Inlet grille and fan

Abstract

This application belongs to the field of fans and relates to an air inlet grille and a fan. The air inlet grille includes multiple air guide ribs arranged radially around a preset axis. Adjacent air guide ribs are spaced apart, and the ends of the multiple air guide ribs near the preset axis are connected to form an air inlet area. The air guide ribs have a windward side and a leeward side arranged opposite each other. The leeward side is provided with a flow guiding structure, and the extension direction of the flow guiding structure intersects with the extension direction of the air inlet area. In this application, by connecting the ends of the multiple air guide ribs near the preset axis to form an air inlet area, providing a flow guiding structure on the leeward side of the air guide ribs, and having the extension direction of the flow guiding structure intersect with the extension direction of the air inlet area, an air inlet area is formed in the middle of the air inlet grille. After the airflow passes through the air inlet area, it can be dispersed by the flow guiding structure to effectively reduce the vortex in the middle of the leeward side of the air inlet grille, thereby reducing noise and improving blowing efficiency.

Description

Technical Field

[0001] This application relates to the field of fan technology, and more specifically, to an air intake grille and a fan. Background Technology

[0002] A fan is a household appliance that uses an electric motor to drive the fan blades to rotate, thereby accelerating the circulation of air. It is mainly used for cooling and ventilating the air and is widely used in homes, classrooms, offices, shops, hospitals, hotels and other places.

[0003] Generally, in order to facilitate air intake and exhaust, air intake grilles and air exhaust grilles are set at the air intake and exhaust positions of the fan. When the airflow flows from the windward side of the air intake grille to the leeward side of the air intake grille, a vortex will be formed in the middle of the leeward side of the air intake grille, which will generate noise and affect the blowing efficiency. Therefore, it is urgent to improve this. Utility Model Content

[0004] Therefore, it is necessary to provide an air intake grille that can effectively reduce the vortex in the middle of the leeward side of the air intake grille, so as to reduce noise and improve air blowing efficiency.

[0005] The embodiments of this application achieve the above objectives through the following technical solutions.

[0006] This application provides an air inlet grille, which includes multiple air guide ribs arranged radially around a preset axis. Adjacent air guide ribs are spaced apart, and the ends of the multiple air guide ribs near the preset axis are connected to form an air inlet area. A flow guiding structure is provided on the leeward side of the air guide ribs, and the extension direction of the flow guiding structure intersects with the extension direction of the air inlet area.

[0007] In one embodiment, the leeward side of the air guide rib is provided with a guide groove extending along its extension direction, and the guide groove is formed as the guide structure.

[0008] In one embodiment, the airflow guiding structure extends from the side of the airflow guide rib close to the preset axis to the side of the airflow guide rib away from the preset axis.

[0009] In one embodiment, the air inlet grille further includes a base and an annulus surrounding the base, the outer periphery of the base and the inner periphery of the annulus being connected by a plurality of air guide ribs, and the air inlet area being disposed on the base.

[0010] In one embodiment, the air guide rib includes a first guide section and a second guide section connected sequentially from its windward side to its leeward side, wherein the width of the second guide section is smaller than the width of the first guide section.

[0011] In one embodiment, the width of the second guide section is gradually reduced from the first guide section toward the second guide section.

[0012] In one embodiment, two adjacent air guide ribs are connected on the side near the preset axis and form a flow guide slope, which is inclined outward from the windward side of the air guide rib to the leeward side of the air guide rib.

[0013] In one embodiment, the depth of the flow guiding structure is gradually reduced from the side closest to the preset axis to the side furthest from the preset axis.

[0014] In one embodiment, the air intake area is a through-hole air intake.

[0015] This application also provides a fan, which includes an air inlet grille as described above and a fan body, wherein the air inlet grille is disposed on the fan body.

[0016] In one embodiment, the air intake area is a through-hole air intake.

[0017] Compared with the prior art, the embodiments of this application have the following advantages: In this application, multiple air guide ribs are connected at one end near the preset axis to form an air inlet area, a flow guiding structure is provided on the leeward side of the air guide ribs, and the extension direction of the flow guiding structure intersects with the extension direction of the air inlet area. This arrangement allows an air inlet area to be formed in the middle of the air inlet grille. After the airflow passes through the air inlet area, it can be dispersed by the flow guiding structure to effectively reduce the vortex in the middle of the leeward side of the air inlet grille, thereby reducing noise and improving blowing efficiency. Attached Figure Description

[0018] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the air intake grille in one embodiment of this application;

[0020] Figure 2 This is a cross-sectional structural diagram of the guiding surface of the flow guiding structure;

[0021] Figure 3 This is to show the cross-sectional structural diagrams of the first and second guide sections;

[0022] Figure 4 yes Figure 3A magnified structural diagram of part A in the middle;

[0023] Figure 5 yes Figure 1 Another structural diagram from a different perspective;

[0024] Figure 6 yes Figure 5 A magnified structural diagram of local area B in the middle section;

[0025] Figure 7 This is a schematic diagram of the overall structure of the fan in one embodiment of this application.

[0026] Reference numerals: 1000, fan; 100, air inlet grille; 101, air inlet area; 110, air guide rib; 111, first guide section; 1111, guide slope; 112, second guide section; 1121, avoidance slope; 1101, guide slope; 120, guide structure; 121, guide surface; 130, base; 140, ring body; 200, fan body. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] This application provides an air intake grille, which has an air intake area formed in the middle of the air intake grille. With the air guide structure on the leeward side of the air guide rib, the airflow can be dispersed to the surroundings after passing through the air intake area by the air guide structure. This can effectively reduce the vortex in the middle of the leeward side of the air intake grille, thereby reducing noise and improving the blowing efficiency.

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0031] Please see Figure 1 and Figure 2 This application provides an air intake grille 100, which includes a plurality of air guide ribs 110. The plurality of air guide ribs 110 are arranged radially around a preset axis, which is the axial direction of the fan 1000 when it is taking in air. Adjacent air guide ribs 110 are spaced apart, and the ends of the plurality of air guide ribs 110 close to the preset axis are connected to form an air intake area 101. The ends of the plurality of air guide ribs 110 away from the preset axis are used to connect to the fan body 200, which will be described below. A flow guiding structure 120 is provided on the leeward side of the air guide ribs 110, and the extension direction of the flow guiding structure 120 intersects the extension direction of the air intake area 101.

[0032] There are many ways to arrange multiple air guide ribs 110 radially. In this embodiment, the multiple air guide ribs 110 are arranged in a straight radial pattern, and each air guide rib 110 is set in a straight line. Correspondingly, the air guiding structure 120 is also set in a straight line. This arrangement allows the air guiding structure 120 to directly guide the airflow, which helps to reduce the vortex in the middle of the leeward side of the air inlet grille 100. In other embodiments, the multiple air guide ribs 110 can also be arranged in a spiral radial pattern, and each air guide rib 110 is set in an arc shape. Correspondingly, the air guiding structure 120 is also set in an arc shape. The multiple air guide ribs 110 can also be arranged in a straight radial pattern on the side closer to the preset axis and in a spiral radial pattern on the side farther from the preset axis. The multiple air guide ribs 110 can also be arranged in other radial patterns, which will not be listed here.

[0033] In this embodiment, the spacing between any two adjacent air guide ribs 110 at the same position is the same. This setting ensures that the air intake area between any two adjacent air guide ribs 110 is the same, thereby making the air intake more uniform and the air intake process more stable. This avoids the problem of uneven air output from the fan 1000, which leads to a poor user experience.

[0034] The windward and leeward sides of the air guide rib 110 have many shapes. They can be set in a planar shape parallel to the vertical plane, or they can be set in a sloping shape relative to the vertical plane, or they can be set in a convex arc shape, or they can be set in a concave arc shape. No specific limitation is made here. Figure 1 The diagram shows that the windward side of the air guide rib 110 is arranged in an outward convex arc shape, while the leeward side of the air guide rib 110 is arranged in a flat shape.

[0035] It is worth mentioning that there are many types of air intake zones 101. In this embodiment, the air intake zone 101 is formed by an air inlet that runs through the windward side to the leeward side of the guide rib 110. This arrangement allows airflow to pass through all positions of the air intake zone 101, reducing obstruction of airflow and reducing vortices in the leeward side of the air intake grille 100. Obviously, when the air intake zone 101 is an air inlet, the shape of the air inlet can be varied. The air inlet can be a regular shape such as a circle, square, ellipse, or rhombus, or it can be other irregular shapes. Similarly, the number of air inlets can be one or more. In this article, "multiple" refers to at least two, and no specific limitation is made here. In other embodiments, the air intake zone 101 can also be formed by other types of air intake structures that allow airflow, such as air intake mesh covers.

[0036] In this embodiment, each guide rib 110 has a flow guiding structure 120 on its leeward side. This arrangement allows the airflow to be evenly dispersed in all directions after passing through the air inlet area 101 via the multiple flow guiding structures 120, further reducing the formation of eddies. In other embodiments, some of the multiple guide ribs 110 may have flow guiding structures 120, while others may not. For example, there may be ten guide ribs 110, with six guide ribs 110 having flow guiding structures 120 and four guide ribs 110 not having flow guiding structures 120.

[0037] Obviously, the air guide rib 110 and the flow guiding structure 120 can be set in a one-to-one manner: one flow guiding structure 120 is provided on one air guide rib 110; the air guide rib 110 and the flow guiding structure 120 can also be set in a one-to-many manner: multiple flow guiding structures 120 are provided on one air guide rib 110. In this case, the types of multiple flow guiding structures 120 can be the same or different, and no specific limitation is made here.

[0038] It is understandable that the intersection of the extension direction of the guide structure 120 and the extension direction of the air inlet 101 can ensure that the airflow can be blown to the guide structure 120 after passing through the air inlet 101. Obviously, the extension direction of the guide structure 120 and the extension direction of the air inlet 101 can be perpendicular or inclined. No specific limitation is made here.

[0039] Through the above technical solution, the middle part of the air intake grille 100 is formed into an air intake area 101 that allows airflow to pass through. The air intake area 101 is then combined with the air guide structure 120 on the leeward side of the air guide rib 110. When air enters through the air intake grille 100, the airflow will first pass through the air intake area 101 in the middle of the air intake grille 100, and then be guided by the air guide structure 120 and dispersed to the surroundings. This effectively reduces the vortex in the middle of the leeward side of the air intake grille 100, thereby reducing noise and improving blowing efficiency.

[0040] It is understood that the length of the flow guiding structure 120 can be less than the length of the air guide rib 110, the length of the flow guiding structure 120 can be equal to the length of the air guide rib 110, or the length of the flow guiding structure 120 can be slightly greater than the length of the air guide rib 110. If the length of the flow guiding structure 120 is also equal to the length of the air guide rib 110, the airflow can travel a sufficiently long distance when guided by the flow guiding structure 120, further reducing the formation of eddies. Therefore, please refer to [link / reference needed]. Figure 1 and Figure 2 In one embodiment of the application, the flow guiding structure 120 extends from the side of the air guide rib 110 close to the preset axis to the side of the air guide rib 110 away from the preset axis, so that the length of the flow guiding structure 120 is equal to the length of the air guide rib 110.

[0041] There are many types of the aforementioned flow guiding structure 120; please refer to [link / reference]. Figure 1 and Figure 2 In one embodiment of the application, the leeward side of the air guide rib 110 is provided with a flow guide groove extending along its extension direction, and the flow guide groove is formed into a flow guide structure 120. This arrangement makes it convenient to form the flow guide structure 120 by machining on the basis of the air guide rib 110.

[0042] Specifically, the guide channel extends through both ends. This design ensures that the airflow can flow into the guide structure 120 after passing through the air inlet zone 101, while also preventing the guide channel from obstructing the airflow flowing into it.

[0043] In this embodiment, the width of the guide channel is equal at any position along its extension direction. This arrangement further ensures that the sidewalls of the guide channel do not obstruct the airflow flowing into it. In other embodiments, the width of the guide channel may also be different at any position along its extension direction. For example, the width of the guide channel in its extension direction may gradually decrease from the side closer to the air inlet area 101 to the side farther from the air inlet area 101, or it may gradually increase from the side closer to the air inlet area 101 to the side farther from the air inlet area 101.

[0044] In other embodiments, the flow guiding structure 120 may also be configured to include two parallel flow guiding plates, which are installed on the leeward side of the air guide rib 110 and extend along the extension direction of the air guide rib 110. The two flow guiding plates and the leeward side of the air guide rib 110 surround each other to form a flow guiding channel. The flow guiding structure 120 may also be provided with a long strip-shaped flow guiding member, with the two sides of the flow guiding member in the width direction correspondingly forming a fixed side and a flow guiding side. The fixed side is installed on the leeward side of the air guide rib 110, and the flow guiding side is provided with a semi-circular flow guiding channel extending along its length direction.

[0045] Please see Figure 1 and Figure 2 In order to facilitate the flow of air through the air inlet 101 to the air guide structure 120, in one embodiment of this application, the leeward side of the air guide rib 110 is set beyond the air outlet side of the air inlet 101 so that the air guide structure 120 is adjacent to the air outlet side of the air inlet 101.

[0046] In other embodiments, the leeward side of the air guide rib 110 and the air outlet side of the air inlet area 101 can also be set flush with each other. In this case, if the flow guide structure 120 is set as a flow guide groove, the side of the flow guide groove near the preset axis extends through to communicate with the inner peripheral wall of the air inlet area 101.

[0047] Considering that if the width of the guide rib 110 near the leeward side can be made smaller than the width of the guide rib 110 near the windward side, the area of ​​the airflow passage formed between the leeward sides of two adjacent guide ribs 110 can be larger than the area formed between the windward sides of two adjacent guide ribs 110. This reduces airflow obstruction when airflow passes between the leeward sides of two adjacent guide ribs 110, resulting in dispersed and slower airflow, which is more conducive to reducing eddy formation. Therefore, please refer to [reference needed]. Figure 3 and Figure 4 In one embodiment of the application, the air guide rib 110 includes a first guide section 111 and a second guide section 112 connected sequentially from its windward side to its leeward side. The width of the second guide section 112 is smaller than the width of the first guide section 111. The first guide section 111 is located on the air guide rib 110 near the windward side, and the second guide section 112 is located on the air guide rib 110 near the leeward side.

[0048] Further, please refer to Figure 3 and Figure 4In one embodiment of the application, the width of the second guide section 112 gradually narrows from the first guide section 111 towards the second guide section 112. This configuration makes the airflow area formed between two adjacent second guide sections 112 funnel-shaped, with the larger end facing the leeward side of the guide rib 110, thus making the airflow more dispersed and the flow velocity gentler after passing between two adjacent second guide sections 112. Specifically, both sides of the second guide section 112 in the width direction are formed as inclined avoidance slopes 1121, which can reduce the obstruction of the airflow and guide the airflow.

[0049] Further, please refer to Figure 3 and Figure 4 In one embodiment of the application, the width of the first guide section 111 gradually widens from the first guide section 111 towards the second guide section 112. This configuration makes the airflow area formed between two adjacent first guide sections 111 funnel-shaped, with the larger end facing the windward side of the guide rib 110. This allows the airflow to be more concentrated and faster after passing between two adjacent first guide sections 111, facilitating the inflow of air from the external environment. Specifically, both sides of the first guide section 111 in the width direction are formed as inclined guiding slopes 1111, which facilitates both the concentration and guidance of the airflow.

[0050] There are many ways in which the aforementioned multiple air guide ribs 110 are connected at one end near the preset axial direction to form the air inlet area 101. Please refer to [link / reference]. Figure 1 and Figure 2 In one embodiment of the application, the air inlet grille 100 further includes a base 130 and an annulus 140 surrounding the base 130. The outer periphery of the base 130 and the inner periphery of the annulus 140 are connected by a plurality of air guide ribs 110. The air inlet area 101 is disposed on the base 130. This arrangement allows the multiple air guide ribs 110 to be connected at their ends near a predetermined axis, and also facilitates the placement of the air inlet area 101. Furthermore, the annulus 140 facilitates the fixing of the ends of the multiple air guide ribs 110 away from the predetermined axis.

[0051] The air guide rib 110 and the base 130, as well as the air guide rib 110 and the ring 140, can all be integrally formed. The air guide rib 110 and the base 130, as well as the air guide rib 110 and the ring 140, can also be fixed by bonding, ultrasonic welding, or other fixed connection methods, or by snap-fit, snap-fit, magnetic connection, or other detachable connection methods. No specific limitation is made here.

[0052] In other embodiments, the base 130 and the ring 140 may not be provided. Instead, multiple air guide ribs 110 are connected and surrounded at one end near the preset axis to form an air inlet. The ends of the multiple air guide ribs 110 away from the preset axis are directly connected to the interior of the corresponding position on the fan 1000.

[0053] To further reduce vortices in the leeward side of the air intake grille 100, please refer to... Figure 5 and Figure 6 In one embodiment of the application, two adjacent air guide ribs 110 are connected on the side near the preset axial direction to form a guide slope 1101. The guide slope 1101 is inclined outward from the windward side of the air guide rib 110 to the leeward side of the air guide rib 110. This arrangement makes the guide interval formed by multiple guide slopes 1101 funnel-shaped, with the larger end located on the side of the guide interval away from the air inlet area 101. The guide interval can guide a portion of the airflow flowing out of the air inlet area 101, making the airflow more dispersed, and thus further reducing the vortex in the middle of the leeward side of the air inlet grille 100. Specifically, the guide slope 1101 is connected to the air outlet side of the base 130 at an obtuse angle.

[0054] Please see Figure 2 In one embodiment of the application, the depth of the flow guiding structure 120 gradually decreases from the side close to the preset axis to the side away from the preset axis. The depth refers to the length of the flow guiding structure 120 in the direction from the windward side to the leeward side of the wind guide rib 110. This configuration makes the bottom wall of the flow guiding structure 120 form an inclined guide surface 121. After the airflow flows into the flow guiding structure 120, it can be gradually dispersed under the action of the guide surface 121, which is more conducive to dispersing the airflow flowing into the flow guiding structure 120.

[0055] Please see Figure 7 This application also provides a fan 1000, which includes an air inlet grille 100 and a fan body 200 as described above. The air inlet grille 100 is disposed on the fan body 200. The air inlet grille 100 and the fan body 200 can be fixed together by means of integral molding, fixed connection or detachable connection in the above embodiments, which will not be described in detail here.

[0056] By way of example and not limitation, fan 1000 can be any of the following: a fan with a handle, a neck fan, a folding fan, a sliding fan, a telescopic fan, a desktop fan, a table fan, or a bladeless fan. The specific structure of the air intake grille 100 is as described in the above embodiments. Since fan 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0057] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. An air intake grille (100), characterized in that, The air inlet grille (100) includes a plurality of air guide ribs (110), which are arranged radially around a preset axis. Adjacent air guide ribs (110) are spaced apart, and the ends of the plurality of air guide ribs (110) near the preset axis are connected to form an air inlet area (101). A flow guiding structure (120) is provided on the leeward side of the air guide ribs (110), and the extension direction of the flow guiding structure (120) intersects with the extension direction of the air inlet area (101).

2. The air intake grille (100) according to claim 1, characterized in that, The wind guide rib (110) has a flow guide groove extending along its extension direction on its leeward side, and the flow guide groove is formed as the flow guide structure (120).

3. The air intake grille (100) according to claim 1, characterized in that, The airflow guiding structure (120) extends from the side of the airflow guide rib (110) close to the preset axis to the side of the airflow guide rib (110) away from the preset axis.

4. The air intake grille (100) according to claim 1, characterized in that, The air inlet grille (100) also includes a base (130) and an annulus (140) surrounding the base (130). The outer periphery of the base (130) and the inner periphery of the annulus (140) are connected by a plurality of air guide ribs (110). The air inlet area (101) is located on the base (130).

5. The air intake grille (100) according to claim 1, characterized in that, The air guide rib (110) includes a first guide section (111) and a second guide section (112) connected sequentially from its windward side to its leeward side, wherein the width of the second guide section (112) is smaller than the width of the first guide section (111).

6. The air intake grille (100) according to claim 5, characterized in that, The width of the second guide section (112) is gradually reduced from the first guide section (111) to the second guide section (112).

7. The air intake grille (100) according to claim 1, characterized in that, Two adjacent air guide ribs (110) are connected on the side near the preset axis and form a flow guide slope (1101). The flow guide slope (1101) is inclined outward from the windward side of the air guide rib (110) to the leeward side of the air guide rib (110).

8. The air intake grille (100) according to any one of claims 1 to 7, characterized in that, The depth of the flow guiding structure (120) gradually decreases from the side closest to the preset axis to the side furthest from the preset axis.

9. The air intake grille (100) according to any one of claims 1 to 7, characterized in that, The air inlet area (101) is an air inlet that runs through the entire area.

10. A fan (1000), characterized in that, The fan (1000) includes an air intake grille (100) as described in any one of claims 1 to 9 and a fan body (200), wherein the air intake grille (100) is disposed on the fan body (200).

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