Rectifying assembly, fresh air module and air conditioning device

Abstract

The present disclosure relates to the field of air conditioning technology, in particular, to a rectifying assembly, a fresh air module and an air conditioning device. The rectifying assembly comprises a flow guide ring and a rectifying piece. The flow guide ring has a flow guide opening through in a first direction. The rectifying piece is arranged at the flow guide opening and covers the flow guide opening completely. The rectifying piece is configured as a first grid and a second grid formed by ribs. The first grid comprises a plurality of first through holes. The second grid comprises a plurality of second through holes. The flow area of the first through holes is larger than that of the second through holes. The rectifying assembly of the present disclosure can rectify the airflow, reduce noise, and thus improve user experience.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, and more specifically, to a rectifier assembly, a fresh air module, and an air conditioning device. Background Technology

[0002] As users have increasingly higher requirements for their living environment, their focus has shifted from regulating temperature and humidity to pursuing higher air quality. This has led to the development of air purifiers and air conditioning devices with fresh air modules. In these technologies, fresh air modules typically have both fresh air and exhaust functions, resulting in complex air ducts that are prone to turbulence at the fan inlet or within the duct, generating noise and leading to a poor user experience. Utility Model Content

[0003] This disclosure aims to at least partially address one of the technical problems in the related art. To this end, embodiments of this disclosure propose a rectification component that can rectify airflow, reduce noise, and thereby improve the user experience.

[0004] This disclosure also proposes a fresh air module and an air conditioning device.

[0005] The rectifier assembly of this disclosure includes: a flow guide ring having a flow guide opening extending along a first direction; and a rectifier disposed at the flow guide opening and completely covering the flow guide opening. The rectifier is constructed as a first grid and a second grid formed by ribs. The first grid includes a plurality of first through holes, and the second grid includes a plurality of second through holes. The flow area of ​​the first through holes is larger than the flow area of ​​the second through holes.

[0006] The rectifier assembly of this embodiment rectifyes the airflow passing through the guide port by setting a rectifier at the guide port and using multiple first through holes of the first grille and multiple second through holes of the second grille. By setting the flow area of ​​the first through holes to be larger than that of the second through holes, the first grille can reduce airflow attenuation while rectifying the airflow, and the second grille can better rectify the airflow with high turbulence. This ensures that the airflow does not decrease significantly while improving the rectification effect, reducing airflow noise, and thus improving the user experience.

[0007] In some embodiments, the ribs include a plurality of first ribs, a plurality of second ribs, and a partition rib. The plurality of first ribs are interconnected to form a plurality of first through holes, the plurality of second ribs are interconnected to form a plurality of second through holes, and the partition ribs are disposed between the first grid and the second grid.

[0008] In this embodiment, by connecting multiple first ribs, connecting multiple second ribs, and using a separator rib to connect the first and second ribs, the arrangement density of the first and second through holes can be increased while ensuring that the rectifier has sufficient structural strength, thereby improving the rectification effect.

[0009] In some embodiments, on a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille and the projected area of ​​the rectifier is 0.1-0.6.

[0010] In this embodiment, the ratio between the projected area of ​​the second grille orthogonal to the first direction and the projected area of ​​the rectifier orthogonal to the first direction is limited. On the one hand, this avoids the second grille from having too high a proportion, which would lead to excessive wind resistance and airflow loss. On the other hand, it avoids the second grille from having too low a proportion, which would lead to poor rectification effect. By limiting the above ratio, the rectifier can effectively rectify the high-turbulence airflow without losing too much airflow, thereby improving the user experience.

[0011] In some embodiments, the ratio between the flow area of ​​the second through hole and the flow area of ​​the first through hole is 0.2-0.8.

[0012] In this embodiment, by limiting the ratio between the flow area of ​​the second through hole and the flow area of ​​the first through hole, it is ensured that the second through hole can effectively rectify the high turbulence airflow while avoiding excessive airflow attenuation when the airflow passes through the second through hole, thereby reducing noise and achieving a large airflow output from the fresh air module.

[0013] In some embodiments, on a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille and the projected area of ​​the rectifier is 0.2-0.4. This ensures that the rectifier effectively rectifies high-turbulence airflow without losing excessive airflow, further improving the user experience.

[0014] In some embodiments, the ratio between the flow area of ​​the second through-hole and the flow area of ​​the first through-hole is 0.4-0.6. This ensures that the second through-hole can effectively rectify high-turbulence airflow while preventing excessive airflow attenuation as the airflow passes through it, reducing noise while achieving a large airflow output from the fresh air module.

[0015] In some embodiments, on a projection plane orthogonal to the first direction, the outer periphery of at least one of the first through hole and the second through hole is circular, elliptical, or polygonal.

[0016] In this embodiment, by defining the shape of the outer periphery of the first through hole and the second through hole, the rectifier effect can be ensured while increasing the diversity of the rectifier.

[0017] In some embodiments, when the outer periphery of the first through hole and the outer periphery of the second through hole are both polygons, the side length of the first through hole is a, the side length of the second through hole is b, and 0.2≤b / a≤0.8.

[0018] In this embodiment, by limiting the ratio between the side length of the second through hole and the side length of the first through hole, the first through hole with a longer side length is used to rectify the airflow with low turbulence, while the second through hole with a shorter side length is used to rectify the airflow with high turbulence. This ensures that a large volume of airflow passes through while improving the rectification effect, effectively eliminating abnormal airflow noise and reducing the total noise level, thereby improving the user experience.

[0019] In some embodiments, 0.4 ≤ b / a ≤ 0.6. By limiting the above ratio, the side length of the second through hole is prevented from differing too much from that of the first through hole, ensuring rectification effect while improving airflow uniformity.

[0020] In some embodiments, one end of the rib in the first direction is flush with one end of the guide ring.

[0021] In this embodiment, by setting one end of the rib in the first direction to be flush with one end of the guide ring, in other words, one end of the rectifier in the first direction is flush with one end of the guide ring, which facilitates the manufacturing of the rectifier and the guide ring.

[0022] In some embodiments, the dimension of the guide ring in the first direction is c, and the dimension of the rib in the first direction is d, where 0.4 ≤ d / c ≤ 1.

[0023] In this embodiment, by limiting the ratio between the size of the rib in the first direction and the size of the guide ring in the first direction, the guide ring can guide the airflow into the guide port, which in turn facilitates the rectifier to rectify the airflow, thereby breaking the periodic pressure pulsation of the airflow, improving the uniformity of the airflow, reducing airflow noise, and improving comfort.

[0024] In some embodiments, 0.6 ≤ d / c ≤ 0.8.

[0025] In this embodiment, the ratio between the size of the rib in the first direction and the size of the guide ring in the first direction is further limited. On the one hand, this facilitates the guide ring to guide the airflow into the guide port, thereby improving the airflow efficiency. On the other hand, it avoids the size of the rib in the first direction being too large or too small, thereby further improving the rectification effect of the rectifier.

[0026] In some embodiments, the guide ring is integrally formed with the rectifier.

[0027] In this embodiment, by integrally molding the guide ring and the rectifier, the structural strength of the rectifier assembly is improved while the manufacturing cost of the rectifier assembly is reduced.

[0028] The fresh air module of this disclosure includes: a housing; a fan disposed within the housing and having a fan inlet; and a rectifier assembly, which is the rectifier assembly described in the above embodiments, wherein the rectifier assembly is arranged opposite to the fan inlet to rectify the airflow entering the fan.

[0029] The fresh air module of this disclosure, by placing the rectifier component inside the housing and arranging the rectifier component opposite to the fan inlet, facilitates the separation of the airflow entering the fan into multiple small airflows by multiple through holes on the rectifier component, so that the airflow entering the fan flows evenly, reduces airflow noise, and thus improves the user experience.

[0030] In some embodiments, the fan includes a volute and an impeller, the impeller being disposed within the volute, the volute having an opening on one side, and the guide ring being detachably connected to the volute to seal the opening.

[0031] In this embodiment, by detachably placing the guide ring at the opening of the volute, it facilitates the maintenance of the fan and improves the uniformity of the airflow entering the volute, which is beneficial to improving the fan's air delivery efficiency.

[0032] The air conditioning device of this disclosure includes the fresh air module described in the above embodiments.

[0033] The air conditioning device of this disclosure improves the user experience by including the fresh air module of the above embodiments. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a rectifier component according to an embodiment of the present disclosure.

[0035] Figure 2 This is a schematic diagram of the rectifier component from another perspective according to an embodiment of the present disclosure.

[0036] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0037] Figure 4 This is a cross-sectional view of a rectifier assembly according to an embodiment of this disclosure.

[0038] Figure 5 This is a schematic diagram of a fresh air module according to an embodiment of this disclosure.

[0039] Figure 6 This is an internal schematic diagram of the fresh air module according to an embodiment of the present disclosure.

[0040] Figure 7 This is a schematic diagram of a fan according to an embodiment of the present disclosure.

[0041] Figure label:

[0042] Fresh air module 100, housing 10, fan 20, fan inlet 201, volute 202, opening 2021, impeller 203.

[0043] 30 rectifier components, 1 guide ring, 11 guide ports.

[0044] Rectifier 2, first grille 21, first through hole 211, second grille 22, second through hole 221,

[0045] Rib 23, first rib 231, second rib 232, dividing rib 233. Detailed Implementation

[0046] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0047] The following is in conjunction with the appendix Figures 1-4 The rectifier component 30 of the present disclosure will be described in detail.

[0048] The rectifier assembly 30 of this embodiment includes a guide ring 1 and a rectifier 2. The guide ring 1 has a guide port 11 extending in a first direction. The rectifier 2 is disposed at the guide port 11 and completely covers the guide port 11. The rectifier 2 is constructed as a first grille 21 and a second grille 22 formed by ribs 23. The first grille 21 includes a plurality of first through holes 211, and the second grille 22 includes a plurality of second through holes 221. The flow area of ​​the first through holes 211 is larger than the flow area of ​​the second through holes 221.

[0049] The rectifier assembly 30 of this embodiment rectifies the airflow passing through the guide port 11 by setting the rectifier 2 in the guide port 11 and using the multiple first through holes 211 of the first grille 21 and the multiple second through holes 221 of the second grille 22. By setting the flow area of ​​the first through holes 211 to be larger than the flow area of ​​the second through holes 221, the first grille 21 can reduce the airflow attenuation while rectifying the airflow, and the second grille 22 can better rectify the airflow with high turbulence, ensuring that the airflow is not significantly attenuated while improving the rectification effect, reducing airflow noise, and thus improving the user experience.

[0050] The rectifier 2 completely covers the guide port 11, ensuring that the rectifier 2 can effectively guide and rectify the airflow passing through the guide port 11, reduce turbulence, and improve the uniformity of the airflow.

[0051] In this embodiment, a first through-hole 211 and a second through-hole 221 with different flow areas are provided. The first through-hole 211 with a larger flow area is used to rectify the airflow with low turbulence, while the second through-hole 221 with a smaller flow area is used to rectify the airflow with high turbulence. This ensures that a large volume of airflow passes through while improving the rectification effect, effectively eliminating abnormal airflow noise and reducing the total noise level, thereby improving the user experience.

[0052] In other embodiments, the rectifier 2 further includes a third grille formed by ribs 23. The third grille includes multiple third through holes, the flow area of ​​which differs from the flow area of ​​the first through hole 211 and the flow area of ​​the second through hole 221. The third grille rectifies the airflow in different areas of the guide port 11, improving the airflow rectification effect. In this embodiment, the number and arrangement of grilles are not limited, and different settings can be made according to the turbulence distribution of the airflow at the guide port 11.

[0053] In some embodiments, such as Figures 2 to 3 As shown, the rib 23 includes a plurality of first ribs 231, a plurality of second ribs 232 and a partition rib 233. The plurality of first ribs 231 are interconnected to form a plurality of first through holes 211, the plurality of second ribs 232 are interconnected to form a plurality of second through holes 221, and the partition rib 233 is disposed between the first grid 21 and the second grid 22.

[0054] In this embodiment, by connecting multiple first ribs 231 to each other, connecting multiple second ribs 232 to each other, and using a separating rib 233 to connect the first ribs 231 and the second ribs 232, the arrangement density of the first through holes 211 and the second through holes 221 can be increased to improve the rectification effect while ensuring that the rectifier 2 has sufficient structural strength.

[0055] The portion of the first rib 231 closest to the inner wall of the guide port 11 is connected to the inner wall of the guide port 11 to form part of the first through hole 211. The portion of the second rib 232 closest to the inner wall of the guide port 11 is connected to the inner wall of the guide port 11 to form part of the second through hole 221. This achieves the connection between the rectifier 2 and the guide ring 1 while further increasing the arrangement density of the through holes.

[0056] In some embodiments, on a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille 22 and the projected area of ​​the rectifier 2 is 0.1-0.6.

[0057] In this embodiment, the ratio between the projected area of ​​the second grille 22 orthogonal to the first direction and the projected area of ​​the rectifier 2 orthogonal to the first direction is limited. On the one hand, this avoids the second grille 22 from having too high a proportion, resulting in excessive wind resistance and airflow loss. On the other hand, it avoids the second grille 22 from having too low a proportion, resulting in poor rectification effect. By limiting the above ratio, the rectifier 2 can effectively rectify the high-turbulence airflow without losing too much airflow, thereby improving the user experience.

[0058] For example, on a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille 22 and the projected area of ​​the rectifier 2 is 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6.

[0059] In some embodiments, the ratio between the flow area of ​​the second through hole 221 and the flow area of ​​the first through hole 211 is 0.2-0.8.

[0060] In this embodiment, by limiting the ratio between the flow area of ​​the second through hole 221 and the flow area of ​​the first through hole 211, it is ensured that the second through hole 221 can effectively rectify the high turbulence airflow while avoiding excessive airflow attenuation when the airflow passes through the second through hole 221, thereby reducing noise and achieving a large airflow output from the fresh air module 100.

[0061] For example, the ratio between the flow area of ​​the second through hole 221 and the flow area of ​​the first through hole 211 is 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, and 0.8.

[0062] In some embodiments, on a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille 22 and the projected area of ​​the rectifier 2 is 0.2-0.4. This ensures that the rectifier 2 effectively rectifies high-turbulence airflow without losing excessive air volume, further improving the user experience.

[0063] In some embodiments, the ratio between the flow area of ​​the second through-hole 221 and the flow area of ​​the first through-hole 211 is 0.4-0.6. This ensures that the second through-hole 221 can effectively rectify high-turbulence airflow while preventing excessive airflow attenuation as the airflow passes through it, thus reducing noise and achieving a large airflow output from the fresh air module 100.

[0064] In some embodiments, such as Figures 1 to 3 As shown, on a projection plane orthogonal to the first direction, the outer periphery of at least one of the first through hole 211 and the second through hole 221 is circular, elliptical, or polygonal.

[0065] In this embodiment, by defining the shape of the outer periphery of the first through hole 211 and the second through hole 221, the rectifier 2 can be made more diverse while ensuring its rectification effect.

[0066] The outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 can be the same, for example, both the outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 are polygons; the outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 can also be different, for example, the outer periphery of the first through hole 211 is circular and the outer periphery of the second through hole 221 is polygonal; in this embodiment, the shape of the outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 is not specifically limited.

[0067] In other embodiments, on the projection plane orthogonal to the first direction, at least one of the outer peripheral contours of the first through hole 211 and the second through hole 221 may also be an irregularly shaped hole.

[0068] In some embodiments, such as Figure 3 As shown, when the outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 are both polygons, the side length of the first through hole 211 is a, the side length of the second through hole 221 is b, and 0.2≤b / a≤0.8.

[0069] In this embodiment, by limiting the ratio between the side length of the second through hole 221 and the side length of the first through hole 211, the first through hole 211 with a longer side length is used to rectify the airflow with low turbulence, and the second through hole 221 with a shorter side length is used to rectify the airflow with high turbulence. This ensures that a large volume of airflow passes through while improving the rectification effect, effectively eliminating abnormal airflow noise and reducing the total noise level, thereby improving the user experience.

[0070] Optionally, the outer periphery of the first through hole 211 and the outer periphery of the second through hole 221 are both regular hexagons.

[0071] For example, the values ​​of b / a are 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, and 0.8.

[0072] In some embodiments, 0.4 ≤ b / a ≤ 0.6. By limiting the above ratio, the side length of the second through hole 221 is prevented from differing too much from the side length of the first through hole 211, ensuring rectification effect while improving airflow uniformity.

[0073] In some embodiments, one end of the rib 23 in the first direction is flush with one end of the guide ring 1. By setting one end of the rib 23 in the first direction to be flush with one end of the guide ring 1, in other words, one end of the rectifier 2 in the first direction is flush with one end of the guide ring 1, it is convenient to manufacture the rectifier 2 and the guide ring 1.

[0074] It is understandable that the rectifier 2 is installed at the air inlet of the fan 20 of the fresh air module 100. The end of the rib 23 adjacent to the fan 20 is flush with the end of the guide ring 1. On the one hand, the noise reduction effect of the rectifier 2 is better, and on the other hand, when the rectifier 2 and the guide ring 1 are integrally formed, it is easy to demold.

[0075] In some embodiments, such as Figure 4 As shown, the guide ring 1 has a dimension of c in the first direction, and the rib 23 has a dimension of d in the first direction, where 0.4 ≤ d / c ≤ 1.

[0076] In this embodiment, by limiting the ratio between the dimension of the rib 23 in the first direction and the dimension of the guide ring 1 in the first direction, the guide ring 1 can guide the airflow into the guide port 11, thereby facilitating the rectifier 2 to rectify the airflow, thereby disrupting the periodic pressure pulsation of the airflow, improving the uniformity of the airflow, reducing airflow noise, and improving comfort.

[0077] For example, the values ​​of d / c are 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.

[0078] In some embodiments, 0.6 ≤ d / c ≤ 0.8.

[0079] In this embodiment, the ratio between the size of the rib 23 in the first direction and the size of the guide ring 1 in the first direction is further limited. On the one hand, this facilitates the guide ring 1 to guide the airflow into the guide port 11, thereby improving the airflow efficiency. On the other hand, it avoids the size of the rib 23 in the first direction being too large or too small, thereby further improving the rectification effect of the rectifier 2.

[0080] Optionally, the end of the guide port 11 away from the fan 20 is provided as an arc-shaped guide port, which facilitates the use of the arc shape to guide the airflow and improve the airflow efficiency.

[0081] In some embodiments, the guide ring 1 and the rectifier 2 are integrally formed. By integrally forming the guide ring 1 and the rectifier 2, the structural strength of the rectifier assembly 30 is improved while the manufacturing cost of the rectifier assembly 30 is reduced.

[0082] The following is in conjunction with the appendix Figures 5-7 The fresh air module 100 of this embodiment will be described in detail.

[0083] The fresh air module 100 of this embodiment includes a housing 10, a fan 20, and a rectifier assembly 30. The fan 20 is disposed inside the housing 10 and has a fan inlet 201. The rectifier assembly 30 is the same as that in the above embodiment, and the rectifier 2 is arranged opposite to the fan inlet 201 to rectify the airflow entering the fan 20.

[0084] In this embodiment, by placing the rectifier assembly 30 inside the housing 10 and arranging the rectifier 2 opposite to the fan inlet 201, the multiple through holes on the rectifier 2 can separate the airflow entering the fan 20 into multiple small airflows, making the airflow entering the fan 20 flow evenly, reducing airflow noise, and thus improving the user experience.

[0085] In some embodiments, such as Figure 7 As shown, the fan 20 includes a volute 202 and an impeller 203. The impeller 203 is disposed inside the volute 202. One side of the volute 202 has an opening 2021. The guide ring 1 is detachably connected to the volute 202 to block the opening 2021.

[0086] In this embodiment, by detachably placing the guide ring 1 at the opening 2021 of the volute 202, it is convenient to maintain the fan 20 on the one hand, and can improve the uniformity of the airflow entering the volute 202 on the other hand, which is beneficial to improving the air delivery efficiency of the fan 20.

[0087] Optionally, the fan 20 is a centrifugal fan. The fan inlet 201 is located on one side of the fan 20 in the axial direction, and the fan outlet is located on one side of the fan 20 in the radial direction. That is, the fan 20 is a fan with axial air intake and radial air outlet. When the impeller 203 rotates, the airflow can be introduced from the fan inlet 201 to the fan outlet, thereby realizing the transmission of airflow and achieving a good airflow guiding effect.

[0088] For example, the second grille 22 and the first grille 21 are arranged sequentially, with the second grille 22 being closer to the volute tongue of the volute 202 than the first grille 21, which facilitates the second grille 22 in rectifying the high-turbulence airflow. Alternatively, the second grille 22 can be arranged around the first grille 21.

[0089] For example, the air guide ring is installed on the volute 202 by clips and screws.

[0090] For example, the guide ring 1 is plate-shaped, and a reinforcing member is provided on the outer side of the end of the guide ring 1 away from the fan 20, which helps to improve the structural strength of the guide ring 1.

[0091] The air conditioning device of this disclosure includes the fresh air module 100 of the above embodiments.

[0092] The air conditioning device of this disclosure improves the user experience by including the fresh air module 100 of the above embodiments.

[0093] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0094] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0096] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0097] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A rectifier assembly (30), characterized in that, include: A flow guide ring (1) has a flow guide opening (11) extending along a first direction; A rectifier (2) is disposed at the flow port (11) and completely covers the flow port (11). The rectifier (2) is constructed as a first grid (21) and a second grid (22) formed by ribs (23). The first grid (21) includes a plurality of first through holes (211), and the second grid (22) includes a plurality of second through holes (221). The flow area of ​​the first through holes (211) is greater than the flow area of ​​the second through holes (221).

2. The rectifier assembly (30) according to claim 1, characterized in that, The rib (23) includes a plurality of first ribs (231), a plurality of second ribs (232) and a partition rib (233). The plurality of first ribs (231) are interconnected to form a plurality of first through holes (211), the plurality of second ribs (232) are interconnected to form a plurality of second through holes (221), and the partition rib (233) is disposed between the first grid (21) and the second grid (22).

3. The rectifier assembly (30) according to claim 1, characterized in that, On a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille (22) and the projected area of ​​the rectifier (2) is 0.1-0.6; and / or, The ratio between the flow area of ​​the second through hole (221) and the flow area of ​​the first through hole (211) is 0.2-0.

8.

4. The rectifier assembly (30) according to claim 3, characterized in that, On a projection plane orthogonal to the first direction, the ratio between the projected area of ​​the second grille (22) and the projected area of ​​the rectifier (2) is 0.2-0.4; and / or, The ratio between the flow area of ​​the second through hole (221) and the flow area of ​​the first through hole (211) is 0.4-0.

6.

5. The rectifier assembly (30) according to claim 1, characterized in that, On a projection plane orthogonal to the first direction, the outer periphery of at least one of the first through hole (211) and the second through hole (221) is circular, elliptical or polygonal.

6. The rectifier assembly (30) according to claim 5, characterized in that, When the outer periphery of the first through hole (211) and the outer periphery of the second through hole (221) are both polygons, the side length of the first through hole (211) is a, the side length of the second through hole (221) is b, and 0.2≤b / a≤0.

8.

7. The rectifier assembly (30) according to claim 6, characterized in that, 0.4≤b / a≤0.

6.

8. The rectifier assembly (30) according to claim 2, characterized in that, One end of the rib (23) in the first direction is flush with one end of the guide ring (1).

9. The rectifier assembly (30) according to claim 8, characterized in that, The guide ring (1) has a dimension of c in the first direction, and the rib (23) has a dimension of d in the first direction, where 0.4 ≤ d / c ≤ 1.

10. The rectifier assembly (30) according to claim 9, characterized in that, 0.6≤d / c≤0.

8.

11. The rectifier assembly (30) according to any one of claims 1-10, characterized in that, The guide ring (1) and the rectifier (2) are integrally formed.

12. A fresh air module (100), characterized in that, include: Shell (10); A fan (20) is disposed inside the housing (10) and has a fan inlet (201); A rectifier assembly (30), wherein the rectifier assembly (30) is any one of the rectifier assemblies (30) according to claims 1-11 above, wherein the rectifier (2) is arranged opposite to the fan inlet (201) to rectify the airflow entering the fan (20).

13. The fresh air module (100) according to claim 12, characterized in that, The fan (20) includes a volute (202) and an impeller (203). The impeller (203) is disposed inside the volute (202). One side of the volute (202) has an opening (2021). The guide ring (1) is detachably connected to the volute (202) to block the opening (2021).

14. An air conditioning device, characterized in that, Includes the fresh air module (100) according to any one of claims 12-13.

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