Air outlet top cover and top air outlet air conditioner outdoor unit

Abstract

The utility model provides an air outlet top cover and a top air outlet air conditioner outdoor unit. The air outlet top cover is provided with an air duct, the air duct is provided with an air inlet side and an air outlet side, and the air outlet side of the air duct is covered with a grid with a plurality of air outlet holes; the inner wall of the air duct comprises an arc section, a first linear section, a second linear section and a third linear section which are sequentially connected in the circumferential direction of the air duct, the two ends of the arc section are connected with one end of the first linear section and one end of the third linear section respectively, and the first linear section and the third linear section are tangent to the arc section. Two ends of the second linear segment are respectively connected with the other ends of the first linear segment and the third linear segment. The air outlet area of the air duct can be increased, so that the air outlet volume is increased, and heat is dissipated in time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly relates to an air outlet top cover and a top air outlet air conditioner outdoor unit. BACKGROUND

[0002] Air conditioner outdoor units are divided into side air outlet air conditioner outdoor units and top air outlet air conditioner outdoor units according to air outlet modes, wherein the top air outlet air conditioner outdoor units are widely used due to the characteristics of small volume, compact structure and low cost. However, the existing top air outlet air conditioner outdoor units have the defect of small heat dissipation margin, which leads to shutdown due to failure to dissipate heat in time. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the application provide an air outlet top cover and a top air outlet air conditioner outdoor unit to solve the problem that the existing top air outlet air conditioner outdoor unit cannot dissipate heat in time.

[0004] In a first aspect, an air outlet top cover is provided, which is provided with an air duct, the air duct has an air inlet side and an air outlet side, and the air outlet side of the air duct is covered with a grid having a plurality of air outlet holes; the inner wall of the air duct includes a circular arc segment, a first straight line segment, a second straight line segment and a third straight line segment connected in sequence along the circumference of the air duct, both ends of the circular arc segment are connected to one end of the first straight line segment and the third straight line segment respectively, the first straight line segment and the third straight line segment are tangent to the circular arc segment, and both ends of the second straight line segment are connected to the other end of the first straight line segment and the third straight line segment respectively.

[0005] Optionally, the grid includes a center plate and a rib, the center plate includes a center part, the center part is located in the middle of the air outlet side of the air duct, and the width of the center part gradually decreases towards the direction close to the second straight line segment; the rib includes a plurality of curved ribs and a plurality of reinforcing ribs, a plurality of the curved ribs are arranged in the center part from inside to outside at intervals, the shape of the curved rib is the same as the edge contour of the center part, and a plurality of the reinforcing ribs are connected with a plurality of the curved ribs to form a plurality of the air outlet holes.

[0006] Optionally, the air outlet top cover is provided with an extension part outside the second straight line segment, the top surface of the extension part forms a flow guide slope, and the flow guide slope is connected with the second straight line segment to guide part of the airflow in the air duct to the external environment.

[0007] Optionally, the extension portion has a straight edge opposite to the second straight segment, the flow guide slope is provided with a plurality of flow guide ribs, the plurality of flow guide ribs are arranged in a length direction of the second straight segment, two ends of the flow guide ribs are connected to the second straight segment and the straight edge respectively, and a height and / or a width of the flow guide ribs gradually decrease in a direction from the second straight segment to the straight edge; and / or, the extension portion has a straight edge opposite to the second straight segment, a distance from the straight edge to the second straight segment is denoted as W1, a distance from a center of the circular arc segment to the straight edge is denoted as W, and a ratio of the W1 to the W is 0.2-0.4.

[0008] Optionally, an inclination angle of the flow guide slope is denoted as A1, and 20°≤A1≤35°; and / or, a height of the air outlet top cover is denoted as h3, a height of the flow guide slope is denoted as D1, and a ratio of the D1 to the h3 is 0.20-0.50.

[0009] Optionally, an angle between the first straight segment and the third straight segment is denoted as A, and 50°≤A≤60°.

[0010] In a second aspect, the embodiments of the present application further provide a top air outlet air conditioner outdoor unit, which comprises a machine shell and the air outlet top cover.

[0011] Optionally, the top air outlet air conditioner outdoor unit further comprises an axial flow fan, the axial flow fan is arranged in the machine shell and below the grid of the air outlet top cover, the axial flow fan comprises a hub and blades arranged in a circumferential direction of the hub; a vertical distance between a bottom end of the blade and a bottom surface of the grid is denoted as M, a vertical distance between the blade and a top surface of the grid is denoted as N, and a ratio of the M to the N is 0.76-0.92; and / or, a shortest distance from the axial flow fan to the second straight segment is denoted as W2, and 12mm≤W2≤30mm.

[0012] Optionally, the air outlet top cover comprises a flow guide ring, the flow guide ring is arranged at an edge of the grid and extends towards the bottom of the machine shell, the flow guide ring is in a cylindrical shape and is arranged around an outer periphery of the axial flow fan to form an air duct; a gap between the blade and the flow guide ring is denoted as a, an outer diameter of the axial flow fan is denoted as D, and a ratio of the a to the D is 0.31-0.35.

[0013] Optionally, the flow guide ring comprises a constant section and a variable section arranged in sequence, the constant section is fixedly connected with the grid, the variable section is arranged at one end of the constant section away from the grid, the inner diameter of the constant section is constant, and the inner diameter of the variable section gradually increases away from the constant section; the height of the flow guide ring is denoted as h1, the height of the variable section is denoted as h2, the ratio of h2 to h1 is 0.21-0.25; and / or, the height of the fan blade is denoted as H, the height of the variable section is denoted as h2, the ratio of H to h2 is 2-6.

[0014] The air outlet top cover and the outdoor air conditioner provided by the embodiment of the present application, by setting the inner wall of the air duct of the air outlet top cover comprising a circular arc section, a first straight line section, a second straight line section and a third straight line section connected in sequence along the circumference, the two ends of the circular arc section are connected with one end of the first straight line section and the third straight line section respectively, the first straight line section and the third straight line section are tangent to the circular arc section, and the two ends of the second straight line section are connected with the other end of the first straight line section and the third straight line section respectively, so that the air duct comprises a circular air duct and a trapezoidal air duct partially overlapping the circular air duct, compared with the traditional scheme with only the circular air duct, the present application increases the air outlet area of the air duct, thereby realizing the increase of the air outlet air volume and timely heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings. In the following description, the same reference numerals represent the same parts.

[0016] Figure 1 The structural schematic diagram of the air outlet top cover provided by the embodiment of the present application.

[0017] Figure 2 The structural schematic diagram of the air outlet top cover provided by the embodiment of the present application. Figure 1 The enlarged structural schematic diagram of part B of the air outlet top cover shown.

[0018] Figure 3 The structural schematic diagram of the air outlet top cover provided by the embodiment of the present application. Figure 1 The sectional view schematic diagram of the air outlet top cover along F-F direction shown.

[0019] Figure 4 The enlarged structural schematic diagram of part C of the air outlet top cover shown. Figure 3 The enlarged structural schematic diagram of part D of the air outlet top cover shown.

[0020] Figure 5 The enlarged structural schematic diagram of part D of the air outlet top cover shown. Figure 3 The enlarged structural schematic diagram of part D of the air outlet top cover shown.

[0021] Figure 6 Fig. 2 is a structural schematic view of another perspective of the air outlet top cover. Figure 1

[0022] Figure 7 Fig. 3 is a structural schematic view of the top air outlet air conditioner outdoor unit provided by the embodiment of the present application.

[0023] Figure 8 Fig. 4 is a partial structural schematic view of the top air outlet air conditioner outdoor unit. Figure 7

[0024] Figure 9 Fig. 5 is an enlarged structural schematic view of the partial E of the top air outlet air conditioner outdoor unit. Figure 8

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 100, air outlet top cover; 101, air duct; 102, circular arc segment; 103, first straight line segment; 104, second straight line segment; 105, third straight line segment; 111, extension; 112, flow guide slope; 113, straight edge; 114, flow guide rib; 115, electric control cavity; 120, grille; 121, air outlet hole; 122, center part; 123, connecting part; 124, curved rib; 125, reinforcing rib; 130, flow guide ring; 200, machine shell; 300, driving motor; 400, axial flow fan; 410, hub; 420, fan blade; 500, heat exchanger. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] ​​​In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "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 used 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 of 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, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The term "and / or" includes any and all combinations of one or more of the associated listed items.

[0030] This application provides an air outlet top cover 100, such as Figures 1-6 As shown, the air outlet cover 100 is provided with an air duct 101, which has an air inlet side and an air outlet side. The air outlet side of the air duct 101 is covered with a grille 120 having a plurality of air outlet holes 121. The inner wall of the air duct 101 includes an arc segment 102, a first straight segment 103, a second straight segment 104 and a third straight segment 105 connected sequentially along the circumference of the air duct 101. The two ends of the arc segment 102 are respectively connected to one end of the first straight segment 103 and the third straight segment 105. The first straight segment 103 and the third straight segment 105 are both tangent to the arc segment 102. The two ends of the second straight segment 104 are respectively connected to the other ends of the first straight segment 103 and the third straight segment 105.

[0031] The air outlet top cover 100 provided by the embodiments of the present application is characterized in that: the inner wall of the air duct 101 of the air outlet top cover 100 comprises a circular arc segment 102, a first straight line segment 103, a second straight line segment 104 and a third straight line segment 105 connected in sequence along the circumference thereof, the two ends of the circular arc segment 102 are connected to one end of the first straight line segment 103 and the third straight line segment 105 respectively, the first straight line segment 103 and the third straight line segment 105 are tangent to the circular arc segment 102, and the two ends of the second straight line segment 104 are connected to the other end of the first straight line segment 103 and the third straight line segment 105 respectively, so that the air duct 101 comprises a circular air duct 101 and a trapezoidal air duct 101 partially coinciding with the circular air duct 101. Compared with the traditional scheme of only having the circular air duct 101, the present application increases the air outlet area of the air duct 101, thereby achieving the increase of the air outlet air volume and the timely heat dissipation. It should be noted that the circular air duct refers to an air duct with a circular cross section, and the trapezoidal air duct refers to an air duct with a trapezoidal cross section.

[0032] In some embodiments of the present application, the grid 120 comprises a center plate and a rib, the rib is arranged between the center plate and the edge of the air duct 101, and a plurality of ribs are cross-connected to form a plurality of air outlet holes 121.

[0033] As shown in Figure 1 and Figure 6 , the center plate comprises a center part 122, the center part 122 is located in the middle of the air outlet side of the air duct 101, and the width of the center part 122 gradually decreases towards the direction close to the second straight line segment 104; the rib comprises a plurality of curved ribs 124 and a plurality of reinforcing ribs 125, the plurality of curved ribs 124 are arranged in a spaced manner from inside to outside around the center part 122, the shape of the curved rib 124 is the same as the edge profile of the center part 122, and the plurality of reinforcing ribs 125 are cross-connected with the plurality of curved ribs 124.

[0034] Specifically, the center plate further comprises a connecting part 123, the two ends of the connecting part 123 are connected to the narrower end of the center part 122 and the second straight line segment 104 respectively, wherein the narrower end of the center part 122 refers to the end with smaller width of the center part 122; the plurality of reinforcing ribs 125 are arranged in a spaced manner along the circumference of the center plate, and the distance between adjacent two reinforcing ribs 125 gradually increases in the direction from the center part 122 to the edge of the air duct 101.

[0035] In some embodiments of the present application, the air outlet top cover 100 is provided with an extension 111 outside the second straight section 104, the extension 111 has an electric control cavity 115; the top surface of the extension 111 forms a flow guide slope 112 connected with the second straight section 104 for guiding part of the airflow in the air duct 101 to the external environment. By providing the flow guide slope 112, the wind resistance of the second straight section 104 can be compensated, the air outlet air volume is increased, and timely heat dissipation is facilitated. Optionally, the extension 111 has a straight edge 113 arranged opposite to the second straight section 104, the flow guide slope 112 is provided with a plurality of flow guide ribs 114, the plurality of flow guide ribs 114 are arranged in the length direction of the second straight section 104 at intervals, the two ends of the flow guide ribs 114 are connected with the second straight section 104 and the straight edge 113 respectively, and the height and / or width of the flow guide ribs 114 gradually decreases in the direction from the second straight section 104 to the straight edge 113. By providing the flow guide ribs 114 on the flow guide slope 112, the wind resistance of the second straight section 104 can be further compensated, the air outlet air volume is increased, and timely heat dissipation is facilitated.

[0036] As shown in Figure 1 , the distance from the straight edge 113 to the second straight section 104 is denoted as W1, the distance from the center of the circular arc section 102 to the straight edge 113 is denoted as W, and the ratio of W1 to W is 0.20-0.40. By setting the ratio of W1 to W in the range of 0.20-0.40, the present application can balance the proportion of the air duct 101 and the extension 111 on the air outlet surface, maximize the effective air outlet area and air outlet efficiency. Exemplarily, the ratio of W1 to W can be 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40 or a range between any two values, and is preferably 0.36.

[0037] As shown in Figure 3 and Figure 4 , the inclination angle of the flow guide slope 112 is denoted as A1, and 20°≤A1≤35°. By setting the inclination angle A1 of the flow guide slope 112 in the range of 20°-35°, the present application can make the flow guide slope 112 better compensate the wind resistance of the second straight section 104, thereby facilitating the increase of the air outlet air volume and the timely heat dissipation air volume. Exemplarily, the inclination angle A1 of the flow guide slope 112 can be 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35° or a range between any two values, and is preferably 27°.

[0038] As shown in Figure 3 and Figure 4As shown, the height of the air outlet top cover 100 is h3, and the height of the guide slope 112 is D1. The ratio of D1 to h3 is 0.20-0.50. In the present application, the ratio of D1 to h3 is set to be within the range of 0.20-0.50, so as to facilitate the mold parting of the air outlet top cover 100. For example, the ratio of D1 to h3 can be 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, or a range between any two values, and preferably 0.32.

[0039] As shown in FIG. 1, Figure 1 the angle between the first straight line segment 103 and the third straight line segment 105 is A, and 50°≤A≤60°. In the present application, the angle A between the first straight line segment 103 and the third straight line segment 105 is set to be within the range of 50°-60°, so as to realize appearance differentiation, and at the same time, increase the air outlet area of the air duct 101, thereby increasing the air outlet air volume. For example, the angle A between the first straight line segment 103 and the third straight line segment 105 can be 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, or a range between any two values, and preferably 53°.

[0040] The present application also provides a top air outlet air conditioner outdoor unit, as shown in FIG. 1, Figures 7-9 which comprises a shell 200 and an air outlet top cover 100. The specific structure of the air outlet top cover 100 is referred to the above embodiments. The top of the shell 200 is provided with an air outlet, and the air outlet top cover 100 is arranged at the air outlet. Since the top air outlet air conditioner outdoor unit adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0041] Optionally, the top air outlet air conditioner outdoor unit further comprises a driving motor 300 and an axial flow fan 400. The driving motor 300 is arranged in the shell 200 and fixedly connected with the air outlet top cover 100. The driving motor 300 is located below the grille 120 of the air outlet top cover 100. The axial flow fan 400 is arranged on the output shaft of the driving motor 300 and can rotate under the action of the driving motor 300, so as to make the air in the shell 200 flow out through the grille 120.

[0042] The axial flow fan 400 comprises a hub 410 and a plurality of fan blades 420 arranged along the circumference of the hub 410 in sequence. Figure 7As shown, the vertical distance between the bottom end of the fan blade 420 and the bottom surface of the grille 120 is denoted as M, and the vertical distance between the fan blade 420 and the top surface of the grille 120 is denoted as N. The ratio of M to N is 0.76 to 0.92. By setting the ratio of M to N in the range of 0.76 to 0.92, this application can reduce wind resistance, increase the air volume, and facilitate timely heat dissipation. For example, the ratio of M to N can be 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.90, 0.91, 0.92, or any range between two values, preferably 0.90.

[0043] like Figure 1 As shown, the shortest distance from the axial fan 400 to the second straight segment 104 is denoted as W2, where 12mm ≤ W2 ≤ 30mm. By setting the shortest distance W2 from the axial fan 400 to the second straight segment 104 within the range of 12mm to 30mm, this application ensures that the second straight segment 104 of the air duct 101 will not collide with the axial fan 400, and that the airflow efficiency remains at a high level. For example, the shortest distance W2 from the axial fan 400 to the second straight segment 104 can be 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, or any range between two values, preferably 18.15mm.

[0044] In some embodiments of this application, the air outlet cover 100 includes a guide ring 130, which is disposed at the edge of the grille 120 and extends toward the bottom of the housing 200. The guide ring 130 is cylindrical and surrounds the outer periphery of the axial fan 400 to form an air duct 101. By providing the guide ring 130, the speed of the airflow can be increased, thereby improving the air outlet efficiency.

[0045] like Figure 7 As shown, the gap between the fan blade 420 and the guide ring 130 is denoted as 'a', and the outer diameter of the axial fan 400 is denoted as 'D'. The ratio of 'a' to 'D' is 0.31 to 0.35. This application optimizes the distance between the guide ring 130 and the fan blade 420 by setting the ratio of 'a' to 'D' within the range of 0.31 to 0.35. This allows for the reduction of noise in the air duct 101 while allowing for sufficient clearance for the rotation and installation of the fan blade 420. For example, the ratio of 'a' to 'D' can be 0.31, 0.315, 0.32, 0.325, 0.33, 0.335, 0.34, 0.345, 0.35, or any range between two values, preferably 0.31.

[0046] Optionally, the flow guide ring 130 comprises a constant section and a variable section arranged in sequence, the constant section is fixedly connected with the grille 120, the variable section is arranged at one end of the constant section away from the grille 120, the inner diameter of the constant section is constant, and the inner diameter of the variable section gradually increases away from the constant section. Specifically, the entire variable section forms a trumpet shape that opens outward, so that the variable section can increase the outer diameter of the airflow flowing thereto, and further more airflows can be sucked into the flow guide ring 130, thereby improving the working efficiency of the axial flow fan 400. At the same time, because the inner diameter of the variable section gradually increases and is greater than the inner diameter of the constant section, the cross-sectional wind speed of the variable section gradually increases, thereby reducing the vortex of the airflow, and also having a good inhibitory effect on the aerodynamic noise.

[0047] As shown in Figure 8 , the height of the flow guide ring 130 is denoted as h1, the height of the variable section is denoted as h2, and the ratio of h2 to h1 is 0.21-0.25. By setting the ratio of h2 to h1 in the range of 0.21-0.25, the present application can reduce the noise of the air duct 101. For example, the ratio of h2 to h1 can be 0.21, 0.215, 0.22, 0.225, 0.23, 0.235, 0.24, 0.245, 0.25, or a range between any two values, and is preferably 0.21.

[0048] As shown in Figure 8 , the height of the fan blade 420 is denoted as H, the height of the variable section is denoted as h2, and the ratio of H to h2 is 2.0-6.0. By setting the ratio of H to h2 in the range of 2.0-6.0, the present application can reduce turbulence and reduce the noise of the air duct 101. For example, the ratio of H to h2 can be 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, or a range between any two values, and is preferably 5.35.

[0049] In some embodiments of the present application, the top-outlet air conditioner outdoor unit further comprises a heat exchanger 500 fixed inside the casing 200, and the air outlet top cover 100 is arranged above the heat exchanger 500 and is fixedly connected with the heat exchanger 500 through the flow guide ring 130. When the top-outlet air conditioner outdoor unit is started, the air from outside enters the casing 200 through the air inlet on the casing 200, and then exchanges heat with the refrigerant under the action of the heat exchanger 500, and the air after heat exchange is finally discharged from the air outlet hole 121 of the air outlet top cover 100 under the drive of the axial flow fan 400.

[0050] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0051] The air outlet top cover and the outdoor air conditioner provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An air outlet top cover, characterized in that, The air outlet top cover (100) is provided with an air duct (101), the air duct (101) has an air inlet side and an air outlet side, and the air outlet side of the air duct (101) is covered with a grille (120) having a plurality of air outlet holes (121); The inner wall of the air duct (101) comprises a circular arc segment (102), a first straight line segment (103), a second straight line segment (104) and a third straight line segment (105) connected in sequence along the circumference of the air duct (101), both ends of the circular arc segment (102) are connected to one end of the first straight line segment (103) and the third straight line segment (105) respectively, the first straight line segment (103) and the third straight line segment (105) are tangent to the circular arc segment (102), and both ends of the second straight line segment (104) are connected to the other end of the first straight line segment (103) and the third straight line segment (105) respectively.

2. The air deflector top cover of claim 1, wherein, The grille (120) comprises a center plate and a rib, the center plate comprises a center part (122), the center part (122) is located in the middle of the air outlet side of the air duct (101), and the width of the center part (122) gradually decreases towards the direction close to the second straight line segment (104); The rib comprises a plurality of curved ribs (124) and a plurality of reinforcing ribs (125), a plurality of the curved ribs (124) are arranged in the center part (122) from inside to outside at intervals, the shape of the curved rib (124) is the same as the edge contour of the center part (122), and a plurality of the reinforcing ribs (125) are connected with a plurality of the curved ribs (124) to form a plurality of the air outlet holes (121).

3. The air deflector top cover of claim 2, wherein, The air outlet top cover (100) is provided with an extension (111) outside the second straight line segment (104), the top surface of the extension (111) forms a flow guide slope (112), and the flow guide slope (112) is connected with the second straight line segment (104) to guide part of the airflow in the air duct (101) to the external environment.

4. The air deflector top cover of claim 3, wherein, The extension (111) has a straight edge (113) arranged opposite to the second straight line segment (104), the flow guide slope (112) is provided with a plurality of flow guide ribs (114), the plurality of flow guide ribs (114) are arranged at intervals along the length direction of the second straight line segment (104), both ends of the flow guide rib (114) are connected to the second straight line segment (104) and the straight edge (113) respectively, and the height and / or width of the flow guide rib (114) gradually decreases along the direction from the second straight line segment (104) to the straight edge (113); And / or, the extension (111) has a straight edge (113) arranged opposite to the second straight line segment (104), the distance from the straight edge (113) to the second straight line segment (104) is denoted as W1, the distance from the center of the circular arc segment (102) to the straight edge (113) is denoted as W, and the ratio of W1 to W is 0.2-0.

4.

5. The air deflector top cover of claim 4, wherein, The inclination angle of the flow guide slope (112) is denoted as A1, and 20°≤A1≤35°. And / or, the height of the air outlet top cover (100) is denoted as h3, the height of the flow guide slope (112) is denoted as D1, and the ratio of D1 to h3 is 0.20-0.

50.

6. The air deflector of any one of claims 1-5, wherein: The angle between the first straight line segment (103) and the third straight line segment (105) is denoted as A, and 50°≤A≤60°.

7. A top-out air conditioner outdoor unit, characterized by, The air conditioner outdoor unit comprises a shell (200) and the air outlet top cover (100) according to any one of claims 1-6, and the top of the shell (200) is provided with an air outlet, and the air outlet top cover (100) is arranged at the air outlet.

8. The ejecting air conditioner outdoor unit according to claim 7, characterized in that, The top air outlet air conditioner outdoor unit further comprises an axial flow fan (400) arranged below the grille (120) of the air outlet top cover (100) in the shell (200), and the axial flow fan (400) comprises a hub (410) and fan blades (420) arranged in sequence along the circumference of the hub (410). The vertical distance between the bottom end of the fan blade (420) and the bottom surface of the grille (120) is denoted as M, and the vertical distance between the fan blade (420) and the top surface of the grille (120) is denoted as N, and the ratio of M to N is 0.76-0.92; and / or, the shortest distance from the axial flow fan (400) to the second straight line segment (104) is denoted as W2, and 12mm≤W2≤30mm.

9. The ejecting air conditioner outdoor unit according to claim 8, characterized in that, The air outlet top cover (100) comprises a flow guide ring (130) arranged at the edge of the grille (120) and extending towards the bottom of the shell (200), and the flow guide ring (130) is in a cylindrical shape and is arranged around the outer periphery of the axial flow fan (400) to form an air duct (101). The gap between the fan blade (420) and the flow guide ring (130) is denoted as a, and the outer diameter of the axial flow fan (400) is denoted as D, and the ratio of a to D is 0.31-0.

35.

10. The ejecting air conditioner outdoor unit according to claim 9, characterized in that, The flow guide ring (130) comprises a constant portion and a variable diameter portion arranged in sequence, the constant portion is fixedly connected with the grille (120), the variable diameter portion is arranged at one end of the constant portion away from the grille (120), the inner diameter of the constant portion is constant, and the inner diameter of the variable diameter portion gradually increases away from the constant portion. The height of the flow guide ring (130) is denoted as h1, and the height of the variable diameter portion is denoted as h2, and the ratio of h2 to h1 is 0.21-0.25; and / or, the height of the fan blade (420) is denoted as H, and the height of the variable diameter portion is denoted as h2, and the ratio of H to h2 is 2.0-6.0.

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