An air duct assembly and an air conditioner

Abstract

The present invention relates to the field of electrical appliances, and provides an air duct assembly and an air conditioner. The technical solution of the present invention solves the technical problem of unreasonable structural arrangement of the wind blocking mechanism. By restricting the profile lines of the air duct and the mounting bracket, the present application prevents the mounting bracket from protruding into the air duct, preventing the mounting bracket from obstructing part of the air flow and avoiding the generation of eddy currents inside the air duct. Moreover, by adding a rubber layer to the wind blocking member and controlling the key parameters between the rubber layer and the mounting bracket, the present application ensures the sealing performance of the moving mechanism, thereby avoiding the problem of air leakage when the wind blocking member is in the closed position.

Description

Technical Field

[0001] The present invention relates to the field of electrical appliances, and particularly to an air duct assembly and an air conditioner. Background Art

[0002] When an air conditioner has multiple air ducts, a wind blocking mechanism is usually arranged in the air duct of the air conditioner to control the opening or closing of the corresponding air duct, so as to realize various air outlet modes.

[0003] In the related art, when the wind blocking mechanism is installed in the air duct of the air conditioner, if the structure of the wind blocking mechanism is not reasonably arranged, it will affect the flow of air in the air duct and the performance of the air conditioner. Summary of the Invention

[0004] In order to solve the technical problem that the structure of the wind blocking mechanism in the related art is not reasonably arranged, an air duct assembly and an air conditioner are provided.

[0005] According to one aspect of the present invention, an air duct assembly is provided, which includes an air duct and a wind blocking mechanism; a groove is formed on the inner wall surface of the air duct; the wind blocking mechanism is arranged on the air duct, and includes: a mounting bracket mounted in the groove of the air duct; a wind blocking member rotatably arranged on the mounting bracket, the wind blocking member having a closed position for closing the air duct and an open position for opening the air duct; the projection of the air duct on a reference plane perpendicular to the rotation axis of the wind blocking member forms the profile of the air duct; the profile of the air duct includes a groove profile segment, a first air duct profile segment and a second air duct profile segment respectively connected to both ends of the groove profile segment, along the air flow direction in the air duct, the first air duct profile segment is located upstream of the second air duct profile segment; the profile of the mounting bracket formed by the projection on the reference plane is located at the groove; along the air flow direction in the air duct, taking the extension line of the first air duct profile segment as a reference line, the profile of the mounting bracket is flush with the reference line or located on the side of the reference line close to the groove.

[0006] Further, the first end of the wind blocking member is rotatably arranged on the mounting bracket, and there is a gap between the first end of the wind blocking member and the mounting bracket to allow the wind blocking member to rotate relative to the mounting bracket; the wind blocking mechanism further includes a sealing structure connected to the wind blocking member, and when the wind blocking member is in the closed position, one end of the sealing structure extends to the mounting bracket and covers the gap.

[0007] Further, the mounting bracket has a rib blocking portion, and when the wind blocking member is in the closed position, one end of the sealing structure extends beyond the wind blocking member and extends to the rib blocking portion, and at least part of the sealing structure fits with at least part of the rib blocking portion; or the mounting bracket has a gap for the sealing structure to pass through, and one end of the sealing structure extends beyond the wind blocking member and extends to the side of the gap far from the wind blocking member; or one end of the sealing structure extends beyond the first end of the wind blocking member and is bent to form a bent portion, and at least part of the bent portion fits with at least part of the surface of the mounting bracket close to the wind blocking member.

[0008] Further, when the mounting bracket has a rib blocking portion: the projection of the windshield on the reference plane forms the profile line of the windshield, and the profile line of the windshield includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment close to the mounting bracket. The center of the first arc segment is the rotation center of the windshield, and the radius of the first arc segment is r1; the mounting bracket includes a first side frame close to the first end of the windshield, and the first side frame is located at the groove; the projection of the first side frame on the reference plane forms the profile line of the first side frame. The profile line of the first side frame includes a second arc segment, a first straight line segment and a second straight line segment respectively connected to the two ends of the second arc segment. The first straight line segment and the second straight line segment respectively extend radially along the two ends of the second arc segment; the second arc segment is concentric with the first arc segment, and the radius of the second arc segment is r2; the projection of the rib blocking portion on the reference plane forms the profile line of the rib blocking portion. The profile line of the rib blocking portion is connected to the second arc segment and is located between the first arc segment and the second arc segment. The profile line of the rib blocking portion includes a third straight line segment, and the length of the third straight line segment is p; the distance between the end point of the third straight line segment close to the windshield and the windshield is m; the distance between the edge of the sealing structure far from the windshield and the outer edge of the rotating shaft profile line of the windshield is n; the included angle between the third straight line segment and the first straight line segment is α; the thickness of the sealing structure is q; wherein, r2 = r1 + m + p; m + 0.1 < n < m + p - 0.1; r1 is greater than or equal to 3 mm and less than or equal to 4 mm; p is greater than or equal to 2.5 mm and less than or equal to 3.5 mm; m is greater than or equal to 2 mm and less than or equal to 3 mm; α is greater than or equal to 60° and less than or equal to 70°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0009] Further, when the mounting bracket has a gap for the sealing structure to pass through: The projection of the windshield on the reference plane forms the profile line of the windshield. The profile line of the windshield includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment close to the mounting bracket. The center of the first arc segment is the rotation center of the windshield, and the radius of the first arc segment is r1. The mounting bracket includes a first frame near the first end of the windshield, and the first frame is located at the groove. The projection of the first frame on the reference plane forms the profile line of the first frame. The gap is provided on the first frame. The profile line of the first frame includes second and third arc segments on both sides of the gap, a first straight line segment connected to the end of the second arc segment away from the gap, and a second straight line segment connected to the end of the third arc segment away from the gap. The second and third arc segments are concentric with the first arc segment, and the radii of the second and third arc segments are both r2. The distance between the edge of the sealing structure away from the windshield and the outer edge of the rotating shaft profile line of the windshield is n. The width of the gap is s. The profile line of the gap includes a fourth straight line segment connected to the second arc segment, and the included angle between the fourth straight line segment and the first straight line segment is β. Wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2 < n < 15; s is greater than or equal to 1 mm and less than or equal to 2 mm; β is greater than or equal to 45° and less than or equal to 55°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0010] Further, when one end of the sealing structure extends beyond the first end of the windshield and is bent to form a bent portion: The projection of the windshield on the reference plane forms the profile line of the windshield. The profile line of the windshield includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment close to the mounting bracket. The center of the first arc segment is the rotation center of the windshield, and the radius of the first arc segment is r1. The mounting bracket includes a first frame near the first end of the windshield, and the first frame is located at the groove. The projection of the first frame on the reference plane forms the profile line of the first frame. The profile line of the first frame includes a second arc segment, a first straight line segment and a second straight line segment respectively connected to both ends of the second arc segment. The first and second straight line segments extend radially along both ends of the second arc segment. The second arc segment is concentric with the first arc segment, and the radius of the second arc segment is r2. The sealing structure includes a body that fits with the windshield and a bent portion that is bent relative to the body. The bent portion fits with the first straight line segment, and the included angle between the bent portion and the body is γ. The distance between the edge of the sealing structure away from the windshield and the outer edge of the rotating shaft profile line of the windshield is n. The thickness of the sealing structure is q. Wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2 - r1 + 1 < n < 15; γ is greater than or equal to 100° and less than or equal to 130°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0011] Further, the first air duct type line segment includes a fifth straight line segment connected to the groove type line segment. The extension line of the fifth straight line segment is the reference line, and the first straight line segment is on the extension line of the fifth straight line segment.

[0012] Further, the wind blocking mechanism has a multi-layer structure; the sealing structure is a rubber layer made of rubber material; the wind blocking piece is made of ABS material; the wind blocking mechanism further includes a foam layer made of foam material; the rubber layer is arranged above the wind blocking piece, the foam layer is arranged below the wind blocking piece, the air duct includes an upper air outlet duct and a lower air outlet duct, the wind blocking mechanism is arranged in the lower air outlet duct, and the wind blocking piece rotates downward from the closed position to the open position.

[0013] According to another aspect of the present invention, an air conditioner is further provided, including the above-mentioned air duct assembly.

[0014] Further, the air conditioner further includes: a volute, the volute is formed with an air duct, the air duct includes an upper air outlet duct, a blower cavity and a lower air outlet duct arranged in sequence along its height direction; a centrifugal blower, the centrifugal blower is arranged in the blower cavity; the wind blocking mechanism is located in the lower air outlet duct; the air conditioner has an upper air outlet mode and an upper and lower air outlet mode. When the air conditioner is in the upper air outlet mode, the wind blocking piece of the wind blocking mechanism is in the closed position; when the air conditioner is in the upper and lower air outlet mode, the wind blocking piece of the wind blocking mechanism is in the open position.

[0015] In this application, by restricting the profile lines of the air duct and the mounting bracket, the mounting bracket will not protrude into the air duct, preventing the mounting bracket from obstructing part of the air flow and avoiding the generation of eddy currents inside the air duct. And, in this application, by adding a rubber layer on the wind blocking piece and controlling the key parameters between the rubber layer and the mounting bracket to ensure the sealing of the moving mechanism, thereby avoiding the problem of air leakage when the wind blocking piece is in the closed position. Description of the Drawings

[0016] Figure 1 Shows a schematic structural diagram of an air conditioner in the related art;

[0017] Figure 2 Shows a schematic structural diagram of an air conditioner according to an optional embodiment of the present invention;

[0018] Figure 3 Shows an assembled structural schematic diagram of a part of the wind blocking mechanism according to Embodiment 1 of the present invention, wherein the wind blocking piece of the wind blocking mechanism is in the closed position;

[0019] Figure 4 Shows an assembled structural schematic diagram of a part of the wind blocking mechanism according to Embodiment 1 of the present invention, wherein the wind blocking piece of the wind blocking mechanism is in the open position;

[0020] Figure 5 Shows Figure 3 An enlarged view of a part of the wind blocking mechanism in

[0021] Figure 6 Shows Figure 3 An enlarged view of a partial structure of the windshield mechanism in

[0022] Figure 7 Shows a schematic diagram of the disassembled structure of the windshield mechanism of Embodiment 1 of the present invention;

[0023] Figure 8 Shows Figure 7 A schematic diagram of the structure of the mounting bracket in

[0024] Figure 9 Shows Figure 7 A schematic diagram of the structure of the sealing structure in

[0025] Figure 10 Shows Figure 7 A schematic diagram of the structure of the windshield in

[0026] Figure 11 Shows Figure 7 A schematic diagram of the assembly structure among the windshield, the mounting bracket and the sealing structure in

[0027] Figure 12 Shows a schematic diagram of the structure of an air conditioner according to another alternative embodiment of the present invention;

[0028] Figure 13 Shows a schematic diagram of the assembly structure of a partial structure of the windshield mechanism of Embodiment 2 of the present invention, wherein the windshield of the windshield mechanism is in the closed position;

[0029] Figure 14 Shows a schematic diagram of the assembly structure of a partial structure of the windshield mechanism of Embodiment 2 of the present invention, wherein the windshield of the windshield mechanism is in the open position;

[0030] Figure 15 Shows Figure 13 An enlarged view of a partial structure of the windshield mechanism in

[0031] Figure 16 Shows Figure 13 An enlarged view of a partial structure of the windshield mechanism in

[0032] Figure 17 Shows a schematic diagram of the disassembled structure of the windshield mechanism of Embodiment 2 of the present invention;

[0033] Figure 18 Shows Figure 17 A schematic diagram of the structure of the mounting bracket in

[0034] Figure 19 Shows Figure 17 A schematic diagram of the structure of the sealing structure in

[0035] Figure 20 shows Figure 17 a schematic structural view of the windshield in

[0036] Figure 21 shows an assembled structural view of a part of the windshield mechanism according to the third embodiment of the present invention, wherein the windshield of the windshield mechanism is in the closed position;

[0037] Figure 22 shows an assembled structural view of a part of the windshield mechanism according to the third embodiment of the present invention, wherein the windshield of the windshield mechanism is in the open position;

[0038] Figure 23 shows Figure 21 an enlarged view of a part of the windshield mechanism in

[0039] Figure 24 shows Figure 21 an enlarged view of a part of the windshield mechanism in

[0040] Figure 25 shows a disassembled structural view of the windshield mechanism according to the third embodiment of the present invention;

[0041] Figure 26 shows Figure 25 a schematic structural view of the mounting bracket in

[0042] Figure 27 shows Figure 25 a schematic structural view of the sealing structure in

[0043] Figure 28 shows Figure 25 a schematic structural view of the windshield in

[0044] Figure 29 shows a comparison diagram of the velocity simulation of the internal cross-section of the air duct before and after improvement;

[0045] Figure 30 shows a comparison diagram of the velocity vector simulation inside the air duct before and after improvement.

[0046] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0047] In the drawings:

[0048] 1. Air duct; 101. Groove; 1011. Groove-shaped line segment; 1012. First air duct-shaped line segment; 10121. Fifth straight line segment; 1013. Second air duct-shaped line segment; 2. Gap; 3. Centrifugal fan; 4. Windshield mechanism; 10. Mounting bracket; 11. Ribbed portion; 111. Third straight line segment; 12. Gap; 13. First frame; 131. Second arc-shaped line segment; 132. First straight line segment; 133. Second straight line segment; 134. Third arc-shaped line segment; 135. Fourth straight line segment; 14. Slide rail; 15. Second frame; 20. Windshield; 21. First arc-shaped line segment; 22. Connecting groove; 23. Plate body; 24. Rotating shaft; 25. Limiting shaft; 26. Fixed protrusion; 27. Fixed hole; 30. Sealing structure; 31. Bending portion; 32. Body; 33. Connecting rib; 34. Through hole; 40. Foam layer; 41. Connecting hole; 50. Driving motor; 60. First transmission gear; 70. Second transmission gear; 80. Motor box cover; 90. Cover plate. Detailed implementation manner

[0049] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] In order to solve the technical problem that the structural setting of the windshield mechanism in the related art is unreasonable, the present invention provides an air duct assembly and an air conditioner.

[0051] As Figure 1 shown, in the related art, a part of the structure on the left side of the mounting bracket of the windshield mechanism protrudes into the air duct. When the windshield is in the open position, the protrusion of the mounting bracket into the air duct will affect the air flow in the air duct, and it is easy to generate eddy currents inside the air duct, as Figure 30 shown before improvement, and there are many low-speed areas inside the air duct, resulting in poor performance of the air conditioner. And in Figure 1 , in order to facilitate the rotation of the windshield relative to the mounting bracket, there is usually a gap between the mounting bracket and the windshield, resulting in easy air leakage from the gap when the windshield is in the closed position, resulting in poor sealing performance of the windshield mechanism, resulting in a reduction in the upper air output volume of the air conditioner, and further resulting in poor performance of the air conditioner. The structure of the windshield mechanism in this application is optimized. After improvement, it can avoid the generation of eddy currents in the air duct and reduce the low-speed areas, as Figure 29 and Figure 30 shown.

[0052] The structure of the wind deflector mechanism in this application has been optimized. This application provides three embodiments. Embodiment 1 is as follows Figures 2 to 11 shown, in which Figure 2 shows the relative positional relationship among the wind deflector mechanism 4, the air duct 1, and the centrifugal fan 3 when the wind deflector mechanism is applied to an air conditioner; Embodiment 2 is as follows Figures 12 to 20 shown, in which Figure 12 shows the relative positional relationship among the wind deflector mechanism 4, the air duct 1, and the centrifugal fan 3 when the wind deflector mechanism is applied to an air conditioner; Embodiment 3 is as follows Figures 21 to 28 shown.

[0053] As Figures 2 to 28 shown, this application provides an air duct assembly, which includes an air duct 1 and a wind deflector mechanism 4; a groove 101 is formed on the inner wall surface of the air duct 1; the wind deflector mechanism 4 is arranged on the air duct 1 and includes: a mounting bracket 10 installed in the groove 101 of the air duct 1; a wind deflector 20 rotatably arranged on the mounting bracket 10, and the wind deflector 20 has a closed position for closing the air duct 1 and an open position for opening the air duct 1; the projection of the air duct 1 on a reference plane perpendicular to the rotation axis of the wind deflector 20 forms the profile of the air duct 1; the profile of the air duct 1 includes a groove profile segment 1011, a first air duct profile segment 1012 and a second air duct profile segment 1013 respectively connected to both ends of the groove profile segment 1011. Along the flow direction of the air flow in the air duct 1, the first air duct profile segment 1012 is located upstream of the second air duct profile segment 1013; the profile of the mounting bracket 10 formed by the projection of the mounting bracket 10 on the reference plane is located at the groove 101; along the flow direction of the air flow in the air duct 1, taking the extension line of the first air duct profile segment 1012 as a reference line, the profile of the mounting bracket 10 is flush with the reference line or located on the side of the reference line close to the groove 101.

[0054] In this way, when optimizing the structure of the wind deflector mechanism in this application, the relative positional relationship between the profile of the mounting bracket 10 and the air duct 1 is defined, so as to avoid the mounting bracket 10 protruding into the air duct 1 and hindering the air flow.

[0055] Optionally, the first end of the wind deflector 20 is rotatably arranged on the mounting bracket 10, and there is a gap 2 between the first end of the wind deflector 20 and the mounting bracket 10 to allow the wind deflector 20 to rotate relative to the mounting bracket 10; the wind deflector mechanism further includes a sealing structure 30 connected to the wind deflector 20. When the wind deflector 20 is in the closed position, one end of the sealing structure 30 extends to the mounting bracket 10 and covers the gap 2.

[0056] In this way, when optimizing the structure of the wind deflector mechanism in this application, a sealing structure 30 cooperating with the mounting bracket 10 is provided. When the wind deflector 20 is in the closed position, the sealing structure 30 is used to cover the gap 2 to avoid the air flow passing through the gap 2, thereby avoiding air leakage.

[0057] Optionally, the sealing structure 30 is made of an elastic material. When the windshield 20 rotates, the sealing structure 30 is driven to rotate and undergoes elastic deformation; when the windshield 20 rotates in the reverse direction, the sealing structure 30 recovers its elastic deformation.

[0058] Optionally, the sealing structure 30 is a plate structure made of a rubber material.

[0059] Optionally, as long as the sealing structure 30 can seal the gap 2, other materials or other structures can also be used, which all fall within the protection scope of this application.

[0060] Optionally, the mounting bracket 10 has a rib portion 11. One end of the sealing structure 30 extends beyond the windshield 20 and reaches the rib portion 11, and at least part of the sealing structure 30 is in contact with at least part of the rib portion 11. In this way, when optimizing the structure of the windshield mechanism in this application, the rib portion 11 is provided on the mounting bracket 10, and the rib portion 11 and the sealing structure 30 are used in cooperation to avoid air leakage.

[0061] Optionally, the mounting bracket 10 has a gap 12 through which the sealing structure 30 passes. One end of the sealing structure 30 extends beyond the windshield 20 and reaches the side of the gap 12 away from the windshield 20. In this way, when optimizing the structure of the windshield mechanism in this application, the gap 12 is provided on the mounting bracket 10, and the sealing structure 30 and the gap 12 are used in cooperation to avoid air leakage.

[0062] Optionally, when the gap 12 is provided on the mounting bracket 10, it is necessary to limit the sizes of the gap 12 and the mounting bracket 10 to avoid excessive air leakage through the gap 12 and to avoid the gap 12 being too small, which is not conducive to installation.

[0063] Optionally, one end of the sealing structure 30 extends beyond the first end of the windshield 20 and is bent to form a bent portion 31, and at least part of the bent portion 31 is in contact with at least part of the surface of the mounting bracket 10 close to the windshield 20. In this way, when optimizing the structure of the windshield mechanism in this application, the bent portion 31 of the sealing structure 30 is used in contact with the mounting bracket 10 to avoid air leakage.

[0064] Optionally, according to the shape of the mounting bracket 10, the contact position of the bent portion 31 is set while avoiding affecting the rotation of the windshield 20.

[0065] This application also specifically defines the shapes and parameters of the mounting bracket 10, the windshield 20, and the sealing structure 30, so as to further ensure no air leakage at the gap 2. Further elaboration will be made below in conjunction with the accompanying drawings for Embodiment 1 to Embodiment 3.

[0066] Embodiment 1

[0067] As Figures 2 to 11As shown, optionally, when the mounting bracket 10 has a rib portion 11: The projection of the windshield member 20 on the reference plane forms the profile line of the windshield member 20. The profile line of the windshield member 20 includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment 21 close to the mounting bracket 10. The center of the first arc segment 21 is the rotation center of the windshield member 20, and the radius of the first arc segment 21 is r1. The mounting bracket 10 includes a first side frame 13 close to the first end of the windshield member 20. The first side frame 13 is located at the groove 101. The projection of the first side frame 13 on the reference plane forms the profile line of the first side frame 13. The profile line of the first side frame 13 includes a second arc segment 131, a first straight line segment 132 and a second straight line segment 133 respectively connected to both ends of the second arc segment 131. The first straight line segment 132 and the second straight line segment 133 respectively extend radially along both ends of the second arc segment 131. The second arc segment 131 is concentric with the first arc segment 21, and the radius of the second arc segment 131 is r2. The projection of the rib portion 11 on the reference plane forms the profile line of the rib portion 11. The profile line of the rib portion 11 is connected to the second arc segment 131 and is located between the first arc segment 21 and the second arc segment 131. The profile line of the rib portion 11 includes a third straight line segment 111, and the length of the third straight line segment 111 is p. The distance between the end point of the third straight line segment 111 close to the windshield member 20 and the windshield member 20 is m. The distance between the edge of the sealing structure 30 far from the windshield member 20 and the outer edge of the rotating shaft profile line of the windshield member 20 is n. The included angle between the third straight line segment 111 and the first straight line segment 132 is α. The thickness of the sealing structure 30 is q. Wherein, r2 = r1 + m + p; m + 0.1 < n < m + p - 0.1; r1 is greater than or equal to 3 mm and less than or equal to 4 mm; p is greater than or equal to 2.5 mm and less than or equal to 3.5 mm; m is greater than or equal to 2 mm and less than or equal to 3 mm; α is greater than or equal to 60° and less than or equal to 70°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0068] In this embodiment, through the above limitations, the sealing performance of the windshield member 20 in the closed position is further ensured.

[0069] The windshield member 20 rotates and moves on the slide rail 14 of the mounting bracket 10, and the rib portion 11 is used to ensure the sealing performance of the moving mechanism. As Figures 2 to 4 shown, when the windshield member 20 is in the open position, the air flow is sucked in by the centrifugal fan, flows through the windshield mechanism, and flows out from the air duct; when the windshield member 20 is in the closed position, the air flow is blocked by the windshield member 20, and the air flow will not flow out from the air duct.

[0070] Preferably, α = 65°, p = 3 mm, m = 2.5 mm, r1 = 3.5 mm, n = 4 mm, q = 1.5 mm.

[0071] When adopting this parameter design method, the mounting bracket is prevented from protruding into the air duct, ensuring that the mounting bracket does not obstruct the air flow, thereby avoiding the generation of eddy currents inside the air duct and increasing the air volume of the whole machine. At the same time, by adding a rubber layer above the windshield and adding a rib on the mounting bracket, controlling the distance n between the outer edge of the rubber layer exceeding the rotation axis of the windshield, the rubber thickness q, the rib length p, and the angle α between the third straight line segment 111 and the first straight line segment 132, the sealing performance in the closed position of the windshield can be ensured.

[0072] Embodiment 2

[0073] As Figures 12 to 20 shown, when the mounting bracket 10 has a gap 12 for the sealing structure 30 to pass through: the projection of the windshield 20 on the reference plane forms the profile line of the windshield 20, and the profile line of the windshield 20 includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment 21 close to the mounting bracket 10. The center of the first arc segment 21 is the rotation center of the windshield 20, and the radius of the first arc segment 21 is r1; the mounting bracket 10 includes a first frame 13 close to the first end of the windshield 20, and the first frame 13 is located at the groove 101; the projection of the first frame 13 on the reference plane forms the profile line of the first frame 13, and the gap 12 is provided on the first frame 13; the profile line of the first frame 13 includes a second arc segment 131 and a third arc segment 134 located on both sides of the gap 12, a first straight line segment 132 connected to the end of the second arc segment 131 far from the gap 12, and a second straight line segment 133 connected to the end of the third arc segment 134 far from the gap 12; the second arc segment 131 and the third arc segment 134 are both concentric with the first arc segment 21, and the radii of the second arc segment 131 and the third arc segment 134 are both r2; the distance between the edge of the sealing structure 30 far from the windshield 20 and the outer edge of the rotating shaft profile line of the windshield 20 is n; the width of the gap 12 is s; the profile line of the gap 12 includes a fourth straight line segment 135 connected to the second arc segment 131, and the angle between the fourth straight line segment 135 and the first straight line segment 132 is β; wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2 < n < 15; s is greater than or equal to 1 mm and less than or equal to 2 mm; β is greater than or equal to 45° and less than or equal to 55°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0074] In this embodiment, through the above limitations, the sealing performance of the windshield 20 in the closed position is further ensured.

[0075] The windshield 20 rotates and moves on the slide rail 14 of the mounting bracket 10, and the rubber layer passes through the gap of the mounting bracket to ensure its sealing performance.

[0076] Preferably, β = 50°, s = 1.5 mm, r1 = 3.5 mm, r2 = 9 mm, n = 13 mm, q = 1.5 mm.

[0077] When adopting this parameter design method, the installation bracket is prevented from protruding into the air duct, ensuring that the installation bracket does not obstruct the air flow, thereby avoiding the generation of eddy currents inside the air duct and improving the air volume of the whole machine. At the same time, by adding a rubber layer above the wind deflector and adding a gap on the installation bracket, the distance n that the rubber layer extends beyond the outer edge of the rotation axis of the wind deflector, the rubber thickness q, the gap width s, and the angle β between the fourth straight line segment 135 and the first straight line segment 132 are controlled as parameters to ensure the sealing performance in the closed position of the wind deflector.

[0078] Embodiment III

[0079] As Figures 21 to 28 shown, optionally, when one end of the sealing structure 30 extends beyond the first end of the wind deflector 20 and is bent to form a bent portion 31: the projection of the wind deflector 20 on the reference plane forms the profile line of the wind deflector 20, and the profile line of the wind deflector 20 includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment 21 close to the installation bracket 10. The center of the first arc segment 21 is the rotation center of the wind deflector 20, and the radius of the first arc segment 21 is r1; the installation bracket 10 includes a first frame 13 close to the first end of the wind deflector 20, and the first frame 13 is located at the groove 101; the projection of the first frame 13 on the reference plane forms the profile line of the first frame 13. The profile line of the first frame 13 includes a second arc segment 131, a first straight line segment 132 and a second straight line segment 133 respectively connected to both ends of the second arc segment 131. The first straight line segment 132 and the second straight line segment 133 respectively extend radially along both ends of the second arc segment 131; the second arc segment 131 is concentric with the first arc segment 21, and the radius of the second arc segment 131 is r2; the sealing structure 30 includes a body 32 that fits with the wind deflector 20 and a bent portion 31 that is bent relative to the body 32. The bent portion 31 fits with the first straight line segment 132, and the angle between the bent portion 31 and the body 32 is γ; the distance between the edge of the sealing structure 30 far from the wind deflector 20 and the outer edge of the rotating shaft profile line of the wind deflector 20 is n; the thickness of the sealing structure 30 is q; wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2 - r1 + 1 < n < 15; γ is greater than or equal to 100° and less than or equal to 130°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

[0080] In this embodiment, through the above limitations, the sealing performance of the wind deflector 20 in the closed position is further ensured.

[0081] At the same time, the contact part between the rubber layer and the outside of the wind deflector rotating shaft is strengthened and fixed by screws or glue. The part of the rubber layer that extends beyond the outer edge of the wind deflector rotating shaft is fixed on the installation bracket by means of screws, buckles or glue, etc. The wind deflector 20 rotates and moves on the slide rail 14 of the installation bracket 10, and the retaining rib portion 11 is used to ensure the sealing performance of the moving mechanism. AsFigure 21 and Figure 22 As shown, when the wind deflector rotates from the closed position to the open position, since the rubber layer is elastic, the rubber layer is stretched during the rotation process.

[0082] Preferably, γ = 115°, r1 = 3.5 mm, r2 = 9 mm, n = 9 mm, q = 1.5 mm.

[0083] When adopting this parameter design method, by fixing the part of the rubber layer that extends beyond the outer edge of the wind deflector rotation axis on the mounting bracket, it is avoided that the mounting bracket and the rubber layer protrude into the air duct, ensuring that the mounting bracket and the rubber layer do not obstruct the air flow. At the same time, by adding a bent rubber layer above the wind deflector, controlling the parameters of the distance n that the rubber layer extends beyond the outer edge of the wind deflector rotation axis, the rubber thickness q, and the angle γ at the bend of the rubber layer, the sealing performance in the closed position of the wind deflector can be ensured.

[0084] As Figure 6 、 Figure 16 、 Figure 24 As shown, the first air duct type line segment 1012 includes a fifth straight line segment 10121 connected to the groove type line segment 1011. The extension line of the fifth straight line segment 10121 is the reference line, and the first straight line segment 132 is on the extension line of the fifth straight line segment 10121. In this way, by defining the profile of the air duct 1 and the profile of the mounting bracket 10, it is avoided that the mounting bracket protrudes into the air duct 1 and obstructs the air flow.

[0085] As Figures 2 to 28 As shown, the wind deflector mechanism has a multi-layer structure; optionally, the sealing structure 30 is a rubber layer made of rubber material; the wind deflector 20 is made of ABS material; the wind deflector mechanism further includes a foam layer 40 made of foam material; the rubber layer is arranged above the wind deflector 20, the foam layer 40 is arranged below the wind deflector 20, the air duct 1 includes an upper air outlet duct and a lower air outlet duct, and the wind deflector mechanism is arranged in the lower air outlet duct, and the wind deflector 20 rotates downward from the closed position to the open position. In this way, the present application provides a wind deflector mechanism with a multi-layer structure, optimizes the materials of each layer structure, utilizes the performance of the materials themselves to improve the wind blocking effect of the wind deflector mechanism. The foam layer 40 has a heat preservation effect, and the rubber layer has a sealing effect.

[0086] Optionally, the main body of the rubber layer is connected to the wind deflector 20, and one edge of the rubber layer extends out of the wind deflector 20 and extends to the mounting bracket 10 to cover the gap 2 and avoid air leakage.

[0087] Optionally, the wind deflector 20 is a wind deflector plate, the sealing structure 30 is a rubber plate, and the foam layer 40 is a foam plate.

[0088] Optionally, the rubber layer and the windshield 20 are connected by fasteners, buckles or glue; and / or the part of the rubber layer extending beyond the windshield 20 is connected to the mounting bracket 10 by fasteners, buckles or glue; and / or the foam layer 40 and the windshield 20 are connected by fasteners, buckles or glue.

[0089] Optionally, as Figure 9 shown, a through hole 34 is provided at the center of the rubber layer, which can save materials and reduce costs.

[0090] Optionally, as Figure 11 shown, the windshield 20 has a fixing protrusion 26, and a fixing hole 27 is provided on the fixing protrusion 26; a connecting hole 41 is provided on the foam layer 40, and the foam layer 40 is sleeved on the fixing protrusion 26 through the connecting hole 41; the windshield mechanism further includes a fixing member, and the fixing member is connected to the fixing hole 27 and presses on the foam layer 40 to fixedly connect the foam layer 40 and the windshield 20.

[0091] Optionally, connecting ribs 33 are arranged on the rubber layer. The windshield 20 is provided with a connecting groove 22, and the connecting groove 22 matches the connecting ribs 33 on the rubber layer. The rubber layer and the windshield 20 are fixedly connected by interference connection of the concave-convex structure.

[0092] Optionally, the fixing member is a screw, and the fixing hole 27 is a screw hole.

[0093] This application also provides an air conditioner, including the above-mentioned and the following air duct assemblies. The air conditioner uses the windshield mechanism to achieve different air outlet modes. At the same time, due to the effect of making the air flow more smooth and / or avoiding air leakage provided by the windshield mechanism of this application, the performance of the air conditioner can be improved.

[0094] Optionally, the air conditioner further includes: a volute, a duct 1 is formed in the volute, and the duct 1 includes an upper air outlet duct, a blower chamber and a lower air outlet duct arranged in sequence along its height direction; a centrifugal blower 3, the centrifugal blower is arranged in the blower chamber; the windshield mechanism 4 is located in the lower air outlet duct; the air conditioner has an upper air outlet mode and an upper and lower air outlet mode. When the air conditioner is in the upper air outlet mode, the windshield 20 of the windshield mechanism 4 is in the closed position; when the air conditioner is in the upper and lower air outlet mode, the windshield 20 of the windshield mechanism 4 is in the open position. In this way, the air conditioner provided by this application has an upper air outlet mode and an upper and lower air outlet mode, and the user can select different air outlet modes according to needs.

[0095] Optionally, the centrifugal blower is a single centrifugal double-suction blower.

[0096] Optionally, as Figures 7 to 10 、 Figures 17 to 20 、 Figures 25 to 28As shown in the figure, the mounting bracket 10 has a slide rail. The wind shield 20 includes a plate body 23 and a rotating shaft 24. The first end of the plate body 23 is provided with the rotating shaft 24. The wind shield 20 further includes a limiting shaft 25 that is slidably engaged with the slide rail. The limiting shaft 25 is disposed on the side surface of the plate body 23 and is spaced apart from the rotating shaft 24. The wind shield mechanism further includes a driving motor 50, a first transmission gear 60, a second transmission gear 70, a motor box cover 80, and a cover plate 90. The cover plate 90 is connected to the mounting bracket 10, and the motor box cover 80 is connected to the cover plate 90. The first transmission gear 60 is drivingly connected to the output end of the driving motor 50. The second transmission gear 70 is engaged with the first transmission gear 60, and the second transmission gear 70 is connected to the rotating shaft 24. The driving motor 50 drives the wind shield 20 to rotate between an open position and a closed position.

[0097] Optionally, the mounting bracket 10, the rubber layer, the wind shield 20, the foam layer 40, the first transmission gear 60, the second transmission gear 70, the cover plate 90, the driving motor 50, and the motor box cover 80 are connected and fixed by means of a concave-convex structure, a buckle, or a screw.

[0098] Optionally, the wind shield mechanism provided in the present application is applied to an up-and-down air outlet cabinet air conditioner. The wind shield is rotatably provided, and the structure is simple and easy to assemble.

[0099] The present invention provides a parametric design method for a wind shield movement mechanism. By restricting the outer profile lines of the air duct and the mounting bracket, the mounting bracket will not protrude into the air duct, preventing the mounting bracket from obstructing part of the air flow and avoiding the generation of eddy currents inside the air duct. Moreover, by adding a rubber layer to the wind shield and controlling the key parameters between the rubber layer and the mounting bracket, the sealing performance of the movement mechanism can be ensured, thereby avoiding the problem of air leakage when the wind shield is in the closed position. The present application solves the problem of the existence of eddy currents inside the air duct when the wind shield is in the open position. The present application also solves the problem of air leakage when the wind shield is in the closed state.

[0100] In the present application, by restricting the first straight line segment 132 on the mounting bracket to be on the extension line of the fifth straight line segment 10121 of the air duct profile line, the mounting bracket is prevented from protruding into the air duct, ensuring that the mounting bracket does not obstruct the air flow, and further avoiding the generation of eddy currents inside the air duct and improving the air volume of the whole machine. By changing the structure near the rotation axis of the mounting bracket and the size and shape of the rubber layer, controlling the key parameters such as the distance n that the rubber layer extends beyond the outer edge of the wind shield rotation axis, the rubber thickness q, the length p of the retaining rib, or the gap width s and the included angles α, β, or γ, the sealing performance in the closed position of the wind shield can be ensured.

[0101] As Figure 29 and Figure 30 shown, before the improvement, there were large low-speed areas and large eddy currents inside the air duct. After the improvement according to the above parametric design, the low-speed areas and eddy current areas inside the air duct have been well improved.

[0102] The above has specifically shown and described exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, arrangements, or implementation manners described herein; rather, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

[0103] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0104] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0105] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0106] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be oriented "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0107] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned figures are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0108] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air duct assembly, characterized in that, It includes an air duct (1) and a wind shielding mechanism (4); A groove (101) is formed on the inner wall surface of the air duct (1); The wind shielding mechanism (4) is arranged on the air duct (1) and includes: A mounting bracket (10) mounted in the groove (101) of the air duct (1); A wind shielding member (20) rotatably arranged on the mounting bracket (10), and the wind shielding member (20) has a closed position for closing the air duct (1) and an open position for opening the air duct (1); The projection of the air duct (1) on a reference plane perpendicular to the rotation axis of the wind shielding member (20) forms the profile of the air duct (1); the profile of the air duct (1) includes a groove profile segment (1011), a first air duct profile segment (1012) and a second air duct profile segment (1013) respectively connected to both ends of the groove profile segment (1011). Along the flowing direction of the air flow in the air duct (1), the first air duct profile segment (1012) is located upstream of the second air duct profile segment (1013); The profile of the mounting bracket (10) formed by the projection of the mounting bracket (10) on the reference plane is located at the groove (101); along the flowing direction of the air flow in the air duct (1), taking the extension line of the first air duct profile segment (1012) as a reference line, the profile of the mounting bracket (10) is flush with the reference line or located on the side of the reference line close to the groove (101).

2. The air duct assembly according to claim 1, characterized in that, The first end of the wind shielding member (20) is rotatably arranged on the mounting bracket (10), and there is a gap (2) between the first end of the wind shielding member (20) and the mounting bracket (10) to allow the wind shielding member (20) to rotate relative to the mounting bracket (10); The wind shielding mechanism further includes a sealing structure (30), and the sealing structure (30) is connected to the wind shielding member (20). When the wind shielding member (20) is in the closed position, one end of the sealing structure (30) extends to the mounting bracket (10) and covers the gap (2).

3. The air duct assembly according to claim 2, characterized in that, The mounting bracket (10) has a rib blocking portion (11). When the wind shielding member is in the closed position, one end of the sealing structure (30) extends beyond the wind shielding member (20) and reaches the rib blocking portion (11), and at least part of the sealing structure (30) is in contact with at least part of the rib blocking portion (11); or The mounting bracket (10) has a slit (12) for the sealing structure (30) to pass through, and one end of the sealing structure (30) extends beyond the wind shielding member (20) and reaches the side of the slit (12) away from the wind shielding member (20); or One end of the sealing structure (30) extends beyond the first end of the wind shielding member (20) and is bent to form a bent portion (31), and at least part of the bent portion (31) is in contact with at least part of the surface of the mounting bracket (10) close to the wind shielding member (20).

4. The air duct assembly according to claim 3, characterized in that, When the mounting bracket (10) has the rib blocking portion (11): The projection of the windshield member (20) on the reference plane forms the profile line of the windshield member (20). The profile line of the windshield member (20) includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment (21) close to the mounting bracket (10). The center of the first arc segment (21) is the rotation center of the windshield member (20), and the radius of the first arc segment (21) is r1; The mounting bracket (10) includes a first frame (13) close to the first end of the windshield member (20). The first frame (13) is located at the groove (101). The projection of the first frame (13) on the reference plane forms the profile line of the first frame (13). The profile line of the first frame (13) includes a second arc segment (131), a first straight line segment (132) and a second straight line segment (133) respectively connected to both ends of the second arc segment (131). The first straight line segment (132) and the second straight line segment (133) respectively extend along the radial directions of both ends of the second arc segment (131). The second arc segment (131) is concentric with the first arc segment (21), and the radius of the second arc segment (131) is r2; The projection of the rib blocking portion (11) on the reference plane forms the profile line of the rib blocking portion (11). The profile line of the rib blocking portion (11) is connected to the second arc segment (131) and is located between the first arc segment (21) and the second arc segment (131). The profile line of the rib blocking portion (11) includes a third straight line segment (111), and the length of the third straight line segment (111) is p; The distance between the end point of the third straight line segment (111) close to the windshield member (20) and the windshield member (20) is m; The distance between the edge of the sealing structure (30) far from the windshield member (20) and the outer edge of the rotating shaft profile line of the windshield member (20) is n; The included angle between the third straight line segment (111) and the first straight line segment (132) is α; The thickness of the sealing structure (30) is q; Wherein, r2 = r1 + m + p; m + 0.1 < n < m + p - 0.1; r1 is greater than or equal to 3 mm and less than or equal to 4 mm; p is greater than or equal to 2.5 mm and less than or equal to 3.5 mm; m is greater than or equal to 2 mm and less than or equal to 3 mm; α is greater than or equal to 60° and less than or equal to 70°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

5. The air duct assembly according to claim 3, characterized in that, When the mounting bracket (10) has a gap (12) for the sealing structure (30) to pass through: The projection of the windshield member (20) on the reference plane forms the profile line of the windshield member (20). The profile line of the windshield member (20) includes a rotating shaft profile line. The rotating shaft profile line includes a first arc segment (21) close to the mounting bracket (10). The center of the first arc segment (21) is the rotation center of the windshield member (20), and the radius of the first arc segment (21) is r1; The mounting bracket (10) includes a first frame (13) near the first end of the windshield member (20), and the first frame (13) is located at the groove (101); the projection of the first frame (13) on the reference plane forms the profile line of the first frame (13), and the gap (12) is provided on the first frame (13); the profile line of the first frame (13) includes a second arc segment (131) and a third arc segment (134) on both sides of the gap (12), a first straight segment (132) connected to the end of the second arc segment (131) away from the gap (12), and a second straight segment (133) connected to the end of the third arc segment (134) away from the gap (12); Both the second arc segment (131) and the third arc segment (134) are concentrically arranged with the first arc segment (21), and the radii of the second arc segment (131) and the third arc segment (134) are both r2; The distance between the edge of the sealing structure (30) away from the windshield member (20) and the outer edge of the axis profile line of the windshield member (20) is n; The width of the gap (12) is s; The profile line of the gap (12) includes a fourth straight segment (135) connected to the second arc segment (131), and the included angle between the fourth straight segment (135) and the first straight segment (132) is β; Wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2<n<15； s is greater than or equal to 1 mm and less than or equal to 2 mm; β is greater than or equal to 45° and less than or equal to 55°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

6. The air duct assembly according to claim 3, characterized in that, When one end of the sealing structure (30) extends beyond the first end of the windshield member (20) and is bent to form a bent portion (31): The projection of the windshield member (20) on the reference plane forms the profile line of the windshield member (20), and the profile line of the windshield member (20) includes an axis profile line, and the axis profile line includes a first arc segment (21) near the mounting bracket (10), the center of the first arc segment (21) is the rotation center of the windshield member (20), and the radius of the first arc segment (21) is r1; The mounting bracket (10) includes a first frame (13) near the first end of the windshield member (20), and the first frame (13) is located at the groove (101); the projection of the first frame (13) on the reference plane forms the profile line of the first frame (13), and the profile line of the first frame (13) includes a second arc segment (131), a first straight segment (132) and a second straight segment (133) respectively connected to both ends of the second arc segment (131), and the first straight segment (132) and the second straight segment (133) respectively extend radially along both ends of the second arc segment (131); the second arc segment (131) is concentrically arranged with the first arc segment (21), and the radius of the second arc segment (131) is r2; The sealing structure (30) includes a body (32) that fits against the wind deflector (20) and a bent portion (31) that is bent relative to the body (32). The bent portion (31) fits against the first straight segment (132), and the angle between the bent portion (31) and the body (32) is γ. The distance between the edge of the sealing structure (30) away from the wind deflector (20) and the outer edge of the pivot profile of the wind deflector (20) is n. The thickness of the sealing structure (30) is q. Wherein, r1 is greater than or equal to 3 mm and less than or equal to 4 mm; r2 is greater than or equal to 8 mm and less than or equal to 10 mm; r2-r1+1<n<15； γ is greater than or equal to 100° and less than or equal to 130°; q is greater than or equal to 1 mm and less than or equal to 2 mm.

7. The air duct assembly according to any one of claims 4 to 6, characterized in that, The first air duct profile segment (1012) includes a fifth straight segment (10121) connected to the groove profile segment (1011). The extension line of the fifth straight segment (10121) is the reference line, and the first straight segment (132) is on the extension line of the fifth straight segment (10121).

8. The air duct assembly according to any one of claims 2 to 6, characterized in that, The wind deflector mechanism has a multi-layer structure; The sealing structure (30) is a rubber layer made of a rubber material; The wind deflector (20) is made of an ABS material; The wind deflector mechanism further includes a foam layer (40) made of a foam material; The rubber layer is disposed above the wind deflector (20), and the foam layer (40) is disposed below the wind deflector (20). The air duct (1) includes an upper air outlet duct and a lower air outlet duct. The wind deflector mechanism is disposed in the lower air outlet duct, and the wind deflector (20) rotates downward from the closed position to the open position.

9. An air conditioner, characterized in that, Including the air duct assembly according to any one of claims 1 to 8.

10. The air conditioner according to claim 9, characterized in that, The air conditioner further includes: A volute, the volute forming the air duct (1), and the air duct (1) includes an upper air outlet duct, a blower chamber, and a lower air outlet duct sequentially arranged along its height direction; A centrifugal blower (3), the centrifugal blower being disposed in the blower chamber; The wind deflector mechanism (4) is located in the lower air outlet duct; The air conditioner has an upper air outlet mode and an upper and lower air outlet mode. When the air conditioner is in the upper air outlet mode, the wind deflector (20) of the wind deflector mechanism (4) is in the closed position; when the air conditioner is in the upper and lower air outlet mode, the wind deflector (20) of the wind deflector mechanism (4) is in the open position.

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