Air purification apparatus and cleaning method thereof

Abstract

The present application relates to the technical field of air purification, and discloses an air purification device and a cleaning method thereof, the air purification device comprising: a shell, a dust collection structure and an automatic cleaning device, a purification air duct is formed in the shell; the dust collection structure comprises a plurality of dust collection plates arranged linearly and at intervals; the automatic cleaning device is movably arranged above the dust collection structure along the length direction of the dust collection structure and is used for cleaning the dust collection structure; the automatic cleaning device comprises a cleaning component with multiple degrees of freedom, the cleaning component has a cleaning state capable of extending into the space between the dust collection plates and moving along the width direction of the dust collection structure and a homing state capable of being reset and folded above the dust collection structure. The automatic cleaning device of the present application can not only move along the length direction of the dust collection structure, but also extend into the space between the dust collection plates and move along the width direction of the dust collection plates, so that the dust collection plates can be cleaned in the transverse direction to clean the entire plate surface, and there is no cleaning dead angle, and the cleaning is more in place and complete.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to air purification equipment and its cleaning methods. Background Technology

[0002] Plasma technology is widely used in VOCs removal and dust collection due to its advantages such as high efficiency and low cost. In the future, multifunctional electro-purification products without consumables will inevitably gain more and more favor among users. However, to date, the purification methods used by air purification equipment are basically to intercept PM1.0 to PM10 particles in pollutant gases and store the pollutant particles on the designed filter or dust collection plate.

[0003] Taking the dust collection plate in an electrostatic precipitator as an example, dust accumulates on its surface after a period of operation. When the accumulated dust reaches a certain level, it can cause problems such as low dust collection efficiency, malfunctions, bacterial growth, secondary dust re-entrainment, and corrosion of the dust collection plate. Therefore, those skilled in the art have designed specialized cleaning devices for cleaning dust from the dust collection plate. However, while existing cleaning devices can remove accumulated dust to some extent, there are still blind spots in the cleaning process, leading to incomplete or inadequate cleaning. Summary of the Invention

[0004] In view of this, the present invention provides an air purification device and its cleaning method to solve the problem that existing air purification devices have cleaning dead spots, resulting in inadequate or incomplete cleaning.

[0005] In a first aspect, the present invention provides an air purification device, including a housing, a dust collection structure, and an automatic cleaning device. The housing is provided with an air inlet and an air outlet, and a purification air duct is formed between the air inlet and the air outlet. The dust collection structure is disposed within the purification air duct and includes a plurality of dust collection plates arranged linearly at intervals. The automatic cleaning device is movably disposed above the dust collection structure along the length direction of the dust collection structure for cleaning the dust collection structure. The automatic cleaning device includes a cleaning component with multiple degrees of freedom, the cleaning component having a cleaning state in which it can extend into the space between the dust collection plates and move along the width direction of the dust collection structure, and a returning state in which it can be reset and retracted above the dust collection structure.

[0006] In one optional embodiment, the air purification device further includes an image recognition device and a control unit. The image recognition device is used to acquire image information of the dust collection plate and obtain dust accumulation information of the dust collection plate based on the image information. The control unit is used to determine whether the degree of dust accumulation on the dust collection plate is greater than a preset dirt threshold based on the dust accumulation information obtained by the image recognition device, and to control the automatic cleaning device to start when it is determined that the degree of dust accumulation on the dust collection plate is greater than the preset dirt threshold, so as to clean the dust collection structure.

[0007] In one optional embodiment, the image recognition device includes a first image recognition unit and a second image recognition unit. The first image recognition unit is disposed on one or both sides of the dust collection structure along the length direction and is used to identify the dust accumulation thickness information on the dust collection plate. The second image recognition unit is disposed on one or both sides of the dust collection structure along the width direction and is used to identify the dust accumulation area information on the dust collection plate.

[0008] The first and second image recognition units enable multi-dimensional and accurate identification of dust conditions on the dust collection plate, multi-area assessment, and precise feedback. This allows for accurate detection of dust accumulation on the dust collection plate, timely cleaning of the dust collection structure, and effective prevention of problems such as low dust collection efficiency and secondary pollution caused by excessive dust.

[0009] In one alternative implementation, the automatic cleaning device cleans the dust accumulation on the dust collection structure by high-pressure air blowing and / or brush scraping. Compared with existing water cleaning, it can effectively avoid the safety hazards caused by the mixing of water flow and high-voltage electrodes, and is safer. At the same time, it avoids the problems of the existing water washing process being cumbersome and inefficient due to the need to avoid the high-voltage electrodes.

[0010] In one optional embodiment, the air purification device further includes a dust-blocking mechanism disposed within the purification duct. The dust-blocking mechanism comprises two sets, which are respectively disposed on both sides of the dust collection structure along the airflow direction, and are adapted to close the purification duct when the automatic cleaning device is in operation to prevent dust from being generated.

[0011] In one optional embodiment, the dust-blocking mechanism includes a fixed baffle, a rotating baffle, and a dust-blocking driving component. The fixed baffle is a fan-shaped structure fixedly disposed within the housing; the rotating baffle is a fan-shaped structure coaxially disposed with the fixed baffle and rotatably disposed on one side of the fixed baffle; the dust-blocking driving component is connected to the rotating baffle and is adapted to drive the rotating baffle to rotate between a misaligned position that is offset from the fixed baffle to close the purification air duct and a coincident position that coincides with the fixed baffle to open the purification air duct. By employing the above-described rotating opening and closing method, the purification air duct can be opened or closed, making the opening and closing process simple and efficient.

[0012] In one optional embodiment, the dust-blocking mechanism includes an upper dust-blocking mechanism and a lower dust-blocking mechanism located on the upper and lower sides of the dust collection structure. The lower dust-blocking mechanism can be pulled out or pushed into the housing. During the cleaning process, dust will fall onto the lower dust-blocking mechanism under the action of gravity, and the lower dust-blocking mechanism plays the role of collecting cleaning dust. Therefore, after the automatic cleaning device completes the cleaning program, the lower dust-blocking mechanism can be pulled out to clean the cleaning dust collected on it, making the dust removal method simple and convenient.

[0013] In one optional embodiment, the side wall of the housing is provided with an openable or closable cleaning port, located between the lower dust-blocking mechanism and the dust collection structure. Under normal conditions, the cleaning port is in a closed state to ensure the airtightness of the purification duct. After cleaning the dust collection structure, the cleaning port can be opened, and the dust collected on the lower dust-blocking mechanism can be cleaned out using an auxiliary tool, simplifying the structure.

[0014] In one optional embodiment, a collection box is provided inside the housing, located below the lower dust-blocking mechanism, with an open top to collect cleaning dust when the dust-blocking mechanism is open. When the dust-blocking mechanism is opened after cleaning, the dust collected on it falls into the collection box from the original position of the rotating baffle, i.e., the opening of the dust-blocking mechanism. Preferably, the rotating baffle is positioned above the fixed baffle, and when the dust-blocking mechanism is open, the rotating baffle also scrapes and pushes the dust off the fixed baffle. Users can periodically remove the collection box to empty the collected dust and clean it, which is very convenient.

[0015] In one alternative embodiment, the cleaning component also has a rotational state that allows it to rotate about its own central axis.

[0016] In one optional embodiment, the length direction of the dust collection structure is defined as a first direction, the width direction as a second direction, and the height direction as a third direction. The automatic cleaning device further includes a sliding base, a movable slider, and a first driving component. The sliding base is adapted to be slidably connected to the housing along the first direction. The sliding base is a frame structure and includes two guide rods arranged opposite each other. The extension direction of the guide rods is parallel to the second direction. The movable slider is movably disposed on the guide rods along their length direction. The cleaning component is connected to the movable slider and is adapted to be guided to move along the second direction by the movable slider. The cleaning component and the movable slider are rotatably connected by a horizontal pivot. The first driving component is adapted to drive the cleaning component to rotate in the plane containing the second and third directions to clean the entire surface of the dust collection plate, achieving a dust collection structure with no dead angles.

[0017] In one optional embodiment, the cleaning component includes a second driving component and a cleaning roller. There are two horizontal rotating shafts, fixedly disposed on both sides of the second driving component. The length of the cleaning roller is not less than the height of the dust collection plate, ensuring that when the cleaning roller extends into the space between the plates, it can reach every height position of the dust collection plate in the height direction. The cleaning roller is fixedly connected to the output shaft of the second driving component, which is adapted to drive the cleaning roller to rotate around its own central axis to improve the cleaning effect on the dust collection plate.

[0018] In one optional embodiment, the first driving component includes a first power component and a drive gear. The first power component is fixedly mounted on the sliding base; the drive gear is fixedly mounted on the output shaft of the first power component, and the first power component is adapted to drive the drive gear to rotate in the plane containing the second direction and the third direction. The cleaning component is fixedly provided with a driven gear or meshing teeth adapted to engage with the drive gear. The first power component drives the cleaning component to rotate in the plane containing the second direction and the third direction with the horizontal rotating shaft as the rotation center through the meshing and transmission of the drive gear and the driven gear or meshing teeth. By using the above-mentioned gear engagement structure as an intermediate transmission component to drive the rotation of the cleaning component, the movement of the entire cleaning component is more stable, the transmission is more accurate and reliable, and the control precision is higher.

[0019] In one optional embodiment, the outer periphery of the cleaning roller is provided with a brush, which is adapted to scrape and clean the dust on the dust collection plate by controlling the rotation of the cleaning roller and / or its movement in a second direction; and / or, the cleaning roller has a high-pressure air chamber connected to a high-pressure device, and the peripheral wall of the cleaning roller is provided with a plurality of spray holes, which are adapted to clean the dust on the dust collection plate by controlling the spray holes on the outer periphery of the cleaning roller to spray high-pressure airflow outward.

[0020] In one optional embodiment, the automatic cleaning device further includes a third driving component adapted to drive the movable slider to move along the second direction. A slider conveyor belt is disposed on the guide rod, and the movable slider is fixedly disposed on the slider conveyor belt. The third driving component drives the slider conveyor belt to rotate, thereby moving the movable slider. Alternatively, the movable slider is slidably connected to the guide rod, and the third driving component includes a drive shaft that can extend and retract along the second direction, the drive shaft being connected to the movable slider.

[0021] In one optional embodiment, the air purification device further includes a high-voltage electrode, an ozone reduction mesh, and a fan. The high-voltage electrode is disposed in the purification duct between the air inlet and the dust collection structure. The high-voltage electrode is used to ionize air to generate free charges. Multiple dust collection plates are sequentially and alternately connected to the high-voltage electrode and the ground electrode. The ozone reduction mesh is disposed in the purification duct between the dust collection structure and the air outlet and is used to adsorb ozone in the flowing air. The fan is disposed in 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.

[0022] Secondly, the present invention also provides a cleaning method for cleaning the air purification equipment described in any of the above embodiments. The cleaning method includes: receiving a cleaning start command and controlling the automatic cleaning device to start; controlling the cleaning component of the automatic cleaning device to extend into the space between the dust collection plates at a preset working position, and controlling the cleaning component to move along the width direction of the dust collection structure to clean the entire surface of the dust collection plate; controlling the cleaning component to return to its original position, and controlling the automatic cleaning device to move to the next working position to continue cleaning the dust collection structure.

[0023] In one optional implementation, receiving the cleaning start command includes: receiving a time signal, or receiving a user trigger signal, or receiving a feedback signal that the dust accumulation on the dust collection plate is greater than a preset dirt threshold.

[0024] In one optional implementation, receiving the start cleaning command and controlling the automatic cleaning device to start includes the following steps: acquiring a cross-sectional image of the dust collection plate using a first image recognition unit and acquiring a surface image of the dust collection plate using a second image recognition unit; performing grayscale processing on the cross-sectional image and the surface image respectively to obtain a cross-sectional grayscale image and a surface grayscale image; based on the cross-sectional grayscale image, identifying the boundary between the dust accumulation layer and the dust collection plate using edge detection, and calculating the thickness d1 of the dust accumulation layer; based on the surface grayscale image, identifying the boundary between the dust accumulation layer and the dust collection plate using edge detection, and calculating the coverage area s1 of the dust accumulation area; if it is determined that the thickness d1 of the dust accumulation layer is greater than or equal to a first set threshold, or the coverage area s1 of the dust accumulation area is greater than or equal to a second set threshold, then controlling the automatic cleaning device to start.

[0025] In one optional implementation, after receiving the start cleaning command, the automatic cleaning device is controlled to perform the following steps before starting: controlling the dust blocking mechanism to close the purification air duct to prevent dust from being generated; and controlling the dust blocking mechanism to open the purification air duct after cleaning is completed.

[0026] In one alternative implementation, after receiving the cleaning start command, the following steps are further performed:

[0027] Step S201: Control the automatic cleaning device to move along the first direction to a preset starting position near one end of the dust collection structure; Step S202: Control the cleaning component to rotate from the second direction to the third direction to extend into the space between the dust collection plates located at the preset starting position; Step S203: Control the cleaning roller of the cleaning component to rotate around its own central axis, and simultaneously control the cleaning component to move along the width direction of the dust collection plate from the preset starting position to the other end to clean the entire surface of the dust collection plate; Step S204: Clean the entire surface of the dust collection plate. After cleaning, the cleaning component is controlled to retract to its initial position along the second direction, and the cleaning component is controlled to rotate from the third direction to the second direction to realize the return of the automatic cleaning device to its original position; Step S205: The automatic cleaning device is controlled to move along the first direction to the space between the dust collection plates of the next working position, and steps S202 to S204 are repeated; Step S206: During the cleaning of the dust collection structure, if it is determined that the number of times the automatic cleaning device moves along the first direction has reached the set number, the cleaning program is stopped after the automatic cleaning device is controlled to return to its original position, and the user is prompted.

[0028] The technical solution of this invention has the following advantages:

[0029] 1. The air purification equipment provided by this invention features an automatic cleaning device that can not only clean along the length of the dust collection structure but also extend into the spaces between the dust collection plates and move along the width of the dust collection plates. This allows for sweeping across the entire surface of the dust collection plates, eliminating blind spots and ensuring thorough cleaning. After completing cleaning at the current work station, the automatic cleaning device moves along the length of the dust collection structure to the next work station, achieving efficient cleaning of the entire dust collection structure. This achieves intelligent cleaning, frees up manpower, and promotes a high degree of product intelligence. It effectively solves the problems of inadequate cleaning of the dust collection structure in existing air purification equipment after dust accumulation, resulting in blind spots, low dust collection efficiency, malfunctions, bacterial growth, secondary dust re-entrainment, and dust collection plate corrosion.

[0030] 2. The air purification equipment provided by the present invention collects image information of the dust collection plate through an image recognition device, monitors the dust accumulation level of the dust collection structure in real time, and automatically controls the automatic cleaning device to start cleaning the dust collection structure when it is determined that the dust accumulation is serious. With the help of image recognition, it can accurately identify and quickly provide feedback on the dust accumulation status of the dust collection structure, which is more intelligent and can perform more targeted cleaning according to the actual dust accumulation status of the dust collection structure, effectively avoiding the problem of resource waste.

[0031] 3. The air purification equipment provided by the present invention has two dust-blocking mechanisms located on the upper and lower sides of the dust collection structure to seal the purification air duct when the automatic cleaning device is working. In this way, a relatively closed cleaning space can be separated in the purification air duct. The purification air duct and the automatic cleaning device are both located in the closed cleaning space, which can effectively prevent dust on the dust collection plate from overflowing from the air outlet and air inlet or falling onto other parts inside the housing during the cleaning process of the automatic cleaning device on the dust collection structure, causing secondary dust and contaminating other parts, thus improving the user experience. Attached Figure Description

[0032] 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.

[0033] Figure 1 This is a front sectional view of an air purification device according to an embodiment of the present invention;

[0034] Figure 2 This is a top view of the automatic cleaning device according to an embodiment of the present invention in the XY plane;

[0035] Figure 3 This is a schematic diagram showing that the fixed baffle and the rotating baffle of the dust-blocking mechanism in an embodiment of the present invention are in a staggered position, i.e., in a closed state;

[0036] Figure 4 This is a schematic diagram of a dust collection plate with accumulated dust in the thickness direction according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the surface of a dust collection plate with accumulated dust, according to an embodiment of the present invention.

[0038] Figure 6 This is a schematic flowchart of a cleaning method according to an embodiment of the present invention;

[0039] Figure 7 This is another schematic diagram of the cleaning method according to an embodiment of the present invention;

[0040] Figure 8 This is another schematic diagram of the cleaning method according to an embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Housing; 10. Slide rail;

[0043] 2. Dust collection structure; 21. Dust collection plate; 201. Dust accumulation layer; 202. Dust accumulation area;

[0044] 3. Automatic cleaning device; 31. Cleaning component; 311. Cleaning roller; 312. Second drive component; 313. Horizontal rotating shaft; 314. Driven gear; 32. Sliding base; 33. Moving slider; 34. Drive gear; 35. Third drive component; 36. Slider conveyor belt;

[0045] 41. First image recognition unit; 42. Second image recognition unit;

[0046] 5. Dust blocking mechanism; 51. Upper dust blocking mechanism; 52. Lower dust blocking mechanism; 501. Fixed baffle; 502. Rotating baffle;

[0047] 6. High-voltage electrode; 7. Ozone reduction network; 8. Fan. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

[0049] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0050] Automatic cleaning devices in related air purification equipment primarily target cylindrical filters or cylindrical dust collection structures composed of multiple cylindrical dust collection plates. These devices typically clean the outer periphery of the filter or collection structure, unable to reach the inner periphery or the spaces between the plates, resulting in cleaning dead zones and incomplete cleaning. Furthermore, these technologies generally employ water washing, requiring careful consideration of keeping the cleaning process away from high-voltage discharge electrodes to avoid potential safety hazards, thus complicating the cleaning process.

[0051] According to embodiments of the present invention, such as Figures 1 to 5As shown, an air purification device is provided, including a housing 1, a dust collection structure 2, and an automatic cleaning device 3. The housing 1 has an air inlet and an air outlet, forming a purification air duct between the air inlet and the air outlet. The dust collection structure 2 is disposed within the purification air duct and includes multiple dust collection plates 21 arranged linearly at intervals. The surface of the dust collection plates 21 is aligned with the airflow direction within the purification air duct. The multiple dust collection plates 21 are evenly spaced. The automatic cleaning device 3 is movably disposed above the dust collection structure 2 along its length and is used to clean the dust collection structure 2. The automatic cleaning device 3 includes a cleaning component 31 with multiple degrees of freedom. The cleaning component 31 has a cleaning state in which it can extend into the spaces between the dust collection plates 21 and move along the width direction of the dust collection structure 2, and a returning state in which it can be retracted above the dust collection structure 2. When the cleaning component 31 is in the returned position, there is a set safety interval between the automatic cleaning device 3 and the dust collection structure 2 to avoid interference between the automatic cleaning device 3 and the dust collection structure 2 when the automatic cleaning device 3 moves to the next working position along the length direction of the dust collection structure 2, thereby improving safety.

[0052] In the above embodiment, the automatic cleaning device 3 can not only move along the length of the dust collection structure 2, but the cleaning component 31 can also extend into the space between the dust collection plates 21 and move along the width of the dust collection plates 21. This allows for sweeping the entire surface of the dust collection plates 21, eliminating cleaning dead corners and ensuring a more thorough and complete cleaning. After cleaning is completed at the current work station, the automatic cleaning device 3 moves along the length of the dust collection structure 2 to the next work station, thus achieving efficient cleaning of the entire dust collection structure 2. This achieves intelligent cleaning, frees up manpower, and promotes a high degree of product intelligence. It effectively solves the problems of inadequate cleaning of the dust collection structure 2 in existing air purification equipment after dust accumulation, resulting in cleaning dead corners, low dust collection efficiency, malfunctions, bacterial growth, secondary dust re-entrainment, and corrosion of the dust collection plates 21.

[0053] In one embodiment, the automatic cleaning device 3 can be set to clean once at a predetermined interval, employing a periodic automatic cleaning mode. For example, the automatic cleaning device 3 automatically starts every month to clean the dust collection structure periodically. In another embodiment, the automatic cleaning device 3 can also clean according to user instructions. For example, if the air purifier has a cleaning button, pressing the button will start the automatic cleaning device 3. In yet another embodiment, a detection mechanism can be used to identify and detect the dust accumulation on the dust collection plate 21. When the dust accumulation is determined to be severe, the automatic cleaning device 3 will automatically start and clean the dust collection structure 2, resulting in a higher level of intelligence. The automatic cleaning device 3 in this embodiment can be controlled individually or in any combination of the above three implementation methods.

[0054] In one optional embodiment, the air purification device further includes an image recognition device and a control unit, with the image recognition device disposed within the housing 1. Preferably, the image recognition device is disposed on the inner side of the peripheral wall of the housing 1, corresponding to the height position of the dust collection structure 2. The image recognition device, acting as a detection mechanism, is used to acquire image information of the dust collection plate 21 and obtain dust accumulation information of the dust collection plate 21 based on the image information, wherein the dust accumulation information includes information such as dust accumulation thickness, dust accumulation location, and dust accumulation area. The control unit is used to determine whether the degree of dust accumulation on the dust collection plate 21 exceeds a preset dirt threshold based on the dust accumulation information obtained by the image recognition device, and when it is determined that the degree of dust accumulation on the dust collection plate 21 exceeds the preset dirt threshold, it controls the automatic cleaning device 3 to start cleaning the dust collection structure 2.

[0055] In the above embodiment, the image information of the dust collection plate 21 is collected by the image recognition device, the dust accumulation degree of the dust collection structure 2 is monitored in real time, and when it is determined that the dust accumulation is serious, the automatic cleaning device 3 is automatically controlled to start cleaning the dust collection structure 2. With the cooperation of image recognition, the dust accumulation of the dust collection structure 2 can be accurately identified and quickly fed back, which has a higher degree of intelligence and can perform more targeted cleaning according to the actual dust accumulation of the dust collection structure 2, effectively avoiding the problem of resource waste.

[0056] In one alternative implementation, see [link to implementation details]. Figure 1 As shown, the image recognition device includes a first image recognition unit 41 and a second image recognition unit 42. The first image recognition unit 41 is disposed on one or both sides of the dust collection structure 2 along its length. The first image recognition unit 41 can acquire an image along the thickness direction of the dust collection plate 21, or a cross-sectional image, to identify the dust accumulation thickness information on the dust collection plate 21. See [link to relevant documentation]. Figure 4 The dust accumulation layer 201 is shown. A second image recognition unit 42 is disposed on one or both sides of the dust collection structure 2 along its width direction. The second image recognition unit 42 can acquire surface images of the dust collection plate 21 to identify the dust accumulation area information on the dust collection plate 21. (See [reference]). Figure 5 The dust accumulation area 202 is shown. The first image recognition unit 41 and the second image recognition unit 42 can accurately identify the dust condition of the dust collection plate 21 from multiple dimensions, evaluate multiple areas, and provide accurate feedback. This enables accurate detection of the dust accumulation on the dust collection plate 21, timely cleaning of the dust collection structure 2, and effectively avoids problems such as low dust collection efficiency and secondary pollution caused by excessive dust.

[0057] Preferably, to save costs, the first image recognition unit 41 and the second image recognition unit 42 are provided on only one side, that is, the first image recognition unit 41 is provided on one side of the dust collection structure 2 along the length direction, and the second image recognition unit 42 is provided on one side of the dust collection structure 2 along the width direction. The first image recognition unit 41 and the second image recognition unit 42 are miniature high-definition cameras. The first image recognition unit 41 mainly identifies the thickness of the dust accumulation, and the second image recognition unit 42 mainly identifies the area of ​​the dust accumulation. See Appendix Figure 1 In this embodiment, the second image recognition unit 42 is located to the right of the rightmost dust collection plate 21. By recognizing the size of the dust accumulation area on the rightmost dust collection plate 21, the second image recognition unit 42 can infer the dust accumulation situation of the entire dust collection structure 2. For example, if the second image recognition unit 42 detects that the dust accumulation area on the rightmost dust collection plate 21 exceeds 2 / 3 of the dust collection plate 21 area, it can be inferred that the dust accumulation in the entire dust collection structure 2 is quite serious.

[0058] More preferably, the first image recognition unit 41 is positioned at the middle of the length direction of the dust collection module. The second image recognition unit 42 is positioned at the middle of the width direction of the dust collection module. This design allows the recognition range of the first image recognition unit 41 and the second image recognition unit 42 to cover a more comprehensive area.

[0059] In one alternative implementation, the automatic cleaning device 3 cleans the dust accumulation on the dust collection structure 2 by high-pressure air blowing and / or brush scraping. Compared with existing water cleaning, it can effectively avoid the safety hazards caused by water flow mixing with high-voltage electrode 6, avoid the danger that may be caused by high voltage electricity meeting water, and is safer. At the same time, it avoids the problem of the existing water washing process being cumbersome and inefficient due to the need to avoid high-voltage electrode 6.

[0060] In one alternative embodiment, the cleaning component 31 includes a cleaning roller 311 rotatable about its own central axis. When cleaning the dust collection structure 2, the cleaning roller 311 can be controlled to rotate at high speed about its own central axis, thereby greatly improving the cleaning power of the dust.

[0061] In one alternative implementation, such as Figure 1 and Figure 3 As shown, the air purification equipment also includes a dust blocking mechanism 5, which is installed in the purification duct. The dust blocking mechanism 5 has two sets, which are arranged on both sides of the dust collection structure 2 along the air flow direction. This is suitable for closing the purification duct when the automatic cleaning device 3 is working to prevent dust from being generated.

[0062] In the above embodiment, when the automatic cleaning device 3 is working, the two sets of dust-blocking mechanisms 5 located on the upper and lower sides of the dust collection structure 2 respectively close the purification air duct. In this way, a relatively closed cleaning space can be separated in the purification air duct. The purification air duct and the automatic cleaning device 3 are both located in the closed cleaning space. This can effectively prevent the dust on the dust collection plate 21 from overflowing from the air outlet and air inlet or falling onto other parts inside the housing 1 during the process of the automatic cleaning device 3 cleaning the dust on the dust collection structure 2, causing secondary dust and contaminating other parts, thus improving the user experience.

[0063] In one optional embodiment, the dust-blocking mechanism 5 is a rotatable open and close air duct structure. The dust-blocking mechanism 5 includes a fixed baffle 501 and a rotating baffle 502. When the fixed baffle 501 and the rotating baffle 502 overlap, the purification air duct is in the open state. When the fixed baffle 501 and the rotating baffle 502 do not overlap at all, the purification air duct is in the closed state.

[0064] In one optional embodiment, the dust-blocking mechanism 5 includes a fixed baffle 501, a rotating baffle 502, and a dust-blocking driving component. The fixed baffle 501 is a fan-shaped structure fixedly disposed within the housing 1. The rotating baffle 502 is a fan-shaped structure coaxially disposed with the fixed baffle 501 and rotatably disposed on one side of the fixed baffle 501. The dust-blocking driving component is connected to the rotating baffle 502 and is adapted to drive the rotating baffle 502 to rotate between a misaligned position that is offset from the fixed baffle 501 to close the purification air duct and an overlapped position that coincides with the fixed baffle 501 to open the purification air duct.

[0065] In the above embodiments, the fixed baffle 501 and the rotating baffle 502, when positioned at a offset location, can form a completely enclosed disc structure to seal the purification air duct. When the fixed baffle 501 and the rotating baffle 502 are aligned, they can form a semi-enclosed disc structure to open the purification air duct. By employing the above-described rotating opening and closing method, the purification air duct can be opened or closed, making the opening and closing process simple and efficient.

[0066] For example, such as Figure 3 As shown, the disk is divided into six equal sectors, labeled A through F, with each sector corresponding to an angle of 60°. A, C, and E serve as fixed baffles 501. B, D, and F are selected as coaxially rotatable rotating baffles 502, positioned axially away from A, C, and E by a distance equal to the thickness of the disk. These baffles are positioned above or below A, C, and E, offset axially to allow rotation relative to the fixed baffles 501 and to either offset from or overlap with them. When opening the air duct, B, D, and F are rotated 60° in any direction, clearing their original positions. When closing, they are rotated 60° in the opposite direction to reset, closing the passage. Both sets of dust-blocking mechanisms 5 operate in the same manner, opening and closing simultaneously.

[0067] In this embodiment, the dust-blocking mechanism 5 includes an upper dust-blocking mechanism 51 and a lower dust-blocking mechanism 52 located on the upper and lower sides of the dust collection structure 2. More specifically, the upper dust-blocking mechanism 51 is located above the automatic cleaning device 3.

[0068] In one optional embodiment, the lower dust-blocking mechanism 52 can be pulled out or pushed into the housing 1. During the cleaning process, dust will fall onto the lower dust-blocking mechanism 52 under the action of gravity, and the lower dust-blocking mechanism 52 serves to collect the cleaning dust. Therefore, after the automatic cleaning device 3 completes the cleaning program, the lower dust-blocking mechanism 52 can be pulled out to clean the cleaning dust collected on it, making the dust removal method simple and convenient.

[0069] In another optional embodiment, the side wall of the housing 1 is provided with a cleaning port that can be opened or closed, located between the lower dust blocking mechanism 52 and the dust collection structure 2. Under normal conditions, the cleaning port is in a closed state to ensure the airtightness of the purification duct. After cleaning the dust collection structure 2, the cleaning port can be opened, and the dust collected on the lower dust blocking mechanism 52 can be cleaned out with an auxiliary tool, simplifying the structure.

[0070] In another optional embodiment, a collection box is provided inside the housing 1, located below the lower dust-blocking mechanism 52, with an open top to collect cleaning dust when the dust-blocking mechanism 52 is open. When the dust-blocking mechanism 52 is opened after cleaning, the dust collected on the lower dust-blocking mechanism 52 falls into the collection box from the original position of the rotating baffle 502, i.e., the opening of the lower dust-blocking mechanism 52. Preferably, the rotating baffle 502 is positioned above the fixed baffle 501, and when the lower dust-blocking mechanism 52 is open, the rotating baffle 502 also scrapes and pushes the dust off the fixed baffle 501. Users can periodically remove the collection box to empty the collected dust and clean the box, which is very convenient.

[0071] In one alternative implementation, such as Figure 1 and Figure 2 As shown, the length direction of the dust collection structure 2 is defined as the first direction. Figure 1 In the X direction, the width direction of the dust collection structure 2 is the second direction, i.e. Figure 1 In the Y direction, the height direction of dust collection structure 2 is the third direction, i.e. Figure 1The automatic cleaning device 3 also includes a sliding base 32, a movable slider 33, and a first driving component. The sliding base 32 is adapted to be slidably connected to the housing 1 along the first direction. The sliding base 32 has a frame structure and includes two guide rods arranged opposite each other, with the extension direction of the guide rods parallel to the second direction. The sliding base 32 also includes two connecting rods connected to the two ends of the two guide rods. The two connecting rods and the two guide rods enclose a frame structure. A slide rail 10 adapted to be slidably connected to the connecting rods is provided inside the housing 1. The slide rail 10 extends along the first direction, i.e., the X direction. The movable slider 33 is movably arranged on the guide rod along the length direction of the guide rod. The cleaning component 31 is connected to the movable slider 33 and is adapted to guide the cleaning component 31 to move along the second direction through the movable slider 33. The cleaning component 31 and the movable slider 33 are rotatably connected through a horizontal rotating shaft 313. The first driving component is adapted to drive the cleaning component 31 to rotate about the horizontal rotating shaft 313 as the center of rotation in the plane containing the second and third directions. When the automatic cleaning device 3 automatically cleans the dust collection structure 2, the automatic cleaning device 3 can translate in the first direction, i.e., the X direction, and can rotate in the (Y, Z) plane to extend into the space between the dust collection plates 21. Furthermore, the cleaning component 31 can also move in the (X, Y) plane, i.e., translate in the second direction, to clean the entire surface of the dust collection plate 21, achieving thorough cleaning of the dust collection structure 2 without any dead angles. This effectively avoids problems such as low dust collection efficiency, malfunctions, bacterial growth, secondary dust emission, and corrosion of the dust collection plate 21 caused by dust accumulation.

[0072] In one optional embodiment, the cleaning component 31 includes a second drive component 312 and a cleaning roller 311. Two horizontal rotating shafts 313 are fixedly disposed on both sides of the second drive component 312. Optionally, the second drive component 312 includes a mounting housing, and the horizontal rotating shafts 313 are fixedly disposed on the side walls of the mounting housing. The length of the cleaning roller 311 is not less than the height of the dust collection plate 21, ensuring that when the cleaning roller 311 extends into the space between the plates, it can reach every height position of the dust collection plate 21 in the height direction. The cleaning roller 311 is fixedly connected to the output shaft of the second drive component 312, which is adapted to drive the cleaning roller 311 to rotate around its own central axis to improve the cleaning effect on the dust collection plate 21. Optionally, the second drive component 312 is a rotary motor.

[0073] In one optional embodiment, the first driving component includes a first power member and a drive gear 34. The first power member is fixedly mounted on the sliding base 32. The first power member can be a stepper motor. The drive gear 34 is fixedly mounted on the output shaft of the first power member, and the first power member is adapted to drive the drive gear 34 to rotate in the plane containing the second and third directions. A driven gear 314 or meshing teeth adapted to drive the drive gear 34 are fixedly mounted on the cleaning component 31. The first power member drives the cleaning component 31 to rotate in the plane containing the second and third directions through the meshing and transmission of the drive gear 34 and the driven gear 314 or meshing teeth. By using the above-mentioned gear meshing structure as an intermediate transmission component to drive the cleaning component 31 to rotate in the (Y, Z) plane, the movement of the entire cleaning component 31 is more stable, the transmission is more accurate and reliable, and the control precision is higher.

[0074] In the above embodiment, the driven gear 314 is fixed to the mounting housing of the second drive component 312, for example, by welding or screw connection. Alternatively, the end wall of the mounting housing of the second drive component 312 is provided with a plurality of meshing teeth, that is, the meshing teeth are integrally formed with the mounting housing.

[0075] In one optional embodiment, a brush is provided on the outer periphery of the cleaning roller 311, which is adapted to scrape and clean the dust on the dust collection plate 21 by controlling the rotation of the cleaning roller 311 and / or its movement in a second direction; and / or, the cleaning roller 311 has a high-pressure air chamber connected to a high-pressure device, and multiple spray holes are provided on the peripheral wall of the cleaning roller 311, which is adapted to spray high-pressure airflow outward from the spray holes on the outer periphery of the cleaning roller 311 to clean the dust on the dust collection plate 21. Compared with the existing water washing method for cleaning the dust collection plate 21, the method of cleaning by blowing air and scraping dust by brush can effectively avoid the safety hazards caused by the mixing of water flow and high-voltage electrode 6, which is safer. At the same time, it avoids the problems of the existing water washing method, which requires avoiding the high-voltage electrode 6, resulting in a cumbersome and inefficient cleaning process.

[0076] In a preferred embodiment, the cleaning roller 311 is a hollow rod-shaped structure with an internal cavity. Multiple rows of spray holes are spaced circumferentially on the cleaning roller 311, and multiple rows of bristles are spaced circumferentially on the outer periphery of the cleaning roller 311. The multiple rows of bristles and multiple rows of spray holes are alternately arranged. The dust accumulated on the dust collection plate 21 is cleaned by a combination of air blowing and physical scraping, resulting in a better cleaning effect.

[0077] In one optional embodiment, the automatic cleaning device 3 further includes a third driving component 35 adapted to drive the movable slider 33 to move along the second direction. A slider conveyor belt 36 is provided on the guide rod, and the movable slider 33 is fixedly mounted on the slider conveyor belt 36. The third driving component 35 drives the movable slider 33 to move by rotating the slider conveyor belt 36. The third driving component 35 can be a track drive motor fixedly mounted on the sliding base 32. Alternatively, in another embodiment, the movable slider 33 is slidably connected to the guide rod, and the third driving component 35 includes a drive shaft that can extend and retract along the second direction. The drive shaft is connected to the movable slider 33 to drive the cleaning component 31 to move along the second direction. The third driving component 35 can be a cylinder or an electric push rod fixedly mounted on the sliding base 32.

[0078] In one optional embodiment, the air purification device further includes a high-voltage electrode 6, an ozone reduction mesh 7, and a fan 8. The high-voltage electrode 6 is disposed within the purification duct between the air inlet and the dust collection structure 2, and is used to ionize air to generate free charges. Optionally, the high-voltage electrode 6 is a needle-tip electrode that applies high voltage, capable of ionizing air to generate free charges. Multiple dust collection plates 21 are sequentially and alternately connected to the high-voltage electrode 6 and the ground electrode. For example, the multiple dust collection plates 21 are sequentially connected to the deflection electrode from left to right in the order of high-voltage electrode 6, ground electrode, high-voltage electrode 6, ground electrode... The ozone reduction mesh 7 is disposed within the purification duct between the dust collection structure 2 and the air outlet, and is used to adsorb ozone in the flowing air. The ozone reduction mesh 7 can eliminate ozone carried by the air due to the generation of free charges. The fan 8 is disposed within the purification duct and is adapted to drive air in from the air inlet and out from the air outlet along the purification duct.

[0079] In this embodiment, the air purification device is a multi-functional air purifier.

[0080] The working principle of the air purification device in this embodiment is as follows:

[0081] Air containing pollutants enters the housing 1 through the inlet, passes through the lower dust-blocking mechanism 52, and flows to the area near the high-voltage electrode 6. In the area near the high-voltage electrode 6, particles are adsorbed and ionized by the high-voltage needle tip electrode, generating free charges. After the pollutant particles have adsorbed the charges, they enter the electric field deflection area where the dust collection structure 2 is located. Since the electric field is a flat plate type electric field in the X direction, the charged pollutant particles will collide with the dust collection plate 21 in this area due to the electric field deflection effect and accumulate on the surface of the dust collection plate 21. Subsequently, the clean air continues to rise, passes through the upper dust-blocking mechanism 51 and the ozone reduction net 7, which can remove residual ozone. Finally, the clean air flows out through the outlet under the drive of the fan 8.

[0082] Combination Figure 1 , Figure 2 and Figures 6 to 8 As shown, according to an embodiment of the present invention, a cleaning method for cleaning the air purification device of any of the above embodiments is also provided, see [link to documentation]. Figure 6 As shown, the cleaning method includes the following steps:

[0083] Step S101: Receive the start cleaning command and control the automatic cleaning device 3 to start.

[0084] Step S102: Control the cleaning component 31 of the automatic cleaning device 3 to extend into the space between the dust collection plates 21 at the preset working position, and control the cleaning component 31 to move along the width direction of the dust collection structure 2 to clean the entire surface of the dust collection plate 21.

[0085] Step S103: Control the cleaning component 31 to return to its original position, and control the automatic cleaning device 3 to move to the next working position to continue cleaning the dust collection structure 2.

[0086] After the dust collection structure 2 has finished collecting dust, the automatic cleaning device 3 cleans the dust collection structure 2, effectively solving the problems of low efficiency, secondary pollution and bacterial growth, and secondary dust generation caused by the inability to clean in time.

[0087] In one optional implementation, receiving a cleaning start command includes receiving a time signal, or receiving a user trigger signal, or receiving a feedback signal indicating that the dust accumulation on the dust collection plate 21 is greater than a preset dirt threshold.

[0088] Specifically, the automatic cleaning device 3 can be set to clean once at a predetermined interval. The automatic cleaning device 3 is equipped with a timing unit that sends a timeout signal every month. For example, every month, the timing unit sends a timeout signal to the control unit of the automatic cleaning device 3, which then controls the automatic cleaning device 3 to start cleaning the dust collection structure. In another embodiment, the automatic cleaning device 3 can also clean according to user instructions. For example, if the air purifier has a cleaning button, pressing the button will start the automatic cleaning device 3. In yet another embodiment, a detection mechanism can be used to identify and detect the dust accumulation on the dust collection plate 21. When the dust accumulation is determined to be severe, the automatic cleaning device 3 will automatically start and clean the dust collection structure 2, resulting in a higher level of intelligence. The automatic cleaning device 3 in this embodiment can be controlled individually or in any combination of the above three implementation methods.

[0089] In one alternative implementation, combined with Figure 1 , Figure 2 and Figure 7 As shown, receiving a start cleaning command and controlling the automatic cleaning device 3 to start includes the following steps:

[0090] Step S1011: Use the first image recognition unit 41 to acquire a cross-sectional image of the dust collection plate 21, and use the second image recognition unit 42 to acquire a surface image of the dust collection plate 21;

[0091] Step S1012: Perform grayscale processing on the cross-sectional image and the surface image respectively to obtain the cross-sectional grayscale image and the surface grayscale image;

[0092] Step S1013: Based on the cross-sectional grayscale image, edge detection is used to identify the boundary between the ash layer 201 and the dust collection plate 21, and the thickness d1 of the ash layer 201 is calculated.

[0093] Step S1014: Based on the surface grayscale image, edge detection is used to identify the boundary between the dust accumulation area 202 and the dust collection plate 21, and the coverage area s1 of the dust accumulation area 202 is calculated.

[0094] Step S1015: If it is determined that the thickness d1 of the dust accumulation layer 201 is greater than or equal to the first set threshold, or the coverage area s1 of the dust accumulation area 202 is greater than or equal to the second set threshold, then control the automatic cleaning device 3 to start.

[0095] In step S1012 above, the cross-sectional image and surface image obtained in step S1011 are analyzed, and the Binary algorithm in grayscale conversion is used to convert the cross-sectional image and surface image into grayscale images. By using computer image recognition to automatically control the automatic cleaning device 3, the problem of dust quantity identification and automatic cleaning is solved. This enables automatic cleaning by the automatic cleaning device 3, freeing up manpower, improving product quality, and ensuring the elimination of secondary pollution and bacterial growth.

[0096] In step S1015: The first set threshold and the second set threshold can be specific thresholds, such as the first set threshold being 1 cm, 2 cm, 3 cm, etc., or the second set threshold being 10 cm. 2 20 cm 2 30 cm 2 Alternatively, in other embodiments, the thickness of the dust collection plate 21 is set to d0, the area to s0, the first set threshold is a%*d0, and the fixed area threshold is b%*s0.

[0097] For example, the first set threshold is 5% * d0, meaning that the automatic cleaning device 3 needs to be activated when the dust accumulation thickness exceeds five percent of the total thickness of the dust collection plate 21; the second set threshold is 20% * s0, meaning that the automatic cleaning device 3 is activated when the dust accumulation area exceeds one-fifth of the total area of ​​the dust collection plate 21. Alternatively, it can be said that the automatic cleaning device 3 is activated when it is determined that d1 / d0 ≥ 0.05 or s1 / s0 ≥ 0.2.

[0098] In one alternative implementation, combined with Figure 1 , Figure 2 and Figure 8 As shown, after receiving the start cleaning command, the following steps are performed before the automatic cleaning device 3 is started:

[0099] Step S200: Control the dust blocking mechanism 5 to close the purification air duct to prevent dust from being generated; after cleaning is completed, control the dust blocking mechanism 5 to open the purification air duct.

[0100] In one alternative implementation, after receiving the cleaning start command, the following steps are further performed:

[0101] Step S201: Control the automatic cleaning device 3 to move along the first direction to the preset start position near one end of the dust collection structure 2.

[0102] Step S202: Control the cleaning component 31 to rotate from the second direction to the third direction so as to extend into the space between the dust collection plates 21 located at the preset start position.

[0103] Step S203: Control the cleaning roller 311 of the cleaning component 31 to rotate around its own central axis, and at the same time control the cleaning component 31 to move from the preset starting position to the other end along the width direction of the dust collection plate 21, so as to clean the entire surface of the dust collection plate 21.

[0104] Step S204: After cleaning the entire surface of the dust collection plate 21, control the cleaning component 31 to retract to the initial position along the second direction, and control the cleaning component 31 to rotate from the third direction to the second direction to realize the return of the automatic cleaning device 3.

[0105] Step S205: Control the automatic cleaning device 3 to move along the first direction to the space between the dust collection plates 21 of the next work station, and repeat steps S202 to S204.

[0106] Step S206: During the cleaning process of the dust collection structure 2, if it is determined that the number of times the automatic cleaning device 3 moves along the first direction has reached the set number, the cleaning program is stopped after the automatic cleaning device 3 is returned to its original position, and the user is notified.

[0107] In step S201, cleaning can be started from the leftmost end of the dust collection structure 2 as the starting position, and the cleaning is performed sequentially from left to right along the first direction. In step S204, each component is returned to its original position to prevent the automatic cleaning device 3 from interfering with the dust collection structure 2 when it moves to the next working position. In step S206, when it is determined that the automatic cleaning device 3 has moved a set number of times along the first direction, it indicates that all dust collection plates 21 of the entire dust collection structure 2 have been cleaned. At this time, the automatic cleaning device 3 is controlled to reset and the automatic cleaning program ends. At the same time, a reminder is issued to the user to prompt the user to clean the dust blocking mechanism 52 or the dust collection box in time.

[0108] In this embodiment, the movement of the cleaning component 31 and the cleaning roller 311 is improved, the path is shortened and the efficiency is high. At the same time, the length of the cleaning roller 311 is increased so that it can extend into the gap between the dust collection plates 21, and it can also move in a straight line along the second direction and the third direction, cleaning a larger area and with higher cleaning efficiency.

[0109] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air purification device, characterized in that, include: The housing (1) is provided with an air inlet and an air outlet, and a purification air duct is formed between the air inlet and the air outlet; A dust collection structure (2) is provided in the purification air duct, and the dust collection structure (2) includes a plurality of dust collection plates (21) arranged in a linear interval. Automatic cleaning device (3) is movably disposed above the dust collection structure (2) along the length direction of the dust collection structure (2) for cleaning the dust collection structure (2). The automatic cleaning device (3) includes a cleaning component (31) with multiple degrees of freedom. The cleaning component (31) has a cleaning state in which it can extend into the gap between the dust collection plates (21) and move along the width direction of the dust collection structure (2), and a returning state in which it can be reset and retracted above the dust collection structure (2). The air purification equipment also includes: Dust-blocking mechanism (5) is provided in the purification air duct. The dust-blocking mechanism (5) has two sets. The two sets of dust-blocking mechanisms (5) are respectively arranged on both sides of the dust collection structure (2) along the air flow direction. It is suitable for closing the purification air duct when the automatic cleaning device (3) is working to prevent dust from rising. The dust-blocking mechanism (5) includes: The fixed baffle (501) is a fan-shaped structure fixedly installed inside the housing (1); The rotating baffle (502) is a fan-shaped structure coaxially arranged with the fixed baffle (501) and rotatably arranged on one side of the fixed baffle (501); The dust-blocking drive component is connected to the rotating baffle (502) and is adapted to drive the rotating baffle (502) to rotate between a misaligned position that is offset from the fixed baffle (501) to close the purification air duct and an overlapping position that coincides with the fixed baffle (501) to open the purification air duct. The length direction of the dust collection structure (2) is defined as the first direction, the width direction as the second direction, and the height direction as the third direction. The automatic cleaning device (3) further includes: A sliding base (32) is adapted to be slidably connected to the housing (1) along a first direction. The sliding base (32) is a frame structure. The sliding base (32) includes two guide rods arranged opposite to each other. The extension direction of the guide rods is parallel to the second direction. A movable slider (33) is movably disposed on the guide rod along the length direction of the guide rod. The cleaning component (31) is connected to the movable slider (33) and is adapted to guide the cleaning component (31) to move along the second direction through the movable slider (33). The first driving component, wherein the cleaning component (31) and the movable slider (33) are rotatably connected via a horizontal rotating shaft (313), is adapted to drive the cleaning component (31) to rotate about the horizontal rotating shaft (313) in the plane containing the second direction and the third direction.

2. The air purification device according to claim 1, characterized in that, The air purification equipment also includes: An image recognition device is used to collect image information of the dust collection plate (21) and obtain dust accumulation information of the dust collection plate (21) based on the image information; The control unit is used to determine whether the degree of dust accumulation on the dust collection plate (21) is greater than the preset dirt threshold based on the dust accumulation information obtained by the image recognition device, and to control the automatic cleaning device (3) to start when it is determined that the degree of dust accumulation on the dust collection plate (21) is greater than the preset dirt threshold, so as to clean the dust collection structure (2).

3. The air purification device according to claim 2, characterized in that, The image recognition device includes: The first image recognition unit (41) is disposed on one or both sides of the dust collection structure (2) along the length direction, and is used to identify the dust accumulation thickness information on the dust collection plate (21); The second image recognition unit (42) is disposed on one or both sides of the dust collection structure (2) along the width direction, and is used to identify the dust accumulation area information on the dust collection plate (21).

4. The air purification device according to any one of claims 1 to 3, characterized in that, The automatic cleaning device (3) cleans the dust accumulation on the dust collection structure (2) by high-pressure air blowing and / or brush scraping.

5. The air purification device according to claim 1, characterized in that, The dust blocking mechanism (5) includes an upper dust blocking mechanism (51) and a lower dust blocking mechanism (52) located on the upper and lower sides of the dust collection structure (2). The lower dust-blocking mechanism (52) can be pulled out or pushed into the housing (1); Alternatively, the side wall of the housing (1) is provided with an openable or closable cleaning port, which is located between the lower dust blocking mechanism (52) and the dust collection structure (2); Alternatively, a collection box is provided inside the housing (1), the collection box is located below the lower dust blocking mechanism (52), and the top of the collection box is open, which is suitable for collecting cleaning dust when the dust blocking mechanism (5) is opened.

6. The air purification device according to claim 1, characterized in that, The cleaning component (31) includes: The second drive component (312) has two horizontal rotating shafts (313) which are fixedly disposed on both sides of the second drive component (312); A cleaning roller (311) has a length not less than the height of the dust collection plate (21). The cleaning roller (311) is fixedly connected to the output shaft of the second driving component (312). The second driving component (312) is adapted to drive the cleaning roller (311) to rotate around its own central axis.

7. The air purification device according to claim 6, characterized in that, The first driving component includes: The first power component is fixedly mounted on the sliding base (32); The drive gear (34) is fixedly mounted on the output shaft of the first power member, and the first power member is adapted to drive the drive gear (34) to rotate in the plane containing the second direction and the third direction; The cleaning component (31) is fixedly provided with a driven gear (314) or meshing teeth suitable for transmission cooperation with the driving gear (34). The first power component drives the cleaning component (31) to rotate in the plane where the second direction and the third direction are located through the meshing transmission cooperation between the driving gear (34) and the driven gear (314) or meshing teeth.

8. The air purification device according to claim 6, characterized in that, The outer periphery of the cleaning roller (311) is provided with a brush, which is adapted to scrape and clean the dust on the dust collection plate (21) by controlling the rotation of the cleaning roller (311) and / or moving in the second direction; And / or, the cleaning roller (311) has a high-pressure air chamber connected to the high-pressure device, and the peripheral wall of the cleaning roller (311) is provided with a plurality of spray holes, which are suitable for cleaning the dust on the dust collection plate (21) by controlling the spray holes on the outer periphery of the cleaning roller (311) to spray high-pressure airflow outward.

9. The air purification device according to claim 1, characterized in that, The automatic cleaning device (3) further includes a third driving component (35) adapted to drive the movable slider (33) to move along the second direction; A slider conveyor belt (36) is provided on the guide rod, and the movable slider (33) is fixedly mounted on the slider conveyor belt (36). The third driving component (35) drives the slider conveyor belt (36) to rotate and moves the movable slider (33). Alternatively, the movable slider (33) is slidably connected to the guide rod, and the third drive component (35) includes a drive shaft that can be telescopically moved in a second direction, the drive shaft being connected to the movable slider (33).

10. The air purification device according to any one of claims 1 to 3, characterized in that, The air purification equipment also includes: A high-voltage electrode (6) is disposed in the purification duct between the air inlet and the dust collection structure (2). The high-voltage electrode (6) is used to ionize the air to generate free charge. Multiple dust collection plates (21) are sequentially and alternately connected to the high-voltage electrode (6) and the ground electrode. Ozone reduction mesh (7) is installed in the purification duct between the dust collection structure (2) and the air outlet to adsorb ozone in the air flowing through it. The fan (8) is installed in the purification duct and is suitable for driving air to flow in from the air inlet and out from the air outlet along the purification duct.

11. A cleaning method for cleaning the air purification device according to any one of claims 1 to 10, characterized in that, The cleaning method includes: Receive the start cleaning command and control the automatic cleaning device (3) to start; The cleaning component (31) of the automatic cleaning device (3) is controlled to extend into the space between the dust collection plates (21) at the preset working position, and the cleaning component (31) is controlled to move along the width direction of the dust collection structure (2) to clean the entire surface of the dust collection plate (21). Control the cleaning component (31) to return to its original position, and control the automatic cleaning device (3) to move to the next working position to continue cleaning the dust collection structure (2).

12. The cleaning method according to claim 11, characterized in that, The receiving of the cleaning start command includes: The system receives a time signal, or a user trigger signal, or a feedback signal indicating that the dust accumulation on the dust collection plate (21) is greater than the preset dirt threshold.

13. The cleaning method according to claim 11, characterized in that, The process of receiving the start cleaning command and controlling the automatic cleaning device (3) to start includes the following steps: The first image recognition unit (41) is used to acquire the cross-sectional image of the dust collection plate (21), and the second image recognition unit (42) is used to acquire the surface image of the dust collection plate (21); The cross-sectional image and the surface image are converted to grayscale to obtain a cross-sectional grayscale image and a surface grayscale image, respectively. Based on the cross-sectional grayscale image, edge detection is used to identify the boundary between the ash layer (201) and the dust collection plate (21), and the thickness d1 of the ash layer (201) is calculated. Based on the surface grayscale image, edge detection is used to identify the boundary between the ash accumulation layer (201) and the dust collection plate (21), and the coverage area s1 of the ash accumulation area (202) is calculated; If it is determined that the thickness d1 of the dust accumulation layer (201) is greater than or equal to the first set threshold, or the coverage area s1 of the dust accumulation area (202) is greater than or equal to the second set threshold, then the automatic cleaning device (3) is controlled to start.

14. The cleaning method according to claim 11, characterized in that, After receiving the start cleaning command, the automatic cleaning device (3) is controlled to perform the following steps before starting: The dust-blocking mechanism (5) closes the purification air duct to prevent dust from being generated; After cleaning is completed, control the dust blocking mechanism (5) to open the purification air duct.

15. The cleaning method according to claim 11, characterized in that, After receiving the cleaning start command, the following steps are executed: Step S201: Control the automatic cleaning device (3) to move along the first direction to a preset start-up position close to one end of the dust collection structure (2); Step S202: Control the cleaning component (31) to rotate from the second direction to the third direction so as to extend into the space between the dust collection plates (21) located at the preset start position; Step S203: Control the cleaning roller (311) of the cleaning component (31) to rotate around its own central axis, and at the same time control the cleaning component (31) to move from the preset starting position to the other end along the width direction of the dust collection plate (21) to clean the entire surface of the dust collection plate (21); Step S204: After cleaning the entire surface of the dust collection plate (21), control the cleaning component (31) to retract to the initial position in the second direction, and control the cleaning component (31) to rotate from the third direction to the second direction to realize the return of the automatic cleaning device (3); Step S205: Control the automatic cleaning device (3) to move along the first direction to the space between the dust collection plates (21) of the next working position, and repeat steps S202 to S204; Step S206: During the cleaning process of the dust collection structure (2), if it is determined that the number of times the automatic cleaning device (3) moves along the first direction reaches the set number, the cleaning program is stopped after the automatic cleaning device (3) is returned to its original position, and the user is prompted.

Images