Grating structure and air supply device

Abstract

The application relates to a kind of grid structure and air supply device.The grid structure includes first ring wall, second ring wall, third ring wall, multiple first spokes and multiple second spokes.The second ring wall is arranged around the first ring wall and spaced apart from the first ring wall.The multiple first spokes are arranged radially around the first ring wall, one end of each first spoke is connected to the first ring wall, and the other end is connected to the second ring wall.The third ring wall is arranged around the second ring wall and spaced apart from the second ring wall.The multiple second spokes are arranged radially around the second ring wall, one end of each second spoke is connected to the second ring wall, and the other end is connected to the third ring wall.The first spokes and the second spokes are staggered in the direction of the third ring wall from the first ring wall, and the thickness of the first spokes is less than the thickness of the second spokes along the circumference of the first ring wall.The grid structure provided by the application can increase the ventilation area, improve the air intake of the grid structure, and reduce the material usage when manufacturing the first spokes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a grille structure and an air supply device. BACKGROUND

[0002] The air supply device is a commonly used electric appliance. The air supply device is usually provided with a fan blade inside, and air flow is formed by the high-speed rotating fan blade to realize air supply. In order to protect the fan blade and prevent it from interfering with other components, a grille structure is usually installed on the peripheral side of the fan blade, that is, the air inlet of the air supply device is provided with a grille structure.

[0003] In order to improve the strength of the grille structure, the thickness of the spokes of the grille structure is usually set to be relatively thick. In this way, the spokes will block the ventilation area of the grille structure, resulting in a decrease in the ventilation area of the grille structure. SUMMARY

[0004] The present application aims at the problem of small ventilation area of the existing grille structure, and proposes a grille structure and an air supply device. The grille structure and the air supply device have the technical effect of expanding the ventilation area of the grille structure and thus increasing the air inlet amount.

[0005] A grille structure comprises:

[0006] a first ring wall;

[0007] a second ring wall, which is arranged around the first ring wall and is spaced apart from the first ring wall;

[0008] a plurality of first spokes, which are arranged radially around the first ring wall, one end of each first spoke is connected to the first ring wall, and the other end is connected to the second ring wall;

[0009] a third ring wall, which is arranged around the second ring wall and is spaced apart from the second ring wall;

[0010] a plurality of second spokes, which are arranged radially around the second ring wall, one end of each second spoke is connected to the second ring wall, and the other end is connected to the third ring wall;

[0011] Wherein, along the direction of the third ring wall from the first ring wall, the first spokes and the second spokes are staggered, and along the circumferential direction of the first ring wall, the thickness of the first spokes is smaller than the thickness of the second spokes.

[0012] In one of the embodiments, each first spoke is recessed inwardly along the direction perpendicular to the plane where the first ring wall is located, and all the first spokes are recessed toward one side and jointly form a recessed space.

[0013] In one of the embodiments, the connection between the first spoke and the second spoke forms an angle with the axis direction of the first ring wall, and the angle ranges from 0° to 40°.

[0014] In one of the embodiments, the length from the connection between the first spoke and the first ring wall to the connection between the first spoke and the second spoke along the direction of the third ring wall from the first ring wall is d, wherein 10mm≤d≤30mm.

[0015] In one of the embodiments, the thickness of the first spoke along the circumferential direction of the first ring wall is greater than or equal to 2mm and less than or equal to 2.2mm.

[0016] In one of the embodiments, the grid structure further comprises a fourth ring wall, which is located between the second ring wall and the third ring wall and is arranged around the second ring wall and spaced apart from the second ring wall, and the fourth ring wall is also spaced apart from the third ring wall.

[0017] In one of the embodiments, a first area is formed between the second ring wall and the fourth ring wall, and a second area is formed between the fourth ring wall and the third ring wall; the second spoke comprises a first segment and a second segment connected in sequence, the first segment is located in the first area, and the second segment is located in the second area; the thickness of the first segment along the circumferential direction of the fourth ring wall is less than the thickness of the second segment.

[0018] In one of the embodiments, the thickness of the first segment along the circumferential direction of the fourth ring wall is greater than or equal to 2.2mm and less than or equal to 2.5mm, and the thickness of the second segment is greater than 2.5mm and less than or equal to 3mm.

[0019] In one of the embodiments, the distance between two adjacent first spokes on the side close to the first ring wall is L1, and the distance between two adjacent first spokes on the side away from the first ring wall is L2, wherein L1<L2.

[0020] In one of the embodiments, the range of L1 is 2mm≤L1≤5.5mm, and the range of L2 is 6mm≤L2≤8mm.

[0021] In one of the embodiments, the distance between two adjacent second spokes on the side close to the second ring wall is L3, and the distance between two adjacent second spokes on the side away from the second ring wall is L4, wherein L3<L4.

[0022] In one of the embodiments, the range of L3 is 2mm≤L3≤5.5mm, and the range of L2 is 6mm≤L2≤8mm.

[0023] The application also provides an air supply device. The air supply device comprises a motor assembly, an air outlet piece and the grille structure as described above, the air outlet piece and the motor assembly are respectively arranged on two sides of the grille structure, and an air inlet is formed at the grille structure.

[0024] Compared with the prior art, the grille structure and the air supply device set the thickness of the first spoke to be less than the thickness of the second spoke, which can increase the ventilation area of the grille structure, that is, increase the air inlet area of the air inlet surface, thereby improving the air intake of the grille structure. In addition, the amount of material used in manufacturing the first spoke can be reduced, thereby reducing the production cost of the grille structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structural schematic diagram of the grille structure provided for some embodiments of the application is shown in the figure;

[0026] Figure 2 The sectional view of the air supply device provided for some embodiments of the application is shown in the figure;

[0027] Figure 3 The sectional view of the air supply device provided for some embodiments of the application when impacted by the impact hammer is shown in the figure;

[0028] Figure 4 The exploded view of the air supply device provided for some embodiments of the application is shown in the figure.

[0029] Explanation of reference signs:

[0030] 10, first ring wall; 20, second ring wall; 30, first spoke; 40, third ring wall; 50, second spoke; 51, first section; 52, second section; 60, fourth ring wall; 100, grille structure; 200, motor assembly; 300, air outlet piece; 400, impact hammer; 1000, air supply device. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below in combination with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the application, so the application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "length", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0036] It is to be noted that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In addition, the term "connected" as used herein means the element that is connected can be either directly connected to the other element or can be connected through intervening elements. As used herein, the term "vertical", "horizontal", "up", "down", "left", "right", and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0037] Reference will now be made to Figure 1 Some embodiments of the present application provide a grille structure 100. The grille structure 100 comprises a first ring wall 10, a second ring wall 20, a third ring wall 40, a plurality of first spokes 30 and a plurality of second spokes 50. The second ring wall 20 is disposed around the first ring wall 10 and spaced apart from the first ring wall 10. The plurality of first spokes 30 are disposed around the first ring wall 10 and radially. One end of each first spoke 30 is connected to the first ring wall 10 and the other end is connected to the second ring wall 20. The third ring wall 40 is disposed around the second ring wall 20 and spaced apart from the second ring wall 20. The plurality of second spokes 50 are disposed around the second ring wall 20 and radially. One end of each second spoke 50 is connected to the second ring wall 20 and the other end is connected to the third ring wall 40.

[0038] In which, from the first ring wall 10 along the direction of the third ring wall 40, the first spokes 30 and the second spokes 50 are arranged alternately. It can be understood that the first spokes 30 and the second spokes 50 extend along two non-intersecting straight lines respectively. In addition, along the circumferential direction of the first ring wall 10, the thickness a of the first spokes 30 can be less than the thickness b of the second spokes 50.

[0039] Reference will now be made to Figure 1 and Figure 2 The example shown above, when the grille structure 100 is applied to the air supply device 1000 and used as an air inlet.

[0040] When the air outside passes through the grille structure 100, in fact, all the air enters the air supply device 1000 from the plane in which the first ring wall 10 is located, that is, the plane parallel to the plane in which the first ring wall 10 is located is the air inlet plane. Based on the plurality of first spokes 30 disposed between the first ring wall 10 and the second ring wall 20, and the plurality of second spokes 50 disposed between the second ring wall 20 and the third ring wall 40, therefore, the spokes arranged can block part of the air inlet plane, thereby reducing the ventilation area of the grille structure 100, resulting in a decrease in the amount of air passing through the grille structure 100.

[0041] Because the thickness a of the first spokes 30 is less than the thickness b of the second spokes 50, the area of the first spokes 30 blocks the air inlet surface is less than the area of the second spokes 50 blocks the air inlet surface. It can also be understood that, relative to the thickness a of the first spokes 30 and the thickness b of the second spokes 50 are set to be equal, the thickness a of the first spokes 30 is set to be less than the thickness b of the second spokes 50, can increase the ventilation area of the grille structure 100, that is, increase the air inlet area of the air inlet surface, thereby improving the air intake of the grille structure 100. In addition, because the thickness a of the first spokes 30 is less than the thickness b of the second spokes 50, it can also reduce the amount of material used when making the first spokes 30, thereby reducing the production cost of the grille structure 100.

[0042] In order to improve the impact resistance of the grille structure 100 without affecting the air intake of the grille structure 100, the components of the grille structure 100 can be further optimized.

[0043] In some embodiments, please refer to Figure 1 and Figure 2 Each first spoke 30 is recessed inwardly in a direction perpendicular to the plane of the first ring wall 10, and all the first spokes 30 are recessed toward the same side and can collectively form a recessed space.

[0044] In order to facilitate the description, the grille structure 100 described above is applied to a fan (such as a fan) as an example for description.

[0045] As shown in Figure 2 , the grille structure 100 can be connected with the motor cover of the fan, and it can be understood that the grille structure 100 is arranged close to the motor cover. When the motor rotates, the air outside can enter the fan through the grille structure 100. The grille structure 100 can be used as an air inlet. Because the connection between the first spokes 30 and the second spokes 50 is protruding relative to the rest of the first spokes 30, and the plurality of first spokes 30 can collectively form a recessed space, the first spokes 30 actually form a recessed area with the motor cover.

[0046] Before being shipped, fans and the like will usually be subjected to impact testing, that is, the impact resistance of each area of the fan is tested. As Figure 3As shown, in some embodiments, the impact test can be performed by using the impact hammer 400. When the impact hammer 400 acts on the grid structure 100, because the recessed area is formed between the grid structure 100 and the motor housing, the impact hammer 400 only contacts a part of the first spoke 30, i.e. a part of the first spoke 30 located in the recessed area does not contact the impact hammer 400. Compared with the case that the entire first spoke 30 contacts the impact hammer 400, the above arrangement can reduce the impact force received by the first spoke 30, protect the first spoke 30, and reduce the probability that the first spoke 30 is affected by the excessive impact force.

[0047] Further, as shown, Figure 2 In some embodiments, the connection between the first spoke 30 and the second spoke 50 forms an angle a with the axis direction of the first ring wall 10. The angle a can be equivalent to the angle a formed between the connection between the first spoke 30 and the second spoke 50 and the motor housing. The angle a can range from 0° to 40°.

[0048] For example, when the angle a formed between the connection between the first spoke 30 and the second spoke 50 and the motor housing is 39°, the impact test is performed on the fan. When the impact hammer 400 acts on the recessed area of the grid structure 100, because the angle a is formed between the spoke and the motor housing, and the structure of the impact hammer 400 itself, part of the impact hammer 400 can be stuck between the grid structure 100 and the motor housing. In this way, the impact hammer 400 cannot directly act on the area of the first spoke 30 close to the first ring wall 10, thereby reducing the impact force received by the first spoke 30 and improving the connection strength between the first spoke 30 and the first ring wall 10.

[0049] Further, as shown, Figure 2 In some embodiments, the length from the connection between the first spoke 30 and the first ring wall 10 to the connection between the first spoke 30 and the second spoke 50 in the direction of the third ring wall 40 is d. The length can be understood as the length of the bottom wall of the recessed area in the grid structure 100. Under other conditions, as d increases, the volume of the recessed area can also increase. The length d can range from 10 mm to 30 mm.

[0050] In this way, the volume of the recessed area of the grid structure 100 can be adjusted according to the specific size of the motor housing used with the grid structure 100, so that the strength of the recessed area of the grid structure 100 can meet the requirements.

[0051] In order to improve the ventilation area of the grid structure 100 without affecting the connection strength between the parts of the grid structure 100, the first spoke 30 and the second spoke 50 can be further improved.

[0052] For example, in Figure 1 In the example shown, along the circumference of the first ring wall 10, the thickness 'a' of the first spoke 30 is greater than or equal to 2 mm and less than or equal to 2.2 mm. This can be understood as the thickness 'a' of the first spoke 30 being greater than or equal to 2 mm and less than or equal to 2.2 mm. This increases the strength of the first spoke 30 itself, reducing the likelihood of breakage due to its thinness when the grid structure 100 is subjected to external impact.

[0053] Secondly, such as Figure 1 As shown, in some embodiments, the grid structure 100 further includes a fourth ring wall 60. The fourth ring wall 60 may be located between the second ring wall 20 and the third ring wall 40, and may be arranged around and spaced apart from the second ring wall 20. The fourth ring wall 60 may also be spaced apart from the third ring wall 40.

[0054] Because the fourth ring wall 60 is located between the second ring wall 20 and the third ring wall 40, a portion of the middle area of ​​the second spoke 50 can connect with the fourth ring wall 60. This increases the connection strength between the second spoke 50 and the second ring wall 20 and the third ring wall 40, reducing the probability of the second spoke 50 breaking when subjected to impact.

[0055] Specifically, such as Figure 1 As shown, in some embodiments, a first region is formed between the second ring wall 20 and the fourth ring wall 60, and a second region is formed between the fourth ring wall 60 and the third ring wall 40. The second spoke 50 includes a first segment 51 and a second segment 52 connected sequentially, with the first segment 51 located in the first region and the second segment 52 located in the second region. Along the circumference of the fourth ring wall 60, the thickness b1 of the first segment 51 is less than the thickness b2 of the second segment 52.

[0056] Instead of setting the thickness b1 of the first segment 51 and the thickness b2 of the second segment 52 to be equal, so that the thickness b1 of the first segment 51 is less than the thickness b2 of the second segment 52, not only can the amount of production material used for the second spoke 50 be reduced, but the obstruction of the air intake surface area of ​​the grille structure 100 by the second spoke 50 can also be reduced, thereby increasing the ventilation area of ​​the grille structure 100.

[0057] For example, such as Figure 1 As shown, along the circumference of the fourth ring wall 60, the thickness b1 of the first segment 51 can be greater than 2 mm and less than 3 mm. The thickness b2 of the second segment 52 can be greater than 2 mm and less than 3.5 mm. In this way, the ventilation area of ​​the grille structure 100 can be increased as much as possible without affecting the impact resistance of the grille structure 100.

[0058] In some embodiments, the grille structure 100 is mainly installed on the outer side of the wind blade and is used to isolate the wind blade from the outside world, so as to protect the wind blade and reduce the probability of interference between the outside object and the wind blade.

[0059] As Figure 1 shown, in some embodiments, on the side close to the first ring wall 10, the distance between two adjacent first spokes 30 can be L1. On the side far from the first ring wall 10, the distance between two adjacent first spokes 30 is L2, where L1 < L2. In other words, the distances between the two ends of two adjacent first spokes 30 are not equal, and the distance on the side close to the second ring wall 20 is greater than the distance on the side close to the first ring wall 10.

[0060] Because the inner diameter of the second ring wall 20 is larger than that of the first ring wall 10, the area enclosed by the second ring wall 20 is larger than the area enclosed by the first ring wall 10. So that the distances between the two ends of two adjacent first spokes 30, the distance on the side close to the second ring wall 20 is greater than the distance on the side close to the first ring wall 10. It can avoid the phenomenon that the user's finger passes through the first spoke 30 and interferes with the wind blade on the basis of尽可能提高格栅结构100的通风面积, and improve the safety performance of the grille structure 100 during use.

[0061] Moreover, the distances between different parts of two adjacent first spokes 30 are not equal, so that all parts of the first spoke 30 can block the user's fingers, etc., to扩大第一辐条作用区域。

[0062] Exemplarily, the range of L1 is 2mm ≤ L1 ≤ 5.5mm, and the range of L2 is 6mm ≤ L2 ≤ 8mm. For example, in Figure 1 the example shown, L1 can be 4.8mm, and L2 can be

[0063] 7mm. In this way, the range of the distance set between two adjacent first spokes 30 is扩大了, so that it can be适用于不同尺寸的格栅结构100。

[0063] In some embodiments, as Figure 1 shown, on the side close to the second ring wall 20, the distance between two adjacent second spokes 50 can be L3. On the side far from the second ring wall 20, the distance between two adjacent second spokes 50 can be

[0064] L4, where L3 < L4. In other words, the distances between the two ends of two adjacent second spokes 50 are not equal, and the distance on the side close to the third ring wall 40 is greater than the distance on the side close to the second ring wall 20. <Because the inner diameter of the third ring wall 40 is larger than the inner diameter of the second ring wall 20, the area enclosed by the third ring wall 40 is larger than the area enclosed by the second ring wall 20. Thus, the distance between the two ends of two adjacent second spokes 50 is larger on the side close to the third ring wall 40 than on the side close to the second ring wall 20. This can maximize the ventilation area of the grille structure 100 while avoiding the user's fingers from passing through the second spokes 50 and interfering with the fan blades, thus improving the safety of the grille structure 100 in use.

[0065] Moreover, the distance between different parts of two adjacent second spokes 50 is not equal, so that all parts of the second spokes 50 can block the user's fingers, etc., to expand the effective area of the second spokes 50.

[0066] For example, L3 is in the range of 2mm≤L3≤5.5mm and L4 is in the range of 6mm≤L2≤8mm. For example, in the example shown in FIG. 6, L3 can be 5.3mm and L4 can be 7.7mm. In this way, the range of the distance between two adjacent first spokes 30 is expanded, which can be applied to grille structures 100 of different sizes. Figure 1

[0067] In addition, referring to FIG. 1, some embodiments of the present application also provide a grille structure 100. The grille structure 100 includes a first ring wall 10, a plurality of first spokes 30, a second ring wall 20, a plurality of second spokes 50, and a third ring wall 40. The first ring wall 10 is arranged on one side of the grille structure 100, and the third ring wall 40 is arranged on the other side of the grille structure 100. The first spokes 30 are arranged between the first ring wall 10 and the second ring wall 20, and the second spokes 50 are arranged between the second ring wall 20 and the third ring wall 40. The first spokes 30 and the second spokes 50 are arranged in a staggered manner. Figure 4 The grille structure 100 can be used in a ventilation device 1000. The ventilation device 1000 includes the grille structure 100, a motor assembly 200, and an air outlet 300. The motor assembly 200 and the air outlet 300 are arranged on two sides of the grille structure 100, respectively, and the grille structure 100 can form an air inlet. The air outlet 300 and the grille structure 100 can be connected by fasteners such as bolts, and the motor assembly 200 and the grille structure 100 can also be connected by fasteners such as bolts.

[0068] When the ventilation device 1000 is in operation, external air enters the ventilation device 1000 from the grille structure 100 under the action of the motor assembly 200 and is discharged from the air outlet 300, thereby achieving ventilation. Because the ventilation device 1000 includes the grille structure 100, the ventilation device 1000 has the functions and advantages of the grille structure 100 provided by the above embodiments, which will not be described here.

[0069] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not conflict, they should be considered within the scope of the present disclosure.

[0070] ​The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A lattice structure, characterized by, The grid structure (100) comprises: a first ring wall (10); a second ring wall (20) arranged around and spaced apart from the first ring wall (10); a plurality of first spokes (30) arranged around the first ring wall (10) in a radial manner, one end of each first spoke (30) being connected to the first ring wall (10) and the other end being connected to the second ring wall (20); each first spoke (30) is recessed inwardly in a direction perpendicular to the plane of the first ring wall (10), and all the first spokes (30) are recessed toward the same side and jointly form a recessed space; a third ring wall (40) arranged around and spaced apart from the second ring wall (20); a plurality of second spokes (50) arranged around the second ring wall (20) in a radial manner, one end of each second spoke (50) being connected to the second ring wall (20) and the other end being connected to the third ring wall (40); wherein, from the first ring wall (10) in the direction of the third ring wall (40), the first spokes (30) and the second spokes (50) are arranged alternately, and along the circumference of the first ring wall (10), the thickness (a) of the first spokes (30) is smaller than the thickness (b) of the second spokes (50); the connection between the first spokes (30) and the second spokes (50) forms an included angle with the axis direction of the first ring wall (10), and the included angle ranges from 0° to 40°.

2. The grid structure of claim 1, wherein, From the first ring wall (10) in the direction of the third ring wall (40), the length from the connection between the first spoke (30) and the first ring wall (10) to the connection between the first spoke (30) and the second spoke (50) is d, wherein 10mm≤d≤30mm.

3. The lattice structure of claim 1, wherein, Along the circumference of the first ring wall (10), the thickness (a) of the first spokes (30) is greater than or equal to 2mm and less than or equal to 2.2mm.

4. The lattice structure of claim 1, wherein, The grid structure (100) further comprises a fourth ring wall (60) located between the second ring wall (20) and the third ring wall (40), arranged around and spaced apart from the second ring wall (20), and also spaced apart from the third ring wall (40).

5. The grid structure of claim 4, wherein, A first area is formed between the second ring wall (20) and the fourth ring wall (60), and a second area is formed between the fourth ring wall (60) and the third ring wall (40); the second spokes (50) comprise a first segment (51) and a second segment (52) connected in sequence, the first segment (51) is located in the first area, and the second segment (52) is located in the second area; along the circumference of the fourth ring wall (60), the thickness (b1) of the first segment (51) is smaller than the thickness (b2) of the second segment (52).

6. The grid structure of claim 5, wherein, Along the circumference of the fourth ring wall (60), the thickness (b1) of the first segment (51) is greater than or equal to 2.2mm and less than or equal to 2.5mm, and the thickness (b2) of the second segment (52) is greater than 2.5mm and less than or equal to 3mm.

7. The lattice structure of claim 1, wherein, The interval between two adjacent first spokes (30) is L1 on the side close to the first ring wall (10), and the interval between two adjacent first spokes (30) is L2 on the side away from the first ring wall (10), wherein L1 < L2.

8. The grid structure of claim 7, wherein, The L1 is in the range of 2mm ≤ L1 ≤ 5.5mm, and the L2 is in the range of 6mm ≤ L2 ≤ 8mm.

9. The lattice structure of claim 1, wherein, The interval between two adjacent second spokes (50) is L3 on the side close to the second ring wall (20), and the interval between two adjacent second spokes (50) is L4 on the side away from the second ring wall (20), wherein L3 < L4.

10. The grid structure of claim 9, wherein, The L3 is in the range of 2mm ≤ L3 ≤ 5.5mm, and the L4 is in the range of 6mm ≤ L2 ≤ 8mm.

11. An air supply device characterized by comprising: The air conditioner comprises a motor assembly (200), an air outlet piece (300), and the grille structure (100) according to any one of claims 1-10, the air outlet piece (300) and the motor assembly (200) are respectively arranged on two sides of the grille structure (100), and an air inlet is formed at the grille structure (100).

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