Filter device and control method thereof, and air conditioning unit

Abstract

The present invention provides a filtering device, a control method thereof, and an air-conditioning unit. The filtering device is applied to an air-conditioning unit, the air-conditioning unit including a shell, a fresh air channel and a return air channel provided inside the shell, and the filtering device including a first filter body and a first driving mechanism. The filtering device, the control method thereof, and the air-conditioning unit provided by the present invention utilize a driving mechanism to move the first filter body. When a portion of the first filter body in the fresh air channel needs to be cleaned, the driving mechanism can move the portion into the return air channel for cleaning or move it into the second scroll mechanism for collection. When the portion moves into the return air channel, the exhaust air in the return air channel can be used to blow impurities on the filter body out of the air-conditioning unit, thereby achieving the purpose of self-cleaning of the filter body by the air-conditioning unit and effectively overcoming the problem of frequent disassembly of the filter.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment equipment, in particular to a filtering device and a control method thereof, and an air conditioning unit. Background Art

[0002] To ensure the lifespan and filtration effectiveness of existing modular air conditioning unit filters, traditional disassembly and cleaning methods are typically employed. This involves shutting down the unit, manually removing the filter screen, rinsing it with water, and allowing it to dry before reinstalling and continuing use. Traditional filter cleaning is time-consuming, consumes significant energy during unit startup and shutdown, and requires manual cleaning, making it inconvenient to maintain.

[0003] With regard to the problem of the complicated cleaning process of the filter screen of the air-conditioning unit in the related art, no effective solution has been proposed so far. Summary of the Invention

[0004] In order to solve the technical problem of the complicated cleaning process of the filter of the air-conditioning unit in the prior art, a filtering device and a control method thereof, as well as an air-conditioning unit, are provided for cleaning the filter by utilizing the exhaust air of the air-conditioning unit.

[0005] To solve the above technical problems, according to one aspect of an embodiment of the present invention, a filtering device is provided for use in an air conditioning unit. The air conditioning unit includes a housing, and a fresh air channel and a return air channel are provided inside the housing. The filtering device includes:

[0006] a first filter body, wherein the first filter body is accommodated in the housing, and a portion of the first filter body located in the fresh air passage constitutes a filter section, the filter section being capable of filtering the airflow in the fresh air passage, and a portion of the first filter body located in the return air passage constitutes a cleaning section, the airflow in the return air passage being capable of cleaning the cleaning section;

[0007] The first driving mechanism is disposed in the housing, and the first driving mechanism drives the first filter body to move in the housing and switch the part of the first filter body constituting the filtering section and the part of the first filter body constituting the cleaning section.

[0008] When the first driving mechanism drives the first filter body to move, the first filter body constituting the filter section moves into the return air channel to form the cleaning section; or the first filter body constituting the cleaning section moves into the fresh air channel to form the filter section.

[0009] The first driving mechanism includes a reel mechanism, an end portion of the first filter body is disposed on the reel mechanism, and the reel mechanism is capable of collecting or releasing the first filter body.

[0010] The number of the reel mechanisms of the first driving mechanism is two, and includes a first reel mechanism and a second reel mechanism. The first reel mechanism is arranged in the fresh air channel, and the first end of the first filter body is arranged on the first reel mechanism. The second reel mechanism is arranged in the return air channel, and the second end of the first filter body is arranged on the second reel mechanism. The first reel mechanism and the second reel mechanism are arranged in linkage.

[0011] The reel mechanism includes a drive shaft and a sleeve. The drive shaft is arranged in the sleeve and can drive the sleeve to rotate together. The filter body is wound on the sleeve.

[0012] A mounting groove is provided at the end of the drive shaft, and a clip and a spring are provided in the mounting groove. The first end of the spring abuts against the bottom surface of the mounting groove, and the clip is provided on the second end of the spring, and the clip has a first state of being retracted into the mounting groove and a second state of protruding from the mounting groove.

[0013] A partition is provided between the fresh air channel and the return air channel. The partition is provided with a through hole, and the filter body passes through the through hole.

[0014] The filtering device further comprises:

[0015] a second filter body, the second filter body being received in the return air passage and filtering the airflow in the return air passage;

[0016] The second driving mechanism is arranged in the return air channel, and the second driving mechanism can switch the part of the second filter body that is in the filtering state.

[0017] The second driving mechanism includes a reel mechanism, an end portion of the second filter body is disposed on the reel mechanism, and the reel mechanism is capable of collecting or releasing the second filter body.

[0018] The number of the reel mechanisms of the second driving mechanism is two, and includes a third reel mechanism and a fourth reel mechanism. The third reel mechanism and the fourth reel mechanism are both arranged in the return air channel, and the first end of the second filter body is arranged on the third reel mechanism, and the second end of the second filter body is arranged on the fourth reel mechanism. The third reel mechanism and the fourth reel mechanism are arranged in linkage.

[0019] The return air channel has a first side surface and a second side surface that are opposite to each other. The third scroll mechanism is disposed on the first side surface, and the fourth scroll mechanism is disposed on the second side surface.

[0020] Along the airflow direction, the return air channel is divided into a return air section, an exhaust fan section and an exhaust section. The part of the first filter body in the return air channel is located between the return air section and the exhaust fan section, and the second filter body is located between the exhaust fan section and the exhaust section.

[0021] The number of the reel mechanisms of the first driving mechanism is two, and includes a first reel mechanism and a second reel mechanism. The first reel mechanism is arranged in the fresh air channel, and the first end of the first filter body is arranged on the first reel mechanism. The second reel mechanism is arranged in the return air channel, and the second end of the first filter body is arranged on the second reel mechanism. The first reel mechanism and the second reel mechanism are arranged in linkage, and when the first filter body is completely received in the first reel mechanism or when the second filter body is completely received in the third reel mechanism, the first filter body and the second filter body are exchanged.

[0022] A pressure difference detection mechanism is provided in the air conditioning unit, and the pressure difference detection mechanism is electrically connected to the first driving mechanism.

[0023] According to another aspect of an embodiment of the present invention, an air-conditioning unit is provided, comprising the above-mentioned filtering device.

[0024] According to another aspect of an embodiment of the present invention, a filter device control method is provided, which is applied to the above-mentioned filter device, including: detecting whether the first filter body and / or the second filter body needs to be cleaned; when cleaning is required, obtaining the total number of rotations of the scroll mechanism corresponding to the filter body; and performing a cleaning operation according to the total number of rotations.

[0025] The detection of whether the first filter body and / or the second filter body needs to be cleaned includes: detecting whether the pressure difference between the filter section of the first filter body and / or the two sides of the second filter body is greater than a preset pressure difference; if the pressure difference is greater than the preset pressure difference, it is determined that the filter body needs to be cleaned.

[0026] Performing a cleaning operation according to the total number of revolutions includes: determining whether the total number of revolutions reaches a first preset number of revolutions; if not, controlling the first filter body to move from the filtering section to the cleaning section, and controlling the second filter body to move from the first end to the second end; if reached, performing a reminder operation to interchange the filter bodies.

[0027] Controlling the first filter body to move from the filtering section to the cleaning section includes: controlling the first driving mechanism to drive the first filter body to move from the filtering section to the cleaning section; wherein the first driving mechanism includes a first scroll mechanism and a second scroll mechanism, and the first scroll mechanism and the second scroll mechanism rotate counterclockwise.

[0028] Controlling the second filter body to move from the first end to the second end includes: controlling the second driving mechanism to drive the second filter body to move from the first end to the second end; wherein, the second driving mechanism includes a third scroll mechanism and a fourth scroll mechanism, and the third scroll mechanism and the fourth scroll mechanism rotate counterclockwise.

[0029] The reminder operation is used to remind the user to interchange the second filter body collected by the fourth scroll mechanism with the first filter body collected by the second scroll mechanism; after performing the reminder operation of interchange the filter bodies, it also includes: detecting whether the second filter body collected by the fourth scroll mechanism and the first filter body collected by the second scroll mechanism are interchanged; if so, controlling the first scroll mechanism, the second scroll mechanism, the third scroll mechanism and the fourth scroll mechanism to rotate clockwise.

[0030] According to another aspect of the embodiments of the present invention, a storage medium containing computer-executable instructions is provided. When the computer-executable instructions are executed by a computer processor, the computer-executable instructions are used to perform the above-mentioned filtering device control method.

[0031] The filter device and its control method, and the air-conditioning unit provided by the present invention utilize a driving mechanism to drive the first filter body to move. When part of the first filter body in the fresh air duct needs to be cleaned, the driving mechanism can move the part into the return air duct for cleaning or move it into the second scroll mechanism for collection. The filter body in the fresh air duct can be made into a clean state without removing the filter, and when the part moves into the return air duct, the exhaust air in the return air duct can be used to blow impurities on the filter body out of the air-conditioning unit, thereby achieving the purpose of self-cleaning of the filter body by the air-conditioning unit and effectively overcoming the problem of frequent disassembly of the filter. While utilizing the second filter body to filter the indoor return air, it can also be exchanged with the first filter body so that the two filter bodies can be recycled. The self-cleaning process and the use process are carried out simultaneously without affecting the normal use of the filter. At the same time, the two scroll mechanisms can collect the filter body and ensure that the filter body between the two scroll mechanisms always maintains a flat filtration, thereby ensuring the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of an air conditioning unit and a filtering device according to an embodiment of the present invention;

[0033] Figure 2 A cross-sectional view of a reel according to an embodiment of the present invention;

[0034] Figure 3 Another cross-sectional view of a reel according to an embodiment of the present invention;

[0035] Figure 4 A cross-sectional view of a sleeve according to an embodiment of the present invention;

[0036] Figure 5 This is an optional flow chart of the filter device control method according to an embodiment of the present invention;

[0037] Figure 6 is another optional flow chart of a filter device control method according to an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Housing; 11. Fresh air duct; 12. Return air duct; 2. First filter body; 21. Filter section; 22. Cleaning section; 31. First reel mechanism; 32. Second reel mechanism; 4. Drive shaft; 5. Sleeve; 6. Connector; 7. Spring; 8. Second filter body; 9. Third reel mechanism; 10. Fourth reel mechanism; 121. Return air section; 122. Exhaust fan section; 123. Exhaust section. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] Example 1

[0042] In a preferred embodiment 1 of the present invention, a filtering device is provided. Specifically, Figures 1 to 4The filtering device shown is applied to an air conditioning unit, which includes a housing 1, wherein a fresh air passage 11 and a return air passage 12 are provided inside the housing 1. The filtering device includes: a first filter body 2, which is accommodated in the housing 1, and a portion of the first filter body 2 located in the fresh air passage 11 constitutes a filter section 21, which can filter the airflow in the fresh air passage 11, and a portion of the first filter body 2 located in the return air passage 12 constitutes a cleaning section 22, and the airflow in the return air passage 12 can clean the cleaning section 22. The first driving mechanism is arranged in the shell 1, and the first driving mechanism drives the first filter body 2 to move in the shell 1 and switch the part of the first filter body 2 that constitutes the filter section 21 and the part of the first filter body 2 that constitutes the cleaning section 22. The filter section 21 can filter the airflow in the fresh air channel 11, so that impurities in the airflow in the fresh air channel 11 can remain on the filter section 21, thereby achieving effective filtration of the airflow in the fresh air channel 11, and the airflow in the return air channel 12 and the airflow in the fresh air channel 11 pass through the first filter body. 2 is in the opposite direction, so the airflow in the return air duct 12 can blow the impurities on the cleaning section 22 out of the cleaning section 22, thereby realizing the cleaning of the first filter body 2, and then realizing the self-cleaning function of the air-conditioning unit, effectively avoiding the problem of cleaning the filter by frequent disassembly. When the filter segment 21 needs to be cleaned, the driving mechanism can drive the first filter body 2 to move, so that the filter segment 21 that needs to be cleaned is moved out of the fresh air duct 11 without filtering the airflow in the fresh air duct 11. At this time, the filter segment 21 that needs to be cleaned can be moved to the return air duct 12 to form the cleaning section 22, or be re-stored into the shell 1 to wait for cleaning. At the same time, the driving mechanism can make other parts of the first filter body 2 fill the position of the filter segment 21, thereby ensuring continuous filtration of the airflow in the fresh air duct 11 without stopping for disassembly, so that the part of the first filter body 2 that does not need to be cleaned or the part of the first filter body 2 that has completed self-cleaning is moved to the fresh air duct 11 to continue filtering, thereby ensuring the continuity of the operation of the air-conditioning unit.

[0043] When the first driving mechanism drives the first filter body 2 to move, the first filter body 2 constituting the filter segment 21 moves into the return air channel 12 to form the cleaning segment 22, so that the filter segment 21 is cleaned by the airflow in the return air channel 12, thereby realizing self-cleaning of the first filter body 2; or the first filter body 2 constituting the cleaning segment 22 moves into the fresh air channel 11 to form the filter segment 21, so that the part of the first filter body 2 cleaned by the airflow in the return air channel 12 is moved into the fresh air channel 11 for filtration, thereby ensuring continuous filtration of the airflow in the fresh air channel 11, overcoming the problem in the prior art that the air-conditioning unit needs to be disassembled and cleaned.

[0044] The first driving mechanism includes a reel mechanism, the end of the first filter body 2 is arranged on the reel mechanism, and the reel mechanism can collect or release the first filter body 2. When the reel mechanism collects the first filter body 2, the reel mechanism starts to rotate, and the first filter body 2 is wound around the reel mechanism to complete the collection. When the reel mechanism releases the first filter body 2, the reel mechanism starts to rotate in the opposite direction, and the first filter body 2 falls off from the reel mechanism to complete the release.

[0045] The number of the reel mechanisms of the first driving mechanism is two, and includes a first reel mechanism 31 and a second reel mechanism 32. The first reel mechanism 31 is arranged in the fresh air channel 11, and the first end of the first filter body 2 is arranged on the first reel mechanism 31, the second reel mechanism 32 is arranged in the return air channel 12, and the second end of the first filter body 2 is arranged on the second reel mechanism 32. The first reel mechanism 31 and the second reel mechanism 32 are arranged in linkage, that is, when the first reel mechanism 31 collects the first filter body 2, the second reel mechanism 32 releases the first filter body 2, conversely, when the second reel mechanism 32 collects the first filter body 2, the first reel mechanism 31 releases the first filter body 2, thereby ensuring the smooth movement of the first filter body 2.

[0046] The reel mechanism includes a drive shaft 4 and a sleeve 5. The drive shaft 4 is arranged in the sleeve 5, and the drive shaft 4 can drive the sleeve 5 to rotate together. The filter body is wound on the sleeve 5, and the drive shaft 4 is used to drive the sleeve 5 to rotate. At the same time, the air-conditioning unit can control the movement of the first filter body 2 by controlling the rotation of the drive shaft 4.

[0047] A mounting groove is provided at the end of the driving shaft 4, and a clip 6 and a spring 7 are provided in the mounting groove. The first end of the spring 7 abuts against the bottom surface of the mounting groove, and the clip 6 is provided on the second end of the spring, and the clip 6 has a first state of being retracted into the mounting groove and a second state of protruding from the mounting groove. When the reel mechanism needs to be disassembled, the clip 6 is squeezed to squeeze the spring 7, so that the clip 6 is retracted into the mounting groove, so that the reel mechanism can be smoothly removed from the shell 1. When the reel mechanism is installed, the reel mechanism is slid into the set position, and the clip 6 is squeezed out of the mounting groove under the elastic force of the spring 7, and slides into the corresponding groove on the shell 1 to complete the fixation of the reel mechanism.

[0048] A partition is provided between the fresh air channel 11 and the return air channel 12 . The partition is provided with a through hole. The filter body passes through the through hole. The partition is used to prevent the airflow in the fresh air channel 11 and the airflow in the return air channel 12 from being blocked.

[0049] The filtering device also includes: a second filter body 8, which is housed in the return air duct 12, and the second filter body 8 filters the airflow in the return air duct 12; a second driving mechanism, which is arranged in the return air duct 12, and the second driving mechanism can switch the part of the second filter body 8 that is in the filtering state, and use the second filter body 8 to filter the airflow in the return air duct 12. At the same time, the second driving mechanism can also drive the second filter body 8 to move, thereby replacing the part of the second filter body 8 that filters the airflow in the return air duct 12, thereby ensuring the filtering reliability of the second filter body 8.

[0050] The second driving mechanism includes a reel mechanism, the end of the second filter body 8 is arranged on the reel mechanism, and the reel mechanism can collect or release the second filter body 8. When the reel mechanism collects the second filter body 8, the reel mechanism starts to rotate, and the second filter body 8 is wound around the reel mechanism to complete the collection. When the reel mechanism releases the second filter body 8, the reel mechanism starts to rotate in the opposite direction, and the second filter body 8 falls off from the reel mechanism to complete the release.

[0051] The number of the reel mechanisms of the second driving mechanism is two, and includes a third reel mechanism 9 and a fourth reel mechanism 10. The third reel mechanism 9 and the fourth reel mechanism 10 are both arranged in the return air duct 12, and the first end of the second filter body 8 is arranged on the third reel mechanism 9, and the second end of the second filter body 8 is arranged on the fourth reel mechanism 10. The third reel mechanism 9 and the fourth reel mechanism 10 are arranged in linkage, that is, when the third reel mechanism 9 collects the second filter body 8, the fourth reel mechanism 10 releases the second filter body 8. Conversely, when the fourth reel mechanism 10 collects the second filter body 8, the third reel mechanism 9 releases the second filter body 8, thereby ensuring the smooth movement of the second filter body 8.

[0052] The return air channel 12 has a first side surface and a second side surface opposite to each other. The third scroll mechanism 9 is arranged on the first side surface, and the fourth scroll mechanism 10 is arranged on the second side surface, thereby ensuring that the second filter body 8 can completely filter the airflow in the return air channel 12 .

[0053] Along the airflow direction, the return air duct 12 is divided into a return air section 121, an exhaust fan section 122 and an exhaust section 123. The portion of the first filter body 2 in the return air duct 12 is located between the return air section 121 and the exhaust fan section 122, and the second filter body 8 is located between the exhaust fan section 122 and the exhaust section 123. The second filter body 8 is used to prevent impurities in the airflow entering from the return air section 121 from entering the exhaust fan section 122 and affecting the normal operation of structures such as the exhaust fan. The airflow passing through the exhaust fan section 122 cleans the filter section 21 and carries the blown impurities out of the air-conditioning unit through the exhaust section 123.

[0054] The number of the reel mechanisms of the first driving mechanism is two, and includes a first reel mechanism 31 and a second reel mechanism 32. The first reel mechanism 31 is arranged in the fresh air channel 11, and the first end of the first filter body 2 is arranged on the first reel mechanism 31, the second reel mechanism 32 is arranged in the return air channel 12, and the second end of the first filter body 2 is arranged on the second reel mechanism 32. The first reel mechanism 31 and the second reel mechanism 32 are arranged in linkage, and when the first filter body 2 is completely received in the first reel mechanism 31, it indicates that the first filter body 2 has been completely cleaned by the airflow in the return air channel 12 and can be reused, or when the second filter body 8 is completely received in the third reel mechanism 9, it indicates that all parts of the second filter body 8 After filtration, they need to be cleaned. The first filter body 2 is exchanged with the second filter body 8, so that the first filter body 2 is installed at the position of the second filter body 8 (between the return air section 121 and the exhaust fan section 122) for filtering, and the second filter body 8 is installed at the first filter body 2 for cleaning. Because the filtering directions of the first filter body 2 and the second filter body 8 are different, the first filter body 2 and the second filter body 8 need to be installed in reverse when exchanging the first filter body 2 and the second filter body 8, so as to ensure that the first filter body 2 can filter smoothly at the position of the second filter body 8, and at the same time, the filtering surface of the second filter body 8 can be cleaned smoothly at the position of the first filter body 2.

[0055] A pressure difference detection mechanism is provided in the air-conditioning unit, and the pressure difference detection mechanism is electrically connected to the first drive mechanism. The detection signal of the pressure difference detection mechanism is used to determine whether the filter section 21 needs to be cleaned. When the pressure difference detected by the pressure difference detection mechanism is too large, the first drive mechanism is controlled to drive the first filter body 2 to move. Similarly, the pressure difference detection mechanism is electrically connected to the second drive mechanism, and the pressure difference detection mechanism can also control the second drive mechanism to drive the second filter body 8 to move.

[0056] Example 2

[0057] Based on the filtering device provided in the above embodiment 1, a preferred embodiment 2 of the present invention further provides an air-conditioning unit including the above filtering device.

[0058] The filter device and its control method, and the air-conditioning unit provided by the present invention utilize a driving mechanism to drive the first filter body to move. When part of the first filter body in the fresh air duct needs to be cleaned, the driving mechanism can move the part into the return air duct for cleaning or move it into the second scroll mechanism for collection. The filter body in the fresh air duct can be made into a clean state without removing the filter, and when the part moves into the return air duct, the exhaust air in the return air duct can be used to blow impurities on the filter body out of the air-conditioning unit, thereby achieving the purpose of self-cleaning of the filter body by the air-conditioning unit and effectively overcoming the problem of frequent disassembly of the filter. While utilizing the second filter body to filter the indoor return air, it can also be exchanged with the first filter body so that the two filter bodies can be recycled. The self-cleaning process and the use process are carried out simultaneously without affecting the normal use of the filter. At the same time, the two scroll mechanisms can collect the filter body and ensure that the filter body between the two scroll mechanisms always maintains a flat filtration, thereby ensuring the filtering effect.

[0059] Example 3

[0060] In a preferred embodiment 3 of the present invention, a filter device control method is provided, which is applied to the filter device in the above embodiment 1. Specifically, Figure 5 An optional flow chart of the method is shown as follows: Figure 5 As shown, the method includes the following steps S502-S506:

[0061] S502: Detect whether the first filter body and / or the second filter body need to be cleaned;

[0062] S504: When cleaning is required, obtaining the total number of revolutions of the scroll mechanism corresponding to the filter body;

[0063] S506: Perform a cleaning operation according to the total number of rotations.

[0064] The filter device and its control method, and the air-conditioning unit provided by the present invention utilize a driving mechanism to drive the first filter body to move. When part of the first filter body in the fresh air duct needs to be cleaned, the driving mechanism can move the part into the return air duct for cleaning or move it into the second scroll mechanism for collection. The filter body in the fresh air duct can be made into a clean state without removing the filter, and when the part moves into the return air duct, the exhaust air in the return air duct can be used to blow impurities on the filter body out of the air-conditioning unit, thereby achieving the purpose of self-cleaning of the filter body by the air-conditioning unit and effectively overcoming the problem of frequent disassembly of the filter. While utilizing the second filter body to filter the indoor return air, it can also be exchanged with the first filter body so that the two filter bodies can be recycled. The self-cleaning process and the use process are carried out simultaneously without affecting the normal use of the filter. At the same time, the two scroll mechanisms can collect the filter body and ensure that the filter body between the two scroll mechanisms always maintains a flat filtration, thereby ensuring the filtering effect.

[0065] Detecting whether the first and / or second filter bodies need cleaning includes: detecting whether the pressure differential across the filter section of the first filter body and / or the second filter body is greater than a preset pressure differential; if the pressure differential is greater than the preset pressure differential, determining that the filter bodies need cleaning. The specific cleaning operation includes: determining whether the total number of revolutions has reached a first preset number of revolutions; reaching the first preset number of revolutions indicates that the filter element has been fully unwound; if not, controlling the first filter body to move from the filter section to the cleaning section and controlling the second filter body to move from the first end to the second end; if reached, prompting an exchange of filter bodies.

[0066] Units such as Figure 1 The figure shows normal operation. After the unit has been running for a while, dust accumulates on the left side of filter section 21 and on the right side of second filter body 8. When the differential pressure gauge detects that the pressure difference between 21 and 8 exceeds the set value, the filter reel rotates, and filter section 21 moves up to the upper layer 22. Backwashing is performed after the exhaust fan, and the dust is discharged from the unit through the exhaust section. The lower reel rotates out a new filter element. The filter element of second filter body 8 is then reeled in by the lower reel, and the upper reel rotates out a new filter element. In this way, the filter element in the unit is replaced and backwashed.

[0067] Controlling the first filter body to move from the filtering section to the cleaning section includes: controlling the first drive mechanism to drive the first filter body to move from the filtering section to the cleaning section; wherein the first drive mechanism includes a first reel mechanism and a second reel mechanism, and the first and second reel mechanisms rotate counterclockwise. Controlling the second filter body to move from the first end to the second end includes: controlling the second drive mechanism to drive the second filter body to move from the first end to the second end; wherein the second drive mechanism includes a third reel mechanism and a fourth reel mechanism, and the third and fourth reel mechanisms rotate counterclockwise.

[0068] The reminder operation is used to remind the user to interchange the second filter body collected by the fourth scroll mechanism with the first filter body collected by the second scroll mechanism; after performing the reminder operation of interchange the filter bodies, it also includes: detecting whether the second filter body collected by the fourth scroll mechanism and the first filter body collected by the second scroll mechanism are interchanged; if so, controlling the first scroll mechanism, the second scroll mechanism, the third scroll mechanism and the fourth scroll mechanism to rotate clockwise.

[0069] When all the filter elements in the fresh air section reel are rotated out or all the filter elements in the return air section reel are rotated out, the filter elements rolled in by the reels 31 and 10 in the two filter sections need to be interchanged. After the interchange, the filter element of the reel 31 is moved downward, and the dust attached to the filter element is blown out at the cleaning section 22 and moved to the filter section 21 to continue filtering, and the cycle is repeated.

[0070] At the same time, compared with ordinary louver dampers, it has a smaller thickness and is not restricted by large air volume and large-size air outlet conditions. It does not need to be split into multiple dampers, effectively reducing material consumption and installation difficulty.

[0071] Another preferred embodiment 3 of the present invention provides another method for controlling a filter device. Specifically, Figure 6 An optional flow chart of the method is shown as follows: Figure 6 As shown, the method includes the following steps S601-S609:

[0072] S601: Start;

[0073] S602: Check whether the pressure difference of the filter section 21 exceeds the set value?

[0074] S603: If yes, check whether the total number of rotations of the first reel mechanism 31 and the second reel mechanism 32 reaches a set value.

[0075] S604: If the set value is not reached, the first reel mechanism 31 and the second reel mechanism 32 rotate clockwise by a specified number of revolutions and record the number.

[0076] S605: Check whether the pressure difference of the second filter body 8 exceeds the set value?

[0077] S606: If yes, check whether the total number of rotations of the third reel mechanism 9 and the fourth reel mechanism 10 reaches the set value?

[0078] S607: If the set value is not reached, the third reel mechanism 9 and the fourth reel mechanism 10 rotate clockwise for a specified number of revolutions and record the result.

[0079] S608: If the set value is reached, an alarm will sound to remind you to replace the filter element.

[0080] S609: End.

[0081] The driving mechanism is used to drive the first filter body to move. When part of the first filter body in the fresh air channel needs to be cleaned, the driving mechanism can move the part into the return air channel for cleaning or move it into the second scroll mechanism for collection. The filter body in the fresh air channel can be cleaned without removing the filter, and when the part moves into the return air channel, the exhaust air in the return air channel can be used to blow impurities on the filter body out of the air-conditioning unit, thereby achieving the purpose of self-cleaning of the filter body by the air-conditioning unit and effectively overcoming the problem of frequent disassembly of the filter. While using the second filter body to filter the indoor return air, it can also be exchanged with the first filter body so that the two filter bodies can be recycled. The self-cleaning process and the use process are carried out simultaneously without affecting the normal use of the filter. At the same time, the two scroll mechanisms can collect the filter body and ensure that the filter body between the two scroll mechanisms always maintains a flat filtration to ensure the filtering effect.

[0082] Example 4

[0083] Based on the filter device control method provided in the above embodiment 3, a preferred embodiment 4 of the present invention further provides a storage medium containing computer executable instructions, which are used to execute the filter device control method as described above when executed by a computer processor.

[0084] The above embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A filtering device, characterized in that: Applicable to an air conditioning unit, the air conditioning unit comprises a housing (1), a fresh air channel (11) and a return air channel (12) are provided inside the housing (1), and the filtering device comprises: a first filter body (2), the first filter body (2) being accommodated in the housing (1), and a portion of the first filter body (2) located in the fresh air passage (11) constituting a filter section (21), the filter section (21) being capable of filtering the airflow in the fresh air passage (11), and a portion of the first filter body (2) located in the return air passage (12) constituting a cleaning section (22), the airflow in the return air passage (12) being capable of cleaning the cleaning section (22); A first drive mechanism is provided in the housing (1), and the first drive mechanism drives the first filter body (2) to move in the housing (1) and switches between the portion of the first filter body (2) constituting the filtering section (21) and the portion of the first filter body (2) constituting the cleaning section (22); The first driving mechanism comprises a reel mechanism, the end of the first filter body (2) is arranged on the reel mechanism, and the reel mechanism is capable of collecting or releasing the first filter body (2); a second filter body (8), the second filter body (8) being received in the return air passage (12), and the second filter body (8) filtering the airflow in the return air passage (12); The number of the reel mechanisms of the first driving mechanism is two, and they include a first reel mechanism (31) and a second reel mechanism (32). The first reel mechanism (31) is arranged in the fresh air channel (11), and the first end of the first filter body (2) is arranged on the first reel mechanism (31). The second reel mechanism (32) is arranged in the return air channel (12), and the second end of the first filter body (2) is arranged on the second reel mechanism (32). The first reel mechanism (31) and the second reel mechanism (32) are arranged in linkage, and when the first filter body (2) is completely received in the first reel mechanism (31), the first filter body (2) is exchanged with the second filter body (8).

2. The filtering device according to claim 1, characterized in that: When the first driving mechanism drives the first filter body (2) to move, the first filter body (2) constituting the filter section (21) moves into the return air channel (12) to form the clean section (22); or the first filter body (2) constituting the clean section (22) moves into the fresh air channel (11) to form the filter section (21).

3. The filtering device according to claim 1, characterized in that: The number of the reel mechanisms of the first driving mechanism is two, and they include a first reel mechanism (31) and a second reel mechanism (32); the first reel mechanism (31) is arranged in the fresh air passage (11), and the first end of the first filter body (2) is arranged on the first reel mechanism (31); the second reel mechanism (32) is arranged in the return air passage (12), and the second end of the first filter body (2) is arranged on the second reel mechanism (32); the first reel mechanism (31) and the second reel mechanism (32) are arranged in a linkage manner.

4. The filtering device according to claim 1, characterized in that: The reel mechanism comprises a drive shaft (4) and a sleeve (5); the drive shaft (4) is arranged in the sleeve (5), and the drive shaft (4) can drive the sleeve (5) to rotate together; the filter body is wound on the sleeve (5).

5. The filtering device according to claim 4, characterized in that: The end of the drive shaft (4) is provided with a mounting groove, and a clamping member (6) and a spring (7) are provided in the mounting groove. The first end of the spring (7) abuts against the bottom surface of the mounting groove, and the clamping member (6) is provided on the second end of the spring. The clamping member (6) has a first state of being retracted into the mounting groove and a second state of being protruded from the mounting groove.

6. The filtering device according to claim 1, characterized in that: A partition is provided between the fresh air channel (11) and the return air channel (12), and a through hole is provided on the partition, through which the filter body passes.

7. The filtering device according to claim 1, characterized in that: The filtering device further comprises: A second driving mechanism, wherein the second driving mechanism is arranged in the return air channel (12), and the second driving mechanism is capable of switching the portion of the second filter body (8) that is in a filtering state.

8. The filtering device according to claim 7, characterized in that: The second driving mechanism comprises a reel mechanism, the end of the second filter body (8) is arranged on the reel mechanism, and the reel mechanism is capable of collecting or releasing the second filter body (8).

9. The filtering device according to claim 8, characterized in that: The number of the reel mechanisms of the second driving mechanism is two, and includes a third reel mechanism (9) and a fourth reel mechanism (10). The third reel mechanism (9) and the fourth reel mechanism (10) are both arranged in the return air channel (12), and the first end of the second filter body (8) is arranged on the third reel mechanism (9), and the second end of the second filter body (8) is arranged on the fourth reel mechanism (10). The third reel mechanism (9) and the fourth reel mechanism (10) are arranged in a linkage manner.

10. The filtering device according to claim 9, characterized in that: The return air channel (12) has a first side surface and a second side surface that are opposite to each other; the third scroll mechanism (9) is arranged on the first side surface; and the fourth scroll mechanism (10) is arranged on the second side surface.

11. The filtering device according to claim 7, characterized in that: Along the airflow direction, the return air channel (12) is divided into a return air section (121), an exhaust fan section (122) and an exhaust section (123); the portion of the first filter body (2) located in the return air channel (12) is located between the return air section (121) and the exhaust fan section (122); and the second filter body (8) is located between the exhaust fan section (122) and the exhaust section (123).

12. The filtering device according to claim 1, characterized in that: A pressure difference detection mechanism is provided in the air conditioning unit, and the pressure difference detection mechanism is electrically connected to the first driving mechanism.

13. An air conditioning unit, characterized in that: A filter device comprising the filter device according to any one of claims 1 to 12.

14. A filter device control method, applied to the filter device according to any one of claims 1 to 12, characterized in that: include: Detecting whether the first filter body and / or the second filter body need to be cleaned; When cleaning is required, the total number of revolutions of the scroll mechanism corresponding to the filter body is obtained; A cleaning operation is performed according to the total number of rotations.

15. The method according to claim 14, characterized in that The detecting whether the first filter body and / or the second filter body needs to be cleaned includes: Detecting whether the pressure difference between the filter section of the first filter body and / or both sides of the second filter body is greater than a preset pressure difference; If the pressure difference is greater than the preset pressure difference, it is determined that the filter body needs to be cleaned.

16. The method according to claim 15, characterized in that Performing a cleaning operation according to the total number of revolutions includes: determining whether the total number of revolutions reaches a first preset number of revolutions; If the value is not reached, the first filter body is controlled to move from the filtering section to the cleaning section, and the second filter body is controlled to move from the first end to the second end; If reached, perform reminder operation to interchange filter bodies.

17. The method according to claim 16, characterized in that The controlling the first filter body to move from the filtering section to the cleaning section includes: The first driving mechanism is controlled to drive the first filter body to move from the filtering section to the cleaning section; wherein the first driving mechanism includes a first reel mechanism and a second reel mechanism, and the first reel mechanism and the second reel mechanism rotate counterclockwise.

18. The method according to claim 17, characterized in that The controlling the second filter body to move from the first end to the second end includes: The second driving mechanism is controlled to drive the second filter body to move from the first end to the second end; wherein, the second driving mechanism includes a third scroll mechanism and a fourth scroll mechanism, and the third scroll mechanism and the fourth scroll mechanism rotate counterclockwise.

19. The method according to claim 18, characterized in that The reminder operation is used to remind the user to swap the second filter body collected by the fourth scroll mechanism with the first filter body collected by the second scroll mechanism; after the reminder operation of swapping the filter bodies is performed, the method further includes: detecting whether the second filter body collected by the fourth reel mechanism and the first filter body collected by the second reel mechanism are interchangeable; If so, the first reel mechanism, the second reel mechanism, the third reel mechanism and the fourth reel mechanism are controlled to rotate clockwise.

20. A storage medium containing computer-executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, the computer executable instructions are used to perform the filtering device control method according to any one of claims 14 to 19 .

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