negative ion generator and / or fan according to the negative ion concentration information in the environment.

[0005] To address the aforementioned problems, in a first aspect, the present invention provides a control method for a negative ion air purifier, the negative ion air purifier comprising a negative ion generator and a fan, the control method comprising: acquiring the real-time negative ion concentration in the environment; determining the correspondence between the real-time negative ion concentration and a preset negative ion concentration threshold; and, based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold, controlling the negative ion generator and / or the fan to execute a corresponding operating mode.

[0006] Optionally, controlling the negative ion generator and / or the fan to perform the corresponding working mode based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold includes the following steps: determining whether the negative ion concentration in the environment is greater than a first preset concentration; if yes, controlling the negative ion generator to operate in an intermittent mode; if no, controlling the negative ion generator to operate in a normally open mode.

[0007] Optionally, the intermittent operation mode includes: controlling the negative ion generator to operate periodically, alternating between working and standby modes, wherein the working time of the negative ion generator is T1 and the standby time is T2 in each cycle, where T2 < T1.

[0008] Optionally, when it is determined that the concentration of negative ions in the environment is less than or equal to a first preset concentration, and the negative ion generator is controlled to operate in a normally open mode, the following steps are also performed:

[0009] Determine whether the concentration of negative ions in the environment is less than a second preset concentration, wherein the second preset concentration is less than the first preset concentration; if yes, control the fan to operate in the first gear mode; if no, control the fan to operate in the second gear mode; wherein the fan speed in the first gear mode is greater than the fan speed in the second gear mode.

[0010] Optionally, the first preset concentration is ≥200 particles / cm³. 3 The second preset concentration is 100 cells / cm³. 3 ; and / or, the fan speed in the first gear mode is 1400~1500 R / min; and / or, the fan speed in the second gear mode is less than 1000 R / min.

[0011] Optionally, T1 = 2 * T2.

[0012] Optionally, T1 is between 10 min and 30 min, T2 is between 5 min and 15 min, and the first preset concentration is ≥400 cells / cm³. 3 .

[0013] Optionally, the negative ion air purifier includes an automatic adjustment mode and a fixed operation mode, wherein the fixed operation mode includes a negative ion generator normally open mode and a negative ion generator normally closed mode, and the negative ion air purifier is equipped with a negative ion sensor for detecting negative ion concentration information in the environment.

[0014] Optionally, before the step of obtaining the real-time negative ion concentration in the environment, the following step is performed: receiving a signal to activate the automatic adjustment mode.

[0015] Optionally, the negative ion air purifier further includes a display unit, which, upon obtaining the real-time negative ion concentration in the environment, performs the following steps: controlling the display unit to display the negative ion concentration in real time in the form of text and / or graphics.

[0016] Optionally, the negative ion air purifier has a humidification function, and the control method further includes: determining whether the concentration of negative ions in the environment is greater than a first preset concentration; if so, controlling the whole machine to humidify for a first humidification duration t1; if not, further determining whether the concentration of negative ions in the environment is greater than a second preset concentration, wherein the second preset concentration is less than the first preset concentration; if so, controlling the whole machine to humidify for a second humidification duration t2; if not, controlling the whole machine to humidify for a third humidification duration t3; wherein t1 < t2 < t3.

[0017] In a second aspect, the present invention provides a negative ion air purifying device, comprising a housing, a negative ion generator, a fan, and a controller. A purification duct is formed within the housing, and the housing is provided with an air inlet and an air outlet communicating with the purification duct. The negative ion generator is disposed within the purification duct and near the air outlet. The fan is disposed within the purification duct and is adapted to drive air to flow in from the air inlet and out from the air outlet along the purification duct. The controller is connected to both the negative ion generator and the fan, and is used to control the negative ion air purifying device to perform the control method described in any of the above embodiments.

[0018] Optionally, the negative ion air purification device further includes a purification structure and a negative ion sensor. The purification structure is disposed in the purification duct and located between the fan and the air inlet, and is used to purify the air flowing through the purification duct. The negative ion sensor is mounted on the housing, and the detection end of the negative ion sensor is located outside the housing, and is used to detect the negative ion concentration information in the environment. The negative ion sensor is adapted to feed back the negative ion concentration information to the controller.

[0019] The present invention has the following advantages:

[0020] The negative ion air purifier provided in this invention can automatically adjust the working mode of the negative ion generator and / or fan based on the acquired negative ion concentration information in the environment. This balances maintaining an optimal negative ion concentration in the air with energy conservation, resulting in higher intelligence and a better user experience. For example, in environments with poor air quality and low negative ion concentration, the negative ion generator is kept constantly on while the fan speed is increased, causing a stable increase in the negative ion concentration and improving the user's health. In environments with good air quality and high negative ion concentration, the negative ion generator operates intermittently while the fan speed is reduced, achieving energy conservation while maintaining an optimal negative ion concentration. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the negative ion air purification device in the embodiment is shown;

[0023] Figure 2 A flowchart illustrating the control method of one embodiment of the negative ion air purification device is shown.

[0024] Figure 3 A flowchart illustrating the control method of another embodiment of the negative ion air purifier is shown.

[0025] Figure 4 A flowchart illustrating the control method of another embodiment of the negative ion air purifier is shown.

[0026] Figure 5 A flowchart illustrating the control method of another embodiment of the negative ion air purifier is shown.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Negative ion air purifier;

[0029] 10. Housing; 20. Fan; 30. Negative ion generator; 40. Purification structure; 50. Purification air duct; 501. Air inlet; 502. Air outlet; 60. Negative ion sensor. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Example 1

[0035] like Figure 1 and Figure 2 As shown, this embodiment provides a control method for a negative ion air purifier 100, which includes a negative ion generator 30 and a fan 20. The ion generator can produce negative ions, which have excellent purification and dust removal effects, and can reduce the harm of secondhand smoke, improve and prevent respiratory diseases, improve sleep, resist oxidation, prevent aging, remove free radicals in the body, and reduce blood viscosity. The control method of the negative ion air purifier 100 provided in this embodiment includes the following steps: acquiring the real-time negative ion concentration in the environment; determining the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold; and controlling the negative ion generator 30 and / or the fan 20 to execute the corresponding working mode based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold.

[0036] The negative ion air purifier 100 provided by the above solution can automatically adjust the working mode of the negative ion generator 30 and / or fan 20 according to the negative ion concentration information in the environment, so as to balance ensuring that the negative ion concentration in the air is in an optimal state and saving energy. It has a higher degree of intelligence and a better user experience.

[0037] For example, in an environment with poor air quality and low negative ion concentration, the negative ion generator 30 is kept on while the fan speed 20 is increased, so that the concentration of negative ions in the air increases steadily and improves the user's health. In an environment with good air quality and high negative ion concentration, the negative ion generator 30 is kept on intermittently while the fan speed 20 is reduced, so as to save energy while ensuring that the negative ion concentration is at an optimal level.

[0038] Optionally, combined Figure 1 and Figure 3 As shown, the step of controlling the negative ion generator and / or the fan to perform the corresponding working mode based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold includes the following steps: determining whether the negative ion concentration in the environment is greater than a first preset concentration; if yes, then controlling the negative ion generator 30 to work in an intermittent operating mode; if no, then controlling the negative ion generator 30 to work in a normally open operating mode.

[0039] In the above scheme, when the concentration of negative ions in the environment is greater than the first preset concentration, it indicates that the concentration of negative ions in the environment is at a high level. At this time, the negative ion generator 30 is controlled to stop working for a period of time after working for a period of time, so as to avoid the waste of resources caused by the continuous operation of the negative ion generator 30 and achieve the purpose of saving energy.

[0040] Optionally, the intermittent operation mode includes: during the operation of the negative ion air purifier 100, controlling the negative ion generator 30 to operate periodically, alternating between working and standby modes, with the working time of the negative ion generator 30 being T1 and the standby time being T2 in each cycle, where T2 < T1. That is, when the negative ion concentration in the environment is detected to be greater than a first preset concentration, the negative ion generator 30 is controlled to operate for T1 hours and then standby for T2 hours, where T2 < T1. This design ensures that the negative ion concentration in the environment can be stably maintained within a preset range and achieves the purpose of resource waste reduction.

[0041] In some preferred embodiments, T1 = 2 * T2, and the first preset concentration is ≥ 200 cells / cm³. 3 .

[0042] In some optional embodiments, T1 is 10-30 min, T2 is 5-15 min, and the first preset concentration is ≥400 cells / cm³. 3 .

[0043] Furthermore, in some preferred embodiments, T1 = 20 min, T2 = 10 min, and the first preset concentration is 400 cells / cm³. 3 When the concentration of negative ions in the environment is detected to be >400 ions / cm³3 The negative ion generator 30 is controlled to turn on the timer switch mode. In the timer switch mode, the negative ion generator 30 automatically turns on for 20 minutes, turns off for 10 minutes, turns on for 20 minutes, turns off for 10 minutes, and so on, working in a cycle.

[0044] In this embodiment, when it is determined that the concentration of negative ions in the environment is greater than the first preset concentration, the negative ion generator 30 is controlled to work intermittently to ensure that there is a high concentration of negative air ions in the air, allowing users to breathe fresh air, accelerating the movement of cilia in the respiratory epithelium, promoting blood circulation, enhancing brain nerve function, protecting the user's physical and mental health, and also achieving the purpose of saving energy.

[0045] Of course, in this embodiment, the first preset concentration is not limited to 400 cells / cm³. 3 The user can set the initial preset concentration themselves, based on personal habits, preferences, health conditions, and other factors. For example, users with weak immune systems or frequent headaches could set the initial preset concentration to 1000 cells / cm³. 3 , or even larger values.

[0046] In some embodiments, before determining whether the concentration of negative ions in the environment is greater than a first preset concentration, the following steps are performed: receiving a signal indicating that the user has set a first preset concentration, and updating the data of the first preset concentration based on the signal. This design meets the personalized needs of different users for negative ion concentration, thereby improving the applicability of the negative ion air purifier 100.

[0047] In some embodiments, combined with Figure 1 and Figure 4 As shown, when the concentration of negative ions in the environment is determined to be less than or equal to the first preset concentration, the negative ion generator 30 is controlled to operate in a normally open mode, and the following steps are also performed:

[0048] Determine whether the concentration of negative ions in the environment is less than a second preset concentration, wherein the second preset concentration is less than the first preset concentration; if yes, control the fan 20 to operate in the first gear mode; if no, control the fan 20 to operate in the second gear mode; wherein the fan speed in the first gear mode is greater than the fan speed in the second gear mode.

[0049] In the above scheme, when it is determined that the concentration of negative ions in the environment is less than the second preset concentration, i.e., the concentration of negative ions in the environment is particularly low, the negative ion generator 30 is kept on while the fan 20 is controlled to operate at a high speed in the first gear mode to accelerate the release of negative ions and air circulation, ensuring the user's physical and mental health. When it is determined that the concentration of negative ions in the environment is between the second preset concentration and the first preset concentration, i.e., the concentration of negative ions in the environment is at a medium level, the fan 20 is controlled to reduce its speed and operate in the second gear mode to reduce the energy consumption of the fan 20 and achieve the purpose of energy saving and emission reduction.

[0050] In some preferred embodiments, the second preset concentration is 100 cells / cm³. 3 The first gear mode is the highest speed mode. In the first gear mode, the fan speed R1 is 1400~1500 R / min, and the air volume is 500~600 m³ / min. 3 Approximately / h. Because the negative ion concentration is below 100 ions / cm³. 3 At this time, it can induce physiological disorders such as headaches and insomnia. Therefore, in this embodiment, the second preset concentration is set to 100 cells / cm³. 3 When the concentration of negative ions in the environment is less than 100 ions / cm³ 3 When the air quality is particularly poor, the negative ion generator 30 is kept on and the fan 20 is run at its highest speed to increase the air volume and accelerate the air circulation, thereby quickly increasing the concentration of negative ions in the air and improving the poor environment.

[0051] In some preferred embodiments, the fan speed R2 of the second gear mode is less than 1000 R / min.

[0052] In some implementations, the ion air purifier has high, medium, and low speed modes, with the second mode being a medium speed mode, where the fan 20 rotates at 800~900 R / min and the air volume is 400~500 m³ / min. 3 Approximately / h. Alternatively, in other variations, the negative ion air purifier only has a high-speed mode and a low-speed mode, with the second mode being the low-speed mode, in which the fan 20 rotates at 600~700 R / min and the air volume is 200~300 m³ / min. 3 The speed of the fan 20 is approximately [number] times per hour. The rotational speed of the fan 20 is negatively correlated with the concentration of negative ions; when the concentration of negative ions is high, the rotational speed of the fan 20 can be appropriately reduced, saving energy and lowering costs.

[0053] In one embodiment of the aforementioned ion air purification device with high, medium, and low speed modes, the fan 20 also has a third speed mode. In this third speed mode, the second speed mode is a medium speed mode, and the first speed mode is a high speed mode. The speed of the fan 20 in the third speed mode is set to R3, where R1 > R2 > R3.

[0054] Furthermore, in some modified embodiments, when it is determined that the concentration of negative ions in the environment is greater than a first preset concentration, i.e., the concentration of negative ions in the environment is at a high level, the negative ion generator 30 is controlled to operate intermittently, while the fan 20 is also controlled to operate in the third gear mode, further achieving the purpose of saving energy. Alternatively, in other embodiments, when it is determined that the concentration of negative ions in the environment is greater than the first preset concentration, the negative ion generator 30 is controlled to be constantly on, while the fan 20 is controlled to operate in the third gear mode.

[0055] In the above scheme, the fan speed R3 in the third gear mode is 600~700R / min, and the fan speed in the second gear mode is 800~900R / min.

[0056] Optionally, the negative ion air purifier 100 includes an automatic adjustment mode and a fixed operation mode, wherein the fixed operation mode includes a normally open mode for the negative ion generator 30 and a normally closed mode for the negative ion generator 30. When the automatic adjustment mode is activated, the negative ion air purifier 100 automatically adjusts the operating mode of the negative ion generator 30 according to the negative ion concentration information in the environment. Before the step of obtaining the real-time negative ion concentration in the environment, the following step is performed: receiving a signal to activate the automatic adjustment mode.

[0057] In this embodiment, the negative ion air purifier 100 is equipped with a negative ion sensor 60 for detecting the concentration of negative ions in the environment. Of course, the negative ion sensor 60 is not limited to being mounted on the casing; for example, it can also be obtained from other indoor environmental parameter monitoring devices.

[0058] Optionally, the control method specifically includes the following steps: receiving an automatic adjustment mode signal, controlling the negative ion sensor 60 to start, detecting the concentration of negative ions in the environment in real time, and feeding back the negative ion concentration to the control unit of the negative ion air purifier 100, wherein the control unit adjusts the working mode of the negative ion generator 30 and / or the fan 20 according to the negative ion concentration information. Alternatively, receiving a normally open mode signal for the negative ion generator 30, controlling the negative ion generator 30 to remain continuously powered on to continuously release negative ions. Alternatively, receiving a signal to activate the normally closed mode of the negative ion generator 30, controlling the negative ion generator 30 to turn off and cease operation.

[0059] Optionally, the negative ion air purifier 100 further includes a display unit connected to the control unit, which, upon obtaining the real-time negative ion concentration in the environment, performs the following steps: controlling the display unit to display the negative ion concentration in real-time in the form of text and / or graphics.

[0060] In some embodiments, on the display and control interface of the entire unit, users can switch between three modes of the negative ion function: "normally on," "normally off," and "automatic" by briefly pressing the "Mode" button. When "normally on" is selected, the negative ion generator 30 remains continuously powered on and continuously releases negative ions; when "normally off" is selected, the negative ion generator 30 is turned off and does not work; when "automatic" mode is selected, the negative ion sensor 60 is always on, constantly detecting the concentration of negative ions in the air and displaying the concentration on the display and control interface for user reference. When rotating to select "automatic" mode, if the detected concentration of negative ions in the environment is >400 ions / cm³, the negative ion generator will automatically activate. 3 When the negative ion generator 30 is in intermittent working mode, also known as timed switch mode, the negative ion generator automatically turns on for 20 minutes and off for 10 minutes, then turns on for 20 minutes and off for 10 minutes, and so on, in a continuous cycle. When the concentration of negative ions in the environment is detected to be between 100-400 ions / cm³, the generator will continue to operate. 3 During this period, the negative ion generator 30 operates continuously and controls the fan 20 to start and purify the air in the second gear mode; when the concentration of negative ions in the environment is detected to be <100 ions / cm³, the negative ion generator 30 operates normally. 3 When the negative ion generator 30 is in operation, it controls the fan 20 to start and purify the air in the first gear mode. The speed of the first gear mode is 1400~1500R / min, which accelerates the release of negative ions and air circulation, ensuring the user's physical and mental health.

[0061] In some embodiments, the negative ion air purifier 100 has a humidification function, see [link to documentation]. Figure 5 As shown, the control method further includes:

[0062] Determine whether the concentration of negative ions in the environment is greater than the first preset concentration: if yes, control the whole machine to humidify for the first humidification time t1; if no, further determine whether the concentration of negative ions in the environment is greater than the second preset concentration, wherein the second preset concentration is less than the first preset concentration; if yes, control the whole machine to humidify for the second humidification time t2; if no, control the whole machine to humidify for the third humidification time t3; wherein t1 < t2 < t3.

[0063] In the above embodiment, when it is determined that the concentration of negative ions in the environment is greater than the first preset concentration, the machine is controlled to humidify for a first humidification duration t1; when it is determined that the concentration of negative ions in the environment is between the second preset concentration and the first preset concentration, wherein the second preset concentration is less than the first preset concentration, the machine is controlled to humidify for a second humidification duration t2; when it is determined that the concentration of negative ions in the environment is less than the second preset concentration, the machine is controlled to humidify for a third humidification duration t3, wherein the first humidification duration t1 < the second humidification duration t2 < the third humidification duration t3. Thus, when the concentration of negative ions in the environment is low, increasing the humidification duration can effectively improve environmental quality and enhance user comfort; when the concentration of negative ions in the environment is high, the humidification duration can be adaptively reduced to achieve energy savings.

[0064] Optionally, in the above scheme, the first preset concentration is ≥200 cells / cm³. 3 The second preset concentration is 100 cells / cm³. 3 Preferably, the first preset concentration is 400 particles / cm³. 3 .

[0065] For example, the concentration of negative ions in the environment is less than 100 ions / cm³. 3 At that time, the humidification time of the whole machine is set to 3 hours; the negative ion concentration is 100-400 ions / cm³. 3 At that time, the humidification time of the whole machine is set to 2 hours; the negative ion concentration is greater than 400 ions / cm³. 3 At that time, the humidification time of the whole machine is reduced to 1 hour.

[0066] The negative ion air purifier 100 provided in this embodiment can detect the concentration of negative ions in the environment in real time and display a reminder to the user to adjust the mode as needed. The whole machine control logic can automatically switch modes according to the detected negative ion concentration, so as to achieve a stable increase in the concentration of negative ions in the air in poor air quality environments and improve the user's health.

[0067] Example 2

[0068] This embodiment provides a negative ion air purifier 100, including a housing 10, a negative ion generator 30, a fan 20, and a controller. The housing 10 has a purification duct 50 formed therein, and an air inlet 501 and an air outlet 502 communicating with the purification duct 50 are provided on the housing 10. The negative ion generator 30 is disposed within the purification duct 50 and near the air outlet 502, located upstream of the air outlet 502, between the air outlet and the fan 20. The fan 20 is disposed within the purification duct 50 and is adapted to drive airflow from the air inlet 501 into the purification duct 50 and out through the air outlet 502. The controller is connected to both the negative ion generator 30 and the fan 20, and is used to control the negative ion air purifier 100 to execute the control method described in any of the above embodiments.

[0069] In this embodiment, the negative ion generator 30 has a compact structure and is mounted at the airflow point between the air outlet 502 and the fan 20. This ensures that the negative ions released by the generator's brush head are carried by the purified air through the air outlet 502, continuously increasing the concentration of negative ions in the air. Generally, the brush head of the negative ion generator 30 should be positioned towards the airflow point of the air outlet 502. The brush head size is typically around 1-2 cm and will not affect the airflow.

[0070] Optionally, the negative ion air purifier 100 further includes a purification structure 40 and a negative ion sensor 60. The purification structure 40 is disposed within the purification duct 50 and located between the fan 20 and the air inlet 501, for purifying the air flowing through the purification duct 50. Optionally, the purification structure 40 includes a filter screen disposed upstream of the purification duct 50. Preferably, the purification structure 40 further includes a deodorizing screen disposed between the filter screen and the fan 20. The filter screen and deodorizing screen can adsorb particulate matter or odors in the air, achieving the purpose of purifying and freshening the air. Under the action of the fan 20, outside air is drawn into the purification duct 50 and passes through the filter screen and deodorizing screen in sequence along the purification duct 50, intercepting fine substances such as PM2.5, VOCs, bacteria, and viruses, and removing odors. The purified air carries the negative ions generated by the negative ion generator 30 out to the external environment at the air outlet 502.

[0071] Furthermore, a negative ion sensor 60 is disposed on the housing 10, preferably on the top of the housing 10. The detection end of the negative ion sensor 60 is located outside the housing 10 and is used to detect the concentration of negative ions in the environment. The negative ion sensor 60 is connected to the controller to feed back the negative ion concentration information to the controller.

[0072] Preferably, the negative ion sensor 60 is located on the side or the top of the rear of the housing 10. In this embodiment, the negative ion sensor 60 is mounted on the side of the unit, with its main body inside the housing 10. An opening in the side panel allows the sensor's detection end to extend, facilitating better detection of the negative ion concentration in the air. The sensor's detection end only needs to be able to detect circulating air outside the housing 10. The negative ion sensor 60 is generally installed in the upper-middle part of the unit for more accurate detection data. Positioning the negative ion sensor 60 on the side or rear of the housing 10 avoids the panel opening affecting the aesthetics of the user experience from the front view.

[0073] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A control method for a negative ion air purification device, characterized in that, The negative ion air purification device includes a negative ion generator and a fan, and the control method includes: Obtain the real-time concentration of negative ions in the environment; Determine the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold; Based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold, the negative ion generator and the fan are controlled to perform corresponding working modes. The step of controlling the negative ion generator and the fan to perform corresponding working modes based on the correspondence between the real-time negative ion concentration and the preset negative ion concentration threshold includes the following steps: Determine if the concentration of negative ions in the environment is greater than the first preset concentration: If yes, then the negative ion generator is controlled to operate in an intermittent mode; if no, then the negative ion generator is controlled to operate in a normally open mode. When the concentration of negative ions in the environment is determined to be less than or equal to the first preset concentration, and the negative ion generator is controlled to operate in a normally open mode, the following steps are also performed: Determine whether the concentration of negative ions in the environment is less than a second preset concentration, wherein the second preset concentration is less than the first preset concentration; If yes, then control the fan to operate in the first gear mode; if no, then control the fan to operate in the second gear mode. In the first gear mode, the fan speed is greater than that in the second gear mode. When the concentration of negative ions in the environment is greater than the first preset concentration, the system controls the negative ion generator to work intermittently and also controls the fan to run in the third gear mode. The fan speed in the third gear mode is lower than the fan speed in the second gear mode.

2. The control method for the negative ion air purification device according to claim 1, characterized in that, The intermittent operation mode includes: The negative ion generator is controlled to operate periodically, alternating between working and standby modes. In each cycle, the working time of the negative ion generator is T1, and the standby time is T2, where T2 < T1.

3. The control method for the negative ion air purification device according to claim 1, characterized in that, The first preset concentration is ≥200 particles / cm³ 3 The second preset concentration is 100 cells / cm³. 3 ; And / or, the fan speed in the first gear mode is 1400~1500 R / min; And / or, the fan speed in the second gear mode is less than 1000 R / min.

4. The control method for the negative ion air purification device according to claim 2, characterized in that, T1 = 2 * T2.

5. The control method for the negative ion air purification device according to claim 4, characterized in that, T1 is between 10 min and 30 min, T2 is between 5 min and 15 min, and the first preset concentration is ≥400 cells / cm³. 3 .

6. The control method for the negative ion air purification device according to claim 1 or 2, characterized in that, The negative ion air purifier includes an automatic adjustment mode and a fixed operation mode. Before the step of obtaining the real-time negative ion concentration in the environment, the following steps are performed: Receive a signal to activate the automatic adjustment mode.

7. The control method for the negative ion air purification device according to claim 1 or 2, characterized in that, The negative ion air purifier has a humidification function, and the control method further includes: Determine whether the concentration of negative ions in the environment is greater than the first preset concentration. If so, control the whole machine to humidify for the first humidification time t1. If not, determine whether the concentration of negative ions in the environment is greater than the second preset concentration, wherein the second preset concentration is less than the first preset concentration; If yes, then control the whole machine to humidify for the second humidification duration t2; if no, then control the whole machine to humidify for the third humidification duration t3. Where t1 < t2 < t3.

8. A negative ion air purification device, characterized in that, include: The housing has a purification air duct inside, and the housing is provided with an air inlet and an air outlet that communicate with the purification air duct. The negative ion generator is installed inside the purification duct and near the air outlet. The fan, installed inside the purification duct, is used to drive the air in through the air inlet and out through the air outlet along the purification duct. A controller, connected to the negative ion generator and the fan respectively, is used to control the negative ion air purification device to perform the control method described in any one of claims 1-7.

9. The negative ion air purifier according to claim 8, characterized in that, The negative ion air purification device also includes: A purification structure is installed inside the purification duct to purify the air flowing through the purification duct. A negative ion sensor is mounted on the housing, with the detection end of the negative ion sensor located outside the housing. It is used to detect the concentration of negative ions in the environment and to feed the negative ion concentration information back to the controller.

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