Filtering device, air conditioning unit and control method

Abstract

This invention relates to the field of air conditioning technology, specifically providing a filtration device, an air conditioning unit, and a control method, aiming to solve the problems of material waste, high maintenance costs, and high labor costs associated with existing air conditioning unit filters. To this end, the filtration device of this invention includes: a mounting bracket; a first roll and a second roll, both rotatably mounted on the mounting bracket; a filter curtain, with both ends connected to the first and second rolls respectively, and a portion of the filter curtain wound around the second roll; and a drive mechanism configured to drive the first roll to rotate. By replacing the original modular filter with a rotatably mounted roll-type filter curtain on the bracket, and driving it via the drive mechanism, the filter curtain can be automatically replaced through winding, reducing maintenance and labor costs and minimizing material waste.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically providing a filtration device, an air conditioning unit, and a control method. Background Technology

[0002] Air conditioners are typically equipped with filters to initially filter the air entering the unit, removing large dust particles. After a period of use, a large amount of dust accumulates on the filters, affecting both the airflow and heat exchange efficiency. Furthermore, the accumulated dust can also promote bacterial growth, which is detrimental to the user's health.

[0003] Taking large air conditioning units as an example, the filters installed in the outdoor unit are modular, consisting of a frame and a filter. The filter is fixed to the frame, which is then used to install it into the air conditioner. During after-sales maintenance, technicians need to remove the old filter and replace it with a new one. This not only wastes the old filter frame, resulting in material waste, but also, for large air conditioning units, the filters require maintenance every few months, leading to high maintenance frequency and labor costs.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address at least one of the aforementioned problems in the prior art, namely, to resolve the issues of material waste, high maintenance costs, and high labor costs associated with the filters in existing air conditioning units, this application provides a filtration device comprising:

[0006] Mounting bracket;

[0007] A first spool and a second spool, both of which are rotatably mounted on the mounting bracket;

[0008] A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller;

[0009] A drive mechanism configured to drive the first drum to rotate.

[0010] In the preferred embodiment of the above-mentioned filtration device, the filtration device further includes a first drive shaft and a second drive shaft, the drive mechanism is connected to the first drive shaft, the first roll is sleeved on the first drive shaft and there is no relative rotation between the first roll and the first drive shaft, and the second roll is sleeved on the second drive shaft and there is no relative rotation between the second roll and the second drive shaft.

[0011] In a preferred embodiment of the above-mentioned filtration device, the drive mechanism includes a drive motor and a first transmission component, wherein the drive motor is connected to the first transmission shaft via the first transmission component.

[0012] In the preferred embodiment of the above-mentioned filtration device, the first transmission component includes a first driving wheel and a first driven wheel. The first driving wheel is directly connected to the first driven wheel or connected through one of a transmission chain and a transmission belt. The first driven wheel is connected to the first transmission shaft through a coupling.

[0013] In the preferred embodiment of the above-mentioned filtration device, a first positioning member is fitted at each end of the first drive shaft, and the first drum is located between the two first positioning members; and / or

[0014] A second positioning element is fitted at each end of the second drive shaft, and the second drum is located between the two second positioning elements.

[0015] In a preferred embodiment of the above-mentioned filtration device, the filtration device further includes a cleaning component, which is configured to clean the filter curtain at the first roll.

[0016] In a preferred embodiment of the above-mentioned filtration device, the cleaning component includes a cleaning roller brush, and the driving mechanism further includes a second transmission component. The driving mechanism is connected to the cleaning roller brush via the second transmission component, and the cleaning roller brush is rotatably disposed on one side of the first roll.

[0017] In the preferred embodiment of the above-mentioned filtration device, the second transmission component includes a second driving wheel and a second driven wheel, the second driving wheel and the second driven wheel are connected in a driving connection, and the second driven wheel is connected to the cleaning roller brush through one of a transmission chain and a transmission belt.

[0018] In a preferred embodiment of the above-mentioned filtration device, the cleaning component further includes a dust collection box, which is fixedly disposed on one side of the first roller, and the cleaning roller brush is rotatably disposed on the dust collection box.

[0019] In the preferred embodiment of the above-mentioned filtration device, the top surface of the dust collection box and the first side of the dust collection box near the first roller form a notch, the cleaning roller is located at the notch, a first brush is provided on the side of the top surface near the notch, and a second brush is provided on the side of the first side near the notch, and both the first brush and the second brush press against the filter curtain.

[0020] In a preferred embodiment of the above-mentioned filtration device, the top surface of the dust collection box away from the notch is rotatably connected to the top edge of the second side of the dust collection box via a pivot, wherein the second side is disposed opposite to the first side.

[0021] This application also provides an air conditioning unit, which includes the filtration device described in any of the above claims.

[0022] This application also provides a method for controlling a filtration device, the filtration device comprising:

[0023] Mounting bracket;

[0024] A first spool and a second spool, both of which are rotatably mounted on the mounting bracket;

[0025] A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller;

[0026] A drive mechanism, configured to drive the first drum to rotate,

[0027] The control method includes:

[0028] Obtain the pressure difference before and after the filter screen;

[0029] Determine whether the pressure difference is greater than or equal to a preset pressure difference threshold;

[0030] Based on the judgment result, the drive mechanism is selectively controlled to start operation so as to automatically replace the filter curtain.

[0031] In a preferred embodiment of the above control method, the filtration device further includes a cleaning component, which includes a cleaning roller brush. The driving mechanism is connected to the cleaning roller brush, and the cleaning roller brush is rotatably disposed on one side of the first roll. The step of "selectively controlling the driving mechanism to start operation based on the judgment result" further includes:

[0032] If the pressure difference is greater than or equal to the preset pressure difference threshold, then the cumulative number of times the filter curtain has been replaced is obtained;

[0033] Determine the magnitude of the cumulative number of replacements compared to the replacement number threshold;

[0034] If the cumulative number of replacements is less than the replacement threshold, the drive mechanism is controlled to start running so that the filter curtain is automatically replaced while the rolled-up filter curtain is cleaned.

[0035] In a preferred embodiment of the above control method, the control method further includes:

[0036] If the cumulative number of replacements is greater than or equal to the replacement threshold, then the cumulative number of times the filter curtain has been swapped is obtained;

[0037] Determine the magnitude of the cumulative number of swaps and the swap count threshold;

[0038] If the cumulative number of swaps is less than the swap count threshold, then a filter curtain swap message is sent.

[0039] If the cumulative number of swaps is greater than or equal to the swap count threshold, a filter curtain replacement message is sent.

[0040] In a preferred embodiment of the above control method, the control method further includes:

[0041] After controlling the start of the drive mechanism, update the value of the cumulative number of replacements, and / or

[0042] After sending the filter screen swap information, update the value of the cumulative swap count and control the value of the cumulative replacement count to zero; and / or

[0043] After sending the filter curtain replacement message, the cumulative number of swaps is reset to zero.

[0044] In a preferred embodiment of the above control method, after the step of "controlling the drive mechanism to start operation", the control method further includes:

[0045] Obtain the running time of the drive mechanism;

[0046] Determine the difference between the running time and a preset time threshold;

[0047] When the running time is greater than or equal to the preset time threshold, the drive mechanism is controlled to stop running.

[0048] In a preferred embodiment of the above control method, after the steps of "sending filter screen swap information" or "sending filter screen replacement information", the control method further includes:

[0049] Determine if the new filter screen is installed correctly;

[0050] If the filter screen is not installed correctly, an installation failure message will be issued.

[0051] In a preferred embodiment of the above control method, the cleaning component further includes a dust collection box, which is fixedly disposed on one side of the first roller. The cleaning roller brush is rotatably disposed in the dust collection box. After the steps of "issuing filter curtain swap information" or "issuing filter curtain replacement information", the control method further includes:

[0052] Determine whether the dust collection box has been cleaned;

[0053] When the dust collection box is not cleaned, a dust collection box cleaning prompt message is issued. The cleaning component also includes a dust collection box, which is fixedly disposed on one side of the first roller. The cleaning roller brush is rotatably disposed on the dust collection box. After the steps of "issuing filter curtain swap message" or "issuing filter curtain replacement message", the control method further includes:

[0054] Determine whether the dust collection box has been cleaned;

[0055] If the dust collection box is not cleaned, a prompt message to clean the dust collection box will be issued.

[0056] It should be noted that in the preferred technical solution of this application, by replacing the original modular filter screen with a roll-type filter screen that is rotatably mounted on the mounting bracket and driven by a drive mechanism, the filter screen can be automatically replaced by rewinding, which reduces maintenance and labor costs. Furthermore, the filter screen does not require a frame, which also reduces material waste.

[0057] Furthermore, by mounting the first and second drums onto the first and second drive shafts respectively, the two drums and the two drive shafts are made independent of each other, allowing the drums to be disassembled and replaced individually, thus reducing material waste.

[0058] Furthermore, by setting up a cleaning component, the old filter curtain can be cleaned during the winding process, thus achieving the self-cleaning function of the filter.

[0059] Furthermore, by incorporating a cleaning roller brush, a first brush, and a second brush, the cleaning effect of the filter screen can be improved, enabling its recycling. The dust collection box effectively collects the cleaned dust, preventing secondary pollution.

[0060] Furthermore, by sharing a drive mechanism between the cleaning roller and the first roll, the device structure can be simplified and the device cost reduced.

[0061] By judging the pressure difference before and after the filter screen and the magnitude of the preset pressure difference threshold, the replacement of the filter screen can be controlled, thus realizing the self-replacement of the filter screen and reducing maintenance and labor costs.

[0062] Furthermore, by controlling the drive mechanism to replace the filter curtain while simultaneously cleaning the rolled-up filter curtain with a cleaning roller when the differential pressure is greater than or equal to a preset differential pressure threshold and the cumulative number of replacements is less than a replacement frequency threshold, automatic cleaning and reuse of the filter curtain can be achieved, improving the utilization rate of the curtain and reducing the number of maintenance operations.

[0063] Solution 1. A filtration device, characterized in that the filtration device comprises:

[0064] Mounting bracket;

[0065] A first spool and a second spool, both of which are rotatably mounted on the mounting bracket;

[0066] A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller;

[0067] A drive mechanism configured to drive the first drum to rotate.

[0068] Solution 2. The filtration device according to Solution 1, characterized in that the filtration device further includes a first drive shaft and a second drive shaft, the drive mechanism is connected to the first drive shaft, the first roll is sleeved on the first drive shaft and the first roll does not rotate relative to the first drive shaft, the second roll is sleeved on the second drive shaft and the second roll does not rotate relative to the second drive shaft.

[0069] Solution 3. The filtration device according to Solution 2, characterized in that the driving mechanism includes a drive motor and a first transmission component, wherein the drive motor is connected to the first transmission shaft via the first transmission component.

[0070] Solution 4. The filtering device according to Solution 3, characterized in that the first transmission component includes a first driving wheel and a first driven wheel, the first driving wheel and the first driven wheel are directly connected or connected through one of a transmission chain and a transmission belt, and the first driven wheel and the first transmission shaft are connected by a coupling.

[0071] Solution 5. The filtering device according to Solution 2, characterized in that a first positioning member is sleeved at each end of the first drive shaft, and the first drum is located between the two first positioning members; and / or

[0072] A second positioning element is fitted at each end of the second drive shaft, and the second drum is located between the two second positioning elements.

[0073] Solution 6. The filtration device according to Solution 2, characterized in that the filtration device further includes a cleaning component, the cleaning component being configured to clean the filter curtain at the first roll.

[0074] Solution 7. The filtration device according to Solution 6, characterized in that the cleaning component includes a cleaning roller brush, the driving mechanism further includes a second transmission component, the driving mechanism is connected to the cleaning roller brush through the second transmission component, and the cleaning roller brush is rotatably disposed on one side of the first roll.

[0075] Solution 8. The filtration device according to Solution 7, characterized in that the second transmission assembly includes a second driving wheel and a second driven wheel, the second driving wheel and the second driven wheel are connected in a transmission manner, and the second driven wheel and the cleaning roller brush are connected by one of a transmission chain and a transmission belt.

[0076] Solution 9. The filtration device according to Solution 7, characterized in that the cleaning component further includes a dust collection box, the dust collection box is fixedly disposed on one side of the first roll, and the cleaning roller brush is rotatably disposed on the dust collection box.

[0077] Solution 10. The filtration device according to Solution 9, characterized in that the top surface of the dust collection box and the first side surface of the dust collection box near the first roller form a notch, the cleaning roller brush is located at the notch, a first brush is provided on the side surface of the top surface near the notch, a second brush is provided on the side surface of the first roller near the notch, and both the first brush and the second brush press against the filter curtain.

[0078] Solution 11. The filtering device according to Solution 10, characterized in that the top surface of the dust collection box away from the notch is rotatably connected to the top edge of the second side of the dust collection box via a pivot, wherein the second side is disposed opposite to the first side.

[0079] Scheme 12. An air conditioning unit, characterized in that the air conditioning unit includes a filter device as described in any one of Schemes 1 to 11.

[0080] Solution 13. A control method for a filtration device, characterized in that the filtration device comprises:

[0081] Mounting bracket;

[0082] A first spool and a second spool, both of which are rotatably mounted on the mounting bracket;

[0083] A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller;

[0084] A drive mechanism configured to drive the first drum to rotate;

[0085] The control method includes:

[0086] Obtain the pressure difference before and after the filter screen;

[0087] Determine whether the pressure difference is greater than or equal to a preset pressure difference threshold;

[0088] Based on the judgment result, the drive mechanism is selectively controlled to start operation so as to automatically replace the filter curtain.

[0089] Solution 14. The control method for the filtration device according to Solution 13, characterized in that the filtration device further includes a cleaning component, the cleaning component includes a cleaning roller brush, the driving mechanism is throttle-connected to the cleaning roller brush, the cleaning roller brush is rotatably disposed on one side of the first roll, and the step of "selectively controlling the driving mechanism to start operation based on the judgment result" further includes:

[0090] If the pressure difference is greater than or equal to the preset pressure difference threshold, then the cumulative number of times the filter curtain has been replaced is obtained;

[0091] Determine the magnitude of the cumulative number of replacements compared to the replacement number threshold;

[0092] If the cumulative number of replacements is less than the replacement threshold, the drive mechanism is controlled to start running so that the filter curtain is automatically replaced while the rolled-up filter curtain is cleaned.

[0093] Solution 15. The control method for the filtration device according to Solution 14, characterized in that the control method further includes:

[0094] If the cumulative number of replacements is greater than or equal to the replacement threshold, then the cumulative number of times the filter curtain has been swapped is obtained;

[0095] Determine the magnitude of the cumulative number of swaps and the swap count threshold;

[0096] If the cumulative number of swaps is less than the swap count threshold, then a filter curtain swap message is sent.

[0097] If the cumulative number of swaps is greater than or equal to the swap count threshold, a filter curtain replacement message is sent.

[0098] Solution 16. The control method for the filtration device according to Solution 15, characterized in that the control method further includes:

[0099] After controlling the start of the drive mechanism, update the value of the cumulative number of replacements; and / or

[0100] After sending the filter screen swap information, update the value of the cumulative swap count and control the value of the cumulative replacement count to zero; and / or

[0101] After sending the filter curtain replacement message, the cumulative number of swaps is reset to zero.

[0102] Solution 17. The control method for the filtration device according to Solution 14, characterized in that, after the step of "controlling the drive mechanism to start operation", the control method further includes:

[0103] Obtain the running time of the drive mechanism;

[0104] Determine the difference between the running time and a preset time threshold;

[0105] When the running time is greater than or equal to the preset time threshold, the drive mechanism is controlled to stop running.

[0106] Solution 18. The control method for the filtering device according to Solution 15, characterized in that, after the step of "issuing filter curtain swap information" or "issuing filter curtain replacement information", the control method further includes:

[0107] Determine if the new filter screen is installed correctly;

[0108] If the filter screen is not installed correctly, an installation failure message will be issued.

[0109] Solution 19. The control method for the filtration device according to Solution 15, characterized in that the cleaning component further includes a dust collection box, the dust collection box is fixedly disposed on one side of the first roller, the cleaning roller brush is rotatably disposed on the dust collection box, and after the step of "issuing filter curtain swap information" or "issuing filter curtain replacement information", the control method further includes:

[0110] Determine whether the dust collection box has been cleaned;

[0111] If the dust collection box is not cleaned, a prompt message to clean the dust collection box will be issued. Attached Figure Description

[0112] The filtration device, air conditioning unit, and control method of this application will now be described with reference to the accompanying drawings. In the drawings:

[0113] Figure 1 The image shows the front view of the filter device of this application installed on the outdoor unit of the air conditioning unit;

[0114] Figure 2 This is a top view of the filter device of this application installed on the outdoor unit of an air conditioning unit;

[0115] Figure 3 This is a front view of the filtering device of this application;

[0116] Figure 4 This is a structural diagram of the drive mechanism of the filter device of this application;

[0117] Figure 5 This is a top view of the filtration device of this application;

[0118] Figure 6 A flowchart of the control method for the filtration device of this application;

[0119] Figure 7 A logic diagram of the control method for the filtration device of this application.

[0120] List of reference numerals

[0121] 10. Filter device; 11. Mounting bracket; 111. Body; 112. Channel plate; 12. First roll; 13. Second roll; 14. Filter curtain; 15. Drive mechanism; 151. Drive motor; 152. First transmission assembly; 1521. First drive wheel; 1522. First driven wheel; 1523. First transmission belt; 153. Second transmission assembly; 1531. Second drive wheel; 1532. Second driven wheel; 1533. Second transmission belt; 16. First transmission shaft; 161. First positioning element; 17. Second transmission shaft; 171. Second positioning element; 18. Cleaning assembly; 181. Cleaning roller brush; 182. Dust collection box; 1821. Notch; 1822. First brush; 1823. Second brush; 19. Coupling; 20. Housing. Detailed Implementation

[0122] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although this embodiment is described in conjunction with the vertical arrangement of the first and second rolls, this is not intended to limit the scope of protection of this application. Those skilled in the art can modify the arrangement without departing from the principles of this application. For instance, the first and second rolls may also be arranged horizontally or diagonally, etc.

[0123] First refer to Figure 1 and Figure 2 This paper describes a general embodiment of the filtering device of this application. Among other things, Figure 1 The image shows the front view of the filter device of this application installed on the outdoor unit of the air conditioning unit; Figure 2 This is a top view of the filter device of this application installed on the outdoor unit of an air conditioning unit.

[0124] like Figure 1 and Figure 2 As shown, to address the problems of material waste, high maintenance costs, and high labor costs associated with existing air conditioning unit filters, the filter device 10 of this application includes a mounting bracket 11, a first roller 12, a second roller 13, a filter curtain 14, and a drive mechanism 15. The mounting bracket 11 is disposed within the outer casing 20 of the outdoor unit of the air conditioning unit. Both the first roller 12 and the second roller 13 are rotatably mounted on the mounting bracket 11. The two ends of the filter curtain 14 are respectively connected to the first roller 12 and the second roller 13, and a portion of the filter curtain 14 is wound around the second roller 13. The drive mechanism 15 is configured to drive the first roller 12 to rotate.

[0125] In application, the filter device 10 of this application allows outdoor air to enter the outer casing 20 of the outdoor unit and exchange heat with the outdoor unit after being filtered by the filter curtain 14. After the filter curtain 14 has been used for a period of time, its filtration efficiency decreases, requiring replacement. At this time, the drive mechanism 15 is activated, causing the first roller 12 to rotate. The first roller 12 then rotates the filter curtain 14, causing it to wind around the first roller 12. Simultaneously, the second roller 13, driven by the first roller 12, rotates to release the new filter curtain 14 wound on it, thus achieving automatic replacement of the filter curtain 14.

[0126] As can be seen, by replacing the original modular filter screen with a roll-type filter screen that is rotatably mounted on the mounting bracket 11 and driven by the drive mechanism 15, the filter screen 14 can be automatically replaced by rewinding, which reduces maintenance and labor costs. Furthermore, the filter screen 14 does not require a frame, which also reduces material waste.

[0127] The following reference Figures 1 to 5 A preferred embodiment of the filtering device of this application will be described. Figure 3 This is a front view of the filtering device of this application; Figure 4 This is a structural diagram of the drive mechanism of the filter device of this application; Figure 5 This is a top view of the filtering device of this application.

[0128] See Figures 1 to 3The filter device 10 includes a mounting bracket 11, a first drive shaft 16, a second drive shaft 17, a first roll 12, a second roll 13, a filter curtain 14, and a drive mechanism 15. The mounting bracket 11 includes a body 111 and a channel plate 112 disposed on the body 111. The body 111 is fixed vertically inside the outer casing 20 of the outdoor unit, and the channel plate 112 is fixedly installed on one side of the body 111. In this application, four channel plates 112 are provided, arranged in pairs side-by-side. The two lower channel plates 112 support the first drive shaft 16, and the two upper channel plates 112 support the second drive shaft 17.

[0129] See Figure 3 and Figure 5 Each end of the first drive shaft 16 is fitted with a first positioning element 161, which in this application is a positioning disc. After being fitted, the two ends of the first drive shaft 16 extend out of the corresponding positioning discs and are supported in the grooves of the two lower slotted plates 112. Similarly, each end of the second drive shaft 17 is fitted with a second positioning element 171, which is also a positioning disc. The two ends of the second drive shaft 17 extend out of the corresponding positioning discs and are supported in the grooves of the two upper slotted plates 112. After installation, the first drive shaft 16 and the second drive shaft 17 can rotate freely.

[0130] The first drum 12 is mounted on the first drive shaft 16 and positioned between two first positioning members 161, and is jointly positioned by the two first positioning members 161. After installation, the first drum 12 and the first drive shaft 16 do not rotate relative to each other. This can be achieved by means of snap-fit, screw connection, or interference fit between the first drum 12 and the first positioning member 161, or by means of key connection, screw connection, gear connection, or interference fit between the first positioning member 161 and the first drive shaft 16, ultimately achieving no relative movement between the first drum 12 and the first drive shaft 16.

[0131] The second drum 13 is mounted on the second drive shaft 17 and positioned between the two second positioning members 171, and is jointly positioned by the two second positioning members 171. After installation, the second drum 13 and the second drive shaft 17 do not rotate relative to each other. This can be achieved by means of snap-fit, screw-fit, or interference fit between the second drum 13 and the second positioning member 171, or by means of key connection, screw-fit, gear connection, or interference fit between the second positioning member 171 and the second drive shaft 17, ultimately achieving no relative movement between the second drum 13 and the second drive shaft 17.

[0132] The two ends of the filter curtain 14 are fixedly connected to the first roller 12 and the second roller 13, respectively, by means of adhesive bonding, snap-fitting, or other methods. Furthermore, the length of the filter curtain 14 is significantly greater than the distance between the first roller 12 and the second roller 13, preferably an integer multiple of that distance. During initial installation, one end of the filter curtain 14 is fixed to the first roller 12, and the other end is fixed to the second roller 13; the excess length is wound onto the second roller 13. Because the mounting bracket 11 is vertically oriented, the first roller 12 and the second roller 13 are arranged vertically. After installation, the filter curtain 14 is unfolded and straightened vertically.

[0133] See Figure 3 , Figure 4 heat exchange Figure 5 The drive mechanism 15 is connected to the first transmission shaft 16. Specifically, the drive mechanism 15 includes a drive motor 151 and a first transmission assembly 152. The drive motor 151 is connected to the first transmission shaft 16 via the first transmission assembly 152. In this application, the first transmission assembly 152 includes a first driving pulley 1521, a first driven pulley 1522, and a first transmission belt 1523. Both the first driving pulley 1521 and the first driven pulley 1522 are belt pulleys. The first driving pulley 1521 is connected to the output shaft of the drive motor 151, and the first driving pulley 1521 and the first driven pulley 1522 are connected by the first transmission belt 1523. A rotating shaft is provided on the first driven pulley 1522, and this rotating shaft is connected to the first transmission shaft 16 via a coupling 19. The rotating shaft on the first driven pulley 1522 can be integrally formed with the first driven pulley 1522, or it can be connected via a transmission key or other connecting parts.

[0134] When the drive motor 151 is powered on, the output shaft drives the first drive wheel 1521 to rotate. The first drive wheel 1521 drives the first driven wheel 1522 to rotate through the first transmission belt 1523. The first driven wheel 1522 drives the first transmission shaft 16 to rotate through the rotating shaft and coupling 19. At this time, the filter curtain 14 between the first transmission shaft 16 and the second transmission shaft 17 is rolled up on the first transmission shaft 16, while the filter curtain 14 on the second transmission shaft 17 is released as the second transmission shaft 17 rotates, thus realizing the automatic replacement of the filter curtain 14.

[0135] It should be noted that although the connection relationship between the first drive shaft 16 and the second drive shaft 17 is not described in the above embodiments, this does not mean that this application cannot be implemented. On the contrary, this application does not limit whether the first drive shaft 16 and the second drive shaft 17 are connected or the specific connection method. No matter how it is set, as long as the filter curtain 14 can be effectively straightened and replaced under the drive mechanism 15, it is acceptable. For example, the first drive shaft 16 and the second drive shaft 17 can achieve synchronous rotation through a drive belt, drive chain or other transmission method; or no transmission connection is provided between the first drive shaft 16 and the second drive shaft 17, and the rotation of the first drive shaft 16 and the release of the filter curtain 14 drive the rotation of the second drive shaft 17.

[0136] By mounting the first roll 12 and the second roll 13 onto the first drive shaft 16 and the second drive shaft 17 respectively, the two rolls and the two drive shafts are made independent of each other, allowing for individual disassembly and replacement of the rolls, reducing material waste. By providing a grooved plate 112 on the body 111 of the mounting bracket 11 to support the first drive shaft 16 and the second drive shaft 17, the disassembly of the first roll 12 and the second roll 13 can be facilitated. By setting the first positioning element 161 and the second positioning element 171, the installation and positioning accuracy of the first roll 12 and the second roll 13 can be improved, ensuring the operational stability of the device. By setting the length of the filter curtain 14 to an integer multiple of the distance between the first roll 12 and the second roll 13, waste of the filter curtain 14 can be avoided, and its service life can be increased, reducing the frequency of replacement.

[0137] See Figure 1 , Figure 3 and Figure 4 The filtration device 10 also includes a cleaning assembly 18, which is configured to clean the filter screen 14 at the first roll 12. Specifically, the cleaning assembly 18 includes a cleaning roller brush 181 and a dust collection box 182. The cleaning roller brush 181 is connected to a drive mechanism 15, which can drive the cleaning roller brush 181 to rotate and thus clean the filter screen 14. The dust collection box 182 can collect the dust swept down by the cleaning roller brush 181.

[0138] Specifically, the drive mechanism 15 further includes a second transmission assembly 153, through which the drive mechanism 15 is connected to the cleaning roller brush 181. The second transmission assembly 153 includes a second driving wheel 1531 and a second driven wheel 1532. In this application, both the second driving wheel 1531 and the driven wheel 1532 are gears. The second driving wheel 1531 is coaxially arranged with the first driving wheel 1521, and both are mounted on the output shaft of the drive motor 151. The second driven wheel 1532 is a two-stage gear, including a gear and a pulley, which are integrally formed and rotatably mounted beside the second driving wheel 1531. It can be supported beside the second driving wheel 1531 by a support frame or similar means. After being set up, the second driving wheel 1531 meshes with the gear in the second driven wheel 1532. The cleaning roller brush 181 extends axially along the first drive shaft 16 and is disposed on one side of the first drum 12. The pulley of the second driven wheel 1532 is connected to the cleaning roller brush 181 via the second drive belt 1533.

[0139] When the drive motor 151 is energized, in addition to driving the first transmission shaft 16 to rotate, it can also simultaneously drive the cleaning roller brush 181 to rotate in the opposite direction. Figure 4 Taking the orientation shown as an example, if the output shaft of the drive motor 151 rotates counterclockwise when it is powered on, then the first drive shaft 16 rotates counterclockwise, while the cleaning roller brush 181 rotates clockwise. In this way, while the first drive shaft 16 is winding the filter cloth 14, the cleaning roller brush 181 can clean the filter cloth 14 at the winding point of the first roller 12, and the cleaned dust falls downwards.

[0140] See also Figure 4 The dust collection box 182 is fixedly disposed on one side of the first roller 12, and the dust collection box 182 houses the cleaning roller brush 181. In other words, the cleaning roller brush 181 is rotatably disposed in the dust collection box 182. For example, the dust collection box 182 is disposed inside the outer casing 20 of the outdoor unit by means of snap-fit, hook-fit, or screw-fit, and extends axially along the first drive shaft 16. The dust collection box 182 has shaft holes at both ends along its extension direction. One end of the cleaning roller brush 181 is rotatably disposed in one shaft hole, and the other end extends out of the other shaft hole and is fixedly connected to a pulley. This pulley is connected to the pulley in the second driven wheel 1532 through the second drive belt 1533.

[0141] The top surface of dust collection box 182 ( Figure 4 The upper side of the dust collection box 182 is close to the first side of the first drum 12. Figure 4A notch 1821 is formed on the right side of the dust collection box 182. After installation, the notch 1821 faces the first roller 12, and the cleaning roller brush 181 is located at the notch 1821. A first brush 1822 is provided on the top surface of the dust collection box 182, extending outward from the side near the notch 1821, and a second brush 1823 is provided on the first side, extending outward from the side near the notch 1821. After installation, both the first brush 1822 and the second brush 1823 can press against the filter curtain 14.

[0142] Furthermore, the top surface of the dust collection box 182, away from the side of the notch 1821, is connected to the second side surface of the dust collection box 182 via a pivot. Figure 4 The top edge of the left side (of the first side) is rotatably connected, and an elastic element is provided between the second side and the top surface. In this application, the elastic element is a torsion spring, which is configured to store elastic potential energy when the top surface pivots open relative to the second side. The second side is positioned opposite to the first side.

[0143] In the above configuration, when the drive motor 151 is energized, the used filter cloth 14 is wound onto the first roll 12. At the same time, the cleaning roller brush 181 cleans the wound filter cloth 14, collecting the dust in the dust collection box 182. The first brush 1822 and the second brush 1823 on the dust collection box 182 can also clean the filter cloth 14 when it is wound up, and the dust also falls into the dust collection box 182. When the filter curtain 14 has been fully released and needs to be replaced, the coupling 19 can be opened, and the first drive shaft 16, the second drive shaft 17, the first positioning member 161, the second positioning member 171, the first roller 12, the second roller 13, and the filter curtain 14 can be removed together. Then, the first positioning member 161 and the second positioning member 171 can be disassembled, and the filter curtain 14, along with the first roller 12 and the second roller 13, can be removed as a whole, thus replacing the entire filter curtain 14. Installation is the reverse of this process. When a certain amount of dust has accumulated in the dust collection box 182, the dust collection box 182 can be disassembled and the top surface can be pivotally opened to clean the dust inside.

[0144] By incorporating the cleaning component 18, the filter screen 14 can be cleaned during the winding process, thus achieving a self-cleaning function. Furthermore, the cleaning component 18 allows for the repeated use of the filter screen 14, reducing maintenance costs. The cleaning roller brush 181, the first brush 1822, and the second brush 1823 enhance the cleaning effect of the filter screen 14, enabling its recycling. The dust collection box 182 effectively collects the cleaned dust, preventing secondary pollution. The shared drive mechanism 15 between the cleaning roller brush 181 and the first roller 12 simplifies the device structure and reduces costs. The opposing rotation of the cleaning roller brush 181 and the first roller 12 ensures downward dust removal, preventing contamination of newly released filter screens. By rotatably connecting the top surface of the dust collection box 182 to the second side and setting an elastic element to achieve automatic closing of the top surface of the dust collection box 182, the cleaning of the dust collection box 182 is facilitated on the one hand, and the dust collection box 182 is kept closed at all times without external force on the other hand.

[0145] Of course, the above preferred technical solutions are only used to illustrate the principles of this application and are not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can adjust the above technical solutions so that this application can be applied to more specific application scenarios.

[0146] For example, in one possible implementation, although the above implementation is described in conjunction with the filter device 10 having a first drive shaft 16 and a second drive shaft 17, the first drive shaft 16 and the second drive shaft 17 are not essential. As long as the filter curtain 14 can be wound and unwound, those skilled in the art can choose whether to include the first drive shaft 16 and the second drive shaft 17 based on the actual application scenario. For instance, without including the first drive shaft 16 and the second drive shaft 17, a rotating shaft can be provided extending outwards from both ends of the first roll 12 and the second roll 13, or the walls of the first roll 12 and the second roll 13 can be directly used as rotating shafts, and the first roll 12 can be connected to the first driven wheel 1522 in a driving connection.

[0147] For example, in another alternative embodiment, the specific configuration of the drive mechanism 15 is not fixed. As long as it can at least drive the first drum 12 to rotate, those skilled in the art can adjust its specific configuration. For instance, the drive mechanism 15 can only drive the first drum 12 to rotate, while the cleaning roller brush 181 is driven by a separately configured drive device. For another example, in the first transmission assembly 152, the first driving wheel 1521 and the first driven wheel 1522 can be directly connected, such as both being gears, or both being gears connected by a transmission chain. For yet another example, in the second transmission assembly 153, the second driving wheel 1531 and the second driven wheel 1532 can be combined into a single component, or the second driven wheel 1532 and the cleaning roller brush 181 can be connected by a transmission chain, or the second driven wheel 1532 can be omitted, and the second driving wheel 1531 can be directly connected to the cleaning roller brush 181.

[0148] For example, in another alternative embodiment, the first positioning element 161 and the second positioning element 171 are not necessary, and one or both of them can be omitted.

[0149] For example, in another alternative embodiment, although the above embodiment is described in conjunction with the filter device 10 and the cleaning component 18, the inclusion or exclusion of the cleaning component 18 and its specific arrangement are not fixed, and those skilled in the art can choose according to the specific application scenario. For example, the cleaning component 18 can be omitted entirely, or the cleaning component 18 can only include the cleaning roller brush 181 while omitting the dust collection box 182. Furthermore, the dust collection box 182 may not have the first brush 1822 and the second brush 1823, and the top surface of the dust collection box 182 can be fixed.

[0150] Of course, the alternative implementation methods described above, as well as the alternative implementation methods and preferred implementation methods, can be used in combination to create new implementation methods that are suitable for more specific application scenarios.

[0151] See back Figure 1 and Figure 2 This application also provides an air conditioning unit, which includes an outdoor unit, and the filter device 10 described in any of the above embodiments is disposed inside the outer casing 20 of the outdoor unit.

[0152] By installing a filter device 10 inside the outdoor unit's casing 20, the frequency of manual maintenance of the air conditioning unit can be reduced, maintenance costs can be lowered, and the filter cloth can be self-cleaned and self-replaced. Furthermore, the replacement operation is simple, eliminating a dirty and messy maintenance environment.

[0153] The following is combined Figure 6 The control method of the filtration device of this application is described. Figure 6 This is a flowchart of the control method for the filtration device of this application.

[0154] like Figure 6 As shown, in relation to the filtration device involved in the above embodiments, this application also provides a control method for the filtration device, the control method comprising:

[0155] S101. Obtain the pressure difference across the filter screen. For example, pressure sensors are installed before and after the filter screen. The pressure sensors detect the pressure across the filter screen and calculate the difference between the two as the pressure difference. Alternatively, the pressure difference across the filter screen can be obtained indirectly by installing a wind speed sensor, etc., which will not be elaborated further.

[0156] S103. Determine whether the differential pressure is greater than or equal to a preset differential pressure threshold. For example, the difference or ratio between the differential pressure and the preset differential pressure threshold can be calculated to determine the magnitude of the differential pressure and the preset differential pressure threshold, thereby reflecting the degree of clogging of the filter screen. The preset differential pressure threshold can be determined based on experiments or experience.

[0157] S105. Based on the judgment result, selectively control the drive mechanism to start operation in order to automatically replace the filter curtain. For example, when the pressure difference is greater than or equal to the preset pressure difference threshold, it indicates that the filter curtain is not severely clogged, and the current state can be maintained. Conversely, when the pressure difference is less than the preset pressure difference threshold, it proves that the filter curtain is severely clogged, affecting the heat exchange effect of the outdoor unit, and the filter curtain needs to be replaced. At this time, by controlling the drive mechanism to start operation, the drive mechanism drives the first drum to rotate, thereby realizing the winding of the dirty filter curtain and the release of the new filter curtain.

[0158] By judging the pressure difference before and after the filter screen and the magnitude of the preset pressure difference threshold, the replacement of the filter screen can be controlled, thus realizing the self-replacement of the filter screen and reducing maintenance and labor costs.

[0159] The preferred embodiments of the control method of this application are described below.

[0160] In a preferred embodiment, provided that the filter device is equipped with a cleaning roller brush, step S105 further includes: if the pressure difference is greater than or equal to a preset pressure difference threshold, then obtaining the cumulative number of times the filter curtain has been replaced; determining the magnitude of the cumulative number of replacements compared to a replacement threshold; if the cumulative number of replacements is less than the replacement threshold, then controlling the drive mechanism to start operation so as to automatically replace the filter curtain while cleaning the rolled-up filter curtain. If the cumulative number of replacements is greater than or equal to the replacement threshold, then further obtaining the cumulative number of times the filter curtain has been swapped; determining the magnitude of the cumulative number of swaps compared to a swap threshold; if the cumulative number of swaps is less than the swap threshold, then issuing filter curtain swapping information; if the cumulative number of swaps is greater than or equal to the swap threshold, then issuing filter curtain replacement information.

[0161] Specifically, the replacement threshold can be determined based on the length of the filter screen and the number of times it can be released. When the pressure difference is greater than or equal to the preset pressure difference threshold, it indicates that the filter screen is severely clogged and needs to be replaced. Since the length of the filter screen is limited and is an integer multiple of the distance between the first and second rolls, the filter screen cannot be replaced an unlimited number of times. In this case, the cumulative number of replacements is used to determine whether the filter screen is used up. The cumulative number of replacements can be accumulated using the motor start signal. When the cumulative number of replacements is less than the replacement threshold, it indicates that the filter screen is not yet used up. At this time, the control drive mechanism starts running, winding the clogged filter screen to the first roll, while releasing a new filter screen from the second roll. During the winding process, a cleaning roller brush cleans the wound filter screen, and after the control drive mechanism starts, the cumulative number of replacements is updated by incrementing the value by 1. Conversely, if the cumulative number of replacements is greater than or equal to the replacement threshold, it indicates that the filter screen is used up, and there is no new filter screen available to be released from the second roll. In this case, the filter screen needs to be replaced.

[0162] Because the filter device of this application is equipped with a cleaning roller brush, the rolled-up filter screen can be reused. Therefore, the filter screen replacement process can be divided into filter screen swapping and filter screen replacement. Filter screen swapping involves exchanging the positions of the first and second rolls, reusing the filter screen wound on the first roll. Each swap counts as one swap. Filter screen replacement involves removing the first and second rolls and the filter screen as a whole, and then replacing it with a new filter screen. This can be done by replacing the entire first and second rolls and the filter screen, or by replacing only the filter screen by removing the old filter screen and installing the new filter screen onto the first and second rolls.

[0163] Specifically, the system first obtains the cumulative number of times the filter screen has been swapped and then compares this number with a threshold value. If the cumulative number of swaps is less than the threshold, the filter screen can still be reused. In this case, a swap message is sent, such as an audio / visual message or text message displayed on the screen, to remind staff to swap the first and second rolls. The cumulative swap count is then incremented by 1, and the cumulative replacement count is reset to zero, starting the replacement count again. If the cumulative number of swaps is greater than or equal to the threshold, the filter screen has reached the end of its lifespan and cannot be used further. In this case, a replacement message is sent, such as an audio / visual message or text message displayed on the screen, to remind staff to replace the filter screen. The cumulative swap count is reset to zero, and the swap count is reset to zero, starting the replacement count again. The swap count threshold can be determined experimentally or empirically, and the cumulative swap count can be counted by sending the filter screen swap message.

[0164] By controlling the drive mechanism to replace the filter curtain while simultaneously cleaning the wound filter curtain with a cleaning roller when the differential pressure is greater than or equal to a preset differential pressure threshold and the cumulative number of replacements is less than a replacement frequency threshold, automatic cleaning and reuse of the filter curtain can be achieved, improving the utilization rate of the filter curtain and reducing maintenance frequency. Furthermore, by issuing filter curtain swapping or replacement information based on the number of swaps when the cumulative number of replacements is greater than or equal to the replacement frequency threshold, the reuse of the filter curtain can be maximized, reducing maintenance costs.

[0165] In a preferred embodiment, after the step of "controlling the drive mechanism to start running", the control method further includes: obtaining the running time of the drive mechanism; determining the difference between the running time and a preset time threshold; and controlling the drive mechanism to stop running when the running time is greater than or equal to the preset time threshold.

[0166] For example, after the drive mechanism starts running, it needs to completely roll up the dirty filter curtain to the first roll and release the fresh air filter curtain to fill the space between the first and second rolls. Through experiments or theoretical calculations, a preset time threshold for the drive mechanism can be determined. When the start-up time of the drive mechanism reaches this preset time threshold, it indicates that the filter curtain has been replaced, and at this point, the drive mechanism is controlled to stop running.

[0167] In a preferred embodiment, after the steps of "sending filter screen swap information" or "sending filter screen replacement information", the control method further includes: determining whether the new filter screen is installed correctly; and issuing an installation failure prompt message when the filter screen is not installed correctly.

[0168] For example, sensors can be installed on the slotted plate or mounting bracket to determine if the filter screen is installed correctly. The specific type of sensor is not limited; it can be a distance sensor, proximity sensor, or infrared sensor, etc. When the filter screen is installed correctly, the sensor is triggered and sends a signal; otherwise, the sensor is not triggered. When the sensor is not triggered, an installation failure message is issued, such as through sound / light signals or text displayed on the screen, to inform the staff that the installation is incorrect and needs to be reinstalled. Of course, the sensor triggering rules can also be reversed: the sensor is not triggered when the filter screen is installed correctly, but is triggered when the filter screen is not installed correctly.

[0169] The above controls can effectively determine the effectiveness of the filter curtain installation, ensure the stable operation of the filter device, and avoid operational failures caused by incorrect installation.

[0170] In a preferred embodiment, when the cleaning component also includes a dust collection box, after the steps of "issuing filter curtain swap information" or "issuing filter curtain replacement information", the control method further includes: determining whether the dust collection box has been cleaned; and issuing a dust collection box cleaning prompt information when the dust collection box has not been cleaned.

[0171] For example, a sensor can be placed near the dustbin to determine whether it has been cleaned. The specific type of sensor is not limited; it can be a distance sensor, proximity sensor, or infrared sensor, etc. When the dustbin is removed, the sensor is triggered and sends a signal; otherwise, it is not triggered. When the sensor is not triggered, a prompt to clean the dustbin is issued, such as through sound / light cues or text displayed on a screen, to remind staff to clean the dustbin promptly. Of course, the sensor triggering rules can also be reversed: the sensor is not triggered when the dustbin is removed, but is triggered when the dustbin is not removed.

[0172] The above controls can effectively determine the timeliness of dust collection box cleaning, ensuring that the dust collection box is cleaned in a timely manner and avoiding secondary pollution.

[0173] See below. Figure 7 This paper introduces one possible control logic for the filtering device of this application.

[0174] like Figure 7 As shown, one possible control process is as follows:

[0175] S201: Obtain the pressures P1 and P2 before and after the filter curtain respectively, calculate the difference between them ΔP = P1 - P2, and then execute S202.

[0176] S202, determine if ΔP≥Pr is true. If true, proceed to S203; otherwise, if false, terminate the program. Here, Pr is a preset differential pressure threshold.

[0177] S203, obtain the cumulative number of replacements n1, and then execute S204.

[0178] S204, determine if n1≥Ng is true. If true, proceed to S208; otherwise, if false, proceed to S205. Here, Ng is the threshold for the number of replacements.

[0179] S205: The control drive mechanism starts operation to wind up the overly dirty and clogged filter cloth, while releasing a new filter cloth. The wound filter cloth is also cleaned during the winding process. Then, S206 is executed.

[0180] S206, determine whether the running time t≥T of the drive mechanism is true? If true, execute S207; otherwise, if false, return to continue executing S205.

[0181] S207, the control drive mechanism stops running, and the filter curtain replacement is complete. The cumulative replacement count n1 = n1 + 1 is also updated.

[0182] S208, obtain the cumulative number of swaps n2, and then execute S209.

[0183] S209, determine if n2 ≥ Nd is true. If true, proceed to S210; otherwise, if false, proceed to S211. Here, Nd is the threshold for the number of swaps.

[0184] S210 displays text prompts on the screen indicating the need to replace the filter and clean the dust collection box, reminding staff to do so. Then, the cumulative number of replacements, n2, is reset to zero.

[0185] S211: Issue text prompts to swap the filter screen and clean the dust collection box, reminding staff to swap the filter screen and clean the dust collection box. Then, reset the cumulative replacement count n1 to zero and update the cumulative swap count n2 = n2 + 1.

[0186] S212, Determine if the filter screen is installed correctly. If yes, proceed to S214; otherwise, proceed to S213.

[0187] S213, issue an audible and visual alarm for installation failure.

[0188] S214, Determine if the dust collection box has been cleaned. If yes, end the program; otherwise, execute S215.

[0189] S215 triggers an audible and visual alarm for cleaning the dust collection box.

[0190] Although the steps in the above embodiments are described in the above order, those skilled in the art will understand that in order to achieve the effect of this embodiment, different steps do not need to be executed in such order. They can be executed simultaneously (in parallel) or in reverse order. These simple changes are all within the protection scope of this application.

[0191] The various component embodiments of this application can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the server or client according to the embodiments of this application. This application can also be implemented as a device or apparatus program (e.g., a PC program and PC program products) for performing part or all of the methods described herein. Such an implementation of this application can be stored on a PC-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0192] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0193] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control method for a filtration device, characterized in that, The filtration device includes: Mounting bracket; A first spool and a second spool, both of which are rotatably mounted on the mounting bracket; A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller; A drive mechanism configured to drive the first drum to rotate; The control method includes: Obtain the pressure difference before and after the filter screen; Determine whether the pressure difference is greater than or equal to a preset pressure difference threshold; Based on the judgment result, the drive mechanism is selectively controlled to start operation so as to automatically replace the filter curtain; The filtration device further includes a cleaning component, which includes a cleaning roller brush. The drive mechanism is throttle-connected to the cleaning roller brush, and the cleaning roller brush is rotatably disposed on one side of the first roll. The step of "selectively controlling the drive mechanism to start operation based on the judgment result" further includes: If the pressure difference is greater than or equal to the preset pressure difference threshold, then the cumulative number of times the filter curtain has been replaced is obtained; Determine the magnitude of the cumulative number of replacements compared to the replacement number threshold; If the cumulative number of replacements is less than the replacement number threshold, the drive mechanism is controlled to start running so that the filter curtain is automatically replaced while the rolled-up filter curtain is cleaned. The control method further includes: If the cumulative number of replacements is greater than or equal to the replacement threshold, then the cumulative number of times the filter curtain has been swapped is obtained; Determine the magnitude of the cumulative number of swaps and the swap count threshold; If the cumulative number of swaps is less than the swap count threshold, then a filter curtain swap message is sent. If the cumulative number of swaps is greater than or equal to the swap count threshold, a filter curtain replacement message is sent.

2. The control method for the filtration device according to claim 1, characterized in that, The control method further includes: After controlling the start of the drive mechanism, update the value of the cumulative number of replacements; and / or After sending the filter screen swap information, update the value of the cumulative swap count and control the value of the cumulative replacement count to zero; and / or After sending the filter curtain replacement message, the cumulative number of swaps is reset to zero.

3. The control method for the filtration device according to claim 1, characterized in that, After the step of "controlling the drive mechanism to start operation", the control method further includes: Obtain the running time of the drive mechanism; Determine the difference between the running time and a preset time threshold; When the running time is greater than or equal to the preset time threshold, the drive mechanism is controlled to stop running.

4. The control method for the filtration device according to claim 1, characterized in that, After the steps of "sending filter screen swap information" or "sending filter screen replacement information", the control method further includes: Determine if the new filter screen is installed correctly; If the filter screen is not installed correctly, an installation failure message will be issued.

5. The control method for the filtration device according to claim 1, characterized in that, The cleaning assembly further includes a dust collection box, which is fixedly disposed on one side of the first roll. The cleaning roller brush is rotatably disposed in the dust collection box. After the steps of "issuing filter curtain swap information" or "issuing filter curtain replacement information", the control method further includes: Determine whether the dust collection box has been cleaned; If the dust collection box is not cleaned, a prompt message to clean the dust collection box will be issued.

6. A filtration device for performing the control method according to any one of claims 1 to 5, characterized in that, The filtration device includes: Mounting bracket; A first spool and a second spool, both of which are rotatably mounted on the mounting bracket; A filter screen, the two ends of which are respectively connected to the first roller and the second roller, and a portion of the filter screen is wound around the second roller; A drive mechanism configured to drive the first drum to rotate.

7. The filtration device according to claim 6, characterized in that, The filtration device further includes a first drive shaft and a second drive shaft. The drive mechanism is connected to the first drive shaft. The first roll is sleeved on the first drive shaft and there is no relative rotation between the first roll and the first drive shaft. The second roll is sleeved on the second drive shaft and there is no relative rotation between the second roll and the second drive shaft.

8. The filtration device according to claim 7, characterized in that, The driving mechanism includes a drive motor and a first transmission component, wherein the drive motor is connected to the first transmission shaft via the first transmission component.

9. The filtration device according to claim 8, characterized in that, The first transmission assembly includes a first driving wheel and a first driven wheel. The first driving wheel and the first driven wheel are directly connected or connected through one of a transmission chain and a transmission belt. The first driven wheel is connected to the first transmission shaft through a coupling.

10. The filtration device according to claim 7, characterized in that, Each end of the first drive shaft is fitted with a first positioning element, and the first drum is located between the two first positioning elements; and / or A second positioning element is fitted at each end of the second drive shaft, and the second drum is located between the two second positioning elements.

11. The filtration device according to claim 7, characterized in that, The filtration device further includes a cleaning component configured to clean the filter screen at the first roll.

12. The filtration device according to claim 11, characterized in that, The cleaning assembly includes a cleaning roller brush, and the driving mechanism further includes a second transmission assembly. The driving mechanism is connected to the cleaning roller brush via the second transmission assembly, and the cleaning roller brush is rotatably disposed on one side of the first roll.

13. The filtration device according to claim 12, characterized in that, The second transmission assembly includes a second driving wheel and a second driven wheel. The second driving wheel is connected to the second driven wheel in a transmission manner. The second driven wheel is connected to the cleaning roller brush via a transmission chain and a transmission belt.

14. The filtration device according to claim 12, characterized in that, The cleaning assembly also includes a dust collection box, which is fixedly disposed on one side of the first roll, and the cleaning roller brush is rotatably disposed on the dust collection box.

15. The filtration device according to claim 14, characterized in that, The top surface of the dust collection box and the first side of the dust collection box near the first roller form a notch. The cleaning roller is located at the notch. A first brush is provided on the side of the top surface near the notch, and a second brush is provided on the side of the first side near the notch. Both the first brush and the second brush press against the filter curtain.

16. The filtration device according to claim 15, characterized in that, The top surface of the dust collection box away from the notch is rotatably connected to the top edge of the second side surface of the dust collection box via a pivot, wherein the second side surface is disposed opposite to the first side surface.

17. An air conditioning unit, characterized in that, The air conditioning unit includes the filtration device according to any one of claims 6 to 16.

Images