Filter screen self-cleaning mechanism and air conditioner

Abstract

A filter screen self-cleaning mechanism and an air conditioner, relating to the technical field of air conditioners. The filter screen self-cleaning mechanism comprises: a roller brush which is used for cleaning a filter screen (100) and comprises a roller brush shaft (500); and a dust collection box which is formed by connecting an upper box body (600) and a lower box body (610), joints on two sides of the upper box body (600) and the lower box body (610) defining roller brush shaft holes, and two ends of the roller brush shaft (500) respectively being disposed in the two roller brush shaft holes.

Description

Filter self-cleaning mechanism and air conditioner

[0001] This application is based on Chinese patent application number 202420253346.1, filed on February 1, 2024, Chinese patent application number 202420249697.5, filed on February 1, 2024, and Chinese patent application number 202420253402.1, filed on February 1, 2024, and claims the priority of the above Chinese patent applications. The entire contents of the above Chinese patent applications are hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to the technical field of air conditioners, for example, to a filter self-cleaning mechanism and an air conditioner. Background Art

[0003] Air conditioners typically have a filter at the air inlet to filter the air entering. However, after a period of use, the filter accumulates dust and other debris. If not cleaned promptly, the filter can become clogged, affecting airflow and breeding bacteria that can affect air quality.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a filter self-cleaning mechanism and an air conditioner.

[0007] In some embodiments, the filter self-cleaning mechanism includes: a roller brush for cleaning the filter, including a roller brush shaft; a dust box, which is composed of an upper box body and a lower box body connected together, and the connection between the upper box body and the lower box body on both sides is bounded by a roller brush shaft hole; and the two ends of the roller brush shaft are respectively mounted in the two roller brush shaft holes.

[0008] In some embodiments, the air conditioner includes the filter self-cleaning mechanism described in any of the above embodiments.

[0009] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0011] FIG1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure;

[0012] FIG2 is a schematic structural diagram of a reel assembly provided by an embodiment of the present disclosure;

[0013] FIG3 is a schematic structural diagram of a bracket assembly provided in an embodiment of the present disclosure;

[0014] FIG4 is a schematic structural diagram of the upper surface and the lower surface provided by an embodiment of the present disclosure;

[0015] FIG5 is a schematic diagram of the mesh thickness of the filter provided in an embodiment of the present disclosure;

[0016] FIG6 is a schematic structural diagram of a mounting through hole provided in an embodiment of the present disclosure;

[0017] FIG7 is a schematic structural diagram of a receiving groove and an avoidance recess provided in an embodiment of the present disclosure;

[0018] FIG8 is a schematic structural diagram of a driving mechanism provided in an embodiment of the present disclosure;

[0019] FIG9 is an exploded schematic diagram of a dust collection box provided in an embodiment of the present disclosure;

[0020] FIG10 is a schematic diagram of the rotation of the upper box body provided in an embodiment of the present disclosure;

[0021] FIG11 is a schematic structural diagram of comb teeth provided in an embodiment of the present disclosure;

[0022] FIG12 is a schematic structural diagram of a roller brush shaft and a roller brush gear provided in an embodiment of the present disclosure;

[0023] FIG13 is a schematic diagram of the assembly of the extruded ribs and the extruded plane provided in an embodiment of the present disclosure.

[0024] Reference numerals: 100: filter screen; 101: first side edge; 102: second side edge; 103: third side edge; 104: fourth side edge; 105: upper mesh surface; 106: lower mesh surface; 110: mounting hole; 120: mesh frame; 200: reel assembly; 210: first reel; 211: receiving groove; 212: avoidance recess; 220: second reel; 230: intermediate roller; 300: upper bracket; 301: bracket buckle; 302: supporting rib; 303: stop protrusion; 304: roller plate; 305: partition plate; 310: lower bracket; 311: bracket hook; 400: driving motor; 401: driving gear; 410: first driven gear; 420: second driven gear; 430: intermediate gear; 500: Roller brush shaft; 501: Bristles; 510: Roller brush sleeve; 511: Flange; 520: Roller brush gear; 521: Extrusion rib; 522: Extrusion plane; 600: Upper box body; 601: First semicircular opening; 602: Roller brush opening; 603: Comb teeth; 604: Box body shaft; 605: Box body buckle; 610: Lower box body; 611: Second semicircular opening; 612: Box body rotating plate; 613: Box body shaft hole; 614: Box body hook; 700: Casing; 710: Air inlet. DETAILED DESCRIPTION

[0025] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0026] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that such terms are interchangeable where appropriate to describe the embodiments of the present disclosure. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0028] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0029] Unless otherwise stated, the term "plurality" means two or more.

[0030] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0031] 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.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0033] As shown in Figure 1, an embodiment of the present disclosure provides an air conditioner comprising a housing 700 and a self-cleaning filter mechanism. The housing 700 is provided with an air inlet 710, and the self-cleaning filter mechanism is disposed within the housing 700 and located at the air inlet 710. The self-cleaning filter mechanism utilizes a filter 100 to filter air entering the housing 700 through the air inlet 710 and automatically cleans the filter 100.

[0034] As shown in Figures 2 to 13, an embodiment of the present disclosure provides a self-cleaning filter mechanism, comprising a filter 100, a reel assembly 200, and a support assembly. The reel assembly 200 comprises a first reel 210, a second reel 220, and an intermediate roller 230. The first end of the filter 100 is wound around the first reel 210, the second end of the filter 100 is wound around the second reel 220, and the intermediate roller 230 is supported in the middle of the filter 100, folding the filter 100 in half to form an upper surface 105 and a lower surface 106. The support assembly comprises an upper support 300 and a lower support 310, wherein the upper support 300 supports the upper surface 105, and the lower support 310 supports the lower surface 106.

[0035] In this embodiment, when the first reel 210 is reeling and the second reel 220 is unreeling, the filter 100 moves toward the first reel 210; when the second reel 220 is reeling and the first reel 210 is unreeling, the filter 100 moves toward the second reel 220. Due to the layout of the first reel 210, the second reel 220, and the intermediate roller 230, the movement trajectory of the filter 100 forms a U-shaped rotation. Furthermore, the upper bracket 300 and the lower bracket 310 serve as the movement track supporting the filter 100. This ensures smooth movement of the filter 100, improving the cleaning effect of the filter 100.

[0036] Optionally, the upper bracket 300 is snap-connected to the lower bracket 310. In this way, the snap-connection design makes the assembly of the bracket assembly simpler and faster, and easy to disassemble and repair.

[0037] Optionally, as shown in Figure 3, bracket buckles 301 are provided on both sides of the upper bracket 300, and bracket hooks 311 are provided on both sides of the lower bracket 310, and the bracket hooks 311 correspond to the bracket buckles 301, so that the upper bracket 300 is connected to the bracket hooks 311 of the lower bracket 310 through the bracket buckles 301.

[0038] For example, a bracket clip 301 is provided on the front, middle, and rear portions of the first side of the upper bracket 300, respectively. Three corresponding bracket hooks 311 are provided on the first side of the lower bracket 310. The second side of the upper bracket 300 and the second side of the lower bracket 310 are arranged in the same manner. Thus, the first and second sides of the upper bracket 300 are respectively connected to the lower bracket 310 via the three bracket clips 301, thereby enhancing the connection strength between the upper and lower brackets 300 and 310.

[0039] Optionally, there is a bracket gap between the upper bracket 300 and the lower bracket 310. In this way, the lower mesh surface 106 is prevented from being clamped by the upper bracket 300 and the lower bracket 310, ensuring smooth movement of the filter screen 100.

[0040] Optionally, as shown in Figures 2 and 3, the upper bracket 300 includes a support rib 302, the top of the support rib 302 is supported on the lower part of the upper surface 105, and the bottom of the support rib 302 is provided with a stop protrusion 303; wherein the end of the stop protrusion 303 is located in the bracket gap.

[0041] In this embodiment, the top of the support rib 302 plays a role in supporting the upper mesh surface 105, and the stop protrusion 303 plays a stopping role for the lower mesh surface 106. When the lower mesh surface 106 moves upward and conflicts with the stop protrusion 303, it cannot continue to move upward.

[0042] Optionally, the support ribs 302 include multiple horizontal ribs and multiple vertical ribs. The horizontal ribs are arranged parallel to the movement path of the filter screen 100, while the vertical ribs are arranged perpendicular to the horizontal ribs. Stop protrusions 303 are provided at the bottom of the vertical ribs. This allows for a more reasonable placement of the stop protrusions 303.

[0043] Optionally, as shown in FIG3 , corresponding roller plates 304 are provided on both sides of the first end of the upper bracket 300; the ends of the intermediate roller 230 are rotatably mounted on the two roller plates 304. The roller plates 304 are provided with roller holes, and the ends of the intermediate roller 230 are assembled into the corresponding roller holes.

[0044] Optionally, as shown in Figures 2 and 3, a partition plate 305 is further provided at the first end of the upper bracket 300; the upper mesh surface 105 extends from above the partition plate 305, and the lower mesh surface 106 extends from below the partition plate 305. Thus, the partition plate 305 separates the extension directions of the upper mesh surface 105 and the lower mesh surface 106, facilitating the upper mesh surface 105 to extend upward to the upper bracket 300 and the lower mesh surface 106 to extend downward to the lower bracket 310.

[0045] Optionally, both ends of the partition plate 305 are respectively connected to the two roller plates 304. In this way, the layout of the roller plates 304 and the partition plate 305 is made more compact.

[0046] In some embodiments, as shown in FIG8 , the filter self-cleaning mechanism includes a drive mechanism, which includes a drive motor 400 and a gear set. The gear set includes a driving gear 401, a first driven gear 410, a second driven gear 420, and an intermediate gear 430. The driving gear 401 is disposed on the drive shaft of the drive motor 400, the first driven gear 410 is disposed at the end of the first reel 210, the second driven gear 420 is disposed at the end of the second reel 220, and the intermediate gear 430 is disposed between the first driven gear 410 and the second driven gear 420. The drive motor 400 drives the first driven gear 410 to rotate via the driving gear 401, and the transmission is transmitted to the second driven gear 420 via the intermediate gear 430, thereby tensioning the filter 100 between the first reel 210 and the second reel 220. In this way, by controlling the rotation direction of the driving motor 400 , the second reel 220 can be unwound when the first reel 210 is reeled, or the second reel 220 can be reeled when the first reel 210 is unwound.

[0047] Alternatively, as shown in Figure 2, in the initial state, the filter 100 may be wound around the first reel 210 and the second reel 220 in the following manner: no filter 100 is wound around the first reel 210, while the filter 100 is wound around the second reel 220 to provide a winding margin. In this case, the winding point between the filter 100 and the second reel 220 is located on the right side. Under the action of the drive mechanism, as the first reel 210 reels and the second reel 220 unwinds, the filter 100 is gradually pulled away from the first reel 210.

[0048] In some embodiments, the filter self-cleaning mechanism includes a filter 100 and a reel assembly 200. The filter 100 has a mesh frame 120 at its first end. The reel assembly 200 includes a first reel 210, which defines a receiving slot 211, within which the mesh frame 120 is disposed. Furthermore, the width of the slot 211 is smaller than the width of the mesh frame 120.

[0049] In this embodiment, the first end of the filter 100 is connected to the first reel 210 via the mesh frame 120. When the mesh frame 120 is assembled into the receiving slot 211, the mesh frame 120 is prevented from falling out of the slot 211 because the width of the slot 211 is smaller than the width of the mesh frame 120. This ensures the stability of the connection between the filter 100 and the first reel 210.

[0050] Here, the second reel 220 has the same structure as the first reel 210 . The second end of the filter 100 is also provided with a mesh frame 120 , and the mesh frame 120 is disposed in the receiving groove 211 of the second reel 220 .

[0051] Optionally, the receiving groove 211 extends along the axial direction of the first reel 210. In this way, when the first reel 210 winds the filter screen 100, the winding line is parallel to the axial direction of the first reel 210, which is conducive to uniformly winding the filter screen 100.

[0052] Optionally, the mesh frame 120 is constructed as a cylinder, and the width of the mesh frame 120 is the diameter of the cylinder. Here, the width of the notch of the accommodating groove 211 is consistent, and the width of the notch is smaller than the diameter of the cylinder.

[0053] Optionally, two opposite groove walls at the notch of the receiving groove 211 are provided with rounded corners, so as to avoid the groove walls at the notch being sharp and scratching the filter screen 100.

[0054] Optionally, as shown in Figure 7, a roller brush is provided below the first reel 210, the axial direction of the roller brush being arranged parallel to the axial direction of the first reel 210, and the bristles 501 of the roller brush are used to clean the filter screen 100 wound on the first reel 210. In this way, the arrangement of the roller brush is conducive to comprehensive cleaning of the filter screen 100.

[0055] Optionally, the interference distance between the bristles 501 of the roller brush and the first reel 210 is 0.5 to 2 mm. In this way, by setting the interference distance, the bristles 501 can also contact the filter 100 and clean it even when the filter 100 rolled up by the first reel 210 is thin.

[0056] Exemplarily, the interference distance may be selected as 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.7 mm, 1.9 mm or 2 mm.

[0057] Optionally, the first scroll 210 is further provided with an avoidance recess 212 ; when the bristles 501 of the roller brush at the contact point with the first scroll 210 are located in the avoidance recess 212 , the bristles 501 at the contact point do not interfere with the first scroll 210 .

[0058] In this embodiment, when the first reel 210 does not reel in the filter screen 100 and the bristles 501 of the roller brush at the point of contact with the first reel 210 are located in the avoidance recess 212, the bristles 501 at the point of contact do not interfere with the first reel 210, that is, the bristles 501 at the point of contact are fully extended. This prevents the bristles 501 from interfering with the reel for a long time and bending, thereby extending the service life of the roller brush.

[0059] Optionally, the avoidance recess 212 extends along the axial direction of the first reel 210 .

[0060] Optionally, the escape recess 212 and the receiving groove 211 are formed on opposite sides of the first reel 210. As shown in FIG7 , when the filter 100 is tensioned and the first reel 210 is not reeling in the filter 100, the receiving groove 211 rotates directly above the first reel 210, and the escape recess 212 rotates directly below the first reel 210. At this time, the bristles 501 below, which are in contact with the first reel 210, rotate into the escape recess 212.

[0061] In some embodiments, the filter self-cleaning mechanism includes a filter 100. As shown in FIG5 , the filter 100 includes a first side edge 101 and a second side edge 102 that are opposite each other. The first side edge 101 and the second side edge 102 are folded and heat-fused to form mounting holes 110. Two mesh frames 120 are inserted into the two mounting holes 110 to support the first side edge 101 and the second side edge 102 of the filter 100, respectively.

[0062] In this embodiment, the filter screen 100 is made of a relatively soft material, and mounting holes 110 are formed on the first and second side edges 101, 102 of the filter screen 100 using hot melt molding, which prevents the mounting holes 110 from deforming. Two mesh frames 120 are inserted into the two mounting holes 110, respectively, achieving a stable connection between the filter screen 100 and the mesh frames 120. This makes installation of the filter screen 100 very convenient.

[0063] Alternatively, as shown in FIG6 , the mounting hole 110 is configured as a circle, and the mesh frame 120 is configured as a cylinder that matches the mounting hole 110. Thus, the circular design allows for a tighter fit between the mounting hole 110 and the mesh frame 120, thereby reducing the possibility of the filter 100 becoming loose or shifting during use.

[0064] Optionally, the axes of the two mounting through holes 110 are arranged in parallel, so that the filter screen 100 can be wound or unwound more evenly by the first reel 210 or the second reel 220 .

[0065] Optionally, the axis of the mesh frame 120 is coaxially arranged with the axis of the corresponding mounting through hole 110 , so as to facilitate the mesh frame 120 to be inserted into the mounting through hole 110 .

[0066] Optionally, the intersections of the meshes of the filter screen 100 are connected by hot-melt connection, which is beneficial to improving the overall strength of the filter screen 100.

[0067] 5 , the filter screen 100 is rectangular after unfolding. The filter screen 100 further includes a third side edge 103 and a fourth side edge 104 opposite to each other, and the mesh thickness of the third side edge 103 and the fourth side edge 104 is greater than that of the mesh thickness of other parts of the filter screen 100.

[0068] That is, the mesh thickness of the third side edge 103 is greater than the coarser mesh thickness of the first side edge 101 or the second side edge 102, and the mesh thickness of the fourth side edge 104 is greater than the coarser mesh thickness of the first side edge 101 or the second side edge 102. Furthermore, the mesh thickness of the third side edge 103 is greater than the mesh thickness of the area enclosed by the four edges of the filter screen 100. Furthermore, the mesh thickness of the fourth side edge 104 is greater than the mesh thickness of the area enclosed by the four edges of the filter screen 100.

[0069] In this embodiment, the first side edge 101 is connected to the first reel 210 via a mesh frame 120, and the second side edge 102 is connected to the second reel 220 via a mesh frame 120. During the reeling or unreeling process of the filter screen 100, the third side edge 103 and the fourth side edge 104 are always exposed and are more susceptible to damage at the edges. Therefore, using thicker mesh for the third and fourth side edges 103, 104 helps extend the service life of the filter screen 100.

[0070] In some embodiments, the filter self-cleaning mechanism includes a roller brush and a dust box. The roller brush is used to clean the filter 100 and includes a roller brush shaft 500. The dust box is composed of an upper box body 600 and a lower box body 610 connected together. The connection between the upper box body 600 and the lower box body 610 forms a roller brush shaft hole. The ends of the roller brush shaft 500 are respectively mounted in the two roller brush shaft holes.

[0071] In this embodiment, the roller brush shaft 500 is mounted within the roller brush shaft hole, which can ensure that the roller brush is not easily shaken or tilted during use. In addition, after the upper box body 600 and the lower box body 610 are disconnected, the roller brush can be easily removed and replaced, thereby improving the maintainability and service life of the roller brush.

[0072] Optionally, as shown in FIG9 , the upper housing 600 is provided with first semicircular openings 601 with downward openings on both sides, and the lower housing 610 is provided with second semicircular openings 611 with upward openings on both sides; and after the upper housing 600 and the lower housing 610 are connected, the first semicircular openings 601 and the second semicircular openings 611 on the same side enclose the roller brush shaft hole. The first semicircular openings 601 and the second semicircular openings 611 have the same diameter.

[0073] In this embodiment, after the upper and lower housings 600 and 610 are connected, the first and second semicircular openings 601 and 611 are aligned to form the roller brush shaft hole. When the upper housing 600 is removed, the roller brush shaft 500 is positioned above the second semicircular opening 611, making it easy to remove and replace the roller brush.

[0074] Optionally, a roller brush driving assembly is provided at the first end of the roller brush shaft 500, and the roller brush driving assembly is used to drive the roller brush shaft 500 to rotate. In this way, the bristles 501 clean the filter screen 100 when the roller brush shaft 500 rotates.

[0075] Optionally, the roller brush drive assembly includes a roller brush gear 520. The roller brush gear 520 is sleeved on the first end of the roller brush shaft 500 and is located outside the dust collection box. When the roller brush gear 520 rotates, it drives the roller brush shaft 500 to rotate. Thus, the roller brush gear 520 located outside the dust collection box can prevent dust accumulation.

[0076] Optionally, as shown in FIG8 , the roller brush gear 520 is engaged with the driving gear 401 of the drive motor 400 . When the drive motor 400 rotates, the roller brush gear 520 is driven to rotate. In this way, the drive motor 400 can simultaneously drive the first reel 210 , the second reel 220 , and the roller brush shaft 500 to rotate, thereby using the bristles 501 to clean the filter screen 100 during the process of rewinding or unwinding the filter screen 100 .

[0077] Optionally, a roller brush shaft sleeve 510 is further provided at the first end of the roller brush shaft 500. The roller brush shaft sleeve 510 is located on the side of the roller brush gear 520 facing the dust collection box and is disposed in the roller brush shaft hole. This helps reduce wear on the roller brush shaft 500 and the roller brush shaft hole.

[0078] Optionally, the roller brush shaft sleeve 510 is integrally formed with the roller brush gear 520. In this way, the roller brush shaft sleeve 510 rotates synchronously with the roller brush gear 520.

[0079] Optionally, as shown in FIG11 , flanges 511 are provided on both sides of the roller brush sleeve 510. One flange 511 is located inside the dust box and abuts against the inner wall of the dust box, while the other flange 511 is located outside the dust box and abuts against the outer wall of the dust box. This can limit the axial displacement of the roller brush sleeve 510, ensuring that the roller brush sleeve 510 is always located within the roller brush shaft hole.

[0080] Optionally, the two flanges 511 are both configured as circular rings with the same diameter, which is convenient for production.

[0081] In some embodiments, the filter self-cleaning mechanism includes a dust box. The dust box is used to receive dust from the filter 100 and includes an upper box body 600 and a lower box body 610. As shown in Figures 9 and 10, a first side of the upper box body 600 is connected to the lower box body 610 via a box body rotating shaft 604, and the upper box body 600 is rotatable around the box body rotating shaft 604. A second side of the upper box body 600 is fastened to the lower box body 610 via a box body buckle 605.

[0082] In this embodiment, the dust box adopts a split design, consisting of an upper box body 600 and a lower box body 610. During assembly, the first side of the upper box body 600 is first connected to the lower box body 610 via the box body rotation axis 604. Then, the second side of the upper box body 600 is rotated about the box body rotation axis 604 toward the lower box body 610. Finally, the second side of the upper box body 600 is snapped onto the lower box body 610 via the box body buckle 605. This allows for easy disassembly of the dust box, facilitating maintenance of the internal components and convenient cleaning or emptying of dust from the dust box.

[0083] Optionally, as shown in FIG10 , a case body rotation shaft 604 is provided at each end of the first side of the upper case body 600, and a case body shaft hole 613 is provided at each end of the first side of the lower case body 610. The two case body rotation shafts 604 are rotatably disposed in the two case body shaft holes 613. In this way, the upper case body 600 can stably rotate around the two case body rotation shafts 604.

[0084] Optionally, both ends of the first side of the lower case 610 protrude upward to form a case rotating plate 612, and a case shaft hole 613 is defined in the case rotating plate 612. A mounting notch is defined through the sidewall of the case shaft hole 613, through which the case shaft 604 is assembled. This allows the case shaft 604 to be assembled simply by inserting it into the case shaft hole 613 through the notch.

[0085] Optionally, as shown in FIG9 , a case buckle 605 is provided at each end of the second side of the upper case 600, and a case hook 614 is provided at each end of the second side of the lower case 610; wherein the two case hooks 614 can be respectively engaged with the two case buckles 605. In this way, the stability of the connection between the upper case 600 and the lower case 610 is improved by the two case buckles 605.

[0086] Optionally, a roller brush opening 602 is provided at the top of the upper housing 600. The roller brush is positioned within the dust collection box, with its bristles 501 extending out of the dust collection box through the roller brush opening 602. Thus, the filter 100 is positioned above the roller brush opening 602. As the roller brush rotates, the bristles 501 sweep the filter 100, and the swept dust falls into the dust collection box.

[0087] Optionally, a plurality of comb teeth 603 are provided on both sides of the roller brush opening 602 , and the plurality of comb teeth 603 are evenly arranged along the axial direction of the roller brush.

[0088] In this embodiment, as the roller brush rotates, the bristles 501 pass through the gaps between adjacent comb teeth 603. Dust on the bristles 501 is combed away by the comb teeth 603. The multiple comb teeth 603 are evenly arranged along the axial direction of the roller brush, facilitating uniform cleaning of the bristles 501. Furthermore, after removing the upper housing 600, the comb teeth 603 can be thoroughly cleaned.

[0089] Optionally, as shown in FIG11 , the comb teeth 603 are inclined from the sidewall of the roller brush opening 602 toward the bottom of the lower housing 610. The comb teeth 603 on both sides of the roller brush opening 602 have the same inclination angle. This inclined design of the comb teeth 603 facilitates dust on the comb teeth 603 to slide down into the lower housing 610.

[0090] In some embodiments, the filter self-cleaning mechanism includes a wheel and axle assembly. The wheel and axle assembly includes a gear and a gear shaft. The gear has a shaft hole, and the gear shaft is assembled into the shaft hole. As shown in Figures 12 and 13, an extrusion rib 521 is provided in the shaft hole, and an extrusion flat surface 522 is provided on the portion of the gear shaft located in the shaft hole. The extrusion rib 521 can form an interference fit with the extrusion flat surface 522.

[0091] In this embodiment, when assembling the wheel axle assembly, align the extrusion plane 522 with the extrusion rib 521, and then extend the gear shaft into the shaft hole. At this time, the extrusion rib 521 is partially crushed, and the gear shaft and the shaft hole form an interference fit. In this way, relative rotation between the gear shaft and the gear can be effectively prevented. Here, the extrusion rib 521 and the extrusion plane 522 can be used to form an interference fit between the first driven gear 410 and the first scroll 210 (as a gear shaft), the second driven gear 420 and the second scroll 220 (as a gear shaft), and the roller brush gear 520 and the roller brush shaft 500 (as a gear shaft), thereby ensuring the reliable operation of the entire filter self-cleaning mechanism.

[0092] Optionally, the length of the extrusion rib 521 is the same as the length of the extrusion plane 522. The length of the extrusion plane 522 is the same as the depth of the shaft hole. In this way, the contact area between the extrusion rib 521 and the extrusion plane 522 is larger, thereby improving the strength of the interference fit.

[0093] Optionally, the extrusion rib 521 is configured as a rectangle.

[0094] Optionally, the height of the extrusion rib 521 is 0.2 to 0.6 mm. In this way, the strength of the interference fit can be improved by limiting the height of the extrusion rib 521.

[0095] For example, the height of the extrusion rib 521 can be selected to be 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm or 0.6 mm.

[0096] Optionally, the width of the extrusion rib 521 is 0.3 to 0.7 mm. In this way, the strength of the interference fit can be improved by limiting the width of the extrusion rib 521.

[0097] Illustratively, the width of the extruded rib 521 may be selected to be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, or 0.7 mm.

[0098] Optionally, the extrusion rib 521 is configured as a triangle, with the corner vertices of the extrusion rib 521 facing the extrusion plane 522. In this way, the triangular extrusion rib 521 can form an interference fit with the extrusion plane 522.

[0099] Optionally, a plurality of extrusion ribs 521 are provided in the shaft hole, and all of the extrusion ribs 521 can form an interference fit with the extrusion plane 522. In this way, the strength of the interference fit can be improved by increasing the number of the extrusion ribs 521.

[0100] The above description and the accompanying drawings sufficiently illustrate the 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. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The 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 the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A filter self-cleaning mechanism, comprising: A roller brush, used for cleaning the filter screen (100), comprising a roller brush shaft (500); The dust collecting box is composed of an upper box body (600) and a lower box body (610) connected together, and the connection between the upper box body (600) and the lower box body (610) on both sides encloses a roller brush shaft hole; and the two ends of the roller brush shaft (500) are respectively mounted in the two roller brush shaft holes.

2. The filter self-cleaning mechanism according to claim 1, wherein: The upper box body (600) is provided with first semicircular openings (601) with openings facing downwards on both sides, and the lower box body (610) is provided with second semicircular openings (611) with openings facing upwards on both sides; Furthermore, after the upper box body (600) and the lower box body (610) are connected, the first semicircular opening (601) and the second semicircular opening (611) on the same side enclose and form a roller brush shaft hole.

3. The filter self-cleaning mechanism according to claim 2, wherein: The diameters of the first semicircular opening (601) and the second semicircular opening (611) are the same.

4. The filter self-cleaning mechanism according to any one of claims 1 to 3, wherein: A roller brush driving assembly is provided at the first end of the roller brush shaft (500), and the roller brush driving assembly is used to drive the roller brush shaft (500) to rotate.

5. The filter self-cleaning mechanism according to claim 4, wherein: The roller brush drive assembly includes: The roller brush gear (520) is sleeved on the first end of the roller brush shaft (500) and is located outside the dust collection box; when the roller brush gear (520) rotates, it drives the roller brush shaft (500) to rotate.

6. The filter self-cleaning mechanism according to claim 5, wherein: The first end of the roller brush shaft (500) is further provided with a roller brush shaft sleeve (510), which is located on the side of the roller brush gear (520) facing the dust collection box and is arranged in the roller brush shaft hole.

7. The filter self-cleaning mechanism according to claim 6, wherein: The roller brush shaft sleeve (510) and the roller brush gear (520) are integrally formed.

8. The filter self-cleaning mechanism according to claim 6 or 7, wherein: Flanges (511) are respectively provided on both sides of the roller brush shaft sleeve (510), wherein one flange (511) is located inside the dust collecting box and abuts against the inner wall of the dust collecting box, and the other shaft flange (511) is located outside the dust collecting box and abuts against the outer wall of the dust collecting box.

9. The filter self-cleaning mechanism according to claim 8, wherein: The two flanges (511) are both constructed in an annular shape and have the same diameter.

10. The filter self-cleaning mechanism according to any one of claims 1 to 9, wherein: The first side of the upper box body (600) is connected to the lower box body (610) through the box body rotating shaft (604), and the upper box body (600) can rotate around the box body rotating shaft (604); the second side of the upper box body (600) is clamped to the lower box body (610) through the box body buckle (605).

11. The filter self-cleaning mechanism according to claim 10, wherein: A box body rotating shaft (604) is respectively provided at both ends of the first side of the upper box body (600), and a box body shaft hole (613) is respectively provided at both ends of the first side of the lower box body (610); The two box body rotating shafts (604) are rotatably disposed in the two box body shaft holes (613) respectively.

12. The filter self-cleaning mechanism according to claim 11, wherein: Both ends of the first side of the lower box body (610) protrude upward to form a box body rotating plate (612), and the box body shaft hole (613) is opened on the box body rotating plate (612).

13. The filter self-cleaning mechanism according to claim 12, wherein: A through-going installation notch is provided on the side wall of the box body shaft hole (613), and the box body rotating shaft (604) is assembled into the box body shaft hole (613) through the installation notch.

14. The filter self-cleaning mechanism according to any one of claims 10 to 13, wherein: A box body buckle (605) is provided at each end of the second side of the upper box body (600), and a box body hook (614) is provided at each end of the second side of the lower box body (610); The two box body hooks (614) can be respectively connected to the two box body buckles (605).

15. The filter self-cleaning mechanism according to any one of claims 1 to 14, wherein: A roller brush opening (602) is provided on the top of the upper box body (600), wherein the roller brush is arranged in the dust collection box, and the bristles (501) of the roller brush extend out of the dust collection box through the roller brush opening (602).

16. The filter self-cleaning mechanism according to claim 15, wherein: A plurality of comb teeth (603) are provided on both sides of the roller brush opening (602), and the plurality of comb teeth (603) are evenly arranged along the axial direction of the roller brush.

17. The filter self-cleaning mechanism according to claim 16, wherein: The comb teeth (603) are inclined from the side wall of the roller brush opening (602) toward the bottom of the lower box body (610).

18. The filter self-cleaning mechanism according to claim 17, wherein: The comb teeth (603) on both sides of the roller brush opening (602) have the same inclination angle.

19. The filter self-cleaning mechanism according to any one of claims 1 to 18, further comprising: The axle assembly includes a gear and a gear shaft, wherein the gear is provided with a shaft hole, and the gear shaft is assembled into the shaft hole; An extrusion rib (521) is provided in the shaft hole, and an extrusion plane (522) is provided on the portion of the gear shaft located in the shaft hole, and the extrusion rib (521) can form an interference fit with the extrusion plane (522).

20. The filter self-cleaning mechanism according to claim 19, wherein: The length of the extrusion rib (521) is the same as the length of the extrusion plane (522).

21. The filter self-cleaning mechanism according to claim 19 or 20, wherein: The length of the extrusion plane (522) is the same as the depth of the shaft hole.

22. The filter self-cleaning mechanism according to any one of claims 19 to 21, wherein: The extrusion rib (521) is configured as a rectangle.

23. The filter self-cleaning mechanism according to claim 22, wherein: The height of the extrusion rib (521) is 0.2 to 0.6 mm.

24. The filter self-cleaning mechanism according to claim 22 or 23, wherein: The width of the extruded rib (521) is 0.3 to 0.7 mm.

25. The filter self-cleaning mechanism according to any one of claims 19 to 21, wherein: The extrusion rib (521) is constructed in a triangular shape.

26. The filter self-cleaning mechanism according to claim 25, wherein: The corner vertices of the extrusion rib (521) face the extrusion plane (522).

27. The filter self-cleaning mechanism according to any one of claims 19 to 26, wherein: A plurality of extrusion ribs (521) are provided in the shaft hole, and all the extrusion ribs (521) can form an interference fit with the extrusion plane (522).

28. An air conditioner comprising the filter self-cleaning mechanism according to any one of claims 1 to 27.

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