Air guide ring, panel assembly, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses an air guide ring, a panel assembly, an air conditioner outdoor unit and an air conditioner, and relates to the technical field of air conditioners, the air guide ring comprises a body and a protruding structure, and the body is provided with a first side face facing an air duct; the protruding structure comprises a plurality of turbulent flow protruding parts arranged on the first side face, at least two turbulent flow protruding parts are distributed in the circumferential direction of the body at intervals, and at least two turbulent flow protruding parts are distributed in the axial direction of the body at intervals. According to the technical scheme provided by the utility model, the problems of pressure pulsation and flow separation caused by high-speed airflow impact can be improved, so that the efficiency of the fan is improved, and the pneumatic noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to an air guide ring, a panel assembly, an outdoor air conditioner unit, and an air conditioner. Background Technology

[0002] Existing air conditioner outdoor unit panels typically feature air guide rings and mesh covers. The air guide rings direct the airflow generated by the impeller, reducing airflow fluctuations and turbulence. The mesh covers the air outlet side of the air guide rings. However, the current air guide ring design is inadequate, resulting in noticeable pressure pulsations and flow separation when high-speed airflow impacts its inner surface. This reduces the fan's airflow and increases aerodynamic noise. Utility Model Content

[0003] The main purpose of this invention is to propose an air guide ring, panel assembly, outdoor air conditioning unit, and air conditioner, which aims to improve the pressure pulsation and flow separation problems caused by high-speed airflow impact, thereby improving the efficiency of the fan and reducing aerodynamic noise.

[0004] To achieve the above objectives, the air guide ring proposed in this utility model includes:

[0005] The main body has a first side facing the air duct;

[0006] The protruding structure includes a plurality of turbulence protrusions disposed on the first side, at least two of the turbulence protrusions being distributed circumferentially at intervals along the body, and at least two of the turbulence protrusions being distributed axially at intervals along the body.

[0007] In one embodiment, the surface of the turbulence protrusion is an outwardly convex curved surface, and the apex of the outwardly convex curved surface protrudes beyond the first side surface by a height of H, where H≤2mm.

[0008] In one embodiment, the surface of the turbulence protrusion is spherical, and the center of the sphere is located on the first side or on the side of the first side away from the air duct.

[0009] In one embodiment, the distance between two adjacent axially adjacent turbulence protrusions is d, and the distance between two adjacent circumferentially adjacent turbulence protrusions is D, where d < D.

[0010] In one embodiment, 1mm≤d≤3mm, 3mm≤D≤10mm.

[0011] In one embodiment, a plurality of the disturbance protrusions are distributed along a first intersection line where a first reference plane intersects the first side surface, and the first reference plane passes through the axis of the body.

[0012] In one embodiment, a plurality of the turbulence protrusions are distributed along a second intersection line where the second reference plane intersects the first side surface, and the second reference plane is arranged to intersect the axis of the body.

[0013] In one embodiment, the first side surface includes a cylindrical section and a guide section, the guide section is disposed on the air inlet side of the cylindrical section, and the cross-sectional profile of the guide section is gradually reduced inward along the air inlet direction; the cylindrical section and the guide section are provided with the turbulence protrusion.

[0014] In one embodiment, the body and the protrusion structure are integrally formed.

[0015] This utility model also proposes a panel assembly, including a panel and the aforementioned air guide ring, wherein the panel has an air outlet and the air guide ring is disposed at the air outlet.

[0016] This utility model also proposes an outdoor unit for an air conditioner, including a fan, a housing, and the aforementioned panel assembly. The side of the housing has a mounting opening, the panel assembly is installed in the mounting opening, and the fan is installed inside the housing.

[0017] In one embodiment, the fan includes a motor and a wind turbine connected to the motor, the wind turbine extending at least partially into the air guide ring, the gap between the wind turbine and the first side surface being less than or equal to 5 mm, and / or the gap between the wind turbine and the protruding structure being less than or equal to 3 mm.

[0018] This utility model also proposes an outdoor unit for an air conditioner, including the aforementioned air guide ring.

[0019] The technical solution of this utility model is to set multiple turbulence protrusions on the first side (i.e., the inner surface) of the air guide ring, and use these turbulence protrusions to disturb the flow separation of the wind field on the first side. This can improve the pressure pulsation and flow separation problems caused by the impact of high-speed airflow on the first side, and can also generate a guiding effect to reduce the duct resistance coefficient. This results in lower output power required by the fan under the same air volume, thereby improving the efficiency of the fan, and at the same time reducing the aerodynamic noise that occurs on the first side. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1A front view of an embodiment of the air guide ring provided by this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 for Figure 2 Axonometric view of the structure shown;

[0024] Figure 4 A schematic diagram of a panel assembly according to an embodiment of the present invention;

[0025] Figure 5 Exploded view of parts of an embodiment of an air conditioner outdoor unit provided by this utility model;

[0026] Figure 6 A partially enlarged view of another embodiment of the air guide ring provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 101. Outdoor unit of air conditioner; 102. Panel assembly; 103. Air duct; 104. First reference plane; 104'. Second reference plane; 105. First intersection line; 105'. Second intersection line; 10. Air guide ring; 11. Body; 111. First side; 112. Cylindrical section; 113. Air guide section; 12. Protruding structure; 121. Turbulence protrusion; 20. Panel; 21. Air outlet; 30. Mesh cover; 40. Fan; 42. Impeller; 50. Housing; 51. Mounting port.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Existing air conditioner outdoor unit panels typically feature air guide rings and mesh covers. The air guide rings direct the airflow generated by the impeller, reducing airflow fluctuations and turbulence. The mesh covers the air outlet side of the air guide rings. However, the current air guide ring design is inadequate, resulting in noticeable pressure pulsations and flow separation when high-speed airflow impacts its inner surface. This reduces the fan's airflow and increases aerodynamic noise.

[0034] Specifically, existing air conditioner outdoor units typically design the air guide ring, panel, and motor bracket as a single piece of sheet metal or casting to save manufacturing costs and improve production efficiency. The fan includes a motor and an impeller mounted on the motor bracket, with the impeller partially extending into the air guide ring. Therefore, due to limitations in the molding process, the inner surface of the air guide ring is usually smooth. This smooth inner surface cannot mitigate the pressure pulsation and flow separation problems caused by high-speed airflow impact, leading to increased flow resistance and energy loss, as well as reduced fan airflow and increased aerodynamic noise.

[0035] In view of this, the present invention proposes an air guide ring that can improve the pressure pulsation and flow separation problems caused by high-speed airflow impact, thereby improving the efficiency of the fan and reducing aerodynamic noise.

[0036] Please see Figures 1 to 3 In one embodiment of the present invention, the air guide ring 10 includes a body 11 and a protruding structure 12, wherein the body 11 has a first side 111 facing the air duct 103; the protruding structure 12 includes a plurality of turbulence protrusions 121 disposed on the first side 111, and at least two turbulence protrusions 121 are distributed circumferentially along the body 11.

[0037] The technical solution of this utility model provides a plurality of turbulence protrusions 121 on the first side 111 (i.e., the inner surface) of the air guide ring 10, and uses these turbulence protrusions 121 to disturb the flow separation of the wind field on the first side 111. This can improve the pressure pulsation and flow separation problems caused by the impact of high-speed airflow on the first side 111, and can also generate a guiding effect to reduce the resistance coefficient of the air duct 103. This results in lower output power required by the fan 40 under the same air volume, thereby improving the efficiency of the fan 40, and also reducing the aerodynamic noise occurring on the first side 111.

[0038] Please see Figure 3 Optionally, at least two turbulence protrusions 121 are distributed at intervals along the axial direction of the body 11. Thus, the simultaneous distribution of multiple turbulence protrusions 121 along the axial direction of the body 11 allows the airflow to be turbulent multiple times as it flows over the first side surface 111, thereby further improving the effectiveness of the protrusion structure 12 in addressing pressure pulsation and flow separation issues. Of course, in other embodiments, the turbulence protrusions 121 may extend along the axial direction of the body 11 from the air inlet side of the first side surface 111 to the air outlet side of the first side surface 111.

[0039] It should be noted that, in the embodiments of this utility model, the axial distribution and circumferential distribution should be interpreted broadly. They do not specifically refer to the distribution of multiple turbulence protrusions 121 in directions that are completely parallel or completely perpendicular to the axis of the body 11, but also include the distribution of multiple turbulence protrusions 121 in directions that intersect with the axis of the body 11.

[0040] For example, please see Figure 2 and Figure 3 In one embodiment, multiple agitator protrusions 121 are distributed along a first intersection line 105 where a first reference plane 104 intersects with a first side surface 111. The first reference plane 104 passes through the axis of the body 11. That is, the first intersection line 105 and the axis of the body 11 are simultaneously located in the same plane (i.e., the first reference plane 104). When the first side surface 111 is a cylindrical surface, the first intersection line 105 is completely parallel to the axis of the body 11, and in this case, the multiple agitator protrusions 121 are distributed along a direction completely parallel to the axis of the body 11. Figure 2 and Figure 3 The axis of the body 11 in the illustrated embodiment extends along the front-back direction shown in the figure.

[0041] It should be noted that, Figures 1 to 3The first reference plane 104 and the first intersection line 105 are indicated by bold dashed lines to facilitate understanding of their relationship with the axis of the body 11 and the distribution of the spoiler protrusions 121. It can be understood that the first reference plane 104 and the first intersection line 105 correspond to the distribution of the spoiler protrusions 121; therefore, the first reference plane 104 and the first intersection line 105 are not one or two as shown in the figure, but rather there are multiple ones, which are not all shown.

[0042] Please see Figure 6 , Figure 6 This is a partially enlarged view of another embodiment of the air guide ring provided by this utility model, the enlarged position and angle being the same as... Figure 2 The view shown is consistent with the one presented. Please refer to [link / reference]. Figure 6 In another embodiment, a plurality of turbulence protrusions 121 are distributed along a second intersection line 105' where the second reference plane 104' intersects the first side surface 111, and the second reference plane is arranged to intersect the axis of the body 11. For example, Figure 6 In the embodiment shown, the second reference plane 104' forms a 30° angle with the axis of the body 11. If the first side surface 111 is a cylindrical surface, the angle between the second intersection line 105' and the straight line of the first side surface 111 is 30°.

[0043] in, Figure 6 The axis of the body 11 in the illustrated embodiment also extends in the front-back direction (i.e., perpendicular to the axis). Figure 5 (The direction of the plane containing the up, down, left, and right directions shown). Of course, in other embodiments, the angle between the second reference plane 104' and the axis of the body 11 can also be other values, such as 15°, 45°, or 60°.

[0044] It is understood that the air guide ring 10 of this utility model is not limited to use in air conditioners, especially outdoor units of air conditioners, but can also be used in indoor units of air conditioners, or other equipment, such as heaters, fresh air systems, or fans. To facilitate understanding of the beneficial effects of the air guide ring 10 of this utility model, the following explanation will take the outdoor unit 101 of an air conditioner as an example.

[0045] Specifically, you may refer to Figure 5 In one embodiment of the outdoor unit 101 of this utility model, the outdoor unit 101 includes a fan 40, a housing 50, a panel 20, and an air guide ring 10. The housing 50 has a mounting opening 51 on its side, the panel 20 is mounted on the mounting opening 51, the air guide ring 10 is mounted on the panel 20, and the fan 40 is mounted inside the housing 50. Optionally, the fan 40 includes a motor (not shown in the drawings) and a fan wheel 42 driven by the motor. The motor is located on the panel 20, and the fan wheel 42 at least partially extends into the air guide ring 10. The fan wheel 42 is an axial flow fan wheel 42. Figure 5The air guide ring shown does not display the characteristic outline of the raised structure 12.

[0046] It should be noted that the air duct 103 of this utility model refers to the channel space defined by the components of the outdoor unit 101 of the air conditioner. This channel space is used for the airflow generated by the fan 40 during operation, and therefore includes the space surrounded by the inner circumferential surface of the air guide ring 10. Therefore, the first side surface 111 of the air guide ring 10 is the inner circumferential surface of the air guide ring 10, and the air flowing towards the outside of the outdoor unit 101 of the air conditioner will flow through and contact the first side surface 111.

[0047] Optionally, the body 11 and the protruding structure 12 are integrally formed. Specifically, the body 11 and the protruding structure 12 are injection molded as a single unit. This results in a simple structure that is easy to implement for complex and varied designs of the protruding structure 12, and also helps to improve production efficiency. Of course, in other embodiments, the body 11 and the protruding structure 12 can also be manufactured separately. For example, after the body 11 is formed, multiple turbulence protrusions 121 can be attached to the first side surface 111 of the body 11 by means of bonding, riveting, or welding.

[0048] Please see Figure 2 and Figure 3 Optionally, the surface of the turbulence protrusion 121 is a convex curved surface, and the apex of the convex curved surface protrudes above the first side surface 111 by a height H, where H ≤ 2 mm. Thus, the convex curved surface with a protrusion height not exceeding 2 mm can both interfere with the flow stratification phenomenon on the first side surface 111 and avoid causing significant flow resistance and increased noise, while also facilitating its manufacturing. Of course, in other embodiments, the surface of the turbulence protrusion 121 may simultaneously include features of both convex and concave curved surfaces, or the protrusion height of the convex curved surface may be 3 mm, 5 mm, or 7 mm, etc.

[0049] Optionally, the surface of the turbulence protrusion 121 is spherical, with the center of the sphere located on the first side surface 111 or on the side of the first side surface 111 away from the air duct 103. That is, the surface of the turbulence protrusion 121 is a partial spherical surface with a central angle not exceeding 180°. This is more conducive to the manufacturing and molding of the turbulence protrusion 121. In particular, when the air guide ring 10 is integrally molded by injection molding, this spherical feature is easier to demold. In order to make the turbulence protrusion 121 easier to mold and have a higher yield, the radius of the sphere is optionally less than or equal to 1 mm. Of course, in other embodiments, the radius of the sphere can also be 1.5 mm or 2 mm, and the surface of the turbulence protrusion 121 can also be a regular curved surface such as an ellipsoid or other irregular curved surfaces.

[0050] Without loss of generality, since the impeller 42 extends into the inner circumferential space of the guide ring 10, a certain clearance needs to be reserved to avoid motion interference between the impeller 42 and the guide ring 10 during rotation. The blade tip clearance between the impeller 42 and the guide ring 10 is typically designed to be 5mm, which helps ensure sufficient motion reliability and optimizes the wind field near the guide ring 10.

[0051] It is worth mentioning that in embodiments where the gap between the impeller 42 and the first side surface 111 is less than or equal to 5 mm, these turbulence protrusions 121, with a protrusion height not exceeding 2 mm, reduce the blade tip clearance to a certain extent, thereby reducing leakage flow at the blade tip and improving the efficiency of the fan 40. Furthermore, the slightly protruding turbulence protrusions 121 do not cause interference with the movement of the impeller 42, thus ensuring the normal operation of the fan 40. For example, a 5 mm gap between the impeller 42 and the first side surface 111 and a 1 mm protrusion height of the turbulence protrusions 121 are more effective.

[0052] Please see Figure 2 and Figure 3 The distance between two adjacent turbulence protrusions 121 in the axial direction is d, and the distance between two adjacent turbulence protrusions 121 in the circumferential direction is D, where d < D. Thus, on the one hand, the multiple turbulence protrusions 121 in the axial direction are relatively compactly distributed, which is beneficial for the airflow to experience more interference from the turbulence protrusions 121 as it flows from the air inlet side of the first side 111 to its air outlet side, thereby improving the effect of the protruding structure 12 on the airflow separation problem.

[0053] On the other hand, the multiple turbulence protrusions 121 that are more compactly distributed in the axial direction can be regarded as a group of turbulence protrusion combinations. The protruding structure 12 can then be considered as being composed of multiple such turbulence protrusion combinations distributed in the circumferential direction. The interval between two adjacent turbulence protrusion combinations can serve as a guiding channel, guiding the airflow passing over it. Thus, the circumferential distribution of the multiple turbulence protrusions 121 is relatively loose, which is beneficial for the multiple turbulence protrusion combinations to guide the airflow without causing a significant increase in aerodynamic drag.

[0054] Optionally, 1mm ≤ d ≤ 3mm, 3mm ≤ D ≤ 10mm. For example, d can be 1.5mm and D can be 6mm. Of course, in other embodiments, d and D can also be other ranges of values. For example, in some embodiments, 3mm < d ≤ 20mm; in still other embodiments, 10mm < d ≤ 50mm.

[0055] Please see Figure 2 and Figure 3The first side 111 includes a cylindrical section 112 and a guide section 113. The guide section 113 is located on the air inlet side of the cylindrical section 112, and the cross-sectional profile of the guide section 113 gradually narrows inward along the air inlet direction. Both the cylindrical section 112 and the guide section 113 are provided with turbulence protrusions 121. That is, the guide section 113 and the cylindrical section 112 are distributed sequentially along the air inlet direction of the air guide ring 10, or in other words, the guide section 113 is located closer to the fan 40, and the airflow first flows through the guide section 113 and then through the cylindrical section 112. In this way, by setting the guide section 113, it is beneficial to improve the air guiding effect of the air guide ring 10, thereby improving the efficiency of the fan 40 and reducing aerodynamic noise. Secondly, both the cylindrical section 112 and the guide section 113 are provided with protrusions 12, which can improve the interference effect of the protrusions 12 on the airflow separation phenomenon.

[0056] Of course, in some other embodiments, the flow guide section 113 may not be provided, and the first side surface 111 may be entirely provided as a cylindrical section 112. In still other embodiments, the turbulence protrusion 121 may be provided only on the cylindrical section 112 or the flow guide section 113.

[0057] Please see Figure 4 This utility model also proposes a panel assembly 102, which includes a panel 20 and the aforementioned air guide ring 10. The specific structure of the air guide ring 10 is as described in the above embodiments. Since this panel assembly 102 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, and will not be described in detail here. Among them, the panel 20 has an air outlet 21, and the air guide ring 10 is disposed at the air outlet 21.

[0058] Alternatively, the air guide ring 10 may be fastened to the panel 20 by screws or by clips; this application does not make any specific limitation in this regard.

[0059] Optionally, the panel assembly 102 also includes a mesh cover 30, which covers the air outlet side of the air outlet 21, that is, the outside of the air outlet 21. Optionally, the mesh cover 30 is detachably mounted on the panel 20 by screws or clips. In this way, the mesh cover 30 can prevent foreign objects or small animals from entering the air conditioner outdoor unit, and can also prevent human body parts, such as hands, from being accidentally put into the air conditioner outdoor unit and being hit by the high-speed rotating impeller, thus preventing injury.

[0060] Please see Figure 5This utility model also proposes an outdoor unit for an air conditioner. The outdoor unit 101 includes a fan 40, a housing 50, and the aforementioned panel assembly 102. The specific structure of the air guide ring 10 of the panel assembly 102 is as described in the above embodiments. Since this outdoor unit 101 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. The housing 50 has a mounting opening 51 on its side, the panel assembly 102 is installed in the mounting opening 51, and the fan 40 is installed inside the housing 50.

[0061] Optionally, the fan 40 includes a motor (not shown in the attached drawings) and a fan wheel 42 driven by the motor. The motor is located on the panel 20. The fan wheel 42 extends at least partially into the guide ring 10. The gap between the fan wheel 42 and the first side surface 111 is less than or equal to 5 mm, and the gap between the fan wheel 42 and the protruding structure 12 is less than or equal to 3 mm. Optionally, the fan wheel 42 is an axial flow fan wheel 42. In this way, the protruding structure 12, with a protrusion height not exceeding 2 mm, reduces the blade tip clearance to a certain extent, thereby reducing leakage flow at the blade tip and improving the efficiency of the fan 40. Furthermore, the slightly protruding turbulence protrusion 121 does not cause interference with the movement of the fan wheel 42, thus ensuring the normal operation of the fan 40. For example, it is more effective when the gap between the fan wheel 42 and the first side surface 111 is set to 5 mm and the protrusion height of the turbulence protrusion 121 is 1 mm.

[0062] Specifically, respectively with Figure 1 The air guide ring 10 of this application and the conventional air guide ring 10 (without the protruding structure 12, and with the same other parameters) are installed on the outdoor unit 101 of the air conditioner, and then tests are conducted to obtain test results regarding the power and noise of the fan 40. Specific test results are shown in Table 1 below. Figure 1 The wind guide ring 10 structure shown has a value of 1.5mm for d, 6mm for D, and 1mm for H, and the surface of the turbulence protrusion 121 is spherical; secondly, the gap between the impeller 42 and the first side 111 is set to 5mm.

[0063] As can be seen from Table 1, under the condition of achieving basically the same air volume (e.g., air volume of 2654m³), 3 / h and 2712m 3 (The airflow rate can be considered basically the same). The air conditioner outdoor unit 101 using the air guide ring 10 in this application requires lower motor power and generates lower noise. Generally speaking, the operating airflow of the air conditioner outdoor unit 101 is typically set at 2500 m³ / h. 3 / h to 2800m 3As can be seen from the data, within this airflow range, the required motor power of the present invention is reduced more significantly, meaning the fan 40 is more efficient and the noise is also reduced more. Therefore, it can be seen that the present invention effectively improves the efficiency of the fan 40 and reduces noise.

[0064] Table 1

[0065]

[0066] This utility model also proposes an air conditioner, which includes the aforementioned air guide ring 10. The specific structure of the air guide ring 10 is as described in the above embodiments. Since this air conditioner 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.

[0067] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air guide ring, characterized in that, include: The main body has a first side facing the air duct; The protruding structure includes a plurality of turbulence protrusions disposed on the first side, at least two of the turbulence protrusions being distributed circumferentially at intervals along the body, and at least two of the turbulence protrusions being distributed axially at intervals along the body.

2. The air guide ring as described in claim 1, characterized in that, The surface of the turbulence protrusion is an outwardly convex curved surface, and the apex of the outwardly convex curved surface protrudes beyond the first side surface by a height of H, where H≤2mm.

3. The air guide ring as described in claim 2, characterized in that, The surface of the turbulence protrusion is spherical, and the center of the sphere is located on the first side or on the side of the first side away from the air duct.

4. The air guide ring as described in claim 1, characterized in that, The distance between two adjacent turbulence protrusions in the axial direction is d, and the distance between two adjacent turbulence protrusions in the circumferential direction is D, where d < D.

5. The air guide ring as described in claim 4, characterized in that, 1mm≤d≤3mm, and / or, 3mm≤D≤10mm.

6. The air guide ring as described in claim 1, characterized in that, The plurality of the disturbance protrusions are distributed along a first intersection line where a first reference plane intersects with the first side surface, and the first reference plane passes through the axis of the body; or, the plurality of the disturbance protrusions are distributed along a second intersection line where a second reference plane intersects with the first side surface, and the second reference plane is arranged to intersect with the axis of the body. And / or, the first side includes a cylindrical section and a guide section, the guide section is disposed on the air inlet side of the cylindrical section, and the cross-sectional profile of the guide section is gradually reduced inward along the air inlet direction; the cylindrical section and the guide section are provided with the turbulence protrusion; And / or, the body and the protruding structure are integrally formed.

7. A panel assembly, characterized in that, The device includes a panel and an air guide ring as described in any one of claims 1 to 6, wherein the panel has an air outlet and the air guide ring is disposed at the air outlet.

8. An outdoor unit for an air conditioner, characterized in that, It includes a fan, a housing, and a panel assembly as described in claim 7, wherein the side of the housing has a mounting opening, the panel assembly is mounted in the mounting opening, and the fan is mounted inside the housing.

9. The outdoor unit of the air conditioner as described in claim 8, characterized in that, The fan includes a motor and a wind turbine connected to the motor. The wind turbine extends at least partially into the air guide ring. The gap between the wind turbine and the first side is less than or equal to 5 mm, and / or the gap between the wind turbine and the protruding structure is less than or equal to 3 mm.

10. An air conditioner, characterized in that, Includes the air guide ring as described in any one of claims 1 to 6.

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