Air conditioner outdoor unit

Abstract

The utility model discloses an outdoor unit of an air conditioner, which comprises a shell, a heat exchanger and a heat exchanger, the heat exchanger is arranged in the mounting cavity of the shell; the fan assembly is arranged in the mounting cavity and used for driving airflow to flow through the heat exchanger for heat exchange; the draught fan assembly comprises a draught fan; the fan comprises a hub which is in transmission connection with the fan; the at least two fan blades are arranged on the outer edge of the peripheral side of the hub; wherein the fan blade is provided with a front edge part located on the front side and a rear edge part located on the rear side in the rotating direction of the fan blade, the front edge part is provided with a plurality of first turbulent flow parts arranged at intervals, and the first turbulent flow parts are pits or protrusions. The first turbulent flow part is arranged on the front edge part of the fan blade, so that the aerodynamic efficiency can be improved, and the power and noise under the same air volume are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an outdoor unit of an air conditioning. Background Art

[0002] With the continuous improvement of living standards, air conditioners have become more and more popular. Consumers have higher and higher requirements for the quality and performance of air conditioners. At present, the outdoor unit of the air conditioner generally has a large noise, which is mainly composed of motor noise and fan noise.

[0003] Since the outdoor unit of the air conditioner generally uses an axial flow fan for forced convection heat exchange, the fan noise is generated by the axial flow fan, and the fan noise is closely related to the vortex generated by the impeller in the air flow. The air intake volume of the axial flow fan is a major factor affecting the fan's working efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an air conditioner outdoor unit, wherein a first spoiler is provided at the leading edge of a fan blade, which can improve aerodynamic efficiency, which is manifested as reducing power and noise under the same air volume.

[0005] According to the first aspect of the present invention, the outdoor unit of an air conditioner comprises: a shell having an installation cavity arranged therein; a heat exchanger arranged in the installation cavity of the shell; a fan assembly arranged in the installation cavity and used to drive an airflow to flow through the heat exchanger for heat exchange; the fan assembly comprises: a fan; a fan comprising: a hub, which is transmission-connected to the fan; at least two blades, at least two of which are arranged on the peripheral outer edge of the hub; wherein the blade has a leading edge portion located on the front side and a trailing edge portion located on the rear side in the rotation direction of the blade, and a plurality of first spoilers arranged at intervals are arranged on the leading edge portion, and the first spoilers are pits or protrusions.

[0006] According to the air conditioner outdoor unit of the embodiment of the utility model, a first spoiler is provided at the leading edge of the fan blade, which can improve the aerodynamic efficiency, which is manifested in reducing the power and noise at the same air volume.

[0007] According to some embodiments of the present invention, the radius of the first spoiler is r and the depth or height is h1, and r and h1 respectively satisfy the relationship: 2mm≤r≤10mm, 0.5mm≤h1≤5mm.

[0008] According to some embodiments of the present invention, the center distance between two adjacent first spoilers is L, and L satisfies the relationship: 5mm≤L≤20mm.

[0009] According to some embodiments of the utility model, the fan blade has a blade root and a blade tail, the blade root of the fan blade is the part connected to the hub, and the blade tail is the part away from the hub; and the spacing between two adjacent first spoilers near the blade root is smaller than the spacing between two adjacent first spoilers near the blade tail.

[0010] According to some embodiments of the present invention, the trailing edge portion is formed with a notch extending from the trailing edge portion to the leading edge portion, and the notch is V-shaped.

[0011] According to the second aspect of the embodiment of the utility model, the outdoor unit of the air conditioner includes: a shell having an installation cavity arranged therein; a heat exchanger arranged in the installation cavity of the shell; a fan assembly arranged in the installation cavity, for driving the airflow to flow through the heat exchanger for heat exchange; the fan assembly includes: a fan; a fan including: a hub, which is transmission-connected to the fan; at least two blades, at least two of which are arranged on the peripheral outer edge of the hub; wherein the surface of the negative pressure side of the blade is the suction surface and the surface of the positive pressure side of the blade is the pressure surface, and a plurality of first spoilers arranged at intervals are arranged on the pressure surface.

[0012] According to some embodiments of the utility model, the fan blade has a leading edge portion located on the front side and a trailing edge portion located on the rear side in the rotation direction of the fan blade, and the suction surface or the pressure surface is provided with a second spoiler portion on the trailing edge portion, and the second spoiler portion protrudes relative to the suction surface or the pressure surface.

[0013] According to some embodiments of the utility model, the second spoiler extends from the connection between the fan blade and the hub to the other side of the fan blade away from the hub; or, there are multiple second spoilers, and the multiple spoilers are spaced apart on the trailing edge.

[0014] According to some embodiments of the present invention, the protruding height of the second spoiler is d, and d satisfies the relationship: 1mm≤d≤15mm.

[0015] According to some embodiments of the present invention, the thickness of the second spoiler is h2, and h2 satisfies the relationship: 1mm≤h2≤10mm.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of a fan in one direction according to the first embodiment of the utility model;

[0019] Figure 2 is a structural schematic diagram of the fan according to the first embodiment of the utility model in another direction;

[0020] Figure 3 is a schematic structural diagram of the fan according to the first embodiment of the utility model in another direction;

[0021] Figure 4 is a structural schematic diagram of the fan according to the first embodiment of the utility model in another direction;

[0022] Figure 5 It is a schematic structural diagram of a spoiler in one direction according to the first embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of another direction of the spoiler according to the first embodiment of the utility model;

[0024] Figure 7 This is a schematic structural diagram of the spoiler according to the first embodiment of the utility model in another direction;

[0025] Figure 8 This is a schematic structural diagram of a spoiler in one direction according to the second embodiment of the utility model;

[0026] Fig. 9 is a schematic structural diagram of a fan according to Embodiment 3 of the present utility model;

[0027] Fig.10 yes Fig. 9 Schematic diagram of the structure of the fan of the fourth embodiment of the present invention.

[0028] Reference numerals:

[0029] 10. Fan; 11. Hub; 12. Blade; 13. Leading edge; 14. Trailing edge; 15. First spoiler; 16. Second spoiler; 17. Notch; 18. Suction surface; 19. Pressure surface; DETAILED DESCRIPTION

[0030] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0031] Reference below Figure 1-Figure 10 An air conditioner indoor unit according to an embodiment of the present invention is described.

[0032] The outdoor unit of the air conditioner comprises: a shell, a heat exchanger and a fan assembly. An installation cavity is arranged inside the shell, and the heat exchanger and the fan assembly are both arranged in the installation cavity.

[0033] The air conditioner outdoor unit also includes: a compressor, which is provided with an exhaust port and a return port. The compressor compresses the refrigerant to convert the low-pressure refrigerant into a high-pressure gaseous refrigerant. The low-pressure refrigerant enters the compressor from the return port. After the compressor compresses the low-pressure refrigerant into a high-pressure refrigerant, the high-pressure refrigerant is discharged from the exhaust port. The refrigerant releases heat at the condenser, absorbs heat at the evaporator after decompression, and finally enters the compressor from the return port.

[0034] The heat exchanger is arranged in the installation cavity of the shell. Outdoor air enters the shell, and the outdoor air can exchange heat with the refrigerant transmitted in the heat exchanger. The outdoor air entering the shell flows to the heat exchanger to exchange heat with the refrigerant.

[0035] The heat exchanger works as a condenser in the cooling mode of the mobile air conditioner, so that the refrigerant compressed by the compressor dissipates heat to the outdoor air through the heat exchanger and condenses. The heat exchanger works as an evaporator in the heating mode of the mobile air conditioner, so that the decompressed refrigerant absorbs heat from the outdoor air through the heat exchanger and evaporates.

[0036] The arrangement and connection of the compressor and the heat exchanger in the shell can be carried out in any existing manner, which should be known to those skilled in the art. Therefore, in order not to cover up and blur the focus of the utility model, this document does not specifically limit or describe in detail the arrangement position and connection method of the compressor and the heat exchanger.

[0037] The fan assembly is arranged in the installation cavity, and is used to drive the airflow to flow through the heat exchanger for heat exchange. The fan assembly is located in the installation cavity. Under the drive of the fan assembly, outdoor air enters the housing from the outside and flows to the heat exchanger. After the outdoor air exchanges heat with the refrigerant at the heat exchanger, the refrigerant is discharged to the outside under the drive of the fan 10.

[0038] The fan assembly includes: a blower and a fan 10, the blower and the fan 10 are transmission-connected, the blower drives the fan 10 to rotate, so that outdoor air continuously enters the shell and flows to the heat exchanger, so that the outdoor air exchanges heat with the refrigerant at the heat exchanger to realize the operation of the air conditioner outdoor unit.

[0039] The housing has an air outlet for discharging air in the housing and an air inlet for sucking air outside the housing, and the air inlet and the air outlet are arranged at intervals. The fan 10 can be arranged opposite to the air outlet.

[0040] The fan 10 comprises a hub 11, which is connected to the fan in a transmission manner. The hub 11 is arranged radially outward from the center and is substantially cylindrical.

[0041] The fan 10 further includes: at least two blades 12, and at least two blades 12 are arranged on the peripheral edge of the hub 11. Specifically, the number of blades 12 is at least two, and at least two blades 12 are arranged at intervals around the periphery of the hub 11. The hub 11 and the blades 12 are arranged coaxially, which can ensure that the inlet and outlet of the fan 10 are balanced during operation.

[0042] Furthermore, at least two fan blades 12 are evenly spaced around the outer circumference of the hub 11 to ensure consistent airflow transmission efficiency.

[0043] Each blade 12 has an inner periphery close to the hub 11 and an outer periphery away from the hub 11, and the inner periphery of each blade 12 is connected to the outer peripheral surface of the hub 11. Under the drive of the fan, the hub 11 and the blades 12 rotate simultaneously through the power transmission of the hub 11.

[0044] Air conditioner outdoor units generally have a lot of noise, which is mainly composed of motor noise and fan noise. Fan noise is generated by fan 10, and is closely related to the vortex generated by blade 12 in the air flow. When the sound wave generated by the tail vortex shedding at the trailing edge of blade 12 and the frequency of the nearly two-dimensional TS wave on the surface of blade 12 meet a certain relationship, a feedback loop will be formed and resonance amplification of TS wave will occur, locking the tail vortex shedding frequency, forming a relatively sharp peak on the frequency spectrum, and forming a larger vortex shedding noise on the surface of blade 12.

[0045] The fan blade 12 has a leading edge portion 13 located at the front side and a trailing edge portion 14 located at the rear side in the rotation direction of the fan blade 12. The leading edge portion 13 of the utility model is provided with a plurality of first spoilers 15 arranged at intervals. That is, along the rotation direction of the fan blade 12, the edge located at the front side of the fan blade 12 is the leading edge portion 13, and the edge located at the rear side of the fan blade 12 is the trailing edge portion 14. The fan blade 12 is provided with a plurality of first spoilers 15, and the plurality of first spoilers 15 are located at the leading edge portion 13 of the fan blade 12. The first spoilers 15 are provided on the leading edge portion 13 of the fan blade 12, so that the laminar flow on the blade surface is converted into turbulent flow, avoiding the generation of resonant amplified TS waves, and effectively reducing the fan noise.

[0046] Specifically, the first spoiler 15 may be a pit, which is arranged radially outwardly at intervals on the leading edge 13 of the blade 12. The pit can convert the laminar flow on the surface of the blade 12 into turbulent flow, avoid the generation of resonant amplified TS waves, and effectively reduce the noise of the fan 10. The drag reduction characteristics of the pit are used to optimize the flow, and the pit structure of the leading edge 13 can be used to improve the aerodynamic efficiency, which is manifested in reducing the power and noise at the same air volume.

[0047] Alternatively, the first spoiler 15 may be a protrusion, which is spaced radially outward from the leading edge 13 of the blade 12. The protrusion can convert the laminar flow on the surface of the blade 12 into turbulent flow, avoid the generation of resonant amplified TS waves, and effectively reduce the noise of the fan 10.

[0048] Therefore, a first spoiler 15 is provided at the leading edge 13 of the blade 12, which reduces the power and noise at the same air volume by cutting the laminar flow on the surface of the blade 12. The blade 12 provided with the first spoiler 15 converts the laminar flow on the surface of the blade 12 into turbulent flow, avoids the generation of resonant amplified TS waves, and effectively reduces the noise of the fan 10. The drag reduction characteristics of the pits, protrusions or grooves can be better utilized to optimize the flow, which can improve the aerodynamic efficiency, which is manifested as reducing the power and noise at the same air volume.

[0049] In some embodiments, in the windward direction of the fan blade 12, the projection shape of the first spoiler 15 on the fan blade 12 can be circular, that is, the first spoiler 15 can be a circular pit or protrusion, and the circular pit or protrusion can convert the laminar flow on the surface of the fan blade 12 into turbulent flow, avoiding the generation of resonant amplified TS waves, and effectively reducing the noise of the fan 10.

[0050] Alternatively, in the windward direction of the fan blade 12, the projection shape of the first spoiler 15 on the fan blade 12 can be a triangle, that is, the first spoiler 15 can be a triangular pit or protrusion, and the triangular pit or protrusion can convert the laminar flow on the surface of the fan blade 12 into turbulent flow, avoiding the generation of resonant amplified TS waves and effectively reducing the noise of the fan 10.

[0051] Alternatively, in the windward direction of the blade 12, the projection shape of the first spoiler 15 on the blade 12 may be a rectangle, that is, the first spoiler 15 may be a rectangular pit or protrusion. The rectangular pit or protrusion can convert the laminar flow on the surface of the blade 12 into turbulent flow, avoid the generation of resonant amplified TS waves, and effectively reduce the noise of the fan 10.

[0052] like Figure 5-Figure 7 As shown, the first spoiler 15 can be a circular pit or protrusion, and the radius of the pit or protrusion is r, and r satisfies the relationship: 2mm≤r≤10mm. Specifically, when the first spoiler 15 is a circular pit or protrusion, the radius of the pit or protrusion ranges from 2mm to 10mm, ensuring that the pit or protrusion cuts the laminar flow on the surface of the blade 12 into turbulent flow when the fan 10 rotates, so as to reduce the noise of the fan 10.

[0053] If the radius of the pit or protrusion is less than 2 mm, the pit or protrusion cannot cut the laminar flow on the surface of the blade 12, and cannot play the role of reducing the noise of the fan 10. In order to ensure that the first spoiler 15 can play the role of cutting the laminar flow, the radius r of the pit or protrusion is set to be not less than the first parameter value, and the first parameter value can be 3 mm, 4 mm, or 5 mm. Consider selecting a suitable value in the specific design.

[0054] If the radius of the pit or protrusion is greater than 10 mm, the wind resistance generated by the pit or protrusion is large, which reduces the wind speed of the fan 10 and affects the working efficiency of the air conditioner outdoor unit. In order to ensure that the first spoiler 15 can play a role in cutting laminar flow, the radius r of the pit or protrusion is set not to exceed the second parameter value, and the second parameter value can be 7 mm, 8 mm, or 9 mm. Consider selecting a suitable value in the specific design.

[0055] Furthermore, the first spoiler 15 can be a pit or a protrusion, and the depth of the pit or the height of the protrusion is h1, and h1 satisfies the relationship: 0.5mm≤h1≤5mm. The depth of the pit ranges from 0.5mm to 5mm, ensuring that the pit cuts the laminar flow on the surface of the blade 12 into turbulent flow when the fan 10 rotates, so as to reduce the noise of the fan 10.

[0056] If the depth of the pit or the height of the protrusion is less than 0.5 mm, the pit or the protrusion cannot cut the laminar flow on the surface of the blade 12, and cannot play the role of reducing the noise of the fan 10. In order to ensure that the first spoiler 15 can play the role of cutting the laminar flow, the depth h1 of the pit or the height h1 of the protrusion is set to be not less than the third parameter value, and the third parameter value can be 1 mm, 1.5 mm, or 2 mm. Consider selecting a suitable value in the specific design.

[0057] If the depth of the pit or the height of the protrusion is greater than 5 mm, the wind resistance generated by the pit or the protrusion is large, resulting in a reduction in the wind speed of the fan 10, affecting the working efficiency of the air conditioner outdoor unit. In order to ensure that the first spoiler 15 can play a role in cutting laminar flow, the depth h1 of the pit or the height h1 of the protrusion is set not to exceed the fourth parameter value, and the fourth parameter value can be 3.5 mm, 4 mm, or 4.5 mm. Consider selecting a suitable value in the specific design.

[0058] According to some embodiments of the utility model, the center distance between two adjacent first spoilers 15 is L, and L satisfies the relationship: 5mm≤L≤20mm. Specifically, the distance between the centers of any two adjacent first spoilers 15 is between 5mm and 20mm, ensuring that the plurality of first spoilers 15 can cut the laminar flow on the surface of the blade 12 into turbulent flow, so as to reduce the noise of the fan 10.

[0059] If the distance between the centers of any two adjacent first spoilers 15 is less than 5 mm, the wind resistance generated by the multiple first spoilers 15 is large, resulting in a reduction in the wind speed of the fan 10, affecting the working efficiency of the air conditioner outdoor unit. In order to ensure that the first spoilers 15 can play a role in cutting laminar flow, the center spacing L between two adjacent first spoilers 15 is set to be no less than the fifth parameter value, and the fifth parameter value can be 6 mm, 7 mm, or 8 mm. Consider selecting a suitable value in the specific design.

[0060] If the distance between the centers of any two adjacent first spoilers 15 is greater than 20 mm, the pits cannot cut the laminar flow on the surface of the blade 12, and cannot play the role of reducing the noise of the fan 10. In order to ensure that the first spoiler 15 can play the role of cutting the laminar flow, the center distance L between two adjacent first spoilers 15 is set not to exceed the sixth parameter value, and the sixth parameter value can be 17 mm, 18 mm, or 19 mm. Consider selecting a suitable value in the specific design.

[0061] like Figure 1-Figure 10 As shown, the blade 12 has a blade root and a blade tail. The blade root of the blade 12 is the part connected to the hub 11, and the blade tail is the part away from the hub 11. The distance between two adjacent first spoilers 15 near the blade root is smaller than the distance between two adjacent first spoilers 15 near the blade tail. In other words, the blade root is the inner periphery of the blade 12, and the blade tail is the outer periphery of the blade 12.

[0062] Hereinafter, the surface on the negative pressure side of the blade 12 is referred to as the suction surface 18, and the surface on the positive pressure side of the blade 12 is referred to as the pressure surface.

[0063] According to some embodiments of the utility model, the trailing edge portion 14 is formed with a notch 17 extending from the trailing edge portion 14 to the leading edge portion 13, and the notch 17 is V-shaped. Specifically, the notch 17 can disrupt the airflow shedding frequency. The notch 17 can be formed at a position relatively closer to the inner periphery of the fan blade 12. By providing the notch 17 on the fan blade 12, the airflow shedding frequency is inconsistent during the use of the fan 10 of this embodiment, thereby effectively reducing the operating noise of the fan blade 12. At the same time, the provision of the notch 17 reduces the flow separation of the suction surface 18 close to the hub 11, and the high-energy airflow on the pressure surface can supplement the low-speed airflow on the suction surface 18 through the notch 17, thereby improving the total pressure efficiency of the fan 10 blades.

[0064] In a preferred embodiment, Figure 1-Figure 10 As shown, the notch 17 can be formed into a V-shape. The V-shaped notch 17 has a good noise reduction effect and is easy to process.

[0065] The air conditioner outdoor unit according to the second embodiment of the utility model comprises: a housing, a heat exchanger and a fan assembly. The housing is provided with an installation cavity; the heat exchanger is arranged in the installation cavity of the housing; the fan assembly is arranged in the installation cavity for driving airflow to flow through the heat exchanger for heat exchange.

[0066] The fan assembly includes: a fan and a fan 10 , wherein the fan 10 includes: a hub 11 which is drivingly connected to the fan; and at least two blades 12 , wherein the at least two blades 12 are arranged on the peripheral outer edge of the hub 11 .

[0067] The surface of the negative pressure side of the blade 12 is the suction surface 18 and the surface of the positive pressure side of the blade 12 is the pressure surface, and a plurality of first spoilers 15 are arranged at intervals on the pressure surface. Specifically, the first spoilers 15 are arranged on the pressure surface, and the laminar flow on the surface of the blade 12 can be cut into turbulent flow to reduce the noise of the fan 10.

[0068] According to some embodiments of the utility model, the fan blade 12 has a leading edge portion 13 located at the front side and a trailing edge portion 14 located at the rear side in the rotation direction of the fan blade 12, and the suction surface 18 or the pressure surface is provided with a second spoiler 16 at the trailing edge portion 14, and the second spoiler 16 is protruding relative to the suction surface 18 or the pressure surface. Specifically, in the rotation direction of the fan blade 12, the second spoiler 16 is provided at the leading edge portion 13 or the trailing edge portion 14 of the fan blade 12,

[0069] according to Fig. 9 As shown, in some embodiments, there are multiple second spoilers 16, and the multiple spoilers are spaced apart on the trailing edge portion 14. Specifically, the multiple second spoilers 16 are spaced apart along the trailing edge portion 14 of the fan blade 12 to reduce the trailing edge vortex shedding intensity of the wake of the fan blade 12, delay the airflow separation position of the suction surface 18, reduce the relative airflow angle of the fan 10 outlet, increase the load, improve the work capacity of the fan blade 12, and finally increase the air volume of the fan 10.

[0070] In other embodiments, Fig.10 As shown, the second spoiler 16 extends from the connection between the blade 12 and the hub 11 to the other side of the blade 12 away from the hub 11. Specifically, the second spoiler 16 extends from the inner periphery to the outer periphery at the trailing edge 14 of the blade 12 to reduce the trailing edge vortex shedding strength of the wake of the blade 12, delay the airflow separation position of the suction surface 18, reduce the relative airflow angle of the fan 10 outlet, increase the load, improve the work capacity of the blade 12, and finally increase the air volume of the fan 10.

[0071] Preferably, the second spoiler 16 extends from the connection between the fan blade 12 and the hub 11 to the other side of the fan blade 12 away from the hub 11, thereby improving the working capacity of the fan blade 12 and increasing the air volume of the fan 10.

[0072] According to some embodiments of the utility model, the height of the second spoiler 16 is d, and d satisfies the relationship: 1mm≤d≤15mm. Specifically, the height of the second spoiler 16 is in the range of 1mm-15mm, so as to reduce the vortex strength of the trailing edge of the wake of the blade 12, delay the airflow separation position of the suction surface 18, reduce the relative airflow angle of the fan 10 outlet, increase the load, improve the working capacity of the blade 12, and finally increase the air volume of the fan 10. If the height of the second spoiler 16 is less than 1mm, the second spoiler 16 cannot reduce the vortex strength of the trailing edge of the wake of the blade 12, and cannot play the effect of increasing the air volume of the fan 10. If the height of the second spoiler 16 is greater than 15mm, the wind resistance generated by the second spoiler 16 is large, resulting in a reduction in the wind speed of the fan 10, affecting the working efficiency of the air conditioner outdoor unit.

[0073] Furthermore, the thickness of the second spoiler 16 is h2, and h2 satisfies the relationship: 1mm≤h2≤10mm. Specifically, the thickness of the second spoiler 16 ranges from 1mm to 10mm to ensure the connection strength between the second spoiler 16 and the fan blade 12 and prevent the second spoiler 16 from falling off. If the thickness of the second spoiler 16 is less than 1mm, the second spoiler 16 is easy to fall off; if the thickness of the second spoiler 16 is greater than 10mm, the work capacity of the fan 10 will be reduced, affecting the working efficiency of the air conditioner outdoor unit.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner outdoor unit, comprising: A housing having a mounting cavity disposed therein; a heat exchanger, which is arranged in the mounting cavity of the housing; A fan assembly, which is arranged in the installation cavity and is used to drive airflow to flow through the heat exchanger for heat exchange; Characterized in that the fan assembly comprises: Fan; Fan, including: A hub, which is drivingly connected to the fan; At least two blades, at least two of the blades are arranged on the peripheral outer edge of the hub; The fan blade has a leading edge portion located at the front side and a trailing edge portion located at the rear side in the rotation direction of the fan blade, and a plurality of first spoilers arranged at intervals are arranged on the leading edge portion, and the first spoilers are pits or protrusions.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The radius of the first spoiler is r and the depth or height is h1, and r and h1 respectively satisfy the relationship: 2mm≤r≤10mm, 0.5mm≤h1≤5mm.

3. The air conditioner outdoor unit according to claim 1, characterized in that: The center distance between two adjacent first spoilers is L, and L satisfies the relationship: 5mm≤L≤20mm.

4. The air conditioner outdoor unit according to claim 1, characterized in that: The fan blade has a blade root and a blade tail, the blade root of the fan blade is the part connected to the hub, and the blade tail is the part away from the hub; as well as, The distance between two adjacent first spoilers close to the blade root is smaller than the distance between two adjacent first spoilers close to the blade tail.

5. The air conditioner outdoor unit according to claim 1, characterized in that: The trailing edge portion is formed with a notch extending from the trailing edge portion toward the leading edge portion, and the notch is V-shaped.

6. An air conditioner outdoor unit, comprising: A housing having a mounting cavity disposed therein; a heat exchanger, which is arranged in the mounting cavity of the housing; A fan assembly, which is arranged in the installation cavity and is used to drive airflow to flow through the heat exchanger for heat exchange; Characterized in that the fan assembly comprises: Fan; Fan, including: A hub, which is drivingly connected to the fan; At least two blades, at least two of the blades are arranged on the peripheral outer edge of the hub; The surface of the negative pressure side of the fan blade is a suction surface, and the surface of the positive pressure side of the fan blade is a pressure surface. A plurality of first spoilers arranged at intervals are arranged on the pressure surface.

7. The air conditioner outdoor unit according to claim 6, characterized in that: The fan blade has a leading edge portion located at the front side in the rotation direction of the fan blade and a trailing edge portion located at the rear side, and the suction surface or the pressure surface is provided with a second spoiler portion at the trailing edge portion, and the second spoiler portion protrudes relative to the suction surface or the pressure surface.

8. The air conditioner outdoor unit according to claim 7, characterized in that: The second spoiler extends from the connection between the fan blade and the hub to the other side of the fan blade away from the hub; or There are a plurality of second spoilers, and the plurality of spoilers are arranged at intervals on the trailing edge portion.

9. The air conditioner outdoor unit according to claim 7, characterized in that: The protruding height of the second spoiler is d, and d satisfies the relationship: 1mm≤d≤15mm.

10. The air conditioner outdoor unit according to claim 7, characterized in that: The thickness of the second spoiler is h2, and h2 satisfies the relationship: 1mm≤h2≤10mm.

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