Air outlet mesh enclosure and air conditioning equipment with same

Abstract

The invention discloses an air outlet mesh enclosure and air conditioning equipment with the air outlet mesh enclosure. The air outlet mesh enclosure comprises a frame and first air guide ribs, and a mounting space is defined in the frame; the first air guide ribs are located in the installation space and extend in the radial direction of the frame. The first air guide rib is provided with a first position, a second position and a third position which are sequentially arranged at intervals in the radial direction, and the included angle between the first connecting line of the first air guide rib at the first position and the axial direction of the frame is alpha 1. The included angle between the first connecting line of the first air guide rib at the second position and the axial direction of the frame is alpha 2, the included angle between the first connecting line of the first air guide rib at the third position and the axial direction of the frame is alpha 3, and alpha 2 is smaller than alpha 1 and alpha 2 is smaller than alpha 3. According to the designed air outlet mesh enclosure, the section shapes of the first air guide ribs at different radial positions and the included angle between the first connecting line and the axial direction of the frame are designed, air outlet flow interference can be restrained, and aerodynamic noise is weakened.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning equipment, in particular to an air outlet mesh cover and air conditioning equipment having the same. Background Art

[0002] In related technologies, air conditioning equipment is generally provided with a wind wheel, and the air outlet mesh cover is located downstream of the wind wheel in the air flow direction, that is, the air outlet mesh cover is generally set at the outflow to prevent outside people or objects from contacting the structure inside the air conditioning equipment.

[0003] In order to prevent the structure of the air outlet grille from interfering with the air outlet, some existing technologies have proposed an air outlet grille structure, which is designed to suppress the interference of the air outlet flow of the air outlet grille by limiting the pressure surface angle and the suction surface angle of the radial ribs of the air outlet grille. However, when the wind wheel drives the airflow, the velocity direction of the airflow intersects with the surface of the radial ribs, causing the radial ribs to affect the air outlet, resulting in flow separation and large aerodynamic noise, which limits the optimization of the air outlet grille. In other existing technologies, the radial ribs of the air outlet grille are designed to have a shape with a gradually changing angle in the extension direction. However, since the air outlet requirements at different radial positions of the air outlet grille do not change linearly, this structure cannot adapt to the air outlet requirements at different radial positions of the air outlet grille, and there is still flow separation and large aerodynamic noise. This design cannot adapt to the incoming flow, and the optimization of the air outlet grille is limited. Summary of the Invention

[0004] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide an air outlet grille. The air outlet grille designed in accordance with the present invention suppresses air flow disturbances and reduces aerodynamic noise by designing the cross-sectional shape of the first air guide ribs at different radial positions and the angle between the first connecting line and the frame axis.

[0005] The present invention also provides an air conditioning device having the above-mentioned air outlet mesh cover.

[0006] According to the present invention, the air outlet mesh cover includes: a frame, an installation space is defined inside the frame; a first air guide rib, the first air guide rib is located in the installation space and extends radially along the frame; wherein the cross section of the first air guide rib in the extension direction is a first cross section, the line connecting the points at which the air outlet end and the windward end of the first air guide rib on the first cross section are farthest from each other is a first line, and the angle between the first line and the axial direction of the frame is α; the first air guide rib has a first position, a second position and a third position arranged in sequence and spaced apart in the radial direction, the angle between the first line and the axial direction of the frame at the first position of the first air guide rib is α1, the angle between the first line and the axial direction of the frame at the second position of the first air guide rib is α2, and the angle between the first line and the axial direction of the frame at the third position of the first air guide rib is α3, satisfying: α2<α1, and α2<α3.

[0007] According to the air outlet mesh cover of the present invention, the shape of the first air guide rib can be optimized by limiting the radial angle change of the first air guide rib, so that the first air guide rib can adapt to the air outlet requirements of different radial positions of the air outlet mesh cover, making the first air guide rib more adaptable to the incoming flow, and being able to suppress the flow separation of the air flow through the air outlet mesh cover, thereby reducing the aerodynamic noise caused by the air flow through the air outlet mesh cover, achieving noise reduction processing for the air conditioning equipment, and improving the user experience.

[0008] According to some embodiments of the present invention, the first position is located radially inward of the third position, satisfying: α1<α3.

[0009] According to some embodiments of the present invention, the following conditions are met: the value range of α1 is 21° to 25°, the value range of α2 is 16° to 20°, and the value range of α3 is 26° to 30°.

[0010] According to some embodiments of the present invention, the first wind guide rib includes a plurality of rib sections arranged in sequence in the radial direction, and the angle α between the first connecting line at any two positions in the radial direction of each rib section and the axial direction of the frame is the same, and the angle α between the first connecting line of at least two sections of the rib section and the axial direction of the frame is different.

[0011] According to some embodiments of the present invention, angles α between the first connecting line of two radially adjacent rib sections and the axial direction of the frame are different.

[0012] According to some embodiments of the present invention, the rib structure is composed of at least three sections, and from the radial inner side to the radial outer side are the first rib, the second rib and the third rib, respectively. The first position is located at the first rib, the second position is located at the second rib, and the third position is located at the third rib.

[0013] According to some embodiments of the present invention, the first wind guide rib also includes a first transition section, the first transition section is arranged between the first rib and the second rib, and the angle α between the first connecting line of the first transition section and the axial direction of the frame gradually decreases in the radial direction; and / or the first wind guide rib also includes a second transition section, the second transition section is arranged between the second rib and the third rib, and the angle α between the first connecting line of the second transition section and the axial direction of the frame gradually increases in the radial direction.

[0014] According to some embodiments of the present invention, the frame is constructed as an annular frame or a rectangular frame, the radially outer end of the first air guide rib is suitable for connection to the frame, and the radial distance between the first air guide rib and the axis of the frame at any radial position is r; wherein the radius of the annular frame is R, and the angle α between the first connecting line at any radial position of the first air guide rib and the axial direction of the frame satisfies: Or the radius of the inscribed circle of the rectangular frame is R, the radius of the circumscribed circle is R0, and the angle α between the first connecting line at any radial position of the first air guide rib and the axial direction of the frame satisfies:

[0015]

[0016] According to some embodiments of the present invention, the air outlet mesh cover further includes: a second air guide rib, the second air guide rib being located in the installation space and being constructed as a ring coaxial with the frame, and the second air guide rib being located between two radially adjacent sections of the ribs, and the radially inner side wall and the radially outer side wall of the second air guide rib being respectively connected to the two radially adjacent sections of the ribs.

[0017] According to some embodiments of the present invention, the second wind guide ribs are constructed to be multiple and spaced apart in the radial direction and have different inner diameters; at least one of the second wind guide ribs is respectively connected to two sections of the ribs having different axial angles α between the first connecting line and the frame; and / or at least one of the second wind guide ribs is respectively connected to two sections of the ribs having the same axial angle α between the first connecting line and the frame.

[0018] According to some embodiments of the present invention, the cross-section of the second air guide rib in the extension direction is a second cross-section, the line connecting the points at which the air outlet end and the windward end of the second air guide rib on the second cross-section are farthest from each other is a second line, and the angle between the second line and the axial direction of the frame is β, and the value range of β is 0° to 5°.

[0019] According to some embodiments of the present invention, in the second cross section, the width of the second wind guiding rib gradually decreases in the direction from the windward end to the wind outlet end.

[0020] According to some embodiments of the present invention, the first air guide ribs are configured to be a plurality of ribs spaced apart in the circumferential direction of the frame.

[0021] An air conditioning apparatus according to another embodiment of the present invention will be briefly described below.

[0022] The air conditioning device according to the present invention includes the air outlet grille described in any of the above embodiments. Since the air conditioning device according to the present invention is provided with the air outlet grille according to the above embodiments, the air conditioning device provides a better user experience.

[0023] To sum up, according to the air outlet mesh cover of the present invention, the cross-sectional shape of the first air guide rib at different radial positions and the angle between the first connecting line and the axial direction of the frame are designed, so that the shape of the first air guide rib can be optimized, so that the first air guide rib can adapt to the air outlet requirements at different radial positions of the air outlet mesh cover, and the first air guide rib can be more adapted to the incoming flow, and can suppress the flow separation of the airflow through the air outlet mesh cover, thereby reducing the aerodynamic noise caused by the airflow through the air outlet mesh cover, realizing noise reduction processing of the air conditioning equipment, and improving the user experience.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0026] Figure 1 Schematic diagram of the rectangular frame air outlet grille structure according to some embodiments of the present invention.

[0027] Figure 2 Schematic diagram of the air outlet grille structure of the annular frame according to other embodiments of the present invention.

[0028] Figure 3 3 is a schematic diagram of a first cross-section of a first air guide rib according to an embodiment of the present invention.

[0029] Figure 4 3 is a schematic diagram of a second cross section of a second air guide rib according to an embodiment of the present invention.

[0030] Figure 5 2 is a distribution diagram of the angle θ2 in the radial direction according to an embodiment of the present invention.

[0031] Reference numerals:

[0032] 1. Air outlet grille;

[0033] 10. Frame; 20. First air guide rib; 30. Second air guide rib; 101. Air outlet; 102. Windward end; S1. First cross section; L1. First connecting line; S2. Second cross section; L2. Second connecting line. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 therefore should not be understood as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections, or communication; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In related technologies, air conditioning equipment is generally provided with a wind wheel, and the air outlet mesh cover is located downstream of the wind wheel in the air flow direction, that is, the air outlet mesh cover is generally set at the outflow to prevent outside people or objects from contacting the structure inside the air conditioning equipment.

[0040] In order to prevent the structure of the air outlet grille from interfering with the air outlet, some existing technologies have proposed an air outlet grille structure, which is designed to suppress the interference of the air outlet flow of the air outlet grille by limiting the pressure surface angle and the suction surface angle of the radial ribs of the air outlet grille. However, when the wind wheel drives the airflow, the velocity direction of the airflow intersects with the surface of the radial ribs, causing the radial ribs to affect the air outlet, resulting in flow separation and large aerodynamic noise, which limits the optimization of the air outlet grille. In other existing technologies, the radial ribs of the air outlet grille are designed to have a shape with a gradually changing angle in the extension direction. However, since the air outlet requirements at different radial positions of the air outlet grille do not change linearly, this structure cannot adapt to the air outlet requirements at different radial positions of the air outlet grille, and there is still flow separation and large aerodynamic noise. This design cannot adapt to the incoming flow, and the optimization of the air outlet grille is limited.

[0041] Reference below Figure 1-Figure 4 An air outlet grille 1 according to an embodiment of the present invention is described.

[0042] like Figure 1-Figure 3As shown, the air outlet mesh cover 1 according to the present invention includes: a frame 10 and a first air guide rib 20, and the frame 10 defines an installation space inside; the first air guide rib 20 is located in the installation space and extends radially along the frame 10; wherein the cross section of the first air guide rib 20 in the extension direction is a first cross section S1, and the line connecting the points at which the air outlet end 101 and the windward end 102 of the first air guide rib 20 are farthest from each other on the first cross section S1 is a first line L1, and the angle between the first line L1 and the axial direction of the frame 10 is α; the first air guide rib 20 has a first position, a second position and a third position arranged in sequence and spaced apart in the radial direction, and the angle between the first line L1 and the axial direction of the frame 10 at the first position of the first air guide rib 20 is α1, the angle between the first line L1 and the axial direction of the frame 10 at the second position of the first air guide rib 20 is α2, and the angle between the first line L1 and the axial direction of the frame 10 at the third position of the first air guide rib 20 is α3, satisfying: α2<

[0043] α1, and α2<α3.

[0044] Specifically, the air outlet grille 1 can be used in an air conditioning device. In some specific embodiments, the air conditioning device can be an outdoor air conditioner. The air outlet grille 1 is disposed at the air outlet of the outdoor air conditioner, and the windward end 102 of the air guide ribs of the air outlet grille 1 is located upstream in the airflow direction, while the air outlet end 101 of the air guide ribs is located downstream in the airflow direction. A wind wheel is disposed within the air conditioning device. The rotation axis of the wind wheel blades can be used as the axial direction of the air outlet grille 1, and the radial and circumferential directions of the air outlet grille 1 can be determined.

[0045] Here, as Figure 1 、 Figure 2 As shown, the air outlet grille 1 has a first air guide rib 20, which extends radially along the frame 10. Figure 3 , Figure 3 The cross-section of the first air guide rib 20 in its extension direction, i.e., the first cross-section S1, has a first position, a second position, and a third position in its extension direction. The first connecting line L1 corresponding to the first position, the second position, and the third position has different angles α with the axial direction of the frame 10. Furthermore, the angle α2 between the first connecting line L1 and the axial direction of the frame 10 corresponding to the second position between the first position and the third position is smaller than the angles α1 and α3 corresponding to the first and third positions. In other words, the angle α of the first air guide rib 20 varies in the radial direction. By defining the angle α at at least three locations in the extension direction of the first air guide rib 20, the cross-sectional shape of the first air guide rib 20 at different radial positions is defined, allowing the first air guide rib 20 to better adapt to the incoming flow.

[0046] According to the air outlet mesh cover 1 of the present invention, the shape of the first air guide rib 20 can be optimized by limiting the radial angle change of the first air guide rib 20, so that the first air guide rib 20 can adapt to the air outlet requirements of different radial positions of the air outlet mesh cover 1, making the first air guide rib 20 more adaptable to the incoming flow, and can suppress the flow separation of the air flow through the air outlet mesh cover 1, thereby reducing the aerodynamic noise caused by the air flow through the air outlet mesh cover 1, achieving noise reduction processing of the air conditioning equipment, and improving the user experience.

[0047] Furthermore, the first air guide rib 20 extending in the radial direction of the frame 10 may mean that the extending direction of the first air guide rib 20 is consistent with the radial direction of the frame 10, or may mean that the extending direction of the first air guide rib 20 may intersect with the radial direction of the frame 10, and the first air guide rib 20 has a portion extending in the radial direction of the frame 10, which can be referred to Figure 1 、 Figure 2 The first air guide rib 20 extends radially along the frame 10 and is tilted circumferentially. The extension direction of the first air guide rib 20 can be designed according to actual needs and is not limited here.

[0048] It is worth mentioning that the air outlet mesh cover 1 according to the present invention is mainly used for the outdoor unit of the air conditioner. The outdoor unit of the air conditioner adopts an axial flow fan wheel. The air outlet velocity V at the air outlet of the outdoor unit of the air conditioner can be decomposed in the axial, radial and circumferential directions of the fan wheel blades, and decomposed into axial velocity V1, radial velocity V2, and circumferential velocity V3. At the same time, the radial and axial angles of the air outlet velocity V are defined as θ1, and the tangential and axial angles of the air outlet velocity V are defined as θ2.

[0049] Since the direction of the axial flow wind wheel wind speed V may be different in the radial direction of the wind wheel blade, θ1 and θ2 will also change with time and radial position. According to simulation and experimental research, θ2 is larger than θ1, and according to fluid simulation tests, you can refer to Figure 5 The tangential and axial angle θ2 of the air flow velocity V at the air outlet of the air conditioner outdoor unit has a high correlation with the radial distribution of the air outlet mesh cover 1. Based on this, the shape of the first air guide rib 20 on the air outlet mesh cover 1 can be designed so that the first air guide rib 20 can adapt to the air outlet requirements of different radial positions of the air outlet mesh cover 1.

[0050] Specifically, refer to Figure 5 , θ2 changes regularly with the increase of radius, and the shape of the first air guide rib 20 and the angle α between the first connecting line L1 and the axial direction should change accordingly to adapt to the airflow angle that changes with the radial distribution. The specific positions of the first position, the second position and the third position can be selected according to the change pattern of θ2. Figure 5In the embodiment, θ2 first remains stable within a radius range and is approximately constant. The first air guide rib 20 can be taken as a first position within the radius range. At the first position, the air velocity V at the air outlet gradually increases, and the angle α1 between the first connecting line L1 of the first air guide rib 20 at the first position and the axial direction is also larger, so as to guide more airflow to diffuse radially outward and ensure a larger air outlet range. As the radius increases, θ2 gradually decreases. The first air guide rib 20 can be taken as a second position within the radius range. At the second position, the air velocity V at the air outlet still increases. The angle α2 between the first connecting line L1 of the first air guide rib 20 at the second position and the axial direction can also be reduced according to actual conditions to prevent the first air guide rib 20 from blocking the airflow, thereby guiding more airflow to diffuse forward along the axial direction and ensuring air volume. As the radius continues to increase, θ2 gradually increases, and the first air guide rib 20 can be located at a point within this radius as the third position. At the third position, the air velocity V at the air outlet decreases, and the angle α3 between the first connecting line L1 of the first air guide rib 20 at the third position and the axial direction is larger, thereby guiding more airflow to diffuse radially outward and ensuring a larger air outlet range. Of course, the selection of the first position, the second position, and the third position is not limited to the above.

[0051] According to the changing law of θ2, the shape of the first air guide rib 20 and the angle α between the first connecting line L1 of the first air guide rib 20 and the axial direction are optimized so that the first air guide rib 20 can adapt to the airflow angle that changes with the radial distribution, thereby suppressing the air flow interference and reducing the aerodynamic noise.

[0052] According to some embodiments of the present invention, the first position is located radially inside the third position, satisfying: α1<α3. Specifically, the first position, the second position, and the third position are sequentially arranged from the radial inside to the radial outside of the air outlet mesh cover 1. As described above, the air outlet velocity V at the air outlet gradually increases at the first position and gradually decreases at the third position. The relationship between the angle α between the first connecting line L1 at the first position and the third position and the axial direction is designed to be α1<α3, so as to guide more airflow to diffuse radially outward, ensure that the air outlet mesh cover 1 has a larger air outlet range, thereby adapting to the air outlet requirements of different radial positions of the air outlet mesh cover 1, and suppressing the flow separation of the airflow passing through the air outlet mesh cover 1.

[0053] According to some embodiments of the present invention, the following conditions are met: α1 is in the range of 21° to 25°, α2 is in the range of 16° to 20°, and α3 is in the range of 26° to 30°. This allows the first air guide ribs 20 to better adapt to the air outlet requirements at different radial positions of the air outlet grille 1, allowing the first air guide ribs 20 to adapt to the incoming air flow at different radial positions, thereby better suppressing air flow interference and reducing aerodynamic noise. In some specific embodiments, α1 is 24°, α2 is 18°, and α3 is 26°.

[0054] In some embodiments, the angle θ between the first connecting line L1 of the first air guide rib 20 and the axial direction of the frame 10 gradually changes in the radial direction. In this case, the first air guide rib 20 as a whole resembles a spiral. In other embodiments, the first air guide rib 20 includes multiple rib sections arranged sequentially in the radial direction. The angle θ between the first connecting line L1 of each rib section and the axial direction of the frame 10 gradually changes in the radial direction. In this case, each rib section resembles a spiral, and the first air guide rib 20 is composed of multiple spiral ribs connected in sequence.

[0055] And in Figure 1-Figure 2 In the illustrated embodiment, the first air guide rib 20 comprises multiple radially arranged rib segments. The first line L1 connecting any two radial positions of each rib segment forms the same angle α with the axial direction of the frame 10. The first line L1 connecting at least two rib segments forms different angles α with the axial direction of the frame 10. That is, a single rib segment uses a single angle α, while different rib segments may use different angles α. Furthermore, at least two rib segments have different angles α, with the first or third position located on one rib segment and the second position located on another rib segment, and the relationship α2 < α1 or α2 < α3 is satisfied.

[0056] Specifically, two adjacent rib sections can be connected directly or through other structures, and can be arranged radially opposite each other or staggered in the radial direction. Each rib section can also include multiple small ribs, and the multiple small ribs in each rib section have the same angle α. Adjacent small ribs can also be connected directly or through other structures, and can be arranged radially opposite each other or staggered in the radial direction. The design can be based on actual needs, and the specific structure of the ribs and the arrangement of adjacent ribs are not limited here.

[0057] According to some embodiments of the present invention, the angle α between the first connecting line L1 of two radially adjacent rib segments and the axial direction of the frame 10 is different. In other words, the angle α between the two adjacent rib segments is different. In this case, the first position can be located on one rib segment, the second position on the other rib segment, and α2 < α1 is satisfied. Alternatively, the third position can be located on one rib segment, the second position on the other rib segment, and α2 < α3 is satisfied. The different angles α between the two adjacent rib segments enable the first air guide rib 20 to adapt to airflow angles that vary with radial distribution, thereby suppressing airflow interference and reducing aerodynamic noise.

[0058] According to some embodiments of the present invention, the rib structure is composed of at least three sections, and the first rib, the second rib, and the third rib are arranged in sequence from the radial inside to the radial outside. The first position is located at the first rib, the second position is located at the second rib, and the third position is located at the third rib. Specifically, in the direction from the radial inside to the radial outside of the frame 10, the first rib, the second rib, and the third rib are sequentially arranged and connected to form the first wind guide rib 20. As mentioned above, the angles α between the two adjacent sections of the ribs are different. The first position is located at the first rib, the second position is located at the second rib, and the third position is located at the third rib, so as to satisfy α2<α1 and α2<α3. You can refer to Figure 1 、 Figure 2 Each section of ribs includes multiple small ribs, and the angles α of the multiple small ribs in each section of ribs are the same. Adjacent small ribs can be directly connected or connected through other structures, and two adjacent small ribs can be arranged opposite each other in the radial direction or staggered in the radial direction.

[0059] According to some embodiments of the present invention, the first air guide rib 20 further includes a first transition section, the first transition section is arranged between the first rib and the second rib, and the angle α between the first connecting line L1 of the first transition section and the axial direction of the frame 10 gradually decreases in the radial direction; and / or the first air guide rib 20 further includes a second transition section, the second transition section is arranged between the second rib and the third rib, and the angle α between the first connecting line L1 of the second transition section and the axial direction of the frame 10 gradually increases in the radial direction. Specifically, two adjacent sections of ribs can be connected by a transition section, and the angle α between the first connecting line L1 of the transition section and the axial direction of the frame 10 gradually changes in the radial direction. In this case, the transition section is similar to a spiral shape, and the transition section is constructed as at least one for transitionally connecting at least two adjacent ribs. The transition section can also guide the direction of airflow. The provision of the transition section can reduce the resistance to airflow at the connection between the two adjacent sections of ribs.

[0060] For example, a first transition section can be designed between the first rib and the second rib. Since the angle α2 of the second rib is greater than the angle α1 of the first rib, the first transition section connected between the first rib and the second rib needs to have a structural feature in which the angle α gradually decreases in the radial direction, so as to transitionally connect the first rib and the second rib; a second transition section can also be designed between the second rib and the third rib. Since the angle α2 of the second rib is less than the angle α3 of the third rib, the second transition section connected between the second rib and the third rib needs to have a structural feature in which the angle α gradually increases in the radial direction, so as to transitionally connect the second rib and the third rib.

[0061] According to some embodiments of the present invention, the frame 10 is constructed as an annular frame or a rectangular frame, the radially outer end of the first air guide rib 20 is suitable for connection with the frame 10, and the radial distance between any position of the first air guide rib 20 and the axis of the frame 10 is r; wherein, Figure 2 As shown, the radius of the annular frame is R, and the angle α between the first connecting line L1 at any radial position of the first air guide rib 20 and the axial direction of the frame 10 satisfies: or as Figure 1 As shown, the radius of the inscribed circle of the rectangular frame is R, the radius of the circumscribed circle is R0, and the angle α between the first connecting line L1 at any radial position of the first air guide rib 20 and the axial direction of the frame 10 satisfies:

[0062] Specifically, if Figure 1 、 Figure 2 As shown, the frame 10 defines an installation space, and the first air guide ribs 20 are located in the installation space, with radially outer ends connected to the frame 10. Generally speaking, the radius of the axial flow impeller is consistent with the inscribed circle of the frame 10. Since the shape of the frame 10 may vary, when the frame 10 is annular, the inner diameter of the annular frame is R, and when the frame 10 is rectangular, the radius of the inscribed circle of the rectangular frame is R.

[0063] refer to Figure 5 , the specific positions of the first position, the second position and the third position can be selected according to the change law of θ2, and the ribs of the first air guide rib 20 are divided into multiple regions from the radial inner side to the radial outer side, and region 1 satisfies: 0≤r<0.46R, the first position is located in region 1, and the angle α of the ribs located in region 1 is the same and is α1; region 2 satisfies: 0.46R≤r<0.81R, the second position is located in region 2, and the angle α of the ribs located in region 2 is the same and is α2; region 3 satisfies: 0.81R≤r, and In the annular frame, the maximum radial distance between the first air guide rib 20 and the axis of the frame 10 at any position in the radial direction is the inner diameter R, that is, in the annular frame, region 3 satisfies: 0.81R≤r≤R, while in the rectangular frame, the maximum radial distance between the first air guide rib 20 and the axis of the frame 10 at any position in the radial direction is the circumscribed circle radius R0, that is, in the rectangular frame, region 3 satisfies: 0.81R≤r≤R0. The third position is located in region 3, and the angle α of the ribs located in region 3 is the same and is α3. In the above three regions, the first air guide ribs 20 are designed with different angles α to adapt to the airflow angle of each region, so that the first air guide ribs 20 can adapt to the airflow angle that changes with the radial distribution, thereby suppressing the interference of the wind flow and reducing the aerodynamic noise.

[0064] In general, when the frame 10 is annular, the angle α between the first connecting line L1 at any radial position of the first air guide rib 20 and the axial direction of the frame 10 satisfies: When the frame 10 is rectangular, the angle α between the first connecting line L1 at any radial position of the first air guide rib 20 and the axial direction of the frame 10 satisfies:

[0065]

[0066] According to some embodiments of the present invention, Figure 1-Figure 2 As shown, the air outlet mesh cover 1 also includes a second air guide rib 30. The second air guide rib 30 is located in the installation space and is constructed as a ring coaxial with the frame 10. The second air guide rib 30 is located between two radially adjacent ribs. The radial inner wall and the radial outer wall of the second air guide rib 30 are respectively connected to the two radially adjacent ribs. In other words, the two radially adjacent ribs can be connected by the second air guide rib 30, and the angle α between the two ribs can be the same or different. The second air guide rib 30 can enhance the structural strength of the first air guide rib 20, and the first air guide rib 20 and the second air guide rib 30 together constitute the "skeleton" of the air outlet mesh cover 1, which can play a role in structural support and strengthening the rigidity of the air outlet mesh cover 1, ensuring that the air outlet mesh cover 1 does not deform or vibrate under long-term use and various external forces, and provides safety protection to prevent human bodies or foreign objects from contacting the high-speed rotating wind wheel blades. It can also optimize airflow and reduce noise.

[0067] According to some embodiments of the present invention, Figure 1-Figure 2 As shown, the second air guide ribs 30 are configured as a plurality of radially spaced ribs having different inner diameters. At least one second air guide rib 30 is connected to two rib sections having different angles α between the first connecting line L1 and the axial direction of the frame 10. Furthermore, at least one second air guide rib 30 is connected to two rib sections having the same angle α between the first connecting line L1 and the axial direction of the frame 10. Specifically, two adjacent rib sections can be connected by the second air guide rib 30, and the angle α between the two adjacent rib sections can be the same or different.

[0068] As mentioned above, the angle α between the first rib and the second rib is different, and the second wind guide rib 30 can be connected to the first rib and the second rib respectively. The first rib is composed of multiple small ribs with the same angle α, and the second wind guide rib 30 can also be connected to two adjacent small ribs in the first rib. Figure 1 and Figure 2 In the illustrated embodiment, a second wind guide rib 30 with a smaller inner diameter connects the first rib and the second rib, another second wind guide rib 30 with a larger inner diameter connects the second rib and the third rib, and multiple small ribs in the first rib are connected through multiple second wind guide ribs 30 with different inner diameters. The connection relationship between the second rib and the third rib and the second wind guide rib 30 is the same as the first rib, and will not be repeated here.

[0069] According to some embodiments of the present invention, Figure 4As shown, the cross-section of the second air guide rib 30 in the extension direction is the second cross-section S2, and the line connecting the points at which the air outlet end 101 and the windward end 102 of the second air guide rib 30 on the second cross-section S2 are farthest from each other is the second line L2. The angle between the second line L2 and the axial direction of the frame 10 is β, and the value range of β is 0° to 5°. Here, the second air guide rib 30 can form a certain angle with the rotation axis of the wind wheel blade on the second cross section S2, so that the second air guide rib 30 can be more adaptable to the incoming flow. Specifically, the angle β between the second line L2 and the axial direction of the frame 10 is β, and the value range of β is 0°~5°. By limiting the angle β between the second line L2 of the second air guide rib 30 and the axial direction of the frame 10, the second air guide rib 30 can adapt to the air outlet requirements of the air outlet grille 1, making the second air guide rib 30 more adaptable to the incoming flow, and can suppress the flow separation of the air flow through the air outlet grille 1, thereby reducing the aerodynamic noise caused by the air flow through the air outlet grille 1, realizing noise reduction processing of the air conditioning equipment, and improving the user experience.

[0070] According to some embodiments of the present invention, Figure 4 As shown, in the second cross-section S2, the second air guide rib 30 gradually decreases in width from the windward end 102 to the air outlet end 101. Specifically, in the direction of airflow, the second air guide rib 30 should be streamlined, with a thicker front and a thinner back, and its included angle β should cater to the airflow angle in the area. The second air guide rib 30 is wider at the windward end 102 to accommodate airflow at different inflow angles, and is narrower at the air outlet end 101 to reduce vortices formed by flow separation there.

[0071] In some embodiments, the second wind guide ribs 30 are constructed to be multiple and spaced apart in the radial direction. The shape of the second wind guide ribs 30 may refer to the angle β of the second wind guide ribs 30 or the width in the direction from the windward end 102 to the wind outlet end 101. The shapes of different second wind guide ribs 30 can be adjusted according to the incoming flow angle at the corresponding radius.

[0072] According to some embodiments of the present invention, Figure 1-Figure 2 As shown, the first wind guide ribs 20 are constructed to be multiple and spaced apart in the circumferential direction of the frame 10, and the distance between two adjacent first wind guide ribs 20 gradually increases from the radial inner side to the radial outer side. Furthermore, the first wind guide ribs 20 extend radially along the frame 10 and are arranged circumferentially at an angle to form radial ribs extending from the radial inner side to the radial outer side.

[0073] In some embodiments, the air outlet grille 1 is provided with a first air guide rib 20 and a second air guide rib 30, and the first air guide rib 20 is designed as a radial rib radiating from the projection of the wind wheel axis to the surrounding area, and the second air guide rib 30 is designed as an annular rib coaxial with the frame 10. The air outlet grille 1 designed according to the present invention can minimize the density of the radial ribs while complying with safety regulations, thereby reducing the obstruction of the radial ribs to the circumferential flow of the outlet velocity. Furthermore, the safety clearance of the air outlet grille 1 is controlled by a relatively dense annular rib distributed in an annular pattern around the wind wheel axis on the air outlet grille 1.

[0074] The air conditioning apparatus according to the present invention will be briefly described below.

[0075] The air conditioning device according to the present invention includes the air outlet mesh cover 1 described in any of the above embodiments. Since the air conditioning device according to the present invention is provided with the air outlet mesh cover 1 according to the above embodiments, the air conditioning device provides a better user experience.

[0076] To sum up, according to the air outlet mesh cover 1 of the present invention, the cross-sectional shape of the first air guide rib 20 at different radial positions and the angle between the first connecting line L1 and the axial direction of the frame 10 are designed, so that the shape of the first air guide rib 20 can be optimized, so that the first air guide rib 20 can adapt to the air outlet requirements at different radial positions of the air outlet mesh cover 1, and the first air guide rib 20 can be more adapted to the incoming flow, and can suppress the flow separation of the airflow through the air outlet mesh cover 1, thereby reducing the aerodynamic noise caused by the airflow through the air outlet mesh cover 1, realizing noise reduction processing of the air conditioning equipment, and improving the user experience.

[0077] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations 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 any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0078] While embodiments of the present invention have been shown and described above, alterations, modifications, substitutions, and variations of the embodiments described above are possible.

Claims

1. An air outlet mesh cover, characterized in that: include: a frame, wherein an installation space is defined inside the frame; a first air guide rib, the first air guide rib being located in the installation space and extending in a radial direction of the frame; in A cross section of the first air guide rib in the extension direction is a first cross section, a line connecting the points on the first cross section at which the air outlet end and the windward end of the first air guide rib are farthest from each other is a first connecting line, and an angle α is included between the first connecting line and the axial direction of the frame; The first wind guide rib has a first position, a second position, and a third position arranged sequentially and spaced apart in the radial direction. At the first position, the angle between the first connecting line and the axial direction of the frame is α1. At the second position, the angle between the first connecting line and the axial direction of the frame is α2. At the third position, the angle between the first connecting line and the axial direction of the frame is α3, satisfying the following conditions: α2<α1, and α2<α3.

2. The air outlet grille according to claim 1, wherein: The first position is located radially inward of the third position, satisfying: α1<α3.

3. The air outlet grille according to claim 2, wherein: Satisfies: the value range of α1 is 21°~25°, the value range of α2 is 16°~20°, and the value range of α3 is 26°~30°.

4. The air outlet grille according to claim 1, wherein: The first wind guide rib includes multiple sections of ribs arranged in sequence in the radial direction, and the first connecting line at any two positions in the radial direction of each section of the rib has the same angle α with the axial direction of the frame, and the first connecting line of at least two sections of the rib has different angles α with the axial direction of the frame.

5. The air outlet grille according to claim 4, characterized in that: The angles α between the first connecting line of two radially adjacent rib sections and the axial direction of the frame are different.

6. The air outlet grille according to claim 5, characterized in that: The rib structure is composed of at least three sections, and from the radial inner side to the radial outer side are the first rib, the second rib and the third rib, respectively. The first position is located at the first rib, the second position is located at the second rib, and the third position is located at the third rib.

7. The air outlet grille according to claim 6, characterized in that: The first wind guide rib further includes a first transition section, the first transition section is arranged between the first rib and the second rib, and the angle α between the first connecting line of the first transition section and the axial direction of the frame gradually decreases in the radial direction; and / or The first wind guide rib further includes a second transition section, which is arranged between the second rib and the third rib, and the angle α between the first connecting line of the second transition section and the axial direction of the frame gradually increases in the radial direction.

8. The air outlet grille according to claim 4, characterized in that: The frame is constructed as an annular frame or a rectangular frame, the radially outer end of the first air guide rib is suitable for connection with the frame, and the radial distance between any position of the first air guide rib and the axis of the frame is r; in The radius of the annular frame is R, and the angle α between the first connecting line at any radial position of the first air guide rib and the axial direction of the frame satisfies: or The radius of the inscribed circle of the rectangular frame is R, the radius of the circumscribed circle is R0, and the angle α between the first connecting line at any radial position of the first air guide rib and the axial direction of the frame satisfies:

9. The air outlet grille according to claim 4, characterized in that: Also includes: The second wind guide rib is located in the installation space and is constructed as a ring coaxial with the frame, and the second wind guide rib is located between two radially adjacent sections of the ribs, and the radial inner wall and the radial outer wall of the second wind guide rib are respectively connected to the two radially adjacent sections of the ribs.

10. The air outlet grille according to claim 9, characterized in that: The second air guide ribs are structured as a plurality of ribs spaced apart in the radial direction and having different inner diameters; At least one of the second air guide ribs is respectively connected to two sections of the ribs having different included angles α between the first connecting line and the axial direction of the frame; and / or At least one of the second air guide ribs is respectively connected to two sections of the ribs having the same included angle α between the first connecting line and the axial direction of the frame.

11. The air outlet grille according to claim 9, characterized in that: The cross-section of the second air guide rib in the extension direction is the second cross-section, the line connecting the points at which the air outlet end and the windward end of the second air guide rib on the second cross-section are farthest from each other is the second line, and the angle between the second line and the axial direction of the frame is β, and the value range of β is 0° to 5°.

12. The air outlet grille according to claim 11, characterized in that: In the second cross section, the width of the second wind guiding rib gradually decreases in the direction from the windward end to the wind outlet end.

13. The air outlet grille according to claim 1, wherein: The first air guiding ribs are structured to be a plurality of ribs spaced apart in the circumferential direction of the frame.

14. An air conditioning device, characterized in that: It comprises the air outlet mesh cover according to any one of claims 1-13.

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