A self-cleaning air purification device and a filter module repair method thereof

Abstract

The present invention provides a self-cleaning air purification device and a method for repairing a filter module thereof. The filter module is arranged in a shell. A cleaning brush can be arranged in the shell so as to slide up and down, and the cleaning brush contacts the filter module so as to clean the surface of the filter module when the cleaning brush slides up and down. The filter module achieves a self-cleaning effect through the cleaning brush that moves up and down, which can avoid the inconvenience caused by dismantling and cleaning the filter module and reduce the maintenance cost of the self-cleaning air purification device. Moreover, by changing the sliding contact direction between the cleaning brush and the filter module, the degree of wrinkles on the corresponding side surface of the filter module is changed, so that the corresponding side surface of the filter module is smooth, thereby ensuring the filtering efficiency of the filter module and the cleaning efficiency of the cleaning brush. Any position of the corresponding side surface of the filter module can be effectively cleaned to prevent excessive accumulation of impurities in some positions that affect the filtering effect, thereby increasing the service life of the filter module.

Description

Technical Field

[0001] The present invention relates to the technical field of ship air purification, and in particular to a self-cleaning air purification device and a filter module repair method thereof. Background Art

[0002] A marine air purifier is a device that filters and purifies indoor air. Through its built-in filtration system, it removes pollutants such as dust particles, oil mist, bacteria, viruses, and harmful gases, thereby improving the air quality in the corresponding cabin and reducing harm to the human body.

[0003] In existing technology, after a period of use, a large amount of dust accumulates on the filter of an air purifier. This is particularly true on ships with high temperatures, high humidity, and poor air quality. Dust is more likely to accumulate on the filter and is difficult to clean. This accumulated dust can clog the filter, reducing the air output and air purification efficiency of the air purifier and increasing its energy consumption. Therefore, the filter must be regularly disassembled and cleaned, increasing the maintenance cost of the air purifier. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a self-cleaning air purification device and a filter module repair method thereof that overcome the above problems or at least partially solve the above problems. It can solve the problem that the filter device of the air purification device is easily clogged, thereby achieving the effect of improving the air purification efficiency, and can ensure the flatness of the filter device and increase the service life of the filter device.

[0005] Specifically, the present invention provides a self-cleaning air purification device, which includes:

[0006] a housing, the housing having an air inlet and an air outlet, and an air duct connecting the air inlet and the air outlet and extending in a transverse direction;

[0007] A filter device is vertically arranged in the housing, comprising a filter frame and a filter module; the filter frame has a square through-hole; the filter module is square and is arranged in the square through-hole; the square through-hole is located in the air duct;

[0008] A cleaning brush is slidably disposed in the housing and is located on the upstream side of the filter device; the cleaning brush contacts the filter module to clean the surface of the filter module when the cleaning brush slides up and down; and

[0009] The filter frame is rotatably mounted in the shell around a horizontal axis extending in the transverse direction, and the filter module is rotatably mounted in the filter frame around a horizontal axis extending in the front-to-back direction, so that the cleaning brush is controlled to slide along a first direction of the filter module and contact one or the other of the two side surfaces of the filter module, or the cleaning brush is controlled to slide along a second direction of the filter module and contact one or the other of the two side surfaces of the filter module; the first direction slides and is perpendicular to the second direction, and the first direction is the length direction of the filter module, and the second direction is the width direction of the filter module.

[0010] Optionally, the self-cleaning air purification device further includes:

[0011] The wrinkle degree detection device is configured to detect the degree of concavity and convexity of the surface of the filter module to control the rotation of the filter frame according to the degree of concavity and convexity.

[0012] Optionally, the self-cleaning air purification device further includes:

[0013] Two slide rails, the slide rails are vertically arranged, and the two slide rails are respectively located on both sides of the filter module; and

[0014] Two give-way rails, each of which extends upward from the upper end of one of the slide rails and away from the filtering device;

[0015] The two ends of the cleaning brush are respectively installed on the two slide rails; the two give way rails are arranged so that: when the two ends of the cleaning brush are at the upper ends of the two give way rails, the cleaning brush is at the oblique upper side of the filter module.

[0016] Optionally, the self-cleaning air purification device further comprises two driving devices, each of which is connected to one end of the cleaning brush;

[0017] The wrinkle degree detection device includes two resistance detection devices configured to detect the force provided by the driving device to one end of the cleaning brush.

[0018] Optionally, each of the driving devices includes:

[0019] a first pulley, disposed at an upper end of one of the slide rails;

[0020] a second pulley, disposed at the lower end of one of the slide rails;

[0021] A transmission belt is wound around the first pulley and the second pulley, and the first pulley rotates to drive the transmission belt to move; one end of the cleaning brush is installed on the transmission belt to be raised and lowered under the drive of the transmission belt.

[0022] Optionally, each of the driving devices includes:

[0023] a transmission wheel rotatably disposed within the housing;

[0024] A transmission connecting rod, one end of which is hinged to the cleaning brush, and the other end of which is hinged to the transmission wheel at an eccentric position of the transmission wheel.

[0025] Optionally, the self-cleaning air purification device further includes:

[0026] a ventilation fan disposed in the housing and located downstream of the filter device, configured to force airflow to sequentially pass through the air inlet, the filter module, and the air outlet;

[0027] a mobile power supply, which is detachably mounted on the housing and electrically connected to the ventilation fan;

[0028] A dust collecting trough is located below the filter device and is used to receive dust cleaned from the filter device.

[0029] The present invention also provides a method for repairing a filter module for any of the above-mentioned self-cleaning air purification devices, comprising:

[0030] obtaining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush;

[0031] According to the degree of concave-convex, the filter frame is controlled to rotate around a horizontal axis extending in a transverse direction, and / or the filter module is controlled to rotate around a horizontal axis extending in a front-back direction so that the other surface of the filter module contacts the cleaning brush.

[0032] Optionally, the filter module repair method further comprises, before obtaining the degree of unevenness of the surface of the filter module in contact with the cleaning brush:

[0033] Obtaining the degree of dirtiness and blockage of the surface of the filter module that contacts the cleaning brush; specifically, using a pressure differential detection device to detect the pressure difference on both sides of the filter module, and if the pressure differential is greater than a preset difference, determining that the degree of dirtiness and blockage on the surface of the filter module has reached a preset dirtiness and blockage degree, and the surface of the filter module needs to be cleaned;

[0034] Controlling the cleaning brush to slide up and down according to the degree of dirt and blockage;

[0035] The step of obtaining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush includes:

[0036] After the cleaning brush slides up and down a preset number of times, obtaining the force applied by the driving device to the corresponding end of the cleaning brush;

[0037] The degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush is determined according to the acquired action force.

[0038] Optionally, determining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush according to the acquired action force includes:

[0039] When one of the two acting forces at both ends is greater than a preset value, it is determined that the concave-convex degree of the surface of the filter module in contact with the cleaning brush reaches a preset concave-convex degree.

[0040] In the self-cleaning air purification device and the filter module repair method thereof of the present invention, since it comprises a filter module and a cleaning brush, and the filter module is divided into a windward side and a leeward side, the cleaning brush contacts the windward side of the filter module and slides up and down to clean the filter module, thereby preventing the filter module from being clogged by impurities and dust, while keeping the filter holes of the filter module unobstructed, so that the filter module maintains a good filtering effect and improves the air purification efficiency of the self-cleaning air purification device. The filter module achieves a self-cleaning effect through the cleaning brush that moves up and down, which can avoid the inconvenience caused by dismantling and cleaning the filter module and reduce the maintenance cost of the self-cleaning air purification device.

[0041] In particular, since the filter device has a filter frame and a filter module, and since both the filter frame and the filter module are rotatable, one side of the filter module can be used for filtering first. After a certain period of use, when this side no longer meets the use requirements, the other side of the filter module can be replaced for filtering. Both sides of the filter module can be fully utilized for filtering, thereby increasing the service life of the filter module.

[0042] Moreover, as the filtration proceeds and the cleaning brush is used to clean, one side surface of the filter module becomes wrinkled, that is, becomes uneven. The present invention changes the degree of wrinkles on the corresponding side surface of the filter module by changing the sliding contact direction of the cleaning brush and the filter module, so that the corresponding side surface of the filter module is flat. In this way, the corresponding side surface of the filter module is as flat as possible, ensuring the filtration efficiency of the filter module and the cleaning efficiency of the cleaning brush. Any position of the corresponding side surface of the filter module can be effectively cleaned, preventing excessive accumulation of impurities in some positions from affecting the filtration effect, thereby increasing the service life of the filter module.

[0043] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0045] Figure 1 is a schematic structural diagram of a self-cleaning air purification device according to one embodiment of the present invention;

[0046] Figure 2 is a diagram showing the internal structure of a self-cleaning air purification device according to one embodiment of the present invention;

[0047] Figure 3 The present invention is a schematic flowchart of a method for repairing a filter module of a self-cleaning air purification device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] Refer to the following Figures 1 to 3 To describe the self-cleaning air purification device and the filter module repair method thereof of the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0049] Unless otherwise expressly defined or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be broadly interpreted. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0050] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0052] Figure 1 It is a schematic structural diagram of a self-cleaning air purification device, such as Figure 1 As shown, and reference Figure 2 An embodiment of the present invention provides a self-cleaning air purification device, which includes a housing 10, a ventilation fan 20, a filter device 30, and a cleaning brush 40.

[0053] The housing 10 has an air inlet 11 and an air outlet 12, as well as an air duct connecting the air inlet 11 and the air outlet 12 and extending in a transverse direction. A filter device 30 is vertically disposed within the housing 10. The filter device 30 includes a filter frame 31 and a filter module 32; the filter frame 31 has a square through-hole; the filter module 32 is square and disposed within the square through-hole; the square through-hole is located within the air duct. A cleaning brush 40 is slidably disposed within the housing 10 and is located upstream of the filter device 30; the cleaning brush 40 contacts the filter module 32 to clean the surface of the filter module 32 as the cleaning brush 40 slides up and down.

[0054] The filter frame 31 is rotatably mounted in the housing 10 around a horizontal axis extending in the transverse direction (left-right direction as shown in the figure), and the filter module 32 is rotatably mounted in the filter frame 31 around a horizontal axis extending in the front-to-back direction, so that the cleaning brush 40 is controlled to slide along the first direction of the filter module 32 and contact one or the other of the two side surfaces of the filter module 32, or the cleaning brush 40 is controlled to slide along the second direction of the filter module 32 and contact one or the other of the two side surfaces of the filter module 32; the first direction slides and is perpendicular to the second direction, and the first direction is the length direction of the filter module 32, and the second direction is the width direction of the filter module 32.

[0055] Specifically, the filter module 32 is divided into a windward side and a leeward side. When working, the ventilation fan 20 is started, and the ventilation fan 20 forms an airflow in the shell 10. The airflow passes through the shell 10 and passes through the filter module 32. The filter module 32 filters the airflow impurities, dust and other harmful substances. Impurities, dust and other harmful substances are filtered on the windward side of the filter module 32. The brush head of the cleaning brush 40 contacts the windward side of the filter module 32, and the cleaning brush 40 slides up and down to clean the filter module 32, thereby preventing the filter module 32 from being blocked by impurities and dust, and at the same time keeping the filter holes of the filter module 32 unobstructed, so that the filter module 32 maintains a good filtering effect, thereby improving the air purification efficiency of the self-cleaning air purification device.

[0056] In the embodiment of the present invention, since the filter module 32 is rotatably mounted within the filter frame 31 about a horizontal axis extending in the front-to-back direction, the filter module 32 can switch between the windward and leeward sides according to usage requirements. This allows one side of the filter module 32 to be used for filtration. After a certain period of use, if this side no longer meets the usage requirements, the other side of the filter module 32 can be replaced for filtration. This allows full utilization of both sides of the filter module 32 for filtration, thereby extending the service life of the filter module 32.

[0057] Furthermore, the filter module 32 achieves a self-cleaning effect through the up-and-down movement of the cleaning brush 40, which can avoid the inconvenience of removing and cleaning the filter module 32 and reduce the maintenance cost of the self-cleaning air purifier. The up-and-down movement of the cleaning brush 40 can also repair the wrinkles on the surface of the filter module 32 after causing wrinkles on the surface of the filter module 32. It should be noted that the formation of wrinkles is mainly due to the presence of impurities on the surface of the filter module 32 that are difficult to clean. During the up-and-down movement of the cleaning brush 40, the impurities cannot be removed and will severely squeeze the surface of the filter module 32, forming pits on the surface of the filter module 32 and correspondingly forming protrusions in other parts, making the surface of the filter module 32 uneven. By changing the movement direction of the cleaning brush 40 relative to the filter module 32, the direction of the cleaning force acting on the difficult-to-clean impurities is changed. This can remove the difficult-to-clean impurities and repair the uneven surface, thereby ensuring the quality of the surface of the filter module 32, ensuring the filtering effect, and increasing the service life of the filter module 32.

[0058] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the self-cleaning air purification device also includes two slide rails 51 and two give way rails 52. The slide rails 51 are arranged vertically, and the two slide rails 51 are respectively located on both sides of the filter module 32. Each give way rail 52 extends upward and away from the filter device 30 from the upper end of a slide rail 51. The two ends of the cleaning brush 40 are respectively mounted on the two slide rails 51; the two give way rails 52 are arranged so that: when the two ends of the cleaning brush 40 are at the upper ends of the two give way rails 52, the cleaning brush 40 is at the oblique upper side of the filter module 32. That is to say, the cleaning brush 40 moves up and down on the slide rail 51 when cleaning. When the filter module 32 needs to be rotated, the cleaning brush 40 moves to the upper end of the give way rail 52, so that the cleaning brush 40 will be away from the filter device 30, will not hinder the movement of the filter module 32, and ensures that the movement can be carried out.

[0059] In some embodiments of the present invention, the self-cleaning air purification device further includes two driving devices, each of which is connected to one end of the cleaning brush 40.

[0060] Furthermore, the self-cleaning air purifier further includes a wrinkle detection device configured to detect the degree of surface unevenness of the filter module 32, thereby controlling the rotation of the filter frame 31 based on the degree of unevenness. For example, the wrinkle detection device includes two resistance detection devices configured to detect the force applied by the driving device to one end of the cleaning brush 40.

[0061] The degree of surface roughness of the filter module 32 affects the force acting on both ends of the cleaning brush 40. The magnitude of the force acting on the filter module 32 provides a relatively accurate measure of the surface roughness. It should also be noted that surface roughness of the filter module 32 refers not only to deformation of the filter module 32 itself but also to any bumps on the filter module 32 that are difficult to clean, resulting from impurities.

[0062] In some embodiments of the present invention, each drive device includes a transmission wheel and a transmission connecting rod. The transmission wheel is rotatably disposed in the housing 10, and one end of the transmission connecting rod is hinged to the cleaning brush 40, and the other end is hinged to the eccentric position of the transmission wheel. The transmission wheel, the transmission connecting rod and the cleaning brush 40 constitute a crank slider mechanism, which can convert the circular motion of the transmission wheel into a linear motion of the cleaning brush 40 sliding up and down. Furthermore, the arrangement in which the other end of the transmission connecting rod is hinged to the eccentric position of the transmission wheel can enable the other end of the transmission connecting rod to rotate circumferentially around the transmission wheel. Furthermore, the greater the distance between the other end of the transmission connecting rod and the axis of the transmission wheel, the greater the amplitude of the up and down sliding of the cleaning brush 40 by the transmission wheel. Therefore, the distance between the other end of the transmission connecting rod and the axis of the transmission wheel can be adjusted according to the height of the filter module 32.

[0063] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, each driving device is a belt transmission mechanism, including a first pulley 61, a second pulley 62, a tensioning pulley 63 and a transmission belt 64. The first pulley 61 is arranged at the upper end of a slide rail 51. The second pulley 62 is arranged at the lower end of a slide rail 51. The transmission belt 64 is wound around the first pulley 61, the second pulley 62 and the tensioning pulley 63, and the first pulley 61 rotates to drive the transmission belt 64 to move; one end of the cleaning brush 40 is installed on the transmission belt 64 so as to be raised and lowered under the drive of the transmission belt 64. The tensioning pulley 63 is used to change the direction of the transmission belt 64 and to tension the transmission belt 64. The use of a belt transmission mechanism can occupy a smaller installation volume and the required movement space is also relatively small, making the structure of the self-cleaning air purification device compact.

[0064] In some embodiments of the present invention, the ventilation fan 20 is a cross-flow fan. Cross-flow fans offer installation flexibility and therefore require less installation space than other fans. Therefore, the use of a cross-flow fan can save a significant amount of installation space within the housing 10, allowing it to function within a limited, smaller installation space, thereby reducing the manufacturing volume of the housing 10. The reduced volume of the housing 10 can meet the requirements of lightweight design, thereby increasing the installation flexibility of the air purification device and thereby expanding the range of uses of the air purification device.

[0065] In some embodiments of the present invention, the ventilation fan 20 is an axial flow fan or a centrifugal fan.

[0066] In some embodiments of the present invention, the self-cleaning air purifier further includes a mobile power supply 70, which is detachably mounted on the housing 10 and electrically connected to the ventilation fan 20. Specifically, the provision of the mobile power supply 70 facilitates the mobility of the air purifier, thereby freeing the device from circuit constraints and thereby increasing its range of use. Furthermore, the detachable provision of the mobile power supply 70 facilitates battery replacement within the device.

[0067] In some embodiments of the present invention, a dust collection trough 35 is provided at the bottom of the housing 10. The dust collection trough 35 is located below the filter module 32 and is used to receive dust removed from the filter module 32. A diffuser assembly is provided at the air outlet 12. The diffuser assembly is capable of dispersing the purified air discharged from the air outlet 12 to the surrounding area, thereby rapidly improving the surrounding air quality. Furthermore, the diffuser assembly is a zigzag diffuser.

[0068] In other embodiments of the present invention, the housing 10 is provided with a mounting opening that communicates with the interior of the housing 10, and the filter device 30 is removably mounted within the housing 10 through the mounting opening. The housing 10 is provided with an access door that controls the opening and closing of the mounting opening. The housing 10 is provided with a plurality of rotating blocks. The rotating blocks are rotatably arranged and can be rotated to the front of the mounting opening so that when the access door closes the mounting opening, the rotating blocks can abut against the outside of the access door. Specifically, the rotating blocks are provided with a rotating shaft and are rotatably mounted on the housing 10 via the rotating shaft. The surface of the rotating block that can abut against the access door is an abutment surface, and the abutment surface is provided with rubber. The abutment surface has an interference fit with the access door, thereby increasing the abutment force exerted by the rotating block on the access door, thereby preventing the access door from shaking and increasing the stability of the access door when closed. Furthermore, the rotating block is provided with a flat block, which facilitates manual operation to rotate the rotating block.

[0069] In some embodiments of the present invention, a recess is provided on the outer wall of the housing 10, within which is located a fan switch. The fan switch is electrically connected to the ventilation fan 20 and is used to control the on and off of the ventilation fan 20. Specifically, the placement of the fan switch in the recess conceals the fan switch, thereby preventing it from being accidentally touched.

[0070] The present invention also provides a method for repairing the filter module 32 of the self-cleaning air purification device of any of the above embodiments, such as Figure 3 As shown, the method for repairing the filter module 32 of the self-cleaning air purification device includes:

[0071] In step S100, the degree of unevenness of the surface of the filter module 32 that contacts the cleaning brush 40 is obtained. The unevenness represents the flatness of the surface of the filter module 32. It may be caused by grooves or protrusions on the surface of the filter module 32, or by impurities on the surface of the filter module 32 that are difficult to clean, making the surface of the filter module 32 uneven.

[0072] In step S200 , the filter frame 31 is controlled to rotate around a horizontal axis extending in the transverse direction and / or the filter module 32 is controlled to rotate around a horizontal axis extending in the front-rear direction according to the degree of concavity and convexity so that the other surface of the filter module 32 contacts the cleaning brush 40 .

[0073] In an embodiment of the present invention, when the surface unevenness of the filter module 32 reaches a certain degree, it will affect the cleaning operation of the cleaning brush 40. By changing the moving direction of the cleaning brush 40 relative to the filter module 32, the surface of the filter module 32 is repaired to a certain extent, thereby improving the service life of the filter module 32.

[0074] In some embodiments of the present invention, before obtaining the degree of unevenness of the surface of the filter module 32 in contact with the cleaning brush 40, the method for repairing the filter module 32 of the self-cleaning air purification device further includes:

[0075] The degree of dirtiness and blockage of the surface of the filter module 32 that contacts the cleaning brush 40 is obtained. Specifically, a pressure differential detection device is used to detect the pressure differential across the filter module 32. If the pressure differential is greater than a preset differential value, it is determined that the degree of dirtiness and blockage on the surface of the filter module 32 has reached a preset degree, and the surface of the filter module 32 needs to be cleaned.

[0076] The cleaning brush 40 is controlled to slide up and down based on the degree of clogging. For example, when the degree of clogging exceeds a preset level, it indicates that the surface of the filter module 32 needs to be cleaned, and the cleaning brush 40 is controlled to move up and down to clean the surface of the filter module 32. Furthermore, during the up and down movement of the cleaning brush 40, the degree of unevenness of the surface of the filter module 32 in contact with the cleaning brush 40 can be determined based on the force applied to the cleaning brush 40.

[0077] Specifically, in some embodiments of the present invention, obtaining the degree of concavity and convexity of the surface of the filter module 32 in contact with the cleaning brush 40 includes:

[0078] After the cleaning brush 40 slides up and down a preset number of times, the force applied by the driving device to the corresponding end of the cleaning brush 40 is obtained. Because the cleaning brush 40 is mainly used to clean dirt before the preset number of times, it is subjected to a relatively large force. After the cleaning brush 40 has moved for a certain period of time, the dirt is basically cleaned. At this time, the degree of unevenness of the surface of the filter module 32 that contacts the cleaning brush 40 can be accurately determined based on the force applied to the cleaning brush 40.

[0079] The degree of concavity of the surface of the filter module 32 in contact with the cleaning brush 40 is determined based on the obtained force. For example, when one of the two forces at both ends is greater than a preset value, it is determined that the degree of concavity of the surface of the filter module 32 in contact with the cleaning brush 40 reaches the preset degree.

[0080] In some embodiments of the present invention, controlling the filter frame 31 to rotate about a horizontal axis extending in the transverse direction and / or the filter module 32 to rotate about a horizontal axis extending in the front-to-back direction according to the degree of concavity and convexity so that the other surface of the filter module 32 contacts the cleaning brush 40 includes:

[0081] Gets the duration for the concavity to reach the preset concavity.

[0082] If the duration is greater than or equal to the preset duration, and after the degree of unevenness reaches the preset degree, the filter frame 31 is controlled to rotate 90 degrees about a horizontal axis extending in the transverse direction, so that the cleaning brush 40 switches from sliding in the first direction along the filter module 32 and contacting the filter module 32 to sliding in the second direction along the filter module 32 and contacting the filter module 32. The duration until the degree of unevenness reaches the preset degree again is also obtained.

[0083] If the duration is greater than or equal to the preset duration, and after the degree of unevenness reaches the preset degree again, the filter frame 31 is controlled to rotate 90 degrees again about the horizontal axis extending in the transverse direction, so that the cleaning brush 40 switches from sliding in the second direction along the filter module 32 and contacting the filter module 32 to sliding in the first direction along the filter module 32 and contacting the filter module 32. The process returns to the above step of obtaining the duration for the degree of unevenness to reach the preset degree of unevenness.

[0084] If the duration is less than the preset duration and the degree of concavity and convexity reaches the preset degree of concavity and convexity again, the filter module 32 is controlled to rotate 180° around the horizontal axis extending in the front-to-back direction so that the other surface of the filter module 32 contacts the cleaning brush 40.

[0085] Get the duration for the concavity to reach the preset concavity again.

[0086] If the duration is greater than or equal to the preset duration, and after the degree of unevenness reaches the preset degree, the filter frame 31 is controlled to rotate 90 degrees about a horizontal axis extending in the transverse direction, so that the cleaning brush 40 switches from sliding in the first direction along the filter module 32 and contacting the filter module 32 to sliding in the second direction along the filter module 32 and contacting the filter module 32. The duration until the degree of unevenness reaches the preset degree again is also obtained.

[0087] If the duration is greater than or equal to the preset duration, and after the degree of unevenness reaches the preset degree again, the filter frame 31 is controlled to rotate 90 degrees again about the horizontal axis extending in the transverse direction, so that the cleaning brush 40 switches from sliding in the second direction along the filter module 32 and contacting the filter module 32 to sliding in the first direction along the filter module 32 and contacting the filter module 32. The process returns to the above step of obtaining the duration for the degree of unevenness to reach the preset degree of unevenness.

[0088] If the duration is less than the preset duration and the degree of concavity and convexity reaches the preset degree of concavity and convexity again, it is determined that the quality of the filter module 32 meets the replacement conditions and a warning message for replacing the filter module 32 is issued. After receiving the warning message, the filter module 32 can be replaced.

[0089] In the embodiment of the present invention, by wiping and cleaning the surface of the filter module 32 for a certain period of time and in different relative directions, the flatness and cleanliness of the surface of the filter module 32 are ensured, and the service life of the filter module 32 can be significantly improved, the cost can be reduced, and the energy saving effect is good.

[0090] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A self-cleaning air purification device, characterized in that: include: a housing, the housing having an air inlet and an air outlet, and an air duct connecting the air inlet and the air outlet and extending in a transverse direction; A filter device is vertically arranged in the housing, and includes a filter frame and a filter module; the filter frame has a square through hole; the filter module is square and is arranged in the square through hole; A cleaning brush is slidably disposed in the housing and is located on the upstream side of the filter device; the cleaning brush contacts the filter module to clean the surface of the filter module when the cleaning brush slides up and down; and The filter frame is rotatably mounted in the shell around a horizontal axis extending in the transverse direction, and the filter module is rotatably mounted in the filter frame around a horizontal axis extending in the front-to-back direction, so that the cleaning brush is controlled to slide along a first direction of the filter module and contact one or the other of the two side surfaces of the filter module, or the cleaning brush is controlled to slide along a second direction of the filter module and contact one or the other of the two side surfaces of the filter module; the first direction slides and is perpendicular to the second direction, and the first direction is the length direction of the filter module, and the second direction is the width direction of the filter module.

2. The self-cleaning air purification device according to claim 1, characterized in that: Also includes: The wrinkle degree detection device is configured to detect the degree of concavity and convexity of the surface of the filter module to control the rotation of the filter frame according to the degree of concavity and convexity.

3. The self-cleaning air purification device according to claim 2, characterized in that: Also includes: Two slide rails, the slide rails are vertically arranged, and the two slide rails are respectively located on both sides of the filter module; and Two give-way rails, each of which extends upward from the upper end of one of the slide rails and away from the filtering device; The two ends of the cleaning brush are respectively installed on the two slide rails; the two give way rails are arranged so that: when the two ends of the cleaning brush are at the upper ends of the two give way rails, the cleaning brush is at the oblique upper side of the filter module.

4. The self-cleaning air purification device according to claim 3, characterized in that: It also includes two driving devices, each of which is connected to one end of the cleaning brush; The wrinkle degree detection device includes two resistance detection devices configured to detect the force provided by the driving device to one end of the cleaning brush.

5. The self-cleaning air purification device according to claim 4, characterized in that: Each of the driving devices comprises: a first pulley, disposed at an upper end of one of the slide rails; a second pulley, disposed at the lower end of one of the slide rails; A transmission belt is wound around the first pulley and the second pulley, and the first pulley rotates to drive the transmission belt to move; one end of the cleaning brush is installed on the transmission belt to be raised and lowered under the drive of the transmission belt.

6. The self-cleaning air purification device according to claim 4, characterized in that: Each of the driving devices comprises: a transmission wheel rotatably disposed within the housing; A transmission connecting rod, one end of which is hinged to the cleaning brush, and the other end of which is hinged to the transmission wheel at an eccentric position of the transmission wheel.

7. The self-cleaning air purification device according to claim 1, characterized in that: Also includes: a ventilation fan disposed in the housing and located downstream of the filter device, configured to force airflow to sequentially pass through the air inlet, the filter module, and the air outlet; a mobile power supply, which is detachably mounted on the housing and electrically connected to the ventilation fan; A dust collecting trough is located below the filter device and is used to receive dust cleaned from the filter device.

8. A method for repairing a filter module of a self-cleaning air purification device according to any one of claims 1 to 7, characterized in that: include: obtaining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush; According to the degree of concave-convex, the filter frame is controlled to rotate around a horizontal axis extending in a transverse direction, and / or the filter module is controlled to rotate around a horizontal axis extending in a front-back direction so that the other surface of the filter module contacts the cleaning brush.

9. The filter module repair method according to claim 8, characterized in that: The self-cleaning air purification device further comprises two driving devices, each of which is connected to one end of the cleaning brush; Before obtaining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush, the method further includes: Obtaining a degree of dirtiness and blockage of a surface of the filter module in contact with the cleaning brush; Controlling the cleaning brush to slide up and down according to the degree of dirt and blockage; The step of obtaining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush includes: After the cleaning brush slides up and down a preset number of times, obtaining the force applied by the driving device to the corresponding end of the cleaning brush; The degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush is determined according to the acquired action force.

10. The filter module repair method according to claim 9, characterized in that: The step of determining the degree of concavity and convexity of the surface of the filter module in contact with the cleaning brush according to the acquired action force includes: When one of the two acting forces at both ends is greater than a preset value, it is determined that the concave-convex degree of the surface of the filter module in contact with the cleaning brush reaches a preset concave-convex degree.

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