A filter assembly, a filter device, a fresh air module and a fresh air air conditioner

Abstract

The application provides a filter assembly, a filter device, a fresh air module and a fresh air conditioner. The filter assembly comprises a driving mechanism and a plurality of filter units. The plurality of filter units are sequentially arranged in an air duct along a driving axis of the driving mechanism. Each filter unit comprises a fixed arm and a rotating arm extending along a radial direction of the driving axis. The rotating arm is rotatable relative to the fixed arm about the driving axis. A filter screen is arranged between the fixed arm and the rotating arm. When the air quality is poor, the rotating arm is in an unfolded position, the filter screen is unfolded in the air duct, and the filter screen can filter the air flowing therethrough. Each filter screen in the plurality of filter units has different air treatment functions or has the same air treatment function but different treatment levels. According to the air quality, the corresponding filter screen is unfolded to gradually treat the air and improve the treatment accuracy. When the air quality is good, the rotating arm is in a collection position, the filter screen is collected on a reel, and the attenuation effect of the filter screen on the air flow is reduced.

Description

Technical Field

[0001] This invention belongs to the field of air filtration technology, and particularly relates to a filter component, a filter device, a fresh air module, and a fresh air air conditioner. Background Technology

[0002] As living standards improve, people have higher requirements for indoor air quality and health comfort. Existing ventilation equipment mainly uses filters to filter particulate matter in the air; however, on the one hand, filters reduce airflow while filtering air, resulting in reduced air volume; on the other hand, the filtration capacity of filters is fixed, making it impossible to flexibly select suitable filters according to air quality, leading to poor filtration effect and high filter consumption. Summary of the Invention

[0003] In view of this, the present invention provides a filter component, a filter device, a fresh air module, and a fresh air air conditioner to solve the problems in the prior art, such as the attenuation effect of the filter screen on the air, which reduces the air flow, and the filter screen's filtration capacity not matching the air quality, resulting in poor filtration effect and high filter screen consumption.

[0004] This invention provides a filter assembly for a ventilation device having an air duct. The filter assembly includes a drive mechanism and multiple filter units; each filter unit includes:

[0005] A fixed arm and a rotating arm, both extending radially along the drive axis of the drive mechanism; wherein the fixed arm is fixed in a certain radial direction of the drive axis and cannot rotate, and the rotating arm can rotate relative to the fixed arm about the drive axis; one of the fixed arm and the rotating arm is rotatably provided with a scroll.

[0006] A filter screen, one end of which is connected to a roller, and the other end of which is connected to an arm without the roller; the filter screen is unfolded and collected by the rotation of the rotating arm relative to the fixed arm.

[0007] The rotating arm has an unfolded position and a collecting position in its rotation direction. When the rotating arm is in the unfolded position, the filter screen is unfolded inside the air duct; when the rotating arm is in the collecting position, the filter screen is collected on the roller.

[0008] In the plurality of filter units, each filter screen has different air handling functions or has the same air handling function but different handling levels, and the rotating arm of each filter unit can be controlled to rotate independently.

[0009] Further optionally, in each of the filtering units, the filter screen is a collectable arc-shaped structure, and the spool and the arm without a spool have equal arm lengths.

[0010] Further optionally, the air handling rating of multiple filters in the plurality of said filter units gradually increases along one of the directions of said drive axis.

[0011] Further optionally, the drive mechanism includes a motor and multiple spindles; the multiple spindles are sleeved together with the drive axis as the center line, and each spindle can be driven individually by the motor;

[0012] Multiple spindles are arranged in a one-to-one correspondence with multiple filter units; the spindles are fixedly connected to the rotating arms of the corresponding filter units.

[0013] Further optionally, in each of the filter units, the fixing arm includes a fixing core, a fixing radial wall A and a fixing radial wall B, the fixing core is coaxially arranged with the drive axis, and the fixing radial wall A and the fixing radial wall B are spaced apart circumferentially along the fixing core and located in the same diametrical direction of the fixing core.

[0014] The rotating arm includes a rotating core seat, a rotating radial wall a, and a rotating radial wall b. The rotating core seat is coaxially arranged with the drive axis and rotatably mounted on the fixed core seat. The rotating radial walls a and b are spaced apart along the circumference of the rotating core seat and are located in the same diametrical direction of the rotating core seat.

[0015] When the rotating center seat rotates relative to the fixed center seat, the rotating radial wall a can rotate relative to the fixed radial wall A, and the rotating radial wall b can rotate relative to the fixed radial wall B.

[0016] Further optionally, the filter screen includes filter screen Aa and filter screen Bb, wherein filter screen Aa is disposed between the fixed radial wall A and the rotating radial wall a, and filter screen Bb is disposed between the fixed radial wall B and the rotating radial wall b;

[0017] When filter Aa and filter Bb are deployed, filter Aa and filter Bb can cover the cross-section of the air duct.

[0018] Further optionally, the fixed core seat forms a fixed shaft hole; the rotating core seat forms a rotating shaft hole, and the inner sidewall of the rotating shaft hole forms a rotating arm connecting portion;

[0019] The outer side wall of the main shaft has a main shaft connecting part; the main shaft passes through the fixed shaft hole and the rotating shaft hole and the main shaft is clearance-fitted with the fixed shaft hole; the rotating arm connecting part cooperates with the main shaft connecting part to fix the main shaft to the rotating center seat.

[0020] Further optionally, each of the filter units includes a fixed arm and a rotating arm; the plurality of filter units include a first fixed arm, a first rotating arm, a second fixed arm, a second rotating arm, a third fixed arm and a third rotating arm arranged sequentially along the extension direction of the air duct; the first rotating arm can rotate relative to the first fixed arm, the second rotating arm can rotate relative to the second fixed arm, and the third rotating arm can rotate relative to the third fixed arm;

[0021] The main shaft includes a first main shaft, a second main shaft, and a third main shaft; both the first and second main shafts are hollow structures; the first, second, and third main shafts are nested sequentially from the outside to the inside along the radial direction of the first main shaft; the first main shaft is fixedly connected to a first rotating arm, the second main shaft is fixedly connected to a second rotating arm, and the third main shaft is fixedly connected to a third rotating arm.

[0022] The present invention also provides a filtration device, including a filter housing and a filtration assembly as described in any of the above claims; the filter housing forms the air duct, the cross-section of the air duct is circular; the drive axis is collinear with the axis of the air duct, and a plurality of the filtration units are sequentially arranged in the air duct along the axis of the air duct.

[0023] Further optionally, an annular groove is formed on the inner wall of the air duct, and the position of the annular groove corresponds to the position of the rotating arm in the axial direction of the air duct; one end of the rotating arm near the inner wall of the air duct is rotatably disposed in the annular groove.

[0024] The present invention also provides a fresh air module, including a fresh air housing and a filter device as described in any of the above claims, wherein the fresh air housing has a fresh air inlet; the filter device is disposed at the fresh air inlet, and the air duct is connected to the fresh air inlet.

[0025] The present invention also provides a fresh air air conditioner, including an indoor unit body and the aforementioned fresh air module, wherein the fresh air module is disposed on one side of the indoor unit body.

[0026] Compared with the prior art, the main advantages of the present invention are as follows:

[0027] When the air quality is poor, the filter screen is unfolded inside the air duct, so that the filter screen can filter the air flowing through it and improve the air quality; when the air quality is good, the filter screen is collected on the roller, reducing the attenuation effect of the filter screen on the air flow and reducing the loss of air flow.

[0028] In multiple filter units, each filter has different air handling functions or the same air handling function but different treatment levels. When the air quality is poor, the filter with the appropriate treatment function is opened to filter, sterilize, and deodorize the air, or the air is treated step by step with the same function to improve the treatment accuracy and effect, while reducing filter consumption and extending filter life. The filter components have a wide range of applications and can meet different air handling needs to obtain air of different qualities. Attached Figure Description

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0031] Figure 1a and Figure 1b A schematic diagram of the axial structure of an embodiment of the filtration device provided by the present invention;

[0032] Figure 2a and Figure 2b This is a schematic cross-sectional view of an embodiment of the filtration device provided by the present invention;

[0033] Figure 3 This is a partial cross-sectional structural schematic diagram of an embodiment of the filtration device provided by the present invention;

[0034] Figure 4a A schematic diagram of an embodiment of the filtration device provided by the present invention when the filter screen is in the collection state;

[0035] Figure 4b A schematic diagram of an embodiment of the filtering device provided by the present invention when the filter screen is in a semi-expanded state;

[0036] Figure 4c A schematic diagram of an embodiment of the filtering device provided by the present invention when the filter screen is in the unfolded state;

[0037] Figure 5A schematic diagram of the structure of an embodiment of the motor provided by the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of a fresh air module embodiment provided by the present invention;

[0039] In the picture:

[0040] 11-First fixed arm; 111-First fixed radial wall A; 112-First fixed radial wall B; 113-First fixed core seat; 114-First fixed shaft hole; 12-First rotating arm; 121-First rotating radial wall a; 122-First rotating radial wall b; 123-First rotating core seat; 124-First rotating shaft hole;

[0041] 21-Second fixed arm; 211-Second fixed radial wall A; 212-Second fixed radial wall B; 213-Second fixed core seat; 214-Second fixed shaft hole; 22-Second rotating arm; 221-Second rotating radial wall a; 222-Second rotating radial wall b; 223-Second rotating core seat; 224-Second rotating shaft hole;

[0042] 31-Third fixed arm; 311-Third fixed radial wall A; 312-Third fixed radial wall B; 313-Third fixed core seat; 314-Third fixed shaft hole; 32-Third rotating arm; 321-Third rotating radial wall a; 322-Third rotating radial wall b; 323-Third rotating core seat; 324-Third rotating shaft hole;

[0043] 4-Filter housing; 41-Air duct; 421-First annular groove; 422-Second annular groove; 423-Third annular groove;

[0044] 51-Filter Aa; 52-Filter Bb;

[0045] 6-Motor; 61-First spindle; 611-First spindle connecting part; 62-Second spindle; 621-Second spindle connecting part; 63-Third spindle; 631-Third spindle connecting part;

[0046] 7-Fresh air module; 71-Fresh air housing; 711-Fresh air inlet. Detailed Implementation

[0047] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0049] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0051] Existing ventilation equipment mainly uses filters to filter particulate matter in the air; however, on the one hand, filters reduce airflow while filtering air, resulting in a decrease in airflow; on the other hand, the filtration capacity of filters is fixed, and it is impossible to flexibly select a suitable filter according to air quality, resulting in poor filtration effect and high filter consumption.

[0052] This invention creatively provides a filter assembly for a ventilation device. The ventilation device has an air duct, and the filter assembly includes a drive mechanism and multiple filter units, which are sequentially arranged within the air duct along the drive axis of the drive mechanism. Each filter unit includes a fixed arm, a rotating arm, and a filter screen. Both the fixed arm and the rotating arm extend radially along the drive axis of the drive mechanism. The fixed arm is fixed in a certain radial direction of the drive axis and cannot rotate, while the rotating arm can rotate relative to the fixed arm around the drive axis. A roller is rotatably provided on one of the fixed arm and the rotating arm. One end of the filter screen is connected to the roller, and the other end of the filter screen is connected to the arm without a roller. The rotation of the rotating arm relative to the fixed arm can cause the filter screen to unfold within the air duct or to be collected on the roller.

[0053] The rotating arm has an extended position and a collection position in its rotation direction. When the rotating arm is in the extended position, the filter screen is extended into the air duct; when the rotating arm is in the collection position, the filter screen is collected on the roller. When the air quality is poor, the filter screen is extended into the air duct, so that the filter screen can filter the air flowing through it and improve the air quality. When the air quality is good, the filter screen is collected on the roller, reducing the attenuation effect of the filter screen on the air flow and reducing the loss of air flow.

[0054] In multiple filter units, each filter screen has different air handling functions or the same air handling function but different handling levels, and the rotating arm of each filter unit can be controlled to rotate independently; when the air quality is poor, the filter screen with the handling function adapted to the air quality is opened to filter, sterilize and deodorize the air, or the air is treated step by step with the same handling function to improve the handling accuracy and effect, while reducing filter screen consumption and extending the service life of the filter screen; the filter components have a wide range of applications and can meet different air handling needs to obtain air of different qualities.

[0055] <Filtering Components>

[0056] like Figures 1a to 5 As shown, this embodiment provides a filter assembly for a ventilation device, the ventilation device having an air duct 41; preferably, the ventilation device is a fresh air module or a fresh air air conditioner; the filter assembly includes a drive mechanism and multiple filter units, each filter unit including:

[0057] A fixed arm and a rotating arm are provided, both extending radially along the drive axis of the drive mechanism. The fixed arm is fixed in a certain radial direction of the drive axis and cannot rotate, while the rotating arm can rotate relative to the fixed arm about the drive axis. A reel is rotatably provided in one of the fixed arm and the rotating arm. Specifically, the rotating arm forms a cavity, and the reel is rotatably disposed within the cavity. The extension direction of the reel is consistent with the extension direction of the rotating arm. A coil spring is provided between the reel and the side wall of the cavity, and the coil spring can drive the reel to rotate when it releases energy. A through hole is formed on the side of the rotating arm facing the fixed arm, and the through hole communicates with the cavity. The reel and the arm without the reel have equal arm lengths. Preferably, the fixed arm and the rotating arm have equal arm lengths.

[0058] The filter screen has one end connected to a roller and the other end connected to an arm without a roller. The filter screen is unfolded and collected by the rotation of the rotating arm relative to the fixed arm. The rotating arm has an unfolded position and a collected position in its rotation direction. When the rotating arm is in the unfolded position, the filter screen is unfolded in the air duct 41. When the rotating arm is in the collected position, the filter screen is collected on the roller. Specifically, one end of the filter screen passes through the through hole and is rolled on the roller, and the other end of the filter screen is connected to the fixed arm. When the rotating arm rotates relative to the fixed arm and moves away from the fixed arm, one end of the filter screen gradually unfolds, the coil spring stores energy, and the filter screen unfolds in the air duct 41. At this time, the filter screen can filter the air flowing through the air duct 41. When the rotating arm rotates relative to the fixed arm and moves closer to the fixed arm, the coil spring releases energy, and one end of the filter screen gradually rolls on the roller. The filter screen is collected on the roller, and the air flows through the air duct 41 without passing through the filter screen. Preferably, the filter screen of each filter unit is a collectable arc-shaped structure.

[0059] Multiple filter units are arranged sequentially along the drive axis within the air duct 41; among the multiple filter units, each filter screen has different air handling functions or has the same air handling function but different handling levels; specifically, each filter screen has filtration capacity and each filter screen has a different filtration level.

[0060] Furthermore, the rotating arm of each filter unit can be controlled to rotate independently; thus, according to the air quality, a corresponding number of rotating arms can be rotated, and a corresponding number of filters can be deployed to filter the air; for example, when the air quality is poor, one rotating arm can be rotated, and one filter can be deployed to perform preliminary filtration of the air; when the air quality is relatively poor, multiple rotating arms can be rotated, and multiple filters with different filtration levels can be deployed to perform step-by-step filtration of the air, reducing filter consumption and extending filter life.

[0061] Preferably, along the drive axis direction, the air handling capacity of multiple filters in the multiple filter units gradually increases along one of the directions of the drive axis.

[0062] To address the issue of complex structures in the drive mechanisms required for rotating the arms of multiple filter units, this embodiment proposes a drive mechanism comprising a motor 6 and multiple main shafts. These main shafts are nested together around a drive axis, and each can be driven individually by the motor 6. Specifically, the motor 6 contains multiple independently rotating gears, each gear corresponding to one of the main shafts. When a gear rotates, the corresponding main shaft can rotate.

[0063] Multiple spindles are set up one-to-one with multiple filter units; the spindles are fixedly connected to the rotating arms of the corresponding filter units.

[0064] To address the issue of complex structures required for the rotating arm to rotate relative to the fixed arm, this embodiment proposes that in each filter unit, the fixed arm includes a fixed core seat, a fixed radial wall A, and a fixed radial wall B. The fixed core seat is coaxially arranged with the drive axis, and the fixed radial walls A and B are spaced apart circumferentially along the fixed core seat and located in the same diametrical direction of the fixed core seat.

[0065] The rotating arm includes a rotating core seat, a rotating radial wall a, and a rotating radial wall b. The rotating core seat is coaxially arranged with the drive axis and rotatably mounted on the fixed core seat. The rotating radial walls a and b are spaced apart along the circumference of the rotating core seat and are located in the same diametrical direction of the rotating core seat. The rotating radial wall a is corresponding to the fixed radial wall A, and the rotating radial wall b is corresponding to the fixed radial wall B.

[0066] When the rotating center seat rotates relative to the fixed center seat, the rotating radial wall a rotates relative to the fixed radial wall A, and the rotating radial wall b rotates relative to the fixed radial wall B.

[0067] Furthermore, the scroll includes scroll a and scroll b; the rotating radial wall a forms a cavity a, and the scroll a is rotatably disposed within the cavity a, with the extension direction of the scroll a being the same as the extension direction of the rotating radial wall a; a coil spring a is disposed between the scroll a and the side wall of the cavity a; the rotating radial wall b forms a cavity b, and the scroll b is rotatably disposed within the cavity b, with the extension direction of the scroll b being the same as the extension direction of the rotating radial wall b; a coil spring b is disposed between the scroll b and the side wall of the cavity b.

[0068] The filter screen includes filter screen Aa 51 and filter screen Bb 52. Filter screen Aa 51 is disposed between the fixed radial wall A and the rotating radial wall a. Specifically, one end of filter screen Aa 51 is connected to the roller a, and the other end of filter screen Aa 51 is connected to the fixed radial wall A. When the rotating radial wall a rotates relative to the fixed radial wall A and moves away from the fixed radial wall A, filter screen Aa 51 unfolds, and the coil spring a stores energy. When the rotating radial wall a rotates relative to the fixed radial wall A and moves closer to the fixed radial wall A, the coil spring a releases energy, and filter screen Aa 51 is collected on the roller a.

[0069] A filter screen Bb 52 is disposed between a fixed radial wall B and a rotating radial wall b. Specifically, one end of the filter screen Bb 52 is connected to a scroll b, and the other end of the filter screen Bb 52 is connected to the fixed radial wall B. When the rotating radial wall b rotates relative to the fixed radial wall B and moves away from the fixed radial wall B, the filter screen Bb 52 unfolds, and the spring b stores energy. When the rotating radial wall b rotates relative to the fixed radial wall B and moves closer to the fixed radial wall B, the spring b releases energy, and the filter screen Bb 52 is collected on the scroll b.

[0070] When both filter screen Aa 51 and filter screen Bb 52 are deployed, filter screen Aa 51 and filter screen Bb 52 can cover the cross-section of air duct 41, thereby filter the air flowing through air duct 41.

[0071] Preferably, both filter screen Aa 51 and filter screen Bb 52 have a fan-shaped structure.

[0072] To address the issue of complex structures required for driving the rotating arm, this embodiment proposes that a fixed core seat forms a fixed shaft hole; a rotating core seat forms a rotating shaft hole, and a rotating arm connecting part is formed on the inner sidewall of the rotating shaft hole;

[0073] The outer side wall of the main shaft has a main shaft connecting part; the main shaft passes through the fixed shaft hole and the rotating shaft hole and the main shaft is clearance-fitted with the fixed shaft hole, and the rotating arm connecting part is fitted with the main shaft connecting part to drive the main shaft to the rotating core seat; when the motor 6 runs, the main shaft drives the corresponding rotating core seat to rotate, and then the rotating arm rotates relative to the fixed arm.

[0074] Furthermore, each filter unit includes a fixed arm and a rotating arm; the multiple filter units include a first fixed arm 11, a first rotating arm 12, a second fixed arm 21, a second rotating arm 22, a third fixed arm 31, and a third rotating arm 32 arranged sequentially along the drive axis direction (when the multiple filter units are installed on the air duct, the drive axis direction is the extension direction of the air duct 41); the first rotating arm 12 can rotate relative to the first fixed arm 11, the second rotating arm 22 can rotate relative to the second fixed arm 21, and the third rotating arm 32 can rotate relative to the third fixed arm 31;

[0075] like Figure 2a and Figure 2b As shown, the drive mechanism includes a first spindle 61, a second spindle 62, and a third spindle 63 that can be controlled to rotate independently; the motor 6 is equipped with a first gear, a second gear, and a third gear. The first gear is driven to the first spindle 61, the second gear is driven to the second spindle 62, and the third gear is driven to the third spindle 63.

[0076] Both the first main shaft 61 and the second main shaft 62 are hollow structures; along the radial direction of the first main shaft 61 from the outside to the inside, the first main shaft 61, the second main shaft 62 and the third main shaft 63 are nested in sequence and coaxially arranged; the first main shaft 61 is fixedly connected to the first rotating arm 12, the second main shaft 62 is fixedly connected to the second rotating arm 22, and the third main shaft 63 is fixedly connected to the third rotating arm 32.

[0077] Specifically, ① the first fixed arm 11 includes a first fixed core seat 113, a first fixed radial wall A 111 and a first fixed radial wall B 112. The first fixed core seat 113 is coaxially arranged with the drive shaft. The first fixed radial wall A 111 and the first fixed radial wall B 112 are spaced apart along the circumference of the first fixed core seat 113 and are located in the same diametrical direction of the first fixed core seat 113.

[0078] The first rotating arm 12 includes a first rotating center seat 123, a first rotating radial wall a 121, and a first rotating radial wall b 122. The first rotating center seat 123 is coaxially arranged with the drive axis and rotatably mounted on a first fixed center seat 113. The first rotating radial walls a 121 and b 122 are spaced apart circumferentially along the first rotating center seat 123 and located in the same diametrical direction of the first rotating center seat 123. The first rotating radial wall a 121 is correspondingly arranged with the first fixed radial wall A 111, and the first rotating radial wall b 122 is correspondingly arranged with the first fixed radial wall B 112.

[0079] When the first rotating center seat 123 rotates relative to the first fixed center seat 113, the first rotating radial wall a 121 rotates relative to the first fixed radial wall A 111, and the first rotating radial wall b 122 rotates relative to the first fixed radial wall B 112.

[0080] The filter screen includes a first filter screen, which comprises filter screen Aa1 and filter screen Bb1. Filter screen Aa1 is disposed between a first fixed radial wall A 111 and a first rotating radial wall a 121. The first rotating radial wall a 121 rotates relative to the first fixed radial wall A 111, allowing filter screen Aa1 to unfold within the air duct 41 or be collected on a corresponding scroll. Filter screen Bb1 is disposed between a first fixed radial wall B 112 and a first rotating radial wall b 122. The first rotating radial wall b 122 rotates relative to the first fixed radial wall B 112, allowing filter screen Bb2 to unfold within the air duct 41 or be collected on a corresponding scroll.

[0081] ②The second fixed arm 21 includes a second fixed core seat 213, a second fixed radial wall A 211 and a second fixed radial wall B 212. The second fixed core seat 213 is coaxially arranged with the drive shaft. The second fixed radial wall A 211 and the second fixed radial wall B 212 are spaced apart along the circumference of the second fixed core seat 213 and are located in the same diametrical direction of the second fixed core seat 213.

[0082] The second rotating arm 22 includes a second rotating center seat 223, a second rotating radial wall a 221, and a second rotating radial wall b 222. The second rotating center seat 223 is coaxially arranged with the drive axis and rotatably mounted on the second fixed center seat 213. The second rotating radial wall a 221 and the second rotating radial wall b 222 are spaced apart circumferentially from the second rotating center seat 223 and located in the same diametrical direction of the second rotating center seat 223. The second rotating radial wall a 221 is correspondingly arranged with the second fixed radial wall A 211, and the second rotating radial wall b 222 is correspondingly arranged with the second fixed radial wall B 212.

[0083] When the second rotating center seat 223 rotates relative to the second fixed center seat 213, the second rotating radial wall a 221 rotates relative to the second fixed radial wall A 211, and the second rotating radial wall b 222 rotates relative to the second fixed radial wall B 212.

[0084] The filter screen includes a second filter screen, which comprises filter screen Aa2 and filter screen Bb2. Filter screen Aa2 is disposed between the second fixed radial wall A 211 and the second rotating radial wall a 221. The second rotating radial wall a 221 rotates relative to the second fixed radial wall A 211, allowing filter screen Aa2 to unfold within the air duct 41 or be collected on a corresponding scroll. Filter screen Bb2 is disposed between the second fixed radial wall B 212 and the second rotating radial wall b 222. The second rotating radial wall b 222 rotates relative to the second fixed radial wall B 222, allowing filter screen Bb2 to unfold within the air duct 41 or be collected on a corresponding scroll.

[0085] ③ The third fixed arm 31 includes a third fixed core seat 313, a third fixed radial wall A 311 and a third fixed radial wall B 312. The third fixed core seat 313 is coaxially arranged with the drive shaft. The third fixed radial wall A 311 and the third fixed radial wall B 312 are spaced apart along the circumference of the third fixed core seat 313 and are located in the same diameter direction of the third fixed core seat 313.

[0086] The third rotating arm 32 includes a third rotating center seat 323, a third rotating radial wall a 321, and a third rotating radial wall b 322. The third rotating center seat 323 is coaxially arranged with the drive axis and rotatably mounted on the third fixed center seat 313. The third rotating radial walls a 321 and b 322 are spaced apart circumferentially along the third rotating center seat 323 and located in the same diametrical direction of the third rotating center seat 323. The third rotating radial wall a 321 is correspondingly arranged with the third fixed radial wall A 311, and the third rotating radial wall b 322 is correspondingly arranged with the third fixed radial wall B 312.

[0087] When the third rotating center seat 323 rotates relative to the third fixed center seat 313, the third rotating radial wall a 321 rotates relative to the third fixed radial wall A 311, and the third rotating radial wall b 322 rotates relative to the third fixed radial wall B 312.

[0088] The filter screen includes a third filter screen, which comprises filter screen Aa3 and filter screen Bb3. Filter screen Aa3 is disposed between the third fixed radial wall A 311 and the third rotating radial wall a 321. The third rotating radial wall a 321 rotates relative to the third fixed radial wall A 311, allowing filter screen Aa3 to unfold within the air duct 41 or be collected on a corresponding roller. Filter screen Bb3 is disposed between the third fixed radial wall B 312 and the third rotating radial wall b 322. The third rotating radial wall b 322 rotates relative to the third fixed radial wall B 322, allowing filter screen Bb3 to unfold within the air duct 41 or be collected on a corresponding roller.

[0089] Furthermore, the fixing seat of the first fixed arm 11 forms a first fixed shaft hole 114, the rotating seat of the first rotating arm 12 forms a first rotating shaft hole 124, and the inner side wall of the first rotating shaft hole 124 forms a first rotating arm connecting portion; the outer side wall of the first main shaft 61 forms a first main shaft connecting portion 611; the first main shaft 61 passes through the first fixed shaft hole 114 and the first rotating shaft hole 124, and the first main shaft connecting portion 611 cooperates with the first rotating arm connecting portion to drive the first main shaft 61 and the first rotating arm 12.

[0090] The fixing seat of the second fixed arm 21 forms a second fixed shaft hole 214, and the rotating seat of the second rotating arm 22 forms a second rotating shaft hole 224. The inner side wall of the second rotating shaft hole 224 forms a second rotating arm connecting part; the outer side wall of the second main shaft 62 forms a second main shaft connecting part 621; the second main shaft 62 passes through the second fixed shaft hole 214 and the second rotating shaft hole 224, and the second main shaft connecting part 621 cooperates with the second rotating arm connecting part to drive the second main shaft 62 and the second rotating arm 22.

[0091] The fixing seat of the third fixed arm 31 forms a third fixed shaft hole 314, and the rotating seat of the third rotating arm 32 forms a third rotating shaft hole 324. The inner side wall of the third rotating shaft hole 324 forms a third rotating arm connecting part; the outer side wall of the third main shaft 63 forms a third main shaft connecting part 631; the third main shaft 63 passes through the third fixed shaft hole 314 and the third rotating shaft hole 324, and the third main shaft connecting part 631 cooperates with the third rotating arm connecting part to drive the third main shaft 63 and the third rotating arm 32.

[0092] Specifically, the first spindle connecting part 611, the second spindle connecting part 621, and the third spindle connecting part 631 all include an arc segment and a straight segment; the first spindle connecting part 611 is a structure adapted to and connected to the first rotating arm connecting part; the second spindle connecting part 621 is a structure adapted to and connected to the second rotating arm connecting part; and the third spindle connecting part 631 is a structure adapted to and connected to the third rotating arm connecting part.

[0093] The outer diameter of the first spindle 61 is larger than the outer diameter of the second spindle 62, and the outer diameter of the second spindle 62 is larger than the outer diameter of the third spindle 63; the diameter of the first fixed shaft hole 114 is larger than the diameter of the second fixed shaft hole 214, and the diameter of the second fixed shaft hole 214 is larger than the diameter of the first fixed shaft hole 114, so that the first spindle 61 can drive the first rotating arm 12 to rotate relative to the first fixed arm 11, and the first filter screen between the first rotating arm 12 and the first fixed arm 11 will unfold or be collected; the second spindle 62 can drive the second rotating arm 22 to rotate relative to the second fixed arm 21, and the second filter screen between the second rotating arm 22 and the second fixed arm 21 will unfold or be collected; the third spindle 63 can drive the third rotating arm 32 to rotate relative to the third fixed arm 31, and the third filter screen between the third rotating arm 32 and the third fixed arm 31 will unfold or be collected.

[0094] like Figure 4a As shown, the first rotating radial wall a 121 is close to the first fixed radial wall A 111, and the first rotating radial wall b 122 is close to the first fixed radial wall B 112, with the first filter screen in a collecting state; the second rotating radial wall a 221 is close to the second fixed radial wall A 211, and the second rotating radial wall b 222 is close to the second fixed radial wall B 212, with the second filter screen in a collecting state; the third rotating radial wall a 321 is close to the third fixed radial wall A 311, and the third rotating radial wall b 322 is close to the third fixed radial wall B 312, with the third filter screen in a collecting state; air can pass smoothly through the air duct 41;

[0095] like Figure 4b As shown, the first rotating radial wall a 121 is away from the first fixed radial wall A 111, and the first rotating radial wall b 122 is away from the first fixed radial wall B 112, with the first filter screen in a semi-deployed state; the second rotating radial wall a 221 is away from the second fixed radial wall A 211, and the second rotating radial wall b 222 is away from the second fixed radial wall B 212, with the second filter screen in a semi-deployed state; the third rotating radial wall a 321 is away from the third fixed radial wall A 311, and the third rotating radial wall b 322 is away from the third fixed radial wall B 312, with the third filter screen in a semi-deployed state; the first, second, and third filters can filter part of the air in the air duct 41;

[0096] like Figure 4c As shown, the first rotating radial wall a 121 is close to the first fixed radial wall B 112, and the first rotating radial wall b 122 is close to the first fixed radial wall A 111, with the first filter screen in an unfolded state; the second rotating radial wall a 221 is close to the second fixed radial wall B 212, and the second rotating radial wall b 222 is close to the second fixed radial wall A 211, with the second filter screen in an unfolded state; the third rotating radial wall a 321 is close to the third fixed radial wall B 312, and the third rotating radial wall b 322 is close to the third fixed radial wall A 311, with the third filter screen in an open state; the first, second, and third filters can filter all the air in the air duct 41;

[0097] It should be noted that any one, any two, or any three of the first, second, and third filters can be opened;

[0098] In summary, compared to a single filter, this embodiment uses multiple filters to filter the air step by step, matching the air quality with the filtration capacity of the filters, improving filtration accuracy, and extending the service life of the filters.

[0099] <Filtering device>

[0100] This embodiment also provides a filtration device, including a filter housing 4 and a plurality of filter components as described in any of the above embodiments; the filter housing 4 forms an air duct 41, the cross-section of the air duct 41 is circular; the drive axis of the drive mechanism is collinear with the axis of the air duct 41, and a plurality of filter units of the filter components are sequentially arranged in the air duct 41 along the axis of the air duct 41; preferably, the air duct 41 is a cylindrical air duct.

[0101] To address the issue of unstable rotation of the rotating arm, this embodiment proposes that an annular groove be formed on the inner wall of the air duct 41, and the position of the annular groove corresponds to the position of the rotating arm in the axial direction of the air duct 41; one end of the rotating arm near the inner wall of the air duct 41 is rotatably disposed in the annular groove.

[0102] Furthermore, the end of the rotating radial wall a away from the rotating core seat is rotatably disposed in the annular groove, and the end of the rotating radial wall b away from the rotating core seat is rotatably disposed in the annular groove; when the rotating core seat rotates with the rotating radial wall a and the rotating radial wall b, the rotating radial wall a and the rotating radial wall b rotate in the annular groove; the annular groove plays an axial and radial limiting role for the rotating radial wall a and the rotating radial wall b.

[0103] Specifically, ① the annular groove includes a first annular groove 421, the position of which corresponds to the position of the first rotating arm 12 in the axial direction of the air duct 41; the end of the first rotating radial wall a 121 away from the first rotating core seat 123 is rotatably disposed in the first annular groove 421, and the end of the first rotating radial wall b 122 away from the first rotating core seat 123 is rotatably disposed in the first annular groove 421; when the first rotating core seat 123 rotates with the first rotating radial wall a 121 and the first rotating radial wall b 122, the first rotating radial wall a 121 and the first rotating radial wall b 122 rotate within the first annular groove 421; the first annular groove 421 provides axial and radial limiting for the first rotating radial wall a 121 and the first rotating radial wall b 122;

[0104] ② The annular groove also includes a second annular groove 422, the position of which corresponds to the position of the second rotating arm 22 in the axial direction of the air duct 41; one end of the second rotating radial wall a 221 away from the second rotating core seat 223 is rotatably disposed in the second annular groove 422, and one end of the second rotating radial wall b 222 away from the second rotating core seat 223 is rotatably disposed in the second annular groove 422; when the second rotating core seat 223 rotates with the second rotating radial wall a 221 and the second rotating radial wall b 222, the second rotating radial wall a 221 and the second rotating radial wall b 222 rotate within the second annular groove 422; the second annular groove 422 provides axial and radial limiting for the second rotating radial wall a 221 and the second rotating radial wall b 222;

[0105] ③ The annular groove also includes a third annular groove 423, the position of which corresponds to the position of the third rotating arm 32 in the axial direction of the air duct 41; the end of the third rotating radial wall a 321 away from the third rotating center seat 323 is rotatably disposed in the third annular groove 423, and the end of the third rotating radial wall b 322 away from the third rotating center seat 323 is rotatably disposed in the third annular groove 423; when the third rotating center seat 323 rotates with the third rotating radial wall a 321 and the third rotating radial wall b 322, the third rotating radial wall a 321 and the third rotating radial wall b 322 rotate within the third annular groove 423; the third annular groove 423 provides axial and radial limiting for the third rotating radial wall a 321 and the third rotating radial wall b 322.

[0106] <Fresh Air Module and Fresh Air Conditioner>

[0107] like Figure 6 As shown, this embodiment also provides a fresh air module, including a fresh air housing 71 and a filter device as described in any of the above. The fresh air housing 71 has a fresh air inlet 711, the filter device is disposed at the fresh air inlet 711, and the air duct is connected to the fresh air inlet 711.

[0108] When the filtration device is applied to the fresh air module, different air handling functions can be achieved through one or more filters to meet different air handling needs, obtain different fresh air qualities, and improve the health benefits of the fresh air. Based on the quality of the fresh air, the system selects whether to use a filter and which type of filter to use, intelligently replacing filters to ensure that the air handling function and treatment level of the filters are adapted to the fresh air quality, improving air handling precision, reducing filter consumption, and increasing filter utilization. The filtration device is linked to the fresh air conditioning system for control, optimizing the control method of the fresh air conditioning system. When any filter reaches its lifespan limit, only that filter needs to be replaced without affecting the use of other filters, reducing the frequency of filter replacements, saving costs, improving user experience, and enhancing the image of the fresh air conditioning system.

[0109] This embodiment also provides a fresh air conditioner, including an indoor unit body and the aforementioned fresh air module, wherein the fresh air module is disposed on one side of the indoor unit body.

[0110] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A filter assembly for a ventilation device, the ventilation device forming an air duct, characterized in that, The filtration assembly includes a drive mechanism and multiple filtration units; each filtration unit includes: A fixed arm and a rotating arm, both extending radially along the drive axis of the drive mechanism; wherein the fixed arm is fixed in a certain radial direction of the drive axis and cannot rotate, and the rotating arm can rotate relative to the fixed arm about the drive axis; one of the fixed arm and the rotating arm is rotatably provided with a scroll. A filter screen, one end of which is connected to a roller, and the other end of which is connected to an arm without the roller; the filter screen has an arc-shaped structure, and the filter screen is unfolded and collected by the rotation of the rotating arm relative to the fixed arm; The rotating arm has an unfolded position and a collecting position in its rotation direction. When the rotating arm is in the unfolded position, the filter screen is unfolded inside the air duct; when the rotating arm is in the collecting position, the filter screen is collected on the roller. In the plurality of filter units, each filter screen has different air handling functions or has the same air handling function but different handling levels, and the rotating arm of each filter unit can be controlled to rotate independently.

2. The filter assembly according to claim 1, characterized in that, In each of the filter units, the spool and the arm without a spool have equal arm lengths.

3. The filter assembly according to claim 1, characterized in that, The air handling capacity of multiple filters in the multiple filter units gradually increases along one of the directions of the drive axis.

4. The filter assembly according to claim 1, characterized in that, The drive mechanism includes a motor and multiple spindles; the multiple spindles are nested together with the drive axis as the center line, and each spindle can be driven by the motor individually. Multiple spindles are arranged in a one-to-one correspondence with multiple filter units; the spindles are fixedly connected to the rotating arms of the corresponding filter units.

5. The filter assembly according to claim 4, characterized in that, In each of the filter units, the fixed arm includes a fixed core seat, a fixed radial wall A, and a fixed radial wall B. The fixed core seat is coaxially arranged with the drive axis, and the fixed radial walls A and B are spaced apart circumferentially along the fixed core seat and located in the same diametrical direction of the fixed core seat. The rotating arm includes a rotating core seat, a rotating radial wall a, and a rotating radial wall b. The rotating core seat is coaxially arranged with the drive axis and rotatably mounted on the fixed core seat. The rotating radial walls a and b are spaced apart along the circumference of the rotating core seat and are located in the same diametrical direction of the rotating core seat. When the rotating center seat rotates relative to the fixed center seat, the rotating radial wall a can rotate relative to the fixed radial wall A, and the rotating radial wall b can rotate relative to the fixed radial wall B.

6. The filter assembly according to claim 5, characterized in that, The filter screen includes filter screen Aa and filter screen Bb. Filter screen Aa is disposed between the fixed radial wall A and the rotating radial wall a, and filter screen Bb is disposed between the fixed radial wall B and the rotating radial wall b. When filter Aa and filter Bb are deployed, filter Aa and filter Bb can cover the cross-section of the air duct.

7. The filter assembly according to claim 5, characterized in that, The fixed core seat forms a fixed shaft hole; the rotating core seat forms a rotating shaft hole, and the inner sidewall of the rotating shaft hole forms a rotating arm connecting part; The outer side wall of the main shaft has a main shaft connecting part; the main shaft passes through the fixed shaft hole and the rotating shaft hole and the main shaft is clearance-fitted with the fixed shaft hole; the rotating arm connecting part cooperates with the main shaft connecting part to fix the main shaft to the rotating center seat.

8. The filter assembly according to claim 5, characterized in that, Each of the filter units includes a fixed arm and a rotating arm; the plurality of filter units include a first fixed arm, a first rotating arm, a second fixed arm, a second rotating arm, a third fixed arm and a third rotating arm arranged sequentially along the extension direction of the air duct; the first rotating arm can rotate relative to the first fixed arm, the second rotating arm can rotate relative to the second fixed arm, and the third rotating arm can rotate relative to the third fixed arm; The main shaft includes a first main shaft, a second main shaft, and a third main shaft; both the first and second main shafts are hollow structures; the first, second, and third main shafts are nested sequentially from the outside to the inside along the radial direction of the first main shaft; the first main shaft is fixedly connected to a first rotating arm, the second main shaft is fixedly connected to a second rotating arm, and the third main shaft is fixedly connected to a third rotating arm.

9. A filtration device, characterized in that, The filter includes a filter housing and a filter assembly as described in any one of claims 1-8; the filter housing forms the air duct, the cross-section of the air duct is circular; the drive axis is collinear with the axis of the air duct, and a plurality of the filter units are sequentially arranged in the air duct along the axis of the air duct.

10. The filtration device according to claim 9, characterized in that, The inner wall of the air duct is formed with an annular groove, and the position of the annular groove corresponds to the position of the rotating arm in the axial direction of the air duct; one end of the rotating arm near the inner wall of the air duct is rotatably disposed in the annular groove.

11. A fresh air module, characterized in that, The device includes a fresh air housing and a filter device as described in any one of claims 9-10, wherein the fresh air housing has a fresh air inlet; the filter device is disposed at the fresh air inlet, and the air duct is connected to the fresh air inlet.

12. A fresh air conditioning system, characterized in that, It includes an indoor unit body and a fresh air module as described in claim 11, wherein the fresh air module is disposed on one side of the indoor unit body.

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