Filter screen mechanism, air duct machine

Abstract

The application relates to the technical field of air conditioners, and discloses a filter screen mechanism. The filter screen mechanism comprises a mounting frame, a limiting guide rail and a chain screen. Ventilation openings are arranged between opposite first and second side portions of the mounting frame; the chain screen is internally provided with a plurality of parallel rollers, adjacent rollers are provided with air guide portions, the rollers comprise a driving shaft and a plurality of driven shafts, the end portion of the driving shaft is engaged with the limiting guide rail, and the end portion of the driven shaft is located in the limiting guide rail; the driving shaft is positively rotated, the chain screen is moved from the second side portion to the first side portion under the action of the limiting guide rail, and the filter screen avoids the ventilation openings; the driving shaft is reversely rotated, the chain screen is moved from the first side portion to the second side portion under the action of the limiting guide rail, and the filter screen shields the ventilation openings, so that the problem that the filter screen of a reversing air supply air conditioner indoor unit cannot be switched is solved. The application further discloses a ducted air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, such as a filter mechanism and a duct air conditioner. Background Technology

[0002] With the improvement of living standards, air conditioners have become an indispensable household appliance for improving the quality of life and are widely used. Air conditioner indoor units installed on the upper wall or ceiling of a room often have side-discharge airflow. When heating, the density of hot air is low, and the side-discharge airflow causes the hot air to rise, failing to reach users in the lower part of the room. This results in uneven temperature distribution within the room, causing the upper part to be hot and the lower part cold, which is particularly unpleasant for users who are prone to cold hands and feet.

[0003] In related technologies, to enable the switching of airflow direction in an air conditioning indoor unit, an air conditioning indoor unit and an air conditioner are disclosed. The air conditioning indoor unit includes a housing and a rotating air duct assembly. The housing has a first air outlet and a second air outlet; the rotating air duct assembly is rotatable relative to the housing so that the air conditioning indoor unit can switch between a first air outlet mode and a second air outlet mode. When the air conditioning indoor unit is in the first air outlet mode, air from outside the housing enters through the first air outlet and, after flowing through the rotating air duct assembly, is discharged from the second air outlet. When the air conditioning indoor unit is in the second air outlet mode, air from outside the housing enters through the second air outlet and, after flowing through the rotating air duct assembly, is discharged from the first air outlet.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] For the air conditioner indoor units that require switching of air vent status, when the air vent switches from air intake to air exhaust, the filter cannot adapt accordingly. The filter blocks part of the exhaust airflow, resulting in low air volume and seriously affecting the user experience. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a filter mechanism in which a chain mesh has multiple parallel rollers inside, and air guides are provided between adjacent rollers. Each roller includes a drive shaft and multiple driven shafts. The end of the drive shaft engages with a limiting guide rail, and the ends of the driven shafts are located within the limiting guide rail. The drive shaft rotates in the forward direction, causing the chain mesh to move from the second side to the first side under the action of the limiting guide rail, so that the filter avoids the air vent. The drive shaft rotates in the reverse direction, causing the chain mesh to move from the first side to the second side under the action of the limiting guide rail, so that the filter blocks the air vent, thereby solving the problem that the filter of the reversing air supply air conditioner indoor unit cannot be switched.

[0008] In some embodiments, the filter mechanism is used to install on the air outlet side of the indoor unit of an air conditioner. The filter mechanism includes a mounting frame, a limiting guide rail, and a chain mesh. The mounting frame includes a first side and a second side facing each other, with a vent between the first side and the second side. The limiting guide rail is located between the first side and the second side. The chain mesh has multiple parallel rollers inside, with air guide sections between adjacent rollers. Each roller includes a drive shaft and multiple driven shafts. The end of the drive shaft engages with the limiting guide rail, and the end of the driven shaft is located inside the limiting guide rail. The drive shaft rotates in the forward direction, causing the chain mesh to move from the second side to the first side under the action of the limiting guide rail, thus avoiding the air outlet. The drive shaft rotates in the reverse direction, causing the chain mesh to move from the first side to the second side under the action of the limiting guide rail, thus blocking the air outlet.

[0009] In some optional embodiments, the limiting guide rail includes a first guide rail and a second guide rail. The first guide rail is spirally wound, forming a concentric ring-shaped first track by successively forming multiple circles from the inside out; the second guide rail is integrally formed with the first guide rail, and the second guide rail is in the shape of an inverted U, with its U-shaped opening facing the first guide rail, forming a straight second track, and the second guide rail is located on the first side.

[0010] In some alternative embodiments, a gear is fitted at the end of the drive shaft, and a toothed portion of the limiting guide rail is provided to mesh with the gear; a roller is fitted at the end of the driven shaft, and the roller is slidably connected to the limiting guide rail.

[0011] In some alternative embodiments, the filter mechanism further includes a drive base and a drive device. The drive base is fixed to the chain mesh; the main body of the drive device is fixed to the drive base, and the drive output end of the drive device is connected to a gear.

[0012] In some alternative embodiments, the filter mechanism further includes a limiting mechanism located on the first side. When the drive shaft moves to the first side, the limiting mechanism limits and stops the drive shaft.

[0013] In some embodiments, the duct air conditioner includes a housing and the aforementioned filter mechanism. The housing has a side air outlet and a down air outlet; the filter mechanism includes a first filter mechanism and a second filter mechanism, with the first filter mechanism located at the side air outlet and the second filter mechanism located at the down air outlet.

[0014] In some optional embodiments, the duct unit further includes a rotating air duct assembly located within the housing. The rotating air duct assembly includes a volute, which is rotatably disposed within the housing to switch the air outlet direction between a side air outlet and a down air outlet. When the volute corresponds to the side air outlet, the filter of the first filter mechanism is in an avoidance state, and the filter of the second filter mechanism is in a filtering state. When the volute corresponds to the down air outlet, the filter of the first filter mechanism is in a filtering state, and the filter of the second filter mechanism is in an avoidance state.

[0015] In some alternative embodiments, the rotating duct assembly further includes a connecting plate, a sealing partition, and a power assembly. The connecting plate is fixed inside the housing; the sealing partition is rotatably connected to the connecting plate, and the volute is fixed to the sealing partition; the power assembly is located on the connecting plate and is used to drive the sealing partition to rotate, thereby causing the volute to rotate.

[0016] In some alternative embodiments, the sealing partition includes a first partition and a second partition. The first partition has multiple clearance notches, and multiple volutes are fixed to the multiple clearance notches one by one; the second partition is perpendicularly fixed to the first partition, and the second partition includes a protrusion that passes through a connecting plate and is connected to the drive output end of the power assembly.

[0017] In some alternative embodiments, the duct unit further includes a baffle pivotally connected to the first partition, the baffle being used to isolate the inlet and outlet airflows of the volute.

[0018] The filter mechanism and duct air conditioner provided in this disclosure can achieve the following technical effects:

[0019] The filter mechanism is installed on the air outlet side of the indoor unit of an air conditioner. The filter mechanism includes a mounting frame, a limiting guide rail, and a filter chain. The mounting frame includes opposing first and second sides, with a ventilation opening between them. The limiting guide rail is located between the first and second sides. The filter chain has multiple parallel rollers inside, with air guide sections between adjacent rollers. Each roller includes a drive shaft and multiple driven shafts. The end of the drive shaft engages with the limiting guide rail, and the ends of the driven shafts are located within the limiting guide rail. The drive shaft rotates forward, causing the filter chain to move from the second side to the first side under the action of the limiting guide rail, thus avoiding the air outlet. The drive shaft rotates in the reverse direction, causing the filter chain to move from the first side to the second side under the action of the limiting guide rail, thus blocking the air outlet. This solves the problem of the filter not being able to switch in reversible air conditioning indoor units.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a partial structural schematic diagram of the filter mechanism provided in an embodiment of this disclosure;

[0023] Figure 2 This is a partial exploded view of the filter mechanism provided in the embodiments of this disclosure;

[0024] Figure 3 This is another partially exploded structural diagram of the filter mechanism provided in the embodiments of this disclosure;

[0025] Figure 4 This is a partial structural schematic diagram of the limiting guide rail and roller provided in the embodiments of this disclosure;

[0026] Figure 5 This is another partial structural schematic diagram of the limiting guide rail and roller provided in the embodiments of this disclosure;

[0027] Figure 6 This is a partial structural schematic diagram of the duct machine provided in the embodiments of this disclosure.

[0028] Figure label:

[0029] 1: Limiting guide rail; 11: First guide rail; 12: Second guide rail; 2: Chain mesh; 3: Roller; 31: Drive shaft; 32: Driven shaft; 4: Drive device; 5: Volute housing; 6: Connecting plate; 7: Sealing partition; 71: First partition; 72: Second partition; 8: Baffle; 9: Power assembly; 10: Filter screen. Detailed Implementation

[0030] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0031] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0032] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0034] Unless otherwise stated, the term "multiple" means two or more.

[0035] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0038] Combination Figure 1-6 As shown in the embodiments of this disclosure, a filter mechanism and an air duct machine are provided.

[0039] Traditional ducted air conditioners can have two air outlet modes by adding a rotating duct assembly: one with air intake at the bottom and air outlet at the side, and the other with air intake at the side and air outlet at the bottom. To meet the air intake and exhaust requirements of an indoor air conditioning unit with reversible air supply, the original fixed and immovable filter needs to be modified so that the filter at the air intake blocks the air outlet, and the filter at the air outlet avoids the air outlet.

[0040] The filter mechanism provided in this embodiment is used for installation on the air outlet side of an indoor air conditioning unit. The filter mechanism includes a mounting frame, a limiting guide rail 1, and a chain mesh 2. The mounting frame includes a first side and a second side facing each other, with a ventilation opening between the first side and the second side. The limiting guide rail 1 is located between the first side and the second side. The chain mesh 2 has multiple parallel rollers 3 inside, with air guides between adjacent rollers 3. Each roller 3 includes a drive shaft 31 and multiple driven shafts 32. The end of the drive shaft 31 engages with the limiting guide rail 1, and the end of the driven shaft 32 is located inside the limiting guide rail 1. The drive shaft 31 rotates in the forward direction, causing the chain mesh 2 to move from the second side to the first side under the action of the limiting guide rail 1, and the filter 10 avoids the air outlet. The drive shaft 31 rotates in the reverse direction, causing the chain mesh 2 to move from the first side to the second side under the action of the limiting guide rail 1, and the filter 10 blocks the air outlet.

[0041] Specifically, the mounting frame includes opposing first and second sides, as well as opposing third and fourth sides. The third side is perpendicular to the first side, and the first, second, third, and fourth sides enclose a ventilation opening. Understandably, the first and second sides can be arranged horizontally or vertically, depending on the size of the air vents and the airflow method of the indoor air conditioning unit.

[0042] There are two sets of limiting guide rails 1, which are arranged in parallel on the third and fourth sides respectively. The two ends of multiple rollers 3 passing through the chain mesh 2 are limited within the limiting guide rails 1 on both sides. Among them, the roller 3 located on one side of the chain mesh 2 and close to the second side is the drive shaft 31, which meshes with the limiting guide rail 1 for transmission. When the drive shaft 31 rotates in the forward direction, it moves from the second side to the first side within the limiting guide rail 1. Under the action of multiple driven shafts 32 and the limiting guide rail 1, it pushes and drives the chain mesh 2 and filter screen 10 to move from the second side to the first side, so that the filter screen 10 avoids the air outlet. When the drive shaft 31 rotates in the reverse direction, it moves from the first side to the second side within the limiting guide rail 1. Under the action of multiple driven shafts 32 and the limiting guide rail 1, it pushes and drives the chain mesh 2 and filter screen 10 to move from the first side to the second side, so that the filter screen 10 blocks the air outlet, thereby meeting the requirements of the reversible air supply air conditioning indoor unit.

[0043] In addition, by using the chain mesh 2, roller 3 and limiting guide rail 1, the problem of stacking or jamming during the movement of filter screen 10 can be avoided, thus improving the movement stability of filter screen 10.

[0044] Optionally, the limiting guide rail 1 includes a first guide rail 11 and a second guide rail 12. The first guide rail 11 is spirally wound, forming a concentric ring-shaped first track by successively forming multiple circles from the inside out; the second guide rail 12 is integrally formed with the first guide rail 11, and the second guide rail 12 is inverted U-shaped, with its U-shaped opening facing the first guide rail 11, forming a straight second track, and the second guide rail 12 is located on the first side.

[0045] Specifically, the first guide rail 11 and the second guide rail 12 together enclose the track with openings at both ends. The second guide rail 12 forms a straight track, and the first guide rail 11 forms a vortex track. When the air vent switches to the air outlet state, the movement path of the multiple driven shafts 32 includes two parts: first, they move horizontally in a straight line along the first guide rail 11, and then they gradually roll up into the second track along the second guide rail 12, so that the filter 10 is completely rolled up in the second guide rail 12. When the air vent switches to the air return state, the multiple driven shafts 32, driven by the drive shaft 31, gradually move from the second track to the first track through the action of the chain mesh 2, and finally all move into the first track, so that the filter 10 is spread out on the air vent. The first guide rail 11 of this application can avoid the problem of filter 10 stacking, and the second guide rail 12 can better store the chain mesh 2, saving space.

[0046] Optionally, a gear is sleeved at the end of the drive shaft 31, and a toothed portion of the limiting guide rail 1 is provided to mesh with the gear; a roller is sleeved at the end of the driven shaft 32, and the roller is slidably connected to the limiting guide rail 1.

[0047] Specifically, the chain mesh 2 has multiple through holes, and multiple rollers 3 are correspondingly inserted through these through holes, allowing the rollers 3 to rotate circumferentially within the through holes. Gears are fixed at both ends of the drive shaft 31, meshing with the limiting guide rail 1. The rotation of the drive gears causes the drive shaft 31 to move relative to the limiting guide rail 1. Rollers are provided on both sides of the multiple driven shafts 32, and the limiting guide rail 1 has slides adapted to the rollers. The movement of the drive shaft 31 relative to the limiting guide rail 1 drives the chain mesh 2 and the multiple driven shafts 32 to move as a whole, thereby enabling the unfolding and rewinding of the filter screen 10.

[0048] Optionally, the filter mechanism also includes a drive base and a drive device 4. The drive base is fixed on the chain mesh 2; the main body of the drive device 4 is fixed on the drive base, and the drive output end of the drive device 4 is connected to a gear.

[0049] Specifically, the drive base is an L-shaped fixed base, with one end fixed to the chain mesh 2 and the other end fixed to the drive device 4. The drive shaft drives the gear to rotate, thereby driving the drive shaft 31 to rotate in the forward or reverse direction, realizing the unfolding and winding of the filter screen 10. This application can realize the switching of the filter screen 10 with a single drive device 4, saving costs and energy consumption.

[0050] Optionally, the filter mechanism also includes a limiting mechanism located on the first side. When the drive shaft 31 moves to the first side, the limiting mechanism limits and stops the drive shaft 31.

[0051] Specifically, the limiting mechanism includes a magnetic block, and a metal part is sleeved on the drive shaft 31. When the drive shaft 31 moves to the first side, the magnetic block attracts the metal part to limit and stop the drive shaft 31. Under the drive of the drive device 4, the drive shaft 31 moves from the first side to the second side, and the metal part disengages from the magnetic block. The limiting mechanism enables the filter 10 to switch more accurately between the filtering state and the avoidance state. Optionally, the magnetic block includes a magnet, and the metal part is made of iron, nickel, or cobalt metal.

[0052] Optionally, the ducted air conditioner includes a housing and the aforementioned filter mechanism. The housing has a side air outlet and a down air outlet; the filter mechanism includes a first filter mechanism and a second filter mechanism, with the first filter mechanism located at the side air outlet and the second filter mechanism located at the down air outlet.

[0053] The ducted air conditioner includes two air outlet modes: a first air outlet mode and a second air outlet mode. The first air outlet mode is suitable for cooling operation, with air entering through the lower vent and exiting through the side vent. The second air outlet mode is suitable for heating operation, with air entering through the side vent and exiting through the lower vent. This avoids cold air blowing directly on people in cooling mode, and allows hot air to sink more easily to the user area in heating mode, improving heating comfort. In the first air outlet mode, the filter 10 of the first filter mechanism is in a non-directional state, while the filter 10 of the second filter mechanism is in a filtering state; in the second air outlet mode, the filter 10 of the first filter mechanism is in a filtering state, while the filter 10 of the second filter mechanism is in a non-directional state.

[0054] Optionally, the duct unit also includes a rotating air duct assembly located inside the housing. The rotating air duct assembly includes a volute 5, which is rotatably disposed inside the housing to switch the air outlet direction between the side air outlet and the down air outlet. When the volute 5 corresponds to the side air outlet, the filter 10 of the first filter mechanism is in an avoidance state, and the filter 10 of the second filter mechanism is in a filtering state. When the volute 5 corresponds to the down air outlet, the filter 10 of the first filter mechanism is in a filtering state, and the filter 10 of the second filter mechanism is in an avoidance state.

[0055] Optionally, the rotating duct assembly also includes a connecting plate 6, a sealing partition 7, and a power assembly 9. The connecting plate 6 is fixed inside the housing; the sealing partition 7 is rotatably connected to the connecting plate 6, and the volute 5 is fixed to the sealing partition 7; the power assembly 9 is located on the connecting plate 6 and is used to drive the sealing partition 7 to rotate, thereby driving the volute 5 to rotate.

[0056] Specifically, the ducted air conditioner includes multiple centrifugal fans, each comprising a volute 5 and an impeller. The multiple impellers are fixedly connected by a rotating shaft, which is rotatably mounted within the housing. Rotation of the shaft drives the impellers to rotate around a first rotation center. The volute 5 covers the impellers, and multiple volutes 5 are fixed to a sealing partition 7. The power assembly 9 includes a meshing drive gear and a driven gear. The drive gear is rotatably connected to a connecting plate 6, and the driven gear passes through the connecting plate 6 and is fixedly connected to the sealing partition 7. Rotation of the drive gear drives the driven gear to rotate, which in turn drives the sealing partition 7 and the volute 5 to rotate around a second rotation center. In this way, the volute 5 and the impellers can move relatively independently, thus satisfying more air delivery modes.

[0057] Optionally, the sealing partition 7 includes a first partition 71 and a second partition 72. The first partition 71 has multiple clearance notches, and multiple volutes 5 are fixed to the multiple clearance notches one by one; the second partition 72 is vertically fixed to the first partition 71, and the second partition 72 includes a protrusion, which passes through the connecting plate 6 and is connected to the drive output end of the power assembly 9. By setting the first partition 71 and the second partition 72, the problem of airflow turbulence from both sides of the volute 5 can be avoided, the air volume can be increased, and the noise can be reduced.

[0058] Optionally, the duct unit also includes a baffle 8, which is pivotally connected to the first partition 71. The baffle 8 is used to isolate the inlet and outlet airflow of the volute 5.

[0059] Traditional ducted air conditioners can achieve two air outlet modes by adding a rotating duct assembly: one with air intake at the bottom and air outlet at the side, and the other with air intake at the side and air outlet at the bottom. The housing includes a fixed housing and a movable housing. The movable housing can move away from the fixed housing, and its movement allows the rotating duct assembly to rotate freely within the housing. The rotating duct assembly includes a centrifugal impeller assembly. While ducted air conditioners in related technologies can achieve air outlet switching, the rotation of the rotating duct assembly requires clearance, leading to turbulent airflow within the ducted air conditioner and severely affecting the airflow volume. Therefore, although there are conceptual designs for ducted air conditioners that can achieve reversible airflow, none have been applied to actual products.

[0060] The sealing partition 7 of this application separates the air outlet of the volute 5 from the air inlets on both sides of the volute 5. The lower part of the sealing partition 7 can be pivotally connected to the baffle 8 via a pivot shaft. The sealing partition 7 can drive the volute 5 to rotate, so that the air outlet direction of the volute 5 is switched from the downflow outlet to the side outlet. Then, by adjusting the rotation angle of the baffle 8, the air duct forms a complete air duct curve, thereby separating the air inlet air duct and the air outlet air duct. This avoids the problem of turbulence and flow caused by mutual interference due to gaps between the air inlet air duct and the air outlet air duct, which helps to reduce noise in the duct air conditioner and improve the air supply performance of the duct air conditioner.

[0061] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A filter mechanism for installation on the air outlet side of an indoor air conditioning unit, characterized in that, include: The mounting frame includes a first side and a second side facing each other, with a ventilation opening between the first side and the second side; A limiting guide rail is located between the first side and the second side; The chain mesh has multiple parallel rollers inside, and air guides are provided between adjacent rollers. Each roller includes a drive shaft and multiple driven shafts. The end of the drive shaft meshes with the limiting guide rail, and the end of the driven shaft is located inside the limiting guide rail. In this configuration, the drive shaft rotates in the forward direction, causing the chain mesh to move from the second side to the first side under the action of the limiting guide rail, with the filter screen avoiding the air vent; conversely, the drive shaft rotates in the reverse direction, causing the chain mesh to move from the first side to the second side under the action of the limiting guide rail, with the filter screen blocking the air vent. The limiting guide rail includes: The first guide rail is spirally arranged, forming multiple concentric rings from the inside out; and, The second guide rail is integrally formed with the first guide rail. The second guide rail is in the shape of an inverted U, with its U-shaped opening facing the first guide rail. The second guide rail forms a straight second track and is located on the first side. The first and second guide rails together enclose a track with openings at both ends. The end of the drive shaft is fitted with a gear, and the limiting guide rail is provided with a toothed portion that meshes with the gear; the end of the driven shaft is fitted with a roller, and the roller is slidably connected to the limiting guide rail.

2. The filter mechanism according to claim 1, characterized in that, Also includes: The drive seat is fixed to the chain mesh; and, The driving device has its main body fixed on the driving base, and the driving output end of the driving device is connected to the gear.

3. The filter mechanism according to claim 1, characterized in that, Also includes: A limiting mechanism is located on the first side. When the drive shaft moves to the first side, the limiting mechanism limits and stops the drive shaft.

4. A ducted air conditioner, characterized in that, include: The casing has side air vents and a downwind air vent. and, The filter mechanism as described in any one of claims 1 to 3, the filter mechanism includes a first filter mechanism and a second filter mechanism, the first filter mechanism being located at the side air vent and the second filter mechanism being located at the downwind vent.

5. The duct air conditioner according to claim 4, characterized in that, Also includes: A rotating air duct assembly is located inside the housing. The rotating air duct assembly includes a volute, which is rotatably disposed inside the housing to switch the air outlet direction between the side air outlet and the down air outlet. When the volute corresponds to the side air vent, the filter of the first filter mechanism is in an avoidance state, and the filter of the second filter mechanism is in a filtering state; when the volute corresponds to the downwind vent, the filter of the first filter mechanism is in a filtering state, and the filter of the second filter mechanism is in an avoidance state.

6. The duct air conditioner according to claim 5, characterized in that, The rotary air duct assembly also includes: The connecting plate is fixed inside the housing; A sealing partition is rotatably connected to the connecting plate, and the volute is fixed to the sealing partition. A power unit, located on the connecting plate, is used to drive the sealing partition to rotate, thereby causing the volute to rotate.

7. The duct air conditioner according to claim 6, characterized in that, The sealing partition includes: The first partition has multiple clearance notches, and the multiple volutes are fixed to the multiple clearance notches; and, The second partition is vertically fixedly connected to the first partition. The second partition includes a protruding post that passes through the connecting plate and is connected to the drive output end of the power component.

8. The duct air conditioner according to claim 7, characterized in that, Also includes: A baffle, pivotally connected to the first partition, is used to isolate the inlet and outlet airflow of the volute.

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