Air conditioner outdoor unit and air conditioner

Abstract

The application provides an air conditioner outdoor unit and an air conditioner. The air conditioner outdoor unit comprises a cabinet, an air inlet and an air outlet, a refrigerant circulation device arranged in the cabinet, and a fan wheel arranged in the cabinet and opposite to the air outlet. The refrigerant circulation device interferes with the airflow path between the air inlet and the air outlet. The projection area of the part of the refrigerant circulation device on the fan wheel is along the rotation axis of the fan wheel. The fan wheel is provided with at least one fan blade. The installation angle of the fan blade at any element level in the projection area is greater than the installation angle of the element level outside the projection area. The air conditioner outdoor unit improves the structure of the fan wheel to weaken the influence of the refrigerant circulation device in the cabinet on the fan wheel, so that the working of the fan blade is more uniform, and the working capacity of the fan wheel is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an outdoor unit for an air conditioner, and also to an air conditioner. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In the outdoor unit of HVAC equipment, various power components are usually installed inside the outdoor unit. When the power components are located in the airflow path of the outdoor unit, the power components will affect the working efficiency of the outdoor unit's fan wheel. This will manifest as uneven work of the fan blades, affecting the working capacity of the fan wheel, and even increasing aerodynamic noise. Summary of the Invention

[0004] The objective of this invention is to at least solve the technical problem of how to improve the work capacity of the fan impeller in an outdoor air conditioning unit. This objective is achieved through the following technical solution:

[0005] This invention provides an outdoor unit for an air conditioner, the outdoor unit comprising:

[0006] The chassis is provided with an air inlet and an air outlet, and an airflow path is formed between the air inlet and the air outlet;

[0007] A refrigerant circulation device is disposed inside the chassis, and the refrigerant circulation device has a component located on the airflow path;

[0008] The impeller is disposed inside the casing and is positioned opposite the air outlet. Along the rotation axis of the impeller, the component part has a projection area on the impeller. The impeller has at least one fan blade. The mounting angle of the fan blade at the element level within the projection area is a first mounting angle, and the mounting angle of the fan blade at the element level outside the projection area is a second mounting angle. Either the first mounting angle is greater than the second mounting angle.

[0009] The outdoor unit of the air conditioner of the present invention improves the impeller to reduce the influence of the refrigerant circulation device inside the casing on the work done by the impeller. By improving the installation angle of the projection area on the impeller by the refrigerant circulation device that interferes with the airflow path inside the casing, the installation angle of the impeller blades at any element level in the projection area is made greater than the installation angle of the element level outside the projection area, so that the work done by the impeller blades is more uniform and the work capacity of the impeller is improved.

[0010] In addition, the outdoor unit of the air conditioner according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, a first circular region is provided in a plane perpendicular to the axis of rotation, centered at a point on the axis of rotation.

[0012] The area of ​​the first circular region is greater than or equal to the projection region, and the projection region is located within the first circular region. The outer edge of the first circular region and the outer edge of the projection region have at least one intersection point.

[0013] The mounting angle of the fan blade at the element level within the first circular region is the third mounting angle, and the mounting angle of the fan blade at the element level outside the first circular region is the fourth mounting angle, wherein any of the third mounting angles is greater than the fourth mounting angle.

[0014] In some embodiments of the present invention, the refrigerant circulation device includes a compressor and a liquid storage tank connected to the compressor, the compressor and the liquid storage tank being located on one side of the impeller along the direction of the rotation axis.

[0015] In some embodiments of the present invention, the wind turbine has at least one blade, the blade has a trailing edge and an outer edge, the outer edge is the side of the blade away from the rotation axis of the wind turbine, the trailing edge is connected to the outer edge, the orientation of the trailing edge is opposite to the rotation direction of the wind turbine, and a turbulence structure is provided on the trailing edge.

[0016] In some embodiments of the present invention, the outdoor unit of the air conditioner further includes a flow guide, which is sleeved on the outside of the impeller. The flow guide includes an inlet section, an outlet section, and a middle section. The middle section is connected between the inlet section and the outlet section, and at least part of the turbulence structure is disposed in the middle section.

[0017] In some embodiments of the present invention, the flow guide is provided with a noise reduction structure, which is formed in the outlet section and / or the inlet section.

[0018] In some embodiments of the present invention, the refrigerant circulation device further includes a heat exchanger disposed inside the casing and located on the side of the impeller away from the air outlet.

[0019] In some embodiments of the present invention, the heat exchanger extends circumferentially along the side wall of the chassis and encloses a heat exchange channel.

[0020] In some embodiments of the present invention, the air outlet is located at the upper end of the chassis, the air inlet is located on the side wall of the chassis, and both the air inlet and the air outlet are connected to the heat exchange channel.

[0021] A second aspect of the present invention also provides an air conditioner comprising an outdoor unit as described in any of the preceding claims. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 BB-direction sectional view;

[0025] Figure 3 This is a schematic diagram of the fan wheel structure of an outdoor air conditioner unit according to an embodiment of the present invention, showing the projected area and the first circular area;

[0026] Figure 4 This is a schematic diagram of the structure of the fan wheel of an outdoor air conditioner unit according to an embodiment of the present invention, showing the intersection of the base circle of the fan wheel with the leading and trailing edges of the fan blades;

[0027] Figure 5 The installation angle of the fan wheel of an outdoor air conditioner unit according to an embodiment of the present invention is shown.

[0028] Figure 6 This is a schematic diagram of the air guide component of an air conditioner outdoor unit according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of an outdoor air conditioner unit according to an embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 100. Air conditioner outdoor unit;

[0032] 110. Chassis; 111. Air inlet; 112. Air outlet; 113. Airflow path;

[0033] 120. Refrigerant circulation device; 121. Compressor; 122. Liquid receiver; 123. Heat exchanger;

[0034] 130. Wind turbine; 131. Fan blade; 1311. Trailing edge of fan blade; 1312. Turbine structure; 132. Projected area; 133. First circular area; 134. Inner tangent point; α. Mounting angle of the elementary level;

[0035] A. The direction of rotation of the wind turbine;

[0036] 140. Flow guide; 141. Inlet section; 142. Outlet section; 143. Intermediate section; 144. Flow guide channel; 145. Noise reduction structure. Detailed Implementation

[0037] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0038] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0040] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0041] The present invention provides an outdoor unit 100 for an air conditioner, which includes a casing 110. The casing 110 is provided with an air inlet 111 and an air outlet 112. An airflow path 113 is formed between the air inlet 111 and the air outlet 112 of the casing 110. A fan wheel 130 is also provided inside the casing 110. Under the action of the fan wheel 130, air outside the casing 110 enters through the air inlet 111, flows along the airflow path 113 to the air outlet 112, and is discharged outside the casing 110.

[0042] Since the outdoor unit 100 of the air conditioner needs to be equipped with different power components, such as compressor 121, electrical control box, heat exchanger 123, etc., when these power components interfere with the airflow path 113, it will affect the working efficiency of the impeller 130.

[0043] In particular, when the air outlet 112 of the outdoor unit 100 is located at the top of the casing 110 and the air inlet 111 is located at the side of the casing 110, the power components inside the casing 110 are likely to affect the working efficiency and working capacity of the fan blades 131 on the impeller 130.

[0044] To reduce the aforementioned impact on the impeller 130, the outdoor unit 100 of the air conditioner of the present invention further improves the impeller 130. At least one fan blade 131 is provided on the impeller 130. By adjusting the installation angle of the fan blade 131, the work done in different areas of the fan blade 131 is made more uniform, and there is no stagnant airflow area in the upper part of the impeller 130. Specifically, along the direction of the rotation axis of the impeller 130, a portion of the refrigerant circulation device 120 has a projection area 132 on the impeller 130. The installation angle α of the basic unit level of the fan blade 131 of the impeller 130 within the projection area 132 is different from the installation angle α of the basic unit level outside the projection area 132.

[0045] To reduce the impact of certain areas of the power components on the work capacity of the fan blade 131, the mounting angle α of the elementary level of the fan blade 131 within the projection area 132 is made greater than the mounting angle α of the elementary level outside the projection area 132. In particular, when any mounting angle of the elementary level of the fan blade 131 within the projection area 132 is greater than the mounting angle α of the elementary level outside the projection area 132, the impact of the power components on the work of the impeller 130 can be significantly reduced. This can eliminate the stagnant airflow area in some areas near the impeller 130, enhance the work capacity of the fan blade 131 of the impeller 130, and improve the work efficiency of the fan blade 131 of the impeller 130.

[0046] It should be noted that the installation angle α of the basic level of the impeller 130 of the outdoor unit 100 of the air conditioner in this invention is explained as follows: (in conjunction with...) Figure 4 and Figure 5 Along the rotation direction A of the wind turbine 130, point O1 on the leading edge of the blade 131 of the wind turbine 130 corresponds to point O2 on the trailing edge 1311 of the blade as the wind turbine 130 rotates. The arc between O1 and O2 is stretched to form a straight line O1O2. The angle α formed by the plane perpendicular to the rotation axis of the wind turbine 130 and the straight line O1O2 is the element-level installation angle involved in the embodiment of the present invention.

[0047] like Figure 4 As shown, in a plane perpendicular to the rotation axis of the wind turbine 130, a circle is formed with a point on the rotation axis as the center and any distance between the rotation axis and the inner or outer edge of the fan blade 131 as the radius. The intersection of this circle and the leading edge of the fan blade 131 is point O1, and the intersection of this circle and the trailing edge 1311 of the fan blade is point O2. Connecting points O1 and O2 on the fan blade 131 yields a straight line O1O2, as shown. Figure 5 As shown, the angle between the straight line O1O2 and the plane perpendicular to the axis of rotation is α, which is called the mounting angle α of the elementary level.

[0048] The outdoor unit 100 of the air conditioner provided in this embodiment improves the structure of the fan blade 131 of the impeller 130 to overcome the influence of the power components in the casing 110 of the outdoor unit 100 on the work done by the impeller. The technical effect achieved by the structural improvement of the fan blade 130 of the outdoor unit 100 of the present invention is further explained as follows: The air inlet 111 of the outdoor unit 100 is set on the casing 110. The airflow path 113 between the air inlet 111 and the air outlet 112 of the outdoor unit 100 is interfered with by the refrigerant circulation device 120, which affects the flow of airflow to the fan blade 131 of the impeller 130, resulting in a weakening of the work done by the fan blade 131. By adjusting the installation angle of the fan blade 131 in the interfered area, the work done by the fan blade 131 in each area is made consistent, thereby improving the overall work done by the impeller 130 and eliminating the influence of the power components on the work done and efficiency of the impeller 130.

[0049] When a cover or top cover is installed at the air outlet 112 of the casing 110, due to the influence of the power components on the airflow, there is a large flow stagnation area in the cover or top cover, which reduces the work done in some areas of the fan blade 131. The improved impeller 130 of the present invention can avoid the formation of the above-mentioned airflow stagnation area, thereby improving the capacity of the outdoor unit 100 of the air conditioner and improving the work efficiency of the impeller 130.

[0050] The outdoor unit 100 of the air conditioner of the present invention, by adjusting the installation angle of the fan blade 131 of the impeller 130, can improve the working capacity of the fan blade 131, reduce the radial flow phenomenon on the surface of the fan blade 131, and reduce aerodynamic noise.

[0051] In some embodiments of the present invention, when the outdoor unit 100 of the air conditioner is top-discharged, most of the power components are located on the bottom wall of the casing. For example, the heat exchanger 123 is located at the air inlet 111, and the compressor 121 assembly is located on the bottom wall and connected to the heat exchanger 123 through pipelines. At this time, the impeller 130 can be located between the air outlet 112 and the refrigerant circulation device 120. Under the action of the impeller 130, the airflow enters the casing 110 through the air inlet 111. Under the interference of the compressor 121 assembly, the airflow flows to the impeller 130 and the air outlet 112. By adjusting the installation angle of the fan blades 131 of the impeller 130, the influence of the compressor 121 assembly on the work done by the impeller 130 can be largely eliminated.

[0052] To eliminate the interference of the refrigerant circulation device 120 on the airflow path 113, in the outdoor unit 100 of this embodiment, the area where the mounting angle of the basic element needs to be adjusted is appropriately enlarged. Specifically, in a plane perpendicular to the rotation axis of the impeller 130, a first circular area 133 is set with the rotation axis as the center. The area of ​​the first circular area 133 is at least greater than or equal to the projection area 132 in the above embodiment. The projection area 132 is a part of the power element that interferes with the airflow path 113. The projection formed on the impeller 130 along the rotation axis direction of the impeller 130, the first circular area 133 and the projection area 132 have at least one internal tangent point 134. In this embodiment, the mounting angle α of any basic element of the fan blade 131 in the first circular area 133 is set to be greater than the mounting angle α of the basic element of the fan blade 131 outside the first circular area 133. By appropriately increasing the adjustment area of ​​the mounting angle of the fan blade 131, the influence of the power element on the impeller 130 is further reduced.

[0053] It should be noted that, in this embodiment, the power element forming the projection area 132 of the outdoor unit 100 of the air conditioner can be the compressor 121 and the tank connected to the compressor 121, or it can be the electrical control box and heat dissipation element in the power element.

[0054] In one embodiment of the outdoor unit 100 of the air conditioner of the present invention, the compressor 121 and the liquid storage tank 122 connected to the compressor 121 are disposed on the bottom wall of the casing 110 and are disposed opposite to the impeller 130. Along the rotation axis of the impeller 130, the compressor 121 and the liquid storage tank 122 connected to the compressor 121 are projected to form the above-mentioned projection area 132. By adjusting the installation angle of the fan blades 131 in the projection area 132, the influence of the compressor 121 and the liquid storage tank 122 on the airflow is improved.

[0055] The air conditioner outdoor unit 100's impeller 130 can be configured as an axial flow impeller 130. The axial flow impeller 130 is provided with at least one fan blade 131, and can also be provided with three fan blades 131, which are evenly distributed along the rotation direction A of the axial flow impeller 130. The axial flow impeller 130 also includes a hub, and the three fan blades 131 are connected to the hub. The installation angle of each fan blade 131 within the projection area 132 or the first circular area 133 is adjusted so that the installation angle of any element level within it is greater than the installation angle outside the projection area 132 or the first circular area 133. After adjusting each fan blade 131 of the impeller 130, the overall work capacity of the impeller 130 is improved, which not only improves the work efficiency, but also reduces the formation of aerodynamic noise.

[0056] Wherein, the area of ​​the first circular region 133 is greater than or equal to the area of ​​the projection region 132, the outer edge of the first circular region 133 and the outer edge of the projection region 132 have at least one internal tangent point 134, and the mounting angle α of any element level of the fan blade 131 within the first circular region 133 is greater than the mounting angle α of the element level outside the first circular region 133.

[0057] In order to reduce the noise that may be generated during the operation of the impeller 130, a turbulence structure 1312 is provided on the fan blade 131 of the impeller 130 of the air conditioner outdoor unit 100 of the present invention. Along the rotation direction A of the impeller 130, a fan blade trailing edge 1311 is formed in the region of the fan blade trailing edge 1311. The turbulence structure 1312 is provided in the region of the fan blade trailing edge 1311 to prevent noise from being generated when the airflow leaves the fan blade 131.

[0058] The turbulence structure 1312 can be an uneven area formed on the trailing edge 1311 of the fan blade. When the airflow moves on the fan blade 131, it can prevent the airflow from forming vortices on the fan blade 131, thereby reducing the possibility of noise generated during the flow.

[0059] A guide member 140 can also be provided on the outside of the impeller 130. The guide member 140 has a guide channel 144. The guide channel 144 is sleeved on the outside of the impeller 130, and a preset gap is provided between the inner wall of part of the guide channel 144 and the outer edge of the fan blade 131 of the impeller 130 to prevent noise from being generated between the outer edge of the impeller 130 and the inner wall of the guide channel 144. Specifically, the preset gap can be set to any value between 5mm and 15mm.

[0060] More specifically, the flow channel 144 may be provided with an inlet section 141, an intermediate section 143 and an outlet end. The intermediate section 143 is located between the inlet section 141 and the outlet section 142. A turbulence structure 1312 may be provided at the inlet end, the outlet section 142 and the intermediate section 143 respectively to reduce the formation of noise.

[0061] In some embodiments of this application, at least part of the middle section 143 of the flow channel 144 is set as a straight cylinder, and the fan blade 131 of the impeller 130 is set in the straight cylinder flow channel 144. The turbulence structure 1312 on the fan blade 131 of the impeller 130 can also be set in the straight cylinder flow channel 144 to reduce the possibility of noise formation.

[0062] An uneven area is provided at the trailing edge 1311 of the fan blade to disperse the energy of the vortex formed on the fan blade 131, thereby preventing the large vortex from generating noise. A preset gap is provided between the guide 140 and the outer edge of the fan blade 131 of the impeller 130 to prevent the vortex on the fan blade 131 from detaching, thus preventing the formation of pulsating air pressure after the vortex detaches, and thus preventing noise generation.

[0063] For the uneven area at the trailing edge 1311 of the fan blade, it can be configured with a structure having concave and convex parts. Multiple concave and convex parts are provided at the trailing edge 1311 of the fan blade to disperse the energy of the eddy current. Alternatively, multiple concave and multiple convex parts can be alternately configured as serrated.

[0064] In some embodiments of this application, a first turbulence structure is provided at the outlet section 142 of the guide 140. The first turbulence structure is connected to the middle section 143, and most of the serrated turbulence structure 1312 is housed in the middle section 143. By providing the first turbulence structure at the outlet section 142 of the guide 140, when the impeller 130 rotates, the frequency of the 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 impeller 130 is increased, and the peak of rotational noise in the same frequency band is reduced, thereby reducing the low-frequency noise during use and effectively improving the user experience.

[0065] The first turbulence structure can be a protrusion on the inner wall of the outlet section 142, a cross-section, or a combination of a protrusion and a cross-section. The cross-section on the inner wall of the outlet section 142 has a plane that is smoothly connected to the inner wall. The connection between the plane and the inner wall can be straight, curved, or arc-shaped. When the airflow flows from the inner wall of the outlet section 142 to the cross-section, the distance in the direction perpendicular to the rotation axis of the impeller 130 changes, i.e., the radial distance changes, which increases the interference of the airflow and reduces the rotational noise spikes in the same frequency band, thereby reducing airflow noise. When multiple cross-sections are provided on the inner wall of the outlet section 142, or when they are uniformly arranged along the axial direction of the guide 140, the airflow can be periodically interfered with on the inner wall of the outlet section 142, and the noise spikes in the airflow are reduced more significantly.

[0066] The protrusion provided on the inner wall of the outlet section 142 has an arc-shaped wall surface and is smoothly connected to the inner wall surface of the outlet section 142. Because the protrusion is provided on the inner wall of the outlet section 142, when the airflow flows from the inner wall surface of the outlet section 142 to the arc-shaped wall surface of the protrusion, the distance in the direction perpendicular to the axial direction of the guide 140 changes, that is, the radial distance occurs, which causes the airflow to be interfered with, and the rotational noise spikes in the same frequency band are reduced, thereby reducing airflow noise.

[0067] In some embodiments of this application, a second turbulence structure 1312 can be provided at the inlet end of the guide 140. The second turbulence structure 1312 is connected to the middle section 143 of the guide 140. The second noise reduction structure 145 can be a cut surface, a protrusion, or a combination of cut surface and protrusion. Similar to the technical effect of the first turbulence structure at the outlet end, the airflow is subject to regular interference. When multiple cut surfaces or protrusions are provided, the interference frequency of the airflow is increased, the frequency of the low-frequency noise accumulated by the rotation of the impeller 130 is increased, and the rotation noise spikes in the same frequency band are reduced, thereby reducing the low-frequency noise during use.

[0068] In the above different embodiments, an embodiment is given in which a turbulence structure 1312 is provided on the fan blade 131 of the wind turbine 130, and an embodiment is given in which a guide member 140 with a guide channel 144 is provided on the outside of the wind turbine 130, both in order to prevent the fan blade 131 of the wind turbine 130 from generating noise during rotation.

[0069] The air conditioner outdoor unit 100 provided by the present invention not only provides an implementation method for improving the working capacity of the impeller 130, but also provides an implementation method for improving the working efficiency of the impeller 130 while avoiding noise generation.

[0070] In the outdoor unit 100 of the air conditioner, the power components of the compressor 121 and the tank group are located at the inlet of the air duct system. The top cover at the outlet of the impeller 130 has a large flow stagnation area, which weakens the work done by the fan blades 131 that interfere with its projected surface. Simultaneously, due to the influence of the incoming flow disturbance, the work done by different element-level cross-sections on the surface of the fan blades 131 is uneven, and radial flow is exacerbated, affecting the work capacity and efficiency of the fan blades 131 and increasing aerodynamic noise. This invention optimizes the fan system design in the outdoor unit 100 of the air conditioner, specifically optimizing the blade profile of the fan blades 131. In particular, it strengthens the work capacity of the area affected by the interference of the compressor 121 and the tank group in the air duct system, suppressing the influence of the incoming flow disturbance on the fan blades 131, enhancing the work capacity of the fan blades 131, reducing radial flow on the surface of the fan blades 131, improving its efficiency, and reducing its aerodynamic noise.

[0071] In some embodiments of the present invention, the outdoor unit 100 of the air conditioner further includes a heat exchanger 123, which is disposed inside the casing 110 and located below the impeller 130. The heat exchanger 123 forms a heat exchange duct, which is connected to the air outlet 112 of the casing 110. Under the action of the impeller 130, the air in the heat exchange duct is discharged through the air outlet 112 of the casing 110. The outer side of the heat exchanger 123 is opposite to the air inlet 111 on the casing 110, thereby forming an airflow path 113 between the air inlet 111 and the air outlet 112 of the casing 110. The airflow passes through at least the heat exchanger 123, the heat exchange duct, the impeller 130, and the guide 140 disposed outside the impeller 130, and is discharged through the air outlet 112 of the casing 110.

[0072] The heat exchanger 123 inside the casing 110 of the outdoor unit 100 of the air conditioner can also be located on the side of the impeller 130 away from the air outlet 112.

[0073] In some embodiments of the present invention, the heat exchanger 123 extends along the wall of the casing 110, and the refrigerant circulation device 120 is housed within the space enclosed by the heat exchanger 123, including a compressor 121 and a liquid storage tank 122 connected to the compressor 121, and may also include an electrical control box and a heat dissipation element connected to the electrical control box. In this embodiment, the heat exchanger 123 includes a G-type heat exchanger 123 disposed below the impeller 130, and this arrangement is suitable for the top-discharge air conditioner outdoor unit 100, that is, the air outlet 112 is disposed at the top of the casing 110.

[0074] In some embodiments of the present invention, the air guide 140 is provided with a noise reduction structure 145, which is formed in the outlet section 142 or the inlet section 141. The noise reduction structure 145 can be the first turbulence structure or the second turbulence structure 1312 as described in the above embodiments. By setting the noise reduction structure 145, the air conditioner outdoor unit 100 can achieve the effect of quiet operation. While improving the airflow capacity, no new airflow noise is generated.

[0075] In some embodiments of the present invention, the air outlet 112 of the outdoor unit 100 of the air conditioner is located at the upper end of the casing 110, and the air inlet 111 is located on the side wall of the casing 110, with at least a portion of the air inlet 111 being arranged opposite to the heat exchanger 123.

[0076] The present invention also provides an air conditioner, which includes an outdoor unit 100 as described in any of the preceding claims.

[0077] 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 variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An outdoor unit for an air conditioner, characterized in that, The outdoor unit of the air conditioner includes: The chassis is provided with an air inlet and an air outlet, and an airflow path is formed between the air inlet and the air outlet; A refrigerant circulation device is disposed inside the chassis, and the refrigerant circulation device has a component located on the airflow path; The impeller is disposed inside the casing and is positioned opposite the air outlet. Along the rotation axis of the impeller, the component part has a projection area on the impeller. The impeller has at least one fan blade. The mounting angle of the fan blade at the element level within the projection area is a first mounting angle, and the mounting angle of the fan blade at the element level outside the projection area is a second mounting angle. Either the first mounting angle is greater than the second mounting angle. The fan blade has a trailing edge and an outer edge. The outer edge is the side of the fan blade that is away from the rotation axis of the wind turbine. The trailing edge is connected to the outer edge. The orientation of the trailing edge is opposite to the rotation direction of the wind turbine. A turbulence structure is provided on the trailing edge. The outdoor unit of the air conditioner also includes a flow guide, which is sleeved on the outside of the fan wheel. The flow guide includes an inlet section, an outlet section and a middle section. The middle section is connected between the inlet section and the outlet section. At least part of the turbulence structure is located in the middle section, which is cylindrical.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, In a plane perpendicular to the axis of rotation, a first circular region is defined with a point on the axis of rotation as its center. The area of ​​the first circular region is greater than or equal to the projection region, and the projection region is located within the first circular region. The outer edge of the first circular region and the outer edge of the projection region have at least one intersection point. The mounting angle of the fan blade at the element level within the first circular region is the third mounting angle, and the mounting angle of the fan blade at the element level outside the first circular region is the fourth mounting angle, wherein any of the third mounting angles is greater than the fourth mounting angle.

3. The outdoor unit of the air conditioner according to claim 2, characterized in that, The refrigerant circulation device includes a compressor and a liquid storage tank connected to the compressor, wherein the compressor and the liquid storage tank are located on one side of the impeller along the direction of the rotation axis.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The flow guide is provided with a noise reduction structure, which is formed in the outlet section and / or the inlet section.

5. The outdoor unit of the air conditioner according to any one of claims 1-3, characterized in that, The refrigerant circulation device also includes a heat exchanger, which is located inside the casing and on the side of the impeller away from the air outlet.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, The heat exchanger extends circumferentially along the side wall of the chassis and encloses it to form a heat exchange channel.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, The air outlet is located at the upper end of the chassis, and the air inlet is located on the side wall of the chassis. Both the air inlet and the air outlet are connected to the heat exchange channel.

8. An air conditioner, characterized in that, The air conditioner includes the outdoor unit of the air conditioner as described in any one of claims 1-7.

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