Mesh Cover Assembly and Air Supply Equipment

Abstract

The present invention provides a grille assembly and a air supply device. The grille assembly includes: a grille which has a windward surface and an air outlet surface, and the grille includes a plurality of first air guiding members; wherein a cross-section is obtained by intercepting the first air guiding member with a plane perpendicular to the extending direction of the first air guiding member, and on the cross-section, the part close to the air outlet surface of the grille is bent relative to the part close to the windward surface of the grille. By arranging that part of the first air guiding members located on the air outlet surface are bent relative to the part of the first air guiding members located on the windward surface, the included angle between the air flow inlet direction and the first air guiding members can be reduced, so that the spiral air flow can be smoothly introduced into the grille, the resistance between the air flow and the first air guiding members can be reduced, the impact of the air flow on the first air guiding members can be weakened, thereby achieving the technical effects of reducing the energy loss of the air flow flowing through the grille, increasing the flow velocity of the air flow flowing out of the grille, reducing the noise generated by the interaction between the grille and the air flow, reducing the energy consumption of the air supply device, and improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air supply equipment, and more specifically, to a grille assembly and an air supply device. Background Art

[0002] In order to make the airflow generated by the fan blow farther, a grille is generally provided when designing the fan to change the direction of the airflow. However, the grille will cause a large resistance to the airflow rotating out from the fan blades. On the one hand, this resistance will cause obvious noise during the operation of the fan, affecting the user experience. On the other hand, it will reduce the flow velocity of the airflow blown out by the fan, affecting the air supply capacity of the fan. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To this end, in the first aspect of the present invention, a grille assembly is proposed;

[0005] In the second aspect of the present invention, an air supply device is proposed.

[0006] In view of this, the grille assembly provided in the first aspect of the present invention is used for an air supply device. The grille assembly includes: a grille having a windward surface and a leeward surface, and the grille includes a plurality of first air guiding members; wherein, a cross-section is obtained by intercepting the first air guiding member with a plane perpendicular to the extending direction of the first air guiding member, and on the cross-section, the part close to the leeward surface of the grille is bent relative to the part close to the windward surface of the grille.

[0007] In the grille assembly provided by the present invention, a grille is included. The grille is arranged on the air supply device in a supporting manner, and the grille includes a windward surface and a leeward surface. Specifically, the grille is arranged at the air outlet of the air supply device, with the windward surface facing the inside of the air supply device and the leeward surface facing the target air outlet direction. During the working process, the airflow generated by the air supply device penetrates into the grille from the windward surface and exits the grille from the leeward surface. Among them, when a fan blade is provided inside the air supply device, the distance that the spiral airflow generated by the rotation of the fan blade can flow is relatively limited. After the spiral airflow flows along the axis direction of the fan blade for a certain length, it will stop flowing continuously in the axis direction. In response to this, the present application provides a first air guiding member on the grille. The first air guiding member can change the direction of the airflow flowing through the grille, specifically rectify the spiral airflow flowing into the grille into a straight airflow, so as to make the airflow more convergent, extend the air supply distance of the fan, and prevent the spiral airflow from dissipating quickly.

[0008] On this basis, the technical solution further defines that a part of the first air guiding member near the air outlet surface of the mesh cover is bent relative to a part of the first air guiding member near the windward surface. Among them, the bending is used to describe the extending direction of the first air guiding member in the direction from the windward surface to the air outlet surface. In the intercepted cross-section, both sides of the bending area on the first air guiding member can be two straight lines with different extending directions, or two arcs with different radian, and of course, it can also be an arc and a straight line.

[0009] During the working process, the spiral air flow flows into the mesh cover from the windward surface of the mesh cover. By setting that a part of the first air guiding member near the air outlet surface of the mesh cover is bent relative to a part of the first air guiding member near the windward surface of the mesh cover, the spiral air flow flowing towards the mesh cover can be straightened after being guided by the bent first air guiding member on the mesh cover, so as to form an air flow extending in a straight line direction, so that the air flow can be blown to a farther area.

[0010] On the other hand, a part of the first air guiding member near the windward surface of the mesh cover can reduce the included angle between the air flow inflow direction and the first air guiding member, so that the spiral air flow can be smoothly introduced into the mesh cover, reduce the resistance between the air flow and the first air guiding member, weaken the impact of the air flow on the first air guiding member, and further achieve the technical effects of improving the matching degree between the mesh cover and the fan, reducing the energy loss of the air flow flowing through the mesh cover, increasing the flow velocity of the air flow flowing out of the mesh cover, reducing the noise generated by the interaction between the mesh cover and the air flow, reducing the energy consumption of the air supply device, and improving the user experience.

[0011] In addition, the above-mentioned mesh cover assembly provided by the present invention may further have the following additional technical features:

[0012] In any of the above technical solutions, in the cross-section, the first air guiding member includes: a first section part, near the air outlet surface; a second section part, connected to the first section part, the second section part is near the windward surface, and the second section part is bent relative to the first section part.

[0013] In this technical solution, the structure of the first air guiding member is specifically defined. The first air guiding member is divided into a first section part and a second section part. The first section part is near the air outlet surface, the second section part is near the windward surface, the first section part is connected to the second section part, and the surface where the first section part and the second section part are connected is smoothly transitioned.

[0014] Specifically, the first section is close to the air outlet surface of the mesh cover, and there is an angle between the air guiding surface of the first section and the flow direction of the introduced air flow. The air flow introduced into the mesh cover changes its flow direction under the guiding action of the first section. Specifically, the first section guides the spiral air flow introduced into the mesh cover into a direct blowing air flow to achieve the convergence of the air flow and extend the flow distance of the air flow. The second section is close to the windward surface of the mesh cover and is used to introduce the air flow into the mesh cover. The spiral air flow flows into the mesh cover at a certain angle. By setting the second section to be bent relative to the first section, the bent second section can be made to match the flow direction of the incoming air flow, so that the spiral air flow can smoothly rotate into the mesh cover, weaken the impact of the air flow on the mesh cover, thereby reducing the pneumatic noise and increasing the air flow velocity at the air outlet of the mesh cover.

[0015] Furthermore, the technical effects of optimizing the structure of the first air guiding member, improving the matching degree between the mesh cover and the fan blades, reducing the working noise of the fan, and enhancing the user experience are achieved.

[0016] Specifically, the surface of the second section is tangent to the flow direction of the incoming air flow, thereby minimizing the air flow resistance and reducing the noise.

[0017] In any of the above technical solutions, an angle is formed at the bent portion between the first section and the second section, and the angle is an obtuse angle.

[0018] In this technical solution, on the intercepted cross-section, an angle is formed at the bent portion between the first section and the second section and the angle is an obtuse angle. By defining the angle between the first section and the second section as an obtuse angle, an approximately smooth transition can be formed between the first section and the second section, avoiding reducing the flow velocity of the air flow due to excessive bending amplitudes of the first section and the second section. Thus, the resistance of the mesh cover to the air flow is reduced, and the air flow passing through the mesh cover can be blown to a farther area.

[0019] In any of the above technical solutions, the first section includes a first line and a second line, and the second section includes a third line and a fourth line; the first line is connected to the third line, and a first angle is formed between the first line and the third line; the second line is connected to the fourth line, and a second angle is formed between the second line and the fourth line; wherein, the angle of the second angle is greater than the angle of the first angle.

[0020] In this technical solution, specific limitations are made on the bending angle between the first section and the second section. The first section includes a first line and a second line, and the first line and the second line are opposite to each other. The second section includes a third line and a fourth line, and the third line and the fourth line are opposite to each other.

[0021] On one side of the first air guiding member, the first line is connected to the third line, and the third line is bent relative to the first line. Specifically, the included angle between the first line and the third line is the first included angle Φ. On the other side of the first air guiding member, the second line is connected to the fourth line, and the fourth line is bent relative to the second line. Specifically, the included angle between the second line and the fourth line is the second included angle ψ.

[0022] The first section is used to change the flow direction of the air flow so that the air flow blows straight out. As a result, the angle of the first section on the mesh cover is relatively fixed. A rectifying channel is defined between multiple first sections, and the air flow is converged after flowing through this rectifying channel. A drainage channel is defined between multiple second sections. By specifically defining the bending angles of the two surfaces responsible for drainage on the second section relative to the first section, the deflection angle of the drainage channel on the mesh cover can be correspondingly adjusted to match the inflow direction of the spiral air flow flowing into the mesh cover. Similar to a threaded connection, the higher the matching degree between the drainage channel and the spiral air flow direction, the smaller the resistance, the lower the air flow energy loss, and the corresponding lower the noise. Furthermore, the technical effects of optimizing the structure of the first air guiding member, reducing the aerodynamic resistance of the first air guiding member, increasing the air flow velocity flowing out of the first air guiding member, reducing the aerodynamic noise of the first air guiding member, and enhancing the user experience are achieved.

[0023] In any of the above technical solutions, the angle of the first included angle is greater than or equal to 160° and less than or equal to 178°; the angle of the second included angle is greater than or equal to 164° and less than or equal to 175°.

[0024] In this technical solution, on one side of the first air guiding member, the first line is connected to the third line, and the third line is bent relative to the first line. Specifically, the first included angle Φ between the first line and the third line is greater than or equal to 160° and less than or equal to 178°, and the corresponding bending angle of the third line relative to the first line is greater than or equal to 2° and less than or equal to 20°. On the other side of the first air guiding member, the second line is connected to the fourth line, and the fourth line is bent relative to the second line. Specifically, the second included angle ψ between the second line and the fourth line is greater than or equal to 164° and less than or equal to 175°, and the corresponding bending angle of the fourth line relative to the second line is greater than or equal to 5° and less than or equal to 16°. In this regard, by limiting the above angle range, the shape of the air duct formed between two adjacent first air guiding members can be optimized to improve the matching degree between the air duct and the spiral air flow flowing into the mesh cover. Specifically, on the one hand, the frictional resistance between the introduced air flow and the second section can be reduced, and on the other hand, it can be ensured that the spiral air flow is rectified into an air flow flowing in a single direction under the action of the first section, and on this basis, the frictional force between the spiral air flow and the first section is reduced as much as possible. Furthermore, the technical effects of optimizing the shape of the first air guiding member, increasing the transmission distance of the air flow passing through the mesh cover, and reducing the aerodynamic noise are achieved. Specifically, when Φ is 173° and ψ is 175°, it can ensure that the air flow before rectification is tangent to the second section, the resistance reaches the minimum, and at the same time ensure that the flow direction of the air flow rectified by the first section is consistent with the direction from the windward surface to the air outlet surface, so as to improve the rectification accuracy and reliability.

[0025] In any of the above technical solutions, the third line extends obliquely away from the fourth line in the direction from the windward surface to the first line; the first line extends obliquely away from the second line in the direction from the third line to the air outlet surface.

[0026] In this technical solution, the relationship between the upper and lower surfaces of the first section and the second section is defined. Specifically, on the second section, the third line extends obliquely away from the fourth line in the direction from the windward surface to the first line. Correspondingly, for the air flow blown into the mesh cover, the air flow gradually flows away from the fourth line under the guiding action of the third line. On the first section, the first line extends obliquely away from the second line in the direction from the third line to the air outlet surface. Correspondingly, for the air flow blown into the mesh cover, the air flow also gradually flows away from the second line under the guiding action of the first line. By defining the above-mentioned inclined extension trends of the first line and the second line, the shape of the first air guiding member can be better matched with the spiral air flow. Specifically, during the working process, the air flow can flow along the first line and the third line, rather than being directly dispersed by the first line and the third line. Furthermore, the technical effects of reducing the resistance of the first air guiding member to the air flow, improving the guiding effect of the first air guiding member, and extending the blowing distance of the air flow are achieved.

[0027] In any of the above technical solutions, the minimum thickness of the first section is greater than the maximum thickness of the second section; and / or, in the direction from the windward surface to the air outlet surface, the thickness of the first air guiding member gradually increases.

[0028] In this technical solution, further limitations are imposed on the shapes of the first section and the second section. Specifically, the direction perpendicular to the extending direction of the first guiding member is the thickness direction. In this regard, the minimum thickness of the first section is greater than the maximum thickness of the second section, and / or the thickness of the first air guiding member gradually increases in the wind direction from the windward surface to the air outlet surface. By defining that the minimum thickness of the first section is greater than the maximum thickness of the second section, the matching degree between the first air guiding member and the spiral air flow can be enhanced, so as to introduce the air flow with less resistance, and at the same time rectify the air flow into a straight air flow and export it with less loss. Furthermore, on the basis of ensuring the air guiding effect, the blowing distance of the air flow is extended. Among them, by defining that the thickness of the first air guiding member gradually increases in the direction from the windward surface to the air outlet surface, a first air guiding member with a smooth transition can be formed, so as to further improve the matching degree between the first air guiding member and the spiral air flow and reduce the air flow loss caused by resistance.

[0029] In any of the above technical solutions, in the cross-section, the ratio of the length of the second section to the length of the first air guiding member is greater than or equal to 0.4 and less than or equal to 0.6.

[0030] In this technical solution, on any cross-section of the first air guiding member and in the direction from the windward surface to the air outlet surface, the total length of the first air guiding member is W0, and the length of the second section is W1, where the ratio of W1 to W0 is greater than or equal to 0.4 and less than or equal to 0.6. By specifically defining the length relationship between the second section and the first air guiding member, the first air guiding member can be made more compatible with the air flow generated by the fan, so as to further reduce the resistance of the first air guiding member to the air flow and reduce the aerodynamic noise. Furthermore, the technical effect of optimizing the structure of the first air guiding member and improving the matching degree between the grille and the fan blade is achieved.

[0031] Specifically, w1 / w0 = 0.495;

[0032] w0 = 11.05 mm, w1 = 5.47 mm.

[0033] In any of the above technical solutions, in the cross-section where the axis of the grille is located and in the axial direction, the ratio of the thickness of the first air guiding member to the maximum thickness of the grille is greater than or equal to 0.22 and less than or equal to 0.32.

[0034] In this technical solution, the shape of the mesh cover matches that of the fan blade, and the axis of the mesh cover coincides with the axis of the fan blade. The mesh cover is intercepted by a plane where the axis of the mesh cover is located. In this cross-section and along the axis direction, the maximum thickness of the mesh cover is h0. By default, the air flow direction is the same as the axis direction, and the length of the first air guiding member in this direction is the aforementioned w0. Specifically, the ratio of w0 to h0 is greater than or equal to 0.22 and less than or equal to 0.23.

[0035] By specifically defining the ratio of the maximum thickness of the mesh cover to the length of the first air guiding member along the air flow direction, the air flow converging ability of the mesh cover can be improved, ensuring that the air flow rectified by the mesh cover can be blown out in a straight line, thereby increasing the flow distance of the air flow blown by the fan, expanding the coverage range of the air flow output by the fan, and achieving the technical effect of improving the user experience.

[0036] Specifically, the ratio of w0 to h0 is 0.27625;

[0037] w0 is 11.05 mm and h0 is 40 mm.

[0038] In the above technical solution, the mesh cover further includes: a positioning portion; a first positioning member, the first positioning member is disposed around the positioning portion, and both ends of the first air guiding member are respectively connected to the positioning portion and the first positioning member.

[0039] In this technical solution, the structure of the mesh cover is specifically defined. The mesh cover includes a positioning portion and a first positioning member, and the positioning portion and the first positioning member jointly position the first air guiding member. Among them, the positioning portion is disposed at the center of the mesh cover, the first positioning member is disposed around the positioning portion, and there is a gap between the first positioning member and the positioning portion. The first air guiding member is disposed in this gap, one end of the first air guiding member is connected to the positioning portion, and the other end of the first air guiding member is connected to the first positioning member, so as to position and install the first air guiding member through the positioning portion and the first positioning member, ensuring that the first air guiding member is installed at the predetermined installation position of the mesh cover.

[0040] At the same time, the first positioning member can support and protect the first air guiding member to a certain extent, avoiding the deviation or breakage of the first air guiding member during the working process. Furthermore, the technical effects of optimizing the structure of the mesh cover and improving the structural stability and reliability of the mesh cover are achieved.

[0041] In any of the above technical solutions, in the direction from the positioning portion to the first positioning member, the first air guiding member is an arc-shaped grille bent towards the direction where the positioning portion is located.

[0042] In this technical solution, specific limitations are imposed on the shape of the first positioning member in the radial direction of the mesh cover. In the direction from the positioning portion to the first positioning member, the first air guiding member bends toward the direction where the positioning portion is located to form an arc-shaped grille. A plurality of arc-shaped grilles form a spiral air duct on the mesh cover. This spiral air duct can better match the spiral air flow generated by the rotation of the fan blades. During the process of the spiral air flow passing through the mesh cover, the spiral air flow enters the mesh cover in a form similar to a threaded connection. Thus, while converging the spiral air flow, the wind resistance of the mesh cover to the spiral air flow is reduced, the air outlet speed of the fan is increased, and the aerodynamic noise generated during the operation of the fan is reduced. Furthermore, the user experience is improved.

[0043] Specifically, the bending direction of the above-mentioned first air guiding member is opposite to the rotation direction of the fan blades in the air supply device adapted to it, so as to ensure that the air flow ejected by the fan blades can enter the air duct enclosed by the first air guiding member, thereby improving the matching degree between the fan blades and the mesh cover.

[0044] In any of the above technical solutions, the mesh cover further includes: a second positioning member located outside the first positioning member; and a second air guiding member, both ends of which are respectively connected to the first positioning member and the second positioning member, and the second air guiding member is configured to diffuse the air flow.

[0045] In this technical solution, the mesh cover includes an inner ring air duct and an outer ring air duct, and the structure of the outer ring air duct is specifically defined. The inner ring air duct is enclosed by the first air guiding member. The first air guiding member is fixed between the positioning portion and the first positioning member, and the first positioning member strengthens the first air guiding member. The outer ring air duct is enclosed by the second air guiding member. The second air guiding member is fixed between the first positioning member and the second positioning member. Specifically, the second positioning member is arranged around the first positioning member, and there is a gap between the second positioning member and the first positioning member. The second air guiding member is arranged in this gap. One end of the second air guiding member is connected to the first positioning member, and the other end of the second air guiding member is connected to the second positioning member, so as to form an annular outer ring air duct on the periphery of the entire air duct.

[0046] The outer ring air duct enclosed by the second air guiding member can disperse the air flow, thereby realizing the diffusion of the air flow. By setting the second air guiding member and constructing the outer ring air duct, the blowing range of the fan at a short distance can be expanded, so as to ensure that the air flow blown by the fan can cover a large area within a relatively short distance. Furthermore, the technical effects of optimizing the fan structure, strengthening the functionality of the fan, and meeting the user's needs are achieved.

[0047] In any of the above technical solutions, both the first positioning member and the second positioning member are ring-shaped; the second air guiding member is a straight plate extending from the first positioning member toward the second positioning member.

[0048] In this technical solution, both the first positioning member and the second positioning member are annular structures, specifically coaxial rings. On this basis, the structure of the second air guiding member is specifically defined. The second air guiding member is a straight plate that extends from the first positioning member towards the second positioning member, and specifically can extend in the radial direction of the two rings. By defining the second air guiding member as a straight plate, a straight hole air duct can be formed by the second air guiding member.

[0049] Specifically, the extending direction of the air duct enclosed by the second air guiding member is consistent with the axial direction of the grille, thereby enhancing the diffusion effect of the outer air duct on the air flow and enhancing the coverage range of the fan at close range.

[0050] The second aspect of the present invention provides an air supply device, which includes: the grille assembly in any of the above technical solutions; a fan blade, which is arranged on the side close to the windward surface.

[0051] In this technical solution, an air supply device including the grille assembly in any of the above technical solutions is defined. Therefore, the air supply device has the advantages of the grille assembly in any of the above technical solutions, can achieve the technical effects in any of the above technical solutions, and for the sake of avoiding repetition, it will not be elaborated here.

[0052] On this basis, a fan blade is also arranged on the air supply device. The fan blade is used to generate an air flow. During the working process, the fan blade rotates, and the rotating fan blade generates a spiral air flow on the windward surface side of the fan blade. The grille and the fan blade are arranged opposite to each other. Specifically, the fan blade is arranged on the windward surface side of the grille. The spiral air flow generated by the rotation of the fan blade enters the grille from the windward surface and passes through the grille from the air outlet surface, so as to rectify the spiral air flow into a straight air flow through the grille.

[0053] In any of the above technical solutions, the air supply device is a fan.

[0054] In this technical solution, the specific product type corresponding to the fan is defined. The fan can be any one of a floor fan, a table fan, an exhaust fan, an air conditioner fan, etc. The above fans all provide an air flow that meets the user's needs. During the working process, the spiral air flow generated by the rotation of the fan blade flows into the grille from the windward surface of the grille. By setting the part of the first air guiding member located on the air outlet surface of the grille to be bent relative to the part of the first air guiding member located on the windward surface of the grille, the included angle between the air flow inflow direction and the first air guiding member can be reduced, so that the spiral air flow can be smoothly introduced into the grille, reducing the resistance between the air flow and the first air guiding member, weakening the impact of the air flow on the first air guiding member, and further achieving the technical effects of improving the matching degree of the grille and the fan, reducing the energy loss of the air flow flowing through the grille, increasing the flow velocity of the air flow flowing out of the grille, reducing the noise generated by the interaction between the grille and the air flow, reducing the energy consumption of the air supply device, and improving the user experience.

[0055] Additional aspects and advantages of the present invention will become apparent in the following description section or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0057] Figure 1 FIG. 1 shows one of the schematic structural diagrams of a grille according to an embodiment of the present invention;

[0058] Figure 2 FIG. 2 shows Figure 1 a partial enlarged view of a first air guiding member in area A of the embodiment shown;

[0059] Figure 3 FIG. 3 shows the schematic structural diagram of a fan according to an embodiment of the present invention;

[0060] Figure 4 FIG. 4 shows another schematic structural diagram of a grille according to an embodiment of the present invention;

[0061] Figure 5 FIG. 5 shows Figure 4 a cross-sectional view of the grille shown in the B-B direction.

[0062] Wherein, Figures 1 to 5 the correspondence between the reference numerals in the drawings and the component names is as follows:

[0063] 1 grille, 10 first air guiding member, 12 first section, 122 first line, 124 second line, 14 second section, 142 third line, 144 fourth line, 16 windward surface, 18 air outlet surface, 20 positioning portion, 30 first positioning member, 40 second positioning member, 50 second air guiding member, 3 inner ring air duct, 5 outer ring air duct, 7 fan blade. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0064] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0065] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0066] The following refers to Figures 1 to 5 describe a grille assembly and an air supply device according to some embodiments of the present invention.

[0067] Embodiment 1:

[0068] As Figure 1 and Figure 3 shown, in the first - aspect embodiment of the present invention, a grille assembly of a blowing device is provided. The grille assembly includes: a grille 1, having a windward surface 16 and a leeward surface 18, and the grille 1 includes a plurality of first air - guiding members 10; wherein, a cross - section is obtained by intercepting the first air - guiding member 10 with a plane perpendicular to the extending direction of the first air - guiding member 10. On the cross - section, the part closer to the leeward surface 18 of the grille 1 is bent relative to the part closer to the windward surface 16 of the grille 1.

[0069] The first - aspect embodiment of the present invention defines a grille assembly adapted to a rotating blade, and specifically realizes the matching between the grille 1 and the airflow generated by the blade by bending the first air - guiding member 10 in the airflow transmission direction.

[0070] In this embodiment, the grille 1 assembly includes a grille 1, and the grille 1 is arranged on the blowing device in a supporting manner, and the grille 1 includes a windward surface 16 and a leeward surface 18. Specifically, the grille 1 is arranged at the air outlet of the blowing device, the windward surface 16 faces the inside of the blowing device, and the leeward surface 18 faces the target air - outlet direction. During the working process, the airflow generated by the blowing device penetrates into the grille 1 from the windward surface 16 and penetrates out of the grille 1 from the leeward surface 18. Among them, when a wind blade is arranged in the blowing device, the distance that the spiral airflow generated by the rotation of the wind blade can flow is relatively limited. When the spiral airflow flows along the axis direction of the wind blade for a certain length, it will disperse and stop flowing continuously on the axis. For this reason, the present application provides a first air - guiding member 10 on the grille 1. The first air - guiding member 10 can change the direction of the airflow flowing through the grille 1, and specifically can rectify the spiral airflow flowing into the grille 1 into a straight - line airflow, so as to make the airflow more concentrated, extend the blowing distance of the fan, and avoid the rapid dissipation of the spiral airflow.

[0071] On this basis, this embodiment further defines that a part of the first air - guiding member 10 closer to the leeward surface 18 of the grille 1 is bent relative to a part of the first air - guiding member 10 closer to the windward surface 16. Among them, this bending is used to describe the extending direction of the first air - guiding member 10 in the direction from the windward surface 16 to the leeward surface 18. In the intercepted cross - section, the two sides of the bending area on the first air - guiding member 10 can be two straight lines with different extending directions, or two arcs with different curvatures, and of course, it can also be an arc and a straight line.

[0072] During operation, the spiral air flow generated by the rotation of the fan flows into the mesh cover 1 from the windward surface 16 of the mesh cover 1. By arranging that a part of the first air guiding member 10 near the air outlet surface 18 of the mesh cover 1 is bent relative to a part of the first air guiding member 10 near the windward surface 16 of the mesh cover 1, the spiral air flow flowing towards the mesh cover 1 can be straightened after being guided by the bent first air guiding member 10 on the mesh cover 1, so as to form an air flow extending in a straight line direction, thereby enabling the air flow to be blown to a farther area.

[0073] On the other hand, a part of the first air guiding member 10 near the windward surface 16 of the mesh cover 1 can reduce the included angle between the air flow inflow direction and the first air guiding member 10, enabling the spiral air flow to be smoothly introduced into the mesh cover 1, reducing the resistance between the air flow and the first air guiding member 10, weakening the impact of the air flow on the first air guiding member 10, and further achieving the technical effects of improving the matching degree between the mesh cover 1 and the fan, reducing the energy loss of the air flow flowing through the mesh cover 1, increasing the flow velocity of the air flow flowing out of the mesh cover 1, reducing the noise generated by the interaction between the mesh cover 1 and the air flow, reducing the energy consumption of the air supply device, and improving the user experience.

[0074] Embodiment 2:

[0075] As Figure 2 shown, in the second aspect embodiment of the present invention, the first air guiding member 10 includes: a first section 12, near the air outlet surface; a second section 14, connected to the first section 12, the second section 14 is near the windward surface, and the second section 14 is bent relative to the first section 12.

[0076] The embodiment of the third aspect of the present invention makes specific limitations on the structure of the first air guiding member 10.

[0077] In this embodiment, in the direction from the windward surface 16 to the air outlet surface 18 of the mesh cover 1, the first air guiding member 10 is divided into a first section 12 and a second section 14. The first section is near the air outlet surface, the second section is near the windward surface, the first section 12 is connected to the second section 14, and the surface where the first section 12 and the second section 14 are connected is smoothly transitioned.

[0078] Specifically, the first section 12 is close to the air outlet surface of the wire mesh cover 1, and there is an included angle between the air guiding surface of the first section 12 and the flowing direction of the introduced air flow. The air flow introduced into the wire mesh cover 1 changes its flowing direction under the guiding action of the first section 12. Specifically, the first section 12 guides the spiral air flow introduced into the wire mesh cover 1 into a direct blowing air flow to achieve the convergence of the air flow and extend the flowing distance of the air flow. The second section 14 is close to the windward surface of the wire mesh cover 1 and is used to introduce the air flow into the wire mesh cover 1. The spiral air flow generated by the rotation of the wind blades flows into the wire mesh cover 1 at a certain angle. By setting the second section 14 to be bent relative to the first section 12, the bent second section 14 can be made to match the flowing direction of the inflowing air flow, so that the spiral air flow can smoothly rotate into the wire mesh cover 1, weaken the impact of the air flow on the wire mesh cover 1, thereby reducing the pneumatic noise and increasing the air flow velocity at the air outlet of the wire mesh cover 1.

[0079] Furthermore, the technical effects of optimizing the structure of the first air guiding member 10, improving the matching degree between the wire mesh cover 1 and the wind blades, reducing the working noise of the fan, and enhancing the user experience are achieved.

[0080] Specifically, the surface of the second section 14 is tangent to the flowing direction of the inflowing air flow, thereby minimizing the air flow resistance and reducing the noise.

[0081] Embodiment Three:

[0082] As Figure 2 shown, in the third aspect embodiment of the present invention, in any of the above technical solutions, an included angle is formed at the bent portion between the first section 12 and the second section 14, and the included angle is an obtuse angle.

[0083] In this embodiment, on the intercepted cross-section, an included angle is formed at the bent portion between the first section 12 and the second section 14 and the included angle is an obtuse angle. By defining the included angle between the first section 12 and the second section 14 as an obtuse angle, an approximately smooth transition surface can be formed between the first section 12 and the second section 14, avoiding reducing the air flow velocity due to too large a bending amplitude of the first section 12 and the second section 14. Thus, the resistance of the wire mesh cover 1 to the air flow is reduced, and the air flow passing through the wire mesh cover 1 can be blown to a farther area.

[0084] Embodiment Four:

[0085] As Figure 2 shown, in the fourth aspect embodiment of the present invention, the first section 12 includes a first line 122 and a second line 124, and the second section 14 includes a third line 142 and a fourth line 144; the first line 122 is connected to the third line 142, and a first included angle is formed between the first line 122 and the third line 142; the second line 124 is connected to the fourth line 144, and a second included angle is formed between the second line 124 and the fourth line 144; wherein, the angle of the second included angle is greater than the angle of the first included angle.

[0086] In the embodiment of the fourth aspect of the present invention, a specific limitation is made on the bending angle between the first section 12 and the second section 14.

[0087] In this embodiment, the first section 12 includes a first line 122 and a second line 124, and the first line 122 and the second line 124 are opposite to each other. The second section 14 includes a third line 142 and a fourth line 144, and the third line 142 and the fourth line 144 are opposite to each other.

[0088] On one side of the first air guiding member 10, the first line 122 is connected to the third line 142, and the third line 142 is bent relative to the first line 122. Specifically, the included angle between the first line 122 and the third line 142 is the first included angle Φ. On the other side of the first air guiding member 10, the second line 124 is connected to the fourth line 144, and the fourth line 144 is bent relative to the second line 124. Specifically, the included angle between the second line 124 and the fourth line 144 is the second included angle ψ.

[0089] The first section 12 is used to change the flow direction of the air flow so that the air flow blows straight out. Therefore, the angle of the first section 12 on the mesh cover 1 is relatively fixed. A rectifying channel is defined between multiple first sections 12, and the air flow is converged after flowing through this rectifying channel. A drainage channel is defined between multiple second sections 14. By specifically limiting the bending angle of the two surfaces responsible for drainage on the second section 14 relative to the first section 12, the deflection angle of the drainage channel on the mesh cover 1 can be correspondingly adjusted to match the inflow direction of the spiral air flow flowing into the mesh cover 1. Similar to a screw connection, the higher the matching degree between the drainage channel and the spiral air flow direction, the smaller the resistance, the lower the air flow energy loss, and the corresponding smaller the noise.

[0090] Furthermore, the technical effects of optimizing the structure of the first air guiding member 10, reducing the aerodynamic resistance of the first air guiding member 10, increasing the air flow velocity flowing out of the first air guiding member 10, reducing the aerodynamic noise of the first air guiding member 10, and improving the user experience are achieved.

[0091] Embodiment Five:

[0092] As Figure 2 shown, in the embodiment of the fifth aspect of the present invention, the angle of the first included angle is greater than or equal to 160° and less than or equal to 178°; the angle of the second included angle is greater than or equal to 164° and less than or equal to 175°.

[0093] In this embodiment, on one side of the first air guide member 10, the first line 122 is connected to the third line 142, and the third line 142 is bent relative to the first line 122. Specifically, the first included angle Φ between the first line 122 and the third line 142 is greater than or equal to 160° and less than or equal to 178°, and the corresponding bending angle of the third line 142 relative to the first line 122 is greater than or equal to 2° and less than or equal to 20°. On the other side of the first air guide member 10, the second line 124 is connected to the fourth line 144, and the fourth line 144 is bent relative to the second line 124. Specifically, the second included angle ψ between the second line 124 and the fourth line 144 is greater than or equal to 164° and less than or equal to 175°, and the corresponding bending angle of the fourth line 144 relative to the second line 124 is greater than or equal to 5° and less than or equal to 16°. In this regard, by limiting the above angle range, the shape of the air duct formed between two adjacent first air guide members 10 can be optimized to improve the matching degree between the air duct and the spiral air flow flowing into the mesh cover 1. Specifically, on the one hand, the frictional resistance between the introduced air flow and the second section 14 can be reduced, and on the other hand, it can be ensured that the spiral air flow is rectified into an air flow flowing in a single direction under the action of the first section 12, and on this basis, the frictional force between the spiral air flow and the first section 12 is reduced as much as possible. Furthermore, the technical effects of optimizing the shape of the first air guide member 10, increasing the transmission distance of the air flow passing through the mesh cover 1, and reducing the aerodynamic noise are achieved.

[0094] Specifically, when Φ is 173° and ψ is 175°, it can ensure that the air flow before rectification is tangent to the second section 14, the resistance reaches the minimum, and at the same time, it can ensure that the flow direction of the air flow rectified by the first section 12 is consistent with the direction from the windward surface to the leeward surface, so as to improve the rectification accuracy and reliability.

[0095] Embodiment Six:

[0096] As Figure 2 shown, in the sixth aspect embodiment of the present invention, the third line 142 extends obliquely away from the fourth line 144 in the direction from the windward surface 16 to the first line 122; the first line 122 extends obliquely away from the second line 124 in the direction from the third line 142 to the leeward surface 18.

[0097] In this embodiment, the relationship between the upper and lower surfaces of the first section 12 and the second section 14 is defined. Specifically, on the second section 14, the third line 142 extends obliquely away from the fourth line 144 in the direction from the windward surface 16 to the first line 122. Correspondingly, for the airflow blowing into the mesh cover 1, under the guiding action of the third line 142, the airflow gradually flows away from the fourth line 144. On the first section 12, the first line 122 extends obliquely away from the second line 124 in the direction from the third line 142 to the air outlet surface 18. Correspondingly, for the airflow blowing into the mesh cover 1, under the guiding action of the first line 122, the airflow also gradually flows away from the second line 124. By defining the inclined extension trends of the first line 122 and the second line 124 as above, the shape of the first air guiding member 10 can be made more compatible with the spiral airflow. Specifically, during the working process, the airflow can flow along the first line 122 and the third line 142, rather than being directly dispersed by the first line 122 and the third line 142. Furthermore, the technical effects of reducing the resistance of the first air guiding member 10 to the airflow, improving the air guiding effect of the first air guiding member 10, and extending the blowing distance of the airflow are achieved.

[0098] Embodiment Seven:

[0099] As Figure 2 shown, in the seventh aspect embodiment of the present invention, the minimum thickness of the first section 12 is greater than the maximum thickness of the second section 14; and / or, in the direction from the windward surface 16 to the air outlet surface 18, the thickness of the first air guiding member 10 gradually increases.

[0100] In this embodiment, the shapes of the first section 12 and the second section 14 are further defined. Specifically, the direction perpendicular to the extension direction of the first guiding member is the thickness direction. In this regard, the minimum thickness of the first section 12 is greater than the maximum thickness of the second section 14, and / or the thickness of the first air guiding member 10 gradually increases in the direction from the windward surface 16 to the air outlet surface 18. By defining that the minimum thickness of the first section 12 is greater than the maximum thickness of the second section 14, the matching degree between the first air guiding member 10 and the spiral airflow can be enhanced, so as to introduce the airflow with less resistance, and at the same time rectify the airflow into a straight airflow and export it with less loss. Furthermore, the blowing distance of the airflow is extended on the basis of ensuring the air guiding effect. Among them, by defining that the thickness of the first air guiding member 10 gradually increases in the direction from the windward surface 16 to the air outlet surface 18, a first air guiding member 10 with a smooth transition can be formed, thereby further improving the matching degree between the first air guiding member 10 and the spiral airflow and reducing the airflow loss caused by resistance.

[0101] Embodiment Eight:

[0102] As Figure 2As shown, in the embodiment of the eighth aspect of the present invention, in the cross-section, the ratio of the length of the second section 14 to the length of the first air guide member 10 is greater than or equal to 0.4 and less than or equal to 0.6.

[0103] In this embodiment, on any cross-section of the first air guide member 10 and in the direction from the windward surface 16 to the air outlet surface 18, the total length of the first air guide member 10 is W0, and the length of the second section 14 is W1, where the ratio of W1 to W0 is greater than or equal to 0.4 and less than or equal to 0.6. By specifically defining the length relationship between the second section 14 and the first air guide member 10, the first air guide member 10 can be more matched with the airflow generated by the fan, so as to further reduce the resistance of the first air guide member 10 to the airflow and reduce the aerodynamic noise. Furthermore, the technical effect of optimizing the structure of the first air guide member 10 and improving the matching degree between the grille 1 and the fan blades is achieved.

[0104] Specifically, w1 / w0 = 0.495;

[0105] w0 = 11.05 mm, w1 = 5.47 mm.

[0106] Embodiment Nine:

[0107] As Figure 4 and Figure 5 shown, in the embodiment of the ninth aspect of the present invention, in the cross-section where the axis of the grille 1 is located and in the direction of the axis, the ratio of the thickness of the first air guide member 10 to the maximum thickness of the grille 1 is greater than or equal to 0.22 and less than or equal to 0.32.

[0108] In this embodiment, the shape of the grille 1 matches the fan blades, and the axis of the grille 1 coincides with the axis of the fan blades. The grille 1 is intercepted by a plane where the axis of the grille 1 is located. In this cross-section and along the axis direction, the maximum thickness of the grille 1 is h0. By default, the airflow direction is the same as the axis direction. In this direction, the length of the first air guide member 10 is the aforementioned w0. Specifically, the ratio of w0 to h0 is greater than or equal to 0.22 and less than or equal to 0.23.

[0109] By specifically defining the ratio of the maximum thickness of the grille 1 and the length of the first air guide member 10 along the airflow direction, the airflow converging ability of the grille 1 can be improved, ensuring that the airflow rectified by the grille 1 can be blown out in a straight line, thereby increasing the flow distance of the airflow blown by the fan, expanding the coverage range of the airflow output by the fan, and improving the technical effect of the user experience.

[0110] Specifically, the ratio of w0 to h0 is 0.27625;

[0111] w0 is 11.05 mm, and h0 is 40 mm.

[0112] Embodiment Ten:

[0113] As Figure 4 and Figure 5 shown, in the embodiment of the tenth aspect of the present invention, the grille 1 further includes: a positioning portion 20; a first positioning member 30, the first positioning member 30 is disposed around the positioning portion 20, and both ends of the first air guiding member 10 are respectively connected to the positioning portion 20 and the first positioning member 30.

[0114] In this technical solution, the structure of the grille 1 is specifically defined. The grille 1 includes a positioning portion 20 and a first positioning member 30, and the positioning portion 20 and the first positioning member 30 jointly position the first air guiding member 10. Among them, the positioning portion 20 is disposed at the center of the grille 1, the first positioning member 30 is disposed around the positioning portion 20, and there is a gap between the first positioning member 30 and the positioning portion 20. The first air guiding member 10 is disposed in this gap, one end of the first air guiding member 10 is connected to the positioning portion 20, and the other end of the first air guiding member 10 is connected to the first positioning member 30, so as to position and install the first air guiding member 10 through the positioning portion 20 and the first positioning member 30, ensuring that the first air guiding member 10 is installed at a predetermined installation position of the grille 1.

[0115] At the same time, the first positioning member 30 can support and protect the first air guiding member 10 to a certain extent, avoiding the first air guiding member 10 from being deflected or damaged during the working process. Furthermore, the technical effects of optimizing the structure of the grille 1 and improving the structural stability and reliability of the grille 1 are achieved.

[0116] Embodiment Eleven:

[0117] As Figure 4 shown, in the embodiment of the eleventh aspect of the present invention, in the direction from the positioning portion 20 to the first positioning member 30, the first air guiding member 10 is an arc-shaped grille bent toward the direction where the positioning portion 20 is located.

[0118] The embodiment of the eleventh aspect of the present invention specifically defines the shape of the first positioning member 30 in the radial direction of the grille 1.

[0119] In this embodiment, in the direction from the positioning portion 20 to the first positioning member 30, the first air guiding member 10 bends toward the direction where the positioning portion 20 is located to form an arc-shaped grille. A plurality of arc-shaped grilles form a spiral air duct on the grille 1, and this spiral air duct can better match the spiral air flow generated by the rotation of the fan blades. During the process of the spiral air flow passing through the grille 1, the spiral air flow enters the grille 1 in a form similar to a threaded connection. Thus, while converging the spiral air flow, the wind resistance of the grille 1 to the spiral air flow is reduced, the air outlet speed of the fan is increased, and the aerodynamic noise generated by the fan during the working process is reduced. Furthermore, the user experience is improved.

[0120] Specifically, the bending direction of the first air guiding member 10 is opposite to the rotation direction of the fan blades in the air supply device adapted thereto, so as to ensure that the air flow ejected by the fan blades can be swirled into the air duct surrounded by the first air guiding member 10, thereby improving the matching degree between the fan blades and the mesh cover 1.

[0121] Embodiment Twelve:

[0122] As Figure 4 shown, in the embodiment of the twelfth aspect of the present invention, the mesh cover 1 further includes: a second positioning member 40, the second positioning member 40 is located outside the first positioning member 30; a second air guiding member 50, both ends of the second air guiding member 50 are respectively connected to the first positioning member 30 and the second positioning member 40, and the second air guiding member 50 is configured to diffuse the air flow.

[0123] In the embodiment of the twelfth aspect of the present invention, the mesh cover 1 includes an inner ring air duct 3 and an outer ring air duct 5, and the structure of the outer ring air duct 5 is specifically defined.

[0124] In this embodiment, the inner ring air duct 3 is surrounded by the first air guiding member 10, the first air guiding member 10 is fixed between the positioning portion 20 and the first positioning member 30, and the first positioning member 30 reinforces the first air guiding member 10. The outer ring air duct 5 is surrounded by the second air guiding member 50, the second air guiding member 50 is fixed between the first positioning member 30 and the second positioning member 40. Specifically, the second positioning member 40 is arranged around the first positioning member 30, there is a gap between the second positioning member 40 and the first positioning member 30, the second air guiding member 50 is arranged in this gap, one end of the second air guiding member 50 is connected to the first positioning member 30, and the other end of the second air guiding member 50 is connected to the second positioning member 40, so as to form an annular outer ring air duct 5 on the periphery of the entire air duct.

[0125] The outer ring air duct 5 surrounded by the second air guiding member 50 can disperse the air flow, thereby realizing the diffusion of the air flow. By providing the second air guiding member 50 and constructing the outer ring air duct 5, the blowing range of the fan at a short distance can be expanded, so as to ensure that the air flow blown by the fan can cover a large area within a relatively short distance. Furthermore, the technical effects of optimizing the fan structure, strengthening the functionality of the fan, and meeting the user's needs are achieved.

[0126] Embodiment Thirteen:

[0127] As Figure 4 shown, in the embodiment of the thirteenth aspect of the present invention, the first positioning member 30 and the second positioning member 40 are ring-shaped; the second air guiding member 50 is a straight plate extending from the first positioning member 30 towards the second positioning member 40.

[0128] The embodiment of the ninth aspect of the present invention specifically defines the structure of the second air guiding member 50.

[0129] In this embodiment, both the first positioning member 30 and the second positioning member 40 are annular structures, specifically coaxial rings. On this basis, the second air guiding member 50 is a flat plate, which extends from the first positioning member 30 towards the second positioning member 40, specifically in the radial direction of the two rings. By defining the second air guiding member 50 as a flat plate, a straight-hole air duct can be formed by the second air guiding member 50.

[0130] Specifically, the extending direction of the air duct enclosed by the second air guiding member 50 is consistent with the axis direction of the grille 1, thereby enhancing the diffusion effect of the outer air duct 5 on the air flow and improving the coverage range of the fan at a short distance.

[0131] Embodiment Fourteen:

[0132] As Figure 3 shown, in the fourteenth aspect embodiment of the present invention, the air supply device includes: the grille assembly in any of the above embodiments; a fan blade 7, and the fan blade 7 is arranged on one side close to the windward surface 16.

[0133] In this embodiment, an air supply device including the grille assembly in any of the above embodiments is defined. Therefore, the air supply device has the advantages of the grille assembly in any of the above embodiments and can achieve the technical effects in any of the above embodiments. To avoid repetition, it will not be elaborated here.

[0134] On this basis, a fan blade 7 is further arranged on the air supply device. The fan blade 7 is used to generate an air flow. During the working process, the fan blade 7 rotates, and the rotating fan blade 7 generates a spiral air flow on the air outlet surface 18 of the fan blade 7. The grille 1 and the fan blade 7 are arranged opposite to each other. Specifically, the fan blade 7 is arranged on one side of the windward surface 16 of the grille 1. The spiral air flow generated by the rotation of the fan blade 7 is introduced into the grille 1 from the windward surface 16 and passes through the grille 1 from the air outlet surface, so as to rectify the spiral air flow into a straight air flow through the grille 1.

[0135] Embodiment Fifteen:

[0136] In the fifteenth aspect embodiment of the present invention, the air supply device is a fan, for example, it can be any one of a floor fan, a table fan, a circulation fan, and an air conditioner fan.

[0137] In this embodiment, the specific product types corresponding to the fan are defined. The fan can be any one of an electric fan, a floor fan, a table fan, a circulation fan, an air conditioner fan, etc.

[0138] During the process of the above-mentioned fans providing users with airflow that meets their needs, the spiral airflow generated by the rotation of the fans flows into the mesh cover 1 from the windward surface 16 of the mesh cover 1. By setting a part of the first air guiding member 10 located on the air outlet surface 18 of the mesh cover 1 to be bent relative to a part of the first air guiding member 10 located on the windward surface 16 of the mesh cover 1, the included angle between the airflow inflow direction and the first air guiding member 10 can be reduced, enabling the spiral airflow to be smoothly guided into the mesh cover 1, reducing the resistance between the airflow and the first air guiding member 10, weakening the impact of the airflow on the first air guiding member 10, and thus achieving the technical effects of improving the matching degree between the mesh cover 1 and the fan, reducing the energy loss of the airflow flowing through the mesh cover 1, increasing the flow velocity of the airflow flowing out of the mesh cover 1, reducing the noise generated by the interaction between the mesh cover 1 and the airflow, reducing the energy consumption of the air supply device, and improving the user experience.

[0139] Example 16:

[0140] In the 16th aspect embodiment of the present invention, the aerodynamic performance of the fan is mainly determined by the fan blade and the mesh cover 1. For a fan blade with excellent performance, if the design of the matching mesh cover 1 is not good, the overall performance of the fan will also deteriorate. The mesh cover 1 model of the fan is as Figure 1 and Figure 4 shown.

[0141] The entire structure of the mesh cover 1 mainly includes: an inner ring air duct 3, a first positioning member 30, an outer ring air duct 5, and a second positioning member 40. The airflow coming out of the fan blade is spiral airflow. The main function of the inner ring air duct 3 is to rectify this part of the airflow, making the wind coming out of the mesh cover 1 straight, so that the wind is more concentrated and blows farther. The first positioning member 30 serves two purposes: one is to provide support and reinforcement, and the other is to prevent too much wind from spreading outwards and make the wind converge in the center. The function of the outer ring air duct 5 is to make the wind blow over a wider range. The function of the second positioning member 40 is to provide support and reinforcement.

[0142] The first air guiding member 10 on the mesh cover 1 has a function similar to that of a spoiler for the fan, which is to make the wind converge in the middle and make the wind stronger. The most important design for whether the mesh cover 1 matches the fan blade is the cross-sectional design of the first air guiding member 10. The cross-sectional design defined by the present invention can not only make the wind converge, but also minimize the resistance of the wind passing through the mesh cover 1.

[0143] According to the trend of the simulated airflow, the present invention designs a streamline cross-section of the first air guiding member 10, and its shape is as Figure 2 shown, which is mainly divided into two parts. The first bent section 12 at the front is a spoiler structure, which is mainly designed to be tangent to the airflow according to the airflow trend. The second section 14 is a turning part, which enables the wind to blow out of the mesh cover 1 in a straight line.

[0144] Through simulation experiments, the wind speed of the fan defined by the present invention is increased by 4.65% compared with the wind speed of the fan with the conventional grille 1. Since the air flow is tangent to the first section 12, the impact between the air flow and the grille 1 is reduced, and the resulting aerodynamic noise is reduced by about 0.5 dB.

[0145] During the working process, the spiral air flow generated by the rotation of the fan flows into the grille 1 from the windward surface 16 of the grille 1. By setting the part of the first air guiding member 10 located on the air outlet surface 18 of the grille 1 to be bent relative to the part of the first air guiding member 10 located on the windward surface 16 of the grille 1, the included angle between the air flow inflow direction and the first air guiding member 10 can be reduced, so that the spiral air flow can be smoothly guided into the grille 1, the resistance between the air flow and the first air guiding member 10 is reduced, the impact of the air flow on the first air guiding member 10 is weakened, and then the matching degree of the grille 1 and the fan is improved, the energy loss of the air flow flowing through the grille 1 is reduced, the flow velocity of the air flow flowing out of the grille 1 is increased, the noise generated by the interaction between the grille 1 and the air flow is reduced, the energy consumption of the air supply device is reduced, and the technical effect of improving the user experience is achieved.

[0146] Example Seventeen:

[0147] In the seventeenth aspect embodiment of the present invention, specific limitations are made on other structures of the fan. A housing and a driving member are further provided on the fan.

[0148] A cavity with an opening is provided on the housing.

[0149] The grille 1 is connected to the housing, and the grille 1 is provided at the opening.

[0150] The driving member is fixed in the housing, the power output end on the driving member is connected to the wind blade, and the air outlet side of the wind blade is arranged opposite to the opening on the cavity.

[0151] During the working process, the driving member drives the wind blade to rotate to generate a spiral air flow. When the spiral air flow flows to the grille 1:

[0152] The air flow corresponding to the inner ring air duct 3 on the grille 1 first contacts the first section 12 on the first air guiding member 10. The inner ring air duct 3 enclosed by the first section 12 bent relative to the second section 14 matches the spiral direction of the spiral air flow, so that the first air guiding member 10 can more easily guide the air flow into the grille 1. When the introduced air flow contacts the second section 14, the inner ring air duct 3 enclosed by the second section 14 changes the flow direction of the introduced air flow and finally discharges it along a straight line from the air outlet surface 18 of the grille 1.

[0153] The air flow corresponding to the outer ring air duct 5 on the grille 1 flows into the outer ring air duct 5 enclosed by the second air guiding member 50, and the air flow is scattered and discharged from the grille 1 under the action of the outer ring air duct 5.

[0154] In summary, the airflow generated by the rotation of the wind blade is spiral. The airflow in the central area of the mesh cover 1 changes to a straight airflow and converges towards the center after flowing through the mesh cover 1. This part of the airflow can blow a relatively long distance, thus meeting the requirement of the fan for supplying air to a distant area. The airflow in the edge area of the mesh cover 1 is diffused after flowing through the mesh cover 1 and flows towards the peripheral area of the mesh cover 1. The flow rate of this part of the airflow is relatively slower than that of the airflow in the central area, but the coverage area of this part of the airflow is much larger than that of the airflow in the central area, so that a larger area near the fan can be covered by the fan.

[0155] In the description of the present invention, the term "a plurality of" refers to two or more, unless otherwise clearly defined. The orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention; terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0156] In the description of the present invention, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0157] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grille assembly of a air supply device, characterized in that Comprising: A wire mesh cover, the wire mesh cover having a windward surface and a leeward surface, the wire mesh cover including a plurality of first air guiding members; The axis of the wire mesh cover coincides with the axis of the wind blades of the air supply device; Wherein, a cross-section is obtained by intercepting the first air guiding member with a plane perpendicular to the extending direction of the first air guiding member. On the cross-section, the part close to the leeward surface of the wire mesh cover is bent relative to the part close to the windward surface of the wire mesh cover; On the cross-section, the first air guiding member includes: A first section, close to the leeward surface; A second section, connected to the first section, the second section being close to the windward surface, and the second section being bent relative to the first section; An included angle is formed at the bending position between the first section and the second section, and the included angle is an obtuse angle; The first section includes a first line and a second line, and the second section includes a third line and a fourth line; The first line is connected to the third line, and a first included angle is formed between the first line and the third line; The second line is connected to the fourth line, and a second included angle is formed between the second line and the fourth line; Wherein, the angle of the second included angle is greater than the angle of the first included angle, and a plurality of the first sections define a rectifying channel therebetween, and a plurality of the second sections define a diversion channel therebetween.

2. The wire mesh cover assembly according to claim 1, wherein The angle of the first included angle is greater than or equal to 160° and less than or equal to 178°; The angle of the second included angle is greater than or equal to 164° and less than or equal to 175°.

3. The wire mesh component according to claim 1, characterized in that The third line extends obliquely away from the fourth line in the direction from the windward surface to the first line; The first line extends obliquely away from the second line in the direction from the third line to the leeward surface.

4. The wire mesh cover assembly according to claim 1, characterized in that, The minimum thickness of the first section is greater than the maximum thickness of the second section; and / or, In the direction from the windward surface to the leeward surface, the thickness of the first air guiding member gradually increases.

5. The mesh cover assembly according to claim 1, wherein On the cross-section, in the direction from the windward surface to the leeward surface, the ratio of the length of the first section to the length of the first air guiding member is greater than or equal to 0.4 and less than or equal to 0.

6.

6. The wire mesh component according to any one of claims 1 to 5, characterized in that, In the cross-section where the axis of the wire mesh cover is located, and in the direction of the axis, the ratio of the thickness of the first air guiding member to the maximum thickness of the wire mesh cover is greater than or equal to 0.22 and less than or equal to 0.

32.

7. The wire mesh component according to any one of claims 1 to 5, characterized in that The wire mesh cover further includes: A positioning portion; A first positioning member, the first positioning member is disposed around the positioning portion, and both ends of the first air guiding member are respectively connected to the positioning portion and the first positioning member.

8. The mesh cover assembly according to claim 7, characterized in that, In the direction from the positioning portion to the first positioning member, the first air guiding member is an arc-shaped grille bent towards the direction where the positioning portion is located.

9. The wire mesh cover assembly according to claim 8, wherein The wire mesh cover further includes: A second positioning member, the second positioning member is located outside the first positioning member; A second air guiding member, both ends of the second air guiding member are respectively connected to the first positioning member and the second positioning member, and the second air guiding member is configured to diffuse the airflow.

10. The wire mesh component according to claim 9, characterized in that, Both the first positioning member and the second positioning member are rings; The second air guiding member is a straight plate extending from the first positioning member towards the second positioning member.

11. An air supply device, characterized in that, Comprising: The grille assembly according to any one of claims 1 to 10; A wind blade, the wind blade being disposed on a side close to the windward surface.

12. The air supply device according to claim 11, wherein The air supply device is a fan.

Images