Wall-mounted air conditioner indoor unit

Abstract

The invention discloses a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit comprises a machine shell, an air inlet and an air outlet, the air swinging assembly is arranged in the air duct and comprises an air plate seat; the multiple swing blades are arranged on the side, facing the air flue, of the air plate base at intervals; the driving mechanism is arranged on one side, deviating from the air duct, of the air plate seat and is arranged between two swinging blades; the connecting rod is arranged on the side, deviating from the air duct, of the air plate base, and the lower ends of the multiple swing blades penetrate through the air plate base and are connected with the driving mechanism through the connecting rod; the driving mechanism comprises a driving part; the driving crank comprises a driving shaft, a crank arm and a connecting shaft, the driving shaft and the connecting shaft are arranged at the two ends of the crank arm respectively, one end of the driving shaft is in driving connection with the driving part, the other end is in limiting fit with the wind plate seat, and the connecting shaft is connected with the connecting rod. The driving mechanism and the swing blades can be made of different materials, and the two end shafts and the middle arm of the driving crank perfectly solve the three core problems of driving direction adaptation, space compact layout and motion precision control.

Description

Technical Field

[0001] This invention relates to the field of wall-mounted air conditioning technology, and in particular to a wall-mounted air conditioning indoor unit. Background Technology

[0002] Air conditioners have become a commonly used indoor temperature control device. Air conditioners usually have a swing function, which can adjust the direction of airflow (i.e., the air outlet angle) from the air outlet of the indoor unit through the swing structure. In addition, users can choose to swing left and right and / or swing up and down according to the needs of the environment.

[0003] In existing technologies, the swing mechanism at the air outlet of air conditioners typically places the motor on one side of the casing, near the electrical control box. The motor drives a complex transmission mechanism and connecting rods to output torque, which ultimately drives the blades. The torque generated by the motor needs to pass through multiple transmission stages before reaching the blades. This not only results in a large number of parts and increased assembly difficulty during assembly, but also leads to poor controllability during transmission due to the gaps between the parts, causing significant deviations in the blade rotation angle, resulting in low transmission efficiency and a large space requirement. Another type of swing mechanism uses a motor to drive one blade, which then drives the other blades via connecting rods. This is prone to problems such as asynchronous blade rotation and jamming. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a wall-mounted air conditioner indoor unit, in which the drive mechanism and the swing blades can be made of different materials, and the "two-end shafts + middle arm" of the active crank perfectly solves the three core problems of drive direction adaptation, compact spatial layout, and motion precision control.

[0005] According to an embodiment of the present invention, a wall-mounted air conditioner indoor unit includes: a casing having an air inlet and an air outlet, and an air duct being provided inside the casing; a heat exchanger disposed within the air duct, located between the air inlet and the air outlet, for heat exchange with air entering from the air inlet; a fan disposed within the air duct and below the heat exchanger, wherein indoor air enters the air duct from the air inlet under the operation of the fan, undergoes heat exchange with the heat exchanger, and is then output from the air outlet; and a swing assembly disposed within the air duct and below the fan, wherein the heat exchange airflow is output in different directions under the swing of the swing assembly; the swing assembly includes: a fan plate base; and multiple... A plurality of oscillating blades are spaced apart on the side of the air deflector seat facing the air duct; a drive mechanism is located on the side of the air deflector seat away from the air duct, and is positioned between two of the oscillating blades; a connecting rod is located on the side of the air deflector seat away from the air duct, and the lower ends of the plurality of oscillating blades pass through the air deflector seat and are connected to the drive mechanism via the connecting rod; wherein, the drive mechanism includes: a drive member; a drive crank, the drive crank including a drive shaft, a crank arm and a connecting shaft, the drive shaft and the connecting shaft being respectively located at both ends of the crank arm, one end of the drive shaft being drivenly connected to the drive member and the other end being limitedly engaged with the air deflector seat, and the connecting shaft being connected to the connecting rod.

[0006] Therefore, by arranging the drive mechanism and the oscillating blade at intervals along the length of the wind vane seat, this application allows the drive mechanism and the oscillating blade to be made of different materials, thereby optimizing their functional performance. Through the "two-end shaft + middle arm" structure of the active crank, the rotational motion of the drive component is converted into the reciprocating motion of the connecting rod, which then drives the oscillating blade to swing, forming a clear and efficient force transmission path. The transmission method is simple, easy to manufacture and assemble, ensuring smooth power transmission to the oscillating blade with high transmission efficiency. This perfectly solves the three core problems of drive direction adaptation, compact space layout, and motion precision control, ultimately achieving efficient power conversion, maximum space utilization, and stable and reliable power transmission.

[0007] According to some embodiments of the present invention, one end of the drive shaft is formed with a shaft hole along the axis, and one end of the drive shaft of the drive member is inserted into the shaft hole and is limitedly engaged with the shaft hole.

[0008] According to some embodiments of the present invention, the shaft hole has a polygonal structure, and the outer contour of the drive shaft forms a polygonal structure that matches the shape of the shaft hole.

[0009] According to some embodiments of the present invention, the side of the wind vane seat facing the air duct is provided with a positioning protrusion and is spaced apart from the swing blade. The positioning protrusion protrudes from the surface of the wind vane seat, and the interior of the positioning protrusion forms a cavity that opens toward the drive shaft. The other end of the drive shaft is disposed in the cavity and is limited and engaged with the cavity.

[0010] According to some embodiments of the present invention, the side of the air plate seat opposite to the air duct is provided with a positioning rib, the positioning rib is provided on the outer side of the drive shaft, and the positioning rib is in a limiting fit with the drive shaft.

[0011] According to some embodiments of the present invention, the positioning rib is an annular positioning rib, the positioning rib is arranged around the outer side of the drive shaft, and the bottom of the positioning rib and the connecting rod form a gap space in the height direction.

[0012] According to some embodiments of the present invention, the oscillating blade includes: The blade body is located on the side of the wind vane seat facing the air duct; Driven crank, the blade body is connected to the driven crank, the driven crank is located on the side of the wind vane seat away from the air duct, the driven crank includes a driven shaft, a swing arm and a swing shaft, one end of the driven shaft is connected to the blade, the outer side of the driven shaft is connected to one end of the swing arm and the swing shaft is connected to the other end of the swing arm; The connecting rod has multiple openings along its length, and the swing shaft and the connecting shaft are rotatably connected to the multiple openings. The connecting rod is located on the side of the swing arm and the crank arm away from the wind vane seat.

[0013] According to some embodiments of the present invention, the pendulum leaf further includes: A swashplate seat is connected between the swashplate body and the driven crank. A limiting groove is formed on the side of the wind vane seat facing the air duct, and the swashplate seat is installed in the limiting groove.

[0014] According to some embodiments of the present invention, a limiting hole is formed within the limiting groove, the shape of the limiting hole matching the cross-section of the driven crank; and / or A limiting rib is formed in the limiting groove, and the limiting rib cooperates with the bottom support of the swing blade seat.

[0015] According to another embodiment of the present invention, a wall-mounted air conditioner indoor unit includes: a casing having an air inlet and an air outlet, and an air duct being provided inside the casing; a heat exchanger disposed within the air duct, located between the air inlet and the air outlet, for heat exchange with air entering from the air inlet; a fan disposed within the air duct and below the heat exchanger, wherein indoor air enters the air duct from the air inlet under the operation of the fan, undergoes heat exchange with the heat exchanger, and is then output from the air outlet; and a swing assembly disposed within the air duct and below the fan, wherein the heat exchange airflow is output in different directions under the swing of the swing assembly; the swing assembly includes: a fan plate base; and a plurality of swing blades. Multiple blades are spaced apart on the side of the air deflector seat facing the air duct; a drive mechanism is located on the side of the air deflector seat away from the air duct and is spaced apart from the blades along the length of the air deflector seat; a connecting rod is located on the side of the air deflector seat away from the air duct, and the lower ends of the multiple blades pass through the air deflector seat and are connected to the drive mechanism via the connecting rod; wherein, the drive mechanism includes: a drive member; an active crank, the active crank including an active shaft, a crank arm and a connecting shaft, the connecting shaft and the active shaft being integrally formed at both ends of the crank arm and respectively perpendicular to the crank arm, one end of the active shaft being drivenly connected to the drive member and the other end being limitedly engaged with the air deflector seat, and the connecting shaft being connected to the connecting rod.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention; Figure 2 This is a first-view structural schematic diagram of the swing assembly according to an embodiment of the present invention; Figure 3 This is a second-view structural schematic diagram of the swing assembly according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the swing assembly according to an embodiment of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of the swing assembly according to an embodiment of the present invention. Figure 2 ; Figure 6 This is an exploded view of the swing assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the swing assembly without a drive mechanism according to an embodiment of the present invention; Figure 8 This is a partial structural schematic diagram of the swing assembly according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the wind vane seat and the swing blade according to an embodiment of the present invention; Figure 10 This is a cross-sectional schematic diagram of the wind vane seat and the swing blade according to an embodiment of the present invention.

[0018] Figure label: 100. Wall-mounted air conditioner indoor unit; 1. Casing; 11. Air inlet; 12. Air outlet; 13. Air duct; 2. Swing assembly; 20. Air vane seat; 21. Positioning protrusion; 22. Cavity; 23. Positioning rib; 24. Limiting groove; 25. Limiting hole; 26. Limiting rib; 30. Swing blade; 31. Swing blade body; 32. Driven crank; 321. Driven shaft; 322. Swing arm; 323. Swing shaft; 33. Swing blade seat; 40. Drive mechanism; 41. Drive component; 411. Drive shaft; 42. Drive crank; 421. Drive shaft; 422. Crank arm; 423. Connecting shaft; 424. Shaft hole; 43. Hexagonal bushing; 50. Connecting rod; 60. Clearance space. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0020] The following is for reference. Figures 1-10 A wall-mounted air conditioner indoor unit according to an embodiment of the present invention is described. The wall-mounted air conditioner includes a wall-mounted air conditioner indoor unit, which is installed indoors and used for heat exchange with the indoor environment.

[0021] like Figures 1-10 As shown, the wall-mounted air conditioner indoor unit 100 includes: a casing 1, a heat exchanger, a fan, and an air swing assembly 2. The casing 1 is installed indoors, and the casing 1 forms the overall appearance of the wall-mounted air conditioner indoor unit 100.

[0022] refer to Figure 1 As shown, the housing 1 is generally rectangular in shape. The housing 1 has a top end and a bottom end, which are opposite ends in the height direction (vertical direction) of the housing 1. The left side and right side of the housing 1 are opposite sides in the length direction (horizontal direction) of the housing 1, and the front side and rear side of the housing 1 are opposite sides in the thickness direction (front-back direction) of the housing 1.

[0023] The housing 1 is located at the top of the room or in the upper space of the room. The front of the housing 1 faces the user and the rear of the housing 1 faces the wall, making it suitable for connection with the wall.

[0024] It should be noted that the directions described in the text are based on the direction the user faces when facing the indoor unit of the air conditioner. Specifically, the side of the indoor unit facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction the user faces when facing the indoor unit.

[0025] refer to Figure 1 The housing 1 has an air inlet 11 and an air outlet 12, and an air duct 13 is provided inside the housing 1. The air duct 13 is used to house and fix various components in the indoor unit of the air conditioner, which can prevent external objects from colliding with the various components inside the housing 1, thereby improving the reliability of the indoor unit of the air conditioner during transportation or installation.

[0026] Specifically, the housing 1 may include an outer cover and a front panel, the outer cover having an air inlet 11 and an air outlet 12. The outer cover is generally in the shape of a cuboid frame, with a frame opening on the front side of the outer cover, and the front panel is located on the front side of the outer cover.

[0027] The outer casing has an air inlet 11. The air inlet 11 is connected to the air duct 13. The air inlet 11 serves as the inlet for external air to flow into the casing 1, allowing indoor air to enter the air duct 13 through the air inlet 11.

[0028] The outer casing has an air outlet 12. The air outlet 12 is connected to the air duct 13. The air outlet 12 serves as the outlet for the heat exchange airflow inside the casing 1, allowing the airflow inside the air duct 13 to flow out through the air outlet 12.

[0029] The air inlet 11 can be located at the top of the outer casing. The air outlet 12 can be located at the bottom of the outer casing and near the front side, i.e., the air outlet 12 is located at the bottom front side of the outer casing. In this embodiment, when the wall-mounted air conditioner indoor unit 100 is working, the wall-mounted air conditioner indoor unit 100 takes in air from the top and exits air to the front, which is convenient for installation.

[0030] The air outlet 12 can be elongated and can extend along the length of the casing 1, which improves the aesthetics of the wall-mounted air conditioner indoor unit 100.

[0031] In some embodiments of this application, the housing 1 may also include a base, which forms the rear side of the wall-mounted air conditioner indoor unit 100 and is adapted to be mounted on a wall.

[0032] The outer cover has an open rear side, is placed over the front side of the base and connected to the base, and defines an air duct 13 between the outer cover and the base. The outer cover, the base and the front panel together form the housing 1.

[0033] In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include an air guide plate. The air guide plate is rotatably connected to the housing 1, and an air outlet 12 is provided on the air guide plate. The air guide plate opens or closes the air outlet 12. When the air outlet 12 is open, it guides the heat exchange airflow. When the air outlet 12 is closed, it prevents dust, insects, etc. from entering the interior of the housing 1.

[0034] In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include a heat exchanger. The heat exchanger extends along the length of the casing 1 and is disposed within the air duct 13 for heat exchange with the airflow within the casing 1.

[0035] The heat exchanger is located between the air inlet 11 and the air outlet 12 to exchange heat with the air entering from the air inlet 11, and then exhaust it to the room from the air outlet 12.

[0036] In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include a fan. The fan is disposed in the air duct 13, and the axial direction of the fan extends along the length direction of the casing 1. It is used to drive indoor air outside the casing 1 to enter the air duct 13 inside the casing 1 through the air inlet 11. The fan drives the air in the air duct 13 to flow along the air inlet 11 toward the air outlet 12.

[0037] The fan is located below the heat exchanger. The heat exchanger can be located inside the air inlet 11. The fan can be located on the side of the heat exchanger away from the air inlet 11. That is, in the airflow direction within the casing 1, the fan is downstream of the heat exchanger.

[0038] When the indoor unit 100 of the wall-mounted air conditioner is running, indoor air enters the casing 1 from the air inlet 11 under the operation of the fan. The indoor air in the air duct 13 flows through the heat exchanger for heat exchange. The heat-exchanged airflow is discharged to the outside of the room from the air outlet 12, thereby enabling the air conditioner to cool and heat, play a role in regulating the indoor temperature, and achieve a comfortable temperature for the user.

[0039] In some embodiments of this application, reference is made to Figure 1 As shown, the wall-mounted air conditioner indoor unit 100 may include a swing assembly 2. The swing assembly 2 is disposed in the air duct 13 and located below the fan. The heat exchange airflow is output in different directions by the swing of the swing assembly 2.

[0040] Specifically, the fan generates high-pressure airflow and delivers it downwards. The swing assembly 2 is located below the fan (i.e., on the downstream path of the airflow) and can directly receive the "concentrated airflow" output by the fan. The airflow direction is directly guided by the swing assembly 2, which can reduce pressure loss and ensure that the heat exchange airflow can be delivered to the target area at a higher speed.

[0041] The swing assembly 2 is built into the air duct 13. The wall of the air duct 13 can wrap the airflow, preventing the airflow from directly colliding with the outside air and causing whistling. At the same time, the airflow speed below the fan is stable, and the contact between the swing blade 30 and the airflow is smoother when the swing blade 30 swings, reducing the high-frequency noise generated by the swing blade 30 cutting the airflow.

[0042] In some embodiments of this application, the swing assembly 2 includes: a wind vane base 20, a plurality of swing blades 30, a drive mechanism 40, and a connecting rod 50. The plurality of swing blades 30 are spaced apart on the side of the wind vane base 20 facing the air duct 13. The drive mechanism 40 is located on the side of the wind vane base 20 away from the air duct 13, and is positioned between two of the swing blades 30. The connecting rod 50 is located on the side of the wind vane base 20 away from the air duct 13, and the lower ends of the plurality of swing blades 30 pass through the wind vane base 20 and are connected to the drive mechanism 40 via the connecting rod 50.

[0043] refer to Figures 2-10 As shown, the side of the fan base 20 facing the air duct 13 is only provided with spaced-apart blades 30, without any driving components. This design ensures that the heat exchange airflow in the air duct 13 only contacts the blades 30, and will not generate eddies or airflow attenuation due to obstruction by driving components. At the same time, it avoids dust and moisture in the airflow from adhering to the drive mechanism 40 and affecting its operating accuracy.

[0044] The drive mechanism 40 and connecting rod 50 are located on the side of the air deflector seat 20 away from the air duct 13, with the drive mechanism 40 positioned between the two oscillating blades 30. This layout makes full use of the unused space on the leeward side, eliminating the need to reserve an installation location within the air duct 13. Viewed from the air outlet 12, the connecting rod 50 and drive mechanism 40 are concealed behind the air deflector seat 20, reducing their impact on the airflow and improving aesthetics.

[0045] Furthermore, the drive mechanism 40 is located between the two swing blades 30, and the linkage between the two is achieved by a rigid connecting rod 50.

[0046] Since the lower ends of multiple blades 30 pass through the wind vane seat 20 and are connected to the connecting rod 50, and the drive mechanism 40 is drivenly connected to the connecting rod 50. By positioning the drive mechanism 40 between two of the blades 30, the drive mechanism 40 can be axially limited by the lower ends of the blades 30 on both sides of the drive mechanism 40 (corresponding to the swing shaft 323 described below).

[0047] Considering that the functions and challenges of the drive mechanism 40 and the pendulum 30 are completely different, using different materials for the drive mechanism 40 and the pendulum 30 can optimize their functions. If the same material is used (such as both metal or both plastic), one side will have excessive performance and the other insufficient performance. For example, the metal pendulum 30 will be too heavy, increasing the motor load, while the plastic motor is not heat-resistant and is easily damaged. Therefore, differentiated material selection is the inevitable choice to achieve optimal function.

[0048] In some embodiments, the drive mechanism 40, serving as the power core, can be made of metal or high-temperature resistant plastic. The use of heat-resistant materials prevents overheating damage to the drive component 41. During motor operation, the internal coils of the drive component 41 generate heat; if the motor housing / internal support is made of ordinary plastic, deformation and softening can easily occur, leading to misalignment of internal gears / coils. Using high-temperature resistant materials (such as aluminum alloy / zinc alloy for the motor housing and PBT+glass fiber for the internal support) allows for long-term resistance to heat generation, preventing structural failure. The use of high-strength materials ensures effective torque transmission. The motor output shaft needs to drive multiple vanes 30 via connecting rod 50. By using metal materials, their torsional strength and surface hardness are far superior to plastics, allowing for long-term torque transmission without damage. Simultaneously, the good wear resistance of the metal shaft prevents increased transmission clearance.

[0049] In some embodiments, the oscillating blade 30, as an air guiding component, can be made of lightweight plastic / composite materials. If the oscillating blade 30 is made of metal (such as aluminum), the weight of a single oscillating blade 30 may be several times that of plastic, and the total weight of multiple oscillating blades 30 will significantly increase the driving load of the drive mechanism 40, and may also shorten the motor life due to long-term overload. However, the oscillating blade 30 is commonly made of lightweight plastic (such as PP, ABS), which is lightweight and has low inertia, greatly reducing the motor load and enabling "low-power motor driving multiple oscillating blades 30", while reducing the impact during start-up and shutdown (avoiding the connection rod 50 from breaking due to excessive inertia). In addition, when the oscillating blade 30 swings in the air duct 13, its surface roughness and shape adaptability will affect the airflow resistance: if the metal oscillating blade 30 is not processed with sufficient precision, it will cut the airflow and form vortices, resulting in a decrease in air delivery efficiency; while the plastic oscillating blade 30 can be injection molded in one piece, with a smooth surface, and can be designed with a "streamlined cross-section", with a low resistance coefficient when the airflow passes through, ensuring that the heat exchange airflow is output further and more evenly.

[0050] In addition, when the oscillating blade 30 swings, it will slightly rub against the mounting position of the air deflector seat 20 and the hinge point of the connecting rod 50. If the oscillating blade 30 is made of metal, it will produce more noticeable noise. However, the plastic oscillating blade 30 (such as PP or soft PVC) has low hardness and a low coefficient of friction. When it swings, the noise is close to the ambient sound. At the same time, even if the plastic oscillating blade 30 slightly collides with the wall of the air duct 13, it will not produce a harsh sound, greatly improving the quiet experience.

[0051] Furthermore, the lower ends of multiple oscillating blades 30 pass through the limiting holes 25 of the wind vane seat 20 and are hinged to the connecting rod 50 on the leeward side. With this configuration, on the one hand, the power output from the drive mechanism 40 acts directly on the hinge points of all oscillating blades 30 through the connecting rod 50. The rotational power of all oscillating blades 30 comes from the "direct pull" of the same connecting rod 50. Only the motion accuracy of the connecting rod 50 itself needs to be controlled to ensure that the rotation angle of all oscillating blades 30 is consistent. On the other hand, when the oscillating blades 30 are loaded due to airflow resistance or dust accumulation, the connecting rod 50 will evenly distribute the load to the hinge points of all oscillating blades 30 before transmitting it to the drive mechanism 40. For example, if one oscillating blade 30 is stuck, the normal oscillation of the other oscillating blades 30 will share some of the resistance through the connecting rod 50, preventing the load from concentrating at a single point. Simultaneously, the drive mechanism 40 only needs to drive the connecting rod 50 for overall movement, resulting in a more stable output torque (without instantaneous overload peaks) and extending the service life of the drive mechanism 40. In addition, all the blades 30 are fixed to the connecting rod 50 by hinges, the parts are highly standardized, and during assembly, only the blades 30 and the connecting rod 50 need to be hinged to each other, which is efficient and suitable for mass production.

[0052] In some embodiments of this application, the drive mechanism 40 includes a drive member 41 and a drive crank 42. The drive crank 42 includes a drive shaft 421, a crank arm 422, and a connecting shaft 423. The drive shaft 421 and the connecting shaft 423 are respectively located at both ends of the crank arm 422. One end of the drive shaft 421 is drivenly connected to the drive member 41, and the other end is limitedly engaged with the wind vane seat 20. The connecting shaft 423 is connected to the connecting rod 50.

[0053] refer to Figures 3-8 As shown, the lower end of the drive shaft 421 is directly driven and connected to the drive shaft 411 of the drive member 41, and the connecting shaft 423 is connected to the connecting rod 50. When the drive member 41 drives the drive shaft 421 to rotate, the crank arm 422 will swing around the drive shaft 421 in a circular motion; at the same time, the connecting shaft 423 is hinged to the connecting rod 50, and the circular swing of the crank arm 422 will "push / pull" the connecting rod 50 through the connecting shaft 423, converting the "arc trajectory" of the circular motion into the "linear reciprocating trajectory" of the connecting rod 50. Compared to directly driving the connecting rod 50 with a motor, which requires additional complex conversion structures such as gears and cams, the active crank 42 can directly complete motion conversion through an "integrated shaft-arm-shaft" structure, achieving a power transmission efficiency of over 95% (without frictional losses from gear meshing or clearance losses from cam transmission). Furthermore, the conversion stroke is stable (the reciprocating distance of the connecting rod 50 is determined solely by the length of the crank arm 422, with an error ≤ ±0.1mm), ensuring that the swing angle of all the blades 30 is consistent and avoiding blade jamming and uneven airflow caused by inaccurate motion conversion.

[0054] In addition, since the active crank 42 is located between the two oscillating blades 30, and the connecting rod 50 serves as the transmission component and position setting between the active crank 42 and the oscillating blades 30, it can jointly play the role of axially limiting the active crank 42.

[0055] Since both the drive mechanism 40 and the connecting rod 50 are located on the back side of the air deflector seat 20, this area is usually narrow. The "compact structure" of the drive crank 42 allows for the effective reciprocating stroke of the connecting rod 50 within a limited space. The drive shaft 421, crank arm 422, and connecting shaft 423 of the drive crank 42 are arranged in an "L-shape" or "straight-end distribution" (e.g., the drive shaft 421 is perpendicular to the air deflector seat 20, the crank arm 422 is parallel to the air deflector seat 20, and the connecting shaft 423 is perpendicular to the crank arm 422). They can be completely embedded in the "flat space" on the back side of the air deflector seat 20 without the need for additional "misalignment space" between the drive component 41 and the connecting rod 50 (if the drive shaft 411 of the motor is directly used to connect the connecting rod 50, the motor shaft and the connecting rod 50 need to be at a certain angle, which will occupy more longitudinal space). The crank arm 422 can be adjusted to flexibly adapt to the swing angle requirements of different blades 30 (e.g., the greater the stroke, the greater the swing angle of the blades 30, and the wider the air delivery range), without increasing the size of the motor. Compared with the solution of amplifying the stroke through a gear set, the active crank 42 structure is reduced in size by more than 50%, perfectly meeting the design requirements of "lightweight and thin" wall-mounted air conditioners.

[0056] The upper end of the drive shaft 421 is inserted into the preset limiting structure on the back side of the fan plate seat 20, forming a double support structure of "lower end motor drive, upper end fan plate seat 20 limiting". This allows the drive shaft 421 to rotate only around its own axis and prevents radial runout and axial movement (such as left-right swaying or up-down movement). If the drive shaft 421 is only connected to the motor at the lower end (without the upper end limiting), when the motor drives the drive shaft 421 to rotate, the centrifugal force of the crank arm 422 will cause the drive shaft 421 to oscillate radially (especially at high speeds), which will cause the connecting rod 50 to "offset", resulting in inconsistent swing angles of the oscillating blade 30. The "double support" structure can control the radial runout of the drive shaft 421, ensuring the stability of the movement trajectory of the crank arm 422, and preventing the connecting rod 50 from offsetting during reciprocating motion. This significantly improves the rotational accuracy of the oscillating blade 30, while also avoiding wear on the motor shaft and loosening of the hinge point of the connecting rod 50 due to the offset of the drive shaft 421.

[0057] In addition, since the motor generates slight vibrations during operation, the limiting fit between the drive shaft 421 and the fan plate seat 20 can absorb some radial vibrations; the hinge (allowing free rotation) between the connecting shaft 423 and the connecting rod 50 can prevent motor vibrations from being directly transmitted to the connecting rod 50 (if the motor and the connecting rod 50 are rigidly connected, the vibration will be transmitted to the oscillating blade 30 through the connecting rod 50, resulting in increased friction noise between the oscillating blade 30 and the fan plate seat 20). The buffering effect of the drive crank 42 can reduce the vibration transmission rate by 30%-40%, making the reciprocating motion of the connecting rod 50 smoother, and the friction noise of the oscillating blade 30 is close to the ambient sound. At the same time, it reduces the transmission of motor vibrations to the fan plate seat 20 and the casing 1, avoids low-frequency noise generated by whole-unit resonance, and greatly improves the user's quiet experience (such as no obvious noise interference when the bedroom air conditioner is running).

[0058] Therefore, the active crank 42, as the "core of power conversion and transmission" between the drive mechanism 40 and the connecting rod 50, is an integrated component that integrates "motion conversion, space adaptation, precision control, and quiet buffering." Within the compact space on the leeward side, it efficiently realizes the entire power transmission chain of "motor rotation → connecting rod 50 reciprocating → oscillating blade 30," while ensuring precision, stability, and quietness, ultimately meeting the core requirements of wall-mounted air conditioners for "lightweight, highly reliable, and low-noise."

[0059] Therefore, by arranging the drive mechanism 40 and the oscillating blade 30 at intervals along the length of the wind vane seat 20, this application allows the drive mechanism 40 and the oscillating blade 30 to be made of different materials, thereby ensuring that their functions and performance are optimized. Through the "two-end shaft + middle arm" structure of the active crank 42, the rotational motion of the drive component 41 is converted into the reciprocating motion of the connecting rod 50, and then the oscillating blade 30 is driven to swing through the connecting rod 50, forming a clear and efficient force transmission path. The transmission method is simple, easy to manufacture and assemble, and ensures that the power is smoothly transmitted to the oscillating blade 30 with high transmission efficiency. It perfectly solves the three core problems of "drive direction adaptation, compact space layout, and motion precision control", and ultimately achieves "efficient power conversion, maximum space utilization, and stable and reliable operation" in power transmission.

[0060] In some embodiments of this application, one end of the drive shaft 421 is formed with a shaft hole 424 along the axis, and one end of the drive shaft 411 of the drive member 41 is inserted into the shaft hole 424 and is limited and engaged with the shaft hole 424.

[0061] refer to Figures 6-8As shown, the limiting fit between the shaft hole 424 and the drive shaft 411 allows for a more stable transmission of power from the drive component 41 to the drive shaft 421, reducing swaying and offset during power transmission and ensuring the stable operation of the entire oscillating vane 30 drive system. Furthermore, compared to other connection methods, this effectively saves space, making the structure more compact. The shaft hole 424 also restricts the radial movement of the drive shaft 411, ensuring that it can only rotate around its axis, which helps maintain the relative positional relationship between the drive component 41 and the drive shaft 421, guaranteeing rotational accuracy.

[0062] In some embodiments of this application, the shaft hole 424 has a polygonal structure, and the outer contour of the drive shaft 411 forms a polygonal structure that matches the shape of the shaft hole 424.

[0063] refer to Figures 6-8 As shown, the connection between the circular shaft and the shaft hole 424 relies on key connections and interference fits to transmit torque. If the clearance is too large or the friction is insufficient (such as wear after long-term use), a slippage phenomenon will occur where the drive shaft 411 spins freely and the drive shaft 421 does not rotate. In contrast, the polygonal structure (such as a regular hexagon) of the shaft and hole is rigidly fitted through an "edge-plane" connection, allowing torque to be transmitted directly through the edges without relative sliding space. This achieves 100% torque transmission, ensuring that every rotation of the motor is precisely converted into rotation of the drive shaft 421. Moreover, circumferential positioning and torque transmission can be completed simply by matching the shapes of the shaft and hole. The connection structure only includes two parts: "drive shaft 411 + drive shaft 421," which not only improves assembly efficiency but also achieves high-precision radial positioning. This ensures that the drive shaft 421 always rotates around a fixed axis, the connecting rod 50 reciprocates smoothly, and the oscillating blade 30 rotates more stably. It also reduces wear on the drive shaft 421 and the limiting hole 25 of the fan seat 20 (no eccentric impact), extending the service life of the components.

[0064] In some embodiments of this application, the side of the wind vane 20 facing the air duct 13 is provided with a positioning protrusion 21, which is spaced apart from the swing blade 30. The positioning protrusion 21 protrudes from the surface of the wind vane 20, and a cavity 22 is formed inside the positioning protrusion 21 that is open to the drive shaft 421. The other end of the drive shaft 421 is located in the cavity 22 and is limited to cooperate with the cavity 22.

[0065] refer to Figures 3-10As shown, one end of the drive shaft 421 engages with the drive shaft 411 of the drive member 41, and the other end is inserted into the cavity 22 of the positioning protrusion 21. The positioning protrusion 21 can prevent the drive shaft 421 from moving along the axial direction (such as the drive shaft 421 being pushed forward or retracted backward due to vibration when the drive member 41 is driven), forming a bidirectional axial positioning. At the same time, the limiting engagement between the inner wall of the cavity 22 and the outer wall of the drive shaft 421 can form a radial constraint on the side end of the air duct 13 of the drive shaft 421, preventing the drive shaft 421 from being supported by only one point of the drive shaft 411. This "bidirectional support + radial assistance" structure can ensure that the drive shaft 421 always rotates around a fixed axis, thereby avoiding the problems of poor synchronization and jamming of the swing blade 30 caused by the offset of the connecting rod 50, and effectively improving the swing angle accuracy of the swing blade 30.

[0066] Furthermore, since the distance between the drive shaft 421 of the drive mechanism 40 and the lower end of the blade 30 is relatively large, opening a hole in the wind vane seat 20 similar to the blade 30 rotating and being mounted in the positioning hole would increase the distance between the blades 30 on both sides of the drive mechanism 40, resulting in an uncompacted space. Therefore, by setting the positioning protrusion 21, this situation can be avoided, greatly reducing the space occupied.

[0067] In some embodiments of this application, the side of the air deflector 20 away from the air duct 13 is provided with a positioning rib 23. The positioning rib 23 is provided on the outer side of the drive shaft 421, and the positioning rib 23 is in a limiting fit with the drive shaft 421.

[0068] refer to Figure 4 , Figure 8 and Figure 10 As shown, during operation, the drive shaft 421 is prone to axial displacement along its axis due to vibration of the drive component 41 and centrifugal force of the crank arm 422. The locating rib 23 axially limits the drive shaft 421 by fitting it tightly against the side wall (either in close contact or with a pre-reserved compensation gap), forming a "rigid barrier" that restricts the axial displacement of the drive shaft 421. The locating rib 23 is integrally formed with the fan plate seat 20. Compared to traditional axial limiting methods that rely on retaining rings and other accessories, this application requires no additional parts, simplifying installation.

[0069] In some embodiments of this application, the positioning rib 23 is an annular positioning rib 23, which is arranged around the outer side of the drive shaft 421. Furthermore, a gap 60 is formed between the bottom of the positioning rib 23 and the connecting rod 50 in the height direction.

[0070] Specifically, the inner hole of the annular positioning rib 23 forms a clearance fit with the outer wall of the drive shaft 421, and wraps around the outside of the drive shaft 421 360°. This can evenly offset the radial force (such as left and right offset, up and down sway) generated by the centrifugal force of the crank arm 422 and the vibration of the motor on the drive shaft 421, and avoid the "radial constraint blind zone caused by uneven local force" of the positioning rib 23 on one side.

[0071] The clearance 60 between the bottom of the annular positioning rib 23 and the connecting rod 50 in the height direction is crucial to ensuring the free reciprocating motion of the connecting rod 50. When the connecting rod 50 reciprocates with the crank arm 422 driven by the drive shaft 421, its trajectory forms a certain "height variation range" (e.g., the height decreases when the connecting rod 50 approaches the drive shaft 421 and increases when it moves away). The clearance 60 between the bottom of the annular positioning rib 23 and the connecting rod 50 ensures that the connecting rod 50 will not rub or collide with the bottom of the positioning rib 23 even at its maximum stroke position.

[0072] In some embodiments of this application, the oscillating blade 30 includes an oscillating blade body 31 and a driven crank 32. The oscillating blade body 31 is located on the side of the wind vane seat 20 facing the air duct 13, and the oscillating blade body 31 is connected to the driven crank 32, which is located on the side of the wind vane seat 20 away from the air duct 13.

[0073] The driven crank 32 includes a driven shaft 321, a rocker arm 322, and a rocker shaft 323. One end of the driven shaft 321 is connected to the rocker blade 30, the outer side of the driven shaft 321 is connected to one end of the rocker arm 322, and the rocker shaft 323 is connected to the other end of the rocker arm 322.

[0074] refer to Figure 3 , Figure 5 and Figure 8 As shown, the connecting rod 50 on the leeward side is hinged to the swing shaft 323 of the driven crank 32. When the connecting rod 50 reciprocates, it pushes / pulls the swing arm 322 to rotate around the axis of the driven shaft 321 via the swing shaft 323. One end of the driven shaft 321 is rigidly connected to the swing blade body 31 (e.g., injection molded as a single piece). The rotation of the swing arm 322 directly drives the driven shaft 321 and the swing blade body 31 to rotate synchronously, ultimately realizing the swing of the swing blade body 31 within the air duct 13. The entire transmission path is "connecting rod 50 → swing shaft 323 → swing arm 322 → driven shaft 321 → swing blade body 31", with no redundant transmission links and power loss ≤5%.

[0075] Moreover, the driven shaft 321, swing arm 322, and swing shaft 323 of the driven crank 32 are rigidly connected, which can evenly distribute the power transmitted by the connecting rod 50 to the swing blade body 31. At the same time, compared with designing a short shaft directly on the swing blade body 31, the driven shaft 321 has a longer fit length with the hole of the wind vane seat 20, which can better withstand the offset force of the swing blade 30 caused by wind resistance and avoid the swing blade body 31 from bending and deforming due to excessive local stress.

[0076] In some embodiments, the blade 30 is integrally formed to ensure a rigid connection between the driven crank 32 and the blade 30.

[0077] In some embodiments of this application, the connecting rod 50 is provided with a plurality of openings along its length, and the swing shaft 323 and the connecting shaft 423 are rotatably connected to the plurality of openings.

[0078] Specifically, the connecting rod 50 is connected to the swing shaft 323 of all the swing blades 30 and the connecting shaft 423 of the active crank 42 through multiple openings to form a "one-bar linkage" transmission system, so that the power of all the swing blades 30 comes from the same connecting rod 50. Furthermore, through the equidistant design of the opening positions (such as the consistent spacing between adjacent openings), it can be ensured that the swing shaft 323 of each swing blade 30 is subjected to uniform force and the swing angle error is extremely small.

[0079] Furthermore, the connecting rod 50 is located on the side of the swing arm 322 and crank arm 422 away from the wind deflector seat 20. When the swing arm 322 and crank arm 422 swing around their respective axes (driven shaft 321, driving shaft 421), they will form a certain rotational space on the surface of the wind deflector seat 20. If the connecting rod 50 is located between the wind deflector seat 20 and the swing arm 322 / crank arm 422, it may be blocked by the protrusion of the wind deflector seat 20 or the rotational trajectory of the swing arm 322 / crank arm 422; however, since the connecting rod 50 is located on the side of the swing arm 322 and crank arm 422 away from the wind deflector seat 20, the connecting rod 50 is completely outside the rotational radius of the swing arm 322 / crank arm 422 and maintains a certain gap with the wind deflector seat 20. No matter where the swing arm 322 / crank arm 422 swings, it will not collide with the connecting rod 50.

[0080] In some embodiments of this application, the oscillating blade 30 further includes an oscillating blade seat 33, which is connected between the oscillating blade body 31 and the driven crank 32. A limiting groove 24 is formed on the side of the wind vane seat 20 facing the air duct 13, and the oscillating blade seat 33 is installed in the limiting groove 24.

[0081] The oscillating blade seat 33 serves as an intermediate transitional connector between the oscillating blade body 31 and the driven crank 32, rigidly integrating the two into one unit, dispersing concentrated stress during power transmission, and preventing local structural damage. If the two are directly connected (such as the driven shaft 321 being directly injection molded from the oscillating blade body 31), the connection is prone to breakage due to the "stiffness difference between the air guide and the transmission part" during power transmission. However, the oscillating blade seat 33 can increase the stress strength at the connection, enhancing the overall deformation resistance of the oscillating blade 30.

[0082] The shape of the oscillating blade seat 33 perfectly matches the inner contour of the limiting groove 24, and the oscillating blade seat 33 is installed after the limiting groove 24. On the one hand, the oscillating blade seat 33 can block the limiting hole 25 (limiting groove 24) of the wind deflector seat 20, and at the same time, the oscillating blade seat 33 is partially hidden in the limiting groove 24 of the wind deflector seat 20 to reduce wind resistance; on the other hand, the oscillating blade seat 33 can only rotate around its own axis and cannot produce radial offset (such as left and right swaying or up and down movement). By forming a larger range of radial constraints through the full circumference fit of the oscillating blade seat 33, the radial runout of the oscillating blade 30 can be limited.

[0083] In some embodiments of this application, a limiting hole 25 is formed in the limiting groove 24, and the shape of the limiting hole 25 matches the cross-section of the driven crank 32.

[0084] refer to Figure 9 As shown, the driven shaft 321 of the driven crank 32 and its crank arm 422 have a cross-sectional shape forming a straight line, and the corresponding limiting hole 25 is also straight, matching it. When the blade 30 is installed on the wind deflector seat 20, the driven crank 32 passes through the straight limiting hole 25 to the side of the wind deflector seat 20 away from the air duct 13, and then rotates relative to the wind deflector seat 20 by a certain angle (such as 90 degrees), so that the driven crank 32 and the limiting hole 25 are misaligned, preventing the driven crank 32 from falling out of the limiting hole 25. In addition, the connecting rod 50 is connected to the swing shaft 323 of the driven crank 32, and the connecting rod 50 is connected to two adjacent swing shafts 323, which can prevent the entire blade 30 from falling.

[0085] In some embodiments of this application, a limiting rib 26 is formed in the limiting groove 24, and the limiting rib 26 cooperates with the bottom support of the swing blade seat 33.

[0086] refer to Figure 5 and Figure 10 As shown, by setting the limiting rib 26 in the limiting groove 24, the blade seat 33 can form an "axial rigid support". On the one hand, it can prevent the wind plate seat 20 and the blade seat 33 from touching, reducing resistance and noise; on the other hand, the limiting rib 26 and the bottom of the blade seat 33 form a multi-point support, which can evenly distribute the axial force to the limiting rib 26 and the body of the wind plate seat 20.

[0087] According to another embodiment of the present invention, a wall-mounted air conditioner indoor unit 100 includes: a housing 1 having an air inlet 11 and an air outlet 12, and an air duct 13 disposed within the housing 1; a heat exchanger disposed within the air duct 13, located between the air inlet 11 and the air outlet 12, for heat exchange with air entering from the air inlet 11; a fan disposed within the air duct 13 and below the heat exchanger, wherein indoor air enters the air duct 13 from the air inlet 11 under the operation of the fan, undergoes heat exchange with the heat exchanger, and is then output from the air outlet 12; and a swing assembly 2 disposed within the air duct 13 and below the fan, wherein the heat exchange airflow is output in different directions by the swing of the swing assembly 2. The swing assembly 2 includes: a fan plate base 20; and a plurality of swing blades 30 spaced apart on the side of the fan plate base 20 facing the air duct 13. A drive mechanism 40 is located on the side of the wind deflector base 20 away from the air duct 13 and is spaced apart from the oscillating blades 30 along the length of the wind deflector base 20. A connecting rod 50 is located on the side of the wind deflector base 20 away from the air duct 13, and the lower ends of the multiple oscillating blades 30 pass through the wind deflector base 20 and are connected to the drive mechanism 40 via the connecting rod 50.

[0088] The drive mechanism 40 includes: a drive component 41; and an active crank 42, which includes an active shaft 421, a crank arm 422, and a connecting shaft 423. The connecting shaft 423 and the active shaft 421 are integrally formed at both ends of the crank arm 422 and are perpendicular to the crank arm 422, respectively. One end of the active shaft 421 is driven and connected to the drive component 41, and the other end is limited and engaged with the wind vane seat 20. The connecting shaft 423 is connected to the connecting rod 50.

[0089] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0090] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0091] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner indoor unit, comprising: The housing has an air inlet and an air outlet, and an air duct is provided inside the housing; A heat exchanger is disposed in the air duct and located between the air inlet and the air outlet to exchange heat with the air entering from the air inlet. A fan is installed in the air duct and located below the heat exchanger. Indoor air enters the air duct from the air inlet under the operation of the fan, and after heat exchange by the heat exchanger, it is output from the air outlet. A swing assembly is disposed in the air duct and located below the fan. The heat exchange airflow is output in different directions by the swing of the swing assembly. Its features are, The swing assembly includes: Wind board seat; Multiple blades, the multiple blades being spaced apart on the side of the air deflector facing the air duct; A drive mechanism is provided on the side of the wind vane seat away from the air duct, and the drive mechanism is located between two of the swing blades; A connecting rod is provided on the side of the wind vane seat away from the air duct, and the lower ends of the plurality of blades pass through the wind vane seat and are connected to the drive mechanism through the connecting rod; The drive mechanism includes: Drive components; The active crank includes an active shaft, a crank arm, and a connecting shaft. The active shaft and the connecting shaft are respectively located at both ends of the crank arm. One end of the active shaft is driven and connected to the driving component, and the other end is limited and engaged with the wind vane seat. The connecting shaft is connected to the connecting rod.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, One end of the drive shaft has a shaft hole formed inward along the axis, and one end of the drive shaft of the drive member is inserted into the shaft hole and is limited and matched with the shaft hole.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The shaft hole has a polygonal structure, and the outer contour of the drive shaft forms a polygonal structure that matches the shape of the shaft hole.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The wind vane seat has a positioning protrusion on the side facing the air duct and is spaced apart from the swing blade. The positioning protrusion protrudes from the surface of the wind vane seat, and the interior of the positioning protrusion forms a cavity that opens toward the drive shaft. The other end of the drive shaft is located in the cavity and is limited and matched with the cavity.

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The side of the air deflector seat opposite to the air duct is provided with a positioning rib. The positioning rib is located on the outer side of the drive shaft and is in a limiting fit with the drive shaft.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The positioning rib is an annular positioning rib, which is arranged around the outer side of the drive shaft, and the bottom of the positioning rib and the connecting rod form a gap space in the height direction.

7. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The oscillating blades include: The blade body is located on the side of the wind vane seat facing the air duct; Driven crank, the blade body is connected to the driven crank, the driven crank is located on the side of the wind vane seat away from the air duct, the driven crank includes a driven shaft, a swing arm and a swing shaft, one end of the driven shaft is connected to the blade, the outer side of the driven shaft is connected to one end of the swing arm and the swing shaft is connected to the other end of the swing arm; The connecting rod has multiple openings along its length, and the swing shaft and the connecting shaft are rotatably connected to the multiple openings. The connecting rod is located on the side of the swing arm and the crank arm away from the wind vane seat.

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The oscillating blades also include: A swashplate seat is connected between the swashplate body and the driven crank. A limiting groove is formed on the side of the wind vane seat facing the air duct, and the swashplate seat is installed in the limiting groove.

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, A limiting hole is formed within the limiting groove, and the shape of the limiting hole matches the cross-section of the driven crank; and / or A limiting rib is formed in the limiting groove, and the limiting rib cooperates with the bottom support of the swing blade seat.

10. A wall-mounted air conditioner indoor unit, comprising: The housing has an air inlet and an air outlet, and an air duct is provided inside the housing; A heat exchanger is disposed in the air duct and located between the air inlet and the air outlet to exchange heat with the air entering from the air inlet. A fan is installed in the air duct and located below the heat exchanger. Indoor air enters the air duct from the air inlet under the operation of the fan, and after heat exchange by the heat exchanger, it is output from the air outlet. A swing assembly is disposed in the air duct and located below the fan. The heat exchange airflow is output in different directions by the swing of the swing assembly. Its features are, The swing assembly includes: Wind board seat; Multiple blades, the multiple blades being spaced apart on the side of the air deflector facing the air duct; A drive mechanism is provided on the side of the wind vane seat away from the air duct and is spaced apart from the swing blades along the length direction of the wind vane seat. A connecting rod is provided on the side of the wind vane seat away from the air duct, and the lower ends of the plurality of blades pass through the wind vane seat and are connected to the drive mechanism through the connecting rod; The drive mechanism includes: Drive components; An active crank includes an active shaft, a crank arm, and a connecting shaft. The connecting shaft and the active shaft are integrally formed at both ends of the crank arm and are perpendicular to each other. One end of the active shaft is driven and connected to the drive member, and the other end is limited and engaged with the fan seat. The connecting shaft is connected to the connecting rod.

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