Mesh enclosure and air conditioner

Abstract

The utility model discloses a mesh enclosure and an air conditioner, and relates to the technical field of air conditioners, the mesh enclosure comprises an inner frame, an outer frame and a plurality of grid bars connected between the inner frame and the outer frame. According to the technical scheme, the grid bar is improved, the grid bar is provided with the first arc-shaped section and the second arc-shaped section which are adjacent, the first arc-shaped section is connected with the outer frame, the first arc-shaped section is arranged in a protruding mode from the inner side to the outer side, the distance between the tail end of the blade and the mesh enclosure is increased, and therefore the matching degree of the air outlet amount and the air outlet distance at the tail end of the blade is improved; and therefore, the noise caused by flow separation and higher turbulence energy at the tail ends of the blades is reduced. And secondly, the first arc-shaped section protrudes towards the outer side, the second arc-shaped section protrudes towards the inner side, the relative design can help airflow to be more naturally distributed when the airflow penetrates through the mesh enclosure, and noise caused by the fact that the airflow intensively impacts the mesh enclosure is avoided. In addition, by reasonably distributing the amplitude of the arc-shaped section, interference between the blades and airflow can be reduced, and noise is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a mesh cover and an air conditioner. Background Technology

[0002] In existing technologies, the air outlet of an air conditioner outdoor unit is equipped with a mesh cover. This mesh cover is typically used to protect the internal components of the outdoor unit and to prevent hands or other objects from accidentally entering the fan blade area, thus avoiding accidental injury or damage to the equipment. However, the presence of the mesh cover can interfere with airflow, and this airflow disturbance can cause additional noise to be generated when the air conditioner outdoor unit is operating. Utility Model Content

[0003] The main purpose of this invention is to propose a mesh cover and an air conditioner, which aims to reduce the noise interference caused by the mesh cover to the airflow.

[0004] To achieve the above objectives, the present invention proposes a mesh cover having an inner side and an outer side, the mesh cover comprising:

[0005] Inner frame;

[0006] An outer frame, surrounding the outer periphery of the inner frame; and

[0007] Multiple grid bars are connected to the inner frame and the outer frame, and the multiple grid bars are distributed circumferentially at intervals along the inner frame; each grid bar has an adjacent first arc segment and a second arc segment, the first arc segment is connected to the outer frame, the first arc segment protrudes from the inner side to the outer side, and the second arc segment protrudes from the outer side to the inner side.

[0008] In one embodiment, the outer diameter of the outer frame is D, the amplitude of the first arc segment along the direction from the inner side to the outer side is S1, and the amplitude of the second arc segment along the direction from the outer side to the inner side is S2.

[0009] The value of S1 satisfies: 0.008D≤S1≤0.016D; and / or the value of S2 satisfies: 0.008D≤S2≤0.016D.

[0010] In one embodiment, the grid bar further includes a third arc-shaped segment connected to the second arc-shaped segment, the third arc-shaped segment being convex from the inner side toward the outer side.

[0011] In one embodiment, the number of the second arc segment and the third arc segment is multiple, and the multiple second arc segments and the multiple third arc segments are arranged alternately along the extension direction of the grid strip.

[0012] In one embodiment, the grid strips are arranged at an angle to the radial direction of the mesh cover, and the angle is not less than 5° and not greater than 40°.

[0013] And / or, the grid bar has a first surface on its inner side, the first surface having a torsion angle about the axis of the grid bar, the torsion angle being no greater than 20°.

[0014] In one embodiment, the mesh cover further includes annular ribs that connect multiple of the grid bars and are located between the inner frame and the outer frame;

[0015] On the same circumference of the annular rib, there are at least two points on the annular rib that are not equidistant from the inner frame.

[0016] In one embodiment, the annular rib includes an adjacent first rib segment and a second rib segment, wherein at least one of the first rib segment and the second rib segment is an arc-shaped segment.

[0017] In one embodiment, both the first rib segment and the second rib segment are arc-shaped segments, with the first rib segment protruding towards the side where the outer frame is located and the second rib segment protruding towards the side where the inner frame is located;

[0018] Wherein, in the radial direction of the mesh cover, the amplitude of the first rib segment is S3, and the amplitude of the second rib segment is S4;

[0019] The value of S3 satisfies: 0.035D≤S3≤0.117D; and / or the value of S4 satisfies: 0.035D≤S4≤0.117D.

[0020] In one embodiment, the annular rib includes multiple first rib segments and multiple second rib segments, which are arranged alternately along the circumference of the annular rib.

[0021] This utility model also proposes an air conditioner that includes the mesh cover described in any of the foregoing embodiments.

[0022] In one embodiment, the air conditioner includes an outdoor unit, which comprises:

[0023] The panel has an air outlet; and

[0024] In any of the aforementioned embodiments, the mesh cover is disposed on the panel at the position corresponding to the air outlet.

[0025] The technical solution of this utility model improves the grid strip by having adjacent first and second arc-shaped segments. The first arc-shaped segment is connected to the outer frame and protrudes from the inside to the outside, increasing the distance between the blade tip and the mesh cover. This improves the matching degree between the air volume and the air outlet spacing at the blade tip, thereby reducing the noise caused by flow separation and high turbulent kinetic energy at the blade tip. Secondly, the relative design of the first arc-shaped segment protruding outward and the second arc-shaped segment protruding inward helps the airflow to be distributed more naturally when passing through the mesh cover, avoiding noise caused by concentrated airflow impacting the mesh cover. In addition, by reasonably distributing the amplitude of the arc-shaped segments, the interference between the blade and the airflow can be reduced, further reducing noise. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of an embodiment of the mesh cover provided by this utility model;

[0028] Figure 2 for Figure 1 One side view in the middle;

[0029] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0030] Figure 4 for Figure 1 Another view;

[0031] Figure 5 for Figure 4 A sectional view;

[0032] Figure 6 for Figure 1 A schematic diagram of the structure of one embodiment of the central grid bar;

[0033] Figure 7 This is a structural schematic diagram of an embodiment of the air conditioner provided by this utility model.

[0034] Explanation of icon numbers:

[0035] 10. Mesh cover; 11. Inner side; 12. Outer side;

[0036] 100, Inner frame; 200, Outer frame; 300, Grille; 310, First arc segment; 320, Second arc segment; 330, Third arc segment; 400, Circular rib; 410, First rib segment; 420, Second rib segment;

[0037] 1. Air conditioner; 20. Panel; 30. Motor bracket.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] This utility model proposes a mesh cover for use in air conditioners, designed to reduce noise. The air conditioner can be a window-type, split-type, or floor-standing unit, etc. If the air conditioner is a window-type, the mesh cover is located on the outdoor side of the unit; if the air conditioner is a split-type, the mesh cover is located on the outdoor unit. Alternatively, in other embodiments, the mesh cover can also be installed on a fan or blower.

[0043] For ease of explanation, the following description will take a split-type air conditioner as an example. The mesh cover is located at the air outlet of the outdoor unit of the split-type air conditioner, and an axial flow fan is used in conjunction with the mesh cover. That is to say, the mesh cover is located on the air outlet side of the axial flow fan.

[0044] Please see Figures 1 to 7 In one embodiment of this utility model, the mesh cover 10 has an inner side 11 and an outer side 12. The mesh cover 10 includes an inner frame 100, an outer frame 200, and multiple grid strips 300. The outer frame 200 is arranged around the outer periphery of the inner frame 100. The grid strips 300 are connected to the inner frame 100 and the outer frame 200. The multiple grid strips 300 are distributed at intervals along the circumference of the inner frame 100. The grid strips 300 have adjacent first arc-shaped segments 310 and second arc-shaped segments. The first arc-shaped segment 310 is connected to the outer frame 200. The first arc-shaped segment 310 protrudes from the inner side 11 toward the outer side 12, and the second arc-shaped segment protrudes from the outer side 12 toward the inner side 11.

[0045] The mesh cover 10 has an inner side 11 and an outer side 12. This means that with the mesh cover 10 as the dividing point, the inner side 11 of the mesh cover 10 usually refers to the side closer to the outdoor unit of the air conditioner, while the outer side 12 of the mesh cover 10 refers to the side of the mesh cover 10 away from the outdoor unit of the air conditioner.

[0046] Regarding the outer frame 200 and the inner frame 100, the outer frame 200 is the main supporting structure of the mesh cover 10. It is usually installed on the outside of the outdoor unit of the air conditioner and fixed together with the air conditioner body. The outer frame 200 provides stability and overall support through its robust design. The inner frame 100 is usually located within the annular space enclosed by the outer frame 200; that is, the outer frame 200 is arranged around the outer periphery of the inner frame 100. The inner frame 100 and the outer frame 200 have various shapes and structures. The outer frame 200 is usually cylindrical, while the inner frame 100 is usually plate-shaped. The cross-sectional shapes of the outer frame 200 and the inner frame 200 are varied, for example, they can be regular shapes such as circular rings, elliptical rings, and square rings, or they can be other irregular shapes. The shapes of the inner frame 100 and the outer frame 200 can be the same or different.

[0047] Regarding the multiple grid strips 300, the grid strips 300 connect the inner frame 100 and the outer frame 200, and the multiple grid strips 300 are distributed circumferentially around the inner frame 100. The grid strips 300 connect the inner frame 100 and the outer frame 200, serving a supporting and fixing function. The circumferential distribution of the grid strips 300 around the inner frame 100 not only provides uniform support and protection, but also ensures balanced airflow.

[0048] Since the axial flow impeller is used in conjunction with the screen 10, and the impeller is a high-speed rotating component, the linear velocity at the top of the impeller is the highest when it rotates around the axis of rotation, which can also generate a relatively high flow rate. Therefore, the location of the highest airflow velocity in the axial flow impeller is usually at the tip of the blades. However, in order to avoid large deformation and impeller interference caused by external forces on the screen 10, the screen 10 is usually arched outward 12. This results in the shortest distance between the tip of the blade and the screen 10, where the airflow velocity is the highest. This leads to a mismatch between the airflow volume and the airflow spacing. At this time, the high-speed rotating airflow will form strong flow separation under the obstruction of the grid 300, with high turbulent kinetic energy and a relatively obvious noise level.

[0049] To reduce the noticeable noise level caused by the mismatch between the airflow volume and the airflow spacing, in this embodiment, as... Figure 5 As shown, the grid 300 has adjacent first arc-shaped segments 310 and second arc-shaped segments. The first arc-shaped segment 310 is connected to the outer frame 200. The first arc-shaped segment 310 protrudes from the inner side 11 towards the outer side 12, and the second arc-shaped segment protrudes from the outer side 12 towards the inner side 11. In this embodiment, the first arc-shaped segment 310 is connected to the outer frame 200, and the first arc-shaped segment 310 protrudes from the inner side 11 towards the outer side 12, increasing the distance between the blade tip and the mesh cover 10. This improves the matching degree between the airflow and the airflow spacing at the blade tip, thereby reducing the noise caused by flow separation and high turbulent kinetic energy at the blade tip. Furthermore, the relative design of the first arc-shaped segment 310 protruding towards the outer side 12 and the second arc-shaped segment protruding towards the inner side 11 helps the airflow to be distributed more naturally when passing through the mesh cover 10, avoiding noise caused by concentrated airflow impacting the mesh cover 10.

[0050] Furthermore, to improve the noise reduction effect, the outer diameter of the outer frame 200 is D, and the amplitude of the first arc segment 310 along the direction from the inner side to the outer side is S1, wherein the value of S1 satisfies: 0.008D ≤ S1 ≤ 0.016D. In another embodiment, the amplitude of the second arc segment 320 along the direction from the outer side to the inner side is S2, wherein the value of S2 satisfies: 0.008D ≤ S2 ≤ 0.016D.

[0051] The amplitude of the first arc segment 310 and the amplitude of the second arc segment 320 refer to the degree of curvature or the magnitude of the arc segment, which can generally be used to describe the curvature of the arc segment. Specifically, the amplitude represents the maximum deviation distance of the arc segment relative to its starting and ending points, that is, the degree to which it bends outward or inward. The larger the amplitude, the more obvious the curvature of the arc segment. For example, the values ​​of S1 and S2 include, but are not limited to, 0.008D, 0.009D, 0.010D, 0.011D, 0.012D, 0.013D, 0.014D, 0.015D, or 0.016D.

[0052] Experiments showed that the amplitude S1 of the first arc segment 310 and the amplitude S2 of the second arc segment 320 were set within this range, allowing the grid 300 to provide some guidance for the airflow without causing excessive resistance. Excessive air resistance would require the impeller to rotate at a higher speed to propel the air. The airflow, when passing through the grid 300, can flow smoothly along the preset arc, thus reducing sudden changes in airflow direction and turbulence, thereby lowering the turbulent noise generated when the airflow passes through the mesh cover 10.

[0053] The technical solution of this utility model improves the grid bar 300, which has adjacent first arc-shaped segments 310 and second arc-shaped segments 320. The first arc-shaped segment 310 is connected to the outer frame 200 and protrudes from the inner side 11 to the outer side 12, increasing the distance between the blade tip and the mesh cover 10. This improves the matching degree between the air volume and the air outlet spacing at the blade tip, thereby reducing the noise caused by flow separation and high turbulent kinetic energy at the blade tip. Secondly, the relative design of the first arc-shaped segment 310 protruding outward 12 and the second arc-shaped segment protruding inward 11 helps the airflow to be distributed more naturally when passing through the mesh cover 10, avoiding noise caused by concentrated airflow impacting the mesh cover 10. In addition, by reasonably distributing the amplitude of the arc-shaped segments, the interference between the blade and the airflow can be reduced, further reducing noise.

[0054] In one embodiment, the grid 300 further includes a third arc segment 330, which is connected to the second arc segment 320, and the third arc segment 330 is provided to protrude from the inner side 11 toward the outer side 12.

[0055] Furthermore, the second and third arc-shaped segments are multiple, and these multiple segments are arranged alternately along the extension direction of the grid 300. In this example, the design of multiple alternating segments also enhances the overall structural stability of the grid 300. By dispersing stress and load, it helps resist external impacts or vibrations, ensuring the grid 300 remains stable during long-term use and extending the service life of the mesh cover 10.

[0056] In another embodiment, to reduce the flow resistance of the grid bars 300 to the airflow, the grid bars 300 are arranged at an angle to the radial direction of the mesh cover 10, such that... Figure 3 As shown by α, the included angle is not less than 5° and not greater than 40°.

[0057] Here, the included angle can be understood as the deflection angle of the grid bar 300. In practical applications, the deflection direction of this angle is consistent with the rotation direction of the wind turbine. When the deflection angle of the grid bar 300 is consistent with the rotation direction of the wind turbine, the airflow can pass through the grid bar 300 more smoothly. This reduces the collision and resistance of the airflow when passing through the grid bar 300, thereby improving the airflow efficiency. The separation phenomenon of airflow on the surface of the grid bar 300 can be suppressed, thereby reducing the noise generated by the airflow passing through this area.

[0058] For example, when the wind turbine rotates clockwise, the grid bar 300 deflects clockwise by α. This deflection can be understood as the grid bar 300 extending approximately radially along the mesh cover 10, compared to the general embodiment. At this time, the connection point between the grid bar 300 and the inner frame 100 remains stationary, while the connection point between the grid bar 300 and the outer frame 200 moves clockwise. After the movement is completed, the extension direction of the grid bar 300 forms an angle with the radial extension direction of the mesh cover 10. The value of this angle α is not less than 5° and not greater than 40°. The included angle α can take values ​​including but not limited to 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, or 40°.

[0059] In another embodiment, in order to achieve the flow guiding effect of the stationary blade of the grid bar 300, the grid bar 300 is provided with a first surface extending along the length direction of the grid bar 300 on its inner side. The first surface has a torsion angle about the axis of the grid bar 300, and the value of the torsion angle is not greater than 20°.

[0060] In this embodiment, taking the welding forming method of the inner frame 100, outer frame 200, and grid strip 300 as an example, the method to achieve the above solution is as follows: using a rectangular grid strip as raw material, the raw material grid strip is twisted clockwise / counterclockwise along its axis by a certain angle (i.e., the grid strip 300 has two opposite ends, one end is twisted clockwise and the other end is twisted counterclockwise). This angle is the torsion angle defined above. Then, the first arc segment 310, the second arc segment 320, and the third arc segment 330 are punched out by stamping or other operations. Finally, the grid strip 300 is connected and fixed to the inner frame 100 and the outer frame 200. The value of the torsion angle includes, but is not limited to, 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, or 20°.

[0061] In a preferred embodiment, please refer to Figure 2 and Figure 3 The mesh cover 10 also includes annular ribs 400, which connect multiple grid bars 300 and are located between the inner frame 100 and the outer frame 200. On the same circumference of the annular rib 400, there are at least two points where the distances from the inner frame 100 are not equal. By connecting multiple grid bars 300 together, the annular ribs 400 increase the overall strength of the mesh cover 10. They provide additional support for the grid bars 300, preventing deformation or damage under prolonged use or external forces, thus improving the durability of the mesh cover 10. Secondly, the mesh cover 10 may be subjected to airflow or external impacts during use; the annular ribs 400 can distribute these stresses throughout the entire mesh cover 10, preventing stress concentration in a single area and reducing the risk of localized deformation. In addition, by setting at least two points on the same circumference, specifically three, four, five, etc., and making their distances from the inner frame 100 unequal, the flow field changes of the airflow can be adjusted to a certain extent, avoiding the generation of concentrated airflow and optimizing the airflow performance.

[0062] Based on the previous embodiment, the annular rib 400 includes adjacent first rib segment 410 and second rib segment 420, wherein at least one of the first rib segment 410 and the second rib segment 420 is an arc-shaped segment. Specifically, one rib segment may be an arc-shaped segment and the second rib segment 420 may be a straight segment, or the first rib segment 410 may be a straight segment and the second rib segment 420 may be an arc-shaped segment, or both the first rib segment and the second rib segment 420 may be arc-shaped segments.

[0063] Thus, in this embodiment, the arc-shaped rib segments can better disperse and withstand external impacts and pressures. Secondly, the arc-shaped rib segments improve the bending strength of the ribs, making the mesh cover 10 more uniformly stressed and preventing deformation or damage caused by structural weaknesses. In addition, the arc-shaped rib segments can effectively reduce the noise generated when airflow passes through the mesh cover 10. The arc design allows the airflow to flow along a smoother path, reducing airflow turbulence and noise generation.

[0064] In another embodiment, both the first rib segment 410 and the second rib segment 420 are arc-shaped segments. The first rib segment 410 protrudes towards the side where the outer frame 200 is located, and the second rib segment 420 protrudes towards the side where the inner frame 100 is located. In the radial direction of the mesh cover 10, the amplitude of the first rib segment 410 is S3, and the amplitude of the second rib segment 420 is S4. The value of S3 satisfies: 0.035D≤S3≤0.117D; and / or, the value of S4 satisfies: 0.035D≤S4≤0.117D.

[0065] The amplitudes of the first reinforcing bar segment 410 and the second reinforcing bar segment 420 are based on the original annular reinforcing bar 400. In this embodiment, the amplitude of the first reinforcing bar segment 410 represents the maximum deviation distance of the first reinforcing bar segment 410 relative to the original annular reinforcing bar 400, and the amplitude of the second reinforcing bar segment 420 represents the maximum deviation distance of the second reinforcing bar segment 420 relative to the original annular reinforcing bar 400. The parameters of S3 and S4 are as follows: Figure 3 For example, the values ​​of S3 and S4 include, but are not limited to, 0.035D, 0.040D, 0.045D, 0.050D, 0.055D, 0.060D, 0.065D, 0.070D, 0.075D, 0.080D, 0.085D, 0.090D, 0.095D, 0.100D, 0.105D, 0.110D, 0.115D, or 0.117D.

[0066] In this embodiment, by adjusting the amplitudes of the first rib segment 410 and the second rib segment 420, the airflow path can be better controlled and adjusted, resulting in more uniform airflow and improved ventilation. Experiments have shown that setting the amplitude of the first rib segment 410 to S3 and the amplitude of the second rib segment 420 to S4 within this range provides the mesh cover 10 with good structural strength, balancing functionality and aesthetics.

[0067] Based on the above embodiments, the annular rib 400 includes multiple first rib segments 410 and multiple second rib segments 420, which are arranged alternately along the circumference of the annular rib 400. In an exemplary embodiment, the annular rib 400 extends in a wave-like manner along its circumference; more specifically, the annular rib 400 is arranged in a sinusoidal wave shape. The wave-like design of the annular rib 400 helps to disperse and reduce noise generated when airflow passes through the air guide strip, because the wave-like structure can effectively break the unidirectionality of airflow, reducing the impact force when airflow hits the air guide strip, thereby reducing noise. The wave-shaped air guide strip, through its tortuous structural form, can improve the structural strength and stability of the overall mesh cover 10. This design can better disperse external forces, reduce single-point stress, and prevent deformation and damage. The wave-like design can also increase the aesthetics of the mesh cover 10, making the appearance of the air conditioner 1 more modern and design-oriented.

[0068] This utility model also proposes an air conditioner 1, which includes a mesh cover 10 of any of the foregoing embodiments. The specific structure of the mesh cover 10 is as described in the above embodiments. Since this air conditioner 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0069] The air conditioner 1 can be a window air conditioner 1, a split air conditioner 1, or a cabinet air conditioner 1, etc. If the air conditioner 1 is a window air conditioner 1, the mesh cover 10 is located on the outdoor side 12 of the window air conditioner 1; if the air conditioner 1 is a split air conditioner 1, the mesh cover 10 is located on the outdoor unit of the split air conditioner 1.

[0070] In one embodiment, please refer to Figure 7 The air conditioner 1 includes an outdoor unit, which includes a panel 20 and a mesh cover 10. The panel 20 is provided with an air outlet; the mesh cover 10 is provided on the panel 20 at a position corresponding to the air outlet.

[0071] Furthermore, the outdoor unit of the air conditioner also includes an axial flow fan, a drive motor, and a motor bracket 30. The motor bracket 30 is integrally formed with the panel 20. The drive motor is installed in the motor bracket 30, and the axial flow fan is installed in the drive motor. The drive motor drives the axial flow fan.

[0072] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A mesh cover, the mesh cover having an inner side and an outer side, characterized in that, include: Inner frame; The outer frame is arranged around the outer periphery of the inner frame; as well as Multiple grid bars are connected to the inner frame and the outer frame, and the multiple grid bars are distributed circumferentially at intervals along the inner frame; each grid bar has an adjacent first arc segment and a second arc segment, the first arc segment is connected to the outer frame, the first arc segment protrudes from the inner side to the outer side, and the second arc segment protrudes from the outer side to the inner side.

2. The mesh cover as described in claim 1, characterized in that, The outer diameter of the outer frame is D. Along the direction from the inner side to the outer side, the amplitude of the first arc segment is S1, and along the direction from the outer side to the inner side, the amplitude of the second arc segment is S2. The value of S1 satisfies: 0.008D≤S1≤0.016D; and / or the value of S2 satisfies: 0.008D≤S2≤0.016D.

3. The mesh cover as described in claim 1, characterized in that, The grid also includes a third arc-shaped segment, which is connected to the second arc-shaped segment, and the third arc-shaped segment is convex from the inner side toward the outer side.

4. The mesh cover as described in claim 3, characterized in that, The number of the second arc segment and the third arc segment is multiple, and the multiple second arc segments and the multiple third arc segments are arranged alternately along the extension direction of the grid strip.

5. The mesh cover as described in any one of claims 1 to 4, characterized in that, The grid bars are set at an angle to the radial direction of the mesh cover, and the value of the angle is not less than 5° and not greater than 40°; And / or, the grid bar has a first surface on its inner side, the first surface having a torsion angle about the axis of the grid bar, the torsion angle being no greater than 20°.

6. The mesh cover as described in claim 5, characterized in that, The mesh cover also includes annular ribs, which connect multiple of the grid bars and are located between the inner frame and the outer frame; On the same circumference of the annular rib, there are at least two points on the annular rib that are not equidistant from the inner frame.

7. The mesh cover as described in claim 6, characterized in that, The annular rib includes an adjacent first rib segment and a second rib segment, at least one of which is an arc-shaped segment.

8. The mesh cover as described in claim 7, characterized in that, Both the first rib segment and the second rib segment are arc-shaped segments. The first rib segment protrudes towards the side where the outer frame is located, and the second rib segment protrudes towards the side where the inner frame is located. Wherein, in the radial direction of the mesh cover, the amplitude of the first rib segment is S3, and the amplitude of the second rib segment is S4; The value of S3 satisfies: 0.035D≤S3≤0.117D; and / or the value of S4 satisfies: 0.035D≤S4≤0.117D.

9. The mesh cover as described in claim 8, characterized in that, The annular rib includes multiple first rib segments and multiple second rib segments, which are arranged alternately along the circumference of the annular rib.

10. An air conditioner, characterized in that, Includes the mesh cover as described in any one of claims 1 to 9.

11. The air conditioner as described in claim 10, characterized in that, The air conditioner includes an outdoor unit, and the outdoor unit includes: The panel is provided with an air outlet; the mesh cover is installed on the panel corresponding to the position of the air outlet.

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