Filter screen self-cleaning mechanism and air conditioner indoor unit

Abstract

The utility model relates to the technical field of air conditioners, and discloses a filter screen self-cleaning mechanism which comprises a filter screen, a first reel arranged at the first end of the filter screen and a second reel arranged at the second end of the filter screen and further comprises a driving assembly used for driving the filter screen to be wound. The driving assembly comprises a driving gear, a first driven gear, a second driven gear and an intermediate gear. The filter screen is tensioned between the first winding shaft and the second winding shaft, when the driving motor drives the driving gear to rotate, the first driven gear drives the first winding shaft to rotate so as to wind the first end of the filter screen, and the second driven gear drives the second winding shaft to rotate so as to unwind the second end of the filter screen. According to the filter screen self-cleaning mechanism, the stability of the filter screen in the winding and unwinding processes is improved. The utility model further provides the air conditioner indoor unit.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, for example, to a filter self-cleaning mechanism and an air conditioning indoor unit. Background Art

[0002] A filter is provided at the air inlet of the air conditioner indoor unit to filter air impurities such as dust at the air inlet.

[0003] The filter needs to be cleaned after being used for a period of time to remove dust accumulated on the surface of the filter in time. In the prior art, the filter and the brush are controlled to move relative to each other so that the brush can remove dust and other blockages on the surface of the filter during the rotation process.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the existing filter dust removal mechanism, two driving mechanisms are used to drive and rotate the two ends of the filter respectively to realize the movement of the filter during the dust removal process of the filter. The arrangement of the two driving mechanisms brings instability to the installation of the filter dust removal mechanism.

[0006] 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 the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] 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 components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiment of the present disclosure provides a self-cleaning mechanism for a filter, comprising a filter, a first reel arranged at a first end of the filter, and a second reel arranged at a second end of the filter, and also comprising a driving component for driving the filter to be rolled up, wherein the driving component comprises: a driving gear connected to a driving motor; a first driven gear meshingly connected to the driving gear, and the first driven gear is arranged on the first reel of the filter, and is used to drive the first reel to rotate; a second driven gear is arranged on the second reel of the filter, and is used to drive the second reel to rotate; an intermediate gear meshingly arranged between the first driven gear and the second driven gear, and the first driven gear drives the second driven gear to rotate via the intermediate gear, wherein the filter is tensioned between the first reel and the second reel, and when the driving motor drives the driving gear to rotate, the first driven gear drives the first reel to rotate to roll up the first end of the filter, and the second driven gear drives the second reel to rotate to unroll the second end of the filter.

[0009] In some optional embodiments, the diameter of the first driven gear is greater than the diameter of the intermediate gear; and / or the diameter of the second driven gear is greater than the diameter of the intermediate gear.

[0010] In some optional embodiments, the thickness of the driving gear is greater than the thickness of the first driven gear; and / or, the thickness of the driving gear is greater than the thickness of the second driven gear.

[0011] In some optional embodiments, the first driven gear has a first rotation center, the second driven gear has a second rotation center, the intermediate gear has a third rotation center, the line connecting the first rotation center and the third rotation center obtains a first line, and the line connecting the second rotation center and the third rotation center obtains a second line, wherein the angle between the first line and the second line is greater than or equal to 90°.

[0012] In some optional embodiments, the first connecting line intersects the first vertical line at a third rotation center, wherein the first rotation center is located on a side of the first vertical line close to the driving gear; and / or, the second connecting line intersects the first horizontal line at a third rotation center line, wherein the second rotation center is located on a side of the first horizontal line away from the driving gear.

[0013] In some optional embodiments, the filter self-cleaning mechanism also includes: a brush assembly for cleaning the filter during the winding process, wherein the driving assembly also includes a brush driven gear for driving the brush assembly to rotate, and the brush driven gear is meshingly connected to the driving gear.

[0014] In some optional embodiments, the diameter of the driving gear is greater than the diameter of the brush driven gear.

[0015] In some optional embodiments, the filter self-cleaning mechanism also includes a base for installing a drive assembly, and the base includes: a first mounting site for installing a first driven gear, and the first driven gear passes through the first mounting site to be connected to the first reel; a second mounting site for installing a second driven gear, and the second driven gear passes through the second mounting site to be connected to the second reel; a third mounting site for installing an intermediate gear, wherein the first mounting site is provided with a first mounting platform with a first protrusion height, the second mounting site is provided with a second mounting platform with a second protrusion height, and the third mounting site is provided with a third mounting platform with a third protrusion height, and the first protrusion height or the second protrusion height is less than the third protrusion height.

[0016] In some optional embodiments, the filter self-cleaning mechanism further includes: a dust box for collecting dust, wherein the brush assembly is installed in the dust box.

[0017] An embodiment of the present disclosure provides an air-conditioning indoor unit, comprising the filter self-cleaning mechanism as described above.

[0018] The filter self-cleaning mechanism and air conditioner indoor unit provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] The filter self-cleaning mechanism provided by the embodiment of the present disclosure includes a filter, a first reel and a second reel respectively arranged at both ends of the filter, and a driving assembly for driving the filter to be rolled up and unrolled. The driving assembly includes a driving gear, a first driven gear, a second driven gear and an intermediate gear. The driving gear is directly connected to the driving motor and rotates under the drive of the driving motor. The first driven gear is meshed and connected with the driving gear. In addition, the first driven gear is directly connected to the first reel of the filter, and the second driven gear is directly connected to the second reel of the filter. The first driven gear drives the second driven gear to rotate via the intermediate gear. The filter is tensioned between the first reel and the second reel. When the driving motor drives the driving gear to rotate, the first driven gear drives the first reel to rotate to roll up the first end of the filter. At the same time, the second driven gear drives the second reel to rotate to unroll the second end of the filter.

[0020] The filter self-cleaning mechanism provided in the embodiment of the present disclosure drives one end of the filter to be rolled up by a driving assembly, while the other end is unrolled synchronously, so as to realize the movement of the filter. The filter can be further cleaned by a brush assembly during the movement. Furthermore, the first driven gear and the second driven gear are meshed and driven by an intermediate gear, so that the spacing between the first driven gear and the second driven gear is increased, thereby increasing the space for rolling up and unrolling at both ends of the filter, and improving the stability of the filter during the rolling up and unrolling process.

[0021] 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

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of an air-conditioning indoor unit provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of a filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of a drive assembly of a filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0026] Figure 4is a structural schematic diagram of a drive assembly of another filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0027] Figure 5 is a structural schematic diagram of a drive assembly of another filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural schematic diagram of a drive assembly of another filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of a drive assembly of another filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0030] Figure 8 is a structural schematic diagram of a base provided by an embodiment of the present disclosure;

[0031] Fig. 9 is a schematic diagram of the structure of a filter provided by an embodiment of the present disclosure;

[0032] Fig.10 is a schematic diagram of the structure of a filter provided by an embodiment of the present disclosure;

[0033] Fig.11 is a structural schematic diagram of a drive assembly of another filter self-cleaning mechanism provided by an embodiment of the present disclosure;

[0034] Fig.12 yes Fig.11 A magnified view of a selected portion;

[0035] Fig.13 It is a schematic diagram of the structure of the rotating shaft provided in an embodiment of the present disclosure.

[0036] Reference numerals:

[0037] 100: driving motor; 110: driving gear; 121: first driven gear; 122: second driven gear; 123: intermediate gear; 124: brush driven gear; 1211: first rotation center; 1221: second rotation center; 1231: third rotation center;

[0038] 200: base; 201: first mounting position; 202: second mounting position; 203: third mounting position;

[0039] 300: filter screen; 310: first tensioning section; 311: first tensioning front end; 312: first tensioning rear end; 320: second tensioning section; 321: second tensioning front end; 322: second tensioning rear end; 330: transmission section; 301: first vertical line; 302: second vertical line;

[0040] 400: filter support; 410: support end;

[0041] 500: rotating shaft; 510: first reinforcing rib; 520: second reinforcing rib;

[0042] 600: Air conditioner indoor unit; 610: Air inlet. DETAILED DESCRIPTION

[0043] In order to be able to understand the features and technical contents 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 attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the 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.

[0044] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0045] 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 have 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.

[0046] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" 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, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0047] Unless otherwise stated, the term "plurality" means two or more.

[0048] 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 indicates: A or B.

[0049] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0050] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0051] The embodiment of the present disclosure provides a filter self-cleaning mechanism, comprising a filter 300, a first reel disposed at a first end of the filter 300, and a second reel disposed at a second end of the filter 300, and also comprising a driving assembly for driving the filter 300 to be rolled up, wherein the driving assembly comprises a driving gear 110, a first driven gear 121, a second driven gear 122, and an intermediate gear 123. The driving gear 110 is connected to the driving motor 100; the first driven gear 121 is meshedly connected to the driving gear 110, and the first driven gear 121 is disposed on the first reel of the filter 300, and is used to drive the first reel to rotate; the second driven gear 122 is disposed on the second reel of the filter 300, and is used to drive the second reel to rotate; the intermediate gear 123 is meshedly disposed between the first driven gear 121 and the second driven gear 122, and the first driven gear 121 drives the second driven gear 122 to rotate via the intermediate gear 123. Among them, the filter 300 is tensioned between the first reel and the second reel. When the driving motor 100 drives the driving gear 110 to rotate, the first driven gear 121 drives the first reel to rotate to reel in the first end of the filter 300, and the second driven gear 122 drives the second reel to rotate to unreel the second end of the filter 300.

[0052] The disclosed embodiment provides a filter self-cleaning mechanism, including a driving gear 110, a first driven gear 121, a second driven gear 122 and an intermediate gear 123. The first driven gear 121 is connected to the first reel of the filter 300, and the second driven gear 122 is connected to the second reel of the filter 300, and the two ends of the filter 300 are driven to be wound and unwound through the driving assembly. For example, when the driving motor 100 rotates in the forward direction, the first driven gear 121 drives the first reel to rotate to wind up the first end of the filter 300, and at the same time, the second driven gear 122 drives the second reel to rotate synchronously to unwind the second end of the filter 300, so that the filter 300 can be cleaned during the winding and unwinding process. When cleaning is completed, the driving motor 100 is controlled to reverse, and the first driven gear 121 drives the first reel to rotate to unwind the first end of the filter 300. At the same time, the second driven gear 122 drives the second reel to rotate synchronously to rewind the second end of the filter 300, so that the filter 300 returns to the state of blocking dust.

[0053] Optionally, the filter screen 300 includes a filter screen segment that performs a blocking and filtering function and a winding screen segment wound around the first reel and the second reel, wherein the length of the winding screen segment is greater than or equal to the length of the filter screen segment. Optionally, the winding screen segment and the filter screen segment are integrally formed.

[0054] Optionally, in the initial state, the winding state of the filter 300 on the first reel and the second reel can be that the winding segment of the filter is wound on the second reel as the winding surplus of the filter, and the first reel has no filter wound. At this time, the second tensioning section 320 is located on the left side of the second reel to achieve the winding of the first reel and the unwinding of the second reel. Fig. 9 shown.

[0055] The filter self-cleaning mechanism provided in the embodiment of the present disclosure uses a driving gear 110 to drive the first driven gear 121 and the second driven gear 122 simultaneously, so that the driving assembly for driving the rotation of the filter 300 can be integrated on one side of the filter 300. Compared with the existing structure in which the driving assembly of the filter 300 is arranged on both sides of the filter 300, the filter self-cleaning mechanism provided in the embodiment of the present disclosure saves the installation space of the driving assembly.

[0056] In the driving assembly of the filter self-cleaning mechanism provided in the embodiment of the present disclosure, a driving gear 110 is used to mesh the two driven gears at both ends of the filter 300, so that one end of the filter 300 is wound while the other end is unwound synchronously, that is, the two ends of the filter 300 are driven by a driving mechanism, and the number of driving motors 100 is reduced. At the same time, an intermediate gear 123 is also provided, and the intermediate gear 123 is meshed between the first driven gear 121 and the second driven gear 122, and the first driven gear 121 drives the second driven gear 122 to rotate through the intermediate gear 123. The provision of the intermediate gear 123 prevents the first driven gear 121 and the second driven gear 122 from directly transmitting, thereby improving the transmission stability of the first driven gear 121 and the second driven gear 122, and at the same time, increases the distance between the two ends of the filter 300, thereby improving the movement stability of the filter 300 during the winding and unwinding process.

[0057] Optionally, the diameter of the first driven gear 121 is greater than the diameter of the intermediate gear 123 ; and / or the diameter of the second driven gear 122 is greater than the diameter of the intermediate gear 123 .

[0058] Compared with the first driven gear 121 and / or the second driven gear 122, the diameter of the intermediate gear 123 is smaller, which reduces the installation space required for the entire drive assembly. Figure 2 Optionally, the diameter of the first driven gear 121 is equal to the diameter of the second driven gear 122 .

[0059] Optionally, the thickness of the driving gear 110 is greater than the thickness of the first driven gear 121; and / or, the thickness of the driving gear 110 is greater than the thickness of the second driven gear 122. Optionally, the driving gear 110, the first driven gear 121, and the second driven gear 122 are all full-tooth gears, and the thickness of the driving gear 110 is greater than the thickness of the first driven gear 121 or the second driven gear 122, so that the meshing stability of the driving gear 110 and the first driven gear 121 is improved. Optionally, the thickness of the first driven gear 121 is equal to the thickness of the second driven gear 122, such as Figure 3 shown.

[0060] Optionally, the first driven gear 121 has a first rotation center 1211, the second driven gear 122 has a second rotation center 1221, the intermediate gear 123 has a third rotation center 1231, the first connection line is obtained by connecting the first rotation center 1211 and the third rotation center 1231, and the second connection line is obtained by connecting the second rotation center 1221 and the third rotation center 1231, wherein the angle between the first connection line and the second connection line is greater than or equal to 90°, such as Figure 4 and Figure 5 shown.

[0061] like Figure 5 As shown, the angle a between the first connecting line and the second connecting line is greater than or equal to 90°, so that the transmission meshing of the intermediate gear 123 with the first driven gear 121 and the second driven gear 122 is achieved while using the smallest possible installation space for the drive assembly. At the same time, the angle a between the first connecting line and the second connecting line is greater than or equal to 90°, so that the first end and the second end of the filter 300 can be inclined, thereby improving the transmission stability of the drive assembly during the process of winding and unwinding the filter 300.

[0062] The first connecting line intersects with the first vertical line at the third rotation center 1231, wherein the first rotation center 1211 is located on the side of the first vertical line close to the driving gear 110. Figure 7 As shown, compared with the third rotation center 1231, the first rotation center 1211 is located on the side of the first vertical line close to the driving gear 110. The second connecting line intersects the first horizontal line at the third rotation center line, wherein the second rotation center is located on the side of the first horizontal line away from the driving gear 110, that is, the second rotation center 1221 is located on the upper part of the first horizontal line, as shown in FIG. Figure 6 In the filter self-cleaning mechanism provided by the embodiment of the present disclosure, the first rotation center 1211 is not located on the same vertical line as the third rotation center 1231, and the second rotation center 1221 is not located on the same horizontal line as the third rotation center 1231, so that the first end and the second end of the filter 300 can be inclined, thereby improving the transmission stability of the filter 300 during the winding and unwinding process.

[0063] Optionally, the aforementioned filter self-cleaning mechanism further includes a brush assembly for cleaning the filter 300 during winding or unwinding. The driving assembly further includes a brush driven gear 124 for driving the brush assembly to rotate, and the brush driven gear 124 is meshedly connected with the driving gear 110 .

[0064] The filter self-cleaning mechanism provided in the embodiment of the present disclosure uses a brush assembly to clean the dust on the moving filter 300. At the same time, the brush driven gear 124 is used to drive the brush assembly to rotate, so that the filter 300 and the brush move relative to each other, thereby improving the cleaning effect of the brush assembly on the dust on the filter 300. Optionally, the brush driven gear 124 is arranged directly below the first driven gear 121 or the second driven gear 122 to clean the first end or the second end of the filter 300. For example, Figure 3As shown, the brush driven gear 124 is arranged directly below the first driven gear 121. Optionally, the length of the brush assembly is greater than or equal to the length of the first end or the second end of the filter 300, so that the brush assembly improves the comprehensiveness of cleaning the filter 300. Optionally, the diameter of the driving gear 110 is greater than the diameter of the brush driven gear 124, so that the number of rotations of the brush is increased, and the cleaning effect of the brush on the filter 300 is improved.

[0065] Optionally, the filter screen self-cleaning mechanism provided in the embodiment of the present disclosure further includes a base 200 for installing a driving assembly, and the base 200 includes a first mounting site 201, a second mounting site 202, and a third mounting site 203. The first mounting site 201 is used to install the first driven gear 121, and the first driven gear 121 passes through the first mounting site 201 to connect with the first reel, the second mounting site 202 is used to install the second driven gear 122, and the second driven gear 122 passes through the second mounting site 202 to connect with the second reel, and the third mounting site 203 is used to install the intermediate gear 123. Among them, the first mounting site 201 is provided with a first mounting platform with a first protruding height, the second mounting site 202 is provided with a second mounting platform with a second protruding height, and the third mounting site 203 is provided with a third mounting platform with a third protruding height, and the first protruding height or the second protruding height is less than the third protruding height. In the embodiment of the present disclosure, the third mounting site 203 for mounting the intermediate gear 123 has a third protrusion height, and the third protrusion height is greater than the first protrusion height and the second protrusion height, so that the meshing stability of the intermediate gear 123 with the first driven gear 121 and the second driven gear 122 is improved. Optionally, the first protrusion height is equal to the second protrusion height, such as Figure 8 shown.

[0066] Optionally, the filter self-cleaning mechanism provided in the embodiment of the present disclosure further includes a dust box for collecting dust. The brush assembly is installed in the dust box. In the embodiment of the present disclosure, the brush assembly is installed in the dust box, and the dust box is detachably connected to the housing of the air conditioner indoor unit 600, so that the brush assembly can be disassembled and cleaned, which facilitates the cleaning of the brush assembly.

[0067] Optionally, the filter 300 includes a first tensioning section 310 directly connected to the first reel, a second tensioning section 320 directly connected to the second reel, and a transmission section 330 disposed between the first tensioning section 310 and the second tensioning section 320, and the first tensioning section 310 is inclined. In the disclosed embodiment, the first tensioning section 310 is inclined, thereby improving the stability of the first reel in winding or unwinding the first end of the filter 300. The filter self-cleaning mechanism also includes a filter bracket 400. The transmission section 330 of the filter 300 can be understood as a portion supported by the filter bracket 400. Due to the supporting effect of the filter bracket, the shape of the transmission section is the same as the supporting shape formed by the filter bracket; the first tensioning section 310 and the second tensioning section 320 are linear, such as Fig. 9 and Fig.10 shown.

[0068] Optionally, the first tensioning section 310, the second tensioning section 320 and the transmission section 330 are integrally formed, and the first tensioning section 310, the transmission section 330 and the second tensioning section 320 are not specific sections of the filter screen 300, but the parts of the filter screen 300 tensioned at both ends during the transmission process of the filter screen 300 or at a certain transmission stage of the filter screen 300 during transmission are the first tensioning section 310 and the second tensioning section 320. That is, as the filter screen 300 is rolled up or unrolled, the parts of the filter screen 300 indicated by the first tensioning section 310 and the second tensioning section 320 change accordingly.

[0069] Optionally, the first tensioning section 310 includes a first tensioning front end 311 directly connected to the transmission section 330 and a first tensioning rear end 312 directly connected to the first reel, wherein the first vertical line 301 intersects with the first tensioning front end 311, and the first tensioning rear end 312 is located on the side of the first vertical line 301 close to the driving gear 110. The second tensioning section 320 is tilted. The second tensioning section 320 includes a second tensioning front end 321 directly connected to the transmission section 330 and a second tensioning rear end 322 directly connected to the second reel, wherein the second vertical line 302 intersects with the second tensioning front end 321, and the second tensioning rear end 322 is located on the side of the second vertical line 302 close to the driving gear 110. In this way, the first tensioning section 310 and the second tensioning section 320 are both inclined, and under the premise of improving the transmission stability of the winding and unwinding of the filter screen 300, the first tensioning rear end 312 and the second tensioning rear end 322 are close to each other, thus improving the meshing transmission stability between the first driven gear 121 and the second driven gear 122. Fig.10 shown.

[0070] Understandably, Fig. 9 The position pointed by 312 is the first scroll axis, and the position pointed by 322 is the second scroll axis.

[0071] Optionally, the angle between the first tensioning section 310 and the first vertical line 301 is greater than or equal to 10° and less than or equal to 45°. The angle between the second tensioning section 320 and the second vertical line 302 is greater than or equal to 20° and less than or equal to 60°. The inclination angle of the first tensioning section 310 should not be too large, and similarly, the inclination angle of the second tensioning section 320 should not be too large, so that the transition stability from the transmission section 330 to the first tensioning section 310 or the second tensioning section 320 is improved. Optionally, the inclination angle of the first tensioning section 310 is smaller than the inclination angle of the second tensioning section 320.

[0072] Optionally, the filter self-cleaning mechanism further includes a filter support 400 and a rotating shaft 500. The filter support 400 is used to support the filter 300, and the filter support 400 includes a support end 410 at the rotation position of the filter 300, and the rotating shaft 500 is arranged at the support end 410, and the rotating shaft 500 is used to support the filter 300 to rotate, wherein the diameter of the rotating shaft 500 is greater than or equal to the support thickness of the support end 410.

[0073] In the filter self-cleaning mechanism provided in the embodiment of the present disclosure, the filter 300 is a two-layer structure, that is, the filter 300 includes an upper filter and a lower filter, and one end of the upper filter is set on the first reel, and one end of the lower filter is set on the second reel. At the same time, the upper filter and the lower filter rotate at the end 410 of the bracket via the rotating shaft 500. It can also be understood that the first reel and the second reel are located on one side of the double-layer filter 300, and the end 410 of the bracket is located on the other side of the double-layer filter 300. Fig. 9 and Fig.10 The end 410 of the bracket is provided with a rotating shaft 500, and the upper filter screen can rotate at the rotating shaft 500 to become the lower filter screen after rotation.

[0074] In the filter self-cleaning mechanism provided in the embodiment of the present disclosure, the diameter H2 of the rotating shaft 500 is greater than or equal to the thickness H1 of the bracket end 410, thereby reducing the friction between the filter 300 and the filter bracket 400. Optionally, the rotating shaft 500 is partially reduced in glue to prevent the size from being too thick and shrinking due to injection molding, and is conducive to lightweighting of the component.

[0075] Optionally, the rotating shaft 500 includes a first reinforcing rib 510 arranged along the length direction of the rotating shaft 500, and the length of the first reinforcing rib 510 is equal to the length of the rotating shaft 500. For example, when the driving motor 100 rotates forward, the upper filter screen rotates at the rotating shaft 500, or when the driving motor 100 rotates reversely, the lower filter screen rotates at the rotating shaft 500. It can be seen that the rotating shaft 500 needs to bear a large supporting force. The provision of the first reinforcing rib 510 increases the supporting force of the rotating shaft 500 on the filter screen 300 at the rotating position.

[0076] Optionally, the number of the first reinforcing ribs 510 is plural, wherein the plurality of first reinforcing ribs 510 are symmetrically arranged along the outer circumference of the rotating shaft 500. For example, the number of the first reinforcing ribs 510 is 2, 3 or 4, etc., and the plurality of first reinforcing ribs 510 are symmetrically arranged along the outer circumference of the rotating shaft 500. Fig.13 shown.

[0077] Optionally, the rotating shaft 500 further includes a second reinforcing rib 520 disposed along the radial direction of the rotating shaft 500, wherein the second reinforcing rib 520 is connected to the first reinforcing rib 510. Fig.13 As shown, the rotating shaft 500 includes a plurality of radially arranged second reinforcing ribs 520 . The second reinforcing ribs 520 are arranged between two adjacent first reinforcing ribs 510 , and two ends of the second reinforcing ribs 520 are respectively connected to the first reinforcing ribs 510 .

[0078] Optionally, the bracket end 410 of the filter self-cleaning mechanism includes a first side facing the rotating shaft 500, wherein the first side is provided with an inwardly recessed arc-shaped groove. In the process of supporting the filter 300, the rotating shaft 500 may be deformed due to excessive force, and the provision of the arc-shaped groove allows a safe gap between the rotating shaft 500 and the bracket end 410 to ensure that the rotating shaft 500 can smoothly realize the supporting and rotating function of the filter 300. Optionally, the gap between the rotating shaft 500 and the first side of the bracket end 410 is 0.5-1 mm.

[0079] Optionally, the filter support 400 has a certain thickness to separate the upper filter from the lower filter to prevent the problem of excessive wind resistance caused by the distance between the upper filter and the lower filter being too small. Optionally, the thickness of the filter support 400 is greater than or equal to 5 mm.

[0080] Optionally, the filter support 400 includes transverse support ribs and vertical support ribs, wherein the transverse support ribs include transverse support upper ribs and transverse support lower ribs arranged below the transverse support upper ribs, and the width of the transverse support upper ribs is greater than the width of the transverse support lower ribs. The vertical support ribs include vertical support upper ribs and vertical support lower ribs arranged below the vertical support upper ribs, and the width of the vertical support upper ribs is greater than the width of the vertical support lower ribs.

[0081] The filter support 400 includes transverse support ribs and longitudinal support ribs that are staggered horizontally and vertically. The upper transverse support ribs are located at the upper part, and the lower transverse support ribs are located at the lower part. In addition, the width of the upper transverse support ribs is greater than the width of the lower transverse support ribs. It can be understood that when projected from the top, the upper transverse support ribs can completely cover the lower transverse support ribs. Similarly, the upper vertical support ribs are located at the upper part, and the lower longitudinal support ribs are located at the lower part. In addition, the width of the upper longitudinal support ribs is greater than the width of the lower longitudinal support ribs. It can be understood that when projected from the top, the upper longitudinal support ribs can completely cover the lower longitudinal support ribs. In this way, during injection molding, the flash burrs generated by the injection molding of the filter support 400 do not directly contact the filter 300, which can prevent the filter 300 from being scratched.

[0082] The disclosed embodiment also provides an air-conditioning indoor unit 600, comprising the aforementioned filter self-cleaning mechanism.

[0083] Optionally, the air conditioner indoor unit 600 can be an on-hook unit, and the filter self-cleaning mechanism is disposed at the air inlet 610 of the air conditioner indoor unit 600. When it is detected that a lot of dust is deposited on the surface of the filter 300, or when the preset cleaning time is reached, the air conditioner can be controlled to start the filter self-cleaning mode when the air conditioner is idle to clean the dust deposited on the filter 300.

[0084] When the air conditioner receives the filter self-cleaning instruction, it controls the driving assembly to rotate to drive the filter 300 to rotate, and at the same time drives the brush assembly to rotate, so that the filter 300 and the brush assembly move relative to each other, and the brush assembly cleans the dust on the filter 300.

[0085] 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 explicitly 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, characterized in that: The invention comprises a filter screen, a first reel arranged at a first end of the filter screen, and a second reel arranged at a second end of the filter screen, and also comprises a driving assembly for driving the filter screen to be rolled up, wherein the driving assembly comprises: A driving gear connected to a driving motor; A first driven gear is meshed and connected with the driving gear, and the first driven gear is arranged on the first reel of the filter screen, and is used to drive the first reel to rotate; A second driven gear is disposed on the second reel of the filter screen and is used to drive the second reel to rotate; The intermediate gear is meshed between the first driven gear and the second driven gear. The first driven gear drives the second driven gear to rotate through the intermediate gear. The filter is tensioned between the first reel and the second reel. When the driving motor drives the driving gear to rotate, the first driven gear drives the first reel to rotate to reel in the first end of the filter, and the second driven gear drives the second reel to rotate to unreel the second end of the filter.

2. The filter self-cleaning mechanism according to claim 1, characterized in that: The diameter of the first driven gear is greater than the diameter of the intermediate gear; and / or, The diameter of the second driven gear is larger than the diameter of the intermediate gear.

3. The filter self-cleaning mechanism according to claim 1, characterized in that: The thickness of the driving gear is greater than the thickness of the first driven gear; and / or, The thickness of the driving gear is greater than the thickness of the second driven gear.

4. The filter self-cleaning mechanism according to claim 1, characterized in that: The first driven gear has a first rotation center, the second driven gear has a second rotation center, the intermediate gear has a third rotation center, the first rotation center and the third rotation center are connected to obtain a first connection line, and the second rotation center and the third rotation center are connected to obtain a second connection line. The angle between the first connecting line and the second connecting line is greater than or equal to 90°.

5. The filter self-cleaning mechanism according to claim 4, characterized in that: The first connecting line intersects the first vertical line at a third rotation center, wherein the first rotation center is located on a side of the first vertical line close to the driving gear; and / or, The second connecting line intersects the first horizontal line at a third rotation center line, wherein the second rotation center is located on a side of the first horizontal line away from the driving gear.

6. The filter screen self-cleaning mechanism according to any one of claims 1 to 5, characterized in that: Also includes: The brush assembly is used to clean the filter screen during the winding process. The driving assembly further comprises a brush driven gear for driving the brush assembly to rotate, and the brush driven gear is meshingly connected with the driving gear.

7. The filter self-cleaning mechanism according to claim 6, characterized in that: The diameter of the driving gear is greater than the diameter of the brush driven gear.

8. The filter self-cleaning mechanism according to claim 6, characterized in that: Also included is a base for mounting the drive assembly, the base comprising: A first mounting site is used to mount a first driven gear, and the first driven gear passes through the first mounting site and is connected to the first reel; A second mounting site is used to mount a second driven gear, and the second driven gear passes through the second mounting site and is connected to the second reel; The third mounting position is used to install the intermediate gear. Among them, the first mounting site is provided with a first mounting platform with a first protrusion height, the second mounting site is provided with a second mounting platform with a second protrusion height, and the third mounting site is provided with a third mounting platform with a third protrusion height, and the first protrusion height or the second protrusion height is smaller than the third protrusion height.

9. The filter self-cleaning mechanism according to claim 8, characterized in that: Also includes: Dust box, used to collect dust, Wherein, the brush assembly is installed in the dust collection box.

10. An air conditioner indoor unit, characterized in that: It comprises a filter self-cleaning mechanism as described in any one of claims 1 to 9.

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