CN219036878U - Filter screen mechanism and air conditioner indoor unit - Google Patents

Abstract

The application relates to the technical field of air conditioners and discloses a filter screen mechanism. The application provides a filter screen mechanism includes filter screen frame group, pivot, dust absorption pipeline and clean subassembly. The filter screen frame group is surrounded with a containing cavity, and a filter screen is arranged in the containing cavity; the rotating shaft is positioned in the accommodating cavity and is meshed with the filter screen for transmission, and the rotating shaft rotates to drive the filter screen to reciprocate on a track in the accommodating cavity; one end of the dust collection pipeline is provided with a suction port, the suction port is positioned on the windward side of the filter screen, and the other end of the suction port is connected with the fan; the cleaning assembly comprises a scraping part, wherein the scraping part is positioned at the suction port and is used for scraping dust on the filter screen. This application will remove the dust on the filter screen through scraping portion and scrape to discharge the dust through dust absorption pipeline, solved the problem that needs manual periodic cleaning filter screen mechanism, make the filter screen in time clean, keep clean. The application also discloses an air conditioner indoor unit.

Description

Filter screen mechanism and air conditioner indoor unit

Technical Field

The application relates to the technical field of air conditioners, for example, to a filter screen mechanism and an air conditioner indoor unit.

Background

With the improvement of living standard, the air conditioner becomes an indispensable household appliance for improving living quality and is widely applied. After the air conditioner is used for a period of time, dust is accumulated on the surface of the filter screen, and more flocks are accumulated on the surface of the filter screen, so that bacteria can be bred for a long time without cleaning to generate peculiar smell, the air quantity is reduced, and the refrigerating and heating effects are affected.

In the related art, an air conditioner is disclosed, and this air conditioner includes clean unit, and clean unit corresponds the filter screen setting, can in time clean the filter screen when filter screen surface accumulation a large amount of dust, avoids filter screen surface mesh to be stopped up, guarantees the clean effect of filter screen. The cleaned dust is generally accumulated in the dust box at the bottom of the air conditioner, and when a certain amount of dust is accumulated, the dust box at the bottom of the air conditioner is disassembled to clean the dust.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

with the above air conditioner, the user needs to regularly clean the dust box, and there is still a case of breeding germs.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a filter screen mechanism and an indoor unit of an air conditioner, wherein one end of a dust collection pipeline is provided with a suction port, the suction port is positioned on the windward side of a filter screen, and the other end of the suction port is connected with a fan; the cleaning assembly includes a scraper portion located at the suction opening to scrape dust off the filter screen. This application will remove the dust on the filter screen through scraping portion and scrape to discharge the dust through dust absorption pipeline, solved the problem that needs manual periodic cleaning filter screen mechanism, make the filter screen in time clean, keep clean.

In some embodiments, the filter screen mechanism includes a filter screen frame set, a rotating shaft, a dust extraction duct, and a cleaning assembly. The filter screen frame group is surrounded with a containing cavity, and a filter screen is arranged in the containing cavity; the rotating shaft is positioned in the accommodating cavity and is meshed with the filter screen for transmission, and the rotating shaft rotates to drive the filter screen to reciprocate on a track in the accommodating cavity; one end of the dust collection pipeline is provided with a suction port, the suction port is positioned on the windward side of the filter screen, and the other end of the suction port is connected with the fan; the cleaning assembly comprises a scraping part, wherein the scraping part is positioned at the suction port and is used for scraping dust on the filter screen.

In some alternative embodiments, the screen frame set includes a spacer frame, a first frame, and a second frame. The baffle frame is provided with an avoiding part, and the avoiding part is used for limiting and overlapping the rotating shaft; the first frame is fixedly connected with the partition plate frame; the second frame is fixedly connected with the first frame and/or the baffle frame, and the baffle frame is positioned in the accommodating cavity enclosed by the first frame and the second frame; wherein, baffle, first frame and second frame cooperate together to form the track to make the filter screen spacing in the track reciprocating sliding.

In some alternative embodiments, the suction duct includes an upper arc portion and a lower arc portion. The upper arc part is fixedly connected with the filter screen frame group, and a suction port is formed in the upper arc part; the lower arc part is detachably connected with the upper arc part, and the lower arc part and the upper arc part enclose a dust collection tube cavity together.

In some alternative embodiments, the suction opening of the upper arc is provided with a stiffening rib, to which the scraper is secured.

In some alternative embodiments, the filter screen mechanism further comprises a guide part, the guide part is sleeved in the dust collection pipeline, the guide part is provided with a first guide groove, and the guide part can rotate relative to the dust collection pipeline to change the notch position of the first guide groove.

In some alternative embodiments, the suction opening is a rectilinear opening and the first guide groove opens along the rotational axis of the guide portion.

In some alternative embodiments, the guide portion has a cylindrical structure, and the guide portion further includes a second guide groove located on a side remote from the first guide groove.

In some alternative embodiments, the second guide slot is a square slot, and the first guide slot falls within the second guide slot in a vertical projection.

In some alternative embodiments, the second guide slot is parallel to the suction opening, and the second guide slot has a width greater than or equal to the width of the suction opening.

In some alternative embodiments, the curvature of the outer wall surface of the pilot portion is the same as the curvature of the inner wall surface of the upper arcuate portion at the suction opening.

In some alternative embodiments, the dust collection lumen has a cross-sectional width that is greater than the guide cross-sectional width.

In some alternative embodiments, the shaft includes a shaft body and a support. One or more gears are arranged on the shaft body; the supporting part is arranged along the radial direction of the shaft body and is used for preventing the filter screen from deforming when scraping the filter screen; the filter screen comprises one or more tooth-shaped parts, and the tooth-shaped parts are meshed with the gears in a one-to-one correspondence manner.

In some alternative embodiments, the filter screen mechanism further comprises a drive device and a drive gear. The main body of the driving device is fixed on the filter screen frame group; the driving gear is connected with the driving output end of the driving device and is fixed at the end part of the shaft body.

In some embodiments, an air conditioning indoor unit includes a housing, a fan, and the aforementioned filter mechanism. The air outlet is formed in the shell, the filter screen mechanism and the fan are located in the shell, and the fan is connected with the dust collection pipeline through the connecting pipe.

The filter screen mechanism and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

the filter screen mechanism comprises a filter screen frame group, a rotating shaft, a dust collection pipeline and a cleaning assembly. The filter screen frame group is surrounded with a containing cavity, and a filter screen is arranged in the containing cavity; the rotating shaft is positioned in the accommodating cavity and is meshed with the filter screen for transmission, and the rotating shaft rotates to drive the filter screen to reciprocate on a track in the accommodating cavity; one end of the dust collection pipeline is provided with a suction port, the suction port is positioned on the windward side of the filter screen, and the other end of the suction port is connected with the fan; the cleaning assembly comprises a scraping part, wherein the scraping part is positioned at the suction port and is used for scraping dust on the filter screen. This application will remove the dust on the filter screen through scraping portion and scrape to discharge the dust through dust absorption pipeline, solved the problem that needs manual periodic cleaning filter screen mechanism, make the filter screen in time clean, keep clean.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of a partial structure of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a partial structure of a screen mechanism provided by an embodiment of the present disclosure;

FIG. 3 is a schematic view of a partial explosion of a screen mechanism provided by an embodiment of the present disclosure;

FIG. 4 is another partial schematic view of a filter screen mechanism provided by an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a partial structure of a filter screen mechanism provided by an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of another partial structure of a filter screen mechanism provided by an embodiment of the present disclosure;

fig. 7 is an exploded schematic view of another partial structure of a screen mechanism provided by an embodiment of the present disclosure.

Reference numerals:

1: a rotating shaft; 11: a shaft body; 111: a gear; 12: a support part; 21: partition board frame; 211: an avoidance unit; 22: a first frame; 23: a second frame; 3: a blower; 4: a dust collection pipeline; 41: an upper arc part; 411: a suction port; 412: reinforcing ribs; 42: a lower arc portion; 5: a scraping section; 6: a guide part; 61: a first guide groove; 62: a second guide groove; 7: a driving device; 8: a drive gear; 9: and (5) connecting pipes.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in connection with fig. 1-7, embodiments of the present disclosure provide a filter screen mechanism and an air conditioning indoor unit.

The filter screen mechanism provided by the embodiment of the disclosure comprises a filter screen frame group, a rotating shaft 1, a dust collection pipeline 4 and a cleaning assembly. The filter screen frame group is surrounded with a containing cavity, and a filter screen is arranged in the containing cavity; the rotating shaft 1 is positioned in the accommodating cavity, the rotating shaft 1 is meshed with the filter screen for transmission, and the rotating shaft 1 rotates to drive the filter screen to reciprocate on a track in the accommodating cavity; one end of the dust collection pipeline 4 is provided with a suction port 411, the suction port 411 is positioned on the windward side of the filter screen, and the other end is connected with the fan 3; the cleaning assembly comprises a scraper 5, which scraper 5 is located at the suction opening 411 for scraping off dust from the filter.

Specifically, the rotation of the rotating shaft 1 can drive the filter screen to reciprocate along the track in the accommodating cavity of the filter screen frame group. The track includes first track section and second track section, and first track section is for being close to air conditioner indoor set wind gap one side, and second track section is for keeping away from air conditioner indoor set wind gap one side, and pivot 1 is located first track section and second track section middle part side. When the filter screen moves from the second track section to the first track section, the air port is in a shielding state; when the filter screen moves from the first track section to the second track section, the air port is in an avoidance state, so that the reversing switching of the filter screen is realized, and the reversing air supply requirement of the air port is met.

During the movement of the filter screen, the filter screen and the scraping part 5 move relatively, and the scraping part 5 scrapes dust on the filter screen to the suction port 411 of the dust collection pipeline 4. Under the operation of the fan 3, negative pressure is formed in the dust collection pipeline 4, and dust is discharged through the dust collection pipeline 4, so that the full-automatic cleaning of the filter screen mechanism is realized.

Optionally, the screen frame set includes a spacer frame 21, a first frame 22, and a second frame 23. The baffle frame 21 is provided with an avoiding part 211, and the avoiding part 211 is used for limiting and overlapping the rotating shaft 1; the first frame 22 is fixedly connected with the partition board frame 21; the second frame 23 is fixedly connected with the first frame 22 and/or the partition board frame 21, and the partition board frame 21 is positioned in a containing cavity enclosed by the first frame 22 and the second frame 23; wherein, baffle, first frame 22 and second frame 23 cooperate together to form the track to make the filter screen limit in the track reciprocating sliding.

Specifically, the first frame 22 and the second frame 23 are grid frames, and the grid frame 21 includes integrally formed partitions and grid strips. The baffle supports the grid strip to make the interval of grid strip and first frame 22 equal to the interval of grid strip and second frame 23, grid strip and first frame 22, second frame 23 enclose jointly and close spacing space, so that the filter screen can slide on the track in spacing space, avoids the filter screen to appear laminating or the problem of blocking.

Optionally, the suction duct 4 comprises an upper arc 41 and a lower arc 42. The upper arc part 41 is fixedly connected with the filter screen frame group, and the upper arc part 41 is provided with a suction port 411; the lower arc part 42 is detachably connected with the upper arc part 41, and the lower arc part 42 and the upper arc part 41 jointly enclose a dust collection pipe cavity.

The upper arc part 41 and the lower arc part 42 which are detachably connected are convenient for maintenance and replacement of the dust collection pipeline 4. Preferably, the upper arc portion 41 is integrally formed with the second frame 23. In this way, the problem of turbulent flow of air flow generated in the gap between the upper arc part 41 and the second frame 23 during the operation of the indoor unit of the air conditioner can be avoided, and wind noise can be reduced. Further, the upper arc portion 41 is integrally formed with the second frame 23, and dust can be prevented from accumulating in the space between the upper arc portion 41 and the second frame 23.

Alternatively, the suction opening 411 of the upper arc portion 41 is provided with a reinforcing rib 412, and the scraping portion 5 is fixed to the reinforcing rib 412. Thus, when the fan 3 is operated, the scraping part 5 positioned on the suction port 411 is in a negative pressure state, so that dust can be prevented from being raised in the indoor unit of the air conditioner after being scraped, and a better cleaning effect is obtained. In addition, the arrangement of the reinforcing ribs 412 can improve the stability of the scraping portion 5, and noise generated by vibration of the scraping portion 5 when the fan 3 operates is avoided. Wherein the scraping portion 5 comprises a scraping plate or a scraping strip.

Optionally, the filter screen mechanism further includes a guiding portion 6, the guiding portion 6 is sleeved in the dust collection pipe 4, the guiding portion 6 is provided with a first guiding groove 61, and the guiding portion 6 can rotate relative to the dust collection pipe 4 to change the notch position of the first guiding groove 61.

Specifically, the guiding part 6 is rotatably arranged in the dust collecting duct 4, and the rotation of the guiding part 6 can move the first guiding groove 61 relative to the suction opening 411. When the first guide groove 61 rotates to the suction port 411 side, dust may sequentially pass through the suction port 411 and the first guide groove 61 and finally be discharged by the blower 3. When the first guide groove 61 rotates to a position far away from the suction port 411, the suction port 411 is in a blocking state, and dust can be prevented from being sucked back into the filter screen mechanism through the fan 3 and the dust suction pipeline 4 when the filter screen mechanism does not perform self-cleaning.

Alternatively, the suction opening 411 is a linear opening, and the first guide groove 61 is a nonlinear opening. During the rotation of the first guide groove 61, the notch position of the first guide groove 61 is also rotated. In this way, the relative position of the notch of the first guide groove 61 and the suction port 411 can be changed so as to provide a negative pressure environment in a targeted manner for a specific position at the suction port 411.

Alternatively, the suction opening 411 is a linear opening, and the first guide groove 61 is opened along the rotation axis of the guide portion 6.

The first guide groove 61 is arc-shaped in cross section, and the communication position of the suction port 411 and the first guide groove 61 in the axial direction is constantly changed during rotation of the guide portion 6. By providing the first guide groove 61 in the form of a rotation axis, the conduction region of the suction port 411 can be selectively narrowed, and a negative pressure environment can be provided specifically at a specific position at the suction port 411. On the one hand, the adsorption force at the suction port 411 is improved, and the cleaning efficiency is enhanced; on the other hand, the filter screen mechanism can clean the filter screen more pertinently, and the part with more dust accumulation can be cleaned better.

Alternatively, the guide portion 6 has a cylindrical structure, and the guide portion 6 further includes a second guide groove 62, the second guide groove 62 being located on a side away from the first guide groove 61.

During cleaning, the first guide groove 61 is located on the suction port 411 side, and the second guide groove 62 is located below the first guide groove 61. The dust at the suction port 411 passes through the first guide groove 61 and the second guide groove 62 in order, and is then discharged by the blower 3. The second guide groove 62 can play a role in drainage of the dust collection pipe cavity, so that the problem that dust is turbulent after entering the first guide groove 61 is avoided, and noise is reduced.

Alternatively, the second guide groove 62 is a square notch, and the first guide groove 61 falls vertically projected into the second guide groove 62. In this way, dust can be prevented from accumulating in the guide portion 6 during the dust falling. It can be understood that the second guide groove 62 may be a notch formed on the cylindrical guide portion 6, or may penetrate through the guide portion 6, so that the guide portion 6 is arc-shaped, and specifically, may be adaptively adjusted according to the size and layout position of the filter screen frame set and the dust collection pipe 4 in the indoor unit of the air conditioner.

Alternatively, the second guide groove 62 is parallel to the suction port 411, and the width of the second guide groove 62 is greater than or equal to the width of the suction port 411.

The rotation of the guide part 6 can move the second guide groove 62 to the suction port 411 side, so that the whole suction port 411 area can be in a negative pressure environment, and the filter screen can be completely cleaned.

Alternatively, the outer wall surface of the guide portion 6 has the same curvature as the inner wall surface of the upper arc portion 41 at the suction port 411. In the process of rotating the guide part 6, the guide part 6 is always attached to the inner wall surface at the suction port 411, so that dust is prevented from being scattered outside the dust collection pipeline 4.

Optionally, the cross-sectional width of the suction lumen is greater than the cross-sectional width of the guide 6. In this way, in the rotating process of the guide part 6, the contact area between the dust collection pipe cavity and the guide part 6 can be reduced, the abrasion degree of the guide part 6 and the dust collection pipeline 4 is reduced, and the service life of the element is prolonged.

Alternatively, the rotary shaft 1 includes a shaft body 11 and a support portion 12. The shaft body 11 is provided with one or more gears 111; the supporting part 12 is arranged along the radial direction of the shaft body 11, the supporting part 12 is arranged along the radial direction of the shaft body, and the supporting part is used for preventing the filter screen from deforming when scraping the filter screen; the filter screen comprises one or more tooth-shaped parts, and the tooth-shaped parts are meshed with the gears 111 in a one-to-one correspondence. Optionally, the support 12 comprises bristles or a silicone brush.

During the movement of the filter screen, the supporting part 12 can eject the dust in the mesh of the filter screen, and the dust is sucked into the dust suction pipe cavity under the negative pressure of the fan 3. Preferably, the number of the tooth-shaped parts of the filter screen is multiple, the tooth-shaped parts of the filter screen are parallel to each other, and the number of the gears 111 is multiple and meshed with the tooth-shaped parts in a one-to-one correspondence. Through many tooth-shaped portions, can make the filter screen more stable slide in filter screen frame group.

Optionally, the filter screen mechanism further comprises a drive means 7 and a drive gear 8. The main body of the driving device 7 is fixed on the filter screen frame group; the driving gear 8 is connected with the driving output end of the driving device 7, and the driving gear 8 is fixed at the end part of the shaft body 11. The driving device 7 drives the driving gear 8 to rotate, so that the rotating shaft 1 is driven to rotate circumferentially. The rotating shaft 1 is meshed with the filter screen, and the filter screen is driven to move forward or backward through the rotation of the rotating shaft 1 so as to shield the air gap or avoid the air gap.

Alternatively, the rotation center of the driving gear 8 is not concentric with the rotation center of the screen on the side of the rotation shaft 1. Thus, the number of teeth of the gear 111 engaged with the filter screen is small, and the risk of jamming caused by deformation of the filter screen can be reduced.

Optionally, the fan 3 includes a vortex fan 3, and an air outlet direction of the vortex fan 3 is inclined downwards. The vortex fan 3 that inclines downwards sets up has avoided the problem of fan 3 collection ash better.

The air conditioner indoor unit provided by the embodiment of the disclosure comprises a shell, a fan 3 and the filter screen mechanism. An air outlet is formed in the shell, the filter screen mechanism and the fan 3 are located in the shell, and the fan 3 is connected with the dust collection pipeline 4 through the connecting pipe 9. Optionally, the connection tube 9 comprises a hose.

In the moving process of the filter screen in the air conditioner indoor unit, the supporting part 12 ejects dust in the filter screen meshes, the dust is scraped through the scraping part 5, the dust falls into a dust collection pipe cavity from the suction port 411 under the negative pressure environment formed by the fan 3, and then is discharged outdoors from the air conditioner indoor unit through the connecting pipe 9 and the fan 3, so that the full-automatic filter screen cleaning is realized, the problem that a user regularly changes a dust collection box is solved, and meanwhile, the problem that the dust accumulates and breeds bacteria can be avoided by timely discharging the dust.

Alternatively, the number of the filter screen mechanisms is two, and the two sets of filter screen mechanisms share the same connecting pipe 9 to be connected with the fan 3. Thus, the air conditioner indoor unit can be better adapted to a large-sized air conditioner indoor unit.

The indoor unit of the air conditioner comprises an air pipe type indoor unit of the air conditioner and an indoor unit of a wall-mounted air conditioner. The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (14)

1. A filter screen mechanism, install in air conditioning indoor set, characterized in that includes:

the filter screen frame group is provided with a containing cavity in a surrounding mode, and a filter screen is arranged in the containing cavity;

the rotating shaft is positioned in the accommodating cavity and is meshed with the filter screen for transmission, and the rotating shaft rotates to drive the filter screen to reciprocate on a track in the accommodating cavity;

one end of the dust collection pipeline is provided with a suction port, the suction port is positioned on the windward side of the filter screen, and the other end of the dust collection pipeline is connected with a fan; and, a step of, in the first embodiment,

the cleaning assembly comprises a scraping part, wherein the scraping part is positioned at the suction port and is used for scraping dust on the filter screen.

2. The screen mechanism of claim 1, wherein the screen frame set comprises:

the baffle frame is provided with an avoidance part, and the avoidance part is used for limiting and overlapping the rotating shaft;

the first frame is fixedly connected with the partition board frame; and, a step of, in the first embodiment,

the second frame is fixedly connected with the first frame and/or the partition plate frame, and the partition plate frame is positioned in the accommodating cavity enclosed by the first frame and the second frame;

wherein, baffle, first frame and second frame cooperate together and form the track to make the filter screen limit be located the track is reciprocal to slide.

3. The filter screen mechanism of claim 1, wherein the dust extraction duct comprises:

the upper arc part is fixedly connected with the filter screen frame group and provided with the suction port; and, a step of, in the first embodiment,

the lower arc part is detachably connected with the upper arc part, and the lower arc part and the upper arc part enclose a dust collection tube cavity together.

4. The filter screen mechanism of claim 3, wherein,

the suction port of the upper arc part is provided with a reinforcing rib, and the scraping part is fixed on the reinforcing rib.

5. A screen mechanism as recited in claim 3, further comprising:

the guide part is sleeved in the dust collection pipeline, a first guide groove is formed in the guide part, and the guide part can rotate relative to the dust collection pipeline to change the notch position of the first guide groove.

6. The filter screen mechanism of claim 5, wherein,

the suction port is a linear opening, and the first guide groove is formed along the rotation axis of the guide part.

7. The filter screen mechanism of claim 6, wherein,

the guide part is of a cylindrical structure, and further comprises a second guide groove, and the second guide groove is located at one side far away from the first guide groove.

8. The filter screen mechanism of claim 7, wherein,

the second guide groove is a square notch, and the vertical projection of the first guide groove falls in the second guide groove.

9. The filter screen mechanism of claim 7, wherein,

the second guide groove is parallel to the suction port, and the width of the second guide groove is larger than or equal to the width of the suction port.

10. The filter screen mechanism of claim 5, wherein,

the radian of the outer wall surface of the guide part is the same as that of the inner wall surface of the upper arc part at the suction port.

11. The filter screen mechanism of claim 5, wherein,

the cross-sectional width of the dust collection pipe cavity is larger than that of the guide part.

12. The screen mechanism of claim 1, wherein the shaft comprises:

a shaft body on which one or more gears are provided; and, a step of, in the first embodiment,

the support part is radially arranged along the shaft body and is used for preventing the filter screen from deforming when the filter screen is scratched;

the filter screen comprises one or more tooth-shaped parts, and the tooth-shaped parts are meshed with the gears in a one-to-one correspondence manner.

13. The screen mechanism of claim 12, further comprising:

the main body of the driving device is fixed on the filter screen frame group; and, a step of, in the first embodiment,

and the driving gear is connected with the driving output end of the driving device and is fixed at the end part of the shaft body.

14. An air conditioning indoor unit, comprising:

a shell provided with an air outlet;

a sieve mechanism according to any one of claims 1 to 13, located within said housing; and, a step of, in the first embodiment,

the fan is positioned in the shell and connected with the dust collection pipeline through a connecting pipe.

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