Air supply assembly, air conditioner outdoor unit and air conditioner

Abstract

The invention provides an air supply assembly, an air conditioner outdoor unit and an air conditioner, the air supply assembly comprises a wind wheel, the wind wheel is provided with at least one fan blade, the fan blade is provided with a fan blade rear edge and a fan blade outer edge, the fan blade outer edge is located on the side deviating from the rotation axis of the wind wheel, and the fan blade rear edge is connected with the fan blade outer edge; the orientation of the rear edges of the fan blades is opposite to the rotating direction of the wind wheel, and turbulent flow structures are arranged on the rear edges of the fan blades; the flow guide part is provided with a flow guide channel, the flow guide channel is arranged on the outer side of the wind wheel in a sleeving mode, the inner wall of at least part of the flow guide channel is in a straight barrel shape, a preset gap is formed between the inner wall of the flow guide channel and the outer edge of the fan blade, and at least most of the turbulent flow structure is contained in the straight barrel-shaped part of the flow guide channel. The turbulent flow structure can disturb the vortex formed on the fan blades and disperse the energy of the vortex, the preset gap is formed between the outer edges of the fan blades and the straight-barrel-shaped flow guide channel, the phenomenon that the vortex is separated from the fan blades is prevented, and therefore the possibility of forming aerodynamic noise is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air supply component, an air conditioning outdoor unit, and an air conditioner. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] In air conditioning systems, aerodynamic noise is one of the main sources of noise during operation. When air flows over the surfaces of the blades, vortices are generated. Vortexes are easily detached at the trailing edges of the blades, often causing significant pulsation. Periodic vortex detachment causes the airflow force acting on the object to vary, generating blade vortex noise. Summary of the Invention

[0004] The present invention aims to at least solve the technical problem of blade eddy current noise being easily generated in air conditioning systems. This aim is achieved by the following technical solutions:

[0005] A first aspect of the present invention provides an air supply assembly, comprising:

[0006] A wind wheel, wherein the wind wheel has at least one fan blade, the fan blade having a fan blade trailing edge and a fan blade outer edge, the fan blade outer edge is located on a side of the fan blade away from the rotation axis of the wind wheel, the fan blade trailing edge is connected to the fan blade outer edge, the direction of the fan blade trailing edge is opposite to the rotation direction of the wind wheel, and the fan blade trailing edge is provided with a spoiler structure;

[0007] A flow guide member, wherein the flow guide member has a flow guide channel, and the flow guide channel is sleeved on the outside of the wind wheel, and at least part of the inner wall of the flow guide channel is straight cylindrical, and there is a preset gap between the inner wall and the outer edge of the fan blade, and the preset gap is used to limit the airflow formed on the fan blade from moving along the radial direction of the flow guide channel, wherein at least most of the flow-disturbing structure is accommodated in the straight cylindrical part of the flow guide channel.

[0008] The air supply assembly provided by the present invention can disturb the vortex formed on the fan blade and disperse the energy of the vortex by arranging a spoiler structure at the trailing edge of the fan blade of the wind wheel, and a preset gap is set between the outer edge of the fan blade and the straight cylindrical guide channel to prevent the vortex from detaching from the fan blade, thereby reducing the possibility of forming vortex noise.

[0009] In addition, the air supply assembly according to the present invention may also have the following additional technical features:

[0010] In some embodiments of the present invention, the spoiler structure includes a plurality of concave portions and a plurality of convex portions, and the concave portions and the convex portions are alternately arranged along the extension direction of the trailing edge of the fan blade.

[0011] In some embodiments of the present invention, the recessed portion and the convex portion have a height difference in the direction of the rotation axis of the wind wheel, wherein all of the plurality of recessed portions are accommodated in the straight cylindrical portion of the guide channel.

[0012] In some embodiments of the present invention, the spoiler structure is arranged in a serrated shape.

[0013] In some embodiments of the present invention, along the rotation axis of the wind wheel, the size of the spoiler structure is L1, and the length of the straight cylindrical portion of the spoiler structure accommodated in the guide channel is L2, wherein L2 / L1 is greater than 0.8.

[0014] In some embodiments of the present invention, the fan blade has a first end and a second end along the rotation axis of the wind wheel;

[0015] The first end is located at an edge region of one end of the straight-cylindrical flow guiding channel, and the second end is located at an edge region of the other end of the straight-cylindrical flow guiding channel.

[0016] In some embodiments of the present invention, the preset gap is any value between 5 mm and 15 mm.

[0017] In some embodiments of the present invention, the guide channel includes an inlet section, an outlet section and an intermediate section, the intermediate section is arranged between the inlet section and the outlet section, the intermediate section is arranged in a straight cylindrical shape, and the inner diameter of the outlet section gradually increases along the direction from the inlet section to the outlet section, and the inner diameter of the inlet section gradually decreases along the direction from the inlet section to the outlet section.

[0018] In some embodiments of the present invention, the outlet section is provided with a first noise reduction structure, and most of the sawtooth-shaped spoiler structures are accommodated in the middle section.

[0019] In some embodiments of the present invention, the inlet section is provided with a second noise reduction structure.

[0020] In some embodiments of the present invention, the outer wall of the flow guide is provided with reinforcing ribs.

[0021] In some embodiments of the present invention, the outer wall of the guide member includes a plurality of transverse ribs and a plurality of longitudinal ribs, the plurality of transverse ribs are arranged at intervals along the rotation axis of the wind wheel, the plurality of longitudinal ribs are arranged at intervals along the circumference of the guide member, and the transverse ribs and the longitudinal ribs are cross-arranged on the outer wall of the guide member.

[0022] A second aspect of the present invention further provides an air-conditioning outdoor unit, the air-conditioning outdoor unit comprising:

[0023] a first shell, wherein the first shell is provided with a first air outlet and a first air inlet, and the first air outlet is provided at the top of the shell;

[0024] The air supply assembly as described in any of the above items is arranged in the first shell, and the air supply assembly has an air outlet, and the air outlet is arranged opposite to the first air outlet.

[0025] In some embodiments of the present invention, the air conditioner outdoor unit further includes a heat exchanger assembly, which is disposed below the first shell. The heat exchanger assembly forms a heat exchange air duct, which is connected to the first air inlet.

[0026] In some embodiments of the present invention, the air conditioner outdoor unit further comprises:

[0027] a second shell, the heat exchanger assembly being arranged on a side wall of the second shell;

[0028] An electric control box is arranged on the side wall of the second shell, and the heat exchanger and the electric control box are combined to form the heat exchange air duct.

[0029] In some embodiments of the present invention, the air conditioner outdoor unit further comprises:

[0030] a mesh cover, the mesh cover being arranged at the first air outlet of the first housing, the mesh cover having a grid structure, and the grid structure being arranged opposite to the wind wheel;

[0031] The air supply assembly further includes a driving assembly, wherein the driving assembly is connected to the grille structure, and a driving shaft of the driving assembly is connected to the wind wheel.

[0032] A third aspect of the present invention further provides an air conditioner, comprising the air conditioner outdoor unit as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0034] Figure 1 This is a structural schematic diagram of an air supply assembly according to an embodiment of the present invention;

[0035] Figure 2 for Figure 1 B enlarged view;

[0036] Figure 3 This is a structural schematic diagram of an air supply assembly according to an embodiment of the present invention;

[0037] Figure 4 for Figure 3 DD sectional view;

[0038] Figure 5 This is a structural schematic diagram of an air guide member of an air supply assembly according to an embodiment of the present invention;

[0039] Figure 6 for Figure 5 CC sectional view;

[0040] Figure 7 A three-dimensional diagram of an air guide member of an air supply assembly according to an embodiment of the present invention;

[0041] Figure 8 This is a schematic structural diagram of an air supply assembly of an air conditioner outdoor unit according to an embodiment of the present invention;

[0042] Figure 9 A schematic structural diagram of an air-conditioning outdoor unit according to an embodiment of the present invention;

[0043] Figure 10 This is a structural schematic diagram of a first housing of an air-conditioning outdoor unit according to an embodiment of the present invention;

[0044] Figure 11 This is a structural schematic diagram of a second housing of an air-conditioning outdoor unit according to an embodiment of the present invention;

[0045] Figure 12 This is a partial structural diagram of an air-conditioning outdoor unit according to an embodiment of the present invention, which shows the internal structure of the air-conditioning outdoor unit.

[0046] The reference numerals are as follows:

[0047] 100. Air supply assembly;

[0048] 110, wind wheel; 111, fan blade; 112, fan blade trailing edge; 113, spoiler structure; 1131, concave portion; 1132, convex portion; 114, fan blade outer edge; 115, first end; 116, second end; A, rotation direction;

[0049] 120. Flow guide; 121. Flow guide channel; 122. Inlet section; 123. Outlet section; 124. Intermediate section; 125. Preset gap; 126. Transverse rib; 127. Longitudinal rib;

[0050] 150, drive assembly;

[0051] 130. First noise reduction structure; 140. Second noise reduction structure;

[0052] 200. Air conditioner outdoor unit;

[0053] 210, first housing; 211, first air outlet; 212, first air inlet;

[0054] 220. Heat exchanger assembly; 221. Heat exchange air duct; 222. Opening structure;

[0055] 230. Second housing; 231. Second air inlet;

[0056] 240, electric control box;

[0057] 250. Mesh cover; 251. Grille structure. DETAILED DESCRIPTION

[0058] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0059] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0060] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0061] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0062] The present application provides an air supply assembly 100, which is suitable for HVAC equipment such as air conditioners, and is particularly suitable for outdoor units of HVAC equipment. The air supply assembly 100 includes a wind wheel 110 and a guide member 120, wherein the guide member 120 has a guide channel 121, and the guide channel 121 includes an inlet section 122, an outlet end and a middle section 124. The middle section 124 is located between the inlet section 122 and the outlet section 123. The middle section 124 is used to cooperate with the fan blades 111 of the wind wheel 110 to play a wind guiding role and prevent the airflow on the fan blades 111 from generating noise.

[0063] The guide channel 121 of the guide member 120 is sleeved on the outside of the wind wheel 110, and there is a preset gap 125 between at least part of the inner wall surface of the guide channel 121 and the outer edge 114 of the wind wheel 110. The purpose of setting the preset gap 125 is to prevent the occurrence of vortex separation on the fan blade 111. In the narrow space of the preset gap 125, the vortex cannot separate from the fan blade 111, causing air pressure pulsation, thereby preventing the formation of vortex noise.

[0064] The preset gap 125 can be set to any value between 5 mm and 15 mm, so that the structure between the guide member 120 and the wind wheel 110 is more compact, while satisfying the guide channel 121 of the guide member 120 to guide the wind wheel 110.

[0065] The wind wheel 110 of the air supply assembly 100 of the present application is provided with at least one blade 111. Along the rotation direction A of the wind wheel 110, the blade 111 forms a blade trailing edge 112 in the rear edge area, and a spoiler structure 113 is provided at the blade trailing edge 112. At least most of the spoiler structure 113 is accommodated in the straight cylindrical guide channel 121. The spoiler structure 113 is provided in the blade trailing edge 112 area, which can prevent the airflow from forming vortices in the blade trailing edge 112 area. The spoiler structure 113 can also be set to a structure that can disperse large-scale vortices, thereby dispersing the vortex energy that has been formed and reducing the aerodynamic noise generated when the wind wheel 110 rotates.

[0066] In one embodiment of the present application, the spoiler structure 113 can be set to a structural form having a recessed portion 1131 and a convex portion 1132. The recessed portion 1131 and the convex portion 1132 are set in the trailing edge 112 area of ​​the fan blade, which can cut large-scale low-frequency vortices into small-scale high-frequency vortices, so that the sound wave energy is quickly scattered, thereby reducing broadband noise, thereby reducing the aerodynamic noise when the axial flow blade rotates.

[0067] The aerodynamic vortex noise referred to in this application should be understood as follows: Under normal circumstances, when airflow passes over an obstacle, due to the influence of viscous friction of air molecules, the airflow with a certain speed interacts with the relatively stationary gas behind the obstacle, forming an airflow with vortices in the downstream area of ​​the obstacle. These vortices are constantly forming and shedding, and the pressure at the center of each vortex is lower than the pressure of the surrounding medium. Whenever a vortex detaches, the turbulent airflow will experience a pressure jump. These pressure jumps propagate outward through the surrounding medium and act on the obstacle. When the pressure pulsation in the turbulent airflow contains audible audio components and is sufficiently strong, noise is radiated, which is called vortex noise or turbulent noise.

[0068] The air supply assembly 100 of the embodiment of the present application accommodates most of the spoiler structure 113 of the trailing edge 112 of the fan blade in a straight cylindrical guide channel 121, and a preset gap 125 is set between the outer edge 114 of the fan blade 111 and the inner wall surface of the straight cylindrical guide channel 121. On the one hand, the spoiler structure 113 can disperse the already formed vortex, and on the other hand, the preset gap 125 can prevent the vortex from falling off, thereby reducing the possibility of aerodynamic noise.

[0069] In one embodiment of the present application, a straight cylindrical guide channel 121 can be set in the middle section 124 of the guide member 120, wherein the straight cylindrical shape means that the inner wall surface has no undulations along the axial direction of the guide channel 121, and the inner diameter of this section of the guide channel 121 is consistent, which can also be called a "straight segment". The middle section 124 can be completely set as a straight cylindrical guide channel 121, and an inlet section 122 is set at one end of the middle section 124, and an outlet section 123 is set at the other end of the middle section 124; part of the axial section of the middle section 124 can also be set to a straight cylindrical shape.

[0070] The air supply assembly 100 of the embodiment of the present application can accommodate most of the flow disturbance structure 113 of the fan blade 111 in the straight cylindrical guide channel 121. The straight cylindrical inner wall of the middle section 124 guides the diffusion of the airflow, and within the preset gap 125, the formation of noise can be greatly reduced.

[0071] It should be noted that, with regard to the airflow noise of the wind wheel 110, the shedding of vortices at the trailing edge of the blades 111 is an important factor in the noise generated by the fan. The periodic vortex detachment will lead to changes in the corresponding circulation volume. The circulation volume refers to the volume occupied by the fluid in a closed path passing through the path within a specified time.

[0072] In some embodiments of the present application, the spoiler structure 113 of the trailing edge 112 of the fan blade includes a plurality of recesses 1131 and a plurality of protrusions 1132. The recesses 1131 and the protrusions 1132 are alternately arranged, and all the plurality of recesses 1131 are accommodated in the straight cylindrical flow guide channel 121. In this embodiment, the alternating recesses 1131 and the protrusions 1132 can better disperse the vortex that has been formed. The protrusions 1132 and recesses 1131 can be extended outward along the trailing edge 112 of the fan blade, or can be extended along the curved fan surface of the fan blade 111. The recesses 1131 and the protrusions 1132 should be smoothly connected to the fan blade 111, which is conducive to the flow of air on the surface of the fan blade 111.

[0073] In this embodiment, all the recesses 1131 are accommodated in the straight-cylindrical guide channel 121. The purpose is that when the vortex passes through the recess 1131, it can all enter the preset gap 125 between the outer edge 114 of the fan blade and the inner wall surface of the guide member 120, and flow toward the outlet direction of the air supply assembly 100 under the guiding action of the guide member 120. Since the outlet section 123 of the guide member 120 is connected to the middle section 124, the recess 1131 is confined in the straight-cylindrical guide section, which can prevent the vortex from entering the outlet section 123. In particular, when the outlet section 123 of the guide member 120 is set to be trumpet-shaped, it is easy to cause airflow fluctuations and thus generate aerodynamic noise.

[0074] More specifically, the recesses 1131 and the protrusions 1132 can be wavy structures formed on the trailing edge 112 of the fan blade, wherein, in order to make the airflow flow smoother and improve the flow efficiency of the airflow, the spoiler structure 113 is extended outward along the curved surface of the fan blade 111, and the extension direction is consistent with the flow direction of the airflow on the surface of the fan blade 111 when the wind wheel 110 rotates. Moreover, under the disturbance of the alternating recesses 1131 and protrusions 1132, the energy of the vortex is dispersed, and all the recesses 1131 are accommodated in the middle section 124 of the guide member 120, so that the airflow passing through the recesses 1131 can be confined to the guide channel 121 with a straight cylindrical inner wall, thereby preventing the fluctuation of the airflow from generating noise.

[0075] In this embodiment, the inner wall of the middle section 124 of the guide member 120 can be set to a straight cylindrical shape, and a predetermined gap can be set between the inner wall surface and the outer edge 114 of the wind wheel 110 or the outer edge 114 of the fan blade, which can limit the airflow on the fan blade 111 from generating large fluctuations after passing through the spoiler structure 113; the inner diameter of the middle section 124 is consistent, preventing the airflow from fluctuating in the radial direction and reducing noise.

[0076] In some embodiments of the present application, a plurality of adjacent recesses 1131 and protrusions 1132 are serrated and formed along the edge of the blade 111 at the blade trailing edge 112. In this embodiment, the spoiler structure 113 of the blade trailing edge 112 is serrated by the staggered recesses 1131 and protrusions 1132, with the tooth tips extending along the fan surface and aligned with the flow direction of the airflow to improve the flow efficiency of the airflow. The serrated spoiler structure 113 can also be arranged radially along the wind wheel 110 to increase the area of ​​the guide structure at the blade trailing edge 112, thereby increasing the contact area between the spoiler structure 113 and the airflow and reducing the detachment of the vortex on the surface of the blade 111.

[0077] The air supply assembly 100 of the embodiment of the present application improves the wake flow by providing a serrated structure at the trailing edge of the fan blade 111, cutting the large-scale low-frequency vortex into small-scale high-frequency vortex, so that the sound wave energy is quickly scattered, thereby reducing broadband noise, thereby reducing the aerodynamic noise when the axial flow fan blade rotates.

[0078] In some embodiments of the present application, along the rotation axis of the wind rotor 110, the length of the flow-disrupting structure 113 is L1, and the length of the flow-disrupting structure contained within the straight-cylindrical flow-guiding channel 121 is L2, where L2 / L1 is greater than 0.8. In this embodiment, along the rotation direction A of the wind rotor 110, 80% of the length of the flow-disrupting structure 113 is disposed within the straight-cylindrical flow-guiding channel 121 of the flow-guiding member 120. This confines the majority of the airflow from the blades 111, after passing through the flow-disrupting structure 113, to the straight-cylindrical flow-guiding channel 121. Due to the confinement of the straight-cylindrical flow-guiding channel 121, the airflow is prevented from generating large fluctuations in the radial direction of the flow-guiding member 120, thereby preventing eddies from further generating noise.

[0079] In some embodiments of the present application, the inner wall of the middle section 124 of the guide member 120 is in the shape of a straight cylinder, wherein the preset gap 125 between the outer edge 114 of the fan blade of the wind wheel 110 and the inner wall surface of the middle section 124 is any value between 5 mm and 15 mm. In order to reduce the airflow noise, the preset gap 125 should be as small as possible. Combined with the actual conditions of the guide member 120, such as installation accuracy and size restrictions between the impeller and the guide member 120, the preset gap can be set to any vertical value in the above-mentioned range.

[0080] In some embodiments of the present application, the fan blade 111 has a first end 115 along a first direction and a second end 116 along a second direction, and the first direction and the second direction are both along the rotation axis of the wind wheel 110 and in opposite directions; the first end 115 is located at an edge region on one side of the straight cylindrical flow guide channel 121, and the second end 116 is located at an edge region on the other side of the straight cylindrical flow guide channel 121. In this embodiment, the axial distance of the wind wheel 110 of the air supply assembly 100 is substantially the same as the axial distance of the straight cylindrical flow guide channel 121 of the flow guide member 120, that is, along the rotation axis of the wind wheel 110, the two ends of the fan blade 111 are located at the edge region of the middle section 124.

[0081] In this embodiment, the two ends of the blades 111 of the wind wheel 110 along the axial direction of rotation are roughly located in the edge area of ​​the middle section 124 of the guide member 120, so that the airflow passing through the trailing edge 112 of the blades is mostly restricted to the middle section 124 of the guide member 120. Therefore, the airflow can be prevented from fluctuating in the radial direction of the guide member 120, further preventing the generation of noise.

[0082] The edge area of ​​the straight cylindrical guide channel refers to the partial area connected to the straight cylindrical guide channel. For example, when the guide channel includes an inlet section, an outlet section and an intermediate section, the intermediate section is a straight cylindrical guide channel, and the intermediate section is also connected to the inlet section and the outlet section. The edge area of ​​the straight cylindrical guide channel is the connecting area between the intermediate section and the inlet section, and the connecting area between the intermediate section and the outlet section.

[0083] As for the sources of noise in the air supply assembly 100 of the present invention, one is that after the vortex separates from the fan blade 111, it causes air pressure pulsation at the airflow wake, and when the pulsating air pressure acts on the air supply assembly 100, noise is generated. The other is that after the airflow separates from the trailing edge 112 of the fan blade, the airflow fluctuates in the radial direction of the guide member 120.

[0084] In some embodiments of the present application, the guide channel 121 includes an inlet section 122, an outlet section 123, and an intermediate section 124. The intermediate section 124 is provided between the inlet section 122 and the outlet section 123. The straight-cylindrical guide channel 121 is provided in the intermediate section 124. The outlet section 123 and the inlet section 122 are both trumpet-shaped. The trumpet shape of the outlet section 123 expands outward, and the trumpet shape of the inlet section 122 expands outward.

[0085] In this embodiment, the outlet section 123 and the inlet end are both configured to be trumpet-shaped, which can diffuse the airflow and increase the flow area of ​​the airflow, thereby improving the airflow guiding capability of the air guide.

[0086] In some embodiments of the present application, the outlet section 123 is provided with a first noise reduction structure 130, the first noise reduction structure 130 is connected to the middle section 124, most of the serrated spoiler structure 113 is accommodated in the middle section 124, and the first noise reduction structure 130 is set in the outlet section 123 of the guide member 120. When the wind wheel 110 rotates, the frequency of regular interference between the driven airflow and the surrounding objects is increased, the frequency of the low-frequency noise accumulated by the rotation of the wind wheel 110 is increased, and the rotation noise spike in the same frequency band is reduced, thereby reducing the low-frequency noise during use, so that the user experience can be effectively improved.

[0087] The first noise reduction structure 130 can be a raised portion provided on the inner wall surface of the outlet section 123, or a cut portion, or a combination of a raised portion and a cut portion. The cut portion provided on the inner wall surface of the outlet section 123 has a plane smoothly connected to the inner wall surface, and the connection between the plane and the inner wall surface can be straight, arc-shaped, or curved. When the airflow flows from the inner wall surface of the outlet section 123 to the cut portion, the distance in the direction perpendicular to the rotation axis of the wind wheel 110 changes, that is, the radial distance changes, resulting in increased interference with the airflow, and the rotational noise peak in the same frequency band is reduced, thereby reducing the airflow noise; when multiple cut portions are provided on the inner wall surface of the outlet section 123, or when they are evenly arranged along the axial direction of the guide member 120, the airflow can be subjected to periodic interference on the inner wall surface of the outlet section 123, and the noise peak in the airflow is reduced more significantly.

[0088] The raised portion provided on the inner wall surface of the outlet section 123 has an arc-shaped wall surface and is smoothly connected to the inner wall surface of the outlet section 123. Since the raised portion is provided on the inner wall of the outlet section 123, when the airflow flows from the inner wall surface of the outlet section 123 to the arc-shaped wall surface of the raised portion, the distance in the direction perpendicular to the axial direction of the guide member 120 changes, that is, the radial distance occurs, so that the circulation of the airflow is interfered with, and the rotational noise peak in the same frequency band is reduced, thereby reducing the airflow noise.

[0089] In some embodiments of the present application, a second noise reduction structure 140 may be provided at the inlet end of the guide member 120. The second noise reduction structure 140 is connected to the middle section 124 of the guide member 120. The second noise reduction structure may be a cut portion, a raised portion, or a combination of a cut portion and a raised portion. The technical effect is similar to that of the first noise reduction structure 130 at the outlet end. The airflow is regularly interfered with. When multiple cut portions or raised portions are provided, the interference frequency of the airflow is increased, the frequency of the low-frequency noise accumulated by the rotation of the wind wheel 110 is increased, and the rotation noise spike in the same frequency band is reduced, thereby reducing the low-frequency noise during use.

[0090] In some embodiments of the present application, a plurality of transverse ribs 126 and a plurality of longitudinal ribs 127 are further provided on the outer wall of the guide member 120. The transverse ribs 126 and the longitudinal ribs 127 can improve the connection stiffness of the guide member 120. When the wind wheel 110 rotates at high speed, even if it is impacted by the airflow, the guide member 120 will not vibrate. The plurality of transverse ribs 126 are arranged at intervals, and the plurality of longitudinal ribs 127 are arranged at intervals. The transverse ribs 126 and the longitudinal ribs 127 are staggered on the outer wall of the guide member 120, thereby improving the strength of the guide member 120 to a greater extent. The outer wall of the guide member 120 can be set to a circular structure, a square structure, etc. according to actual conditions.

[0091] The present application also provides an air-conditioning outdoor unit 200, which includes a first shell 210 and an air supply assembly 100 as described in any of the above items. The air supply assembly 100 is arranged in the first shell 210, and the first shell 210 is provided with a first air inlet 212 and a first air outlet 211. The first air outlet 211 is arranged at the top of the first shell 210. The first air outlet 211 of the first shell 210 is arranged opposite to the air outlet of the air supply assembly 100, so that the first shell 210 and the air supply assembly 100 form an independent air supply module.

[0092] The air-conditioning outdoor unit 200 also includes a heat exchanger assembly 220, which is arranged below the air supply module. The heat exchanger assembly 220 is combined to form a heat exchange air duct 221, which is connected to the first air inlet 212 of the first shell 210. In this embodiment, the air-conditioning outdoor unit 200 adopts an upper air outlet structure and the air supply module is arranged above the heat exchanger assembly 220.

[0093] In some embodiments of the present invention, the air-conditioning outdoor unit 200 also includes a second shell 230, the heat exchanger in the heat exchanger assembly 220 is extended along the side wall of the second shell 230, and a second air inlet 231 is also provided on the second shell 230, and the second air inlet 231 is arranged opposite to the heat exchanger. In this embodiment, the second shell 230 and the heat exchanger assembly 220 constitute a heat exchange module, which is arranged below the air supply module, and an air flow path is formed between the second air inlet 231 of the second shell 230 and the first air outlet 211 of the first shell 210, and the air flow passes through at least the heat exchanger, the heat exchange duct 221, the impeller and the guide member 120.

[0094] The air conditioner outdoor unit 200 also includes an electrical control box 240. An opening structure 222 is provided on one side of the heat exchange duct 221 formed by the heat exchanger. The electrical control box 240 is provided in the opening structure 222. The heat exchange duct 221 and the electrical control box 240 together form the heat exchange duct 221.

[0095] In some embodiments of the present invention, the air-conditioning outdoor unit 200 also includes a mesh cover 250, which is arranged at the first air outlet 211 of the first shell 210. A grille structure 251 is provided on the mesh cover 250, and the grille structure 251 is arranged opposite to the wind wheel 110. The grille structure 251 is also connected to the drive assembly 150 of the air supply assembly 100. The drive assembly 150 includes at least a drive shaft, which is connected to the hub of the wind wheel 110 for driving the wind wheel 110 to rotate.

[0096] The third aspect of the present invention further provides an air conditioner, comprising the air conditioner outdoor unit 200 as described in any one of the above items.

[0097] The outdoor unit provided in the present application, including the air supply assembly 100, can also be applied to HVAC equipment, which includes but is not limited to multi-split units, heat pumps, water heaters, swimming pool units, etc.

[0098] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An air supply component, characterized in that: The air supply assembly comprises: A wind wheel, wherein the wind wheel has at least one fan blade, wherein the fan blade has a fan blade trailing edge and a fan blade outer edge, wherein the fan blade outer edge is located on a side of the fan blade away from the rotation axis of the wind wheel, wherein the fan blade trailing edge is connected to the fan blade outer edge, wherein the direction of the fan blade trailing edge is opposite to the rotation direction of the wind wheel, and wherein a spoiler structure is provided on the fan blade trailing edge; A flow guide member, wherein the flow guide member has a flow guide channel, wherein the flow guide channel is sleeved on the outer side of the wind wheel, wherein at least a portion of the inner wall of the flow guide channel is in the shape of a straight cylinder, and a preset gap is provided between the inner wall of the flow guide channel and the outer edge of the fan blade, wherein the preset gap is used to limit the movement of the airflow formed on the fan blade along the radial direction of the flow guide channel, wherein at least a portion of the spoiler structure is accommodated in the portion of the flow guide channel in the shape of a straight cylinder.

2. The air supply assembly according to claim 1, characterized in that: The spoiler structure includes a plurality of concave portions and a plurality of convex portions, and the concave portions and the convex portions are alternately arranged along the extension direction of the trailing edge of the fan blade.

3. The air supply assembly according to claim 2, characterized in that: In the direction of the rotation axis of the wind wheel, the recessed portion and the convex portion have a height difference, wherein all of the plurality of recessed portions are accommodated in the straight cylindrical portion of the guide channel.

4. The air supply assembly according to claim 2, characterized in that: The spoiler structure is arranged in a sawtooth shape.

5. The air supply assembly according to any one of claims 1 to 4, characterized in that: Along the rotation axis direction of the wind wheel, the size of the spoiler structure is L1, and the length of the straight-cylindrical portion of the spoiler structure accommodated in the guide channel is L2, wherein L2 / L1 is greater than 0.

8.

6. The air supply assembly according to any one of claims 1 to 4, characterized in that: The fan blade has a first end and a second end along the rotation axis direction of the wind wheel; The first end is located at an edge region of one end of the straight-cylindrical flow guiding channel, and the second end is located at an edge region of the other end of the straight-cylindrical flow guiding channel.

7. The air supply assembly according to claim 1, characterized in that: The preset gap is any value between 5 mm and 15 mm.

8. The air supply assembly according to any one of claims 1 to 4, characterized in that: The guide channel includes an inlet section, an outlet section and an intermediate section, wherein the intermediate section is arranged between the inlet section and the outlet section, and the intermediate section is arranged in a straight cylindrical shape. Along the direction from the inlet section to the outlet section, the inner diameter of the outlet section gradually increases, and along the direction from the inlet section to the outlet section, the inner diameter of the inlet section gradually decreases.

9. The air supply assembly according to claim 8, characterized in that: The outlet section is provided with a first noise reduction structure, and most of the sawtooth spoiler structures are accommodated in the middle section.

10. The air supply assembly according to claim 9, characterized in that: The inlet section is provided with a second noise reduction structure.

11. The air supply assembly according to any one of claims 1 to 4, characterized in that: The outer wall of the flow guide is provided with reinforcing ribs.

12. The air supply assembly according to claim 11, characterized in that: The outer wall of the guide member includes a plurality of transverse ribs and a plurality of longitudinal ribs. The plurality of transverse ribs are arranged at intervals along the rotation axis direction of the wind wheel, and the plurality of longitudinal ribs are arranged at intervals along the circumference of the guide member. The transverse ribs and the longitudinal ribs are cross-arranged on the outer wall of the guide member.

13. An air conditioner outdoor unit, characterized in that: The air conditioner outdoor unit comprises: A first shell, wherein the first shell is provided with a first air outlet and a first air inlet, and the first air outlet is provided at the top of the shell; The air supply assembly described in any one of claims 1-12 is arranged in the first shell, and the air supply assembly has an air outlet, and the air outlet is arranged opposite to the first air outlet.

14. The air conditioner outdoor unit according to claim 13, characterized in that: The air conditioner outdoor unit further includes a heat exchanger assembly, which is disposed below the first shell. The heat exchanger assembly is enclosed to form a heat exchange air duct, which is communicated with the first air inlet.

15. The air conditioner outdoor unit according to claim 14, characterized in that: The air conditioner outdoor unit also includes: a second shell, the heat exchanger assembly being arranged on a side wall of the second shell; An electric control box is arranged on the side wall of the second shell, and the heat exchanger and the electric control box are surrounded to form the heat exchange air duct.

16. The air conditioner outdoor unit according to any one of claims 13 to 15, characterized in that: The air conditioner outdoor unit also includes: A mesh cover, the mesh cover is arranged at the first air outlet of the first shell, the mesh cover has a grille structure, and the grille structure is arranged opposite to the wind wheel; The air supply assembly also includes a driving assembly, the driving assembly is connected to the grille structure, and a driving shaft of the driving assembly is connected to the wind wheel.

17. An air conditioner, characterized in that: The air conditioner comprises the air conditioner outdoor unit according to any one of claims 13 to 16.

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