outdoor unit of air conditioner and air conditioner

Abstract

This application provides an outdoor unit for an air conditioner and an air conditioner, including: a heat exchanger; a fan impeller disposed above the heat exchanger; and an air guide assembly disposed inside the heat exchanger and below the fan impeller. The air guide assembly is hollow to form an air duct, and at least one annular air inlet is provided on the outer side of the air guide assembly. An air outlet is provided on the side of the air guide assembly facing the fan impeller. The air inlet, the air duct, and the air outlet are connected. By placing the air guide assembly below the fan impeller and providing an annular air inlet on the air guide assembly, air generated inside the heat exchanger from various directions can enter the air duct of the air guide assembly through the annular air inlet and be blown out from the air outlet. This allows the airflow to act evenly on the fan impeller, resulting in uniform force on the fan impeller. This helps to reduce the vibration noise generated by the fan impeller, thereby reducing the operating noise of the outdoor unit of the air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning device technology, and in particular to an outdoor unit of an air conditioner and an air conditioner. Background Technology

[0002] To meet the demand for large cooling capacity and small footprint, most outdoor units in existing large-capacity air conditioners have a top-discharge structure with a relatively high heat exchanger, such as nearly 1.8m. Due to the structural limitations of the heat exchanger, there is a significant difference in airflow between the upper and lower parts inside the heat exchanger, with the upper air velocity being two or even three times that of the lower air velocity. Due to the difference in air velocity, the air intake angles of the upper and lower parts of the heat exchanger are different, resulting in different forces acting on the fan blades at different positions. This imbalance in the force on the fan blades generates a clapping sound during operation, leading to high operating noise from the outdoor unit. Summary of the Invention

[0003] This application provides an outdoor unit for an air conditioner and an air conditioner to solve the problem of high operating noise in the outdoor unit.

[0004] On the one hand, this application provides an outdoor unit for an air conditioner, comprising:

[0005] Heat exchanger;

[0006] The fan impeller is positioned above the heat exchanger;

[0007] An air guide assembly is disposed inside the heat exchanger and below the fan impeller. The air guide assembly is hollow to form an air duct. At least one annular air inlet is provided on the outer side of the air guide assembly, and an air outlet is provided on the side of the air guide assembly facing the fan impeller. The air inlet, the air duct, and the air outlet are connected.

[0008] In one possible implementation of this application, the air inlet angle of the annular air inlet is 30°-50°.

[0009] In one possible implementation of this application, the cross-section of the air duct gradually increases along the direction away from the fan impeller.

[0010] In one possible implementation of this application, the air duct is a circular air duct, and the diameter of the cross-section of the air duct is R, wherein...

[0011]

[0012] The diameter of the fan impeller is R0, and F0 is the wind speed value on the side of the heat exchanger facing the fan impeller. n The wind speed value at the height corresponding to the heat exchanger and the air duct.

[0013] In one possible implementation of this application, the air guide assembly includes a plurality of air guide plates, the air guide plates being closed-loop air guide plates, and adjacent closed-loop air guide plates are spaced apart along a direction away from the fan impeller to form the annular air inlet.

[0014] In one possible implementation of this application, the average circumference of each of the guide vanes increases sequentially along the direction away from the fan impeller.

[0015] In one possible implementation of this application, the spacing between adjacent air guide plates is L1 = H / 12, and the width of the air guide plate is W = L1·cos45°, where H is the height of the heat exchanger.

[0016] In one possible implementation of this application, the air guide assembly includes an air guide plate, which is a spiral air guide plate, and the spiral diameter of the spiral air guide plate gradually increases along the direction away from the fan impeller.

[0017] In one possible implementation of this application, the air guide assembly further includes at least one connecting portion, one end of which is connected to at least one of the air guide plates, and the other end of which is connected to the fan impeller.

[0018] In one possible implementation of this application, the diameter of the air outlet is less than or equal to the rotational diameter of the fan impeller, and the centerline of the fan impeller coincides with the centerline of the air guide assembly.

[0019] In one possible implementation of this application, the air guide assembly further includes:

[0020] At least one connecting rib is provided on the air guide plate, and one end of the connecting rib is connected to the fan impeller.

[0021] In one possible implementation of this application, a clearance space is formed between the bottom of the heat exchanger and the bottom of the air guide assembly, and the height of the air guide assembly is L0. Then:

[0022]

[0023] Where L is the height of the heat exchanger, L2 is the height of the clearance space, and H0 is the height correction coefficient.

[0024] On the other hand, this application also provides an air conditioner, including the aforementioned outdoor unit.

[0025] This application provides an outdoor air conditioning unit and an air conditioner. By placing the fan impeller of the outdoor air conditioning unit above a heat exchanger, and providing an air guide assembly inside the heat exchanger and below the fan impeller, the air guide assembly has at least one annular air inlet on its outer side and an air outlet on the side of the air guide assembly facing the fan impeller. The air guide assembly is hollow inside to form an air duct. The air inlet, air duct, and air outlet are connected, so that air generated inside the heat exchanger from various directions can enter the air duct through the annular air inlet and be blown out from the air outlet. The air force can be evenly applied to the fan impeller, so that the fan impeller is subjected to uniform force, which helps to reduce the vibration noise generated by the fan impeller, and thus helps to reduce the operating noise generated by the outdoor air conditioning unit. Attached Figure Description

[0026] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of an outdoor air conditioning unit provided in an embodiment of this application.

[0028] Figure 2 A schematic diagram of the air guiding principle provided in the embodiments of this application.

[0029] Figure 3 This is a schematic diagram of the air guide assembly provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the structure of an air guide assembly provided in another embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of an air guide assembly provided in another embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the structure of an air guide assembly provided in another embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. It should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, it can refer to a direct connection or an indirect connection through an intermediate medium, or it can refer to the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0036] Please refer to Figures 1-6 This application provides an outdoor unit for an air conditioner, including a heat exchanger 10, a fan impeller 20, and an air guide assembly 30.

[0037] The fan impeller 20 is positioned above the heat exchanger 10, and the air guide assembly 30 is positioned inside the heat exchanger 10 and below the fan impeller 20. Specifically, the air guide assembly 30 can be positioned directly below the fan impeller 20.

[0038] The air guide assembly 30 is hollow inside to form an air duct 301. At least one annular air inlet 302 is provided on the outer side of the air guide assembly 30, and an air outlet 303 is provided on the side of the air guide assembly 30 facing the fan impeller 20. The air inlet 302, air duct 301, and air outlet 303 are connected. Figure 2 As shown, the air generated inside the heat exchanger 10 from all directions can enter the air duct 301 through the annular air inlet 302. Compared with the airflow before improvement (as shown by the dotted line), the improved airflow formed after setting the air guide component 30 (as shown by the solid line) can enter the air duct 301 through the annular air inlet 302. Thus, the wind force generated from the air outlet 303 can act evenly on the fan impeller 20, so that the fan impeller 20 is subjected to uniform force, which helps to reduce the vibration noise generated by the fan impeller 20, and thus helps to reduce the operating noise generated by the outdoor unit of the air conditioner.

[0039] Specifically, such as Figure 3 As shown, the component 30 in this embodiment of the application may be composed of one or more air guide plates 31, which are annular structures, thereby forming an air inlet 302, an air duct 301 and an air outlet 303.

[0040] In this application, the outdoor unit of the air conditioner has two mutually perpendicular directions: length (X), width (Y), and height (Z). In this embodiment, the air guide assembly 30 extends along the height direction (Z), that is, the air duct 301 extends along the height direction (Z). The diameter of the annular air inlet 302 is parallel to either the length direction (X) or the width direction (Y).

[0041] In this embodiment, the fan impeller 20 of the outdoor unit of the air conditioner is positioned above the heat exchanger 10, and an air guide assembly 30 is provided inside the heat exchanger 10 and below the fan impeller 20. The outer side of the air guide assembly 30 has at least one annular air inlet 302, and the side of the air guide assembly 30 facing the fan impeller 20 has an air outlet 303. The air guide assembly 30 is hollow inside to form an air duct 301. The air inlet 302, the air duct 301, and the air outlet 303 are connected, so that the air generated inside the heat exchanger 10 from various directions can enter the air duct 301 through the annular air inlet 302 and be blown out from the air outlet 303. The wind force can be evenly applied to the fan impeller 20, so that the fan impeller 20 is subjected to uniform force, which helps to reduce the vibration noise generated by the fan impeller 20, and thus helps to reduce the operating noise generated by the outdoor unit of the air conditioner.

[0042] In some embodiments, such as Figure 2 As shown, the air inlet angle θ of the annular air inlet 302 is 30°-50°. For example, the air inlet angle of the annular air inlet 302 can be 30°, 45°, or 50°. Specifically, in this embodiment, the air inlet angle θ of the annular air inlet 302 refers to the angle of the airflow relative to a horizontal plane, which is the plane formed by the length direction X and the width direction Y. Therefore, the air inlet angle θ of the annular air inlet 302 is the angle formed by the airflow relative to either the length direction X or the width direction Y.

[0043] In this embodiment of the application, the air inlet angle θ of the air guide component 20 is 45°·t, where Δt is the angle correction coefficient. For example, the range of the angle correction coefficient Δt in this embodiment of the application can be 0.66-1.12.

[0044] Because a clearance space 101 is formed between the bottom of the heat exchanger 10 and the bottom of the air guide assembly 30, and this clearance space 101 houses components such as compressors, oil separators, steam separators, and electrical boxes, it will affect the spatial airflow distribution at the bottom of the heat exchanger 10. Therefore, a correction coefficient can be determined based on the actual position of the components to correct the angle of the air grille. Setting an angle correction coefficient is therefore beneficial for improving the air inlet angle of the air guide assembly 30, thereby improving the air guiding effect of the air guide assembly 30.

[0045] Due to the height limitation of the heat exchanger 10, the air velocity in the upper and lower parts inside the heat exchanger 10 is non-uniform along the height direction Z. Specifically, the air velocity is lower at the bottom and higher at the top, meaning that the air velocity at the location farthest from the fan impeller 20 is lower than the air velocity at the location closer to the fan impeller 20. This results in different initial angles at which the air blows towards the fan impeller 20 from different locations, and ultimately different wind forces acting on the fan impeller 20. Consequently, uneven stress on the fan impeller 20 is likely to occur. Furthermore, when the air inlet angle θ of the annular air inlet 302 is too large, the airflow... The airflow may be blocked outside the air guide assembly 20 and thus unable to enter the air duct 301. When the air inlet angle θ of the annular air inlet 302 is too small, the air guide assembly 20 cannot play a guiding role, and the airflow cannot be blown towards the fan impeller 20. Therefore, by setting the air inlet angle θ of the annular air inlet 302 within a reasonable range, it is beneficial to ensure that the air blown out by the heat exchanger 10 can enter the air duct 301 through the air guide assembly 30, and the airflow at different heights can maintain the same air inlet angle, which is beneficial to further ensure that the fan impeller 20 is subjected to uniform force.

[0046] It should be noted that when the air guide assembly 30 has multiple annular air inlets 302, the air inlet angle of each annular air inlet 302 is the same.

[0047] In addition, such as Figure 3 As shown, corresponding to the air inlet angle θ of the air guide assembly 30, the air guide plate 31 of this application embodiment has an inclination angle, which is the same as the air inlet angle. That is, the inclination angle of the air guide plate is in the range of 30°-50°. By setting the air guide plate 31 as an inclination air guide plate, it can be ensured that the annular air inlet 302 can form an air inlet angle θ, thereby playing a guiding role in the airflow.

[0048] In some embodiments, the cross-section of the duct 301 gradually increases along the direction away from the fan impeller 20. Due to the height limitation of the heat exchanger 10, the air velocity in the upper and lower parts inside the heat exchanger 10 is non-uniform along the height direction Z of the heat exchanger 10. Specifically, the air velocity is lower at the bottom and higher at the top, that is, the air velocity at the position away from the fan impeller 20 is lower than the air velocity at the position closer to the fan impeller 20. Therefore, by setting the cross-section of the duct 301 to gradually increase along the direction away from the fan impeller 20, it is possible to ensure that the distance between the bottom of the air guide assembly 30 and the heat exchanger 10 is smaller, thereby ensuring that the air blown out of the heat exchanger 10 can enter the duct 301 through the air guide assembly 30, which is beneficial to further ensure that the fan impeller 20 is subjected to uniform force.

[0049] In some embodiments, the air duct 301 is a circular air duct 301, and the diameter of the cross-section of the air duct 301 is R, wherein...

[0050]

[0051] R0 is the diameter of the fan impeller 20, F0 is the wind speed value on the side of the heat exchanger 10 facing the fan impeller 20, that is, F0 is the wind speed value on the top surface of the heat exchanger 10, F n The wind speed value at the height corresponding to the heat exchanger 10 and the air duct 301, i.e., F n This refers to the wind speed value at a specific height of the heat exchanger 10. In this embodiment, the diameter R0 of the fan impeller 20 specifically refers to the rotational diameter of the fan impeller 20.

[0052] In this embodiment of the application, at the same time, the wind speed value F at a specific height of the heat exchanger 10 is... n The greater the difference between the wind speed value F0 and the top surface of the heat exchanger 10, the larger the diameter R of the duct 301 corresponding to that specific height needs to be, which is beneficial to better improve the wind speed non-uniformity. Specifically, in the embodiments of this application, the cross-section of the duct 301 gradually increases along the direction away from the fan impeller 20.

[0053] In some embodiments, the air guide assembly 30 includes a plurality of closed-loop air guide plates 311, which are annular in structure. Adjacent closed-loop air guide plates 311 are spaced apart along the direction away from the fan impeller 20 to form annular air inlets 302. Since there is airflow at various positions along the height of the heat exchanger 10, the adjacent closed-loop air guide plates 311 are spaced apart to form annular air inlets 302. Because there are multiple closed-loop air guide plates 311, there are also multiple annular air inlets 302. Corresponding annular air inlets 302 are provided at different heights of the heat exchanger 10, allowing airflow generated at various positions along the height of the heat exchanger 10 to enter the air duct 301 through the annular air inlets 302, thereby improving heat exchange efficiency.

[0054] Specifically, in the embodiments of this application, each closed-loop air guide plate 311 is a closed-loop structure with its ends connected, such as... Figure 4 and Figure 5 As shown, the closed-loop air guide plate 311 can be circular or square. Of course, the closed-loop air guide plate 311 can also be elliptical or triangular or other polygonal ring structures. No specific shape of the closed-loop air guide plate 311 is limited here.

[0055] In some embodiments, the average circumference of each closed-loop guide vane 311 increases sequentially along the direction away from the fan impeller 20. Specifically, multiple closed-loop guide vanes 311 are arranged at intervals along the height direction Z, and correspondingly, the annular air inlets 302 formed between adjacent closed-loop guide vanes 311 are arranged at intervals along the height direction Z. Due to the height limitation of the heat exchanger 10, the air velocity in the upper and lower parts inside the heat exchanger 10 is non-uniform. Specifically, the air velocity is lower at the bottom and higher at the top, that is, the air velocity at the position away from the fan impeller 20 is lower than the air velocity at the position closer to the fan impeller 20. Therefore, by setting the average circumference of the guide vanes 31 to increase sequentially along the direction away from the fan impeller 20, it can be ensured that the distance between the bottom of the air guide assembly 30 and the heat exchanger 10 is smaller, thereby ensuring that the air blown out of the heat exchanger 10 can enter the air duct 301 through the air guide assembly 30, which is beneficial to further ensure that the fan impeller 20 is subjected to uniform force.

[0056] Of course, it should be noted that, such as Figure 3 As shown, the average circumference of each closed-loop air guide plate 311 can also be the same, and the embodiments of this application are not limited thereto.

[0057] In some embodiments, such as Figure 6As shown, the air guide assembly 30 includes an air guide plate 31, which is a spiral air guide plate 312. The spiral diameter of the spiral air guide plate 312 gradually increases along the direction away from the fan impeller 20. By setting the air guide plate 31 as a spiral air guide plate 312, the air guide plate 31 can be integrally molded, which helps to save material in the air guide assembly 30 and also helps to improve the structural strength of the air guide assembly 30.

[0058] In some embodiments, the air guide assembly 30 further includes at least one connecting rib 33, which is disposed on the air guide plate. Specifically, there are two connecting ribs 33, which are disposed opposite to each other. In this embodiment, the connecting rib 33 can be disposed on the inner surface of the air guide plate 31, or it can also be disposed on the inner surface of the air guide plate 31, in combination with... Figure 4 and Figure 6 As shown, the connecting rib 33 can connect multiple closed-loop air guide plates 311, or it can be connected to the spiral body formed by the spiral air guide plate 312. The connecting rib 33 can be an integrally molded structure, connected to the air guide plate by welding, bonding, or other methods. Alternatively, the connecting rib 33 and the air guide plate 31 can also be integrally molded by injection molding or other methods. The connecting rib 33 can be used to strengthen the air guide plate 31, thereby improving the structural strength of the air guide assembly 30.

[0059] One end of the connecting rib 33 is connected to the fan impeller 20. Specifically, the end of the connecting rib 33 near the air guide plate 20 protrudes from the surface of the air guide plate 31 facing the fan impeller 20, so that the connecting rib 33 can be connected to the fan impeller 20. This helps to improve the connection strength between the air guide assembly 30 and the fan impeller 20, and helps to ensure the stability of the connection between the air guide assembly 30 and the fan impeller 20. Moreover, no additional connection part is required, which helps to save materials.

[0060] Specifically, the outdoor unit of the air conditioner also includes a bracket 50. The fan impeller 20 and the connecting rib 33 are respectively connected to the bracket 50. The fan impeller 20 and the air guide assembly 30 are located on opposite sides of the bracket 50. The connection between the fan impeller 20 and the air guide assembly 30 can be detachable or fixed, for example, by means of snap-fit, threaded connection, or welding. This embodiment does not specifically limit the connection in this way.

[0061] In some embodiments, such as Figure 4As shown, the diameter R1 of the air outlet 303 is less than or equal to the rotation diameter R0 of the fan impeller 20, and the centerline O1 of the fan impeller 20 coincides with the centerline O2 of the air guide assembly 30. Since the centerline O1 of the fan impeller 20 coincides with the centerline O2 of the air guide assembly 30, the air outlet 303 is positioned directly below the fan impeller 20 without any offset. This ensures the symmetry of the airflow from the air guide assembly 30 acting on the fan impeller 20. Therefore, by setting the diameter of the air outlet 303 to be less than or equal to the fan's rotation diameter, all the air blown from the air outlet 303 can be directed towards the fan impeller 20 without any air leakage. This ensures that the force on all parts of the fan impeller 20 is even, which helps to further reduce the operating noise of the fan impeller 20.

[0062] In some embodiments, combined with Figure 1 and Figure 4 As shown, a clearance space 101 is formed between the bottom of the heat exchanger 10 and the bottom of the air guide assembly 30. The height of the air guide assembly 30 is L0. Then:

[0063]

[0064] Where L is the height of heat exchanger 10, L2 is the height of clearance space 101, and H0 is the height correction coefficient.

[0065] Specifically, the correction factor H0 is a correction factor related to the fin spacing of adjacent fins in the heat exchanger 10. The value of H0 ranges from 0.5 to 1.5. For example, when the fin spacing between adjacent fins of the heat exchanger 10 is 1.4 mm, H0 = 1; when the fin spacing between adjacent fins of the heat exchanger 10 is 1.6 mm, H0 = 0.85; and when the fin spacing between adjacent fins of the heat exchanger 10 is 1.8 mm, H0 = 1 and H0 = 0.75. Since the height of the air guide assembly 30 is strongly correlated with the height of the heat exchanger 10, and the height of the heat exchanger 10 and the fin spacing determine the non-uniformity of the air velocity in the upper and lower parts inside the heat exchanger 10, setting a height correction factor is beneficial to improving the height parameters of the air guide assembly 30, thereby improving the air outlet effect of the air guide assembly 30.

[0066] Furthermore, considering that there are components such as compressors and pipes at the bottom of the heat exchanger 10, the bottom of the air guide assembly 30 is spaced apart from the bottom of the heat exchanger 10 to form a clearance space 101. This space serves to avoid obstructing the compressors and pipes. Therefore, the maximum height correlation coefficient of the air guide assembly 30 is the ratio between the difference between the height of the heat exchanger 10 and the height of the clearance space 101 and the height of the heat exchanger 10. For example, (L-L2) / L = 3 / 4, then the height of the air guide assembly 30 is L0 = 3 / 4·L·H0.

[0067] In some embodiments, combined with Figure 1 and Figure 4 As shown, the spacing L1 between adjacent air guide plates 31 is H / 12, and the width W of the air guide plate 31 is L1·cos45°, where H is the height of the heat exchanger 10. Specifically, in this embodiment, the height H of the heat exchanger 10 is between 1200mm and 1500mm, correspondingly, the spacing L1 between adjacent air guide plates 31 is between 100mm and 125mm, and the width W of the air guide plate 31 is between 52.53mm and 65.57mm. For example, if the height H of the heat exchanger 10 is 1200mm, then the spacing L1 between adjacent air guide plates 31 is 100mm, and the width W of the air guide plate 31 is 52.53mm.

[0068] To better implement the outdoor unit of the air conditioner in this application, embodiments of this application also provide an air conditioner including the outdoor unit of any of the above embodiments. In the air conditioner of this application embodiment, by placing the fan impeller 20 of the outdoor unit above the heat exchanger 10, and by placing the air guide assembly 30 inside the heat exchanger 10 and below the fan impeller 20, the air guide assembly 30 has at least one annular air inlet 302 on its outer side and an air outlet 303 on the side of the air guide assembly 30 facing the fan impeller 20. The air guide assembly 30 is hollow inside to form an air duct 301. The air inlet 302, the air duct 301 and the air outlet 303 are connected, so that the air generated inside the heat exchanger 10 from all directions can enter the air duct 301 through the annular air inlet 302 and be blown out from the air outlet 303 so that the wind force can be evenly applied to the fan impeller 20, so that the fan impeller 20 is subjected to uniform force, which helps to reduce the vibration noise generated by the fan impeller 20, and thus helps to reduce the operating noise generated by the outdoor unit of the air conditioner.

[0069] Since this air conditioner has the aforementioned outdoor unit, it has all the same beneficial effects, which will not be repeated here.

[0070] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not detailed in a particular embodiment, please refer to the relevant descriptions in other embodiments. In specific implementation, each of the above units or structures can be implemented as an independent entity, or can be arbitrarily combined to be implemented as the same or several entities. For specific implementations of the above units or structures, please refer to the preceding method embodiments, which will not be repeated here.

[0071] The above provides a detailed description of an outdoor air conditioning unit and an air conditioner provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of the embodiments of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An outdoor unit for an air conditioner, characterized in that, include: Heat exchanger; The fan impeller is positioned above the heat exchanger; An air guide assembly is disposed inside the heat exchanger and below the fan impeller. The air guide assembly is hollow inside to form an air duct. At least one annular air inlet is opened on the outer side of the air guide assembly, and an air outlet is opened on the side of the air guide assembly facing the fan impeller. The air inlet, the air duct, and the air outlet are connected. The cross-section of the air duct gradually increases in the direction away from the fan impeller; The air guide assembly includes multiple air guide plates, which are closed-loop air guide plates. Adjacent closed-loop air guide plates are spaced apart along the direction away from the fan impeller to form the annular air inlet.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, The air inlet angle of the annular air inlet is 30°-50°.

3. The outdoor unit of the air conditioner according to claim 1, characterized in that, Along the direction away from the fan impeller, the average circumference of each of the guide vanes increases sequentially.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The air guiding assembly includes an air guiding plate, which is a spiral air guiding plate, and the spiral diameter of the spiral air guiding plate gradually increases along the direction away from the fan impeller.

5. The outdoor unit of the air conditioner according to claim 1, characterized in that, The air guide assembly also includes: At least one connecting rib is provided on the air guide plate, and one end of the connecting rib is connected to the fan impeller.

6. The outdoor unit of the air conditioner according to claim 1, characterized in that, The spacing between adjacent air guide plates is L1 = H / 12, and the width of the air guide plate is W = L1·cos45°, where H is the height of the heat exchanger.

7. The outdoor unit of the air conditioner according to claim 1, characterized in that, The air duct is a circular air duct, and the diameter of the cross-section of the air duct is R. Then: Where R0 is the diameter of the fan impeller, F0 is the wind speed value on the side of the heat exchanger facing the fan impeller, and F n The wind speed value at the height corresponding to the heat exchanger and the air duct.

8. The outdoor unit of the air conditioner according to claim 1, characterized in that, A clearance space is formed between the bottom of the heat exchanger and the bottom of the air guide assembly. The height of the air guide assembly is L0. Then: Where L is the height of the heat exchanger, L2 is the height of the clearance space, and H0 is the height correction coefficient.

9. The outdoor unit of the air conditioner according to claim 1, characterized in that, The diameter of the air outlet is less than or equal to the rotation diameter of the fan impeller, and the centerline of the fan impeller coincides with the centerline of the air guide assembly.

10. An air conditioner, characterized in that, Includes the outdoor unit of the air conditioner as described in any one of claims 1-9.

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