Machine head assembly and air outlet equipment

Abstract

The invention relates to the technical field of household appliances, and discloses a machine head assembly and air outlet equipment. The air outlet grid is arranged at one end of the air duct assembly; the main motor and the fan blades are arranged in the air duct assembly; and the flow guide structure is arranged between the fan blades and the air outlet grid, and the flow guide structure is used for guiding the airflow passing through the fan blades to flow in the axial direction of the air duct assembly. The flow guide structure is arranged between the fan blades and the air outlet grid, the flow guide structure can guide airflow passing through the fan blades to flow in the axial direction of the air duct assembly, and therefore when the airflow flows to the air outlet grid, the airflow flows in the axial direction, in the process that the airflow flows through the air outlet grid, energy loss is small, and wind power is almost not lost; therefore, high-air-speed air outlet can be achieved, and the air supply distance is long.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to head unit components and air outlet devices. Background Technology

[0002] In related technologies, fan exhaust grilles typically come in two forms: radially diverging arc-shaped grilles and radially diverging straight grilles. In axial-flow fans, the airflow is pressurized by the rotation of the blades and blown out in a spiral pattern. When the exhaust grille is arc-shaped, its shape is usually reversed compared to the spiral pattern of the blades. This corrects the airflow from the exhaust grille, directing it axially towards the fan head, thus extending the fan's delivery distance. When the exhaust grille is straight, it collides with the spiral airflow from the blades, resulting in airflow loss, reduced airflow velocity, decreased delivery distance, and increased noise. Summary of the Invention

[0003] In view of this, the present invention provides a head assembly and an air outlet device to solve the problems of reduced air velocity, decreased air delivery distance, and high noise when the air outlet grille is a straight grille.

[0004] In a first aspect, the present invention provides a nose assembly, comprising: Air duct components; An air outlet grille is located at one end of the air duct assembly; The main motor and fan blades are located inside the air duct assembly; A flow guiding structure is disposed between the fan blade and the air outlet grille. The flow guiding structure is used to guide the airflow after passing through the fan blade into an axial flow along the air duct assembly.

[0005] Beneficial effects: By setting a guide structure between the fan blades and the air outlet grille, the guide structure can guide the airflow after passing through the fan blades to flow axially along the air duct assembly. Therefore, when the airflow reaches the air outlet grille, it flows axially. During the process of flowing through the air outlet grille, there is little energy loss and almost no loss of wind force, thus achieving high wind speed air outlet and long air delivery distance.

[0006] In one alternative embodiment, the airflow guiding structure includes a plurality of airflow guiding fins distributed circumferentially, wherein the bending direction of the airflow guiding fins is opposite to the rotation direction of the fan blades along the radial direction of the airflow duct assembly.

[0007] In one alternative embodiment, along the flow direction of the airflow, the guide fins include a curved section and a straight section, the straight section extending axially along the air duct assembly.

[0008] In one alternative embodiment, the distance between the fan blade and the guide fin along the axial direction of the air duct assembly is L1, where 5 mm ≤ L1 ≤ 20 mm.

[0009] In one alternative embodiment, the length of the guide fins along the axial direction of the air duct assembly is L2, where L2 ≥ 8 mm.

[0010] In one alternative embodiment, on a projection plane perpendicular to the axial direction of the air duct assembly, the projected area of ​​a single guide fin is S1, the projected area between two adjacent guide fins is S2, C = S2 / S1, and 1.5 ≤ C ≤ 5.

[0011] In one optional embodiment, the air duct assembly includes a motor mounting hub, the main motor is mounted on the motor mounting hub, and the guide fins are mounted on the outer periphery of the motor mounting hub.

[0012] In one alternative embodiment, the air outlet grille includes radially distributed straight grilles or arc-shaped grilles.

[0013] In one optional embodiment, the air duct assembly includes a main air duct, a central air duct, and an annular air duct. The main motor and the air guide structure are disposed within the main air duct. The central air duct and the annular air duct are disposed at one end of the main air duct, and the annular air duct is disposed on the outer periphery of the central air duct. The head assembly further includes: An air guide plate assembly includes multiple air guide plates, the multiple air guide plates having a closed position for closing the central air duct and an open position for opening the central air duct; A drive assembly, connected to multiple air guide plates, is capable of driving the air guide plates to switch between the closed position and the open position. The head assembly has a cold air mode and a warm air mode. In the cold air mode, the drive assembly drives the air guide plates to switch to the open position. In the warm air mode, the drive assembly drives the air guide plates to switch to the closed position. The heating element is located in the annular air duct.

[0014] In one optional embodiment, the air guide plate assembly includes a first mounting bracket, the first mounting bracket including a first central connecting portion and a first annular connecting portion, the air guide plate being rotatably disposed between the first central connecting portion and the first annular connecting portion, the air guide plate including a plate body, when the air guide plate is in the closed position, the plate bodies of each air guide plate are formed on the same plane or annular cone surface or adjacent plate bodies at least partially overlap, so as to block the connection between the main air duct and the central air duct, when the air guide plate is in the open position, an air vent is formed between adjacent plate bodies to allow airflow to pass through so as to connect the main air duct and the central air duct.

[0015] In one optional embodiment, the first central connecting portion and the first annular connecting portion are connected by a plurality of radially arranged first connecting ribs. Along the radial direction of the main air duct, the first connecting ribs gradually tilt away from the main air duct. The air guide plate is disposed on the first mounting bracket. When the air guide plate is switched to the closed position, along the radial direction of the main air duct, the air guide plate gradually tilts away from the main air duct.

[0016] In one optional embodiment, the first central connecting portion and / or the first annular connecting portion are provided with a plurality of first slots along the circumferential direction, and the air guide plate includes a rotating shaft located at at least one end of the plate body, the rotating shaft being disposed in the first slot.

[0017] In one optional embodiment, the air guide plate further includes a rocker arm, and the driving assembly includes a rotating component. The rotating component is provided with a plurality of actuating slots spaced apart along the circumference, and the rocker arm is disposed in the actuating slots. When the rotating component rotates, it drives the rocker arm to move, thereby driving the air guide plate to rotate.

[0018] In one alternative embodiment, the rotating member has an engaging portion, and the drive assembly further includes: A drive motor is fixed relative to the first central connection part or the air duct assembly; The drive gear is connected to the output shaft of the drive motor and meshes with the meshing part.

[0019] In one optional embodiment, the air guide plate assembly further includes a drive motor bracket, the drive motor bracket being fixedly connected to the first central connecting portion, the drive motor being fixed to the drive motor bracket, and the rotating component being rotatably engaged with the drive motor bracket.

[0020] In one optional embodiment, the drive motor bracket is provided with a mounting shaft, the rotating component is provided with a mounting through hole, the mounting shaft passes through the mounting through hole, and the mounting shaft is fixedly connected to the first central connecting part.

[0021] In one optional embodiment, the rotating component and the drive motor bracket are engaged by a limiting structure, which is used to limit the rotation angle of the rotating component.

[0022] In one optional embodiment, the rotating component is positioned between the drive motor bracket and the first central connection portion, the first central connection portion being provided with a first limiting portion, the first limiting portion restricting the rotating component from moving axially.

[0023] In one alternative embodiment, the first central connecting portion is provided with a second limiting portion, which restricts the drive gear from moving axially.

[0024] In one optional embodiment, the head assembly further includes a housing, in which the main air duct, the air guide plate assembly, the drive assembly, and the heating assembly are all disposed, and the first mounting bracket is connected to the housing.

[0025] In one optional embodiment, the air duct assembly includes an air duct structure, the air duct structure including a first annular wall panel, a first connecting wall panel and a second annular wall panel, the inner side of the first annular wall panel forms the main air duct, one end of the first connecting wall panel is connected to the outer wall of the first annular wall panel, the gap between the second annular wall panel and the first annular connecting portion forms the annular air duct, and the inner side of the first annular connecting portion forms the central air duct. Alternatively, the central air duct and the annular air duct are formed within the outer casing; Alternatively, the first mounting bracket may further include an annular connector surrounding the outside of the first annular connecting portion, the gap between the annular connector and the first annular connecting portion forming the annular air duct, and the inner side of the first annular connecting portion forming the central air duct.

[0026] In one optional embodiment, the outer shell includes a cylindrical shell, a second central connecting portion, and a second annular connecting portion, wherein the second annular connecting portion is correspondingly connected to the first annular connecting portion.

[0027] In one alternative embodiment, the air guide plate assembly further includes a drive motor bracket, and the drive assembly includes a drive motor disposed between the drive motor bracket and the second central connection portion.

[0028] In one optional embodiment, the first annular connecting portion is provided with a plurality of first slots along the circumference, and the second annular connecting portion is provided with a plurality of second slots along the circumference. The second slots are arranged opposite to and correspond one-to-one with the first slots. The air guide plate is provided with a rotating shaft at one end near the first annular connecting portion, and the rotating shaft is limited between the first slots and the second slots.

[0029] In one optional embodiment, the air outlet grille includes an annular grille disposed opposite to the annular air duct and a first grille disposed opposite to the central air duct; The head assembly further includes a second grille, which is located at one end of the main air duct away from the central air duct, or the second grille is located at one end of the outer casing away from the central air duct.

[0030] Secondly, the present invention also provides an air outlet device, comprising: The aforementioned head assembly.

[0031] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of a head assembly according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of a head assembly according to an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a cross-sectional view of a head assembly according to an embodiment of the present invention, with the airflow direction marked. Figure 6 A schematic diagram showing a duct structure with guide fins inside; Figure 7 This is a schematic diagram of the fan blades; Figure 8 A cross-sectional view of the air duct structure with guide fins inside; Figure 9 The projection view of the air duct structure with guide fins on a projection plane perpendicular to the axis of the air duct structure. Figure 10 This is a schematic diagram showing the first grille separating from the outer shell; Figure 11 This is a schematic diagram when the first grille is a straight grille; Figure 12 This is a schematic diagram of the outer casing; Figure 13 This is a schematic diagram of the air guide plate; Figure 14 This is a schematic diagram of a rotating component; Figure 15 This is a schematic diagram of a first mounting bracket in one embodiment; Figure 16 This is a schematic diagram of a first mounting bracket in an alternative embodiment.

[0034] Explanation of reference numerals in the attached figures: 1. Air duct structure; 101. Main air duct; 102. First annular wall panel; 103. First connecting wall panel; 104. Second annular wall panel; 105. Motor mounting hub; 2. Central air duct; 3. Annular air duct; 4. Air guide plate; 401. Plate body; 402. Rotating shaft; 403. Rocker arm; 5. Fan blade; 6. Main motor; 7. First mounting bracket; 701. First central connecting part; 702. First annular connecting part; 7021. Annular rib; 7022. Annular plate; 703. First slot; 704. First connecting rib; 705. Screw through hole; 706. First limiting part; 707. Second limiting part; 708. Annular connector; 709. Second engaging part; 710 8. First screw hole; 9. Rotating component; 10. Actuating groove; 11. Engaging part; 12. Limiting groove; 13. Mounting through hole; 14. Annular stepped surface; 15. Drive motor; 16. Drive gear; 17. Drive motor bracket; 18. Mounting shaft; 19. Housing; 10. Second annular connecting part; 11. Second slot; 12. Cylindrical housing; 13. Second central connecting part; 14. Second connecting rib; 15. First screw post; 16. Air outlet grille; 17. First grille; 18. Annular grille; 19. Second grille; 10. Heating element; 10. Guide fins; 11. Bending section; 12. Straight section. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] The following is combined with Figures 1 to 16 The following describes embodiments of the present invention.

[0040] According to an embodiment of the present invention, in one aspect, a head assembly is provided, including: an air duct assembly, an air outlet grille 13, a main motor 6, a fan blade 5, and a flow guide structure.

[0041] The air outlet grille 13 is located at one end of the air duct assembly; the main motor 6 and the fan blade 5 are located inside the air duct assembly; the flow guiding structure is located between the fan blade 5 and the air outlet grille 13, and the flow guiding structure is used to guide the airflow after passing through the fan blade 5 into an axial flow along the air duct assembly.

[0042] In this embodiment, by setting a flow guide structure between the fan blade 5 and the air outlet grille 13, the flow guide structure can guide the airflow after passing through the fan blade 5 into an axial flow along the air duct assembly. Therefore, when the airflow flows to the air outlet grille 13, it flows axially. During the process of flowing through the air outlet grille 13, there is little energy loss and almost no wind force loss, thus achieving high wind speed air outlet and long air delivery distance.

[0043] In one embodiment, such as Figure 6 and Figure 9 The airflow guiding structure includes multiple airflow guiding fins 16 distributed circumferentially. Along the radial direction of the air duct assembly, the bending direction of the airflow guiding fins 16 is opposite to the rotation direction of the fan blades 5.

[0044] In this embodiment, when the fan blade 5 rotates, it drives the airflow to be blown out in a spiral shape. By making the bending direction of the guide fin 16 opposite to the rotation direction of the fan blade 5, the airflow after passing through the fan blade 5 can pass through the guide structure, thereby changing the flow direction of the airflow.

[0045] Specifically in one embodiment, such as Figure 7 The middle arrow indicates the direction; the rotation direction of blade 5 is clockwise. Figure 6 The middle arrow indicates the direction, and along the radial direction of the air duct assembly, the guide fins 16 are bent counterclockwise.

[0046] In one embodiment, along the flow direction of the airflow, the guide fin 16 includes a curved section 1601 and a straight section 1602, the straight section 1602 extending axially along the air duct assembly.

[0047] In this embodiment, the guide fin 16 includes a curved section 1601 and a straight section 1602. The straight section 1602 extends along the axial direction of the air duct assembly. The curved section 1601 can gradually guide the airflow. When the airflow reaches the straight section 1602, it flows along the straight section 1602, so that the airflow flows along the axial direction of the air duct assembly after passing through the guide fin 16.

[0048] In one specific embodiment, the curve curvature of the curved segment 1601 is designed to gradually change.

[0049] In one embodiment, such as Figure 3 As shown, along the axial direction of the air duct assembly, the distance between the fan blade 5 and the guide fin 16 is L1, where 5 mm ≤ L1 ≤ 20 mm.

[0050] In this embodiment, the distance between the fan blade 5 and the guide fin 16 is between 5 mm and 20 mm, which ensures that the guide fin 16 is in the optimal airflow entry position, thereby ensuring that the airflow can pass through the guide fin 16.

[0051] In one embodiment, the length of the guide fin 16 along the axial direction of the air duct assembly is L2, where L2 ≥ 8 mm.

[0052] In this embodiment, the length of the guide fin 16 along the axial direction of the air duct assembly is more than 8 mm, which can ensure sufficient guide stroke, thereby ensuring that the airflow is straightened.

[0053] In one embodiment, on a projection plane perpendicular to the axis of the air duct assembly, the projected area of ​​a single guide fin 16 is S1, the projected area between two adjacent guide fins 16 is S2, C = S2 / S1, and 1.5 ≤ C ≤ 5.

[0054] In this embodiment, if the number of guide fins 16 is too large, the obstruction area will be larger, the air outlet area will be smaller, and the overall air volume will be smaller. If the number of guide fins 16 is too small and too sparse, it will not be able to smoothly guide and straighten the airflow, but will instead become a structure that obstructs the airflow. Therefore, the number of guide fins 16 is set to satisfy the following: on the projection plane perpendicular to the axis of the air duct assembly, the projection area of ​​a single guide fin 16 is S1, the projection area between two adjacent guide fins 16 is S2, C = S2 / S1, 1.5≤C≤5, so that the obstruction to the airflow is small while ensuring that the airflow is straightened.

[0055] In one embodiment, the air duct assembly includes a motor mounting hub 105, a main motor 6 is mounted on the motor mounting hub 105, and guide fins 16 are mounted on the outer periphery of the motor mounting hub 105.

[0056] In this embodiment, the main motor 6 is mounted on the motor mounting hub 105, and the guide fins 16 are mounted on the outer periphery of the motor mounting hub 105. This facilitates the installation of the guide fins 16 and allows the guide fins 16 to be closer to the fan blades 5.

[0057] In one embodiment, the air outlet grille 13 includes linear grilles or arc-shaped grilles distributed radially.

[0058] In this embodiment, the airflow guiding structure can guide the airflow after passing through the fan blade 5 into an axial flow along the air duct assembly. Therefore, when the airflow reaches the air outlet grille 13, it flows axially. During the process of flowing through the straight grille or the arc grille, there is little energy loss and almost no loss of wind power, thus achieving high wind speed air outlet and long air delivery distance.

[0059] In one embodiment, the air duct assembly includes a main air duct 101, a central air duct 2, and an annular air duct 3. The main motor 6 and the air guide structure are disposed within the main air duct 101. The central air duct 2 and the annular air duct 3 are disposed at one end of the main air duct 101, and the annular air duct 3 is disposed on the outer periphery of the central air duct 2. The head assembly also includes an air guide plate assembly, a drive assembly, and a heating assembly 15. The air guide plate assembly includes multiple air guide plates 4, which have a closed position for closing the central air duct 2 and an open position for opening the central air duct 2. The drive assembly is connected to the multiple air guide plates 4 and can drive the air guide plates 4 to switch between the closed and open positions. The head assembly has a cold air mode and a warm air mode. In the cold air mode, the drive assembly drives the air guide plates 4 to switch to the open position. In the warm air mode, the drive assembly drives the air guide plates 4 to switch to the closed position. The heating assembly 15 is disposed in the annular air duct 3.

[0060] In this embodiment, when cool air is needed, the heating element 15 is not working, and the driving component controls the air guide plate 4 to switch to the open position. After the airflow enters the main air duct 101, as... Figure 5 The solid and dashed lines with arrows indicate the directions from the main air duct 101 to the central air duct 2 and the annular air duct 3, respectively. The airflow exiting through the central air duct 2 and the annular air duct 3 ensures sufficiently strong and large-volume cooling. When hot air is needed, the heating element 15 operates, and the drive element controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 101, it... Figure 5The dotted line with arrows indicates the direction from the main air duct 101 to the annular air duct 3. After being heated by the heating element 15, the air is blown out, avoiding losses during hot air delivery and reducing heat loss during heating. Furthermore, the heating element 15 is located in the annular air duct 3, and the airflow concentration effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element 15, achieving optimal heating effect. In addition, by setting a guide structure, when blowing cold air, the guide structure can guide the airflow after passing through the fan blades 5 to flow along the axial direction of the air duct assembly. When the airflow passes through the central air duct 2, the air guide plate 4 can also guide the airflow. Therefore, when the airflow reaches the air outlet grille 13, it flows axially. During the process of flowing through the air outlet grille 13, energy loss is small and wind force is almost not lost, thus achieving high wind speed and long air delivery distance.

[0061] It should be noted that "multiple" means at least two, and "multiple air guides 4" specifically refers to at least two air guides 4.

[0062] In one embodiment, the air guide plate assembly includes a first mounting bracket 7, which includes a first central connecting portion 701 and a first annular connecting portion 702. The air guide plate 4 is rotatably disposed between the first central connecting portion 701 and the first annular connecting portion 702. The air guide plate 4 includes a plate body 401. When the air guide plate 4 is in the closed position, the plate bodies 401 of each air guide plate 4 are formed on the same plane or annular cone surface or adjacent plate bodies 401 at least partially overlap to block the communication between the main air duct 101 and the central air duct 2. When the air guide plate 4 is in the open position, an air vent is formed between adjacent plate bodies 401 to allow airflow to pass through so that the main air duct 101 and the central air duct 2 can communicate.

[0063] In this embodiment, when the air guide plate 4 is in the closed position, the plate bodies 401 of each air guide plate 4 are formed on the same plane or an annular cone surface, or adjacent plate bodies 401 at least partially overlap, which can block the airflow from passing through the central air duct 2. When the air guide plate 4 is in the open position, an air-blocking opening is formed between adjacent plate bodies 401 to allow the airflow to pass through the first mounting bracket 7. By setting the first mounting bracket 7, the air guide plate assembly can be pre-assembled, which facilitates the assembly of the entire head assembly.

[0064] In this embodiment, the plate 401 is a flat plate. When the plate 401 is a curved plate, the air guide plate 4 is in the open position, and the air passage between two adjacent plates 401 can allow airflow to pass through.

[0065] In one embodiment, the first central connecting part 701 and the first annular connecting part 702 are connected by a plurality of radially arranged first connecting ribs 704. Along the radial direction of the main air duct 101, the first connecting ribs 704 gradually tilt away from the main air duct 101. The air guide plate 4 is disposed on the first mounting bracket 7. When the air guide plate 4 is switched to the closed position, along the radial direction of the main air duct 101, the air guide plate 4 gradually tilts away from the main air duct 101.

[0066] In this embodiment, when the air guide plate 4 is switched to the closed position, along the radial direction of the main air duct 101, the air guide plate 4 gradually tilts away from the main air duct 101. The tilted air guide plate 4 makes it easier for the airflow flowing out of the main air duct 101 to flow into the annular air duct 3, reducing airflow resistance and avoiding airflow dead zones.

[0067] Specifically, the head assembly also includes a housing 12. The air guide plate assembly is positioned between the first mounting bracket 7 and the housing 12, along the radial direction of the main air duct 101. The first connecting rib 704 gradually tilts away from the main air duct 101, and the first central connecting part 701 is closer to the main air duct 101, so that a larger space is formed between the first mounting bracket 7 and the housing 12 to accommodate the air guide plate assembly, avoiding the unsightly appearance caused by the housing 12 protruding outward.

[0068] In a preferred embodiment, when the air guide plate 4 is in the open position, the plate body 401 is parallel to the axis of the main air duct 101.

[0069] In an alternative embodiment, the air guide plate 4 can be unfolded and retracted like a folding fan, closing the central air duct 2 when unfolded and opening the central air duct 2 when retracted.

[0070] In one specific embodiment, the plate body 401 of the air guide plate 4 is fan-shaped, and multiple air guide plates 4 are evenly arranged circumferentially. When multiple air guide plates 4 are simultaneously in the closed position, the multiple air guide plates 4 are in a plane or annular cone, or the plate bodies 401 of adjacent air guide plates 4 at least partially overlap.

[0071] In one embodiment, the first central connecting portion 701 and / or the first annular connecting portion 702 are provided with a plurality of first slots 703 in the circumferential direction, and the air guide plate 4 includes a rotating shaft 402 located at at least one end of the plate body 401, the rotating shaft 402 being disposed in the first slots 703.

[0072] In this embodiment, the air guide plate 4 includes a rotating shaft 402 located at at least one end of the plate body 401. The rotating shaft 402 is disposed in the first slot 703, which facilitates the positioning and installation of the air guide plate 4, improves assembly efficiency, and also allows the air guide plate 4 to switch between the open and closed positions under the limitation of the first slot 703.

[0073] In a preferred embodiment, both the first central connecting portion 701 and the first annular connecting portion 702 are provided with a plurality of first slots 703 along the circumferential direction. The first slots 703 provided in the first central connecting portion 701 and the first slots 703 provided in the first annular connecting portion 702 correspond one-to-one. The air guide plate 4 includes a rotating shaft 402 located at both ends of the plate body 401, and the rotating shafts 402 at both ends are disposed in the corresponding first slots 703.

[0074] In one embodiment, the air guide plate 4 further includes a rocker arm 403, and the driving component includes a rotating member 8. The rotating member 8 is provided with a plurality of actuating grooves 801 spaced apart along the circumference. The rocker arm 403 is disposed in the actuating grooves 801. When the rotating member 8 rotates, it drives the rocker arm 403 to move, thereby driving the air guide plate 4 to rotate.

[0075] In this embodiment, the rocker arm 403 is located in the actuation groove 801, and the rotating shafts 402 at both ends of the plate 401 are located in the first slots 703, allowing for quick assembly of the air guide plate 4. When the rotating component 8 rotates, it drives the rocker arm 403 to move, thereby driving the air guide plate 4 to rotate. Therefore, the rotation of one rotating component 8 can simultaneously drive multiple air guide plates 4 to rotate together, resulting in a simpler structure and lower cost.

[0076] Specifically, the joystick 403 and the plate 401 are not coplanar.

[0077] Specifically, the rocker arm 403 is connected to one of the rotating shafts 402. Preferably, the rocker arm 403 is connected to the rotating shaft 402 near the rotating member 8.

[0078] In one embodiment, the rotating member 8 has a meshing portion 802, and the driving assembly further includes: a driving motor 9, which is fixed relative to the first central connection portion 701 or the air duct assembly; and a drive gear 10, which is connected to the output shaft of the driving motor 9 and meshes with the meshing portion 802.

[0079] In this embodiment, when the drive motor 9 is working, it drives the drive gear 10 to rotate. The drive gear 10 meshes with the meshing part 802 of the rotating part 8, thereby driving the rotating part 8 to rotate, which in turn drives the rocker arm 403 to rotate to a certain extent, thereby simultaneously driving each air guide plate 4 to flip. The drive assembly has a simple structure and reliable transmission.

[0080] In one specific embodiment, the meshing part 802 has internal meshing teeth, the driving gear 10 has external meshing teeth, and the driving gear 10 is located inside the driven gear, thereby making the structure of the drive assembly more compact.

[0081] In an alternative embodiment, the drive motor 9 and the drive gear 10 may be omitted, and the rotating component 8 may be driven to rotate by manual direct or indirect drive, thereby driving the air guide plate 4 to rotate.

[0082] In one embodiment, the air guide plate assembly further includes a drive motor bracket 11, which is fixedly connected to the first central connection portion 701. The drive motor 9 is fixed to the drive motor bracket 11, and the rotating component 8 is rotatably engaged with the drive motor bracket 11.

[0083] In this embodiment, by providing a drive motor bracket 11, the installation of the drive motor 9 is facilitated. In addition, the rotating part 8 is rotatably engaged with the drive motor bracket 11, and the drive motor bracket 11 can limit the rotation of the rotating part 8 and ensure that the rotating part 8 can rotate smoothly.

[0084] In one specific embodiment, the drive motor bracket 11 is connected to the first central connection portion 701 by screws and / or snap fasteners.

[0085] In one embodiment, such as Figure 4 As shown, the drive motor bracket 11 is provided with a mounting shaft 1101, and the rotating part 8 is provided with a mounting through hole 804. After the mounting shaft 1101 passes through the mounting through hole 804, the mounting shaft 1101 is fixedly connected to the first central connecting part 701.

[0086] In this embodiment, after the mounting shaft 1101 passes through the mounting through hole 804, the mounting shaft 1101 is fixedly connected to the first central connecting part 701, which can connect the drive motor bracket 11, the rotating part 8 and the first mounting bracket 7 into a whole, thereby improving assembly stability and assembly efficiency.

[0087] In one specific embodiment, the first central connecting part 701 is provided with a screw through hole 705, and the mounting shaft 1101 is provided with a threaded hole. The screw passes through the screw through hole 705 and is tightened in the threaded hole.

[0088] In one embodiment, the rotating component 8 and the drive motor bracket 11 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating component 8.

[0089] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating component 8, it can be ensured that the air guide plate 4 can only switch between the open position and the closed position.

[0090] In one embodiment, the limiting structure includes a limiting groove 803 and a limiting rib. The limiting groove 803 is provided in one of the rotating member 8 and the drive motor bracket 11, and the limiting rib is provided in the other of the rotating member 8 and the drive motor bracket 11. The limiting rib is adapted to move along the limiting groove 803.

[0091] In this embodiment, the limiting rib and the limiting groove 803 cooperate to limit the rotation angle of the rotating part 8, which can ensure that the air guide plate 4 can only switch between the open position and the closed position.

[0092] In one specific embodiment, when the limiting rib is located at one end of the limiting groove 803, the plate 401 is parallel to the axis of the main air duct 101, and when the limiting rib is located at the other end of the limiting groove 803, the air guide plate 4 is in the closed position.

[0093] In one specific embodiment, the limiting rib is provided on the drive motor bracket 11, and the limiting groove 803 is provided on the rotating member 8.

[0094] In one embodiment not shown in the figure, the limiting rib can be provided on the rotating member 8, and the limiting groove 803 can be provided on the drive motor bracket 11.

[0095] Specifically, such as Figure 14 As shown, the limiting groove 803 is an arc-shaped groove.

[0096] In one embodiment, the rotating member 8 is located between the drive motor bracket 11 and the first central connection portion 701. The first central connection portion 701 is provided with a first limiting portion 706, which restricts the rotating member 8 from moving axially.

[0097] In this embodiment, the first limiting part 706 restricts the rotation of the rotating member 8 along the axial direction, which can prevent the rotating member 8 from moving along the axial direction and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 703 on the first mounting bracket 7. This avoids the air guide plate 4 from disengaging from the limiting part of the first mounting bracket 7 and thus not being able to smoothly switch between the open and closed positions.

[0098] In one specific embodiment, the first limiting part 706 is annular, and the rotating member 8 is provided with an annular stepped surface 805, with the first limiting part 706 abutting against the annular stepped surface 805. In another specific embodiment, the first limiting part 706 is annular, and the rotating member 8 is provided with an annular stepped surface 805, with a certain gap between the first limiting part 706 and the annular stepped surface 805, to prevent the rotating member 8 from moving circumferentially and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 703 on the first mounting bracket 7, thereby preventing the air guide plate 4 from disengaging from the limiting position of the first mounting bracket 7 and thus avoiding the inability to smoothly switch between the open and closed positions.

[0099] In one embodiment, the first central connecting portion 701 is provided with a second limiting portion 707, which restricts the drive gear 10 from moving axially.

[0100] In this embodiment, by providing a second limiting part 707, the drive gear 10 can be prevented from moving axially.

[0101] In one embodiment, the head assembly further includes a housing 12, in which the main air duct 101, the air guide plate assembly, the drive assembly and the heating assembly 15 are all disposed, and the first mounting bracket 7 is connected to the housing 12.

[0102] In this embodiment, by setting the outer shell 12, the main air duct 101, the air guide plate assembly, the drive assembly and the heating assembly 15 are all located inside the outer shell 12, making the appearance more aesthetically pleasing. The first mounting bracket 7 is connected to the outer shell 12, which can fix the first mounting bracket 7 inside the outer shell 12. During assembly, the air guide plate assembly is first assembled into a whole, and then the first mounting bracket 7 in the air guide plate assembly is installed into the outer shell 12 to realize the assembly of the air guide plate assembly into the outer shell 12.

[0103] In one embodiment, the air duct assembly includes an air duct structure 1, which includes a first annular wall panel 102, a first connecting wall panel 103, and a second annular wall panel 104. The inner side of the first annular wall panel 102 forms a main air duct 101, one end of the first connecting wall panel 103 is connected to the outer wall of the first annular wall panel 102, and the gap between the second annular wall panel 104 and the first annular connecting portion 702 forms an annular air duct 3. The inner side of the first annular connecting portion 702 forms a central air duct 2. In an alternative embodiment, the central air duct 2 and the annular air duct 3 are formed within the housing 12. In this embodiment, the structure of the first mounting bracket 7 is as follows: Figure 15 As shown. In another alternative embodiment, as Figure 16 As shown, the first mounting bracket 7 also includes an annular connector 708 surrounding the outside of the first annular connecting portion 702. The gap between the annular connector 708 and the first annular connecting portion 702 forms an annular air duct 3, and the inner side of the first annular connecting portion 702 forms a central air duct 2.

[0104] In one specific embodiment, the first annular connecting part 702 includes an annular rib 7021 and an annular plate 7022, the gap between the second annular wall plate 104 and the annular plate 7022 forms an annular air duct 3, and the inner side of the annular plate 7022 forms a central air duct 2.

[0105] In one embodiment, the outer casing 12 includes a cylindrical casing 1202, a second central connecting portion 1203, and a second annular connecting portion 1201, wherein the second annular connecting portion 1201 is correspondingly connected to the first annular connecting portion 702.

[0106] In this embodiment, the second annular connecting part 1201 is connected to the first annular connecting part 702, which can stably connect the first mounting bracket 7 to the outer shell 12.

[0107] In one embodiment, the air guide plate assembly further includes a drive motor bracket 11, and the drive assembly includes a drive motor 9, which is disposed between the drive motor bracket 11 and the second center connection portion 1203.

[0108] In this embodiment, the drive motor 9 is disposed between the drive motor bracket 11 and the second central connection portion 1203, which can ensure effective fixation of the drive motor 9.

[0109] In one embodiment, the first annular connecting portion 702 is provided with a plurality of first slots 703 along the circumferential direction, and the second annular connecting portion 1201 is provided with a plurality of second slots 12011 along the circumferential direction. The second slots 12011 are arranged opposite to and correspond one-to-one with the first slots 703 of the first annular connecting portion 702. The air guide plate 4 is provided with a rotating shaft 402 at one end near the first annular connecting portion 702. The rotating shaft 402 is limited between the first slots 703 and the second slots 12011.

[0110] In this embodiment, by providing a second slot 12011 in the second annular connecting part 1201, when the first annular connecting part 702 is connected to the second annular connecting part 1201, the rotating shaft 402 at one end of the plate 401 is limited between the first slot 703 of the first annular connecting part 702 and the second slot 12011 of the second annular connecting part 1201. This can prevent the air guide plate 4 from falling off the first mounting bracket 7 and can also effectively prevent the rotating shaft 402 of the air guide plate 4 from moving up, down, left, and right significantly when rotating.

[0111] In one embodiment, the air outlet grille 13 includes an annular grille 1302 disposed opposite to the annular air duct 3 and a first grille 1301 disposed opposite to the central air duct 2; the head assembly also includes a second grille 14, which is disposed at the end of the main air duct 101 away from the central air duct 2, or the second grille 14 is disposed at the end of the outer casing 12 away from the central air duct 2.

[0112] In this embodiment, by setting an annular grille 1302, the heating element 15 located within the annular air duct 3 can be shielded, resulting in a more aesthetically pleasing appearance and preventing accidental burns or electric shocks to the user. The first grille 1301 provides some shielding for the central air duct 2 and its internal air guide plate assembly, ensuring safe operation. The second grille 14 further enhances the overall appearance of the unit and ensures safe operation.

[0113] Specifically, the first grille 1301 may include a straight grille or an arc-shaped grille.

[0114] like Figure 12 As shown, the annular grille 1302 has multiple grille holes that allow airflow to pass through.

[0115] In one specific embodiment, the annular grille 1302 is integrally formed with the cylindrical shell 1202 or is separately disposed therefrom, and the second annular connecting part 1201 is disposed on the inner circumferential side of the annular grille 1302.

[0116] In one specific embodiment, the outer casing 12 further includes a second central connecting portion 1203, which is connected to the second annular connecting portion 1201 by a plurality of second connecting ribs 1204.

[0117] Specifically, the end of the second connecting rib 1204 or the second annular connecting part 1201 is provided with a first screw post 1205, and the end of the first connecting rib 704 or the first annular connecting part 702 is provided with a first screw hole 710. The screw passes through the first screw hole 710 and is tightened in the first screw post 1205 to fix the first mounting bracket 7 to the outer shell 12.

[0118] According to an embodiment of the present invention, in another aspect, an air outlet device is also provided, including: the head assembly provided in the above embodiment.

[0119] In one embodiment, the air outlet device is a fan or a heater.

[0120] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A head assembly, characterized in that, include: Air duct components; An air outlet grille (13) is located at one end of the air duct assembly; The main motor (6) and the fan blade (5) are located inside the air duct assembly; A flow guiding structure is provided between the fan blade (5) and the air outlet grille (13). The flow guiding structure is used to guide the airflow after passing through the fan blade (5) to flow along the axial direction of the air duct assembly.

2. The head assembly according to claim 1, characterized in that, The airflow guiding structure includes a plurality of airflow guiding fins (16) distributed circumferentially. Along the radial direction of the airflow duct assembly, the bending direction of the airflow guiding fins (16) is opposite to the rotation direction of the fan blade (5).

3. The head assembly according to claim 2, characterized in that, Along the direction of airflow, the guide fin (16) includes a curved section (1601) and a straight section (1602), the straight section (1602) extending axially along the air duct assembly.

4. The head assembly according to claim 2 or 3, characterized in that, Along the axial direction of the air duct assembly, the distance between the fan blade (5) and the guide fin (16) is L1, 5 mm ≤ L1 ≤ 20 mm.

5. The head assembly according to claim 2 or 3, characterized in that, Along the axial direction of the air duct assembly, the length of the guide fin (16) is L2, where L2 ≥ 8 mm.

6. The head assembly according to claim 2 or 3, characterized in that, On a projection plane perpendicular to the axial direction of the air duct assembly, the projected area of ​​a single guide fin (16) is S1, and the projected area between two adjacent guide fins (16) is S2, C = S2 / S1, 1.5≤C≤5.

7. The head assembly according to claim 2 or 3, characterized in that, The air duct assembly is provided with a motor mounting hub (105), the main motor (6) is mounted on the motor mounting hub (105), and the guide fins (16) are mounted on the outer periphery of the motor mounting hub (105).

8. The head assembly according to any one of claims 1 to 3, characterized in that, The air outlet grille (13) includes straight grilles or arc-shaped grilles that are distributed radially.

9. The head assembly according to any one of claims 1 to 3, characterized in that, The air duct assembly includes a main air duct (101), a central air duct (2), and an annular air duct (3). The main motor (6) and the guide structure are located inside the main air duct (101). The central air duct (2) and the annular air duct (3) are located at one end of the main air duct (101). The annular air duct (3) is located on the outer periphery of the central air duct (2). The head assembly also includes: The air guide plate assembly includes a plurality of air guide plates (4), the plurality of air guide plates (4) having a closed position for closing the central air duct (2) and an open position for opening the central air duct (2); The drive assembly is connected to multiple air guide plates (4) and can drive the air guide plates (4) to switch between the closed position and the open position. The head assembly has a cold air mode and a warm air mode. In the cold air mode, the drive assembly drives the air guide plates (4) to switch to the open position. In the warm air mode, the drive assembly drives the air guide plates (4) to switch to the closed position. The heating element (15) is located in the annular air duct (3).

10. The head assembly according to claim 9, characterized in that, The air guide plate assembly includes a first mounting bracket (7), the first mounting bracket (7) includes a first central connecting part (701) and a first annular connecting part (702), the air guide plate (4) is rotatably disposed between the first central connecting part (701) and the first annular connecting part (702), the air guide plate (4) includes a plate body (401), when the air guide plate (4) is in the closed position, the plate bodies (401) of each air guide plate (4) are formed on the same plane or annular cone surface or adjacent plate bodies (401) overlap at least partially to block the connection between the main air duct (101) and the central air duct (2), when the air guide plate (4) is in the open position, an air vent is formed between adjacent plate bodies (401) to allow airflow to pass through so that the main air duct (101) and the central air duct (2) are connected.

11. The head assembly according to claim 10, characterized in that, The first central connecting part (701) and the first annular connecting part (702) are connected by a plurality of radially arranged first connecting ribs (704). Along the radial direction of the main air duct (101), the first connecting ribs (704) gradually tilt away from the main air duct (101). The air guide plate (4) is set on the first mounting bracket (7). When the air guide plate (4) is switched to the closed position, along the radial direction of the main air duct (101), the air guide plate (4) gradually tilts away from the main air duct (101).

12. The head assembly according to claim 10, characterized in that, The first central connecting part (701) and / or the first annular connecting part (702) are provided with a plurality of first slots (703) in the circumferential direction. The air guide plate (4) includes a rotating shaft (402) located at at least one end of the plate body (401), and the rotating shaft (402) is disposed in the first slot (703).

13. The head assembly according to claim 10, characterized in that, The air guide plate (4) also includes a rocker arm (403), and the driving component includes a rotating component (8). The rotating component (8) is provided with a plurality of actuating grooves (801) spaced apart along the circumference. The rocker arm (403) is located in the actuating grooves (801). When the rotating component (8) rotates, it drives the rocker arm (403) to move, thereby driving the air guide plate (4) to rotate.

14. The head assembly according to claim 13, characterized in that, The rotating member (8) has an engaging portion (802), and the driving assembly further includes: The drive motor (9) is fixed relative to the first central connection part (701) or the air duct assembly; The drive gear (10) is connected to the output shaft of the drive motor (9) and meshes with the meshing part (802).

15. The head assembly according to claim 14, characterized in that, The air guide plate assembly also includes a drive motor bracket (11), which is fixedly connected to the first central connection part (701), the drive motor (9) is fixed to the drive motor bracket (11), and the rotating part (8) is rotatably engaged with the drive motor bracket (11).

16. The head assembly according to claim 15, characterized in that, The drive motor bracket (11) is provided with a mounting shaft (1101), and the rotating part (8) is provided with a mounting through hole (804). After the mounting shaft (1101) passes through the mounting through hole (804), the mounting shaft (1101) is fixedly connected to the first central connecting part (701).

17. The head assembly according to claim 15, characterized in that, The rotating component (8) and the drive motor bracket (11) cooperate through a limiting structure, which is used to limit the rotation angle of the rotating component (8).

18. The head assembly according to claim 15, characterized in that, The rotating component (8) is located between the drive motor bracket (11) and the first central connecting part (701). The first central connecting part (701) is provided with a first limiting part (706), which restricts the rotating component (8) from moving axially.

19. The head assembly according to claim 14, characterized in that, The first central connecting part (701) is provided with a second limiting part (707), which restricts the drive gear (10) from moving axially.

20. The nose assembly according to any one of claims 10 to 19, characterized in that, The head assembly also includes a housing (12), the main air duct (101), the air guide plate assembly, the drive assembly and the heating assembly (15) are all located inside the housing (12), and the first mounting bracket (7) is connected to the housing (12).

21. The head assembly according to claim 20, characterized in that, The air duct assembly includes an air duct structure (1), which includes a first annular wall panel (102), a first connecting wall panel (103), and a second annular wall panel (104). The inner side of the first annular wall panel (102) forms the main air duct (101), one end of the first connecting wall panel (103) is connected to the outer wall of the first annular wall panel (102), the gap between the second annular wall panel (104) and the first annular connecting part (702) forms the annular air duct (3), and the inner side of the first annular connecting part (702) forms the central air duct (2). Alternatively, the central air duct (2) and the annular air duct (3) are formed within the outer shell (12); Alternatively, the first mounting bracket (7) may further include an annular connector (708) surrounding the outside of the first annular connecting portion (702), the gap between the annular connector (708) and the first annular connecting portion (702) forming the annular air duct (3), and the inner side of the first annular connecting portion (702) forming the central air duct (2).

22. The head assembly according to claim 21, characterized in that, The outer shell (12) includes a cylindrical shell (1202), a second central connecting part (1203), and a second annular connecting part (1201), the second annular connecting part (1201) being connected to the first annular connecting part (702).

23. The head assembly according to claim 22, characterized in that, The air guide plate assembly also includes a drive motor bracket (11), and the drive assembly includes a drive motor (9), which is disposed between the drive motor bracket (11) and the second central connection part (1203).

24. The head assembly according to claim 22, characterized in that, The first annular connecting part (702) is provided with a plurality of first slots (703) along the circumferential direction, and the second annular connecting part (1201) is provided with a plurality of second slots (12011) along the circumferential direction. The second slots (12011) are arranged opposite to the first slots (703) and correspond one to one. The air guide plate (4) is provided with a rotating shaft (402) at one end near the first annular connecting part (702). The rotating shaft (402) is limited between the first slots (703) and the second slots (12011).

25. The head assembly according to claim 23, characterized in that, The air outlet grille (13) includes an annular grille (1302) disposed opposite to the annular air duct (3) and a first grille (1301) disposed opposite to the central air duct (2). The head assembly also includes a second grille (14), which is located at one end of the main air duct (101) away from the central air duct (2), or the second grille (14) is located at one end of the outer casing (12) away from the central air duct (2).

26. An air outlet device, characterized in that, include: The nose assembly according to any one of claims 1 to 25.

27. The air outlet device according to claim 26, characterized in that, The air outlet device is a fan or a heater.

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